CN220894792U

CN220894792U - Knob body, knob subassembly and electrical apparatus

Info

Publication number: CN220894792U
Application number: CN202322734381.3U
Authority: CN
Inventors: 葛飞飞; 李建明
Original assignee: Quanzhou Yise Industrial Design Co ltd
Current assignee: Quanzhou Yise Industrial Design Co ltd
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2024-05-03
Anticipated expiration: 2033-10-11

Abstract

The utility model relates to the field of knobs, and provides a knob body, a knob assembly and an electric appliance, wherein the knob body comprises a base, a lifting mechanism, a return mechanism, an electric control unit, a wireless charging receiving coil and a rotor mechanism, the base is used for being detachably matched with an external base body, the lifting mechanism is movably arranged on the base along the rotation axis direction of the rotor mechanism, and the return mechanism acts between the base and the lifting mechanism and is used for forcing the lifting mechanism to be kept at one end far away from the base body in the moving stroke; the rotor mechanism is rotatably arranged on the base or the lifting mechanism; the electric control unit and the wireless charging receiving coil are both fixedly arranged on the lifting mechanism, and the electric control unit is electrically connected with the wireless charging receiving coil. The utility model conditionally sets the key function in a mechanical pressing mode, and is beneficial to reducing wiring and wiring difficulty and reducing sealing and protecting difficulty of circuit components.

Description

Knob body, knob subassembly and electrical apparatus

Technical Field

The utility model relates to the field of knobs, in particular to a knob body, a knob assembly and an electric appliance.

Background

The Chinese patent application with publication number CN109901662A discloses a magnetic knob and a household appliance, wherein the magnetic knob is adsorbed on the household appliance through a magnetic component, and wireless charging of the magnetic knob is realized through coupling of a wireless charging transmitting module and a wireless charging receiving module.

In addition, in order to realize the key function, the magnetic knob adopts a touch screen mode, so that the cost is high, and the use requirement of part of scenes can be met.

Disclosure of utility model

It is therefore an object of the present utility model to provide a knob body that overcomes the above-mentioned drawbacks of the prior art.

The knob body comprises a base, a lifting mechanism, a return mechanism, an electric control unit, a wireless charging receiving coil and a rotor mechanism, wherein the base is used for being detachably matched with an external base body, the lifting mechanism is movably arranged on the base along the rotation axis direction of the rotor mechanism, and the return mechanism acts between the base and the lifting mechanism and is used for forcing the lifting mechanism to be kept at one end of a moving stroke of the lifting mechanism far away from the base body; the rotor mechanism is rotatably arranged on the base or the lifting mechanism; the electric control unit and the wireless charging receiving coil are both fixedly arranged on the lifting mechanism, and the electric control unit is electrically connected with the wireless charging receiving coil.

Therefore, the wireless charging receiving coil is arranged, so that the wireless charging function can be realized through coupling with an external wireless charging transmitting coil; in addition, as the lifting mechanism is arranged on the knob body which can be arranged in a separated mode, the key function is set in a mechanical pressing mode conditionally, so that the user experience is improved, and the diversified use requirements of users are met; in addition, the knob body is fixedly arranged on the lifting mechanism, so that the electric connection between the electric control unit and the wireless charging receiving coil is not needed to be wired between the base and the lifting mechanism, the wiring difficulty is reduced, and the centralized sealing protection of the electric control unit and the wireless charging receiving coil is also facilitated, and the protection difficulty is reduced.

It is a second object of the present utility model to provide a knob assembly that overcomes the above-mentioned drawbacks of the prior art.

The utility model provides a knob assembly, which comprises a base body and a knob body, wherein the base body comprises a wireless charging transmitting coil, the knob body comprises a base, a wireless charging receiving coil, a lifting mechanism, a return mechanism, an electric control unit and a rotor mechanism, the base is detachably matched with the base body, and the wireless charging receiving coil is used for being coupled with the wireless charging transmitting coil; the lifting mechanism is movably arranged on the base along the rotation axis direction of the rotor mechanism, and the return mechanism acts between the base and the lifting mechanism and is used for forcing the lifting mechanism to be kept at one end of the moving stroke of the lifting mechanism, which is far away from the base body; the rotor mechanism is rotatably arranged on the base or the lifting mechanism; the electric control unit and the wireless charging receiving coil are both fixedly arranged on the lifting mechanism, and the electric control unit is electrically connected with the wireless charging receiving coil.

Therefore, the wireless charging function can be realized due to the combination of the wireless charging transmitting coil and the wireless charging receiving coil; in addition, as the lifting mechanism is arranged on the knob body which can be arranged in a separated mode, the key function is set in a mechanical pressing mode conditionally, so that the user experience is improved, and the diversified use requirements of users are met; in addition, the knob body is fixedly arranged on the lifting mechanism, so that the electric connection between the electric control unit and the wireless charging receiving coil is not needed to be wired between the base and the lifting mechanism, the wiring difficulty is reduced, and the centralized sealing protection of the electric control unit and the wireless charging receiving coil is also facilitated, and the protection difficulty is reduced.

The base is detachably matched with the base in a positioning mode under the action of magnetic attraction of the first positioning magnetic attraction piece and the second positioning magnetic attraction piece.

The base is annular, the second positioning magnetic attraction piece is arranged along the annular direction of the base, the first positioning magnetic attraction piece and the second positioning magnetic attraction piece are opposite to each other along the direction of the rotation axis, and the wireless charging transmitting coil and the wireless charging receiving coil are coupled to the radial inner space of the combination of the base, the first positioning magnetic attraction piece and the second positioning magnetic attraction piece; or the lifting mechanism is provided with a matching groove cavity at one end facing the base body, one end of the base is detachably matched with the base body in a positioning way under the action of the magnetic attraction force of the first positioning magnetic attraction piece and the second positioning magnetic attraction piece, the other end of the base extends into the matching groove cavity and is movably matched with the lifting mechanism along the direction of the rotation axis, and the wireless charging receiving coil is arranged around the base.

Therefore, the coupling charging of the wireless charging transmitting coil and the wireless charging receiving coil is not easy to be blocked by the base, and the wireless charging efficiency is improved.

In another preferred scheme, the knob body is provided with a sealing cavity in the lifting mechanism, and the electric control unit and the wireless charging receiving coil are both positioned in the sealing cavity.

From the above, the arrangement of the sealing cavity is further beneficial to reducing the centralized sealing protection difficulty of the electric control unit and the wireless charging receiving coil, and is beneficial to improving the protection effect.

The further scheme is that the lifting mechanism is fixedly provided with a battery, the battery is electrically connected with the wireless charging receiving coil, the battery is used for supplying power to the electric control unit, and the battery is located in the sealing cavity.

The further scheme is that the lifting mechanism is fixedly provided with a display module, the display module is located at one end, far away from the base body, of the lifting mechanism along the direction of the rotation axis, and the display module is electrically connected with the electric control unit.

In a further scheme, the sealing cavity is surrounded by the display module and the lifting mechanism.

The base member includes the panel, and the knob body detachably location is cooperated on the lateral wall of panel, and wireless charging transmitting coil sets firmly in the inboard of panel.

In a further preferred scheme, the rotor mechanism is fixedly provided with a magnetic body, or the rotor mechanism is in transmission connection with the magnetic body; the electric control unit comprises a magnetic sensor fixedly arranged on the lifting mechanism, and the magnetic sensor detects the rotation angle position of the rotor mechanism through sensing a magnetic body.

The further scheme is that the rotor mechanism is fixedly provided with a gear ring, the lifting mechanism or the base is rotatably provided with a gear, the gear is meshed with the gear ring for transmission, and the magnetic body is fixedly arranged on the gear.

The magnetic body comprises a first magnet and a second magnet which are fixedly arranged on the rotor mechanism, the first magnet and the second magnet are both arranged deviating from the rotation axis of the rotor mechanism, and a magnetic field between the first magnet and the second magnet passes through the magnetic sensor; or the magnetic body comprises a multipolar magnetic ring fixedly arranged on the rotor mechanism, the central line of the multipolar magnetic ring coincides with the rotation axis of the rotor mechanism, and the magnetic sensor deviates from the rotation axis of the rotor mechanism and is adjacent to the multipolar magnetic ring.

In another preferred scheme, the electric control unit comprises a pressing detection device fixedly arranged on the lifting mechanism; the pressing detection device comprises a key abutting on the base, or the pressing detection device comprises a magnetic induction device for inducing magnetic field change.

The utility model further provides an electric appliance.

The electric appliance provided by the utility model comprises the knob assembly of any one of the above, the base body forms a part of the body of the electric appliance, and the body is in wireless communication connection with the knob body.

Drawings

FIG. 1 is a perspective view of an embodiment of a knob assembly of the present utility model.

FIG. 2 is a perspective cross-sectional view of an embodiment of a knob assembly according to the present utility model.

FIG. 3 is a cross-sectional exploded view of a portion of the structure of an embodiment of the knob body of the present utility model.

Fig. 4 is a perspective cross-sectional view of an embodiment of the knob body of the present utility model.

Detailed Description

Fig. 1 to 4 of the present embodiment use a unified space rectangular coordinate system (right-hand system) to represent the relative orientation relationship between the features.

Referring to fig. 1 to 4, the knob assembly of the present embodiment includes a base body and a knob body of the present embodiment, the base body includes a panel 1, an identification magnet 2, a first positioning magnet 3 and a wireless charging transmitting coil 4, a normal line of a main surface of the panel 1 is along a Z-axis direction, the identification magnet 2, the first positioning magnet 3 and the wireless charging transmitting coil 4 are all fixed on a Z-axis negative side of the panel 1 (an inner side of the panel 1), the wireless charging transmitting coil 4 is in a circular ring shape, the identification magnet 2 is located in a cavity of a radial inner side of the wireless charging transmitting coil 4, the first positioning magnet 3 includes six magnets distributed around an outer periphery of the wireless charging transmitting coil 4, specifically, the identification magnet 2, the first positioning magnet 3 and the wireless charging transmitting coil 4 are all fixed on the Z-axis negative side of the panel 1 through a positioning housing 17, and a relative positional relationship among the identification magnet 2, the first positioning magnet 3 and the wireless charging transmitting coil 4 is defined by the positioning housing 17.

The knob body of this embodiment includes base 5, second location magnetism is inhaled piece 6, elevating system 7, wireless receiving coil 8 that charges, battery 9, automatically controlled unit 10, rotor mechanism 11, magnetic part 12, bearing 13, display module 14 and reset button 15 (the example of return mechanism), second location magnetism is inhaled piece 6 and is set firmly in base 5, the knob body is through the magnetism suction effect detachable location cooperation of first location magnetism on piece 3 and the second location magnetism on base 5 on the positive lateral wall of Z axle of panel 1 (the lateral wall of panel 1), the knob body is the cooperation position when being located the positive lateral wall face of Z axle of panel 1, the cooperation position is just right with corresponding first location magnetism piece 3, wireless charging transmitting coil 4 and identification magnet 2 along the Z axle direction.

The rotor mechanism 11 surrounds the periphery of the lifting mechanism 7, and is rotatably connected with the lifting mechanism 7 through a bearing 13, the rotation axis direction of the rotor mechanism 11 is the Z axis direction, the combination of the lifting mechanism 7 and the rotor mechanism 11 is positioned on the positive Z axis side of the base 5, the base 5 is of a ring-shaped structure with a central line along the Z axis direction, the negative Z axis end of the lifting mechanism 7 extends into a cavity on the radial inner side of the base 5, and is movably matched and connected with the base 5 along the Z axis direction.

The reset button 15 is pressed between the base 5 and the lifting mechanism 7, the reset button 15 forces the lifting mechanism 7 to be kept at the positive Z-axis end of the moving stroke, when the lifting mechanism 7 is pressed, the pressing force overcomes the reset force of the reset button 15 to force the lifting mechanism 7 to move negatively Z-axis, and after the pressing force is removed, the reset button 15 forces the lifting mechanism 7 to return to the positive Z-axis end of the moving stroke.

The wireless receiving coil 8 that charges, battery 9 and automatically controlled unit 10 all set firmly in elevating system 7, automatically controlled unit 10 includes main control board 101, magnetic induction device 102 and magnetic sensor 104 are connected with main control board 101 electricity respectively and are fixed a position respectively on elevating system 7, magnetic induction device 102 and wireless receiving coil 8 that charges all are arranged in the radial inboard cavity of base 5, wireless receiving coil 8 that charges is the ring discoid, magnetic induction device 102 is arranged in the radial inboard cavity of wireless receiving coil 8 that charges, second location magnetism is inhaled piece 6 and is six magnets along the circumferential distribution of base 5, when base 5 location cooperation is in panel 1, six magnets of first location magnetism is inhaled piece 3 inhale six magnets of second location magnetism and is inhaled piece 6 one-to-one, wireless transmitting coil 4 and wireless receiving coil 8 that charges couple in base 5, first location magnetism inhale piece 3 and the radial inboard space of second location magnetism is inhaled piece 6.

Specifically, the lifting mechanism 7 includes a first housing 71, a second housing 72 and a third housing 73 which are sequentially and fixedly connected along the positive direction of the Z axis, the display module 14 is fixedly connected to the positive direction end of the Z axis of the third housing 73, the first housing 71, the second housing 72, the third housing 73 and the display module 14 enclose a sealed cavity 16, the wireless charging receiving coil 8, the battery 9 and the electronic control unit 10 are electrically connected and are all located in the sealed cavity 16; specifically, the first housing 71 and the second housing 72 and the third housing 73 are respectively connected in a sealing manner through sealing rings, and the third housing 73 and the display module 14 are connected in a sealing manner through sealing glue. The scheme that the wireless charging receiving coil 8, the battery 9 and the electric control unit 10 (collectively called circuit components) are fixedly arranged on the lifting mechanism 7 is favorable for realizing centralized sealing protection of the circuit components, cables among the circuit components do not need to be routed between the lifting mechanism 7 and the base 5, the sealing protection difficulty of the embodiment on the circuit components is favorable for being reduced, and particularly, the circuit components of the knob body are arranged in the sealing cavity 16, so that the sealing protection of the circuit components is further favorable for being realized conveniently.

The base 5 is provided with a first cylindrical shell 51 and a circular ring-shaped bearing frame 52 which are integrally formed, the central line of the first cylindrical shell 51 coincides with the rotation axis of the rotor mechanism 11, the circular ring-shaped bearing frame 52 is connected to the radial inner side of the Z-axis negative end of the first cylindrical shell 51, six first mounting holes 53 which are distributed along the circumferential direction are formed in the Z-axis negative side wall of the circular ring-shaped bearing frame 52, the magnets of the first positioning magnetic attraction pieces 3 are embedded in the first mounting holes 53 in a one-to-one correspondence manner so as to realize the fixed connection between the first positioning magnetic attraction pieces 3 and the base 5, three second mounting holes 54 which are distributed along the circumferential direction are formed in the Z-axis positive side wall of the circular ring-shaped bearing frame 52, and reset buttons 15 are respectively fixed in the second mounting holes 54.

The first housing 71 has a circular bottom plate 711, a first side plate 712, an annular step plate 713 and a second side plate 714 connected in this order, the normal line of the main surface of the circular bottom plate 711 and the normal line of the main surface of the annular step plate 713 are superposed with the rotation axis of the rotor mechanism 11, the first side plate 712 and the second side plate 714 are cylindrical plates whose center lines are along the Z-axis direction, the Z-axis negative end of the first side plate 712 is connected to the outer edge (radially outer end) of the circular bottom plate 711, the Z-axis positive end of the first side plate 712 is connected to the inner edge (radially inner end) of the annular step plate 713, the outer edge (radially outer end) of the annular step plate 713 is connected to the Z-axis negative end of the second side plate 714, the annular step plate 713 is supported on the Z-axis positive side of the circular bottom plate 52, the reset button 15 is pressed between the Z-axis negative side wall surface of the annular step plate 713 and the Z-axis positive side wall surface of the circular bottom plate 52, the first side plate 712 and the circular bottom plate 711 extend into the radially inner cavity of the circular bottom plate 52, the device 102 and the wireless charging receiving coil 8 are both fixedly arranged on the inner side wall surface of the circular bottom plate 711, and the wireless charging coil 8 is positioned on the positive side wall surface of the Z-axis side wall 711, and the wireless receiving coil is positioned by the magnetic induction groove 717 is positioned on the inner side wall 717, and the wireless receiving device is positioned on the inner side wall 102.

The inner peripheral wall surface of the first cylindrical shell 51 is provided with a sliding groove 55 extending along the Z-axis direction, the outer peripheral wall surface of the second side plate 714 is provided with a sliding protrusion matched with the sliding groove 55, the sliding protrusion is slidably matched with the groove wall of the sliding groove 55 along the Z-axis direction, and the sliding groove 55 is matched with the sliding protrusion to form at least three groups distributed along the circumferential direction of the knob body; alternatively, in other embodiments of the present utility model, a chute extending along the Z-axis direction may be disposed on the outer peripheral wall of the second side plate, and a sliding protrusion may be disposed on the inner peripheral wall of the first cylindrical housing, so that the sliding fit between the first housing and the base may be achieved.

The first housing 71 is further integrally formed with a connecting post 715 extending positively in the Z-axis direction from the annular step plate 713, and a plug hole 716 extending in the Z-axis direction is formed at the positive end of the connecting post 715 in the Z-axis direction, the main body of the second housing 72 has a circular plate structure with a main surface normal in the Z-axis direction, plug posts 721 extending negatively in the Z-axis direction are integrally formed on the negative side wall of the Z-axis direction of the second housing 72, the plug posts 721 are plugged into the plug holes 716 in a one-to-one correspondence, and the connecting post 715 is fixedly connected with the plug posts 721 by screws (not shown in the figure).

The third housing 73 has an integrally formed carrier plate 731 and a connecting cylinder 732, the carrier plate 731 is in the shape of a circular ring, the normal line of the main surface of the carrier plate 731 is in the shape of a cylinder along the Z-axis direction, the connecting cylinder 732 is in the shape of a cylinder, both the center line of the carrier plate 731 and the center line of the connecting cylinder 732 coincide with the rotation axis of the rotor mechanism 11, the diameter of the connecting cylinder 732 is smaller than that of the carrier plate 731, the connecting cylinder 732 extends from the radially inner end of the carrier plate 731 to the Z-axis in the negative direction, and the display module 14 is covered on the positive Z-axis side of the carrier plate 731 and is fixedly connected with the carrier plate 731.

The Z-axis positive side wall surface of the second housing frame 72 is provided with a first boss 722 and a second boss 723 which are integrally formed, the first boss 722 and the second boss 723 are annular tables with central lines coincident with the rotation axis of the rotor mechanism 11, the second boss 723 is positioned at the radial outer side of the first boss 722, the Z-axis negative end of the connecting cylinder 732 is inserted and sleeved on the peripheral wall of the first boss 722, the connecting cylinder 732 is fixedly connected with the first boss 722 through screws (not shown in the drawings), and alternatively, in other embodiments of the utility model, the connecting cylinder 732 and the first boss 722 can be fixedly connected in other manners such as gluing, buckling and the like.

The rotor mechanism 11 is rotatably around the outer periphery of the connection cylinder 732 and is located between the Z-axis negative side of the bearing disk 731 and the Z-axis positive side of the second housing 72, the rotor mechanism 11 includes a magnet bracket 113, a connection web 112 and a second cylindrical housing 111 that are sequentially connected from inside to outside in the radial direction, the second cylindrical housing 111 is cylindrical, the connection web 112 is an annular plate whose main surface normal line coincides with the rotation axis of the rotor mechanism 11 in the Z-axis direction, the center line of the second cylindrical housing 111 and the center line of the connection web 112 are both coincident with the rotation axis of the rotor mechanism 11, the radially outer end of the connection web 112 is connected to the inner peripheral wall of the second cylindrical housing 111, the magnet bracket 113 extends from the radially inner end of the connection web 112 to the Z-axis negative direction, the magnetic body 12 is fixedly connected to the radially inner side wall of the magnet bracket 113, the bearing 13 is connected between the rotor mechanism 11 and the second housing 72, the inner ring of the bearing 13 is connected to the radially outer side wall (outer peripheral wall) of the magnet bracket 113, the outer ring of the bearing 13 is cooperatively connected to the radially inner side wall (inner peripheral wall) of the second boss 723, and the second cylindrical housing 111 is surrounded by the display module 14, the radially outer peripheral wall 723 and the outer peripheral boss 723 of the bearing disk 723.

The magnetic sensor 104 is positioned in the cylinder cavity of the connecting cylinder 732 through the circuit board 103, the circuit board 103 is electrically connected with the main control board 101 through a flat cable, the rotation axis of the rotor mechanism 11 passes through the magnetic sensor 104, the magnetic body 12 comprises a first magnet 121 and a second magnet 122, the first magnet 121 and the second magnet 122 are respectively fixedly arranged on the magnet bracket 113, the first magnet 121 and the second magnet 122 are arranged at intervals along the radial direction (X-axis direction in the drawing) of the knob body and are respectively arranged at two sides of the magnetic sensor 104 (respectively arranged at two sides of the rotation axis of the rotor mechanism 11), and the distance from the first magnet 121 to the magnetic sensor 104 is equal to the distance from the second magnet 122 to the magnetic sensor 104.

The first magnet 121 and the second magnet 122 are square bodies, the first magnet 121, the magnetic sensor 104 and the second magnet 122 are sequentially distributed along the X-axis direction, the normal line of the end face of the first magnet 121 facing the magnetic sensor 104 side is along the X-axis direction, the normal line of the end face of the second magnet 122 facing the magnetic sensor 104 side is along the X-axis direction, the magnetization directions of the first magnet 121 and the second magnet 122 are all along the X-axis direction, the south pole of the first magnet 121 faces the magnetic sensor 104 and the second magnet 122, the north pole of the second magnet 122 faces the magnetic sensor 104 and the first magnet 121, and the magnetic field between the first magnet 121 and the second magnet 122 passes through the magnetic sensor 104 along the X-axis direction, so that when a user operates the rotor mechanism 11 to rotate, the first magnet 121, the second magnet 122 and the magnetic field between the first magnet and the second magnet rotate relative to the magnetic sensor 104, and the rotation angle position of the rotor mechanism 11 is detected through the magnetic sensor 104, and the knob function is achieved. Alternatively, in other embodiments of the present utility model, the first magnet and the second magnet 122 may be other than square, for example, the normal line of the first magnet 121 and the second magnet 122 may have a sector ring shape along the Z-axis direction; of course, the first magnet 121 and the second magnet 122 are preferably square, so that the magnetic field direction of the area between the first magnet 121 and the second magnet 122 is relatively consistent, which is beneficial to reducing the accuracy requirement on the installation position of the magnetic sensor 104.

In this embodiment, since the magnetic body 12 is configured as the first magnet 121 and the second magnet 122 that are separately arranged, the knob body of this embodiment can flexibly adjust the distance between the first magnet 121 and the second magnet 122 based on the reasonable factors of structure and space utilization, so that the structure and space design of the knob body can be more reasonable, for example, the distance between the first magnet 121 and the second magnet 122 of this embodiment can be different from the inner diameter of any national standard ring-shaped magnet; of course, in other embodiments of the present utility model, the position of the magnetic sensor may be adjusted as desired, for example, by positioning the magnetic sensor above the barrel cavity of the connecting barrel.

In this embodiment, the number of the matching positions of the knob body on the panel 1 is two, the two matching positions are a first position and a second position, each matching position corresponds to a set of combination of the first positioning magnetic attraction piece 3, the wireless charging transmitting coil 4 and the identification magnet 2, the magnetic fields generated by the two identification magnets 2 corresponding to the matching positions have differences, and the magnetic induction device 102 is used for identifying the identity of the matching position where the knob body is currently located by sensing the magnetic field generated by the identification magnet 2 corresponding to the matching position.

The technical scheme of using the combination of the magnetic induction device 102 and the identification magnet 2 to identify the identity of the matching position is substantially the same as the technical scheme of using the combination of the magnetic sensor and the magnet to identify the type of the article, detecting the rotation angle position and the like in the prior art, so that the combination setting mode of the magnetic induction device 102 and the identification magnet 2 can refer to the Chinese patent application schemes of identifying the type of the article, such as CN113900051A, CN113900052A and the like, and refer to the Chinese patent application schemes of detecting the rotation angle position, such as CN219105996U and the like.

Specifically, for example, the magnetization direction of the identification magnet 2 corresponding to the first position is along the X-axis direction, and the magnetization direction of the identification magnet 2 corresponding to the second position is along the Y-axis direction, so that when the base 5 and the lifting mechanism 7 can be positioned at the corresponding mating positions only in a unique posture (for example, one of the magnets of the first positioning magnet 3 has a south pole facing positive in the Z-axis direction, the other five magnets have a north pole facing positive in the Z-axis direction, and the other five magnets have a north pole facing negative in the Z-axis direction, and the other five magnets have a south pole facing negative in the Z-axis direction, respectively, in the magnets of the second positioning magnet 6, respectively), and when the magnets of the first positioning magnet 3 and the magnets of the second positioning magnet 6 are attracted together, the base 5 and the lifting mechanism 7 are positioned at the corresponding mating positions in the unique posture, and when the knob body is positioned at any mating positions, the positive in the Z-axis direction of the corresponding identification magnet 2, the magnetic induction device 102 is opposite to the positive in the Z-axis direction of the corresponding positioning magnet, so that if the magnetic field direction detected by the magnetic induction device 102 is along the X-axis direction, the first position is the first position and the second position is the magnetic induction position is obtained.

For example, when the knob body is positioned at any matching position (only the knob body is positioned at the matching position, but the circumferential angle posture of the knob body when positioned at the matching position is not required), the magnetic induction device 102 is opposite to the positive Z-axis side of the corresponding identification magnet 2, but the magnetic field intensity of the identification magnet 2 corresponding to the first position is 200 gauss, and the magnetic field intensity of the identification magnet 2 corresponding to the second position is 400 gauss, so that if the magnetic field intensity detected by the magnetic induction device 102 is 200 gauss, the matching position of the knob body at this time is the first position, and similarly, if the magnetic field intensity detected by the magnetic induction device 102 is 400 gauss, the matching position of the knob body at this time is the second position.

Of course, in other embodiments of the present utility model, the magnetization direction, the magnetic field strength, etc. of the identification magnets 2 may be adjusted, so long as the magnetic fields generated at the corresponding mating positions by the identification magnets 2 have differences (the magnetic field strengths have differences, or the magnetic field directions have differences) for distinguishing the identities of the mating positions, the object of the present utility model can be achieved.

In addition, since the magnetic induction device 102 is disposed on the lifting mechanism 7 in the present embodiment, the lifting mechanism 7 will move relatively to the identification magnet 2 when being pressed by the user, so that the present embodiment conditionally uses the combination of the magnetic induction device 102 and the identification magnet to detect whether the lifting mechanism 7 is pressed, and realizes the key function.

For example, in the above-mentioned scheme of "the magnetization direction of the identification magnet 2 corresponding to the first position is along the X-axis direction and the magnetization direction of the identification magnet 2 corresponding to the second position is along the Y-axis direction", pressing the lifting mechanism 7 causes the magnetic field intensity detected by the magnetic induction device 102 to change, and thus it can be detected whether the lifting mechanism 7 is pressed (the same principle as the pressing detection of the chinese patent No. CN 219105996U), specifically, for example, when the knob body is positioned and engaged in the first position in a free state (not pressed), the magnetic field intensity detected by the magnetic induction device 102 is 300 gauss, and when the user presses the lifting mechanism 7 in the negative direction along the Z-axis, the magnetic field intensity detected by the magnetic induction device 102 is enhanced (for example, enhanced to 350 gauss), so it can be detected whether the lifting mechanism 7 is pressed according to the magnetic field intensity change detected by the magnetic induction device 102.

For example, in the above-mentioned scheme of "the magnetization direction of each identification magnet 2 is along the Z-axis direction", when the knob body is positioned and engaged in the first position in a free state (not pressed), the magnetic field intensity detected by the magnetic induction device 102 is 200 gauss, and then after the user presses the lifting mechanism 7 in the negative direction along the Z-axis, the magnetic field intensity detected by the magnetic induction device 102 is enhanced (for example, 250 gauss), so that whether the lifting mechanism 7 is pressed or not can be detected according to the change of the magnetic field intensity detected by the magnetic induction device 102.

Alternatively, in other embodiments of the present utility model, other keys in the prior art may be fixed on the lifting mechanism to detect whether the lifting mechanism is pressed, where the key abuts against the base, and when the user presses the lifting mechanism, the lifting mechanism moves negatively along the Z-axis relative to the base to trigger the key, so as to detect whether the lifting mechanism is pressed by the key.

In this embodiment, the matching positions are respectively corresponding to the wireless charging transmitting coil 4, so that the knob body can not only realize the knob function thereof, but also realize the wireless charging function when in the matching position. Alternatively, in other embodiments of the present utility model, instead of providing the corresponding wireless charging transmitting coil 4 for the mating position, a dedicated charging position may be additionally provided, where the wireless charging transmitting coil 4 is correspondingly provided, and the knob body only performs charging when located at the charging position, and only performs the knob function when located at the mating position, so that not only is the number of wireless charging transmitting coils 4 advantageously reduced, but also the charging position may cancel the identification magnet 2, and optionally, the first positioning magnet 3 with weaker magnetic field strength may also be provided or the first positioning magnet 3 may be cancelled, so as to weaken and eliminate interference of the identification magnet 2 and the first positioning magnet 3 on the wireless charging process.

In other embodiments of the present utility model, the magnetic body 12 may be a single annular magnet fixed to the rotor mechanism 11, and the specific scheme of fixing the single annular magnet to the rotor mechanism 11 may be set with reference to CN219105997U, which is not described herein; or the magnetic body can also be a multipolar magnetic ring fixedly arranged on the rotor mechanism, and the central line of the multipolar magnetic ring is overlapped with the rotation axis of the rotor mechanism; or the magnetic body may be a single magnet which is in driving connection with the rotor mechanism, for example, the single magnet is in driving connection with the rotor mechanism through a gear (not shown in the figure), the gear is rotatably mounted on the lifting mechanism 7 or the base 5, the single magnet is fixed on the gear, a gear ring which is in meshing transmission with the gear is arranged on the rotor mechanism, when the rotor mechanism is rotated, a user drives the single magnet to rotate through meshing of the gear ring and the gear, and a specific scheme of the single magnet, the gear and the gear ring can be set by referring to the Chinese patent of the utility model with publication number CN219105996U, and the detailed description is omitted herein.

In the embodiment, a reset button 15 directly extruded between the base 5 and the lifting mechanism 7 is used as a return mechanism; alternatively, in other embodiments of the present utility model, a spring piece, elastic silica gel, or the like may be used as the return mechanism instead of the return button 15 of the present embodiment, and the return mechanism may be directly pressed between the base and the lifting mechanism, or the return mechanism may be indirectly pressed between the base and the lifting mechanism (for example, the return mechanism may be directly pressed between the base and a rotor mechanism that is lifted in synchronization with the lifting mechanism).

The rotor mechanism 11 of this embodiment is rotatably mounted to the lifting mechanism 7, and the rotor mechanism 11 is lifted together with the lifting mechanism 7, alternatively, in other embodiments of the present utility model, the rotor mechanism may be rotatably mounted to the base, and the rotor mechanism may only rotate relative to the base, but not lift relative to the base along with the lifting mechanism, for example, the rotor mechanism may be rotatably mounted to the base in chinese patent CN219105996U, CN218601734U, and the rotor mechanism may only rotate relative to the base.

The base 5 of the embodiment is annular, the lifting mechanism 7 extends into a cavity at the radial inner side of the base 5 and is directly opposite to the panel 1, and the wireless charging transmitting coil 4 and the wireless charging receiving coil 8 are coupled with the radial inner side spaces of the base 5, the first positioning magnetic attraction piece 3 and the second positioning magnetic attraction piece 6, so that the blocking effect of the base 5 on the coupling charging of the wireless charging transmitting coil 4 and the wireless charging receiving coil 8 is reduced, and the blocking effect of the base 5 on the detection of the identification magnet 2 by the magnetic induction device 102 is reduced; alternatively, in other embodiments of the present utility model, a matching groove cavity may be disposed at a negative Z-axis end of the lifting mechanism, the negative Z-axis end of the base may be detachably positioned and matched with the base under the magnetic attraction force of the first positioning magnetic attraction member and the second positioning magnetic attraction member (in this embodiment, the first positioning magnetic attraction member and the second positioning magnetic attraction member preferably have a magnet, for example, the scheme of the chinese patent application CN110895053 a), the positive Z-axis end of the base extends into the matching groove cavity and is movably matched with the lifting mechanism along the Z-axis direction, the combination of the magnetic induction device and the corresponding identification magnet is located at one side of the combination of the base, the second positioning magnetic attraction member and the corresponding first positioning magnetic attraction member, and the coupling of the wireless charging transmitting coil and the wireless charging receiving coil is disposed around the base, the first positioning magnetic attraction member and the second positioning magnetic attraction member.

The number of the matching positions is two, and the identity of the matching position where the knob body is located is detected through the combination of the magnetic induction device and the identity recognition magnet, alternatively, in other embodiments of the present utility model, the number of the matching positions can be one, so that the identity of the matching position does not need to be recognized, and the combination of the magnetic induction device and the identity recognition magnet does not need to be arranged.

The electric appliance of the embodiment can be, for example, an electric appliance such as a refrigerator, a washing machine and an air conditioner, the electric appliance of the embodiment comprises a knob assembly of the embodiment, a base body forms a part of a machine body of the electric appliance, a panel forms a part of a machine shell of the electric appliance, for example, the electric appliance is a washing machine, the washing machine has a matching position on the surface of the machine shell, and the knob body is used for adjusting a washing mode of the washing machine when being matched with the matching position; for another example, the appliance is a refrigerator, the refrigerator surface has a mating position, and the knob body is used to adjust the refrigeration temperature of the refrigerator when positioned in the mating position of the refrigerator surface.

Finally, it should be emphasized that the foregoing description is merely illustrative of the preferred embodiments of the utility model, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and principles of the utility model, and any such modifications, equivalents, improvements, etc. are intended to be included within the scope of the utility model.

Claims

1. A knob body including a seat for detachably engaging with an external base;

The method is characterized in that:

The lifting mechanism is movably arranged on the base along the rotation axis direction of the rotor mechanism, and the return mechanism acts between the base and the lifting mechanism and is used for forcing the lifting mechanism to be kept at one end of the moving stroke far away from the base;

the rotor mechanism is rotatably arranged on the base or the lifting mechanism;

The electric control unit and the wireless charging receiving coil are both fixedly arranged on the lifting mechanism, and the electric control unit is electrically connected with the wireless charging receiving coil.

2. The knob assembly comprises a base body and a knob body, wherein the base body comprises a wireless charging transmitting coil, the knob body comprises a base and a wireless charging receiving coil, the base is detachably matched with the base body, and the wireless charging receiving coil is used for being coupled with the wireless charging transmitting coil;

The method is characterized in that:

The knob body further comprises a lifting mechanism, a return mechanism, an electric control unit and a rotor mechanism, wherein the lifting mechanism is movably arranged on the base along the rotation axis direction of the rotor mechanism, and the return mechanism acts between the base and the lifting mechanism and is used for forcing the lifting mechanism to be kept at one end of the moving stroke of the lifting mechanism, which is far away from the base body;

the rotor mechanism is rotatably arranged on the base or the lifting mechanism;

3. The knob assembly according to claim 2, wherein:

the base is fixedly provided with a first positioning magnetic attraction piece, the base is fixedly provided with a second positioning magnetic attraction piece, and the base is detachably positioned and matched with the base under the action of magnetic attraction of the first positioning magnetic attraction piece and the second positioning magnetic attraction piece.

4. The knob assembly according to claim 3, wherein:

The base is annular, the second positioning magnetic attraction piece is arranged along the annular direction of the base, the first positioning magnetic attraction piece and the second positioning magnetic attraction piece are opposite to each other along the rotation axis direction, and the wireless charging transmitting coil and the wireless charging receiving coil are coupled to the radial inner space of the combination of the base, the first positioning magnetic attraction piece and the second positioning magnetic attraction piece;

or the lifting mechanism is provided with a matching groove cavity towards one end of the base body, one end of the base is detachably matched with the base body in a positioning way under the action of the magnetic attraction force of the first positioning magnetic attraction piece and the second positioning magnetic attraction piece, the other end of the base extends into the matching groove cavity and is movably matched with the lifting mechanism along the direction of the rotation axis, and the wireless charging receiving coil is arranged around the base body.

5. The knob assembly according to claim 2, wherein:

The knob body is provided with a sealing cavity in the lifting mechanism, and the electric control unit and the wireless charging receiving coil are both positioned in the sealing cavity;

The lifting mechanism is fixedly provided with a battery, the battery is electrically connected with the wireless charging receiving coil, the battery is used for supplying power to the electric control unit, and the battery is positioned in the sealing cavity;

The lifting mechanism is fixedly provided with a display module, the display module is positioned at one end of the lifting mechanism far away from the base body along the direction of the rotation axis, and the display module is electrically connected with the electric control unit;

The sealing cavity is enclosed by the display module and the lifting mechanism;

The base body comprises a panel, the knob body is detachably positioned and matched on the outer side wall of the panel, and the wireless charging transmitting coil is fixedly arranged on the inner side of the panel.

6. The knob assembly according to claim 2, wherein:

The rotor mechanism is fixedly provided with a magnetic body or is connected with the magnetic body in a transmission way;

The electric control unit comprises a magnetic sensor fixedly arranged on the lifting mechanism, and the magnetic sensor senses the rotating angle position of the rotor mechanism through sensing the magnetic body.

7. The knob assembly according to claim 6, wherein:

the rotor mechanism is fixedly provided with a gear ring, the lifting mechanism or the base is rotatably provided with a gear, the gear is meshed with the gear ring for transmission, and the magnetic body is fixedly arranged on the gear.

8. The knob assembly according to claim 6, wherein:

The magnetic body comprises a first magnet and a second magnet which are fixedly arranged on the rotor mechanism, the first magnet and the second magnet are deviated from the rotation axis of the rotor mechanism, and a magnetic field between the first magnet and the second magnet passes through the magnetic sensor;

Or the magnetic body comprises a multipole magnetic ring fixedly arranged on the rotor mechanism, the central line of the multipole magnetic ring coincides with the rotation axis of the rotor mechanism, and the magnetic sensor deviates from the rotation axis of the rotor mechanism and is adjacent to the multipole magnetic ring.

9. The knob assembly according to any one of claims 2-8, wherein:

the electric control unit comprises a pressing detection device fixedly arranged on the lifting mechanism;

The pressing detection device comprises a key abutting against the base, or comprises a magnetic induction device for inducing magnetic field change.

10. An electrical appliance, characterized in that:

A knob assembly according to any one of claims 2 to 9, said base forming part of a body of said appliance, said body being in wireless communication with said knob body.