CN210156311U - Knob device and household appliance - Google Patents
Knob device and household appliance Download PDFInfo
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- CN210156311U CN210156311U CN201921033714.7U CN201921033714U CN210156311U CN 210156311 U CN210156311 U CN 210156311U CN 201921033714 U CN201921033714 U CN 201921033714U CN 210156311 U CN210156311 U CN 210156311U
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- knob
- permanent magnet
- magnetic sensor
- permanent magnets
- operation panel
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Abstract
The utility model is suitable for an electron device technical field provides a knob device and domestic appliance, the knob device includes the magnetic sensor and the knob subassembly that detect the induction field of two dimensions at least, the magnetic sensor with the knob subassembly is established respectively in operating panel both sides; the knob assembly comprises a knob and a plurality of first permanent magnets which are annularly arranged in the center of the shaft of the knob; the knob can rotate around the shaft center of the knob, and the first permanent magnets rotate along with the knob; the magnetic sensor is offset from the axial center of the knob. The embodiment of the utility model provides a through set up the magnetic sensor that detects two dimensions at least of the axle center of skew knob and with a plurality of first permanent magnets of the axle center annular arrangement of knob, come to respond to the rotation angle of knob, because magnetic sensor and first permanent magnet stability are good, longe-lived, make switch knob stability good, longe-lived to guarantee switch knob's sensitivity.
Description
Technical Field
The utility model belongs to the technical field of the electron device, especially, relate to a knob device and domestic appliance.
Background
A switch knob is a control device widely used in household appliances. Traditional switch knob is mostly the knob of physical connection, like potentiometre formula switch knob, take pole coding formula switch knob etc. and the defect that exists lies in, needs trompil on the installation panel, destroys the integrality of panel, and direction atress intensity and leakproofness worsen, still can influence life because of mechanical structure's wearing and tearing in addition.
Based on the above-mentioned defect, the knob of traditional physical connection has been eliminated gradually, and the substitute is induction type switch knob, and induction type switch knob generally adopts the magnetic induction technique to come the rotation of response knob to reach on-off control's purpose, thereby avoid trompil on the panel.
Among the prior art, the induction type switch knob that uses at present is mostly induction coding switch knob, and its rotation through the encoder that comprises a plurality of magnet and a plurality of hall switch responds to the knob, and the defect of existence lies in, and the encoder can be because of vibrations emergence displacement, leads to coding error or inefficacy to the sensitivity that leads to switch knob can't be guaranteed.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a knob device and domestic appliance aims at solving the technical problem of the unable sensitivity of guaranteeing switch knob of induction type switch knob among the prior art.
The embodiment of the utility model provides a realize like this, a knob device, the device includes magnetic sensor and the knob subassembly that detects the induction field of two dimensions at least, magnetic sensor and the knob subassembly is established respectively in operating panel both sides;
the knob assembly comprises a knob and a plurality of first permanent magnets which are annularly arranged in the center of the shaft of the knob;
the knob can rotate around the shaft center of the knob, and the first permanent magnets rotate along with the knob;
the magnetic sensor deviates from the shaft center of the knob, and when the first permanent magnet rotates along with the knob, the magnetic field sensed by the magnetic sensor changes correspondingly.
Furthermore, a plurality of first permanent magnets are fixedly arranged on the knob.
Still further, the apparatus further includes a printed board on which the magnetic sensor is disposed.
Still further, the device further comprises a positioning component fixed on the operation panel, and the knob can rotate around the positioning component.
Furthermore, the positioning assembly comprises a positioning body, a first fixed permanent magnet and a second fixed permanent magnet, wherein the first fixed permanent magnet is fixedly arranged on the positioning body, the second fixed permanent magnet is arranged opposite to the first fixed permanent magnet, and the first fixed permanent magnet and the second fixed permanent magnet are respectively arranged on two sides of the operation panel.
Furthermore, one end of the positioning body, which is adjacent to the operation panel, is provided with a non-slip groove, a non-slip pad is arranged in the non-slip groove, and the non-slip pad is fixedly arranged on the operation panel.
Still further, the positioning assembly further comprises a permanent magnet carrier detachably arranged on the positioning body.
Furthermore, the permanent magnet bearing piece is provided with a plurality of second permanent magnets which are in one-to-one correspondence with the first permanent magnets, the knob is provided with a third permanent magnet, and when the knob rotates, the third permanent magnet is attracted with each second permanent magnet one by one.
Furthermore, a fourth permanent magnet is arranged on the permanent magnet bearing piece, and when the knob rotates, the fourth permanent magnet is attracted with each first permanent magnet one by one.
The utility model discloses another aspect still provides a domestic appliance, domestic appliance includes operating panel and sets up adjusting device on the operating panel, adjusting device is foretell knob device.
The utility model discloses the beneficial effect who reaches: the embodiment of the utility model provides a through set up the magnetic sensor that detects two dimensions at least of the axle center of skew knob and with a plurality of first permanent magnets of the axle center annular arrangement of knob, come to respond to the rotation angle of knob, because magnetic sensor and first permanent magnet stability are good, longe-lived, make switch knob stability good, longe-lived to guarantee switch knob's sensitivity.
Drawings
Fig. 1 is an exploded view of a knob device according to a first embodiment of the present invention;
fig. 2 is an assembly view of the knob assembly and the positioning assembly according to the first embodiment of the present invention;
fig. 3 is a cross-sectional view of a knob device according to a first embodiment of the present invention;
fig. 4 is an exploded view of the knob device according to the second embodiment of the present invention;
fig. 5 is an assembly view of the knob assembly and the positioning assembly according to the second embodiment of the present invention;
fig. 6 is a perspective view of a knob according to a second embodiment of the present invention;
fig. 7 is an exploded view of the knob device according to the third embodiment of the present invention;
fig. 8 is an assembly view of the knob assembly and the positioning assembly according to the third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the utility model provides a knob device, including detect the magnetic sensor and the knob subassembly of the induction field of two dimensions at least, magnetic sensor and the knob subassembly is established in operating panel both sides respectively; the knob assembly comprises a knob and a plurality of first permanent magnets which are annularly arranged at the center of the shaft of the knob, and the first permanent magnets form a variable magnetic field along the arrangement direction; the magnetic sensor deviates from the shaft center of the knob, and when the first permanent magnet rotates along with the knob, the magnetic field sensed by the magnetic sensor changes correspondingly. The embodiment of the utility model provides a through set up the magnetic sensor that detects two dimensions at least of the axle center of skew knob and with a plurality of first permanent magnets of the axle center annular arrangement of knob, come to respond to the rotation angle of knob, because magnetic sensor and first permanent magnet stability are good, longe-lived, make switch knob stability good, longe-lived to guarantee switch knob's sensitivity.
Example one
Referring to fig. 1 to 3, a first embodiment of the present invention provides a knob device, which includes a knob assembly 10, a positioning assembly 20, a magnetic sensor 30 and a printed board 40, wherein the knob assembly 10 and the magnetic sensor 30 are respectively disposed on two sides of an operation panel 200, and the knob assembly 10 is fixed on the operation panel 200 through the positioning assembly 20, wherein:
the knob assembly 10 includes a knob 11, a holding body 12 fixedly connected to the knob 11, and a plurality of first permanent magnets 13 disposed on the holding body 12, wherein the plurality of first permanent magnets 13 are annularly arranged around an axial center of the knob 11 and rotate together with the knob 11. The knob 11 is in a cover shape and is concentrically covered on the clamping body 12 and is in snap connection with the clamping body 12, so that the clamping body 12 rotates along with the knob 11.
In the present embodiment, the first permanent magnet 13 is horizontally disposed, that is, the magnetic poles (N pole and S pole) are perpendicular to the axial center of the knob 11, and since the magnetic strength at the two ends of the magnet is the maximum (the magnetic induction lines are denser) and the magnetic strength toward the middle is smaller (the magnetic induction lines are thinner), when the first permanent magnet 13 rotates with the knob 11, the magnetic sensor 30 can sense the corresponding magnetic field strength and direction change. In other embodiments, in order for the magnetic sensor 30 to recognize the magnetic field change when the first permanent magnet 13 rotates with the knob 11, the first permanent magnets 13 may be arranged in the following two ways:
the magnetic field intensity of each first permanent magnet 13 is different, and when the first permanent magnets 13 are annularly arranged around the shaft center of the knob 11, the first permanent magnets 13 are sequentially arranged according to the high-low order of the magnetic field intensity, so that the first permanent magnets 13 form a changing magnetic field along the arrangement direction; or
And (II) obliquely placing the first permanent magnets 13, wherein the inclination angle is more than or equal to 0 degree and less than 90 degrees, so that the plurality of first permanent magnets 13 form a variable magnetic field along the arrangement direction. It can be understood that, when the inclination angle equals 90, the first permanent magnet 13 is placed vertically, and the magnetic pole direction is parallel to the axial center of the knob 11, and if the magnetic field intensity of each first permanent magnet 13 is equal at this moment, the magnetic field intensity sensed by the magnetic sensor 30 is fixed, and the rotary recognition effect cannot be achieved, so that the first permanent magnet 13 is prevented from being placed vertically.
The positioning assembly 20 includes a positioning body 21, a first fixed permanent magnet 22 fixedly disposed on the positioning body 21, and a second fixed permanent magnet 23 disposed opposite to the first fixed permanent magnet 22. The outer side of the positioning body 21 is provided with a first flange 211 and a detachable second flange 212 at intervals, the clamping body 12 is concentrically sleeved on the positioning body 21, clamped between the first flange 211 and the second flange 212, and can rotate relative to the axial center of the positioning body 21, so that the knob 11 can rotate around the axial center of the positioning assembly 20, that is, the knob 11 can rotate around the axial center of the knob 11. The positioning body 21 is provided with a hollow 213, the first fixed permanent magnet 22 is fixedly arranged in the hollow 213, the first fixed permanent magnet 22 and the second fixed permanent magnet 22 are respectively arranged at two sides of the operation panel 200, and the first fixed permanent magnet 22 and the second fixed permanent magnet 22 are magnetically attracted with each other to magnetically fix the positioning body 21 on the operation panel 200. When the permanent magnet is installed, the first fixed permanent magnet 22 and the second fixed permanent magnet 22 can be installed and positioned through mutual attraction, and the magnetic attraction is adopted for fixation, so that the disassembly is convenient.
In this embodiment, the second flange 212 is disposed at an end of the positioning body 21 away from the operation panel 200, specifically, the second flange 212 is detachably connected to the top of the positioning body 21 by being clamped, the first flange 211 is integrally formed with the positioning body 21, and the first flange 211 is close to the bottom of the positioning body 21. In other embodiments, the second flange 212 may be detachably connected to the positioning body 21 by screwing, magnetic attraction, adhesion, or the like.
In order to further fix the positioning assembly 20, a non-slip groove is disposed on the positioning body 21 at an end adjacent to the operation panel 200, specifically, the non-slip groove is disposed at the bottom of the first flange 211, a non-slip pad 24 is disposed in the non-slip groove, and the non-slip pad 24 is fixedly disposed on the operation panel 200, so as to prevent the positioning body 21 from moving against the operation panel 200. The non-slip mat 24 is preferably a rubber mat, and in practical applications, the non-slip mat 24 may be fixedly connected to the operation panel 200 by means of adhesion, screw connection, adsorption, clamping, or the like.
The magnetic sensor 30 is fixed on the printed board 40 and is deviated from the axial center of the knob 11, in the present embodiment, the magnetic sensor 30 is a 3D magnetic sensor, and when the first permanent magnet 13 rotates together with the knob 11, the magnetic field induced by the magnetic sensor 30 is changed accordingly, thereby recognizing the rotation of the knob 11.
Among them, the 3D magnetic sensor can realize highly accurate three-dimensional sensing with extremely low power consumption, and can reliably sense three-dimensional, linear, and rotational motions by detecting magnetic fields in x, y, and z-axis directions. In other embodiments, the magnetic sensor 30 may also be other magnetic sensors that detect the induced magnetic field in at least two dimensions, such as a two-axis magnetic sensor.
To sum up, knob device among this embodiment is owing to adopt a new knob structure and collocation 3D magnetic sensor to respond to the rotation of knob 11, does not rely on the encoder, and compares in the encoder, and the temperature floats for a short time to guarantee switch knob's sensitivity.
The embodiment of the utility model provides a through set up the magnetic sensor that detects two dimensions at least of the axle center of skew knob and with a plurality of first permanent magnets of the axle center annular arrangement of knob, come to respond to the rotation angle of knob, because magnetic sensor and first permanent magnet stability are good, longe-lived, make switch knob stability good, longe-lived to guarantee switch knob's sensitivity.
Example two
Referring to fig. 4 to 6, a knob device according to a second embodiment of the present invention is shown, which is different from the knob device according to the first embodiment in that:
in this embodiment, the second flange 212 serves as a permanent magnet carrier, the permanent magnet carrier is provided with a plurality of second permanent magnets 25 corresponding to the first permanent magnets 13 one by one, the knob 11 is provided with third permanent magnets 14 (as shown in fig. 6), and when the knob 11 rotates, the third permanent magnets 14 attract each second permanent magnet 14 one by one.
It should be noted that each second permanent magnet 25 corresponds to a gear, when the knob 11 rotates, each gear is reached, the third permanent magnet 14 directly faces one second permanent magnet 25, the magnetic force is relatively large, and when the knob 11 rotates to the next gear, the third permanent magnet 14 and the second permanent magnet 25 corresponding to the next gear generate attraction, so that the knob 11 automatically rotates to the next gear, a user can obviously sense the gear, and the hand feeling when the knob 11 rotates is improved.
In addition, it should be noted that the implementation principle and some beneficial effects of the apparatus in the embodiment are the same as those of the apparatus in the first embodiment, so that the present embodiment is mentioned, and reference may be made to the application contents in the first embodiment.
EXAMPLE III
Referring to fig. 7 to 8, a knob device according to a third embodiment of the present invention is shown, which is different from the knob device according to the first embodiment in that:
in this embodiment, the second flange 212 is used as a permanent magnet carrier, one side of the permanent magnet carrier extends out of a shift arm 2121 towards the first flange 211, the shift arm 2121 is provided with a fourth permanent magnet 26, and when the knob 11 rotates, the fourth permanent magnet 26 is attracted to each first permanent magnet 13 one by one.
It should be pointed out that, each position of the first permanent magnet 13 corresponds to a gear, when the knob 11 rotates, the fourth permanent magnet 26 faces a first permanent magnet 13 when each gear is reached, the magnetic force is relatively large, and when the knob 11 rotates to the next gear, the fourth permanent magnet 26 generates suction with the first permanent magnet 13 corresponding to the next gear, so that the knob 11 automatically rotates to the next gear, a user can obviously sense the gear, and the hand feeling when the knob 11 rotates is improved.
In addition, it should be noted that the implementation principle and some beneficial effects of the apparatus in the embodiment are the same as those of the apparatus in the first embodiment, so that the present embodiment is mentioned, and reference may be made to the application contents in the first embodiment.
ExamplesFourthly
The embodiment of the utility model provides an on the other hand still provides a household appliance, household appliance includes operating panel and sets up adjusting device on the operating panel, adjusting device can be the knob device in any embodiment among the above-mentioned first to third embodiment.
Wherein, the operation panel is preferably a glass panel, and the household appliances comprise but are not limited to household appliances, ovens, dishwashers and other products.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A knob device is characterized by comprising a magnetic sensor and a knob assembly, wherein the magnetic sensor and the knob assembly detect induced magnetic fields with at least two dimensions and are respectively arranged on two sides of an operation panel;
the knob assembly comprises a knob and a plurality of first permanent magnets which are annularly arranged in the center of the shaft of the knob;
the knob can rotate around the shaft center of the knob, and the first permanent magnets rotate along with the knob;
the magnetic sensor deviates from the shaft center of the knob, and when the first permanent magnet rotates along with the knob, the magnetic field sensed by the magnetic sensor changes correspondingly.
2. The knob device according to claim 1, wherein a plurality of the first permanent magnets are fixedly disposed on the knob.
3. The knob device according to claim 1, further comprising a printed board on which the magnetic sensor is disposed.
4. The knob device according to any one of claims 1 to 3, further comprising a positioning member fixed to the operation panel, wherein the knob is rotatable about the positioning member.
5. The knob device according to claim 4, wherein the positioning assembly includes a positioning body, a first fixed permanent magnet fixedly disposed on the positioning body, and a second fixed permanent magnet disposed opposite to the first fixed permanent magnet, and the first fixed permanent magnet and the second fixed permanent magnet are disposed on two sides of the operation panel.
6. The knob device according to claim 5, wherein the positioning body has a non-slip groove at an end thereof adjacent to the operation panel, and the non-slip groove has a non-slip mat fixed thereon.
7. The knob device according to claim 5, wherein the positioning assembly further comprises a permanent magnet carrier removably disposed on the positioning body.
8. The knob device according to claim 7, wherein the permanent magnet carrier has a plurality of second permanent magnets corresponding to the first permanent magnets one to one, and the knob has a third permanent magnet, and when the knob rotates, the third permanent magnet attracts each of the second permanent magnets one by one.
9. The knob device according to claim 7, wherein a fourth permanent magnet is disposed on the permanent magnet carrier, and the fourth permanent magnet attracts each of the first permanent magnets one by one when the knob is rotated.
10. A household appliance, characterized in that the household appliance comprises an operation panel and an adjusting device arranged on the operation panel, wherein the adjusting device is the knob device of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921033714.7U CN210156311U (en) | 2019-07-03 | 2019-07-03 | Knob device and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921033714.7U CN210156311U (en) | 2019-07-03 | 2019-07-03 | Knob device and household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210156311U true CN210156311U (en) | 2020-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921033714.7U Active CN210156311U (en) | 2019-07-03 | 2019-07-03 | Knob device and household appliance |
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| Country | Link |
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| CN (1) | CN210156311U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910450A (en) * | 2021-03-25 | 2021-06-04 | 中国电子科技集团公司第三研究所 | Rotation type is digital coding switch under water based on magnetic sensing |
| WO2023029959A1 (en) * | 2021-08-31 | 2023-03-09 | 深圳市谷粒科技有限公司 | Electromagnetic induction potentiometer |
-
2019
- 2019-07-03 CN CN201921033714.7U patent/CN210156311U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910450A (en) * | 2021-03-25 | 2021-06-04 | 中国电子科技集团公司第三研究所 | Rotation type is digital coding switch under water based on magnetic sensing |
| WO2023029959A1 (en) * | 2021-08-31 | 2023-03-09 | 深圳市谷粒科技有限公司 | Electromagnetic induction potentiometer |
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