CN204731676U - Adjusting knob and electric appliance product - Google Patents
Adjusting knob and electric appliance product Download PDFInfo
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- CN204731676U CN204731676U CN201520507697.1U CN201520507697U CN204731676U CN 204731676 U CN204731676 U CN 204731676U CN 201520507697 U CN201520507697 U CN 201520507697U CN 204731676 U CN204731676 U CN 204731676U
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- 230000033228 biological regulation Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 33
- 238000010586 diagram Methods 0.000 description 6
- 230000006698 induction Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- SFBMLGJOOALENT-UHFFFAOYSA-N [Co].[Ni].[Nd] Chemical compound [Co].[Ni].[Nd] SFBMLGJOOALENT-UHFFFAOYSA-N 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
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Abstract
The utility model provides an adjust knob and electrical product. The utility model provides an adjusting knob, including knob body, base, hall sensor and magnet, the knob body can wind self rotation axis for the base is rotatory, magnet sets up this is internal for the knob, hall sensor sets up on the base, works as the knob body drives magnet produces when rotatory relative with hall sensor, hall sensor's voltage is followed the position change of magnet changes, with the hall sensor electricity is connected the control unit is used for the basis hall sensor's voltage obtains the knob body for the rotation angle and the direction of rotation of base. The utility model discloses can realize the accurate regulation of many gears.
Description
Technical field
The utility model relates to household appliance technical field, particularly relates to a kind of adjusting knob and electric equipment products.
Background technology
Household electrical appliance, when carrying out work, generally come the gear such as regulating power, pattern and size by adjusting knob.
At present, adjusting knob is generally divided into mechanical type or induction type two kinds, and wherein induction type adjusting knob is applied more and more extensive because its water resistance is better.Usual induction type adjusting knob have employed Hall switch and responds to.Concrete, magnet is equiped with in knob, and correspondence below the guidance panel of knob base, be equiped with several Hall switch, when knob rotates, Hall switch on knob base produces conducting one by one or disconnects action along with the rotation of magnet, thus corresponding selection and the adjustment carrying out gear, wherein Hall switch triggers once, and gear carries out Primary regulation.
But, when the gear of adjusting knob is more, the anglec of rotation between every two gears is less, and adopts existing induction type adjusting knob because the restriction of structure and cost, be difficult to the triggering ensureing Hall switch when the anglec of rotation is less, the fine adjustment of many gears cannot be realized.
Utility model content
The utility model provides a kind of adjusting knob and electric equipment products, utilizes Hall element to the adjusting angle of knob and regulates direction to respond to, thus realizing the fine adjustment of many gears.
On the one hand, the utility model embodiment provides a kind of adjusting knob, comprise knob body, base, Hall element, magnet and control module, knob body can rotate relative to base around its own rotation axis line, magnet is arranged in knob body, Hall element is arranged on base, when knob body band moving magnet produces the rotation relative with Hall element, the voltage of Hall element changes with the change in location of magnet, control module and Hall element electrical connection, control module is used for obtaining knob body relative to the anglec of rotation of base and sense of rotation according to the voltage of Hall element.
Further, magnet is N number of, and N number of magnet radially arranges around the axis of knob body, and the magnetic pole outside N number of magnet is all positioned at first circumferentially, and the polarity of adjacent outer magnetic pole is contrary, and wherein N is even number, N >=2.
Further, outside N number of magnet, the spacing of magnetic pole is equal.
Further, Hall element comprises the first Hall element and the second Hall element, first Hall element and the second Hall element are all positioned at second circumferentially, the line at the center of the first Hall element and the second circumference is the first line, the line at the center of the second Hall element and the second circumference is the second line, and the angle angle that the first line and the second line are formed is less than the angle between adjacent magnets.
Further, the center of the second circumference is on the axis of knob body.
Further, the first angle is 180/N degree.
Further, magnet is 4, corresponding, the angle of the angle that the first line and the second line are formed is 45 degree.
Further, the equal diameters of the first circumference and the second circumference.
Further, magnet is permanent magnet, and Hall element is linear hall sensor.
On the other hand, the utility model provides a kind of electric equipment products, and electric equipment products have guidance panel and adjusting knob as above, and knob body is arranged at guidance panel side, and base is arranged on guidance panel opposite side.
The adjusting knob that the utility model provides and electric equipment products, its adjusting knob comprises knob body, base, Hall element and magnet, knob body can rotate relative to base around its own rotation axis line, magnet is arranged in knob body, Hall element is arranged on base, when knob body band moving magnet produces the rotation relative with Hall element, the voltage of Hall element changes with the change in location of magnet, control module and Hall element electrical connection, control module is used for obtaining knob body relative to the anglec of rotation of base and sense of rotation according to the voltage of Hall element.The fine adjustment of many gears can be realized like this.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the adjusting knob that the utility model embodiment one provides;
Fig. 2 is the structural representation of the adjusting knob that the utility model embodiment two provides;
Fig. 3 is the change in voltage schematic diagram of knob body that the utility model embodiment two provides Hall element when being rotated counterclockwise;
Fig. 4 is the change in voltage schematic diagram of knob body that the utility model embodiment two provides Hall element when turning clockwise;
Fig. 5 is the workflow schematic diagram of the control module that the utility model embodiment two provides.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the structural representation of the adjusting knob that the utility model embodiment one provides.As shown in Figure 1, the adjusting knob that the present embodiment provides comprises knob body 1, base 2, Hall element 3, magnet 4 and control module 5, knob body 1 can rotate relative to base 2 around its own rotation axis line, magnet 4 is arranged in knob body 1, Hall element 3 is arranged on base 2, when knob body 1 produces the rotation relative with Hall element 3 with moving magnet 4, the voltage of Hall element 3 changes with the change in location of magnet 4, control module 5 and Hall element 3 are electrically connected, control module 5 is for obtaining knob body 1 relative to the anglec of rotation of base 2 and sense of rotation according to the voltage of Hall element 3.Wherein, Hall element 3 can be arranged on the side relative with magnet 4 of base 2, and Hall element 3 can be positioned at immediately below knob body 1 rotation, and just magnet 4 is arranged, or the rotation departing from knob body 1 is arranged, its concrete setting position does not limit, as long as the voltage of Hall element 3 can be followed magnet 4 change in location and change.
Concrete, this adjusting knob can be arranged on the guidance panel of the household electrical appliance such as electromagnetic oven, gas-cooker, and the knob body 1 of adjusting knob can be a hollow structure, and magnet 4 is arranged in knob body 1, such magnet 4 can not expose, and ensure that the attractive in appearance of adjusting knob.General, magnet 4 is permanent magnet, and such as neodymium nickel cobalt permanent magnet etc. are made.Base 2 and the guidance panel of adjusting knob can be unitary design, unified to ensure the good looking appearance of product, the now fixed sturcture of base 2, circuit part is all arranged on the inside of the electrical equipment such as electromagnetic oven, because what the Hall element 3 in base 2 sensed is changes of magnetic field, thus can be contactless setting between the base 2 of adjusting knob and knob body 1, base 2 such as can be made to be hidden under guidance panel, knob body 1 is positioned on guidance panel, and base 2 is shorter with magnet 4 vertical range in knob body 1, the Hall element 3 of such base 2 still can experience the changes of magnetic field of magnet 4, and the base 2 of adjusting knob is arranged under enclosed guidance panel, thus with guidance panel above isolate, enhance its airtight waterproof performance.In order to ensure induction precision, Hall element 3 generally selects linear hall sensor.
When the magnet 4 in knob body 1 rotates along with knob body 1, along with the change of magnet 4 position, the magnetic field intensity that the Hall element 3 relative with magnet 4 senses is along with changing, and export and the voltage that is directly proportional of magnetic field intensity, then namely obtain the anglec of rotation corresponding to Hall element 3 current voltage value and position by built-in algorithm.
Concrete, in order to ensure the induction Detection results of Hall element 3, the magnet 4 that knob body 1 is arranged can be multiple, such as, the quantity of magnet 4 can be made to be N number of, this N number of magnet radially arranges around the axis of knob body 1, and the magnetic pole outside N number of magnet is circumferentially same, the polarity of adjacent outer magnetic pole is contrary, wherein, N is even number, and N >=2.After knob body 1 arranges multiple magnet 4, no matter adjusting knob rotates to arbitrarily angled, and the Hall element 3 on base 2 all can sense the change of magnetic field intensity.Further, in order to ensure magnet produce the consistance in magnetic field, the quantity of magnet 4 is even number, and magnet 4 is symmetrically around knob body 1 axis spread configuration.
After obtaining the magnitude of voltage of Hall element 3, the anglec of rotation corresponding in order to adjusted knob and sense of rotation, Hall element 3 sends voltage signal to control module 5, control module 5 is for obtaining knob body 1 relative to the anglec of rotation of base 2 and sense of rotation according to the voltage signal of Hall element 3, thus the gear carrying out adjusting knob regulates.
In the present embodiment, adjusting knob comprises knob body, base, Hall element and magnet, knob body can rotate relative to base around its own rotation axis line, magnet is arranged in knob body, Hall element is arranged on base, when knob body band moving magnet produces the rotation relative with Hall element, the voltage of Hall element changes with the change in location of magnet, and control module obtains knob body relative to the anglec of rotation of base and sense of rotation according to the voltage signal of Hall element again.The fine adjustment of the many gears of adjusting knob can be realized like this.
Fig. 2 is the structural representation of the adjusting knob that the utility model embodiment two provides.The present embodiment is 4 for the quantity of magnet 4 in knob body 1, describes concrete structure and the composition of adjusting knob in detail.As shown in Figure 2, the adjusting knob that the present embodiment provides comprises knob body 1, base 2, Hall element 3, magnet 4 and control module 5 (not shown) equally.Wherein, magnet 4 quantity is 4, and 4 magnet radially arrange around the axis of knob body 1, and the magnetic pole outside all magnet 4 is all positioned at first circumferentially, and the polarity of adjacent outer magnetic pole is contrary.
Concrete, 4 magnet 4 can radially be arranged around the axis of knob body 1, now 4 magnet 4 are arranged in cruciform, an angle of 90 degrees is become between adjacent magnets, and the polarity of adjacent magnets magnetic pole is contrary, such as, outside 4 magnet, magnetic pole is N pole, S pole, N pole and the arrangement of S pole along clockwise direction successively.When the quantity of magnet 4 is 4, no matter what angle is knob body 1 rotate to, and the Hall element 3 on base 2 all can be positioned between two adjacent magnet, this ensure that the Detection results of Hall element 3.
Further, big angle rotary is carried out at adjusting knob, such as, when being 360 degree of rotations, the angle that the magnitude of voltage of Hall element 3 and current knob body 1 rotate through possibly cannot keep one-to-one relationship, now, in order to the sense of rotation of angle that adjusting knob is threaded through and adjusting knob still can be detected, two Hall elements can be utilized to carry out the measurement of magnetic field intensity simultaneously, and learn the sense of rotation of adjusting knob further according to the variation tendency of the magnetic field intensity measured.Wherein, Hall element 3 comprises the first Hall element 31 and the second Hall element 32, first linear hall sensing 31 device and the second linear Hall 32 sensor are all positioned at second circumferentially, the line at the center of the first Hall element 31 and the second circumference is the first line, the line at the center of the second Hall element 32 and the second circumference is the second line, and the angle angle that the first line and the second line are formed is less than the angle in magnet 4 between adjacent magnets.Under normal circumstances, the center of the second circumference is on the axis of knob body 1, and namely the center of the first circumference coincides with the second circle center projection in the axial direction.
As from the foregoing, the base 2 of adjusting knob includes two same Hall elements 31 and 32, and these two Hall elements are on the diverse location of the second circumference.Like this when knob body 1 rotates, the first Hall element 31 and the magnetic field intensity detected by the second Hall element 32 and variation tendency all different, and alternate position spike between its difference with two Hall elements is relevant.General, for ease of carrying out follow-up angle calculation, the angle angle that first line and the second line are formed can be the half of adjacent magnets institute angulation in knob body 1, and such as, when the quantity of the magnet 4 in knob body 1 is N number of, the first angle should be 180/N degree.
In the present embodiment, because the quantity of the magnet 4 in knob body 1 is 4, the angle formed between the first thus corresponding line and the second line can be 180/4, namely 45 degree.Like this when the first Hall element 31 and magnet 4 pole coincide in knob body 1, namely time in 0 degree of angle, second Hall element 32 is in and the adjacent two equidistant positions of magnet, magnetic field intensity now residing for the second Hall element 32 is zero, the output voltage of the second Hall element 32 is the half of supply voltage, is now midpoint potential.When the S pole of magnet 4 is gradually near Hall element 3, the output voltage of Hall element 3 increases to maximal value gradually by midpoint potential; When N pole is gradually near Hall element 3, output voltage is reduced to minimum value gradually.The angle so no matter knob body 1 carries out rotating is how many, now the first Hall element 31 and the magnitude of voltage detected by the second Hall element 32 all can keep strict one-to-one relationship with the anglec of rotation now, namely by the magnitude of voltage that the first Hall element 31 and the second Hall element 32 record jointly, the angle that knob body 1 rotates through can uniquely be determined.
Because the magnetic field intensity detected by the Hall element of diverse location is different, thus the anglec of rotation of corresponding voltage value size to knob body 1 of the first Hall element 31 and the second Hall element 32 can be relied on to calculate, and extrapolate by the magnitude of voltage variation tendency of the first Hall element 31 and the second Hall element 32 direction that adjusting knob carries out rotating.Concrete, Fig. 3 is the change in voltage schematic diagram of knob body that the utility model embodiment two provides Hall element when being rotated counterclockwise.Fig. 4 is the change in voltage schematic diagram of knob body that the utility model embodiment two provides Hall element when turning clockwise.As shown in Figure 3 and Figure 4, the output voltage curve of what A represented is the first Hall element 31, B represents the output voltage curve of the second Hall element 32, when the output voltage curve of the first Hall element 31 is greater than midpoint potential, and be in and diminish in process gradually, if the voltage that the second Hall element 32 that now label is B exports is greater than midpoint potential, and become large gradually, then can judge that knob body 1 is rotated counterclockwise; And if the voltage that the second Hall element 32 exports is less than midpoint potential, and diminished gradually, then knob body 1 is for turning clockwise.The concrete anglec of rotation of knob body 1 can be obtained by the concrete magnitude of voltage measured by the first Hall element 31 and the second Hall element 32.
Concrete, maximum in order to ensure the magnetic field intensity detected by Hall element 3, the equal diameters of the first circumference and the second circumference should be made.Now Hall element 3 is positioned at outside magnet 4 immediately below magnetic pole, and the magnetic field intensity sensed is the strongest, and thus Detection results is also best.
After obtaining the magnitude of voltage of Hall element 3, the anglec of rotation corresponding in order to adjusted knob and sense of rotation, adjusting knob also includes control module 5, and control module 5 is for obtaining knob body 1 relative to the anglec of rotation of base 2 and sense of rotation according to the voltage signal of Hall element 3.
Concrete, control module 5 can be connected with Hall element 3 by analog-to-digital converting module etc., and samples to the magnitude of voltage that Hall element 3 senses, to obtain digital signal samples value, and according to subsequent calculations.Fig. 5 is the workflow schematic diagram of the control module that the utility model embodiment two provides.As shown in Figure 5, control module 5, when specifically carrying out sampling and follow-up judgement to the magnitude of voltage of Hall element, specifically can comprise the steps:
S501, control module obtain the voltage of the first Hall element and the second Hall element;
The voltage that the voltage of this acquisition and last time obtain compares by S502, control module, obtains voltage swing and the change in voltage trend of the first Hall element and the second Hall element respectively;
S503, change in voltage trend according to the first Hall element and the second Hall element, judge the sense of rotation that adjusting knob is current;
S504, voltage swing according to the first Hall element and the second Hall element, judge the anglec of rotation that adjusting knob is current;
S505, carry out gear adjustment according to the current sense of rotation of adjusting knob and the anglec of rotation.
After above-mentioned steps, control module can obtain the current rotary angle position of adjusting knob and sense of rotation, thus carries out the gear adjustments such as follow-up power, pattern.
It should be noted that, above-mentioned process step is only and illustrates that the adjusting knob of the present embodiment knows adjusting knob current angle position and sense of rotation according to the signal of Hall element 3, and carry out the detailed process of follow-up gear adjustment, but not be limited, other similar approach also can be used in there is said structure adjusting knob among, repeat no more herein.
In the present embodiment, adjusting knob comprises knob body, base, Hall element and magnet, knob body can rotate relative to base around its own rotation axis line, magnet is arranged in knob body, Hall element is arranged on base, when knob body band moving magnet produces the rotation relative with Hall element, the voltage of Hall element changes with the change in location of magnet, and control module obtains knob body relative to the anglec of rotation of base and sense of rotation according to the voltage signal of Hall element again.In addition, Hall element comprises the first Hall element and the second Hall element, first Hall element and the second Hall element are all positioned at circumferentially same, the center of Hall element place circumference is on the axis of knob body, the line of the first Hall element and Hall element place circle center is the first line, the line of the second Hall element and Hall element place circle center is the second line, the angle that first line and the second line are formed is the first angle, and the first angle is less than the angle between adjacent magnets.Like this by the different magnitudes of voltage detected by multiple Hall element, while knowing the current accurate gear of adjusting knob, also can detect the sense of rotation of adjusting knob, achieve further fine adjustment.
On the other hand, the utility model also provides a kind of electric equipment products, and these electric equipment products have guidance panel and adjusting knob as above.Electric equipment products can be electromagnetic oven, and have the household electrical appliance etc. of similar structures.Wherein, knob body is arranged at the guidance panel side of electric equipment products, and base is arranged on the opposite side of guidance panel.Wherein, the structure of adjusting knob, function and effect, see the description in above-described embodiment, repeat no more herein.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (10)
1. an adjusting knob, it is characterized in that, comprise knob body, base, Hall element, magnet and control module, described knob body can rotate relative to described base around its own rotation axis line, described magnet is arranged in described knob body, described Hall element is arranged on described base, when described knob body drives described magnet to produce the rotation relative with Hall element, the voltage of described Hall element changes with the change in location of described magnet, described control module and the electrical connection of described Hall element, described control module is used for obtaining described knob body relative to the anglec of rotation of described base and sense of rotation according to the voltage of described Hall element.
2. adjusting knob according to claim 1, it is characterized in that, described magnet is N number of, described N number of magnet radially arranges around the axis of described knob body, magnetic pole outside described N number of magnet is all positioned at first circumferentially, the polarity of adjacent outer magnetic pole is contrary, and wherein N is even number, N >=2.
3. adjusting knob according to claim 2, is characterized in that, outside described N number of magnet, the spacing of magnetic pole is equal.
4. adjusting knob according to claim 3, it is characterized in that, described Hall element comprises the first Hall element and the second Hall element, described first Hall element and described second Hall element are all positioned at second circumferentially, the line at the center of described first Hall element and described second circumference is the first line, the line of described second Hall element and described second circle center is the second line, and the angle of the angle that described first line and described second line are formed is less than the angle between described adjacent magnets.
5. adjusting knob according to claim 4, is characterized in that, the center of described second circumference is on the axis of described knob body.
6. the adjusting knob according to claim 4 or 5, is characterized in that, the angle of the angle that described first line and described second line are formed is 180/N degree.
7. adjusting knob according to claim 6, is characterized in that, described magnet is 4, corresponding, the angle of the angle that described first line and described second line are formed is 45 degree.
8. the adjusting knob according to claim 4 or 5, is characterized in that, described first circumference is equal with described second circle diameter.
9. the adjusting knob according to any one of claim 1-5, is characterized in that, described magnet is permanent magnet, and described Hall element is linear hall sensor.
10. electric equipment products, is characterized in that, described electric equipment products have guidance panel and the adjusting knob as described in any one of claim 1-9, and described knob body is arranged at described guidance panel side, and described base is arranged on described guidance panel opposite side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520507697.1U CN204731676U (en) | 2015-07-13 | 2015-07-13 | Adjusting knob and electric appliance product |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520507697.1U CN204731676U (en) | 2015-07-13 | 2015-07-13 | Adjusting knob and electric appliance product |
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| CN204731676U true CN204731676U (en) | 2015-10-28 |
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| CN105351976A (en) * | 2015-12-09 | 2016-02-24 | 誉兴世纪（北京）科技有限公司 | Intelligent cooking bench switch knob and method for measuring opening degree of cooking bench switch |
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| CN107448996A (en) * | 2016-05-31 | 2017-12-08 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic Heating cooking system and its PCU Power Conditioning Unit |
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