CN110905846A - Power supply box and electric fan with power supply box - Google Patents
Power supply box and electric fan with power supply box Download PDFInfo
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- CN110905846A CN110905846A CN201911260637.3A CN201911260637A CN110905846A CN 110905846 A CN110905846 A CN 110905846A CN 201911260637 A CN201911260637 A CN 201911260637A CN 110905846 A CN110905846 A CN 110905846A
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- 108091026890 Coding region Proteins 0.000 claims abstract description 34
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 4
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/10—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provisions for automatically changing direction of output air
- F04D25/105—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provisions for automatically changing direction of output air by changing rotor axis direction, e.g. oscillating fans
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention provides a power supply box and an electric fan, wherein the power supply box comprises: a box body; the upper cover is rotatably covered on the box body, the electrode module is arranged in the mounting cavity and comprises a detection electrode, the detection electrode comprises a plurality of detection sheets, the outer peripheral side of the outer ring electrode is divided into a plurality of coding regions which are sequentially arranged, and each coding region is sequentially coded according to the number of preset coding bits n in a multilevel coding mode so as to be provided with the detection sheets; the electrode brush on the upper cover comprises a detection electrode brush which is matched with the detection electrode in an electric contact mode so as to generate a pulse code signal for detecting the position of the handpiece when the upper cover rotates. The invention solves the problems that the electric fan with the 360-degree rotating machine head in the prior art is complex in structure, a conductive ring is usually used for supplying power to the machine head so as to control the rotating angle of the electric fan, and meanwhile, a specific angle detection sensor is used for monitoring the position of the machine head in real time, so that the whole processing and manufacturing cost is high, and the economical efficiency is poor.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an improved structure of an electric fan.
Background
The machine head of a common electric fan on the market rotates to sweep the wind at a fixed angle, and the machine head is limited on the rotating path of the machine head, so that the machine head rotates left and right within a set angle range to sweep the wind.
In order to improve the practicability of the electric fan and enable the electric fan to have a wider-angle wind sweeping surface, the electric fan in the prior art can rotate 360 degrees to sweep wind, the electric fan is complex in structure, a conductive ring is usually used for supplying power to the machine head to control the rotating angle of the electric fan, and meanwhile, a specific angle detection sensor is used for monitoring the position of the machine head in real time, so that the overall processing and manufacturing cost of the electric fan is greatly improved, and the electric fan is not beneficial to improving the economy.
Disclosure of Invention
The invention mainly aims to provide a power supply box and an electric fan with the power supply box, and aims to solve the problems that in the prior art, the electric fan with a 360-degree rotating machine head is complex in structure, a conductive ring is usually used for supplying power to the machine head to control the rotating angle of the electric fan, and meanwhile, a specific angle detection sensor is used for monitoring the position of the machine head in real time, so that the overall processing and manufacturing cost is high, and the economical efficiency is poor.
In order to achieve the above object, according to one aspect of the present invention, there is provided a power supply box of an electric fan for controlling rotation of a head and detecting a position of the head, the power supply box comprising: the box body is used for being mounted with the base, the upper cover can be rotatably covered on the box body and is used for being connected with the machine head, and the upper cover and the box body form a mounting cavity in a surrounding mode; the electrode module is arranged in the installation cavity and comprises an inner ring electrode, an outer ring electrode and a detection electrode, wherein the detection electrode is connected with the outer ring electrode, the outer peripheral side of the outer ring electrode is divided into a plurality of coding regions which are sequentially arranged, the detection electrode comprises a plurality of detection sheets, and coding is sequentially carried out on the coding regions according to the number of preset coding bits n in a binary coding mode so as to arrange the detection sheets; be provided with the protruding electrode brush in the installation cavity towards on covering, the electrode brush includes the detection electrode brush, and the detection electrode brush is used for cooperating with the detection electrode electrical contact to produce the pulse code signal who is used for detecting the aircraft nose position when the upper cover rotates.
Furthermore, the coding area is divided into n sub-coding areas, and each sub-coding area selects whether to set a detection piece according to the corresponding coding bit digital information.
Further, when the coded bit number information of the sub-coded region is 1, the detection slice is set, and when the coded bit number information of the sub-coded region is 0, the detection slice is not set.
Further, when the coded bit number information of the sub-coded region is 0, the detection slice is set, and when the coded bit number information of the sub-coded region is 1, the detection slice is not set.
Furthermore, the coding regions are sequentially coded in a multilevel coding mode, the multilevel is an M-level, the number of the coding regions is N, and the number N of the coding regions and the number N of the sub-coding regions satisfy the relation: mn≥N。
Further, the number of the coding regions is 48, and the number of the sub-coding regions is 6.
Furthermore, the inner ring electrode, the outer ring electrode and the detection sheet are all copper sheets.
Furthermore, the outer ring electrode is positioned on the outer periphery side of the inner ring electrode, and the plurality of detection sheets are connected with the periphery of the outer ring electrode, which is deviated from the inner ring electrode, so as to be distributed in a radial shape.
Furthermore, the inner ring electrode and the outer ring electrode are respectively connected with a power supply anode and a power supply cathode, the electrode brush further comprises an anode electrode brush and a cathode electrode brush, the anode electrode brush is in electric contact fit with the inner ring electrode, and the cathode electrode brush is in electric contact fit with the outer ring electrode.
According to another aspect of the invention, an electric fan is provided, which comprises a base, a power supply box and a machine head, wherein the power supply box is the power supply box, the box body of the power supply box is connected with the base, the upper cover of the power supply box is connected with the machine head, and the electric fan further comprises a controller, and the controller is arranged on the machine head and used for receiving and analyzing pulse code signals sent by the power supply box so as to determine the rotation angle position of the machine head.
By applying the technical scheme of the invention, the power supply box of the electric fan is structurally improved, so that the power supply box not only has the function of supplying power to the head of the electric fan, but also has the function of detecting the position of the head, thereby reducing the component composition of the electric fan, improving the integration degree of the electric fan, simplifying the overall structure of the electric fan, and being beneficial to the miniaturization design and the improvement of the economy of the electric fan.
Specifically, the power supply to the handpiece is realized by using the inner ring electrode and the outer ring electrode through the structural optimization of the electrode module of the power supply box, and more importantly, a pulse code signal for detecting the position of the handpiece is generated by using the detection electrode connected with the outer ring electrode to be matched with the detection electrode brush arranged on the upper cover of the power supply box. The detection electrode comprises a plurality of detection pieces, and the detection pieces are arranged in a plurality of coding regions which are sequentially arranged on the outer peripheral side of the outer ring electrode in a multi-system coding mode according to the number of preset coding bits n so as to be arranged; like this, when aircraft nose and upper cover synchronous rotation's in-process, the detecting electrode brush sweeps detecting electrode, and produces the pulse code signal, and then follow-up pulse code signal through decoding just can confirm the corresponding position of aircraft nose, has not only realized the detection to the aircraft nose position steadily, is favorable to controlling the turned angle of aircraft nose moreover, promotes the practicality and the economic nature of electric fan.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic configuration of a power supply box of an electric fan according to an alternative embodiment of the present invention;
FIG. 2 is a schematic structural view showing an inside view of an upper cover of the power supply case of FIG. 1;
FIG. 3 is a schematic structural view showing the power supply case of FIG. 1 with the case body and the upper cover in a disassembled state, in which the relative positional relationship between the electrode brush provided on the upper cover and the electrode module mounted in the mounting chamber of the power supply case is shown;
fig. 4 is a schematic view showing the arrangement of an electrode module according to the first embodiment of the present application, in which the detection electrodes of the electrode module are omitted and the outer ring electrode is arranged in a circumferential direction in a partitioned manner;
FIG. 5 shows a schematic view of the overall arrangement of the electrode module of FIG. 4, with the detection electrodes of the electrode module shown in their entirety;
FIG. 6 shows an enlarged schematic view at C in FIG. 5;
fig. 7 is a schematic diagram showing the arrangement of an electrode module according to the first embodiment of the present application, omitting the detection electrodes of the electrode module, and showing regions partitioning the outer ring electrode in the circumferential direction.
Wherein the figures include the following reference numerals:
10. a box body; 11. a mounting cavity; 20. an upper cover; 30. an electrode module; 31. an inner ring electrode; 32. an outer ring electrode; 100. a coding region; 101. a sub-coding region; 33. a detection electrode; 331. detecting a sheet; 21. an electrode brush; 211. detecting the electrode brush; 212. a positive electrode brush; 213. and a negative electrode brush.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problems that in the prior art, an electric fan with a 360-degree rotating machine head is complex in structure, a conductive ring is generally used for supplying power to the machine head to control the rotating angle of the electric fan, a specific angle detection sensor is used for monitoring the position of the machine head in real time, and the whole processing and manufacturing cost is high and the economical efficiency is poor, the invention provides a power supply box and the electric fan, wherein the electric fan comprises a base, the power supply box and the machine head, the power supply box is the power supply box which is described above and below, as shown in fig. 1 to 3, a box body 10 of the power supply box is connected with the base, and an upper cover 20 of the power supply box is connected.
Example one
As shown in fig. 1 to 6, the power supply box for controlling the rotation of the handpiece and detecting the position of the handpiece includes a box body 10, an upper cover 20 and an electrode module 30, the box body 10 is used for being mounted with a base, the upper cover 20 is rotatably covered on the box body 10, and is used for connecting with the handpiece, the upper cover 20 and the box body 10 enclose a mounting cavity 11, the electrode module 30 is arranged in the mounting cavity 11, the electrode module 30 comprises an inner ring electrode 31, an outer ring electrode 32 and a detection electrode 33, wherein, the detection electrode 33 is connected with the inner ring electrode 31 or the outer ring electrode 32, (in the illustrated embodiment of the present application, the detection electrode 33 is connected with the outer ring electrode 32) the outer circumference side of the outer ring electrode 32 is divided into a plurality of coding regions 100 which are sequentially arranged, the detection electrode 33 includes a plurality of detection pieces 331, and the coding regions 100 are sequentially coded according to the number of the preset coding bits n by a multilevel coding mode to arrange the detection pieces 331; the upper cover 20 is provided with an electrode brush 21 protruding towards the inside of the mounting cavity 11, the electrode brush 21 comprises a detection electrode brush 211, and the detection electrode brush 211 is used for being in electrical contact fit with the detection electrode 33 so as to generate a pulse code signal for detecting the position of the handpiece when the upper cover 20 rotates.
Through carrying out institutional advancement to the power supply box of electric fan, make the power supply box not only have the effect to the aircraft nose power supply of electric fan, make it have the function that detects the position of aircraft nose moreover to reduced the component of electric fan and formed, promoted the degree of integrating of electric fan, simplified the overall structure of electric fan, be favorable to the miniaturized design of electric fan and the promotion of economic nature.
Specifically, by structurally optimizing the electrode module 30 of the power supply box, power supply to the handpiece is achieved by the inner ring electrode 31 and the outer ring electrode 32, and more importantly, a pulse code signal for detecting the position of the handpiece is generated by the detection electrode 33 connected to the outer ring electrode 32 being fitted to the detection electrode brush 211 provided on the upper cover 20 of the power supply box. Since the detection electrode 33 includes the plurality of detection pieces 331, the detection pieces 331 are provided in the plurality of coding regions 100 arranged in sequence on the outer peripheral side of the outer ring electrode 32 in such a manner that the detection pieces 331 are coded by the number of the preset coding bits n in a multilevel coding manner to provide the detection pieces 331; therefore, when the machine head and the upper cover 20 synchronously rotate, the detection electrode brush 211 sweeps the detection electrode 33 to generate a pulse code signal, and then the corresponding position of the machine head can be determined by decoding the pulse code signal subsequently, so that the detection of the position of the machine head is stably realized, the rotation angle of the machine head is favorably controlled, and the practicability and the economy of the electric fan are improved.
The electric fan further comprises a controller, wherein the controller is arranged on the head and used for receiving and analyzing the pulse code signals sent by the power supply box so as to determine the rotating angle position of the head. Of course, the controller of the present application is not limited to such a position, and can be provided at any position of the electric fan according to its own structural size.
In the method of providing the detection piece 331 in the plurality of code regions 100 sequentially arranged on the outer peripheral side of the outer ring electrode 32, specifically, as shown in fig. 4 to 6, the code region 100 is divided into n sub-code regions 101, and each sub-code region 101 selects whether or not to provide the detection piece 331 based on the code bit number information corresponding thereto.
In this embodiment, the outer circumference of the outer ring electrode 32 is divided into N coding regions 100 in 360 degrees, each coding region 100 is divided into N sub-coding regions 101, the number N of the sub-coding regions 101 corresponds to the number N of the preset coding bits, and the detection piece 331 is sufficiently arranged in each sub-coding region 101, and is determined by using a multilevel coding method.
In the present embodiment, as shown in fig. 6, when the coded bit number information of the sub-coded region 101 is 1, the detection piece 331 is set, and when the coded bit number information of the sub-coded region 101 is 0, the detection piece 331 is not set.
Preferably, the multilevel coding setting detection pieces 331 are sequentially performed in a counterclockwise order for the N coding regions 100.
In the illustrated embodiment, as shown in fig. 4, 360 degrees of the outer periphery of the outer ring electrode 32 are divided into 48 coding regions 100, the central angle a of each coding region 100 is 7.5 °, as shown in fig. 5 and 6, each coding region 100 is divided into 6 sub-coding regions 101, and thus the central angle B of each sub-coding region 101 is 1.25 °, so that the circumferential angle is divided and refined, which is very beneficial to accurately controlling the rotation angle of the handpiece, and further, the handpiece can be controlled to shake the head and sweep the wind in time according to the angle set by the user.
That is, the number N of the code regions 100 determines the accuracy of the head position detection, and the size of N can be selected according to the step angle of the stepping motor.
Optionally, the coding regions are sequentially coded by a multilevel coding method, the multilevel is an M-level, the number of the coding regions 100 is N, and the number N of the coding regions 100 and the number N of the sub-coding regions 101 satisfy the following relation: mnIs more than or equal to N. Thus, the requirement of the number of the plurality of coding regions 100 is satisfied.
In the preferred embodiment of the present application, the coding region is sequentially coded by a binary coding method.
As shown in fig. 6, in a manner that two adjacent coding regions 100 of the present embodiment perform binary coding, taking only the first coding region 100 and the last coding region 100 as an example, when N is 1, the binary coding corresponding to the coding region 100 is 000001, so that in the clockwise direction in the coding region 100, the number corresponding to the first 5 sub-coding regions 101 is 0, the 5 sub-coding regions 101 do not have the detection piece 331, the number corresponding to the 6 th sub-coding region 101 is 1, and the detection piece 331 is provided; when N is 48 in the counterclockwise direction, the binary code corresponding to the coding region 100 is 110000, so that the numbers corresponding to the first two sub-coding regions 101 are 1 in the clockwise direction in the coding region 100, one detection slice 331 is respectively disposed in the two sub-coding regions 101, the numbers corresponding to the 3 rd to 6 th sub-coding regions 101 are 0, and the detection slice 331 is not disposed.
Note that the thickness direction of the detection piece 331 is the same as the width of the sub-coding region 101, and if the detection piece 331 is provided in each of two adjacent sub-coding regions 101, the two detection pieces 331 may be two separate detection pieces 331 or may be an integral structure.
Of course, in an alternative embodiment of the present application, which is not shown in the drawing, the detection slice 331 is set when the coded bit number information of the sub-coded region 101 is 0, and the detection slice 331 is not set when the coded bit number information of the sub-coded region 101 is 1. This approach is the reverse of the encoding approach described above.
In order to ensure the power supply effect of the power supply box to the handpiece and the strength of the generated pulse code signal, the inner ring electrode 31, the outer ring electrode 32 and the detection sheet 331 are all copper sheets.
As shown in fig. 3 to 5, the outer ring electrode 32 is located on the outer periphery of the inner ring electrode 31, and the plurality of detection sheets 331 are connected to the periphery of the outer ring electrode 32 away from the inner ring electrode 31 to be distributed radially.
It should be noted that the inner ring electrode 31 and the outer ring electrode 32 are respectively connected to a positive power supply electrode and a negative power supply electrode, the electrode brush 21 further includes a positive electrode brush 212 and a negative electrode brush 213, the positive electrode brush 212 is in electrical contact with and matched with the inner ring electrode 31, and the negative electrode brush 213 is in electrical contact with and matched with the outer ring electrode 32, so as to supply power to the handpiece and ensure stable rotation of the handpiece.
In this embodiment, the inner ring electrode 31 and the outer ring electrode 32 are both in the shape of concentrically arranged circular ring plates.
It should be noted that, the case body may be a power supply case and fixedly connected to the handpiece, and the upper cover is connected to the base, so long as the upper cover and the case body can rotate relatively.
Example two
As shown in fig. 7, this embodiment is different from the first embodiment in that the inner ring electrode 31 and the outer ring electrode 32 are each in the shape of an elliptical ring plate concentrically arranged.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A power supply box for an electric fan for controlling rotation of a head and detecting a position of the head, the power supply box comprising:
the device comprises a box body (10) and an upper cover (20), wherein the box body (10) is used for being mounted with a base, the upper cover (20) can be rotatably covered on the box body (10) and is used for being connected with the machine head, and the upper cover (20) and the box body (10) enclose a mounting cavity (11);
the electrode module (30) is arranged in the installation cavity (11), the electrode module (30) comprises an inner ring electrode (31), an outer ring electrode (32) and a detection electrode (33), the detection electrode (33) is connected with the inner ring electrode (31) or the outer ring electrode (32), the outer peripheral side of the outer ring electrode (32) is divided into a plurality of coding regions (100) which are sequentially arranged, the detection electrode (33) comprises a plurality of detection pieces (331), and coding is sequentially carried out in each coding region (100) according to the number of preset coding bit numbers n in a multilevel coding mode so as to set the detection pieces (331);
the upper cover (20) is provided with an electrode brush (21) protruding towards the interior of the mounting cavity (11), the electrode brush (21) comprises a detection electrode brush (211), and the detection electrode brush (211) is used for being in electrical contact fit with the detection electrode (33) so as to generate a pulse coding signal for detecting the position of the handpiece when the upper cover (20) rotates.
2. The power supply box according to claim 1, wherein the encoded region (100) is divided into n sub-encoded regions (101), and each sub-encoded region (101) selects whether to set the detection piece (331) according to its corresponding encoded bit digital information.
3. The power supply box according to claim 2, wherein the detection piece (331) is set when the coded bit digital information of the sub-coded region (101) is 1, and the detection piece (331) is not set when the coded bit digital information of the sub-coded region (101) is 0.
4. The power supply box according to claim 2, wherein the detection piece (331) is set when the coded bit digital information of the sub-coded region (101) is 0, and the detection piece (331) is not set when the coded bit digital information of the sub-coded region (101) is 1.
5. The power supply box according to claim 2, wherein the coded regions (100) are sequentially coded by a multilevel coding method, the multilevel coding method is an M-level, the number of the coded regions (100) is N, and the number N of the coded regions (100) and the number N of the sub-coded regions (101) satisfy the following relation: mn≥N。
6. The power supply box according to claim 5, characterized in that the number of said coding regions (100) is 48 and the number of said sub-coding regions (101) is 6.
7. The power supply case according to claim 1, wherein the inner ring electrode (31), the outer ring electrode (32), and the detection piece (331) are all copper pieces.
8. The power supply case according to claim 1, wherein the outer ring electrode (32) is located on an outer peripheral side of the inner ring electrode (31), and the plurality of detection pieces (331) are connected to a peripheral edge of the outer ring electrode (32) facing away from the inner ring electrode (31) so as to be radially distributed.
9. The power supply box according to claim 1, wherein the inner ring electrode (31) and the outer ring electrode (32) are connected to a power supply positive electrode and a power supply negative electrode, respectively, the electrode brush (21) further comprises a positive electrode brush (212) and a negative electrode brush (213), the positive electrode brush (212) is in electrical contact fit with the inner ring electrode (31), and the negative electrode brush (213) is in electrical contact fit with the outer ring electrode (32).
10. An electric fan, characterized in that it comprises a base, a power supply box and a head, wherein the power supply box is the power supply box of any claim 1 to 9, the box body (10) of the power supply box is connected with the base, the upper cover (20) of the power supply box is connected with the head, the electric fan further comprises a controller, the controller is arranged on the head and used for receiving and analyzing pulse code signals sent by the power supply box to determine the rotation angle position of the head.
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| CN201911260637.3A CN110905846B (en) | 2019-12-10 | 2019-12-10 | Power supply box and electric fan with same |
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| CN211573847U (en) * | 2019-12-10 | 2020-09-25 | 珠海格力电器股份有限公司 | Power supply box and electric fan with same |
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|---|---|---|---|---|
| CN201059996Y (en) * | 2007-06-29 | 2008-05-14 | 浙江华立利源仪表有限公司 | Stepwise print wheel sensor |
| EP2527796A2 (en) * | 2011-05-27 | 2012-11-28 | Siemens Aktiengesellschaft | Capacitive rotary encoder and method for sensing a rotation angle |
| CN211573847U (en) * | 2019-12-10 | 2020-09-25 | 珠海格力电器股份有限公司 | Power supply box and electric fan with same |
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