CN110905846B - Power supply box and electric fan with same - Google Patents
Power supply box and electric fan with same Download PDFInfo
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- CN110905846B CN110905846B CN201911260637.3A CN201911260637A CN110905846B CN 110905846 B CN110905846 B CN 110905846B CN 201911260637 A CN201911260637 A CN 201911260637A CN 110905846 B CN110905846 B CN 110905846B
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- 238000001514 detection method Methods 0.000 claims abstract description 88
- 108091026890 Coding region Proteins 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 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 3
- 238000000034 method Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- 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 case body; the upper cover is rotatably covered on the box body, the electrode module is arranged in the mounting cavity, the electrode module comprises a detection electrode, the detection electrode comprises a plurality of detection sheets, the periphery side of the outer ring electrode is divided into a plurality of coding areas which are sequentially arranged, and the coding areas are sequentially coded according to the number of preset coding digits n in a multi-system coding mode so as to arrange 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 way so as to generate a pulse coding signal for detecting the position of the machine head when the upper cover rotates. The invention solves the problems of complex structure, high overall processing and manufacturing cost and poor economy of the electric fan with 360-degree rotating machine head in the prior art, which is generally realized by using the conducting ring to supply power to the machine head to control the rotating angle of the electric fan and simultaneously using the specific angle detection sensor to monitor the position of the machine head in real time.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a structural improvement of an electric fan.
Background
The rotating wind sweeping angle of the machine head of the electric fan which is common in the market is fixed, and the machine head is limited on the rotating path of the machine head, so that the machine head can rotate left and right in a set angle range.
In order to improve the practicality of electric fan, make it have more wide-angle sweep the wind face, some electric fans of prior art can realize 360 degrees rotations and sweep wind, and this kind of electric fan's structure is complicated, uses the conducting ring to supply power to the aircraft nose in order to control its turned angle generally, uses specific angle to detect the position real time monitoring of sensor to the aircraft nose simultaneously, just so promoted the whole manufacturing cost of this kind of electric fan greatly, unfavorable for the promotion of economic nature.
Disclosure of Invention
The invention mainly aims to provide a power supply box and an electric fan with the power supply box, so as to solve the problems that the electric fan with a 360-degree rotating machine head in the prior art is complex in structure, a conducting ring is generally used for supplying power to the machine head to control the rotating angle of the machine head, and meanwhile, a specific angle detection sensor is used for monitoring the position of the machine head in real time, so that the whole machining 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 box of an electric fan for controlling rotation of a head and detecting a position of the head, the power box comprising: the upper cover is rotatably covered on the box body and is used for being connected with the machine head, and the upper cover and the box body enclose an installation cavity; the electrode module is arranged in the mounting 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 periphery side of the outer ring electrode is divided into a plurality of coding areas which are sequentially arranged, the detection electrode comprises a plurality of detection pieces, and the number of the preset coding digits n is sequentially coded in each coding area through a binary coding mode so as to arrange the detection pieces; the upper cover is provided with an electrode brush protruding towards the inside of the mounting cavity, the electrode brush comprises a detection electrode brush, and the detection electrode brush is used for being matched with the detection electrode in an electric contact mode so as to generate a pulse coding signal for detecting the position of the machine head when the upper cover rotates.
Further, the coding region is divided into n sub-coding regions, and each sub-coding region selects whether to set a detection slice according to the corresponding coding bit digital information.
Further, when the coded bit digital information of the sub coding region is 1, a detection slice is set, and when the coded bit digital information of the sub coding region is 0, no detection slice is set.
Further, when the coded bit digital information of the sub coding region is 0, the detection piece is set, and when the coded bit digital information of the sub coding region is 1, the detection piece is not set.
Further, the coding regions are sequentially coded in a multi-system coding mode, wherein the multi-system is M-system, the number of the plurality of coding regions is N, and the number of the coding regions N and the number of the sub-coding regions N meet the relation: m is M n ≥N。
Further, the number of coding regions is 48, and the number of sub-coding regions is 6.
Further, the inner ring electrode, the outer ring electrode and the detection piece are copper sheets.
Further, the outer ring electrode is located on the outer peripheral side of the inner ring electrode, and the plurality of detection pieces are connected with the periphery of the outer ring electrode, which is far away from the inner ring electrode, so as to be distributed radially.
Further, the inner ring electrode and the outer ring electrode are respectively connected with a positive electrode and a negative electrode of the power supply, the electrode brush further comprises a positive electrode brush and a negative electrode brush, the positive electrode brush is in electric contact fit with the inner ring electrode, and the negative electrode brush is in electric contact fit with the outer ring electrode.
According to another aspect of the invention, there is provided an electric fan, comprising a base, a power supply box and a machine head, wherein the power supply box is the power supply box, a box body of the power supply box is connected with the base, an upper cover of the power supply box is connected with the machine head, the electric fan further comprises a controller, and the controller is arranged on the machine head and used for receiving and analyzing pulse coding signals sent by the power supply box so as to determine the rotation angle position of the machine head.
By adopting 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 machine head of the electric fan, but also has the function of detecting the position of the machine head, thereby reducing the component composition of the electric fan, improving the integration degree of the electric fan, simplifying the integral structure of the electric fan and being beneficial to the miniaturization design and the economical improvement of the electric fan.
Specifically, through carrying out structural optimization to the electrode module of power supply box, utilize inner ring electrode and outer loop electrode to realize the power supply to the aircraft nose, and more importantly, utilize the detection electrode brush that is connected with outer loop electrode to cooperate in the upper cover that sets up of power supply box, produce the pulse code signal that is used for detecting the aircraft nose position. The detection electrode comprises a plurality of detection sheets, and the detection sheets are arranged in a plurality of coding areas which are sequentially arranged on the outer peripheral side of the outer ring electrode, wherein the detection sheets are arranged by coding according to the number of preset coding digits n in a multi-system coding mode; like this, when aircraft nose and upper cover synchronous rotation's in-process, detect the electrode brush and sweep the detection electrode, and produce pulse code signal, and then follow-up through decoding pulse code signal just can confirm the corresponding position of aircraft nose, not only realized the detection to the aircraft nose position steadily, be favorable to controlling the rotation angle of aircraft nose moreover, promote electric fan's practicality and economic nature.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows a schematic structure of a power supply box of an electric fan according to an alternative embodiment of the present invention;
fig. 2 shows a schematic structural view of an inner side view of an upper cover of the power supply box in fig. 1;
fig. 3 is a schematic view showing a structure in which a case body and an upper cover of the power supply case of fig. 1 are in an exploded state, in which a relative positional relationship of an electrode brush provided on the upper cover and an electrode module mounted in a mounting chamber of the power supply case is shown;
fig. 4 is a schematic view showing an arrangement of an electrode module according to an embodiment of the present application, in which a detection electrode of the electrode module is omitted, and a state in which the outer ring electrode is arranged in a partitioned manner in the circumferential direction is shown;
fig. 5 shows a schematic overall arrangement of the electrode module in fig. 4, in which the detection electrode of the electrode module is shown in its entirety;
FIG. 6 shows an enlarged schematic view at C in FIG. 5;
fig. 7 shows a schematic layout of an electrode module according to an embodiment of the present application, omitting a detection electrode of the electrode module, and showing a region partitioning the outer ring electrode circumferentially.
Wherein the above figures include the following reference numerals:
10. a case 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. a detection sheet; 21. an electrode brush; 211. detecting an electrode brush; 212. a positive electrode brush; 213. a negative electrode brush.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the problems of complicated structure, usually using a conductive ring to supply power to the handpiece to control the rotation angle, and simultaneously using a specific angle detection sensor to monitor the position of the handpiece in real time, the invention provides a power supply box and an electric fan, wherein the electric fan comprises a base, a power supply box and the handpiece, the power supply box is the power supply box 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 with the handpiece.
Example 1
As shown in fig. 1 to 6, the power supply box for controlling the rotation of the machine head and detecting the position of the machine head comprises a box body 10, an upper cover 20 and an electrode module 30, wherein the box body 10 is used for being installed with a base, the upper cover 20 is rotatably covered on the box body 10 and is used for being connected with the machine head, 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 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 areas 100 which are sequentially arranged, the detection electrode 33 comprises a plurality of detection pieces 331, and each coding area 100 is sequentially coded according to the number of preset coding digits n through a multilevel coding mode so as to set the detection pieces 331; the upper cover 20 is provided with an electrode brush 21 protruding toward the inside of the mounting chamber 11, and the electrode brush 21 includes a detection electrode brush 211, and the detection electrode brush 211 is used for being in electrical contact fit with the detection electrode 33 to generate a pulse code signal for detecting the position of the handpiece when the upper cover 20 is rotated.
Through carrying out institutional advancement to the power box of electric fan, make the power box not only have the effect to the aircraft nose power supply of electric fan, make it have the function of detecting the position of aircraft nose moreover to reduce the component composition of electric fan, promoted the integrated level of electric fan, simplified the overall structure of electric fan, be favorable to the promotion of miniaturized design and economic nature of electric fan.
Specifically, by optimizing the structure of the electrode module 30 of the power supply box, the power supply to the handpiece is realized by the inner ring electrode 31 and the outer ring electrode 32, and more importantly, the pulse code signal for detecting the position of the handpiece is generated by the detection electrode brush 211 provided on the upper cover 20 of the power supply box in cooperation with the detection electrode 33 connected with the outer ring electrode 32. Since the detection electrode 33 includes a plurality of detection pieces 331, and the detection pieces 331 are disposed in the plurality of coding regions 100 sequentially arranged on the outer peripheral side of the outer ring electrode 32, the detection pieces 331 are disposed by coding in a multilevel coding manner in accordance with the number of the preset coding digits n; thus, 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 coding signal, and then the corresponding position of the machine head can be determined by decoding the pulse coding signal, so that the detection of the machine head position is stably realized, the control of the rotation angle of the machine head is facilitated, and the practicability and the economy of the electric fan are improved.
It should be noted that the electric fan further includes a controller, and the controller is disposed on the machine head and is configured to receive and analyze the pulse code signal sent by the power supply box, so as to determine the rotation angle position of the machine head. Of course, the controller of the present application is not limited to such a setting position, and it can be set at any position of the electric fan according to its own structural size.
In a manner in which the detection pieces 331 are provided in the plurality of code regions 100 arranged in this order 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 corresponding code bit digital information.
In this embodiment, 360 degrees of the outer circumference side of the outer ring electrode 32 are divided into N coding regions 100, each coding region 100 is further divided into N sub-coding regions 101, the number N of the sub-coding regions 101 corresponds to a preset number N of coding bits, and each sub-coding region 101 is provided with a detection chip 331 and is determined by using a multi-system coding method.
In the present embodiment, as shown in fig. 6, when the encoded bit digital information of the sub-encoded region 101 is 1, the detection piece 331 is provided, and when the encoded bit digital information of the sub-encoded region 101 is 0, the detection piece 331 is not provided.
Preferably, the N encoded regions 100 are sequentially subjected to the multi-encoding setting detection pieces 331 in a counterclockwise order.
In the illustrated embodiment, as shown in fig. 4, 360 degrees on the outer peripheral side 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 degrees, as shown in fig. 5 and 6, each coding region 100 is divided into 6 sub-coding regions 101, so that the central angle B of each sub-coding region 101 is 1.25 degrees, and the circumferential angles are finely divided, which is very beneficial to precisely controlling the rotation angle of the machine head, and further the machine head can be controlled to timely perform head shaking and wind sweeping according to the angle set by the user.
That is, the number N of the encoding regions 100 determines the accuracy of the head position detection, and the size N may be selected according to the stepping angle of the stepping motor.
Optionally, the coding regions are sequentially coded by a multi-system coding mode, wherein the multi-system is M-system, the number of the plurality of 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 relation: m is M n And (5) not less than N. Thus, the number of the plurality of encoding regions 100 is satisfied.
In a preferred embodiment of the present application, the coding regions are sequentially coded by binary coding.
As shown in fig. 6, in the case where two adjacent encoding regions 100 are binary-encoded in this embodiment, only the first encoding region 100 and the last encoding region 100 are taken as an example, and when n=1, the binary encoding corresponding to the encoding region 100 is 000001, so that the numbers corresponding to the first 5 sub-encoding regions 101 are 0 in the clockwise direction in the encoding region 100, none of the 5 sub-encoding regions 101 is provided with a detection slice 331, the number corresponding to the 6 th sub-encoding region 101 is 1, and the detection slice 331 is provided; in the counterclockwise direction, n=48, the binary code corresponding to the coding region 100 is 110000, so that in the clockwise direction in this coding region 100, the number corresponding to the first two sub-coding regions 101 is 1, the two sub-coding regions 101 are respectively provided with one detection chip 331, and the numbers corresponding to the 3 rd to 6 th sub-coding regions 101 are 0, and no detection chip 331 is provided.
Note that, if the thickness direction of the detection pieces 331 is the same as the width of the sub-encoded regions 101 and the detection pieces 331 are provided in two adjacent sub-encoded 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, not shown, of the present application, the detection piece 331 is provided when the encoded bit digital information of the sub-encoding region 101 is 0, and the detection piece 331 is not provided when the encoded bit digital information of the sub-encoding region 101 is 1. This method is contrary to the encoding method described above.
In order to ensure the power supply effect of the power supply box to the handpiece and the intensity of the pulse code signal, the inner ring electrode 31, the outer ring electrode 32 and the detection piece 331 are optionally copper sheets.
As shown in fig. 3 to 5, the outer ring electrode 32 is located on the outer peripheral side of the inner ring electrode 31, and a plurality of detection pieces 331 are connected to the periphery of the outer ring electrode 32 facing away from the inner ring electrode 31 so as to be radially distributed.
It should be noted that, the inner ring electrode 31 and the outer ring electrode 32 are respectively connected with a positive power supply electrode and a negative power supply electrode, 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, so as to realize power supply 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 each in the shape of circular ring plates concentrically arranged.
It should be noted that, the box body of the power supply box can be fixedly connected with the machine head, and the upper cover of the power supply box can be connected with the base, so long as the upper cover and the box body can rotate relatively.
Example two
As shown in fig. 7, this embodiment differs 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 arranged concentrically.
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 in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative 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 in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (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 in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated 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 the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. 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 box of an electric fan for controlling rotation of a handpiece and detecting a position of the handpiece, the power box comprising:
the device comprises a box body (10) and an upper cover (20), wherein the box body (10) is used for being installed with a base, the upper cover (20) is rotatably covered on the box body (10) and is used for being connected with a machine head, and an installation cavity (11) is formed by the upper cover (20) and the box body (10);
the electrode module (30), 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), wherein the detection electrode (33) is connected with the inner ring electrode (31) or the outer ring electrode (32), the outer circumference side of the outer ring electrode (32) is divided into a plurality of coding areas (100) which are sequentially arranged, the detection electrode (33) comprises a plurality of detection pieces (331), and the coding areas (100) are sequentially coded according to the number of preset coding digits n in a multilevel coding mode so as 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 matched with the detection electrode (33) in an electric contact mode so as to generate a pulse coding signal for detecting the position of the machine head when the upper cover (20) rotates.
2. The power box according to claim 1, characterized in that the coding area (100) is divided into n sub-coding areas (101), each sub-coding area (101) selecting whether to set the detection piece (331) according to its corresponding coded bit digital information.
3. The power supply box according to claim 2, characterized in that the detection piece (331) is provided when the coded bit digital information of the sub-coding area (101) is 1, and the detection piece (331) is not provided when the coded bit digital information of the sub-coding area (101) is 0.
4. The power supply box according to claim 2, characterized in that the detection piece (331) is provided when the coded bit digital information of the sub-coding area (101) is 0, and the detection piece (331) is not provided when the coded bit digital information of the sub-coding area (101) is 1.
5. The power supply box according to claim 2, wherein the coding regions (100) are sequentially coded by a multilevel coding mode, the multilevel is M, the number of the plurality of 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 a relation: m is M n ≥N。
6. The power box according to claim 5, characterized in that the number of coding regions (100) is 48 and the number of sub-coding regions (101) is 6.
7. The power supply box according to claim 1, characterized in that the inner ring electrode (31), the outer ring electrode (32) and the detection piece (331) are copper pieces.
8. The power supply box according to claim 1, characterized in that the outer ring electrode (32) is located on the outer peripheral side of the inner ring electrode (31), and the plurality of detection pieces (331) are connected with the 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 respectively connected with a positive power supply electrode and a negative power supply electrode, 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 by comprising a base, a power supply box and a machine head, wherein the power supply box is the power supply box according to any one of claims 1 to 9, a box body (10) of the power supply box is connected with the base, an upper cover (20) of the power supply box is connected with the machine head, and the electric fan further comprises a controller, wherein the controller is arranged on the machine head and is used for receiving and analyzing pulse coding signals sent by the power supply box so as to determine the rotation angle position of the machine head.
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| Application Number | Priority Date | Filing Date | Title |
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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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| Application Number | Priority Date | Filing Date | Title |
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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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| 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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2019
- 2019-12-10 CN CN201911260637.3A patent/CN110905846B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN110905846A (en) | 2020-03-24 |
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