WO2017166410A1

WO2017166410A1 - Rotary encoder and household appliance having the same

Info

Publication number: WO2017166410A1
Application number: PCT/CN2016/083362
Authority: WO
Inventors: 车玉明; 郭志新; 方振平; 舒斯龙
Original assignee: 广东美的环境电器制造有限公司
Priority date: 2016-03-30
Filing date: 2016-05-25
Publication date: 2017-10-05

Abstract

A rotary encoder (100) and a household appliance having the same, the rotary encoder (100) comprising: a body (10), the body (10) being provided with a mounting part (11), and the periphery of the mounting part (11) being provided with an inner cavity conducting strip (12) extending along the circumference of the mounting part; a fluctuation plate (20), the fluctuation plate (20) being provided on the mounting part (11) and being able to rotate around the axis of the body (10); and a brush (30), the brush (30) being provided between the body (10) and the fluctuation plate (20) and rotating synchronously with the fluctuation plate (20), and the brush (30) having at least two brush claws (30), the brush claws (30) propped against the inner cavity conducting strip (12).

Description

Rotary encoder and household appliance having the same

Technical field

The present invention relates to the field of home appliance technology, and more particularly to a rotary encoder and a household appliance having the same.

Background technique

Rotary encoders are widely used in various household appliances to generate different loop signals through rotary encoders. The controllers of household appliances issue different motion commands according to different loop signals received, thus The function is effectively regulated.

However, the rotary encoder in the related art has a complicated structure, is inconvenient to operate, and is highly prone to sloshing, so that the controller cannot accurately receive the loop signal, and the function of the household appliance cannot be effectively regulated, and the user's demand cannot be satisfied.

Summary of the invention

The present invention aims to solve at least one of the above technical problems to some extent.

To this end, the present invention proposes a rotary encoder which is simple in structure, low in manufacturing cost and easy to operate.

The present invention also proposes a home appliance having the above-described rotary encoder, which is low in cost, convenient to operate, and can accurately regulate various functions.

A rotary encoder according to an embodiment of the first aspect of the present invention includes: a body having a mounting portion, the outer circumference of the mounting portion being provided with a cavity conductive piece extending along a circumferential direction thereof; a wave plate, a undulating disk is disposed on the mounting portion and rotatable about an axis of the body; a brush disposed between the body and the undulating disk and synchronously rotating with the undulating disk, the brush having at least Two brush jaws that terminate against the inner cavity conductive sheet.

According to the rotary encoder of the embodiment of the invention, the position of the brush of the brush relative to the inner conductive sheet is changed by rotating the undulating disk, so that a different loop signal can be formed between the brush and the inner conductive sheet. The rotary encoder has a simple structure, low manufacturing cost and convenient operation.

In addition, the rotary encoder according to an embodiment of the present invention may further have the following additional technical features:

According to an embodiment of the present invention, the rotary encoder further includes: at least one positioning elastic piece disposed on the body and located at an outer circumference of the inner cavity conductive piece, at least a part of the positioning elastic piece The outer peripheral wall of the undulating disk is stopped.

According to an embodiment of the present invention, the outer peripheral wall of the undulating disk is provided with a plurality of positioning teeth arranged along a circumferential direction thereof, and a positioning groove is defined between two adjacent positioning teeth, and the positioning elastic piece is At least a portion extends into the positioning slot Inside.

According to an embodiment of the present invention, the body is provided with a mounting buckle adapted to mount the positioning elastic piece, and two ends of the positioning elastic piece are respectively mounted on the mounting buckle, and the positioning elastic piece is disposed on the positioning elastic piece. A positioning protrusion adapted to protrude into the positioning groove.

According to an embodiment of the invention, the free end of the positioning protrusion is formed as an arcuate surface, and a smooth transition between the positioning tooth and the positioning groove.

According to an embodiment of the present invention, the mounting portion is formed as a hollow cylinder that protrudes upward along an upper surface of the body, the hollow cylinder is coaxial with the body, and the undulating disk is provided with The hollow cylinder is fitted with an intermediate center hole.

According to an embodiment of the present invention, an upper surface of the body is provided with an annular receiving groove coaxial with the hollow cylinder and having an upper end open, and the shape of the wave disk corresponds to the shape of the annular receiving groove. The inner cavity conductive sheet is disposed on the bottom wall of the annular receiving groove.

According to an embodiment of the present invention, a bottom of the undulating disk is provided with a plurality of positioning posts, and the brush is provided with a positioning hole corresponding to the position of the positioning post, and the positioning post passes through the positioning hole to drive The brush rotates.

According to an embodiment of the invention, the lower surface of the body is provided with a terminal leg adapted to mount the rotary encoder and a body positioning post adapted to position the body.

According to an embodiment of the present invention, the rotary encoder further includes: an upper cover, the upper cover being coupled to the body, the undulating disk and the brush being located between the upper cover and the body.

According to an embodiment of the present invention, an upper surface of the body is provided with a plurality of mounting posts spaced apart along a circumferential direction thereof, and the upper cover is provided with a mounting hole corresponding to the position of the mounting post, the mounting The post is riveted to the mounting hole.

According to an embodiment of the invention, the lower surface of the upper cover is provided with two symmetrically disposed limiting blocks, and each of the limiting blocks is used for respectively limiting the positioning elastic piece.

According to an embodiment of the invention, the rotary encoder further includes a knob connected to the undulating disk and rotatable about an axis of the body to drive the undulating disk to rotate.

According to an embodiment of the present invention, a lower surface of the upper cover is provided with a dustproof skirt extending along a circumferential direction thereof, and the knob is provided with an inverted buckle that is engaged with the dustproof skirt, the knob Engaged with the upper cover and the knob is rotatable relative to the upper cover about an axis of the body.

According to an embodiment of the present invention, the knob is provided with a plurality of driving columns, and the wave plate is provided with a mounting groove adapted to the driving column, and the driving column passes through the upper cover and the The mounting slots are connected to drive the undulating disk to rotate.

According to an embodiment of the present invention, the knob has a radial dimension larger than a radial dimension of the upper cover, and the inner ring of the knob is provided with a plurality of positioning steps uniformly spaced along the circumferential direction thereof, each of which The positioning steps respectively stop against the outer wall surface of the upper cover.

According to an embodiment of the present invention, the rotary encoder further includes: a button connected to the body through the knob, the upper cover, the undulating disk and a brush, the button The axial direction of the body is movable.

According to an embodiment of the present invention, the body is provided with a through hole extending through the axial direction thereof, and a bottom of the through hole is provided with a mounting step, and the button is provided with a buckle corresponding to the mounting step. The button is engaged with the body.

The home appliance according to the embodiment of the second aspect of the present invention includes the rotary encoder of the above embodiment, and since the rotary encoder according to the embodiment of the first aspect of the present invention has the advantages of simple structure, low manufacturing cost, and convenient operation, The home appliance according to the embodiment of the second aspect of the present invention has the advantages of low cost, convenient operation, and ability to accurately regulate various functions.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is an exploded view of a rotary encoder at an angle in accordance with one embodiment of the present invention;

2 is an exploded view of the rotary encoder at another angle in accordance with one embodiment of the present invention;

Figure 3 is a perspective view of a rotary encoder at an angle in accordance with one embodiment of the present invention;

4 is a perspective view of a rotary encoder at another angle in accordance with one embodiment of the present invention;

Figure 5 is a schematic view showing the assembly structure of a undulating disk and a brush according to an embodiment of the present invention;

Figure 6 is a perspective view of the body at an angle in accordance with one embodiment of the present invention;

7 is a schematic view showing an assembly structure of an upper cover, a wave plate, and a body according to an embodiment of the present invention;

Figure 8 is a perspective view of a positioning spring and a wave plate mounted on a body in accordance with one embodiment of the present invention.

Reference mark:

Rotary encoder 100;

The body 10; the mounting portion 11; the inner cavity conductive piece 12; the mounting buckle 13; the annular receiving groove 14; the terminal leg 15; the mounting post 16; the through hole 17; the mounting step 18; the body positioning post 19;

The undulating disk 20; the positioning tooth 21; the positioning groove 22; the middle center hole 23; the positioning post 24; the mounting groove 25;

Brush 30; brush jaw 31; positioning hole 32;

Positioning the elastic piece 40; positioning protrusion 41;

Upper cover 50; mounting hole 51; limiting block 52; dustproof skirt 53;

Knob 60; undercut 61; drive post 62; positioning step 63;

Button 70; buckle 71.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

A rotary encoder 100 in accordance with an embodiment of the present invention will now be described with reference to Figs. The rotary encoder 100 can be widely applied to various household appliances, and the rotational motion of the rotary encoder 100 causes different loop signals to be generated therein, and the control of the home appliance issues different motion commands according to the received different loop signals, thereby Effectively regulate the temperature, pressure or speed of household appliances.

The rotary encoder 100 according to an embodiment of the present invention may generally include a body 10, a undulating disk 20, and a brush 30. As shown in FIGS. 1 and 2, the body 10, the undulating disk 20, and the brush 30 may have a circular structure in which the shape and structure cooperate with each other. It can be understood that the body 10, the undulating disk 20 and the brush 30 can also be square or polygonal structures, which are not described in detail herein.

Specifically, the body 10 is provided with a mounting portion 11 having an outer peripheral portion of the mounting portion 11 provided with a lumen conductive sheet 12 extending in a circumferential direction thereof. The undulating disk 20 is disposed on the mounting portion 11 and rotatable about the axis of the body 10. The brush 30 is disposed between the body 10 and the undulating disk 20 and rotates synchronously with the undulating disk 20. The brush 30 has at least two brushing claws 31, and the brushing claws 31 stops the inner cavity conductive sheet 12. That is, the inner cavity conductive piece 12 is fixed to the mounting portion 11, and the brush 30 is provided at the bottom of the wave disk 20 and is connected to the inner cavity conductive piece 12 by the brush claw 31 to form a loop connection. The rotation of the undulating disk 20 causes the brush 30 to rotate synchronously to change the position at which the brush 31 is connected to the inner cavity conductive piece 12. The change in the position at which the brush jaw 31 is coupled to the lumen conductive sheet 12 causes a different loop signal to be formed between the brush 30 and the lumen conductive sheet 12.

The circumferential direction of the inner cavity conductive piece 12 may be spaced apart from at least two electrical receiving areas and at least one non-electrical receiving area. The rotation of the wave disk 20 may drive the brush 30 to rotate to change the brush 31 and the electrical and non-electrical areas. Contact situation. When the two brush claws 31 are simultaneously engaged with the power receiving area, the brush 30 and the inner cavity conductive piece 12 form a loop connection to form a loop signal, and the circuit signal generated by the controller of the household appliance is output, and the controller receives the loop signal. After the loop signal is judged, a corresponding action command signal is issued, thereby realizing switching of different functions of the home appliance.

For example, when the switch of the household appliance is turned on and off by the rotary encoder, when the inner cavity conductive piece 12 can be provided with two power receiving areas and one non-electrical area, one of the brush claws 31 of the brush 30 can always be connected to the power receiving area. In cooperation, the other brush 31 of the brush 30 is alternately brought into contact with the power receiving zone and the non-powering zone by rotating the undulating disk 20. When the other brush 31 of the brush 30 is in contact with the power receiving area, the two brush jaws 31 and the two power receiving areas together form a loop signal, and at this time, the controller of the household appliance will issue a command signal for turning on the switch. When the other brush 31 of the brush 30 is in contact with the non-electrical area, no loop signal is generated between the brush 30 and the inner cavity conductive piece 12, at which time the controller of the household appliance will issue a command signal to open the switch.

It is to be understood that the above-described embodiments are merely illustrative and not limiting of the invention. The inner conductive sheet 12 can be provided with two or more electrical and non-electrical regions. Accordingly, two or more brushing claws 31 can be provided on the brush 30, so that the inner conductive sheet 12 and the brush 30 can be different. The loop signal, the controller of the household appliance issues different work orders according to different loop signal pairs, thereby realizing the switching of different functions of the household appliance.

The brush 30 and the inner cavity conductive sheet 12 may be made of a metal material having good conductivity, for example, a copper piece or a silver piece. The body 10 and the wave plate 20 may be injection molded of plastic, wherein the inner cavity conductive piece 12 may be The inner cavity conductive sheet 12 is embedded in the body 10 by an injection molding fusion bonding technique. As shown in FIGS. 1 and 2, the body 10 and the undulating disk 20 may be generally formed as a cylinder, and the inner cavity conductive sheet 12 is partially exposed on the upper surface of the body 10, so that the brush 31 of the brush 30 can be combined with the inner cavity conductive piece. 12 contacts. The inner cavity conductive piece 12 extends to the bottom of the body 10 with a terminal leg 15 which is connected to a controller of the home appliance.

According to the rotary encoder 100 of the embodiment of the present invention, the position of the brush 31 of the brush 30 with respect to the inner cavity conductive piece 12 is changed by rotating the undulating disk 20, so that a different shape can be formed between the brush 30 and the inner cavity conductive piece 12. Loop signal. The rotary encoder 100 has a simple structure, low manufacturing cost, and convenient operation.

In some embodiments of the invention, the rotary encoder 100 further includes at least one positioning tab 40. The positioning elastic piece 40 is disposed on the body 10 and located on the outer circumference of the inner cavity conductive piece 12, and at least a part of the positioning elastic piece 40 abuts against the outer peripheral wall of the wave disk 20. As shown in FIG. 8, the undulating disk 20 is provided on the top surface of the body 10 and cooperates with the mounting portion 11, and the inner end of the positioning elastic piece 40 abuts against the outer peripheral wall of the undulating disk 20. Thus, when the undulating disk 20 is rotated. The positioning elastic piece 40 will interfere with the rotation of the wave disk 20. In addition, when the undulating disk 20 is in contact with the positioning elastic piece 40, the undulating disk 20 slides over the positioning elastic piece 40 to emit a slight sound, and the user can obviously feel the rotational position of the undulating disk 20, thereby increasing the user's positioning feeling.

In a specific embodiment of the present invention, as shown in FIG. 1, FIG. 2, FIG. 5 and FIG. 8, the outer peripheral wall of the undulating disk 20 is provided with a plurality of positioning teeth 21 which are circumferentially spaced apart, adjacent to two A positioning groove 22 is defined between the positioning teeth 21, and at least a portion of the positioning elastic piece 40 protrudes into the positioning groove 22. The mounting body 13 is provided with a mounting clip 13 for mounting the positioning elastic piece 40. The two ends of the positioning elastic piece 40 are respectively mounted on the mounting buckle 13. The positioning elastic piece 40 is provided with a positioning protrusion suitable for extending into the positioning groove 22. 41.

The positioning teeth 21 and the positioning grooves 22 are evenly distributed on the outer peripheral wall of the undulating disk 20, so that the rotation process of the undulating disk 20 is always subjected to the same interference resistance, so that the undulating disk 20 can drive the brush 30 to rotate at a constant speed. Since the positioning elastic piece 40 has the elasticity, when the positioning protrusion 41 slides over the positioning tooth 21, the positioning elastic piece 40 will be moderately compressed; when the positioning protrusion 41 slides into the positioning groove 22, the positioning elastic piece 40 returns to the original state. Thereby, it is further ensured that the undulating disk 20 can be smoothly rotated.

Advantageously, the free end of the locating projection 41 is formed as an arcuate surface with a smooth transition between the positioning tooth 21 and the locating groove 22. Thereby, the frictional force when the positioning protrusion 41 is in contact with the positioning tooth 21 and the positioning groove 22 can be reduced, and the wave plate can be further ensured. The 20 can be smoothly rotated and prevented from being worn during use of the undulating disk 20, improving the convenience and stability of the operation of the rotary encoder 100.

In some embodiments, as shown in FIGS. 1, 2, and 6, the mounting portion 11 is formed as a hollow cylinder that protrudes upward along the upper surface of the body 10, the hollow cylinder being coaxial with the body 10, the undulating disk An intermediate center hole 23 adapted to fit the hollow cylinder is provided on the 20 . That is, the hollow cylinder is located in the middle of the upper surface of the body 10, and the undulating disk 20 is rotatably sleeved on the hollow cylinder and can drive the brush 30 to rotate to change the position of the brush 31 relative to the inner cavity conductive sheet 12.

Further, the upper surface of the body 10 is provided with an annular receiving groove 14 which is coaxial with the hollow cylinder and has an open upper end. The shape of the wave disk 20 corresponds to the shape of the annular receiving groove 14, and the inner cavity conductive piece 12 is disposed in the annular receiving groove. On the bottom wall of 14. As shown in FIGS. 1 and 2, the body 10, the brush 30, and the undulating disk 20 may each have a circular configuration, and the bottom portion of the undulating disk 20 is recessed upward to form a brush groove adapted to receive the brush 30.

The brush 30 is generally formed as an annular piece, and the outer periphery of the annular piece is provided with a brush claw 31. One end of the brush 31 is connected to the annular piece, and the other end of the brush 31 extends downward and then extends upward. Thus, when the undulating disk 20 is placed in the annular receiving groove 14, the lower end surface of the outer side wall of the undulating disk 20 abuts against the bottom wall of the annular receiving groove 14, and the other end of the brush 31 is directly pressed against the inner cavity conductive piece 12. The projection surface of the brush 20 in the axial direction coincides with the inner cavity conductive sheet 12.

Optionally, as shown in FIG. 1 and FIG. 5 , the bottom of the undulating disk 20 is provided with a plurality of positioning posts 24 , and the brush 30 is provided with a positioning hole 32 corresponding to the position of the positioning post 24 , and the positioning post 24 passes through the positioning hole 32 . To drive the brush 30 to rotate. Wherein, the positioning post 24 and the positioning hole 32 may be an interference fit, thereby improving the connection strength between the brush 30 and the wave plate 20. Of course, it will be understood by those skilled in the art that the brush 30 can also be fixed to the wave plate 20 by bonding or snapping, which is not described in detail herein.

In still other embodiments of the present invention, the rotary encoder 100 may further include an upper cover 50. The upper cover 50 is coupled to the body 10, and the undulating disk 20 and the brush 30 are located between the upper cover 50 and the body 10. As shown in FIG. 1, FIG. 2 and FIG. 7, the upper cover 50 has a substantially circular structure, and the upper cover 50 is attached to the undulating disk 20 and connected to the body 10. The undulating disk 20 is sandwiched between the upper cover 50 and the body 10. between. By providing the upper cover 50, the structure between the undulating disk 20 and the body 10 is compact, the degree of freedom of the undulating disk 20 in the axial direction is effectively defined, and dust can be prevented from falling into the interior of the rotary encoder 100.

Optionally, the upper surface of the body 10 is provided with a plurality of mounting posts 16 arranged along the circumferential direction thereof. The upper cover 50 is provided with a mounting hole 51 corresponding to the position of the mounting post 16 , and the mounting post 16 is riveted to the mounting hole 51 . . As shown in FIGS. 2, 6, and 7, the mounting hole 51 is provided at the outer edge of the upper surface of the upper cover 50 and outside the peripheral wall of the undulating disk 20, wherein the top wall of the undulating disk 20 and the bottom wall of the upper cover 50 are provided. Partial fit. In other words, the upper cover 50 defines only the degree of freedom of the undulating disk 20 in the axial direction, and does not define the degree of freedom of the undulating disk 20 in the circumferential direction. Thereby, the undulating disk 20 can be effectively defined between the body 10 and the upper cover 50 to prevent the undulating disk 20 from swaying during the rotation.

Advantageously, as shown in FIG. 1 , the lower surface of the upper cover 50 is provided with two symmetrically disposed limiting blocks 52 . Accordingly, the positioning body 52 is provided with two positioning elastic pieces 40 , and each limiting block 52 is respectively used for The positioning elastic piece 40 is limited. Upper cover 50 with After the body 10 is connected, the limiting block 52 is crimped onto the upper surface of the positioning elastic piece 40. Thereby, the positioning elastic piece 40 can be effectively fixed to the body 10. Optionally, two positioning elastic pieces 40 are oppositely disposed. That is, the two positioning elastic pieces 40 are located in the same radial direction of the body 10, and the two positioning elastic pieces 40 can define the displacement of the wave disk 20 in the radial direction, thereby improving the stability of the matching of the wave disk 20 and the body 10.

In still other embodiments of the present invention, the rotary encoder 100 may further include a knob 60. The knob 60 is coupled to the undulating disk 20 and rotatable about the axis of the body 10 to drive the undulating disk 20 to rotate. The lower surface of the upper cover 50 is provided with a dustproof skirt 53 extending along the circumferential direction thereof. The knob 60 is provided with an undercut 61 that is engaged with the dustproof skirt 53. The knob 60 is engaged with the upper cover 50 and the knob 60 is opposite. The upper cover 50 is rotatable about the axis of the body 10.

As shown in FIG. 1 and FIG. 3, the knob 60 is a lower open tubular structure, and the upper cover 50, the undulating disk 20 and the body 10 are all housed in the knob 60. The upper cover 50, the undulating disk 20, the body 10 and the knob 60 are coaxial. Settings. Since the undercut 61 of the side wall of the knob 60 is fastened to the lower end surface of the dustproof skirt 53 , the tightness of the cooperation between the knob 60 and the upper cover 50 can be increased, and the knob 60 can be prevented from shaking during the rotation, which is effective. The knob 60 is prevented from being loosened or deflected from the upper cover 50, thereby ensuring that the knob 60 drives the undulating disk 20 to rotate synchronously at all times.

Optionally, the knob 60 is provided with a plurality of driving columns 62. The wave plate 20 is provided with a mounting groove 25 adapted to the driving column 62. The driving column 62 is connected to the mounting groove 25 through the upper cover 50 to drive the wave plate 20. Turn. For example, as shown in FIGS. 1 and 2, the bottom wall of the knob 60 has three concentrically disposed arcuate drive posts 62 having three concentrically disposed arcuate mounting slots 25 at the upper end of the undulating disc 20, each curved drive post 62. It is adapted to the curved mounting groove 25 of the corresponding position. In this way, it can be ensured that the rotary knob 60 drives the undulating disk 20 to rotate synchronously.

Optionally, the radial dimension of the knob 60 is larger than the radial dimension of the upper cover 50. The inner ring of the knob 60 is provided with a plurality of positioning steps 63 uniformly spaced along the circumferential direction thereof, and each positioning step 63 is respectively stopped. The outer wall surface of the cover 50. The positioning step 63 is disposed around the outer wall surface of the upper cover 50, and the inner side surface of the positioning step 63 is in contact with the outer wall surface of the upper cover 50. Thereby, the tightness of the engagement of the knob 60 with the upper cover 50 further prevents the knob 60 from rattling during the rotation.

In still other embodiments of the present invention, the rotary encoder 100 may further include: a button 70. The button 70 is coupled to the body 10 through the knob 60, the upper cover 50, the undulating disk 20, and the brush 30, and the button 70 is movable along the axial direction of the body 10. As shown in FIGS. 1, 2, and 4, the top end of the rotary encoder 100 is provided with a button 70. The button 70 includes a circular head and an axially extending stem. The body 10 is provided with a through hole 17 penetrating in the axial direction thereof, and a bottom portion of the through hole 17 is provided with a mounting step 18. A buckle 71 corresponding to the mounting step 18 is disposed on the rod portion of the button 70, and the button 70 is engaged with the body 10. The upper surface of the knob 60 forms a receiving groove, and the receiving groove forms a communication hole. The rod portion of the button 70 passes through the communication hole 17 into the through hole 17 of the body 10, thereby achieving the cooperation of the mounting step 18 and the buckle 71, thereby effectively limiting the degree of freedom of the button 70 in the axial direction.

In other embodiments of the invention, the lower surface of the body 10 is provided with terminal legs 15 adapted to mount the rotary encoder 100 and a body positioning post 19 adapted to be applied to the body. The terminal pin 15 can usually be soldered to the board to be returned The road signal is output to the controller.

A home appliance (not shown) implemented in accordance with a second aspect of the present invention includes the rotary encoder 100 of the first aspect of the present invention, since the rotary encoder 100 according to the first aspect of the present invention has a simple structure, The manufacturing cost is low and the operation is convenient. Therefore, the home appliance according to the embodiment of the second aspect of the present invention has the advantages of low cost, convenient operation, and accurate adjustment of various functions.

In the description of the present invention, it is to be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "bottom", "inner", "outer", "axial", "radial", etc. are The orientation and the positional relationship shown in the drawings are merely for the convenience of the description of the invention and the simplification of the description, and are not intended to indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood. To limit the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or connected integrally; may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly above and above the second feature, or merely the first feature level being less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is understood that the foregoing embodiments are illustrative and not restrictive Variations, modifications, alterations and variations of the above-described embodiments are possible within the scope of the invention.

Claims

A rotary encoder, comprising:

a body having a mounting portion, the outer periphery of the mounting portion being provided with a lumen conductive sheet extending along a circumferential direction thereof;

a undulating disk disposed on the mounting portion and rotatable about an axis of the body;

a brush disposed between the body and the undulating disk and synchronously rotating with the undulating disk, the brush having at least two brush jaws that terminate against the inner cavity conductive sheet.
The rotary encoder according to claim 1, further comprising: at least one positioning elastic piece, wherein the positioning elastic piece is disposed on the body and located at an outer circumference of the inner cavity conductive piece, and the positioning elastic piece is At least a portion of the outer peripheral wall of the undulating disk is stopped.
The rotary encoder according to claim 2, wherein the outer peripheral wall of the undulating disk is provided with a plurality of positioning teeth spaced apart in a circumferential direction thereof, and between the two adjacent positioning teeth is defined The positioning slot, at least a portion of the positioning elastic piece extends into the positioning slot.
The rotary encoder according to claim 3, wherein the body is provided with a mounting buckle adapted to mount the positioning elastic piece, and two ends of the positioning elastic piece are respectively mounted on the mounting buckle The positioning elastic piece is provided with a positioning protrusion adapted to protrude into the positioning groove.
The rotary encoder according to claim 4, wherein the free end of the positioning projection is formed as a curved surface, and a smooth transition between the positioning tooth and the positioning groove is formed.
The rotary encoder according to any one of claims 1 to 5, wherein the mounting portion is formed as a hollow cylinder that protrudes upward along an upper surface of the body, the hollow cylinder and the hollow cylinder The body is coaxial, and the undulating disk is provided with an intermediate center hole adapted to be fitted to the hollow cylinder.
The rotary encoder according to claim 6, wherein an upper surface of the body is provided with an annular receiving groove coaxial with the hollow cylinder and having an upper end open, and the shape of the undulating disk and the ring Corresponding to the shape of the receiving groove, the inner cavity conductive piece is disposed on the bottom wall of the annular receiving groove.
The rotary encoder according to any one of claims 1 to 7, wherein a bottom of the undulating disk is provided with a plurality of positioning posts, and the brush is provided with a positioning corresponding to the position of the positioning post. a hole through which the positioning post passes to drive the brush to rotate.
The rotary encoder according to any one of claims 1 to 8, wherein a lower surface of the body is provided with a terminal leg adapted to mount the rotary encoder and is adapted to perform the body Positioned body positioning column.
A rotary encoder according to any one of claims 2 to 9, further comprising: an upper cover, said upper cover being connected to said body, said undulating disk and said brush being located on said Between the cover and the body.
The rotary encoder according to claim 10, wherein the upper surface of the body is provided with a plurality of Mounting posts spaced apart along the circumferential direction thereof, the upper cover being provided with mounting holes corresponding to the positions of the mounting posts, the mounting posts being riveted to the mounting holes.
The rotary encoder according to claim 10, wherein the lower surface of the upper cover is provided with two symmetrically disposed limiting blocks, and each of the limiting blocks is used for respectively performing the positioning elastic piece. Limit.
The rotary encoder of claim 10, further comprising: a knob coupled to the undulating disk and rotatable about an axis of the body to cause the undulating disk to rotate.
The rotary encoder according to claim 13, wherein the lower surface of the upper cover is provided with a dustproof skirt extending along a circumferential direction thereof, and the knob is provided with the dustproof skirt buckle The inverted buckle is engaged with the upper cover and the knob is rotatable relative to the upper cover about an axis of the body.
The rotary encoder according to claim 13, wherein the knob is provided with a plurality of driving columns, and the wave plate is provided with a mounting groove adapted to the driving column, and the driving column is worn. The upper cover is connected to the mounting groove to drive the undulating disk to rotate.
The rotary encoder according to claim 13, wherein a radial dimension of the knob is larger than a radial dimension of the upper cover, and an inner ring of the knob is provided with a plurality of uniform intervals along a circumferential direction thereof. The positioning steps are arranged, and each of the positioning steps respectively abuts against an outer wall surface of the upper cover.
A rotary encoder according to claim 13, further comprising: a button connected to said body through said knob, said upper cover, said undulating disk and a brush, said button It is movable along the axial direction of the body.
The rotary encoder according to claim 17, wherein the body is provided with a through hole extending in an axial direction thereof, and a bottom of the through hole is provided with a mounting step, and the button is provided with a seat A buckle corresponding to the mounting step is described, and the button is engaged with the body.
A household appliance, comprising the rotary encoder of any one of claims 1-18.