Knob mechanism

Abstract

The utility model discloses a knob mechanism which is applied to a knob switch comprising an encoder, the encoder comprises a fixed part and a rotating part, and the knob mechanism comprises a rotating piece, a knob seat and a supporting piece. The rotating piece is provided with a first end and a second end which are oppositely arranged, a storage hole penetrating through the first end and the second end is formed in the rotating piece, and an annular protrusion is arranged in the middle of the storage hole in a protruding mode; the knob seat is arranged in the storage hole and close to the first end, a through hole coaxial with the storage hole is formed in the knob seat, and the knob seat is clamped with the rotating part so as to drive the rotating part to rotate synchronously when the rotating part drives the knob seat to rotate; the supporting piece comprises a supporting part and a clamping part connected with the supporting part, the supporting part is movably arranged in the containing hole and located on the side, away from the rotary knob base, of the annular protrusion, a plurality of supporting protrusions abutting against the annular protrusion are arranged on the side, facing the annular protrusion, of the supporting part in a protruding mode, and the clamping part penetrates through the penetrating hole and is connected with the fixing part in a clamped mode. The knob mechanism can improve the stability and accuracy of controlling the knob switch.

Description

Technical Field

[0001] This application relates to the technical field of knobs, and particularly to a knob mechanism. Background Art

[0002] A knob switch is a manually rotatable switch element that can be rotated continuously multiple times according to functional requirements, and the rotation angle can reach 360°. Many household appliances or smart home appliances on the market are equipped with knob switches, such as water heaters, gas stoves, microwave ovens, induction cookers, lamps, etc.

[0003] Currently, a general knob switch generally includes a knob and an encoder. The encoder includes a fixed part and a rotating part. The rotating part is sleeved outside the fixed part to achieve the rotation and control functions. The knob is connected to the rotating part to drive the rotating part under the action of an external force. However, since the rotating part and the fixed part are movably connected, the rotating part will swing when rotating relative to the fixed part, so that the knob will swing greatly under the drive of the rotating part, thereby affecting the stability and accuracy of operating the knob switch. Summary of the Utility Model

[0004] In view of the above, it is necessary to provide a knob mechanism to improve the stability and accuracy of operating a knob switch.

[0005] An embodiment of this application provides a knob mechanism applied to a knob switch including an encoder. The encoder includes a fixed part and a rotating part rotatably arranged on the fixed part, and includes a rotating member, a knob seat and a support member; the rotating member has a first end and a second end arranged oppositely, and the rotating member is provided with a receiving hole penetrating through the first end and the second end, and a ring-shaped protrusion coaxial with the receiving hole is convexly provided in the middle of the receiving hole; the knob seat is arranged in the receiving hole and close to the first end, and the knob seat is connected to the rotating member. The knob seat is provided with a through hole coaxial with the receiving hole, and the knob seat is used for clamping with the rotating part to drive the rotating part to rotate synchronously when the rotating member drives the knob seat to rotate; the support member includes a support part and a clamping part connected to the support part. The support part is movably arranged in the receiving hole and located on the side of the ring-shaped protrusion away from the knob seat. A plurality of support protrusions arranged in an array and abutting against the ring-shaped protrusion are convexly provided on the side of the support part facing the ring-shaped protrusion, and the clamping part penetrates through the through hole and is used for clamping with the fixed part.

[0006] In the knob mechanism of the embodiment of the present application, a receiving hole is formed in the rotating member, a ring-shaped protrusion coaxial with the receiving hole is convexly provided in the middle of the receiving hole, and the supporting portion of the supporting member is clamped with the fixing portion of the encoder. A plurality of supporting protrusions arranged in an array and abutting against the ring-shaped protrusion are convexly provided on one side of the supporting portion of the supporting member facing the ring-shaped protrusion. When the rotating member is screwed, the rotating member drives the rotating portion to rotate through the knob seat. Since the supporting portion of the supporting member is clamped with the fixing portion, the supporting member will not swing relative to the fixing portion. When the rotating member rotates, the supporting member supports the rotating member through a plurality of supporting protrusions, so that the swinging amplitude of the rotating member and the knob seat can be effectively reduced, and thus it is beneficial to improve the stability and accuracy of operating the knob switch.

[0007] In some embodiments, the plurality of supporting protrusions are spherical, and the arc ends of the plurality of supporting protrusions are close to the ring-shaped protrusion.

[0008] In some embodiments, a plurality of abutting protrusions arranged in an array and protruding from the first end are convexly provided on the side of the knob seat facing away from the ring-shaped protrusion.

[0009] In some embodiments, a plurality of spaced slots are formed in the inner wall of the receiving hole near the first end, a plurality of spaced first buckles are provided on the circumferential side of the knob seat, and the plurality of first buckles and the plurality of slots respectively correspond one by one, and each first buckle is in clamping fit with the corresponding slot.

[0010] In some embodiments, a positioning protrusion spaced from the plurality of slots is convexly provided on the inner wall of the receiving hole near the first end, a positioning groove spaced from the plurality of first buckles is formed on the circumferential side wall of the knob seat, and the positioning protrusion is inserted into the positioning groove to position the positions of the plurality of first buckles relative to the plurality of slots.

[0011] In some embodiments, the through hole is used to accommodate the rotating portion, and a plurality of spaced second buckles extending into the through hole are provided on the part of the knob seat near the through hole, and the plurality of second buckles are used to be clamped with the rotating portion.

[0012] In some embodiments, a first limiting protrusion spaced from the plurality of second buckles is convexly provided on the inner wall of the through hole, and the first limiting protrusion is used to be inserted into the rotating portion to limit the position of the knob seat relative to the rotating portion.

[0013] In some embodiments, a plurality of spaced third buckles are provided on the circumferential side of the clamping portion, and the plurality of third buckles are used to be clamped with the fixing portion.

[0014] In some embodiments, a second limiting protrusion spaced from the plurality of third buckles is protruded on the peripheral side wall of the clamping portion, and the second limiting protrusion is used to be inserted into the fixing portion to limit the position of the clamping portion relative to the fixing portion.

[0015] In some embodiments, the rotary switch further includes a display module, and an assembly groove for carrying the display module is formed on a side of the supporting portion away from the clamping portion. Description of the Drawings

[0016] Figure 1 is a three-dimensional structural schematic diagram of a knob mechanism provided by an embodiment of the present application.

[0017] Figure 2 is Figure 1 an exploded structural schematic diagram of the knob mechanism shown.

[0018] Figure 3 is Figure 2 an enlarged schematic diagram of region III in the knob mechanism shown.

[0019] Figure 4 is Figure 2 an enlarged schematic diagram of region IV in the knob mechanism shown.

[0020] Figure 5 is Figure 1 an exploded structural schematic diagram of the knob mechanism shown from another angle.

[0021] Figure 6 is an exploded structural schematic diagram of a rotary switch provided by an embodiment of the present application.

[0022] Figure 7 is Figure 6 a three-dimensional structural schematic diagram of an encoder in the rotary switch shown.

[0023] Description of the Main Component Symbols

[0024] Rotary switch 1000

[0025] Knob mechanism 100

[0026] Rotating member 10

[0027] First end 11

[0028] Second end 12

[0029] Receiving hole 13

[0030] Annular protrusion 14

[0031] Card slot 15

[0032] Positioning protrusion 16

[0033] Guide inclined plane 161

[0034] Anti-slip groove 17

[0035] Knob base 20

[0036] Outer ring 21

[0037] First avoidance port 211

[0038] First buckle 212

[0039] Elastic plate 2121

[0040] Snap projection 2122

[0041] Positioning groove 213

[0042] Abutting projection 214

[0043] Inner ring 22

[0044] Perforation 221

[0045] Second avoidance port 222

[0046] Second buckle 223

[0047] First limiting projection 224

[0048] Disassembly groove 225

[0049] Connection part 23

[0050] Honeycomb-shaped reinforcing rib 231

[0051] Supporting part 30

[0052] Supporting portion 31

[0053] Supporting projection 311

[0054] Reinforcing rib 312

[0055] Assembly groove 313

[0056] Positioning hole 314

[0057] Disassembly hole 315

[0058] Snap joint part 32

[0059] Avoidance port 321

[0060] Third buckle 322

[0061] Second limiting projection 323

[0062] Through hole 33

[0063] Bottom case 200

[0064] Encoder 300

[0065] Rotating part 310

[0066] First clamping groove 3101

[0067] First limiting groove 3102

[0068] Fixing part 320

[0069] Inner hole 3201

[0070] Second clamping groove 3202

[0071] Second limiting groove 3203

[0072] Display module 400

[0073] Flexible circuit board 410 Detailed implementation manners

[0074] The following details the implementation manners of the present application. Examples of the implementation manners are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The implementation manners described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0075] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, it should be noted that the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0076] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that can communicate with each other. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances. Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0077] Please refer to Figure 1 、 Figure 6 and Figure 7 , an embodiment of the present application provides a knob mechanism 100, which is applied to a knob switch 1000 and is a part of the knob switch 1000. The knob switch 1000 further includes a bottom case 200, an encoder 300, and a display module 400. The encoder 300 is inserted into the bottom case 200. The encoder 300 includes a rotating part 310 and a fixed part 320. The rotating part 310 is rotatably arranged on the fixed part 320. Specifically, the rotating part 310 is nested outside the fixed part 320 to achieve the rotation function. The display module 400 can be a display screen with touch function. Obviously, this is not a limitation to the embodiment of the present application.

[0078] Please refer to in combination Figure 2 、 Figure 3 and Figure 5 , in this embodiment, the knob mechanism 100 includes a rotating member 10, a knob base 20, and a support member 30.

[0079] The rotating member 10 is columnar. The rotating member 10 has a first end 11 and a second end 12 which are oppositely arranged. The rotating member 10 is provided with a receiving hole 13 that penetrates through the first end 11 and the second end 12. A ring-shaped protrusion 14 coaxial with the receiving hole 13 protrudes from the middle of the receiving hole 13.

[0080] The knob base 20 is disc-shaped. The knob base 20 is arranged in the receiving hole 13 and is close to the first end 11. The knob base 20 is connected to the rotating member 10 and is clamped with the rotating part 310. When the rotating member 10 drives the knob base 20 to rotate, the knob base 20 drives the rotating part 310 to rotate synchronously. The knob base 20 is provided with a through hole 221 coaxial with the receiving hole 13.

[0081] The support member 30 includes a support portion 31 and a clamping portion 32 connected to the support portion 31. The support portion 31 is disc-shaped, the clamping portion 32 is columnar, the clamping portion 32 is coaxially arranged with the support portion 31, the support portion 31 is movably arranged in the receiving hole 13 and is located on the side of the annular protrusion 14 away from the knob base 20. The display module 400 is carried on the side of the support portion 31 away from the annular protrusion 14. A plurality of support protrusions 311 arranged in an array and abutting against the annular protrusion 14 protrude from the side of the support portion 31 facing the annular protrusion 14. The clamping portion 32 passes through the through hole 221 and is clamped with the fixing portion 320.

[0082] When the rotating member 10 is screwed, the rotating member 10 drives the rotating portion 310 to rotate through the knob base 20. Since the support portion 31 of the support member 30 is clamped with the fixing portion 320 of the encoder 300, the support member 30 will not swing relative to the fixing portion 320. The support member 30 abuts against the annular protrusion 14 on the rotating member 10 through a plurality of support protrusions 311, so that the plurality of support protrusions 311 can support the rotating member 10 when the rotating member 10 rotates, thereby effectively reducing the swing amplitude of the rotating member 10 and the knob base 20, and further facilitating the improvement of the stability and accuracy of operating the knob switch 1000.

[0083] In this embodiment, the plurality of support protrusions 311 are uniformly arranged along the circumferential direction of the support portion 31. When the plurality of support protrusions 311 are three, the three support protrusions 311 can be arranged in an equilateral triangle. When the plurality of support protrusions 311 are four, the four support protrusions 311 can be arranged in a square. In this way, it is beneficial to improve the stability of the plurality of support protrusions 311 in supporting the rotating member 10.

[0084] In this embodiment, the plurality of support protrusions 311 are spherical or a part of a sphere, and the arc surface ends of the plurality of support protrusions 311 are close to the annular protrusion 14. In this way, it is beneficial to reduce the friction between the plurality of support protrusions 311 and the annular protrusion 14, and further beneficial to improve the smoothness of screwing the rotating member 10.

[0085] In this embodiment, the side of the annular protrusion 14 facing the plurality of support protrusions 311 is a mirror surface or is polished. In this way, it is beneficial to reduce the friction between the plurality of support protrusions 311 and the annular protrusion 14, and further beneficial to improve the smoothness of screwing the rotating member 10.

[0086] In this embodiment, a plurality of anti-slip grooves 17 are formed on the outer side of the rotating member 10. The plurality of anti-slip grooves 17 extend along the axis of the rotating member 10 and are arranged at intervals along the circumferential direction of the rotating member 10. In this way, it is beneficial to increase the friction when the operator screws the rotating member 10.

[0087] In this embodiment, a plurality of spaced slots 15 are formed in the inner wall of the receiving hole 13 near the first end 11. A plurality of spaced first latches 212 are provided on the circumferential side of the knob base 20. The plurality of first latches 212 respectively correspond to the plurality of slots 15 one by one, and each first latch 212 is snap-fitted with the corresponding slot 15. In this way, it is convenient to quickly fixedly connect the knob base 20 and the rotating member 10.

[0088] In this embodiment, the plurality of slots 15 are uniformly distributed along the inner wall of the receiving hole 13, and the plurality of first latches 212 are uniformly distributed along the circumferential direction of the knob base 20. In this way, it is beneficial to improve the stability when the knob base 20 and the rotating member 10 are snap-fitted.

[0089] In this embodiment, the knob base 20 includes an outer ring 21, an inner ring 22 and a connecting portion 23. The inner ring 22 is located in the middle of the outer ring 21 and is coaxially arranged with the outer ring 21. A through hole 221 is formed in the middle of the inner ring 22. The connecting portion 23 is located between the inner ring 22 and the outer ring 21 and is connected to the inner ring 22 and the outer ring 21. A honeycomb-shaped reinforcing rib 231 radiating outward with the inner ring 22 as the center is convexly provided on the side of the connecting portion 23 facing away from the supporting portion 31, which is beneficial to improving the structural strength of the connecting portion 23; along the axial direction of the knob base 20, the thicknesses of the inner ring 22 and the outer ring 21 are greater than the thickness of the connecting portion 23. The connecting portion 23 extends from one end of the outer ring 21 close to the annular protrusion 14 towards one end of the inner ring 22 close to the annular protrusion 14. A plurality of first avoidance openings 211 are formed in the outer ring 21. Each first avoidance opening 211 extends along the axial direction of the outer ring 21 to the side of the outer ring 21 away from the connecting portion 23. The plurality of first latches 212 respectively correspond to the plurality of first avoidance openings 211 one by one. Each first latch 212 is connected to the inner wall of the corresponding first avoidance opening 211 close to the connecting portion 23. Each first avoidance opening 211 avoids the corresponding first latch 212 when the corresponding first latch 212 undergoes elastic deformation.

[0090] In this embodiment, when the knob base 20 and the rotating member 10 are snap-fitted through the plurality of first latches 212 and the plurality of slots 15, the knob base 20 abuts against the side of the annular protrusion 14 facing away from the supporting portion 31. The annular protrusion 14 can limit the movement of the knob base 20 along the axial direction of the rotating member 10 towards the supporting portion 31, which is beneficial to improving the stability after the knob base 20 and the rotating member 10 are snap-fitted.

[0091] In this embodiment, the distance between the outer ring 21 and the annular protrusion 14 is less than the distance between the inner ring 22 and the annular protrusion 14. The connecting portion 23 extends from one end of the outer ring 21 close to the annular protrusion 14 towards one end of the inner ring 22 close to the annular protrusion 14 in a transitional manner, so that the outer ring 21 abuts against and is limited by the annular protrusion 14, reducing the abutting area between the knob base 20 and the annular protrusion 14 and avoiding the unevenness of the connecting portion 23 from affecting the normal assembly of the knob base 20 and the rotating member 10.

[0092] In this embodiment, the outer diameter of the outer ring 21 is equal to or slightly smaller than the inner diameter of the receiving hole 13, so that the outer ring 21 abuts against the inner wall of the receiving hole 13, and positions the knob base 20 and the rotating member 10 in the radial direction of the knob base 20.

[0093] In this embodiment, each first buckle 212 includes an elastic plate 2121 and a clamping protrusion 2122. The elastic plate 2121 is connected to the inner wall of the corresponding first avoidance opening 211 near the connecting portion 23 and extends along the axial direction of the outer ring 21. The clamping protrusion 2122 protrudes from the side of the elastic plate 2121 facing away from the inner ring 22, and the clamping protrusion 2122 is wedge-shaped. When the first buckle 212 is clamped with the corresponding card slot 15, the clamping protrusion 2122 first abuts against the inner wall of the receiving hole 13 and causes the elastic plate 2121 to undergo elastic deformation, and then the clamping protrusion 2122 is aligned with the corresponding card slot 15, and the elastic plate 2121 elastically recovers to insert the clamping protrusion 2122 into the corresponding card slot 15.

[0094] In this embodiment, the knob base 20 is made of an elastic material such as plastic or metal, and the plurality of first buckles 212 are integrally formed with the knob base 20, which is beneficial to the structural strength after the knob base 20 and the rotating member 10 are clamped.

[0095] In this embodiment, a positioning protrusion 16 spaced from the plurality of card slots 15 protrudes from the inner wall of the receiving hole 13 near the first end 11. A positioning groove 213 spaced from the plurality of first buckles 212 is formed on the circumferential side wall of the knob base 20. The positioning groove 213 is specifically formed by inward depression of the outer ring 21. The positioning protrusion 16 is inserted into the positioning groove 213 to position the positions of the plurality of first buckles 212 relative to the plurality of card slots 15, so as to facilitate the quick clamping of the plurality of first buckles 212 and the plurality of card slots 15. Moreover, the cooperation of the positioning protrusion 16 and the positioning groove 213 can further limit the relative rotation of the rotating member 10 and the knob base 20, which is beneficial to improving the accuracy of operating the knob switch 1000.

[0096] In this embodiment, the positioning protrusion 16 is strip-shaped and extends along the axial direction of the rotating member 10. One end of the positioning protrusion 16 away from the annular protrusion 14 has a guiding inclined surface 161. The included angle between the guiding inclined surface 161 and the inner wall of the receiving hole 13 is an acute angle. The guiding inclined surface 161 guides when the positioning protrusion 16 is inserted into the positioning groove 213, so as to facilitate the quick insertion of the positioning protrusion 16 into the positioning groove 213.

[0097] Please further refer to Figure 4, in this embodiment, a plurality of abutting protrusions 214 are convexly provided on the side of the knob base 20 facing away from the annular protrusion 14, and are arranged in an array and protrude from the first end 11. Specifically, when the knob base 20 is snap-fitted with the encoder 300 and the rotating member 10 is assembled with the knob base 20, there are certain gaps between both the rotating member 10 and the knob base 20 and the bottom case 200. By convexly providing a plurality of abutting protrusions 214 on the side of the knob base 20 facing away from the annular protrusion 14, the plurality of abutting protrusions 214 can abut against the bottom case 200. When the rotating member 10 is screwed to drive the rotating part 310 to rotate through the knob base 20, the plurality of abutting protrusions 214 can support the knob base 20, thereby further reducing the swing amplitude of the rotating member 10 and the knob base 20, and further facilitating the improvement of the stability and accuracy of operating the knob switch 1000.

[0098] In this embodiment, the plurality of abutting protrusions 214 are spherical or a part of a sphere, and the arc ends of the plurality of abutting protrusions 214 are away from the annular protrusion 14. In this way, it is beneficial to reduce the friction between the plurality of abutting protrusions 214 and the bottom case 200, and further beneficial to improve the smoothness of screwing the rotating member 10.

[0099] In this embodiment, the plurality of abutting protrusions 214 are uniformly arranged along the circumferential direction of the knob base 20. When the plurality of abutting protrusions 214 are three, the three abutting protrusions 214 can be arranged in an equilateral triangle array; when the plurality of abutting protrusions 214 are four, the four abutting protrusions 214 can be arranged in a square array. In this way, it is beneficial to improve the stability of the plurality of abutting protrusions 214 in supporting the knob base 20.

[0100] In this embodiment, the plurality of abutting protrusions 214 are convexly provided on the side of the outer ring 21 facing away from the annular protrusion 14, so that the plurality of abutting protrusions 214 are farther away from the center of gravity of the knob base 20, and further beneficial to improve the stability of the plurality of abutting protrusions 214 in supporting the knob base 20.

[0101] In this embodiment, when the knob base 20 is snap-fitted with the rotating part 310 of the encoder 300, the rotating part 310 of the encoder 300 is received in the through hole 221. A plurality of second buckles 223 are provided on the part of the knob base 20 close to the through hole 221, are arranged at intervals and extend into the through hole 221, and the plurality of second buckles 223 are snap-fitted with the rotating part 310. Specifically, a plurality of first engaging grooves 3101 are provided at intervals on the circumferential side wall of the rotating part 310, and the plurality of second buckles 223 correspond to the plurality of first engaging grooves 3101 one by one. When the rotating part 310 is inserted into the through hole 221, each second buckle 223 is snap-fitted with the corresponding first engaging groove 3101. In this way, it is beneficial to improve the quickness and stability of the connection between the knob base 20 and the rotating part 310 of the encoder 300.

[0102] In this embodiment, a plurality of second buckles 223 are integrally formed with the knob base 20. A plurality of second avoidance openings 222 are formed in the inner ring 22 of the knob base 20. Each second avoidance opening 222 extends axially along the inner ring 22 to the side of the inner ring 22 away from the connecting portion 23. The plurality of second buckles 223 respectively correspond to the plurality of second avoidance openings 222 one by one. Each second buckle 223 is connected to the inner wall of the corresponding second avoidance opening 222 close to the connecting portion 23. Each second avoidance opening 222 avoids the corresponding second buckle 223 when the corresponding second buckle 223 undergoes elastic deformation.

[0103] In this embodiment, the structure of the second buckle 223 is basically the same as that of the first buckle 212, but the inclination direction of the clamping protrusion 2122 of the second buckle 223 is different from that of the first buckle 212, which will not be elaborated herein.

[0104] In this embodiment, a plurality of disassembly grooves 225 are further formed in the inner wall of the inner ring 22 of the knob base 20. The plurality of disassembly grooves 225 respectively correspond to the plurality of second avoidance openings 222 one by one. Both ends of each disassembly groove 225 communicate with the corresponding second avoidance opening 222 and the side of the inner ring 22 close to the connecting portion 23 respectively. When it is necessary to disassemble the knob base 20, only need to use a tool such as a screwdriver to insert into the disassembly groove 225 and abut against the corresponding second buckle 223, and then dial the second buckle 223 outwards, so that the second buckle 223 can be quickly disengaged from the corresponding first clamping groove 3101, which is beneficial to improving the convenience of disassembling the knob base 20.

[0105] In this embodiment, a first limiting protrusion 224 is convexly provided on the inner wall of the through hole 221 and is spaced from the plurality of second buckles 223. The first limiting protrusion 224 is used to insert into the rotating portion 310 to limit the position of the knob base 20 relative to the rotating portion 310. Specifically, a first limiting groove 3102 is further formed on the circumferential side wall of the rotating portion 310. The cooperation between the first limiting protrusion 224 and the first limiting groove 3102 can make the second buckle 223 and the plurality of first clamping grooves 3101 face each other respectively, and can limit the depth of insertion of the rotating portion 310 into the through hole 221, which is beneficial to improving the accuracy of connecting the knob base 20 and the rotating portion 310; in addition, the cooperation between the first limiting protrusion 224 and the first limiting groove 3102 can also limit the rotation of the knob base 20 relative to the rotating portion 310, which is beneficial to improving the accuracy of operating the knob switch 1000.

[0106] In this embodiment, a plurality of third buckles 322 are provided at intervals on the circumferential side of the clamping portion 32, and the plurality of third buckles 322 are used for clamping with the fixing portion 320. Specifically, the fixing portion 320 is a cylindrical structure, and a plurality of second clamping grooves 3202 are formed in the inner wall of the fixing portion 320. The plurality of second clamping grooves 3202 correspond to the plurality of third buckles 322 one by one. When the clamping portion 32 is inserted into the inner hole 3201 of the fixing portion 320, each third buckle 322 is clamped with the corresponding second clamping groove 3202. In this way, it is beneficial to improve the quickness and stability of connecting the clamping portion 32 and the fixing portion 320.

[0107] In this embodiment, the support member 30 is provided with a through hole 33 penetrating through the clamping portion 32 and the support portion 31, and the through hole 33 is coaxially arranged with the clamping portion 32 and the support portion 31. The flexible circuit board 410 of the display module 400 can pass through the through hole 33 and be inserted into the PCB board (not shown in the figure) in the bottom case 200. A plurality of avoidance openings 321 communicating with the through hole 33 are formed on the circumferential side wall of the clamping portion 32, and the plurality of avoidance openings 321 extend along the axial direction of the clamping portion 32 to the side of the clamping portion 32 away from the support portion 31. The plurality of avoidance openings 321 correspond to the plurality of third buckles 322 one by one. Each third buckle 322 is connected to the side wall of the corresponding avoidance opening 321 close to the support portion 31, and each avoidance opening 321 avoids the corresponding third buckle 322 when the corresponding third buckle 322 undergoes elastic deformation.

[0108] In this embodiment, the support member 30 is made of an elastic material such as plastic or metal, and the plurality of third buckles 322 are integrally formed with the support member 30, which is beneficial to the structural strength after the support member 30 and the fixing portion 320 are clamped.

[0109] In this embodiment, the third buckle 322 has the same structure as the second buckle 223, and will not be described in detail here.

[0110] In this embodiment, a second limiting protrusion 323 is protruded on the circumferential side wall of the clamping portion 32 and is spaced from the plurality of third buckles 322. The second limiting protrusion 323 is used for inserting into the fixing portion 320 to limit the position of the clamping portion 32 relative to the fixing portion 320. Specifically, a second limiting groove 3203 is formed in the inner wall of the fixing portion 320. The cooperation between the second limiting protrusion 323 and the second limiting groove 3203 can make the third buckle 322 and the plurality of second clamping grooves 3202 face each other respectively, and can limit the depth of the clamping portion 32 inserted into the inner hole 3201 of the fixing portion 320, which is beneficial to improving the accuracy of connecting the clamping portion 32 and the fixing portion 320; in addition, the cooperation between the second limiting protrusion 323 and the second limiting groove 3203 can also limit the rotation of the clamping portion 32 relative to the fixing portion 320, which is beneficial to improving the stability of connecting the clamping portion 32 and the fixing portion 320.

[0111] In this embodiment, a plurality of reinforcing ribs 312 radiating outward from the clamping portion 32 are protruded from one side of the support portion 31 facing the clamping portion 32, thereby facilitating improving the structural strength of the support portion 31.

[0112] In this embodiment, a mounting groove 313 for carrying the display module 400 is provided on one side of the support portion 31 away from the clamping portion 32, and a positioning hole 314 for positioning the display module 400 is provided at the bottom of the mounting groove 313, thereby facilitating the accuracy of assembling the display module 400.

[0113] In this embodiment, the bottom of the assembly groove 313 is further provided with a plurality of disassembly holes 315, and the plurality of disassembly holes 315 are respectively opposite to the plurality of third buckles 322. When the support member 30 needs to be disassembled, it is only necessary to insert a tool such as a screwdriver into the disassembly hole 315 and abut against the corresponding third buckle 322, and then push the second buckle 223 inward, so that the third buckle 322 can be quickly disengaged from the corresponding second holding groove 3202, thereby facilitating the convenience of disassembling the support member 30.

[0114] In summary, the knob mechanism 100 of the embodiment of the present application is provided with a storage hole 13 on the rotating member 10, a ring-shaped protrusion 14 coaxially arranged with the storage hole 13 is protruded in the middle part of the storage hole 13, and a support portion 31 of the support member 30 is clamped with the fixed portion 320 of the encoder 300, and a plurality of support protrusions 311 arranged in an array and abutting against the annular protrusion 14 are protruded on the side of the support portion 31 of the support member 30 facing the annular protrusion 14. When the rotating member 10 is screwed, the rotating member 10 drives the rotating portion 310 to rotate through the knob seat 20. Since the support portion 31 of the support member 30 is clamped with the fixed portion 320, the support member 30 will not swing relative to the fixed portion 320. When the rotating member 10 rotates, the support member 30 supports the rotating member 10 through the plurality of support protrusions 311, thereby effectively reducing the swing amplitude of the rotating member 10 and the knob seat 20, which is beneficial to improving the stability and accuracy of operating the knob switch 1000.

[0115] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and therefore it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A knob mechanism, applied to a knob switch including an encoder, wherein the encoder includes a fixed portion and a rotating portion rotatably disposed on the fixed portion, characterized in that: include: A rotating member, the rotating member having a first end and a second end arranged opposite to each other, the rotating member is provided with a receiving hole penetrating the first end and the second end, and a ring-shaped protrusion arranged coaxially with the receiving hole is convexly provided in the middle of the receiving hole; A knob seat, disposed in the receiving hole and close to the first end, and connected to the rotating member, the knob seat is provided with a through hole coaxially arranged with the receiving hole, and the knob seat is used to engage with the rotating part, so as to drive the rotating part to rotate synchronously when the rotating member drives the knob seat to rotate; The support member includes a support portion and a clamping portion connected to the support portion, wherein the support portion is movably arranged in the storage hole and is located on the side of the annular protrusion away from the knob seat, and the support portion is provided with a plurality of support protrusions arranged in an array and abutting against the annular protrusion on the side facing the annular protrusion, and the clamping portion is penetrated through the through hole and is used to clamp with the fixing portion.

2. The knob mechanism according to claim 1, characterized in that: The plurality of support protrusions are spherical, and the arc surface ends of the plurality of support protrusions are close to the annular protrusion.

3. The knob mechanism according to claim 1, characterized in that: A plurality of abutment protrusions arranged in an array and protruding from the first end are protruded from one side of the knob seat away from the annular protrusion.

4. The knob mechanism according to claim 1, characterized in that: A plurality of slots are arranged at intervals on the inner wall of the storage hole near the first end, and a plurality of first buckles are arranged at intervals on the circumference of the knob seat. The plurality of first buckles correspond to the plurality of slots one by one, and each first buckle is snap-fitted with the corresponding slot.

5. The knob mechanism according to claim 4, characterized in that: The inner wall of the storage hole near the first end is provided with a positioning protrusion that is spaced apart from the multiple card slots, and the peripheral side wall of the knob seat is provided with a positioning groove that is spaced apart from the multiple first buckles. The positioning protrusion is inserted into the positioning groove to position the multiple first buckles relative to the multiple card slots.

6. The knob mechanism according to claim 1, characterized in that: The through hole is used to accommodate the rotating part, and a portion of the knob seat close to the through hole is provided with a plurality of second buckles that are spaced apart and extend into the through hole, and the plurality of second buckles are used to be engaged with the rotating part.

7. The knob mechanism according to claim 6, characterized in that: The inner wall of the through hole is provided with a first limiting protrusion spaced apart from the plurality of second buckles, and the first limiting protrusion is used to be inserted into the rotating part to limit the position of the knob seat relative to the rotating part.

8. The knob mechanism according to claim 1, characterized in that: A plurality of third buckles arranged at intervals are provided on the peripheral side of the clamping portion, and the plurality of third buckles are used for clamping with the fixing portion.

9. The knob mechanism according to claim 8, characterized in that: A second limiting protrusion is convexly disposed on the peripheral side wall of the clamping portion and is spaced apart from the plurality of third buckles. The second limiting protrusion is used to be inserted into the fixing portion to limit the position of the clamping portion relative to the fixing portion.

10. The knob mechanism according to any one of claims 1 to 9, characterized in that: The knob switch further comprises a display module, and a mounting groove for carrying the display module is formed on a side of the support portion away from the clamping portion.

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