Multi-functional knob device

Abstract

The utility model discloses a multifunctional knob device, include: a knob, a base and a display module, display module is fixed on the display fixed seat, display fixed seat has a axle column, and the base has a shaft sleeve, and the axle column is jointed with the shaft sleeve, and the display fixed seat can slide along the axial direction of the axle column relative to the base, bearing is arranged between the display fixed seat and the knob, and the bearing contains an outer ring and an inner ring, and the display fixed seat has a plurality of first clamping hooks, and the first clamping hook links the inner ring of bearing, and the knob has a plurality of second clamping hooks, and the second clamping hook links the outer ring of bearing, and the knob is rotated around the display fixed seat through the bearing, the key board is set up in the base, and the axle column of display fixed seat is jointed with the key board.

Description

Technical Field

[0001] This utility model relates to a multifunctional knob, and in particular to a knob that, in addition to having a rotatable outer ring, also has a pressable button in the middle, and the button surface can display information. Background Technology

[0002] Please refer to the existing multi-function knob. Figures 1A-1C The diagram shows a display mounting base 100, a portion of the base 200, and a knob 300. The display mounting base 100 has double ribs 110, and the portion of the base 200 has guide grooves 220. The double ribs 110 and the guide grooves 220 constitute the sliding structure of the multi-functional knob. However, due to the draft angle limitation of the production mold, the tolerance of the clearance fit is relatively large, and the knob 300 and the display mounting base 100 will wobble after assembly. Utility Model Content

[0003] This utility model provides a multifunctional knob device, the main purpose of which is to solve the problem of knob shaking.

[0004] To achieve the aforementioned objectives, this utility model provides a multifunctional knob device, comprising:

[0005] A display mounting bracket, a knob, a base, and a display module;

[0006] The display module is fixed on the display mounting base;

[0007] The display mounting base has a shaft column and the base has a bushing. The shaft column engages with the bushing, and the display mounting base can slide relative to the base along the axial direction of the shaft column.

[0008] A bearing is provided between the display mounting base and the knob. The bearing includes an outer ring and an inner ring. The display mounting base has a plurality of first hooks that engage the inner ring of the bearing. The knob has a plurality of second hooks that engage the outer ring of the bearing. The knob is allowed to rotate around the display mounting base via the bearing.

[0009] A keypad is mounted on the base, and the pivot of the display mounting bracket engages with the keypad.

[0010] As can be seen from the foregoing, the present invention mainly achieves the technical effect of preventing the multi-functional knob from shaking by engaging the shaft of the display mounting base with the bushing of the base, and by engaging the display mounting base with the knob through the bearing. Attached Figure Description

[0011] Other aspects and advantages of this invention will be discovered after studying the detailed description in conjunction with the following accompanying drawings:

[0012] Figure 1A This is an exploded view of the existing technology.

[0013] Figure 1B This is a combined cross-sectional view of existing technologies.

[0014] Figure 1C This is a partial schematic diagram of the prior art.

[0015] Figure 2A This is an exploded view of the first embodiment of the present invention.

[0016] Figure 2B This is a combined sectional view of the first embodiment of the present utility model.

[0017] Figure 2C This is a partial assembly diagram of the first embodiment of the present invention.

[0018] Figure 3A This is a schematic diagram of the display mounting base according to the first embodiment of the present invention.

[0019] Figure 3B This is a schematic diagram of the display mounting base according to the first embodiment of the present invention from another perspective.

[0020] Figure 4 This is a schematic diagram of the display module and the display mounting base combined according to the first embodiment of this utility model.

[0021] Figure 5A This is a schematic diagram of the bearing according to the first embodiment of the present invention.

[0022] Figure 5B This is a schematic diagram of the bearing according to the first embodiment of the present invention.

[0023] Figure 6A This is a schematic diagram of the keypad of the first embodiment of this utility model at different angles.

[0024] Figure 6B This is a schematic diagram of the keypad of the first embodiment of this utility model at different angles.

[0025] Figure 6C This is a schematic diagram of the keypad of the first embodiment of this utility model at different angles.

[0026] Figure 6D This is a schematic diagram of the keypad of the first embodiment of this utility model at different angles.

[0027] Figure 6E This is a schematic diagram of the keypad of the first embodiment of this utility model at different angles.

[0028] Figure 6F This is a schematic diagram of the keypad of the first embodiment of this utility model at different angles.

[0029] Figure 7A This is a schematic diagram showing the base and display fixing seat combined at different angles according to the first embodiment of this utility model.

[0030] Figure 7B This is a schematic diagram showing the base and display fixing seat combined at different angles according to the first embodiment of this utility model.

[0031] Figure 7C This is a schematic diagram showing the base and display fixing seat combined at different angles according to the first embodiment of this utility model.

[0032] Figure 8A This is a schematic diagram of the knob at different angles according to the first embodiment of this utility model.

[0033] Figure 8B This is a schematic diagram of the knob at different angles according to the first embodiment of this utility model.

[0034] Figure 8C This is a schematic diagram of the knob at different angles according to the first embodiment of this utility model.

[0035] Figure 9A This is a schematic diagram of the first embodiment of the present invention.

[0036] Figure 9B This is a schematic diagram of the first embodiment of the present invention.

[0037] Figure 9C This is a schematic diagram of the first embodiment of the present invention.

[0038] Figure 10A This is a schematic diagram showing the mounting bracket, base, and knob.

[0039] Figure 10B This is a schematic diagram showing the mounting bracket, base, and knob.

[0040] Figure 11A This is a schematic diagram of the display fixing base at different angles according to the second embodiment of this utility model.

[0041] Figure 11B This is a schematic diagram of the display fixing base at different angles according to the second embodiment of this utility model.

[0042] Figure 12 This is a schematic diagram of the display module and display mounting base combined according to the second embodiment of this utility model.

[0043] Figure 13A This is a schematic diagram of the bearing according to the second embodiment of the present invention.

[0044] Figure 13B This is a schematic diagram of the bearing according to the second embodiment of the present invention.

[0045] Figure 14A This is a schematic diagram of the keypad at different angles according to the second embodiment of this utility model.

[0046] Figure 14B This is a schematic diagram of the keypad at different angles according to the second embodiment of this utility model.

[0047] Figure 14C This is a schematic diagram of the keypad at different angles according to the second embodiment of this utility model.

[0048] Figure 14D This is a schematic diagram of the keypad at different angles according to the second embodiment of this utility model.

[0049] Figure 14E This is a schematic diagram of the keypad at different angles according to the second embodiment of this utility model.

[0050] Figure 14F This is a schematic diagram of the keypad at different angles according to the second embodiment of this utility model.

[0051] Figure 15A This is a schematic diagram of the base and display fixing seat combined at different angles according to the second embodiment of this utility model.

[0052] Figure 15B This is a schematic diagram of the base and display fixing seat combined at different angles according to the second embodiment of this utility model.

[0053] Figure 15C This is a schematic diagram of the base and display fixing seat at different angles in the second embodiment of this utility model.

[0054] Figure 16A This is a schematic diagram of the knob at different angles according to the second embodiment of this utility model.

[0055] Figure 16B This is a schematic diagram of the knob at different angles according to the second embodiment of this utility model.

[0056] Figure 16C This is a schematic diagram of the knob at different angles according to the second embodiment of this utility model.

[0057] Figure 17A This is a schematic diagram of the second embodiment of the present invention.

[0058] Figure 17B This is a schematic diagram of the second embodiment of the present invention.

[0059] Figure 17C This is a schematic diagram of the second embodiment of the present invention.

[0060] Explanation of reference numerals in the attached figures

[0061] Display mount 1

[0062] Shaft 11

[0063] Coarse diameter region 111

[0064] Narrow diameter area 112

[0065] Top seat 12

[0066] Long through groove 121

[0067] First hook 13

[0068] Positioning rib 14

[0069] 15 ring-shaped protrusions

[0070] Base 2

[0071] Bushing 21

[0072] Bottom groove 22

[0073] Guide rib 221

[0074] Line Channel 23

[0075] Bushing opening 24

[0076] Longitudinal ribs 25

[0077] Knob 3

[0078] First body segment 31

[0079] Circular Wall 311

[0080] Inner side 311A

[0081] Upper ring wall 3111

[0082] Lower ring wall 3112

[0083] Relay Ring 312

[0084] Second body segment 32

[0085] bevel gear 33

[0086] Raster 34

[0087] Second hook 35

[0088] Display Module 4

[0089] Bearing 5

[0090] Outer Ring 51

[0091] Inner Ring Road 52

[0092] Keypad 6

[0093] Groove 61

[0094] Elongated groove 62

[0095] Through hole 621

[0096] Circular bump 63

[0097] Screw 7

[0098] Rubber button 8

[0099] Conductive layer 81

[0100] Circuit board 9

[0101] Conductive circuit 91

[0102] Axial X

[0103] Upper Space R1

[0104] Display mounting bracket 100

[0105] Double rib 110

[0106] Some bases 200

[0107] Guide trench 220

[0108] Knob 300 Detailed Implementation

[0109] This utility model provides a multifunctional knob device. Please refer to [reference needed]. Figures 2A-2C ,include:

[0110] A display mounting bracket 1, a base 2, and a knob 3;

[0111] The display mounting base 1 has a shaft post 11, which is located in the lower half of the display mounting base 1;

[0112] The center of the base 2 is a bushing 21. The shaft 11 of the display fixing seat 1 is inserted into the middle of the base 2. The shaft 11 extends into the bushing 21. The dimensions of the shaft 11 and the bushing 21 are matched.

[0113] The knob 3 is fitted over the base 2. The display mounting base 1 and the knob 3 are connected by a bearing 5, allowing the knob 3 to rotate around the display mounting base 1. The shaft 11 of the display mounting base 1 can slide within the bushing 21 of the base 2, so that the display mounting base 1 can slide relative to the base 2 along an axial direction X. This can take into account the tolerance requirements of clearance fit and reduce the amplitude of wobble.

[0114] like Figure 3A , Figure 3BAs shown, the display mounting base 1 also has a top seat 12 connected to the shaft 11. One end of the shaft 11 is connected to the top seat 12. The top seat 12 has an elongated through slot 121 for the wiring of a display module 4 to pass through.

[0115] Please refer to Figure 3B The display mounting base 1 also has three first hooks 13 located in the middle. These first hooks 13 are connected to the top base 12. These first hooks 13 and the shaft 11 are connected to the same side of the top base 12. The shaft 11 is located between these first hooks 13.

[0116] Please refer to Figure 3B The bottom of the shaft column 11 has two positioning ribs 14, which are located on the end face of the shaft column 11 that connects to the other end of the top seat 12.

[0117] like Figure 4 As shown, the first embodiment of this utility model further includes the display module 4, which is combined with the display mounting base 1. The display module 4 is combined with the top seat 12 on the other side of the shaft 11. The display module 4 may have a thicker thickness, which is not limited here, nor is the way it is combined with the display mounting base 1.

[0118] like Figure 5A , 5B As shown, in the first embodiment of this utility model, the bearing 5 includes an outer ring 51 and an inner ring 52. There are multiple stainless steel balls between the outer ring 51 and the inner ring 52, allowing the outer ring 51 and the inner ring 52 to rotate relative to each other. The three first hooks 13 of the display fixing seat 1 are engaged with the inner ring 52, so that the first hooks 13 hold the bearing 5.

[0119] like Figures 6A-6B As shown, the first embodiment of this utility model further includes a button plate 6. The edge of the button plate 6 has two grooves 61. One side of the button plate 6 has an elongated groove 62. The center of the elongated groove 62 has a through hole 621 that penetrates the button plate 6. The other side of the button plate 6 with the elongated groove 62 has two circular protrusions 63.

[0120] like Figure 6C As shown, the base 2 has a bottom groove 22 at one end that is farther away from the top seat 12. The button plate 6 is inserted into the bottom groove 22 of the base 2 from below. The side wall around the bottom groove 22 has two guide ribs 221. The two guide ribs 221 are respectively embedded in the two grooves 61. The two grooves 61 and the two guide ribs 221 engage, so that the button plate 6 cannot rotate inside the base 2, but can only slide up and down in a limited manner along the guide ribs 221 in the axial direction X.

[0121] like Figure 6D As shown, in the first embodiment of this utility model, the display fixing base 1 and the keypad 6 are connected by a screw 7. The screw 7 passes through the through hole 621 and is locked in the shaft post 11. The two positioning ribs 14 of the display fixing base 1 are inserted into the elongated groove 62 of the keypad 6. Since the keypad 6 cannot rotate, the display fixing base 1 also cannot rotate.

[0122] like Figure 6E , Figure 6F As shown, the two circular protrusions 63 on the keypad 6 contact the two rubber buttons 8 below. The rubber buttons 8 provide a rebound force. When the user presses the display module 4, the pressing force is transmitted through the display mounting base 1 and the keypad 6 to the two rubber buttons 8 below. A conductive layer 81 of the rubber button 8 contacts two conductive lines 91 on the circuit board 9 to conduct the circuit. After the user releases his hand, the rebound force of the rubber button 8 causes the keypad 6, the display mounting base 1, and the display module 4 to return to their original positions, and the circuit returns to the open circuit state.

[0123] like Figures 7A-7C As shown, one end of the shaft 11 of the display mounting base 1, which is connected to the top seat 12, is partially exposed outside the bushing 21 of the base 2. The shaft 11 of the display mounting base 1 can slide up and down inside the bushing 21 of the base 2. When the user applies pressure to the upper surface of the display module 4, the display module 4, the display mounting base 1, and the bearing 5 all slide down together. The combination of the button plate 6 and the display mounting base 1 prevents the display mounting base 1 from rotating inside the base 2 and also prevents the display mounting base 1 from being pulled out of the base 2. It can only slide up and down to a limited extent in the axial direction X.

[0124] like Figure 8A , Figure 8B , Figure 9A , Figure 9BAs shown, this is a knob 3 according to the first embodiment of the present invention. The knob 3 has a first body segment 31 and a second body segment 32, both of which are cylindrical. The outer diameter of the first body segment 31 is larger than the outer diameter of the second body segment 32. The first body segment 31 has an annular wall 311 and a relay ring portion 312. The annular wall 311 extends along the axial direction X and has an inner surface 311A. The relay ring portion 312 is annular and is connected to the inner surface 311A ​​circumferentially. One side of the relay ring portion 312 is connected to the inner surface 311A, and the other side of the relay ring portion 312 is connected to the second body segment 32. Part 312 divides the ring wall 311 into an upper ring wall 3111 and a lower ring wall 3112. The upper ring wall 3111 surrounds and forms an upper space R1. The top seat 12 is located in the upper space R1. The side of the relay ring part 312 facing the upper space R1 has a bevel gear 33. The structure of the bevel gear 33 is used to match the spring plate (not shown) installed on the display mounting seat 1. The bevel gear 33 is used to provide a tactile feel of intermittent rotation. The second body 32 has a grating 34 at the other end of the relay ring part 312. The grating 34 has a multi-tooth structure. The grating 34 is used to match an optical encoder to determine the rotation angle and direction of the knob, such as an incremental encoder of a dual channel transmissive optical sensor.

[0125] Please refer to Figure 8C The part of the knob 3 that comes into contact with the user's fingers can be fitted with an outer rotating wheel (not shown) with a non-slip texture.

[0126] Please refer to Figures 9A to 9C , Figure 10B The three first hooks 13 in the middle of the display fixing base 1 hold the inner ring 52 of the bearing 5, and the knob 3 has a plurality of second hooks 35 inside that hold the outer ring 51 of the bearing 5. In this embodiment, the second hooks 35 are located on the side of the relay ring 312 that connects to the second body section 32. The second hooks 35 are locked on the outer ring 51. The first hooks 13 of the display fixing base 1 and the second hooks 35 of the knob 3 both hold the bearing 5, allowing the knob 3 to rotate around the display fixing base 1. The shaft 11 of the display fixing base 1 can slide up and down in the bushing 21 of the base 2.

[0127] Please refer to Figure 6E , Figures 9A to 9CThe base 2 also has at least one wiring channel 23, which runs through the base 2 and is located around the bushing 21. The wiring of the display module 4 passes through the elongated through slot 121 of the display mounting base 1 and then through the wiring channel 23 of the base 2 to the circuit board 9 below. When the user applies pressure to the upper surface of the display module 4, the display module 4, the display mounting base 1, the button plate 6, the bearing 5 and the knob 3 all slide down together, allowing the button plate 6 to press the rubber button 8. When the user rotates the knob 3, only the knob 3 and the outer ring 51 of the bearing 5 rotate together, allowing the grating 34 at the bottom of the knob 3 to move relative to the optical encoder.

[0128] To further improve the swaying issue, the following three design features can be added. Please refer to the following: Figure 10A , 10B :

[0129] Firstly, in a preferred embodiment, the outer peripheral surface of the top seat 12 has an annular protrusion 15, which is located in the gap between the display fixing seat 1 and the knob 3. However, it is not limited to this. The annular protrusion 15 can also be located on the inner surface of the upper ring wall 3111 of the knob 3, so that the display fixing seat 1 and the knob 3 can be joined by the annular protrusion 15, thereby reducing the shaking between the display fixing seat 1 and the knob 3.

[0130] Secondly, in a preferred embodiment, the shaft 11 of the display mounting base 1 is designed to be thicker at the top and thinner at the bottom. The shaft 11 of the display mounting base 1 includes a thicker diameter area 111 and a thinner diameter area 112 connected together. The thicker diameter area 111 is closer to the top seat 12 than the thinner diameter area 112. The thicker diameter area 111 is shorter and the thinner diameter area 112 is longer. The thicker diameter area 111 engages with the top end of the bushing 21 of the base 2. The bottom end of the bushing 21 has a bushing opening 24 with a reduced inner diameter. The bushing opening 24 is located at the end of the bushing 21 away from the top seat 12. The bushing opening 24 engages with the thinner diameter area 112 to reduce the shaking between the display mounting base 1 and the base 2.

[0131] Thirdly, in a preferred embodiment, at least three longitudinal ribs 25 extending along the axial direction X are provided between the outer surface of the lower half of the base 2 and the inner surface of the lower half of the knob 3. The longitudinal ribs 25 can be used on the outer surface of the base 2 or the inner surface of the second body segment 32 of the knob 3 to allow the base 2 and the knob 3 to be joined by the longitudinal ribs 25, thereby reducing the shaking between the knob 3 and the base 2.

[0132] like Figure 11A , Figure 11BThe diagram shows a second embodiment of the present invention, specifically a display mounting base 1 at different angles. The outer surface of the top seat 12 of the display mounting base 1 has an annular protrusion 15. The top seat 12 has an elongated through groove 121 inside for the circuit of the display module 4 to pass through. The top seat 12 also has three first hooks 13 in the middle. These first hooks 13 are connected to the top seat 12. These first hooks 13 and the shaft 11 are connected to the same side of the top seat 12. The shaft 11 is located between the first hooks 13. The shaft 11 includes a connected coarse diameter area 111 and a fine diameter area 112. The coarse diameter area 111 is closer to the top seat 12 than the fine diameter area 112. The coarse diameter area 111 is shorter and the fine diameter area 112 is longer. The bottom of the shaft 11 has two positioning ribs 14. These two positioning ribs 14 are located on the end face of the shaft 11 connected to the other end of the top seat 12.

[0133] like Figure 12 The diagram shown is a schematic of the display module 4 and the display mounting base 1 combined according to the second embodiment of the present invention. The display module 4 may have a relatively thick thickness, which is not limited here, nor is the method of combination with the display mounting base 1 limited.

[0134] like Figure 13A The diagram shown is a schematic diagram of the bearing 5 of the second embodiment of the present invention. The bearing 5 is composed of an outer ring 51 and an inner ring 52. There are multiple stainless steel balls between the outer ring 51 and the inner ring 52, allowing the outer ring 51 and the inner ring 52 to rotate relative to each other.

[0135] like Figure 13B The diagram shown is a schematic of the engagement of the display fixing seat 1 and the bearing 5 in the second embodiment of the present invention. The three first hooks 13 of the display fixing seat 1 hold the inner ring 52 of the bearing 5.

[0136] like Figure 14A , Figure 14B The diagram shown is a schematic diagram of the keypad 6 at different angles in the second embodiment of the present invention. The edge of the keypad 6 has two grooves 61, one side of the keypad 6 has an elongated groove 62, the center of the elongated groove 62 has a through hole 621, the through hole 621 penetrates the keypad 6, and the other side of the keypad 6 has two circular protrusions 63.

[0137] like Figure 14C As shown, the base 2 has a bottom groove 22 at one end that is farther away from the top seat 12. The button plate 6 is inserted into the bottom groove 22 of the base 2 from below. The side wall around the bottom groove 22 has two guide ribs 221. The two guide ribs 221 are respectively embedded in the two grooves 61. The two grooves 61 and the two guide ribs 221 engage, so that the button plate 6 cannot rotate inside the base 2. The button plate 6 can only slide up and down in a limited manner along the guide ribs 221 in the axial direction X.

[0138] like Figure 14D As shown, in the second embodiment of this utility model, the display fixing base 1 and the keypad 6 are connected by screws 7. The screws 7 are inserted through the through hole 621 and locked in the shaft post 11. The two positioning ribs 14 of the display fixing base 1 are inserted into the elongated groove 62 of the keypad 6. Since the keypad 6 cannot rotate, the display fixing base 1 also cannot rotate.

[0139] like Figure 14E , Figure 14F As shown, the two circular protrusions 63 on the keypad 6 contact the two rubber buttons 8 below. The rubber buttons 8 provide a rebound force. When the user presses the display module 4, the pressing force is transmitted through the display mounting base 1 and the keypad 6 to the two rubber buttons 8 below. The conductive layer 81 of the rubber buttons 8 contacts the two conductive lines 91 on the circuit board 9 to conduct the circuit. After the user releases his hand, the rebound force of the rubber buttons 8 causes the keypad 6, the display mounting base 1, and the display module 4 to return to their original positions, and the circuit returns to the open circuit state.

[0140] like Figure 15A , Figure 15B The diagram shown illustrates different angles at which the base 2 and the display mounting base 1 are combined according to the second embodiment of this utility model. The lower half of the base 2 is provided with eight longitudinal ribs 25 extending along the axial direction X. Figure 15C For along Figure 15A The 15C-15C cross-sectional diagram shows that the large diameter area 111 at the top of the column 11 of the display mounting base 1 is partially exposed outside the bushing 21 of the base 2. The bottom outlet of the bushing 21 of the base 2 has a bushing opening 24 with a reduced inner diameter. The inner diameter of the bushing opening 24 is reduced to match the small diameter area 112 of the column 11. The column 11 of the display mounting base 1 can slide up and down inside the bushing 21 of the base 2. When the user applies pressure to the upper surface of the display module 4, the display module 4, the display mounting base 1, and the bearing 5 all slide down together. The combination of the button plate 6 and the display mounting base 1 prevents the display mounting base 1 from rotating inside the base 2 and also prevents the display mounting base 1 from being pulled out of the base 2. It can only slide up and down to a limited extent in the axial direction X.

[0141] like Figure 16A , Figure 16B , Figure 17B , Figure 17CThe diagram shown is a schematic representation of the knob 3 at different angles according to the second embodiment of this utility model. The knob 3 has a first body segment 31 and a second body segment 32, both of which are cylindrical. The outer diameter of the first body segment 31 is larger than the outer diameter of the second body segment 32. The first body segment 31 has an annular wall 311 and a relay ring portion 312. The annular wall 311 extends along the axial direction X and has an inner surface 311A. The relay ring portion 312 is annular and is connected to the inner surface 311A ​​circumferentially. One side of the relay ring portion 312 is connected to the inner surface 311A, and the other side of the relay ring portion 312 is connected to the second body segment 32. Part 312 divides the ring wall 311 into an upper ring wall 3111 and a lower ring wall 3112. The upper ring wall 3111 surrounds and forms an upper space R1. The top seat 12 is located in the upper space R1. The side of the relay ring part 312 facing the upper space R1 has a bevel gear 33. The structure of the bevel gear 33 is used to match the spring plate (not shown) installed on the display mounting seat 1. The bevel gear 33 is used to provide a tactile feel of intermittent rotation. The second body 32 connects to the other end of the relay ring part 312 and has a grating 34. The grating 34 has a multi-tooth structure. The grating 34 is used to match an optical encoder to determine the rotation angle and direction of the knob, such as an incremental encoder of a dual-channel transmissive optical sensor.

[0142] Figure 16C This is a schematic diagram showing the knob 3 combined with the display mounting base 1 and the base 2. The part of the knob 3 that comes into contact with the user's fingers can be fitted with an outer rotating wheel (not shown) with anti-slip texture.

[0143] like Figure 17A The diagram shown is a schematic representation of the second embodiment of this utility model. Figure 17B For along Figure 17A Schematic diagram of the 17B-17B cross section. Figure 17C For along Figure 17A A schematic diagram of the 17C-17C cross section.

[0144] The three first hooks 13 of the display mounting base 1 are engaged with the inner ring 52. The knob 3 has multiple second hooks 35 inside, which are engaged with the outer ring 51 to hold the outer ring 51 of the bearing 5. The first hooks 13 of the display mounting base 1 and the second hooks 35 of the knob 3 both engage the bearing 5, allowing the knob 3 to rotate around the display mounting base 1. The annular protrusion 15 of the display mounting base 1 and the longitudinal ribs 25 of the base 2 can reduce the shaking of the knob 3, and the small contact area does not increase resistance. The shaft 11 of the display mounting base 1 slides up and down within the bushing 21 of the base 2. The coarse diameter section 111 of the shaft 11 of the display mounting base 1 engages with the bushing 21 of the base 2. The narrow diameter area 112 of the column 11 engages with the bushing opening 24 at the bottom outlet of the bushing 21 of the base 2, which has a reduced inner diameter. This reduces the shaking of the display mounting base 1 and has a small contact area, thus not increasing resistance. The wiring of the display module 4 passes through the elongated through slot 121 of the display mounting base 1 and then through the wiring channel 23 of the base 2 to the circuit board 9 below. When the user applies pressure to the upper surface of the display module 4, the display module 4, the display mounting base 1, the button plate 6, the bearing 5, and the knob 3 all slide down together, allowing the button plate 6 to press the rubber button 8. When the user rotates the knob 3, only the knob 3 and the outer ring 51 of the bearing 5 rotate together, causing the grating 34 at the bottom of the knob 3 to move relative to the optical encoder.

[0145] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-functional knob device, characterized in that: Include: A display mounting bracket, a knob, a base, and a display module; The display module is fixed on the display mounting base; The display mounting base has a shaft post, and the base has a bushing; the shaft post engages with the bushing. The display mounting bracket can slide relative to the base along the axial direction of the shaft column; A bearing is provided between the display mounting base and the knob, and the knob rotates around the display mounting base via the bearing; A button panel is located at the bottom of the base, and the shaft of the display mounting base engages with the button panel.

2. The multi-functional knob device as described in claim 1, characterized in that: The keypad has at least one groove on its edge, and one side of the keypad has an elongated groove. The base has a bottom groove, and the sidewall of the bottom groove has at least one guide rib. The groove of the keypad engages with the guide rib of the base. The bottom of the shaft of the display mounting base has at least one positioning rib, and the positioning rib engages with the elongated groove.

3. The multifunctional knob device as described in claim 2, characterized in that: The button panel has at least one circular protrusion on the other side of the elongated groove, which contacts at least one rubber button below.

4. The multi-functional knob device as described in claim 3, characterized in that: The shaft of the display mounting bracket includes a connected coarse diameter region and a fine diameter region. One end of the bushing has a bushing opening with a reduced inner diameter. The coarse diameter region engages with the other end of the bushing with the bushing opening, and the fine diameter region engages with the bushing opening.

5. The multi-functional knob device as described in claim 1, characterized in that: The display mounting base and the knob have an annular protrusion located on the surface of the display mounting base facing the knob or on the surface of the knob facing the display mounting base.

6. The multi-functional knob device as described in claim 1, characterized in that: The knob has at least three longitudinal ribs between it and the base, and these longitudinal ribs are disposed on the surface of the base facing the knob or on the surface of the knob facing the base.

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