Knob structure

Abstract

The utility model provides a knob structure, which is characterized in that a motor driving circuit printed board is arranged in a base shell, and the lower edge of a rotary shell is arranged in a chute of the base shell; a screen assembly supporting piece of a T-shaped structure, a screen driving circuit printed board and a display screen are arranged in the rotary shell, and the screen driving circuit printed board and the display screen are sequentially arranged. A supporting shaft of the screen assembly supporting piece is sleeved with a supporting roller bearing and a plane thrust bearing, a first magnet and a second magnet are arranged between the supporting roller bearing and the plane thrust bearing, and a magnetic induction line formed by the first magnet and the second magnet penetrates through a Hall sensor above. The supporting shaft is further sleeved with a servo motor, a motor mounting block is fixed to the lower portion of the servo motor, and the outer side of the motor mounting block is sleeved with a roller bearing. The rotating angle measuring device is simple and stable in structure, capable of accurately measuring the rotating angle, small and exquisite in appearance and capable of having key and display functions.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of mechanical operating devices, in particular to a knob structure. Background Art

[0002] The knob is a commonly used operating element, widely used in various mechanical and electronic equipment. It is mainly based on mechanical transmission and connection mechanisms, and usually consists of a rotating shaft and a rotating part fixed on the shaft. Different signs or indications are engraved on the rotating part to indicate the state or operation during the rotation process. When the knob rotates, the rotating shaft can transmit rotational power through the connection with other mechanical parts, and convert the rotation into corresponding functions or actions. As a simple and effective operating element, the knob plays an important role in mechanical and electronic equipment. The wide range of applications, diverse material choices and constantly innovative special functions make the knob an indispensable part of modern industry and life.

[0003] Existing knob devices have single functions, such as no display function. In addition, the rotation angle of the knob cannot generally be obtained directly, or it can be obtained through certain additional structures, but the additional structures are often complex structures with high investment costs. There are also some relatively simple structures, but the accuracy of obtaining the angle is not high. For example, a dial is set on the knob, and a pointer that matches it is set inside or outside the knob. As the knob rotates, the pointer will move and point to a specific position on the dial, so that the rotation angle can be directly read. This method is simple and intuitive, but the accuracy is limited by the scale of the dial and the accuracy of the pointer. How to make the knob meet these functional requirements is an urgent problem to be solved. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a knob structure which has a simple and stable structure, can accurately measure the rotation angle, has a small shape, and can also have key and display functions.

[0005] In order to solve the above technical problems, the utility model provides a knob structure, including: a display screen, a screen drive circuit printed board, a screen component support, a supporting roller bearing, a first magnet, a second magnet, a planar thrust bearing, a servo motor, a motor mounting block, a roller bearing, a rotating shell, a base shell, a motor drive circuit printed board and a bottom cover; the bottom of the base shell is connected to the bottom cover, and the motor drive circuit printed board is arranged inside; the lower edge of the rotating shell is placed in the slide groove of the base shell; the rotating shell is provided with a T-shaped screen component support, and the screen component support is connected to the bottom cover. A screen driving circuit printed circuit board and the display screen are arranged on it in sequence; the screen assembly support comprises a support shaft, a supporting roller bearing is sleeved on the support shaft, a plane thrust bearing is sleeved on the outer side of the supporting roller bearing, a first magnet and a second magnet are arranged between the outer side of the supporting roller bearing and the plane thrust bearing, and the first magnet has N level upward and the second magnet has S level upward, and the magnetic flux lines formed by the first magnet and the second magnet pass through the upper Hall sensor; a servo motor is also sleeved on the support shaft, a motor mounting block is fixed under the servo motor, and a roller bearing is sleeved on the outer side of the motor mounting block.

[0006] Furthermore, a transparent curved glass is arranged above the display screen.

[0007] Furthermore, a light guide ring is arranged on the outer side of the display screen and the screen driving circuit printed board.

[0008] Furthermore, it also includes a patch nut, a key circuit printed board, a spring plunger and a tea-axis mechanical button; the key circuit printed board is installed inside the base shell, and the key circuit printed board and the motor drive circuit printed board are connected through a patch nut; the bottom of the base shell is connected to a bottom cover, including: the bottom of the base shell is connected to the bottom cover through a spring plunger; a tea-axis mechanical button is arranged on the upper surface of the bottom cover.

[0009] Furthermore, it also includes screws, which fix the bottom cover to the bottom of the base shell.

[0010] Furthermore, the outer dimensions of the knob structure are 75 mm in length×75 mm in width×73 mm in height.

[0011] Furthermore, the diameter of the rotating shell of the knob structure is 50 mm and the height is 50 mm.

[0012] Furthermore, the number of the patch nuts is 4, and / or the number of the spring plungers is 4.

[0013] Compared with the prior art, the utility model has the following beneficial effects: simple and stable structure, accurate measurement of the rotation angle, compact appearance, and key and display functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the present invention. They are included and constitute a part of the present invention. The accompanying drawings illustrate embodiments of the present invention and together with the specification serve to explain the principles of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a three-dimensional schematic diagram of a knob structure of an embodiment of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of a knob structure of an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the rotating part of the knob structure of an embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the bottom structure of the knob structure of an embodiment of the utility model.

[0019] The numbers in the figure are:

[0020] 1-perspective curved glass, 2-display screen, 3-light guide ring, 4-screen drive circuit printed board, 5-screen assembly support, 6-support roller bearing, 7-first magnet, 8-second magnet, 9-plane thrust bearing, 10-servo motor, 11-motor mounting block, 12-roller bearing, 13-rotating housing, 14-base housing, 15-motor drive circuit printed board, 16-chip nut, 17-button circuit printed board, 18-spring plunger, 19-bottom cover, 20-tea axis mechanical button, 21-screw. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present utility model. For ordinary technicians in this field, the present utility model can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0022] For ease of description, spatially relative terms such as "on", "above", "on the upper surface of", "upper", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figures. It should be understood that the spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures.

[0023] refer to Figure 1~Figure 4 As shown, a knob structure provided in this embodiment includes a display screen 2, a screen drive circuit printed board 4, a screen assembly support 5, a supporting roller bearing 6, a first magnet 7, a second magnet 8, a planar thrust bearing 9, a servo motor 10, a motor mounting block 11, a roller bearing 12, a rotating shell 13, a base shell 14, a motor drive circuit printed board 15 and a bottom cover 19.

[0024] Among them, a bottom cover 19 is connected to the bottom of the base shell 14, and a motor drive circuit printed circuit board 15 is arranged inside; the lower edge of the rotating shell 13 is placed in the slide groove of the base shell 14; a T-shaped screen component support 5 is arranged inside the rotating shell 13, and a screen drive circuit printed circuit board 4 and a display screen 2 are arranged in sequence on the screen component support 5; the screen component support 5 includes a supporting shaft, on which a supporting roller bearing 6 is sleeved, and a plane thrust bearing 9 is sleeved on the outside of the supporting roller bearing 6, and a first magnet 7 and a second magnet 8 are arranged between the outside of the supporting roller bearing 6 and the plane thrust bearing 9, and the N level of the first magnet 7 is upward, and the S level of the second magnet 8 is upward, and the magnetic flux lines formed by the first magnet 7 and the second magnet 8 pass through the upper Hall sensor, and the Hall sensor is generally built into the structure.

[0025] In addition, a servo motor 10 is sleeved on the support shaft, a motor mounting block 11 is fixed below the servo motor 10 , and a roller bearing 12 is sleeved on the outer side of the motor mounting block 11 .

[0026] The knob structure of this embodiment can achieve 360° infinite rotation. Inside the shell of the rotating shell 13, there are two permanent magnets, namely the first magnet 7 and the second magnet 8. The installation method of these two permanent magnets is that one permanent magnet is N-level upward and the other permanent magnet is S-level upward. The magnetic flux lines formed by the two permanent magnets will pass through the upper Hall sensor, thereby determining the rotation angle of the rotating shell 13. For example, if the N level of the first magnet 7 is upward, the S level of the second magnet 8 is upward, and vice versa.

[0027] In this embodiment, the rotating housing 13, the base housing 13 and / or the screen assembly support 5 and other components can be made of metal, and these metal housings can be made using CNC numerical control processing. The advantages of this production method are that the housing is easy to make, the processing accuracy and the consistent performance of the product are guaranteed, and the failure rate of mature technology is low, and problems can be quickly solved after they occur, thereby ensuring product quality.

[0028] In one implementation, a perspective curved glass 1 is disposed above the display screen 2. The perspective curved glass 1 is made of transparent glass, and its high light transmittance allows the light source or pattern below to be clearly displayed, thereby enhancing the visual effect and user experience. In addition, the glass material is often made of high-strength materials such as tempered glass, which has high hardness and impact resistance, and can resist a certain degree of external impact and wear.

[0029] In one implementation, a light guide ring 3 is disposed outside the display screen 2 and the screen driving circuit printed board 4 .

[0030] In some cases, problems with the backlight source or light guide plate may lead to uneven light distribution, thereby forming an aperture at the edge or specific area of ​​the display screen 2. Such an aperture usually appears as an area with too high or too low brightness, affecting the display effect. Therefore, in this embodiment, a light guide ring 3 is provided on the outer side of the display screen 2 and the screen drive circuit printed board 4 to avoid the occurrence of an adverse aperture effect.

[0031] In one implementation, the knob structure may further include a patch nut 16, a key circuit printed board 17, a spring plunger 18, and a tea axis mechanical button 20. The key circuit printed board 17 is installed inside the base housing 14, and the key circuit printed board 17 is connected to the motor drive circuit printed board 15 through the patch nut 16. The bottom of the base housing 14 is connected to a bottom cover 19, including: the bottom of the base housing 14 is connected to the bottom cover 19 through a spring plunger 18; and the upper surface of the bottom cover 19 is provided with a tea axis mechanical button 20.

[0032] In this embodiment, when the pressing operation is performed, the pressing force is transmitted to the spring plunger 18 and the tea axis mechanical button 20, and the spring plunger 18 and the tea axis mechanical button 20 will be compressed at the same time. When the pressing stroke of the tea axis mechanical button 20 reaches 2 mm, the button is triggered successfully. The spring plunger 18 and the tea axis mechanical button 20 can continue to be pressed to a stroke of 3.0 mm, so that the bottom cover 19 contacts the support plane.

[0033] In one implementation, the knob structure further includes a screw 21 , and the screw 21 fixes the bottom cover 19 to the bottom of the base housing 14 .

[0034] In this embodiment, the screw 21 may be a cross-slot countersunk M3*30, and the mounting screw hole in the supporting plane of the bottom cover 19 is a blind hole with a depth of at most 6.0.

[0035] In one implementation, the outer dimensions of the knob structure are length (L) 75 mm × width (W) 75 mm × height (H) 73 mm. Furthermore, the diameter of the rotating housing 13 of the knob structure is 50 mm and the height is 50 mm. Of course, the outer dimensions of the knob structure and the size of the rotating housing 13 of the knob structure can also be comprehensively considered according to different adaptability situations, and this embodiment does not impose specific restrictions on them.

[0036] In one implementation, the number of the patch nuts 16 is 4, and / or the number of the spring plungers 18 is 4. It is understandable that the patch nuts 16 and the spring plungers 18 can also be comprehensively considered according to different adaptability situations, and this embodiment does not specifically limit them.

[0037] The knob structure of this embodiment is simple and stable in structure, the rotation angle can be accurately measured, the appearance is compact, and it can also have button and display functions.

[0038] For those skilled in the art, the above utility model disclosure is only used as an example and does not constitute a limitation of the utility model. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the utility model. Such modifications, improvements and amendments are suggested in the utility model, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the utility model.

[0039] Although the present invention has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present invention, and various equivalent changes or substitutions may be made without departing from the spirit of the present invention. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present invention, they will fall within the scope of the claims of the present invention.

Claims

1. A knob structure, characterized in that: include: Display screen (2), screen drive circuit printed board (4), screen assembly support (5), supporting roller bearing (6), first magnet (7), second magnet (8), planar thrust bearing (9), servo motor (10), motor mounting block (11), roller bearing (12), rotating housing (13), base housing (14), motor drive circuit printed board (15) and bottom cover (19); The bottom of the base shell (14) is connected to a bottom cover (19), and a motor drive circuit printed board (15) is arranged inside; the lower edge of the rotating shell (13) is placed in a slide groove of the base shell (14); A screen assembly support member (5) with a T-shaped structure is arranged inside the rotating housing (13), and a screen drive circuit printed board (4) and the display screen (2) are arranged in sequence on the screen assembly support member (5); The screen assembly support member (5) comprises a support shaft, a support roller bearing (6) is sleeved on the support shaft, a plane thrust bearing (9) is sleeved on the outer side of the support roller bearing (6), a first magnet (7) and a second magnet (8) are arranged between the outer side of the support roller bearing (6) and the plane thrust bearing (9), and the first magnet (7) is N-level upward, and the second magnet (8) is S-level upward, and the magnetic flux lines formed by the first magnet (7) and the second magnet (8) pass through the upper Hall sensor; A servo motor (10) is also sleeved on the support shaft, a motor mounting block (11) is fixed below the servo motor (10), and a roller bearing (12) is sleeved on the outside of the motor mounting block (11).

2. The knob structure according to claim 1, characterized in that: A transparent curved glass (1) is arranged above the display screen (2).

3. The knob structure according to claim 1, characterized in that: Light guide rings (3) are arranged on the outer sides of the display screen (2) and the screen drive circuit printed board (4).

4. The knob structure according to claim 1, characterized in that: Also includes: SMD nut (16), key circuit printed board (17), spring plunger (18) and brown axis mechanical button (20); The key circuit printed board (17) is installed inside the base housing (14), and the key circuit printed board (17) is connected to the motor drive circuit printed board (15) via a patch nut (16); The bottom of the base shell (14) is connected to a bottom cover (19), comprising: the bottom of the base shell (14) is connected to the bottom cover (19) via a spring plunger (18); and a tea-axis mechanical button (20) is provided on the upper surface of the bottom cover (19).

5. The knob structure according to claim 1, characterized in that: Also includes: Screws (21), wherein the screws (21) fix the bottom cover (19) to the bottom of the base housing (14).

6. The knob structure according to claim 1, characterized in that: The outer dimensions of the knob structure are 75 mm in length×75 mm in width×73 mm in height.

7. The knob structure according to claim 1, characterized in that: The rotating housing (13) of the knob structure has a diameter of 50 mm and a height of 50 mm.

8. The knob structure according to claim 4, characterized in that: The number of the patch nuts (16) is four, and / or the number of the spring plungers (18) is four.

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