Knob and touch screen assembly

Abstract

The invention provides a knob and a touch screen assembly, which can be used in the technical field of touch screens. The knob comprises a fixed assembly, a rotating assembly and a contact assembly. The fixing assembly comprises a base and a support, the base is detachably connected to a screen of the touch screen, and the support is arranged on the base; the rotating assembly comprises a rotating piece, and the rotating piece is rotationally arranged on the support in a sleeving mode. The contact assembly is arranged at the bottom of the rotating assembly, the contact assembly is configured to be capable of elastically making contact with the screen when rotating along with the rotating assembly, and the contact assembly is configured to be capable of forming coupling capacitance with the rotating assembly and human fingers when making contact with the screen. According to the method and the device, a user can realize blind adjustment operation on the touch screen through the knob under the condition that the user does not watch the screen, so that the operation safety and the operation efficiency of the touch screen are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of touch screens, in particular to a knob and a touch screen assembly. BACKGROUND

[0002] A touch screen is an interactive input device, and a user can directly operate on a screen through a stylus, a finger or the like to realize information input and device control without the aid of traditional keyboards, mice and other peripherals. The user can easily complete various operations through finger sliding, clicking, zooming and other gestures.

[0003] With the increasing popularity of intelligent concepts in the fields of vehicles and homes, the intelligent degree is increasingly high, and touch screens are increasingly used in related fields. However, in some use scenarios, for example, in a vehicle driving scenario, a vehicle driver often needs to simultaneously operate and adjust, such as volume, air conditioning air volume, or continuously click a screen for a long time to control the opening degree of a window or a sunroof. At this time, the vehicle driver looking at the screen while driving will distract the driver's attention, increase the driving risk, and cause accidents.

[0004] Therefore, in some scenarios, it is still necessary to implement blind operation of a touch screen. However, most existing touch screens are inconvenient for blind operation. SUMMARY

[0005] The present application provides a knob and a touch screen assembly to solve the technical problem that existing touch screens are inconvenient for blind operation.

[0006] According to a first aspect of the present application, the present application provides a knob, which includes a fixing assembly, a rotating assembly and a contact assembly.

[0007] The fixing assembly includes a base and a support, the base is detachably connected to a screen of a touch screen, and the support is arranged on the base.

[0008] The rotating assembly includes a rotating piece, and the rotating piece is rotationally sleeved on the support.

[0009] The contact assembly is arranged at the bottom of the rotating assembly, the contact assembly is configured to elastically contact the screen when the rotating assembly rotates, and the contact assembly is configured to form a coupling capacitance with the rotating assembly and a human finger when the contact assembly contacts the screen.

[0010] In a feasible implementation, a first guide groove for accommodating the contact assembly is arranged at the bottom end of the rotating piece.

[0011] The contact assembly comprises a first elastic connecting member and a conductive contact, one end of the first elastic connecting member is in abutment with the first guide slot, and the other end of the first elastic connecting member is in abutment with one end of the conductive contact.

[0012] A plurality of through holes are arranged at positions corresponding to the rotation path of the conductive contact on the base, and the through holes are used for the conductive contact to extend and contact the screen.

[0013] In an available embodiment, a first wave structure is arranged at positions corresponding to the rotation path of the conductive contact on the base, and the through holes are located at troughs of the first wave structure.

[0014] In an available embodiment, the bottom of the rotating assembly is further provided with a plurality of positioning assemblies, and the plurality of positioning assemblies are distributed around the center of the rotating assembly.

[0015] The bottom end of the rotating member is provided with a plurality of second guide slots for accommodating the positioning assemblies, the positioning assemblies comprise a second elastic connecting member and an insulating contact, one end of the second elastic connecting member is in abutment with the second guide slot, and the other end of the second elastic connecting member is in abutment with one end of the insulating contact.

[0016] A plurality of positioning slots are arranged at positions corresponding to the rotation path of the insulating contact on the base, and the positioning slots are used for the insulating contact to extend and be clamped.

[0017] In an available embodiment, a second wave structure is arranged at positions corresponding to the rotation path of the insulating contact on the base, and the positioning slots are located at troughs of the second wave structure.

[0018] In an available embodiment, the fixing assembly is provided with an axial through window.

[0019] In an available embodiment, the top end of the window is provided with a transparent cover plate.

[0020] In an available embodiment, the rotating assembly further comprises a dial, the dial is arranged at the top end of the rotating member, and a plurality of indication marks are arranged at intervals on the dial.

[0021] The top end of the support is provided with a positioning mark matched with the indication mark.

[0022] In an available embodiment, a bearing is sleeved on the support, and the rotating member is sleeved on the bearing.

[0023] According to a second aspect of the present application, the present application provides a touch screen assembly, comprising a touch screen and one or more knobs as described in any one of the first aspects.

[0024] The knob is detachably connected to the screen of the touch screen.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] The knob and the touch screen assembly provided by the present application are detachably mounted on the screen of the touch screen through the fixing assembly, and the contact assembly is rotated through the rotating assembly. Since the contact assembly is configured to be in elastic contact with the screen when rotating with the rotating assembly, and the contact assembly can form a coupling capacitor with the rotating assembly and a human finger when in contact with the screen. Therefore, in the process of twisting the rotating part of the knob by the user, the contact assembly can realize the clicking operation on the screen when in contact with the screen, so that the user can realize the blind operation of the touch screen without looking at the screen by using the knob, thereby improving the safety and operation efficiency of the touch screen operation. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0028] Figure 1 A structural schematic view of a knob provided by an embodiment of the present application;

[0029] Figure 2 A top view of the knob; Figure 1

[0030] Figure 3 A top view of the base provided by an embodiment of the present application;

[0031] Figure 4 A bottom view of the base provided by an embodiment of the present application;

[0032] Figure 5 A bottom view of the rotating part provided by an embodiment of the present application;

[0033] Figure 6 A structural schematic view of a touch screen assembly provided by an embodiment of the present application.

[0034] Explanation of reference signs:

[0035] 100 - rotating assembly;

[0036] 101 - dial;

[0037] 102 - rotating part;

[0038] 103 - bearing;

[0039] 104 - first guide groove;

[0040] ​105- second guide groove;

[0041] 106-Indicator signs;

[0042] 200-Fixed component;

[0043] 201-cover plate;

[0044] 202-window;

[0045] 203-base;

[0046] 204-support;

[0047] 205-positioning identification;

[0048] 206-through hole;

[0049] 207- positioning slot;

[0050] 300-contact assembly;

[0051] 301-first elastic connecting member;

[0052] 302-conductive contact;

[0053] 400-Location component;

[0054] 401- second elastic connecting member;

[0055] 402-insulated contacts;

[0056] 500-screw hole;

[0057] 600-screen.

[0058] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0059] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0060] Touch screen is an interactive input device, users can directly operate on the screen through a stylus, finger, etc., to achieve information input and device control, without the help of traditional keyboard, mouse and other peripherals. Users can easily complete various operations such as browsing web pages, watching videos, playing games, taking pictures, etc. through finger sliding, clicking, zooming and other gestures. Today, almost all smartphones and tablets use touch screen technology, becoming an indispensable communication and entertainment tool in people's daily life.

[0061] Because the touch screen can save space and perform more operations compared to the original conventional mechanical control structure. Therefore, as the intelligent concept of vehicles, homes and other fields becomes more and more popular, the degree of intelligence is getting higher and higher, and the use of touch screens in related fields is also increasing. However, in some use scenarios, such as in the vehicle driving scenario, the vehicle driver often needs to adjust the volume, air volume, or click the screen for a long time to control the opening degree of the window or sunroof while driving. At this time, the vehicle driver looking at the screen while driving will distract the driver's attention, increase the driving risk, and cause accidents.

[0062] Touch screen blind adjustment operation refers to the user completing parameter adjustment or function switching of the touch screen device without looking at the screen. Since the screen blind adjustment operation meets the needs of specific scenarios through non-visual interaction, it has the advantages of reducing visual distraction, improving operation safety, and replacing visual confirmation to improve operation efficiency in some use scenarios. Therefore, in some scenarios, the implementation of touch screen blind adjustment operation is still necessary. However, most existing touch screens have the problem of not being convenient for blind adjustment operation.

[0063] To solve the above technical problems, the present application provides a knob and a touch screen assembly, which allows users to perform blind adjustment operation on the touch screen without looking at the screen, improving the safety and efficiency of touch screen operation.

[0064] The technical solutions of the knob and touch screen assembly provided by the present application will be described in detail below through specific embodiments. It should be noted that the following embodiments can exist independently or be combined with each other. For the same or similar content, it may not be repeated in different embodiments.

[0065] Figure 1 A structural schematic diagram of a knob provided by an embodiment of the present application is shown in Figure 1In some embodiments, the knob comprises a fixing assembly 200, a rotating assembly 100 and a contact assembly 300; the fixing assembly 200 comprises a base 203 and a support 204, the base 203 is detachably connected to the screen 600 of the touch screen, and the support 204 is arranged on the base 203; the rotating assembly 100 comprises a rotating part 102, which is rotatably sleeved on the support 204; the contact assembly 300 is arranged at the bottom of the rotating assembly 100, and is configured to be in elastic contact with the screen 600 when the rotating assembly 100 rotates, and the contact assembly 300 is configured to form a coupling capacitor with the rotating assembly 100 and a human finger when in contact with the screen 600.

[0066] In the embodiment, the knob is detachably mounted on the screen 600 of the touch screen through the fixing assembly 200, and the contact assembly 300 is rotated through the rotating assembly 100. Since the contact assembly 300 is configured to be in elastic contact with the screen 600 when the rotating assembly 100 rotates, and the contact assembly 300 is configured to form a coupling capacitor with the rotating assembly 100 and a human finger when in contact with the screen 600. Therefore, in the process of twisting the rotating part 102 of the knob by the user, the contact assembly 300 can realize the clicking operation on the screen 600 when in contact with the screen 600, so that the user can realize the blind operation of the touch screen without looking at the screen 600 by using the knob, thereby improving the safety and operation efficiency of the touch screen.

[0067] Specifically, the contact assembly 300 can be in elastic contact with the screen 600 when the rotating assembly 100 rotates to realize the clicking operation, without the need to click the knob after twisting the knob to realize the clicking operation, so that the screen 600 can feedback the adjustment result of the knob in real time according to the clicking operation of the contact assembly 300 after the knob is twisted, without the need to increase the confirmation action, thereby further improving the operation efficiency of the touch screen.

[0068] Specifically, the existing touch screen is basically a capacitive touch screen, which is an input device based on the principle of human body capacitance sensing, and is widely used in electronic devices such as smart phones, tablet computers, self-service terminals and vehicle navigation systems. Its working principle is to realize touch operation by detecting the capacitance change formed by the human body (or conductive object) and the screen 600 surface, and has the advantages of high sensitivity, multi-point touch, good light transmission and the like. Therefore, the contact assembly 300 can form a coupling capacitor with the rotating assembly 100 and a human finger when in contact with the screen 600 to realize the clicking operation of the touch screen when the knob is rotated. In order to ensure that the contact assembly 300 can form a coupling capacitor with the rotating assembly 100 and a human finger when in contact with the screen 600, the contact assembly 300 and the rotating part 102 are made of conductive materials, and the fixing assembly 200 is made of insulating materials.

[0069] Correspondingly, when the human finger does not contact the knob, since the coupling capacitor cannot be formed, the touch control does not take effect when the hand leaves the knob.

[0070] Specifically, the base 203 is inserted and fixed with the support 204.

[0071] Referring to Figure 1 Optionally, the fixing assembly 200 is provided with an axial through window 202.

[0072] The fixing assembly 200 is provided with the axial through window 202, so that the user can see the screen 600 below the fixing assembly 200 through the window 202. Through the setting of the display content of the screen 600, for example, when the knob is used for volume adjustment, the screen 600 in the corresponding area of the window 202 can be set to display volume, air volume, radio frequency, pattern identification and other related information, or customized more interesting or provide adjustment result identification service, so that the user can more intuitively see the related content information of the knob adjustment.

[0073] Specifically, in order to facilitate the user to twist the knob, anti-skid lines can also be provided on the rotating part 102. The knob is easy to slip when it is wet, greasy or the user's hand is sweating. The anti-skid lines increase the roughness of the surface of the rotating part 102, improve the friction between the finger and the knob, ensure the stable operation, and prevent the operation from slipping. The anti-skid lines can be straight lines, wavy lines, dot-shaped protrusions, grid lines, irregular lines, etc.

[0074] Referring to Figure 1 Optionally, the top end of the window 202 is provided with a transparent cover plate 201.

[0075] The cover plate 201 can cover the window 202, so as to effectively prevent impurities and dust from falling into the window 202 without affecting the viewing of the display information of the screen 600 through the window 202.

[0076] Referring to Figure 2 Optionally, the rotating assembly 100 further comprises a dial 101, the dial 101 is arranged at the top end of the rotating part 102, and a plurality of indication marks 106 are arranged on the dial 101 in intervals; and the top end of the support 204 is provided with a positioning mark 205 matched with the indication mark 106.

[0077] The indication mark 106 is arranged on the dial 101, and the indication mark 106 on the dial 101 is matched with the positioning mark 205 arranged on the support 204, so that the indication mark 106 corresponding to the current adjustment position of the knob is indicated through the cooperation of the positioning mark 205 and the indication mark 106, and the user can intuitively obtain the specific information of the adjustment.

[0078] Specifically, the indicating mark 106 can be function information such as volume, air volume, temperature, etc., or scale information such as volume value, air volume value, temperature size, etc.

[0079] Specifically, the positioning mark 205 can be an arrow, a triangle, or other identification graphics.

[0080] Specifically, the dial 101 is fixedly connected with the support 204.

[0081] Specifically, the dial 101 can also play a decorative role, thereby further improving the appearance of the knob.

[0082] Referring to Figure 1 Optionally, the support 204 is sleeved with a bearing 103, and the bearing 103 is sleeved with the rotating member 102.

[0083] The support 204 is rotationally connected with the rotating member 102 through the bearing 103. The bearing 103 converts the traditional sliding friction into rolling friction through the rolling motion of the rolling body (such as a ball or a roller), thereby reducing the friction coefficient of the support 204 and the rotating member 102. The low-friction characteristic reduces the wear rate of the support 204 and the rotating member 102, effectively prolonging the service life of the support 204 and the rotating member 102.

[0084] Specifically, the support 204 is connected with the inner ring of the bearing 103 in interference fit, so as to sleeve the bearing 103 on the support 204. The rotating member 102 is connected with the outer ring of the bearing 103 in interference fit, so as to sleeve the rotating member 102 on the support 204.

[0085] In addition, to strengthen the firmness of the connection between the support 204 and the bearing 103 and between the rotating member 102 and the bearing 103, screw holes 500 can be arranged on the support 204, the rotating member 102, the outer ring of the bearing 103, and the inner ring of the bearing 103, so as to further fix the support 204 and the bearing 103 and the rotating member 102 and the bearing 103 through screws.

[0086] Referring to Figure 1 , Figure 3 , Figure 4 and Figure 5 In some embodiments, the rotating member 102 is provided with a first guide groove 104 for accommodating a contact assembly 300. The contact assembly 300 includes a first elastic connecting member 301 and a conductive contact 302. One end of the first elastic connecting member 301 abuts against the first guide groove 104, and the other end of the first elastic connecting member 301 abuts against one end of the conductive contact 302. A plurality of through holes 206 are arranged at positions corresponding to the rotating path of the conductive contact 302 on the base 203. The through holes 206 are used for the conductive contact 302 to extend out and contact the screen 600.

[0087] In the embodiment, since the plurality of through holes 206 are arranged on the base 203 at positions corresponding to the rotating path of the conductive contact 302, the conductive contact 302 of the contact assembly 300 is initially located in one of the through holes 206. When the rotating member 102 is rotated, the rotating member 102 moves the contact assembly 300, and the conductive contact 302 moves out of the current through hole 206. At this time, the conductive contact 302 moves into the first guide slot 104, and the first elastic connecting member 301 is compressed. When the rotating member 102 moves the contact assembly 300 to the position of the next through hole 206, the first elastic connecting member 301 rebounds, and the conductive contact 302 is pushed into the next through hole 206 by the first elastic connecting member 301, so that the conductive contact 302 extends out of the next through hole 206 and contacts the screen 600, thereby realizing the clicking operation on the screen 600.

[0088] During the continuous rotation of the rotating member 102 by the user, the conductive contact 302 continuously repeats the above-mentioned extension and movement out of the through hole 206, thereby realizing the continuous clicking on the screen 600.

[0089] Optionally, the conductive contact 302 is arranged in a structure of small at the bottom and large at the top, and the cross-sectional area of the lower part of the conductive contact 302 is smaller than the area of the through hole 206, and the cross-sectional area of the upper part of the conductive contact 302 is larger than the area of the through hole 206. In this way, when the conductive contact 302 extends into the through hole 206, the through hole 206 can block the upper part of the conductive contact 302 from extending out, thereby avoiding the conductive contact 302 from sliding out of the through hole 206.

[0090] Optionally, the end of the conductive contact 302 is arranged in a ball head shape. The arc structure of the ball head makes the conductive contact 302 more easily extend into or move out of the through hole 206.

[0091] Specifically, the first guide slot 104 can guide and limit the movement path of the conductive contact 302, so that the conductive contact 302 can smoothly extend into or move out of the through hole 206.

[0092] Specifically, the material of the conductive contact 302 is a conductive metal or a conductive silicone. The conductive silicone is a kind of high polymer composite material with both conductive property and elastomer characteristics. The conductive silicone takes silicone rubber as the base and realizes the conductive function by adding conductive fillers. The conductive silicone has both the conductive property and the flexibility, so that the conductive silicone can protect the screen 600 during clicking by using the flexibility,

[0093] Specifically, the elastic connecting member includes a spiral spring, a rubber spring, an air spring, and the like.

[0094] Specifically, the more the number of through holes 206 arranged at the positions corresponding to the rotating path of the conductive contact 302 on the base 203, the higher the adjustment accuracy of the knob. When the number of through holes 206 reaches a certain number, the analog continuous clicking approaches sliding, achieving the effect similar to stepless continuous adjustment and forming real-time feedback.

[0095] Optionally, the positions corresponding to the rotating path of the conductive contact 302 on the base 203 are arranged with a first wavy structure, and the through holes 206 are arranged at the troughs of the first wavy structure.

[0096] Optionally, the positions corresponding to the rotating path of the conductive contact 302 on the base 203 are arranged with a first wavy structure, and the through holes 206 are arranged at the troughs of the first wavy structure.

[0097] Optionally, the positions corresponding to the rotating path of the conductive contact 302 on the base 203 are arranged with a first wavy structure, and the through holes 206 are arranged at the troughs of the first wavy structure. Figure 1 、 Figure 3 and Figure 5 In some embodiments, the bottom of the rotating assembly 100 is further provided with a plurality of positioning assemblies 400, which are distributed around the center of the rotating assembly 100; the bottom end of the rotating member 102 is provided with a plurality of second guide grooves 105 for accommodating the positioning assemblies 400; the positioning assembly 400 comprises a second elastic connecting piece 401 and an insulating contact 402, one end of the second elastic connecting piece 401 abuts against the second guide groove 105, and the other end of the second elastic connecting piece 401 abuts against one end of the insulating contact 402; a plurality of positioning grooves 207 are arranged at intervals on the base 203 at positions corresponding to the rotating path of the insulating contact 402, and the positioning grooves 207 are used for the insulating contact 402 to extend into and be clamped.

[0098] In this embodiment, since a plurality of positioning grooves 207 are arranged at intervals on the base 203 at positions corresponding to the rotating path of the insulating contact 402, in the initial state, the insulating contact 402 of the positioning assembly 400 is located in one of the positioning grooves 207. In this way, when the rotating member 102 is rotated, the rotating member 102 will move the positioning assembly 400 together, and the insulating contact 402 will move out of the current positioning groove 207, at which time the insulating contact 402 moves into the second guide groove 105, causing the second elastic connecting piece 401 to compress. When the rotating member 102 moves the positioning assembly 400 to the position of the next positioning groove 207, the second elastic connecting piece 401 rebounds, and the insulating contact 402 is inserted into the next positioning groove 207 by the second elastic connecting piece 401, so that the insulating contact 402 is positioned.

[0099] During the process of the user continuously rotating the rotating member 102, the insulating contact 402 will continuously repeat the above-mentioned extension and removal actions, thereby realizing continuous positioning, so as to provide coordinated and uniform mechanical vibration and clicking touch feeling, to improve the knob feeling, and to make the knob more accurately positioned and fixed when the knob is not under force.

[0100] Optionally, the end of the insulating contact 402 is provided in a ball head shape, and the arc structure of the ball head makes the insulating contact 402 more easily extend into or move out of the positioning groove 207.

[0101] Specifically, the second guide groove 105 can guide and limit the movement path of the insulating contact 402, so that the insulating contact 402 can be smoothly extended into or moved out of the positioning groove 207.

[0102] Specifically, the insulating contact 402 is made of insulating rubber, insulating silica gel or other insulating materials.

[0103] Specifically, the more the positioning grooves 207 are arranged at the positions corresponding to the rotation path of the insulating contact 402 on the base 203, the higher the positioning accuracy of the knob is.

[0104] Specifically, in order to better match the contact assembly 300 and the positioning assembly 400, the through hole 206 and the positioning groove 207 are one-to-one corresponding in the radial direction of the rotating center of the rotating member 102.

[0105] Optionally, the second wave structure is arranged on the base 203 at the positions corresponding to the rotation path of the insulating contact 402, and the positioning groove 207 is located at the trough of the second wave structure.

[0106] Optionally, the positions corresponding to the rotation path of the insulating contact 402 on the base 203 are provided in a wave shape, and the positioning groove 207 is arranged at the trough of the second wave structure, so that when the insulating contact 402 is not rotated to the predetermined position, the insulating contact 402 can be automatically slid into the positioning groove 207 of the nearest trough through the guidance of the slope between the peaks and troughs of the second wave structure, so as to achieve the purpose of accurate positioning.

[0107] Figure 6 A structure schematic diagram of a touch screen assembly provided by the embodiment of the application, which is referred to as FIG. 1. Figure 6 In some embodiments, the application further provides a touch screen assembly, which comprises a touch screen and one or more knobs as described above; the knob is detachably connected to the screen 600 of the touch screen.

[0108] In the embodiment, one or more knobs are installed on the screen 600 of the touch screen, so that mechanical control of the touch screen is realized through the knobs, so that the user can realize blind control adjustment of the touch screen without looking at the screen 600, and the safety and operation efficiency of the touch screen operation are improved.

[0109] Specifically, the knob can be glued at any position of the touch screen to realize detachable design. The installation of the knob does not damage the screen 600 and the original hardware design thereof.

[0110] Specifically, the touch screen is a capacitive touch screen, and the core of the capacitive touch screen is to utilize the coupling effect between the human body capacitance and the conductive layer of the screen 600. The structure mainly includes a transparent conductive layer, which is usually made of indium tin oxide (ITO) and covers a glass or plastic substrate to form a uniform conductive grid; an insulating layer, which covers an insulating material (such as glass) on the conductive layer to prevent direct contact with the conductive layer; and a driving circuit, which is used to apply voltage to the conductive layer and detect capacitance changes.

[0111] Specifically, the knob can be pasted at any position of the screen 600, and needs to be matched with the corresponding software program. The software program needs to be set for the first time, and the function of the knob actually adjusted needs to be matched, such as volume, air volume, temperature, sunroof opening and closing, etc. At the same time, due to the differences in size, touch point position number and installation position of different knobs, when the knob is pasted on the screen 600, the knob needs to be calibrated at the first time of use. When calibrating, first, the calibration function of the software program is started, and then the knob is rotated at least one circle, the software program can identify all the touch points of the knob, and calculate the position of the current knob. Then, through the number of touch points, the number of adjustable levels of the knob for each click is analyzed, and after calibration, the knob can be used normally. For example, the software program binds the knob for volume adjustment, assuming that the volume range is 0-100, and the number of touch points of the knob is 20, then the adjustable level of the knob for each click is 5.

[0112] Specifically, when two knobs are arranged on the screen 600 of the touch screen, the two knobs are used in combination to select the function to be adjusted and the other one to adjust the degree, so that the two knobs realize multi-functional adjustment.

[0113] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0114] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0115] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0116] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification and the features of different embodiments or examples without contradiction.

[0117] In the above embodiments, the description of each of the embodiments focuses on different aspects of the embodiments. The parts not described in detail in a certain embodiment can be seen in the relevant description of the other embodiments. The technical features of the above embodiments can be combined in any manner. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the disclosure.

[0118] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0119] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the appended claims.

Claims

1. A knob, characterized in that The knob comprises a fixed assembly, a rotating assembly and a contact assembly. The fixed assembly comprises a base and a support, the base is detachably connected to the screen of the touch screen, and the support is arranged on the base. The rotating assembly comprises a rotating member, and the rotating member is rotatably sleeved on the support. The contact assembly is arranged at the bottom of the rotating assembly, and the contact assembly is configured to elastically contact the screen when the rotating assembly rotates, and the contact assembly is configured to form a coupling capacitance with the rotating assembly and a human finger when contacting the screen.

2. The knob of claim 1, wherein A first guide groove for accommodating the contact assembly is arranged at the bottom end of the rotating member. The contact assembly comprises a first elastic connecting member and a conductive contact, one end of the first elastic connecting member abuts against the first guide groove, and the other end of the first elastic connecting member abuts against one end of the conductive contact. A plurality of through holes corresponding to the rotating path of the conductive contact are arranged at intervals on the base, and the through holes are used for the conductive contact to protrude and contact the screen.

3. The knob of claim 2, wherein A first wave structure corresponding to the rotating path of the conductive contact is arranged on the base, and the through hole is located at the trough of the first wave structure.

4. The knob of claim 1, wherein A plurality of positioning assemblies are further arranged at the bottom of the rotating assembly, and the plurality of positioning assemblies are distributed around the center of the rotating assembly. A plurality of second guide grooves for accommodating the positioning assemblies are arranged at the bottom end of the rotating member, the positioning assembly comprises a second elastic connecting member and an insulating contact, one end of the second elastic connecting member abuts against the second guide groove, and the other end of the second elastic connecting member abuts against one end of the insulating contact. A plurality of positioning grooves corresponding to the rotating path of the insulating contact are arranged at intervals on the base, and the positioning grooves are used for the insulating contact to protrude and contact the screen.

5. The knob of claim 4, wherein A second wave structure corresponding to the rotating path of the insulating contact is arranged on the base, and the positioning groove is located at the trough of the second wave structure.

6. The knob according to any one of claims 1-5, wherein, The fixed assembly is provided with an axial through window.

7. The knob of claim 6, wherein A transparent cover plate is arranged at the top end of the window.

8. A knob according to any one of claims 1-5, characterized in that The rotating assembly further comprises a dial, the dial is arranged at the top end of the rotating member, and a plurality of indication marks are arranged at intervals on the dial. A positioning mark matched with the indication mark is arranged at the top end of the support.

9. The knob of any one of claims 1-5, wherein, A bearing is sleeved on the support, and the rotating member is sleeved on the bearing.

10. A touch screen assembly characterized by, The knob comprises a fixed assembly, a rotating assembly and a contact assembly. The knob is detachably connected to the screen of the touch screen.

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