Key mechanism and display device

Abstract

The utility model is suitable for the technical field of display devices, and provides a key mechanism and display equipment. The key structure is installed on the display device, the display device comprises a display screen and a control switch, and the control switch is electrically connected with the display screen. The key mechanism comprises a key part used for being electrically connected with a display screen, and the key part is provided with an operation surface and a back surface opposite to the operation surface; the shielding part is located on the side, away from the back face, of the operation face and used for driving the control switch to be switched between the on state and the off state. The shielding part is provided with a shielding position and an avoiding position, and when the shielding part is located at the shielding position, the shielding part shields the operation surface and drives the control switch to be in a closed state; when the shielding part is located at the avoiding position, the shielding part is moved away so that the operation face can be exposed, and the shielding part drives the control switch to be in an on state. The shielding part can shield the operation surface, so that the key part is prevented from being mistakenly touched, the display screen is prevented from being closed in real time, and meanwhile, the operation surface can be exposed.

Description

Technical Field

[0001] The present application belongs to the technical field of display devices, and more specifically, to a key mechanism and a display device. Background Art

[0002] A display device is a hardware device that can convert data signals in an electronic system into visual information such as images, text or video, and is widely used in various fields.

[0003] The display device in the related art includes a display screen and buttons, wherein the buttons are installed on the display screen to control the display screen; however, the buttons in the related art are usually directly installed on the side of the display screen, which is not only easy to be accidentally touched, but also affects the aesthetics of the display screen. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a key mechanism and a display device, aiming to solve the technical problem in the related art that keys are easily touched by mistake.

[0005] To achieve the above-mentioned purpose, according to one aspect of the present application, a key mechanism is provided, which is installed on a display device, and the display device includes a display screen and a control switch, and the control switch is electrically connected to the display screen; the key mechanism includes: a key part, which is used to be electrically connected to the display screen, and the key part has an operating surface and a back surface, and the operating surface and the back surface are arranged opposite to each other; a shielding part, which is located on the side of the operating surface away from the back surface, and is used to drive the control switch to switch between an on state and a off state; wherein the shielding part has a shielding position and an avoidance position, and when the shielding part is in the shielding position, the shielding part shields the operating surface and drives the control switch to be in a closed state; when the shielding part is in the avoidance position, the shielding part moves away to expose the operating surface, and the shielding part drives the control switch to be in an on state.

[0006] Optionally, the control switch includes a switch body and a movable handle, the movable handle can slide on the switch body to switch the control switch between an on state and a off state; the button mechanism also includes a mounting frame, and the button part is mounted on the mounting frame; the shielding part includes: a shielding member, the shielding member can move on the mounting frame along a preset direction relative to the button part to shield the operating surface or expose the operating surface; a pushing block, mounted on the shielding member, for pushing the movable handle to slide on the switch body.

[0007] Optionally, there are two pushing blocks, which are arranged at intervals along a preset direction, and a clamping gap for the movable handle to be inserted is formed between the two pushing blocks. The two pushing blocks can simultaneously push the movable handle to slide on the switch body.

[0008] Optionally, the shielding portion further includes a toggle block, which is mounted on the shielding member and is used to drive the shielding member to move along a preset direction relative to the button portion.

[0009] Optionally, the mounting frame has a mounting plate, the shielding member is located on one side of the mounting plate; the button portion is located on the side of the shielding member away from the mounting plate; a button through hole and a toggle through hole are provided on the mounting plate; when the shielding member is in the avoidance position, the operating surface is exposed outwardly through the button through hole; the pushing block is installed on the surface of the shielding member away from the mounting plate; the toggle block is installed on the surface of the shielding member close to the mounting plate and is penetrated through the toggle through hole.

[0010] Optionally, the button mechanism also includes a limiting portion, which includes a first limiting member, which is installed on the mounting plate; the first limiting member has a first limiting block, which is located on the side of the shielding member away from the mounting plate, and a first moving gap is formed between the first limiting block and the mounting plate for the shielding member to move.

[0011] Optionally, the shielding member includes a shielding strip and a mounting plate, the shielding strip can shield the operating surface or expose the operating surface; the mounting plate is installed on the surface of the shielding strip away from the mounting plate, the pushing block is installed on the mounting plate, the toggle block is installed on the mounting plate, and the first limit block is in linear contact with the mounting plate.

[0012] Optionally, the limiting portion also includes a second limiting member, which is located on one side of the first limiting member and is installed on the mounting plate; the second limiting member has a second limiting block, which is located on the side of the shielding strip away from the mounting plate, and a second moving gap for the shielding strip to move is formed between the second limiting block and the mounting plate, the spacing of the second moving gap is smaller than the spacing of the first moving gap, and the second limiting block is in contact with the shielding strip line.

[0013] Optionally, the key mechanism also includes a key circuit board, which is installed on the surface of the key part away from the mounting plate, and the first limiter is connected to the key circuit board to connect the key part to the mounting plate; the key circuit board is electrically connected to the key part for electrically connecting to the display screen.

[0014] According to another aspect of the present application, a display device is provided, including a display screen, a control switch and the above-mentioned key mechanism, wherein the control switch is electrically connected to the display screen, and the key portion is installed on the display screen, and the key portion is electrically connected to the display screen.

[0015] Optionally, the control switch is a toggle switch; a mounting groove is provided on the display screen, and the button mechanism is installed in the mounting groove.

[0016] The beneficial effect of the key mechanism provided by the present application is that: when the key part in the present application needs to be used, the shielding part is driven to be in the avoidance position, at which time the shielding part will move away and no longer shield the key part, and at the same time, the shielding part will also drive the control switch to be in the on state to turn on the display screen; when the key part in the present application is not needed, the shielding part is driven to be in the shielding position, at which time the shielding part will shield the operating surface of the key part to avoid accidental touch and protect the key part, and at the same time, the shielding part will also drive the control switch to be in the off state to turn off the display screen. The shielding part in the present application can not only shield the operating surface of the key part, thereby avoiding the key part from being accidentally touched and turning off the display screen in real time, playing a protective role and linkage role, but also can expose the operating surface of the key part after switching the position, so that the key part can be used normally and the display screen can be turned on in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical features of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the structure of a key mechanism provided in an embodiment of the present application in which a shielding portion is in an avoidance position;

[0019] Figure 2 A schematic structural diagram of a shielding portion in a key mechanism provided in an embodiment of the present application in a shielding position;

[0020] Figure 3 A front exploded schematic diagram of a key mechanism provided in an embodiment of the present application;

[0021] Figure 4 An exploded schematic diagram of the back side of the key mechanism provided in an embodiment of the present application;

[0022] Figure 5 A front view schematic diagram of a shielding portion in a key mechanism provided in an embodiment of the present application in a shielding position;

[0023] Figure 6 for Figure 5 Schematic cross-sectional view of AA in the figure;

[0024] Figure 7 A schematic top view of a key mechanism provided in an embodiment of the present application;

[0025] Figure 8 A schematic top view of the key mechanism provided in the embodiment of the present application after the installation frame is hidden;

[0026] Fig. 9 A schematic diagram of the structure of a display device provided in an embodiment of the present application;

[0027] Fig.10 for Fig. 9 The enlarged schematic diagram of point A in the middle;

[0028] The reference numerals in the above drawings are as follows:

[0029] 100, display screen; 200, control switch; 210, switch body; 220, movable handle;

[0030] 300, button portion; 310, operation surface; 320, back surface;

[0031] 400, shielding portion; 410, shielding member; 411, shielding strip; 412, mounting sheet; 420, pushing block; 430, toggle block;

[0032] 500, mounting frame; 510, mounting plate; 511, button through hole; 512, toggle through hole;

[0033] 610, first limiting member; 611, first limiting block; 620, second limiting member; 621, second limiting block;

[0034] 700. Key circuit board. DETAILED DESCRIPTION

[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and Examples. The following examples are only used to illustrate the present application, but are not used to limit the scope of protection of the present application. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without paying creative work should all belong to the scope of protection of the present application.

[0036] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In the description of this application, it should be understood that the numbers in this document, such as "first", "second", etc., are only used to distinguish the objects described, have no sequential or technical meaning, and cannot be understood as stipulating or implying the importance of the objects described.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In the description of this application, the term "plurality" refers to two or more than two. In addition, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0040] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0041] As described in the background technology, at present, a display device is a hardware device that can convert data signals in an electronic system into visual information such as images, text or videos, and is widely used in various fields. The display device in the related art includes a display screen and a button, wherein the button is installed on the display screen to control the display screen; however, the button in the related art is usually directly installed on the side of the display screen, which is not only easy to be accidentally touched, but also affects the aesthetics of the display screen.

[0042] Reference Figures 1 to 4 , Fig. 9 as well as Fig.10In order to solve the above problems, according to one aspect of the present application, an embodiment of the present application provides a key mechanism, which is used for a display device, and the display device includes a display screen 100 and a control switch 200, and the control switch 200 is electrically connected to the display screen 100; the key mechanism includes a key part 300 and a shielding part 400, wherein the key part 300 is used to be electrically connected to the display screen 100, and the key part 300 has an operating surface 310 and a back surface 320, and the operating surface 310 is arranged opposite to the back surface 320; the shielding part 400 is located on the side of the operating surface 310 away from the back surface 320, and is used to drive the control switch 200 to switch between the on state and the off state; the shielding portion 400 has a shielding position and an avoidance position. When the shielding portion 400 is in the shielding position, the shielding portion 400 shields the operating surface 310 and drives the control switch 200 to be in the off state; when the shielding portion 400 is in the avoidance position, the shielding portion 400 moves away to expose the operating surface 310, and the shielding portion 400 drives the control switch 200 to be in the on state.

[0043] In the embodiment of the present application, the display device is generally an interactive display screen. In other embodiments, the display device may also be a television, a computer monitor or other display device; the control switch 200 is generally a toggle switch for controlling the opening and closing of the display screen 100. In other embodiments, the control switch 200 may also be a button switch, a rotary switch or a sliding switch. The button portion 300 generally includes a plurality of buttons arranged at intervals, and the surfaces of the plurality of buttons together constitute an operating surface 310. The user controls the display screen 100 by pressing the buttons in the button portion 300; the shielding portion 400 generally switches between the shielding position and the avoidance position by reciprocating movement, and drives the control switch 200 to switch between the closed state and the open state. In other embodiments, the shielding portion 400 may also switch between the shielding position and the avoidance position by reciprocating rotation, and drives the control switch 200 to switch between the closed state and the open state. Fig.10 The shielding portion 400 in the illustrated display device is in a retracted position.

[0044] When the button part 300 in the present application is needed, the shielding part 400 is driven to be in the avoidance position, at which time the shielding part 400 will move away and no longer shield the button part 300. At the same time, the shielding part 400 will also drive the control switch 200 to be in the open state, so that the display screen 100 is turned on; when the button part 300 in the present application is not needed, the shielding part 400 is driven to be in the shielding position, at which time the shielding part 400 will shield the operation surface 310 of the button part 300 to avoid accidental touch and protect the button part 300. At the same time, the shielding part 400 will also drive the control switch 200 to be in the closed state, so that the display screen 100 is turned off. The shielding part 400 in the present application can not only shield the operation surface 310 of the button part 300, thereby preventing the button part 300 from being accidentally touched and causing the display screen 100 to be turned off in real time, playing a protective role and a linkage role, but also can expose the operation surface 310 of the button part 300 after switching the position, so that the button part 300 can be used normally and the display screen 100 can be turned on in real time.

[0045] Reference Figures 1 to 6 In one embodiment, the control switch 200 includes a switch body 210 and a movable handle 220, and the movable handle 220 can slide on the switch body 210 to switch the control switch 200 between an on state and a off state; the button mechanism also includes a mounting frame 500, and the button part 300 is mounted on the mounting frame 500; the shielding part 400 includes a shielding member 410 and a pushing block 420, wherein the shielding member 410 can move on the mounting frame 500 along a preset direction relative to the button part 300 to shield the operating surface 310 or expose the operating surface 310; the pushing block 420 is installed on the shielding member 410, and is used to push the movable handle 220 to slide on the switch body 210.

[0046] In this embodiment, the control switch 200 is a toggle switch, and the way in which the movable handle 220 slides on the switch body 210 is common knowledge to those skilled in the art, and will not be elaborated in detail here. The installation frame 500 generally has an installation space, and the shielding portion 400 and the button portion 300 are both installed in the installation space. The installation frame 500 plays a bearing and protective role.

[0047] As the shielding member 410 moves, the shielding member 410 will shield the operating surface 310 of the button portion 300 or expose the operating surface 310 of the button portion 300. During this process, the pushing block 420 will also push the movable handle 220 to switch the control switch 200 between the closed state and the open state.

[0048] In addition, the movable handle 220 can generally slide on the switch body 210 along a preset direction, so that the pushing block 420 can more smoothly push the movable handle 220 to slide on the switch body 210 when moving along the preset direction.

[0049] Reference Figure 6 In one embodiment, there are two push blocks 420, which are arranged at intervals along a preset direction, and a clamping gap for the movable handle 220 to be inserted is formed between the two push blocks 420. The two push blocks 420 can simultaneously push the movable handle 220 to slide on the switch body 210.

[0050] In this embodiment, the two surfaces of the two pushing blocks 420 that are close to each other generally contact the movable handle 220 at the same time, so that the two pushing blocks 420 can simultaneously push the movable handle 220 to slide on the switch body 210; by adopting the two pushing blocks 420 in this application, the movable handle 220 can be accurately stopped at the desired stopping position, which is conducive to making the control switch 200 accurately in the desired state; the two pushing blocks 420 set at the same time also increase the moving speed of the movable handle 220.

[0051] Reference Figures 1 to 8 In one embodiment, the shielding portion 400 further includes a toggle block 430 , which is mounted on the shielding member 410 and is used to drive the shielding member 410 to move along a preset direction relative to the button portion 300 .

[0052] In this embodiment, by applying a pulling force to the toggle block 430, the shielding member 410 can be driven to move along a preset direction relative to the button portion 300; the toggle block 430 is arranged to be easy to grasp, thereby facilitating the shielding member 410 to move along a preset direction relative to the button portion 300, thereby improving the convenience of operation.

[0053] Reference Figures 1 to 8 In one embodiment, the mounting frame 500 has a mounting plate 510, and the shielding member 410 is located on one side of the mounting plate 510; the button portion 300 is located on the side of the shielding member 410 away from the mounting plate 510; a button through hole 511 and a toggle through hole 512 are provided on the mounting plate 510; when the shielding member 400 is in the avoidance position, the operating surface 310 is exposed to the outside through the button through hole 511; the pushing block 420 is installed on the surface of the shielding member 410 away from the mounting plate 510; the toggle block 430 is installed on the surface of the shielding member 410 close to the mounting plate 510, and is penetrated in the toggle through hole 512.

[0054] In this embodiment, the key through hole 511 generally completely covers the multiple keys on the key part 300, so that when the shielding part 400 is in the avoidance position, the operating surface 310 of the key part 300 can be completely exposed to the outside through the key through hole 511, so that the user can perform corresponding operations on the key part 300; the toggle through hole 512 is located on one side of the key through hole 511, and the extension direction of the toggle through hole 512 is parallel to the preset direction, so that the part of the structure of the toggle block 430 that passes through the toggle through hole 512 can move in the toggle through hole 512 along the preset direction; the toggle block 430 extends through the toggle through hole 512 to the side of the mounting plate 510 away from the key part 300, so as to facilitate holding; in addition, the control switch 200 is located on the side of the shielding member 410 away from the mounting plate 510. The design that the push block 420 is installed on the surface of the shielding member 410 away from the mounting plate 510 makes the toggle block 430 and the push block 420 not interfere with each other.

[0055] Reference Figures 1 to 4 , Figure 7 as well as Figure 8 In one embodiment, the button mechanism also includes a limiting portion, which includes a first limiting member 610, and the first limiting member 610 is installed on the mounting plate 510; the first limiting member 610 has a first limiting block 611, and the first limiting block 611 is located on the side of the shielding member 410 away from the mounting plate 510, and a first moving gap is formed between the first limiting block 611 and the mounting plate 510 for the shielding member 410 to move.

[0056] In this embodiment, the first limiter 610 is generally mounted on the mounting plate 510 by fasteners such as connecting screws or connecting pins, and the spacing of the first moving gap is generally slightly larger than the thickness of the shielding member 410. By driving the toggle block 430 to move along the preset direction, the shielding member 410 will also move relative to the button portion 300 along the preset direction within the first moving gap.

[0057] The first limit block 611 has a limiting function, so that the shielding member 410 can only move along a preset direction, ensuring smooth operation of the shielding member 410 shielding the operating surface 310 and exposing the operating surface 310; the first limit block 610 also has a connecting function, so that the first limit block 611 can be connected to the mounting plate 510. In addition, in order to limit the moving range of the shielding member 410, the mounting frame 500 also has a first limit plate and a second limit plate, the first limit plate is fixedly mounted on the first end of the mounting plate 510, the first limit plate extends in a direction close to the button portion 300, and the first limit plate is perpendicular to the mounting plate 510; the second limit plate is fixedly mounted on the second end of the mounting plate 510 and is located on one side of the first limit plate, the second limit plate extends in a direction close to the button portion 300, and the second limit plate is perpendicular to the mounting plate 510.

[0058] Reference Figures 1 to 4 , Figure 6 as well as Figure 8 In one embodiment, the shielding member 410 includes a shielding strip 411 and a mounting piece 412. The shielding strip 411 can shield the operating surface 310 or expose the operating surface 310. The mounting piece 412 is installed on the surface of the shielding strip 411 away from the mounting plate 510. The pushing block 420 is installed on the mounting piece 412. The toggle block 430 is installed on the mounting piece 412. The first limit block 611 is in line contact with the mounting piece 412.

[0059] In this embodiment, the mounting plate 412 is generally installed on the surface of the shielding strip 411 away from the mounting plate 510 using fasteners such as connecting screws or connecting pins; the setting of the shielding strip 411 and the mounting plate 412 not only improves the manufacturing flexibility and efficiency, but also reduces the manufacturing cost.

[0060] The toggle block 430 is fixedly mounted on the surface of the mounting piece 412 close to the mounting plate 510, and the shielding strip 411 is provided with a through hole for the toggle block 430 to penetrate; the push block 420 is fixedly mounted on the surface of the mounting piece 412 away from the mounting plate 510; the surface of the first limit block 611 close to the mounting piece 412 is an arc surface, so that the first limit block 611 and the mounting piece 412 are in line contact, thereby reducing the friction force applied by the first limit block 611 to the mounting piece 412, and extending the service life of the mounting piece 412 and the first limit block 611. In order to facilitate the identification of the state of the shielding part 400, the surface of the shielding strip 411 away from the mounting piece 412 is provided with power on and power off marks, and the power on and power off marks are arranged at intervals along a preset direction.

[0061] In addition, to facilitate the assembly of the toggle block 430, the push block 420 and the mounting plate 412, the toggle block 430, the push block 420 and the mounting plate 412 are welded molded parts or integrally molded parts; to reduce the friction force applied by the shielding member 410 to the mounting plate 510, a contact strip extending toward the mounting plate 510 is usually fixedly installed on the mounting plate 412, and the surface of the contact strip close to the mounting plate 510 is an arc surface, so that the contact strip is in line contact with the mounting plate 510; to ensure that the shielding member 410 only moves along a preset direction, the button part 300 has a limiting surface, and the limiting surface is in contact with the surface of the mounting plate 412 away from the shielding strip 411 to limit the surface of the mounting plate 412 away from the shielding strip 411; to reduce the friction force applied by the limiting surface to the mounting plate 412, the surface of the mounting plate 412 close to the limiting surface is an arc surface, so that the surface of the mounting plate 412 close to the limiting surface is in line contact with the limiting surface.

[0062] Reference Figures 1 to 4 , Figure 7 as well as Figure 8In one embodiment, the limiting portion further includes a second limiting member 620, which is located on one side of the first limiting member 610 and is installed on the mounting plate 510; the second limiting member 620 has a second limiting block 621, which is located on the side of the shielding strip 411 away from the mounting plate 510, and a second moving gap for the shielding strip 411 to move is formed between the second limiting block 621 and the mounting plate 510, the spacing of the second moving gap is smaller than the spacing of the first moving gap, and the second limiting block 621 is in line contact with the shielding strip 411.

[0063] In this embodiment, the second limit member 620 is generally installed on the mounting plate 510 using fasteners such as connecting screws or connecting pins, and the length of the second moving gap is generally slightly larger than the thickness of the shielding strip 411; the second limit member 620 is set to strengthen the limiting effect on the shielding strip 410, so that the shielding strip 410 can only move along a preset direction, ensuring that the shielding strip 410 shields the operating surface 310 and exposes the operating surface 310 and other operations are carried out smoothly; the surface of the second limit block 621 close to the shielding strip 411 is an arc surface, so that the second limit block 621 is in line contact with the shielding strip 411, thereby reducing the friction force applied by the second limit block 621 to the shielding strip 411, and extending the service life of the shielding strip 411 and the second limit block 621.

[0064] Reference Figures 1 to 4 , Figure 7 as well as Figure 8 In one embodiment, the key mechanism also includes a key circuit board 700, which is installed on the surface of the key part 300 away from the mounting plate 510, and the first limit member 610 is connected to the key circuit board 700 to connect the key part 300 to the mounting plate 510; the key circuit board 700 is electrically connected to the key part 300 for being electrically connected to the display screen 100.

[0065] In this embodiment, the key circuit board 700 is generally installed on the surface of the key part 300 away from the mounting plate 510 using fasteners such as connecting screws or connecting pins; at the same time, the key circuit board 700 is generally fixedly connected to the first limit member 610 using fasteners such as connecting screws or connecting pins, and the key circuit board 700 is generally fixedly connected to the second limit member 620 using fasteners such as connecting screws or connecting pins, so as to achieve a stable connection between the key part 300 and the mounting plate 510.

[0066] In addition, the control switch 200 is mounted on the surface of the key circuit board 700 close to the mounting plate 510, and is used to be electrically connected to the key circuit board 700. In order to enhance the stability of the key circuit board 700 on the key part 300, a plurality of protrusions are provided on the surface of the key part 300 close to the key circuit board 700, and a plurality of grooves are provided on the key circuit board 700, the number of the grooves is equal to the number of the protrusions, and the plurality of grooves are respectively provided in a one-to-one correspondence with the plurality of protrusions, and the protrusions are inserted into the corresponding grooves to enhance the stability of the key circuit board 700 on the key part 300. In other embodiments, the protrusions may also be provided on the key circuit board 700, and the grooves may be provided on the surface of the key part 300 close to the key circuit board 700.

[0067] Reference Figures 1 to 10 According to another aspect of the present application, an embodiment of the present application further provides a display device, the display device includes a display screen 100, a control switch 200 and the above-mentioned button mechanism, the control switch 200 is electrically connected to the display screen 100, the button part 300 is installed on the display screen 100, and the button part 300 is electrically connected to the display screen 100.

[0068] In the embodiment of the present application, the display device is generally an interactive display screen. In other embodiments, the display device may also be a television, a computer monitor or other display device. The control switch 200 is generally a toggle switch for controlling the opening and closing of the display screen 100. In other embodiments, the control switch 200 may also be a button switch, a rotary switch or a sliding switch.

[0069] When the button part 300 in the present application is needed to be used, the shielding part 400 is driven to be in the avoidance position. At this time, the shielding part 400 will move away and no longer shield the button part 300. At the same time, the shielding part 400 will also drive the control switch 200 to be in the on state to turn on the display screen 100; when the button part 300 in the present application is not needed to be used, the shielding part 400 is driven to be in the shielding position. At this time, the shielding part 400 will shield the operating surface 310 of the button part 300 to avoid accidental touch and protect the button part 300. At the same time, the shielding part 400 will also drive the control switch 200 to be in the off state to turn off the display screen 100.

[0070] Reference Figures 1 to 10 In one embodiment, the control switch 200 is a toggle switch; a mounting groove is provided on the display screen 100, and the button mechanism is installed in the mounting groove.

[0071] In this embodiment, the toggle switch generally includes a switch body 210 and a movable handle 220. The movable handle 220 can slide along a preset direction on the switch body 210 to switch the control switch 200 between an on state and a off state. The provided mounting groove not only provides an installation location for the key mechanism and plays a role in protecting the key mechanism, but also improves the aesthetics of the display device. In addition, in order to facilitate the operation of the key mechanism, the mounting groove is provided on the front of the display screen 100, and the surface of the key mechanism close to the front of the display screen 100 is flush with the front of the display screen 100.

[0072] In summary, the key mechanism and display device provided in this embodiment have at least the following beneficial technical effects: when the key part 300 in the present application needs to be used, the shielding part 400 is driven to be in the avoidance position. At this time, the shielding part 400 will move away and no longer shield the key part 300. At the same time, the shielding part 400 will also drive the control switch 200 to be in the on state to turn on the display screen 100; when the key part 300 in the present application is not needed, the shielding part 400 is driven to be in the shielding position. At this time, the shielding part 400 will shield the operating surface 310 of the key part 300 to avoid accidental touch and protect the key part 300. At the same time, the shielding part 400 will also drive the control switch 200 to be in the off state to turn off the display screen 100. The shielding portion 400 in the present application can not only shield the operating surface 310 of the button portion 300, thereby preventing the button portion 300 from being accidentally touched and causing the display screen 100 to be turned off in real time, playing a protective and linkage role, but can also expose the operating surface 310 of the button portion 300 after switching positions, so that the button portion 300 can be used normally and the display screen 100 can be turned on in real time.

[0073] The above is only a preferred implementation of the present application, but the protection scope of the present application is not limited thereto. It should be pointed out that for those skilled in the art, several equivalent obvious variations and / or equivalent replacements can be made without departing from the technical principles of the present application. These obvious variations and / or equivalent replacements should also be regarded as the protection scope of the present application.

Claims

1. A key mechanism, characterized in that: Installed on a display device, the display device comprising a display screen (100) and a control switch (200), the control switch (200) being electrically connected to the display screen (100); The key mechanism comprises: a key portion (300) for being electrically connected to the display screen (100), the key portion (300) having an operating surface (310) and a back surface (320), the operating surface (310) and the back surface (320) being arranged opposite to each other; a shielding portion (400), the shielding portion (400) being located on a side of the operating surface (310) away from the back surface (320), and being used to drive the control switch (200) to switch between an on state and a off state; The shielding portion (400) has a shielding position and an avoidance position. When the shielding portion (400) is in the shielding position, the shielding portion (400) shields the operating surface (310) and drives the control switch (200) to be in the closed state; when the shielding portion (400) is in the avoidance position, the shielding portion (400) moves away to expose the operating surface (310), and the shielding portion (400) drives the control switch (200) to be in the open state.

2. The key mechanism according to claim 1, characterized in that: The control switch (200) comprises a switch body (210) and a movable handle (220), wherein the movable handle (220) can slide on the switch body (210) so as to switch the control switch (200) between the on state and the off state; The key mechanism further comprises a mounting frame (500), and the key portion (300) is mounted on the mounting frame (500); The shielding portion (400) comprises: a shielding member (410), wherein the shielding member (410) is movable on the installation frame (500) along a preset direction relative to the button portion (300) to shield the operating surface (310) or expose the operating surface (310); A pushing block (420) is mounted on the shielding member (410) and is used to push the movable handle (220) to slide on the switch body (210).

3. The key mechanism according to claim 2, characterized in that: There are two pushing blocks (420), and the two pushing blocks (420) are arranged at intervals along the preset direction. A clamping gap for the movable handle (220) to be inserted is formed between the two pushing blocks (420). The two pushing blocks (420) can simultaneously push the movable handle (220) to slide on the switch body (210).

4. The key mechanism according to claim 2, characterized in that: The shielding portion (400) further comprises a toggle block (430), wherein the toggle block (430) is mounted on the shielding member (410) and is used to drive the shielding member (410) to move along the preset direction relative to the button portion (300).

5. The key mechanism according to claim 4, characterized in that: The installation frame (500) has a mounting plate (510), the shielding member (410) is located on one side of the mounting plate (510); the button portion (300) is located on a side of the shielding member (410) away from the mounting plate (510); The mounting plate (510) is provided with a key through hole (511) and a toggle through hole (512); when the shielding portion (400) is in the avoidance position, the operating surface (310) is exposed to the outside through the key through hole (511); the pushing block (420) is mounted on a surface of the shielding member (410) away from the mounting plate (510); and the toggle block (430) is mounted on a surface of the shielding member (410) close to the mounting plate (510), and is inserted into the toggle through hole (512).

6. The key mechanism according to claim 5, characterized in that: The key mechanism further comprises a limiting portion, wherein the limiting portion comprises a first limiting member (610), and the first limiting member (610) is mounted on the mounting plate (510); The first limiting member (610) comprises a first limiting block (611), the first limiting block (611) being located on a side of the shielding member (410) away from the mounting plate (510), and a first moving gap for the shielding member (410) to move is formed between the first limiting block (611) and the mounting plate (510).

7. The key mechanism according to claim 6, characterized in that: The shielding member (410) comprises a shielding strip (411) and a mounting sheet (412); the shielding strip (411) is capable of shielding the operating surface (310) or exposing the operating surface (310); The mounting piece (412) is mounted on a surface of the shielding strip (411) away from the mounting plate (510), the pushing block (420) is mounted on the mounting piece (412), the toggle block (430) is mounted on the mounting piece (412), and the first limiting block (611) is in line contact with the mounting piece (412).

8. The key mechanism according to claim 7, characterized in that: The limiting portion further comprises a second limiting member (620), wherein the second limiting member (620) is located on one side of the first limiting member (610), and the second limiting member (620) is mounted on the mounting plate (510); The second limiting member (620) comprises a second limiting block (621), the second limiting block (621) being located at a side of the shielding strip (411) away from the mounting plate (510), a second moving gap for movement of the shielding strip (411) being formed between the second limiting block (621) and the mounting plate (510), the spacing of the second moving gap being smaller than the spacing of the first moving gap, and the second limiting block (621) being in line contact with the shielding strip (411).

9. The key mechanism according to claim 6, characterized in that: The key mechanism further comprises a key circuit board (700), wherein the key circuit board (700) is mounted on a surface of the key portion (300) away from the mounting plate (510), and the first limiting member (610) is connected to the key circuit board (700) so that the key portion (300) is connected to the mounting plate (510); the key circuit board (700) is electrically connected to the key portion (300) and is used to be electrically connected to the display screen (100).

10. A display device, characterized in that: The invention comprises a display screen (100), a control switch (200) and a key mechanism according to any one of claims 1 to 9, wherein the control switch (200) is electrically connected to the display screen (100), the key part (300) is mounted on the display screen (100), and the key part (300) is electrically connected to the display screen (100).

11. The display device according to claim 10, characterized in that The control switch (200) is a toggle switch; the display screen (100) is provided with a mounting groove, and the key mechanism is mounted in the mounting groove.

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