CN108206112A - Key assembly, keyboard and mobile terminal - Google Patents

Abstract

The invention relates to the technical field of electronic equipment, and discloses a key assembly, a keyboard and a terminal, wherein the key assembly comprises: base plate, key cap and be used for the ascending lifting unit of drive key cap, lifting unit includes: the lifting bracket is respectively hinged with the keycap and the substrate; the sliding plate can slide relative to the substrate and can be locked at a set position; the driving and locking assembly is connected with the sliding plate and the keycap or the lifting support; when the sliding plate is located at the second set position, the driving and locking assembly is located at the locking working position, and the keycap is locked at the position when the keycap is pressed. In the above embodiment, when the driving and locking assembly is in the lock position, the keycap can be pulled to sink to the position where the keycap is pressed down, and the keycap is locked, at this time, the height of the whole keyboard can be reduced, so that the keyboard is convenient to thin, and the whole mobile terminal is convenient to thin.

Description

A key assembly, keyboard and mobile terminal

technical field

The invention relates to the technical field of electronic equipment, in particular to a key assembly, a keyboard and a terminal.

Background technique

With the rapid development of software and hardware technology, the performance of electronic equipment is getting higher and higher, but the volume is getting smaller and smaller. It is undeniable that light and thin is a development trend of electronic equipment. Especially the electronic devices that need to be carried, such as notebooks, have put forward very high requirements in terms of portability, battery life, and weight.

At present, most buttons used in the market are scissor feet + silicone cap structure. The key consists of: key cap, scissor foot, silicone cap, substrate, circuit board and other components. The keycaps are mounted on the base plate by scissor feet. The opening and closing of the scissor foot structure can control the movement direction and displacement of the keycap, and the silicone cap placed under the keycap provides the resilience of the key to keep the key up.

Since the silicone cap has always provided the lift of the keycap, the keycap will not sink when there is no external force, especially after the notebook is fastened, there will generally be a certain gap between the keycap and the display to protect the screen. In the existing solution, the space of these two parts cannot be fully utilized, and the protruding buttons may touch the screen.

Contents of the invention

The invention provides a button assembly, a keyboard and a mobile terminal, which is convenient for the thinning development of the mobile terminal.

The present invention provides a button assembly, which includes: a substrate, a keycap, and a lifting assembly for driving the keycap to rise, and the lifting assembly includes: a lifting bracket hinged to the keycap and the substrate; A slide plate, the slide plate can slide relative to the base plate and can be locked at a set position; a driving and locking assembly connected with the slide plate and the keycap or lifting bracket; wherein,

When the slide plate is locked to the first setting position, the driving and locking assembly is in the driving working position, and provides upward supporting force to the keycap; when the slide plate is in the second setting position, the The driving and locking assembly is in the locking working position, and locks the keycap at the position when it is pressed.

In the above embodiment, the position control of the keycap is realized through the driving and locking assembly. When the driving and locking assembly is in the driving position, it can provide a lifting force for the keycap, so that the keycap can be used normally. After pressing down, Return to the initial position by the lifting force; when the driving and locking components are in the locked position, the keycap can be pulled to sink to the position when the keycap is pressed down, and the keycap is locked. At this time, the height of the entire keyboard can be reduced. Therefore, it facilitates the thinning of the keyboard, and further facilitates the thinning of the entire mobile terminal.

In a specific arrangement, the driving and locking assembly and the lifting bracket are arranged side by side between the keycap and the base plate. Therefore, the driving and locking components share the thickness space with the lifting bracket, which is beneficial to reduce the thickness of the components.

During specific setting, the lifting bracket is used to limit the movement direction and movement distance of the keycap.

In a specific embodiment, the driving and locking assembly includes: a first magnetic part and a first magnetic adsorption part, the first magnetic part is fixedly connected to the slide plate, the first magnetic adsorption part is arranged obliquely, And the first end of the first magnetic adsorption part is hinged to the keycap, and the second end is pressed against the substrate and can slide relative to the substrate; wherein,

When the slide plate slides to the first set position, the first magnetic part is engaged with the second end of the first magnetic adsorption part, and drives the first magnetic adsorption part to rotate to the key The cap provides support; when the slide plate slides to the second set position, it moves to make the included angle between the first magnetic adsorption part and the base plate smaller and lock the key cap at the position when it is pressed . In this specific driving and locking assembly, by adjusting the position of the first magnetic part, the functions of controlling the keycap to rise and locking the keycap are realized.

In another specific embodiment, the driving and locking assembly includes: a fourth magnetic member fixed on the slide plate, a third magnetic adsorption member fixed on the first bracket at one end hinged to the base plate ;in,

When the slide plate slides to the first set position, the fourth magnetic part is located on the first side of the first bracket and absorbs the third magnetic adsorption part, driving the first bracket to rotate to the The keycap provides support; when the slide plate slides to the second set position, the fourth magnetic part is located on the other side of the first bracket and absorbs the third magnetic adsorption part, and the keycap Locks in position when pressed. In this specific driving and locking assembly, the function of controlling the keycap to rise and locking the keycap is realized by adjusting the fourth magnetic part to be on different sides of the first bracket, that is, to be on different sides of the third magnetic adsorption part.

In a specific setting, a groove is provided on the first bracket, and the third magnetic adsorption part is fixed in the groove. That is, the connection between the third magnetic adsorption part and the first bracket is realized by fixing the magnetic adsorption part in the groove.

In another embodiment, the driving and locking assembly includes: a second magnetic component and a second magnetic adsorption component fixed on the slide plate, and a third magnetic component fixed on the keycap;

When the slide plate slides to the first set position, the polarity of the opposite magnetic pole of the second magnetic part and the third magnetic part is the same, which provides the supporting force for the keycap to rise; the slide plate slides to At the second setting position, the repulsive force between the third magnetic part and the second magnetic part is smaller than the adsorption force of the third magnetic part to the second magnetic adsorption part, and the keycap is locked position when pressed. In this embodiment, by adjusting the position of the second magnetic part, when the second magnetic part and the third magnetic part are repelled, the keycap is provided with a rising force, and when the second magnetic part and the second magnetic adsorption part are adsorbed, the keycap will be released. The cap locks in the pressed position.

In a preferred solution, the sliding plate is a plate-like structure made of a magnetic adsorption material, and the second magnetic adsorption member is integrally formed with the sliding plate. At this time, the slide plate is used as the second magnetic adsorption part, which simplifies the structure of the whole device.

When the magnetic parts are specifically arranged, the third magnetic part has a first inclined surface, the second magnetic part has a second inclined surface, and the first inclined surface is opposite to the second inclined surface. By using two inclined surfaces oppositely arranged, and the opposite inclined surfaces have the same polarity, it is ensured that a larger repulsive force can be provided.

Wherein the elevating bracket comprises a hinged first bracket and a second bracket, and the first bracket and the second bracket are hinged in an X shape; wherein,

One end of the first bracket is hinged to the base plate, and the other end is slidably connected to the keycap; one end of the second bracket is slidably connected to the base plate, and the other end is hinged to the keycap; One end of the first bracket hinged to the base plate and one end of the second bracket hinged to the keycap are located on the same side of the hinge point. The keycap is supported by the X-shaped bracket to ensure that the keycap can move in a set direction when pressed.

In another embodiment, the driving and locking component is an elastic connector, one end of the elastic connector is connected to the slide plate, and the other end is connected to the end of the second bracket that is slidably connected to the base plate; When the slide plate slides to the first set position, the elastic connector pushes the second bracket to slide and provides support for the keycap; when the slide plate slides to the second set position, the elastic The connecting piece pulls the second bracket to lock the keycap in the pressed position. In this embodiment, by changing the position of the elastic connecting member, the elastic connecting member provides the lifting force of the keycap and the function of locking the keycap.

In a specific setting, the elastic connecting member may be a rubber strip, a spring, an elastic piece, or an elastic structure on the sliding plate or the second bracket. The above-mentioned elastic connecting member has greater elasticity, which improves the restoring force provided by the keycap when pressed.

The button assembly provided in this embodiment further includes a frame fixedly connected to the base plate, and a through hole for passing the elevating bracket is arranged on the frame; the slide plate is slidably connected to the frame. The fixing of the skateboard is realized by the frame.

An embodiment of the present invention also provides a keyboard, which includes a casing, and a plurality of the above-mentioned key assemblies arranged in the casing.

In the above embodiment, the position control of the keycap is realized through the driving and locking assembly. When the driving and locking assembly is in the driving position, it can provide a lifting force for the keycap, so that the keycap can be used normally. After pressing down, Return to the initial position by the lifting force; when the driving and locking components are in the locked position, the keycap can be pulled to sink to the position when the keycap is pressed down, and the keycap is locked. At this time, the height of the entire keyboard can be reduced. Therefore, it facilitates the thinning of the keyboard, and further facilitates the thinning of the entire mobile terminal.

When there are multiple key assemblies, the substrates of the multiple key assemblies are integrally structured, and the slide plates are integrally structured, so that when the entire keyboard is in use, the keycaps can be in the same working state.

An embodiment of the present invention also provides a mobile terminal, the mobile terminal includes a host, and a keyboard connected to the host, wherein the keyboard includes a casing, and a plurality of the above-mentioned Key components.

In the above embodiment, the position control of the keycap is realized through the driving and locking assembly. When the driving and locking assembly is in the driving position, it can provide a lifting force for the keycap, so that the keycap can be used normally. After pressing down, Return to the initial position by the lifting force; when the driving and locking components are in the locked position, the keycap can be pulled to sink to the position when the keycap is pressed down, and the keycap is locked. At this time, the height of the entire keyboard can be reduced. Therefore, it facilitates the thinning of the keyboard, and further facilitates the thinning of the entire mobile terminal.

Description of drawings

FIG. 1 is an exploded schematic diagram of a button assembly provided by Embodiment 1 of the present invention;

Fig. 2 is a schematic structural view of the keycap in Embodiment 1 of the present invention when it is in a free state;

3 is a schematic structural view of the keycap in the pressed state in Embodiment 1 of the present invention;

FIG. 4 is a schematic structural view of the keycap in Embodiment 1 of the present invention when it is in a locked state;

FIG. 5 is an exploded schematic view of the button assembly provided by Embodiment 2 of the present invention;

6 is a schematic structural view of the keycap in the second embodiment of the present invention when it is in a free state;

FIG. 7 is a schematic structural view of the keycap in the second embodiment of the present invention when it is in a pressed state;

8 is a schematic structural view of the keycap in the locked state in Embodiment 2 of the present invention;

FIG. 9 is an exploded schematic view of the button assembly provided by Embodiment 3 of the present invention;

Fig. 10 is a schematic structural diagram of the keycap in a free state in Embodiment 3 of the present invention;

FIG. 11 is a schematic structural view of the keycap in the pressed state according to Embodiment 3 of the present invention;

Fig. 12 is a schematic structural diagram of the keycap in the locked state in Embodiment 3 of the present invention.

Reference signs:

10-substrate 20-circuit board 30-skateboard 40-frame 50-lifting assembly

51-the first bracket 52-the second bracket 61-the first magnetic adsorption piece

62-first magnetic part 63-third magnetic part 64-second magnetic part

65-Elastic connector 70-Keycap

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

An embodiment of the present invention provides a button assembly, which includes: a substrate, a keycap, and a lifting assembly for driving the keycap to rise; wherein, a circuit board is arranged on the substrate, and there is a push switch on the circuit board. When the cap is pressed down, touch the push switch to realize the signal input. When the keycap is in use, when it is pressed down, it needs to provide a lifting force through other components to ensure that the keycap can return to its original position after the finger pressing the keycap leaves.

In this embodiment, the lifting force is provided to the keycap through the provided lifting assembly. Specifically, the lifting component includes: a lifting bracket hinged to the keycap and the base plate; a slide plate, which can slide relative to the base plate and can be locked at a set position; a driving and locking component connected with the slide plate, the keycap or the lifting bracket; When the slide plate is locked to the first setting position, the driving and locking assembly is in the driving working position and provides upward support for the keycap; when the sliding plate is in the second setting position, the driving and locking assembly is in the locking working position and will The keycaps lock into place when pressed. It can be seen from the above description that the lifting assembly provided by this embodiment can realize two functions: provide a lifting force for the keycap, and lock the keycap at a set position, which can be used when the keycap is pressed by hand. position, or any position lower than the height of the keycap when it is in a free state. Lifting assembly is realized through the cooperation of its slide plate and driving and locking assembly when realizing above-mentioned function. The specific structure of the driving and locking assembly can be realized by using different structures. For the convenience of understanding, it will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in FIG. 1 , FIG. 1 shows an exploded schematic view of the button assembly provided by this embodiment. The button assembly provided in this embodiment includes: a base plate 10, a keycap 70, and a lift assembly 50, and the lift assembly 50 includes: a slide plate 30, a lift bracket, and a driving and locking assembly.

In a specific arrangement, the driving and locking assembly and the lifting bracket are arranged side by side between the keycap 70 and the base plate 10 . Therefore, the driving and locking components share the thickness space with the lifting bracket, which is beneficial to reduce the thickness of the components.

The lifting bracket wherein is used to limit the movement direction and movement distance of the keycap 70, which can be implemented in different ways to limit the movement and distance of the keycap 70 in the vertical direction. In a specific embodiment, the lifting The bracket includes: a hinged first bracket 51 and a second bracket 52, and the first bracket 51 and the second bracket 52 are hinged in an X shape; one end of the first bracket 51 is hinged with the base plate 10, and the other end slides with the keycap 70 One end of the second bracket 52 is slidably connected to the base plate 10, and the other end is hinged to the keycap 70, and the hinged end of the first bracket 51 to the base plate 10 and the hinged end of the second bracket 52 to the keycap 70 are located at the same hinge point. side. When the keycap 70 is pressed, the first bracket 51 and the second bracket 52 can rotate relative to the keycap 70 and the base plate 10 respectively, and the first bracket 51 and the second bracket 52 also rotate relatively, thereby changing the height of the lifting bracket and realizing the key. The height of the cap 70 changes when it is pressed, and because one end of the first bracket 51 and the second bracket 52 are respectively hinged between the key cap 70 and the base plate 10, when the key cap 70 is pressed, the key cap 70 can be set along the There is a height change in the direction of .

The driving and locking assembly in this embodiment includes two parts, namely the first magnetic member 62 and the first magnetic absorbing member 61 , and the first magnetic absorbing member 61 can be attracted by the first magnetic member 62 . Wherein the first magnetic part 62 is a magnet, and the first magnetic adsorption part 61 can be prepared from materials such as iron, cobalt, nickel, etc. that are common in the prior art that can be adsorbed by magnets, and the first magnetic adsorption part 61 can be made as needed It is arranged in different shapes such as a frame shape, that is, the structure shown in Figure 1. At this time, the first magnetic adsorption part 61 is a bent frame shape, and the top of the frame shape has an opening, and the two sides of the opening It is connected with the key cap 70 as a rotating shaft. In the specific setting, the first magnetic part 62 is fixedly connected with the slide plate 30; the first end of the first magnetic adsorption part 61 is hinged with the keycap 70, and the second end is pressed against the substrate 10 and can slide relative to the substrate 10; When the circuit board 20 is set on the 10, the first magnetic adsorption part 61 is pressed against the circuit board 20. When the first magnetic adsorption part 61 is set, it should be noted that the first magnetic adsorption part 61 is between the substrate 10 and the When between the keycaps 70, no matter when the keycaps 70 are in a free state or a pressed state, the first magnetic adsorption member 61 is inclined. Specifically, as shown in FIG. 2 and FIG. 3 , in FIG. The placement direction of the button assembly is a reference direction, and the first magnetic adsorption member 61 is inclined relative to the vertical direction. When the first magnetic member 62 is installed, it is located on the side facing the oblique direction of the first magnetic adsorption member 61 . In addition, the magnetic force on the end of the first magnetic adsorption member 61 connected to the keycap 70 provided in this embodiment should be smaller than the magnetic force on the end of the first magnetic adsorption member 61 pressed against the substrate 10 , because the first magnetic member 62 produces The magnitude of the magnetic field will not change. Therefore, in specific settings, the metal content at both ends of the first magnetic member 62 should be different. Specifically, the metal content of the first end hinged with the keycap 70 is smaller than that of the first end that is pressed against the substrate 10. Metal content at both ends. In a specific manner, the first magnetic adsorption member 61 may include a plastic frame 40 , but an iron block is arranged on one end of the plastic frame 40 against the substrate 10 .

The sliding board 30 provided in this embodiment can slide relative to the base plate 10 . As shown in FIG. 1 , the sliding board 30 has a hollow structure in the middle, and the elevating bracket can pass through the hollow structure, and is not limited by the sliding board 30 when the elevating bracket moves. In order to ensure the sliding stability of the slide plate 30, the present embodiment provides a frame 40. Continue referring to FIG. 1, the frame 40 is provided with a through hole for the elevating bracket to pass through; when assembling, the elevating bracket passes through the through hole. Connected with the keycap 70 , the frame 40 is fixedly connected with the base plate 10 , and the slide plate 30 is slidably assembled on the frame 40 .

In order to facilitate the understanding of the lifting assembly 50 provided in this embodiment, the working principle of the key assembly will be described in detail below in conjunction with the structures shown in FIGS. 2 to 4 .

Referring first to FIG. 2 , FIG. 2 shows a schematic structural view of the keycap 70 in a free state. It can be seen from FIG. 2 that the first magnetic adsorption part 61 is in an inclined state, and at this time the slide plate 30 slides to the first set position. The first set position is such that the first magnetic part 62 is located between the first magnetic adsorption part 61 and Vertically below the hinged part of the keycap 70; the first magnetic member 62 is located on the inclined side of the first magnetic adsorption member 61, and under the adsorption of the first magnetic member 62, the first magnetic adsorption member 61 rotates (counterclockwise rotation) ), that is, the inclination angle of the first magnetic adsorption part 61 becomes smaller, and drives the first magnetic adsorption part 61 to rotate to provide support force for the keycap 70. At this time, the first magnetic part 62 and the first magnetic adsorption part 61 The second end is attracted to make the keycap 70 rise; as shown in Figure 3, when the external force presses the keycap 70, the external force overcomes the magnetic force between the first magnetic adsorption part 61 and the first magnetic part 62, and the first magnetic adsorption Part 61 rotates (rotates clockwise), as shown in Figure 3, the distance between the first magnetic part 62 and the first magnetic adsorption part 61 increases, becomes △, the keycap 70 is pressed, when the external force disappears , the first magnetic member 62 attracts the first magnetic adsorption member 61, so that the first magnetic adsorption member 61 rotates (rotates counterclockwise), and pushes the keycap 70 back to the position shown in FIG. 2 .

When the keycap 70 needs to be locked, as shown in Figure 4, slide the slide plate 30 so that the slide plate 30 slides from the first set position to the second set position, thereby changing the position of the first magnetic part 62, the first magnetic part 62 drives the first magnetic adsorption part 61 to rotate towards the direction close to the keycap 70, the first magnetic part 62 pushes the first magnetic adsorption part 61 to rotate (rotate clockwise), and the angle between the first magnetic adsorption part 61 and the substrate 10 becomes smaller , at this time, the first magnetic adsorption part 61 drives the keycap 70 to sink, and when the slide plate 30 is locked, the position of the first magnetic part 62 is locked, that is, the keycap 70 is locked.

It should be understood that the clockwise rotation and counterclockwise rotation described above are determined by the inclination direction of the first magnetic adsorption member 61 shown in FIG. 2 . When the inclination direction of the first magnetic adsorption member 61 changes, The direction of rotation also changes accordingly.

In addition, in the above-mentioned embodiment, when the slide plate 30 slides and locks, different structures can be used to realize it. Taking a notebook computer as an example, the driving part for sliding the slide plate 30 can be the rotating shaft of the screen. When the screen rotates to the open position, , the slide plate 30 slides to the first set position and locks, when the screen rotates to the closed position, the slide plate 30 slides to the second set position and locks; , the slide plate 30 slides and locks to the first set position, and when pulled to the second position, the slide plate 30 slides and locks to the second set position.

It can be seen from the above description that in this embodiment, the position control of the keycap 70 is realized through the driving and locking assembly. When the driving and locking assembly is in the driving position, it can provide a lifting force for the keycap 70, so that the keycap 70 can be used normally, and after being pressed, the lifting force returns to the initial position; when the driving and locking assembly is in the locked position, the keycap 70 can be pulled to sink to the position when the keycap 70 is pressed down, and the keycap 70 lock, at this time, the height of the entire keyboard can be reduced, thereby facilitating the thinning of the keyboard, and thus facilitating the thinning of the entire mobile terminal.

It should be understood that the setting position of the magnetic adsorption part is not only limited to the set position in FIG. 2 above, but other set positions can also be adopted. As a modification of this embodiment. The driving and locking assembly includes: a fourth magnetic member fixed on the slide plate 30, a third magnetic adsorption member fixed on the first bracket 51 at one end hinged with the base plate 10, and when specifically set, the first bracket 51 is provided with Groove, the third magnetic adsorption part is fixed in the groove; the setting method and structure of the fourth magnetic part are the same as the first magnetic part 62; the third magnetic adsorption part is the same as the first magnetic adsorption part 61, the only difference is that The fourth magnetic adsorption part is fixed on the first bracket 51. In specific use, when the slide plate 30 slides to the first set position, the fourth magnetic part is located on the first side of the first bracket 51 and absorbs the third magnetic adsorption part. Drive the first bracket 51 to rotate to provide support for the keycap 70; when the slide plate 30 slides to the second set position, the fourth magnetic part is located on the other side of the first bracket 51 and absorbs the third magnetic adsorption part, and the keycap 70 locks in position when pressed. In this specific driving and locking assembly, the function of controlling the keycap 70 to rise and locking the keycap 70 is achieved by adjusting the fourth magnetic member to be on different sides of the first bracket 51 , that is, to be on different sides of the third magnetic adsorption member.

Example 2

As shown in FIG. 5 , the structure of the substrate 10 and the keycap 70 in the button assembly provided by this embodiment is the same as that of the button assembly in Embodiment 1, and the structures of the slide plate 30 and the lifting bracket in the lifting assembly 50 are also the same. The only differences are the drive and locking components.

In this embodiment, the driving and locking assembly includes: the second magnetic part 64 and the second magnetic adsorption part fixed on the slide plate 30, and the third magnetic part 63 fixed on the keycap 70; The drive and lock assembly consists of two opposing magnetic pieces. Wherein, the third magnetic component 63 is fixed on the keycap 70 , and the second magnetic component 64 is fixed on the slide plate 30 . When the keycap 70 is in a free state, the supporting force of the keycap 70 is provided by the repulsive force between the second magnetic part 64 and the third magnetic part 63; The suction force of the second magnetic adsorption part is used to lock.

In order to facilitate understanding of the key assembly provided in this embodiment, the principle of the driving and locking assembly provided in this embodiment will be described in detail below.

As shown in FIG. 6, FIG. 6 shows a schematic diagram of the structure of the keycap 70 in a free state; The properties are the same, at this time, the third magnetic adsorption part is close to the second magnetic part 64, and the attraction force between the third magnetic adsorption part and the second magnetic adsorption part is smaller than the repulsive force between the third magnetic part 63 and the second magnetic part 64, and the key The cap 70 is pushed up; in addition, in order to improve the repulsion force between the second magnetic piece 64 and the third magnetic piece 63, when the magnetic piece is specifically arranged, the third magnetic piece 63 has a first inclined surface, and the second magnetic piece 64 has a A second inclined surface, and the first inclined surface is opposite to the second inclined surface. By using two inclined surfaces oppositely arranged, and the opposite inclined surfaces have the same polarity, it is ensured that a larger repulsive force can be provided.

As shown in Figure 7, when the keycap 70 is pressed by the hand, the repulsive force between the third magnetic part 63 and the second magnetic part 64 is overcome, and the keycap 70 is pressed down. Under the action of the repulsive force between the third magnetic member 64 and the third magnetic member 63, the keycap 70 rises.

As shown in Figure 8, when the slide plate 30 slides to the second set position, the third magnetic part 63 is close to the second magnetic adsorption part and away from the second magnetic part 64. At this moment, the third magnetic part 63 and the second magnetic part 64 The repulsive force between them is smaller than the adsorption force of the third magnetic part 63 to the second magnetic adsorption part, and through the adsorption force between the third magnetic part 63 and the second magnetic adsorption part, the keycap 70 is locked in the position when it is pressed .

In order to simplify the structure of the whole device, in a specific embodiment, the sliding plate 30 is a plate-like structure made of magnetic adsorption material, and the second magnetic adsorption member is integrated with the sliding plate 30 . That is, at this time, the slide plate 30 is the second magnetic adsorption member, thereby simplifying the structure of the entire device.

It can be seen from the above description that in this embodiment, by adjusting the position of the second magnetic piece 64, when the second magnetic piece 64 and the third magnetic piece 63 are repelled, the keycap 70 is provided with a rising force, and the second magnetic piece When the keycap 64 is adsorbed to the second magnetic adsorption part, the keycap 70 is locked at the pressed position.

Example 3

As shown in Figure 9, Figure 9 shows a schematic structural view of the key assembly provided in this embodiment. In this embodiment, the structures of the substrate 10 and the keycap 70 in the key assembly provided in this embodiment are the same as those in Embodiment 1. The structure of the button assembly is the same, and the structures of the slide plate 30 and the lifting bracket in the lifting assembly 50 are also the same, and the only difference is the driving and locking assembly.

The driving and locking assembly provided in this embodiment is a part, which is an elastic connector 65, one end of the elastic connector 65 is connected to the slide plate 30, and the other end is connected to the end of the second bracket 52 that is slidably connected to the base plate 10; as shown in the figure As shown in 10, FIG. 10 shows a reference diagram of the use state of the elastic connector 65. At this time, the keycap 70 is in a free state, the slide plate 30 slides to the first set position, and the elastic connector 65 pushes the second bracket 52 to slide. And provide support for the keycap 70; as shown in Figure 11, Figure 11 shows the state when the keycap 70 is pressed, when the hand is pressed onto the keycap 70, the end of the second bracket 52 that is in contact with the substrate 10 slides , the elastic connecting member 65 is elastically deformed, when the hand leaves the keycap 70, under the restoring force of the elastic connecting member 65, the second bracket 52 is pushed to slide, and the keycap 70 begins to rise. In a specific configuration, the elastic connecting member 65 can be different elastic components, such as rubber strips, springs (extension springs or compression springs), shrapnel or an elastic structure on the sliding plate 30 or the second bracket 52 . When using extension spring or rubber strip, when keycap 70 is pressed, extension spring or rubber strip is stretched, when adopting compression spring or rubber strip, when keycap 70 is pressed, stage clip or rubber strip is compressed; It is understood that, when different elastic connectors 65 are used, the connection position between the elastic connector 65 and the sliding board 30 and the sliding direction of the sliding board 30 can be changed accordingly according to actual needs.

As shown in FIG. 12, FIG. 12 shows a schematic diagram of the state when the keycap 70 is locked. When the slide plate 30 slides to the second set position, the elastic connecting member 65 pulls the second bracket 52 to lock the keycap 70 when it is pressed. time position. That is, the keycap 70 is locked at the set position through the elastic connecting member 65 .

It can be seen from the above description that the driving and locking assembly provided by this embodiment has a simple structure and can provide enough elastic force to realize the effect on the keycap 70 .

It should be understood that the above-mentioned embodiment 1, embodiment 2 and embodiment 3 only show several specific embodiments of the key assembly provided by the embodiment of the present invention, and the lifting assembly 50 of the key assembly provided by this embodiment is not limited to The structures listed in the above-mentioned specific embodiments, any button assembly designed with a similar principle can be applied to the embodiments of the present invention.

An embodiment of the present invention also provides a keyboard, which includes a casing and a plurality of the above-mentioned key assemblies arranged in the casing.

This keyboard is the keyboard on the notebook computer, and adopts above-mentioned key assembly in this keyboard, because this key assembly realizes the position control to keycap 70 through driving and locking assembly, when driving and locking assembly is positioned at driving work position, can Provide lifting force to the keycap 70, so that the keycap 70 can be used normally. After being pressed, the lifting force returns to the initial position; when the driving and locking assembly is in the locked position, the keycap 70 can be pulled to sink to the keycap 70 When the keycap 70 is locked, the height of the entire keyboard can be reduced, thereby facilitating the thinning of the keyboard, and further facilitating the thinning of the entire mobile terminal.

In the specific setting, there are multiple case components on the keyboard. When multiple key components are used, the substrates 10 of the multiple key components are of an integrated structure, and the slide plate 30 is of an integrated structure, so that when the entire keyboard is in use, the keycap 70 can be in the same working condition.

The embodiment of the present invention also provides a mobile terminal, the mobile terminal includes a host, and a keyboard connected to the host, wherein the keyboard includes a casing, and a plurality of the above-mentioned key assemblies arranged in the casing.

In a specific embodiment, the mobile terminal is a notebook computer. In the above-mentioned embodiments, the position control of the keycap 70 is realized through the driving and locking assembly. When the driving and locking assembly is located at the driving position, it can provide a lifting force for the keycap 70, so that the keycap 70 can be used normally. After being pressed down, the lifting force returns to the initial position; when the driving and locking assembly is in the locked position, the keycap 70 can be pulled to sink to the position when the keycap 70 is pressed down, and the keycap 70 is locked. At this time, the entire The height of the keyboard can be reduced, thereby facilitating the thinning of the keyboard, and further facilitating the thinning of the entire mobile terminal.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (13)

1. A key assembly, comprising: base plate, key cap and be used for the drive the lift subassembly that the key cap ascended, lift subassembly includes: the lifting support is hinged with the keycap and the base plate respectively; the sliding plate can slide relative to the base plate and can be locked at a set position; the driving and locking assembly is connected with the sliding plate and the keycap or the lifting support; wherein,

when the sliding plate is locked to a first set position, the driving and locking assembly is in a driving working position and provides upward supporting force for the keycap; when the slide plate is in the second set position, the driving and locking assembly is in the locking working position and locks the keycap at the position when the keycap is pressed.

2. The key assembly of claim 1, wherein the drive and lock assembly and the lift bracket are disposed in a side-by-side arrangement between the key cap and the base plate.

3. The key assembly of claim 1, wherein the lifting bracket is configured to define a direction and distance of movement of the key cap.

4. A key assembly as recited in any one of claims 1-3, wherein the actuating and locking assembly comprises: the first magnetic part is fixedly connected with the sliding plate, the first magnetic part is obliquely arranged, the first end of the first magnetic part is hinged with the keycap, and the second end of the first magnetic part is pressed on the substrate and can slide relative to the substrate; wherein,

when the sliding plate slides to the first set position, the first magnetic part is attracted with the second end of the first magnetic adsorption part and drives the first magnetic adsorption part to rotate to provide supporting force for the keycap so as to lift the keycap; when the slide slides to the second set position, the first magnetic part drives the first magnetic adsorption part to move, so that the included angle between the first magnetic adsorption part and the substrate is reduced, and the keycap is locked at the position when the keycap is pressed.

5. A key assembly as recited in any one of claims 1-3, wherein the actuating and locking assembly comprises: the second magnetic part and the second magnetic adsorption part are fixed on the sliding plate, and the third magnetic part is fixed on the keycap;

when the sliding plate slides to a first set position, the polarities of the opposite magnetic poles of the second magnetic piece and the third magnetic piece are the same, and a lifting supporting force is provided for the keycap; when the sliding plate slides to a second set position, the repulsive force between the third magnetic piece and the second magnetic piece is smaller than the attractive force of the third magnetic piece to the second magnetic attraction piece, and the keycap is locked at the position when being pressed.

6. The key assembly of claim 5, wherein the sliding plate is a plate-shaped structure made of a magnetic absorption material, and the second magnetic absorption member and the sliding plate are an integral structure.

7. The key assembly of claim 5, wherein the third magnetic member has a first inclined surface, the second magnetic member has a second inclined surface, and the first inclined surface is opposite to the second inclined surface.

8. The key assembly of claim 3, wherein the lifting bracket comprises a first bracket and a second bracket hinged together, and the first bracket and the second bracket are hinged together in an X shape; wherein,

one end of the first support is hinged to the base plate, the other end of the first support is connected with the key cap in a sliding mode, one end of the second support is connected with the base plate in a sliding mode, the other end of the second support is hinged to the key cap, and the first support, one end of the base plate, one end of the second support and one end of the second support, hinged to the key cap, are located on the same side of a hinge point.

9. The key assembly of claim 8, wherein the driving and locking assembly is an elastic connecting member, one end of the elastic connecting member is connected to the sliding plate, and the other end of the elastic connecting member is connected to one end of the second bracket slidably connected to the base plate; when the sliding plate slides to a first set position, the elastic connecting piece pushes the second support to slide and provide supporting force for the keycap; when the sliding plate slides to the second set position, the elastic connecting piece pulls the second support to lock the keycap at the position when the keycap is pressed.

10. A key assembly as recited in claim 9, wherein the resilient connecting member is a rubber strip, a spring, a leaf spring, or a resilient structure on the slide plate and the second bracket.

11. The key assembly of claim 1, further comprising a frame fixedly connected to the base plate, wherein the frame is provided with a through hole for the lifting bracket to pass through; the slide plate is slidably connected with the frame.

12. A keyboard comprising a casing, and a plurality of key assemblies as claimed in any one of claims 1 to 11 disposed in the casing.

13. A mobile terminal, comprising a host and a keyboard connected to the host, wherein the keyboard comprises a casing and a plurality of key assemblies according to any one of claims 1 to 11 disposed in the casing.