Key assembly and terminal device

Abstract

A key assembly can move along a pressing direction, the key assembly comprises a key, and a first contact part, a first hanging lug, a second contact part and a second hanging lug which are positioned on the same side of the key, and the first contact part, the first hanging lug, the second hanging lug and the second contact part are arranged along a direction perpendicular to the pressing direction according to a sequence. The first contact part and the second contact part are arranged on the outer sides of the first hanging lug and the second hanging lug, so that the possibility that a user presses a key corresponding to the first contact part to the edge of the key and the possibility that the user presses a key corresponding to the second contact part to the edge of the key can be reduced; besides, when the edge area of the key is pressed, the stress of the first hanging lug and the second hanging lug can be reduced, so that the fatigue failure caused by breakage of the first hanging lug or the second hanging lug can be effectively improved. The utility model further provides a terminal device.

Description

Technical Field

[0001] The present application relates to the field of mechanics, and in particular to a key assembly and a terminal device. Background Art

[0002] At present, mobile phones, tablet computers and other terminal devices are generally provided with buttons such as power buttons or volume buttons to facilitate turning on, off or adjusting the volume of the terminal device. In the related art, the buttons of the terminal device are prone to breakage after long-term use. Utility Model Content

[0003] In view of this, it is necessary to provide a key assembly and a terminal device with good anti-fatigue failure performance to solve the above problems.

[0004] In a first aspect, the present application provides a key assembly that can move along a pressing direction, the key assembly comprising a key, a first contact portion, a first hanging ear, a second contact portion, and a second hanging ear, the first contact portion, the first hanging ear, the second contact portion, and the second hanging ear being located on the same side of the key; along a direction perpendicular to the pressing direction, the first contact portion, the first hanging ear, the second hanging ear, and the second contact portion are arranged in the order of the first contact portion, the first hanging ear, the second hanging ear, and the second contact portion.

[0005] In the above design, the first contact portion and the second contact portion are arranged on the outside of the first hanging ear and the second hanging ear, which can reduce the possibility of the user pressing the key corresponding to the first contact portion to the edge of the key and reduce the possibility of the user pressing the key corresponding to the second contact portion to the edge of the key; in addition, when pressing the edge area of ​​the key, the stress of the first hanging ear and the second hanging ear can be reduced, thereby effectively improving the fatigue failure caused by the breakage of the first hanging ear or the second hanging ear.

[0006] In a possible implementation of the present application, the key assembly includes a key, a first connecting member, and a second connecting member. The key includes a pressing portion, a first extending portion, and a second extending portion, wherein the first extending portion and the second extending portion are connected to the pressing portion and both extend along a pressing direction; the first connecting member is sleeved on the surface of the first extending portion, and the first connecting member includes a first hanging ear and a first contact portion; the second connecting member is sleeved on the surface of the second extending portion, and the second connecting member includes a second hanging ear and a second contact portion.

[0007] In the above design, the first connector is sleeved on the first extension part, and the second connector is sleeved on the second extension part, which can effectively increase the connection area between the key and the first connector and the second connector, thereby increasing the bonding strength between the key and the first connector and the second connector; in addition, the path for glue to enter between the key and the first connector and the second connector can be increased, thereby increasing the difficulty of glue corrosion and improving the corrosion resistance of the key assembly; furthermore, the separation mode between the key and the first connector and the second connector is a shear mode, further reducing the risk of separation between the key and the first connector and the second connector. By increasing the connection area between the key and the first connector and the second connector, the fatigue failure caused by the separation of the key and the first connector and the second connector can be effectively improved.

[0008] In a possible embodiment of the present application, the first connecting member also includes a first groove portion, the first extension portion is located in the first groove portion, and the first hook protrudes relative to the first groove portion in a direction perpendicular to the pressing direction; the second connecting member also includes a second groove portion, the second extension portion is located in the second groove portion, and the second hook protrudes relative to the second groove portion in a direction perpendicular to the pressing direction.

[0009] In the above design, the structural design of the first hanging ear and the second hanging ear can be used to limit the button assembly to prevent the button assembly from falling off.

[0010] In a possible implementation of the present application, the button assembly further includes a supporting rib, the supporting rib includes a fixing portion and a supporting portion, the fixing portion is fixed on the pressing portion, and the supporting portion is located between the first extension portion and the second extension portion and extends along the pressing direction.

[0011] In the above design, the supporting ribs can prevent the button assembly from shaking.

[0012] In the second aspect, the embodiment of the present application provides a terminal device, including a housing, a key assembly, a first switch and a second switch. The key assembly is located in the housing and can move relative to the housing in a pressing direction. The key assembly includes a key, a first contact portion, a first hanging ear, a second contact portion and a second hanging ear. The first contact portion, the first hanging ear, the second contact portion and the second hanging ear are located on the same side of the key; along a direction perpendicular to the pressing direction, they are arranged in the order of the first contact portion, the first hanging ear, the second hanging ear and the second contact portion; the first switch is transmission-connected to the first contact portion; the second switch is transmission-connected to the second contact portion.

[0013] In the above design, the first contact portion and the second contact portion are arranged on the outside of the first hanging ear and the second hanging ear, which can reduce the possibility of the user pressing the key corresponding to the first contact portion to the edge of the key and reduce the possibility of the user pressing the key corresponding to the second contact portion to the edge of the key; in addition, when pressing the edge area of ​​the key, the stress of the first hanging ear and the second hanging ear can be reduced, thereby effectively improving the fatigue failure caused by the breakage of the first hanging ear or the second hanging ear.

[0014] In a possible implementation of the present application, the key assembly includes a key, a first connecting member, and a second connecting member. The key includes a pressing portion, a first extending portion, and a second extending portion, wherein the first extending portion and the second extending portion are connected to the pressing portion and both extend in a pressing direction; the first connecting member is sleeved on the surface of the first extending portion, and the first connecting member includes a first hanging ear and a first contact portion; the second connecting member is sleeved on the surface of the second extending portion, and the second connecting member includes a second hanging ear and a second contact portion.

[0015] In the above design, by increasing the connection area between the button and the first connecting member and the second connecting member, fatigue failure caused by the separation of the button and the first connecting member and the second connecting member can be effectively improved.

[0016] In a possible embodiment of the present application, the first connecting member also includes a first groove portion, the first extension portion is located in the first groove portion, and the first hook protrudes relative to the first groove portion in a direction perpendicular to the pressing direction; the second connecting member also includes a second groove portion, the second extension portion is located in the second groove portion, and the second hook protrudes relative to the second groove portion in a direction perpendicular to the pressing direction.

[0017] In the above design, the structural design of the first hanging ear and the second hanging ear can be used to limit the button assembly to prevent the button assembly from falling off.

[0018] In a possible embodiment of the present application, the shell is provided with a first receiving groove, a first through hole, a second through hole, and a second receiving groove, the first through hole connects the first receiving groove and the second receiving groove, and the second through hole connects the first receiving groove and the second receiving groove; the pressing portion is located in the first receiving groove, the first extension portion passes through the first through hole, the second extension portion passes through the second through hole, and the first hanging ear, the second hanging ear, the first switch, and the second switch are located in the second receiving groove.

[0019] In the above design, the button assembly can be movably arranged in the shell through the structural design of the shell.

[0020] In a possible embodiment of the present application, the shell includes a transverse partition, and the first through hole and the second through hole penetrate the transverse partition; the button assembly also includes a supporting rib, the supporting rib is elastic, and the supporting rib includes a fixed part and a supporting part, the fixed part is fixed on the pressing part, and the supporting part is located between the first extension part and the second extension part, and the supporting part extends from one side of the fixed part toward the transverse partition and abuts against the surface of the transverse partition.

[0021] In the above design, when the key is not pressed, the support part is in a compressed state to abut against the transverse partition, so that there are opposing forces between the key and the transverse partition. When the key is not pressed, the key can be prevented from shaking along the pressing direction; when the key is pressed, the support part is further compressed, and there is a greater friction force between the support part and the transverse partition. When the key is pressed, the shaking of the key in a direction perpendicular to the pressing direction can be improved.

[0022] In a possible implementation manner of the present application, the supporting ribs, the first connecting member and the second connecting member are all made of soft rubber.

[0023] In the above design, the soft rubber material makes the supporting ribs, the first connecting member and the second connecting member all have a certain elasticity.

[0024] In a possible implementation manner of the present application, the hardness of the button is greater than the hardness of the first connecting member, and the hardness of the button is greater than the hardness of the second connecting member.

[0025] In the above design, when the button is pressed, the button can drive the first connecting member and the second connecting member 35 to move synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application.

[0027] Figure 2 for Figure 1 Exploded view of the terminal device.

[0028] Figure 3 for Figure 1 An exploded view of area A of the terminal device is shown.

[0029] Figure 4 for Figure 1 The schematic cross-sectional view of region A of the terminal device along direction BB is shown.

[0030] Figure 5 for Figure 1 A schematic cross-sectional view of some components of the A region of the terminal device is shown.

[0031] Figure 6 A schematic structural diagram of a key assembly provided in another embodiment of the present application.

[0032] Figure 7 For pressing Figure 6 The stress distribution diagram of the key assembly is shown.

[0033] Figure 8 for Figure 6 Schematic diagram of the equivalent mechanical analysis of the key component.

[0034] Main component symbols

[0035]

[0036] DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth to facilitate a full understanding of the present application, and the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this article are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes all and any combination of one or more related listed items.

[0039] In the embodiments of the present application, for the convenience of description and not to limit the present application, the term "connection" used in the patent application specification and claims of the present application is not limited to physical or mechanical connection, whether direct or indirect. "Up", "down", "above", "below", "left", "right", etc. are only used to indicate relative position relationship. When the absolute position of the described object changes, the relative position relationship also changes accordingly.

[0040] See also Figure 1 , Figure 1 This is a structural diagram of a terminal device 100 provided in an embodiment of the present application. The terminal device 100 includes but is not limited to mobile phones, tablet computers, laptop computers, cameras, wearable devices, and other products with a button component 30, wherein the wearable devices include but are not limited to smart bracelets, smart watches, smart glasses, etc.

[0041] In this embodiment, the terminal device 100 is described as a mobile phone. The mobile phone is roughly in the shape of a rectangular plate. For ease of description, an XYZ coordinate system is established, and the width direction of the mobile phone is defined as the X-axis direction, the length direction of the mobile phone is defined as the Y-axis direction, and the thickness direction of the mobile phone is defined as the Z-axis direction. It can be understood that the coordinate system setting of the terminal device 100 can be flexibly set according to actual needs, and no specific limitation is made here. In some other embodiments, the shape of the terminal device 100 can also be a square flat plate, a circular flat plate, an elliptical flat plate, etc., which are not specifically limited here.

[0042] See also Figure 2 , the terminal device 100 may include a screen 10, a housing 20 and a button assembly 30. In this embodiment, only some components of the terminal device 100 are shown by way of example, rather than all components. For example, the terminal device 100 may also include components such as a battery and a lens module. In addition, in other embodiments, the specific components of the terminal device 100 may be changed accordingly according to the name and relative position of the specific terminal device 100.

[0043] The screen 10 is used to display images, videos, etc. The screen 10 may include a cover plate 11 and a display screen 13. The cover plate 11 and the display screen 13 are stacked. The cover plate 11 is mainly used to protect and dustproof the display screen 13. The material of the cover plate 11 includes but is not limited to glass. The display screen 13 may be a flexible display screen or a rigid display screen, and may be a flat screen or a curved screen. The display screen 13 may be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (miniorganic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, a quantum dot light emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0044] The housing 20 is used to protect the components inside the terminal device 100. The housing 20 may include a back cover 21 and a frame 23. The back cover 21 is located on the side of the display screen 13 away from the cover plate 11, and is stacked and spaced with the cover plate 11 and the display screen 13. The frame 23 is located between the back cover 21 and the cover plate 11. The frame 23 is fixed to the back cover 21. In some embodiments, the frame 23 can be fixedly connected to the back cover 21 by means of adhesive, snap-on, etc. In other examples, the frame 23 can also be an integrally formed structure with the back cover 21, that is, the frame 23 and the back cover 21 are a structural member. The cover plate 11 can be bonded to the frame 23 by colloid. The cover plate 11, the back cover 21 and the frame 23 enclose the accommodation space of the terminal device 100. The accommodation space can accommodate the display screen 13, and can also be used to accommodate components such as batteries and lens modules.

[0045] In some embodiments, the housing 20 may further include a middle plate 25. The middle plate 25 is disposed in the accommodating space, and the middle plate 25 is located on the side of the display screen 13 away from the light-transmitting cover plate 11. The edge of the middle plate 25 is fixed to the frame 23. In some examples, the edge of the middle plate 25 is bonded to the frame 23 by a colloid. In other examples, the middle plate 25 may also be an integrally formed structure with the frame 23, that is, the middle plate 25 and the frame 23 are a structural member, and the whole formed by connecting the middle plate 25 and the frame 23 is also called a middle frame.

[0046] Please also read Figure 3 , Figure 3 for Figure 1 The exploded view of the A area of ​​the terminal device 100 shown in FIG. The terminal device 100 may also include a circuit board 60, which is fixed inside the terminal device 100. The main part of the circuit board 60 is located between the middle plate 25 and the back cover 21 and is fixed on the middle plate 25. The circuit board 60 may also extend to the area where the key assembly 30 is located and is electrically connected to the key assembly 30. The circuit board 60 may be formed by a circuit board or by a plurality of sub-circuit boards connected to each other. In some other embodiments, when the housing 20 of the terminal device 100 does not include the middle plate 25, the circuit board 60 may also be fixed on the surface of the display screen 13 close to the back cover 21. The circuit board 60 may be a flexible circuit board, a rigid circuit board or a rigid-flexible board. Electronic components (not shown) may also be arranged on the circuit board 60 and electrically connected to the electronic components. Among them, the electronic components may be, for example, a central processing unit (CPU), a graphics processing unit (GPU), a universal flash storage (UFS), a handset, a lens module or a flash module.

[0047] The key assembly 30 is used to input instructions, and the circuit board 60 is used to control the internal functional elements of the terminal device 100 according to the instructions input by the key assembly 30. The key assembly 30 can be a volume key assembly, and the volume of the sound of the terminal device 100 can be adjusted by triggering the key assembly 30. The key assembly 30 can also be a power key assembly, and the terminal device 100 can be turned on, off, locked, or awakened by triggering the key assembly 30.

[0048] The key assembly 30 can be arranged on the side or top edge of the frame 23 to serve as a side key or a top key. The number of the key assembly 30 can be one or more. Figure 1 and Figure 2 In the illustrated embodiment, the number of the key components 30 is two, and the two key components 30 are arranged at intervals along the Y-axis direction as side keys. Of the two key components 30, one key component 30 is a volume key component, and the other key component 30 is a power key component. In some other embodiments, the volume key component and the power key component can also be used as two top keys, arranged at intervals along the X-axis direction. In some other embodiments, one of the volume key component and the power key component can also be used as a side key and the other as a top key, which is not limited in this application.

[0049] See also Figure 4 and Figure 5 , and combined with Figures 1 to 3 , Figure 4 for Figure 1 The schematic cross-sectional view of the A region of the terminal device 100 along the BB direction is shown in FIG. Figure 5 for Figure 1 A schematic cross-sectional view of some components of the A region of the terminal device 100 is shown. A first receiving groove 231 is provided on the outer surface of the frame 23, and the first receiving groove 231 has an opening 2311 and a first bottom wall 2312 that are arranged opposite to each other, and the opening 2311 and the first bottom wall 2312 are arranged along the pressing direction of the key assembly 30. In this embodiment, the first receiving groove 231 is provided on the side of the terminal device 100 extending along the Y-axis direction, and the pressing direction of the key assembly 30 is the X-axis direction, that is, the opening 2311 and the first bottom wall 2312 are arranged along the X-axis direction, and the first bottom wall 2312 is located in the YZ plane (i.e., the plane determined by the Y-axis direction and the Z-axis direction).

[0050] The frame 23 includes a transverse partition 238, and one surface of the transverse partition 238 is the first bottom wall 2312. The frame 23 is also provided with a first through hole 233 and a second through hole 235, both of which extend from the first bottom wall 2312 along the X-axis direction in a direction away from the first receiving groove 231 and penetrate the transverse partition 238, and the first through hole 233 and the second through hole 235 are arranged in a direction perpendicular to the pressing direction. In this embodiment, the first through hole 233 and the second through hole 235 are arranged in the Y-axis direction and are spaced apart.

[0051] The frame 23 is also provided with a second receiving groove 237, which is connected to the first receiving groove 231 through the first through hole 233 and the second through hole 235. The second receiving groove 237 has a top wall 2372 and a second bottom wall 2374 arranged opposite to each other, and the first bottom wall 2312, the top wall 2372 and the second bottom wall 2374 are arranged along the pressing direction of the key assembly 30. In this embodiment, the first bottom wall 2312, the top wall 2372 and the second bottom wall 2374 are arranged along the X-axis direction, and the top wall 2372 is the surface of the transverse partition 238 away from the first bottom wall 2312. In other embodiments, the first receiving groove 231, the first through hole 233, the second through hole 235 and the second receiving groove 237 can also be provided on the top edge or the bottom edge of the terminal device 100 extending along the X-axis direction, and the pressing direction of the key assembly 30 is the Y-axis direction. In other embodiments, the first receiving groove 231 , the first through hole 233 , the second through hole 235 and the second receiving groove 237 may also be provided on the back cover 21 of the terminal device 100 , and the pressing direction of the button assembly 30 is the Z-axis direction.

[0052] The button assembly 30 may include a button 31, a first connecting member 33, and a second connecting member 35. A portion of the button 31 is located in the first receiving groove 231, and can move relative to the housing 20 in the pressing direction. The first connecting member 33 and the second connecting member 35 are fixed to the button 31 and are partially located in the second receiving groove 237. The first connecting member 33 and the second connecting member 35 can be connected to the housing 20 by a snap-fitting manner. Among them, the first bottom wall 2312 can serve as a stop for the button 31. When the button 31 is pressed to a certain extent, the button 31 contacts the first bottom wall 2312, limiting the button 31 from further moving in the pressing direction.

[0053] In this embodiment, the button 31 includes a pressing portion 312, a first extension portion 314, and a second extension portion 316. The pressing portion 312 is generally in the shape of a rectangular flat plate, the length direction of the pressing portion 312 is parallel to the Y-axis direction, the width direction of the pressing portion 312 is parallel to the Z-axis direction, and the thickness direction of the pressing portion 312 is parallel to the X-axis direction. The pressing portion 312 includes a pressing surface 3122 and a connecting surface 3124 that are arranged back to back and along the pressing direction. The pressing surface 3122 is exposed to the opening 2311, and the user can apply a pressing force to the pressing surface 3122 to move the button 31 along the pressing direction; when the button 31 is pressed to a certain extent, the connecting surface 3124 can contact the first bottom wall 2312. The first extension portion 314 and the second extension portion 316 are both fixed on the connecting surface 3124. The first extension portion 314 passes through the first through hole 233 from the first receiving groove 231, and the second extension portion 316 passes through the second through hole 235 from the first receiving groove 231. The first extension portion 314 and the second extension portion 316 are spaced apart in a direction perpendicular to the pressing direction. In this embodiment, the first extension portion 314 and the second extension portion 316 are spaced apart in the Y-axis direction in the region near the end of the pressing portion 312, and the two ends of the pressing portion 312 protrude along the Y-axis direction relative to the corresponding first extension portion 314 and the second extension portion 316.

[0054] In this embodiment, the first extension portion 314 is substantially concave on one side away from the pressing portion 312, and the second extension portion 316 is substantially concave on one side away from the pressing portion 312. In other embodiments, the shapes of the first extension portion 314 and the second extension portion 316 are not limited.

[0055] The material of the button 31 can be hard plastic, metal, etc., and the button 31 can be integrally formed by injection molding. The pressing force is usually directly applied to the surface of the button 31. The material of the button 31 has a large hardness, which can increase the service life of the button assembly 30. In some embodiments, a coating can also be formed on the pressing surface 3122, which can be used to prevent wear, improve appearance, etc.

[0056] The first connecting member 33 includes a first groove portion 332, a first groove 3324 is formed on the first groove portion 332, the shape of the first groove 3324 matches the shape of the first extension portion 314, the first extension portion 314 is located in the first groove 3324, and the first connecting member 33 is sleeved on the surface of the first extension portion 314. The second connecting member 35 includes a second groove portion 352, a second groove 3524 is formed on the second groove portion 352, the shape of the second groove 3524 matches the shape of the second extension portion 316, the second extension portion 316 is located in the second groove 3524, and the second connecting member 35 is sleeved on the surface of the second extension portion 316. By arranging the first extension portion 314 and the second extension portion 316 on the key 31, and connecting the first connecting member 33 to the first extension portion 314 and the second connecting member 35 to the second extension portion 316, the connection area between the key 31 and the first connecting member 33 and the second connecting member 35 can be effectively increased.

[0057] Since the terminal device 100 (such as a mobile phone) is usually required to attach a tempered film to the surface of the screen 10 during use, glue (such as UV light-curing glue) is used in the process of attaching the tempered film. The glue has good fluidity and is easy to penetrate into the gap between the key assembly 30 and the housing 20 to corrode the key assembly 30, thereby causing the key 31 to fall off. In this embodiment, by increasing the connection area between the key 31 and the first connecting member 33 and the second connecting member 35, the bonding strength between the key 31 and the first connecting member 33 and the second connecting member 35 can be increased; in addition, the path for the glue to enter between the key 31 and the first connecting member 33 and the second connecting member 35 can be increased, thereby increasing the difficulty of glue corrosion and improving the corrosion resistance of the key assembly 30; further, the separation mode between the key 31 and the first connecting member 33 and the second connecting member 35 is a shear mode (if there is no first extension 314 and the second extension 316, it is a peeling mode), which further reduces the risk of the key 31 being separated from the first connecting member 33 and the second connecting member 35. By increasing the connection area between the button 31 and the first connecting member 33 and the second connecting member 35 , fatigue failure caused by the separation of the button 31 and the first connecting member 33 and the second connecting member 35 can be effectively improved.

[0058] The first connecting member 33 can be fixed to the first extension portion 314 by bonding, clamping, injection molding, etc., and the second connecting member 35 can be fixed to the second extension portion 316 by bonding, clamping, injection molding, etc. The surface of the first extension portion 314 and the second extension portion 316 can be a smooth surface or a rough surface, and uneven grooves can be formed on the surface of the first extension portion 314 and the second extension portion 316 to further increase the surface roughness of the first extension portion 314 and the second extension portion 316. When the surface roughness of the first extension portion 314 and the second extension portion 316 increases, the bonding force between the first extension portion 314 and the first connecting member 33 can be increased, and the bonding force between the second extension portion 316 and the second connecting member 35 can be increased.

[0059] The first connector 33 may further include a first contact portion 334 and a first hanging ear 336, which are connected to the surface of the first groove portion 332 away from the first groove portion 332 and provided with the first groove 3324. The first contact portion 334 and the first hanging ear 336 are arranged at intervals in a direction perpendicular to the pressing direction. In this embodiment, the first contact portion 334 and the first hanging ear 336 are arranged at intervals in the Y-axis direction, and the first contact portion 334 and the first hanging ear 336 protrude in a direction away from the first groove portion 332; the first contact portion 334 is located on the side of the first hanging ear 336 away from the second connector 35. The second connector 35 may further include a second contact portion 354 and a second hanging ear 356, which are connected to the surface of the second groove portion 352 away from the second groove portion 352 and provided with the second groove 3524. The second contact portion 354 and the second hanging ear 356 are arranged at intervals in a direction perpendicular to the pressing direction. In this embodiment, the second contact portion 354 and the second hanging ear 356 are arranged at intervals in the Y-axis direction. The second contact portion 354 and the second hanging ear 356 protrude in a direction away from the second groove portion 352. The second contact portion 354 is located on a side of the second hanging ear 356 away from the first connecting member 33. That is, along the Y-axis direction, the first contact portion 334, the first hanging ear 336, the second hanging ear 356 and the second contact portion 354 are arranged in sequence, that is, relatively speaking, the first contact portion 334 and the second contact portion 354 are located on the outside, and the first hanging ear 336 and the second hanging ear 356 are located on the inside.

[0060] The first groove portion 332 passes through the first through hole 233, and the first contact portion 334 and the first hanging ear 336 are located in the second receiving groove 237. The first hanging ear 336 protrudes relative to the first groove portion 332 in a direction perpendicular to the pressing direction. In this embodiment, the first hanging ear 336 protrudes relative to the first groove portion 332 in the Z-axis direction. The second groove portion 352 passes through the second through hole 235, and the second contact portion 354 and the second hanging ear 356 are located in the second receiving groove 237. The second hanging ear 356 protrudes relative to the second groove portion 352 in a direction perpendicular to the pressing direction. In this embodiment, the second hanging ear 356 protrudes relative to the second groove portion 352 in the Z-axis direction. When the button 31 is not pressed, the first hanging ear 336 and the second hanging ear 356 can both abut against the top wall 2372, and the diaphragm 238 can be used to prevent the first connecting member 33 and the second connecting member 35 from falling off from the frame 23, thereby preventing the button 31 from falling off from the frame 23; when the button 31 is pressed, the diaphragm 238 can block the first hanging ear 336 or the second hanging ear 356. The first connecting member 33 and the second connecting member 35 have a certain elasticity, and the material of the first connecting member 33 and the second connecting member 35 can be soft rubber, which can play a buffering role when interacting with the diaphragm 238; the hardness of the button 31 is greater than the hardness of the first connecting member 33, and the hardness of the button 31 is greater than the hardness of the second connecting member 35. When the button 31 is pressed, the button 31 can drive the first connecting member 33 and the second connecting member 35 to move synchronously.

[0061] The terminal device 100 may further include a first switch 40 and a second switch 50, both of which are electrically connected to the circuit board 60 and are transmission-connected to the button 31 through the first connector 33 and the second connector 35. The transmission connection here refers to a connection that can realize the transmission of the pressing force applied by the user to the button 31 to the first switch 40 and the second switch 50, so that the electrical connection relationship between the first switch 40 and the second switch 50 and the circuit board 60 changes.

[0062] The first switch 40 and the second switch 50 are located in the second receiving groove 237, and a portion of the circuit board 60 is located in the second receiving groove 237 and is disposed on the second bottom wall 2374. The first switch 40 is located between the first contact portion 334 and the circuit board 60 and is in transmission connection with the first contact portion 334 and the circuit board 60, and the second switch 50 is located between the second contact portion 354 and the circuit board 60 and is in transmission connection with the second contact portion 354 and the circuit board 60.

[0063] In this embodiment, when the pressing force is applied to the key 31, the key assembly 30 moves in the pressing direction, the first switch 40 receives the pressing signal from the first contact portion 334 and transmits it to the circuit board 60, and the second switch 50 receives the pressing signal from the second contact portion 354 and transmits it to the circuit board 60. Therefore, during the process of pressing the key, the first contact portion 334 and / or the second contact portion 354 can serve as a fulcrum to support the key assembly 30. The first switch 40 and the second switch 50 have a certain rebound force, and when the pressing force applied to the key 31 is cancelled, the first switch 40 and the second switch 50 can return to the initial state under their own action.

[0064] When the applied pressing force acts on the area of ​​the button 31 corresponding to the first contact portion 334 and the second contact portion 354, the hardness of the button 31 is relatively large, and the button 31 drives the first connecting member 33 and the second connecting member 35 to move along the pressing direction, so that the first hanging ear 336 and the second hanging ear 356 move in the direction away from the diaphragm 238, and the reaction force of the diaphragm 238 on the first hanging ear 336 and the second hanging ear 356 is negligible, and the risk of the first hanging ear 336 and the second hanging ear 356 breaking is low. When the applied pressing force is between the area of ​​the key 31 corresponding to the first contact portion 334 and the edge of the key 31 or between the area of ​​the key 31 corresponding to the second contact portion 354 and the edge of the key 31, since the distance l1 between the area of ​​the key 31 corresponding to the first contact portion 334 and the edge of the key 31 and the distance l2 between the area of ​​the key 31 corresponding to the second contact portion 354 and the edge of the key 31 are both small, it is difficult for the user to apply force to the edge area of ​​the key 31. At the same time, the torque of the reaction force of the diaphragm 238 on the first hanging ear 336 or the second hanging ear 356 can be reduced, thereby reducing the reaction force of the diaphragm 238 on the first hanging ear 336 or the second hanging ear 356. For details, please refer to the following explanation.

[0065] See also Figure 6 , Figure 7 and Figure 8 , Figure 6 A schematic diagram of the structure of a key assembly 30a provided in another embodiment. Figure 7 For pressing Figure 6 The stress distribution diagram of the key assembly 30a shown in FIG. Figure 8 for Figure 6In other embodiments, along the Y-axis direction, the first hanging ear 336a, the first contact portion 334a, the second contact portion 354a, and the second hanging ear 356a are arranged in sequence, the first contact portion 334a is transmission-connected to the first switch 40a, and the second contact portion 354a is transmission-connected to the second switch 50a, that is, relatively speaking, the first contact portion 334a and the second contact portion 354a are located on the inner side, and the first hanging ear 336a and the second hanging ear 356a are located on the outer side. During the actual use of the terminal device 100, since the position of the pressing force applied to the button 31a is random, when the pressing force is applied to the area of ​​the button 31a corresponding to the first contact portion 334a and the second contact portion 354a, the button 31a as a whole drives the first connecting member 33a and the second connecting member 35a to move along the pressing direction, and the reaction force of the first hanging ear 336a and the second hanging ear 356a on the diaphragm 238a can be ignored, and the risk of the first hanging ear 336a and the second hanging ear 356a breaking is low. When the pressing force is applied to one end of the button assembly 30a, please refer to Figure 7 Through simulation, it is found that stress concentration occurs at the other end of the key assembly 30a. The area where stress concentration occurs is the risk area of ​​the key assembly 30a. After long-term use, the area where stress concentration occurs is prone to fracture. Figure 6 and Figure 8 , when the pressing force F1 acts on the button 31a on the side where the second hanging ear 356a is located, the supporting force received by the second switch 50 connected to the second contact portion 354a as the fulcrum O is F, the reaction force of the diaphragm 238a on the first hanging ear 336a (i.e., equal to the blocking force received by the button assembly 30a) is F2, along the Y-axis direction, the distance between the first hanging ear 336a and the second switch 50 is L1, the distance between the first hanging ear 336a and the second switch 50 is L2, and the distance between the first hanging ear 336a and the second hanging ear 356a (i.e., equal to the distance between the area where the pressing force F1 is applied and the area where the button assembly 30a is subjected to the blocking force) is L, and the above parameters satisfy the following formula:

[0066]

[0067] but When the magnitude of the support force F on the fulcrum O remains the same, reduce The reaction force F2 of the diaphragm 238a on the first hanging ear 336a can be reduced, that is, the blocking force on the key assembly 30a can be reduced. When the pressing force F1 acts on the key 31a on the side where the first hanging ear 336a is located, the principle is the same as that when the pressing force F1 acts on the key 31a on the side where the second hanging ear 356a is located, which will not be repeated here.

[0068] Please refer again Figure 4 , relative to the previous embodiment, Figure 4 In the embodiment, since the distance l1 is small, much smaller than L1 in the previous embodiment, and the ratio of the distance l1 to the distance between the area where the pressing force is applied and the area where the key assembly 30 is subjected to the blocking force is also reduced, when the applied pressing force is located between the area of ​​the key 31 corresponding to the first contact portion 334 and the edge of the key 31, the reaction force of the diaphragm 238 on the second hanging ear 356 is small, and the risk of breakage of the second hanging ear 356 is significantly reduced; the distance l2 is small, much smaller than L1 in the previous embodiment, and the ratio of the distance l2 to the distance between the area where the pressing force is applied and the area where the key assembly 30 is subjected to the blocking force is also reduced, when the applied pressing force is located between the area of ​​the key 31 corresponding to the second contact portion 354 and the edge of the key 31, the reaction force of the diaphragm 238 on the first hanging ear 336 is small, and the risk of breakage of the first hanging ear 336 is significantly reduced. Therefore, arranging the first contact portion 334 and the second contact portion 354 on the outside of the first hanging ear 336 and the second hanging ear 356 can reduce the stress of the first hanging ear 336 and the second hanging ear 356, thereby effectively improving the fatigue failure caused by the breakage of the first hanging ear 336 or the second hanging ear 356.

[0069] Please refer again Figure 3 and Figure 4 In some embodiments, the key assembly 30 may further include a support rib 37, which is fixed to the key 31 and located between the first extension portion 314 and the second extension portion 316. The support rib 37 is elastic and may be made of soft rubber. In this embodiment, the support rib 37 includes a fixing portion 371 and a support portion 373. The fixing portion 371 is fixed to the pressing portion 312; the support portion 373 is located between the first extension portion 314 and the second extension portion 316. The support portion 373 extends from one side of the fixing portion 371 toward the diaphragm 238 and abuts against the surface of the diaphragm 238. The fixing portion 371 is fixed to the inside of the pressing portion 312. There are two support portions 373, which are spaced apart along the Y-axis direction and extend toward the diaphragm 238 along the X-axis direction. When the button 31 is not pressed, the support portion 373 is in a compressed state to abut against the transverse partition 238, so that there are opposing forces between the button 31 and the transverse partition 238. When the button 31 is not pressed, the button 31 can be prevented from shaking along the pressing direction; when the button 31 is pressed, the support portion 373 is further compressed, and there is a greater friction force between the support portion 373 and the transverse partition 238. When the button 31 is pressed, the shaking of the button 31 along a direction perpendicular to the pressing direction can be improved.

[0070] The terminal device 100 provided in the embodiment of the present application sets the first contact portion 334 and the second contact portion 354 on the outside of the first hanging ear 336 and the second hanging ear 356, which can reduce the possibility of the user pressing the key 31 corresponding to the first contact portion 334 to the edge of the key 31 and reduce the possibility of the user pressing the key 31 corresponding to the second contact portion 354 to the edge of the key 31; in addition, when pressing the edge area of ​​the key 31, the stress of the first hanging ear 336 and the second hanging ear 356 can be reduced, thereby effectively improving the fatigue failure caused by the breakage of the first hanging ear 336 or the second hanging ear 356.

[0071] The above implementation modes are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred implementation modes, a person skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A key assembly, movable along a pressing direction, characterized in that: The button assembly includes a button, a first contact portion, a first hanging ear, a second contact portion and a second hanging ear, wherein the first contact portion, the first hanging ear, the second contact portion and the second hanging ear are located on the same side of the button; and are arranged in the order of the first contact portion, the first hanging ear, the second hanging ear and the second contact portion along a direction perpendicular to the pressing direction.

2. The key assembly according to claim 1, characterized in that: The button assembly comprises: The button comprises a pressing portion, a first extending portion and a second extending portion, wherein the first extending portion and the second extending portion are connected to the pressing portion and both extend along the pressing direction; A first connecting member, sleeved on a surface of the first extending portion, the first connecting member comprising the first hanging ear and the first contact portion; and The second connecting member is sleeved on the surface of the second extending portion, and the second connecting member includes the second hanging ear and the second contact portion.

3. The key assembly according to claim 2, characterized in that: The first connecting member also includes a first groove portion, the first extension portion is located in the first groove portion, and the first hook protrudes relative to the first groove portion in a direction perpendicular to the pressing direction; the second connecting member also includes a second groove portion, the second extension portion is located in the second groove portion, and the second hook protrudes relative to the second groove portion in a direction perpendicular to the pressing direction.

4. The key assembly according to claim 2 or 3, characterized in that: The button assembly further includes a supporting rib, which includes a fixing portion and a supporting portion, wherein the fixing portion is fixed on the pressing portion, and the supporting portion is located between the first extending portion and the second extending portion and extends along the pressing direction.

5. A terminal device, characterized in that: include: case; A key assembly is located in the housing and can move relative to the housing in a pressing direction, wherein the key assembly includes a key, a first contact portion, a first hanging ear, a second contact portion, and a second hanging ear, wherein the first contact portion, the first hanging ear, the second contact portion, and the second hanging ear are located on the same side of the key; and the first contact portion, the first hanging ear, the second hanging ear, and the second contact portion are arranged in the order of the first contact portion, the first hanging ear, the second hanging ear, and the second contact portion in a direction perpendicular to the pressing direction; A first switch, transmission-connected to the first contact portion; as well as The second switch is transmission-connected to the second contact portion.

6. The terminal device according to claim 5, characterized in that: The button assembly comprises: The button comprises a pressing portion, a first extending portion and a second extending portion, wherein the first extending portion and the second extending portion are connected to the pressing portion and both extend along the pressing direction; A first connecting member, sleeved on a surface of the first extending portion, the first connecting member comprising the first hanging ear and the first contact portion; and The second connecting member is sleeved on the surface of the second extending portion, and the second connecting member includes the second hanging ear and the second contact portion.

7. The terminal device according to claim 6, characterized in that: The first connecting member also includes a first groove portion, the first extension portion is located in the first groove portion, and the first hook protrudes relative to the first groove portion in a direction perpendicular to the pressing direction; the second connecting member also includes a second groove portion, the second extension portion is located in the second groove portion, and the second hook protrudes relative to the second groove portion in a direction perpendicular to the pressing direction.

8. The terminal device according to claim 6 or 7, characterized in that: The shell is provided with a first receiving groove, a first through hole, a second through hole, and a second receiving groove, the first through hole connects the first receiving groove and the second receiving groove, and the second through hole connects the first receiving groove and the second receiving groove; the pressing portion is located in the first receiving groove, the first extension portion passes through the first through hole, the second extension portion passes through the second through hole, and the first hanging ear, the second hanging ear, the first switch, and the second switch are located in the second receiving groove.

9. The terminal device according to claim 8, characterized in that: The shell includes a transverse partition, and the first through hole and the second through hole penetrate the transverse partition; the button assembly also includes a supporting rib, which is elastic and includes a fixing portion and a supporting portion, wherein the fixing portion is fixed on the pressing portion, and the supporting portion is located between the first extending portion and the second extending portion, and the supporting portion extends from one side of the fixing portion toward the transverse partition and abuts against the surface of the transverse partition.

10. The terminal device according to claim 9, characterized in that: The supporting ribs, the first connecting member and the second connecting member are all made of soft rubber.

11. The terminal device according to any one of claims 6, 7, 9 and 10, characterized in that: The hardness of the button is greater than the hardness of the first connecting member, and the hardness of the button is greater than the hardness of the second connecting member.

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