Key assembly and electronic equipment

Abstract

The utility model discloses a key assembly and electronic equipment. The key assembly comprises a supporting structure, and the interior of the supporting structure is provided with an installation cavity. The key cap is arranged on one side of the supporting structure, and when the key cap is pressed, the key cap drives the supporting structure to deform; the sensing group is arranged in the mounting cavity, the sensing group comprises a first flexible circuit board and a pressure sensor, the first flexible circuit board is located between the pressure sensor and the key cap, and the pressure sensor and the cavity wall of the mounting cavity are arranged at an interval; the switch is arranged on the side, away from the key cap, of the supporting structure, or one part of the switch is located in the mounting cavity and connected with the first flexible circuit board, and the other part of the switch extends out of the side, away from the key cap, of the supporting structure; wherein the number of the switch is at least one.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic devices, and specifically relates to a key assembly and an electronic device. Background Art

[0002] With the development of electronic technology, electronic devices such as mobile phones, computers and watches are equipped with different types of side button components. Users can apply different operating instructions to the input device according to their own needs to achieve human-computer interaction. Among them, the most widely used border input component is the mechanical button component.

[0003] In related technologies, after the mechanical button component is pressed for a certain distance, the mechanical button component will be triggered. The mechanical button component has only two states, 0 and 1. The mechanical button component cannot support pressure grading, and the interaction method of the mechanical button component is single. Utility Model Content

[0004] The present application aims to provide a key assembly and an electronic device, which solves one of the problems of the single interaction mode of the mechanical key assembly in the related art.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In the first aspect, an embodiment of the present application proposes a key assembly, comprising: a support structure, a mounting cavity being provided in the support structure; a keycap, provided on one side of the support structure, and when the keycap is pressed, the keycap drives the support structure to deform; a sensor group, provided in the mounting cavity, the sensor group comprising a first flexible circuit board and a pressure sensor, the first flexible circuit board being located between the pressure sensor and the keycap, and the pressure sensor being spaced apart from the cavity wall of the mounting cavity; a switch, provided on a side of the support structure facing away from the keycap, or a part of the switch being located in the mounting cavity and connected to the first flexible circuit board, and the other part of the switch extending out of the side of the support structure facing away from the keycap; wherein the number of switches is at least one.

[0007] In a second aspect, an embodiment of the present application proposes an electronic device, comprising: a frame body, the frame body being provided with a receiving groove; and a key assembly as in the first aspect, the key assembly being provided in the receiving groove.

[0008] In an embodiment of the present application, a key assembly includes a supporting structure, a sensor group, a key cap, and a switch. The sensor group includes a first flexible circuit board and a pressure sensor.

[0009] The keycap is mounted on one side of the support structure, with the first flexible printed circuit board positioned between the pressure sensor and the keycap. The switch is positioned on the side of the support structure facing away from the keycap. Alternatively, a portion of the switch is positioned within the mounting cavity and connected to the first flexible printed circuit board, while another portion of the switch extends out of the side of the support structure facing away from the keycap.

[0010] The key assembly is used in an electronic device, which includes a frame, a receiving groove provided in the frame, and the key assembly is arranged in the receiving groove. The switch is connected to the groove wall of the receiving groove.

[0011] When the keycap is lightly pressed or slid, the support structure deforms slightly (e.g., the amount of twisting deformation is small). The detection data of the pressure sensor is correlated with the pressure applied, so as to determine the pressing force applied to the keycap and use this as the data basis for triggering the corresponding preset function. It is understandable that when the support structure deforms, the first flexible circuit board deforms accordingly. When the support structure deforms, the pressure sensor deforms accordingly. Since the deformation of the support structure is small, the switch is not triggered and the switch does not provide feedback.

[0012] When the keycap is pressed hard, the support structure undergoes a large deformation (e.g., a large amount of twisting deformation). The detection data of the pressure sensor is correlated with the pressure received, so as to determine the pressing force received by the keycap, and use this as the data basis for triggering the corresponding preset function. It is understandable that when the support structure is deformed, the first flexible circuit board is deformed accordingly. When the support structure is deformed, the pressure sensor is deformed accordingly. Due to the large deformation of the support structure, the installation space of the switch will be squeezed along the direction from the keycap to the support structure, causing the switch to close, triggering the key function of the switch, and the switch feedback.

[0013] In other words, the button component of the present application supports sliding interaction and pressure-graded interaction, realizing multi-dimensional interactive input. Different interaction methods correspond to different experience feedback, and the feedback methods are diverse, which can provide users with a rich interactive experience.

[0014] Additionally, lightly pressing or sliding the keycap utilizes the electronic device's motor feedback. Pressing the keycap hard uses the switch's force feedback. This means the feedback from lightly pressing, sliding, and pressing the keycap is distinct and clearly differentiated, allowing users to clearly perceive their actions. This reduces the likelihood of accidental touches, such as a light press that accidentally triggers a hard press and a hard press that accidentally triggers a long press, resulting in a low false-touch rate.

[0015] Furthermore, the sensor assembly is located within the mounting cavity of the support structure, while the keycaps are mounted on one side of the support structure. Therefore, the support structure serves to separate the keycaps from the sensor assembly. Neither the first flexible printed circuit board nor the pressure sensor of the sensor assembly directly contacts the keycaps, thus preventing damage and extending the service life of the sensor assembly.

[0016] The number of switches is at least one. The number of switches is one. Alternatively, the number of switches is multiple, where multiple means greater than or equal to two. For example, the number of switches includes 2, 3, 4, or 5, etc., which are not listed here.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a partial structural diagram of an electronic device according to the first embodiment of the present application;

[0020] Figure 2 1 is a schematic diagram of the force acting on the electronic device according to the first embodiment of the present application;

[0021] Figure 3 is a partial structural diagram of an electronic device according to a second embodiment of the present application;

[0022] Figure 4 is a partial structural diagram of an electronic device according to a third embodiment of the present application;

[0023] Figure 5 is a partial structural diagram of an electronic device according to a fourth embodiment of the present application;

[0024] Figure 6 is a partial structural diagram of an electronic device according to a fifth embodiment of the present application;

[0025] Figure 7 is a partial structural diagram of an electronic device according to a sixth embodiment of the present application;

[0026] Figure 8 is a partial structural diagram of an electronic device according to a seventh embodiment of the present application;

[0027] Figure 9 is a schematic structural diagram of the first part of the electronic device according to the eighth embodiment of the present application;

[0028] Figure 10 is a schematic structural diagram of the second part of the electronic device according to the eighth embodiment of the present application;

[0029] Figure 11 is a partial structural diagram of an electronic device according to a ninth embodiment of the present application;

[0030] Figure 12 is a partial structural diagram of an electronic device according to a tenth embodiment of the present application;

[0031] Figure 13 is a circuit diagram of two first pressure sensing parts and two second pressure sensing parts according to an embodiment of the present application;

[0032] Figure 14 is a schematic diagram of applying force to the middle portion of a keycap according to an embodiment of the present application;

[0033] Figure 15 is a schematic diagram of applying force at the F2 position of the keycap according to an embodiment of the present application;

[0034] Figure 16 is a measured signal diagram of an embodiment of the present application;

[0035] Figure 17 This is a flowchart of a method for controlling an electronic device according to an embodiment of the present application.

[0036] Reference numerals:

[0037] Figures 1 to 15 The corresponding relationship between the reference numerals and component names is as follows:

[0038] 1 key assembly, 100 supporting structure, 110 mounting cavity, 120 first supporting portion, 130 second supporting portion, 132 middle portion of the second supporting portion, 140 third supporting portion, 150 opening, 160 first supporting member, 162 thinning portion, 170 second supporting member, 180 third connecting portion, 200 keycap, 210 peripheral wall of the keycap, 220 first matching section, 230 second matching section, 300 sensing group, 310 first flexible circuit board, 320 pressure sensor, 322 first pressure sensing portion, 324 second pressure sensing portion, 400 switch, 500 first connecting portion, 510 first The outer wall of the connecting part, 520 connecting block, 600 first fixing part, 700 elastic part, 800 first limiting member, 900 second limiting member, 1000 circuit board, 1100 second fixing part, 1200 second connecting part, 1300 gap, 1400 second flexible circuit board, 1500 capacitive sensing part, 1600 first connecting member, 1700 second connecting member, 1800 connecting member, 1900 limiting structure, 1910 first limiting plate, 1920 second limiting plate, 2 electronic equipment, 22 frame, 222 accommodating groove, 2222 notch of the accommodating groove, 2224 bottom of the accommodating groove. DETAILED DESCRIPTION

[0039] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0043] The following is combined with Figures 1 to 17 The key assembly 1 and electronic device 2 provided in an embodiment of the present application are described.

[0044] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, according to some embodiments of the present application, the key assembly 1 includes: a support structure 100, a mounting cavity 110 is provided in the support structure 100; a keycap 200 is provided on one side of the support structure 100, and when the keycap 200 is pressed, the keycap 200 drives the support structure 100 to deform; a sensor group 300 is provided in the mounting cavity 110, the sensor group 300 includes a first flexible circuit board 310 and a pressure sensor 320, the first flexible circuit board 310 is located between the pressure sensor 320 and the keycap 200, and the pressure sensor 320 is spaced apart from the cavity wall of the mounting cavity 110; a switch 400 is provided on a side of the support structure 100 away from the keycap 200, or a part of the switch 400 is located in the mounting cavity 110 and connected to the first flexible circuit board 310, and the other part of the switch 400 extends out of the side of the support structure 100 away from the keycap 200; wherein the number of the switch 400 is at least one.

[0045] In the embodiment of the present application, the key assembly 1 includes a support structure 100 , a sensor group 300 , a key cap 200 , and a switch 400 . The sensor group 300 includes a first flexible circuit board 310 and a pressure sensor 320 .

[0046] The keycap 200 is mounted on one side of the support structure 100, with the first flexible printed circuit board 310 positioned between the pressure sensor 320 and the keycap 200. The switch 400 is positioned on the side of the support structure 100 facing away from the keycap 200. Alternatively, a portion of the switch 400 is positioned within the mounting cavity 110 and connected to the first flexible printed circuit board 310, while another portion of the switch 400 extends out of the side of the support structure 100 facing away from the keycap 200.

[0047] The key assembly 1 is used in an electronic device 2. The electronic device 2 includes a frame 22. The frame 22 is provided with a receiving groove 222. The key assembly 1 is disposed in the receiving groove 222. The switch 400 is connected to the groove wall of the receiving groove 222.

[0048] When the keycap 200 is lightly pressed or slid, the support structure 100 is slightly deformed (e.g., the amount of twisting deformation is small), and the detection data of the pressure sensor 320 is correlated with the pressure applied, so as to determine the pressing force applied to the keycap 200 and serve as the data basis for triggering the corresponding preset function. It is understandable that when the support structure 100 is deformed, the first flexible circuit board 310 is deformed accordingly. When the support structure 100 is deformed, the pressure sensor 320 is deformed accordingly. Since the deformation of the support structure 100 is small, the switch 400 is not triggered and the switch 400 does not provide feedback.

[0049] When the keycap 200 is pressed hard, the support structure 100 undergoes a large deformation (e.g., a large amount of twisting deformation). The detection data of the pressure sensor 320 is correlated with the pressure received, so as to determine the pressing force received by the keycap 200 and use this as the data basis for triggering the corresponding preset function. It is understandable that when the support structure 100 is deformed, the first flexible circuit board 310 is deformed accordingly. When the support structure 100 is deformed, the pressure sensor 320 is deformed accordingly. Due to the large deformation of the support structure 100, it will squeeze the installation space of the switch 400 in the direction from the keycap 200 to the support structure 100, causing the switch 400 to close, triggering the key function of the switch 400, and the switch 400 to feedback.

[0050] In other words, the button component 1 of the present application supports sliding interaction and pressure-graded interaction, realizing multi-dimensional interactive input. Different interaction methods correspond to different experience feedback, and the feedback methods are diverse, which can provide users with a rich interactive experience.

[0051] Furthermore, when lightly pressing or sliding the keycap 200, the motor feedback of the electronic device 2 is used. When the keycap 200 is pressed hard, the hard-press feedback is force feedback from the switch 400. In other words, the feedback from lightly pressing, sliding, and hard-pressing the keycap 200 is distinct and clearly differentiated, allowing the user to clearly perceive their operation and avoid the possibility of accidental touches such as "light press mistakenly triggering a hard press" and "hard press mistakenly triggering a long press," resulting in a low false touch rate.

[0052] Furthermore, the sensor assembly 300 is located within the mounting cavity 110 of the support structure 100, while the keycap 200 is located on one side of the support structure 100. Therefore, the support structure 100 serves to separate the keycap 200 from the sensor assembly 300. Neither the first flexible printed circuit board 310 nor the pressure sensor 320 of the sensor assembly 300 directly contacts the keycap 200, thus preventing damage and extending the service life of the sensor assembly 300.

[0053] Optionally, when the deformation of the support structure 100 is large, the switch 400 provides clear sound feedback, so that the user can obtain a definite pressing information feedback, which can greatly reduce the probability of the user accidentally touching the key assembly 1.

[0054] Optionally, the switch 400 includes a dome switch and a spring switch, etc., which are not listed here one by one. Among them, the dome switch includes a pot button, and the spring switch includes a mechanical keyboard.

[0055] In some other embodiments, when the keycap 200 is tapped or slid, the speaker of the electronic device 2 is used for feedback.

[0056] In some other embodiments, when the keycap 200 is lightly pressed or slid, light feedback of the electronic device 2 is used.

[0057] The number of switches 400 is at least one. The number of switches 400 is one. Alternatively, the number of switches 400 is multiple, where multiple means greater than or equal to two. For example, the number of switches 400 includes 2, 3, 4, or 5, etc., which are not listed here one by one.

[0058] In some embodiments, as Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the support structure 100 includes a first support portion 120, a second support portion 130 and a third support portion 140, the second support portion 130 is connected between the first support portion 120 and the third support portion 140, and the first support portion 120, the second support portion 130 and the third support portion 140 are located on the same side of the mounting cavity 110; the key assembly 1 also includes a first connecting portion 500, the first connecting portion 500 is connected between the second support portion 130 and the keycap 200, and the outer edge of the keycap 200 has a gap 1300 with the second support portion 130.

[0059] In this embodiment, the composition of the support structure 100 is further defined.

[0060] The support structure 100 includes a first support portion 120, a second support portion 130, and a third support portion 140. The second support portion 130 is connected between the first support portion 120 and the third support portion 140. The first support portion 120, the second support portion 130, and the third support portion 140 are located on the same side of the installation cavity 110.

[0061] The key assembly 1 also includes a first connecting portion 500, which is connected between the second support portion 130 and the keycap 200. That is, the keycap 200 is connected to a portion of the support structure 100 via the first connecting portion 500, and a gap 1300 is formed between the outer edge of the keycap 200 and the second support portion 130. This arrangement reduces the mating area between the keycap 200 and the support structure 100 while ensuring the effectiveness and feasibility of assembling the keycap 200 and the support structure 100. In this way, when an external force acts on the keycap 200, the support structure 100 is more likely to deform, and the support structure 100 can undergo a larger deformation. This is conducive to improving the sensitivity and accuracy of the pressure sensor 320 in detecting pressure, so that the corresponding preset function of the electronic device 2 can be accurately and quickly triggered, which is conducive to improving the product's performance and market competitiveness.

[0062] Optionally, the first connection portion 500 includes a bonding portion, a welding portion, etc., which are not listed here one by one.

[0063] When the first connecting portion 500 includes an adhesive portion, the adhesive portion includes any one of the following or a combination thereof: double-sided tape, 502 adhesive, thermosetting adhesive, shadowless adhesive, photosensitive adhesive, UV curing adhesive, epoxy film, two-component adhesive, and foam adhesive.

[0064] In some embodiments, as Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the peripheral wall 210 of the key cap is located outside the peripheral wall 510 of the first connecting portion.

[0065] In this embodiment, the matching structure between the keycap 200 and the first connecting portion 500 is further defined.

[0066] The outer peripheral wall 210 of the keycap is located outside the outer peripheral wall 510 of the first connecting portion. That is, along the direction from the second supporting portion 130 to the first supporting portion 120, the keycap 200 protrudes beyond the outer peripheral wall 510 of the first connecting portion. Along the direction from the second supporting portion 130 to the third supporting portion 140, the keycap 200 protrudes beyond the outer peripheral wall 510 of the first connecting portion. Alternatively, along the direction from the keycap 200 to the support structure 100, the orthographic projection of the keycap 200 and the first connecting portion 500 onto the support structure 100 results in the outer contour of the keycap 200 being located outside the outer contour of the first connecting portion 500. In other words, along the direction from the second supporting portion 130 to the first supporting portion 120, the distance from the keycap 200 to the first supporting portion 120 is less than the distance from the first connecting portion 500 to the first supporting portion 120. Along the direction from the second supporting portion 130 to the third supporting portion 140 , the distance from the keycap 200 to the third supporting portion 140 is smaller than the distance from the first connecting portion 500 to the third supporting portion 140 .

[0067] It can be seen that the outer edge of the keycap 200 is spaced apart from the second support portion 130 via the first connecting portion 500 , so that a gap 1300 is formed between the outer edge of the keycap 200 and the second support portion 130 .

[0068] This arrangement ensures the effectiveness and feasibility of the connection between the keycap 200 and the support structure 100 while making it easier for the support structure 100 to deform when the keycap 200 is pressed, which is beneficial to improving the sensitivity and accuracy of pressure detection.

[0069] like Figure 2 As shown, the distance that the first connecting portion 500 retracts along the direction from the first supporting portion 120 to the second supporting portion 130 is x, and the distance that the first connecting portion 500 retracts along the direction from the third supporting portion 140 to the second supporting portion 130 is y.

[0070] In some embodiments, as Figure 3As shown, the keycap 200 includes: a first mating segment 220; a second mating segment 230, the first mating segment 220 and the second mating segment 230 are arranged along the direction from the keycap 200 to the first connecting portion 500, and the second mating segment 230 is connected between the first mating segment 220 and the first connecting portion 500, and the outer peripheral wall of the second mating segment 230 is located on the inner side of the outer peripheral wall of the first mating segment 220.

[0071] In this embodiment, the matching structure of the keycap 200 , the first connecting portion 500 and the supporting structure 100 is further defined.

[0072] The keycap 200 includes a first mating segment 220 and a second mating segment 230 . The first mating segment 220 and the second mating segment 230 are arranged along a direction from the keycap 200 to the first connecting portion 500 , and the second mating segment 230 is connected between the first mating segment 220 and the first connecting portion 500 .

[0073] The outer peripheral wall of the second mating segment 230 is located inward of the outer peripheral wall of the first mating segment 220. That is, along the direction from the second support portion 130 to the first support portion 120, the first mating segment 220 protrudes beyond the outer peripheral wall of the second mating segment 230. Along the direction from the second support portion 130 to the third support portion 140, the first mating segment 220 protrudes beyond the outer peripheral wall of the second mating segment 230. Alternatively, along the direction from the first mating segment 220 to the support structure 100, the outer contour of the first mating segment 220 and the second mating segment 230, as orthographically projected onto the support structure 100, is located outside the outer contour of the second mating segment 230. In other words, along the direction from the second support portion 130 to the first support portion 120, the distance from the first mating segment 220 to the first support portion 120 is smaller than the distance from the second mating segment 230 to the first support portion 120. Along the direction from the second supporting portion 130 to the third supporting portion 140 , the distance from the first matching section 220 to the third supporting portion 140 is smaller than the distance from the second matching section 230 to the third supporting portion 140 .

[0074] It can be seen that the outer peripheral wall of the first matching section 220 is spaced apart from the second supporting portion 130 via the second matching section 230 , so that a gap 1300 is formed between the outer edge of the keycap 200 and the second supporting portion 130 .

[0075] This arrangement can reduce the matching area between the keycap 200 and the support structure 100 while ensuring the effectiveness and feasibility of the connection between the keycap 200 and the support structure 100. In this way, when the keycap 200 is pressed, the support structure 100 is easily deformed, which is beneficial to improving the sensitivity and accuracy of pressure detection.

[0076] It is understood that the area of the end surface of the keycap 200 facing the first connecting portion 500 is smaller than the area of the end surface of the keycap 200 facing away from the first connecting portion 500. This defines the structure of the keycap 200. This arrangement ensures the effectiveness and feasibility of the connection between the keycap 200 and the support structure 100 while reducing the mating area between the keycap 200 and the support structure 100. This allows the support structure 100 to deform more easily when the keycap 200 is pressed, thereby improving the sensitivity and accuracy of pressure detection.

[0077] Optionally, along the direction from the keycap 200 to the support structure 100 , the keycap 200 is projected onto the support structure 100 , and the projection of the keycap 200 overlaps with the second support portion 130 , or the projection of the keycap 200 is located within the area enclosed by the outer edge of the second support portion 130 .

[0078] When the outer circumferential wall of the second mating segment 230 is located inwardly of the outer circumferential wall of the first mating segment 220, the outer circumferential wall 510 of the first connecting portion overlaps with the outer circumferential wall of the second supporting portion 130, or the outer circumferential wall 510 of the first connecting portion is located inwardly of the outer circumferential wall of the second supporting portion 130. In other words, due to the defined structure of the first mating segment 220 and the second mating segment 230, the structure of the first connecting portion 500 does not need to be retracted to the inward side of the outer circumferential wall 210 of the keycap, and the shape of the first connecting portion 500 has a minimal effect on the deformation of the support structure 100. The shape of the first connecting portion 500 can be customized based on actual usage requirements.

[0079] In some embodiments, as Figure 1 、 Figure 5 、 Figure 6 and Figure 7 As shown, when the switch 400 is arranged on the side of the support structure 100 away from the keycap 200, the key assembly 1 also includes a first fixing portion 600, which is arranged on the side of the switch 400 away from the support structure 100, and the first fixing portion 600 is used for installation and positioning of the switch 400.

[0080] In this embodiment, the structure of the key assembly 1 is further defined.

[0081] When the switch 400 is located on the side of the support structure 100 facing away from the keycap 200, the key assembly 1 further includes a first fixing portion 600, which serves to mount and secure the switch 400. The first fixing portion 600 is located on the side of the switch 400 facing away from the support structure 100 and connects the switch 400 to the wall of the receiving slot 222 of the electronic device 2, allowing the key assembly 1 to be effectively and reliably assembled with the frame 22 of the electronic device 2.

[0082] In some embodiments, as Figure 1As shown, the key assembly 1 also includes: a plurality of elastic parts 700, which are arranged on the side of the support structure 100 away from the keycap 200, a part of the plurality of elastic parts 700 are located on the first side of the switch 400, and another part of the plurality of elastic parts 700 are located on the second side of the switch 400, the first side of the switch 400 and the second side of the switch 400 are arranged opposite to each other, and the elastic parts 700 are used to support the support structure 100.

[0083] In this embodiment, the structure of the key assembly 1 is further defined.

[0084] The key assembly 1 further includes a plurality of elastic portions 700, which are disposed on a side of the support structure 100 facing away from the keycap 200. Specifically, each elastic portion 700 is connected between the support structure 100 and a wall of the receiving slot 222 of the electronic device 2. Some of the elastic portions 700 are located on a first side of the switch 400, while others are located on a second side of the switch 400. The first side of the switch 400 and the second side of the switch 400 are disposed opposite each other.

[0085] This arrangement increases the contact area and angle between the support structure 100 and the receiving groove 222, allowing the support structure 100 to be supported from multiple directions and angles. This allows the key assembly 1 to be installed and fixed from multiple directions and angles. This allows the key assembly 1 to maintain balance and meet the user's need to move the key assembly 1 downward, improving the user's feel when actuating the key assembly 1.

[0086] In some embodiments, as Figure 6 As shown, the key assembly 1 also includes: a first limiting member 800, which is arranged on the first supporting portion 120; a second limiting member 900, which is arranged on the third supporting portion 140, and the first limiting member 800, the second limiting member 900 and the keycap 200 are located on the same side of the supporting structure 100; the first limiting member 800 and the second limiting member 900 are both used for installation and positioning of the supporting structure 100.

[0087] In this embodiment, the structure of the key assembly 1 is further defined.

[0088] The key assembly 1 also includes a first limiter 800 and a second limiter 900. The first limiter 800 is provided on the first support portion 120, and the second limiter 900 is provided on the third support portion 140. The first limiter 800 is connected between the first support portion 120 and the wall of the receiving groove 222 of the electronic device 2, and the second limiter 900 is connected between the third support portion 140 and the wall of the receiving groove 222 of the electronic device 2. This increases the contact area and contact angle between the support structure 100 and the receiving groove 222, allowing the support structure 100 and the wall of the receiving groove 222 to be connected from multiple directions and angles, thereby ensuring the stability and reliability of the assembly of the key assembly 1 and the frame 22 of the electronic device 2.

[0089] The first stopper 800 is disposed opposite the first support portion 120, and the second stopper 900 is disposed opposite the third support portion 140. That is, both the first stopper 800 and the second stopper 900 are disposed opposite the end regions of the support structure 100. Therefore, it can be seen that the component capable of providing support force to the support structure 100 is connected to the end region of the support structure 100. At the same time, a gap 1300 is formed between the outer edge of the keycap 200 and the second support portion 130, reducing the mating area between the keycap 200 and the second support portion 130. Thus, when an external force acts on the keycap 200, the support structure 100 is more likely to deform, and the support structure 100 can undergo a significant deformation. This helps to improve the sensitivity and accuracy of the pressure sensor 320 in detecting pressure, enabling accurate and rapid triggering of the corresponding preset function of the electronic device 2, thereby improving the product's performance and market competitiveness.

[0090] In some embodiments, along the distance from the keycap 200 to the support structure 100 , the distance between the first fixing portion 600 and the support structure 100 is smaller than the height of the switch 400 .

[0091] In this embodiment, the matching structure of the first fixing portion 600 , the supporting structure 100 and the switch 400 is further defined.

[0092] Along the distance from the keycap 200 to the support structure 100, the distance between the first fixing portion 600 and the support structure 100 is less than the height of the switch 400. That is, along the distance from the keycap 200 to the support structure 100, the height of the space between the first fixing portion 600 and the support structure 100 for mounting the switch 400 is less than the height of the switch 400. This allows the switch 400 to be installed in an interference fit, facilitating its securement and ensuring high travel consistency of the key assembly 1.

[0093] like Figure 6As shown, by setting the first limit member 800 and the second limit member 900, the first limit member 800 is arranged on the first support part 120, and the second limit member 900 is arranged on the third support part 140. The first limit member 800 and the second limit member 900 are used to limit the support structure 100, so that the distance from the keycap 200 to the support structure 100 and the distance from the first fixing part 600 to the support structure 100 are less than the height of the switch 400.

[0094] like Figure 7 As shown, the first supporting portion 120 and the third supporting portion 140 abut against the wall of the receiving groove 222 to achieve the purpose of making the distance from the keycap 200 to the supporting structure 100 and the first fixing portion 600 to the supporting structure 100 smaller than the height of the switch 400 .

[0095] In some embodiments, as Figure 1 、 Figure 5 、 Figure 6 and Figure 7 As shown, the key assembly 1 further includes: a circuit board 1000 , and the circuit board 1000 is connected between the first fixing portion 600 and the switch 400 .

[0096] In this embodiment, the structure of the key assembly 1 is further defined. The key assembly 1 further includes a circuit board 1000 connected between the first fixing portion 600 and the switch 400. The circuit board 1000 is electrically connected to the switch 400 to meet the use requirements of the key assembly 1.

[0097] In some embodiments, as Figure 4 As shown, when a portion of the switch 400 is located in the mounting cavity 110 and is connected to the first flexible circuit board 310, and another portion of the switch 400 extends out of the side of the support structure 100 away from the keycap 200, the key assembly 1 further includes a second fixing portion 1100, which is provided on the side of the support structure 100 away from the keycap 200, and is used for installation and positioning of the support structure 100.

[0098] In this embodiment, the structure of the key assembly 1 is further defined.

[0099] When a portion of the switch 400 is located within the mounting cavity 110 and connected to the first flexible printed circuit board 310, and another portion of the switch 400 extends out of the side of the support structure 100 facing away from the keycap 200, the key assembly 1 further includes a second fixing portion 1100. The second fixing portion 1100 is used to securely mount the support structure 100. Specifically, the second fixing portion 1100 is located on the side of the support structure 100 facing away from the keycap 200.

[0100] The second fixing portion 1100 is connected to the supporting structure 100 and the wall of the receiving groove 222 of the electronic device 2 , so that the key assembly 1 and the frame 22 of the electronic device 2 are effectively and reliably assembled together.

[0101] Optionally, the first flexible circuit board 310 is electrically connected to the switch 400 .

[0102] In some embodiments, as Figure 4 As shown, an opening 150 is provided on a side of the support structure 100 facing away from the keycap 200 . The opening 150 communicates with the mounting cavity 110 , and another portion of the switch 400 extends out of the support structure 100 through the opening 150 .

[0103] In this embodiment, the matching structure of the support structure 100 and the switch 400 is further defined.

[0104] An opening 150 is provided on one side of the support structure 100 away from the keycap 200 . The opening 150 communicates with the mounting cavity 110 and allows another portion of the switch 400 to extend out of the support structure 100 . It is understood that the wall of the opening 150 surrounds the switch 400 .

[0105] The portion of the switch 400 located outside the supporting structure 100 abuts against the wall of the receiving groove 222 .

[0106] In some embodiments, as Figure 4 As shown, the pressure sensor 320 includes: at least one first pressure sensing part 322 and at least one second pressure sensing part 324; the first pressure sensing part 322 is closer to the side of the second support part 130 facing the first support part 120 than the middle part 132 of the second support part, and the second pressure sensing part 324 is closer to the side of the second support part 130 facing the third support part 140 than the middle part 132 of the second support part.

[0107] In this embodiment, the structure of the pressure sensor 320 is further defined.

[0108] Specifically, the pressure sensor 320 includes at least one first pressure sensing portion 322 and at least one second pressure sensing portion 324. The first pressure sensing portion 322 and the second pressure sensing portion 324 are arranged at different positions.

[0109] The first pressure sensing portion 322 is located at an end of the second support portion 130. Specifically, the first pressure sensing portion 322 is closer to the side of the second support portion 130 facing the first support portion 120 than the middle portion 132 of the second support portion. The second pressure sensing portion 324 is located at an end of the second support portion 130. Specifically, the second pressure sensing portion 324 is closer to the side of the second support portion 130 facing the third support portion 140 than the middle portion 132 of the second support portion.

[0110] For example, the number of the first pressure sensing parts 322 is two, and the number of the second pressure sensing parts 324 is two. Figure 2 As shown, the two first pressure sensing portions 322 are respectively denoted as R1 and R2 , and the two second pressure sensing portions 324 are respectively denoted as R3 and R4 .

[0111] This arrangement causes the support structure 100 to twist downward when an external force acts on the keycap 200, increasing the resistance of R2 and R4 while decreasing the resistance of R1 and R3. The greater the pressure, the greater the absolute value of the rate of change of each resistance. The positioning of the four pressure sensors makes them more sensitive.

[0112] In some embodiments, when there are multiple first pressure sensing parts 322, along the second support part 130 to the first support part 120, the multiple first pressure sensing parts 322 are located on the same side of the first connection part 500, or at least one of the multiple first pressure sensing parts 322 is arranged opposite to the first connection part 500; when there are multiple second pressure sensing parts 324, along the second support part 130 to the third support part 140, the multiple second pressure sensing parts 324 are located on the same side of the first connection part 500, or at least one of the multiple second pressure sensing parts 324 is arranged opposite to the first connection part 500.

[0113] In this embodiment, the number and arrangement positions of the first pressure sensing portions 322 are limited. When there are multiple first pressure sensing portions 322, the multiple first pressure sensing portions 322 are located on the same side of the first connecting portion 500 along the path from the second supporting portion 130 to the first supporting portion 120. Alternatively, when there are multiple first pressure sensing portions 322, at least one of the multiple first pressure sensing portions 322 is located opposite the first connecting portion 500 along the path from the second supporting portion 130 to the first supporting portion 120.

[0114] The number and arrangement positions of the second pressure sensing portions 324 are limited. When there are multiple second pressure sensing portions 324, the multiple second pressure sensing portions 324 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the third supporting portion 140. Alternatively, at least one of the multiple second pressure sensing portions 324 is located opposite the first connecting portion 500 along the second supporting portion 130 to the third supporting portion 140.

[0115] In some embodiments, as Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the key assembly 1 further includes: a second connecting portion 1200 , and the second connecting portion 1200 is connected between the second supporting portion 130 and the first flexible circuit board 310 .

[0116] In this embodiment, the structure of the key assembly 1 is further defined, such that the key assembly 1 further includes a second connecting portion 1200, which is connected between the second supporting portion 130 and the first flexible circuit board 310. In other words, the second supporting portion 130 and the first flexible circuit board 310 are connected via the second connecting portion 1200.

[0117] Optionally, the second connection portion 1200 includes a bonding portion, a welding portion, etc., which are not listed here one by one.

[0118] When the second connection portion 1200 includes an adhesive portion, the adhesive portion includes any one of the following or a combination thereof: double-sided tape, 502 adhesive, thermosetting adhesive, shadowless adhesive, photosensitive adhesive, and ultraviolet light curing adhesive.

[0119] In some embodiments, as Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the support structure 100 includes: a first support member 160, the first support member 160 forms a first support portion 120, a second support portion 130 and a third support portion 140; a second support member 170, the second support member 170 is arranged on the side of the first support member 160 away from the keycap 200, and the second support member 170 and the first support member 160 enclose an installation cavity 110; a third connecting portion 180, located between the first support member 160 and the second support member 170, and the third connecting portion 180 is used to connect the first support member 160 and the second support member 170.

[0120] In this embodiment, the support structure 100 includes a first support member 160 , a second support member 170 and a third connection portion 180 .

[0121] The first support member 160 forms a first support portion 120 , a second support portion 130 , and a third support portion 140 .

[0122] The first support member 160 and the second support member 170 enclose the mounting cavity 110 .

[0123] The first flexible circuit board 310 and the pressure sensor 320 are both located in the mounting cavity 110 .

[0124] The second support member 170 supports and positions the first support member 160 .

[0125] The first flexible circuit board 310 and the pressure sensor 320 are both spaced apart from the second support member 170. That is, the first flexible circuit board 310 and the second support member 170 are spaced apart, and the pressure sensor 320 and the second support member 170 are spaced apart. This arrangement provides space for the sensor group 300 to deform, preventing any obstruction to the deformation of the first support member 160 and the sensor group 300, and providing structural support to ensure the effectiveness and reliability of signal detection.

[0126] The third connection portion 180 is located between the first support member 160 and the second support member 170 , and the third connection portion 180 has a function of connecting the first support member 160 and the second support member 170 .

[0127] Optionally, the third connection portion 180 includes any one of the following or a combination thereof: a buckle, a latch, and a welding point, which are not listed here one by one.

[0128] In some embodiments, as Figure 8 As shown, the first support member 160 is provided with a thinning portion 162 , and the thinning portion 162 includes a through hole and / or a thinning groove.

[0129] In this embodiment, the structure of the first support member 160 is further defined.

[0130] Specifically, the first support member 160 is provided with a thinning portion 162, and the thinning portion 162 includes a through hole and / or a thinning groove. The first support member 160 is provided with a through hole, or the first support member 160 is provided with a thinning groove, or the first support member 160 is provided with a through hole and a thinning groove.

[0131] The structural strength of the portion of the first support member 160 where the thinned portion 162 is provided is lower than that of the remaining portion of the first support member 160 .

[0132] This arrangement weakens the strength of a local area of the first support member 160, making it easier for the first support member 160 to deform under the drive of the keycap 200, thereby increasing the deformation of the first support member 160. This helps to enhance the pressure-sensitive signal and improve the sensitivity of the product.

[0133] In some embodiments, at least a portion of the thinned portion 162 is disposed opposite to the pressure sensor 320 .

[0134] In this embodiment, the matching structure between the thinned portion 162 and the sensor group 300 is further defined.

[0135] Specifically, at least a portion of the thinned portion 162 is disposed opposite the pressure sensor 320. This arrangement helps increase the deformation of the portion of the first flexible circuit board 310 that faces the thinned portion 162, and also increases the deformation of the pressure sensor 320. This helps enhance the pressure-sensing signal and improves the sensitivity of the product.

[0136] In some other embodiments, the thinned portion 162 is located on one side of the pressure sensor 320 .

[0137] Optionally, the number of the thinned portion 162 is one or more.

[0138] For example, if there are two thinned portions 162, one thinned portion 162 cooperates with the first pressure sensing portion 322, and the other thinned portion 162 cooperates with the second pressure sensing portion 324. For example, in the case of the thinned portion 162 cooperating with the first pressure sensing portion 322, at least a portion of the thinned portion 162 is disposed opposite the first pressure sensing portion 322; alternatively, along the direction from the second support portion 130 to the first support portion 120, the first pressure sensing portion 322 is located outside the thinned portion 162; alternatively, along the direction from the second support portion 130 to the first support portion 120, the first pressure sensing portion 322 is located inside the thinned portion 162.

[0139] In some embodiments, as Figure 11 As shown, the key assembly 1 also includes: a second flexible circuit board 1400, located between the second support portion 130 and the keycap 200; at least one capacitive sensing portion 1500, provided on the second flexible circuit board 1400; when the number of the capacitive sensing portions 1500 is multiple, the multiple capacitive sensing portions 1500 are arranged at intervals along the direction from the first support portion 120 to the second support portion 130; the capacitive sensing portion 1500 is located on the side of the second flexible circuit board 1400 facing the keycap 200.

[0140] In this embodiment, the structure of the key assembly 1 is further defined.

[0141] Specifically, the button assembly 1 further includes a second flexible circuit board 1400 and at least one capacitive sensing portion 1500 .

[0142] The second flexible circuit board 1400 is located between the second supporting portion 130 and the keycap 200 , and at least one capacitive sensing portion 1500 is disposed on the second flexible circuit board 1400 .

[0143] The detection data of the capacitive sensing unit 1500 is used to determine the sliding displacement, and plays a role in assisting the sliding detection.

[0144] Specifically, when the user's hand slides on the keycap 200, the touch position changes, and the capacitive sensing unit 1500 will detect the sliding position of the hand in real time. Combined with signal processing and algorithm processing, the touch and sliding routes can be extracted to achieve touch and sliding sensing.

[0145] Capacitive sensing unit 1500 is used to detect sliding displacement, which helps improve the product's sliding sensitivity and resolution. At least one capacitive sensing unit 1500 combined with pressure sensor 320 enables more accurate sliding detection, allowing the product to support use in scenarios where capacitive sensing signals may be abnormal, such as with wet hands or gloves.

[0146] Optionally, the capacitive sensing unit 1500 can be used to wake up the working mode, which is beneficial to reducing the power consumption of the product.

[0147] At least one capacitive sensing unit 1500 combined with the pressure sensor 320 can further improve the performance of preventing accidental touches. For example, the capacitive sensing unit 1500 can detect whether there is human operation to filter out non-human operation. For example, the capacitive sensing unit 1500 is used to support sliding detection, while the pressure sensor 320 is used to support pressing and sliding detection.

[0148] Optionally, the number of the capacitive sensing unit 1500 is one.

[0149] Optionally, the number of the capacitive sensing units 1500 is greater than or equal to two.

[0150] When there are multiple capacitive sensing parts 1500, the capacitive sensing parts 1500 are spaced apart from each other along the direction from the first support part 120 to the second support part 130. This arrangement increases the mating area between the capacitive sensing part 1500 and the keycap 200, and can effectively detect sliding movements at different positions on the keycap 200.

[0151] The capacitive sensing portion 1500 is located on the side of the second flexible circuit board 1400 facing the keycap 200 , which reduces the distance between the capacitive sensing portion 1500 and the keycap 200 . The capacitive sensing portion 1500 is more sensitive, which is beneficial to improving the detection effectiveness of the capacitive sensing portion 1500 .

[0152] Optionally, when the number of the capacitive sensing portion 1500 is one, the capacitive sensing portion 1500 is located on a side of the second flexible circuit board 1400 facing the keycap 200 .

[0153] Optionally, when there are multiple capacitive sensing parts 1500, the multiple capacitive sensing parts 1500 are all located on the side of the second flexible circuit board 1400 facing the keycap 200, and the multiple capacitive sensing parts 1500 are arranged at intervals along the direction from the first support part 120 to the second support part 130.

[0154] like Figure 11 As shown, the coordinates from the left end to the right end of the key cap 200 are set to 0 to max.

[0155] Signal acquisition is performed using chips such as the AD7147 or CSA37F72. Assume that the signal changes for the five channels are Δ1, Δ2, Δ3, Δ4, and Δ5. The relationship between the coordinate y (i.e., 0 to max) and the capacitance signal is: y = (0 × Δ1 + (max / 4) × Δ2 + (max / 2) × Δ3 + ((3 × max) / 4) × Δ4 + max × Δ5) / (Δ1 + Δ2 + Δ3 + Δ4 + Δ5). This proportional relationship determines the coordinate position of the touch. When a hand slides, the touch position changes. The capacitive sensing unit 1500 detects the sliding position in real time. By combining signal processing with algorithmic processing, touch and sliding events can be extracted, enabling touch and sliding sensing.

[0156] The capacitive sensing unit 1500 detects sliding motion with higher sliding sensitivity and resolution. Combined with pressure sensing, sliding detection is more accurate.

[0157] In some embodiments, as Figure 12 As shown, the first connecting portion 500 includes a plurality of connecting blocks 520; a portion of the connecting blocks 520 is located between the connection between the second supporting portion 130 and the first supporting portion 120 and the middle portion 132 of the second supporting portion; another portion of the connecting blocks 520 is located between the connection between the second supporting portion 130 and the third supporting portion 140 and the middle portion 132 of the second supporting portion.

[0158] In this embodiment, the structure of the first connecting portion 500 is further defined.

[0159] Specifically, the first connecting portion 500 includes a plurality of connecting blocks 520. Some of the connecting blocks 520 are located between the connection between the second support portion 130 and the first support portion 120 and the middle portion 132 of the second support portion. Another portion of the connecting blocks 520 are located between the connection between the second support portion 130 and the third support portion 140 and the middle portion 132 of the second support portion.

[0160] This arrangement can reduce the matching area between the keycap 200 and the support structure 100 while ensuring the effectiveness and feasibility of the connection between the keycap 200 and the second support portion 130. In this way, when the keycap 200 is pressed, the support structure 100 is easily deformed, which is beneficial to improving the sensitivity and accuracy of pressure detection.

[0161] Optionally, the plurality of connection blocks 520 are arranged at equal intervals.

[0162] Optionally, some of the plurality of connection blocks 520 are arranged at equal intervals.

[0163] like Figure 12 As shown, when force F is applied to the keycap 200, the pressures borne by the pressure sensing portion are F1 and F2 respectively, where F=F1+F2. The key assembly 1 can also achieve press and slide sensing. This arrangement can reduce the material input of the first connecting portion 500 and can reduce the production cost of the product. At the same time, since this arrangement reduces the contact area between the first connecting portion 500 and the second supporting portion 130 and the keycap 200, it can reduce signal hysteresis to a certain extent, making the signal more reliable. It is understandable that if the contact area between the first connecting portion 500 and the second supporting portion 130 and the keycap 200 is large, then when the first connecting portion 500 is pressed, the first connecting portion 500 will take a certain amount of time to compress, which will cause signal hysteresis.

[0164] In some embodiments, as Figure 9 and Figure 10 As shown, the key assembly 1 also includes: a first connecting member 1600; a second connecting member 1700, the first connecting member 1600 and the second connecting member 1700 are both arranged on the side of the supporting structure 100 away from the keycap 200, and the switch 400 is located between the first connecting member 1600 and the second connecting member 1700; a connecting member 1800, the connecting member 1800 is rotatably connected between the first connecting member 1600 and the second connecting member 1700, and the connecting member 1800 is arranged at intervals on the outside of the switch 400.

[0165] In this embodiment, the structure of the key assembly 1 is further defined. The key assembly 1 further includes a first connector 1600, a second connector 1700, and a connecting member 1800. The first connector 1600 and the second connector 1700 are both connected to the support structure 100. The first connector 1600, the second connector 1700, and the switch 400 are located on the same side of the support structure 100, and the switch 400 is located between the first connector 1600 and the second connector 1700. The connecting member 1800 is connected between the first connector 1600 and the second connector 1700 and is spaced apart on the outside of the switch 400.

[0166] The frame 22 of the electronic device 2 is provided with at least one limiting structure 1900 , and the first connecting member 1600 , the second connecting member 1700 and the connecting member 1800 are used in conjunction with the limiting structure 1900 .

[0167] Specifically, the electronic device 2 includes a frame 22, which is provided with a receiving groove 222, and the key assembly 1 is disposed in the receiving groove 222. When the first fixing portion 600 of the key assembly 1 is connected to the groove bottom 2224 of the receiving groove, the limiting structure 1900 includes a first limiting plate 1910 and a second limiting plate 1920 arranged at intervals along a preset direction, and the connecting member 1800 of the key assembly 1 is located between the first limiting plate 1910 and the second limiting plate 1920. The connecting member 1800 can move relative to the first limiting plate 1910 and the second limiting plate 1920 along the groove depth direction of the receiving groove 222; wherein the preset direction is perpendicular to the groove depth direction of the receiving groove 222, and the preset direction is perpendicular to the direction from the first support portion 120 to the second support portion 130. The direction from the slot opening 2222 of the receiving slot to the slot bottom 2224 of the receiving slot is the slot depth direction of the receiving slot 222 . Meanwhile, the direction from the slot bottom 2224 of the receiving slot to the slot opening 2222 of the receiving slot is also the slot depth direction of the receiving slot 222 .

[0168] It is understandable that the connecting member 1800 is rotatably connected between the first connecting member 1600 and the second connecting member 1700. That is, one end of the connecting member 1800 is rotatably connected to the first connecting member 1600, and the other end of the connecting member 1800 is rotatably connected to the second connecting member 1700.

[0169] It is understandable that the connector 1800 is movably connected to the limiting structure 1900. Take for example the connector 1800 being able to move relative to the first limiting plate 1910 and the second limiting plate 1920 along the groove depth direction of the accommodating groove 222. The limiting structure 1900 is able to limit the movement trajectory of the button assembly 1 in the direction from the first limiting plate 1910 to the second limiting plate 1920. This setting will neither hinder the movement of the button assembly 1 nor cause the button assembly 1 to shake in the direction from the first limiting plate 1910 to the second limiting plate 1920. In addition, the cooperation of the first connector 1600, the second connector 1700, the connector 1800 and the limiting structure 1900 can ensure the balance of force on the support structure 100. When the button assembly 1 is pressed, the button assembly 1 can move as a whole, and there will be no partial tilting of the button assembly 1, thereby improving the performance of the product.

[0170] In addition, the connecting members 1800 are arranged at intervals on the outside of the switch 400 , and the connecting members 1800 will not hinder the operation of the switch 400 .

[0171] Alternatively, as Figure 10 As shown, the connecting member 1800 includes two arc segments and a strip segment, the strip segment is connected between the two arc segments, one arc segment is rotatably connected to the first connecting member 1600, and the other arc segment is rotatably connected to the second connecting member 1700. The connecting member 1800 can also move slightly up and down along the depth direction of the accommodating groove 222 relative to the first limiting plate 1910 and the second limiting plate 1920.

[0172] like Figures 1 to 7 As shown, according to some other embodiments of the present application, the electronic device 2 includes: a frame 22, the frame 22 is provided with a receiving groove 222; and a key assembly 1 as in any of the above embodiments, the key assembly 1 is provided in the receiving groove 222.

[0173] The electronic device 2 of the present application includes a frame 22 and the key assembly 1 in any of the above embodiments, and therefore has all the beneficial effects of the above key assembly 1, which will not be described one by one here.

[0174] In some embodiments, as Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the keycap 200 is located in the area enclosed by the notch 2222 of the receiving groove; the first fixing portion 600 of the key assembly 1 is connected to the bottom 2224 of the receiving groove; or the part of the switch 400 located outside the support structure 100 is connected to the bottom 2224 of the receiving groove.

[0175] In this embodiment, the matching structure of the receiving groove 222 , the keycap 200 , the first fixing portion 600 of the key assembly 1 , the switch 400 and the supporting structure 100 is further defined.

[0176] The frame 22 is provided with a receiving slot 222 having a notch. The keycap 200 is positioned within the area enclosed by the notch 2222 of the receiving slot. Specifically, the walls of the notch extend along the circumference of the keycap 200, and the notch is spaced apart from the keycap 200. This allows the keycap 200 to be exposed outside the frame 22 through the notch, providing structural support for the user to activate the keycap 200.

[0177] The wall of the notch is spaced apart from the periphery of the keycap 200, that is, there is a gap 1300 between the wall of the notch and the keycap 200, so that the movement of the keycap 200 is not hindered, thereby preventing the keycap 200 from being stuck in the notch.

[0178] The first fixing portion 600 of the key assembly 1 is arranged on the side of the switch 400 away from the support structure 100. The first fixing portion 600 connects the switch 400 and the groove wall of the accommodating groove 222 of the electronic device 2, so that the key assembly 1 and the frame 22 of the electronic device 2 are effectively and reliably assembled together.

[0179] The support structure 100 has an opening 150 on one side facing away from the keycap 200. The opening 150 communicates with the mounting cavity 110 and allows the other portion of the switch 400 to extend out of the support structure 100. The portion of the switch 400 outside the support structure 100 is connected to the bottom 2224 of the receiving groove.

[0180] In some embodiments, when the first fixing portion 600 is connected to the bottom 2224 of the accommodating groove, the elastic portion 700 of the key assembly 1 abuts against the bottom 2224 of the accommodating groove, or the first limiting member 800 and the second limiting member 900 of the key assembly 1 are both connected to the groove wall of the accommodating groove 222, or the first supporting portion 120 and the third supporting portion 140 of the key assembly 1 abut against the groove wall of the accommodating groove 222.

[0181] In this embodiment, the matching structure between the button assembly 1 and the frame 22 is further defined.

[0182] When the first fixing portion 600 is connected to the bottom 2224 of the receiving groove, the elastic portion 700 of the key assembly 1 abuts against the bottom 2224 of the receiving groove. Specifically, multiple elastic portions 700 are provided on the side of the support structure 100 facing away from the keycap 200. Each elastic portion 700 is connected between the support structure 100 and the wall of the receiving groove 222 of the electronic device 2. The multiple elastic portions 700 are arranged at intervals along the circumference of the switch 400.

[0183] This arrangement increases the contact area and angle between the support structure 100 and the receiving groove 222, allowing the support structure 100 to be supported from multiple directions and angles. This allows the key assembly 1 to be installed and fixed from multiple directions and angles. This allows the key assembly 1 to maintain balance and meet the user's need to move the key assembly 1 downward, improving the user's feel when actuating the key assembly 1.

[0184] When the first fixing portion 600 is connected to the groove bottom 2224 of the accommodating groove, the first limiting member 800 and the second limiting member 900 of the button assembly 1 are both connected to the groove wall of the accommodating groove 222 .

[0185] Specifically, the key assembly 1 also includes a first limiter 800 and a second limiter 900. The first limiter 800 is provided on the first support portion 120, and the second limiter 900 is provided on the third support portion 140. The first limiter 800 is connected between the first support portion 120 and the groove wall of the receiving groove 222 of the electronic device 2, and the second limiter 900 is connected between the third support portion 140 and the groove wall of the receiving groove 222 of the electronic device 2. In order to increase the contact area and contact angle between the support structure 100 and the receiving groove 222, the support structure 100 and the groove wall of the receiving groove 222 can be connected from multiple directions and multiple angles, thereby ensuring the stability and reliability of the assembly of the key assembly 1 and the frame 22 of the electronic device 2.

[0186] Furthermore, the first and second stoppers 800 and 900 are used to position the support structure 100, ensuring that the distance between the first fixing portion 600 and the support structure 100, along the distance from the keycap 200 to the support structure 100, and from the first fixing portion 600 to the support structure 100, is less than the height of the switch 400. In other words, along the distance from the keycap 200 to the support structure 100, the height of the space between the first fixing portion 600 and the support structure 100 for mounting the switch 400 is less than the height of the switch 400. This ensures that the switch 400 is in an interference fit, facilitating its securement and ensuring a high degree of travel consistency for the key assembly 1.

[0187] When the first fixing portion 600 is connected to the bottom 2224 of the receiving groove, the first supporting portion 120 and the third supporting portion 140 abut against the walls of the receiving groove 222, ensuring that the distances from the keycap 200 to the support structure 100, and from the first fixing portion 600 to the support structure 100, are less than or equal to the height of the switch 400. In other words, the height of the space between the first fixing portion 600 and the support structure 100, used to mount the switch 400, is less than the height of the switch 400. This ensures that the switch 400 is installed in an interference fit, facilitating its securement and ensuring a high degree of travel consistency for the key assembly 1.

[0188] Optionally, the electronic device 2 can be a mobile terminal such as a mobile phone, a wearable device, a tablet computer, a laptop computer, a mobile computer, an augmented reality device (also known as an AR (Augmented Reality) device), a virtual reality device (also known as a VR (Virtual Reality) device) and a handheld game console, etc.

[0189] In some embodiments, as Figure 10 As shown, when the first fixing portion 600 is connected to the bottom 2224 of the accommodating groove, the groove wall of the accommodating groove 222 is provided with at least one limiting structure 1900; the limiting structure 1900 includes a first limiting plate 1910 and a second limiting plate 1920 arranged at intervals along a preset direction, and the connecting member 1800 of the button assembly 1 is movably connected between the first limiting plate 1910 and the second limiting plate 1920; wherein, the preset direction is perpendicular to the groove depth direction of the accommodating groove 222, and the preset direction is perpendicular to the direction from the first support portion 120 to the second support portion 130 of the button assembly 1.

[0190] In this embodiment, the structure of the electronic device 2 is further defined.

[0191] When the first fixing portion 600 is connected to the bottom 2224 of the receiving groove, the groove wall of the receiving groove 222 is provided with at least one limiting structure 1900 , and the number of the limiting structure 1900 is one, or the number of the limiting structures 1900 is multiple.

[0192] The limiting structure 1900 includes a first limiting plate 1910 and a second limiting plate 1920. The first limiting plate 1910 and the second limiting plate 1920 are arranged at intervals along a preset direction. The preset direction is perpendicular to the groove depth direction of the accommodating groove 222, and the preset direction is perpendicular to the direction from the first support part 120 to the second support part 130 of the button assembly 1.

[0193] The connecting member 1800 of the key assembly 1 is movably connected between the first limiting plate 1910 and the second limiting plate 1920. That is, the connecting member 1800 can move relative to the first limiting plate 1910 and the second limiting plate 1920. For example, the connecting member 1800 can move relative to the first limiting plate 1910 and the second limiting plate 1920 along the depth direction of the receiving groove 222. The first connecting member 1600, the second connecting member 1700, and the connecting member 1800 are used in conjunction with the limiting structure 1900.

[0194] For example, the connecting member 1800 can move relative to the first limiting plate 1910 and the second limiting plate 1920 along the depth direction of the accommodating groove 222. The limiting structure 1900 can limit the movement trajectory of the button assembly 1 in the direction from the first limiting plate 1910 to the second limiting plate 1920. This setting neither hinders the movement of the button assembly 1 nor causes the button assembly 1 to shake in the direction from the first limiting plate 1910 to the second limiting plate 1920. In addition, the cooperation between the first connecting member 1600, the second connecting member 1700, the connecting member 1800 and the limiting structure 1900 can ensure the balanced force on the support structure 100. When the button assembly 1 is pressed, the button assembly 1 can move as a whole without the button assembly 1 being partially tilted, thereby improving the performance of the product.

[0195] Specifically, the connecting member 1800 is rotatably connected to the first connecting member 1600, and the connecting member 1800 is rotatably connected to the second connecting member 1700. The connecting member 1800 can also move slightly up and down along the depth direction of the accommodating groove 222 relative to the first limiting plate 1910 and the second limiting plate 1920.

[0196] Optionally, the key assembly 1 of the present application is located on the side of the electronic device 2. In addition to supporting pot switches, it also supports sliding operations and other force-pressing operations, enabling multi-dimensional interactive input with rich feedback, low false-touch rate, high sensitivity, and fast response, providing users with a rich and excellent interactive experience. The structural arrangement of the key assembly 1 offers the advantages of convenient assembly and disassembly, low product cost, and high assembly yield.

[0197] The first connection portion 500 includes any one of the following or a combination thereof: double-sided adhesive, 502 adhesive, thermosetting adhesive, shadowless adhesive, photosensitive adhesive, UV-curable adhesive, epoxy adhesive film, two-component adhesive, and foam adhesive.

[0198] The second connection portion 1200 includes any one of the following or a combination thereof: double-sided tape, 502 glue, thermosetting glue, shadowless glue, photosensitive glue, UV-curing glue, epoxy film, two-component glue, and foam glue.

[0199] The first support member 160 includes any one of the following or a combination thereof: a steel sheet, an aluminum sheet, a copper sheet, a ceramic piece, and a glass piece.

[0200] The second support member 170 includes any one of the following or a combination thereof: a steel sheet, an aluminum sheet, a copper sheet, a ceramic piece, and a glass piece.

[0201] The third connection portion 180 includes any one of the following or a combination thereof: a spot welding portion, an adhesive portion, and a frosted welding portion.

[0202] The first flexible circuit board 310 may also be replaced by a printed circuit board 1000 and a thin film circuit board.

[0203] like Figure 1 As shown, the electronic device 2 includes a frame 22, a keycap 200, a first connecting part 500, a first supporting member 160, a second supporting member 170, a third connecting part 180, a second connecting part 1200, a first flexible circuit board 310, a pressure sensor 320, a switch 400, a circuit board 1000, a first fixing part 600 and an elastic part 700.

[0204] The pressure sensor 320 includes any one of the following or a combination thereof: a piezoresistive sensor, a pressure capacitor, a pressure inductor, a piezoelectric ceramic, and an ultrasonic sensor.

[0205] Piezoresistive sensors include any one of the following or a combination thereof: polymer piezoresistive sensors, metal wire strain gauges, silicon sheet strain gauges, polycrystalline or amorphous semiconductor sensors, copper-nickel alloy sensors, carbon nanotubes, graphene sensors, piezoresistive pressure sensors, conductor and insulator composite sensors, and piezoelectric ceramics.

[0206] The pressure sensor 320 includes two first pressure sensing portions 322 and two second pressure sensing portions 324. Along the path from the second support portion 130 to the first support portion 120, the two first pressure sensing portions 322 are located on the same side of the first connecting portion 500, or at least one first pressure sensing portion 322 is disposed opposite the first connecting portion 500. Along the path from the second support portion 130 to the first support portion 120, the two second pressure sensing portions 324 are located on the same side of the first connecting portion 500, or at least one second pressure sensing portion 324 is disposed opposite the first connecting portion 500.

[0207] When the two first pressure sensing portions 322 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the first supporting portion 120, the signals of the two first pressure sensing portions 322 are affected only by distance when the keycap 200 is pressed. When the two second pressure sensing portions 324 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the first supporting portion 120, the signals of the two second pressure sensing portions 324 are affected only by distance when the keycap 200 is pressed.

[0208] The elastic portion 700 includes at least one of a spring, foam, a balance bar, and a rotating shaft.

[0209] The process of manufacturing the key assembly 1 is as follows: printing the piezoresistive sensor on a soft material such as a first flexible circuit board 310 to form a sensor group 300; attaching the sensor group 300 to the first support member 160, for example, the first support member 160 includes a long steel sheet; then welding the long steel sheet to the second support member 170 to form an end-fixed beam pressure sensing device, for example, the second support member 170 includes a steel sheet; a deformation space of the beam needs to be reserved below the end-fixed beam pressure sensing device. Figure 3 The spacing d between the first flexible circuit board 310 and the second support member 170 is shown to meet the use requirement of providing deformation space; the pot switch is attached to the frame 22, and the pot switch can be attached facing forward or backward; then the end-fixed beam pressure-sensing device is attached to the pot switch to form a sensing device; the keycap 200 is attached to the upper surface of the sensing device to complete the assembly.

[0210] The key cap 200 is a rigid body, and the peripheral wall 210 of the key cap is required to be located outside the peripheral wall 510 of the first connecting portion. Figure 2 As shown, the distances from the outer wall 210 of the keycap to the outer wall 510 of the first connecting portion are denoted as x and y. The first connecting portion 500 has a certain thickness so that the end-fixed beam pressure sensing device can produce a good deformation when the keycap 200 is pressed.

[0211] Similarly, if Figure 3 As shown, a design that avoids air gaps below both ends of the keycap 200 achieves the same effect. The outer wall of the second mating segment 230 is located inward of the outer wall of the first mating segment 220. The distances between the outer wall of the second mating segment 230 and the outer wall of the first mating segment 220 are denoted as x and y, respectively. In this case, the length of the first connecting portion 500 in the direction from the first support portion 120 to the second support portion 130 does not affect the deformation of the end-fixed beam pressure-sensing device.

[0212] When the keycap 200 is pressed, the support structure 100 twists downward, causing the resistances of R2 and R4 to increase, while the resistances of R1 and R3 to decrease. The greater the force, the greater the absolute value of the rate of change of each resistance.

[0213] like Figure 13As shown in the figure, taking the series voltage divider circuit as an example, R1 and R2 form a series voltage divider circuit. Using a constant voltage source, input voltage U is applied to both ends of V+ and V-. i , detect the potential at V1, or measure the output voltage U1 between V1 and ground. Wherein, V2 is the same as V1 and is not described here.

[0214] U1=(R2 / (R1+R2))×U i .

[0215] △U1=((R2+△R2) / (R1+△R1+R2+△R2)-R2 / (R1+R2))×U i =((R1×R2) / (R1+R2) 2 )×(K2-K1)×U i .

[0216] Assuming 3 / 4≤R1 / R2≤4 / 3, so 3 / 7≤R1 / (R1+R2)≤4 / 7, 3 / 7≤R2 / (R1+R2)≤4 / 7.

[0217] Therefore, 0.245 ≤ (R1 × R2) / (R1 + R2) 2 ≤0.25.

[0218] Therefore, the electrical signal S1 is: S1 = ΔU1 ≈ 1 / 4 (K2-K1) × U i .

[0219] Similarly, the electrical signal S2 is: S2 = ΔU2 ≈ 1 / 4 (K4-K3) × U i .

[0220] like Figure 2 As shown, when force F is applied to the keycap 200, the pressures borne by the pressure sensing portions at both ends of the support structure 100 are F1 and F2 respectively. ΔU1 and ΔU2 are both voltage changes. ΔR1 and ΔR2 are both resistance changes.

[0221] Through mechanical simulation, the relationship between F, F1 and F2 is: F≈F1+F2.

[0222] like Figure 14 and Figure 15 As shown, when force F is applied to the middle of the keycap 200 , F1≈F2, F≈F1+F2; when force F is applied to the position of F2, F2>F1, F≈F1+F2.

[0223] F = uniformly distributed load K × length L (when the width remains unchanged).

[0224] Under a certain force, the strain of the support structure 100 is positively correlated with the force.

[0225] Since ΔR / R = GF × ε, ΔR / R is the rate of change of resistance, GF is the gauge factor, and ε is the strain. Therefore, K2, K1, and F1 are positively correlated. Therefore, S1 and F1 are positively correlated. Similarly, S2 and F2 are positively correlated. K1, K2, K3, and K4 are all rates of change of resistance.

[0226] Therefore, F = S × coef = (S1 + S2) × coef. Coef is the pressure coefficient, coef is a constant, and S is the electrical signal.

[0227] Therefore, by detecting S1 and S2, the size of the pressing force can be obtained. Combined with the pressing duration, functions such as light press, heavy press, long press, and continuous click can be realized.

[0228] like Figure 14 As shown, assuming that the length of the second supporting portion 130 of the first supporting member 160 is L (L is a constant), and the distance between the position where the keycap 200 is pressed and above the left fulcrum of the keycap 200 is L1, L1 / L = F2 / (F1+F2) = S2 / (S1+S2), so L1 = (S2 / (S1+S2))×L.

[0229] Therefore, by detecting S2 / (S1+S2), the pressing position can be identified, and combined with the duration information, the detection of sliding interaction can be realized.

[0230] like Figure 16 As shown, the back-end signal processing circuit detects S1 and S2, and performs data calculations and algorithm processing to identify whether a press or slide interaction has occurred. In addition, the feedback circuit can provide a confirmation signal for the user's interaction, greatly improving the user's interactive experience. Here, ch0 represents S1, ch1 represents S2, and ch0+ch1 represents S1 and S2.

[0231] The connection circuit of the multiple pressure sensing parts of the pressure sensor 320 includes any of the following: a series voltage divider circuit, a parallel shunt circuit, a Wheatstone bridge circuit, an RC series circuit, an RC oscillation circuit, an RLC parallel resonant circuit, etc., which are not listed here one by one.

[0232] This application uses two single-bridge channel circuits and prints four resistors. In actual use, different sensor circuits composed of one resistor or multiple resistors can be used.

[0233] Below the sensor group 300 is a pot switch. This can be connected to a separate pot switch circuit (e.g., circuit board 1000) to re-key the keycap 200, or it can be used to provide force feedback (simulating pot switch feedback) from a gravity press on the keycap 200. Both methods achieve the same effect when re-keying the keycap 200. Therefore, in combination, the key assembly 1 of the present application not only supports pot switch functionality, but also supports sliding and other pressure input functions.

[0234] The present application provides a method for controlling an electronic device, such as Figure 17 As shown, the control method of the electronic device includes:

[0235] Step 1202, pressure signal and switch signal;

[0236] Step 1204: Check whether the primary condition of the interactive action is met. If so, proceed to step 1206; if not, proceed to step 1202.

[0237] Step 1206, interactive algorithm processing;

[0238] Step 1208: Check whether the interaction action triggering condition is met. If so, proceed to step 1210; if not, proceed to step 1202.

[0239] Step 1210: Report to the application processor to trigger the corresponding interactive function;

[0240] Step 1212: The application processor drives the feedback module to operate in a corresponding mode to complete feedback of the corresponding input;

[0241] Step 1214: Check whether the exit condition of the interactive action is met. If so, proceed to step 1216. If not, proceed to step 1214 again.

[0242] Step 1216: Report to the application processor and exit the corresponding interactive function;

[0243] Step 1218: The application processor drives the feedback module to complete the exit feedback.

[0244] Detect pressure signals to determine whether interaction conditions (such as light press, hard press, long press, and sliding) are met.

[0245] Detect pressure signals and switch signals to determine whether the primary conditions for interactive actions (light press, hard press, long press, sliding, etc.) are met.

[0246] When the trigger conditions of the interactive action are met, the corresponding interactive function is triggered, and the corresponding feedback module is driven to work (in addition to vibration feedback, other feedback forms such as sound, light, and temperature can also be used).

[0247] When the exit condition of the interactive action is met, the corresponding interactive function will be exited.

[0248] The key assembly 1 of the present application has low cost.

[0249] The button component 1 of the present application has rich interactions. One button component 1 supports sliding interaction and pressure-graded interaction. Different interactions have different experience feedback, providing users with a rich interactive experience.

[0250] The button assembly 1 of the present application has a low false touch rate. A light press uses motor feedback, and a heavy press feedback is the force feedback of the pot switch. The feedback of light press and heavy press is clearly distinguished, and the user can clearly perceive his or her own operation. The probability of false touches such as "light press mistakenly touching a heavy press" and "heavy press mistakenly touching a long press" is low.

[0251] The key assembly 1 of the present application is easy to assemble and disassemble. It only requires assembling the pot switch and the end-fixed beam pressure-sensing device to the frame 22, and then fitting the keycap 200 to the end-fixed beam pressure-sensing device to complete the assembly. The assembly is simple and quick.

[0252] The key assembly 1 of the present application has high pressure sensitivity and adopts an end-fixed beam pressure sensing device. The force applied to the keycap 200 is directly and centrally transmitted to the support structure 100. The first support member 160 of the support structure 100 drives the first flexible circuit board 310 and the pressure sensor 320 to deform, making the pressure detection have very high sensitivity.

[0253] The key assembly 1 of the present application has high mechanical reliability. The sensor group 300 is arranged on the lower surface of the first support member 160. External force will not directly act on the sensor group 300, which can greatly improve the pressure sensitivity reliability.

[0254] like Figure 4 As shown, the electronic device 2 includes a frame 22, a keycap 200, a first connecting part 500, a first supporting member 160, a second supporting member 170, a third connecting part 180, a second connecting part 1200, a first flexible circuit board 310, a pressure sensor 320, a switch 400, a circuit board 1000 and a first fixing part 600.

[0255] The pressure sensor 320 includes any one of the following or a combination thereof: a piezoresistive sensor, a pressure capacitor, a pressure inductor, a piezoelectric ceramic, and an ultrasonic sensor.

[0256] Piezoresistive sensors include any one of the following or a combination thereof: polymer piezoresistive sensors, metal wire strain gauges, silicon sheet strain gauges, polycrystalline or amorphous semiconductor sensors, copper-nickel alloy sensors, carbon nanotubes, graphene sensors, piezoresistive pressure sensors, conductor and insulator composite sensors, and piezoelectric ceramics.

[0257] The pressure sensor 320 includes two first pressure sensing portions 322 and two second pressure sensing portions 324. Along the path from the second support portion 130 to the first support portion 120, the two first pressure sensing portions 322 are located on the same side of the first connecting portion 500, or at least one first pressure sensing portion 322 is disposed opposite the first connecting portion 500. Along the path from the second support portion 130 to the first support portion 120, the two second pressure sensing portions 324 are located on the same side of the first connecting portion 500, or at least one second pressure sensing portion 324 is disposed opposite the first connecting portion 500.

[0258] When the two first pressure sensing portions 322 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the first supporting portion 120, the signals of the two first pressure sensing portions 322 are affected only by distance when the keycap 200 is pressed. When the two second pressure sensing portions 324 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the first supporting portion 120, the signals of the two second pressure sensing portions 324 are affected only by distance when the keycap 200 is pressed.

[0259] An opening 150 is defined on a side of the support structure 100 facing away from the keycap 200 . The opening 150 communicates with the mounting cavity 110 , and another portion of the switch 400 extends out of the support structure 100 through the opening 150 .

[0260] Slide and press detection principle and Figures 1 to 3 The same as the key assembly 1, the key cap 200 is pressed with a large pressure, the support structure 100 moves downward, the pot switch is closed, and the pot switch function is triggered. Similarly, the pot switch can also be used to provide force feedback for gravity pressing.

[0261] like Figure 5 As shown, the electronic device 2 includes a frame 22, a keycap 200, a first connecting part 500, a first supporting member 160, a second supporting member 170, a third connecting part 180, a second connecting part 1200, a first flexible circuit board 310, a pressure sensor 320, a switch 400, a circuit board 1000 and a first fixing part 600.

[0262] The pressure sensor 320 includes any one of the following or a combination thereof: a piezoresistive sensor, a pressure capacitor, a pressure inductor, a piezoelectric ceramic, and an ultrasonic sensor.

[0263] Piezoresistive sensors include any one of the following or a combination thereof: polymer piezoresistive sensors, metal wire strain gauges, silicon sheet strain gauges, polycrystalline or amorphous semiconductor sensors, copper-nickel alloy sensors, carbon nanotubes, graphene sensors, piezoresistive pressure sensors, conductor and insulator composite sensors, and piezoelectric ceramics.

[0264] The pressure sensor 320 includes two first pressure sensing portions 322 and two second pressure sensing portions 324. Along the path from the second support portion 130 to the first support portion 120, the two first pressure sensing portions 322 are located on the same side of the first connecting portion 500, or at least one first pressure sensing portion 322 is disposed opposite the first connecting portion 500. Along the path from the second support portion 130 to the first support portion 120, the two second pressure sensing portions 324 are located on the same side of the first connecting portion 500, or at least one second pressure sensing portion 324 is disposed opposite the first connecting portion 500.

[0265] When the two first pressure sensing portions 322 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the first supporting portion 120, the signals of the two first pressure sensing portions 322 are affected only by distance when the keycap 200 is pressed. When the two second pressure sensing portions 324 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the first supporting portion 120, the signals of the two second pressure sensing portions 324 are affected only by distance when the keycap 200 is pressed.

[0266] This arrangement allows the limit of the key assembly 1 to be balanced and has low cost. The support structure 100 is tightly integrated with the pot switch, and has high tolerance consistency.

[0267] like Figure 6 As shown, the electronic device 2 includes a frame 22, a keycap 200, a first connecting part 500, a first supporting member 160, a second supporting member 170, a third connecting part 180, a second connecting part 1200, a first flexible circuit board 310, a pressure sensor 320, a switch 400, a circuit board 1000, a first limiting member 800, a second limiting member 900 and a first fixing part 600.

[0268] The pressure sensor 320 includes any one of the following or a combination thereof: a piezoresistive sensor, a pressure capacitor, a pressure inductor, a piezoelectric ceramic, and an ultrasonic sensor.

[0269] Piezoresistive sensors include any one of the following or a combination thereof: polymer piezoresistive sensors, metal wire strain gauges, silicon sheet strain gauges, polycrystalline or amorphous semiconductor sensors, copper-nickel alloy sensors, carbon nanotubes, graphene sensors, piezoresistive pressure sensors, conductor and insulator composite sensors, and piezoelectric ceramics.

[0270] The pressure sensor 320 includes two first pressure sensing portions 322 and two second pressure sensing portions 324. Along the path from the second support portion 130 to the first support portion 120, the two first pressure sensing portions 322 are located on the same side of the first connecting portion 500, or at least one first pressure sensing portion 322 is disposed opposite the first connecting portion 500. Along the path from the second support portion 130 to the first support portion 120, the two second pressure sensing portions 324 are located on the same side of the first connecting portion 500, or at least one second pressure sensing portion 324 is disposed opposite the first connecting portion 500.

[0271] When the two first pressure sensing portions 322 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the first supporting portion 120, the signals of the two first pressure sensing portions 322 are affected only by distance when the keycap 200 is pressed. When the two second pressure sensing portions 324 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the first supporting portion 120, the signals of the two second pressure sensing portions 324 are affected only by distance when the keycap 200 is pressed.

[0272] This arrangement allows the limit of the key assembly 1 to be balanced and has low cost. The support structure 100 is tightly integrated with the pot switch, and has high tolerance consistency.

[0273] This arrangement adds a first limiting member 800 and a second limiting member 900 above the support structure 100 , so that during assembly, the pot switch is in an interference fit state, which facilitates assembly and has high key stroke consistency.

[0274] like Figure 7 As shown, the electronic device 2 includes a frame 22, a keycap 200, a first connecting part 500, a first supporting member 160, a second supporting member 170, a third connecting part 180, a second connecting part 1200, a first flexible circuit board 310, a pressure sensor 320, a switch 400, a circuit board 1000 and a first fixing part 600.

[0275] The pressure sensor 320 includes any one of the following or a combination thereof: a piezoresistive sensor, a pressure capacitor, a pressure inductor, a piezoelectric ceramic, and an ultrasonic sensor.

[0276] Piezoresistive sensors include any one of the following or a combination thereof: polymer piezoresistive sensors, metal wire strain gauges, silicon sheet strain gauges, polycrystalline or amorphous semiconductor sensors, copper-nickel alloy sensors, carbon nanotubes, graphene sensors, piezoresistive pressure sensors, conductor and insulator composite sensors, and piezoelectric ceramics.

[0277] The pressure sensor 320 includes two first pressure sensing portions 322 and two second pressure sensing portions 324. Along the path from the second support portion 130 to the first support portion 120, the two first pressure sensing portions 322 are located on the same side of the first connecting portion 500, or at least one first pressure sensing portion 322 is disposed opposite the first connecting portion 500. Along the path from the second support portion 130 to the first support portion 120, the two second pressure sensing portions 324 are located on the same side of the first connecting portion 500, or at least one second pressure sensing portion 324 is disposed opposite the first connecting portion 500.

[0278] When the two first pressure sensing portions 322 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the first supporting portion 120, the signals of the two first pressure sensing portions 322 are affected only by distance when the keycap 200 is pressed. When the two second pressure sensing portions 324 are located on the same side of the first connecting portion 500 along the second supporting portion 130 to the first supporting portion 120, the signals of the two second pressure sensing portions 324 are affected only by distance when the keycap 200 is pressed.

[0279] This arrangement allows the limit of the key assembly 1 to be balanced and has low cost. The support structure 100 is tightly integrated with the pot switch, and has high tolerance consistency.

[0280] This arrangement enables the first support portion 120 and the second support portion 130 of the support structure 100 to abut against the groove wall of the receiving groove 222 of the frame 22, so that during assembly, the pot switch is in an interference fit state, easy to assemble, and with high key stroke consistency.

[0281] Optionally, the number of switches is one or more, where more means greater than or equal to 2.

[0282] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0283] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A key assembly, characterized in that: include: A supporting structure, wherein a mounting cavity is provided in the supporting structure; a keycap, disposed on one side of the support structure, and driving the support structure to deform when the keycap is pressed; a sensor group disposed in the mounting cavity, the sensor group comprising a first flexible circuit board and a pressure sensor, the first flexible circuit board being located between the pressure sensor and the keycap, the pressure sensor being spaced apart from a cavity wall of the mounting cavity; a switch disposed on a side of the support structure facing away from the keycap, or a portion of the switch is located within the mounting cavity and connected to the first flexible printed circuit board, and another portion of the switch extends out of the side of the support structure facing away from the keycap; Wherein, the number of the switch is at least one.

2. The key assembly according to claim 1, wherein: The support structure includes a first support portion, a second support portion and a third support portion, wherein the second support portion is connected between the first support portion and the third support portion, and the first support portion, the second support portion and the third support portion are located on the same side of the mounting cavity; The key assembly further includes a first connecting portion, which is connected between the second supporting portion and the key cap, and a gap is formed between an outer edge of the key cap and the second supporting portion.

3. The key assembly according to claim 2, characterized in that: The outer peripheral wall of the key cap is located outside the outer peripheral wall of the first connecting portion.

4. The key assembly according to claim 2, wherein: The keycap comprises: First matching section; The second mating section, the first mating section and the second mating section are arranged along the direction from the keycap to the first connecting portion, and the second mating section is connected between the first mating section and the first connecting portion, and the outer peripheral wall of the second mating section is located on the inner side of the outer peripheral wall of the first mating section.

5. The key assembly according to any one of claims 2 to 4, characterized in that: When the switch is arranged on a side of the support structure away from the keycap, the key assembly further includes a first fixing portion, which is arranged on a side of the switch away from the support structure and is used for installing and positioning the switch.

6. The key assembly according to claim 5, characterized in that: Also includes: A plurality of elastic portions are provided on a side of the support structure facing away from the keycap, a portion of the plurality of elastic portions are located on a first side of the switch, and another portion of the plurality of elastic portions are located on a second side of the switch, the first side of the switch and the second side of the switch are arranged opposite to each other, and the elastic portions are used to support the support structure.

7. The key assembly according to claim 5, characterized in that: Also includes: a first position-limiting member, provided on the first supporting portion; a second limiting member, provided on the third supporting portion, wherein the first limiting member, the second limiting member and the keycap are located on the same side of the supporting structure; The first limiting member and the second limiting member are both used for installation and positioning of the supporting structure.

8. The key assembly according to claim 5, characterized in that: Along the distance from the keycap to the supporting structure, the distance from the first fixing portion to the supporting structure is smaller than the height of the switch.

9. The key assembly according to claim 5, characterized in that: Also includes: A circuit board is connected between the first fixing portion and the switch.

10. The key assembly according to any one of claims 1 to 4, characterized in that: When a portion of the switch is located in the mounting cavity and connected to the first flexible circuit board, and another portion of the switch extends out of a side of the support structure away from the keycap, the key assembly further comprises a second fixing portion, which is provided on a side of the support structure away from the keycap, and is used for mounting and positioning the support structure.

11. The key assembly according to claim 10, characterized in that: An opening is provided on a side of the support structure facing away from the keycap, the opening being connected to the mounting cavity, and another part of the switch extends out of the support structure through the opening.

12. The key assembly according to any one of claims 2 to 4, characterized in that: The support structure comprises: a first support member, wherein the first support member forms the first support portion, the second support portion, and the third support portion; a second supporting member, the second supporting member being provided on a side of the first supporting member facing away from the keycap, the second supporting member and the first supporting member enclosing the mounting cavity; The third connecting portion is located between the first supporting member and the second supporting member, and is used to connect the first supporting member and the second supporting member.

13. The key assembly according to claim 12, wherein: The first support member is provided with a thinning portion, and the thinning portion includes a through hole and / or a thinning groove.

14. The key assembly according to claim 13, wherein: At least a portion of the thinned portion is disposed opposite to the pressure sensor.

15. The key assembly according to any one of claims 2 to 4, characterized in that: Also includes: a second flexible circuit board, located between the second supporting portion and the keycap; at least one capacitive sensing portion, provided on the second flexible circuit board; When there are multiple capacitive sensing parts, the multiple capacitive sensing parts are arranged at intervals along the direction from the first supporting part to the second supporting part; The capacitive sensing portion is located on a side of the second flexible circuit board facing the keycap.

16. The key assembly according to any one of claims 2 to 4, characterized in that: The first connecting portion includes a plurality of connecting blocks; A portion of the plurality of connecting blocks is located between a connection point between the second supporting portion and the first supporting portion and a middle portion of the second supporting portion; Another part of the plurality of connecting blocks is located between a connection point between the second supporting portion and the third supporting portion and a middle portion of the second supporting portion.

17. The key assembly according to any one of claims 1 to 4, characterized in that: Also includes: a first connecting member; a second connecting member, wherein the first connecting member and the second connecting member are both provided on a side of the supporting structure away from the keycap, and the switch is located between the first connecting member and the second connecting member; The connecting member is rotatably connected between the first connecting member and the second connecting member, and the connecting member is arranged at intervals on the outside of the switch.

18. An electronic device, characterized in that: include: A frame body, wherein the frame body is provided with a receiving groove; and The key assembly according to any one of claims 1 to 17, wherein the key assembly is arranged in the accommodating groove.

19. The electronic device according to claim 18, wherein: The keycap is located within the area enclosed by the notch of the receiving groove; The first fixing portion of the button assembly is connected to the bottom of the receiving groove; or The portion of the switch located outside the supporting structure is connected to the bottom of the receiving groove; When the first fixing portion is connected to the bottom of the accommodating groove, the elastic portion of the button assembly abuts against the bottom of the accommodating groove, or the first limiting member and the second limiting member of the button assembly are both connected to the groove wall of the accommodating groove, or the first supporting portion and the third supporting portion of the button assembly abut against the groove wall of the accommodating groove.

20. The electronic device according to claim 18 or 19, characterized in that: The keycap is located within the area enclosed by the notch of the receiving groove; The first fixing portion of the button assembly is connected to the bottom of the receiving groove; or The portion of the switch located outside the supporting structure is connected to the bottom of the receiving groove; When the first fixing portion is connected to the bottom of the receiving groove, the groove wall of the receiving groove is provided with at least one limiting structure; The limiting structure includes a first limiting plate and a second limiting plate arranged at intervals along a preset direction, and the connecting member of the button assembly is movably connected between the first limiting plate and the second limiting plate; The preset direction is perpendicular to the depth direction of the accommodating groove, and the preset direction is perpendicular to the direction from the first supporting portion to the second supporting portion of the button assembly.

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