Key assembly and electronic equipment

Abstract

The invention discloses a key assembly and electronic equipment. The key assembly has a first direction and a second direction which are perpendicular to each other, and comprises a key plate, an elastic piece and a key cap which are sequentially arranged in a stacked mode in the first direction. Wherein a switch element is arranged on the key board, the elastic piece comprises a base body, a first elastic supporting body and at least one second elastic supporting body, the first elastic supporting body and the second elastic supporting body are arranged on the side, close to the key cap, of the base body, and the first elastic supporting body and the second elastic supporting body are arranged in a spaced mode in the second direction; the first elastic supporting bodies are used for supporting the key caps and providing resilience force for the key caps at the same time, the projection of the first elastic supporting bodies in the first direction falls on the switch element, and the first elastic supporting bodies are arranged to move downwards in the first direction when the key caps are subjected to external pressing force and trigger the switch element.

Description

Technical Field

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

[0002] Electronic devices are usually provided with a key assembly so that users can control the electronic devices through the key assembly. When the key assembly has a relatively large size, how to improve the trigger rate when pressing the edge of the key is a technical problem that needs to be solved urgently in this field. Summary of the Invention

[0003] On the one hand, the present application provides a key assembly, which has a first direction and a second direction perpendicular to each other, and includes a key plate, an elastic member and a key cap stacked in sequence along the first direction; wherein a switch element is provided on the key plate, the elastic member includes a base, a first elastic support body and at least one second elastic support body, the first elastic support body and the second elastic support body are arranged on a side of the base close to the key cap, the first elastic support body and the second elastic support body are spaced apart along the second direction, for respectively supporting the key cap and providing rebound force for the key cap at the same time, the projection of the first elastic support body along the first direction falls on the switch element, and the first elastic support body is arranged to move downward along the first direction when the key cap is subjected to external pressing force, and trigger the switch element.

[0004] In some embodiments, the switch element can provide a segmented feel for the key assembly; when the downward movement stroke of the first elastic support body and the second elastic support body along the first direction is the same, the rebound force provided by the first elastic support body is less than the rebound force provided by the second elastic support body.

[0005] In some embodiments, the first elastic support body includes a first support block and a first elastic wall, the first elastic wall surrounds the first support block and connects the first support block to the base, the first support block is used to support the key cap, and the first elastic wall is used to provide a rebound force; the second elastic support body includes a second support block and a second elastic wall, the second elastic wall surrounds the second support block and connects the second support block to the base, the second support block is used to support the key cap, and the second elastic wall is used to provide a rebound force; the thickness of the first elastic wall is less than the thickness of the second elastic wall; and / or, the material of the first elastic wall and the second elastic wall are both silicone, and the hardness of the silicone used to form the first elastic wall is less than the hardness of the silicone used to form the second elastic wall.

[0006] In some embodiments, the first elastic support body includes a first support block and a first elastic wall, the first elastic wall surrounds the first support block and connects the first support block to the base, the first support block is used to support the key cap, and the first elastic wall is used to provide a rebound force; the second elastic support body includes a second support block and a second elastic wall, the second elastic wall surrounds the second support block and connects the second support block to the base, the second support block is used to support the key cap, and the second elastic wall is used to provide a rebound force; on a reference section passing through the central axis of the first elastic wall, on one side of the central axis of the first elastic wall, a first reference line passing through both ends of the inner contour line of the first elastic wall forms a first angle with the main surface of the key panel; on a reference section passing through the central axis of the second elastic wall, on one side of the central axis of the second elastic wall, a second reference line passing through both ends of the inner contour line of the second elastic wall forms a second angle with the main surface of the key panel; the first angle is smaller than the second angle.

[0007] In some embodiments, when the keycap is not subjected to external pressing force, the first elastic wall is arranged in a flat plate shape parallel to the main surface of the key plate, and the second elastic wall is arranged in a cylindrical shape that tapers from the base to the second support block.

[0008] In some embodiments, the second elastic wall is arranged in an arc shape on a reference cross section passing through the central axis of the second elastic wall.

[0009] In some embodiments, the elastic member abuts against the key plate via the base, and abuts against the key cap via the first elastic support body and the second elastic support body; a first opening and at least one second opening are provided on the base, the first elastic support body covers the first opening, and protrudes toward the side close to the key cap to form a first deformation cavity on the side away from the key cap, the second elastic support body covers the corresponding second opening, and protrudes toward the side close to the key cap to form a second deformation cavity on the side away from the key cap; a connecting port is provided on the base between the first opening and the second opening, and the connecting port is used to connect the first deformation cavity and the second deformation cavity.

[0010] In some embodiments, when the keycap is not subjected to external pressing force, the first deformation cavity and the second deformation cavity are communicated with each other.

[0011] In some embodiments, when the keycap is not subjected to external pressing force, the keycap forms a pre-compression on the first elastic support body, and the pre-compression degree of the second elastic support body is smaller than the pre-compression degree of the first elastic support body.

[0012] In some embodiments, the key assembly also includes a third direction, the third direction is perpendicular to the first direction and the second direction, and the size of the key assembly along the second direction is larger than the size of the key assembly along the third direction; in the second direction, the first elastic support body is closer to the middle of the key assembly than the second elastic support body.

[0013] In some embodiments, the number of the second elastic supporting bodies is two, the two second elastic supporting bodies are spaced apart along the second direction, and the first elastic supporting body is disposed between the two second elastic supporting bodies.

[0014] In some embodiments, in the second direction, a ratio of a length of a longest line between two second elastic supporting bodies to a length of the keycap is between 0.6 and 1.

[0015] On the other hand, the present application provides an electronic device, including a housing and a first button assembly, wherein the first button assembly is the button assembly described in any of the above embodiments, and a mounting groove is provided on the housing, and the first button assembly is disposed in the mounting groove.

[0016] In some embodiments, the electronic device also includes a circuit board; the shell is surrounded to form an installation space, the circuit board is arranged in the installation space, the installation groove is a blind groove arranged on the side wall of the shell, and the switch element is electrically connected to the circuit board through a wire hole arranged at the bottom of the blind groove.

[0017] In some embodiments, the electronic device also includes a key cover, which is arranged at the open end of the mounting slot, and a third opening is provided on the key cover; the key cap includes a pressing body and a limiting portion, the pressing body includes a first surface and a second surface arranged opposite to each other, the first surface is supported by the elastic member, and the second surface is exposed through the third opening, the limiting portion is provided on the outer periphery of the pressing body and extends outward, when the key cap is not subjected to external pressing force, the key cover presses the limiting portion in a direction toward the key panel, and the elastic member supports the pressing body in a direction away from the key panel.

[0018] In some embodiments, the electronic device further includes a second button assembly disposed in the mounting slot, a fourth opening is further disposed on the button cover, at least a portion of the second button assembly is exposed through the fourth opening, and the second button assembly and the first button assembly share an elastic member.

[0019] In the solution of the present application, the elastic member includes a first elastic support body and a second elastic support body that are spaced apart. The switch element on the keypad is arranged corresponding to the first elastic support body. When a downward pressing force is applied at a position corresponding to the first elastic support body, the switch element is easily triggered. Furthermore, since the second elastic support body is spaced apart from the first elastic support body and is an independent module, even if a downward pressing force is applied at a position corresponding to the second elastic support body, the second elastic support body can move downward as a whole after being pressed, so that the pressing force applied to the keycap can effectively act on the first elastic support body, prompting the first elastic support body to move downward, thereby easily triggering the switch element. Therefore, the solution of the present application has low requirements for the pressing position. When the second elastic support body is arranged corresponding to the edge position of the keycap, the switch element can be smoothly triggered even if the edge position is pressed, which is conducive to improving the key triggering rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which: Figure 1 This is a structural diagram of an embodiment of an electronic device of the present application; Figure 2 yes Figure 1 Exploded diagram of the electronic equipment; Figure 3 yes Figure 1 A schematic cross-sectional view of the first button assembly along AA; Figure 4 Shown Figure 1 An exploded diagram of the first button assembly; Figure 5 This is a structural diagram of another embodiment of the elastic member of the present application; Figure 6 Shown Figure 1 Partial structure of the first button assembly; Figure 7 Shows part of the structure of the key assembly in the related solution; Figure 8 It is a schematic diagram of the compression load curve; Figure 9 yes Figure 2 A schematic cross-sectional view of the elastic member; Figure 10 It is a cross-sectional schematic diagram of another embodiment of the elastic member of the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] like Figures 1 to 2 As shown, Figure 1 This is a schematic structural diagram of an embodiment of the electronic device 1 of the present application. Figure 2 yes Figure 1The present application provides an electronic device 1 , which includes a housing 10 and a first key assembly 20 . The housing 10 is provided with a mounting groove 121 , and the first key assembly 20 is disposed in the mounting groove 121 .

[0023] For example, the electronic device 1 may be a walkie-talkie. The housing 10 may include a bottom wall 11 and a side wall 12 disposed around the bottom wall 11. The bottom wall 11 and the side wall 12 are together arranged to form an installation space 13. Figure 2 As shown, the electronic device 1 may further include other components such as a circuit board 40 arranged in the installation space 13 .

[0024] In some embodiments, such as Figure 2 As shown, the mounting groove 121 is a blind groove provided on the side wall 12 of the housing 10, and the first button assembly 20 is provided in the mounting groove 121. The mounting groove 121 is a blind groove, so that the mounting groove 121 is separated from the mounting space 13 in the housing 10, which can prevent moisture from entering the mounting space 13 through the mounting groove 121 and causing adverse effects on electronic components such as the circuit board 40 provided in the mounting space 13.

[0025] In some embodiments, such as Figure 2 As shown, the electronic device 1 may further include a key cover 30 , which is used to press and fix the first key assembly 20 in the installation groove 121 .

[0026] Next, the structure of the first button assembly 20 will be described in detail.

[0027] like Figure 3 As shown, Figure 3 yes Figure 1 The schematic cross-sectional view of the first key assembly 20 along AA in FIG. The first key assembly 20 has a first direction Z and a second direction X that are perpendicular to each other, and includes a key sheet 21, an elastic member 22, and a key cap 23 stacked in sequence along the first direction Z. The key sheet 21 is provided with a switch element 211. The elastic member 22 includes a base 221, a first elastic support 222, and at least one second elastic support 223. The first elastic support 222 and the second elastic support 223 are disposed on one side of the base 221 near the key cap 23. The first elastic support 222 and the second elastic support 223 are spaced apart along the second direction X, respectively supporting the key cap 23 and providing a resilient force for the key cap 23. The projection of the first elastic support 222 along the first direction Z falls on the switch element 211. The first elastic support 222 is configured to move downward in the first direction Z when the key cap 23 is subjected to external pressure, thereby triggering the switch element 211. Throughout this application, the term "resilient force" refers to the resilient force provided to the key cap in the first direction Z.

[0028] like Figure 1 and Figure 3 As shown, the first key assembly 20 also includes a third direction Y, which is perpendicular to the first direction Z and the second direction X. The dimension of the first key assembly 20 along the second direction X is greater than the dimension of the first key assembly 20 along the third direction Y. In other words, the first key assembly 20 is an elongated strip as a whole, wherein the second direction X can be understood as the length direction and the third direction Y can be understood as the width direction. The first direction Z can be understood as the thickness direction. In some embodiments, in the second direction X, the first elastic support body 222 can be closer to the middle of the first key assembly 20 than the second elastic support body 223.

[0029] The keycap 23 can be made of plastic to absorb external pressure. The elastic member 22 can be made of silicone and can be integrally formed to support and provide resilience to the keycap 23. The switch element 211 on the keypad 21 can be electrically connected to the circuit board 40 within the mounting space 13.

[0030] like Figure 4 As shown, Figure 4 Shown Figure 1 In the exploded schematic diagram of the first button assembly 20, the number of the second elastic support bodies 223 can be two, the number of the first elastic support body 222 can be one, the two second elastic support bodies 223 are arranged at intervals along the second direction X, and the first elastic support body 222 is arranged between the two second elastic support bodies 223.

[0031] like Figure 3 As shown, in the second direction X, the ratio of the length L1 of the longest line connecting the two second elastic supports 223 to the length L2 of the keycap 23 can be between 0.6 and 1, so as to provide sufficient support for the keycap 23 and reduce the possibility of the keycap 23 shaking. For example, the ratio of the length L1 of the longest line connecting the two second elastic supports 223 to the length L2 of the keycap 23 can be 0.6, 0.7, 0.85, 0.9, or 0.95, etc. This application does not impose any restrictions on this, and those skilled in the art can choose according to actual needs. In the description of this application, "between A and B" includes endpoints A and B.

[0032] like Figure 5 As shown, Figure 52 is a schematic structural diagram of another embodiment of the elastic member 22 of the present application. In some embodiments, the first button assembly 20 can also be arranged in a circular shape as a whole. The number of the first elastic support body 222 can be one, which is arranged at the center of the first button assembly 20, and a plurality of second elastic support bodies 223 are arranged around the first elastic support body 222. For example, the number of the second elastic support bodies 223 can be four, and the four second elastic support bodies 223 are arranged around the first elastic support body 222. Of course, the specific number of the second elastic support bodies 223 is not specifically limited in this application, and those skilled in the art can select according to actual needs.

[0033] The following will be combined Figure 6 and Figure 7 , Figure 6 Shown Figure 1 Partial structure of the first button assembly 20, Figure 7 The following figure shows the partial structure of the key assembly in the related scheme, and describes the technical effect of the present application in detail. Figure 6 and Figure 7 The button components shown are all long strips. This application does not limit the shape of the first button component 20. It can be circular, positive, regular or irregular hexagonal. This application does not limit this. Technical personnel in this field can choose according to actual needs.

[0034] Figure 7 In the illustrated key assembly, only one elastic support 222' is provided on the elastic member 22. This elastic support 222' is elongated and provides sufficient support for the keycap 23 to prevent it from shaking. The switch element 211 is positioned relative to the middle portion of the elastic support 222' (the middle portion described here refers to the middle position in the longitudinal direction). When a downward pressure F1 is applied to the uppermost end of the keycap 23, the uppermost end B of the elastic support 222' deforms and moves downward, causing the middle portion of the elastic support 222' to move downward a distance S1.

[0035] Figure 6 In the illustrated first key assembly 20, the elastic member 22 is provided with a first elastic support 222 and two second elastic supports 223. The two second elastic supports 223 are spaced apart along the second direction X, with the first elastic support 222 positioned between the two second elastic supports 223 to provide sufficient support for the keycap 23 and prevent it from shaking. The switch element 211 is positioned corresponding to the middle first elastic support 222. When an equal pressing force F1 is applied to the topmost end of the keycap 23, the topmost second elastic support 223 deforms and moves downward, causing the middle first elastic support 222 to move downward a distance S2.

[0036] When an equal pressing force F1 is applied to the uppermost end of the key cap 23, Figure 6 The downward movement distance S2 of the first key assembly 20 shown is greater than Figure 7 Therefore, when an equal pressing force F1 is applied to the edge position of the key cap 23, Figure 6 The first key assembly 20 shown is compared to Figure 7 The button assembly shown is easier to trigger. The reason is that Figure 6 In the first button assembly 20 shown, the second elastic support body 223 is spaced apart from the first elastic support body 222 and is an independent module. When a pressing force F1 is applied to the uppermost end of the button cap 23, the uppermost second elastic support body 223 can move downward as a whole after being pressed. In this way, the pressing force applied to the button cap 23 can more easily act on the first elastic support body 222 in the middle, causing the first elastic support body 222 to move downward more, thereby making it easier to trigger the switch element 211.

[0037] In the solution of the present application, the elastic member 22 includes a first elastic support body 222 and a second elastic support body 223 arranged at intervals. The switch element 211 on the keypad 21 is arranged corresponding to the first elastic support body 222. When a downward pressing force is applied at a position corresponding to the first elastic support body 222, the switch element 211 is easily triggered. Furthermore, because the second elastic support body 223 is spaced apart from the first elastic support body 222 and is an independent module, even if a downward pressing force is applied at a position corresponding to the second elastic support body 223, the second elastic support body 223 can move downward as a whole after being pressed, so that the pressing force applied to the keycap 23 can effectively act on the first elastic support body 222, prompting the first elastic support body 222 to move downward, thereby easily triggering the switch element 211. Therefore, the solution of the present application has a low requirement for the pressing position. When the second elastic support body is arranged corresponding to the edge position of the keycap, even if the edge position is pressed, the switch element 211 can be smoothly triggered, which is conducive to improving the key triggering rate.

[0038] In some embodiments, the switch element 211 can provide a segmented feel for the first button assembly 20. When the first elastic support body 222 and the second elastic support body 223 have the same downward travel along the first direction Z, the rebound force provided by the first elastic support body 222 is smaller than the rebound force provided by the second elastic support body 223.

[0039] For example, the switch element 211 may be a pot, but this is not a limitation of the present application, and those skilled in the art may make their own selections based on actual needs. The paragraph feel is closely related to the feel value (i.e., click value) obtained based on the press-load curve. The click value is equal to the ratio of the difference between the peak and valley values ​​in the press-load curve to the peak value. The larger the click value, the better the paragraph feel when the user presses the key component.

[0040] like Figure 8 As shown, Figure 8 It is a schematic diagram of the pressing load curve. When a downward pressing force is applied to the middle of the key cap 23, the key assembly will show the following Figure 8 The compression load curve is shown in Figure 2. Figure 8 As shown by the curve Q1 in FIG, when the first elastic support body 222 provides a relatively small rebound force, the difference between the peak value and the valley value is relatively large, and the click value is relatively large, so that the middle part of the first key assembly 20 has a better segment feel, that is, the segment feel provided by the switch element 211 can be transmitted to the outside to the pressing experience. Figure 8 As shown by the curve Q2 in FIG, when the rebound force provided by the first elastic support body 222 increases, the difference between the peak value and the valley value decreases, the click value is relatively small, and the paragraph feel becomes worse.

[0041] In the present application, the rebound force provided by the first elastic support body 222 is smaller than the rebound force provided by the second elastic support body 223, so that the first elastic support body 222 has a relatively small rebound force, so that the paragraph feel provided by the switch element 211 can be transmitted outward to the pressing experience, which is beneficial to improving the paragraph feel of the middle part of the first button assembly 20. On the other hand, the second elastic support body 223 has a relatively large rebound force, thereby ensuring that the first button assembly 20 as a whole can generate sufficient rebound force, ensuring the elastic feel of the first button assembly 20.

[0042] like Figure 9 As shown, Figure 9 yes Figure 3 A cross-sectional diagram of the elastic member 22. In some embodiments, the first elastic support 222 includes a first support block 2221 and a first elastic wall 2222. The first elastic wall 2222 surrounds the first support block 2221 and connects the first support block 2221 to the base 221. The first support block 2221 is used to support the keycap 23, and the first elastic wall 2222 is used to provide a rebound force. The second elastic support 223 includes a second support block 2231 and a second elastic wall 2232. The second elastic wall 2232 surrounds the second support block 2231 and connects the second support block 2231 to the base 221. The second support block 2231 is used to support the keycap 23, and the second elastic wall 2232 is used to provide a rebound force.

[0043] The resilience provided by the first and second elastic walls 2222 and 2232 is affected by various factors, including thickness, material, and shape. For example, given a given material and shape, the thicker the elastic wall, the greater the resilience provided. For another example, given a given thickness and shape, the harder the silicone used to form the elastic wall, the greater the resilience provided. For another example, given a given material and thickness, the shape of the elastic wall becomes the primary factor influencing the resilience.

[0044] In some embodiments, the first elastic wall 2222 and the second elastic wall 2232 are formed of the same material, silicone, and have substantially the same shape. For example, the elastic member 22 is integrally formed from the same material, silicone. In this case, the base 221, the first elastic support body 222, and the second elastic support body 223 are formed from the same material, silicone. The thickness of the first elastic wall 2222 can be less than the thickness of the second elastic wall 2232, so that the rebound force provided by the first elastic support body 222 is less than the rebound force provided by the second elastic support body 223.

[0045] In some embodiments, the thickness of the first elastic wall 2222 is the same as the thickness of the second elastic wall 2232, and the shapes of the first elastic wall 2222 and the second elastic wall 2232 are substantially the same. For example, the first elastic support body 222 and the second elastic support body 223 can be formed of silicone of different materials, such that the first elastic wall 2222 and the second elastic wall 2232 are made of different materials. The hardness of the silicone used to form the first elastic wall 2222 can be less than the hardness of the silicone used to form the second elastic wall 2232, so that the rebound force provided by the first elastic support body 222 is less than the rebound force provided by the second elastic support body 223.

[0046] In some embodiments, the first elastic wall 2222 and the second elastic wall 2232 have substantially the same shape. The thickness of the first elastic wall 2222 can be smaller than the thickness of the second elastic wall 2232, and the hardness of the silicone used to form the first elastic wall 2222 can be smaller than the hardness of the silicone used to form the second elastic wall 2232, so that the resilience provided by the first elastic support body 222 is smaller than the resilience provided by the second elastic support body 223.

[0047] In some embodiments, the thickness of the first elastic wall 2222 is the same as the thickness of the second elastic wall 2232, and the first elastic wall 2222 and the second elastic wall 2232 are formed of the same material, silicone, and have the same hardness. The shape of the first elastic wall 2222 and the shape of the second elastic wall 2232 can be different so that the rebound force provided by the first elastic support body 222 is smaller than the rebound force provided by the second elastic support body 223.

[0048] like Figure 9 and Figure 10As shown, on the reference section passing through the central axis C1 of the first elastic wall 2222, on one side of the central axis C1 of the first elastic wall 2222, the first reference line N1 passing through the two ends of the inner contour line of the first elastic wall 2222 forms a first angle with the main surface N0 of the key plate 21; on the reference section passing through the central axis C2 of the second elastic wall 2232, on one side of the central axis C2 of the second elastic wall 2232, the second reference line N2 passing through the two ends of the inner contour line of the second elastic wall 2232 forms a second angle with the main surface N0 of the key plate 21; by setting the first angle to be smaller than the second angle, the rebound force provided by the first elastic support body 222 is smaller than the rebound force provided by the second elastic support body 223.

[0049] It should be noted that when the first reference line N1 is perpendicular to the main surface N0 of the key sheet 21, the first angle is 90°; when the first reference line N1 is parallel to the main surface N0 of the key sheet 21, the first angle is 0°; when the first reference line N1 intersects with the main surface N0 of the key sheet 21 and is not perpendicular, the first angle is the acute angle formed by the first reference line N1 and the main surface N0 of the key sheet 21. Similarly, when the second reference line N2 is perpendicular to the main surface N0 of the key sheet 21, the second angle is 90°; when the second reference line N2 is parallel to the main surface N0 of the key sheet 21, the second angle is 0°; when the second reference line N2 intersects with the main surface N0 of the key sheet 21 and is not perpendicular, the second angle is the acute angle formed by the second reference line N2 and the main surface N0 of the key sheet 21.

[0050] like Figure 9 and Figure 10 As shown, when the key cap 23 is not subjected to external pressing force, the first elastic wall 2222 is arranged in a flat plate shape parallel to the main surface N0 of the key plate 21, and the second elastic wall 2232 is arranged in a cylindrical shape that gradually shrinks in the direction from the base 221 to the second support block 2231. At this time, the first angle is 0°, and the second angle is Figure 9 and Figure 10 By setting the first included angle to be smaller than the second included angle, the resilience provided by the first elastic support body 222 is smaller than the resilience provided by the second elastic support body 223.

[0051] For example, the second elastic wall 2232 can be configured in the shape of a tapered cylinder, or in the shape of an irregular cylinder. When the second elastic wall 2232 is configured in the shape of an irregular cylinder, the central axis C2 of the second elastic wall 2232 can be the central axis of a reference cylinder that can be precisely inserted into the cylindrical structure and cannot be easily removed from the cylindrical structure. The central axis C1 of the first elastic wall 2222 can be defined in the same or similar manner as the central axis C2 of the second elastic wall 2232, which is within the scope of easy understanding for those skilled in the art and will not be further described here.

[0052] like Figure 9 As shown, on the reference cross section passing through the central axis C2 of the second elastic wall 2232, the second elastic wall 2232 may be arranged in an arc shape. Figure 10 As shown, on the reference section passing through the central axis C2 of the second elastic wall 2232, the second elastic wall 2232 can also be a straight wall set at an angle.

[0053] Compared to Figure 10 The second elastic wall 2232 shown in FIG. Figure 9 The arc-shaped second elastic wall 2232 has the following advantages: on the one hand, it can provide a greater rebound force in the first direction Z. On the other hand, when the edge of the second elastic wall 2232 is compressed and deformed, the deformation is more easily transmitted along the circumference of the second elastic wall 2232, allowing the second elastic support body 223 to move downward as a whole, which helps to reduce the possibility of the second elastic support body 223 tilting to one side. When the second elastic support body 223 tilts to one side, it causes the other side to tilt upward, dispersing the pressing force applied to the first elastic support body 222 and hindering the downward movement of the first elastic support body 222.

[0054] In some embodiments, the first elastic wall 2222 is arranged in a flat plate shape parallel to the main surface N0 of the keypad 21, in which case the first angle is 0°. On a reference cross section passing through the central axis C2 of the second elastic wall 2232, the second elastic wall 2232 may be a straight wall arranged along the first direction Z, in which case the second angle is 90°. This application does not impose any specific restrictions on the specific shapes of the first elastic wall 2222 and the second elastic wall 2232, as long as the rebound force provided by the first elastic wall 2222 is less than the rebound force provided by the second elastic wall 2232.

[0055] Please continue reading Figure 9The elastic member 22 abuts against the key plate 21 via the base 221, and abuts against the key cap 23 via the first elastic support body 222 and the second elastic support body 223; a first opening 2211 and at least one second opening 2212 are provided on the base 221, the first elastic support body 222 covers the first opening 2211, and protrudes toward the side close to the key cap 23 to form a first deformation cavity 2223 on the side away from the key cap 23, the second elastic support body 223 covers the corresponding second opening 2212, and protrudes toward the side close to the key cap 23 to form a second deformation cavity 2233 on the side away from the key cap 23; a connecting port 2213 is provided on the base 221 between the first opening 2211 and the second opening 2212, and the connecting port 2213 is used to connect the first deformation cavity 2223 and the second deformation cavity 2233. The first deformation cavity 2223 is formed by the first elastic support body 222 , the base body 221 , and the key plate 21 ; the second deformation cavity 2233 is formed by the second elastic support body 223 , the base body 221 , and the key plate 21 .

[0056] The present application sets the first deformation cavity 2223 and the second deformation cavity 2233 to be connected to each other, so that the first elastic support body 222 and the second elastic support body 223 can rebound quickly after being deformed under pressure, which is beneficial to improving the elastic feel of the first button assembly 20.

[0057] Please continue reading Figure 3 When the key cap 23 is not subjected to external pressure, the key cap 23 forms a pre-compression on the first elastic support body 222, and the pre-compression degree of the second elastic support body 223 is less than the pre-compression degree of the first elastic support body 222. For example, when the key cap 23 is not subjected to external pressure, the second elastic support body 223 can just contact the key cap 23 without pre-compression. In the present application, by providing the key cap 23 with a pre-compression on the first elastic support body 222, the possibility of the key cap 23 shaking in the first direction Z is reduced.

[0058] Please continue to refer to 2. In some embodiments, the mounting groove 121 is a blind groove provided on the side wall 12 of the housing 10. The switch element 211 is electrically connected to the circuit board 40 via the wire hole 122 provided at the bottom of the blind groove. Figure 2 and Figure 4 The switch element 211 can be electrically connected to the circuit board 40 disposed in the installation space 13 via the flexible circuit board 212 passing through the wire hole 122.

[0059] Please also refer to Figure 2 and Figure 3In some embodiments, the electronic device 1 further includes a key cover 30, which is disposed over the open end of the mounting slot 121. A third opening 31 is provided on the key cover 30. The key cap 23 includes a pressing body 231 and a limiting portion 232. The pressing body 231 and the limiting portion 232 may be integrally formed. The pressing body 231 includes a first surface 2311 and a second surface 2312 that are oppositely disposed. The first surface 2311 is supported by the elastic member 22, and the second surface 2312 is exposed through the third opening 31 to receive external pressing force. The limiting portion 232 is disposed on the outer periphery of the pressing body 231 and extends outward. When the key cap 23 is not subjected to external pressing force, the key cover 30 presses the limiting portion 232 toward the key plate 21, and the elastic member 22 supports the pressing body 231 away from the key plate 21, thereby preventing the key cap 23 from shaking in the first direction Z.

[0060] In some embodiments, such as Figure 1 As shown, the electronic device 1 further includes a second button assembly 50 disposed within the mounting slot 121. The button cover 30 is further provided with a fourth opening 32, through which at least a portion of the second button assembly 50 is exposed. The second button assembly 50 and the first button assembly 20 share the elastic member 22. It will be readily understood that in some embodiments, the electronic device 1 may include only the first button assembly 20; or, in some embodiments, the electronic device 1 may further include a third button assembly in addition to the first and second button assemblies 20 and 50. This application does not impose any restrictions on this, and those skilled in the art may make their own choices based on actual needs.

[0061] For example, the second button assembly 50 and the first button assembly 20 may be spaced apart along the second direction X. The second button assembly 50 may have the same or similar structure as the first button assembly 20. For example, the second button assembly 50 may also include a button plate, an elastic member, and a button cap stacked in sequence along the first direction Z. In some embodiments, the second button assembly 50 may not include the button cap 23.

[0062] The second button assembly 50 and the first button assembly 20 share the elastic member 22 , that is, the elastic member of the second button assembly 50 can be integrally formed with the elastic member 22 of the first button assembly 20 to improve the waterproof performance of the electronic device 1 .

[0063] Furthermore, the periphery of the integrally formed elastic member 22 may also be interference-fitted with the inner wall of the mounting groove 121 to improve the waterproof performance of the electronic device 1 .

[0064] In the above description of this specification, unless otherwise expressly specified or limited, terms such as "fixed," "mounted," "connected," or "connected" should be understood broadly. For example, the term "connected" can refer to a fixed connection, a removable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal connection between two elements or the interaction between two elements. Therefore, unless otherwise expressly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this application based on the specific circumstances.

[0065] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of this application and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of this application. In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinal numbers are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, "plurality" means at least two, such as two, three or more, etc., unless otherwise clearly specified.

[0066] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A key assembly, characterized in that: The key assembly has a first direction and a second direction perpendicular to each other, and comprises a key plate, an elastic member and a key cap stacked in sequence along the first direction; In which, a switch element is provided on the key panel, and the elastic member includes a base, a first elastic support body and at least one second elastic support body, the first elastic support body and the second elastic support body are arranged on the side of the base close to the key cap, the first elastic support body and the second elastic support body are arranged at intervals along the second direction, for supporting the key cap respectively and providing rebound force for the key cap at the same time, the projection of the first elastic support body along the first direction falls on the switch element, and the first elastic support body is arranged to move downward along the first direction when the key cap is subjected to external pressing force and trigger the switch element.

2. The key assembly according to claim 1, wherein: The switch element can provide a paragraph feel for the key assembly; When the downward movement strokes of the first elastic supporting body and the second elastic supporting body along the first direction are the same, the rebound force provided by the first elastic supporting body is smaller than the rebound force provided by the second elastic supporting body.

3. The key assembly according to claim 2, characterized in that: The first elastic support body includes a first support block and a first elastic wall, the first elastic wall surrounds the first support block and connects the first support block to the base, the first support block is used to support the key cap, and the first elastic wall is used to provide the rebound force; The second elastic support body includes a second support block and a second elastic wall, the second elastic wall surrounds the second support block and connects the second support block to the base, the second support block is used to support the key cap, and the second elastic wall is used to provide the rebound force; The thickness of the first elastic wall is smaller than the thickness of the second elastic wall; and / or, the material of the first elastic wall and the second elastic wall are both silicone, and the hardness of the silicone used to form the first elastic wall is smaller than the hardness of the silicone used to form the second elastic wall.

4. The key assembly according to claim 2, wherein: The first elastic support body includes a first support block and a first elastic wall, the first elastic wall surrounds the first support block and connects the first support block to the base, the first support block is used to support the key cap, and the first elastic wall is used to provide the rebound force; The second elastic support body includes a second support block and a second elastic wall, the second elastic wall surrounds the second support block and connects the second support block to the base, the second support block is used to support the key cap, and the second elastic wall is used to provide the rebound force; On a reference section passing through the central axis of the first elastic wall, on one side of the central axis of the first elastic wall, a first reference line passing through the two ends of the inner contour line of the first elastic wall forms a first angle with the main surface of the key panel; on a reference section passing through the central axis of the second elastic wall, on one side of the central axis of the second elastic wall, a second reference line passing through the two ends of the inner contour line of the second elastic wall forms a second angle with the main surface of the key panel; the first angle is smaller than the second angle.

5. The key assembly according to claim 4, characterized in that: When the keycap is not subjected to external pressing force, the first elastic wall is arranged in a flat plate shape parallel to the main surface of the key plate, and the second elastic wall is arranged in a gradually shrinking cylindrical shape in the direction from the base to the second supporting block.

6. The key assembly according to claim 5, characterized in that: On a reference cross section passing through the central axis of the second elastic wall, the second elastic wall is arranged in an arc shape.

7. The key assembly according to claim 1, characterized in that: The elastic member abuts against the key plate via the base, and abuts against the key cap via the first elastic supporting body and the second elastic supporting body; The base is provided with a first opening and at least one second opening, the first elastic support body covers the first opening and protrudes toward the side close to the keycap to form a first deformation cavity on the side away from the keycap, and the second elastic support body covers the corresponding second opening and protrudes toward the side close to the keycap to form a second deformation cavity on the side away from the keycap; A communication port is provided on the base body between the first opening and the second opening, and the communication port is used to connect the first deformation cavity and the second deformation cavity.

8. The key assembly according to claim 1, wherein: When the keycap is not subjected to external pressing force, the keycap forms a pre-compression on the first elastic support body, and the pre-compression degree of the second elastic support body is smaller than the pre-compression degree of the first elastic support body.

9. The key assembly according to claim 1, wherein: The key assembly further includes a third direction, the third direction being perpendicular to the first direction and the second direction, and the dimension of the key assembly along the second direction is greater than the dimension of the key assembly along the third direction; In the second direction, the first elastic supporting body is closer to the middle of the key assembly than the second elastic supporting body.

10. The key assembly according to claim 9, characterized in that: The number of the second elastic supporting bodies is two, the two second elastic supporting bodies are arranged at intervals along the second direction, and the first elastic supporting body is arranged between the two second elastic supporting bodies.

11. The key assembly according to claim 10, characterized in that: In the second direction, the ratio of the length of the longest line between two second elastic supporting bodies to the length of the key cap is between 0.6 and 1.

12. An electronic device, characterized in that: It comprises a shell and a first button assembly, wherein the first button assembly is the button assembly according to any one of claims 1 to 11, and a mounting groove is provided on the shell, and the first button assembly is arranged in the mounting groove.

13. The electronic device according to claim 12, wherein: The electronic device further comprises a circuit board; The shell is surrounded to form an installation space, the circuit board is arranged in the installation space, the installation groove is a blind groove arranged on the side wall of the shell, and the switch element is electrically connected to the circuit board through a wire hole arranged at the bottom of the blind groove.

14. The electronic device according to claim 13, wherein: The electronic device further comprises a key cover, the key cover being arranged on the open end of the mounting slot, and the key cover being provided with a third opening; The key cap includes a pressing body and a limiting portion, the pressing body includes a first surface and a second surface arranged opposite to each other, the first surface is supported by the elastic member, and the second surface is exposed through the third opening, the limiting portion is arranged on the outer periphery of the pressing body and extends outward, when the key cap is not subjected to external pressing force, the key cap presses the limiting portion in a direction toward the key plate, and the elastic member supports the pressing body in a direction away from the key plate.

15. The electronic device according to claim 14, characterized in that The electronic device further includes a second button assembly disposed in the mounting slot. A fourth opening is further disposed on the button cover. At least a portion of the second button assembly is exposed through the fourth opening. The second button assembly and the first button assembly share the elastic member.

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