Key assembly, electronic equipment and key assembly processing method

Abstract

The invention provides a key assembly, electronic equipment and a key assembly processing method. The key assembly is applied to the electronic equipment. The key assembly comprises a key, a conductive base, a switch module and a limiting piece. The switch module is located on one side of the key, and the conductive base is fixed to the side, close to the switch module, of the key. The conductive base comprises a conductive base main body and supporting legs which are arranged on the conductive base main body and extend towards the switch module. The switch module comprises a circuit board and a switch, the supporting feet elastically abut against the circuit board, and the key is fixedly connected with a shell of the electronic equipment through the limiting piece. The supporting feet elastically abut against the circuit board, the supporting feet deform to provide supporting force for the key assembly, the limiting pieces provide abutting force for the key assembly, and under the combined action of the limiting pieces and the supporting feet, shaking of the key is restrained, and the stability of the key assembly is improved. Meanwhile, as the supporting legs are formed by extending from the conductive base main body, only the relevant size of the conductive base needs to be changed for different keys, the universality is high, and the cost is low.

Description

Technical Field

[0001] The present invention relates to the field of electronic technology, and in particular to a key assembly, an electronic device and a key assembly processing method. Background Art

[0002] The key assembly is a highly used structural component in electronic devices. The stability, shaking feeling when touching, and looseness of the key assembly greatly affect the product refinement of the electronic device, and ultimately affect the quality and image of the product. At present, the key assembly mainly achieves the effect of preventing shaking by opening a fixed structure on the shell or adding foam. Limited by the difficulty of processing and assembly efficiency, the stability of traditional key assemblies is poor.

[0003] Therefore, it is necessary to provide an improved key assembly, electronic device and key assembly processing method to solve the above problems. Summary of the invention

[0004] The present disclosure provides a key assembly, an electronic device and a key assembly processing method to solve related technical problems.

[0005] A first aspect of the present disclosure provides a key assembly, which is applied to an electronic device; the key assembly comprises a key, a conductive base, a switch module and a limiter, the switch module is located on one side of the key, and the conductive base is fixed to a side of the key close to the switch module;

[0006] The conductive base includes a conductive base body and a leg disposed on the conductive base body and extending toward the switch module, and the switch module includes a circuit board and a switch;

[0007] The support leg is elastically abutted against the circuit board, and the button is fixedly connected to the housing of the electronic device through the limiting member.

[0008] Furthermore, the conductive base includes at least two legs; a pair of legs is arranged on both sides of the conductive base body.

[0009] Furthermore, the pair of legs are arranged in an eight-shaped shape, with their openings facing the circuit board, and the switch is located between the pair of legs.

[0010] Furthermore, the conductive base further comprises an installation space, wherein the installation space is located between the conductive base body and the support leg, and the switch is arranged in the installation space.

[0011] Furthermore, the support leg includes a first edge and a second edge connecting the conductive base body, the first edge is located outside the installation space, the second edge is located at the edge of the installation space, and the distance between the second edge and the circuit board is greater than the distance between the first edge and the circuit board.

[0012] Furthermore, the support leg includes a first surface, a second surface, and an arc surface connecting the first surface and the second surface, and the arc surface abuts against the circuit board.

[0013] Furthermore, the first surface is arranged to be inclined relative to the second surface.

[0014] Furthermore, the support leg extends from one side of the conductive base body to the other side of the conductive base body.

[0015] Furthermore, the button includes a button body and a pair of grips extending to two ends, and the limiter includes a limiter body and a pair of spring sheets arranged at two ends of the limiter body, and the spring sheets abut against the grips and the shell.

[0016] Furthermore, each of the elastic sheets includes a first section and a second section that are arranged opposite to each other and a deformation section connecting the first section and the second section, the first section abuts against the clamping hand and one side of the shell, and the second section abuts against the other side of the shell.

[0017] Furthermore, the key comprises a key body and a key cap, the key cap and the conductive base are respectively located on two sides of the key body, and a side of the key body close to the key cap has reinforcing pieces extending to both ends.

[0018] A second aspect of the present disclosure provides an electronic device, comprising: a housing and the above-mentioned key assembly, wherein the key assembly is assembled to the housing.

[0019] Furthermore, a button mounting hole and a button positioning groove are provided on the housing, the button mounting hole is connected to the button positioning groove, and the opening directions are perpendicular to each other;

[0020] The button can pass through the button installation hole, and the limiting member can pass through the opening of the button positioning groove to fix the button in the button positioning groove.

[0021] A third aspect of the present disclosure provides a method for processing a key assembly, wherein the key assembly comprises a key, a conductive base and a switch module, wherein the conductive base comprises a conductive base body and a support leg disposed on the conductive base body and extending toward the switch module;

[0022] The support leg comprises a first surface and a second surface, wherein the first surface and the second surface form a first angle;

[0023] The cross section of the connection between the conductive base body and the support leg is rectangular, and the cross section includes a first side connected to the first surface;

[0024] The method comprises: determining the cross-sectional area of ​​the connection between the conductive base body and the support leg;

[0025] Measure the length of the first side;

[0026] The angle of the first angle is determined according to the length of the first side.

[0027] The key assembly disclosed in the present invention is provided with a support foot on the conductive base and elastically abuts the support foot against the circuit board, so that the support foot is deformed and the key assembly is subjected to the support force and the friction force between the conductive base and the circuit board. Under the joint action of the limiter and the support foot, the state of free shaking of the key can be suppressed, the shaking feeling of the key is improved, and the key assembly has better stability. At the same time, since the support foot is extended from the conductive base body, for different keys, only the relevant dimensions of the conductive base need to be changed, and the structure is relatively fixed, with high universality and low cost.

[0028] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0030] Figure 1 is a structural exploded view of an electronic device in an exemplary embodiment of the present disclosure;

[0031] Figure 2 is a partial structural diagram of a key assembly in an exemplary embodiment of the present disclosure;

[0032] Figure 3 is a partial structural cross-sectional view of a key assembly in an exemplary embodiment of the present disclosure;

[0033] Figure 4 is a structural schematic diagram of a key assembly in an exemplary embodiment of the present disclosure;

[0034] Figure 5 is a structural diagram of a conductive base in an exemplary embodiment of the present disclosure;

[0035] Figure 6 yes Figure 5 Structural diagram from the perspective of the conductive base;

[0036] Figure 7 yes Figure 5 A schematic cross-sectional view of the connection between the conductive base body and the support leg;

[0037] Figure 8 yes Figure 5 Partial structural diagram of the conductive base;

[0038] Fig. 9It is a flow chart of a method for processing a key assembly in an exemplary embodiment of the present disclosure.

[0039] Explanation of the reference numerals: housing, 100; button mounting hole, 101; button positioning groove, 102; button, 10; button body, 11; latch, 12; key cap, 13; reinforcement, 14; conductive base, 20; switch mounting space, 200; conductive base body, 21; support foot, 22; first surface, 221; second surface, 222; arc surface, 223; first edge, 224; second edge, 225; switch module, 30; circuit board, 31; switch, 32; limit member, 40; limit member body, 41; spring sheet, 42; first section, 421; second section, 422; deformation section, 423. DETAILED DESCRIPTION

[0040] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Instead, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0041] The terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. Unless otherwise defined, the technical terms or scientific terms used in this specification should be understood by people with ordinary skills in the field to which the disclosure belongs. The words "first", "second" and similar words used in this specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate the existence of one. "Multiple" or "several" means two and more than two. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0042] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms of "a", "the" and "the" used in this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0043] Next, the embodiments of this specification are described in detail.

[0044] like Figures 1 to 4 As shown, the present disclosure provides a key assembly, which is applied to an electronic device. The key assembly includes a key 10, a conductive base 20, a switch module 30 and a limiter 40. The switch module 30 is located on one side of the key 10, and the conductive base 20 is fixed to a side of the key 10 close to the switch module 30. The conductive base 20 includes a conductive base body 21 and a support leg 22 disposed on the conductive base body 21 and extending toward the switch module 30. The switch module 30 includes a circuit board 31 and a switch 32. The support leg 22 elastically abuts against the circuit board 31, and the key 10 is fixedly connected to the housing 100 of the electronic device through the limiter 40.

[0045] By providing the support leg 22 and elastically contacting it to the circuit board 31, the support leg 22 is deformed to provide an upward supporting force to the key 10. The key 10 is fixedly connected to the housing 100 through the stopper 40, and the stopper 40 provides a downward contact force to the key 10. The supporting force of the support leg 22 and the contact force of the stopper 40 better fix the key 10 to the housing 100. Under the joint action of the support leg 22 and the stopper 40, the shaking of the key 10 can be more effectively suppressed, the stability of the key assembly is increased, and the anti-shaking performance of the key assembly is improved.

[0046] The supporting force of the support leg 22 can prevent the button 10 from moving downward, that is, preventing the button 10 from being displaced in a direction close to the circuit board 31. The abutting force of the stopper 40 can prevent the button 10 from shaking upward, that is, preventing the button 10 from being displaced in a direction away from the circuit board 31. The support leg 22 and the stopper 40 can prevent the button 10 from shaking in the up and down directions. At the same time, there is friction between the support leg 22 and the circuit board 31, which can prevent the button 10 from shaking in the front-to-back direction, left-to-right direction, and other directions.

[0047] Since the support leg 22 is arranged on the conductive base body, for example, the support leg 22 is directly extended from the conductive base body 21, the conductive base 20 can be changed for different keys. The assembly relationship between the conductive base 20 and the circuit board 31 is relatively fixed, so the distance between the lower surface of the conductive base 20 and the upper surface of the circuit board 31 is relatively fixed, the structural design is relatively unified, the universality is high, the degree of experience dependence is low, it is easy to normalize and standardize, the cost is low, and different keys can maintain the consistency of the feel. The support leg 22 can also be a separate part from the conductive base body 21, and the two can be fixed by gluing or other methods.

[0048] like Figure 1 and Figure 2 As shown, the key 10 may include a key body 11, a latch 12 and a key cap 13. The key cap 13 and the conductive base 20 are respectively located on both sides of the key body 11. The latch 12 is formed by extending from the key body 11 to both ends. The latch 12 abuts against the limiting member 40 to limit the key 10 and suppress the shaking of the key 10.

[0049] In one embodiment, the key 10 may be a fingerprint key, and the keycap 13 is an LGA module (Land Grid Array) with a fingerprint chip disposed therein. An FPC (Flexible Printed Circuit) is disposed between the keycap 13 and the key body 11. A reinforcement member 14 extends from one end of the key body 11 close to the keycap 13. The provision of the reinforcement member 14 increases the connection area between the key body 11 and the keycap 13, and increases the structural rigidity. In this embodiment, the keycap 13 is a separate component, and the key body 11, the gripper 12, and the reinforcement member 14 may each be a separate component, or may be integrally formed, or may be partially separate components and partially integrally formed.

[0050] In other embodiments, the specific type of the key 10 is not limited, for example, the key 10 can be a power key, a volume key, etc. The key 10 can be integrally formed, which has high strength and is easy to manufacture. The reinforcing member 14 can be omitted, and the key body 11 is directly extended from the key cap 13, which can reduce the space occupied by the key 10. In this embodiment, the key body 11, the gripper 12 and the key cap 13 can each be a separate component, or partly a separate component and partly integrally formed.

[0051] like Figure 2 As shown, the conductive base body 21 may be a rectangular parallelepiped, which is fixed to the key 10 by dispensing glue. In some embodiments, the conductive base body 21 may be in other shapes. For example, the conductive base body 21 may be a triangular body or a cylinder, etc. The shape of the conductive base body 21 may be selected according to the shape of the key 10.

[0052] The support leg 22 may be in the form of a sheet, and includes a first surface 221, a second surface 222, and an arc surface 223 connecting the first surface 221 and the second surface 222. The arc surface 223 abuts against the circuit board 31. When the support leg 22 is deformed, the contact position between the support leg 22 and the circuit board 31 will change. By providing the arc surface 223, the contact between the support leg 22 and the circuit board 31 is made smoother. In addition, a certain contact area can be ensured, which is conducive to increasing the friction between the support leg 22 and the circuit board 31, and suppressing the forward and backward and left and right shaking of the key 10.

[0053] In other embodiments, the shape of the contact position between the support leg 22 and the circuit board 31 is not limited. For example, the contact position between the support leg 22 and the circuit board 31 can be set to a plane, which can increase the contact area between the support leg 22 and the circuit board 31, increase the friction between the support leg 22 and the circuit board 31, and further suppress the shaking of the button 10 in the front-to-back direction and the left-to-right direction.

[0054] In one embodiment, the first surface 221 is tilted relative to the second surface 222, and a first angle is formed between the first surface 221 and the second surface 222, so that the support leg 22 is thinner at a position close to the circuit board 31, and is easy to deform, thereby improving the pressing feel of the key assembly. At the same time, the thickness of the connection between the support leg 22 and the conductive base body 21 is relatively high, which improves the strength of the connection and prevents the connection from being damaged by pulling. In other embodiments, the first surface 221 and the second surface 222 can also be arranged in parallel to increase the thickness of the support leg 22 at a position close to the circuit board 31, increase the supporting force generated by the deformation of the support leg 22, and change the pressing feel of the key assembly.

[0055] In one embodiment, the support leg 22 may be in the shape of an elongated strip, extending from one side of the conductive base body 21 to the other side of the conductive base body 21, thereby increasing the length of the conductive base body 21 in the front-to-back direction, increasing the supporting force generated by the deformation of the support leg 22, further improving the stability of the button assembly, and more effectively suppressing the shaking of the button 10.

[0056] In other embodiments, the shape of the support leg 22 is not limited. For example, the support leg 22 can be a square column or a cylinder, or can be a hollow cylinder or a hollow truncated cone. In the embodiment where the support leg 22 is a hollow cylinder or a hollow truncated cone, the switch 32 is arranged in the hollow support leg 22.

[0057] There may be two legs 22. The two legs 22 can increase the support force of the legs 22 on the key 10. In other embodiments, the number of legs 22 is not limited, for example, the number of legs 22 can be one or more. By providing more legs 22, the support force on the key 10 can be further improved. Only one leg 22 is provided, which can save materials and reduce costs.

[0058] The material of the support leg 22 is not limited. For example, the material of the support leg 22 can be TPU (Thermoplastic Polyurethane Unit) with a hardness of 95A. By changing the hardness of the support leg 22, the pressing feel of the key assembly can be changed.

[0059] A pair of legs 22 can be arranged on both sides of the conductive base body 21, and can provide support force on both sides of the conductive base body 21, so as to provide a good support for the key 10. In other embodiments, the distribution position of the legs 22 is not limited, and can be distributed in the middle or around the conductive base body 21. The distribution of the legs 22 can be set according to their own shape, number and shape of the conductive base body 21. In the embodiment where the conductive base body 21 is a triangular prism, there can be three legs 22, and the three legs 22 are respectively distributed on the three sides of the triangular prism. In the embodiment where the conductive base body 21 is a cylinder, the number of the legs 22 can be multiple, and can be distributed along the circumferential direction. In the embodiment where the legs 22 are a hollow cylinder or a hollow truncated cone, the legs 22 can be distributed in the middle of the conductive base body 21.

[0060] In some embodiments, a pair of legs 22 located on both sides of the conductive base body 21 may be arranged in an eight-shaped arrangement, with the opening facing the circuit board 31. The switch 32 is located between the pair of legs 22. The eight-shaped arrangement is conducive to the deformation of the legs 22 themselves. When assembling the key 10, the legs 22 themselves will bend downward, and the connection between the legs 22 and the conductive base body 21 will be pulled. The deformation of the two places will generate corresponding deformation forces, which serve as a supporting force to support the key 10. That is, the angle formed by the eight-shaped can be an obtuse angle, such as 120°, so that the pair of legs can generate a supporting force by using the angle between each other when they are deformed by force.

[0061] In other embodiments, the arrangement of the legs 22 is not limited, as long as they can be deformed to generate a supporting force. For example, a pair of legs 22 can be arranged vertically downward. Alternatively, one leg 22 can be arranged vertically and the other leg 22 can be arranged obliquely. When the pair of legs 22 are arranged in an "eight" shape, their openings can also face the conductive base body 21.

[0062] like Figure 2 As shown, in one embodiment, the conductive base 20 further includes an installation space 200, the installation space 200 is located between the conductive base body 21 and the support leg 22, and the switch 32 is arranged in the installation space 200. By providing the installation space 200, the thickness of the conductive base body 21 can be reduced, thereby reducing the overall height of the key assembly and reducing the volume occupied by the key assembly. At the same time, the problem of the key assembly being too high and easy to shake can be prevented, thereby increasing the stability of the key assembly.

[0063] In this embodiment, if Figure 3As shown, the support leg 22 also includes a first side 224 and a second side 225 connecting the conductive base body 21. The first side 224 is located outside the installation space 200, and the second side 225 is located at the edge of the installation space 200. The distance between the second side 225 and the circuit board 31 is greater than the distance between the first side 224 and the circuit board 31, thereby expanding the volume of the installation space 200. By expanding the volume of the installation space 200, the thickness of the conductive base body 21 is further reduced, the volume occupied by the key assembly is reduced, the shaking of the key assembly due to the excessive height is suppressed, and the stability of the key assembly is improved.

[0064] In other embodiments, the distance between the second edge 225 and the circuit board 31 may also be less than or equal to the distance between the first edge 224 and the circuit board 31. Increasing the thickness of the conductive base body 21 can improve the strength of the conductive base body 21 and prevent the conductive base body 21 from being damaged when the support foot 22 is deformed.

[0065] The forms of the circuit board 31 and the switch 32 are not limited. For example, the circuit board 31 can be a flexible printed circuit (FPC), which has the characteristics of high wiring density, light weight, thin thickness, and good bending properties. The switch 32 can be a pot switch, which has the advantages of stable contact, strong conductivity, stable rebound, and good hand feel.

[0066] like Figure 1 As shown, in one embodiment, the stopper 40 may include a stopper body 41 and a pair of spring pieces 42 disposed at both ends of the stopper body 41. The spring pieces 42 abut against the clamping hand 12 and the housing 100. The stopper 40 only has one component abutting against the pair of clamping hands 12, which is easy to install and has high assembly efficiency.

[0067] In one embodiment, the limiter body 41 can abut against the key body 11 to limit the key 10 in the front-to-back direction, further suppressing the shaking of the key 10 in the front-to-back direction and improving the stability of the key assembly. In other embodiments, a certain distance can be left between the limiter body 41 and the key body 11 to prevent the limiter body 41 from scratching the key body 11 when the key 10 moves up and down, thereby affecting the operating feel of the key assembly.

[0068] like Figure 3As shown, each spring piece 42 includes a first section 421 and a second section 422 that are arranged opposite to each other, and a deformation section 423 that connects the first section 421 and the second section 422. The first section 421 abuts against the clamping hand 12 and one side of the housing 100, and the first section 421 abuts between the clamping hand 12 and the housing 100. The second section 422 abuts against the other side of the housing 100. The deformation section 423 is an arc. After installation, the deformation section 423 is deformed to fix the limiter 40 to the housing 100. The installation strength between the limiter 40 and the housing 100 can be improved, the shaking of the limiter 40 is reduced, thereby reducing the shaking of the key 10 and improving the stability of the key assembly.

[0069] In other embodiments, the structure of the limiter 40 is not limited, as long as it can limit the key 10 in the up and down directions. For example, the limiter 40 can be two separate plates, each of which is fixedly connected to the housing 100 and the clamping hand 12. The limiter 40 can be integrally formed with the housing 100 as a part of the housing 100, or it can be separately formed to reduce the difficulty of processing the housing 100.

[0070] like Figure 1 As shown, the present disclosure also provides an electronic device, including a housing 100 and the above-mentioned key assembly. The housing 100 is provided with a key mounting hole 101 and a key positioning groove 102. The key mounting hole 101 is connected to the key positioning groove 102, and the opening directions are perpendicular to each other. The key assembly is assembled to the housing 100. Due to the increased stability of the key assembly, the sophistication of the electronic device and the user experience are improved. The specific type of the electronic device is not limited, for example, the electronic device can be a mobile phone, a tablet, a computer, a television, etc.

[0071] In one embodiment, the key body 11 and the gripper 12 do not extend beyond the left and right ends of the keycap 13. That is, in the up-down direction, the projections of the key body 11 and the gripper 12 do not extend beyond the keycap 13. In an embodiment with a reinforcing member 14, the reinforcing member 14 also does not extend beyond the keycap 13. The key 10 can pass through the key mounting hole 101. The stopper 40 can pass through the opening of the key positioning groove 102 to fix the key 10 in the key positioning groove 102. During installation, the key 10 is first inserted along the key mounting hole 101, and then the stopper 40 is inserted between the key positioning groove 102 and the gripper 12, which is easy to install and has high assembly efficiency.

[0072] The present disclosure also provides a key assembly processing method, Fig. 9 is a flow chart of the processing method of the key assembly disclosed in the present invention, such as Fig. 9 As shown, the above method can be implemented by the following steps:

[0073] In step S901 , the cross-sectional area of ​​the connection between the conductive base body 21 and the support leg 22 is determined.

[0074] In step S902, the length of the first side is measured.

[0075] In step S903, the angle of the first included angle is determined according to the length of the first side.

[0076] The structural dimensions of the conductive base 20 have different effects on the pressing feel of the key assembly. Figure 5 and Figure 6 As shown, the main influencing factors are the conductive base matching height H1, the conductive base thickness H2, the support foot height H3, the support foot spacing X, the support foot support angle α, the support foot opening angle β, the support foot width Y, and the support foot length A.

[0077] If the height H1 of the conductive base is too large, the button will not be able to rebound. The thickness H2 of the conductive base affects whether the two sides of the conductive base 20 are lifted when the conductive base 20 is glued. The height H3 of the support leg affects the interference between the support leg 22 and the circuit board 31, which is used to absorb the tolerance and can also affect the support effect of the button 10. The support leg spacing X is used to avoid the switch 32, which affects the anti-shake effect of the button. The support leg support angle α affects the deformation direction of the support leg 22 when pressed, which indirectly affects the feel of the button. The support leg opening angle β and the support leg width Y affect the supporting force of the support leg 22.

[0078] Among various structural parameters, the most critical one is the cross-sectional area of ​​the connection between the conductive base body 21 and the support leg 22. Therefore, by setting the cross-sectional area of ​​the connection to a specific size, the consistency of the feel of different key components can be maintained.

[0079] Different key components are mainly different in the width Y of the foot, that is, the length of the first side 224 is different. During production, due to the obstruction of the conductive base body 21 and the foot 22, it is difficult to measure the foot length A and the foot support angle α. The foot opening angle β is the angle value of the first angle, which is related to the foot length A and is easy to measure. Therefore, the foot support angle α is set to a fixed value, and the foot length A is converted into a value related to the foot support angle α and the foot opening angle β, which facilitates the design, saves design costs and reduces the difficulty of measurement.

[0080] Please also read Figure 7 and Figure 8 As shown, the cross section of the connection between the leg 22 and the conductive base body 21 can be rectangular. By predefining the initial leg width Y0 and the initial leg length A0, the cross-sectional area of ​​the connection between the conductive base body 21 and the leg 22 is determined to be A0×Y0. According to the requirements of the electronic device, the actual leg width Y1 is determined. The actual leg opening angle β1 is calculated by the following formula:

[0081] Y0×A0=Y1×A (1)

[0082]

[0083]

[0084]

[0085]

[0086]

[0087] Among them, C, B0, and B1 are the lengths of the auxiliary lines. Since Y0, Y1, α, and β0 are all known, the value of β1 can be calculated. By determining the cross-sectional area of ​​the support leg 22 and the conductive base body 21, the structure of the support leg 22 is normalized and standardized, which improves production efficiency and saves costs in the design stage. The support force of the support leg is compensated by the support leg opening angle β and the support leg width Y, and the size measurement is simple and easy to calculate, which further improves production efficiency and design efficiency.

[0088] The above is only a preferred embodiment of the present disclosure and does not limit the present disclosure in any form. Although the present disclosure has been disclosed as a preferred embodiment as above, it is not used to limit the present disclosure. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present disclosure. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present disclosure without departing from the content of the technical solution of the present disclosure are still within the scope of the technical solution of the present disclosure.

Claims

1. A key assembly, characterized in that: Applicable to electronic equipment; the key assembly comprises: a key (10), a conductive base (20), a switch module (30) and a limiter (40); the switch module (30) is located on one side of the key (10); and the conductive base (20) is fixed to a side of the key (10) close to the switch module (30); The conductive base (20) comprises a conductive base body (21) and a support leg (22) disposed on the conductive base body (21) and extending toward the switch module (30); the switch module (30) comprises a circuit board (31) and a switch (32); The support leg (22) is elastically abutted against the circuit board (31), and the button (10) is fixedly connected to the housing (100) of the electronic device via the limiting member (40).

2. The key assembly according to claim 1, characterized in that: The conductive base (20) comprises at least two legs (22); a pair of legs (22) is arranged on both sides of the conductive base body (21).

3. The key assembly according to claim 2, characterized in that: The pair of legs (22) are arranged in an eight-shaped pattern, with their openings facing the circuit board (31); and the switch (32) is located between the pair of legs (22).

4. The key assembly according to claim 1, characterized in that: The conductive base (20) further comprises an installation space (200), wherein the installation space (200) is located between the conductive base body (21) and the support leg (22), and the switch (32) is arranged in the installation space (200).

5. The key assembly according to claim 4, characterized in that: The support leg (22) comprises a first edge (224) and a second edge (225) connecting the conductive base body (21); the first edge (224) is located outside the installation space (200); the second edge (225) is located at an edge of the installation space (200); and the distance between the second edge (225) and the circuit board (31) is greater than the distance between the first edge (224) and the circuit board (31).

6. The key assembly according to claim 1, characterized in that: The support leg (22) comprises a first surface (221), a second surface (222), and an arc surface (223) connecting the first surface (221) and the second surface (222), and the arc surface (223) abuts against the circuit board (31).

7. The key assembly according to claim 6, characterized in that: The first surface (221) is arranged to be inclined relative to the second surface (222).

8. The key assembly according to claim 1, characterized in that: The support leg (22) extends from one side of the conductive base body (21) to the other side of the conductive base body (21).

9. The key assembly according to claim 1, characterized in that: The button (10) comprises a button body (11) and a pair of latching hands (12) extending to two ends; the limiter (40) comprises a limiter body (41) and a pair of spring sheets (42) arranged at two ends of the limiter body (41); the spring sheets (42) abut against the latching hands (12) and the housing (100).

10. The key assembly according to claim 9, characterized in that: Each of the elastic sheets (42) comprises a first section (421) and a second section (422) which are arranged opposite to each other, and a deformation section (423) connecting the first section (421) and the second section (422); the first section (421) abuts against the clamping hand (12) and one side of the shell (100); and the second section (422) abuts against the other side of the shell (100).

11. The key assembly according to claim 1, characterized in that: The key (10) comprises a key body (11) and a key cap (13); the key cap (13) and the conductive base (20) are respectively located on two sides of the key body (11); and a reinforcement piece (14) extends from one side of the key body (11) close to the key cap (13) to both ends.

12. An electronic device, characterized in that: include: A housing (100) and a key assembly according to any one of claims 1 to 11, wherein the key assembly is assembled to the housing (100).

13. The electronic device according to claim 12, characterized in that: The housing (100) is provided with a button installation hole (101) and a button positioning groove (102), the button installation hole (101) is connected to the button positioning groove (102), and the opening directions are perpendicular to each other; The button (10) can pass through the button mounting hole (101), and the limiting member (40) can pass through the opening of the button positioning groove (102) to fix the button (10) in the button positioning groove (102).

14. A method for processing a key assembly, characterized in that: The key assembly comprises a key (10), a conductive base (20) and a switch module (30); the conductive base (20) comprises a conductive base body (21) and a support leg (22) arranged on the conductive base body (21) and extending toward the switch module (30); The support leg (22) comprises a first surface (221) and a second surface (222), wherein the first surface (221) and the second surface (222) form a first angle; The cross section of the connection between the conductive base body (21) and the support leg (22) is rectangular, and the cross section includes a first side connected to the first surface (221); The method comprises: determining the cross-sectional area of ​​the connection between the conductive base body (21) and the support leg (22); Measure the length of the first side; The angle of the first angle is determined according to the length of the first side.

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