Key structure and electronic device

Abstract

A key structure and an electronic device are disclosed. The key structure includes a circuit board, a first portion, a second portion, and a reinforcing structure. The circuit board has a switch. The first portion is located above the switch of the circuit board. The second portion partially covers and surrounds the first portion. The reinforcing structure is disposed on the first portion. A Young's modulus of the reinforcing structure is greater than a Young's modulus of the first portion.

Description

Technical Field

[0001] This invention relates to a button structure, and more particularly to a button structure and electronic device with a reinforcing structure. Background Technology

[0002] Buttons are one of the most familiar input devices to modern people. They can be found in various fields, from consumer products to industrial equipment, allowing users to operate or perform preset functions. Furthermore, buttons can be individually placed in desired locations according to different needs.

[0003] For example, in some medical or nursing homes, to ensure the convenience and safety of certain groups, single-button access is often installed in easily accessible locations such as beside beds or in bathrooms. This allows users to quickly contact or notify relevant personnel in case of emergencies or emergencies. Furthermore, based on the characteristics of these users and usage scenarios, these buttons typically require a large pressing area for easy identification and pressing. For instance, while balancing recognizability and operability, the area of ​​these single-button accessibility is usually at least larger than the size of a single finger joint. In addition, for waterproofing, aesthetic design, and tactile feedback, the finger-pressable portion of these buttons also needs to be made of soft materials.

[0004] However, this also means that when a user presses the outer ring of the soft material with their finger, if the pressure depth is insufficient or the area pressed is too small, the soft material in that area may not sink sufficiently to activate the soft material in the center area and trigger the switch below. Therefore, it is clear that traditional buttons with larger pressing areas have issues such as poor tactile feedback or inconvenience in operation that need to be addressed. Summary of the Invention

[0005] In view of this, one of the objectives of the present invention is to provide a button structure and electronic device, thereby solving the problems of poor tactile feel or inconvenience of operation of traditional buttons.

[0006] A button structure disclosed in an embodiment of the present invention includes a circuit board, a first part, a second part, and a reinforcing structure. The circuit board has a switch. The first part is located above the switch on the circuit board. The second part partially covers and surrounds the first part. The reinforcing structure is disposed on the first part. The Young's modulus of the reinforcing structure is greater than that of the first part.

[0007] An electronic device disclosed according to another embodiment of the present invention includes a housing, a first part, a circuit board, and a reinforcing structure. The circuit board has a switch. The housing has an accommodating space. The first part is disposed on the housing and located on one side of the accommodating space. The circuit board is accommodated within the accommodating space. The circuit board has a switch corresponding to the first part. The reinforcing structure is disposed on the first part, and the reinforcing structure and the orthographic projection of the housing onto a plane parallel to the circuit board in the direction from the first part to the circuit board do not overlap.

[0008] According to the button structure and electronic device disclosed in the foregoing embodiments of the present invention, since the first part located above the switch on the circuit board is provided with a reinforcing structure, the elastic deformation generated by applying force to the first part can increase the swing amplitude of the first part through the linkage of the reinforcing structure, so as to ensure that applying force to each part of the first part can effectively trigger the switch below, thereby solving the problem that traditional buttons with a large pressing area will have poor feel or inconvenient operation when pressing a specific area.

[0009] The above description of the disclosed contents of this invention and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of this invention, and to provide a further explanation of the scope of this patent application. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of a button structure according to an embodiment of the present invention;

[0011] Figure 2 for Figure 1 A cross-sectional three-dimensional schematic diagram of the button structure;

[0012] Figure 3 for Figure 2 A side sectional view of the button structure;

[0013] Figure 4 for Figure 1 A schematic diagram of the first part, the second part, and the reinforcing structure of the button structure projected onto the plane of the circuit board from the first part toward the circuit board.

[0014] Figure 5 for Figure 3 A side cross-sectional diagram of the button structure in response to external force pressing.

[0015] Figure 6 This is a side sectional view of the button structure according to another embodiment of the present invention;

[0016] Figure 7 This is a side sectional view of the button structure according to another embodiment of the present invention;

[0017] Figure 8This is a side sectional view of the button structure according to another embodiment of the present invention;

[0018] Figure 9 for Figure 8 A side cross-sectional diagram of the button structure in response to external force pressing.

[0019] Figure 10 This is a side sectional view of the button structure according to another embodiment of the present invention.

[0020] Symbol Explanation

[0021] 1, 1a, 1b, 1c, 1d: Key structure, electronic device

[0022] 10: Outer shell

[0023] 11: Part Two

[0024] 12: Part Three

[0025] 20, 20a, 20b: Part One

[0026] 21: Central Area

[0027] 22: Outer Zone

[0028] 30, 30a, 30b, 30c: Reinforcing structures

[0029] 40: Circuit board

[0030] 50: Light-emitting element

[0031] 60: Stop structure

[0032] 70: Metallic elastic structure

[0033] B: Battery

[0034] C: Center

[0035] D1, D2: Spacing distance

[0036] L1, L2, L3: Length

[0037] N: Normal direction

[0038] P: Plane

[0039] P1, P2, P3: Orthographic projection

[0040] S: Storage space

[0041] SW: Switch

[0042] T,T': Contact structure

[0043] T1, T2: Thickness

[0044] TD: Horizontal direction Detailed Implementation

[0045] The following description, accompanied by the accompanying drawings, provides sufficient detail to enable those skilled in the art to thoroughly understand and practice the invention. However, it should be understood that the following description is not intended to limit the invention to certain specific embodiments. Rather, it is intended to cover substitutions, modifications, and equivalents to the various embodiments defined by the claims. Furthermore, the proportions or dimensions of elements in the drawings may be slightly enlarged or altered for ease of understanding and viewing, but this is not intended to limit the invention.

[0046] The following text may use terms such as “substantially,” “about,” and “probably” to describe a reasonable or acceptable deviation from the modified situation or event that may still achieve the expected result. The following text may also use “at least one” to describe the quantity of the described items, but unless explicitly stated otherwise, it should not be limited to the case of “only one.” The following text may also use the term “and / or,” which should be understood to include any of the listed items and all combinations of one or more of them. The following text may also use terms such as “connect,” “set,” “fix,” and “assemble” to describe the relative positional relationship of multiple described items, but unless explicitly stated otherwise, it should not be limited to the described items being “connected,” “set,” “fixed,” or “assembled” to another described item in a direct manner without intermediaries, but can be understood to include cases where one or more intermediaries may be present between the described items.

[0047] This invention proposes some exemplary button structures that can ensure that pressing relatively far from the center area can still easily actuate the switch in some applications where the pressing area is large (e.g., at least larger than the index finger or thumb).

[0048] First, please refer to Figures 1-4 One embodiment of the present invention provides a button structure 1. It should be noted that the accompanying drawings may be presented in a simplified schematic manner, and the dimensions and proportions of various features in the drawings may be arbitrarily adjusted and scaled for ease of understanding and explanation, but the present invention is not limited thereto. Furthermore, to maintain the simplicity of the drawings, some features or components may be omitted and not shown.

[0049] In this embodiment, the button structure 1 may include a first part 20, a second part 11, a circuit board 40, and a reinforcing structure 30. The first part 20 refers to the relatively soft and elastic portion of the button structure 1, designed for the user to press and operate the button structure 1. The second part 11 may be one of the portions of the button structure 1 used to hold the first part 20. The circuit board 40 is the portion within the button structure 1 used to carry electronic / non-electronic components that perform various related functions; thus, the button structure 1 itself can be considered an electronic device. The reinforcing structure 30 is disposed on the first part 20 and is harder than the first part 20. Specifically, the Young's modulus of the reinforcing structure 30 may be greater than that of the first part 20. Therefore, the presence of the reinforcing structure 30 allows the elastic deformation of the outer ring area of ​​the first part 20 when pressed to effectively extend to the central area of ​​the first part 20.

[0050] Optionally, the button structure 1 may also include a third part 12, and the second part 11 may be assembled to the third part 12 in any suitable manner or by any means to jointly define an accommodating space S, but the present invention is not limited thereto; for example, in the button structure of other embodiments, the second part and the third part may also be an integrally formed single structure. The second part 11 and the third part 12 may together form a housing 10 for surrounding, accommodating and supporting the aforementioned first part 20, circuit board 40 and other related components. For example, a battery B may also be accommodated between the second part 11 and the third part 12. The battery B may be, but is not limited to, being fixed to the second part 11 and / or the third part 12 and electrically connected to the circuit board 40 to provide the power required for the operation of the button structure 1. Thus, the button structure 1 of this embodiment can be a self-powered single button or electronic device, but the present invention is not limited thereto; for example, in other embodiments, the button structure may also be integrated into other systems and draw power from external sources. Of course, any required electronic / non-electronic components, such as start switches, connection ports, microprocessors, antennas, signal transmission modules, light guide structures, circuits, etc., may be added on or around the second part 11 and the third part 12, or on or around the circuit board 40, depending on other needs, but the present invention is not limited thereto.

[0051] Optionally, the Young's modulus of the second part 11 may be greater than that of the first part 20. For example, the second part 11 may be made of any suitable, relatively rigid plastic, while the first part 20 may be made of a relatively soft material with elastic deformation capabilities, such as silicone or rubber. Specifically, the first part 20 may be made of, for example, thermoplastic polyester elastomer (TPEE), which may have a Young's modulus of approximately 57 MPa. Therefore, when a user applies force to the first part 20, the first part 20 can undergo elastic deformation and move relative to the second part 11. It should be further noted that the first part 20 may be connected to the second part 11 in any suitable manner. For example, the first part 20 and the second part 11 may be combined using any suitable adhesive or manufactured using a double injection molding process, but the invention is not limited thereto. Of course, depending on the actual needs, in other embodiments of the button structure, the Young's modulus of the second part may be substantially equal to or less than that of the first part. In other words, the second part may not be limited to being made of the same or different materials as the first part. For example, in some other embodiments of the button structure, the first part and the second part may also be a single integrally formed structure.

[0052] In this embodiment, the first part 20 may be partially exposed from the area surrounded by the second part 11; in other words, the second part 11 may partially cover and surround the first part 20. Here, the exposed surface of the first part 20 may be defined as having a center C, which may, for example, refer to the geometric center of the first part 20. Based on this, the first part 20 may be further defined as including a central region 21 and a peripheral region 22. The central region 21 connects to the second part 11 via the peripheral region 22, for example referring to an area on the first part 20 located at or near the center C or further away from the second part 11. The peripheral region 22, for example, refers to an area on the first part 20 further away from the center C or closer to the second part 11. The central region 21 and the peripheral region 22 are provided only for the purpose of subsequent explanation, and there may be no physical structural line separating them.

[0053] Circuit board 40 can be fixed to the second part 11 and / or the third part 12 by any suitable means or method, such that a switch SW protruding from circuit board 40 is located below the first part 20. The switch SW can be, but is not limited to, any touch-sensitive switch commonly found in buttons. The switch SW can be electrically connected to circuit board 40 and can produce a predetermined response or feedback upon receiving a touch. As shown, at least a portion of the first part 20 is located above the switch SW on circuit board 40. More specifically, the switch SW on circuit board 40 can, for example, be positioned between the central area 21 of the first part 20 and circuit board 40.

[0054] Optionally, the button structure 1 may further include a contact structure T located between the first part 20 and the circuit board 40, for linkage with the first part 20 to contact the switch SW. Specifically, the contact structure T may be located between the central area 21 of the first part 20 and the switch SW. In this embodiment, the contact structure T may be integrally formed and protrude from the side of the first part 20 facing the circuit board 40 and corresponding to the switch SW. In other words, the contact structure T in this embodiment can be regarded as a protruding structure on the first part 20 protruding towards the switch SW.

[0055] The reinforcing structure 30 can be disposed on the side of the first part 20 facing the circuit board 40 in any suitable manner or by any suitable means. For example, the reinforcing structure 30 and the first part 20 can be combined using any suitable adhesive, manufactured using insert molding, or fabricated together with the first part 20 using a multiple-material injection molding process, but the invention is not limited thereto. As shown, the reinforcing structure 30 can be, for example, plate-shaped, and the reinforcing structure 30 can be at least distributed in the region between the contact structure T and the second part 11. For example, the reinforcing structure 30 can overlap at least a portion of the central region 21 of the first part 20, and the reinforcing structure 30 can surround or connect to the contact structure T.

[0056] Specifically, such as Figure 4 As shown, on an imaginary plane P to which the circuit board 40 belongs, the orthographic projection P2 of the reinforcing structure 30 on the plane P at least overlaps with the orthographic projection P1 of the first part 20 on the plane P, but the reinforcing structure 30 can maintain a distance from the second part 11, so the orthographic projection P2 of the reinforcing structure 30 on the plane P and the orthographic projection P3 of the second part 11 on the plane P can not overlap with each other; more specifically, the orthographic projections of the reinforcing structure 30 and the second part 11 onto the plane P in the direction from the first part 20 to the circuit board 40 do not overlap with each other.

[0057] Furthermore, the reinforcing structure 30 can be made of any suitable material that is harder than the first part 20. For example, the reinforcing structure 30 can be made of polycarbonate (PC), which can have a Young's modulus of about 2236 MPa. Of course, if it is desired that the reinforcing structure 30 has higher hardness or rigidity, the reinforcing structure 30 can also be made of steel. In this case, the reinforcing structure 30 can achieve the same or higher rigidity with a thinner thickness. However, the present invention is not limited to the material of the reinforcing structure; for example, in other embodiments, the reinforcing structure can also be made of other suitable materials with a softer texture. In this case, the structural rigidity required by the reinforcing structure can be achieved by increasing the thickness of the reinforcing structure.

[0058] In applications where the button structure 1 requires a larger area of ​​soft material for pressing (e.g., a single button for emergency notification in medical or nursing settings), the portion of the first part 20 exposed from the second part 11 (or, the portion of the button structure 1 that the user can press) is visually significantly larger than other types of buttons, such as keyboard buttons. Under this requirement, the first part 20 can have a significantly different size ratio from the switch SW, resulting in a greater distance between the outer ring area of ​​the first part 20 (i.e., the outer perimeter 22) and the switch SW. Therefore, to ensure that the user can easily actuate the switch SW when pressing the outer ring area 22 of the first part 20, the size and proportion between the first part 20 and components such as the reinforcing structure 30 can be designed accordingly.

[0059] For ease of subsequent explanation, a transverse direction TD is defined here, which refers to a direction substantially parallel to the circuit board 40; specifically, the transverse direction TD can refer to any direction substantially perpendicular to a normal direction N of the circuit board 40. In the transverse direction TD, the length from the center C of the first part 20 to the boundary between the first part 20 and the second part 11 is defined as L1, that is, the length of the portion of the first part 20 exposed from the second part 11 is 2L1; the spacing between the reinforcing structure 30 and the second part 11 is defined as D1, the spacing between the reinforcing structure 30 and the center C of the first part 20 is defined as D2, the thickness of the first part 20 is defined as T1, the thickness of the reinforcing structure 30 is defined as T2, the length of the reinforcing structure 30 is defined as L2, and the length of the switch SW is defined as L3. It should be further noted that the lateral direction TD and other dimensions thereunder may be defined based on, but are not limited to, the major axis or minor axis of the external contour of the button structure 1, but the present invention is not limited thereto; for example, in other embodiments where the overall contour of the button structure is substantially circular, the lateral direction may be defined based on any radial direction of the circular contour.

[0060] In some of the aforementioned applications, the length of the portion of the first part 20 exposed from the second part 11 (i.e., 2L1) is typically at least greater than 30 millimeters (mm), while the length of the switch SW (i.e., L3) can be only about 1.7 mm. Therefore, 2L1 can be at least 17.6 times longer than L3 (i.e., 2L1 / L3 ≥ 17.6). To ensure a good tactile feel under such design conditions, the dimensions and proportions of components such as the first part 20 and the reinforcing structure 30 can, but are not limited to, satisfy at least one of the following conditions:

[0061] 8 / 3≤L1 / D1≤4;

[0062] 2.92≤D1 / T1≤4.38.

[0063] Under the aforementioned conditions, for a design where the Young's modulus of the reinforcing structure 30 is greater than that of the first part 20, please refer to the following section. Figure 5 The elastic deformation generated by the force applied to the outer area 22 of the first part 20 can increase the swing amplitude of the central area 21 of the first part 20 through the linkage of the reinforcing structure 30. In other words, the reinforcing structure 30 can extend and transmit the downward pressure applied to the outer area 22 of the first part 20 to the central area 21 of the first part 20, thereby effectively linking the contact structure T located in the central area 21 to press the switch SW below it. Or, the reinforcing structure 30 can ensure that the contact structure T has sufficient displacement or sinking to touch the switch SW when the outer area of ​​the first part 20 is deformed by force, thereby solving the problem that traditional buttons with a large pressing area may have poor feel or inconvenient operation when pressing a specific area.

[0064] In one example, the aforementioned button structure 1 of the present invention may also satisfy the following conditions:

[0065] T2≈(1 / 30)×L2.

[0066] For example, T2 can be approximately 0.8 mm, while L2 can be approximately 25.7 mm. This configuration helps the reinforcing structure 30 maintain sufficient structural rigidity in a thin structure.

[0067] In one example, the aforementioned button structure 1 of the present invention may also satisfy the following conditions:

[0068] D1≈(1 / 4)×L1;

[0069] T1≈(1 / 3)×D1; and

[0070] T1≈(1 / 12)×L1.

[0071] For example, D1 can be approximately 4.5mm, L1 can be approximately 17.5mm, and T1 can be approximately 1.55mm. This configuration helps the peripheral area 22 to effectively actuate the switch SW via the linkage reinforcement structure 30 with only a small pressing stroke. In other words, this configuration allows the peripheral area 22 to actuate the switch SW with only a low pressing force.

[0072] Referring to Table 1 below, in an actual test, the aforementioned button structure 1 (e.g., making L1 / D1≈4) and the button structure 1 with its reinforcing structure 30 further shortened (e.g., making L1 / D1≈8 / 3) were designated as experimental groups (No.1-2). The button structure 1 with the reinforcing structure 30 removed (i.e., making D1=L1) was designated as the control group (No.3). Using a button load curve testing machine, the conditions of pressing with the tip of a human fingertip were simulated with a 9 mm diameter pressing head and a downward pressure of approximately 1300 gf. Tests were conducted on the same locations (e.g., the outer area 22) of the experimental and control groups. It can be seen that the switch without the reinforcing structure could not be successfully actuated. On the contrary, with the reinforcing structure, the user can successfully actuate the switch with substantially the same pressing force, thereby providing a better pressing feel while ensuring operability.

[0073] Table 1

[0074]

[0075]

[0076] Of course, the button structure (or electronic device) of the foregoing embodiments is merely one example of the present invention and is not intended to limit the present invention. In various practical situations, those skilled in the art can easily make any suitable modifications or adjustments to the button structure based on the basic configuration described in the foregoing embodiments. The following will illustrate how the present invention can also achieve the aforementioned results. Figure 5 This paper describes button structures in other embodiments that offer the same effect. However, it should be noted that, for the purpose of brevity, the following description mainly focuses on the differences between the described button structure and the button structures of the aforementioned embodiments. Similar or identical descriptions can be understood by referring to the corresponding paragraphs above, and therefore may be omitted or not repeated. Furthermore, the same reference numerals can be used to refer to the same components or elements.

[0077] For example, please refer to Figure 6Another embodiment of the present invention provides a button structure 1a, wherein a reinforcing structure 30a is embedded in a first part 20a and located between the first part 20a and the contact structure T', so that a portion of the first part 20a has a light-transmitting effect. Specifically, the button structure 1a may further include at least one light-emitting element 50 (e.g., but not limited to an organic light-emitting diode) disposed between the circuit board 40 and the reinforcing structure 30a. The reinforcing structure 30a may be integrally formed with the contact structure T' and pass through the first part 20a. Furthermore, the reinforcing structure 30a and the contact structure T' may be made of a suitable light-permeable material. In this configuration, the light emitted by the light-emitting element 50 can be transmitted to the outside through the reinforcing structure 30a to form the desired light-emitting pattern on the exposed surface of the first part 20a.

[0078] Alternatively, please see Figure 7 In another embodiment of the present invention, the button structure 1b may be partially embedded in the first part 20b without penetrating it. In this case, both the first part 20b and the reinforcing structure 30b may be made of a light-transmitting material, so that the part of the first part 20b and the reinforcing structure 30b that overlaps but is not penetrated by the reinforcing structure 30b can allow light to pass through. This can also form the desired light-emitting pattern on the exposed surface of the first part 20b.

[0079] Alternatively, please see Figures 8-9 Another embodiment of the present invention provides a button structure 1c, which further includes at least one stop structure 60. The stop structure 60 can be integrally formed on the side of the reinforcing structure 30c facing the circuit board 40. The stop structure 60 can be adjacent to the contact structure T' and extend and protrude in the direction towards the circuit board 40. In this configuration, when the first part 20 is pressed and the contact structure T' contacts the switch SW, the stop structure 60 can abut against the circuit board 40 to prevent the contact structure T' from damaging the switch SW when the pressing force is too large or the first part 20 is pressed excessively.

[0080] Alternatively, please see Figure 10 Another embodiment of the present invention proposes a button structure 1d, which may further include at least one metal elastic structure 70 connected between the reinforcing structure 30 and the circuit board 40. In this configuration, the reinforcing structure 30 may be made of metal or contain metal material, so as to form a metal shield in combination with the metal elastic structure 70, thereby achieving the effect of avoiding electromagnetic interference (EMI).

[0081] Of course, based on the foregoing embodiments or other practical needs, those skilled in the art can easily make any further modifications or adjustments to the button structure; for example, in other embodiments, the button structure may omit the contact structure and instead use the first part or reinforcement structure to directly press the switch.

[0082] According to the button structure and electronic device disclosed in the foregoing embodiments of the present invention, since the Young's modulus of the reinforcing structure disposed in the first part and between the contact structure and the second part is greater than that of the first part, the elastic deformation generated by applying force to the first part can increase the swing amplitude of the first part through the linkage of the reinforcing structure, thereby helping to increase the amplitude of the linkage of the first part to the contact structure, so as to ensure that the application of force to each part of the first part can effectively trigger the switch below, thereby solving the problem that traditional buttons with a large pressing area will have poor feel or inconvenient operation when pressing a specific area.

[0083] While the present invention has been disclosed in conjunction with the above embodiments, it is not intended to limit the invention. Any modifications and refinements made without departing from the spirit and scope of the invention are within the scope of patent protection of the present invention. Please refer to the appended claims for the defined scope of protection of the present invention.

Claims

1. A button structure, comprising: The circuit board is equipped with a switch; The first part is located above the switch on the circuit board and has a center; The second part partially covers and surrounds the first part; A reinforcing structure is disposed on the first part, wherein the Young's modulus of the reinforcing structure is greater than the Young's modulus of the first part, and A contact structure, located between the first part and the circuit board, is used to contact the switch in conjunction with the first part. The reinforcing structure is located at least in the area between the contact structure and the second part. The contact structure is integrally formed on the reinforcing structure and protrudes from the side of the reinforcing structure facing the circuit board, or the contact structure is integrally formed on the first part and protrudes from the side of the first part facing the circuit board, and the reinforcing structure surrounds the contact structure. The first part includes a central area and a peripheral area. The central area corresponds to the switch and is connected to the second part via the peripheral area. At least part of the reinforcing structure overlaps with the central area. Wherein, in the transverse direction substantially parallel to the circuit board, the length of the portion of the first part exposed from the second part is 2L1, and the length of the switch is L3, which satisfies the following condition: 2L1 / L3≥17.6, and Wherein, in a direction substantially parallel to the transverse direction of the circuit board, the thickness of the first part is defined as T1, the length from the center of the first part to the junction of the first part and the second part is defined as L1, and the spacing between the reinforcing structure and the second part is defined as D1, which satisfies the following conditions: 8 / 3≤L1 / D1≤4, 2.92≤D1 / T1≤4.

38.

2. The button structure as claimed in claim 1, wherein the reinforcing structure is located on the side of the first part facing the circuit board.

3. The button structure as described in claim 1, wherein the Young's modulus of the second part is greater than the Young's modulus of the first part.

4. The button structure as described in claim 1, wherein the reinforcing structure is light-transmitting.

5. The button structure as claimed in claim 4, wherein at least a portion of the reinforcing structure passes through the first part.

6. The button structure as described in claim 4, wherein at least a portion of the reinforcing structure is embedded in the first part, and the first part is light-transmitting.

7. The button structure as described in claim 4 further includes at least one light-emitting element disposed between the circuit board and the reinforcing structure.

8. The button structure as described in claim 1 further includes at least one stop structure protruding from the reinforcing structure toward the circuit board.

9. The button structure as described in claim 1 further includes at least one metal elastic structure connected between the reinforcing structure and the circuit board.

10. The button structure of claim 1, wherein, in a direction substantially parallel to the lateral direction of the circuit board, the length of the portion of the first part exposed from the second part is at least greater than 30 mm.

11. The button structure as claimed in claim 1, wherein the exposed surface of the first part includes the central region and the peripheral region.

12. The button structure as claimed in claim 1, further comprising a battery located on one side of the second part and electrically connected to the circuit board.

13. An electronic device comprising: The outer casing has a accommodating space; The first part is disposed on the outer casing and located on one side of the accommodating space; The second part partially covers and surrounds the first part; A circuit board is housed within the accommodating space, wherein the circuit board is provided with a switch corresponding to the first part; A reinforcing structure is disposed on the first part, and the reinforcing structure and the orthographic projection of the outer casing onto a plane parallel to the circuit board in the direction from the first part to the circuit board do not overlap. A contact structure, located between the first part and the circuit board, is used to contact the switch in conjunction with the first part. The reinforcing structure is located at least in the area between the contact structure and the second part. The contact structure is integrally formed on the reinforcing structure and protrudes from the side of the reinforcing structure facing the circuit board, or the contact structure is integrally formed on the first part and protrudes from the side of the first part facing the circuit board, and the reinforcing structure surrounds the contact structure. The first part includes a central area and a peripheral area. The central area corresponds to the switch and is connected to the second part via the peripheral area. At least part of the reinforcing structure overlaps with the central area. Wherein, in the transverse direction substantially parallel to the circuit board, the length of the portion of the first part exposed from the second part is 2L1, and the length of the switch is L3, which satisfies the following condition: 2L1 / L3≥17.6, and Wherein, in a direction substantially parallel to the transverse direction of the circuit board, the thickness of the first part is defined as T1, the length from the center of the first part to the boundary between the first part and the second part is L1, and the spacing between the reinforcing structure and the second part is D1, which satisfies the following conditions: 8 / 3≤L1 / D1≤4, 2.92≤D1 / T1≤4.

38.

14. The electronic device of claim 13, wherein the Young's modulus of the housing is greater than the Young's modulus of the first portion.

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