Key assembly and protective shell

By combining a flexible support frame, circuit board, and glass panel, the problem of poor grip experience of touch buttons in existing electronic devices is solved, and a thin and light button component design is achieved, which improves the user experience and the protection of the buttons.

CN223712623UActive Publication Date: 2025-12-23DONGGUAN ZHIJI TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520277855.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-20
Publication Date
2025-12-23
Estimated Expiration
2035-02-20

AI Technical Summary

Technical Problem

The touch buttons on existing electronic devices have a poor grip experience after being covered by a protective case, and are prone to wear and tear. Furthermore, the thickness of existing protective cases negatively impacts the user experience.

Method used

The device employs a combination structure of a flexible support frame, a circuit board, and a glass panel. The flexible support frame has through holes at the bottom of the mounting groove, the circuit board is embedded in the through holes and exposed, and the glass panel is embedded in the mounting groove. It is connected to the touch buttons by supporting the circuit board, forming a thin button assembly. A protective shell is then used to protect the buttons.

Benefits of technology

The design achieves a slim and lightweight button assembly, improving the user's grip and touch sensitivity, reducing button wear, protecting the buttons from dust and dirt, providing natural pressing feedback, reducing accidental operation, and making it suitable for various protective cases while saving costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of keys, in particular to a key assembly and a protective shell, the key assembly comprises a flexible support frame, a circuit board and a glass panel, one side of the flexible support frame is provided with a mounting groove, the flexible support frame is provided with a through hole at the bottom of the mounting groove, the circuit board is embedded in the through hole, and the glass panel is arranged on the circuit board. The two surfaces of the flexible support frame are exposed out of the flexible support frame; and the glass panel is embedded in the mounting groove, is exposed out of the protective shell, and is connected with the touch key by abutting against the circuit board. According to the assembly provided by the utility model, the technical problem that the touch key experience feeling of the existing electronic equipment shell is poor is solved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to key technical field, especially a kind of key assembly and protective housing. BACKGROUND

[0002] Some existing electronic equipment, such as iPhone 16 series mobile phone, is provided with touch key on side, and most electronic equipment protective housing on market can only expose key through side opening, so that the side key of electronic equipment is not protected, and is worn out after long time use;And the protective housing with touch key on market is thicker on side, and most is metal key, so that user holding feeling is poor, and use experience is poor. UTILITY MODEL CONTENTS

[0003] To solve the technical problem that the touch key holding experience of the existing electronic equipment shell is poor, the utility model provides a kind of key assembly and protective housing.

[0004] The utility model solves technical problem's scheme is to provide a kind of key assembly, the key assembly includes flexible support frame, circuit board and glass panel, the installation slot is set on the flexible support frame one side, the flexible support frame is set in the installation slot bottom and is provided with through-hole, the circuit board is embedded in the through-hole, and both sides are exposed to the flexible support frame;The glass panel is embedded in the installation slot, and is connected with the touch key by resisting the circuit board.

[0005] Preferably, the flexible support frame further includes a connecting structure, the connecting structure is arranged at both ends of the flexible support frame and located outside the installation slot.

[0006] Preferably, a set of opposite surfaces are arranged on the flexible support frame and spaced apart from the connecting structure, and the edge of the bottom of the installation slot is at least partially flush with the edge of the surface.

[0007] Preferably, the thickness of the flexible support frame and the glass panel is between 1.0mm-1.5mm after overlapping arrangement.

[0008] Preferably, the flexible support frame and the circuit board are integrally formed by encapsulation molding;The glass panel is bonded on the flexible support frame and the circuit board.

[0009] Preferably, the through-hole is located at the center of the bottom of the installation slot.

[0010] Preferably, the area of the through-hole and the circuit board does not exceed the glass panel, and one side of the circuit board close to the glass panel is flush with the flexible support frame, and the other side exceeds the flexible support frame.

[0011] The utility model discloses a technical problem's still one scheme of providing a protective shell, including button subassembly and the body, install hole is set up on the body corresponding touch button, the button subassembly is located the install hole.

[0012] Preferably, the connecting structure is embedded on one side of the mounting hole close to the interior of the body, and the glass panel is exposed to the mounting hole.

[0013] Preferably, the thickness of the button subassembly is not more than the thickness of the body, and a gap is provided between the circuit board and the touch button.

[0014] Compared with the prior art, the button subassembly and the protective shell have the following advantages:

[0015] 1. The utility model discloses a button subassembly, which is thin and flexible, and can be controlled by touch or press. Specifically, the mounting groove is used to install the glass panel. After the glass panel is installed, the user can control the touch button on the electronic device by touching or pressing the glass panel. When the touch glass panel, the touch signal received by the glass panel is transmitted to the circuit board, and then the signal is processed and transmitted to the electronic device, so that the touch button on the electronic device can be controlled flexibly. At the same time, the touch button is protected, which can prevent dust and stains from entering the gap of the button and reduce the possibility of wear and tear of the touch button. When the glass panel is pressed, the flexible support frame moves under the drive of the glass panel, so that the glass panel can press the touch button through the flexible support frame. After pressing, the flexible support frame returns to its original position under the action of its flexibility. The glass panel has high aesthetic value and touch sensitivity, and can quickly and sensitively feedback. It can restore the feel of the touch button when the user holds the button subassembly, and is wear-resistant and can effectively prevent scratches during daily use, improving the user's holding experience. In addition, the button subassembly can be applied to the protective shell corresponding to the touch button, which is widely applicable and cost-effective.

[0016] 2. The utility model discloses a button subassembly, which is connected to the corresponding protective shell by the connecting structure, so that the button subassembly can be used as the button of the electronic device.

[0017] 3. The utility model discloses a button subassembly, the bottom of the mounting groove is flush with the surface edge at least in part, which can reduce the influence of the flexible support frame on the installation process and expose the mounting groove.

[0018] 4. The utility model provides a kind of key assembly, and the key assembly of relatively thin can make protective shell more light and thin as a whole, the touch of key is closer to electronic equipment original key, the feedback when pressing is more natural, sensitive, reduce the possibility of misoperation.

[0019] 5. The utility model provides a kind of key assembly, and the integrated structure of flexible support frame and circuit board makes the position of circuit board more stable, reduces the possibility that circuit board is separated from flexible support frame in the process of pressing flexible support frame.

[0020] 6. The utility model provides a kind of key assembly, and through hole is arranged at the bottom center of mounting groove, so that circuit board can be correspondingly arranged at the center of glass panel, to receive touch signal on glass panel more comprehensively and accurately.

[0021] 7. The utility model provides a kind of key assembly, and through hole and circuit board size control in the range covered by glass panel, to accurately transmit touch signal on glass panel, improve the accuracy of glass panel control operation.

[0022] 8. The utility model provides a kind of protective shell, and key assembly is installed on the body, and the body plays the role of protecting electronic equipment, while key assembly corresponds with touch key of electronic equipment, user can flexibly control touch key through key assembly, and use experience is improved through the thin characteristics of key assembly.

[0023] 9. The utility model provides a kind of protective shell, and connecting structure is embedded in the body inside, which helps to reinforce the connection relationship between key structure and body, and only glass panel part can be exposed, which is convenient for user to operate through glass panel.

[0024] 10. The utility model provides a kind of protective shell, and the thickness of key assembly does not exceed the thickness of body, which is convenient for user to control key assembly, and key assembly will not be too thick to affect the contact relationship with touch key;The gap between circuit board and touch key can make touch key not contact with circuit board in natural state, to avoid false touch to affect user experience.

DRAWING DESCRIPTION

[0025] Figure 1 It is a kind of key assembly structure schematic diagram provided by the utility model first embodiment.

[0026] Figure 2 It is a kind of key assembly explosion schematic diagram provided by the utility model first embodiment.

[0027] Figure 3 It is the explosion schematic diagram of key assembly, protective shell and electronic equipment provided by the utility model second embodiment.

[0028] Figure 4It is the second embodiment of the utility model provides the key assembly, the protective housing and electronic equipment profile schematic view.

[0029] Figure 5 It is the second embodiment of the utility model provides the key assembly and protective housing explosion schematic view.

[0030] The drawing mark explanation is as follows:

[0031] 1, key assembly;2, protective housing;3, electronic equipment;

[0032] 11, flexible support frame;12, circuit board;13, glass panel;21, body;31, touch key;

[0033] 111, mounting groove;112, through hole;113, connecting structure;114, surface;211, mounting hole.

CONCRETE IMPLEMENTING METHOD

[0034] In order to make the utility model purposes, technical scheme and advantages are more clear and obvious, the following is combined with the drawing and embodiment, and the utility model is further described in detail.It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0035] It should be noted that the terms "first" and "second" in the specification and claims of the utility model are used to distinguish different objects, not to describe a specific order.

[0036] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on another element or there can be a middle element.When an element is considered "connected" to another element, it can be directly connected to another element or there can be a middle element.The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0037] In the utility model, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings.These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0038] And, the above-mentioned partial terms, in addition to can be used to express the orientation or position relationship, possibly also be used to express other meanings, for example, the term "upper" in some cases can also be used to express a certain dependent relationship or connection relationship. For those of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0039] In addition, the terms "mounting", "setting", "provided with", "connection", "connected" should be broadly understood. For example, it can be fixed connection, detachable connection, or integral construction; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] Please refer to Figure 1 , Figure 2 and Figure 3 , the first embodiment of the present application provides a kind of key assembly 1, is installed on electronic equipment 3 protective shell 2, for controlling touch key 31 on electronic equipment 3, key assembly 1 includes flexible support frame 11, circuit board 12 and glass panel 13, installation slot 111 is arranged on the side of flexible support frame 11, flexible support frame 11 is opened through hole 112 at the bottom of installation slot 111, circuit board 12 is embedded in through hole 112, and both sides are exposed to flexible support frame 11;Glass panel 13 is embedded in installation slot 111, is exposed to protective shell 2, and is connected with touch key 31 by abutting circuit board 12.

[0041] It can be understood that the structure connected by the flexible support frame 11, the circuit board 12 and the glass panel 13 enables the user to flexibly perform touch / press operation, improving the holding experience of the user during use. Specifically, the mounting groove 111 is used to mount the glass panel 13, and after the glass panel 13 is mounted, the user controls the touch key 31 on the electronic device 3 by touching or pressing the exposed glass panel 13. When the touch glass panel 13, the touch signal received on the glass panel 13 is transmitted to the circuit board 12, and the circuit board 12 transmits the signal to the electronic device 3 after processing, thereby realizing flexible control of the touch key 31. At the same time, the glass panel 13 can protect the touch key 31, better prevent dust and stains from entering the gap of the touch key 31, and reduce the possibility of wear and tear of the surface of the touch key 31 due to external influences. When the glass panel 13 is pressed, the flexible support frame 11 moves under the drive of the glass panel 13, so that the glass panel 13 can resist and press the touch key 31 through the flexible support frame 11, and reset after pressing under the action of the touch key 31 and the flexible support frame 11, and restore the state of non-resisting the touch key 31. The glass panel 13 has high aesthetic and touch sensitivity, fast feedback sensitivity, can better restore the hand feeling of the touch key 31 when the user holds the key assembly 1, and is wear-resistant, which can effectively prevent scratches in daily use and improve the user's holding experience. In addition, the key assembly 1 can be applied to the shell of the electronic device 3 corresponding to the touch key 31, has strong universality, is widely applied, and saves cost.

[0042] Further, the flexible support frame 11 further comprises a connecting structure 113, which is arranged at both ends of the flexible support frame 11 and outside the mounting groove 111. The connecting structure 113 serves to connect the key assembly 1 to the corresponding shell, so that the key assembly 1 is arranged corresponding to the touch key 31.

[0043] Specifically, the flexible support frame 11 is in a strip shape, and the connecting structure 113 is symmetrically distributed at both ends of the flexible support frame 11. At the same time, the through hole 112 and the circuit board 12 are correspondingly arranged in a strip shape to better cooperate with the flexible support frame 11 and facilitate assembly.

[0044] It can be understood that the flexible support frame 11, as a support frame of the circuit board 12 and the glass panel 13, has a flexible feature that can better ensure the transmission of touch operation. When installed, the key assembly 1 is installed on the shell of the electronic device 3 through the connecting structure 113, improving the applicability and practicality of the key assembly 1.

[0045] In this embodiment, the flexible support frame 11 is composed of thermoplastic rubber. The thermoplastic rubber is easy to process, has good elasticity and softness, and after pressing the key assembly 1, the flexible support frame 11 resets under the action of the elastic force of the touch key 31 and the thermoplastic rubber, and is suitable for applications requiring soft support to more stably support the glass panel 13.

[0046] Further, a set of opposite surfaces 114 are arranged on the flexible support frame 11 and spaced from the connecting structure 113, and the bottom edge of the mounting groove 111 is at least partially flush with the edge of the surface 114, which facilitates reducing the influence of the flexible support frame 11 on the installation process when the key assembly 1 is installed, and exposes the mounting groove 111, so that the glass panel 13 is completely exposed, facilitating operation.

[0047] It can be understood that the through hole 112 is located at the center of the bottom of the mounting groove 111, so that the circuit board 12 can be correspondingly arranged at the center of the glass panel 13, so as to more comprehensively and accurately receive the touch signal on the glass panel 13.

[0048] Further, the flexible support frame 11 and the circuit board 12 are integrally formed by encapsulation, so that the circuit board 12 is tightly combined with the through hole 112, the position of the circuit board 12 is more stable, the possibility of the circuit board 12 being separated from the flexible support frame 11 during pressing the flexible support frame 11 is reduced, the overall strength and durability of the key assembly 1 are effectively improved, the assembly process is reduced, the production cycle is shortened, and the assembly cost is reduced.

[0049] Further, the area of the through hole 112 and the circuit board 12 does not exceed the area of the glass panel 13, and the size of the through hole 112 and the circuit board 12 is controlled within the range covered by the glass panel 13, so as to accurately transmit the touch signal on the glass panel 13 and improve the accuracy of the control operation of the glass panel 13.

[0050] It can be understood that the height of the mounting groove 111 is flush with or lower than the glass panel 13, so as to facilitate the user to quickly position the glass panel 13 and touch or press, that is, the thickness of the overall structure of the key assembly 1 is the thickness of the flexible support frame 11 / circuit board 12 plus the thickness of the glass panel 13, so that only the thickness of the flexible support frame 11 / circuit board 12 and the glass panel 13 is increased at the corresponding position of the touch key 31 of the electronic device 3, and therefore the key assembly 1 provided by the utility model has the characteristics of lightness and thinness.

[0051] In the embodiment, one side of the circuit board 12 close to the glass panel 13 is flush with the groove bottom of the mounting groove 111, and the other side exceeds the surface of the flexible support frame 11, that is, the thickness of the key assembly 1 is the thickness of the circuit board 12 and the glass panel 13. It can be understood that when the glass panel 13 is pressed, the glass panel 13 applies pressure to the flexible support frame 11, and the flexible support frame 11 drives the circuit board 12 to press the touch key 31. Since the area of the side of the circuit board 12 adjacent to the touch key 31 is smaller, the pressure applied to the touch key 31 is more accurate, and the accuracy of user operation is improved.

[0052] It should be noted that the capacitive sensing layer is arranged on the glass panel 13, when the user touches the glass panel 13, the circuit board 12 receives the touch signal of the user on the glass panel 13 through the capacitive sensing layer, and transmits to the electronic device 3 after processing, realizes the control to the touch key 31, and the glass panel 13 also has the advantages of beauty, durability and easy cleaning, improves the user experience.

[0053] Further, the glass panel 13 is assembled into the mounting groove 111 by dispensing, the uniform distribution and accurate position of the glue are ensured, so that the glass panel 13 is firmly pasted in the mounting groove 111, and the glass panel 13 can maintain the state of resisting the flexible support frame 11 and the circuit board 12, avoiding the influence of the glass panel 13 falling off on the user during use.

[0054] It should be noted that the thickness of the flexible support frame 11, the circuit board 12 and the glass panel 13 arranged in the overlapping manner is between 1.0mm-1.5mm, the thinner key assembly 1 can make the overall structure more thin and light, and the touch of the key assembly 1 is closer to the original touch key 31, the feedback when pressing is more natural and sensitive, and the possibility of misoperation is reduced.

[0055] Preferably, the thickness of the key assembly 1 is 1.2mm, so that the key assembly 1 can be applied to the side of the ultra-thin shell of the electronic device 3, can better cooperate with the touch key 31, and improve the user experience.

[0056] Please refer to Figures 1 to 5 The working principle of the key assembly 1 provided by the first embodiment of the utility model is as follows:

[0057] The key assembly 1 is arranged corresponding to the touch key 31, the user can directly press the key assembly 1, so that the part of the circuit board 12 beyond the surface of the flexible support frame 11 quickly and accurately contacts the touch key 31 and applies pressure, realizes the pressing of the touch key 31, and after pressing, the flexible support frame 11 drives the circuit board 12 and the glass panel 13 to reset, and restores to the state of non-resisting the key assembly 1 and the touch key 31; when the user touches the glass panel 13, the capacitive sensing layer on the glass panel 13 records the touch signal and transmits to the circuit board 12, the circuit board 12 transmits the touch signal to the electronic device 3, realizes the touch control to the touch key 31.

[0058] Please refer to Figure 2 、 Figure 3 and Figure 5The second embodiment of the utility model provides a protective shell 2, the protective shell 2 includes button assembly 1 and body 21, the body 21 is opened installation hole 211 corresponding touch button 31, button assembly 1 is located in installation hole 211.The body 21 plays the role of protecting electronic equipment 3, simultaneously, button assembly 1 and touch button 31 position correspond, and user can control touch button 31 flexibly through button assembly 1, and use experience is improved through the thin characteristics of button assembly 1.

[0059] Further, the connecting structure 113 is embedded on one side of the mounting hole 211 close to the inside of the body 21, and the glass panel 13 is exposed to the mounting hole 211.

[0060] It can be understood that the connecting structure 113 embedded in the body 21 inside helps to reinforce the connection relationship between the button assembly 1 and the body 21, and the surface 114 and the mounting hole 211 abut, so that the button assembly 1 can be tightly assembled in the mounting hole 211, prevent dust from falling, and only expose part of the glass panel 13, which is convenient for users to operate through the glass panel 13.

[0061] Please refer to Figure 3 , Figure 4 and Figure 5 , the thickness of the button assembly 1 does not exceed the thickness of the body 21, and a gap is provided between the circuit board 12 and the touch button 31. The thickness of the button assembly 1 does not exceed the thickness of the body 21, which is convenient for users to control the button assembly 1, and the button assembly 1 will not be too thick to affect the contact relationship with the touch button 31; The gap between the circuit board 12 and the touch button 31 can make the touch button 31 not contact the circuit board 12 in a natural state, avoiding false touch affecting user experience.

[0062] Preferably, the button assembly 1 is assembled into the upper mounting hole 211 by the point gluing process, so that the button assembly 1 retains the use experience of bare machine, reduces the thickness of the protective shell 2, increases the holding feeling, and improves the user experience.

[0063] Compared with the prior art, the utility model provides a button assembly and a protective shell, which has the following advantages:

[0064] 1. The utility model provides a kind of key assembly, the structure of flexible support frame, circuit board and glass panel connection, relatively thin key assembly is formed, so that user can flexibly touch / control / press operation;Specifically, mounting groove is used to install glass panel, after glass panel installation, user controls touch key on electronic equipment by touch or press glass panel;When touch glass panel, the touch signal received on glass panel is transmitted to circuit board, and circuit board is transmitted to electronic equipment after signal processing, to realize the flexible control of touch key on electronic equipment, while protecting touch key, better prevent dust and stain from entering key gap, reduce the possibility of touch key wear and break by outside;When press glass panel, flexible support frame moves under the drive of glass panel, so that glass panel can be pressed by flexible support frame and touch key, and reset under the action of flexible support frame after pressing, restore the state of non-resistance with touch key;Glass panel has higher aesthetic and touch sensitivity, feedback sensitive and fast, can better restore the feeling of touch key when user holds key assembly, and wear-resistant, can effectively prevent scratch in daily use, improve user holding experience;In addition, key assembly can be applied to the protective shell corresponding to touch key, strong universality, widely used, save cost.

[0065] 2. The utility model provides a kind of key assembly, connecting structure is played to connect key assembly to corresponding protective shell, so that key assembly is set to the key of corresponding electronic equipment.

[0066] 3. The utility model provides a kind of key assembly, the bottom of mounting groove and the structure edge outside the connecting structure on flexible support frame at least partial keep flush, facilitate when installing key assembly reduce the influence of flexible support frame to installation process, and expose support frame.

[0067] 4. The utility model provides a kind of key assembly, relatively thin key assembly can make protective shell whole more light and thin, the touch of key is closer to mobile phone original key, the feedback when pressing is more natural, sensitive, reduce the possibility of misoperation.

[0068] 5. The utility model provides a kind of key assembly, the integrated structure of flexible support frame and circuit board makes the position of circuit board more stable, reduce the possibility of circuit board disengaging from flexible support frame in the process of pressing flexible support frame.

[0069] 6. The utility model provides a kind of key assembly, through hole is set in the center of mounting groove bottom, so that circuit board can be correspondingly set in the center of glass panel, to receive more comprehensive and accurate touch signal on glass panel.

[0070] 7. The key assembly provided by the utility model, the size of the through hole and the circuit board is controlled within the range covered by the glass panel, so as to accurately transmit the touch signal on the glass panel and improve the accuracy of the control operation of the glass panel.

[0071] 8. The protective shell provided by the utility model, the key assembly is installed on the body, the body plays a role of protecting the electronic device, meanwhile, the key assembly corresponds to the touch key of the electronic device, the user can flexibly control the touch key through the key assembly, and the use experience is improved through the thin and light characteristics of the key assembly.

[0072] 9. The protective shell provided by the utility model, the connection structure is embedded in the interior of the body, which helps to reinforce the connection relationship between the key structure and the body, and only the glass panel part can be exposed, so that the user can operate through the glass panel.

[0073] 10. The protective shell provided by the utility model, the thickness of the key assembly does not exceed the thickness of the body, so that the user can control the key assembly, and the key assembly will not be too thick to affect the contact relationship with the key of the electronic device; the gap between the circuit board and the touch key can make the touch key not contact with the circuit board in the natural state, so as to avoid the influence of the false touch on the use experience of the user.

[0074] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, any modification, equivalent replacement and improvement within the principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A button assembly, mounted on a protective case of an electronic device, for controlling touch buttons on the electronic device, characterized in that: The button assembly includes a flexible support frame, a circuit board, and a glass panel. A mounting groove is provided on one side of the flexible support frame, and a through hole is formed at the bottom of the mounting groove. The circuit board is embedded in the through hole and exposed on both sides of the flexible support frame. The glass panel is embedded in the mounting groove, exposed outside the protective shell, and connected to the touch button by abutting against the circuit board.

2. The button assembly as described in claim 1, characterized in that: The flexible support frame also includes a connecting structure, which is disposed at both ends of the flexible support frame and located outside the mounting groove.

3. The button assembly as described in claim 2, characterized in that: A set of opposing surfaces are provided at intervals on the flexible support frame and the connecting structure, and the bottom edge of the mounting groove is at least partially flush with the edge of the surface.

4. The button assembly as described in claim 2, characterized in that: The thickness of the flexible support frame, the circuit board, and the glass panel after overlapping is between 1.0mm and 1.5mm.

5. The button assembly as described in claim 2, characterized in that: The flexible support frame and the circuit board are molded into an integral structure; the glass panel is bonded to the flexible support frame and the circuit board.

6. The button assembly as described in claim 2, characterized in that: The through hole is located at the center of the bottom of the mounting groove.

7. The button assembly as described in claim 2, characterized in that: The area of ​​the through hole and the circuit board does not exceed the area of ​​the glass panel, and the side of the circuit board closest to the glass panel is flush with the flexible support frame, while the other side extends beyond the flexible support frame.

8. A protective shell, characterized in that: The protective housing includes the button assembly as described in any one of claims 2-7, and further includes a body, on which mounting holes are formed corresponding to the touch buttons, and the button assembly is disposed in the mounting holes.

9. A protective shell as described in claim 8, characterized in that: The connecting structure is embedded in the mounting hole on the side near the interior of the body, and the glass panel is exposed outside the mounting hole.

10. A protective shell as described in claim 9, characterized in that: The thickness of the button assembly does not exceed the thickness of the body, and a gap is provided between the circuit board and the touch button.