Button module and electronic device

Abstract

The present application discloses a key module and an electronic device. The key module includes a first key and a second key; a bracket and a link assembly. The first key and the second key are respectively arranged at two ends of the bracket, and the first key and the second key are rotationally connected to the bracket through the link assembly; a first dome switch is correspondingly arranged for the first key, a second dome switch is correspondingly arranged for the second key, and a third dome switch is correspondingly arranged for the bracket; when one of the first key and the second key is pressed, the first dome switch or the second dome switch is triggered, and the key module triggers a first preset function; when the first key and the second key are pressed simultaneously, the first key and the second key drive the bracket to move through the link assembly, the third dome switch is triggered, and the key module triggers a second preset function. When the electronic device of the present application realizes diversified functions, there is no need to additionally open holes to arrange keys, ensuring its sealing performance, and the second preset function can be triggered by pressing the first key and the second key simultaneously, making the operation more convenient.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to a button module and an electronic device. Background Art

[0002] With the intelligent development of electronic devices, users have higher and higher requirements for the functions of electronic devices. In related technologies, in order for an electronic device to achieve diversified functions, usually each function requires a corresponding software button or a corresponding physical button is provided outside the housing, and then by triggering the corresponding button to trigger these functions. However, the triggering operation of software buttons is relatively cumbersome, and adding physical buttons requires opening holes in the housing, resulting in poor sealing of the electronic device. It can be seen that existing electronic devices often have difficulty meeting the requirements of high sealing and convenient operation while achieving diversified functions. Summary of the Invention

[0003] This application aims to provide a button module and an electronic device to solve the technical problem that existing electronic devices often have difficulty meeting the requirements of high sealing and convenient operation while achieving the mute function.

[0004] To solve the above technical problem, this application is implemented as follows:

[0005] In a first aspect, an embodiment of this application provides a button module, including:

[0006] A first button and a second button;

[0007] A bracket and a link assembly, the first button and the second button are respectively arranged at two ends of the bracket, and the first button and the second button are rotatably connected to the bracket through the link assembly;

[0008] A first dome switch is correspondingly arranged for the first button, a second dome switch is correspondingly arranged for the second button, and a third dome switch is correspondingly arranged for the bracket;

[0009] When one of the first button and the second button is pressed, the first dome switch or the second dome switch is triggered, and the button module triggers a first preset function;

[0010] When the first button and the second button are pressed simultaneously, the first button and the second button drive the bracket to move through the link assembly, the third dome switch is triggered, and the button module triggers a second preset function.

[0011] In a second aspect, an embodiment of this application provides an electronic device, including the button module described in the first aspect.

[0012] In an embodiment of the present application, the button module may include a first button and a second button; a bracket and a link assembly. The first button and the second button are respectively disposed at two ends of the bracket, and the first button and the second button are rotatably connected to the bracket through the link assembly; a first dome switch is correspondingly disposed for the first button, a second dome switch is correspondingly disposed for the second button, and a third dome switch is correspondingly disposed for the bracket; when one of the first button and the second button is pressed, the first dome switch or the second dome switch is triggered, and the button module triggers a first preset function; when the first button and the second button are pressed simultaneously, the first button and the second button drive the bracket to move through the link assembly, and the third dome switch is triggered, and the button module triggers a second preset function. In this way, the bracket is correspondingly provided with the third dome switch related to the second preset function. When the first button and the second button are pressed simultaneously, the third dome switch is triggered by the bracket, so that the second preset function can be realized without additionally opening holes for arranging buttons for the second preset function, thereby reducing the dust and water resistance pressure of the electronic device and ensuring the sealing performance of the electronic device. At the same time, when the electronic device realizes the second preset function, the user only needs to press the first button and the second button simultaneously, and to cancel the second preset function, the user only needs to press the first button and the second button simultaneously again, which is more convenient to operate.

[0013] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0015] Figure 1 is a schematic structural diagram of a button module provided by an embodiment of the present application;

[0016] Figure 2 is Figure 1 a schematic diagram of the first button of the button module in being pressed;

[0017] Figure 3 is Figure 1 a schematic diagram of the first button and the second button of the button module in being pressed simultaneously;

[0018] Figure 4 is a partial schematic diagram of a link assembly in the button module provided by an embodiment of the present application;

[0019] Figure 5 is another partial schematic diagram of a link assembly in the button module provided by an embodiment of the present application;

[0020] Figure 6 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

[0021] Reference numerals:

[0022] 1. First button; 11. First dome switch

[0023] 2. Second button; 21. Second dome switch

[0024] 3. Bracket; 31. Third dome switch; 32. Slide groove

[0025] 4. Link assembly; 41. Pin; 42. Connector; 43. Carrier

[0026] 5. Limiting member

[0027] 100. Housing Detailed implementation manners

[0028] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0029] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0030] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In the related art, when users need electronic devices to realize various functions, such as a one-button mute function in scenes such as meetings and watching movies, the common mute methods are as follows:

[0033] First, press and hold the volume down button until the volume is adjusted to 0;

[0034] The second is to realize it through the software function of the electronic device, for example, you can click the "mute" control in the toolbar interface to realize the mute function of the electronic device;

[0035] Third, a physical button is added to the housing of the electronic device, and the mute function of the electronic device is controlled by the physical button.

[0036] However, the inventors found that the above three methods all have certain defects: Method 1 adjusts the volume to 0, which can usually only mute the audio playback, and cannot mute the entire electronic device. For example, when there is an incoming call, the electronic device will still make a sound. Methods 2 and 3 can both achieve the full application mute function of the electronic device, but when operating Method 2, users often need to open the toolbar interface first, and then click the "mute" control. When canceling the mute function, they need to repeat the operation, which is cumbersome. Method 3 requires additional holes to be opened on the shell for placing the additional physical buttons, which increases the waterproof and dustproof pressure of the electronic device, resulting in poor sealing of the electronic device.

[0037] Based on this, an embodiment of the present application provides a key module and an electronic device to solve the above technical problems.

[0038] Let's combine Figures 1 to 6 A key module according to an embodiment of the present application is described.

[0039] See also Figures 1 to 3, the key module provided by the embodiment of the present application may include a first key 1 and a second key 2; a bracket 3 and a link assembly 4. The first key 1 and the second key 2 are respectively arranged at both ends of the bracket 3, and the first key 1 and the second key 2 are rotatably connected to the bracket 3 through the link assembly 4. A first dome switch 11 is correspondingly arranged for the first key 1, a second dome switch 21 is correspondingly arranged for the second key 2, and a third dome switch 31 is correspondingly arranged for the bracket 3. When one of the first key 1 and the second key 2 is pressed, the first dome switch 11 or the second dome switch 21 is triggered, and the key module triggers a first preset function. When the first key 1 and the second key 2 are pressed simultaneously, the first key 1 and the second key 2 drive the bracket 3 to move through the link assembly 4, the third dome switch 31 is triggered, and the key module triggers a second preset function.

[0040] As Figure 1 shown, the key module may include a first key 1, a second key 2, a bracket 3, and a link assembly 4. Exemplarily, the first key 1 may be rotatably connected to the first end of the bracket 3 through the link assembly 4, and the second key 2 may be rotatably connected to the second end of the bracket 3 through the link assembly 4. Wherein, a first dome switch 11 may be correspondingly arranged for the first key 1, and a second dome switch 21 may be correspondingly arranged for the second key 2. In some examples, the first dome switch 11 and the second dome switch 21 may be respectively arranged below the first key 1 and the second key 2, and there is a gap between them and the first key 1 and the second key 2. In other examples, the first dome switch 11 and the second dome switch 21 may also be respectively arranged below the first end and the second end of the bracket 3, and there is a gap between them and the first end and the second end.

[0041] As Figure 2 shown, it can be understood that when the first key 1 is pressed, the first key 1 moves downward, which can trigger the first dome switch 11, so that the key module triggers the first preset function corresponding to the first dome switch 11. Similarly, when the second key 2 is pressed, the second key 2 moves downward, which can trigger the second dome switch 21, so that the key module triggers the first preset function corresponding to the second dome switch 21.

[0042] For example, the first key 1 and the second key 2 may be volume keys, and the first preset function may be an increase or decrease in volume function. When the first key 1 is pressed, the first dome switch 11 is triggered, and the key module can trigger the function of increasing the volume. When the second key 2 is pressed, the second dome switch 21 is triggered, and the key module can trigger the function of decreasing the volume.

[0043] Please refer to Figures 1 to 3, the bracket 3 may be provided with a third pot piece 31 correspondingly. For example, the third pot piece 31 may be provided on the side of the bracket 3 away from the first button 1 and the second button 2, and there is a gap between the third pot piece 31 and the bracket 3. In a normal state (i.e., the first button 1 and the second button 2 are not pressed at the same time), the bracket 3 and the third pot piece 31 are not in contact. Figure 3 As shown, when the first button 1 and the second button 2 are pressed at the same time, the bracket 3 can be moved toward the third pot piece 31 driven by the first button 1 and the second button 2, and abut against the third pot piece 31. At this time, the third pot piece 31 is triggered, and the button module triggers the second preset function.

[0044] It is understandable that when one of the first button 1 and the second button 2 is pressed and the other is not pressed, the bracket 3 can also move, but the third pot piece 31 will not be triggered, that is, the button module triggers the first preset function and does not trigger the second preset function.

[0045] In other words, when the user presses one of the first button 1 and the second button 2, the button module triggers the first preset function; when the user presses the first button 1 and the second button 2 at the same time, the button module triggers the second preset function. The triggering of various functions can be realized without adding new buttons.

[0046] It can also be understood that when the user needs to release the second preset function, the user can press the first button 1 and the second button 2 at the same time again, so that the bracket 3 can trigger the third pot piece 31 again, and the button module can release the second preset function.

[0047] In an embodiment of the present application, the button module may include a third pot piece 31 corresponding to the bracket 3 and related to the second preset function. When the first button 1 and the second button 2 are pressed at the same time, the third pot piece 31 is triggered by the bracket 3, so that the second preset function can be realized, and there is no need to open additional holes and arrange buttons for the second preset function, thereby reducing the dust and water resistance pressure of the electronic device and ensuring the sealing of the electronic device. At the same time, when the electronic device realizes the second preset function, the user only needs to press the first button 1 and the second button 2 at the same time, and to cancel the second preset function, it only needs to press the first button 1 and the second button 2 at the same time again, which is more convenient to operate.

[0048] Optionally, see Figure 4 In some embodiments, two ends of the bracket 3 are provided with slide grooves 32, the connecting rod assembly 4 includes a latch 41, the latch 41 is movably arranged in the slide groove 32, and the first button 1 and the second button 2 are rotatably connected to the bracket 3 through the cooperation of the latch 41 and the slide groove 32.

[0049] In this embodiment, if Figure 4As shown, the bracket 3 may be provided with a slide groove 32, and one end of the connecting rod assembly 4 may be connected to the bracket 3 by the cooperation of the latch 41 and the slide groove 32. When the first button 1 or the second button 2 is pressed, the bracket 3 moves under the action of the pressing force, and the bracket 3 may rotate around the latch 41, and the latch 41 slides relative to the slide groove 32. In this way, the relative rotation, i.e., sliding, of the latch 41 and the slide groove 32 effectively offsets the horizontal displacement of the first button 1 or the second button 2 and the bracket 3, thereby further ensuring the position accuracy of the first button 1 and the second button 2.

[0050] Optionally, see Figure 1 In some embodiments, the first pot piece 11 is arranged on the side of the first button 1 facing the bracket 3, and the first pot piece 11 is arranged opposite to the first button 1; the second pot piece 21 is arranged on the side of the second button 2 facing the bracket 3, and the second pot piece 21 is arranged opposite to the second button 2.

[0051] In this embodiment, the first pot piece 11 is opposite to the first button 1, and when the first button 1 is not pressed, there may be a gap between the first pot piece 11 and the first button 1, and when the first button 1 is pressed, the first button 1 moves toward the bracket and can abut against the first pot piece 11, and the first pot piece 11 is triggered. Similarly, the second pot piece 21 is opposite to the second button 2, and when the second button 2 is not pressed, there may be a gap between the second pot piece 21 and the second button 2, and when the second button 2 is pressed, the second button 2 moves toward the bracket and can abut against the second pot piece 21, and the second pot piece 21 is triggered.

[0052] In this way, the first pot piece 11 is arranged opposite to the first button 1, and the second pot piece 21 is arranged opposite to the second button 2, which can ensure that when one of the first button 1 and the second button 2 is pressed, the first pot piece 11 or the second pot piece 21 can be accurately triggered, thereby improving the accuracy of the button module triggering the first preset function.

[0053] In some examples, the third pot piece 31 may include a first sub-pot piece and a second sub-pot piece, wherein the first sub-pot piece and the second sub-pot piece may be located on a side of the bracket 3 away from the first button 1 and the second button 2 , and correspond to two ends of the bracket 3 respectively.

[0054] In other words, the first sub-dome sheet can correspond to the first button 1. When the first button 1 is pressed, the bracket 3 can be driven by the first button 1 to abut against the first sub-dome sheet to trigger the first sub-dome sheet. The second sub-dome sheet can correspond to the second button 2. When the second button 2 is pressed, the bracket 3 can be driven by the second button 2 to abut against the second sub-dome sheet to trigger the second sub-dome sheet. Among them, when the first sub-dome sheet or the second sub-dome sheet is triggered alone, the button module will not trigger the second preset function. Only when the first sub-dome sheet and the second sub-dome sheet are triggered simultaneously, the button module will trigger the second preset function.

[0055] In this way, pressing the first button 1 and the second button 2 simultaneously can trigger the first sub-dome sheet and the second sub-dome sheet simultaneously, thereby enabling the button module to trigger the second preset function, which is convenient to operate. At the same time, there is no need to open additional holes in the electronic device, ensuring the sealing performance of the electronic device.

[0056] Optionally, in some embodiments, the third dome sheet 31 is disposed on the central axis of the bracket 3.

[0057] As Figure 1 shown, the third dome sheet 31 can be disposed at the central position of the bracket 3. Exemplarily, the first button 1 and the second button 2 can be respectively connected to both ends of the bracket 3, that is, the first button 1 and the second button 2 can be symmetrically disposed along the central axis of the bracket 3. At this time, the third dome sheet 31 can be located on the central axis of the bracket 3.

[0058] In this way, it can be ensured that whether there is contact between the third dome sheet 31 and the bracket 3 is equally affected by the first button 1 and the second button 2. Therefore, the risk of accidental touch between the bracket 3 and the third dome sheet 31 after the bracket 3 moves when the first button 1 or the second button 2 is pressed can be reduced, thereby effectively ensuring the accuracy of the button assembly.

[0059] Optionally, please refer to Figure 1 、 Figure 2 , in some embodiments, the button module may further include:

[0060] A limiting member 5, the limiting member 5 is disposed on one side of the bracket 3 facing the third dome sheet 31, and the distance between the limiting member 5 and the bracket 3 is greater than the distance between the third dome sheet 31 and the bracket 3.

[0061] In order to further avoid the phenomenon of accidental touch between the bracket 3 and the third dome sheet 31 when the first button 1 or the second button 2 is pressed, the button module may further include a plurality of limiting members 5. As Figure 1 and Figure 2As shown, the gap between the third dome sheet 31 and the bracket 3 can be smaller than the gap between the limiting member 5 and the bracket 3. In this way, when the first button 1 and the second button 2 are pressed simultaneously, when the bracket 3 moves towards the third dome sheet 31 driven by the first button 1 and the second button 2, it can first come into contact with the third dome sheet 31, thereby being able to smoothly trigger the third dome sheet 31 and ensuring that the button module triggers the second preset function.

[0062] Optionally, please refer to Figure 1 , Figure 2 , in some embodiments, the number of the limiting members 5 is at least two, and at least two limiting members 5 are distributed on both sides of the third dome sheet 31. When one of the first button 1 and the second button 2 is pressed, the first button 1 or the second button 2 drives the bracket 3 to move to contact the limiting member 5 through the link assembly 4.

[0063] In this embodiment, the button module may include multiple limiting members 5. As Figure 1 shown, the number of the limiting members 5 can be two, and the two limiting members 5 can be respectively located on both sides of the third dome sheet 31. As Figure 2 shown, when the first button 1 is pressed and the second button 2 is not pressed, at this time, one end of the bracket 3 connected to the first button 1 can move to contact the limiting member 5, and the bracket 3 is in an inclined state with the limiting member 5 as the fulcrum, and there is a gap between the bracket 3 and the third dome sheet 31, so that the bracket 3 will not trigger the third dome sheet 31, that is, the button module will not trigger the second preset function.

[0064] In this embodiment, the limiting member 5 can effectively limit the displacement of the bracket 3, thereby avoiding the phenomenon that when the first button 1 or the second button 2 is pressed, the bracket 3 moves excessively and touches the third dome sheet 31 by mistake, and further improving the accuracy of the button module.

[0065] Optionally, in some embodiments, the link assembly 4 may include a connecting member 42 and a bearing member 43; one end of the connecting member 42 is rotatably connected to the bracket 3; the bearing member 43 is connected to the other end of the connecting member 42, and the bearing member 43 and the connecting member 42 form an obtuse angle, and the first button 1 and the second button 2 are arranged on the bearing member 43.

[0066] As Figure 5 shown, the link assembly 4 may include a connecting member 42 and a bearing member 43 that are connected to each other and form an obtuse angle, wherein the bearing member 43 is used to bear the first button 1 and the second button 2, that is, the first button 1 and the second button 2 can be fixedly arranged on the bearing member 43 by welding, gluing, screwing, etc. One end of the connecting member 42 can be rotatably connected to the bracket 3, so as to realize that the first button 1 and the second button 2 can rotate relative to the bracket 3.

[0067] It can be understood that when the button module is assembled in an electronic device, the first button 1 and the second button 2 are usually placed in the fixed hole positions of the housing of the electronic device. When the first button 1 and the second button 2 are pressed, relative displacement occurs between the first button 1, the second button 2 and the bracket 3 in the horizontal direction, which in turn causes a certain deviation between the positions of the first button 1, the second button 2 and the positions of the fixed hole positions. In this embodiment, the displacement influence between the first button 1, the second button 2 and the bracket 3 can be offset by the obtuse angle formed between the carrier 43 and the connecting member 42, and the rotational connection between the connecting member 42 and the bracket 3, so as to ensure the position accuracy of the first button 1 and the second button 2.

[0068] In some examples, the connecting member 42 can be connected to the carrier 43 by means such as screwing, welding, etc. In other examples, the connecting member 42 can also be formed by extending from the carrier 43 towards the bracket 3, that is, the connecting member 42 and the carrier 43 can be integrally formed, further ensuring the connection strength of the link assembly 4.

[0069] In some examples, as Figure 5 shown, through holes can be formed in the carrier 43, and the first button 1 and the second button 2 can include fitting portions, and the fitting portions are connected to the through holes in an interference fit manner. In this way, the assembly between the first button 1, the second button 2 and the bracket 3 is simpler, and it is convenient for maintenance and disassembly.

[0070] As Figure 6 shown, an embodiment of the present application further provides an electronic device, and the electronic device can include the above-mentioned button module.

[0071] It can be understood that the electronic device can include devices such as mobile phones, laptop computers, electronic watches, learning machines, e-books, etc. The electronic device can be assembled with the above-mentioned button module. In this way, when the electronic device realizes diversified functions, there is no need to additionally open holes to arrange buttons, ensuring its sealing performance, and the second preset function can be triggered by pressing the first button and the second button simultaneously, making the operation more convenient.

[0072] Optionally, please refer to Figure 6 , in some embodiments, the electronic device can further include a housing 100. First button holes and second button holes are formed in the housing 100. The button module is installed in the housing 100, and the first button 1 is exposed from the first button hole, and the second button 2 is exposed from the second button hole. In this way, the user can press the first button 1 exposed from the first button hole and / or the second button 2 exposed from the second button hole on the housing 100, and the structure is simple and the operation is convenient.

[0073] Optionally, in some embodiments, the first preset function may be a function of increasing volume or decreasing volume, and the second preset function may be a mute function. It can be understood that the first button 1 and the second button 2 may be volume buttons, where one of the first button 1 and the second button 2 is used to control the function of increasing volume, and the other is used to control the function of decreasing volume. For example, when the first button 1 is pressed, the first dome switch 11 can be triggered, and at this time the button module triggers the function of increasing volume; when the second button 2 is pressed, the second dome switch 21 can be triggered, and at this time the button module triggers the function of decreasing volume. When the first button 1 and the second button 2 are pressed simultaneously, the third dome switch 31 can be triggered, and at this time the button module triggers the mute function.

[0074] In this way, the one-key mute function of the electronic device can be realized by pressing two volume buttons simultaneously, which is convenient to operate. At the same time, there is no need to additionally open holes and add buttons for the mute function, so as to reduce the dust and water resistance pressure of the electronic device and ensure the sealing performance of the electronic device.

[0075] Other components of the electronic device according to the embodiments of the present application, such as functional modules such as a camera module and a speaker module, and operations are known to those of ordinary skill in the art and will not be described in detail here.

[0076] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A key module, characterized in that, Comprising: A first button and a second button; A bracket and a link assembly, wherein the first button and the second button are respectively arranged at two ends of the bracket, and the first button and the second button are rotatably connected to the bracket through the link assembly; A first dome switch is correspondingly arranged on the first button, a second dome switch is correspondingly arranged on the second button, and a third dome switch is correspondingly arranged on the bracket; When one of the first button and the second button is pressed, the first dome switch or the second dome switch is triggered, and the button module triggers a first preset function; When the first button and the second button are pressed simultaneously, the first button and the second button drive the bracket to move through the link assembly, the third dome switch is triggered, and the button module triggers a second preset function; Wherein, chutes are arranged at two ends of the bracket, the link assembly includes a pin, the pin is movably arranged in the chute, and the first button and the second button are rotatably connected to the bracket through the cooperation of the pin and the chute. When the first button or the second button is pressed, the bracket moves under the action of the pressing force, the bracket rotates around the pin, and the pin slides relative to the chute.

2. The key module according to claim 1, wherein The first dome switch is arranged on the side of the first button facing the bracket, and the first dome switch is arranged opposite to the first button; the second dome switch is arranged on the side of the second button facing the bracket, and the second dome switch is arranged opposite to the second button.

3. The key module according to claim 1, wherein The third dome switch is arranged on the central axis of the bracket.

4. The key module according to claim 1, wherein Further comprising: A limiting member, the limiting member is arranged on the side of the bracket facing the third dome switch, and the distance between the limiting member and the bracket is greater than the distance between the third dome switch and the bracket.

5. The key module according to claim 4, wherein The number of the limiting members is at least two, and the at least two limiting members are distributed on both sides of the third dome switch. When one of the first button and the second button is pressed, the first button or the second button drives the bracket to move through the link assembly until it abuts against the limiting member.

6. The key module according to claim 1, wherein The link assembly includes: A connecting member, one end of the connecting member is rotatably connected to the bracket; A bearing member, the bearing member is connected to the other end of the connecting member, the bearing member and the connecting member form an obtuse angle, and the first button and the second button are arranged on the bearing member.

7. An electronic device, characterized in that, Including the button module according to any one of claims 1 to 6.

8. The electronic device according to claim 7, wherein The electronic device further includes a housing, a first button hole and a second button hole are formed in the housing, the button module is installed in the housing, and the first button is exposed from the first button hole, and the second button is exposed from the second button hole.

9. The electronic device according to claim 7, wherein The first preset function is a function of increasing the volume or decreasing the volume, and the second preset function is a mute function.

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