Key module and electronic device

Abstract

The embodiments of the present application relate to the technical field of electronic devices. Provided are a key module and an electronic device. Keys have no play in the direction of width of the electronic device and cannot be flipped in the direction of length of the electronic device. The keys have no play in the direction of length and direction of thickness of the electronic device. Such a configuration method comprehensively solves the problem of loose key texture. In addition, the key module can be independently assembled, thus reducing the assembly difficulty. The key module comprises: a key bracket, wherein the key bracket comprises a key bracket body, and a first column and a second column that are arranged on the same face of the key bracket body, with connecting parts being arranged at end parts of both the first column and the second column; a key, wherein the key comprises a key body, an elastic ring, and a first hanging lug and a second hanging lug that are arranged at two ends of the key body; blocking members, wherein the blocking members can be connected to the connecting parts; and a first elastic member and a second elastic member that are respectively arranged on the first column and the second column.

Description

Key module and electronic device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 27, 2024, with application number 202410222383.0 and application name “A key module and electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electronic devices, and in particular to a key module and an electronic device. Background Art

[0003] As a fundamental interactive component of electronic devices, buttons are a crucial window into human-computer interaction. Their quality directly impacts the user experience. The design of buttons directly determines their reliability, feel, and refinement.

[0004] However, in related technologies, the keys are fixed to the middle frame by using the gap between the keys and the middle frame. This often results in the keys being misaligned and wobbling in all directions relative to the middle frame. The keys also feel loose and make unusual noises. Summary of the Invention

[0005] In order to solve the above technical problems, the present application provides a key module and electronic device, which can solve the problems of loose key texture and abnormal noise, and at the same time has the advantage of being easy to assemble.

[0006] In the first aspect, the embodiment of the present application provides a key module, which can be assembled on a middle frame, the middle frame including a first surface and a key window, the key window having an inner wall, the key module including: a key bracket, the key bracket including a key bracket body, and a first column and a second column arranged on the same surface of the key bracket body, the ends of the first column and the second column are both provided with a connecting portion; a key, the key including a key body, an elastic ring and a first hanging ear and a second hanging ear arranged at both ends of the key body, the elastic ring is arranged around the key body, the elastic ring and the key body are both assembled on the key window, the elastic ring is used To fill the gap between the button body and the inner wall, the first hanging ear is provided with a first through hole, and the first through hole can be sleeved on the first column; the second hanging ear is provided with a second through hole, and the second through hole can be sleeved on the second column; the blocking member can be connected to the connecting part, and is used to prevent the first hanging ear from escaping from the first column, and prevent the second hanging ear from escaping from the second column; the first elastic member is arranged between the first hanging ear and the button bracket body, and is used to press the first hanging ear onto the first surface; the second elastic member is arranged between the second hanging ear and the button bracket body, and is used to press the second hanging ear onto the first surface.

[0007] Under the compression of the first and second elastic members, the key has no dead space in the width direction of the electronic device and cannot be flipped along the length direction of the electronic device. Due to the space occupied by the elastic ring, the key has no dead space in the length and thickness directions of the electronic device. This arrangement completely solves the problem of loose key texture, eliminates the possibility of abnormal noise caused by looseness, and improves the user experience. At the same time, the blocking member that can be connected to the connection part can prevent the key from separating from the key bracket, so the key module can be assembled independently, reducing the assembly difficulty.

[0008] In some possible implementations, the elastic ring and the inner wall are interference-fitted, thereby achieving good damping and positioning effects.

[0009] In some possible implementations, the elastic ring is integral with the inner wall. The friction between the elastic ring and the inner wall is small, which helps to reduce the force required to press the button.

[0010] In some possible implementations, the elastic ring includes a protrusion and a recess.

[0011] In some possible implementations, a plurality of protrusions and a plurality of recesses are alternately arranged.

[0012] In some possible implementations, the elastic ring is made of liquid silicone.

[0013] In some possible implementations, the key body includes an annular groove, and the elastic ring portion is disposed in the annular groove.

[0014] In some possible implementations, the widths of the first hanging ear and the second hanging ear are both wider than the width of the key body.

[0015] In some possible implementations, a first plane parallel to the length and width directions of the middle frame divides the key into a first portion and a second portion, the first portion including a first edge of the first hanging ear, a first edge of the second hanging ear, and a first edge of the key body, and the second portion including a second edge of the first hanging ear, a second edge of the second hanging ear, and a second edge of the key body;

[0016] Among them, the distance between the straight line where the first edge of the first hanging ear is located and the first plane, and the distance between the straight line where the first edge of the second hanging ear is located and the first plane, are both greater than the distance between the straight line where the first edge of the key body is located and the first plane; the distance between the straight line where the second edge of the first hanging ear is located and the first plane, and the distance between the straight line where the second edge of the second hanging ear is located and the first plane, are both greater than the distance between the straight line where the second edge of the key body is located and the first plane.

[0017] In some possible implementations, the first elastic member includes a first spring, which is sleeved on the first column; the second elastic member includes a second spring, which is sleeved on the second column.

[0018] In some possible implementations, the connecting portion includes a first annular groove and a second annular groove, the first annular groove is provided at the end of the first column, and the second annular groove is provided at the end of the second column.

[0019] In some possible implementations, the blocking member includes a retaining spring, and the two retaining springs are respectively engaged with the first annular retaining groove and the second annular retaining groove.

[0020] In some possible implementations, a switch structure is also included, and the button also includes an extension column. The switch structure is arranged on the side of the button bracket body facing the button body, and the extension column is arranged on the side of the button body facing the switch structure. The extension column and the switch structure are arranged opposite to each other.

[0021] In some possible implementations, the button bracket further includes a first fixing portion and a second fixing portion fixed to the button bracket body, the first fixing portion is provided with a first fixing hole, the second fixing portion is provided with a second fixing hole, and the button bracket is fixed to the middle frame through the first fixing hole and the second fixing hole.

[0022] In some possible implementations, the opening directions of the first fixing hole and the second fixing hole are parallel to the thickness direction of the middle frame.

[0023] In some possible implementations, the opening directions of the first fixing hole and the second fixing hole are parallel to the width direction of the middle frame.

[0024] In a second aspect, an embodiment of the present application provides an electronic device comprising any one of the above-mentioned key modules. The electronic device has the corresponding beneficial effects of the above-mentioned key modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic structural diagram of a mobile phone provided by the related art;

[0026] FIG2 is a schematic structural diagram of an existing key fixing assembly provided by the related art;

[0027] FIG3 is a schematic diagram of an assembly of an existing key fixing assembly provided by the related art;

[0028] FIG4 is a schematic structural diagram of a mobile phone provided in an embodiment of the present application;

[0029] FIG5 is a schematic diagram of a partial structure of a middle frame provided in an embodiment of the present application;

[0030] FIG6 is a schematic structural diagram of a flexible circuit board provided in an embodiment of the present application;

[0031] FIG7 is a schematic structural diagram of a key provided in an embodiment of the present application;

[0032] FIG8 is a schematic structural diagram of an elastic ring provided in an embodiment of the present application;

[0033] FIG9 is a schematic structural diagram of a button bracket provided in an embodiment of the present application;

[0034] FIG10 is a schematic structural diagram of a first column provided in an embodiment of the present application;

[0035] FIG11 is a schematic structural diagram of a clamping spring and a first column provided in an embodiment of the present application;

[0036] FIG12 is a structural diagram of a key module during assembly according to an embodiment of the present application;

[0037] FIG13 is another structural diagram of a key module assembly process provided by an embodiment of the present application;

[0038] FIG14 is another structural diagram of a key provided in an embodiment of the present application;

[0039] FIG15 is a cross-sectional view taken along the AA direction provided in an embodiment of the present application;

[0040] FIG16 is a schematic diagram of an assembly of a button bracket provided in an embodiment of the present application;

[0041] FIG17 is a schematic diagram of the assembly of another key bracket provided in an embodiment of the present application;

[0042] FIG18 is a schematic diagram of the assembly of a key module in a mobile phone provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0045] The terms "upper," "lower," "left," and "right" used herein to indicate directions are intended only to clarify the embodiments and to describe one possible arrangement or configuration of components. They are not intended to limit the relationships between components or their orientation.

[0046] In the description and claims of the embodiments of this application, the terms "first" and "second" are used to distinguish different objects, rather than to describe a specific order of objects. For example, the terms "first target object" and "second target object" are used to distinguish different objects, rather than to describe a specific order of objects.

[0047] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0048] In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more. For example, "multiple processing units" means two or more processing units; "multiple systems" means two or more systems.

[0049] Figure 1 is a schematic diagram of the structure of a mobile phone provided by the related art. (See Figure 1.) To facilitate the clear description of the subsequent structural features and their positional relationships, the positional relationships of the various structures within the mobile phone are defined using the X-axis, Y-axis, and Z-axis directions. The X-axis represents the width of the mobile phone, the Y-axis represents the length of the mobile phone, and the Z-axis represents the thickness of the mobile phone. Figure 2 is a schematic diagram of the structure of a conventional key fixing assembly provided by the related art. Figure 3 is a schematic diagram of the assembly of a conventional key fixing assembly provided by the related art. (See Figures 2 and 3.) The mobile phone includes an existing middle frame 01 and an existing key fixing assembly 02 disposed within the existing middle frame 01. The existing key fixing assembly 02 includes an existing key body 021, which is assembled within a key opening in the existing middle frame 01. To ensure that the existing key body 021 fits within the key opening, a clearance fit is provided between the existing key body 021 and the key opening. Furthermore, hooks 022 are provided at both ends of the existing key body 021 to prevent the existing key body 021 from falling out of the key opening. When a user uses a mobile phone, due to the gap between the existing button body 021 and the button window, when the button is pressed, the existing button body 021 will move in the Y-axis and Z-axis directions. Due to the gap between the hanging ear 022 and the existing middle frame 01, the existing button body 021 will also move in the X-axis direction. In addition, considering that the width of the hanging ear 022 is not only narrow, but there is also a gap between the hanging ear 022 and the existing middle frame 01, the hanging ear 022 can rotate around the Y-axis by a certain angle when the button is pressed or the phone is shaken. Such buttons have problems of virtual position and shaking. The button texture is loose and there is an abnormal sound. It gives users a poor user experience.

[0050] In order to solve the above problems, an embodiment of the present application provides an electronic device. The electronic device provided in the embodiment of the present application can be a mobile phone, a tablet computer, a personal digital assistant (PDA), a car computer, a smart wearable device, a smart home device, etc. The embodiment of the present application does not specifically limit the specific form of the above electronic devices. Figure 4 is a structural schematic diagram of a mobile phone provided in the embodiment of the present application, see Figure 4. For the convenience of explanation, the following description is taken as an example of the electronic device being a mobile phone 100. Among them, in order to facilitate a clear description of the subsequent structural features and the positional relationship of the structural features, the positional relationship of each structure in the mobile phone 100 is specified in the X-axis direction, the Y-axis direction and the Z-axis direction. Among them, the X-axis direction is the width direction of the mobile phone 100, the Y-axis direction is the length direction of the mobile phone 100, and the Z-axis direction is the thickness direction of the mobile phone 100.

[0051] As shown in FIG2 , the mobile phone 100 includes a middle frame 10, a rear cover 20, a display panel 30, and a key module 40. The rear cover 20 and the display panel 30 are arranged opposite to each other, and the middle frame 10 is located between the rear cover 20 and the display panel 30.

[0052] Figure 5 is a schematic diagram of a partial structure of a middle frame provided in an embodiment of the present application, see Figure 5. In conjunction with Figure 4, the middle frame 10, the rear shell 20 and the display screen 30 can form a receiving cavity. The middle frame 10 includes a first surface 101 facing the receiving cavity. The receiving cavity is provided with a mainboard, a battery, and a retaining wall (not shown in the figure) for fixing the battery. A processor and a memory are provided on the mainboard. The memory is used to store computer program code. The computer program code includes computer instructions. The processor is used to call computer instructions to enable the mobile phone 100 to perform corresponding operations.

[0053] The material of the rear cover 20 may include, for example, opaque materials such as plastic, plain leather, and fiberglass; or may include translucent materials such as glass. The present embodiment does not limit the material of the rear cover 20.

[0054] The display panel 30 includes, for example, a liquid crystal display (LCD) panel, an organic light emitting diode (OLED) display panel, and an LED display panel. The LED display panel includes, for example, a micro-LED display panel and a mini-LED display panel. The embodiment of the present application does not limit the type of the display panel 30.

[0055] The button module 40 can be a volume button for adjusting the volume, or a power button for waking up and turning off the screen, etc., and this embodiment of the application does not make any specific limitations on this.

[0056] FIG6 is a schematic diagram of the structure of a flexible circuit board provided in an embodiment of the present application. See FIG6 . The mobile phone 100 also includes a flexible circuit board 50. A key module 40 is electrically connected to the mainboard via the flexible circuit board 50. For example, the key module 40 is a volume key for adjusting the volume. When the key module 40 is pressed, it generates an electrical signal, which is transmitted to the mainboard processor via the flexible circuit board 50. The processor adjusts the volume of the mobile phone 100 based on the electrical signal.

[0057] The specific structures of the middle frame 10 and the key module 40 are described below.

[0058] Continuing to refer to Figure 5, the middle frame 10 also includes a key window 102, and the key window 102 has an inner wall 1021. Figure 7 is a structural schematic diagram of a key provided in an embodiment of the present application, see Figure 7. The key module 40 includes a key 401, and the key 401 includes a key body 4011. An elastic ring 4012 is provided around the key body 4011, and the key body 4011 provided with the elastic ring 4012 can be assembled into the key window 102. The elastic ring 4012 cooperates with the inner wall 1021 of the key window 102, and the cooperation method can include interference fit or zero fit, that is, the elastic ring 4012 and the key window 102 fit each other, but the two do not press each other. The key body 4011 and the elastic ring 4012 can be manufactured by liquid material injection molding process to form an integrated component. Of course, there are many ways to obtain the key body 4011 and the elastic ring 4012, and they can also be obtained in the following way. For example, the button body 4011 can be provided with an annular groove, and the maximum thickness of the elastic ring 4012 can be higher than the depth of the annular groove. By setting the elastic ring 4012 in the annular groove, the position of the elastic ring 4012 relative to the button body 4011 can be limited, thereby fixing the elastic ring 4012 more firmly on the button body 4011. Alternatively, the elastic ring 4012 can be directly sleeved on the smooth button body 4011, eliminating the need for processes such as providing an annular groove. The matching method of the elastic ring 4012 and the button body 4011 can be determined according to actual needs. Figure 8 is a schematic structural diagram of an elastic ring provided in an embodiment of the present application, see Figure 8. A protrusion 40121 and a recessed portion 40122 can be provided on the surface of the annular groove facing the inner wall 1021 of the button window 102. The raised portion 40121 can be provided with an interference fit with the inner wall 1021 of the key window 102. When the key body 4011 with the elastic ring 4012 is assembled into the key window 102, the inner wall 1021 squeezes the raised portion 40121 of the elastic ring 4012. The squeezed redundant elastic ring material can be compressed and accommodated in the recessed portion 40122 of the elastic ring 4012. The elastic ring 4012, with its raised portion 40121 and recessed portion 40122, can automatically adjust the interference fit between the elastic ring 4012 and the inner wall 1021, preventing excessive interference between the elastic ring 4012 and the inner wall 1021 due to factors such as manufacturing errors. The hardness of the elastic ring 4012 and the interference fit between the elastic ring 4012 and the inner wall 1021 can be determined based on actual needs and are not limited in this embodiment of the present application. The material of the elastic ring 4012 can be rubber, liquid silicone, or any other elastic material. Under the action of the elastic ring 4012 squeezing and occupying the position, the key 401 cannot move freely in the Y-axis direction and the Z-axis direction, thereby preventing the key 401 from having a virtual position in the Y-axis direction and the Z-axis direction, and thus preventing the key from being loose due to the virtual position of the key in the Y-axis direction and the Z-axis direction.

[0059] FIG9 is a schematic diagram of the structure of a button bracket provided in an embodiment of the present application. The button module 40 also includes a button bracket 402, which includes a button bracket body 4021. The button bracket body 4021 has a first column 4022 and a second column 4023 on the side facing the button 401. Continuing with FIG7 , the button 401 also includes a first mounting lug 4013 and a second mounting lug 4014 disposed at either end of the button body 4011. The first mounting lug 4013 has a first through-hole 40131 that fits over the first column 4022. The second mounting lug 4014 has a second through-hole 40141 that fits over the second column 4023. The button module 40 also includes a first spring 403, a second spring 404, and two retaining springs 406. FIG10 is a schematic diagram of the structure of a first column provided in an embodiment of the present application. The end of the first column 4022 is provided with a first annular retaining groove 40221. Similarly, a second annular groove is also provided at the end of the second column 4023. Figure 11 is a structural schematic diagram of a retaining spring and a first column provided in an embodiment of the present application, see Figure 11. Taking the first column 4022 as an example, when assembling the retaining spring 406, the opening of the retaining spring 406 can be directed toward the first column 4022, against the first annular groove 40221, and the retaining spring 406 can be pushed into the first annular groove 40221, so that the retaining spring 406 is retained at the end of the first column 4022. The first spring 403 is sleeved on the first column 4022 and is located between the first hanging ear 4013 and the button bracket body 4021. The second spring 404 is sleeved on the second column 4023 and is located between the second hanging ear 4014 and the button bracket body 4021. Figure 12 is a structural schematic diagram of a button module assembly process provided in an embodiment of the present application, see Figure 12. When assembling the key module 40, the first spring 403 and the second spring 404 can be first assembled to the first column 4022 and the second column 4023, respectively. The first column 4022 and the second column 4023 can then be inserted into the first through hole 40131 and the second through hole 40141, respectively, and the key 401 can be assembled with the key bracket 40. Figure 13 is another structural schematic diagram of the key module assembly process provided in an embodiment of the present application. See Figure 13. Then, the key 401 is pressed toward the key bracket 40, so that the first annular groove 40221 and the second annular groove are exposed on the side of the key 401 away from the key bracket 40. At this time, the retaining spring 406 can be installed in the first annular groove 40221 and the second annular groove, thereby preventing the first and second hanging ears 4013 and 4014 from falling off the first column 4022 and the second column 4023. This arrangement allows the key module 40 to be assembled as an independent component, facilitating the subsequent assembly of the key module 40 to the middle frame 10.In other embodiments, other blocking members besides the retaining spring 406 can be connected to the ends of the first and second columns 4022, 4023 to prevent the first and second mounting ears 4013, 4014 from falling off the first and second columns 4022, 4023. The first and second annular slots 40221 and 4024 can also be replaced with any other connection for connecting the blocking member. When the key module 40 is assembled, even when the key 401 is not pressed, the first and second springs 403, 404 can apply pressure to the key 401. This pressure helps secure the key 401 in the X-axis direction, preventing it from being loosened due to a loose position in the X-axis direction. Because the first and second mounting ears 4013, 4014 can be attached to the first surface 101 of the middle frame 10, the key 401 can be prevented from rotating along the Y or Z axis when the phone 100 is shaken. The first pillar 4022 and the second pillar 4023 may directly contact the first surface 101 of the middle frame 10 , or two recesses may be provided on the first surface 101 of the middle frame 10 , with the first pillar 4022 and the second pillar 4023 respectively contacting the two recesses.

[0060] Of course, the first spring 403 may also be a first elastic rubber sleeve, or any other first elastic member that can replace the first spring 403. The second spring 404 may also be a second elastic rubber sleeve, or any other second elastic member that can replace the second spring 404. The embodiments of the present invention are not limited to the specific type of elastic member, as long as it does not violate the scope of the invention.

[0061] The Y-axis direction is the length direction of the key 401, and the Z-axis direction is the width direction of the key 401. The widths of the first hanging ear 4013 and the second hanging ear 4014 can be set to be wider than the width of the key body 4011. Since the widths of the first hanging ear 4013 and the second hanging ear 4014 are widened, when they are matched with the first surface 101 of the middle frame 10, there is a larger matching surface between the two, so the key 401 is not easy to flip. Figure 14 is another structural schematic diagram of a key provided in an embodiment of the present application, see Figure 14. For example, a first plane 1 parallel to the X-axis and the Y-axis divides the key 401 into a first part and a second part. The first part includes the first edge L11 of the first hanging ear, the first edge L12 of the second hanging ear and the first edge L13 of the key body, and the second part includes the second edge L21 of the first hanging ear, the second edge L22 of the second hanging ear and the second edge L23 of the key body. The distance S11 between the line along the first edge L11 of the first hanging ear and the first plane, and the distance S12 between the line along the first edge L12 of the second hanging ear and the first plane, are both greater than the distance S13 between the line along the first edge L13 of the key body and the first plane. The distance S21 between the line along the second edge L21 of the first hanging ear and the first plane, and the distance S22 between the line along the second edge L22 of the second hanging ear and the first plane, are both greater than the distance S23 between the line along the second edge L23 of the key body and the first plane. When a user presses a key, the force exerted on key 401 may be biased toward the first or second portion of key 401. In this case, due to the combined force of the user's pressing force and the elastic force of the spring, only the edges of the first hanging ear 4013 and the second hanging ear 4014 of key 401 contact the first surface 101 of the middle frame 10, forming a support point. Assuming the travel of key 401 remains constant, the farther the support point is from the key body 4011, the smaller the angle of deflection of key 401. In other words, this setting suppresses the flipping of the button when it is pressed, improving the user experience.

[0062] Figure 15 is a cross-sectional view taken along line AA of an embodiment of the present application. The key module 40 also includes a switch structure 405, and the key 401 also includes an extension column 4015. The switch structure 405 is disposed on the side of the key support body 4021 facing the key body 4011, and the extension column 4015 is disposed on the side of the key body 4011 facing the switch structure 405. The extension column 4015 can be a columnar structure extending along the X-axis. The extension column 4015 is disposed opposite the switch structure 405. This means that the extension column 4015 overlaps the switch structure 405 in a direction parallel to the plane of the Y-axis and the Z-axis. In other words, when the key 401 is pressed, the extension column 4015 of the key 401 applies a force to the switch structure 405 in the X-axis direction. This generates an electrical signal, which is transmitted to the mainboard via the flexible printed circuit board 50. When the button 401 is released, the extension column 4015 is lifted up, and the switch structure 405 returns to the unpressed state.

[0063] Figure 16 is a schematic diagram of the assembly of a key bracket provided in an embodiment of the present application. See Figure 16 . To secure the key bracket body 4021 to the middle frame 10, the key bracket 402 further includes a first fixing portion 4024 and a second fixing portion 4025, respectively located at either end of the key bracket body 4021. The first fixing portion 4024 defines a first fixing hole 40241, and the second fixing portion 4025 defines a second fixing hole 40251. The positions of the first fixing hole 40241 and the second fixing hole 40251 align with the positions of corresponding screw holes on the middle frame 10. The key bracket body 4021 can be secured to the middle frame 10 by inserting screws through the first fixing hole 40241 and the second fixing hole 40251 and screwing them into the corresponding screw holes. The orientation of the first fixing hole 40241 and the second fixing hole 40251 can be determined based on actual needs. For example, the orientation of the first fixing hole 40241 and the second fixing hole 40251 can be along the X-axis. This arrangement allows the first fixing hole 40241 and the second fixing hole 40251 to be aligned with the first surface 101 of the middle frame 10. In the X-axis direction, the first fixing portion 4024 and the second fixing portion 4025 only occupy a space of the accommodating cavity equivalent to their thickness, which is more space-saving. Figure 17 is an assembly diagram of another key bracket provided in an embodiment of the present application. See Figure 17. The opening direction of the first fixing hole 40241 and the second fixing hole 40251 can also be in the Z-axis direction. This arrangement is more suitable for automated assembly equipment and facilitates automated assembly.

[0064] Scene 1

[0065] FIG18 is a schematic diagram of the assembly of a key module in a mobile phone provided in an embodiment of the present application, see FIG18 . A mobile phone is provided, comprising a middle frame 10 and a first key module 41 and a second key module 42 disposed on the middle frame 10. The two key modules share a key bracket 402 and a flexible circuit board 50. The first key module 41 comprises two extension columns 4015 and two switch structures 405 corresponding to the extension columns 4015, and the two extension columns 4015 are respectively disposed near the two ends of the first key module 41. The second key module 42 comprises an extension column 4015 and a switch structure 405 corresponding to the extension column 4015.

[0066] During assembly, the assembled key module 40 is placed into the space of the accommodating cavity, and the key body 4011 is inserted into the key window 102. The ends of the first column 4022 and the second column 4023 are brought into contact with the first surface 101 of the middle frame 10. Screws are then driven into the first fixing hole 40241 and the second fixing hole 40251 using a screw machine or manually to complete the assembly.

[0067] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A key module, characterized in that: The key module can be assembled in a middle frame, the middle frame includes a first surface and a key window, the key window has an inner wall, and the key module includes: A key bracket, comprising a key bracket body, and a first column and a second column arranged on the same surface of the key bracket body, wherein the ends of the first column and the second column are both provided with a connecting portion; A key, the key comprising a key body, an elastic ring, and a first hanging ear and a second hanging ear provided at both ends of the key body, the elastic ring being arranged around the key body, the elastic ring and the key body being assembled in the key window, the elastic ring being used to fill the gap between the key body and the inner wall, the first hanging ear being provided with a first through hole, the first through hole being capable of being sleeved on the first column, the second hanging ear being provided with a second through hole, the second through hole being capable of being sleeved on the second column; a blocking member, which can be connected to the connecting portion and is used to prevent the first hanging ear from falling off the first column and prevent the second hanging ear from falling off the second column; a first elastic member, disposed between the first hanging ear and the button bracket body, and configured to press the first hanging ear against the first surface; A second elastic member is provided between the second hanging ear and the button bracket body, and is used for pressing the second hanging ear onto the first surface.

2. The key module according to claim 1, characterized in that: The elastic ring is interference fit with the inner wall.

3. The key module according to claim 1, characterized in that: The elastic ring is matched with the inner wall.

4. The key module according to claim 1, wherein: The elastic ring includes a convex portion and a concave portion.

5. The key module according to claim 4, characterized in that: The plurality of protrusions and the plurality of recesses are arranged alternately.

6. The key module according to claim 1, characterized in that: The elastic ring is made of liquid silicone.

7. The key module according to claim 1, characterized in that: The button body includes an annular groove, and the elastic ring portion is arranged in the annular groove.

8. The key module according to claim 1, wherein: The widths of the first hanging ear and the second hanging ear are both wider than the width of the button body.

9. The key module according to claim 1, characterized in that: A first plane parallel to the length and width directions of the middle frame divides the key into a first part and a second part, the first part including a first edge of the first hanging ear, a first edge of the second hanging ear, and a first edge of the key body, and the second part including a second edge of the first hanging ear, a second edge of the second hanging ear, and a second edge of the key body; Among them, the distance between the straight line where the first edge of the first hanging ear is located and the first plane, and the distance between the straight line where the first edge of the second hanging ear is located and the first plane are both greater than the distance between the straight line where the first edge of the key body is located and the first plane; the distance between the straight line where the second edge of the first hanging ear is located and the first plane, and the distance between the straight line where the second edge of the second hanging ear is located and the first plane are both greater than the distance between the straight line where the second edge of the key body is located and the first plane.

10. The key module according to claim 1, characterized in that: The first elastic member includes a first spring, and the first spring is sleeved on the first column; the second elastic member includes a second spring, and the second spring is sleeved on the second column.

11. The key module according to claim 1, characterized in that: The connecting portion includes a first annular groove and a second annular groove, wherein the first annular groove is provided at the end of the first column, and the second annular groove is provided at the end of the second column.

12. The key module according to claim 11, characterized in that: The blocking member includes a clamping spring, and the two clamping springs are respectively clamped to the first annular clamping groove and the second annular clamping groove.

13. The key module according to claim 1, wherein: It also includes a switch structure, and the button also includes an extension column. The switch structure is arranged on the side of the button bracket body facing the button body, and the extension column is arranged on the side of the button body facing the switch structure. The extension column is arranged opposite to the switch structure.

14. The key module according to claim 1, wherein: The button bracket further includes a first fixing portion and a second fixing portion fixed to the button bracket body, the first fixing portion is provided with a first fixing hole, the second fixing portion is provided with a second fixing hole, and the button bracket is fixed to the middle frame through the first fixing hole and the second fixing hole.

15. The key module according to claim 14, characterized in that: The opening directions of the first fixing hole and the second fixing hole are parallel to the thickness direction of the middle frame.

16. The key module according to claim 14, characterized in that: The opening directions of the first fixing hole and the second fixing hole are parallel to the width direction of the middle frame.

17. An electronic device, characterized in that: The invention comprises the key module according to any one of claims 1 to 14.

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