Key fixing structure and electronic equipment

Abstract

The invention provides a key fixing structure which is suitable for electronic equipment. The key fixing structure comprises a key, a middle frame and an FPC. The key comprises a pressing body and a hanging lug connected to the pressing body, and the hanging lug protrudes out of one side of the pressing body and is bent to form a bent part. The middle frame is provided with an installation groove used for installing the key, the key is installed in the installation groove, one end of the key extends into the middle frame in the installation groove, and one side, away from the hanging lug, of the pressing body protrudes out of the installation groove to be pressed. The FPC is arranged in the middle frame and comprises a metal sheet and a substrate which are bonded with each other, the substrate is provided with a contact matched with the key, the metal sheet is provided with a blocking piece in a protruding mode, the blocking piece is flexibly bent and can be arranged on the side, close to the pressing body, of the bent part, and one side of the blocking piece protrudes out of the bent part and abuts against the middle frame. The invention provides the electronic equipment with the key fixing structure.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a key fixing structure and electronic equipment. Background Art

[0002] Mobile terminals such as mobile phones and tablets have become an indispensable part of people's lives and work. People are using more and more mobile terminals such as mobile phones and tablets, and the update iteration of mobile terminals such as mobile phones and tablets is also getting faster and faster. With the advancement of technology, mobile terminals such as mobile phones and tablets are becoming more and more intelligent, and the buttons are gradually simplified from the previous multiple buttons. Most of the current mobile terminals such as mobile phones and tablets only retain the power button and the volume adjustment button.

[0003] At present, mid-to-high-end mobile phones generally use an integrated middle frame. When assembling the buttons, the buttons are assembled from the outside to the inside and then fixed by a latch. Specifically, after the button FPC is assembled in the button slot of the middle frame, the button is inserted into the button hole of the middle frame. In order to ensure the smooth insertion of the button, the size of the button hole needs to be larger than the button, and there is a risk of the button falling out. In order to fix the button in the middle frame, a hanging ear is provided on the button, and the size of the button hole is also larger than the size of the hanging ear. The hanging ear is used to assist in fixing the button. Generally, the latch is installed and inserted between the hanging ear and the middle frame to block the hanging ear to prevent the button from falling out of the button hole. The button hanging ear and the latch are generally injection molded, and due to the width requirements of the whole machine, the thickness of the two generally does not exceed 0.7mm, so when the dimensional accuracy is slightly poor, it will affect the pressing feel of the button, or cause the button to protrude less. Limited by the production accuracy problem, it is also easy to make the cooperation between the button hanging ear and the latch unstable, and often there are problems such as poor button pressing feel or uneven button protrusion. On the other hand, the pins used to fix the key hanging ears need to be processed separately, which increases the production cost and assembly cost.

[0004] Therefore, it is necessary to provide a key fixing structure with small size fluctuation, good key feel and low production cost. Summary of the invention

[0005] The object of the present invention is to provide a key fixing structure with small size fluctuation, good key feel and low production cost.

[0006] Another object of the present invention is to provide an electronic device with good key feel and low key cost.

[0007] To achieve the above object, the present invention provides a key fixing structure suitable for electronic equipment, comprising:

[0008] The button comprises a pressing body and a hanging ear connected to the pressing body, wherein the hanging ear protrudes from one side of the pressing body and is bent to form a bending portion;

[0009] The middle frame is provided with an installation slot for installing the button, the button is installed in the installation slot and one end of the button extends into the middle frame in the installation slot, and a side of the pressing body away from the hanging ear protrudes out of the installation slot for pressing;

[0010] The FPC is arranged in the middle frame and includes a metal sheet and a substrate bonded to each other. The substrate is provided with contacts cooperating with the keys. A blocking piece is protrudingly provided on the metal sheet. The blocking piece is flexibly bent and can be placed on a side of the bending portion close to the pressing body, and one side of the blocking piece protrudes from the bending portion and abuts against the middle frame.

[0011] Compared with the prior art, the key fixing structure of the present invention includes a key, a middle frame and an FPC. The key includes a pressing body for pressing, and a hanging ear connected to the pressing body. The hanging ear is used to cooperate with the structure in the middle frame to install the pressing body on the middle frame according to a certain position, so that the pressing body can be operated to touch the internal FPC to start the corresponding function. Specifically, the hanging ear protrudes from one side of the pressing body, and one end of the hanging ear is bent to form a bending portion. A mounting groove for installing the key is provided on the middle frame, the key is installed in the mounting groove, and one end of the key extends into the middle frame in the mounting groove so that the key can be positioned and the key can be matched with the FPC. In addition, one side of the pressing body away from the hanging ear protrudes out of the mounting groove for pressing. The FPC is arranged in the middle frame and electrically connected to the circuit structure in the device to realize its corresponding function. The FPC includes a metal sheet and a substrate bonded to each other, and a contact that cooperates with the key is arranged on the substrate. Pressing the key to press the contact can connect the contact, thereby realizing the corresponding function. When the force applied by the key to the contact disappears, the contact can be elastically reset and drive the key to reset to the initial position. Among them, a baffle is protruding on the metal sheet, and the structure and thickness of the baffle are consistent with the metal sheet. The baffle can be flexibly bent and can be placed on the side of the bending part close to the pressing body, and one side of the baffle protrudes from the bending part and abuts against the middle frame. It can be understood that the baffle can limit the hanging ear to prevent the key from detaching from the middle frame. The baffle protrudes from the metal sheet, has a stable structure, is fixedly installed, and has a fixed thickness, which can effectively avoid the size fluctuation when the key and the latch are matched. If the key is fixed by a fixing part, the fixing part will have the risk of displacement, and the key and the fixing part are both injection molded, and the dimensional accuracy of the molding will have deviations, which is easy to affect the pressing feel. The baffle in the present invention has a stable thickness, and only the size of the key needs to be guaranteed. The baffle is used for limiting, which effectively avoids the key feel and protrusion problems caused by size problems. On the other hand, there is no need to form a fixing part separately, which saves the production cost and assembly cost of the fixing part, and effectively reduces the cost. The key fixing structure of the present invention has a simple and stable structure, small size fluctuation, good key feel and effectively reduces production costs.

[0012] Preferably, a hollow space is formed between the pressing body and the bending portion to form a receiving groove, and the blocking piece is located in the receiving groove.

[0013] Preferably, the blocking sheet can be elastically movable relative to the metal sheet and always has a tendency to be placed in the accommodating groove.

[0014] Preferably, the blocking sheet and the metal sheet are an integral structure.

[0015] Preferably, both ends of the pressing body are provided with ears, both ears are flush with the pressing body in the length direction, or both ears are reduced inward in the length direction of the pressing body, or at least one ear is flush with the pressing body or reduced inward in the length direction of the pressing body.

[0016] Preferably, a through hole is provided in the installation groove for the hanging ear to extend into the middle frame.

[0017] Preferably, a pressing portion for pressing the contact is provided on the button, and the pressing portion extends into the middle frame through the through hole.

[0018] Preferably, the middle frame and the button matching area have the same thickness, and both hanging ears are engaged with the baffle.

[0019] Preferably, in the area where the middle frame cooperates with the button, the thickness of one side is greater than the thickness of the other side, one hanging ear is engaged with the blocking piece, and the other hanging ear is engaged with the middle frame.

[0020] To achieve the above another object, the present invention further provides an electronic device, including a device body and the above key fixing structure, wherein the key fixing structure is arranged in the device body.

[0021] Compared with the prior art, the electronic device of the present invention has a key fixing structure, so the key installation structure on the electronic device is more stable, the key feel is better, and the production cost and assembly cost of the key are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0023] Figure 1 It is a structural diagram of a key fixing structure provided by an embodiment of the present invention.

[0024] Figure 2 yes Figure 1 Partial cross-sectional view of the middle button fixing structure.

[0025] Figure 3 yes Figure 1 Structural diagram of the middle button and FPC.

[0026] Figure 4 yes Figure 3 Partial structural diagram of the middle button and FPC.

[0027] Figure 5 yes Figure 1 The structure diagram of the middle button.

[0028] Figure 6 yes Figure 1 Structural diagram of the middle frame.

[0029] Figure 7 yes Figure 6 Structural diagram from another angle.

[0030] Figure 8 yes Figure 1 Structural diagram of FPC.

[0031] Description of reference numerals:

[0032] 100. Button fixing structure;

[0033] 10. button; 11. pressing body; 12. hanging ear; 120. connecting end; 121. bending part; 122. receiving groove; 13. pressing part;

[0034] 20. middle frame; 21. mounting cavity; 22. mounting groove; 23. through hole; 24. first engaging portion; 25. second engaging portion;

[0035] 30. FPC; 31. Metal sheet; 32. Substrate; 33. Baffle; 331. Material stopper; 34. Contact. DETAILED DESCRIPTION

[0036] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0037] See also Figures 1 to 4The present invention provides a key fixing structure 100, which is suitable for electronic devices, and the electronic devices can be mobile terminals such as mobile phones, tablets, reading pens, and learning machines. The key fixing structure 100 includes a key 10, a middle frame 20, and an FPC 30. The existing keys 10 are fixed in the middle frame 20 by separate fixings, and the fixings require molding costs and installation costs. In addition, since the molding of the keys 10 and the fixings are both injection molding, there may be dimensional errors, which can easily affect the installation effect of the keys 10 and the pressing experience of the keys 10. The present invention saves molding costs and installation costs by omitting the fixings and setting a baffle 33 on the FPC 30, and can better reduce dimensional fluctuations, so that the keys 10 feel better. Specifically, the button 10 includes a pressing body 11 and a hanging ear 12 connected to the pressing body 11, the hanging ear 12 protrudes from one side of the pressing body 11, and one end of the hanging ear 12 is bent to form a bending portion 121, and the bending portion 121 can be engaged with other structures in the middle frame 20 to position and install the entire button 10 on the middle frame 20. In addition, the middle frame 20 is provided with a mounting groove 22 for mounting the button 10, and the button 10 is mounted in the mounting groove 22 and one end of the button 10 extends into the middle frame 20 in the mounting groove 22 to cooperate with the middle frame 20 and the FPC 30. One side of the pressing body 11 away from the hanging ear 12 protrudes out of the mounting groove 22 for pressing. On the other hand, the FPC 30 is arranged in the middle frame 20, including a metal sheet 31 and a substrate 32 bonded to each other. The substrate 32 is provided with a contact 34 that cooperates with the button 10. The pressing body 11 is operated to make the pressing portion 13 act on the contact 34, so that the contact 34 is turned on, thereby realizing the corresponding function. Among them, a baffle 33 is protrudingly provided on the metal sheet 31, and the baffle 33 can be flexibly bent so as to be able to be bent to cooperate with the hanging ear 12 on the button 10. The baffle 33 after bending can be placed on the side of the bending portion 121 close to the pressing body 11, and one side of the baffle 33 protrudes out of the bending portion 121 and abuts against the middle frame 20. The baffle 33 can play a limiting role to prevent the hanging ear 12 from detaching from the middle frame 20, so that the button 10 can be stably installed in the installation slot 22 of the middle frame 20.

[0038] Compared with the prior art, the key fixing structure 100 of the present invention includes a key 10, a middle frame 20 and an FPC 30. The key 10 includes a pressing body 11 for pressing, and a hanging ear 12 connected to the pressing body 11. The hanging ear 12 is used to cooperate with the structure in the middle frame 20 to install the pressing body 11 on the middle frame 20 according to a certain position, so that the pressing body 11 can be operated to touch the internal FPC 30 to start the corresponding function. Specifically, the hanging ear 12 protrudes from one side of the pressing body 11, and one end of the hanging ear 12 is bent to form a bending portion 121. The middle frame 20 is provided with a mounting groove 22 for mounting the key 10, the key 10 is mounted in the mounting groove 22, and one end of the key 10 extends into the middle frame 20 in the mounting groove 22 so that the key 10 can be positioned and the key 10 can be matched with the FPC 30. In addition, the side of the pressing body 11 away from the hanging ear 12 protrudes out of the mounting groove 22 for pressing. The FPC 30 is arranged in the middle frame 20 and is electrically connected to the circuit structure in the device to realize its corresponding function. The FPC 30 includes a metal sheet 31 and a substrate 32 bonded to each other. A contact 34 cooperating with the key 10 is arranged on the substrate 32. The key 10 is pressed to press the contact 34 so that the contact 34 can be connected, thereby realizing the corresponding function. When the force applied by the key 10 to the contact 34 disappears, the contact 34 can be elastically reset and drive the key 10 to reset to the initial position. Among them, a baffle 33 is protrudingly arranged on the metal sheet 31. The structure and thickness of the baffle 33 are consistent with those of the metal sheet 31. The baffle 33 can be flexibly bent and can be placed on the side of the bending portion 121 close to the pressing body 11, and one side of the baffle 33 protrudes out of the bending portion 121 and abuts against the middle frame 20. It can be understood that the baffle 33 can limit the hanging ear 12 to prevent the key 10 from detaching from the middle frame 20. The baffle 33 protrudes from the metal sheet 31, has a stable structure, is fixedly installed, and has a fixed thickness, which can effectively avoid the size fluctuation when the key 10 is matched with the latch. If the key 10 is fixed by a fixing part, the fixing part will be at risk of displacement, and the key 10 and the fixing part are both injection molded, and the dimensional accuracy of the molding will have deviations, which can easily affect the pressing feel. The baffle 33 in the present invention has a stable thickness, and only needs to ensure the size of the key 10. The baffle 33 is used for limiting, which effectively avoids the feel and protrusion problems of the key 10 caused by size problems. On the other hand, there is no need to form a fixing part separately, which saves the production cost and assembly cost of the fixing part, and effectively reduces the cost. The key fixing structure 100 of the present invention has a simple and stable structure, small size fluctuation, a good feel of the key 10, and effectively reduces the production cost.

[0039] See also Figures 2 to 5In some optional embodiments, a hollowed-out groove 122 is formed between the pressing body 11 and the bending portion 121, and the blocking piece 33 is located in the groove 122. It can be understood that the hook 12 includes a connecting end 120 and a bending portion 121, the connecting end 120 is connected to the pressing body 11, and the bending portion 121 is bent to form a structure that can be mutually engaged with the blocking piece 33, and the cooperation is stable. Among them, the accommodating groove 122 is formed between the bending portion 121 and the pressing body 11, so that the bending portion 121 can be engaged with the blocking piece 33 or the middle frame 20.

[0040] See also Figures 2 to 4 and Figure 8 In some optional embodiments, the baffle 33 and the metal sheet 31 are an integral structure. The baffle 33 is a part of the metal sheet 31, and the baffle 33 can elastically move relative to the metal sheet 31 and always has a tendency to be placed in the accommodating groove 122. Exemplarily, the metal sheet 31 is a steel sheet, which can be used for conduction, etc. The steel sheet is not only structurally stable, but also can move elastically within a certain range. The baffle 33 protruding from the metal sheet 31 can be elastically bent to a suitable angle to form a material blocking portion 331, so as to better position the ear 12. In addition, the baffle 33 can move elastically within a certain range, which can make it more convenient to disassemble and assemble the button 10.

[0041] See also Figures 1 to 5In some optional embodiments, both ends of the pressing body 11 are provided with hanging ears 12, and the specific number of the hanging ears 12 can be set according to the actual installation needs. In some embodiments, the two hanging ears 12 are flush with the pressing body 11 in the length direction, so that the entire key 10 can be easily installed on the middle frame 20. At the same time, the hanging ears 12 on both sides of the pressing body 11 are limited by the baffle 33. In other embodiments, the two hanging ears 12 are reduced inwardly in the length direction of the pressing body 11, that is, the two hanging ears 12 do not protrude from the pressing body 11 in the length direction of the pressing body 11, so that the entire key 10 can be easily installed on the middle frame 20, and the installation is quick and convenient. Similarly, the hanging ears 12 on both sides of the pressing body 11 are also limited by the baffle 33. In some other embodiments, at least one hanging ear 12 is flush with the pressing body 11 or reduced inwardly in the length direction of the pressing body 11. That is, at least one of the two hanging ears 12 does not protrude from the pressing body 11 in the length direction of the pressing body 11, and the hanging ear 12 can be flush with the pressing body 11 or shorter than the pressing body 11 in length. The hanging ear 12 on the other side can protrude from the pressing body 11. During installation, it can be installed at an angle, and the long hanging ear 12 is installed first, so that the long hanging ear 12 is clamped on the second clamping portion 25 of the middle frame 20, and the second clamping portion 25 is located on one side of a through hole 23. Then install the hanging ear 12 at the short end, and the hanging ear 12 at the short end is clamped on the first clamping portion 24 of the middle frame 20 through the blocking piece 33, and the first clamping portion 24 is located on one side of the other through hole 23. The bending direction of the hanging ear 12 can also be set according to actual conditions. In this embodiment, the hanging ear 12 is bent outward. Specifically, the blocking portion 331 of the blocking sheet 33 is blocked between the through hole 23 and the bent portion 121 to block the through hole 23 at the hook 12. That is, one side of the blocking portion 331 is located between the bent portion 121 and the through hole 23, and the other side of the blocking portion 331 is against the first clamping portion 24, so that the bent portion 121 is limited by the blocking portion 331 and cannot be separated from the mounting groove 22 at the through hole 23. The blocking portion 331 effectively limits the movement of the hook 12, has a good blocking effect, and the key 10 is firmly installed. Among them, the thickness of the blocking sheet 33 is stable, which effectively avoids the problem of the feel and protrusion of the key 10 caused by the size problem.

[0042] See also Figures 5 to 7In some optional embodiments, the mounting groove 22 is a blind groove structure, and a through hole 23 is provided in the mounting groove 22 for the ear 12 to extend into the middle frame 20. The mounting groove 22 is used to accommodate the pressing body 11, and the through hole 23 in the mounting groove 22 is used for the ear 12 and the pressing portion 13 to extend into the middle frame 20. Among them, a pressing portion 13 for pressing the contact 34 is provided on the key 10, and the pressing portion 13 extends into the middle frame 20 through the through hole 23. A conductive kit can be provided on the pressing portion 13, or a conductive member for conductive conduction can be fixed on the pressing portion 13. The pressing portion 13 presses the contact 34 to conduct the contact 34 on the FPC 30. When the force applied to the pressing body 11 is removed, the contact 34 is elastically reset, and the elastic force of the contact 34 acts on the pressing portion 13 to drive the entire key 10 to reset to the starting position. Specifically, a hollow installation cavity 21 is provided in the middle frame 20 , and the FPC 30 is installed in the installation cavity 21 . The hanging ear 12 and the pressing portion 13 can pass through the through hole 23 and extend into the installation cavity 21 to be hung on the middle frame 20 or cooperate with the FPC 30 .

[0043] See also Figures 1 to 5 In some optional embodiments, when both the two hanging ears 12 are flush with the pressing body 11 in the length direction of the pressing body 11; or both the hanging ears 12 are reduced inward in the length direction of the pressing body 11; or one side is flush with the pressing body 11 and the other side is reduced inward, both the hanging ears 12 need to be limited by the blocking piece 33. At this time, the thickness of the area where the middle frame 20 cooperates with the button 10 is consistent, and both the hanging ears 12 are engaged with the blocking piece 33. In other embodiments, one of the two hanging ears 12 protrudes out of the pressing body 11 in the length direction of the pressing body 11, and the other hanging ear 12 is flush with the pressing body 11 or shorter than the pressing body 11. At this time, the thickness of one side of the area where the middle frame 20 cooperates with the button 10 is greater than the thickness of the other side, one hanging ear 12 is engaged with the blocking piece 33, the blocking piece 33 is against the first engaging portion 24, and the other hanging ear 12 is engaged with the second engaging portion 25 of the middle frame 20.

[0044] To achieve the above another object, the present invention further provides an electronic device, including a device body, and also including the above key fixing structure 100, wherein the key fixing structure 100 is disposed in the device body. The electronic device of the present invention, because the key fixing structure 100 is disposed, the installation structure of the key 10 on the electronic device is more stable, the key 10 feels better, and the production cost and assembly cost of the key 10 are reduced.

[0045] like Figures 1 to 8As shown, the electronic device of the present invention includes a key fixing structure 100, and the key fixing structure 100 includes a key 10, a middle frame 20 and an FPC 30. The key 10 includes a pressing body 11 for pressing, and a hanging ear 12 connected to the pressing body 11. The hanging ear 12 is used to cooperate with the structure in the middle frame 20 to install the pressing body 11 on the middle frame 20 according to a certain position, so that the internal FPC 30 can be touched by operating the pressing body 11 to start the corresponding function. Specifically, the hanging ear 12 protrudes from one side of the pressing body 11, and one end of the hanging ear 12 is bent to form a bending portion 121. The middle frame 20 is provided with a mounting groove 22 for mounting the key 10, and the key 10 is installed in the mounting groove 22, and one end of the key 10 extends into the middle frame 20 in the mounting groove 22 so that the key 10 can be positioned and the key 10 can be matched with the FPC 30. In addition, the side of the pressing body 11 away from the hanging ear 12 protrudes out of the mounting groove 22 for pressing. The FPC 30 is arranged in the middle frame 20 and is electrically connected to the circuit structure in the device to realize its corresponding function. The FPC 30 includes a metal sheet 31 and a substrate 32 bonded to each other. The substrate 32 is provided with a contact 34 that cooperates with the key 10. The key 10 is pressed to press the contact 34 so that the contact 34 can be connected, thereby realizing the corresponding function. When the force applied by the key 10 to the contact 34 disappears, the contact 34 can be elastically reset and drive the key 10 to reset to the initial position. Among them, a baffle 33 is protrudingly arranged on the metal sheet 31, and the structure and thickness of the baffle 33 are consistent with those of the metal sheet 31. The baffle 33 can be flexibly bent and can be placed on the side of the bending portion 121 close to the pressing body 11, and one side of the baffle 33 protrudes out of the bending portion 121 and abuts against the middle frame 20. It can be understood that the baffle 33 can limit the hanging ear 12 to prevent the button 10 from being separated from the middle frame 20. The baffle 33 protrudes from the metal sheet 31, has a stable structure, is fixedly installed, and has a fixed thickness, which can effectively avoid the size fluctuation of the button 10 when it cooperates with the latch. If the button 10 is fixed by a fixing member, the fixing member will be at risk of displacement, and the button 10 and the fixing member are both injection molded, and the dimensional accuracy of the molding will have deviations, which is easy to affect the pressing feel. The baffle 33 in the present invention has a stable thickness, and only the size of the button 10 needs to be guaranteed. The baffle 33 is used for limiting, which effectively avoids the feel and protrusion of the button 10 caused by the size problem. On the other hand, there is no need to form a fixing member separately, which saves the production cost and assembly cost of the fixing member, and effectively reduces the cost. The electronic device of the present invention is provided with a key fixing structure 100, which has a simple and stable structure, small size fluctuation, good feel of the button 10 and effectively reduces the production cost.

[0046] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A key fixing structure, suitable for electronic equipment, characterized in that: include: The button comprises a pressing body and a hanging ear connected to the pressing body, wherein the hanging ear protrudes from one side of the pressing body and is bent to form a bending portion; The middle frame is provided with a mounting groove for mounting the button, the button is mounted in the mounting groove and one end of the button extends into the middle frame in the mounting groove, and a side of the pressing body away from the hanging ear protrudes out of the mounting groove for pressing; The FPC is arranged in the middle frame, and includes a metal sheet and a substrate bonded to each other, the substrate is provided with contacts cooperating with the button, the metal sheet is provided with a blocking piece protrudingly, the blocking piece is flexibly bent and can be placed on a side of the bent portion close to the pressing body, and one side of the blocking piece protrudes from the bent portion and abuts against the middle frame.

2. The key fixing structure according to claim 1, characterized in that: The pressing body and the bending portion are hollowed out to form a receiving groove, and the blocking piece is located in the receiving groove.

3. The key fixing structure according to claim 2, characterized in that: The blocking sheet can be elastically movable relative to the metal sheet and always has a tendency to be placed in the accommodating groove.

4. The key fixing structure according to claim 1, characterized in that: The blocking sheet and the metal sheet are in an integrated structure.

5. The key fixing structure according to claim 1, characterized in that: The pressing body is provided with the hanging ears at both ends, and the two hanging ears are flush with the pressing body in the length direction, or the two hanging ears are reduced inwardly in the length direction of the pressing body, or at least one of the hanging ears is flush with the pressing body or reduced inwardly in the length direction of the pressing body.

6. The key fixing structure according to claim 1, characterized in that: A through hole is provided in the installation groove for the hanging ear to extend into the middle frame.

7. The key fixing structure according to claim 6, characterized in that: The button is provided with a pressing portion for pressing the contact point, and the pressing portion passes through the through hole and extends into the middle frame.

8. The key fixing structure according to claim 1, characterized in that: The middle frame and the button cooperate with each other in the same thickness, and the two hanging ears are both engaged with the blocking piece.

9. The key fixing structure according to claim 1, characterized in that: The thickness of one side of the area where the middle frame cooperates with the button is greater than the thickness of the other side, one of the hanging ears is engaged with the blocking piece, and the other of the hanging ears is engaged with the middle frame.

10. An electronic device, comprising a device body, characterized in that: It also includes a key fixing structure as described in any one of claims 1 to 9, and the key fixing structure is arranged in the device body.

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