CN212752307U - Electronic equipment and functional assembly thereof - Google Patents

Abstract

The utility model relates to an electronic equipment and functional assembly thereof, this electronic equipment includes the casing, the button, switch circuit and electroacoustic transducer, the pilot hole has been seted up on the casing, switch circuit and electroacoustic transducer set up in the casing, the button is planted in the pilot hole, and extend to in the casing, the button can produce the displacement for the casing under the effect of the pressing force that the user applyed, and then trigger switch circuit produces key signal, the biography sound passageway has been seted up on the button, electroacoustic transducer picks up or spreads sound through passing the sound passageway. The area where the microphone of the electronic equipment is located can achieve two different functions of sound pickup of the microphone and pressing of the key. The pick-up hole of the microphone is arranged on the key, so that a through hole structure matched with the key and a through hole structure matched with the microphone do not need to be arranged in two different areas of the shell at the same time, and the integrated design of the shell and the less/non-porous design of the electronic equipment are further facilitated.

Description

Electronic equipment and functional assembly thereof

Technical Field

The application relates to the technical field of electronic equipment, in particular to electronic equipment and a functional component thereof.

Background

With the increasing popularity of electronic devices, electronic devices have become indispensable social and entertainment tools in people's daily life, and users have higher and higher requirements for electronic devices. Taking electronic devices such as mobile phones as an example, the screen occupation ratio of the display screen tends to be a very aggressive design, so as to provide better visual experience for users.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an electronic equipment, wherein, this electronic equipment includes the casing, the button, switch circuit and electroacoustic transducer, the pilot hole has been seted up on the casing, switch circuit and electroacoustic transducer set up in the casing, the button is planted in the pilot hole, and extend to in the casing, the button can produce the displacement for the casing under the effect of the pressing force that the user applyed, and then trigger switch circuit produces the key signal, the biography sound passageway has been seted up on the button, electroacoustic transducer picks up or spreads sound through passing the sound passageway.

The embodiment of the application also provides a functional component applied to the electronic equipment, wherein the functional component comprises a key and an electroacoustic transducer, a sound transmission channel is formed in the key, and the electroacoustic transducer is arranged on the key and picks up or transmits sound through the sound transmission channel.

The beneficial effect of this application is: the area where the microphone of the electronic equipment is located can achieve two different functions of sound pickup of the microphone and pressing of the key. The pick-up hole of the microphone is arranged on the key, so that a through hole structure matched with the key and a through hole structure matched with the microphone do not need to be arranged in two different areas of the shell at the same time, and the integrated design of the shell and the less/non-porous design of the electronic equipment are further facilitated.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an exploded view of an embodiment of an electronic device of the present application;

FIG. 2 is a schematic diagram of a front view of an embodiment of a region A of the electronic device of FIG. 1;

FIG. 3 is an exploded view of one embodiment of the USB socket of FIG. 2;

FIG. 4 is an exploded view of an embodiment of the key assembly of FIG. 2;

FIG. 5 is a schematic cross-sectional view of an embodiment of the electronic device of FIG. 2 in the YZ plane;

fig. 6 is a schematic cross-sectional view of an embodiment of the lead frame of fig. 5;

FIG. 7 is a cross-sectional view of an embodiment of the key shown in FIG. 5;

FIG. 8 is a schematic cross-sectional view of another embodiment of the electronic device of FIG. 2 in the YZ plane;

FIG. 9 is a cross-sectional view of an embodiment of the housing of FIG. 8

Fig. 10 is a schematic cross-sectional view of an embodiment of the key assembly shown in fig. 8;

FIG. 11 is a schematic diagram of a front view of an embodiment of a region B on the electronic device in FIG. 1;

FIG. 12 is a cross-sectional schematic view of an embodiment of the electronic device of FIG. 11 in the YZ plane;

FIG. 13 is a cross-sectional structural view of an embodiment of the housing of FIG. 12;

FIG. 14 is a cross-sectional view of an embodiment of the key of FIG. 12;

fig. 15 is a schematic cross-sectional structure view of an embodiment of the electroacoustic transducer device of fig. 12;

fig. 16 is a schematic cross-sectional structure view of another embodiment of the electronic device of fig. 12 in the YZ plane.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The inventors of the present application have found, through long-term research: taking a mobile phone as an example, in order to continuously improve the screen occupation ratio of the display screen, not only a full screen is generated, but also a 2.5D display screen, even a 3D display screen is developed on the basis of the 2D display screen, that is, at least the edge of the display screen is curved (commonly called as a curved screen). Meanwhile, in order to cooperate with the curved screen to increase the external expressive force of the mobile phone, the edge of the rear cover plate is also curved, which results in that the width of the middle frame (mainly the appearance part between the display screen and the rear cover plate) of the mobile phone is smaller and smaller. The side of the mobile phone generally needs to be provided with keys such as a power key, a volume key, an AI key, etc. to meet the control requirements of the user on the mobile phone. However, for a mobile phone with a curved screen, it is difficult for the middle frame to meet the requirement of setting the traditional Dome (i.e. metal Dome, commonly called "Dome") type keys. For this reason, the related art mostly adopts a pressure sensitive key instead of the Dome key. Compared with the Dome-type key, the pressure-sensitive key generates slight deformation when a user presses the middle frame to generate a key signal, and a through hole structure similar to the Dome-type key does not need to be arranged on the middle frame, so that the integrated design of the middle frame and the less/non-porous design of the mobile phone are facilitated. However, the mobile phone may be in a limited working condition such as falling or impact during the daily use of the user, and once the middle frame is deformed irreversibly under the limited working condition, especially in the area where the pressure-sensitive key is located, the potential safety hazard that the pressure-sensitive key fails occurs. Wherein, the volume key is generally only used in the specific occasion of adjusting the volume; once the power key fails, the mobile phone may not be normally powered on/off, and other functional problems may occur, which may affect the daily use of the user. To this end, the present application proposes the following examples.

Referring to fig. 1, fig. 1 is an exploded schematic view of an embodiment of an electronic device of the present application. It should be noted that: the X, Y, Z directions of the electronic device are illustrated in fig. 1, mainly to illustrate XY, XZ, YZ planes for convenience of description. Accordingly, all directional indicators in this application (such as up, down, left, right, front, and rear … …) are used primarily to explain the relative positional relationship between the components, movement, etc. at a particular attitude (as shown in FIG. 1), and if the particular attitude changes, the directional indicator changes accordingly.

In the present application, the electronic device 10 may be a portable device such as a mobile phone, a tablet computer, a notebook computer, and a wearable device. In this embodiment, the electronic device 10 is taken as a mobile phone for exemplary explanation.

As shown in fig. 1, the electronic device 10 may include a display module 11 and a housing 12. Wherein, the housing 12 may include a middle frame 122 and a rear cover plate 123; the display module 11 and the rear cover plate 123 are respectively located on two opposite sides of the middle frame 122, and can be connected to the middle frame 122 through one or a combination of assembling manners such as clamping, gluing, welding and the like, so that the three are assembled to form a basic structure that the display module 11 and the rear cover plate 123 clamp the middle frame 122 together. Of course, the housing 12 may also be a box-shaped structure without a cover (one end of which is open), that is, the middle frame 122 and the rear cover plate 123 may be an integrally formed structural member; the display module 11 can be connected to the open end of the housing 12 by one or a combination of clamping, gluing, welding and the like. Further, after the display module 11 and the housing 12 are assembled, a cavity structure with a certain volume may be formed, and the cavity structure may be used to dispose the functional component 100, the main board 15, the camera module 16, and other structural components (not shown in fig. 1), such as a battery, a fingerprint module, and an antenna module, so that the electronic device 10 can implement corresponding functions. For example: these structural members are fixed to the middle frame 122 to remain relatively fixed, thereby assembling the complete electronic device 10. Wherein, the structures such as display module 11, camera module 16, fingerprint module, antenna module can pass through Flexible Circuit board (FPC) respectively with structures electric connection such as battery, mainboard 15 to make them can obtain the electric energy supply of battery, and can carry out corresponding instruction under the control of mainboard 15.

Further, the edge of the display module 11 may be bent toward the middle frame 122, so that the image displayed on the display module 11 can extend from the front surface of the display module 11 to the side surface thereof in a form similar to a "waterfall". So set up, not only can reduce or even hide the black edge of display module assembly 11 to make electronic equipment 10 can provide bigger demonstration field of vision for the user, can also make display module assembly 11 build a visual effect around the demonstration, thereby make electronic equipment 10 bring one kind and be different from bang screen, water droplet screen, dig the visual experience of flat full-face screen such as hole screen, over-and-under type camera, sliding closure type camera for the user, and then increase electronic equipment 10's competitiveness.

As shown in fig. 1, the bottom of the electronic device 10 (i.e. the end far away from the camera module 16) is generally provided with a USB socket 13, an electroacoustic transducer 14 (specifically, a speaker and/or a microphone), an earphone socket, and other structural members. These structural elements have one commonality: generally, a corresponding through hole structure is required to be formed on the casing 12 (specifically, the middle frame 122) to communicate with the external environment, so as to implement a corresponding function. For example: the casing 12 (specifically, the middle frame 122) is provided with a plug port 121, and the USB socket 13 is communicated with the external environment through the plug port 121 and is used for being plugged and matched with a USB plug (not shown in fig. 1) inserted through the plug port 121, so that the electronic device 10 can meet the use requirements of data transmission and/or charging. Based on this, one inventive concept of the present application may be: the Dome-type key is structurally combined with the USB socket 13, and the plug port 121 is used to meet the pressing requirement of the Dome-type key, so that one area of the electronic device 10 can implement two different functions.

Referring to fig. 2 to 4 together, fig. 2 is a front view structural schematic diagram of an embodiment of an area a on the electronic device in fig. 1, fig. 3 is an exploded structural schematic diagram of an embodiment of the USB socket in fig. 2, and fig. 4 is an exploded structural schematic diagram of an embodiment of a key assembly in fig. 2. It should be noted that: the direction indicated by the arrow X in fig. 3 can be considered as the long axis direction of the pin holder, and the direction indicated by the arrow Y in fig. 3 can be considered as the short axis direction of the pin holder. The dimension of the pin support along the long axis direction is larger than the dimension of the pin support along the short axis direction, namely the pin support can be flat. Further, the plane of the arrow X and the arrow Y may be regarded as a reference plane as described in the present application.

As shown in fig. 2, the functional components 100 may include a USB socket 13 and a key assembly 17. The USB socket 13 is fixed in the housing 12 and is connected to the external environment through the plug port 121, so that the USB plug can be plugged into the USB socket 13 through the plug port 121. Further, the key assembly 17 may be disposed in the USB socket 13 and may generate a key signal under the pressing action of an object inserted into the insertion/extraction opening 121. With such an arrangement, the area a of the electronic device 10 (i.e., the area where the USB socket 13 is located) can implement two different functions, namely, inserting and removing the USB plug and pressing the key assembly 17. At this time, the key assembly 17 is hidden in the casing 12 and shares the same insertion opening 121 with the USB socket 13, so that no additional through hole structure matched with the key assembly 17 needs to be formed on the casing 12, which is favorable for the integrated design of the middle frame 122 and the less/non-porous design of the electronic device 10. In addition, since the USB socket 13 is generally small and has a certain depth, the key assembly 17 is not directly exposed to the user, which is advantageous for increasing the consistency of the appearance structure of the electronic device 10.

As shown in fig. 3, the USB receptacle 13 may include a USB housing 131, a pin holder 132, a pin assembly 133, a support plate 134, and a sealing member 135. The USB frame 131 is mainly used for protecting the USB socket 13 and is fixedly connected to the housing 12 (specifically, the middle frame 122). Therefore, the USB housing 131 is provided with a receiving cavity 136, and the pin holder 132, the supporting plate 134 and the sealing member 135 can be fixed in the receiving cavity 136. The pin assembly 133 is attached to the surface of the pin holder 132, and may be partially embedded in the pin holder 132, so that when the USB plug is mated with the USB socket 13, the pin assembly 133 is electrically connected to the corresponding pin on the USB plug. It should be noted that: for the USB sockets 13 of lighting, Type-C, etc., the pin assembly 133 may specifically include two sets of pins, and the two sets of pins are respectively located on two opposite sides of the pin support 132. Further, the support plate 134 is configured to support the pin assembly 133 (particularly the ends thereof) such that the pin assembly 133 remains fixed relative to the pin holder 132. The sealing member 135 may be foam and/or sealant, etc., and is disposed on a side of the supporting plate 134 facing away from the pin holder 132 to provide the USB socket 13 with a certain waterproof performance.

Further, in the process of plugging and matching the USB plug with the USB socket 13, the USB plug can be stopped by the pin support 132 and/or the middle frame 122, so as to avoid the undesirable phenomenon of over-plugging of the USB plug, and further protect the internal structure (e.g., the key assembly 17) of the USB socket 13.

As shown in fig. 4, the key assembly 17 may include keys 171, a switch circuit 172, and a circuit board (which may be referred to as a first flexible circuit board 173). The key assembly 17 may be a Dome key, and may be used as a power key of the electronic device 10. At this time, the key assembly 17 can be used as a standby power key (also referred to as a "reset key") to be used when the pressure-sensitive power key fails, so as to avoid the functional problems of the electronic device 10, such as the failure of normal power on/off, and further meet the daily use requirements of users. Accordingly, the switch circuit 172 may be a metal dome, and may be fixed on the first flexible circuit Board 173 by Surface Mount Technology (SMT), and the other end of the first flexible circuit Board 173 away from the switch circuit 172 may be electrically connected To the main Board 15 by a BTB (Board To Board) connector. Further, the key 171 is disposed on a side of the switch circuit 172 facing away from the first flexible circuit board 173; when the key assembly 17 is in the natural state (i.e., the switch circuit 172 is in the non-activated state), the keys 171 can be in contact with the switch circuit 172 to increase the compactness of the key assembly 17 in structure. Of course, the key assembly 17 may be a Tact Switch (Tact Switch). The detailed structure of the tact switch is not described in detail herein, but is within the understanding of those skilled in the art.

Further, the button 171 can be disposed on the lead frame 132 and can be displaced relative to the lead frame 132 by a pressing force applied by a user, so as to trigger the switch circuit 172 to generate a button signal. For example: the button 171 is attached to the surface of the lead frame 132, or partially embedded in the lead frame 132, and can be displaced along the extending direction of the lead frame 132 by the pressing force applied by the user. At this time, since the key 171 protrudes out of the pin support 132, the USB plug needs to be provided with a corresponding sliding groove, so that in the process of inserting and matching the USB plug with the USB socket 13, the USB plug can avoid the key 171 through the sliding groove, and further avoid the USB plug from mistakenly touching the switch circuit 172. For another example: as shown in fig. 5, pin holder 132 has a mounting cavity 1321, and key assembly 17 is disposed in mounting cavity 1321 and can be displaced in the extending direction of mounting cavity 1321 by a pressing force applied by a user. At this time, since the button 171 is hidden in the lead frame 132, the USB plug does not need to be provided with a corresponding sliding slot. The extending direction of the mounting cavity 1321 may be the same as the plugging direction of the USB socket 13, so as to simplify the matching relationship between the key assembly 17 and the USB socket 13.

Referring to fig. 5 to 7 together, fig. 5 is a schematic cross-sectional structure diagram of an embodiment of the electronic device in fig. 2 on a YZ plane, fig. 6 is a schematic cross-sectional structure diagram of an embodiment of a lead frame in fig. 5, and fig. 7 is a schematic cross-sectional structure diagram of an embodiment of a key in fig. 5. It should be noted that: the direction indicated by the arrow Z in fig. 5 may be regarded as the plugging direction of the USB socket, the pressing direction of the key assembly, and the normal direction of the reference cross section described in this application.

As shown in fig. 5, when the key assembly 17 is disposed in the mounting cavity 1321, one end of the key 171 facing away from the switch circuit 172 is flush with an end surface of the pin holder 132 facing away from the supporting plate 134; alternatively, the button 171 is sunk in the mounting cavity 1321. Of course, the end of the key 171 facing away from the switch circuit 172 may also protrude from the end surface of the lead frame 132 facing away from the supporting plate 134, except that the protruding distance of the key 171 relative to the end surface of the lead frame 132 facing away from the supporting plate 134 is smaller than the minimum stroke of the key 171 triggering the switch circuit 172. So set up to in the USB plug and the USB socket 13 grafting complex in-process, avoid USB plug mistake to touch switch circuit 172.

Further, a routing channel (not labeled in fig. 5) may be formed between the pin support 132 (specifically, the fixing portion 1322) and the USB housing 131 in a mutual fit manner, so as to allow the routing of the switch circuit 172 (specifically, the first flexible circuit board 173) to extend to a side of the supporting plate 134 departing from the pin support 132 through the routing channel. The traces of the switch circuit 172 and the lead elements 133 may be electrically connected to the same flexible circuit board 137, and the flexible circuit board 137 may be further electrically connected to the motherboard 15 through a BTB connector. At this time, the first flexible circuit board 173 may be first attached to the flexible circuit board 137 of the lead assembly 133 by an SMT process, and then electrically connected to the motherboard 15 by the flexible circuit board 137, instead of the first flexible circuit board 173 directly extending to the motherboard 15, so that the length of the first flexible circuit board 173 may be shortened, and the manufacturing cost of the functional assembly 100 may be saved. In other words, the flexible circuit board 137 can also realize the control requirement of the key assembly 17 based on the data transmission and charging requirement of the USB socket 13.

As shown in fig. 6, pin holder 132 may include a fixing portion 1322 and a mating portion 1323 that are integrally connected. In a reference cross section perpendicular to the plugging direction of the USB socket 13, the cross-sectional area of the fixing portion 1322 is larger than that of the plugging portion 1323. At this time, the fixing portion 1322 is fixed in the accommodating cavity 136, for example, the pin holder 132 is glued and/or clamped with the USB frame 131 at the fixing portion 1322, so that the plugging portion 1323 extends in a cantilever manner. Further, the mounting cavity 1321 extends from the plug portion 1323 to the fixing portion 1322, and is divided into a key mounting cavity 13211 located at the plug portion 1323 and a circuit mounting cavity 13212 located at the fixing portion 1322. Wherein, in the reference section, the cross-sectional area of the circuit mounting cavity 13212 is larger than that of the key mounting cavity 13211. At this time, as shown in fig. 5, the key is inserted into the key mounting chamber 13211, and the switch circuit 172 is disposed in the circuit mounting chamber 13212.

In one aspect, the circuit mounting cavity 13212 may penetrate the fixing portion 1322 in the short axis direction. With this arrangement, the volume of the circuit mounting chamber 13212 can be increased, thereby facilitating the arrangement of the switch circuit 172 and the first flexible circuit board 173.

On the other hand, the key mounting cavity 13211 may be further divided into a first sub-key mounting cavity 13213 adjacent to the circuit mounting cavity 13212 and a second sub-key mounting cavity 13214 facing away from the circuit mounting cavity 13212. Wherein, in the reference cross section, the cross sectional area of the first sub key installation cavity 13213 is larger than that of the second sub key installation cavity 13214. With this arrangement, an annular platform 13215 can be formed at the junction of the first sub-key mounting cavity 13213 and the second sub-key mounting cavity 13214, so that the key 171 can be stopped by the lead frame 132 in the direction opposite to the pressing direction, thereby preventing the key 171 from falling out of the key mounting cavity 13211.

As an example, as shown in fig. 7, the key 171 may include a force receiving portion 1711 and a pressing portion 1712 that are integrally connected. In the reference section, the cross-sectional area of the pressing portion 1712 is larger than that of the force receiving portion 1711. At this time, the force receiving portion 1711 is disposed in the second sub-key installation cavity 13214 and receives a pressing force applied by the user, and the pressing portion 1712 is disposed in the first sub-key installation cavity 13213 and triggers the switch circuit 172 by the pressing force applied by the user. Further, since the switch circuit 172 may be a metal spring, the switch circuit 172 has a certain elasticity, that is, the switch circuit 172 may be regarded as an elastic member. With this arrangement, when key assembly 17 is in a natural state (i.e., switch circuit 172 is in a non-activated state), switch circuit 172 can elastically press pressing portion 1712 against annular platform 13215, thereby increasing the structural compactness of functional assembly 100.

Similarly, the second sub-key installation cavity 13214 may penetrate the insertion part 1323 in the short axis direction. With this arrangement, it is possible to increase the volume of the key installation cavity 13211 and thus the volume of the key 171 (particularly, the cross-sectional area thereof in the reference section) so as to facilitate the user to apply the pressing force to the key 171.

Referring to fig. 8 and 9 together, fig. 8 is a schematic cross-sectional structure view of another embodiment of the electronic device in fig. 2 on a YZ plane, and fig. 9 is a schematic cross-sectional structure view of an embodiment of the housing in fig. 8. It should be noted that: the direction indicated by the arrow Z in fig. 8 can be regarded as the plugging direction of the USB socket, and the direction indicated by the arrow Y in fig. 8 can be regarded as the pressing direction of the key assembly. Further, a plane on which a dotted line is located in fig. 9 may be regarded as a connection end surface formed between the pressing hole and the insertion/extraction port when the pressing hole and the insertion/extraction port communicate with each other.

The main differences from the above described embodiment are: in this embodiment, the key assembly 17 may be arranged side by side with the USB socket 13 in the plugging direction of the USB socket 13. As shown in fig. 8, the USB socket 13 and the key assembly 17 are fixed in the casing 12, and at least a portion of the key assembly 17 is exposed out of the insertion opening 121, so that the key assembly 17 can generate a key signal under the pressing action of an object extending into the insertion opening 121. The casing 12 may be provided with a pressing hole 1221, and the pressing hole 1221 is communicated with the insertion opening 121, so that the key assembly 17 is exposed to the insertion opening 121 through the pressing hole 1221. Of course, the housing 12 may also be provided with a notch, and the notch is communicated with the insertion opening 121, so that the key assembly 17 is exposed to the insertion opening 121 through the notch. With such an arrangement, the area a of the electronic device 10 (i.e., the area where the USB socket 13 is located) can also implement two different functions, namely, inserting and removing the USB plug and pressing the key assembly 17. At this time, the key assembly 17 is hidden in the casing 12 and shares the same insertion opening 121 with the USB socket 13, so that no additional through hole structure matched with the key assembly 17 needs to be formed on the casing 12, which is favorable for the integrated design of the middle frame 122 and the less/non-porous design of the electronic device 10. Similarly, the key assembly 17 is not directly exposed to the user, again contributing to increased structural uniformity of the electronic device 10. In addition, compared to the above embodiments, the structure of the USB socket 13 in the embodiment may not be changed greatly, which is favorable for ensuring the versatility of the USB socket 13 and further reducing the circulation cost of the electronic device 10.

Further, in the plugging direction of the USB socket 13 and the USB plug, the portion of the key assembly 17 exposed to the plugging opening 121 is located between the USB casing 131 and the inlet end of the plugging opening 121. So set up, can be so that button subassembly 17 is close to plug mouth 121 more than USB socket 13, and then shortens the distance between button subassembly 17 and the plug mouth 121 to the user exerts the pressing force to button subassembly 17.

As shown in fig. 8, the pressing direction of the key assembly 17 can be perpendicular to the plugging direction of the USB socket 13, so as to simplify the matching relationship between the key assembly 17 and the casing 12 and the USB socket 13. Of course, the pressing direction of the key assembly 17 may also be inclined by an angle with respect to the plugging direction of the USB socket 13, for example, the inclination angle is greater than or equal to 45 degrees, so that the front surface of the key assembly 17 receiving the pressing force is inclined with respect to the plugging direction of the USB socket 13, so as to facilitate the user to apply the pressing force to the key assembly 17.

As shown in fig. 9, the insertion opening 121 may be opened in the middle frame 122, so that the inside of the housing 12 can communicate with the external environment through the insertion opening 121. Further, the middle frame 122 is provided with a partition 1222 for defining the insertion opening 121 at a position close to the rear cover plate 123, and the partition 1222 is spaced from the rear cover plate 123 in a direction perpendicular to the insertion direction, so as to form a cavity (not labeled in fig. 8 and 9) between the middle frame 122 and the housing 12. Here, pressing hole 1221 is opened in partition wall 1222, and key assembly 17 is fixed at least partially between partition wall 1222 and rear cover plate 123. At this time, as shown in fig. 8, the key 171 may be exposed out of the insertion opening 121 through the pressing hole 1221, and may be displaced by the pressing action of the object extending into the insertion opening 121, so as to trigger the switch circuit 172 to generate the key signal.

In some embodiments, when key assembly 17 is disposed in housing 12, the end of key 171 facing away from switch circuit 172 is flush with press hole 1221 and connection end face 1224 of insertion/extraction opening 121; alternatively, the button 171 is sunk in the pressing hole 1221. With such an arrangement, in the process of inserting and matching the USB plug with the USB socket 13, the USB plug can be prevented from mistakenly touching the switch circuit 172, and the button 171 can be prevented from stopping the USB plug. Further, in order to eliminate machining errors, assembly errors, and the like, the end of the key 171 away from the switch circuit 172 may be chamfered.

In other embodiments, when key assembly 17 is disposed in housing 12, the end of key 171 facing away from switch circuit 172 may also protrude beyond press hole 1221 and connecting end 1224 of insertion/removal opening 121. The end is provided with a guide angle 1713, as shown in fig. 10, that is, the end of the key 171 is chamfered. At this time, the guiding angle 1713 is mainly used for guiding the USB plug to pass through the key 171 during the process of inserting the USB plug into the USB socket 13 through the insertion/extraction opening 121, and the protruding distance of the end with respect to the connecting end face 1224 is smaller than the minimum stroke of the key 171 for triggering the switch circuit 172. With such an arrangement, in the process of inserting and matching the USB plug with the USB socket 13, the USB plug can be prevented from mistakenly touching the switch circuit 172, and the button 171 can be prevented from stopping the USB plug.

Referring to fig. 10, fig. 10 is a schematic cross-sectional structure diagram of an embodiment of the key assembly in fig. 8.

As shown in fig. 10, the key assembly 17 may also include a key support 174. The key holder 174 is fixed on the middle frame 122, and the circuit board (specifically, the first flexible circuit board 173) is fixed on the key holder 174. At this time, compared with the case where the key assembly 17 is directly fixed to the rear cover plate 123 and then assembled with the middle frame 122, the key assembly 17 and the middle frame 122 are assembled through the key holder 174, as shown in fig. 8, which can reduce the difficulty of assembling the key assembly 17 to some extent. In addition, sealing members (not shown in fig. 8) such as foam and sealant may be disposed between the key holder 174 and the middle frame 122 and the USB outer frame 131, so as to increase the waterproof performance of the key assembly 17.

Further, the key holder 174 may include a first holder portion 1741 and a second holder portion 1742 arranged in a stepped manner. As shown in fig. 8, the thickness of the first shelf 1741 is smaller than the distance between the partition 1222 and the rear cover 123 in the direction perpendicular to the plugging direction, so that the first shelf 1741 is inserted between the partition 1222 and the rear cover 123. The second bracket portion 1742 has a thickness greater than that of the first bracket portion 1741 and is fixed to the middle frame 122. The arrangement is such that when the key holder 174 is spliced with the middle frame 122, a cavity (not labeled in fig. 8) can be formed between the key holder 174 and the middle frame 122. At this time, the circuit board is fixed to the first bracket 1741.

Referring again to fig. 1, the bottom of the electronic device 10 (i.e. the end away from the camera module 16) is generally provided with a USB socket 13, an electroacoustic transducer 14 (specifically, a speaker and/or a microphone), an earphone socket, and other structural components. These structural elements have one commonality: generally, a corresponding through hole structure is required to be formed on the casing 12 (specifically, the middle frame 122) to communicate with the external environment, so as to implement a corresponding function. For example: a sound pickup hole is formed in the casing 12 (specifically, the middle frame 122), and the microphone is communicated with the external environment through the sound pickup hole, so that the microphone picks up the voice and/or the environmental sound of the user, and further the electronic device 10 can realize the functions of voice/video call, noise reduction, and the like. For another example: a sound hole is formed in the casing 12 (specifically, the middle frame 122), and the speaker is communicated with the external environment through the sound hole, so that the speaker converts the audio signal into sound and then transmits the sound, and the electronic device 10 can realize the functions of hands-free and external playing. Based on this, one inventive concept of the present application may be: the Dome-type key is structurally combined with the microphone, and the pickup requirement of the microphone is realized by the Dome-type key, so that one area of the electronic device 10 can realize two different functions.

Referring to fig. 11 and 12 together, fig. 11 is a schematic front structure view of an embodiment of a region B on the electronic device in fig. 1, and fig. 12 is a schematic cross-sectional structure view of an embodiment of the electronic device in fig. 11 on a YZ plane. It should be noted that: the direction indicated by the arrow Z in fig. 12 can be regarded as the pressing direction of the key.

As shown in fig. 11 and 12, the functional component 100 may include a key 171 and the electroacoustic transducer device 14. The button 171 is used for triggering the switch circuit 172 to generate a button signal, and is provided with a sound transmission channel 1714. At this time, the electroacoustic transducer device 14 may be disposed on the key 171 and pick up or transmit a sound through the sound transmission channel 1714. Here, the present embodiment is exemplified by taking the electroacoustic transducer device 14 as a microphone and picking up sound through the sound transmission channel 1714. With this arrangement, the B region of the electronic device 10 (i.e., the region where the microphone is located) can perform two different functions, namely, sound collection by the microphone and pressing of the button 171. At this time, the sound collecting hole of the microphone (specifically, the sound transmission channel 1714) is formed in the key 171, so that it is not necessary to simultaneously form a through hole structure matching with the key 171 and a through hole structure matching with the microphone in two different areas of the housing 12, which is further beneficial to the integrated design of the middle frame 122 and the less/less hole design of the electronic device 10. In addition, the key 171 can be used as a standby power key to be used when the pressure-sensitive power key fails, so that functional problems of abnormal power on/off and the like of the electronic device 10 are avoided, and daily use of the user is further satisfied. In other words, the key 171 is much lower in use frequency than the power key in the conventional sense. Therefore, the size of the key 171 can be as small as possible, and the size can meet the setting requirement of the sound transmission channel 1714 and the pressing requirement of the user; the key 171 may not protrude from the housing 12 (specifically, the middle frame 122), and a CMF (Color-Material-Finishing) processing process of the appearance of the key 171 may also be consistent with that of the middle frame 122 as much as possible, so that the key 171 is directly exposed to the user but is not obviously perceived by the user, which is further beneficial to increasing the consistency of the appearance structure of the electronic device 10. On the basis, the sound collecting hole of the microphone is formed in the key 171, so that the sound collecting hole and the key 171 serve as an appearance feature, a user can mistakenly think that the sound collecting hole of the microphone is formed in the middle frame 122, and the recognition/perception degree of the user on the key 171 is reduced.

It should be noted that: for an electronic device 10 such as a mobile phone, besides a microphone located at the bottom of the electronic device 10, a microphone located at the top of the electronic device 10 (i.e. an end close to the camera module 16) may also be provided; the former may be referred to as an "upper microphone" and the latter may be referred to as a "lower microphone". The upper microphone is mainly used for picking up the sound of the environment where the electronic device 10 is located to realize the noise reduction function, and the lower microphone is mainly used for picking up the voice of the user to realize the conversation function; the two cooperate to further improve the speech quality of the electronic device 10. As an example, the present embodiment is described taking the electroacoustic transducer device 14, specifically, the lower microphone as an example.

As shown in fig. 12, the key 171 can be inserted into the assembling hole 124 formed on the housing 12 and extend into the housing 12; the switching circuit 172 and the electroacoustic transducer device 14 are disposed within the housing 12. At this time, the button 171 is displaced relative to the housing 12 by the pressing force applied by the user, and the switch circuit 172 is triggered to generate a button signal. Further, a sound transmission channel 1714 is opened on the key 171, and the electroacoustic transducer 14 picks up or transmits sound through the sound transmission channel 1714. At this time, the extending direction of the sound transmission channel 1714 may be the same as the pressing direction of the button 171, which may increase the uniformity of the thickness of the button 171 in the wall thickness.

Referring to fig. 13 to 15 together, fig. 13 is a schematic cross-sectional structure diagram of an embodiment of the housing in fig. 12, fig. 14 is a schematic cross-sectional structure diagram of an embodiment of the key in fig. 12, and fig. 15 is a schematic cross-sectional structure diagram of an embodiment of the electroacoustic transducer in fig. 12.

As shown in fig. 13, the housing 12 (specifically, the middle frame 122) is provided with an assembling hole 124. Wherein, the inner diameter of the assembly hole 124 and the outer diameter of the key 171 can be in clearance fit or transition fit. Preferably, a transition fit can be formed between the two. This is provided so that the push buttons 171 can be inserted into the fitting holes 124 and can be displaced relative to the housing 12 by the pressing force of the user. Meanwhile, the gap between the key 171 and the middle frame 122 may be reduced as much as possible in the reference cross section, thereby reducing the recognition/perception of the key 171 by the user. Further, as shown in fig. 11, the key 171 may have a circular, rectangular, or the like shape in the outer appearance of the middle frame 122. In the present embodiment, the exemplary explanation is given by taking the key 171 as a circle.

Further, a bearing boss 1223 may be provided on the housing 12. Wherein the bearing boss 1223 is disposed opposite to the fitting hole 124 in the pressing direction of the push button 171. At this time, the switch circuit 172 may be disposed on a side of the bearing boss 1223 facing the mounting hole 124, and an end of the key 171 facing away from the mounting hole 124 may also extend to contact the switch circuit 172, so that the key 171 triggers the switch circuit 172. With this arrangement, the structural compactness of the key 171 and the switch circuit 172 can be increased.

As shown in fig. 14, the key 171 may further have a housing 1715. Wherein, the containing cavity 1715 is communicated with the sound transmission channel 1714. At this time, the electroacoustic transducer device 14 may be disposed within the housing cavity 1715. Illustratively, the housing 1715 may have an opening 1716, and the electroacoustic transducer device 14 may be inserted into the housing 1715 through the opening 1716. Wherein the opening 1716 may be oriented perpendicular to the direction of extension of the sound transmission channel 1714. Further, since the sound transmission channel 1714 is mainly used for transmitting sound and the housing chamber 1715 is mainly used for housing the electroacoustic transducer device 14, the cross-sectional area of the housing chamber 1715 may be larger than that of the sound transmission channel 1714 in the reference cross-section.

Further, the key 171 may include a force receiving portion 1711 and a pressing portion 1712 that are integrally connected. On the reference section, the cross-sectional area of the pressing portion 1712 is larger than that of the force-receiving portion 1711, so that the key 171 can be stopped by the middle frame 122 in the direction opposite to the pressing direction, and the key 171 is prevented from falling out of the assembly hole 124. At this time, the force receiving portion 1711 may be inserted into the fitting hole 124 and used to receive a pressing force applied by the user; the pressing portion 1712 can trigger the switch circuit 172 under the pressing force applied by the user. Further, the sound transmission passage 1714 may be opened to the receiving portion 1711, and the accommodation cavity 1715 may be opened to the pressing portion 1712.

As an example, the pressing part 1712 may include a top wall 17121, a connection wall 17122, and a bottom wall 17123. The top wall 17121 is connected to the force receiving portion 1711, the bottom wall 17123 is spaced from the top wall 17121 along the pressing direction, and the connecting wall 17122 is connected between the top wall 17121 and the bottom wall 17123 to form a receiving cavity 1715. At this time, the opening 1716 may be opened in the connecting wall 17122, the electroacoustic transducer device 14 may be fixed to the side of the top wall 17121 facing the bottom wall 17123, and the switch circuit 172 may be provided on the side of the bottom wall 17123 facing away from the top wall 17121. In other words, the electroacoustic transducer device 14 may be fixed to the key 171 and displaced synchronously with the key 171. In this case, the electroacoustic transducer device 14 and the button 171 may be a single structural member.

As shown in fig. 15, the electroacoustic transducer device 14 may include a transducer body 141, a dust screen 142, and a second flexible circuit board 143. One end of the second flexible circuit board 143 may be electrically connected to the electroacoustic transducer 14 through an SMT process, and the other end may be electrically connected to the main board 15 through a BTB connector. At this time, as shown in fig. 12, the other end of the first flexible circuit board 173 and the other end of the second flexible circuit board 143 are respectively located on opposite sides of the main board 15, so that the first flexible circuit board 173 and the second flexible circuit board 143 can be prevented from structurally interfering with each other. The dust screen 142 may be disposed on a side of the second flexible circuit board 143 away from the transducing body 141 through a sealing member (not labeled in fig. 15) such as foam or sealant, so as to prevent the hole on the transducing body 141 from being blocked by a foreign object such as dust. Further, a reinforcing plate 144 may be disposed between the dust screen 142 and the second flexible circuit board 143 to increase structural strength of the two, and prevent the dust screen 142 from scratching the second flexible circuit board 143.

Referring to fig. 16, fig. 16 is a schematic cross-sectional structure diagram of another embodiment of the electronic device in fig. 12 in the YZ plane.

The main differences from the above described embodiment are: in this embodiment, the electroacoustic transducer device 14 may be fixed within the housing 12. At this time, the electroacoustic transducer device 14 is fixed relative to the housing 12, and moves relative to the button 171 when the button 171 is displaced relative to the housing 12. With this arrangement, compared with the case where the electroacoustic transducer device 14 is fixed to the button 171, the total weight of the button 171 can be reduced to prevent the button 171 from being too heavy to erroneously touch the switch circuit 172.

As shown in fig. 16, the sound transmission channel 1714 may include a first sub sound transmission channel 17141 and a second sub sound transmission channel 17142 that communicate with each other. The extending direction of the first sub sound transmission channel 17141 may be the same direction as the pressing direction of the key 171, and the extending direction of the second sub sound transmission channel 17142 may be the same direction as the pressing direction. For example: the extending direction of the first sub sound transmission channel 17141 and the extending direction of the second sub sound transmission channel 17142 are perpendicular to each other. Further, the free end of the first sub sound transmission channel 17141 is located at the end face of the key 171 exposed through the fitting hole 124, and the free end of the second sub sound transmission channel 17142 faces the electroacoustic transducer device 14.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes that can be directly or indirectly applied to other related technologies, which are made by using the contents of the present specification and the accompanying drawings, are also included in the scope of the present application.

Claims (10)

1. The electronic equipment is characterized by comprising a shell, a key, a switch circuit and an electroacoustic transducer, wherein an assembly hole is formed in the shell, the switch circuit and the electroacoustic transducer are arranged in the shell, the key is inserted into the assembly hole and extends into the shell, the key can displace relative to the shell under the action of pressing force applied by a user, so that the switch circuit is triggered to generate a key signal, a sound transmission channel is formed in the key, and the electroacoustic transducer picks up or transmits sound through the sound transmission channel.

2. The electronic device of claim 1, wherein said electro-acoustic transducer means is fixed to said key and displaced synchronously with said key.

3. The electronic device of claim 2, wherein the key further comprises a receiving cavity, the receiving cavity is communicated with the sound transmission channel, and the electroacoustic transducer is disposed in the receiving cavity.

4. The electronic device of claim 3, wherein the extending direction of the sound transmission channel is the same as the pressing direction of the key, and the receiving cavity has an opening, and the opening is oriented perpendicular to the extending direction of the sound transmission channel.

5. The electronic device according to claim 4, wherein a cross-sectional area of the housing chamber is larger than a cross-sectional area of the sound transmission channel in a reference cross-section perpendicular to the pressing direction.

6. The electronic device according to claim 5, wherein the key includes a force receiving portion and a pressing portion integrally connected, the force receiving portion is inserted into the fitting hole, a cross-sectional area of the pressing portion is larger than a cross-sectional area of the force receiving portion in the reference cross-section, the sound transmission channel is opened in the force receiving portion, and the accommodation cavity is opened in the pressing portion.

7. The electronic device according to claim 6, wherein the pressing portion includes a top wall, a connecting wall, and a bottom wall, the top wall is connected to the force-receiving portion, the bottom wall is spaced from the top wall along the pressing direction, the connecting wall is connected between the top wall and the bottom wall, so as to form the accommodating cavity, the opening is opened in the connecting wall, the electroacoustic transducer is fixed on a side of the top wall facing the bottom wall, and the switch circuit is disposed on a side of the bottom wall facing away from the top wall.

8. The electronic device according to claim 1, wherein the electroacoustic transducer device is fixed relative to the housing, the sound transmission channel includes a first sub sound transmission channel and a second sub sound transmission channel that are communicated with each other, an extending direction of the first sub sound transmission channel is in the same direction as a pressing direction of the key, a free end of the first sub sound transmission channel is located on an end surface of the key exposed through the fitting hole, an extending direction of the second sub sound transmission channel intersects the pressing direction, and a free end of the second sub sound transmission channel faces the electroacoustic transducer device.

9. The electronic device according to claim 1, further comprising a first flexible circuit board, a second flexible circuit board and a main board, wherein one end of the first flexible circuit board is electrically connected to the switch circuit, the other end of the first flexible circuit board is electrically connected to the main board, one end of the second flexible circuit board is electrically connected to the electroacoustic transducer device, the other end of the second flexible circuit board is electrically connected to the main board, and the other end of the first flexible circuit board and the other end of the second flexible circuit board are respectively located on two opposite sides of the main board.

10. The functional component is characterized by comprising a key and an electroacoustic transducer, wherein a sound transmission channel is formed in the key, and the electroacoustic transducer is arranged on the key and used for picking up or transmitting sound through the sound transmission channel.

Images