Patent Description:
This application relates to the technical field of electronics, and in particular, to an electronic device.

With the continuous development of science and technology, a growing number of electronic devices such as mobile phones, tablet computers, or notebook computers are widely used in daily life and work of people, bringing huge convenience to the daily life and work of people.

People have increasing higher requirements not only on performance of electronic devices such as photographing, heat dissipation, or power consumption, but also on thicknesses and weights of electronic devices. How to reduce thicknesses and weights of electronic devices is an urgent problem to be resolved.

<CIT> relates to a mobile terminal including a window; a display module disposed on a rear face of the window and having a first opening; a support plate disposed on a rear face of the display module and having a second opening; and an electronic component exposed to the outside through the first opening and the second opening, wherein a diameter of the first opening is smaller than a diameter of the second opening to prevent the support plate from being exposed through the first opening hole, and wherein the first opening is located within an output region of the display module.

To resolve the foregoing technical problem, this application provides an electronic device, which can realize thinning of electronic devices.

This application provides an electronic device. The electronic device includes: a middle frame; a housing assembly, including a battery cover, where the battery cover is arranged on the middle frame; and a printed circuit board, located between the battery cover and the middle frame. The battery cover also functions as a printed circuit board support.

The battery cover also functioning as a printed circuit board support means that a printed circuit board support in the electronic device is omitted and the battery cover is correspondingly improved so that the battery cover can further provide a function of the printed circuit board support in addition to the original function. Since the printed circuit board support is omitted, a thickness of the electronic device can be reduced by a thickness of at least one printed circuit board support, and a weight can be reduced, thereby facilitating a lightweight design of the electronic device. In addition, to-be-assembled structural members can be reduced, thereby reducing assembly costs. The battery cover includes an exterior portion and at least one fixing portion. The exterior portion includes an external face and a structural face facing away from the external face. The fixing portion is located on a side of the structural face facing away from the external face. The fixing portion is arranged on the exterior portion to realize a fixing function of the printed circuit board support, without a need to arrange the printed circuit board support.

The electronic device further includes at least one fixing structure configured to fix the battery cover and the printed circuit board, so that the battery cover is kept at a preset distance to the printed circuit board. In this way, a press fit effect of the fixing portion and a distance between the functional device borne in the bearing portion and the printed circuit board can be ensured.

The fixing structure includes a screw. The screw includes a screw cap and a rod portion. A threaded hole is arranged on the battery cover. The rod portion of the screw extends through the threaded hole on the battery cover to fix the battery cover to the printed circuit board. When the fixing structure is the screw, the structure is simple and costs are low.

In some possible implementations, based on the battery cover including the fixing portion, the fixing portion and the exterior portion are integrally formed, that is, the structural face partially protrudes in a direction from the external face toward the structural face to form the fixing portion. Alternatively, the fixing portion and the exterior portion are independently formed, that is, a finished fixing portion is fixed to the exterior portion through welding or bonding. When the fixing portion and the exterior portion are integrally formed, the structure is simple. The fixing portion is formed while the exterior portion is formed. When the fixing portion and the exterior portion are independently formed, selection of materials for the exterior portion and the fixing portion is more flexible.

In some possible implementations, based on the battery cover including the fixing portion, the electronic device further includes a flexible printed circuit and a connector that are located between the battery cover and the middle frame. The flexible printed circuit is electrically connected with the printed circuit board through the connector. The fixing portion is in contact with the flexible printed circuit located on the connector. In an application scenario of the fixing portion, press fit of the connector is implemented through the fixing portion, so that the connector is stably fixed to a main board, thereby preventing the connector from loosening or falling off during use, and avoiding a large thickness and weight of the electronic device as a result of use of the printed circuit board support to implement press fit of the connector.

In some possible implementations, the battery cover includes an exterior portion and at least one bearing portion. The exterior portion includes an external face and a structural face facing away from the external face. The bearing portion is located on the side of the structural face facing away from the external face. The bearing portion includes a bearing sub-portion and a connecting sub-portion. The connecting sub-portion is connected between the structural face and the bearing sub-portion. An extending direction of the connecting sub-portion is different from an extending direction of the bearing sub-portion, so that a bearing groove is formed among the structural face, the bearing sub-portion, and the connecting sub-portion. The bearing portion is arranged on the exterior portion to realize a bearing function of the printed circuit board support, without a need to arrange the printed circuit board support.

In some possible implementations, based on the battery cover including the bearing portion, the electronic device further includes a functional device, and at least part of the functional device is located in the bearing groove. That is to say, some functional devices are borne through the bearing portion which serves as the printed circuit board support, to avoid a large thickness and weight of the electronic device as a result of use of the printed circuit board support to bear the functional devices.

In some possible implementations, based on at least part of the functional device being located in the bearing groove, the functional device includes a flash light or a near field communication coil. Two application scenarios of the bearing portion include that the bearing portion bears the flash light and/or the near field communication coil in replacement of the printed circuit board support. In some possible implementations, based on the fixing structure including the screw, each of the battery cover, the printed circuit board, and the middle frame is provided with the threaded hole. The rod portion of the screw extends through the threaded holes arranged on the battery cover, the printed circuit board, and the middle frame to fix the battery cover to the printed circuit board and fix the printed circuit board to the middle frame, thereby realizing integration of the battery cover, the printed circuit board, and the middle frame.

In some possible implementations, based on the fixing structure including the screw, a nut is attached to a surface of the printed circuit board. The rod portion of the screw extends through the threaded hole on the battery cover to be connected to the nut of the printed circuit board, to fix the battery cover to the printed circuit board, thereby realizing integration of the battery cover and the printed circuit board.

In some possible implementations, based on the fixing structure including the screw, when the battery cover includes the exterior portion, the exterior portion includes the external face, and a structural face facing away from the external face, the exterior portion further includes at least one first groove. The exterior portion is partially recessed from the external face in a direction from the external face toward the structural face to form the first groove, and the first groove is in communication with the threaded hole on the exterior portion. The screw cap of the screw is located in the first groove. That is to say, the screw is borne through the first groove, to prevent impact of the screw from protruding from a surface of the exterior portion and affecting an appearance.

In some possible implementations, based on the exterior portion including the at least one first groove, the exterior portion further includes a second groove. The exterior portion is partially recessed from the external face in the direction from the external face toward the structural face to form the second groove. The second groove has a larger size than the first groove, and is in communication with the first groove. The housing assembly further includes a shielding layer. The shielding layer is arranged in the second groove and covers the screw. That is to say, the screw is shielded through the shielding layer, to prevent the screw from being exposed from a surface and affecting the appearance of the electronic device. In addition, the shielding layer is borne through the second groove, to prevent the shielding layer from protruding from the surface of the exterior portion and affecting the appearance.

In some possible implementations, based on the housing assembly including the shielding layer, the shielding layer includes a lens, a PU leather, ceramic, or plastic. A person skilled in art may select the above according to actual situations to meet demands of different users.

In some possible implementations, based on the exterior portion including the first groove and the second groove, a plurality of first grooves and a plurality of second grooves are arranged. The plurality of second grooves are in communication with each other to form an annular groove, and the shielding layers inside the second grooves are a single-piece structure to form an annular shielding layer, which improves appearance quality of the electronic device, so that the electronic device has a fantastic appearance.

In some possible implementations, based on the exterior portion including the first groove and the second groove, the exterior portion further includes a third groove, and the exterior portion is partially recessed from the external face in the direction from the external face toward the structural face to form the third groove. The third groove is provided with the shielding layer. A center of the shielding layer located in the third groove and a center of the shielding layer located in the second groove are arranged in an annular shape, which improves the appearance quality of the electronic device, so that the electronic device has a fantastic appearance.

In some possible implementations, based on the electronic device further including the at least one fixing structure, when the battery cover includes the exterior portion and the at least one fixing portion, the exterior portion includes the external face and the structural face facing away from the external face, and the fixing portion is located on the side of the structural face facing away from the external face, the fixing structure is adjacent to the fixing portion; and/or when the battery cover includes the exterior portion and the at least one bearing portion, the exterior portion includes the external face and the structural face facing away from the external face, and the bearing portion is located on the side of the structural face facing away from the external face, the fixing structure is adjacent to the bearing portion. The screw is arranged in a targeted way, so that a number of screws is reduced, costs are reduced, and process steps are reduced.

In some possible implementations, based on the electronic device further including the at least one fixing structure, a position corresponding to an edge of the printed circuit board is provided with the fixing structure. Mere the fixing structure is mounted to an edge of the printed circuit board, to ensure the press fit effect of the fixing portion and the distance between the functional device borne in the bearing portion and the printed circuit board. Therefore, the number of screws is reduced, the costs are reduced, and the process steps are reduced.

In some possible implementations, the housing assembly further includes a decorative member. The decorative member includes a decorative member body and a skirt edge. The decorative member body, the skirt edge, and the battery cover are integrally formed to further reduce the thickness of the electronic device.

The technical solutions in embodiments of this application are clearly and completely described in the following with reference to the drawings in embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application.

A term "and/or" herein describes only an association relationship for describing associated objects and represents that three relationships may exist. For example, A and/or B may represent: only A exists, both A and B exist, and only B exists.

Terms "first", "second", and the like in the specification of the embodiments of this application and the claims are used to distinguish between different objects, but are not used to indicate a specific sequence of objects. For example, a first target object and a second target object are used to distinguish between different target objects, but are not used to describe a specific sequence of the target objects.

In the embodiments of this application, a term such as "as an example" or "for example" is used to represent giving an example, an illustration, or a description. Any embodiment or design solution described as "in an example" or "for example" in the embodiments of this application should not explained as being more preferred or having more advantages than another embodiment or design solution. Exactly, use of the terms such as "in an example" or "for example" is intended to present a concept in a specific manner.

In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more. For example, a plurality of processing units mean two or more processing units, and a plurality of systems mean two or more systems.

As shown in <FIG> is a schematic structural diagram of an electronic device, and <FIG> is a sectional view of the electronic device shown in <FIG> in a direction HH. The electronic device includes a middle frame <NUM>', a printed circuit board (Printed Circuit Boards, PCB) <NUM>', a printed circuit board support <NUM>', and a battery cover <NUM>'. The PCB <NUM>' and the printed circuit board support <NUM>' are located between the middle frame <NUM>' and the battery cover <NUM>'. The printed circuit board support <NUM>' is located on a side of the PCB <NUM>' facing away from the middle frame <NUM>'. The printed circuit board support <NUM>' is configured to fix some devices on the PCB <NUM>' and/or to bear some devices.

In order to prevent devices on the PCB <NUM>' from colliding with the printed circuit board support <NUM>' during assembly and use, a specific gap needs to be provided between some regions of the printed circuit board support <NUM>' and the devices on the PCB <NUM>'. In addition, in order to ensure strength of the printed circuit board support <NUM>', the printed circuit board support <NUM>' is configured with a relatively large thickness. For example, when the printed circuit board support <NUM>' is made of plastic, the thickness thereof is usually at least <NUM>. When the printed circuit board support <NUM>' is made of metal, the thickness thereof is usually at least <NUM>. Moreover, in order to ensure that the printed circuit board support <NUM> does not push the battery cover <NUM>', a specific gap, such as a gap of <NUM>, needs to be reserved between the printed circuit board support <NUM>' and the battery cover <NUM>'. It may be learned that arrangement of the printed circuit board support <NUM>' results in a large thickness and a large weight of the electronic device.

In order to resolve the foregoing technical problems, an embodiment of this application provides an electronic device. A battery cover also functions as a printed circuit board support, which means that a printed circuit board support in the electronic device is omitted and the battery cover is correspondingly improved so that the battery cover can further provide a function of the printed circuit board support in addition to the original function. Since the printed circuit board support is omitted, a thickness of the electronic device can be reduced by a thickness of at least one printed circuit board support, and a weight can be reduced, thereby facilitating a lightweight design of the electronic device. In addition, to-be-assembled structural members can be reduced, thereby reducing assembly costs.

The electronic device provided in this embodiment of this application may be a mobile phone, a computer, a tablet computer, a personal digital assistant (personal digital assistant, PDA for short), an on-board computer, a television, a smart wearable device, a smart home device, or the like. A specific form of the electronic device is not particularly limited in this embodiment of this application. As shown in <FIG> is a schematic structural diagram of an electronic device according to an embodiment of this application. For ease of description, the electronic device is a mobile phone, for example.

In order to facilitate clear description of subsequent structural features and positional relationships between the structural features, positional relationships between structures within the mobile phone are defined by using an X-axis direction, a Y-axis direction, and a Z-axis direction. The X-axis direction is a width direction of the mobile phone, the Y-axis direction is a length direction of the mobile phone, and the Z-axis direction is a thickness direction of the mobile phone.

As shown in <FIG>, the mobile phone includes a middle frame <NUM>, a housing assembly <NUM>, and a display <NUM>. The middle frame <NUM> is located between the housing assembly <NUM> and the display <NUM>. Referring to <FIG> is a sectional view of the electronic device shown in <FIG> in a direction AA' direction according to an embodiment of this application. A first bonding layer <NUM> formed on the housing assembly <NUM> by using a back applied adhesive or by adhesive dispensing is adhered to the middle frame <NUM>, to realize fixation of the housing assembly <NUM> and waterproof sealing of edges of the housing assembly <NUM> and the middle frame <NUM>.

It should be noted herein that, in order to clearly show the positional relationship between the middle frame <NUM> and the housing assembly <NUM>, a structure of the display <NUM> is not shown in <FIG>. The same is true in the following embodiments, and this is not repeated in the following embodiments.

It should be further noted that, a manner of fixing the housing assembly <NUM> to the middle frame <NUM> is not limited to the foregoing example. In some optional embodiments, the housing assembly <NUM> may be fixed to the middle frame <NUM> through an engagement member.

In addition, in order to ensure assembly accuracy of the housing assembly <NUM>, some positioning modules (not shown in the figure) may be mounted to the housing assembly <NUM>. For example, the positioning modules include a positioning post. Alternatively, an outer profile of the housing assembly <NUM> is directly used as a limiting feature to ensure proper assembly.

The display <NUM>, the middle frame <NUM>, and the housing assembly <NUM> may define an accommodating cavity. With reference to <FIG> is a schematic exploded view of the electronic device according to an embodiment of this application, and <FIG> is an application scenario diagram of an FPC according to an embodiment of this application. Structures such as a PCB <NUM>, a functional device <NUM>, a flexible printed circuit (flexible printed circuit, FPC) <NUM>, a battery <NUM>, and a board to board (board to board, BTB) connector <NUM> are arranged in the cavity. The PCB <NUM> includes a main board <NUM>, a small board <NUM>. The functional device <NUM> includes, for example, a flash light <NUM>, a rear camera <NUM>, a near field communication (Near Field Communication, NFC) coil (not shown in the figure), an elastic piece (not shown in the figure), and a microphone (not shown). One or more rear cameras <NUM> may be arranged. When a plurality of rear cameras <NUM> are arranged, the plurality of rear cameras <NUM> may have different functions. For example, in a possible implementation, one of the rear cameras <NUM> serves as a main camera, another one of the rear cameras <NUM> serves as a zoom camera, another one of the rear cameras <NUM> serves as a wide angle camera, and so on.

For example, still referring to <FIG>, the rear cameras <NUM> are electrically connected to the main board <NUM> through the FPC <NUM>. In some embodiments, the BTB <NUM> is arranged between the FPC <NUM> and the main board <NUM>. The FPC <NUM> is electrically connected to the main board <NUM> through the BTB <NUM>.

It should be noted herein that, although the FPC <NUM> connects the rear cameras <NUM> to the main board <NUM> through the BTB <NUM> in the foregoing example, the FPC <NUM> may further connect another functional device <NUM> to the main board <NUM> through the BTB <NUM> to realize electrical connection between the another functional device <NUM> and the main board <NUM>, and/or the FPC <NUM> may further connect the another functional device <NUM> to the small board <NUM> through the BTB <NUM> to realize electrical connection between the another functional device <NUM> and the small board <NUM>. This is not particularly limited in this embodiment of this application. Unless otherwise specified, the FPC <NUM> connecting the rear cameras <NUM> to the main board <NUM> through the BTB <NUM> is used as an example below.

Still referring to <FIG> and <FIG>, the housing assembly <NUM> includes a battery cover <NUM> and a decorative member <NUM>. A decorative hole <NUM> is arranged on the battery cover <NUM>. The decorative member <NUM> is arranged at the decorative hole <NUM>. The decorative member <NUM> includes a decorative member body <NUM>. In the Z-axis direction, the rear cameras <NUM> are opposite to the decorative member body <NUM>.

In some embodiments, the decorative member <NUM> may further include a skirt edge <NUM> for fixing the decorative member body <NUM> to the battery cover <NUM> and a second bonding layer <NUM> formed by using a back applied adhesive or by adhesive dispensing. The skirt edge <NUM> includes a first annular edge <NUM> and a second annular edge <NUM>. The first annular edge <NUM> is an edge in contact with the decorative member body <NUM>. The second annular edge <NUM> is an edge located on a side of the first annular edge <NUM> facing away from the decorative member body <NUM>. A smallest distance from any point on the first annular edge <NUM> to the second annular edge <NUM> is a size W1 of the skirt edge <NUM>. A larger size W1 of the skirt edge <NUM> indicates a larger area of the second bonding layer <NUM> located on the skirt edge <NUM>, and thereby leads to more sufficient fixation of the decorative member <NUM> to the battery cover <NUM> through the skirt edge <NUM>. Certainly, in practical application, the size W1 of the skirt edge <NUM> cannot be infinite. In some possible implementations, the size W1 of the skirt edge <NUM>, for example, may be greater than or equal to <NUM> or less than or equal to <NUM>. For example, the size W1 of the skirt edge <NUM> may be <NUM>. In this way, occupation of an excessively large internal space of the electronic device due to an excessively large size W1 of the skirt edge <NUM> is avoided, and infirm fixation of the decorative member <NUM> to the battery cover <NUM> due to an excessively small size W1 of the skirt edge <NUM> is avoided. In addition, waterproof sealing is realized.

In some embodiments, the decorative member <NUM> further includes a lens <NUM>. The lens <NUM> is fixed to the decorative member body <NUM>. The rear cameras <NUM> acquire light sources through the decorative member body <NUM> and the lens <NUM>.

A shape of the decorative hole <NUM> is not limited in this embodiment of this application. For example, the shape of the decorative hole <NUM> may be a racetrack, a circle, a rounded square, or a rounded rectangle. It may be understood that, the shape of a racetrack may be a shape formed by two arcs and two opposite sides of a rectangle. The two arcs are arranged opposite to each other, and the two arcs are both adjacently connected to the opposite sides.

It may be understood that a profile of the decorative member body <NUM> and the lens <NUM> correspond to the shape of the decorative hole <NUM>. For example, when the shape of the decorative hole <NUM> is a circle, the profile of the decorative member body <NUM> and shapes of the lens <NUM> are both circles. It should be noted herein that, in the description of the foregoing examples, the decorative member <NUM> is a single-piece structure, but this does not constitute a limitation on this application. In another optional embodiment of this application, the decorative member <NUM> may not be a single-piece structure. For example, a scheme which uses decorative members with internal and external screws may be adopted. Correspondingly, the lens <NUM> is not necessarily a complete lens, and may include independent small lenses. Alternatively, a decorative member partially (a camera position) protruding out may be adopted.

Referring to <FIG> is a sectional view of the electronic device shown in <FIG> in a direction BB' according to an embodiment of this application. The battery cover <NUM> includes an exterior portion <NUM> and at least one fixing portion <NUM>. In the Z-axis direction, the exterior portion <NUM> includes an external face <NUM> and a structural face <NUM> facing away from the external face <NUM>. In the Z-axis direction, the structural face <NUM> partially protrudes to form the fixing portion <NUM>. The fixing portion <NUM> is in contact with the FPC <NUM> directly above the BTB <NUM>, to implement press fit of the BTB <NUM> through the fixing portion <NUM>, so that the BTB <NUM> is stably fixed to the main board <NUM>, thereby preventing the BTB <NUM> from loosening or falling off during use.

It should be noted herein that, the exterior portion <NUM> and the fixing portion <NUM> may be integrally formed. Alternatively, the fixing portion <NUM> may be fixed to the exterior portion <NUM> through welding or bonding.

Referring to <FIG> is a sectional view of the electronic device shown in <FIG> in a direction CC' according to an embodiment of this application. The battery cover <NUM> further includes at least one bearing portion <NUM>. The bearing portion <NUM> and the fixing portion <NUM> are located on the same side of the exterior portion <NUM>. The bearing portion <NUM> includes a bearing sub-portion <NUM> and a connecting sub-portion <NUM>. The connecting sub-portion <NUM> is connected between the structural face <NUM> and the bearing sub-portion <NUM>. An extending direction of the connecting sub-portion <NUM> is different from that of the bearing sub-portion <NUM>. For example, the extending direction of the connecting sub-portion <NUM> is parallel to the Z-axis direction, and the extending direction of the bearing sub-portion <NUM> is perpendicular to the Z axis. In this case, a bearing groove <NUM> is formed among the structural face <NUM>, the bearing sub-portion <NUM>, and the connecting sub-portion <NUM>. The bearing groove <NUM> is configured to bear the functional device, such as the flash light <NUM> and/or the near field communication coil. As shown in <FIG> is a sectional view of the electronic device shown in <FIG> in a direction II' according to an embodiment of this application. The functional device includes, for example, an NFC coil <NUM>. A part of the NFC coil <NUM> is located in the bearing groove <NUM> and another part thereof is bent to a side of the bearing sub-portion <NUM> facing away from the structural face <NUM>, to implement press fit and elastic connection to the elastic piece <NUM> (which may be the BTB) of the main board <NUM>.

It should be noted herein that, the exterior portion <NUM> and the bearing portion <NUM> may be integrally formed. Alternatively, the bearing portion <NUM> may be fixed to the exterior portion <NUM> through welding or bonding.

It should be further noted that, when the functional device includes the NFC coil <NUM>, the manner of implementing press fit and elastic connection of the NFC coil <NUM> to the elastic piece of the main board <NUM> is not limited to bending a part of the NFC coil <NUM> to the side of the bearing sub-portion <NUM> facing away from the structural face <NUM>. Referring to <FIG> is another sectional view of the electronic device shown in <FIG> in the direction II according to an embodiment of this application. A part of NFC coil <NUM> is located in the bearing groove <NUM>, and another part thereof is directly arranged to implement press fit and elastic connection to the elastic piece <NUM> (which may be a connecting structure such as the BTB) located on a side of the bearing groove <NUM>. In this case, in order to ensure effectiveness of the NFC coil <NUM> press fit and elastic connection to the elastic piece <NUM>, a side of the NFC coil <NUM> facing away from the elastic piece <NUM> is further provided with the fixing portion <NUM>. The fixing portion <NUM> is used to implement press fit of the NFC coil <NUM>, to prevent the NFC coil <NUM> from separating from the elastic piece <NUM>.

It should be further noted that, in the description of the foregoing examples, the fixing portion <NUM> is configured to fix the BTB <NUM> and the NFC coil <NUM> and the bearing portion <NUM> is configured to bear the flash light <NUM> and the NFC coil <NUM>, but this does not constitute a limitation on this application. For any structure fixed and supported by a printed circuit board support, the battery cover may be correspondingly arranged to achieve the same function as the printed circuit board support. Since the battery cover <NUM> also functions as the printed circuit board support, the thickness of the battery cover <NUM> is the same as the thickness of the printed circuit board support, that is, a thickness of the mobile phone can be reduced by a thickness of at least one printed circuit board support, and a weight can be reduced, thereby facilitating a lightweight design of the electronic device. In addition, to-be-assembled structural members can be reduced, thereby reducing assembly costs. In addition, since the printed circuit board support is omitted, problems such as a failure of press fit to the BTB <NUM> caused by improper assembly of the support and a battery cover impression as a result of lifting of the battery cover by the support can be avoided. If a microphone needs to be arranged under the main board <NUM> or the small board <NUM>, which emits sounds through the decorative member <NUM>, since support channels can be reduced, a risk in sealing can be lowered. In addition, since the battery cover <NUM> has a sufficient area, layout and position limitations on the microphone are reduced.

In order to ensure the press fit effect of the fixing portion <NUM>, <FIG> and <FIG> are shown. <FIG> is a schematic structural diagram of another electronic device according to an embodiment of this application, and <FIG> is a sectional view of the electronic device shown in <FIG> in a direction DD' according to an embodiment of this application. The mobile phone further includes at least one fixing structure <NUM>. The fixing structure <NUM> is configured to fix the battery cover <NUM> and the main board <NUM>, to avoid a failure of press fit of the fixing portion <NUM> caused by a gap between the fixing portion <NUM> and a to-be-fixed structure as a result of dropping.

In a possible implementation, still referring to <FIG>, the fixing structure <NUM> includes a screw <NUM>. The screw <NUM> includes a screw cap <NUM> and a rod portion <NUM>. A threaded hole <NUM> is arranged on each of the exterior portion <NUM>, the main board <NUM>, and the middle frame <NUM>. The rod portion <NUM> of the screw <NUM> extends through the threaded holes <NUM> arranged on the exterior portion <NUM>, the main board <NUM>, and the middle frame <NUM> to lock and attach the battery cover <NUM> to the main board <NUM> and the main board <NUM> to the middle frame <NUM>, to realize integration of the battery cover <NUM>, the main board <NUM>, and the middle frame <NUM>.

In another possible implementation, referring to <FIG> is another sectional view of the electronic device shown in <FIG> in the direction DD' according to an embodiment of this application. The fixing structure <NUM> includes the screw <NUM>. The screw <NUM> includes the screw cap <NUM> and the rod portion <NUM>. The exterior portion <NUM> is provided with the threaded hole <NUM>. A nut <NUM> is attached to a surface of the main board <NUM>. The rod portion <NUM> of the screw <NUM> extends through the threaded hole <NUM> on the exterior portion <NUM> to be connected to the nut <NUM> on the main board <NUM>, so as to lock and attach the battery cover <NUM> to the main board <NUM>, thereby realizing integration of the battery cover <NUM> and the main board <NUM>.

In the foregoing two cases, still referring to <FIG>, the exterior portion <NUM> further includes at least one first groove <NUM>. The exterior portion <NUM> is partially recessed from the external face <NUM> in the Z-axis direction to form the first groove <NUM>, and the first groove <NUM> is in communication with the threaded hole <NUM> on the exterior portion <NUM>. The screw cap <NUM> of the screw <NUM> is located in the first groove <NUM>, to prevent the screw cap <NUM> from protruding from the external face <NUM>.

In order to make the screw <NUM> and corresponding structural features invisible from outside, the following solution is adopted. Still referring to <FIG>, the exterior portion <NUM> further includes a second groove <NUM>. The exterior portion <NUM> is partially recessed from the external face <NUM> in the Z-axis direction to form the second groove <NUM>. The second groove <NUM> has a larger size than the first groove <NUM> and is in communication with the first groove <NUM>. The housing assembly <NUM> further includes a shielding layer <NUM> arranged in the second groove <NUM>. In addition, an orthographic projection of the shielding layer <NUM> on a plane defined by the X and Y axes covers an orthographic projection of the screw <NUM> on the plane defined by the X and Y axes, to shield the exposed screw <NUM>.

It should be noted that, the size of the second groove <NUM> being greater than that of the first groove <NUM> means that an orthographic projection of the second groove <NUM> on the plane defined by the X and Y axes covers an orthographic projection of the first groove <NUM> on the plane defined by the X and Y axes. For example, when a shape of the orthographic projection of the second groove <NUM> on the plane defined by the X and Y axes and a shape of the orthographic projection of the first groove <NUM> on the plane defined by the X and Y axes are circles, a diameter of the second groove <NUM> is greater than a diameter of the first groove <NUM>.

In order to ensure stability of the shielding layer <NUM>, the housing assembly <NUM> further includes a third bonding layer <NUM> formed by using a back applied adhesive or by adhesive dispensing. The shielding layer <NUM> is fixed in the second groove <NUM> through the third bonding layer <NUM>.

A type of the shielding layer <NUM> is not limited in this embodiment of this application. A person skilled in this art may select a type according to actual situations. For example, the shielding layer <NUM> includes, for example, a lens, a PU leather, ceramic, plastic, or the like. When the shielding layer <NUM> includes the lens, the lens may be an ink-sprayed lens or a lens having a function of dazzling diaphragm. Certainly, the lens may alternatively be a transparent lens to meet demands of different users.

A position of the screw <NUM> is not limited in this embodiment of this application. A person skilled in the art may select a position according to actual situations.

For example, referring to <FIG> and <FIG>, <FIG> is a sectional view of the electronic device shown in <FIG> in a direction EE according to an embodiment of this application, and <FIG> is a sectional view of the electronic device shown in <FIG> in a direction FF' according to an embodiment of this application. The screw <NUM> is adjacent to the fixing portion <NUM>, to ensure effective press fit of the fixing portion <NUM>. In addition, the screw <NUM> is adjacent to the bearing portion <NUM>, to ensure a specific distance between the functional device borne by the bearing portion <NUM> and the main board <NUM> or the exterior portion <NUM>. In addition/alternatively, referring to <FIG> is a schematic structural diagram of another electronic device according to an embodiment of this application. The screw <NUM> is arranged at a position corresponding to the edge of the main board <NUM>. That is to say, the screw <NUM> is arranged in a targeted manner, to reduce a number of screws <NUM>, reduce costs, and reduce process steps.

It should be noted that, it may be learned from the foregoing content that the housing assembly <NUM> may be arranged on the middle frame <NUM> through the first bonding layer <NUM> or an engagement member. If sufficient screws <NUM> are arranged, the first bonding layer <NUM> or the engagement member may be omitted.

It should be further noted that, in the description of the foregoing examples, the fixing structure <NUM> includes the screw <NUM>, but this does not constitute a limitation on this application. Any fixing structure <NUM> providing a fixing effect and ensuring the press fit effect of the fixing portion <NUM> falls within the protection scope of the embodiments of this application. In some embodiments, the fixation implemented by using the fixing structure <NUM> may alternatively be implemented by using a snap, by adhesive dispensing, or by using a back applied adhesive.

In some possible implementations, in order to improve appearance quality of the mobile phone, referring to <FIG> is a schematic structural diagram of another electronic device according to an embodiment of this application. A plurality of second grooves <NUM> are in communication with each other to form an annular groove. The shielding layers <NUM> inside the second grooves <NUM> is a single-piece structure to form an annular shielding layer <NUM>. For example, the annular groove includes, for example, a circular groove. Correspondingly, the shielding layer <NUM> is a circular shielding layer, as shown in <FIG>. The annular groove includes, for example, a rectangular annular groove, and correspondingly, the shielding layer <NUM> is a rectangular annular shielding layer, as shown in <FIG> is a schematic structural diagram of another electronic device according to an embodiment of this application. The annular groove includes, for example, a square annular groove, and correspondingly, the shielding layer <NUM> is a square annular shielding layer, as shown in <FIG> is a schematic structural diagram of another electronic device according to an embodiment of this application.

In still some other possible implementations, referring to <FIG> is a schematic structural diagram of another electronic device according to an embodiment of this application. A plurality of third grooves <NUM> may be further independently arranged on the exterior portion <NUM>. The exterior portion <NUM> is partially recessed from the external face <NUM> in the Z-axis direction to form the third grooves <NUM>. Each of the third grooves <NUM>, for example, has the same size and shape as the second groove <NUM>. The third groove <NUM> is provided with the shielding layer <NUM>. A center of the shielding layer <NUM> located in the third groove <NUM> and a center of the shielding layer <NUM> located in the second groove <NUM> are arranged in an annular shape.

It should be noted that, the third groove <NUM> having the same size and the shape as the second groove <NUM> means that the orthographic projection of the second groove <NUM> on the plane defined by the X and Y axes has the same size and shape as the orthographic projection of the first groove <NUM> on the plane defined by the X and Y axes. For example, when a shape of an orthographic projection of the third groove <NUM> on a plane defined by the X and Y axes and the shape of the orthographic projection of the second groove <NUM> on the plane defined by the X and Y axes are circles, the diameter of the second groove <NUM> is equal to a diameter of the third groove <NUM>.

In addition, in order to further reduce the thickness of the electronic device, referring to <FIG> is another sectional view of the electronic device shown in <FIG> in the direction DD' according to an embodiment of this application. The decorative member body <NUM> and the skirt edge <NUM> of the decorative member <NUM> and the battery cover <NUM> are integrally formed. When the decorative member body <NUM> and the skirt edge <NUM> of the decorative member <NUM> and the battery cover <NUM> are integrally formed, an assembly space required for the decorative member <NUM> and the battery cover <NUM> is reduced, thereby reducing the thickness of the whole electronic device. In addition, an assembly gap between the decorative member <NUM> and the battery cover <NUM> is reduced, which realizes high precision and a desirable appearance. Moreover, liquid inlet paths of the decorative member <NUM> and the battery cover <NUM> are removed, which improves waterproof performance of the whole electronic device. In addition, the integral formation of the battery cover <NUM> and the decorative member <NUM> can increase strength of the battery cover and the decorative member, which can avoid a problem of an insufficient wall thickness of a part of the decorative member <NUM> in an extreme space, and prevent abnormal noise when the decorative member <NUM> is pressed.

A material of the battery cover <NUM> is not limited in this embodiment of this application. The exterior portion <NUM>, the fixing portion <NUM>, and the bearing portion <NUM> may be integrally formed, provided that the threaded hole <NUM>, the fixing portion <NUM>, the bearing portion <NUM>, the first groove <NUM>, the second groove <NUM>, and the third groove <NUM> may be formed. For example, the material of the battery cover <NUM> includes metal, plastic, or the like. When the fixing portion <NUM> and the bearing portion <NUM> are fixed to the exterior portion <NUM> through welding or bonding, the exterior portion <NUM> may be made of a single material, such as plastic or a fiberglass. The plastic includes polycarbonate (Polycarbonate, PC), polyamide (Polyamide, PA), and the like. The exterior portion may alternatively be made of a composite material, such as a combination of plastic and metal or a combination of plastic and ceramic. When the exterior portion <NUM> is made of the composite material, the material may be processed together, or may be fixed together through welding or bonding.

In addition, in the description of the foregoing examples, the battery cover <NUM> is a <NUM>. 5D (Dimensions, dimension) battery cover <NUM>, but this model of the battery cover <NUM> does not constitute a limitation on this application. In some embodiments, the battery cover <NUM> may be a 2D battery cover <NUM> (not shown in the figure), or may be a 3D battery cover <NUM>. For example, referring to <FIG> is another sectional view of the electronic device shown in <FIG> in the direction DD' according to an embodiment of this application. When the battery cover <NUM> is the 3D battery cover <NUM>, an arcing position of a 3D curved surface is not limited to a cover position of the shielding layer <NUM>. The shielding layer <NUM> may also adopt a 3D model. For example, the 3D battery cover <NUM> may be formed through injection molding, hot pressing, hot bending, or the like. If the 3D model is retained at a position having the screw <NUM>, flexible materials such as a PU leather may be selected as for the shielding layer <NUM>.

In addition, referring to <FIG> and <FIG>, <FIG> is a schematic structural diagram of a battery cover according to an embodiment of this application, and <FIG> is a sectional view of the battery cover shown in <FIG> in a direction GG' according to an embodiment of this application. The exterior portion <NUM> further includes a protruding structure <NUM> protruding from the external face <NUM>. The protruding structure <NUM> surrounds the decorative hole <NUM>. The protruding structure <NUM> includes a crater-shaped structure, which is a trumpet-shaped structure with a narrow top and a wide bottom. Certainly, the crater-shaped structure may alternatively be mounted to the decorative member body <NUM>. The arrangement of the crater-shaped structure further improves the appearance quality of the electronic device.

Claim 1:
An electronic device, comprising:
a middle frame (<NUM>);
a housing assembly (<NUM>), comprising a battery cover (<NUM>), wherein the battery cover (<NUM>) is arranged on the middle frame (<NUM>); and
a printed circuit board (<NUM>), located between the battery cover (<NUM>) and the middle frame (<NUM>), wherein the battery cover (<NUM>) also functions as a printed circuit board support;
the battery cover (<NUM>) comprises an exterior portion (<NUM>), and the exterior portion (<NUM>) comprises an external face (<NUM>) and a structural face (<NUM>) facing away from the external face (<NUM>);
the battery cover (<NUM>) further comprises at least one fixing portion (<NUM>), and the fixing portion (<NUM>) is located on a side of the structural face (<NUM>) facing away from the external face (<NUM>); and/or
the battery cover (<NUM>) further comprises at least one bearing portion (<NUM>), the bearing portion (<NUM>) is located on the side of the structural face (<NUM>) facing away from the external face (<NUM>), the bearing portion (<NUM>) comprises a bearing sub-portion (<NUM>) and a connecting sub-portion (<NUM>), the connecting sub-portion (<NUM>) is connected between the structural face (<NUM>) and the bearing sub-portion (<NUM>), and an extending direction of the connecting sub-portion (<NUM>) is different from an extending direction of the bearing sub-portion (<NUM>), so that a bearing groove (<NUM>) is formed among the structural face (<NUM>), the bearing sub-portion (<NUM>), and the connecting sub-portion (<NUM>), the electronic device further comprising at least one fixing structure (<NUM>) configured to fix the battery cover (<NUM>) and the printed circuit board (<NUM>), wherein the fixing structure (<NUM>) comprises a screw (<NUM>), and the screw (<NUM>) comprises a screw cap (<NUM>) and a rod portion (<NUM>);
a threaded hole (<NUM>) is arranged on the battery cover (<NUM>); and
the rod portion (<NUM>) of the screw (<NUM>) extends through the threaded hole (<NUM>) on the battery cover (<NUM>) to fix the battery cover (<NUM>) to the printed circuit board (<NUM>).