Patent Description:
Some electronic devices (such as mobile phones and tablet computers) in the market are well received by consumers, and generally have front photographing functions. To achieve more better self-timer functions and better effects of front cameras, two front cameras (namely, a front main camera and a front wide-angle camera) are required to be used in the front of an electronic device, thereby leading to formation of a notch screen. To reduce a length of the notch screen and improve an optimal effect of a front appearance of the electronic device, a gap between the two front cameras is required to be minimized. Therefore, it is difficult to dispose a support structure between the two front cameras. However, if there is no support structure between the two front cameras, a reliability test of mobile phone roll drop tester will easily cause transmission of an impact force to the front cameras. This will lead to a failure of a function of the two front cameras and even damage to the electronic device.

<CIT> relates to discloses a camera module and an electronic device, wherein the camera module comprises a support which is provided with a first installation space; a first camera which is arranged in the first mounting space in a penetrating manner; and an elastic frame which is connected with the support and of which at least part is located in the first installation space, wherein the elastic frame elastically abuts against the first camera in the first installation space, or the elastic frame is connected with the first camera, at least part of the elastic frame is located in the first installation space, and the elastic frame elastically abuts against the support on the inner wall face of the first installation space in the first installation space; the side, away from the elastic frame, of the first camera abuts against the inner wall face, on the first installation space, of the support under the acting force of the elastic frame.

<CIT> provides an optical actuator, a corresponding camera module and a camera module array. The present invention provides an optical actuator comprising: a substrate; a lens module which comprises two first side surfaces which are opposite to each other; a plurality of shape memory alloy wires form two wire groups which form two wire groups, wherein the two wire groups are respectively arranged on the two first side surfaces. Two ends of each shape memory alloy wire are respectively fixed on a substrate end fixing device and a lens end fixing device. The direction of a resultant force of the two wire groups acting on the lens module is consistent with the direction of the optical axis of the lens module, so that the lens module is driven to move along the direction of the optical axis of the lens module through the extension and retraction of the shape memory alloy wires of the two wire groups.

Embodiments of this application disclose an electronic device and a method for mounting a support member of the electronic device, to resolve a problem that a front camera cannot work normally because a support structure cannot be disposed, making the front camera easy to deform.

The technical solutions used in this application can achieve the following beneficial effects.

In the electronic device disclosed according to the embodiments of this application, the support member is connected to the main board support, and at least the part, away from the main board support, of the support member is made of the shape memory alloy. Therefore, before the part of the support member is deformed to be in the first shape, the part of the support member penetrates into the gap between the first camera and the second camera, and after the support member is deformed to be in the second shape, the formed second support part can abut against the first support part of the main board upper-cover. In this way, in a case that the gap between the first camera and the second camera is minimized, the support member can partially penetrate into the gap. In addition, the support member can be deformed after partially penetrating into the gap to increase a contact area with the first support part of the main board upper-cover, improving support stability. Furthermore, an accumulated tolerance formed by fastening the support member and the main board support and an accumulated tolerance formed by assembling the main board support and main board upper-cover can be eliminated. Therefore, a good support effect can be achieved when the gap between the two front cameras is relatively narrow, and a problem that two front cameras cannot work normally because the two front cameras are squeezed when the main board support is subject to a force can be alleviated.

The accompanying drawings described herein are intended to provide a further understanding of this application, and constitute a part of this application. Example embodiments of this application and descriptions thereof are intended to describe this application, and do not constitute limitations on this application. In the accompanying drawings:.

Reference numerals in the accompanying drawings are as follows:.

To make the objectives, technical solutions, and advantages of this application clearer, the following clearly describes the technical solutions of this application with reference to the specific embodiments of this application and the corresponding accompanying drawings. Apparently, the described embodiments are merely some rather than all of embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on embodiments of this application without creative efforts shall fall within the protection scope of this application.

Layout of two front cameras in an electronic device in related technologies is shown in <FIG>. <NUM> is a front main camera with high pixels, and is mainly responsible for a front photographing function. <NUM> is a front wide-angle camera, and is mainly responsible for a super-large wide-angle photographing function to satisfy more user requirements. To minimize a length of a notch screen and improve an optimal effect of a front appearance, a gap between the two front cameras is required to be minimized. As can be seen from <FIG>, a gap between the front main camera and the front wide-angle camera is relatively small. <NUM> is a main board support configured to support and protect two front cameras. In <FIG>, a left support of the main board support <NUM> is on a main board, and a right support is on a main board upper-cover <NUM>. However, due to a relatively small gap between the two front cameras, a support structure cannot be disposed. <NUM> is a plate-shaped battery cover with weak strength and is easy to deform, and is pasted on a main board lower-cover. <NUM> is the main board upper-cover, and is configured to fasten the two front cameras and support the main board, the main board support, and the main board lower-cover.

Based on the foregoing disposing, when the plate battery cover <NUM> is subject to an external force, the plate battery cover <NUM> is greatly deformed due to weak strength of the plate battery cover, so that the force is directly transmitted to the main board support <NUM>. Because a support structure cannot be disposed between the two front cameras, the main board support <NUM> can transmit the force only to the two front cameras. Accordingly, the two front cameras are deformed under the force, leading to a sharp increase in a risk of cracking of a photosensitive chip and filter, further leading to a failure of normal working of the two front cameras.

To resolve the foregoing technical problem, the inventor proposes a technical solution in this application. The technical solutions disclosed in embodiments of this application are described in detail below with reference to the accompanying drawings.

Referring to <FIG>, embodiments of this application disclose an electronic device. The disclosed electronic device includes a main board support <NUM>, a main board upper-cover <NUM>, a first camera <NUM>, a second camera <NUM>, and a support member <NUM>.

The main board support <NUM> is a basic member of the electronic device, and the main board support <NUM> can provide a mounting foundation for some members in the electronic device. In an embodiment of this application, the first camera <NUM> and the second camera <NUM> are both disposed inside the main board support <NUM>. The first camera <NUM> and the second camera <NUM> are supported and protected by using the main board support <NUM>.

The main board upper-cover <NUM> is a fastening member of the electronic device, and the main board upper-cover <NUM> can be configured to fasten and support some members. In an embodiment of this application, the main board upper-cover <NUM> is configured to fasten the first camera <NUM> and the second camera <NUM>, and to support a main board <NUM>, the main board support <NUM>, and a main board lower-cover.

In some embodiments, one side of the main board support <NUM> is supported on the main board <NUM> of the electronic device, while the main board <NUM> is supported on the main board upper-cover <NUM>, and the other side of the main board support <NUM> is directly supported on the main board upper-cover <NUM>. In this way, a cavity is formed between the main board support <NUM> and the main board upper-cover <NUM>. The first camera <NUM> and the second camera <NUM> are disposed in parallel in the cavity, to mount and fasten the two cameras through the main board support <NUM> and the main board upper-cover <NUM>.

Further, the main board upper-cover <NUM> has a first support part <NUM>. The first support part <NUM> extends into the cavity and divides the cavity into two small cavities. The first camera <NUM> is embedded into one of the small cavities, and the second camera <NUM> is embedded in the other of the small cavities, to mount and fasten the two cameras through the two small cavities. In some embodiments, the first camera <NUM> is a front main camera with high pixels, and is mainly responsible for a front photographing function. The second camera <NUM> is a front wide-angle camera, and is responsible for a super-large wide-angle photographing function, to satisfy more photographing requirements of a user. In addition, a gap M is formed between the first camera <NUM> and the second camera <NUM>.

To alleviate damage to a camera module due to a force exerted on one side of the main board support <NUM>, the support member <NUM> is connected to the main board support <NUM>. At least a part, away from the main board support <NUM>, of the support member <NUM>, is made of a shape memory alloy, and at least a part, away from the main board support <NUM>, of the support member <NUM>, is deformable between a first shape and a second shape. In the first shape, at least a part, away from the main board support <NUM>, of the support member <NUM> can extend into the gap M. In the second shape, at least a part, away from the main board support <NUM>, of the support member <NUM> forms a second support part <NUM>. The second support part <NUM> abuts against the first support part <NUM> of the main board support <NUM>. In addition, along a distribution direction of the first camera <NUM> and the second camera <NUM>, a size of the second support part <NUM> is larger than that of the gap M. Therefore, support between the main board support <NUM> and the main board upper-cover <NUM> is implemented by the support member <NUM>, which can effectively resolve a problem of damage to a camera module due to a force exerted on a central region of the main board support <NUM>.

At least a part, away from the main board support <NUM>, of the support member <NUM>, is made of the shape memory alloy. The shape memory alloy is an alloy through martensitic phase transformation with regular atomic arrangement and a volume change less than <NUM>%. This alloy will deform under the action of an external force. When the external force is removed, the alloy can restore to an original shape of the alloy at a temperature. Because this alloy has more than one million times of restoration functions, this alloy is called a "memory alloy" or "shape memory alloy", that is, the shape memory alloy. The shape memory alloy has advantages of non-magnetism, wear resistance, corrosion resistance, and non-toxicity, and has been widely used. At present, the shape memory alloy has been widely used in electronic instruments, an automobile industry, medical instruments, space technologies, energy development, and other fields, such as making temperature control devices, temperature control circuits, and aircraft aerial refueling interfaces. At present, dozens of alloys with different memory functions have been found, including a nickel-titanium alloy, gold-cadmium alloy, copper-zinc alloy, and the like.

The shape memory alloy (Shape Memory Alloys, SMA) is an alloy material that can completely eliminate deformation of the shape memory alloy at lower temperature after heated, and restore to an original shape before deformation, that is, an alloy with a "memory" effect. The shape memory alloy is widely used in an aerospace field. For example, huge antennas on an artificial satellite may be made of the shape memory alloy. Before the artificial satellite is launched, a parabolic antenna is folded and put into the artificial satellite. After a rocket is launched and transports the artificial satellite to a predetermined orbit, the antenna needs to be heated only. The folded antenna for the satellite is naturally unfolded because of a "memory" function, and restore to a shape of parabolic surface. For example, a bent shape memory alloy spoon will straighten when placed in hot water, and bend again when placed in cold water.

It can be known, based on a characteristic of the shape memory alloy, as shown in <FIG>, that the support member <NUM> is in a first shape at low temperature. In this shape, the support member <NUM> can penetrate into the gap M and extend toward the first support part <NUM>. This can ensure that the support member <NUM> can smoothly penetrate into the gap M without colliding with a side wall of the first camera <NUM> or a side wall of the second camera <NUM>, achieving a good assembly effect. As shown in <FIG>, at relatively high temperature, the support member <NUM> is partially deformed to be in a second shape. That is, the second support part <NUM> is formed at one end, away from the main board support <NUM>, of the support member <NUM>. In addition, along a distribution direction of the first camera <NUM> and the second camera <NUM>, a size of the second support part <NUM> is larger than that of the gap M between the first camera <NUM> and the second camera <NUM>. In this way, when the second support part <NUM> abuts against the first support part <NUM> of the main board upper-cover <NUM>, a contact area between the support part <NUM> and the first support part <NUM> is increased. In addition, a size of the support part <NUM> changes to a certain extent due to local deformation, so that a tolerance formed by connection between the support part <NUM> and the main board support <NUM> and a tolerance formed by assembly between the main board support <NUM> and the main board upper-cover <NUM> can be eliminated effectively, further greatly improving a support effect of the support part <NUM>.

In the electronic device disclosed in the embodiments of this application, to reduce a length of a notch screen, the gap M between the first camera <NUM> and the second camera <NUM> is relatively small. In this case, the support member <NUM> is in the first shape and can smoothly penetrate into the gap M. After the support member <NUM> penetrates into the gap M, the support member <NUM> is partially deformed to form the second support part <NUM> to be in the second shape. In this case, the support member <NUM> abuts against the first support part <NUM> through the second support part <NUM>, increasing a support area and achieving a good support effect.

It should be noted that the gap M between the first camera <NUM> and the second camera <NUM> can be penetrated only by the support member <NUM> in the first shape, but not by the support member <NUM> in the second shape. That is, along the distribution direction of the first camera <NUM> and the second camera <NUM>, the size of the support member <NUM> in the first shape is not larger the size of the gap M, and the size of the support member <NUM> in the second shape is larger than the size of the gap M. In addition, the support member <NUM> may be made of the shape memory alloy as a whole, a part, extending into the gap M, of the support member <NUM>, may be made of the shape memory alloy, or a part, configured to abut against the first support part <NUM>, of the support member <NUM> may be made of the shape memory alloy. Deformation of the support member <NUM> is determined according to several times of cold and hot cycle training. For a specific principle, refer to related technologies.

In a specific implementation, refer to <FIG>. A support member <NUM> is made of sheet metal stamping parts, and In some embodiments includes a fastened plate <NUM> and a support plate <NUM>. The fastened plate <NUM> and support plate <NUM> are integrally disposed or connected with each other. An angle is provided between the fastened plate <NUM> and support plate <NUM>. The fastened plate <NUM> is connected to a main board support <NUM> in a fastening manner, a second support part <NUM> is located at one end, away from the fastened plate <NUM>, of the support plate <NUM>. In some embodiments, the fastened plate <NUM> may be directly welded to the main board support <NUM>, for example, the fastened plate <NUM> and the main board support <NUM> are welded together by spot welding. Definitely, in consideration of welding accuracy, welding firmness, welding efficiency improvement, and the like, a positioning protrusion <NUM> may be disposed on a side, away from a main board upper-cover <NUM>, of the main board support <NUM>. A shape of the positioning protrusion <NUM> may be optional, such as cylindrical, prismatic, or hemispherical. Correspondingly, a positioning hole <NUM> is provided in the fastened plate <NUM>. A shape of the positioning hole <NUM> is adapted to the positioning protrusion <NUM>. In this manner, when the fastened plate <NUM> is mounted, first, the positioning hole <NUM> in the fastened plate <NUM> are sleeved on the positioning protrusion <NUM> on the main board support <NUM>. Then, the fastened plate is fastened by spot welding. In addition, a quantity of the positioning protrusions <NUM> may be arbitrary as long actual requirements are satisfied, and is not limited herein.

The support plate <NUM> may be connected, in a fastening manner, to the fastened plate <NUM> by spot welding, and an angle is provided between the support plate <NUM> and the fastened plate <NUM>. Because a longitudinal extension direction of a gap M is opposite to or approximately perpendicular to the main board support <NUM>, when the fastened plate <NUM> is welded and fastened to the main board support <NUM>, to enable the support plate <NUM> to penetrate into the gap M, the support plate <NUM> and the fastened plate <NUM> are designed to be perpendicular to each other. In this way, fastened connection between the fastened plate <NUM> and the main board support <NUM> can be ensured, and the support plate <NUM> can smoothly penetrate into the gap M without touching a side wall of the two front cameras. Further, the fastened plate <NUM> is an L-shaped plate. The support plate <NUM> is connected to one outer side edge of the L-shaped plate in a fastening manner, and the support plate <NUM> and the fastened plate <NUM> are perpendicular to each other.

The second support part <NUM> is located at one end, away from the fastened plate <NUM>, of the support plate <NUM>. When the main board support <NUM> is assembled with the main board upper-cover <NUM>, the support plate <NUM> is partially located in the gap M, and an end, away from the fastened plate <NUM>, of the support plate <NUM>, is deformed to form the second support part <NUM>. The second support part <NUM> supports on a first support part <NUM> of the main board upper-cover <NUM>. Therefore, a contact area is increased, and a good supporting effect on a middle region of the main board support <NUM> is ensured.

A shape memory alloy may be divided into the following categories.

A first category: a one-way memory effect: a shape memory alloy is deformed at relatively low temperature and can restore to a shape before deformation after heated. This shape memory phenomenon existing only during heating is called the one-way memory effect.

A second category: a two-way memory effect: a shape memory alloy can restore to a shape for a high-temperature phase when heated, and can recover a shape for a low-temperature phase when cooled, which is called the two-way memory effect.

A third category: a whole-course memory effect: a shape memory alloy can restore to a shape for a high-temperature phase when heated, and become a shape for a low-temperature phase with a same shape but opposite orientations when cooled, which is called the whole-course memory effect.

In an embodiment of this application, the support member <NUM> is made of the shape memory alloy with the two-way memory effect. This type of shape memory alloy can restore to the shape for the high-temperature phase when heated and the shape for the low-temperature phase when cooled. In some embodiments, when the support plate <NUM> is at low temperature, according to a characteristic of the shape memory alloy, the support plate <NUM> is in the shape for a low-temperature phase, and the support plate <NUM> is in a flat shape (that is, the foregoing first shape). As shown in <FIG>, when the main board support <NUM> is assembled to the main board upper-cover <NUM>, the support plate <NUM> in the flat shape can smoothly penetrate into the gap M between the first camera <NUM> and the second camera <NUM>. Accordingly, the support plate <NUM> is effectively prevented from colliding with a side wall of the first camera <NUM> or a side wall of the second camera <NUM> during penetration, and a good assembly effect is further achieved. When the support plate <NUM> is at high temperature, based on the characteristic of the shape memory alloy, the support plate <NUM> is deformed and bent to form a flange edge (that is, the foregoing second shape), as shown in <FIG>. In this case, because the support plate <NUM> is bent to one side to form the flange edge, when the flange edge abuts against the first support part <NUM>, a contact area with the first support part <NUM> can be greatly increased. In addition, because local bending of the support plate <NUM> can eliminate a tolerance of the whole support member <NUM> for connecting to the main board support <NUM>, a support effect between the support member <NUM> and the first support part <NUM> of the main board upper-cover <NUM> is improved, ensuring support stability. Further, the support plate <NUM> is bent into the L shape, to increase the contact area with the first support part <NUM>.

It should be noted that no functional and appearance problem occurs on a whole electronic device, such as a mobile phone at a temperature of -<NUM> to <NUM>. Therefore, a temperature for phase transformation of the shape memory alloy should be controlled between -<NUM> and <NUM>, including -<NUM>, -<NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM> C, and the like. Understandably, the temperature may further include another degree, which is not limited herein. Based on the foregoing temperature range for phase transformation, a nickel-titanium shape memory alloy may be selected as the shape memory alloy. A temperature for a low-temperature phase of the nickel-titanium shape memory alloy is about -<NUM>, and a temperature for a high-temperature phase of the nickel-titanium shape memory alloy is <NUM> to <NUM>, which satisfies actual requirements. Definitely, the shape memory alloy is not limited to the nickel-titanium memory alloy, but may be other shape memory alloys that satisfy practical requirements.

In a specific implementation, still refer to <FIG>. The support plate <NUM> is in a flat shape at low temperature. In this case, the support plate <NUM> has a flat plate structure, and the support plate <NUM> is deformed at high temperature, to form a flange edge at one end away from the fastened plate <NUM>. In this case, along a distribution direction of the first camera <NUM> and the second camera <NUM>, a ratio of a size of the flange edge to a size of the flat structure is not less than <NUM>. The size of the flange edge is an extended width size of the flange edge, and the size of the flat structure is a thickness size of the flat structure. In some embodiments, at low temperature, the support plate <NUM> is in the flat shape. In this case, the support plate <NUM> may be regarded as a material thickness, and a gap M between the first camera <NUM> and the second camera <NUM> is slightly larger than the material thickness. Accordingly, a minimum length of a notch screen can be ensured, and a support structure can be disposed between the main board support <NUM> and the main board upper-cover <NUM>. At high temperature, one end, away from the fastened plate <NUM>, of the support plate <NUM> is bent to form the flange edge. In this case, the size of the flange edge is not less than two material thicknesses, such as two material thicknesses or three material thicknesses, to increase the contact area with the first support part <NUM> and improve a support effect.

To prevent the support plate <NUM> from forming a relatively large gap with the first support part <NUM> after the support plate is bent at high temperature, in this embodiment of this application, there is a slight overlapping region between an end, away from the fastened plate <NUM>, of the support plate <NUM> at low temperature and the first support part <NUM>, as shown in <FIG>. In some embodiments, at low temperature, the support plate <NUM> is in a flat shape. In this case, if the main board support <NUM> connected to the support member <NUM> is assembled to the main board upper-cover <NUM>, the end, away from the fastened plate <NUM>, of the support plate <NUM> abuts against the first support part <NUM>, so that the support member <NUM> is slightly lifted, that is, the support plate <NUM> has some redundancy. At high temperature, bending of the support plate <NUM> will shorten a total length of the support plate <NUM>. Because the support plate <NUM> in a flat shape has some redundancy relative to the first support part <NUM>, even if the support plate <NUM> is bent, a flange edge formed after bending can also abut against the first support part <NUM>, so that it can be prevented that no support effect can be generated because of a relatively large gap.

In a specific implementation, the main board support <NUM> is made of stainless steel. In some embodiments, the main board support <NUM> is made of a SUS304 <NUM>/<NUM> material with good corrosion resistance and sufficient hardness and strength, to support and protect the first camera <NUM> and the second camera <NUM>. Further, the main board support <NUM> is formed by stainless steel in-mold injection molding, that is, stainless steel stamping and plastic mold injection molding. Definitely, considering that the fastened plate <NUM> and the main board support <NUM> are fastened by welding, a region on the main board support <NUM> configured to be connected to the fastened plate <NUM> in a fastening manner is made of stainless steel, thereby ensuring fastened connection by spot welding between the fastened plate <NUM> and the main board support <NUM>.

In a specific implementation, the fastened plate <NUM> of the support member <NUM> is connected to a side surface, away from the main board upper-cover <NUM>, of the main board support <NUM> in a fastening manner. To enable the support plate <NUM> to penetrate into the gap M, a through hole <NUM> is provided in the main board support <NUM>. The support plate <NUM> can penetrate through the through hole <NUM> and extend into the gap M, so that an end, away from the fastened plate <NUM>, of the support plate <NUM> can abut against the first support part <NUM>, as shown in <FIG>.

Understandably, in another embodiment, the support member <NUM> may also be connected to a side, facing the main board upper-cover <NUM>, of the main board support <NUM>. In this case, the support member <NUM> is located, relative to the main board support <NUM>, on a same side of the main board support <NUM> with the gap M, so that actual assembly requirements can be satisfied without providing the through hole <NUM> in the main board support <NUM>.

In an optional implementation, the main board upper-cover <NUM> further has a third support part <NUM> and a fourth support part <NUM> respectively disposed on a left side and a right side of the main board upper-cover <NUM>. The third support part <NUM> and the first support part <NUM> are located on two sides of the first camera <NUM>. The two sides of the first camera <NUM> are limited by the third support part <NUM> and the first support part <NUM>. The first camera <NUM> is supported and mounted in combination with the main board support <NUM> and the main board upper-cover <NUM>. The fourth support part <NUM> and the first support part <NUM> are located on two sides of the second camera <NUM>. The two sides of the second camera <NUM> are limited by the fourth support part <NUM> and the first support part <NUM>. The second camera <NUM> is supported and mounted in combination with the main board support <NUM> and the main board upper-cover <NUM>. In addition, one side of the main board support <NUM> is supported on a main board <NUM>. The main board <NUM> is supported on the third support part <NUM>. The other side of the main board support <NUM> is supported on the fourth support part <NUM>. A middle part of the main board support <NUM> is supported on the first support part <NUM> through the support member <NUM>. In this manner, the main board support <NUM> is supported by the main board upper-cover <NUM>, the main board <NUM>, and the support member <NUM>, thus effectively preventing a front camera from being damaged when the front camera module is squeezed after the main board support <NUM> is subject to a force, and ensuring normal use of the front camera module.

In an optional implementation, a battery cover <NUM> is disposed on a side, away from the main board upper-cover <NUM>, of the main board support <NUM>. The battery cover <NUM> is a plate member with relatively weak strength, is soft and easy to deform, and is pasted to a main board lower-cover. When the battery cover <NUM> is subject to an external force, due to weak strength and relatively large deformation, the force is directly transmitted to the main board support <NUM>, to the support member <NUM> through the main board support <NUM>, and to the main board upper-cover <NUM> through the support member <NUM>, so that the force is not transmitted to the first camera <NUM> or the second camera <NUM>, thus ensuring that the first camera <NUM> and the second camera <NUM> are not damaged.

An embodiment of this application discloses a method for mounting the support member <NUM> in the electronic device. The method includes:.

In some embodiments, a positioning hole <NUM> in a fastened plate <NUM> is sleeved on a positioning protrusion <NUM> on the main board support <NUM>, and then spot welding is performed to fasten the support member <NUM> on the main board support <NUM>.

To cool the support member <NUM>, the support member <NUM> can be placed in liquid nitrogen or a low temperature can be transferred to the support member <NUM> by contacting a cold source, so as to decrease a temperature of the support member <NUM> to a first preset temperature and enable the support member <NUM> to be in a low-temperature phase. In this case, a support region of the support member <NUM> is in a first shape, that is, the flat shape, to prepare for subsequent assembly. The first preset temperature may be determined according to a type of a selected shape memory alloy. For example, when a nickel-titanium shape memory alloy is selected, the first preset temperature is about -<NUM>, to ensure that the support region of the support member <NUM> is in the flat shape before assembly.

When the support region of the support member <NUM> is in the flat shape, the main board support <NUM> connected to the support member <NUM> is assembled to the main board upper-cover <NUM>. During assembly, because the support region of the support member <NUM> is in the flat shape, the support region can smoothly penetrate into a relatively narrow gap M formed between the first camera <NUM> and the second camera <NUM>, effectively preventing the support member <NUM> from colliding with a side wall of the first camera <NUM> or a side wall of the second camera <NUM>, and achieving a good assembly effect.

When the support region of the support member <NUM> penetrates into the gap M between the first camera <NUM> and the second camera <NUM>, the support member <NUM> is heated, so that a high temperature can be transferred to the support member <NUM> by contacting with a heat source, to enable a temperature of the support member <NUM> to be increased to a second preset temperature and enable the support member <NUM> to be in a high-temperature phase. In this case, the support region of the support member <NUM> is in a second shape, that is, is bent and deformed to form the second support part <NUM>. The support region of the support member <NUM> in a bent shape abuts against the first support part <NUM>. Therefore, a contact area between the support member <NUM> and the first support part <NUM> is increased, and a good support effect is achieved. The second preset temperature may be determined according to a type of a selected shape memory alloy. For example, when the nickel-titanium shape memory alloy is selected, the second preset temperature is <NUM> to <NUM>, to increase the contact area between the support member <NUM> and the first support part <NUM> supporting an upper cover after assembly and improve support stability.

To sum up, in the embodiments of this application, the support member <NUM> is at least partially made of the shape memory alloy. A shape of the shape memory alloy can change at different temperatures to achieve different effects. At low temperature, the support region of the support member <NUM> connected to the main board support <NUM> is in the shape for a low-temperature phase, with a relatively small thickness. Accordingly, a good assembly effect can be achieved in a case of a relatively narrow gap between the first camera <NUM> and the second camera <NUM>. At normal temperature or high temperature, the support area of the support member <NUM> connected to the main board support <NUM> is in a shape for a high-temperature phase, so that a thickness of the support member <NUM> is relatively large. Therefore, the contact area with the first support part <NUM> supporting the upper cover is increased, and an accumulated tolerance formed by fastening and an accumulated tolerance formed by assembling the support member <NUM> are eliminated. Accordingly, a good support effect is achieved in a case of a relatively narrow gap between the first camera <NUM> and the second camera <NUM>.

The electronic device in the embodiments of this application includes a mobile phone, a tablet computer, and the like, and a specific type is not limited.

Claim 1:
An electronic device, comprising: a main board support (<NUM>), a main board upper-cover (<NUM>), a first camera (<NUM>), and a second camera (<NUM>), wherein
a cavity is enclosed between the main board support (<NUM>) and the main board upper-cover (<NUM>), the first camera (<NUM>) and the second camera (<NUM>) are both disposed in the cavity, and a gap (M) is formed between the first camera (<NUM>) and the second camera (<NUM>);
the main board upper-cover (<NUM>) has a first support part (<NUM>);
characterized in that the first support part (<NUM>) is located between the first camera (<NUM>) and the second camera (<NUM>) and extends toward the gap (M);
the electronic device further comprises a support member (<NUM>), wherein the support member (<NUM>) is connected to the main board support (<NUM>), at least a part, away from the main board support (<NUM>), of the support member (<NUM>) is made of a shape memory alloy, and at least the part, away from the main board support (<NUM>), of the support member (<NUM>) is deformable between a first shape and a second shape, wherein in the first shape, at least the part, away from the main board support (<NUM>), of the support member (<NUM>) is located in the gap (M), in the second shape, at least the part, away from the main board support (<NUM>), of the support member (<NUM>) forms a second support part (<NUM>), and the second support part (<NUM>) abuts against the first support part (<NUM>), and along a distribution direction of the first camera (<NUM>) and the second camera (<NUM>), a size of the second support part (<NUM>) is larger than that of the gap (M).