CN113451739A

CN113451739A - Electronic device

Info

Publication number: CN113451739A
Application number: CN202010219885.XA
Authority: CN
Inventors: 游玉霖; 张友良; 尤佳庆; 沈来伟; 谭小兵
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2021-09-28

Abstract

The application relates to the technical field of electronic products, in particular to electronic equipment, which comprises a middle frame, a first connecting piece and a second connecting piece, wherein the middle frame comprises a middle part, and the middle part comprises a metal piece; the middle frame is an insulating part; the frame comprises a metal piece, the middle frame is arranged between the middle part and the frame, and the frame is provided with at least 1 notch; the reinforcing part is arranged on the middle frame and comprises a metal piece, the reinforcing part is not in contact with the metal piece of the frame and is not in contact with the metal piece of the middle part, and the projection of the plane where the frame is located of the reinforcing part at least covers the notch. By means of the electronic equipment, the antenna layout requirements can be met, the performance of the antenna can be guaranteed, the structural strength of the corresponding position can be guaranteed, and the reliability of the whole machine is guaranteed.

Description

Electronic device

Technical Field

The application relates to the technical field of electronic products, in particular to an electronic device.

Background

The traditional mobile phone antenna is generally positioned at the top and the bottom of a mobile phone, in recent years, with the development of a full-screen mobile phone and the increasing demand of hardware for photographing, more cameras need to be placed in a limited mainboard space, the size of the cameras is larger and larger, and the available space at the top and the bottom of the antenna is gradually reduced. Meanwhile, since more number of antennas are required for 5G communication, the space at the top and bottom of the mobile phone is insufficient to place all antennas. And, in prior art, in order to satisfy the demand of placing of more antennas on the basis of placing more cameras, can arrange the antenna on antenna boom, on fashioned plastics antenna boom promptly, utilize laser technology directly to change the plating on antenna boom and form metal antenna, and this kind of mode needs the plastic space of great area, make the shared volume of antenna boom great, when installing in the cell-phone, cause the conflict on the mainboard space easily, make the thickness of cell-phone increase, be unfavorable for present frivolous design theory. And if on the premise of making the mobile phone light and thin, the layout requirements of more antennas can be met, the antennas can be excessively framed, and under the scene that the side antenna slots must be added, the problem of insufficient strength of the middle frame caused by the increase of the side slots is solved, so that the reliability problems of complete machine cracking, poor air tightness and the like are caused.

Disclosure of Invention

An object of this application is to provide an electronic equipment, when can satisfying more antenna layout demands and can guarantee the performance of antenna, can guarantee the structural strength of relevant position, ensure the reliability of complete machine.

The application provides an electronic device, which comprises a middle frame, a first connecting piece, a second connecting piece and a connecting piece, wherein the middle frame comprises a middle part, and the middle part comprises a metal piece; the middle frame is an insulating part; the frame comprises a metal piece, the middle frame is arranged between the middle part and the frame, and the frame is provided with at least 1 notch; the reinforcing part is arranged on the middle frame and comprises a metal piece, the metal piece of the reinforcing part is not in contact with the metal piece of the frame, the metal piece of the reinforcing part is not in contact with the metal piece of the middle part, and the projection of the plane where the frame is located of the reinforcing part at least covers the notch.

Through the setting of rib, when the frame receives the effort from the outside, act on effort F1, effort F2 of one of them side of breach or both sides, under this effort, the metal that the frame that is located the breach position is connected with the middle frame and the joint department of plastic easily produces fracture or dislocation, and through the rib that sets up, be connected with the middle frame, the performance of its metal provides reverse effort F3 for it, help avoiding the middle frame of plastic to warp, in order to be used for overcoming external force, avoid when receiving the external force effect, dislocation or fracture appear in the junction of breach position, improve holistic rigidity.

In one possible design, the reinforcing part has a first end part and a second end part along the length direction of the reinforcing part, and the notch is arranged to enable the frame to have a first notch surface and a second notch surface;

the first end portion and the second end portion are located on two sides of the notch, and the distance from the first end portion to the first notch face is the same as the distance from the second end portion to the second notch face.

Better supporting effect can be played in order to guarantee the rib that sets up, improve the intensity of structure, on the basis that the assurance rib can cover the breach, can guarantee when receiving external effort, the reverse effort that comes from the rib can be accepted to breach and bellying complex position, because the relative breach symmetrical arrangement mode of length direction is followed to the rib, has improved the stability of atress, guarantees the better intensity of breach position connection.

In one possible design, the first notch surface and the second notch surface are arranged in parallel, and the first notch surface is perpendicular to the length direction of the reinforcing part.

Through the length direction mutually perpendicular's of breach face and rib setting to guarantee the stability of interaction force, improve the intensity effect of rib.

In a possible design, the reinforcing portion includes a body portion, the body portion is an elongated structure, and a minimum distance from the body portion to the frame is 0.5mm to 5 mm.

When the body part is ensured to play the effect of increasing the strength, the strength of the antenna is not influenced.

In one possible design, the minimum distance of the reinforcement to the rim is greater than 1 mm.

In order to cut off the connecting block through the cutter, the minimum thickness of the cutter is 1mm, so that the minimum distance from the reinforcing part to the frame is greater than 1mm, and the smooth work of the cutter can be ensured.

In one possible design, the middle frame is provided with an opening along the thickness direction of the side frame, and the reinforcing part is embedded in the opening.

This kind of embedded complex structure through trompil, on the one hand, can satisfy the overall arrangement demand of cell-phone inner space, improve the utilization ratio of inner space as far as, on the other hand, embedded structure sets up the stability that makes rib and middle frame be connected better, and is more firm to make under the exogenic action, the rib can play better supporting effect to the breach position, avoids reducing the firm nature of complete machine because the problem of rib self stability.

In one possible design, the reinforcement further includes a protrusion and a groove, the protrusion and the groove being disposed on opposite sides of the body portion;

when the reinforcing part is matched with the opening, the protrusion is abutted to the inner side wall of the opening.

The contact area of the body part in the matching process with the middle frame is increased due to the convex arrangement, so that when the reinforcing part is embedded into the middle frame, the connection stability is better, the regular structure is prevented from shaking easily in the matched middle frame, and the regular structure is easy to fall off.

In one possible design, the number of the protrusions is two, and the protrusions are respectively arranged at two ends of the length direction of the reinforcing part.

By adopting the dispersed and relatively balanced layout, the structural stability of the reinforcing part is further improved, so that the better external force resistance effect of the reinforcing part is ensured.

In one possible design, the reinforcing part and the frame are made of the same material.

Through this kind of setting, can guarantee the better performance of antenna, improve antenna signal's intensity, the rib sets up in the same material in the frame, can make both simultaneous processing, integrated into one piece to practice thrift the processing step.

In one possible design, the intermediate frame comprises a projection, which projects at least partially into the recess;

the protruding part is connected with the frame through nanometer injection molding. The middle frame is made of plastic special for nano injection molding, and is specially used for connecting a plastic material of a metal frame of the mobile phone, so that the shielding effect of metal on mobile phone signals can be avoided.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic partial structural diagram of a middle frame assembly of an electronic device according to an embodiment of the present disclosure;

fig. 2 is a schematic partial structure view of the middle frame assembly provided in the embodiment of the present application, in which the direction indicated by an arrow is the length direction of the reinforcing portion and is also the length direction of the mobile phone;

FIG. 3 is a partial enlarged view of portion A of FIG. 2, wherein the direction indicated by the arrow is the thickness direction of the frame;

FIG. 4 is a schematic diagram of a simple structure of a middle frame assembly provided in an embodiment of the present application;

FIG. 5 is a partial schematic structural view of a middle frame assembly provided with no reinforcement part matching according to an embodiment of the present disclosure;

FIG. 6 is an enlarged view of portion B of FIG. 5;

fig. 7 is a schematic diagram of a simple structure of the matching between the frame and the middle frame according to the embodiment of the present application;

FIG. 8 is a simple diagram of an intermediate frame according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a simple structure of the combination of the rim, the middle frame and the reinforcement provided in the embodiment of the present application;

FIG. 10 is a schematic structural view of a reinforcement portion provided in an embodiment of the present application;

FIG. 11 is a top view of the center frame assembly without the center frame according to an embodiment of the present disclosure;

fig. 12 is a partial enlarged view of C in fig. 11, in which the direction indicated by the arrow is the longitudinal direction of the reinforcing portion.

Reference numerals:

1-middle frame; 11-a frame; a 111-notch; 111 a-first notch face; 111 b-second notch face; 112-strip structure; 12-a reinforcement; 121-a body portion; 122-a protrusion; 123-groove; 124-a first end; 125-a second end; 13-middle frame; 131-a boss; 132-opening a hole; 14-the middle part.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

An embodiment of the present application provides an electronic device, as shown in fig. 1, the electronic device has a middle frame assembly, and the middle frame assembly is used for mounting components such as a main board and a camera to combine to form a corresponding electronic device, and is not limited in this respect. Taking a mobile phone as an example, the middle frame assembly includes a middle frame 1, the middle frame 1 includes a middle portion 14, the middle portion 14 includes a metal part, the middle portion 14 is used for mounting electronic components, and for the mobile phone used, as the development of the whole screen of the mobile phone, the demand of the camera increases and more antennas need to be arranged for 5G communication, the mobile phone needs to be designed to be light and thin while various demands increase. Arrange the antenna in cell-phone top and bottom, it occupies to be more cameras, the space that can be used to arrange the antenna is more and more littleer, in order to guarantee that the antenna can be more arrange in it, among the prior art, arrange the antenna on the antenna boom, the antenna boom is connected in intermediate part 14, namely on fashioned plastics antenna boom, utilize laser technology directly to change the plating on the antenna boom and form metal antenna, and this kind of mode needs the plastic space of great area, make the shared volume of antenna boom great, when installing in the cell-phone, cause the conflict on the mainboard space easily, make the thickness of cell-phone increase, be unfavorable for present frivolous design theory.

In order to solve the above problems, in order to make a mobile phone light and thin and meet the arrangement requirements of more antennas, a design of excessively framing an antenna is also adopted in the prior art, the middle frame 1 further includes a frame 11 of a frame structure disposed at the outermost side of the middle portion 14, the frame 1 includes a metal part, the frame 11 can be used as an antenna, and the middle portion 14 is partially a metal part, so as to avoid that the performance of the frame 11 as an antenna is affected by the contact between the frame 11 and the metal part in the middle portion 14 when the frame 11 is matched with the middle portion 14, the middle frame 13 is integrally formed at the outer side of the middle portion 14, the middle frame 13 is an insulating part, as an embodiment, the middle frame 13 may be a plastic part, and the middle frame 13 is disposed between the middle portion 14 and the frame 11. In addition, the frame 11 capable of being used as an antenna is a frame-shaped structure connected in a closed loop, and because signals need to be converted from guided electromagnetic waves to space electromagnetic waves, energy radiation is realized, and the complete frame 11 has a shielding effect on the signals. Therefore, the frame 11 is provided with at least 1 notch 111, and through the arrangement of the notch 111, on one hand, signals can be converted from guided electromagnetic waves to spatial electromagnetic waves through the notch 111, so that energy radiation is realized; on the other hand, when the cut 111 is provided to break the closed-loop frame 11 so that it can be used as an antenna, the antenna is not short-circuited by the conductive closed-loop structure formed, and the frame 11 can be used as an antenna.

In the case that the number of antennas required is increased due to the arrival of 5G, in order to enable the frame 11 to meet the requirement of arranging a larger number of antennas, a plurality of notches 111 may be provided, as shown in fig. 4 and 7, and as the number of the notches 111 is increased, the frame 11 is divided into a plurality of strip-shaped structures 112 by the notches 111 to be used as antennas.

Alternatively, in order to meet the requirement of more antenna arrangements, in the case that the frame 11 is divided into a plurality of strip-shaped structures 112 by the provision of the plurality of notches 111 to be used as antennas, a corresponding antenna may be arranged in the middle frame 13, where the antenna is a metal part and is arranged in the middle frame 13 without contacting with other metal materials (such as the metal part of the frame 11 and the metal part of the middle part 14). Moreover, the antennas disposed in the middle frame 13 are disposed at positions close to the notches 111, respectively, so that when energy radiation is realized by the corresponding antennas, conversion of signals generated by the antennas to space battery waves through guided electromagnetic waves is better realized without being blocked by the metal frame 11.

In order to ensure that the frame 11 and the middle frame 13 are connected with good stability and structural strength under the condition that the frame 11 is provided with at least one notch 111, as shown in fig. 7 and 8, the middle frame 13 is provided with an outer side wall which is provided with a convex part 131, and the convex part 131 at least partially extends into the notch 111 to connect the frame 11 and the middle frame 13.

Optionally, for the connection between the frame 11 and the protruding portion 131 at the position of the notch 111, in order to improve the structural strength after the connection, the protruding portion 131 is connected with the frame 11 through nano injection molding, that is, the middle frame 13 is made of plastic specially used for nano injection molding and specially used for connecting the metal frame 11 of the mobile phone. Like this, after the frame 11 at bellying 131 with breach 111 both ends is connected, form closed frame construction with the combination of a plurality of breachs 111, when having improved the stability of frame 11 structure, because bellying 131 is the plastic material, frame 11 can not form closed loop's conductive structure to can not influence the use of frame 11 as the antenna.

In addition, when the notches 111 are formed in the frame 11 to be used as an antenna, the integrity of the frame 11 is damaged as the number of the notches 111 increases, and even if a structural matching mode that the protrusions 131 are connected with the frame 11 is adopted, the rigidity of the whole structure is reduced due to the arrangement of more notches 111, the flatness of the whole middle frame 1 is affected, and the airtightness of the whole machine is affected due to the reduction of the flatness. When the frame 11 is subjected to an external impact force or an extrusion force, the connection position between the frame 11 and the protruding portion 131 is prone to form a situation of metal and plastic dislocation under the action of the external force, that is, the position of the notch 111 where the protruding portion 131 is connected relatively may be dislocated, or the joint between the two may crack, thereby causing reliability problems such as complete machine cracking and poor air tightness.

Therefore, in order to avoid the problem of the reliability of the middle frame 1 being reduced when the antenna is edged on the frame 11, as shown in fig. 2, 3, 4 and 9, the middle frame 1 further includes a reinforcing part 12, the reinforcing part 12 is disposed on the middle frame 13, the reinforcing part 12 includes a metal member, the metal member of the reinforcing part 12 does not contact with the metal member of the frame 11, the metal member of the reinforcing part 12 does not contact with the metal member of the middle part 14, the reinforcing part 12 is disposed corresponding to the at least one notch 111 along the thickness direction (as indicated by the arrow in fig. 3) of the frame 11, and the projection of the reinforcing part 12 on the plane of the frame 11 at least covers the notch 11. As shown in fig. 4, 11 and 12, when the frame 11 is subjected to an external force, the acting forces F1 and F2 acting on one side or both sides of the notch 111 are applied, under which the joint between the metal and the plastic at the position of the notch 111 and the metal connected to the protrusion 131 is prone to crack or be misaligned, and through the reinforcement 12 disposed on the middle frame 13, when the frame 11 is subjected to the external force, the metal property of the reinforcement 12 provides a reverse acting force F3, which helps to avoid deformation of the middle frame 13, so as to overcome the external force, avoid misalignment or cracking at the position of the notch 111 when the external force is applied, and improve the overall rigidity.

Optionally, for the arrangement of the reinforcing portion 12, the reinforcing portion 12 may be correspondingly arranged at each position of the notch 111 to ensure the strength of the whole machine. The notch 111 can be arranged at the position of part of the notch 111, because the width of the mobile phone is shorter relative to the length of the mobile phone, when the corresponding notch 111 is arranged at the position of the frame 11 in the width direction of the mobile phone to meet the layout requirement of the antenna, because the frame 11 in the width direction of the mobile phone is shorter, the influence of the arranged notch 111 on the rigidity of the whole is relatively smaller, and when the corresponding notch 111 is arranged at the position of the frame 11 in the length direction of the mobile phone to meet the layout requirement of the antenna, the influence of the arranged notch 111 on the rigidity of the whole is relatively larger. Therefore, the reinforcing parts 12 can be arranged at the notches 111 which have a large influence on the overall rigidity according to the actual positions and the number of the notches 111, so that the overall rigidity is improved, and the number of the reinforcing parts 12 is small, so that the weight of the mobile phone can be reduced, and the requirements of better lightening and thinning of the mobile phone are met.

In one embodiment of the present application, in order to ensure that the reinforcing portion 12 can achieve the effect of improving the rigidity when disposed in the middle frame 13 at the position corresponding to the notch 111, as shown in fig. 3 and 4, the projection of the reinforcing portion 12 on the plane of the frame 11 at least covers the notch 11, i.e., along the thickness direction of the frame 11 (as indicated by the arrow in fig. 3, i.e., perpendicular to the longitudinal direction of the reinforcing portion 12), and the projection of the reinforcing portion 12 at least covers the notch 111. Through the form of the structural matching, when the frame 11 is subjected to the force of F1 and/or F2 (as shown in fig. 12), the force of F1 and F2 acts on the frame 11, in order to avoid cracking of the joint where the notch 111 is connected with the boss 131, the reverse acting force F3 generated by the reinforcing part 12 can play a good role in blocking, the projection of the reinforcing part 12 at least covers the joint where the notch 111 is connected to support the position which is easy to crack, and thus the arrangement of the reinforcing part 12 can play a good role in supporting and stabilizing.

Along the length direction of the reinforcement part 12 (as indicated by the arrows in fig. 2 and 10), the reinforcement part 12 has a first end 124 and a second end 125, and the notch 111 is disposed to make the frame 11 have a first notch surface 111a and a second notch surface 111b (as shown in fig. 12); the first end 124 and the second end 125 are located on both sides of the notch 111, and the distance from the first end 124 to the first notch surface 111a is the same as the distance from the second end 125 to the second notch surface 111 b. In order to ensure that the provided reinforcing part 12 can have a better supporting effect and improve the structural strength, on the basis of ensuring that the reinforcing part 12 can cover the notch 111, the length of the reinforcing part 12 is greater than the size of the notch 111 (as shown in fig. 4), so that the distance from the first end part 124 to the first notch surface 111a is the same as the distance from the second end part 125 to the second notch surface 111b, so as to ensure that when the external acting force is applied, the position where the notch 111 is matched with the boss 131 can receive the reverse acting force from the reinforcing part 12, and because the reinforcing part 12 is symmetrically arranged relative to the notch 111 along the length direction, when the position where the notch 111 is matched with the boss 131 is stressed to generate a tendency of cracking, the reinforcing part 12 symmetrically arranged relative to the notch 111 provides the reverse acting force to prevent the cracking force, and the stress at the connecting position where the first notch surface 111a and the second notch surface 111b are respectively connected with the boss 131 is uniform, therefore, the stress stability is improved, and the connection strength of the position of the notch 111 is ensured.

Optionally, for the arrangement of the reinforcing portion 12 relative to the notch 111, after the reinforcing portion 12 is assembled, the distance from the first end portion 124 to the first notch surface 111a and the distance from the second end portion 125 to the second notch surface 111b can be matched in a structure, so that the stability is good, and the better strength requirement of the whole machine can be ensured. It should be emphasized here that, for the reinforcing part 12 provided on the intermediate frame 13, so that the reinforcing part 12 can be arranged symmetrically with respect to the notch 111 in the length direction, depending on the actual assembly, although the complete symmetrical arrangement is more stable during assembly, such cooperation increases the difficulty of processing and increases the production cost. If not necessary, the reinforcing portion 12 may be symmetrical with respect to the notch 111 in the longitudinal direction as much as possible, and for example, an error of less than 1mm may be present, and is not particularly limited herein.

In order to ensure that the reinforcing portion 12 can provide a further enhanced strength, the first notch surface 111a and the second notch surface 111b are arranged in parallel, and the first notch surface 111a is perpendicular to the longitudinal direction of the reinforcing portion 12. Through the setting of the length direction mutually perpendicular of the breach face that sets up and reinforcing part 12 to guarantee the stability of interaction force, improve the intensity effect of reinforcing part 12.

As an embodiment of the present application, as shown in fig. 10, the reinforcing portion 12 includes a main portion 121, the main portion 121 has a long-strip structure, the main portion 121 is provided in the intermediate frame 13, and when a metal antenna is provided in the intermediate frame 13, the main portion 121 does not contact the antenna in the intermediate frame 13, and the antenna in the intermediate frame 13 does not contact the metal of the bezel 11 and the metal of the intermediate portion 14. For the reinforcing part 12 to be provided, since the reinforcing part 12 and the frame 11 both include metal pieces (which may be the same metal, such as aluminum), in order to be able to play a role in increasing the strength of the middle frame 1, the reinforcing part 12 needs to be connected with the middle frame 13 to increase the structural strength of the middle frame 13 through the main body 121 of the metal, so as to play a role in supporting the position where the notch 111 is matched with the protrusion 131.

The main body 121 is connected to the middle frame 13 and disposed at the position of the notch 111, so that the strength of the main body 121 itself provides a supporting force for the matching position of the notch 111 and the protrusion 131. In order to ensure that the main body 121 can have a better reinforcing effect, when the frame 11 is subjected to an external acting force and the main body 121 provides a supporting acting force in the opposite direction, the main body 121 is prevented from deviating relative to the middle frame 13 due to the insecure connection between the main body 121 and the middle frame 13, thereby reducing the using effect of the main body 121. Therefore, in order to ensure a good stability effect after the connection with the intermediate frame 13 through the reinforcing portion 12, as shown in fig. 5, 6 and 9, the reinforcing portion 12 is at least partially embedded in the intermediate frame 13 to improve the reliability of the engagement between the reinforcing portion 12 and the intermediate frame 13.

Alternatively, as shown in fig. 7, 8 and 9, the intermediate frame 13 is provided with an opening 132 in the thickness direction of the side frame 11, and the reinforcing portion 12 is fitted into the opening 132. This kind of embedded complex structure through trompil 132, on the one hand, can satisfy the overall arrangement demand of cell-phone inner space, improve the utilization ratio of inner space as far as, on the other hand, embedded structure sets up and makes rib 12 and middle frame 13 complex stability better, and is more firm, so that under the exogenic action, rib 12 can play better supporting effect to breach 111 position, avoid reducing the firm nature of complete machine because rib 12 sets up because the problem of complex stability when middle frame 13.

It should be emphasized here that, for the matching of the reinforcement part 12 and the middle frame 13, the above-mentioned direct-embedded installation matching may be adopted, or for the convenience of processing, the material of the reinforcement part 12 is the same as that of the frame 11, during processing, the frame 11 and the reinforcement part 12, which are both metal parts, are integrally formed, and are connected through a connection block, the middle frame 13, in which the antenna is arranged, is connected with the frame 11 through injection molding, the reinforcement part 12 is placed in the middle frame 13, and then the connection block connecting the frame 11 and the reinforcement part 12 is cut off through a cutter, so that the reinforcement part 12 is in a structure of being suspended in the middle frame 13.

For the arranged main body 121, in order to ensure that the frame 11 can ensure better antenna performance when used as an antenna, the minimum distance from the main body 121 to the frame 11 is 0.5mm-5 mm. When the notch 111 is formed in the frame 11, the frame 11 is divided into a plurality of independent notches 111 to be used as an antenna, and when the body 121 is connected to the frame 11, the body 121, which is a metal part, and the correspondingly connected frame 11 are combined to form a closed metal frame structure, so that a short circuit is formed, and the metal frame structure cannot be used as an antenna, the number of antennas is reduced, and the performance of the antenna is lost. In order to avoid short circuit of the antenna, at least the body portion 121 and the frame 11 need to have a predetermined distance therebetween.

In addition, when the frame 11 is used as an antenna, the metal notch 111 divided into a plurality of parts by the notch 111 can generate radiation when current is carried on the metal notch as a radiator, the opening degree around the radiator determines the magnitude of radiation efficiency, the reinforcing part 12 is used as a metal structural part, and the reinforcing part 12 is close to the antenna radiation branch, so that the current on the frame 11 is coupled to the reinforcing part 12, the reinforcing part 12 is used as a part of the radiator, the radiator is increased, and the antenna radiation efficiency is improved. In addition, from the viewpoint that the provided reinforcing portion 12 can improve the radiation efficiency of the antenna, the radiation efficiency is higher as the opening degree around the radiator is larger, and when the reinforcing portion 12 can be used as a part of the radiator, the distance between the reinforcing portion 12 and the frame 11 needs to be ensured on the basis that the current on the frame 11 can be coupled to the reinforcing portion 12, and the larger the distance between the reinforcing portion 12 and the frame 11 is, the larger the opening degree is, the higher the radiation efficiency is. In the structural cooperation of the connection among the side frame 11, the middle frame 13 and the middle portion 14, the preset distance from the arranged reinforcing portion 12 to the side frame 11 is limited, and generally, within the limited arrangement range, when the preset distance from the arranged reinforcing portion 12 to the side frame 11 is the largest, the current on the side frame 11 can be coupled to the reinforcing portion 12, and is not particularly limited herein. However, as the distance from the reinforcing part 12 to the frame 11 is larger, the supporting force of the reinforcing part 12 to the matching position of the notch 111 and the protrusion 131 is smaller, which affects the reliability of the structure, so as to comprehensively consider the distance from the reinforcing part 12 to the frame 11, in an embodiment, the distance between the reinforcing part 12 and the frame 11 is set to be greater than 1mm to 5mm, so that the reinforcing part 12 can play a better supporting effect while ensuring better antenna performance, and the reliability of the structure is ensured.

Optionally, when participating in antenna radiation, the reinforcing part 12 may affect the equivalent radiation aperture of the antenna, and further affect the radiation efficiency, so as to adjust the cross-sectional area and the length of the reinforcing part 12, the designer may adjust the cross-sectional area and the length according to the requirements in the actual situation, and no specific limitation is made here.

The present application also provides an embodiment, as shown in fig. 9 and 10, the reinforcing part 12 further includes a protrusion 122 and a groove 123, the protrusion 122 and the groove 123 being disposed on opposite sides of the body part 121; when the reinforcement 12 is fitted into the opening 132, the protrusion 122 abuts against the inner side wall of the opening 132. Wherein, the arrangement of the protrusion 122 increases the contact area when the main body 121 is matched with the middle frame 13 (i.e. when the main body 121 is matched with the inner wall of the opening 132, and the protrusion is arranged to match the opening 132, the opening 132 is arranged to have a corresponding concave structure and a protrusion matching, thereby increasing the contact area between the inner wall of the opening 132 and the main body 121), so that when the reinforcing part 12 is embedded into the middle frame 13, the connection stability is better, and it is avoided that the regular structure is easily shaken in the matched middle frame 13 and is easily dropped. The groove 123 is formed on the opposite side of the protrusion 122 for balancing the force of the protrusion 122, so that the overall stress of the reinforcing part 12 is relatively balanced, and thus, when the external acting force is responded, a relatively stable force can be generated to overcome, and the firmness of the whole machine is ensured.

In order to ensure the balance of the forces of the body portion 121, there are two protrusions 122, and the protrusions 122 are respectively disposed at both ends of the reinforcing portion 12 in the longitudinal direction. By adopting the dispersed and relatively balanced layout, the structural stability of the reinforcing part 12 is further improved, so that the better external force resistance effect of the reinforcing part 12 is ensured.

It should be emphasized that, for the structural design of the reinforcing part 12, simply considering the situation that the structural strength of the whole machine can be ensured and the good antenna performance can be ensured, it is preferable to design the reinforcing part 12 in a regular shape, such as a strip shape. On this basis, in order to enable the reinforcing portion 12 to have better connection stability when being connected to the intermediate frame 13, and avoid shaking or falling off, a corresponding matching structure is added on the basis of a regular shape to ensure stability, for example, the matching structure of the protrusion 122 and the groove 123 increases the contact area between the reinforcing portion 12 and the intermediate frame 13, improves the connection stability between the reinforcing portion 12 and the intermediate frame 13, and can also be realized through other matching structures, which is not specifically limited herein.

In order to draw a more obvious conclusion, the present application compares the three matching structures of the reinforcing part 12 not provided at the corresponding notch 111, the reinforcing part 12 provided in connection with the frame 11, and the application compares the three matching structures, that is, the notch 111 and the boss 131 connecting position without the reinforcing part 12 is 126N, the notch 111 and the boss connecting position with the reinforcing part 12 provided in connection with the frame 11 is 161N, and the notch 111 and the boss connecting position with the reinforcing part 12 provided in connection with the frame 11 is 160N. The following conclusions were made: from the structural strength, compared with the reinforcing part 12 without the reinforcing part 12, the structural strength of the reinforcing part 12 is improved by 28%, and the fracture cracking force of the connecting position of the notch 111 and the bulge 131 of the reinforcing part 12 connected with the frame 11 and the reinforcing part 12 not connected with the frame 11 is basically the same; from the perspective of the efficiency of the antenna, compared with the reinforcing part 12 connected to the frame 11, the reinforcing part 12 not connected to the frame 11 does not form a closed loop short circuit condition due to the fact that the frame 11 is not connected to the reinforcing part 12, so as to avoid the loss of the performance of the antenna, and the reinforcing part 12 provided in the former is an independent metal piece, which can be used as an antenna to participate in the radiation of the antenna, so that the radiator is increased, and the efficiency of the antenna can be improved by 2-3 dB. The arrangement of the reinforcing part 12 which is not connected with the frame 11 in the antenna structure can be used as an antenna while ensuring the structural strength, and the efficiency of the antenna is further improved.

Therefore, through the arrangement of the reinforcing part 12, under the condition that the notch 111 is arranged to meet the arrangement of more antennas and the performance requirements of the antennas, the reinforcing part 12 can support the position of the notch 111 in the frame 11, so that the position where the notch 111 is connected with the protruding part 131 is prevented from being dislocated or cracked under the action of external force, and the structural strength of the whole machine is improved. Meanwhile, by utilizing the metal performance of the arranged reinforcing part 12, the current on the frame 11 is coupled to the reinforcing part 12, so that the reinforcing part 12 is used as a part of the radiator, thereby increasing the radiator and further improving the radiation efficiency of the antenna.

It should be noted that a portion of this patent document contains material which is subject to copyright protection. The copyright owner reserves the copyright rights whatsoever, except for making copies of the patent files or recorded patent document contents of the patent office.

Claims

1. An electronic device comprising a middle frame (1), characterized in that the middle frame (1) comprises,

an intermediate portion (14), the intermediate portion (14) comprising a metal piece;

the middle frame (13), the middle frame (13) is an insulating part;

the frame (11), the frame (11) includes a metal piece, the middle frame (13) is arranged between the middle part (14) and the frame (11), and the frame (11) is provided with at least 1 notch (111);

reinforcing part (12), reinforcing part (12) set up in intermediate frame (13), reinforcing part (12) include the metalwork, the metalwork of reinforcing part (12) not with the metalwork contact of frame (11), the metalwork of reinforcing part (12) not with the metalwork contact of intermediate part (14), reinforcing part (12) are in the projection of frame (11) place plane covers at least breach (11).

2. The electronic device of claim 1, wherein the reinforcing portion (12) includes a first end portion (124) and a second end portion (125) along a length direction of the reinforcing portion (12), and the notch (111) is configured to provide the bezel (11) with a first notch surface (111a) and a second notch surface (111 b);

the first end (124) and the second end (125) are located on both sides of the notch (111), and the distance from the first end (124) to the first notch surface (111a) is the same as the distance from the second end (125) to the second notch surface (111 b).

3. The electronic apparatus according to claim 2, wherein the first notch face (111a) and the second notch face (111b) are arranged in parallel, and the first notch face (111a) is perpendicular to a longitudinal direction of the reinforcing portion (12).

4. The electronic device according to any of claims 1-3, wherein the reinforcement portion (12) comprises a body portion (121), the body portion (121) is an elongated structure, and a minimum distance from the body portion (121) to the bezel (11) is between 0.5mm and 5 mm.

5. The electronic device according to claim 4, characterized in that the distance of the body portion (121) to the bezel (11) is larger than 1 mm.

6. The electronic device according to any one of claims 1-3, wherein the middle frame (13) is provided with an opening (132) along a thickness direction of the rim (11), and the reinforcement portion (12) is embedded in the opening (132).

7. The electronic device according to claim 6, wherein the reinforcement portion (12) further comprises a protrusion (122) and a groove (123), the protrusion (122) and the groove (123) being arranged on opposite sides of the reinforcement portion (12);

when the reinforcing part (12) is matched with the opening (132), the protrusion (122) is abutted with the inner side wall of the opening (132).

8. The electronic device according to claim 7, wherein the number of the protrusions (122) is two, and the protrusions (122) are respectively disposed at both ends of the reinforcing portion (12) in the longitudinal direction.

9. The electronic device according to any of claims 1-3, wherein the reinforcement portion (12) is made of the same material as the bezel (11).

10. The electronic device according to any of claims 1-3, wherein the middle frame (13) comprises a protrusion (131), the protrusion (131) extending at least partially into the indentation (111);

the protruding part (131) is connected with the frame (11) through nano injection molding.