CN219371385U - Middle frame structure and electronic equipment - Google Patents

Abstract

The utility model discloses a middle frame structure and electronic equipment, and belongs to the technical field of electronics. The middle frame structure comprises: the first middle frame body comprises a first section, and the second middle frame body comprises a second section; the first section and the second section form a fracture at intervals; the width of at least part of the fracture decreases along the direction from the outer side to the inner side of the middle frame structure, and at least part of at least one of the first section and the second section is provided with a concave-convex structure. According to the middle frame structure, the width of the fracture is gradually reduced along the direction from the outer side to the inner side of the middle frame, the concave-convex structures are arranged on the sections of the two radiators at the fracture, the opposite area between the sections of the radiators and the local fracture width are changed to improve the parasitism between the two radiators, so that the mutual influence between the two radiators is reduced, and the working performance of the middle frame antenna is improved.

Description

Middle frame structure and electronic equipment

Technical Field

The present utility model relates to the field of electronic technologies, and in particular, to a middle frame structure and an electronic device.

Background

The metal middle frame is used as the radiator of the antenna, which is the main design scheme of the antenna in the related technology, and the CNC technology is adopted for processing and manufacturing the middle frame.

In order to meet the requirements of more and more frequency bands, a fracture needs to be added on the middle frame, but the appearance attractiveness of the whole machine is reduced due to the addition of the fracture; in order to reduce the number of the breaks, a plurality of antennas with different frequency bands can be manufactured on two sides of a group of breaks, but the parasitic effect of the breaks can affect the performance of the antennas on two sides, and particularly when the facing area of the breaks is larger, the effect of the parasitic effect on the performance of the antenna is more obvious.

Disclosure of Invention

The utility model provides a middle frame structure and electronic equipment, which can solve the problem that the parasitic effect of a fracture can influence the performance of an antenna.

The technical scheme is as follows:

in one aspect, a middle frame structure is provided, the middle frame structure comprising: the first middle frame body comprises a first section, and the second middle frame body comprises a second section;

the first section and the second section are opposite to each other at intervals to form a fracture;

the width of at least part of the fracture decreases along the direction from the outer side to the inner side of the middle frame structure, and at least part of at least one of the first section and the second section is provided with a concave-convex structure.

In some embodiments, the first and second middle frames each include a side frame portion and a burring portion, the burring portion being located on one of a front side or a back side of the side frame portion;

the width of the corresponding side frame part in the fracture decreases along the direction from the outer side to the inner side of the middle frame structure.

In some embodiments, the first section is provided with a first concave-convex structure, and the second section is provided with a second concave-convex structure.

In some embodiments, the first relief structure and the second relief structure are identical in structure, and the first relief structure and the second relief structure are symmetrical in position.

In some embodiments, the first and second concave-convex structures are identical in structure, and the positions of the first and second concave-convex structures are staggered with each other in the thickness direction of the middle frame structure.

In some embodiments, the first and second middle frames each include a side frame portion and a burring portion, the burring portion being located on one of a front side or a back side of the side frame portion;

the first middle frame body and the second middle frame body are respectively provided with a glue grabbing hole, each glue grabbing hole comprises a first hole part, and the first hole parts extend into the side frame parts and/or the flanging parts along the thickness direction of the middle frame structure.

In some embodiments, the cuff portion is located on a back side of the side frame portion and extends toward an inner side of the middle frame structure;

one end of the first hole part is communicated to the front side of the side frame part, and the other end of the first hole part extends into the flanging part.

In some embodiments, the inner side of the side frame part is provided with a step surface, and the first hole part is positioned on the step surface.

In some embodiments, the glue gripping hole further includes a second hole portion extending from an inner side surface of the first or second middle frame to communicate with the first hole portion.

In another aspect, an electronic device is provided, which includes the middle frame structure of any one of the present utility model.

The technical scheme provided by the utility model has the beneficial effects that at least:

according to the middle frame structure, the width of the fracture is gradually reduced along the direction from the outer side to the inner side of the middle frame, the concave-convex structures are arranged on the sections of the two radiators at the fracture, the width and the opposite area of the fracture between the sections of the two middle frames serving as the radiators are changed to improve the parasitic phenomenon between the two radiators, so that the mutual influence between the two radiators is reduced, and the working performance of the middle frame antenna is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural diagram of a middle frame structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of a first middle frame or a second middle frame for use in embodiments of the present disclosure;

fig. 3 is a schematic structural diagram of a concave-convex structure according to a first embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a concave-convex structure according to a second embodiment of the present utility model;

fig. 5 is a schematic structural view of a concave-convex structure according to a third embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a concave-convex structure according to a fourth embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a concave-convex structure according to a fifth embodiment of the present utility model;

fig. 8 is a structural cross-sectional view of the first middle frame or the second middle frame provided in the embodiment of the present utility model at the position of the glue grabbing hole;

fig. 9 is a position distribution diagram of a glue gripping hole according to an embodiment of the present utility model.

Reference numerals in the drawings are respectively expressed as:

1. a first middle frame; 11. a first section; 101. an inner side surface; 12. a side frame structure; 1201. a front side; 1202. a back side; 121. a step surface; 13. a burring part;

2. a second middle frame; 21. a second section;

3. breaking the seam;

4. a concave-convex structure; 401. a concave portion; 402. a male portion; 41. a first concave-convex structure; 42. a second concave-convex structure;

5. a glue grabbing hole; 51. a first hole portion; 52. a second hole portion;

a. the thickness direction of the middle frame structure.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of the utility model as detailed in the accompanying claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1 are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Unless defined otherwise, all technical terms used in the embodiments of the present utility model have the same meaning as commonly understood by one of ordinary skill in the art.

In the prior art, the shapes of two sides of the broken seam of the metal middle frame are opposite to each other so as to realize the functions of an antenna and a structure.

However, when the product shape is special, for example, the thickness dimension radiator of the middle frame is closer to the antenna size (more than 1/8 wavelength), the fracture of the radiator can generate two factors to deteriorate the antenna performance:

1. the antenna needs to break down the resonant mode at too low a frequency in this direction to avoid shunting of the current.

2. The antenna has too large facing area and obvious parasitic effect, which deteriorates the performance of the antenna. The parasitic capacitance can be approximated by the following formula:

C＝ε*S/(4πk*d)；

wherein epsilon is the dielectric constant of the material of the medium, S is the facing area of the gap, k is the Boltzmann constant, d is the gap width.

Therefore, when the facing area of the fracture is larger or the width of the fracture is smaller, the parasitic effect of the fracture is equivalent to capacitive loading on the antennas at two sides, so that the two antennas have serious mutual influence.

Therefore, the utility model provides the middle frame structure, which can improve the parasitic phenomenon between the two radiators at two sides of the fracture, reduce the mutual influence between the two radiators and improve the working performance of the middle frame antenna.

The technical scheme provided by the utility model is suitable for the electronic equipment adopting one or more of the following communication technologies: bluetooth (BT) communication technology, global positioning system (Global Positioning System, GPS) communication technology, wireless fidelity (Wireless Fidelity, wiFi) communication technology, global system for mobile communications (Global System Formobile Communications, GSM) communication technology, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) communication technology, long term evolution (Long Term Evolution, LTE) communication technology, 5G communication technology, and other communication technologies in the future.

The electronic equipment in the embodiment of the utility model can be a mobile phone, a tablet personal computer, a notebook computer, an intelligent bracelet, an intelligent watch, an intelligent helmet, intelligent glasses and the like. The electronic device may also be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, an electronic device in a 5G network or an electronic device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc., as the embodiments of the present utility model are not limited in this respect.

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

In one aspect, as shown in fig. 1-3, the present embodiment provides a middle frame structure, where the middle frame structure includes: a first middle frame 1 and a second middle frame 2, the first middle frame 1 comprising a first cross section 11 and the second middle frame 2 comprising a second cross section 21.

The first section 11 and the second section 21 are oppositely formed into a fracture 3 at intervals; the width of at least part of the break 3 decreases in the direction from the outside to the inside of the middle frame structure and at least part of at least one of the first and second sections 11, 21 is provided with a relief structure 4.

In the middle frame structure of this embodiment, the width of the fracture 3 decreases along the direction from the outer side to the inner side of the middle frame, the concave-convex structures 4 are arranged on the cross sections of the two radiators at the fracture 3, the opposite area between the cross sections of the two middle frames serving as the radiators is changed, and the parasitic phenomenon between the two radiators is improved by the partial fracture 3 width, so that the mutual influence between the two radiators is reduced, and the working performance of the middle frame antenna is improved.

In the middle frame structure of this embodiment, the concave-convex structures 4 are provided on the cross sections of the two radiators on both sides of the break 3, so that the facing area S of the gap and the gap width d can be changed.

Optionally, when the concave-convex structure 4 is a convex structure, the facing area S of the cross section is divided into a plurality of blocks, and the whole of the facing area S is cut down, so that parasitic capacitance is reduced.

Alternatively, when the concave-convex structure 4 is a concave structure, the slit width d is increased, thereby facilitating reduction of parasitic capacitance. Meanwhile, the facing area S with the closest section is reduced due to the concave structure, so that parasitic capacitance is reduced.

In this embodiment, the concave-convex structure 4 can further improve the adhesive grabbing capability of the first section 11 and/or the second section 21 on the plastic coating layer, so as to avoid the problem that the middle frame and the plastic coating layer fall off due to insufficient adhesive grabbing at the fracture 3.

In some possible implementations, the relief structure 4 is provided only on the first section 11; alternatively, the concave-convex structure 4 is provided only on the second section 21; alternatively, the first section 11 and the second section 21 are provided with the concave-convex structure 4, respectively.

As shown in fig. 1 to 3, each of the first middle frame body 1 and the second middle frame body 2 includes a side frame portion 12 and a burring portion 13, the burring portion 13 being located on one of a front side 1201 or a back side 1202 of the side frame portion 12; the width of the corresponding side frame portion 12 in the break 3 decreases in the direction from the outside to the inside of the middle frame structure.

Compared with the traditional middle frame structure, the middle frame structure of the embodiment arranges the flanging part 13 on the front side 1201 or the back side 1202 of the side frame part 12, thereby obtaining a new middle frame shape, enriching the appearance effect of the electronic equipment and improving the strength of the middle frame structure. In order to overcome the problem of the isolation of two adjacent antennas caused by the appearance of the flanging part 13, the side frame part 12 which does not affect the appearance is subjected to material reduction design, so that the width of the fracture 3 is gradually reduced from outside to inside, and the isolation of the two antennas is improved.

As shown in connection with fig. 4, in some embodiments, the relief structure 4 comprises at least two concave portions 401, the at least two concave portions 401 being spaced apart along the thickness direction a of the mid-frame structure.

By arranging at least two concave parts 401 at intervals in the thickness direction a of the middle frame structure, the parasitic effect of the fracture 3 is reduced, the electric length of the section along the thickness direction a of the middle frame structure can be broken, and the current shunt phenomenon along the thickness direction due to the fact that the thickness dimension of the middle frame structure is larger is reduced.

Alternatively, the number of concave portions 401 is, for example, two, three, four, or the like.

As shown in connection with fig. 5, in some embodiments, the relief structure 4 comprises at least two convex portions 402, the at least two convex portions 402 being spaced apart along the thickness direction a of the mid-frame structure.

By arranging at least two convex parts 402 at intervals in the thickness direction a of the middle frame structure, the parasitic effect of the fracture 3 is reduced, the electric length of the section along the thickness direction a of the middle frame structure can be broken, and the current shunt phenomenon along the thickness direction due to the fact that the thickness dimension of the middle frame structure is larger is reduced.

Alternatively, the number of male portions 402 may be, for example, two, three, four, etc.

As shown in connection with fig. 6, in some embodiments, the relief structure 4 comprises at least one concave portion 401 and at least one convex portion 402, the at least one convex portion 402 and the at least one concave portion 401 being spaced apart along the thickness direction a of the mid-frame structure.

The present embodiment can reduce the parasitic effect of the break 3 by using the combination of the concave portion 401 and the convex portion 402, and reduce the current split phenomenon in the thickness direction due to the larger thickness dimension of the middle frame structure.

In some possible implementations, the shape of the female portion 401 and the male portion 402 includes, but is not limited to, rectangular, circular, oval, triangular, trapezoidal, and the like.

As shown in connection with fig. 4, 5 and 7, in some embodiments, the first section 11 is provided with a first relief structure 41 and the second section 21 is provided with a second relief structure 42. By using the first concave-convex structure 41 of the first end surface and the second concave-convex structure 42 of the second end surface, the parasitic phenomenon between the two radiators can be improved, the mutual influence between the two radiators can be reduced, and the working performance of the middle frame antenna can be improved.

As shown in connection with fig. 4 and 5, in some embodiments, the first and second concave-convex structures 41 and 42 are identical in structure, and the positions of the first and second concave-convex structures 41 and 42 are symmetrical.

In some embodiments, the first concave-convex structure 41 and the second concave-convex structure 42 have the same structure, and the positions of the first concave-convex structure 41 and the second concave-convex structure 42 are staggered with each other along the thickness direction a of the middle frame structure, so that the first concave-convex structure 41 and the second concave-convex structure 42 can be complemented to a certain extent, and further, the structural strength of the middle frame structure at the fracture 3 is improved.

In some embodiments, the structures of the first and second concave-convex structures 41 and 42 are different, for example, the kinds and/or the number and/or the positions of the first and second concave-convex structures 41 and 42 are different.

As shown in connection with fig. 1, 2, 8, 9, in some embodiments, the first and second middle frames 1, 2 each include a side frame portion 12 and a burring portion 13, the burring portion 13 being located on one of a front side 1201 or a back side 1202 of the side frame portion 12; the first middle frame body 1 and the second middle frame body 2 are respectively provided with a glue grabbing hole 5, the glue grabbing holes 5 comprise first hole parts 51, and the first hole parts 51 extend into the side frame parts 12 and/or the flanging parts 13 along the thickness direction (the direction indicated by arrow a) of the middle frame structure. Fig. 8 is a cross-sectional view of the first middle frame 1 or the second middle frame 2 at the position of the glue gripping hole 5.

In the middle frame structure with the flanging part 13 of the embodiment, the plastic material can be firmly coated on the surfaces of the first middle frame body 1 and the second middle frame body 2 by utilizing the first hole part 51 in the plastic coating process.

Illustratively, the first hole portion 51 extends into the side frame portion 12 in the thickness direction, or the first hole portion 51 extends into the burring portion 13 in the thickness direction, or the first hole portion 51 extends into the side frame portion 12 and the burring portion 13 in the thickness direction. Another example is the number of glue gripping holes 5 on the first middle frame 1 or the second middle frame 2, for example one, two, three, etc.

As shown in connection with fig. 2, in some embodiments, the cuff portion 13 is located on the back side 1202 of the side frame portion 12 and extends toward the inside of the middle frame structure; one end of the first hole portion 51 communicates to the front side 1201 of the side frame portion 12, and the other end of the first hole portion 51 extends into the burring 13.

In this embodiment, the flanging portion 13 is located on the back side 1202 of the side frame 12, so that the front side 1201 of the side frame 12 can be used for arranging a full screen, or a smaller frame is reserved, so that the electronic device has a larger screen occupation ratio, the flanging portion 13 can bring a back frame with a metal appearance effect to the electronic device, the appearance quality of the electronic device is improved, and the protection effect of the internal electronic device is improved. The first hole part 51 of the glue grabbing hole 5 extends into the side frame part 12 and does not extend to the outer side surface of the flanging part 13, so that the glue grabbing hole 5 is hidden inside the flanging part 13, the appearance surface of the flanging part 13 is not damaged, and good appearance effect is ensured.

As shown in connection with fig. 2, in some embodiments, the inner side of the side frame 12 is provided with a step surface 121, and the first hole 51 is located on the step surface 121. In this embodiment, the first hole portion 51 is disposed on the step surface 121 inside the side frame portion 12, which is favorable to reduce the processing difficulty of the first hole portion 51, ensure the injection molding effect of the first hole portion 51, and enable the plastic-covered portion to be reliably connected with the middle frame body.

As shown in connection with fig. 8, in some embodiments, the glue gripping hole 5 further includes a second hole portion 52, and the second hole portion 52 extends from the inner side surface of the first middle frame body 1 or the second middle frame body 2 to communicate with the first hole portion 51.

Compared with the scheme that the glue grabbing holes 5 are vertically penetrated along the thickness direction a of the middle frame structure in the prior art, the glue grabbing holes 5 of the embodiment can ensure that the appearance surface of the back side of the middle frame structure is complete, improve the appearance effect of the back side of the middle frame structure, and have good use value.

On the other hand, the embodiment provides an electronic device, which comprises the middle frame structure of any one of the utility model.

The electronic equipment of the embodiment adopts the middle frame structure of the utility model, and has all the beneficial technical effects of all the embodiments.

In the description of the present specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model.

The foregoing description of the embodiments of the utility model is not intended to limit the utility model, but rather, the utility model is to be construed as limited to the embodiments disclosed.

Claims (10)

1. A mid-frame structure, characterized in that the mid-frame structure comprises: a first middle frame (1) and a second middle frame (2), wherein the first middle frame (1) comprises a first section (11), and the second middle frame (2) comprises a second section (21);

the first section (11) and the second section (21) form a fracture (3) at intervals;

the width of at least part of the fracture (3) decreases along the direction from the outer side to the inner side of the middle frame structure, and at least part of at least one of the first section (11) and the second section (21) is provided with a concave-convex structure (4).

2. The middle frame structure according to claim 1, wherein the first middle frame body (1) and the second middle frame body (2) each include a side frame portion (12) and a burring portion (13), the burring portion (13) being located on one of a front side (1201) or a back side (1202) of the side frame portion (12);

the width of the corresponding side frame part (12) in the fracture (3) is gradually reduced along the direction from the outer side to the inner side of the middle frame structure.

3. The middle frame structure according to claim 1, wherein the first section (11) is provided with a first concave-convex structure (41), and the second section (21) is provided with a second concave-convex structure (42).

4. A mid-frame structure according to claim 3, characterized in that the first relief structure (41) and the second relief structure (42) are identical in structure and the first relief structure (41) and the second relief structure (42) are symmetrical in position.

5. A mid-frame structure according to claim 3, characterized in that the first concave-convex structure (41) and the second concave-convex structure (42) are identical in structure, and the positions of the first concave-convex structure (41) and the second concave-convex structure (42) are staggered with each other in the thickness direction of the mid-frame structure.

6. The middle frame structure according to any one of claims 1 to 5, wherein the first and second middle frames (1, 2) each include a side frame portion (12) and a burring portion (13), the burring portion (13) being located at one of a front side (1201) or a back side (1202) of the side frame portion (12);

the first middle frame body (1) and the second middle frame body (2) are respectively provided with a glue grabbing hole (5), the glue grabbing holes (5) comprise first hole parts (51), and the first hole parts (51) extend into the side frame parts (12) and/or the flanging parts (13) along the thickness direction of the middle frame structure.

7. The middle frame structure according to claim 6, wherein the burring (13) is located on a back side (1202) of the side frame part (12) and extends toward an inner side of the middle frame structure;

one end of the first hole part (51) is communicated with the front side (1201) of the side frame part (12), and the other end of the first hole part (51) extends into the flanging part (13).

8. The middle frame structure according to claim 6, wherein a step surface (121) is provided on the inner side of the side frame portion (12), and the first hole portion (51) is located on the step surface (121).

9. The middle frame structure according to claim 6, wherein the glue gripping hole (5) further comprises a second hole portion (52), and the second hole portion (52) is communicated to the first hole portion (51) by extending from the inner side surface of the first middle frame body (1) or the second middle frame body (2).

10. An electronic device, characterized in that it comprises the medium frame structure according to any one of claims 1 to 9.