terminal device

Abstract

The application provides a terminal device, which comprises a middle frame antenna and a conductive spring plate. The conductive spring plate is installed on the inner side of the middle frame antenna. The conductive spring plate comprises a feeding portion, a fixing portion and a grounding portion. The fixing portion is fixedly connected with the middle frame antenna. The feeding portion and the grounding portion are both fixedly connected with the fixing portion. The feeding portion is used for feeding the middle frame antenna. The grounding portion is used for grounding the middle frame antenna. The terminal device provided by the application can feed and ground the middle frame antenna in a small space of the terminal device, and has a wider application prospect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic equipment, in particular to a terminal device, a case and an electronic equipment. BACKGROUND

[0002] An antenna is usually arranged in a terminal device, and the antenna needs to be fed and grounded to ensure normal communication of the terminal device. At present, in the terminal device, electronic devices such as a mainboard occupy a large space in the terminal device, and how to realize feeding and grounding of the antenna in a smaller space becomes a problem to be solved. SUMMARY

[0003] The purpose of the embodiments of the present application is to provide a terminal device which can realize feeding and grounding of an antenna in a smaller space of the terminal device, and has a wider application prospect.

[0004] The embodiments of the present application provide a terminal device, which comprises a middle frame antenna and a conductive reed, the conductive reed is installed on the inner side of the middle frame antenna, the conductive reed comprises a feeding part, a fixing part and a grounding part, the fixing part is fixedly connected with the middle frame antenna, the feeding part and the grounding part are both fixedly connected with the fixing part, the feeding part is used for feeding the middle frame antenna, and the grounding part is used for grounding the middle frame antenna.

[0005] The scheme of welding the feeding conductive reed for feeding and the grounding conductive reed for grounding with the middle frame antenna to realize electrical connection respectively needs spot welding space when the feeding conductive reed and the grounding conductive reed are welded with the middle frame antenna, and therefore a large space in the terminal device needs to be occupied. In the terminal device provided by the embodiments of the present application, the feeding part and the grounding part are arranged on the conductive reed at the same time to connect the feeding part and the grounding part on one conductive reed, so that the spot welding area required by the feeding conductive reed for feeding and the spot welding area required by the grounding conductive reed for grounding are combined, the space required for spot welding of the conductive reed is reduced, the occupied space of the conductive reed in the terminal device is reduced, and then feeding and grounding of the middle frame antenna in a smaller space of the terminal device can be realized, and the terminal device has a wider application prospect.

[0006] In addition, when the feeding conductive spring and the grounding conductive spring are respectively spot-welded with the middle frame antenna, local unevenness may occur, and the feeding conductive spring and the grounding conductive spring each need a certain space to ensure contact with the antenna spring, so a certain interval distance needs to be reserved between the feeding conductive spring and the grounding conductive spring. In the terminal device of the embodiment of the present application, since the feeding conductive spring and the grounding conductive spring are not needed to be used respectively, the interval distance that needs to be reserved between the feeding conductive spring and the grounding conductive spring is cancelled, the occupied space is further reduced, and the problem that the length of the feeding conductive spring and the length of the grounding conductive spring and the interval distance between the feeding conductive spring and the grounding conductive spring are considered, and the length ratio of the scheme of using the feeding conductive spring and the grounding conductive spring respectively is longer than the length of the middle frame antenna to which the feeding conductive spring and the grounding conductive spring are electrically connected, and a larger space needs to be occupied, and it is difficult to use in a smaller space, is solved.

[0007] In addition, compared with the scheme of using a single feeding conductive spring or a single grounding conductive spring, the area of the conductive spring used in the terminal device provided by the embodiment of the present application is larger, which is beneficial to subsequent positioning and fixing of the conductive spring. In addition, the area of the fixing part in the conductive spring as the center spot-welding region is also large, which is beneficial to improving the welding strength of the fixing part and the middle frame antenna, thereby improving the connection strength of the conductive spring and the middle frame antenna.

[0008] In a possible implementation, the feeding part and the grounding part are connected to opposite sides of the fixing part.

[0009] In a possible implementation, the terminal device further includes a first circuit board, a first antenna spring and a second antenna spring, the first antenna spring is electrically connected between the first circuit board and the feeding part of the conductive spring, and the second antenna spring is electrically connected between the first circuit board and the grounding part of the conductive spring. By arranging the conductive spring between the middle frame antenna and the first antenna spring and the second antenna spring, the problem that the corresponding current of the middle frame antenna has a certain nonlinearity when the middle frame antenna works, and a frequency multiplication harmonic is generated, thereby interfering with the RSE (Radiated Spurious Emission) of other antennas, can be avoided.

[0010] In a possible implementation, the terminal device further includes a circuit board assembly, the first circuit board is electrically connected with the circuit board assembly, the first antenna spring and the second antenna spring are both mounted on the circuit board assembly and are arranged at intervals, the first antenna spring is electrically connected between the circuit board assembly and the feeding part of the conductive spring, and the second antenna spring is electrically connected between the circuit board assembly and the grounding part of the conductive spring.

[0011] In a possible implementation, the circuit board assembly includes a second circuit board and an electrical connecting member, the first antenna spring and the second antenna spring are both mounted on the second circuit board and electrically connected to the second circuit board, and the electrical connecting member is electrically connected between the second circuit board and the first circuit board. When the middle frame antenna is far away from the first circuit board, it is difficult to electrically connect the first circuit board and the middle frame antenna only by using the first antenna spring and the second antenna spring, and thus it is impossible to realize feeding the middle frame antenna by using the first circuit board. In the terminal device provided in the embodiments of the present application, the first antenna spring and the second antenna spring are fixed and electrically connected by using the second circuit board in the circuit board assembly, so as to realize electrical connection between the circuit board assembly and the middle frame antenna. Meanwhile, the second circuit board and the first circuit board are electrically connected by using the electrical connecting member in the circuit board assembly, and the electrical connecting member is characterized by flexible wiring, so as to realize electrical connection between the first circuit board which is far away from the middle frame antenna and the middle frame antenna by using the circuit board assembly, thereby solving the problem that it is difficult to feed the middle frame antenna by using the first circuit board when the middle frame antenna is far away from the first circuit board, and effectively utilizing the space in the terminal device. In addition, the first antenna spring and the second antenna spring are fixed by using the second circuit board, so as to improve the mounting stability of the first antenna spring and the second antenna spring, and avoid movement of the first antenna spring and the second antenna spring when the first antenna spring and the second antenna spring elastically contact the conductive spring.

[0012] In a possible implementation, the second circuit board includes a first part and a second part, the first part is oppositely and spacedly arranged relative to the conductive spring, the first antenna spring and the second antenna spring are both mounted on a surface of the first part facing the conductive spring, and the second part is fixedly connected to the first part, and the electrical connecting member is electrically connected between the second part and the first circuit board.

[0013] In a possible implementation, the first circuit board is oppositely and spacedly arranged relative to the second part, the terminal device further includes a loudspeaker module, the loudspeaker module is located between the first circuit board and the second part, the electrical connecting member is electrically connected to the second part and extends along an edge of the loudspeaker module to be electrically connected to the first circuit board.

[0014] In a possible implementation, the feeding part and the grounding part are both fixedly connected to the same side of the fixed part and are spacedly arranged relative to each other. Compared with the mode in which the feeding part and the grounding part of the conductive spring are located on opposite sides of the fixed part, since the feeding part and the grounding part of the conductive spring are located on the same side of the fixed part, the length of the conductive spring is shorter under the condition that the length of the fixed part is constant, so as to reduce the space occupation of the conductive spring in the length direction, thereby facilitating realization of feeding and grounding the middle frame antenna in a smaller space. Under the condition that the space occupation in the length direction of the conductive spring is constant, the extension length of the fixed part is increased, so as to increase the welding area of the conductive spring and the middle frame antenna, thereby improving the connection stability between the conductive spring and the middle frame antenna.

[0015] In a possible implementation, the feeding portion and the fixed portion are connected at an angle, and the grounding portion and the fixed portion are connected at an angle, so that the fixed portion, the feeding portion, and the grounding portion are not in the same plane, and the conductive reed is suitable for various installation scenarios.

[0016] In a possible implementation, an angle between a plane where the feeding portion is located and a plane where the fixed portion is located is θ1, θ1 is an obtuse angle, and an angle between a plane where the grounding portion is located and the plane where the fixed portion is located is θ2, θ2 is an obtuse angle.

[0017] In a possible implementation, θ1 = θ2.

[0018] In a possible implementation, the conductive reed further includes a connecting portion, the connecting portion is located on the same side of the fixed portion as the feeding portion and the grounding portion, is fixedly connected to the fixed portion, and is connected between the feeding portion and the grounding portion. By arranging the connecting portion between the feeding portion and the grounding portion and connecting the connecting portion to the fixed portion, on the one hand, the connection strength between the feeding portion, the grounding portion, and the fixed portion can be enhanced, and the feeding portion or the grounding portion can be prevented from being separated from the fixed portion, and on the other hand, the current flowing from the feeding portion can also flow into the fixed portion along the connecting portion and then flow into the middle frame antenna, so that the middle frame antenna is fed, and the added connecting portion can also serve as an antenna radiator, the performance of the antenna radiator can be further improved, and the antenna signal quality of the terminal device can be improved.

[0019] In a possible implementation, the terminal device further includes a first circuit board, a first antenna spring, and a second antenna spring, the first antenna spring and the second antenna spring are both mounted to the first circuit board and are arranged at intervals, the first antenna spring is electrically connected between the first circuit board and the feeding portion of the conductive reed, and the second antenna spring is electrically connected between the first circuit board and the grounding portion of the conductive reed.

[0020] In a possible implementation, the feeding portion and the first circuit board are located on the same side of the first antenna spring, and the grounding portion and the first circuit board are located on the same side of the second antenna spring, so that the connection is simple and occupies less space.

[0021] In a possible implementation, the terminal device includes a first housing, a second housing, and a hinge, the hinge is connected between the first housing and the second housing, and the first housing includes the middle frame antenna.

[0022] In a possible implementation, the terminal device includes a rear cover and a middle frame, the middle frame is arranged at a periphery of the rear cover and includes the middle frame antenna.

[0023] In a possible implementation, the feeding portion, the fixed portion, and the grounding portion are integrally formed. BRIEF DESCRIPTION OF DRAWINGS

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the terminal device provided in the first embodiment of this application;

[0026] Figure 2 for Figure 1 A partial structural diagram of the first housing in the terminal device shown;

[0027] Figure 3 for Figure 2 A schematic diagram of the partial structure shown from another perspective;

[0028] Figure 4 for Figure 2 A schematic diagram of the partial assembly structure of the conductive spring, circuit board assembly, first antenna spring, and second antenna spring in the shown part of the structure;

[0029] Figure 5 for Figure 2 A schematic diagram of the conductive spring in the shown part of the structure;

[0030] Figure 6 for Figure 2 A partial structural diagram of the structure shown;

[0031] Figure 7 for Figure 6 A magnified view of part A in the local structure shown;

[0032] Figure 8 This is a partial structural diagram of the terminal device in Comparative Example 1;

[0033] Figure 9 The diagram shows the return loss and radiation efficiency curves of the mid-frame antenna in the terminal device of the first embodiment and the mid-frame antenna in the terminal device of Comparative Example 1.

[0034] Figure 10 This is a partial structural schematic diagram of the terminal device provided in the second embodiment of this application;

[0035] Figure 11 for Figure 10 A schematic diagram of the conductive spring in the shown part of the structure;

[0036] Figure 12 for Figure 10 A schematic diagram of the structure after removing the insulating part in the shown portion. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the terminal device 1 provided in the first embodiment of this application.

[0039] This application provides a terminal device 1, which includes, but is not limited to, devices equipped with antenna components such as mobile phones, tablets, and wearable devices. Wearable devices may include smart bracelets, smartwatches, augmented reality (AR) glasses, virtual reality (VR) glasses, etc. In this embodiment, the terminal device 1 is a foldable mobile phone, that is, a mobile phone that can switch between a folded state and an unfolded state.

[0040] It should be understood that the terminal device 1 shown in the embodiments of this application is an electronic product capable of being folded once. In other embodiments, the terminal device 1 may also be an electronic product capable of being folded multiple times (two or more times). In this case, the terminal device 1 includes multiple parts, and two adjacent parts may be folded relatively close together until the terminal device 1 is in a folded state, and two adjacent parts may also be unfolded relatively far apart until the terminal device 1 is in an unfolded state.

[0041] Terminal device 1 includes housing assembly 1000 and multiple electronic components ( Figure 1 (not shown) and display screen ( Figure 1 (Not shown). The housing assembly 1000 is provided with a receiving cavity in which multiple electronic devices are housed. Exemplary examples include, but are not limited to, a motherboard, a speaker module, etc. A display screen is mounted on the housing assembly 1000.

[0042] In the embodiment, the accommodating cavity comprises a first chamber and a second chamber. The shell assembly 1000 comprises a first shell 100, a second shell 200 and a rotating shaft 300. The rotating shaft 300 is connected between the first shell 100 and the second shell 200 to realize the rotating connection between the first shell 100 and the second shell 200. Specifically, the first shell 100 and the second shell 200 each comprise a back cover 110 and a middle frame 120. The middle frame 120 of the first shell 100 is arranged at the periphery of the back cover 110 of the first shell 100 and forms the first chamber together with the back cover 110 of the first shell 100. The second shell 200 comprises a back cover 110 and a middle frame 120. The middle frame 120 is arranged at the periphery of the back cover 110 and forms the second chamber together with the back cover 110. The rotating shaft 300 is rotatably connected between the middle frame 120 of the first shell 100 and the middle frame 120 of the second shell 200 and is located at the side of the back cover 110 of the first shell 100 facing the middle frame 120 and at the side of the back cover 110 of the second shell 200 facing the middle frame 120. The back cover 110 of the first shell 100 can rotate around the rotating shaft 300 and relative to the back cover 110 of the second shell 200, and the middle frame 120 of the first shell 100 can rotate around the rotating shaft 300 and relative to the middle frame 120 of the second shell 200, so as to realize the folding of the first shell 100 around the rotating shaft 300 and relative to the second shell 200.

[0043] The display screen is mounted on the first shell 100 and the second shell 200 and can be folded around the rotating shaft 300. In the embodiment, the display screen is a flexible screen. The display screen comprises a first part, a bendable part and a second part. The first part is mounted on the middle frame 120 of the first shell 100 and is arranged away from the back cover 110 of the first shell 100. The bendable part is arranged opposite to the rotating shaft 300. The second part is mounted on the middle frame 120 of the second shell 200 and is arranged away from the back cover 110 of the second shell 200. In the embodiment, the first part, the bendable part and the second part are integrally formed. In other embodiments, the first part, the bendable part and the second part can also be separate parts, which are not limited in the application.

[0044] The first shell 100 and the second shell 200 can be relatively rotated through the rotating shaft 300, so that the terminal device 1 is switched between the unfolded state and the folded state. Specifically, the first shell 100 and the second shell 200 can be relatively rotated to be arranged opposite to each other, so that the terminal device 1 is in the unfolded state. At this time, the included angle between the back cover 110 of the first shell 100 and the back cover 110 of the second shell 200 is substantially 180 degrees. The included angle between the middle frame 120 of the first shell 100 and the middle frame 120 of the second shell 200 is substantially 180 degrees. The first part and the second part of the display screen are relatively unfolded, and the bendable part is unfolded without bending.

[0045] The first housing 100 and the second housing 200 can be rotated relative to each other to be positioned opposite each other, so that the terminal device 1 is in a folded state. At this time, the rear cover 110 of the first housing 100 is positioned opposite to the rear cover 110 of the second housing 200. The middle frame 120 of the first housing 100 is positioned opposite to the middle frame 120 of the second housing 200. The first part of the display screen is positioned opposite to the second part, and the bendable part is bent.

[0046] It should be noted that in some other embodiments, the terminal device 1 may not be a foldable phone; for example, the terminal device 1 may be a candybar phone. In this case, the terminal device 1 includes a back cover, a mid-frame, and a display screen. The mid-frame is located around the perimeter of the back cover and includes a mid-frame antenna. The display screen is mounted on the mid-frame and is positioned opposite to the back cover. The structure of the mid-frame, the implementation of power supply to the mid-frame antenna, and the design of the mid-frame antenna can be referred to the relevant designs of the mid-frame 120 and mid-frame antenna 430 described below, and will not be repeated hereafter.

[0047] See Figure 2 and Figure 3 , Figure 2 for Figure 1 A partial structural diagram of the first housing 100 in the terminal device 1 shown. Figure 3 for Figure 2 The diagram shows a partial structure from another perspective. Among them, Figure 2 The dashed box indicates the installation position of the 300 shaft.

[0048] In this embodiment, the structure of the middle frame 120 of the first housing 100 is similar to that of the middle frame 120 of the second housing 200. The following description will take the middle frame 120 of the first housing 100 as an example.

[0049] The middle frame 120 is provided with antenna slots 410 and acoustic cavity holes 420. The opening of the antenna slot 410 is located in the middle frame 120 and extends through the middle frame 120 along the thickness direction of the terminal device 1, thereby dividing the middle frame 120 to form multiple middle frame antennas 430. In this embodiment, the middle frame 120 is made of metal, such as aluminum alloy and magnesium alloy. The middle frame antennas 430 are used to ensure normal communication of the terminal device 1. There are multiple acoustic cavity holes 420, all located in the middle frame 120 and spaced apart from each other, and spaced apart from the antenna slots 410. For example, there are four acoustic cavity holes 420. In other embodiments, the number of acoustic cavity holes 420 may be one, two, five, etc., and this application embodiment does not specifically limit the number of acoustic cavity holes 420. In this embodiment, each acoustic cavity hole 420 extends through the middle frame 120 along the width direction of the terminal device 1 and communicates with the receiving cavity. In other embodiments, the acoustic cavity 420 may also extend through the middle frame 120 along the length of the terminal device 1.

[0050] The middle frame 120 further comprises an insulating portion 440. The insulating portion 440 is filled in the antenna slit 410 and fixedly connected between two adjacent middle frame antennas 430.

[0051] The following describes the design of feeding and grounding the middle frame antennas 430 in combination with specific structures.

[0052] The terminal device 1 further comprises a first circuit board 510, a battery 520, a speaker module 530, a conductive spring 600, a circuit board assembly 700, a first antenna spring 810 and a second antenna spring 820. The first circuit board 510, the battery 520, the speaker module 530, the conductive spring 600, the circuit board assembly 700, the first antenna spring 810 and the second antenna spring 820 are all installed in the first chamber in the accommodating cavity. In the embodiment, the first circuit board 510 can be the main board of the terminal device 1.

[0053] The first circuit board 510 is opposite to and spaced apart from the rotating shaft 300. The battery 520 is installed between the first circuit board 510 and the rotating shaft 300 and opposite to and spaced apart from the middle frame antennas 430. The first circuit board 510, the battery 520, the rotating shaft 300 and the middle frame antennas 430 enclose a receiving space. The speaker module 530 is installed in the receiving space and opposite to the sound cavity hole 420. The speaker module 530 can emit sound, and the sound can be diffused to the external environment through the sound cavity hole 420 to realize the sound emission of the terminal device 1. The conductive spring 600 is installed on the inner side of the middle frame antennas 430 and electrically connected to the middle frame antennas 430. The first antenna spring 810 and the second antenna spring 820 are both electrically connected between the conductive spring 600 and the circuit board assembly 700. The circuit board assembly 700 is electrically connected to the battery 520.

[0054] Because the installation of the first circuit board 510, the battery 520, the speaker module 530 and the rotating shaft 300 occupies a large space in the terminal device 1, the middle frame antennas 430 located on the side of the antenna slit 410 away from the first circuit board 510 need to realize the feeding and grounding effects in a small space. Therefore, the conductive spring 600 is installed on the middle frame antennas 430 in the embodiment, and the feeding part and the grounding part are concentrated on the conductive spring 600. The conductive spring 600 occupies a small space and can realize the feeding and grounding of the middle frame antennas 430 in a small space.

[0055] Referring to Figure 2 and Figure 4 , Figure 4 for Figure 2 part of the assembly structure of the conductive spring 600, the circuit board assembly 700, the first antenna spring 810 and the second antenna spring 820 in the partial structure.

[0056] The first circuit board 510 is provided with a signal feed-in point and a ground feed-in point for respectively feeding the middle frame antenna 430 with power and grounding the middle frame antenna 430 by using the first circuit board 510.

[0057] The circuit board assembly 700 comprises a second circuit board 710 and an electrical connecting member 720. The electrical connecting member 720 is electrically connected with the second circuit board 710. For example, the second circuit board 710 is a flexible printed circuit (FPC), and the electrical connecting member 720 is a cable.

[0058] Specifically, the second circuit board 710 comprises a first part 711 and a second part 712. The second part 712 is fixedly connected with the first part 711, and the included angle between the second part 712 and the first part 711 is greater than 0. In the embodiment, the first part 711 is substantially in the form of a flat plate. The second part 712 is fixedly connected with the first part 711 and extends along the thickness direction of the first part 711 away from the surface of the first part 711. In the embodiment, the plane where the second part 712 is located is substantially perpendicular to the plane where the first part 711 is located. The electrical connecting member 720 is electrically connected with the second part 712 to realize the electrical connection between the electrical connecting member 720 and the second circuit board 710.

[0059] The first antenna spring 810 is used to feed the middle frame antenna 430 with power, and the second antenna spring 820 is used to ground the middle frame antenna 430. In the embodiment, there is one first antenna spring 810 and one second antenna spring 820. For example, the first antenna spring 810 and the second antenna spring 820 are both common antenna springs, and the structure of the first antenna spring 810 and the second antenna spring 820 is not limited in the present application. Any structure that can realize elastic contact and electrical connection with the conductive spring 600 can be used.

[0060] Referring to Figure 5 and Figure 6 , Figure 5 Fig. 2 is a structural schematic diagram of the conductive spring 600 in the partial structure shown in Figure 2 Fig. 1, Figure 6 Fig. 2 is a partial structural schematic diagram of the partial structure shown in Figure 2 Fig. 1. In the figures, Figure 5 and Figure 6 the dashed lines only represent the area division of the parts of the conductive spring 600, and do not represent the actual structure, Figure 6 Fig. 2 is a partial structural schematic diagram of the partial structure shown in

[0061] The conductive spring 600 includes a feeding portion 610a, a grounding portion 620a and a fixing portion 630a, and the feeding portion 610a and the grounding portion 620a are fixedly connected with the fixing portion 630a. In the embodiment, the feeding portion 610a, the grounding portion 620a and the fixing portion 630a are integrally formed. The feeding portion 610a is used for feeding the middle frame antenna 430, and the grounding portion 620a is used for grounding the middle frame antenna 430.

[0062] Specifically, along the extension direction of the conductive spring 600, the feeding portion 610a and the grounding portion 620a are connected to opposite sides of the fixing portion 630a. In the embodiment, the feeding portion 610a and the grounding portion 620a are located in the same plane as the fixing portion 630a. For example, the conductive spring 600 is a long strip-shaped sheet. The fixing portion 630a can be fixedly connected to the surface of the middle frame antenna 430 facing the accommodating cavity by welding, so as to realize the fixed connection of the conductive spring 600 to the inner side of the middle frame antenna 430.

[0063] Continuing to refer to Figure 2 and Figure 4 , in the assembled terminal device 1, the fixing portion 630a in the conductive spring 600 is fixedly connected to the inner side of the middle frame antenna 430, so as to realize the electrical connection between the conductive spring 600 and the middle frame antenna 430. The first portion 711 in the second circuit board 710 is oppositely and spacedly arranged with the conductive spring 600, and the second portion 712 is located on the side of the loudspeaker module 530 away from the first circuit board 510, so as to realize that the loudspeaker module 530 is located between the first circuit board 510 and the second portion 712. The first antenna spring 810 and the second antenna spring 820 are both fixedly connected to the surface of the first portion 711 facing the conductive spring 600, and are both electrically connected with the first portion 711, so as to realize the electrical connection between the first antenna spring 810 and the second antenna spring 820 and the circuit board assembly 700. The first antenna spring 810 and the second antenna spring 820 are spacedly arranged with each other and are both electrically connected with the conductive spring 600. The first antenna spring 810 is in elastic contact with the feeding portion 610a of the conductive spring 600 and is electrically connected with the feeding portion 610a. The second antenna spring 820 is in elastic contact with the grounding portion 620a of the conductive spring 600 and is electrically connected with the grounding portion 620a. The electrical connector 720 is electrically connected with the second portion 712 and extends along the edge of the loudspeaker module 530 to be electrically connected with the first circuit board 510, so as to realize that the electrical connector 720 is electrically connected between the second portion 712 and the first circuit board 510, thereby realizing the electrical connection between the circuit board assembly 700 and the first circuit board 510.

[0064] Referring to Figure 7 , Figure 7 is a partial enlarged view of part A in the partial structure shown in Figure 6 . Figure 7The middle arrow direction only indicates the current flow direction of the schematic path.

[0065] The first circuit board 510 can introduce the current into the feeding part 610a of the conductive spring 600 in sequence through the signal feeding point, the electrical connector 720, the second part 712 of the second circuit board 710, the first part 711, and the first antenna spring 810 in elastic contact with the feeding part 610a of the conductive spring 600. The current flowing into the feeding part 610a flows into the fixed part 630a and then flows into the middle frame antenna 430 welded with the fixed part 630a through the fixed part 630a to realize the feeding of the middle frame antenna 430. At this time, in addition to the middle frame antenna 430 as the antenna radiator, the conductive spring 600 fixedly connected with the middle frame antenna 430 can be used as the antenna radiator, which is equivalent to thickening the antenna radiator and improving the antenna signal quality of the terminal device 1.

[0066] The current flowing into the fixed part 630a of the conductive spring 600 and the current flowing into the middle frame antenna 430 can both flow into the grounding part 620a and then be connected to the ground feeding point of the first circuit board 510 in sequence through the second antenna spring 820 in elastic contact with the grounding part 620a, the first part 711 of the second circuit board 710, the second part 712, and the electrical connector 720 to realize the grounding of the middle frame antenna 430.

[0067] The scheme of welding the feeding conductive spring and the grounding conductive spring to the middle frame antenna 430 to realize electrical connection respectively, and the feeding conductive spring and the grounding conductive spring need spot welding space when being welded to the middle frame antenna 430, so a large space in the terminal device 1 needs to be occupied. In the first aspect, the terminal device 1 provided by the embodiment of the present application is provided with the feeding part 610a and the grounding part 620a on the conductive spring 600 to connect the feeding part and the grounding part on one conductive spring 600, so that the spot welding area required by the feeding conductive spring and the spot welding area required by the grounding conductive spring are combined, the space required by the spot welding of the conductive spring 600 is reduced, and the occupied space of the conductive spring 600 in the terminal device 1 is reduced. At the same time, the length of the fixed part 630a of the conductive spring 600 is less than the sum of the length of the fixed part of the feeding conductive spring and the length of the fixed part of the grounding conductive spring, which means that the length of the fixed part 630a is reduced, and the length of the conductive spring 600 is reduced, so that the occupied space of the conductive spring 600 in the terminal device 1 is reduced. In addition, considering that the feeding conductive spring and the grounding conductive spring may be locally uneven when being spot welded to the middle frame antenna 430 respectively, and the feeding conductive spring and the grounding conductive spring need a certain space to ensure contact with the first antenna spring 810 and the second antenna spring 820 respectively, a certain interval distance needs to be reserved between the feeding conductive spring and the grounding conductive spring. The scheme of the embodiment of the present application does not need to use the feeding conductive spring and the grounding conductive spring respectively, so the interval distance between the feeding conductive spring and the grounding conductive spring needs to be reserved, which further reduces the occupied space, and solves the problem that the length of the feeding conductive spring and the grounding conductive spring and the interval distance between the feeding conductive spring and the grounding conductive spring are considered, and the length of the scheme of using the feeding conductive spring and the grounding conductive spring respectively is longer than the length of the middle frame antenna 430 to which it is electrically connected, which needs to occupy a larger space and is difficult to use in a smaller space.

[0068] In addition, compared with the scheme of using a single feeding conductive spring or a single grounding conductive spring, the area of the conductive spring 600 used in the terminal device 1 provided by the embodiment of the present application is larger, which is beneficial to subsequent location and fixation of the conductive spring 600. In addition, the area of the fixed part 630a in the conductive spring 600 as the central spot welding area is also large, which is beneficial to improving the welding strength of the fixed part 630a and the middle frame antenna 430, and thus is beneficial to improving the connection strength of the conductive spring 600 and the middle frame antenna 430. At the same time, since the spot welding area of the fixed part 630a is large, the heat dissipation effect is good when spot welding, and heat deformation of the insulating part 440 beside the middle frame antenna 430 can be well avoided.

[0069] In the second aspect, the terminal device 1 provided by the embodiments of the present application can avoid the problem of RSE (Radiated Spurious Emission) caused by the nonlinearity of the current of the middle frame antenna 430 when working, which can generate multiple frequency harmonics and interfere with other antennas.

[0070] In addition, when the middle frame antenna 430 is far away from the first circuit board 510, it is difficult to electrically connect the first circuit board 510 and the middle frame antenna 430 by only using the first antenna spring 810 and the second antenna spring 820, and thus it is impossible to realize the feeding of the middle frame antenna 430 by the first circuit board 510. In the terminal device 1 provided by the embodiments of the present application, the first antenna spring 810 and the second antenna spring 820 are fixed and electrically connected by the second circuit board 710 in the circuit board assembly 700, so as to realize the electrical connection between the circuit board assembly 700 and the middle frame antenna 430. Meanwhile, the second circuit board 710 and the first circuit board 510 are electrically connected by the electrical connector 720 in the circuit board assembly 700, and the flexible wiring of the electrical connector 720 is used to realize the electrical connection between the first circuit board 510 and the middle frame antenna 430 by the circuit board assembly 700, so as to solve the problem of the feeding of the middle frame antenna 430 by the first circuit board 510 caused by the long distance between the middle frame antenna 430 and the first circuit board 510, and effectively utilize the space in the terminal device 1. In addition, the first antenna spring 810 and the second antenna spring 820 are fixed by the second circuit board 710, which can improve the installation stability of the first antenna spring 810 and the second antenna spring 820, and avoid the movement of the first antenna spring 810 and the second antenna spring 820 when they are in elastic contact with the conductive spring 600.

[0071] Reference is made to Figure 8 and Figure 9 , Figure 8 FIG. 2 is a partial structure diagram of the terminal device of Comparative Example One, Figure 9 FIG. 4 is a curve diagram of the return loss and the radiation efficiency of the middle frame antenna 430 in the terminal device 1 of the first embodiment and the middle frame antenna 430 in the terminal device of Comparative Example One. In FIG. 4, Figure 9 The horizontal coordinate represents the frequency, and the unit is GHz. The vertical coordinate represents the return loss, and the unit is dB. In FIG. 4, Figure 9Curve 1 represents the radiation efficiency curve of the mid-frame antenna 430 of the terminal device 1 in the first embodiment, curve 2 represents the radiation efficiency curve of the mid-frame antenna 430 of the terminal device in Comparative Example 1, curve 3 represents the return loss curve of the mid-frame antenna 430 of the terminal device 1 in the first embodiment, and curve 4 represents the return loss curve of the mid-frame antenna 430 of the terminal device in Comparative Example 1.

[0072] Comparative Example 1 provides a terminal device. The difference between the terminal device of Comparative Example 1 and the terminal device 1 of the first embodiment is that the terminal device 1 of Comparative Example 1 uses a power supply conductive spring 601 and a grounding conductive spring 602 respectively.

[0073] Specifically, in the terminal device of Comparative Example 1, the feed conductive spring 601 and the ground conductive spring 602 are respectively welded to the mid-frame antenna 430. The first antenna spring 810 and the second antenna spring 820 are both fixedly connected to the second circuit board 710 in the circuit board assembly 700, and are electrically connected to the second circuit board 710, and are in elastic contact with the feed conductive spring 601 and the ground conductive spring 602 respectively.

[0074] Simulation experiments were conducted using the mid-frame antenna 430 in the terminal device 1 of the first embodiment and the mid-frame antenna 430 in the terminal device of Comparative Example 1. The return loss (S11) and radiation efficiency curves of the mid-frame antenna 430 are shown below. Figure 9 As shown. From Figure 9 As can be seen, the return loss S11 of the mid-frame antenna 430 in the first embodiment is smaller than that of the mid-frame antenna 430 in Comparative Example 1, indicating better antenna performance. The radiation efficiency of the mid-frame antenna 430 in the first embodiment and the mid-frame antenna 430 in Comparative Example 1 covers the same frequency band, namely the 3.4GHz-3.6GHz band (i.e., the N78 band) and the 5GHz-6GHz band (i.e., the 5G band).

[0075] Simulation results show that in the terminal device 1 provided in this application embodiment, the use of conductive spring 600 to simultaneously feed and ground the mid-frame antenna 430 not only enables it to be used in a small space, but also ensures that the return loss of the mid-frame antenna 430 is small, the antenna performance is good, the coverage frequency band is wide, and it has good application prospects.

[0076] See Figure 10 , Figure 10 This is a partial structural diagram of the terminal device 1 provided in the second embodiment of this application.

[0077] The difference between the terminal device 1 of the second embodiment and the terminal device 1 of the first embodiment is that the conductive spring 600 in the terminal device 1 of the second embodiment has a different structure and installation position than the conductive spring 600 in the terminal device 1 of the first embodiment.

[0078] Specifically, in the terminal device 1 of the second embodiment, the first circuit board 510 is arranged opposite and spaced apart from the middle frame antenna 430. The conductive spring 600 is located between the first circuit board 510 and the middle frame antenna 430, and is fixedly connected to the inner side of the middle frame antenna 430. The first antenna spring 810 and the second antenna spring 820 are both fixedly installed on the surface of the first circuit board 510 away from the back cover 110, and are arranged spaced apart from each other, and are respectively in elastic contact with the surface of the conductive spring 600 away from the back cover 110. The first antenna spring 810 and the second antenna spring 820 are both electrically connected between the first circuit board 510 and the conductive spring 600.

[0079] Referring to Figure 11 , Figure 11 for Figure 10 the structure of the conductive spring 600 in the partial structure shown. Among them, Figure 11 the dashed line in the figure only represents the area division of each part of the conductive spring 600, and does not represent the actual structure.

[0080] The conductive spring 600 includes a feeding portion 610b, a grounding portion 620b, a fixing portion 630b, and a connecting portion 640b. The feeding portion 610b, the grounding portion 620b, and the connecting portion 640b are all fixedly connected to the same side of the fixing portion 630b. The feeding portion 610b and the grounding portion 620b are arranged spaced apart from each other, and the connecting portion 640b is connected between the feeding portion 610b and the grounding portion 620b. In this embodiment, the feeding portion 610b, the grounding portion 620b, the fixing portion 630b, and the connecting portion 640b are integrally formed. Among them, the fixing portion 630b is used for fixedly connecting to the inner side of the middle frame antenna 430. Exemplarily, the fixing portion 630b can be fixedly connected to the middle frame antenna 430 by welding.

[0081] In this embodiment, the plane where the feeding portion 610b is located is connected at an angle with the plane where the fixing portion 630b is located, that is, the feeding portion 610b and the fixing portion 630b are not in the same plane. The plane where the grounding portion 620b is located is connected at an angle with the plane where the fixing portion 630b is located, that is, the grounding portion 620b and the fixing portion 630b are not in the same plane. The feeding portion 610b and the grounding portion 620b are located in the same plane. Exemplarily, the angle between the plane where the feeding portion 610b is located and the plane where the fixing portion 630b is located is θ1, θ1 is greater than 0, and the angle between the plane where the grounding portion 620b is located and the plane where the fixing portion 630b is located is θ2, θ2 is greater than 0. In this embodiment, θ1 = θ2, and both are obtuse angles.

[0082] Referring to Figure 12 , Figure 12 for Figure 10 the structure schematic diagram of the structure after removing the insulating portion 440 in the partial structure shown. Among them, Figure 12 the arrow direction in the figure only represents the schematic path of the current flow direction.

[0083] In the assembled terminal device 1, the fixed portion 630b in the conductive spring 600 is fixedly connected to the inner side of the middle frame antenna 430, so as to realize the fixed connection of the conductive spring 600 to the inner side of the middle frame antenna 430. The feeding portion 610b and the grounding portion 620b are substantially in the same plane as the first circuit board 510. The first antenna spring 810 elastically contacts the surface of the conductive spring 600 away from the back cover 110, and is electrically connected to the feeding portion 610b. The second antenna spring 820 elastically contacts the surface of the conductive spring 600 away from the back cover 110, and is electrically connected to the grounding portion 620b. Among them, the feeding portion 610b and the first circuit board 510 are located on the same side of the first antenna spring 810, and the grounding portion 620b and the first circuit board 510 are located on the same side of the second antenna spring 820.

[0084] The first circuit board 510 can sequentially pass through the signal feeding point, the first antenna spring 810 elastically contacting the feeding portion 610b, to introduce the current into the feeding portion 610b of the conductive spring 600. The current in the feeding portion 610b flows into the fixed portion 630b, and flows into the middle frame antenna 430 welded with the fixed portion 630b through the fixed portion 630b, so as to realize the feeding of the middle frame antenna 430. At this time, in addition to the middle frame antenna 430 as the antenna radiator, the conductive spring 600 fixedly connected with the middle frame antenna 430 can also be used as the antenna radiator, which is equivalent to thickening the antenna radiator, and improves the antenna signal quality of the terminal device 1.

[0085] The current flowing into the feeding portion 610b can also flow into the connecting portion 640b. The current flowing into the connecting portion 640b and the current flowing into the fixed portion 630b can both flow into the grounding portion 620b. The current flowing into the middle frame antenna 430 flows into the grounding portion 620b through the fixed portion 630b, and then the current flowing into the grounding portion 620b flows into the ground feeding point of the first circuit board 510 through the second antenna spring 820 elastically contacting the grounding portion 620b, so as to realize the grounding of the middle frame antenna 430.

[0086] Compared with the mode that the feeding portion 610a and the grounding portion 620a in the conductive spring 600 of the first embodiment are located on opposite sides of the fixed portion 630a, in the terminal device 1 provided by the embodiment, since the feeding portion 610b and the grounding portion 620b in the conductive spring 600 are located on the same side of the fixed portion 630b, under the condition that the length of the fixed portion 630b is constant, the length of the conductive spring 600 of the embodiment is shorter, the space occupied by the conductive spring 600 in the length direction can be reduced, thereby facilitating the feeding of the middle frame antenna 430 and the grounding of the middle frame antenna 430 in a smaller space. Under the condition that the space occupied by the conductive spring 600 in the length direction is constant, the extension length of the fixed portion 630b is increased, the welding area between the conductive spring 600 and the middle frame antenna 430 can be increased, thereby improving the connection stability between the conductive spring 600 and the middle frame antenna 430.

[0087] In addition, the fixed portion 630b in the conductive spring 600 of the embodiment is not in the same plane as the feeding portion 610b and the grounding portion 620b, which facilitates the feeding portion 610b and the grounding portion 620b of the conductive spring 600 to be substantially in the same plane as the first circuit board 510 while achieving the fixed connection of the conductive spring 600 to the inner side of the middle frame antenna 430, thereby facilitating the electrical connection of the first circuit board 510 and the conductive spring 600 by using the first antenna spring 810 and the second antenna spring 820, the connection mode is simple, occupies small space, and is suitable for the scenario that the middle frame antenna 430 is close to the first circuit board 510.

[0088] In addition, since the feeding portion 610b and the grounding portion 620b are not in the same plane as the fixed portion 630b, the feeding portion 610b and the grounding portion 620b are easy to be separated from the fixed portion 630b under the action of external force. By arranging the connecting portion 640b between the feeding portion 610b and the grounding portion 620b and connecting the connecting portion 640b with the fixed portion 630b, on the one hand, the connection strength between the feeding portion 610b, the grounding portion 620b and the fixed portion 630b can be enhanced, and the feeding portion 610b or the grounding portion 620b is prevented from being separated from the fixed portion 630b, on the other hand, the current flowing from the feeding portion 610b can also flow into the fixed portion 630b along the connecting portion 640b, and then flow into the middle frame antenna 430 through the fixed portion 630b, so as to achieve the feeding of the middle frame antenna 430. At this time, the added connecting portion 640b can also serve as an antenna radiator, which can further improve the performance of the antenna radiator, and thereby improve the antenna signal quality of the terminal device 1.

[0089] The above only discloses the preferred embodiments of the present application, and of course cannot limit the scope of the rights of the present application, and those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A terminal device, characterized by comprising: The terminal device comprises a middle frame antenna and a conductive spring plate, the conductive spring plate is installed on the inner side of the middle frame antenna, the conductive spring plate comprises a feeding portion, a fixed portion and a grounding portion, the fixed portion is fixedly connected with the middle frame antenna, the feeding portion and the grounding portion are both fixedly connected with the fixed portion, the feeding portion is used for feeding the middle frame antenna, and the grounding portion is used for grounding the middle frame antenna.

2. The terminal device according to claim 1, characterized by The feeding portion and the grounding portion are connected on opposite sides of the fixed portion.

3. The terminal device according to claim 2, characterized by The terminal device further comprises a first circuit board, a first antenna spring plate and a second antenna spring plate, the first antenna spring plate is electrically connected between the first circuit board and the feeding portion of the conductive spring plate, and the second antenna spring plate is electrically connected between the first circuit board and the grounding portion of the conductive spring plate.

4. The terminal device according to claim 3, characterized by The terminal device further comprises a circuit board assembly, the first circuit board is electrically connected with the circuit board assembly, the first antenna spring plate and the second antenna spring plate are both installed on the circuit board assembly and are arranged apart from each other, the first antenna spring plate is electrically connected between the circuit board assembly and the feeding portion of the conductive spring plate, and the second antenna spring plate is electrically connected between the circuit board assembly and the grounding portion of the conductive spring plate.

5. The terminal device according to claim 4, characterized by The circuit board assembly comprises a second circuit board and an electrical connector, the first antenna spring plate and the second antenna spring plate are both installed on and electrically connected with the second circuit board, and the electrical connector is electrically connected between the second circuit board and the first circuit board.

6. The terminal device according to claim 5, characterized by The second circuit board comprises a first part and a second part, the first part is arranged opposite to and apart from the conductive spring plate, the first antenna spring plate and the second antenna spring plate are both installed on the surface of the first part facing the conductive spring plate, the second part is fixedly connected with the first part, and the electrical connector is electrically connected between the second part and the first circuit board.

7. The terminal device according to claim 6, characterized by The first circuit board is arranged opposite to and apart from the second part, the terminal device further comprises a loudspeaker module, the loudspeaker module is located between the first circuit board and the second part, the electrical connector is electrically connected with the second part and extends along the edge of the loudspeaker module to be electrically connected with the first circuit board.

8. The terminal device according to claim 1, characterized by The feeding portion and the grounding portion are both fixedly connected on the same side of the fixed portion and are arranged apart from each other.

9. The terminal device according to claim 8, characterized by The feeding portion is connected with the fixed portion at an angle, and the grounding portion is connected with the fixed portion at an angle.

10. The terminal device according to claim 9, characterized by An angle between the plane where the feeding portion is located and the plane where the fixed portion is located is θ1, θ1 is an obtuse angle, an angle between the plane where the grounding portion is located and the plane where the fixed portion is located is θ2, and θ2 is an obtuse angle.

11. The terminal device according to claim 10, characterized by θ1 = θ2.

12. The terminal device according to any one of claims 8 to 11, characterized by, The conductive spring plate further comprises a connecting portion, the connecting portion is located on the same side of the fixed portion as the feeding portion and the grounding portion, is fixedly connected with the fixed portion, and is connected between the feeding portion and the grounding portion.

13. The terminal device according to any one of claims 8 to 11, characterized by, The terminal device further comprises a first circuit board, a first antenna spring and a second antenna spring, the first antenna spring and the second antenna spring are both mounted on the first circuit board and are arranged apart from each other, the first antenna spring is electrically connected between the first circuit board and the feeding portion of the conductive spring, and the second antenna spring is electrically connected between the first circuit board and the grounding portion of the conductive spring.

14. The terminal device according to claim 13, characterized by The feeding portion and the first circuit board are located on the same side of the first antenna spring, and the grounding portion and the first circuit board are located on the same side of the second antenna spring.

15. The terminal device of claim 1, wherein, The terminal device comprises a first housing, a second housing and a rotating shaft, the rotating shaft is connected between the first housing and the second housing, and the first housing comprises the middle frame antenna.

16. The terminal device of claim 1, wherein, The terminal device comprises a back cover and a middle frame, the middle frame is arranged at the periphery of the back cover and comprises the middle frame antenna.

17. The terminal device of claim 1, wherein, The feeding portion, the fixed portion and the grounding portion are integrally formed.

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