CN113363705B

CN113363705B - Mobile terminal device

Info

Publication number: CN113363705B
Application number: CN202110485827.6A
Authority: CN
Inventors: 胡文龙; 蔡晓涛; 江成; 孟胤
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-08-16
Anticipated expiration: 2041-04-30
Also published as: CN113363705A

Abstract

The application provides a mobile terminal device, including frame antenna, ground connection center and spring coupling spare. The spring connector includes a spring body and two abutments. The two abutting parts are respectively arranged on the spring main body. The frame antenna is provided with a first conduction part. The grounding middle frame is provided with a second conduction part. One abutting part is in contact with and electrically conducted with the first conducting part, the other abutting part is in contact with and electrically conducted with the second conducting part, and the frame antenna adjusts the resonant frequency through the inductance value of the spring main body. In the mobile terminal equipment, the frame antenna is electrically connected with the grounding middle frame through the spring connecting piece, the frame antenna is connected with the grounding middle frame without a PCB (printed Circuit Board), and the PCB is provided with the elastic sheet, the inductance device and the gasket, so that the structure is simplified, and the cost is reduced.

Description

Mobile terminal device

Technical Field

The application relates to the technical field of terminals, in particular to a mobile terminal device.

Background

The mobile terminal equipment has different positions and structures of the frame antenna due to different internal structures and layouts, so that the equivalent frame antenna has different electrical lengths, and therefore, the frame antenna needs to be connected with an inductance device for tuning the frequency to a fixed frequency band; in the existing IFA antenna, left-handed antenna or other antenna forms, the electrical length can be tuned by adjusting the inductance on the grounded tuning branch, so as to adjust the working frequency of the antenna; the existing solution is solved by adding a small PCB (Printed Circuit Board) on which the pads, the spring plates and the inductive elements are soldered. For example, referring to fig. 1 and fig. 2 together, a conventional mobile terminal 200 includes a PCB 201, and an inductance device 202 is disposed on the PCB 201, the PCB 201 is electrically connected to a bezel antenna 204 through a spring 203, and is electrically connected to a ground middle frame 206 through a gasket 205, wherein the PCB 201 is fixed to a housing (not shown) of the mobile terminal 200 or the ground middle frame 206 by a fastener 207; the current on the frame antenna 204 needs to flow back to the grounding middle frame 206 through the elastic sheet 203, the PCB board 201, the inductance device 202 and the gasket 205, the frame antenna working frequency can be tuned by adjusting the inductance device 202, meanwhile, the frame antenna grounding middle frame inductance device 202 can improve the radiation performance of the frame antenna 204, but the arrangement of the inductance device 202 on the PCB board 201 causes the mobile terminal device 200 to have a complex structure and higher cost, and the inductance device 202 is unprotected and is easy to collide and damage.

Disclosure of Invention

In view of the above, the present application provides a mobile terminal device omitting an inductance device.

The application provides mobile terminal equipment which comprises a frame antenna, a grounding middle frame and a spring connecting piece, wherein the spring connecting piece comprises a spring main body and two abutting parts, and the two abutting parts are respectively arranged on the spring main body; the frame antenna is provided with a first conduction part; the grounding middle frame is provided with a second conduction part; the frame antenna and the grounding middle frame are electrically connected through the spring connecting piece, one of the abutting parts is in contact with the first conduction part and is electrically conducted, the other abutting part is in contact with the second conduction part and is electrically conducted, and the frame antenna adjusts the resonant frequency through the inductance value of the spring main body.

In the design, the frame antenna is electrically connected with the grounding middle frame through the spring connecting piece, a PCB (printed circuit board) is not needed for connecting the frame antenna with the grounding middle frame, and the spring plate, the inductance device and the gasket are arranged on the PCB, so that the structure is simplified, and the cost is reduced.

Further, the spring main body is equivalent to an inductance coil, and the spring connecting piece enables the frame antenna to radiate through the grounding middle frame, and can improve the radiation performance of the frame antenna.

In one possible design, different turns of the spring body are insulated from each other, the spring body is formed by bending a spring wire along a spiral path, and the spring connecting piece obtains different inductance values by changing the turns n, the pitch diameter D, the spacing L or the diameter D of the spring wire; the frame antenna adjusts the resonant frequency through different inductance values of the spring main body; the distance L is the axial distance of two adjacent circles of corresponding points of the spring main body on the middle diameter when the spring connecting piece is arranged between the frame antenna and the grounding middle frame.

In the above design, the spring connecting piece with different inductance values is obtained by changing the number of turns n, the pitch diameter D, the pitch L of the spring body or the diameter D of the spring wire, and the spring connecting piece can realize the adjustment of the resonant frequency of the antenna to different frequencies.

In a possible design, the spring body can elastically deform and drive the two abutting portions to elastically abut against the first conduction portion and the second conduction portion respectively.

In the above design, the deformation of the spring main body enables the two abutting portions to apply an acting force to the first conduction portion and the second conduction portion, so that the two abutting portions are in stable elastic contact with the first conduction portion and the second conduction portion respectively, and the spring connecting piece is high in reliability of electric connection with the frame antenna and the grounding middle frame respectively.

In one possible design, the spring connector is a torsion spring structure, and the abutting portion includes an elastic arm and a contact portion; one end of the elastic arm is arranged on the spring main body, and the other end of the elastic arm extends towards one side of the spring main body; the contact part is arranged at one end, far away from the spring body, of the elastic arm, and the contact part is in elastic contact with the first conduction part or the second conduction part.

In the above design, the length of the elastic arm and the position of the elastic arm on the spring main body may be set according to the relative position of the first conduction part and the second conduction part and the installation space of the spring connector, so that the relative position of the frame antenna and the grounding middle frame can be flexibly set.

In one possible design, the spring connector is a torsion spring structure, and at least one abutting part of the spring connector is arranged at the end part of the spring main body; the abutting part is elastically contacted with the first conduction part or the second conduction part.

In the above design, the abutting portion is provided at an end portion of the spring main body, so that an installation space of the spring connector is saved.

In one possible design, the mobile terminal device further includes a positioning element, and the positioning element is of a cylinder structure; the positioning piece is abutted against the inner side of the spring main body, or the positioning piece is abutted against the inner side and the outer side of the spring main body simultaneously.

In the design, when the number of turns of the spring main body is greater than or equal to 1, the positioning piece extends into the inner side of the spring main body and abuts against the inner side of the spring main body, and the positioning piece can limit the movement of the spring connecting piece; when the number of turns of the spring main body is smaller than 1, the positioning piece abuts against the inner side and the outer side of the spring main body at the same time, and the positioning piece can limit the movement of the spring connecting piece. The setting element first conduction portion with second conduction portion simultaneously to the spring coupling spare is real to exert force, makes spring coupling spare is in fixed position in the mobile terminal equipment has further improved spring coupling spare respectively with the frame antenna with the reliability that the frame electricity is connected in the ground connection.

In one possible design, the spring connector is a compression spring structure, and the two abutting parts are respectively arranged at two opposite ends of the spring main body; the two abutting parts are respectively in elastic contact with the first conduction part and the second conduction part.

In the above design, the two abutting portions are respectively arranged at two opposite ends of the spring main body, the spring main body drives the two abutting portions to abut against the first conduction portion and the second conduction portion respectively by means of compressed elastic force, and therefore the mounting space of the spring connecting piece is saved.

In a possible design, the mobile terminal device further includes a positioning member, the positioning member is provided with a groove, and the groove accommodates the spring main body and abuts against the outer side of the spring main body.

In the above design, the groove of the positioning member can limit the movement of the spring connecting member, and the first conduction part and the second conduction part are simultaneously abutted against the spring connecting member, so that the spring connecting member is positioned.

In one possible design, the frame antenna and/or the grounding middle frame are respectively provided with a positioning groove, and part of the spring connecting piece is accommodated in the positioning groove.

In the above design, the positioning groove can limit the movement of the spring connecting piece, and the positioning groove and the first conduction part and the second conduction part simultaneously abut against the spring connecting piece, so that the spring connecting piece is positioned.

In a possible design, the number of the first conduction parts or the second conduction parts is multiple, and the multiple first conduction parts or the multiple second conduction parts can be in contact with the abutting parts of the spring body when the number of turns is different and conduct.

In the above design, the first conduction part or the second conduction part is provided in a plurality of numbers, and the spring connecting piece can be connected when the number of turns of the spring main body is different, namely the spring connecting piece can be connected with different inductance values, so that the frame antenna can be connected with different structures.

In a possible design, the grounding middle frame is provided with at least one guide connection part, and the second conduction part is arranged on the guide connection part.

In the above design, the conductive part can be disposed at different positions on the grounding middle frame, so as to form different positional relationships with the first conductive part of the frame antenna, thereby satisfying the installation of the spring connecting pieces with different inductance values; or the grounding middle frame is connected with the frame antennas with different structures, so that the same signal radiation effect is realized; or adapt to different positions of the frame antenna, so that the spring connecting piece can be connected with the frame antenna and the grounding middle frame. The grounding middle frame is provided with the guide connection part, so that the design flexibility of the frame antenna and the spring connecting piece is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a conventional mobile terminal device;

fig. 2 is a schematic structural view illustrating the mobile terminal device shown in fig. 1, in which a PCB, a spring, an inductor, a fastener, and a gasket are assembled together;

fig. 3 is a schematic structural diagram of a mobile terminal device according to a first embodiment of the present application;

fig. 4 is a schematic structural diagram of the mobile terminal device shown in fig. 3, taken along a cross-section;

fig. 5 is a parameter diagram of a spring main body in the mobile terminal device shown in fig. 3;

FIG. 6 is a graph illustrating the efficiency of the bezel antenna operating at different frequencies for the first embodiment and the prior art bezel antenna;

fig. 7 is a return loss curve diagram of the frame antenna working at different frequencies when the number of turns of the spring main body in the mobile terminal device is different;

fig. 8 is a simplified schematic view of the structure of the mobile terminal device when the number of turns of the spring body is less than 1;

fig. 9 and fig. 10 are respectively simplified schematic diagrams of the structure of the mobile terminal device when the included angle α is different;

fig. 11 is a simplified structural schematic diagram of a mobile terminal device according to a second embodiment of the present application;

fig. 12 is a simplified structural diagram of the mobile terminal device shown in fig. 11 from another perspective;

fig. 13a and 13b are schematic structural views illustrating a plurality of second conduction parts respectively contacting with the abutting part when the number of turns of the spring body is different in different embodiments;

fig. 14 is a simplified schematic structural diagram of a mobile terminal device according to a third embodiment of the present application;

fig. 15 to 17 are simplified schematic diagrams of the mobile terminal device when the positioning slot is disposed on the frame antenna and/or the grounding middle frame, respectively.

Description of the main elements

Mobile terminal device

100, 100b, 100e, 200

PCB board 201

Inductive device 202

Spring plate 203

Shim 205

Fastener 207

Bezel

antenna

10, 204

First conduction part 11

Grounded

middle frame

20, 206

Second conduction parts

21, 21b, 21c, 21d, 21e

The lead-in

parts

25, 25b, 25c, 25d

Spring connection

30, 30a, 30b, 30e

Spring bodies

31, 31a, 31b, 31c, 31d, 31e

Mandrels 301, 301e

First abutment

33, 33e

Second abutment

35, 35b, 35c, 35d, 35e

Resilient arms

331, 351

Contact

part

333, 353

Positioning

element

40, 40a, 40e

First positioning portion 41a

Second positioning portion 43a

Groove 41e

Positioning

grooves

101, 103, 105, 107

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

To further explain the technical means and effects of the present application for achieving the intended application, it is apparent that the embodiments described below are only a part of the embodiments of the present application, rather than all embodiments, in combination with the accompanying drawings and the embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Some embodiments of the present application provide a mobile terminal device, including a frame antenna, a grounding middle frame, and a spring connector, where the spring connector includes a spring main body and two abutting portions, and the two abutting portions are respectively disposed on the spring main body; the frame antenna is provided with a first conduction part; the grounding middle frame is provided with a second conduction part; the frame antenna is electrically connected with the grounding middle frame through the spring connecting piece, one abutting part is in contact with the first conduction part and is electrically conducted, and the other abutting part is in contact with the second conduction part and is electrically conducted.

In the mobile terminal equipment, the frame antenna is electrically connected with the grounding middle frame through the spring connecting piece, the frame antenna is connected with the grounding middle frame without a PCB and without an elastic sheet, an inductance device and a gasket arranged on the PCB, the structure is simplified, and the cost is reduced.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

Referring to fig. 3 and fig. 4, a mobile terminal device 100 is provided in a first embodiment of the present application. The mobile terminal device 100 includes a bezel antenna 10, a ground middle frame 20, and a spring connector 30. The mobile terminal device 100 is a cellular phone, but is not limited thereto. The mobile terminal device 100 includes, but is not limited to, a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), and the like. The bezel antenna 10 is disposed on a bezel structure of the mobile terminal device 100. The spring connector 30 includes a spring body 31 and two abutments. The two abutments are respectively a first abutment 33 and a second abutment 35. The first contact portion 33 and the second contact portion 35 are provided on the spring main body 31, respectively. The frame antenna 10 is provided with a first conduction part 11. The grounding middle frame 20 is provided with a second conduction part 21. The bezel antenna 10 and the ground middle bezel 20 are electrically connected by a spring connector 30. Specifically, the first abutting portion 33 is in contact with and electrically conducted to the first conduction portion 11. The second abutting portion 35 is in contact with and electrically conducted to the second conduction portion 21.

The first conduction part 11 and the second conduction part 21 are each a planar structure, but not limited thereto. For example, in another embodiment, the first conduction part 11 and/or the second conduction part 21 may also have a curved surface structure; in another embodiment, the first conductive part 11 or the second conductive part 21 may have a recessed groove structure. As long as the two abutting portions can be in contact with the first conduction portion 11 and the second conduction portion 21, respectively, the bezel antenna 10 and the ground middle bezel 20 can be electrically connected by the spring connector 30.

The frame antenna 10 is connected to a power supply, and the grounding middle frame 20 is grounded. Radio frequency signals are radiated through the grounded center frame 20 after passing through the spring connector 30. It is understood that in other embodiments, the grounded middle frame 20 may be grounded and configured to adjust the radiation frequency.

The frame antenna 10 is electrically connected with the grounding middle frame 20 through the spring connecting piece 30, the connection of the frame antenna 10 and the grounding middle frame 20 does not need a PCB (printed Circuit Board), and an elastic sheet, an inductance device and a gasket are arranged on the PCB, so that the structure is simplified, and the cost is reduced.

Spring main part 31 is electrically conducted with frame antenna 10 and ground connection center 20 respectively through two butt portions, and the electric current on the frame antenna 10 flows back to ground connection center 20 through spring connecting piece 30, and the branch knot that spring main part 31 is located is the tuned branch knot of ground connection of frame antenna 10, and resonant frequency can be adjusted through the different inductance values that obtain by setting up the spring main part 31 of different circles to frame antenna 10. The spring main body 31 is equivalent to an inductance coil, and can improve the radiation performance of the bezel antenna 10. The mobile terminal device 100 omits an inductance component, and only one spring connector 30 is used to achieve radiation of the rf signal, and at the same time, improve the radiation performance of the bezel antenna 10.

Further, the spring connecting piece 30 does not need protection, and is simple in structure and easy to install.

Referring to fig. 5, the spring body 31 is insulated from each other for different turns. The spring body 31 is substantially a structure formed by bending a spring wire made of a metal material along a spiral path. For example, the spring main body 31 may be made of metal such as titanium copper, stainless steel, or the like. And each two adjacent circles of spring wires are insulated, for example, the outer parts of the spring wires can be coated with an insulating medium, or the distance between the two adjacent circles of spring wires is ensured to be larger than zero, and the insulation is realized in a way that the spring wires of the two adjacent circles are not in contact.

The number of turns n of the spring main body 31 is 1.5 turns, the diameter D of the spring wire is 0.3mm, the pitch diameter D of the spring main body 31 is 2mm, and when the spring connecting piece 30 is installed between the frame antenna 10 and the grounding middle frame 20, the axial distance of the corresponding points of the two adjacent turns of the spring main body 31 on the pitch diameter is the interval L, and the interval L is 1 mm. When the bezel antenna 10, the spring connecting member 30 and the grounding middle bezel 20 are electrically conducted, a return loss curve graph of the bezel antenna 10 working at different frequencies is obtained, as shown by a curve S2 shown in fig. 7, and equivalently, the inductance value of the spring connecting member 30 is 1.7 nH.

The spring body 31 can obtain different inductance values by changing the diameter D, the number of turns n, the pitch diameter D or the distance L of the spring wire. The larger the number of turns n of the spring body 31, the larger the pitch diameter D, the larger the spring wire diameter D, or the smaller the pitch L, the larger the inductance value of the spring body 31.

For example, referring to fig. 7, a curve S1 shows return loss of the border antenna 10 operating at different frequencies when the number n of turns of the spring main body 31 is 1; the curve S2 shows the return loss of the frame antenna 10 when the number of turns n of the spring main body 31 is 1.5 and the frame antenna operates at different frequencies; the curve S3 shows the return loss of the frame antenna 10 working at different frequencies when the number of turns n of the spring main body 31 is 2; curve S4 shows the return loss of the bezel antenna 10 operating at different frequencies when the number of turns n of the spring main body 31 is 2.5. It can be concluded that the inductance of the spring connector 30 increases with the number of turns n of the spring body 31, and increases by about 0.8nH when the number of turns n of the spring body 31 increases by one turn.

The inductance value of the inductance device 202 in the prior art and the equivalent inductance value of the spring connector 30 in this embodiment are set to be the same, and the detected frame antenna efficiency is as shown in fig. 6. The curve S5 shows the frame antenna efficiency of the frame antenna 204 working at different frequencies, and the curve S6 shows the frame antenna efficiency of the frame antenna 10 working at different frequencies in this embodiment. The bezel antenna 10 in this embodiment has substantially the same bezel antenna efficiency as the bezel antenna 204 in the prior art, but the peak value of the bezel antenna efficiency of the bezel antenna 10 in this embodiment is higher than the peak value of the bezel antenna efficiency of the bezel antenna 204 in the prior art.

Therefore, the spring connector 30 can improve not only the radiation performance of the bezel antenna 10 but also the bezel antenna efficiency.

Referring to fig. 4, the grounding middle frame 20 is provided with a conductive portion 25. The second conduction portion 21 is provided on the conduction portion 25. The frame antenna 10, the spring connector 30, and the second conduction part 21 are electrically conducted in this order. The conductive connection portion 25 may be disposed at various positions on the ground middle frame 20 to adapt to the position of the bezel antenna 10, so that the spring connection member 30 can connect the bezel antenna 10 and the ground middle frame 20. The conductive portion 25 is disposed at different positions on the grounding middle frame 20, and further forms different positional relationships with the first conductive portion 11 of the bezel antenna 10, thereby satisfying the installation of the spring connecting members 30 having different inductance values. The conductive connection parts 25 are arranged at different positions on the grounding middle frame 20, so that the grounding middle frame 20 can be electrically connected with the frame antennas 10 with different structures, and the same signal radiation effect can be realized. The conductive portion 25 is disposed on the grounding middle frame 20, so that the flexibility of the design of the frame antenna 10 and the spring connecting member 30 is improved. It is understood that in other embodiments, the connecting portion 25 may be omitted, and the second conducting portion 21 may be a side surface of the grounding middle frame 20.

Referring to fig. 3, the spring body 31 can elastically deform and drive the two abutting portions to elastically abut against the first conduction portion 11 and the second conduction portion 21, respectively. Specifically, the spring body 31 may be twisted or compressed to generate a deformation amount, and the spring body 31 has a force (referred to as a restoring force) to restore its original shape. The restoring force urges the first contact portion 33 and the second contact portion 35 located on the spring body 31 to the outside, and the first contact portion 33 and the second contact portion 35 are brought into contact with the first conduction portion 11 and the second conduction portion 21, respectively.

The deformation of the spring body 31 enables the two abutting portions to apply an acting force to the first conduction portion 11 and the second conduction portion 21, and further enables the two abutting portions to be stably contacted with the first conduction portion 11 and the second conduction portion 21, respectively, and the spring connecting member 30 is electrically conducted with the bezel antenna 10 and the grounding middle frame 20, respectively, with high reliability.

The spring connector 30 is of a torsion spring construction. The spring body 31 is elastically deformable by being twisted, and the first contact portion 33 and the second contact portion 35 are brought into contact with the first conduction portion 11 and the second conduction portion 21 by the restoring force after the twisting, but the present invention is not limited thereto. For example, in another embodiment, the spring connector 30 may have a compression spring structure, and the spring body 31 may be compressed and elastically deformed, and the two abutting portions may abut against the first conduction portion 11 and the second conduction portion 21, respectively, by a restoring force after the compression.

It is understood that, in other embodiments, the spring main body 31 may not be deformed, and in the natural state of the spring connecting element 30, the first abutting portion 33 is in contact with and electrically conducted to the first conduction portion 11, and the second abutting portion 35 is in contact with and electrically conducted to the second conduction portion 21, so that radiation of the bezel antenna 10 to the ground bezel 20 can be realized, and the radiation performance of the bezel antenna 10 can be improved by the spiral spring main body 31.

Referring to fig. 3 and 4, the mobile terminal device 100 further includes a positioning element 40. The positioning member 40 acts on the spring connector 30 to fix the position of the spring connector 30 in the mobile terminal device 100. Specifically, in order to stabilize the position of the deformed spring main body 31 inside the mobile terminal device 100, the positioning member 40, the first conduction part 11 and the second conduction part 21 cooperate to act on the spring connector 30 to fix the spring connector 30. The positioning member 40 is a column structure. The positioning member 40 is a structure injection-molded on the grounding middle frame 20 and is perpendicular to the grounding middle frame 20, but is not limited thereto. The positioning member 40 can protrude into the inside of the spring body 31 in a direction parallel to the spindle 301 of the spring body 31. When the number of turns n of the spring body 31 is more than or equal to 1, the positioning member 40 can limit the movement of the spring connecting member 30. As the spring body 31 deforms, the restoring force of the spring body 31 urges the first abutting portion 33 to abut against the first conduction portion 11, and the second abutting portion 35 to abut against the second conduction portion 21. The first conduction part 11 and the second conduction part 21 exert a reaction force on the spring receiver 30, and further restrict the rotation of the spring receiver 30.

The positioning member 40, the first conduction part 11 and the second conduction part 21 simultaneously apply force to the spring connection member 30 to limit the movement and rotation of the spring connection member 30, so that the position of the spring connection member 30 in the mobile terminal device 100 is fixed, and the reliability of the electrical connection between the spring connection member 30 and the frame antenna 10 and the grounding middle frame 20 is further improved.

Referring to fig. 8, in another embodiment, the number of turns n of the spring body 31a is less than 1. The positioning member 40a includes a first positioning portion 41a and a second positioning portion 43 a. The first positioning portion 41a and the second positioning portion 43a abut against opposite sides of the spring main body 31a, respectively, to restrict the movement of the spring main body 31 a. The restoring force of the spring body 31a is used to drive the first abutting portion 33 to abut against the first conduction portion 11 and drive the second abutting portion 35 to abut against the second conduction portion 21, and the first conduction portion 11 and the second conduction portion 21 limit the rotation of the spring connecting piece 30 a.

It is understood that in other embodiments, the positioning member 40 may have a substantially L-shaped column structure, and after the spring body 31 is mounted on the positioning member 40, the mandrel 301 of the spring body 31 is parallel to the grounding middle frame 20.

It is understood that in other embodiments, the positioning member 40 may be a structure injection-molded on the housing (not shown) of the mobile terminal device 100; alternatively, the positioning element 40 may be a protruding metal column structure on the grounding middle frame 20 or the housing, and the positioning element 40 extends into the interior of the spring main body 31 and is insulated from the spring main body 31.

It can be understood that, in other embodiments, the positioning element 40 may also be of a colloid structure, and after the first abutting portion 33 contacts the first conduction portion 11, the positioning element 40 is wrapped outside the first abutting portion 33 and is simultaneously adhered to the first conduction portion 11, so that the first abutting portion 33 and the first conduction portion 11 are relatively fixed. The second contact portion 35 and the second conduction portion 21 are fixed to each other by the spacer 40.

The first abutting portion 33 and the second abutting portion 35 have the same structure. The first abutment 33 includes an elastic arm 331 and a contact portion 333. The second abutment portion 35 includes an elastic arm 351 and a contact portion 353. The elastic arm 331 has one end provided to the spring body 31 and the other end extending to one side of the spring body 31. The contact part 333 is located at an end of the elastic arm 331 remote from the spring main body 31. One end of the contact part 333 is provided on the elastic arm 331, and the other end is bent and extended toward one side of the elastic arm 331. One end of the elastic arm 351 is disposed at one end of the spring body 31 away from the elastic arm 331, and the other end of the elastic arm 351 extends toward one side of the spring body 31. The contact portion 353 is located at an end of the elastic arm 351 remote from the spring body 31. One end of the contact portion 353 is provided on the elastic arm 351, and the other end is bent and extended toward one side of the elastic arm 351. The first conduction part 11 and the second conduction part 21 are located at opposite sides of the spring connector 30. The angle α between the extending directions of the orthogonal projections of the

elastic arms

331 and 351 on the cross section is acute. The cross section is perpendicular to the spindle 301. The elastic arm 331 urges the contact portion 333 to elastically contact the first conduction portion 11 by the restoring force of the spring body 31, and the elastic arm 351 urges the contact portion 353 to elastically contact the second conduction portion 21 by the restoring force of the spring body 31.

It is understood that in other embodiments, the contact portion 333 may also be an end surface of the elastic arm 331, and/or the contact portion 353 may also be an end surface of the elastic arm 351.

It is understood that, in other embodiments, the first abutting portion 33 or the second abutting portion 35 may also be disposed at the end of the spring body 31, and the structure of the elastic arm 351 is omitted, so as to save the installation space of the spring connector 30.

It is understood that the included angle α may be between 0 ° and 360 ° according to the relative positions of the first conduction part 11 and the second conduction part 21 and the installation space of the spring connector 30. For example, referring to fig. 9, in another embodiment, the first conduction part 11 and the second conduction part 21 are located at two opposite sides of the spring connector 30, and the included angle α is greater than 180 °; referring to fig. 10, in another embodiment, the first guiding portion 11 and the second guiding portion 21 are located on the same side of the spring connector 30, and an included angle α is an obtuse angle.

It can be understood that the lengths of the

elastic arms

331 and 351 and the positions of the

elastic arms

331 and 351 on the spring main body 31 can be changed to adapt to the position change of the first conduction part 11 and the second conduction part 21 or to adapt to different installation spaces of the spring connecting element 30, so that the relative position of the bezel antenna 10 and the grounding middle frame 20 can be flexibly set.

It is understood that, in other embodiments, the number of the first conduction parts 11 or the second conduction parts 21 may be plural, and the plural first conduction parts 11 or the plural second conduction parts 21 can contact and conduct with the contact parts of the spring main body 31 at different turns.

Second embodiment

Referring to fig. 11 and 12, the mobile terminal device 100b of the second embodiment has substantially the same structure as the mobile terminal device 100 of the first embodiment, except that: in the mobile terminal device 100b of the second embodiment, the second abutting portion 35b of the spring connector 30b is different in structure from the second abutting portion 35 and the guide portion 25b of the first embodiment; the number of turns n of the spring main body 31b of the mobile terminal apparatus 100b is 3.

The second abutment portion 35b is provided at an end of the spring main body 31 b. The second abutting portion 35b has a planar structure and overlaps with the end surface of the spring main body 31b, but is not limited thereto. The second conduction part 21b of the conduction part 25b is fitted to the second contact part 35 b. The spring body 31b can be twisted to urge the first abutting portion 33 into contact with the first conduction portion 11 and the second abutting portion 35b into contact with the second conduction portion 21.

It is understood that, in other embodiments, the second abutting portion 35b may also have a block structure, a spherical structure, a groove structure, or the like, as long as the second conduction portion 21b is adapted to the second abutting portion 35b and can contact with the second abutting portion 35 b.

The second abutting portion 35b is provided at the end of the spring main body 31b, saving the installation space of the spring attachment 30 b.

It is understood that, in other embodiments, the first abutting portion 33b may be disposed at an end portion of the spring main body 31b, and is in contact with and electrically conducted to the first conduction portion 11.

The position of the conductive portion 25b on the grounding middle frame 20 can be set according to the position of the frame antenna 10, so that the spring connector 30 is easily contacted with the frame antenna 10 and the conductive portion 25, that is, the first conductive portion 11, the spring connector 30b, and the second conductive portion 21 of the frame antenna 10 are easily electrically connected.

It is understood that, in other embodiments, the number of the first conduction parts or the second conduction parts is multiple. The plurality of first conduction portions or the plurality of second conduction portions can be in contact with the contact portions of the spring body 31b at different turns and conducted. For example, in another embodiment, the number of the conduction portions of the grounding middle frame (not shown) is two, namely, the conduction portion 25c and the conduction portion 25 d. The second conduction part 21c of one of the conduction parts 25c is used for contacting with the second contact part 35c when the number n of turns of the spring main body 31c is 1.5, as shown in fig. 13 a; the second conduction portion 21d of the other conduction portion 25d is used to contact the second contact portion 35d when the number n of turns of the spring main body 31d is 2, as shown in fig. 13 b.

First conduction part or second conduction part set up to a plurality ofly, can connect the spring attachment 30b of the number of turns difference of spring main part, can be in order to connect the spring attachment 30b of different inductance values to be connected with the frame antenna 10 of isostructure not.

Third embodiment

Referring to fig. 14, in the third embodiment, a spring attachment 30e of a mobile terminal device 100e includes a spring main body 31e and two abutting portions. The number of turns n of the spring body 31e is 5, but not limited thereto. The two abutting portions are a first abutting portion 33e and a second abutting portion 35e, respectively. The spring connector 30e is a compression spring structure. The first abutting portion 33e and the second abutting portion 35e are provided at opposite ends of the spring main body 31e, respectively. The first abutting portion 33e and the second abutting portion 35e are perpendicular to the spindle 301e of the spring main body 31e, respectively. The first conduction part 11 and the second conduction part 21e are provided on opposite sides of the spring connector 30 e. The second conductive part 21e is a side surface of the grounding middle frame 20, but is not limited thereto. The spring body 31e can be compressed, and the first contact portion 33e is urged to contact the first conduction portion 11 and the second contact portion 35e is urged to contact the second conduction portion 21e by the restoring force.

The first abutting portion 33e and the second abutting portion 35e are respectively planar structures and respectively overlap with end surfaces of the opposite ends of the spring main body 31e, but the invention is not limited thereto. The two ends of the spring main body 31e can directly abut against the first conduction part 11 and the second conduction part 21e, so that the installation space of the spring connector 30e is saved.

The first contact portion 33e or the second contact portion 35e may have a curved surface structure, a block structure, a recessed groove structure, or the like provided at the end of the spring body 31 e. As long as the two abutting portions can be brought into contact with and electrically conducted to the first conduction part 11 and the second conduction part 21, respectively, the bezel antenna 10 and the ground middle bezel 20 can be electrically connected by the spring connection member 30 e.

In order to fix the position of the spring attachment 30e within the mobile terminal device 100e, the mobile terminal device 100e includes a positioning member 40 e. The positioning member 40e is provided with a recess 41 e. The groove 41e receives the spring body 31e and abuts on the outside of the spring body 31e to restrict the movement of the spring attachment 30 e.

The groove 41e of the positioning member 40e can limit the movement of the spring connecting member 30e, and abuts against the spring connecting member 30e together with the first conduction part 11 and the second conduction part 21e, so that the spring connecting member 30e is positioned. To further stabilize the position of the spring connector 30e, in other embodiments, the grounding middle frame 20 is provided with a positioning groove 101, and a portion of the spring connector 30e is accommodated in the positioning groove 101, as shown in fig. 15; alternatively, the frame antenna 10 is provided with a positioning slot 103, and a part of the spring connecting piece 30e is accommodated in the positioning slot 103, as shown in fig. 16; alternatively, the frame antenna 10 is provided with the positioning groove 105, the grounding middle frame 20 is provided with the positioning groove 107, and both ends of the spring connecting member 30e are respectively accommodated in the positioning groove 105 and the positioning groove 107, as shown in fig. 17.

The positioning groove 101/103/105/107 can limit the movement of the spring connector 30e, and simultaneously with the first conduction part 11 and the second conduction part 21e, the spring connector 30e is abutted against the spring connector 30e, so that the spring connector 30e is positioned.

It is understood that in other embodiments, the positioning slot 101/103/105/107 may be omitted.

It is understood that in other embodiments, the positioning member 40e can be omitted, and the spring connecting member 30e can be received in the positioning slot 101/103/105/107 for positioning.

Further, two butt portions of the spring connecting piece are respectively electrically conducted with the frame antenna and the grounding middle frame, and the spring main body between the two butt portions is equivalent to the inductance coil, so that the radiation performance of the frame antenna can be improved.

Although the present application has been described in detail with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.

Claims

1. The utility model provides a mobile terminal equipment, includes frame antenna and ground connection center, its characterized in that still includes spring coupling spare, spring coupling spare is the torsion spring structure, and includes:

a spring body elastically deformable;

two abutting parts respectively arranged on the spring main body; at least one of the abutting parts comprises an elastic arm and a contact part, one end of the elastic arm is arranged on the spring main body, and the other end of the elastic arm extends towards one side of the spring main body; the contact part is arranged at one end of the elastic arm far away from the spring main body;

the frame antenna is provided with a first conduction part;

the grounding middle frame is provided with a second conduction part;

the frame antenna is electrically connected with the grounding middle frame through the spring connecting piece, one abutting part is in contact with and electrically conducted with the first conduction part, the other abutting part is in contact with and electrically conducted with the second conduction part, and the spring main body can drive the two abutting parts to elastically abut against the first conduction part and the second conduction part respectively; the contact part contacts the first conduction part or the second conduction part, wherein the frame antenna adjusts a resonant frequency by changing the number of turns of the spring main body to obtain different inductance values.

2. The utility model provides a mobile terminal equipment, includes frame antenna and ground connection center, its characterized in that still includes spring coupling spare, spring coupling spare is the torsion spring structure, and includes:

a spring body elastically deformable;

two abutting parts respectively arranged on the spring main body; at least one of the abutting portions is provided at an end of the spring main body;

the frame antenna is provided with a first conduction part;

the grounding middle frame is provided with a second conduction part;

the frame antenna is electrically connected with the grounding middle frame through the spring connecting piece, one abutting part is in contact with and electrically conducted with the first conduction part, and the other abutting part is in contact with and electrically conducted with the second conduction part; the spring main body can drive the two abutting parts to elastically abut against the first conduction part and the second conduction part respectively; the frame antenna obtains different inductance values by changing the number of turns of the spring main body to adjust the resonant frequency.

3. The mobile terminal device according to claim 1 or 2, characterized by: the spring connecting piece can also obtain different inductance values by changing the middle diameter D and the distance L of the spring main body or the diameter D of the spring wire; the frame antenna adjusts the resonant frequency through different inductance values of the spring main body; the distance L is the axial distance of two adjacent circles of corresponding points of the spring main body on the middle diameter when the spring connecting piece is arranged between the frame antenna and the grounding middle frame.

4. The mobile terminal device according to claim 1 or 2, characterized by: the mobile terminal equipment further comprises a positioning piece which is of a cylinder structure; the positioning piece is abutted against the inner side of the spring main body, or the positioning piece is abutted against the inner side and the outer side of the spring main body simultaneously.

5. The mobile terminal device according to claim 1 or 2, characterized by: the number of the first conduction parts or the second conduction parts is multiple, and the first conduction parts or the second conduction parts can be in contact with and conducted on the contact parts when the number of turns of the spring body is different.

6. The mobile terminal device according to claim 1 or 2, characterized by: the grounding middle frame is provided with at least one guide connection part, and the second guide connection part is arranged on the guide connection part.