CN107660060B - Grounding elastic sheet, grounding device and mobile terminal - Google Patents

Abstract

The present invention discloses a grounding spring, a grounding device and a mobile terminal. The grounding spring comprises a fixing part and an elastic part fixedly connected to the fixing part. The fixing part is used to fix an electronic module to ground the electronic module electrostatically. The elastic part is elastically compressed between the electronic module and the grounding electrode to elastically contact the grounding electrode and transfer static electricity. The grounding spring is firmly fixed between the electronic module and the grounding electrode, and transfers the static electricity of the electronic module to the grounding electrode to eliminate static electricity, thereby improving the stability of the grounding device and enhancing safety performance.

Description

Grounding shrapnel, grounding device and mobile terminal

technical field

The present invention relates to the field of electronic equipment, in particular to a grounding spring, a grounding device and a mobile terminal.

Background technique

At present, the size of mobile phones is getting larger and larger. In order to ensure the overall strength of the mobile phone, there are more and more metal structural parts in the mobile phone components. However, the metal structural parts are easily disturbed by static electricity. The metal structure is connected to the ground electrode through the ground conductor, so as to transfer the static electricity of the metal structure to the ground electrode, so as to eliminate the static electricity interference. However, at present, the ground conductor that transfers the static electricity of the metal structure to the ground electrode is easily separated from the metal structure, so that the static electricity interference cannot be eliminated.

SUMMARY OF THE INVENTION

The invention provides a grounding elastic sheet with stable structure, a grounding device and a mobile terminal.

The present invention provides a grounding elastic sheet, wherein the grounding elastic sheet includes a fixing portion and an elastic portion that is fixedly connected to the fixing portion, and the fixing portion is used for fixing and connecting an electronic module, so that the electronic module is electrostatically grounded, The elastic portion is elastically compressed between the electronic module and the ground electrode to elastically resist the ground electrode and transmit static electricity.

Wherein, the fixing portion is provided with a screw hole, and the screw hole is used for installing a screw, so that the fixing portion is fixedly connected to the electronic module.

The present invention also provides a grounding device, wherein the grounding device includes a grounding electrode, an electronic module and a grounding elastic sheet, the electronic module is fixed on the grounding electrode, and the grounding elastic sheet includes a fixing portion and a fixed connection the elastic part of the fixing part, the fixing part is fixed on the electronic module, so that the electronic module is electrostatically grounded, and the elastic part is elastically compressed between the electronic module and the ground electrode, so as to The elasticity resists the ground electrode and transfers static electricity.

The electronic module includes a bottom end that is fixedly connected to the ground electrode, the bottom end is provided with a first accommodating cavity with an opening facing the ground electrode, the first accommodating cavity accommodates the elastic portion, and the The elastic portion is elastically connected between the bottom surface of the first accommodating cavity and the ground electrode.

Wherein, the electronic module further includes a side wall integrated with the bottom end, the side wall is provided with a second accommodating cavity that intersects with the first accommodating cavity, and the second accommodating cavity is screwed to connect the Fixed part.

Wherein, the bottom end of the first receiving cavity is provided with a first positioning portion, the grounding elastic sheet further includes a second positioning portion fixed between the elastic portion and the fixing portion, and the second positioning portion is accommodated in the The first accommodating cavity is matched with the first positioning portion.

Wherein, the elastic portion includes a support end that is fixedly connected to the fixed portion and a contact end arranged opposite to the support end, the contact end is provided with an arc-shaped hook, and the bottom end of the first receiving cavity is also provided with a receiving place The groove of the curved hook.

Wherein, the electronic module includes a metal casing and electronic components fixed in the metal casing.

Wherein, the ground electrode is a metal plate.

The present invention also provides a mobile terminal, wherein the mobile terminal includes a casing, a ground electrode, an electronic module and a ground spring, the ground electrode is fixed inside the casing, and the electronic module is fixed on the On the ground electrode, the ground elastic sheet includes a fixed part and an elastic part fixedly connected to the fixed part, the fixed part is screwed to the electronic module to receive the static electricity of the electronic module, and the elastic part is elastic It is compressed between the electronic module and the ground electrode to elastically resist the ground electrode and transfer static electricity.

Wherein, the mobile terminal further includes a circuit board, the circuit board is fixed on the inner side of the casing, and the ground electrode is arranged on the circuit board.

Wherein, the housing includes a front cover and a rear cover that is closed relative to the front cover, the ground electrode, the electronic module and the ground spring are all located between the front cover and the rear cover, and the ground Electrodes are arranged on the back cover.

In the grounding elastic sheet, the grounding device and the mobile terminal of the present invention, the grounding elastic sheet includes a fixing portion and an elastic portion that is fixedly connected to the fixing portion, and the fixing portion is screwed to the electronic module to receive the electronic module. The elastic part is elastically compressed between the electronic module and the ground electrode, so as to elastically interfere with the ground electrode and transmit static electricity, so that the ground elastic sheet is stabilized on the electronic module and the ground between the electrodes, and transfer the static electricity of the electronic module to the grounding electrode to eliminate static electricity, so that the grounding device improves the stability and safety performance.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the following will briefly introduce the accompanying drawings used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, which are common in the art. As far as technical personnel are concerned, other drawings can also be obtained based on these drawings without any creative effort.

1 is an exploded schematic view of a grounding device provided by the present invention;

FIG. 2 is a front view of the grounding device of FIG. 1;

FIG. 3 is a schematic cross-sectional view along II-II of the grounding device of FIG. 2 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , the present invention provides a grounding device 100 , the grounding device 100 includes a grounding electrode 10 , an electronic module 20 and a grounding spring 30 , the electronic module 20 is fixed on the On the ground electrode 10 , the ground elastic sheet 30 includes a fixing portion 31 and an elastic portion 32 fixedly connected to the fixing portion 31 , and the fixing portion 31 is screwed to the electronic module 20 to receive the electronic module 20 The elastic portion 32 is elastically compressed between the electronic module 20 and the ground electrode 10 to elastically resist the ground electrode 10 and transmit static electricity. It can be understood that the grounding device 100 can be applied to a mobile terminal, and the mobile terminal can be a mobile phone, a notebook computer or a desktop computer. safety performance.

The grounding elastic sheet 30 includes a fixing portion 31 and an elastic portion 32 that is fixedly connected to the fixing portion 31 . The fixing portion 31 is screwed to the electronic module 20 to receive static electricity from the electronic module 20 . The elastic portion 32 is elastically compressed between the electronic module 20 and the ground electrode 10 to elastically interfere with the ground electrode 10 and transmit static electricity, so that the ground elastic sheet 30 is firmly fixed to the electronic module 20 and the ground electrode 10 . between the ground electrodes 10 , and transfer the static electricity of the electronic module 20 to the ground electrode 10 to eliminate static electricity, thereby improving the stability of the grounding device 100 and improving the safety performance.

In this embodiment, the ground electrode 10 is a metal plate, and the ground electrode 10 may be applied to a circuit board of a mobile terminal, or may be applied to a battery cover of a mobile terminal. Specifically, the ground electrode 10 includes a first side 11 and a second side 12 that are opposite to each other. The first side 11 may be fixed on the casing of the mobile terminal, and the second side 12 is fixedly connected to the electronic module 20 . More specifically, the first side 11 may be adhered to the casing of the mobile terminal by adhesive, or may be formed on the circuit board by a hot pressing lamination process. The second side 12 is bonded to the electronic module 20 by adhesive. In other embodiments, the ground electrode 10 may also be connected to the electronic module 20 by snap-fit.

In this embodiment, the electronic module 20 may be a cable connector of a mobile terminal, or a smart card holder, or a chip holder. The electronic module 20 includes a metal casing (not shown) and electronic components fixed in the metal casing. The metal casing can be in the shape of a rectangular block, and the electronic components can be resistors, capacitors, or chips. The electronic module 20 is glued to the second side 12 and the electronic module 20, so that the electronic components in the electronic module 20 are isolated from the ground electrode 10, thereby ensuring the The electronic components and circuits in the electronic module 20 can work normally. The metal casing of the electronic module 20 enhances the structural performance of the electronic module 20 and increases the resistance to compression or deformation of the electronic module 20 . In other embodiments, the electronic module 20 may further include a plastic casing and a metal element disposed on the plastic casing, and the grounding elastic sheet 30 is connected to the metal element of the electronic module 20 .

In this embodiment, the grounding elastic sheet 30 is a metal piece. Preferably, the grounding elastic sheet 30 can be made of copper material. The ground elastic sheet 30 can generate elastic deformation by utilizing the ductility of metal. Specifically, when the electronic module 20 is fixed to the grounding electrode 10, the elastic portion 32 of the grounding elastic sheet 30 is compressed between the electronic module 20 and the grounding electrode 10, so that the grounding The elastic portion 32 of the elastic sheet 30 is deformed, so that the elastic portion 32 has a reaction force to the ground electrode 10 , so that the elastic portion 32 tightly abuts on the ground electrode 10 , and then the electronic module When there is a gap between the grounding electrode 10 and the grounding electrode 10 , the elastic portion 32 is still in contact with the grounding electrode 10 , thereby increasing the grounding performance of the grounding device 100 and improving the safety. At the same time, the fixing portion 31 is screwed on the electronic module 20 , so as to increase the stress effect of the grounding elastic sheet 30 on the electronic module 20 , so that the grounding elastic sheet 30 and the electronic module 20 are in contact with each other. The structure is firmer, preventing the electronic module 20 from being separated from the electronic module 20, so that the grounding spring 30 can always conduct the electrostatic interference of the electronic module 20 to the grounding electrode 10, thereby eliminating the need for Static interference. In other embodiments, the grounding elastic sheet 20 may also be made of a steel sheet material.

Further, the electronic module 20 includes a bottom end 21 fixedly connected to the ground electrode 10 , the bottom end 21 is provided with a first receiving cavity 22 with an opening facing the ground electrode 10 , and the first receiving cavity 22 The elastic portion 32 is accommodated.

In this embodiment, the electronic module 20 is in the shape of a rectangular block, and the end surface of the bottom end 21 of the electronic module 20 defines the first receiving cavity 22 , and the first receiving cavity 22 is used to receive the elastic portion 32 , so that the end face of the bottom end 21 of the electronic module 20 can be firmly fixed on the grounding electrode 10 , so that the electronic module 20 can protect the elastic portion 32 of the grounding elastic sheet 30 , thereby preventing the grounding The elastic portion 32 of the elastic sheet 30 is separated from the ground electrode 10 . Specifically, the end surface of the bottom end 21 is adhered to the second side 12 by adhesive, so that the elastic portion 32 is compressed to the first receiving cavity 22 and the second side 12 of the ground electrode 10 . Therefore, the elastic portion 32 is elastically deformed, and always abuts on the ground electrode 10 , so as to prevent the ground elastic piece 30 from being separated from the ground electrode 10 when the grounding device 100 shakes. In other embodiments, the electronic module 20 may also be cylindrical or plate-shaped.

Further, the electronic module 20 further includes a side wall 23 integrated with the bottom end 21 . There are two accommodating cavities 24 , and the second accommodating cavity 24 is screwed to the fixing portion 31 .

In this embodiment, the side wall 23 is the outer side wall of the metal casing of the electronic module 20 , and the side wall 23 is connected with the bottom end 21 , so that the second receiving space on the side wall 23 is The cavity 24 is adjacent to the bottom end 21 and communicates with the first receiving cavity 22 . The opening of the second accommodating cavity 24 is oriented parallel to the grounding electrode 10 , the bottom end face of the second accommodating cavity 24 is provided with a threaded hole 241 , and a screw 242 is locked in the threaded hole 241 . 31 Corresponding to the threaded hole 241 , a screw hole 31 a is formed, so that the screw 242 passes through the screw hole 31 a and is locked to the threaded hole 241 , so that the fixing portion 31 is fixed to the second receiving cavity 24 . The fixing portion 31 is locked to the second accommodating cavity 24 of the side wall 23 , so as to facilitate the installation of the grounding elastic sheet 30 from the side wall 23 of the electronic module 20 , saving labor, and utilizing the grounding elastic sheet 30 It is accommodated in the first accommodating cavity 22 and the second accommodating cavity 24, so as to avoid wasting the use space of the grounding elastic sheet 30, thereby saving the usable space of the grounding device 100, and reducing the volume of the grounding device 100. Therefore, the volume of the mobile terminal using the grounding device 100 can be reduced, thereby improving the use performance of the mobile terminal. In other embodiments, the number of the screw holes 241 and the screw holes 31 a may also be multiple, so as to further enhance the stability of the fixing portion 31 and the electronic module 20 .

Further, a first positioning portion 221 is provided at the bottom end of the first accommodating cavity 22 , and the grounding elastic sheet 30 further includes a second positioning portion 33 fixed between the elastic portion 32 and the fixing portion 31 . The second positioning portion 33 is accommodated in the first receiving cavity 22 and cooperates with the first positioning portion 221 .

In this embodiment, the first positioning portion 221 is a positioning column, and the first positioning portion 221 is integrated with the bottom end of the first receiving cavity 22 . The second positioning portion 33 is a positioning hole, and the second positioning portion 33 is integrally provided between the fixing portion 31 and the elastic portion 32 . When the elastic portion 32 is accommodated in the first accommodating cavity 22 , the second positioning portion 33 cooperates with the first positioning portion 221 , so that the elastic portion 32 is positioned in the first accommodating cavity 22 so as to prevent the elastic portion 32 from shaking in the first receiving cavity 22 . In other embodiments, the first positioning portion 221 may also be a positioning hole, and the second positioning portion 33 may also be a positioning column.

Further, the elastic portion 32 includes a support end 321 that is fixedly connected to the fixing portion 31 and a contact end 322 disposed opposite to the support end 321 . The contact end 322 is provided with an arc-shaped hook 322 a. The bottom end of the cavity 22 is further provided with a groove 222 for accommodating the curved hook 322a.

In this embodiment, the supporting end 321 is integrated with the fixing portion 31 , so that the supporting end 321 increases the supporting force for the abutting end 322 , and the abutting end 322 is disposed away from the supporting end 321 , so that the The abutting end 322 can generate an elastic force, the abutting end 322 abuts against the ground electrode 10 , and is compressed in the second receiving cavity 22 . When the abutting end 322 abuts against the second side 12 of the ground electrode 10 , the arc surface of the arc-shaped hook 322 a abuts against the second side 12 , thereby preventing the abutting end 322 from piercing the ground electrode 10 , thereby improving the service life of the grounding device 100 . In other embodiments, the interference end 322 may also be hemispherical, so as to reduce the damage of the interference end 322 to the ground electrode 10 .

Further, the present invention also provides a mobile terminal (not shown), the mobile terminal includes a casing (not shown) and the grounding device 100 . The ground electrode 10 is fixed inside the casing. The mobile terminal further includes a circuit board (not shown), the circuit board is fixed inside the casing, the ground electrode 10 is arranged on the circuit board, and the electronic module 20 can be connected device, or antenna, or memory. In other embodiments, the housing includes a front cover (not shown) and a rear cover (not shown) that is closed to the front cover, the ground electrode 10 , the electronic module 20 and the ground spring 30 are located between the front cover and the back cover, and the ground electrode 10 is arranged on the back cover; the back cover can be a battery cover of a mobile terminal, and the front cover can be a display screen of a mobile terminal cover plate.

In the grounding device and the mobile terminal of the present invention, the grounding elastic sheet includes a fixing portion and an elastic portion that is fixedly connected to the fixing portion, and the fixing portion is screwed to the electronic module to receive static electricity from the electronic module. , the elastic part is elastically compressed between the electronic module and the ground electrode, so as to elastically interfere with the ground electrode and transfer static electricity, so that the ground elastic sheet is stabilized between the electronic module and the ground electrode , and transfer the static electricity of the electronic module to the grounding electrode to eliminate static electricity, so that the grounding device can improve the stability and improve the safety performance.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made, and these improvements and modifications may also be regarded as It is the protection scope of the present invention.

Claims (8)

1. The grounding device is characterized by comprising a grounding electrode, an electronic module and a grounding elastic sheet, wherein the grounding electrode comprises a first side and a second side which are arranged in a back-to-back mode, the first side is used for being fixed on a shell of a mobile terminal, the electronic module is fixed on the second side of the grounding electrode, the grounding elastic sheet comprises a fixing part and an elastic part fixedly connected with the fixing part, the fixing part is fixed on the electronic module so that the electronic module is in electrostatic grounding, and the elastic part is elastically compressed between the electronic module and the grounding electrode so as to elastically abut against the grounding electrode and transfer static electricity; the electronic module comprises a bottom end fixedly connected with the grounding electrode, a first accommodating cavity with an opening facing the grounding electrode is formed in the bottom end, and the elastic part is elastically connected between the bottom surface of the first accommodating cavity and the grounding electrode; the electronic module further comprises a side wall integrated with the bottom end, a second accommodating cavity penetrating through the first accommodating cavity is formed in the side wall, and the fixing portion is fixed in the second accommodating cavity.

2. The grounding device of claim 1, wherein a first positioning portion is disposed at a bottom end of the first receiving cavity, the grounding spring further includes a second positioning portion fixed between the elastic portion and the fixing portion, and the second positioning portion is received in the first receiving cavity and engaged with the first positioning portion.

3. The grounding device as claimed in claim 1, wherein the elastic portion includes a supporting end fixedly connected to the fixing portion and a contact end disposed opposite to the supporting end, the contact end is provided with an arc-shaped hook, and a bottom end of the first receiving cavity is further provided with a groove for receiving the arc-shaped hook.

4. The grounding device of claim 1, wherein the electronic module comprises a metal housing and an electronic component secured within the metal housing.

5. The grounding device of claim 1, wherein the grounding electrode is a sheet metal member.

6. A mobile terminal is characterized by comprising a shell, a grounding electrode, an electronic module and a grounding elastic sheet, wherein the grounding electrode is fixed on the inner side of the shell, the electronic module is fixed on the grounding electrode, the grounding elastic sheet comprises a fixing part and an elastic part fixedly connected with the fixing part, the fixing part is connected with the electronic module through a screw so as to receive static electricity of the electronic module, and the elastic part is elastically compressed between the electronic module and the grounding electrode so as to elastically abut against the grounding electrode and transfer the static electricity; the electronic module comprises a bottom end fixedly connected with the grounding electrode, a first accommodating cavity with an opening facing the grounding electrode is formed in the bottom end, and the elastic part is elastically connected between the bottom surface of the first accommodating cavity and the grounding electrode; the electronic module further comprises a side wall integrated with the bottom end, a second accommodating cavity penetrating through the first accommodating cavity is formed in the side wall, and the fixing portion is fixed in the second accommodating cavity.

7. The mobile terminal of claim 6, further comprising a circuit board fixed inside the housing, wherein the ground electrode is disposed on the circuit board.

8. The mobile terminal of claim 6, wherein the housing comprises a front cover and a rear cover covering the front cover, the ground electrode, the electronic module and the ground spring are disposed between the front cover and the rear cover, and the ground electrode is disposed on the rear cover.

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