CN207251692U - A kind of mobile terminal - Google Patents

Abstract

The utility model provides a mobile terminal, comprising: a device to be grounded, the device to be grounded includes a cover body, the side wall of the cover body is made of metal; a main board, on which the cover body is installed The first notch, the side wall of the first notch is provided with a copper exposed area for grounding; at least one metal shrapnel is interposed between the side wall of the cover and the side wall of the first notch, And connect the side wall of the cover body and the exposed copper area, avoid the grounding structure from occupying too much structural space, and improve the reliability of the grounding performance of the grounding point.

Description

a mobile terminal

technical field

The utility model relates to a terminal circuit grounding structure, in particular to a mobile terminal.

Background technique

With the development of ultra-thin, full metallization, extreme appearance and high performance of smart phones, mobile terminals such as mobile phones have higher and higher requirements for grounding of internal devices. If the internal devices are not well grounded, other components and The performance of the overall terminal is affected.

At present, the grounding of internal devices in smart phones is usually achieved by pasting conductive auxiliary materials such as conductive double-sided adhesive tape, conductive copper foil, conductive cloth or conductive foam. The conductive auxiliary material is generally pasted on the bottom of the device to be grounded, and the sealing foam provided on the top of the device to be grounded is pre-pressed, and the conductive auxiliary material between the bottom of the device to be grounded and the terminal metal shell is pressed tightly by the pre-pressure amount, and the conductive material is electrically conductive. The auxiliary material connects the bottom of the device to be grounded and the metal shell to realize the grounding of the device. This kind of grounding structure is especially common on the terminal camera.

In this grounding structure and grounding method, since the bottom of the camera is grounded, it is impossible to further reduce the overall thickness of the camera of the whole machine, and because the grounding is realized through a large area of conductive auxiliary materials, there is a certain flatness, and the main board There is a step difference between the exposed copper area and the surrounding green oil area, which will cause the conductive material to not be in good contact with the exposed copper area. The conductive auxiliary material area point participating in the grounding may be any area point of the conductive auxiliary material, which will affect the electrical conduction. Consistency, and some cannot even be grounded because they are not in contact. Furthermore, due to conductive auxiliary materials such as conductive cloth, conductive double-sided tape, etc., the conductivity is different in different conductive areas, so that there is an imbalance in the conductivity, and even a certain area may be non-conductive. If only this non-conductive or poorly conductive area is involved in contact, then this conductive auxiliary material will not be able to ground the exposed copper area of the main board under the bottom of the camera and the metal shell; and if it uses conductive double-sided adhesive tape For conductive auxiliary materials, when disassembled and reinstalled, the viscosity of the conductive double-sided adhesive will deteriorate, which will lead to poor electrical conductivity, thereby affecting the grounding of the camera and the metal case, and poor maintainability; if the conductive double-sided adhesive is used to conduct electricity The auxiliary materials will also affect the flexibility of the centering adjustment of the camera's appearance. The double-sided tape will stick the camera to the shell. When the camera assembly is not centered, it will affect the centering between the camera and the appearance lens.

Utility model content

The embodiment of the utility model provides a mobile terminal to solve the problems of inconsistency, imbalance and poor conductivity in the electrical conductivity of the device grounding mode in the mobile terminal in the prior art.

In order to solve the above technical problems, the utility model embodiment adopts the following technical solutions:

An embodiment of the utility model provides a mobile terminal, including:

The device to be grounded, the device to be grounded includes a cover, and the side wall of the cover is made of metal;

A main board, the main board is provided with a first notch for installing the cover body, and the side wall of the first notch is provided with a copper exposed area for grounding;

At least one metal elastic piece is interposed between the side wall of the cover and the side wall of the first notch, and connects the side wall of the cover and the exposed copper area.

One or more embodiments of the present utility model have the following beneficial effects:

In this structure, the device to be grounded is arranged in the gap on the main board, the device to be grounded includes a cover body, the metal side wall of the cover body becomes the grounding window of the device to be grounded, and the gap between the side wall of the cover body and the side wall of the gap At least one metal shrapnel is interposed, so that the metal side wall of the cover and the exposed copper area set on the side wall of the gap form a conductive path with each other, so that the device to be grounded can be grounded, and the grounding structure can avoid occupying too much structural space , improve the reliability of the grounding performance of the grounding point, improve the conductivity of the device, and the overall simplicity and reliability reduce the process steps of terminal assembly and improve the convenience of maintenance.

Description of drawings

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. . Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Fig. 1 shows the structural representation of mobile terminal in the utility model embodiment;

Fig. 2 shows the cooperative structural diagram of the device to be grounded and the metal shrapnel in the embodiment of the utility model;

Fig. 3 shows the structure enlargement diagram of metal shrapnel in the utility model embodiment;

Fig. 4 shows a schematic diagram of the second notch on the main board in the embodiment of the utility model.

Reference signs: in the figure:

1-device to be grounded, 2-cover body, 3-main board, 4-metal shrapnel, 5-exposed copper area, 6-second gap, 7-connecting wall, 8-elastic arm.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. . Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The embodiment of the utility model discloses a mobile terminal, as shown in FIG. 1 and FIG. 2 , comprising: a device to be grounded 1 , a main board 3 and at least one metal shrapnel 4 .

Wherein, the device 1 to be grounded includes a cover body 2, the side wall of the cover body 2 is made of metal material; the main board 3 is provided with a first gap for installing the cover body 2, and the side wall of the first gap is provided with a Grounded exposed copper area 5 ; at least one metal elastic piece 4 is interposed between the side wall of the cover 2 and the side wall of the first notch, and connects the side wall of the cover 2 and the exposed copper area 5 .

Specifically, the main board 3 is a complete main board in a mobile terminal, the main board 3 is specifically a PCB (Printed Circuit Board, printed circuit board), the device 1 to be grounded is arranged in a first gap on the main board 3, and the device to be grounded 1 includes a cover body 2, the metal side wall of the cover body 2 becomes the grounding window of the device 1 to be grounded, at least one metal shrapnel 4 is sandwiched between the side wall of the cover body 2 and the side wall of the first gap, so that the cover body The metal side wall of the body 2 and the exposed copper area 5 provided on the side wall of the first notch form a conductive path with each other, so that the device 1 to be grounded is grounded, wherein the exposed copper area 5 is set on the side wall of the main board 3 as a grounding area , the metal side wall of the cover body 2 and the exposed copper area 5 can be directly connected through the shrapnel to realize grounding, avoiding the grounding structure from occupying too much structural space, and the large preloading amount of the shrapnel can be used to improve the grounding contact and improve the connection. The reliability of the grounding performance of the site can reduce the impact of unreliable and inconsistent camera grounding on the performance of the antenna of the whole machine, and ensure the consistency of the grounding point position, reduce the impact of the inconsistency of the grounding point position on the whole machine, and improve the conductivity of the device .

As a preferred embodiment, the device to be grounded 1 is a camera module, and the cover 2 is a motor cover in the camera module. Realize the ground connection of the camera module in the mobile terminal.

The grounding structure is simple and reliable as a whole, which solves the problem that the camera cannot be moved and the centering of the camera cannot be adjusted due to the grounding method of conductive double-sided adhesive bonding, reduces the process of terminal assembly, and simplifies the assembly of mobile phone terminal factories. And maintenance process technology, improve efficiency, improve maintenance convenience, and remove the conductive auxiliary material at the bottom of the camera in this structure, save thickness space, make a contribution of at least 0.05mm to the height of the camera protrusion, and make the camera short Save space.

Wherein, the device 1 to be grounded is not limited to a camera module in a mobile terminal, and the mobile terminal is not limited to electronic devices such as mobile phones and tablet computers. The grounding structure in the mobile terminal can be applied to various electronic products with cameras, and the device 1 to be grounded can also be applied to the grounding of other devices with metal covers and the main board 3 in various electronic products.

Further, preferably, as shown in FIG. 4 , the side wall of the first notch is provided with a second notch 6 passing through the upper surface and the lower surface of the main board; the second notch 6 includes a side wall adjacent to the first notch. The first side wall and the second side wall, and the third side wall connected with the first side wall and the second side wall, the copper exposed region 5 is formed on the third side wall.

The second notch 6 is provided on the side wall of the first notch, so that when it is connected with the metal dome 4, the dome can be accommodated, reducing the lateral space occupied by the sandwiched dome, and increasing the firmness of the dome structure.

Specifically, the second notch 6 can be set to have a width greater than that of the metal dome 4 in a first direction; the first direction is the circumferential direction of the sidewall of the first notch. Among them, the exposed copper side wall can be set on the side wall of the first notch to sink 0.2mm, that is, the depth of the second notch 6 is 0.2mm, which can better accommodate the shrapnel and cooperate with the shrapnel to realize the device to be grounded. Good grounding effect.

As a preferred embodiment, the number of the second notches 6 is the same as the number of the metal domes 4 , and one of the metal domes 4 is correspondingly connected to the copper exposed region 5 in one of the second notches 6 .

The one-to-one corresponding installation and cooperation between the shrapnel and the second notch 6 is realized to further ensure the reliability of grounding.

Preferably, when there are two metal elastic pieces 4 , the two metal elastic pieces 4 are oppositely sandwiched between the side wall of the cover body 2 and the side wall of the first notch.

The two metal shrapnels 4 are arranged on opposite sides of the device to be grounded, one on each side, which facilitates the symmetry of the force during the clamping process of the shrapnel, better realizes the elastic fit of the shrapnel, ensures the connection effect, and ensures the reliability of the grounding .

As a preferred implementation manner, the device to be grounded further includes: a device circuit board, and the device circuit board is electrically connected to the side wall of the cover 2 .

An electrical connection is established between the device circuit board and the metal side wall of the cover body 2, while realizing the grounding of the cover body 2, the ground connection of the device circuit board is realized, the grounding path of the device circuit board is changed, and the safety of each component in the device to be grounded is improved. Good grounding performance to ensure the grounding effect.

As a preferred embodiment, as shown in FIG. 3 , the metal dome 4 includes: two symmetrically arranged connecting walls 7, fixedly connected to the side walls of the cover body 2; elastic arms 8, one end connected to the two Between the connecting walls 7, the other end is bent and upturned.

One end of the two symmetrically arranged connecting walls 7 is connected to each other, and the two are symmetrically arranged to realize a fixed connection with the side wall of the cover body 2. One end of the elastic arm 8 is fixedly connected between the two connecting walls 7, and the elastic piece Fixed on the side wall of the cover body 2, the position of the grounding point becomes very fixed, and the other end tilts up to realize elastic deformation when sandwiched between the side wall of the cover body 2 and the side wall of the first notch, so that the structure Strong, can improve the grounding contact through the large preload of the shrapnel.

Preferably, the elastic arm 8 includes: an elastic arm; a connecting foot, which is bent and connected to the first end of the elastic arm, and the connecting foot is connected and arranged between the two connecting walls 7; At the second end of the spring arm, the head of the spring is connected to the copper-exposed area 5 in conflicting connection.

The elastic arm 8 forms a convex part of the elastic piece, which realizes contact with the exposed copper area 5 on the side wall of the main board 3 , thereby realizing the grounding of the device to be grounded and the main board 3 .

Preferably, wherein, the connection between the spring clip head and the spring arm is in the form of a circular arc transition connection. The connection between the spring clip head and the spring arm (the length area of about 0.7 mm) is designed as a relatively flat arc shape, so as to ensure that the spring clip can better resist and connect to the exposed copper area on the side wall of the main board 3 .

Wherein, preferably, the two connecting walls 7 and the elastic arm 8 are integrally formed to enhance the overall structural strength of the elastic piece. The side walls of the two connecting walls 7 and the cover body 2 are fixedly welded. Specifically, the two connecting walls 7 are welded to the side walls of the cover body 2 through 1 to 4 welding spots respectively, and the side walls of the lifting shrapnel and the cover body 2 are lifted. The strength of the connection between walls.

Having described preferred embodiments of embodiments of the present invention, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be interpreted to cover the preferred embodiment and all changes and modifications that fall within the scope of the embodiments of the present invention.

Finally, it should be noted that in the embodiments of the present utility model, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or end-equipment. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

What has been described above is a preferred embodiment of the present utility model, and it should be pointed out that for those skilled in the art, some improvements and modifications can also be made without departing from the principles described in the present utility model. Within the protection scope of the present utility model.

Claims (10)

1. A kind of 1. mobile terminal, it is characterised in that including：

   Treat ground devices, described to treat that ground devices include cover body, the side wall of the cover body is metal material；

   Mainboard, offers the first notch for installing the cover body on the mainboard, use is provided with the side wall of first notch In the Lu Tong areas of ground connection；

   At least one metal clips, is located between the side wall of the cover body and the side wall of first notch, and described in connection The side wall of cover body and the Lu Tong areas.
2. 2. mobile terminal according to claim 1, it is characterised in that

   The upper surface of the mainboard and the second notch of lower surface are provided through on the side wall of first notch；

   Second notch includes the first side wall and second sidewall adjacent with the side wall of first notch, and with it is described The first side wall and the 3rd side wall of second sidewall connection, formed with the Lu Tong areas on the 3rd side wall.
3. 3. mobile terminal according to claim 2, it is characterised in that

   The quantity of second notch is identical with the quantity of the metal clips, a metal clips and one described second Notch Zhong Lutong areas correspond to connection.
4. 4. mobile terminal according to claim 1, it is characterised in that

   When the metal clips is two, two metal clips are relatively located in the side wall of the cover body and described the Between the side wall of one notch.
5. 5. mobile terminal according to claim 1, it is characterised in that described to treat that ground devices further include：

   Device circuitry plate, the device circuitry plate are electrically connected with the side wall of the cover body.
6. 6. mobile terminal according to claim 1, it is characterised in that the metal clips includes：

   Symmetrically arranged two connection walls, are fixedly connected with the side wall of the cover body；

   Elasticity arm, one end are connected between two connection walls, and other end bending tilts.
7. 7. mobile terminal according to claim 6, it is characterised in that the elasticity arm includes：

   Elastic arm；

   Connecting pin, bends with the first end of the elastic arm and connects, the connecting pin is connected between two connection walls；

   Shrapnel head, is arranged at the second end of the elastic arm, and the shrapnel head is contradicted with the Lu Tong areas and connected.
8. 8. mobile terminal according to claim 7, it is characterised in that the junction of the shrapnel head and the elastic arm is in circle Arcuation transition connects.
9. 9. mobile terminal according to claim 6, it is characterised in that two connection walls and the elasticity arm one into Type.
10. 10. mobile terminal according to claim 1, it is characterised in that

    Described to treat that ground devices are camera module, the cover body is the motor cover in the camera module.