CN218182473U - Sound cavity and antenna grounding structure assembly and mobile terminal - Google Patents

Abstract

The utility model relates to a sound chamber and antenna ground structure subassembly and mobile terminal, the structure subassembly includes the loudspeaker sound chamber shell that is used for setting up on the shell structure of mobile terminal and sets up the antenna ground structure on loudspeaker sound chamber shell, the antenna ground structure includes connecting piece and elastic contact piece, the connecting piece sets up on loudspeaker sound chamber shell, a part of connecting piece extends to one side of loudspeaker sound chamber shell, the elastic contact piece sets up on a part of connecting piece and extends towards the direction of keeping away from loudspeaker sound chamber shell, in order to be used for contacting with the antenna; the other part of the connecting piece extends to the position, used for being contacted with the shell structure, on the other side of the loudspeaker sound cavity shell, and a plurality of extending convex points are arranged on the other part of the connecting piece. Through the integrated design of the antenna grounding structure and the sound cavity, the antenna can cross the area where the sound cavity is located to realize grounding with the shell, no additional space is occupied, the arrangement of the antenna feed point is realized, and the use reliability of other structures is also ensured.

Description

Sound cavity and antenna grounding structure assembly and mobile terminal

Technical Field

The utility model relates to a mobile terminal technical field especially relates to a sound chamber and antenna ground structure subassembly and mobile terminal.

Background

At present, when an antenna inside a mobile terminal device on the market is designed to be grounded, the antenna grounding stability and reliability are generally guaranteed through a contact elastic sheet arranged between the antenna and a shell, and because the antenna is arranged on one side of a sound cavity, a main board or a middle frame used for grounding the antenna is arranged on the other side of the sound cavity, the sound cavity needs to be provided with a vacant area for arranging the contact elastic sheet between corresponding connection points of the antenna and the main board or the middle frame.

However, as the mobile device gradually moves toward diversification, the number of feed points of the antenna increases correspondingly, which results in a corresponding increase in the number of the elastic pieces, and thus the space required to be provided for the elastic pieces increases correspondingly. The space occupied by the antenna is increased, so that the space area of other structures inside the device, such as a BOX sound cavity area, which are also located between the antenna and the main board or the middle frame, needs to be reduced to provide an avoidance space, the performance of other structures is affected, and the performance of the antenna and other structures cannot be compatible.

SUMMERY OF THE UTILITY MODEL

To solve the technical problem or at least partially solve the technical problem, the present disclosure provides an acoustic cavity and antenna grounding structure assembly and a mobile terminal.

In a first aspect, the present disclosure provides a sound cavity and antenna grounding structure assembly, which includes a horn sound cavity housing for connecting with a housing of a mobile terminal, and an antenna grounding structure disposed on the horn sound cavity housing;

the antenna grounding structure comprises a connecting piece and an elastic contact piece, the connecting piece comprises an upper connecting part and a lower connecting part, the upper connecting part is positioned on one side of the horn sound cavity shell, and the elastic contact piece is arranged on the upper connecting part and extends towards the direction far away from the horn sound cavity shell so as to be in contact with an antenna positioned on one side of the horn sound cavity shell; the lower connecting portion is located the opposite side of loudspeaker sound chamber shell be used for with the position department of casing contact, be provided with a plurality of bumps that extend on the lower connecting portion, extend the bump be used for with the casing contact.

Optionally, the connecting piece still includes side connecting portion, it establishes to go up connecting portion subsides one side of loudspeaker sound chamber shell, lower connecting portion subsides are established be used for of the opposite side of loudspeaker sound chamber shell with the position department of casing contact, side connecting portion subsides are established the limit portion of loudspeaker sound chamber shell, and the both ends of side connecting portion are connected to respectively go up connecting portion with lower connecting portion.

Optionally, the upper connecting portion, the side connecting portion and the lower connecting portion are integrally formed.

Optionally, positioning through holes are formed in the surface of the loudspeaker sound cavity shell, connecting holes are formed in the positions, corresponding to the positioning through holes, of the surface of the connecting piece, and the connecting piece is connected with the loudspeaker sound cavity shell through fasteners penetrating through the positioning through holes and the connecting holes.

Optionally, the surface of loudspeaker sound chamber shell has at least one spacing post, correspond on the connecting piece the position department of spacing post is provided with dodges the groove, the connecting piece passes through spacing post is located dodge the inslot for loudspeaker sound chamber shell is spacing.

Optionally, the surface of the loudspeaker sound cavity shell is provided with at least one limiting hole, and the limiting column is connected to the limiting hole in an interference manner through a hot-melting nut.

Optionally, the elastic contact piece includes extension and contact site, the extension is the elasticity material, the extension is certainly border department orientation of connecting piece is kept away from the direction of loudspeaker sound chamber shell is buckled, the contact site sets up keeping away from of extension loudspeaker sound chamber shell's one end department for with the antenna contact.

Optionally, a side of the contact portion facing the antenna is an arc-shaped surface.

Optionally, the extension part and the contact part are integrally formed;

and/or the connecting piece and the extension part are integrally formed.

In a second aspect, the present disclosure also provides a mobile terminal including the acoustic cavity and antenna ground structure assembly as described above.

Compared with the prior art, the technical scheme provided by the disclosure has the following advantages:

the sound cavity and antenna grounding structure assembly and the mobile terminal provided by the disclosure have the advantages that one part of the connecting piece of the antenna grounding structure extends to one side of the loudspeaker sound cavity shell, the elastic contact piece is arranged at the position to be contacted with the antenna, meanwhile, the other part of the connecting piece of the antenna grounding structure extends to the position, contacted with the shell structure, of the loudspeaker sound cavity shell, and the connecting piece can be electrically contacted with the shell through the extending salient points arranged at the position, so that the antenna and the shell are electrically connected through the antenna grounding structure, and the grounding of the antenna is realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

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

Fig. 1 is a schematic structural diagram of an assembly of an acoustic cavity and an antenna ground structure according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another view angle of the acoustic cavity and antenna ground structure assembly according to the embodiment of the present disclosure;

fig. 3 is a schematic structural view illustrating a grounding structural assembly of the sound cavity and the antenna in contact with the antenna according to the embodiment of the present disclosure;

fig. 4 is a schematic partial structural view of a mobile terminal provided with an acoustic cavity and an antenna grounding structural assembly according to an embodiment of the present disclosure;

fig. 5 is an exploded view of a partial structure of a mobile terminal with an assembly of an acoustic cavity and an antenna ground structure according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of an antenna grounding structure of the sound cavity and antenna grounding structure assembly according to the embodiment of the present disclosure.

Wherein, 1, a loudspeaker sound cavity shell; 11. a limiting column; 2. an antenna ground structure; 21. a connecting member; 211. an upper connecting portion; 212. a side connection portion; 213. a lower connecting portion; 22. an elastic contact member; 221. an extension portion; 222. a contact portion; 23. extending the bumps; 3. a middle frame; 4. an antenna; 5. a rear housing; 6. a fastener.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

At present, when an antenna inside a mobile terminal device on the market is designed to be grounded, a communicating area is generally provided between the antenna inside the device and a main board or a shell, then an elastic sheet is electrically welded on the main board or the shell, and the antenna is in contact with the elastic sheet to ensure the stability and reliability of the grounding of the antenna.

However, as mobile devices gradually move toward diversification, their antenna area and feed point need to be increased accordingly, and accordingly, more connected areas need to be provided for the antenna feed point. However, the antenna region may overlap with a spatial region of other structures inside the device, such as a BOX cavity region, so that the BOX cavity region needs to be reduced to provide a back-off space, and the performance of structures such as a cavity is affected due to the reduced space, which makes it difficult to achieve performance compatibility between the antenna and other structures.

To the above-mentioned defect, this embodiment provides a sound chamber and antenna ground structure subassembly, through to the improvement to realizing antenna ground structure and sound chamber structure, has realized not influencing the effect of the specification size of sound chamber structure when guaranteeing antenna ground connection. In particular, the structural arrangement of the sound cavity and the antenna grounding structure assembly is described in the following embodiments.

As shown in fig. 1 to 6, the present embodiment provides a sound cavity and antenna grounding structure assembly, which includes a horn sound cavity housing 1 and an antenna grounding structure 2, where the horn sound cavity housing 1 is configured to be disposed on a housing structure of a mobile terminal, and the antenna grounding structure 2 is disposed on the horn sound cavity housing 1.

The loudspeaker sound cavity housing 1 is generally disposed on a housing structure of the mobile terminal, and is specifically connected to a middle frame 3 of the housing structure. When the antenna grounding structure 2 is arranged on the horn sound cavity shell 1, the antenna grounding structure is arranged corresponding to the position of an antenna feed point on the mobile terminal. The antenna grounding structure 2 needs to realize the grounding function of the antenna 4, and therefore, the material thereof is metal, steel is selected in this embodiment, and of course, other metal materials may be selected in other embodiments.

The antenna grounding structure 2 comprises a connecting piece 21 and an elastic contact piece 22, wherein the connecting piece 21 is arranged on the horn sound cavity shell 1, a part of the connecting piece 21 extends to one side of the horn sound cavity shell 1, and the elastic contact piece 22 is arranged on a part of the connecting piece 21 and extends towards the direction far away from the horn sound cavity shell 1 so as to be in contact with the antenna 4 on one side of the horn sound cavity shell 1; the other part of the connecting piece 21 extends to the position of the other side of the loudspeaker sound cavity shell 1 for contacting with the shell structure, a plurality of extending convex points 23 are arranged on the other part of the connecting piece 21, and the extending convex points 23 protrude towards the direction far away from the surface of the connecting piece 21 so as to contact with the shell structure.

In specific implementation, the connecting piece 21 is correspondingly disposed at a position corresponding to the antenna 4 and the housing structure, and a portion of the connecting piece 21 extends to a side of the horn sound cavity housing 1 facing the antenna 4, so as to facilitate the electrical contact between the elastic contact piece 22 disposed on the connecting piece 21 and the antenna 4. The other part of the connecting piece 21 extends to the position, on the other side of the horn sound cavity shell 1, for contacting with the shell structure, so as to ensure the contact with the shell structure, and therefore the antenna 4 is firstly conducted with the connecting piece 21 through the elastic contact piece 22, then the connecting piece 21 is conducted with the shell through the extending salient point 23, and finally the electrical connection of the antenna 4 and the shell is realized, and the grounding of the antenna 4 is realized.

When setting up connecting piece 21, can make connecting piece 21 paste and establish on loudspeaker sound chamber shell 1's surface, also can make connecting piece 21 wear to establish on loudspeaker sound chamber shell 1, as long as can realize connecting piece 21's setting with the help of loudspeaker sound chamber shell 1, make its electrical contact of guaranteeing the both sides part, guarantee simultaneously not influence the holistic structure occupation space of sound chamber structure can.

Through the sound cavity and antenna grounding structure assembly provided by the embodiment, a part of the connecting piece 21 of the antenna grounding structure 2 extends to one side of the horn sound cavity shell 1, and the elastic contact piece 22 is arranged at the position for contacting with the antenna 4, meanwhile, the other part of the connecting piece 21 of the antenna grounding structure 2 extends to the position of the horn sound cavity shell 1 contacting with the shell structure, through the extension convex point 23 arranged at the position, the connecting piece 21 can be electrically contacted with the shell, so that the antenna 4 is electrically connected with the shell through the antenna grounding structure 2, the grounding of the antenna 4 is realized, namely, the antenna grounding structure 2 and the sound cavity are designed in an integrated mode, the antenna 4 can realize the grounding with the shell by utilizing the region where the antenna grounding structure 2 on the sound cavity crosses the sound cavity, the sound cavity structure is not needed, an avoiding space is provided for the antenna 4, the main board and the shell positioned at two sides of the antenna 4, so that the main board and the shell are contacted with each other structures, the grounding structure does not affect the layout structure, the area of the sound cavity is not needed to be reduced, not only the randomness of the antenna feed point setting is realized, and the overall reliability of the mobile terminal is also ensured, and the overall design is improved.

For the above sound cavity and antenna grounding structure assembly, the embodiment further provides a mobile terminal, which includes the above sound cavity and antenna grounding structure assembly. The mobile terminal also comprises an equipment shell, the loudspeaker sound cavity shell 1 is specifically connected with a middle frame 3 of the equipment shell, and an antenna 4 can be arranged on a rear shell 5 part of the equipment shell.

When the mobile terminal is installed, specifically, the antenna grounding structure 2 is installed on the horn sound cavity shell 1, then the horn sound cavity shell 1 is assembled on the shell middle frame 3, the antenna 4 is attached to the inner wall of the rear shell 5 facing the sound cavity, and finally, the horn sound cavity shell is assembled up and down, the elastic contact piece 22 of the antenna grounding structure 2 is contacted with the antenna 4, and the extension salient point 23 on the connecting piece 21 of the antenna grounding structure 2 is contacted with the shell middle frame 3, so that the grounding of the antenna 4 is realized, and particularly, as shown in fig. 3-5.

In some embodiments, the connector 21 is provided at the edge of the horn sound chamber housing 1. Also, referring to fig. 6, the connection member 21 includes an upper connection portion 211, a side connection portion 212, and a lower connection portion 213, the upper connection portion 211 is attached to a side of the horn sound cavity housing 1 facing the antenna 4, and the elastic contact member 22 is connected to the upper connection portion 211; the lower connecting part 213 is attached to the other side of the horn sound cavity housing 1 facing the shell structure, and the grounding part is positioned on the lower connecting part 213; the side connection part 212 is attached to a side of the horn sound chamber housing 1, and both ends of the side connection part 212 are connected to the upper connection part 211 and the lower connection part 213, respectively. With connecting piece 21 setting in the edge of loudspeaker sound chamber shell 1, connecting piece 21 need not pass loudspeaker sound chamber shell 1, and is minimum to loudspeaker sound chamber shell 1's influence, goes up connecting portion 211 and lower connecting portion 213 and pastes mutually with the both sides of loudspeaker sound chamber shell 1 respectively and establishes, has guaranteed the abundant reliability of connection. The side connecting portion 212 is used for realizing integral installation of the whole connecting member 21 structure, so that the two directions can be ensured to be contacted simultaneously after the connecting member 21 is integrally installed.

In order to ensure the structural strength of the connecting member 21 and the connection reliability between the respective parts, in the present embodiment, the upper connecting portion 211, the side connecting portions 212, and the lower connecting portion 213 are provided as an integral molding. Moreover, the connecting piece 21 can be made of sheet metal integrally, and is produced by stamping, cutting and the like, and is bent when being installed, and then is clamped at the edge of the horn sound cavity shell 1.

Referring to fig. 6, the elastic contact 22 of the connection member 21 includes an extension portion 221 and a contact portion 222, the extension portion 221 is made of an elastic material, one end of the extension portion 221 is connected to the connection member 21, the other end of the extension portion 221 extends toward a direction away from the horn sound cavity housing 1, and the contact portion 222 is disposed at the other end of the extension portion 221 and is used for abutting against the antenna 4. The extension 221 is made of elastic material to absorb the excessive pressing distance after the elastic contact 22 contacts the antenna 4.

The contact portion 222 is an arc-shaped bent structure, and an arc-shaped outer side of the arc-shaped bent structure is used for contacting with the antenna 4. The contact portion 222 is provided in an arc shape and contacts the antenna 4 through the outside of the arc shape so that a small amount of relative movement of the contact portion 222 with respect to the antenna 4 during the press-fitting does not scratch the surface of the antenna 4.

In some embodiments, the extension portion 221 and the contact portion 222 may be integrally formed, and the connecting member 21 and the extension portion 221 may also be integrally formed, so as to ensure the overall structural strength of the connecting member 21 and facilitate the production.

When the connecting piece 21 is installed, at least one limiting column 11 can be arranged on the surface of the loudspeaker sound cavity shell 1, an avoiding groove is formed in the position, corresponding to the limiting column 11, on the connecting piece 21, and the connecting piece 21 is located in the avoiding groove through the limiting column 11 and is limited relative to the loudspeaker sound cavity shell 1. Avoid the cooperation of groove and spacing post 11, make connecting piece 21 can not produce for loudspeaker sound chamber shell 1 and slide, avoid influencing the contact effect with antenna 4 or casing.

In this embodiment, at least one limiting hole is formed in the surface of the horn sound cavity housing 1, and the limiting column 11 on the surface of the horn sound cavity housing 1 is formed by interference-connecting a hot-melt nut to the limiting hole. Of course, in other embodiments, the limiting effect can also be achieved by arranging the limiting protrusion on the surface of the horn sound cavity shell 1.

In order to ensure the connection tightness between the antenna grounding structure 2 and the horn sound cavity housing 1, the attaching effect of the connecting portion and the horn sound cavity housing 1 is better, and sufficient compression is ensured, in some embodiments, the surface of the horn sound cavity housing 1 is further provided with positioning through holes, connecting holes are formed in the positions of the surfaces of the connecting pieces 21 corresponding to the positioning through holes, and the connecting pieces 21 and the horn sound cavity housing 1 can be jointly penetrated through by the fasteners 6 and are connected with each other in the positioning through holes and the connecting holes. After connecting piece 21 sets up on loudspeaker sound chamber shell 1, screw up through fastener 6 and press and establish, can make between connecting piece 21 and the loudspeaker sound chamber shell 1 further guarantee to be connected reliably, simultaneously, the position department that corresponds positioning hole on mobile terminal's backshell 5 and center 3 all sets up the mounting hole, fastener 6 wears to establish simultaneously in the mounting hole, positioning hole, the connecting hole, thereby it is abundant that each contact point contact is in the assembling process, further guarantee the reliability of electrical contact, can specifically see that fig. 4 and fig. 5 are shown.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The previous description is only for the purpose of describing particular embodiments of the present disclosure, so as to enable those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The sound cavity and antenna grounding structure assembly is characterized by comprising a loudspeaker sound cavity shell (1) connected with a shell of a mobile terminal and an antenna grounding structure (2) arranged on the loudspeaker sound cavity shell (1);

the antenna grounding structure (2) comprises a connecting piece (21) and an elastic contact piece (22), the connecting piece (21) comprises an upper connecting part (211) and a lower connecting part (213), the upper connecting part (211) is positioned on one side of the horn sound cavity shell (1), and the elastic contact piece (22) is arranged on the upper connecting part (211) and extends towards the direction far away from the horn sound cavity shell (1) so as to be in contact with an antenna (4) positioned on one side of the horn sound cavity shell (1); lower connecting portion (213) be located the opposite side of loudspeaker sound chamber shell (1) be used for with the position department of casing contact, be provided with a plurality of extension bumps (23) on lower connecting portion (213), extend bump (23) be used for with the casing contact.

2. The sound cavity and antenna grounding structure assembly according to claim 1, wherein the connector (21) further comprises a side connector (212), the upper connector (211) is attached to one side of the horn sound cavity housing (1), the lower connector (213) is attached to the other side of the horn sound cavity housing (1) at a position for contacting with the housing, the side connector (212) is attached to an edge of the horn sound cavity housing (1), and two ends of the side connector (212) are respectively connected to the upper connector (211) and the lower connector (213).

3. The acoustic cavity and antenna ground structure assembly according to claim 2, wherein the upper connection portion (211), the side connection portion (212) and the lower connection portion (213) are integrally formed.

4. The sound cavity and antenna grounding structure assembly according to any one of claims 1-3, wherein a positioning through hole is opened on the horn sound cavity housing (1), a connecting hole is opened on the connecting piece (21) at a position corresponding to the positioning through hole, and the connecting piece (21) is connected with the horn sound cavity housing (1) through a fastener (6) inserted into the positioning through hole and the connecting hole.

5. The acoustic cavity and antenna grounding structure assembly according to any one of claims 1 to 3, wherein the surface of the horn acoustic cavity housing (1) has at least one limiting post (11), an avoiding groove is provided on the connecting piece (21) at a position corresponding to the limiting post (11), and the connecting piece (21) is located in the avoiding groove through the limiting post (11) and is limited relative to the horn acoustic cavity housing (1).

6. The sound cavity and antenna grounding structure assembly according to claim 5, wherein the surface of the horn sound cavity housing (1) has at least one limiting hole, and the limiting column (11) is formed by interference-penetrating a hot-melt nut through the limiting hole.

7. The sound cavity and antenna grounding structure assembly according to any one of claims 1-3, wherein the elastic contact member (22) includes an extension portion (221) and a contact portion (222), the extension portion (221) is made of an elastic material, the extension portion (221) is bent from an edge of the connecting member (21) toward a direction away from the horn sound cavity housing (1), and the contact portion (222) is disposed at an end of the extension portion (221) away from the horn sound cavity housing (1) for contacting with the antenna (4).

8. The acoustic chamber and antenna grounding structure assembly according to claim 7, characterized in that a side of the contact portion (222) facing the antenna (4) is an arc-shaped surface.

9. The acoustic cavity and antenna grounding structure assembly according to claim 7, wherein the extension portion (221) and the contact portion (222) are integrally formed;

and/or the connecting piece (21) and the extending part (221) are integrally formed.

10. A mobile terminal, characterized in that it comprises a sound cavity and antenna ground structure assembly according to any one of claims 1-9.

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