CN108650345B - Mobile terminal - Google Patents

Abstract

The application relates to a mobile terminal, comprising: a substrate, a speaker sound cavity box and a screen assembly, the substrate is provided with a through hole; the screen assembly is stacked on one side of the substrate; the speaker sound cavity box is arranged on the side of the substrate away from the screen assembly. The speaker sound cavity box covers the through hole, so that the through hole is located between the speaker sound cavity box and the screen assembly, and the speaker sound cavity box, the screen assembly and the base plate together form a sound cavity. The casing of the mobile terminal provided by the present application has a through hole, which can increase the volume of the sound cavity of the speaker.

Description

mobile terminal

technical field

The present invention relates to the field of communication technologies, and in particular, to a mobile terminal.

Background technique

Due to the needs of audio quality, the speaker needs a larger sound cavity. However, as the mobile terminal becomes thinner and thinner, the volume of the sound cavity of the speaker installed on the mobile terminal cannot be made larger. If you simply pursue a large volume The sound cavity will affect the volume of the storage area for storing the battery, which in turn affects the volume of the battery and the battery life of the mobile terminal.

SUMMARY OF THE INVENTION

The present application proposes a mobile terminal to overcome the problem that the volume of the sound cavity of the speaker in the mobile terminal is small.

An embodiment of the present application provides a mobile terminal, including: a substrate, a speaker sound chamber box, and a screen assembly, the substrate is provided with a through hole; the screen assembly is stacked on one side of the substrate; the speaker sound chamber box is disposed on a side of the substrate away from the screen assembly side. The speaker sound cavity box covers the through hole, so that the through hole is located between the speaker sound cavity box and the screen assembly, and the speaker sound cavity box, the screen assembly and the substrate together form a sound cavity.

Compared with the prior art, the casing of the mobile terminal provided by the embodiment of the present application has a through hole, which can increase the volume of the sound cavity of the speaker.

These and other aspects of the present application will be more clearly understood in the description of the following embodiments.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic perspective view of a mobile terminal provided by an embodiment of the present application;

2 is a schematic perspective view of a screen assembly, a substrate, a frame and a speaker sound cavity box of the mobile terminal shown in FIG. 1;

Fig. 3 is the enlarged schematic diagram of the area III of Fig. 2;

FIG. 4 is a perspective exploded schematic view of the screen assembly, the substrate, the frame and the speaker sound cavity box shown in FIG. 2 .

5 is a partially enlarged schematic view of the screen assembly, the substrate and the frame shown in FIG. 4;

Fig. 6 is the three-dimensional schematic diagram of the speaker sound cavity box shown in Fig. 4;

FIG. 7 is a schematic cross-sectional view of the screen assembly, the substrate, the frame, and the speaker sound cavity box shown in FIG. 2 in the longitudinal direction (the longitudinal direction of the mobile terminal).

FIG. 8 is an enlarged schematic view of region VIII of FIG. 7 .

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

Please refer to FIG. 1 to FIG. 3 at the same time, the mobile terminal 100 provided by the embodiment of the present application includes a casing 10 , a speaker sound cavity box 20 and a screen assembly 30 . The speaker sound box 20 is disposed in the casing 10 , the screen assembly 30 is covered on the casing 10 , and the screen assembly 30 and the casing 10 together constitute the appearance structure of the mobile terminal 100 .

Please refer to FIG. 4 and FIG. 5 at the same time, the casing 10 includes a base plate 11 , a frame body 13 and a rear case 15 (see FIG. 1 ). In the present embodiment, the base plate 11 has a substantially rectangular plate shape, the frame body 13 is connected to the outer periphery of the base plate 11 , and the rear case 15 is connected to the frame body 13 . In some embodiments, the base plate 11 and the frame body 13 can be accommodated in the accommodation space formed by the rear case 15 , and the base plate 11 is substantially parallel to the main body of the rear case 15 . The screen assembly 30 is stacked on the side of the substrate 11 away from the rear case 15 , so that the substrate 11 is located between the screen assembly 30 and the rear case 15 . Further, the edge of the screen assembly 30 is connected with the peripheral edge of the rear case 15 , so that the screen assembly 30 and the rear case 15 together constitute the appearance structure of the mobile terminal 100 .

In some embodiments, the substrate 11 and the frame body 13 can be used as a middle frame or a front shell of the mobile terminal 100 , and the substrate 11 can be used as various parts of the mobile terminal 100 (eg, screen, touch cable, USB interface, vibration unit, etc.) In this embodiment, the thickness of the substrate 11 is greater than or equal to 0.4 mm.

Please refer to FIG. 5 , FIG. 7 and FIG. 8 at the same time, the substrate 11 includes a first surface 111 , a second surface 113 and a positioning member 115 , the first surface 111 is away from the second surface 113 , and the first surface 111 faces the screen assembly 30 , the second surface 113 faces away from the screen assembly 30 . The positioning member 115 is connected to the first surface 111 , and the positioning member 115 extends from the first surface 111 toward the rear case 15 . In this embodiment, the positioning member 115 is generally a strip-shaped structure protruding from the first surface 111 , and the positioning member 115 is generally perpendicular to the first surface 111 . The positioning member 115 is used to define the installation position of the speaker sound cavity box 20 .

Further, the substrate 11 is provided with a through hole 117 , and the through hole 117 is disposed adjacent to the positioning member 115 . The through hole 117 penetrates through the first surface 111 and the second surface 112 , and the through hole 117 forms an inner side wall 1171 . The through hole 117 is used to assist in forming the sound cavity 200 of the speaker sound cavity box 20 (see FIG. 8 ).

The frame body 13 is disposed around the outer periphery of the base plate 11 , and the frame body 13 and the base plate 11 together constitute a middle frame structure of the mobile terminal 100 . The frame body 13 is provided with an outer wall 131 , and the outer wall 131 is disposed on the side of the substrate 11 with a relatively short side and on the side of the through hole 117 . In this embodiment, the outer wall 12 is substantially perpendicular to the base plate 11 . The outer wall 131 and the positioning member 115 are disposed opposite to each other, and the outer wall 131 and the positioning member 115 are respectively located on opposite sides of the through hole 117 . The outer wall 131 is used to define the installation position of the speaker sound cavity box 20 together with the positioning member 115, so that the speaker sound cavity box 20 can be arranged close to the outer wall 131, so that the speaker sound cavity box 20 can be located on the end side of the entire mobile terminal 100 (eg top or bottom of the mobile terminal).

Further, the outer wall 131 is provided with a sound outlet hole 1311 therethrough, and the sound outlet hole 1311 is used for exporting the sound of the speaker to the external environment. In this embodiment, the shape of the sound outlet holes 1311 is a rectangle with rounded corners, the number of the sound outlet holes 1311 is three, and the three sound outlet holes 1311 are arranged in a row and are distributed on the outer wall 131 at equal intervals. In other embodiments, the shape of the sound outlet holes 1311 may also be circular, and the number of the sound outlet holes 1311 may be 1, 2, 4, or more than 4.

The speaker sound cavity box 20 is disposed between the positioning member 115 and the outer wall 131 , and is connected to the first surface 11 of the substrate 11 . The position of the speaker sound cavity box 20 corresponds to the position of the through hole 117, and the speaker sound cavity box 20 covers the through hole 117, so that the through hole 117 is located between the speaker sound cavity box 20 and the screen assembly 30, so that the speaker sound cavity box 20. The screen assembly 30 and the substrate 11 together form a sound cavity 200 , and the sound cavity 200 includes a space defined by the through hole 117 .

Further, the outer contour of the speaker sound cavity box 20 is similar to the outline of the through hole 117, and the projected area of the speaker sound cavity box 20 on the substrate 11 is slightly larger than the area of the through hole 117, so that the edge of the speaker sound cavity box 20 can be The first surface 111 is in contact, so that the through hole 117 can be blocked and sealed, so that the speaker sound cavity box 20 , the screen assembly 30 and the substrate 11 together form a closed sound cavity 200 .

Please refer to FIG. 6 and FIG. 8 at the same time, the speaker sound cavity box 20 includes an outer box 21 , a partition 23 and an inner box 25 .

The outer box 21 is stacked on the first surface 111 of the base plate 11 and is approximately located between the positioning member 115 and the outer wall 131 . The outer box 21 is used for accommodating the inner box 25 and used to assist in forming the sound cavity 200 .

The outer box 21 includes a bottom wall 211 and a peripheral wall 213 connected to the bottom wall 211 . The bottom wall 211 is spaced apart from the first surface 111 and substantially parallel to the first surface 111 . A groove 2111 is recessed on the side of the bottom wall 211 facing the first surface 111 , and the groove 2111 is used to assist in forming a sound outlet channel.

The peripheral wall 213 is disposed on the peripheral edge of the bottom wall 211 and extends toward the first surface 111 . In this embodiment, the peripheral wall 213 is substantially perpendicular to the bottom wall 211 , and the end of the peripheral wall 213 facing away from the bottom wall 211 is connected to the first surface 111 . The peripheral wall 213 and the bottom wall 211 together form an accommodating space 215 , and the accommodating space 215 is used for accommodating the partition 23 and the inner box 25 . The accommodating space 215 communicates with the groove 2111 , and at the same time, the accommodating space 512 communicates with the through hole 117 . Further, the peripheral wall 213 is provided with a sound guide hole 2131 on its side close to the outer wall 131, the sound guide hole 2131 is aligned with the sound outlet hole 1311, and the two ends of the sound guide hole 2131 are respectively connected to the groove 2111 and the sound outlet hole. 1311, the groove 2111, the sound guide hole 2131 and the sound outlet hole 1311 together form a sound guide channel, and the sound guide channel is used to conduct sound. When the inner box 25 is arranged in the outer box 21, the sound of the inner box 25 can be transmitted to the external environment through the sound guiding channel.

Further, a side of the peripheral wall 213 close to the positioning member 115 is provided with an overlapping portion 2133 , the overlapping portion 2133 is located at one end of the peripheral wall 213 close to the bottom wall 211 , and the overlapping portion 2133 protrudes relative to the peripheral wall 213 . The overlapping portion 2133 overlaps the end of the positioning member 115 to assist in positioning the speaker sound chamber box 20 . In some embodiments, the overlapping portion 2133 can be fixedly connected to the positioning member 115 to enhance the installation structure strength of the speaker cavity box 20 to increase the stability of the speaker and thus improve the sound effect.

The partition 23 is disposed in the accommodating space 215 and connected to the bottom wall 211 . The partition 23 divides the accommodating space 215 into a first accommodating space 2151 and a second accommodating space 2153. The first accommodating space 2151 is used for accommodating the inner box 25, and the second accommodating space 2153 is communicated with the through hole 117, and is used for A sound cavity 200 is formed in the auxiliary through hole 117 .

The inner box 25 is disposed in the first accommodating space 2153 and is stacked with or connected to the bottom wall 211 of the outer box 21 . The inner box 25 includes a first surface 251 and a second surface 253 facing away from each other, wherein the first surface 251 is away from the bottom wall 211 of the outer box 21 and faces the through hole 117 . The second surface 253 faces the bottom wall 211 and covers the groove 2111, so that the structure of the groove 2111 is a relatively flat concave space structure, so as to facilitate the sound of the inner box 25 to form resonance in the sound guide channel, and through the sound guide holes 2131, The sound outlet 1311 conducts the sound to the outside, so that the sound quality of the speaker can be improved.

The screen assembly 30 is attached to the second surface 112 of the substrate 11 . In this embodiment, the screen assembly 30 includes an outer screen 31 and an inner screen 32, and the inner screen 32 is connected to the second surface 112 and used for displaying images. In a specific embodiment, the inner screen 32 may be directly attached to the second surface 112 or there may be a slight gap. The inner screen 32 is opposite to the speaker sound cavity box 20 and arranged at intervals from each other. Specifically, in the embodiment shown in FIG. 8 , the inner screen 32 is opposite to the bottom wall 211 of the speaker sound cavity box 20 and the first surface 251 of the inner box 25 . . A sound cavity 200 is formed between the inner screen 32 and the first surface 251 through the through hole 117 . The outer screen 31 is stacked on the side of the inner screen 32 away from the second surface 112 , and the outer screen 31 is used to protect the inner screen 32 .

If the substrate 11 is not provided with the through hole 117 and the speaker sound chamber box 20 is directly disposed on the first surface 111 of the substrate 11 , the distance between the speaker sound chamber box 20 and the screen assembly 30 should be approximately equal to the thickness of the substrate 11 . In the present application, a through hole 117 is provided on the substrate 11. Due to the installation restrictions of the positioning member 115 and other structures (such as the sealing member of the through hole 117, which will be described below), the distance between the speaker cavity box 20 and the screen assembly 30 is obviously larger than that of the substrate. 11 thickness.

Specifically, the sound cavity 200 was originally defined between the first surface 251 and the first surface 111 of the substrate 11 . Now, since the through hole 117 penetrates the substrate 11 , the sound cavity 200 of the speaker sound cavity box 20 has an additional through hole 117 and the volume of the space corresponding to the second accommodating space 2153, therefore, the volume of the sound cavity 200 is increased. After specific measurement, for the speaker sound cavity box 20 of the preset size, the volume of the sound cavity 200 is increased by at least 0.15 ml compared with the case without the through hole 117 , which effectively optimizes the sound output effect. When the speaker cavity box 20 is installed on the substrate 11, the first surface 251 is connected as the bottom surface of the speaker cavity box 20 and faces the substrate 11. The greater the distance between the first surface 251 and the first surface 111, the greater the The larger the distance from the screen assembly 30 is, the larger the volume of the first sound cavity 200 is.

Further, please refer to FIG. 5 and FIG. 8 at the same time, in order to improve the sound effect performance of the speaker, the mobile terminal 100 further includes a first sealing member 50 and a second sealing member 52 . The first sealing member 50 is arranged between the substrate 11 and the speaker sound chamber box 20 to block the gap between the substrate 11 and the speaker sound chamber box 20 , and the second sealing member 52 is arranged at the interface between the inner side wall 1171 and the screen assembly 30 where the second sealing member 52 is used to block the gap between the inner sidewall 1171 of the substrate 11 and the screen assembly 30 .

Specifically, there is a certain gap between the first surface 111 of the substrate 11 and the peripheral wall 213 of the speaker cavity box 20 (as shown in FIG. 8 ), and the first sealing member 50 is sandwiched between the first surface 111 and the peripheral wall 213 . Between the parts, and along the periphery of the peripheral wall 213 of the speaker sound cavity box 20 , a circle is arranged to completely seal the junction of the substrate 11 and the speaker sound cavity box 20 . In some embodiments, the first sealing member 50 may be any one of sealing foam, rubber, and silicone.

The substrate 11 is attached to the inner panel 32 , so the inner sidewall 1171 of the substrate 11 and the inner panel 32 have a joint surface. Specifically in the illustrated embodiment, the inner side wall 1171 is substantially perpendicular to the inner screen 32 , and the second sealing member 52 includes a first sealing portion 521 and a second sealing portion 523 connected to the first sealing portion 521 . The second sealing portion 523 It is substantially perpendicular to the first sealing portion 521 . The first sealing portion 521 is attached to the inner screen 32 , and the second sealing portion 523 is attached to the inner side wall 1171 , so as to prevent sound waves from leaking from the junction of the inner side wall 1171 and the inner screen 32 .

Further, in some embodiments, the second sealing member 52 further includes a third sealing portion 525. The third sealing portion 525 is connected to an end of the second sealing portion 523 away from the first sealing portion 521 and is substantially perpendicular to the first sealing portion. 521, so that the cross-sectional shape of the second sealing member 52 is similar to a right-angled Z shape. The third sealing portion 525 is attached to the first surface 111 to consolidate the sealing effect of the second sealing member 52 . In some embodiments, the second sealing member 52 may be any one of a silicone sealing gasket, a rubber sealing gasket or a foam sealing gasket, and the second sealing member 52 may be closely attached to the above-mentioned positions by an adhesive such as double-sided tape . Similar to the first sealing member 50, the second sealing member 52 is disposed around the circumferential extension direction of the inner side wall 1171, so as to achieve the effect of complete sealing.

It can be understood that, if the first surface 111 of the substrate 11 and the peripheral wall 213 of the loudspeaker cavity box 20 are in close contact, for example, the substrate 11 and the inner screen 32 are in a similar manner of adhesion, the first sealing member 50 is disposed The manner may refer to the arrangement manner of the second sealing member 52 . In this embodiment, the first sealing member 50 is disposed closer to the outer side of the speaker cavity box 20 than the second sealing member 52 , and the second sealing member 52 is disposed closer to the inner side.

Please refer to FIGS. 3 to 5 again. When assembling, align the sound guide hole 2131 of the speaker cavity box 20 with the sound outlet hole 1311 on the outer wall 131 , and fix the speaker cavity box 20 to the substrate 11 in an appropriate manner. Here, the appropriate manner may be, but not limited to, fastening manners such as fastener connection and snap-fit.

Please refer to FIG. 5 and FIG. 6 at the same time. In this embodiment, the speaker cavity box 20 is provided with a plurality of first fastener mounting positions 41 on the edge thereof, and the substrate 11 is provided with a plurality of second fastener mounting positions 41 on the periphery of the through hole 117 . The fastener installation position 42, the second fastener installation position 42 corresponds to the first fastener installation position 41 in position, so as to fix the speaker sound cavity box 20 on the Substrate 11 .

To sum up, the casing 10 of the mobile terminal 100 provided by the embodiment of the present application includes the through hole 117 , which can increase the volume of the sound cavity 200 of the speaker and improve the sound output effect of the thin and light mobile terminal.

The mobile terminal may be various handheld devices such as a tablet computer. As used herein, a "communication terminal" (or simply "terminal") includes, but is not limited to, being configured to connect via a wired line (eg, via a public switched telephone network (PSTN), digital subscriber line (DSL), digital cable , direct cable connection, and/or another data connection/network) and/or via (eg, for cellular networks, wireless local area networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM-FM broadcasts device, and/or another communication terminal's) wireless interface to receive/transmit communication signals. A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" and/or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communication System (PCS) terminals that may combine cellular radio telephones with data processing, fax, and data communication capabilities; may include radio telephones, pagers, Internet/Intranet access , a PDA with a web browser, memo pad, calendar, and/or a global positioning system (GPS) receiver; and conventional laptop and/or palm receivers or other electronic devices including radiotelephone transceivers.

The above examples only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (11)

1. a mobile terminal, is characterized in that, comprises: a substrate, the substrate is provided with through holes; a screen assembly stacked on one side of the substrate; and A speaker sound cavity box is arranged on the side of the substrate away from the screen assembly; wherein the speaker sound cavity box covers the through hole, so that the through hole is located between the speaker sound cavity box and the screen assembly In between, the speaker sound cavity box, the screen assembly and the base plate together form a sound cavity; the speaker sound cavity box includes an outer box and an inner box, the outer box is connected to the base plate, and the outer box The bottom wall of the outer box is spaced from the base plate, and the bottom wall of the outer box is provided with a groove communicating with the sound cavity; the inner box is arranged in the outer box and covers the groove, so that the A gap is formed between the bottom wall of the inner box and the outer box, and the gap serves as the first sound cavity of the speaker, and at the same time, the inner box is opposite to the through hole to form the second sound cavity of the speaker, so The first sound cavity and the second sound cavity are respectively located on opposite sides of the inner box. 2 . The mobile terminal of claim 1 , wherein the mobile terminal further comprises a first sealing member, and the first sealing member is disposed between the substrate and the speaker sound cavity box. 3 . 3 . The mobile terminal of claim 1 , wherein the mobile terminal further comprises a second sealing member, the substrate has an inner side wall, the inner side wall surrounds the through hole, and the second sealing member The component is arranged at the junction of the inner side wall and the screen assembly. 4 . The mobile terminal according to claim 1 , wherein a side of the outer box facing the substrate is provided with an accommodating space, the accommodating space is communicated with the through hole, and the inner box is provided with accommodating space. 5 . in the accommodating space. 5 . The mobile terminal of claim 4 , wherein the outer box further comprises a peripheral wall, the peripheral wall is arranged around the peripheral edge of the bottom wall and extends toward the substrate; the peripheral wall is connected to the The bottom walls together form the accommodating space. 6 . The mobile terminal according to claim 5 , wherein the speaker sound cavity box further comprises a partition, and the partition is arranged in the accommodating space and divides the accommodating space into a second accommodating space. 7 . an accommodating space and a second accommodating space; the inner box is accommodated in the first accommodating space, and the through hole communicates with the second accommodating space. 7 . The mobile terminal according to claim 5 , wherein the peripheral wall is provided with a sound guide hole passing through, and the sound guide hole communicates with the groove. 8 . 8 . The mobile terminal of claim 7 , wherein the mobile terminal further comprises an outer wall connected to the base plate, the outer wall is disposed at one end of the base plate and located at one side of the through hole. 9 . The outer wall is provided with a sound outlet, the sound outlet penetrates the outer wall, and the sound outlet is communicated with the sound guide hole. 9 . The mobile terminal of claim 8 , wherein the base plate is provided with a positioning member, the positioning member and the outer wall are spaced apart from each other, and the positioning member and the outer wall are respectively located in the through holes. 10 . On the opposite sides of the speaker, the speaker sound cavity box is arranged between the positioning member and the outer wall. 10 . The mobile terminal according to claim 9 , wherein a side of the peripheral wall close to the positioning member is provided with an overlapping portion, the overlapping portion protrudes relative to the peripheral wall, and the overlapping portion is formed. 11 . The portion overlaps with the end of the positioning member. 11. The mobile terminal according to claim 1, wherein the speaker sound cavity box is provided with a plurality of first fastener installation positions, the base plate is provided with a plurality of second fastener installation positions, and a plurality of second fastener installation positions are provided. Each of the second fastener installation positions is located at the periphery of the through hole, and the plurality of second fastener installation positions are in one-to-one correspondence with the plurality of first fastener installation positions.