JP2014216777A - Cover for portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cover for a portable terminal capable of facilitating the amplification output of reproduction sound to be emitted from a speaker of the portable terminal while suppressing the increase of the number of components by using the portable terminal.SOLUTION: A cover 10 for a portable terminal includes a cover body 11 and a swelling part 40. The cover body has a first recession 31 and is attached to the portable terminal when the cover for the portable terminal is mounted on the portable terminal 1, to thereby constitute an acoustic route 50 in cooperation with the portable terminal that clogs a part of the first recession. The swelling part has an opening 41 and a second recession 42 and constitutes a sound emission port 51 that communicates with the acoustic route by using the opening and the second recession. The first recession of the cover body has a sound input part 33 and a communication part 34. The communication part includes a horn shape part 36 whose cross sectional area is enlarged from a sound input part side toward a second recession side, and allows the sound input part and the second recession to communicate each other via the horn shape part.

Description

  The present invention relates to a mobile terminal cover that is detachably attached to a mobile terminal having a speaker unit.

  Conventionally, for example, a cover for a portable terminal disclosed in Patent Document 1 is known as a cover for a portable terminal intended to improve the sound of the portable terminal. In this portable terminal cover, an intake opening is provided to cover the speaker opening on the side surface of the portable terminal, and an outlet opening through which the sound of the speaker of the portable terminal is emitted is provided in front of the portable terminal cover. Yes. A cavity for guiding the sound of the speaker from the intake port toward the outlet opening is formed in the cover for mobile terminal.

Utility Model Registration No. 3171000

  However, the cover for a portable terminal described in Patent Document 1 is merely a cover in which a cavity for guiding sound from the speaker is formed short in order to improve a decrease in volume of the speaker of the portable terminal.

  The present invention has been made in view of such circumstances, and easily amplifies and outputs reproduced sound emitted from the speaker unit of the portable terminal while suppressing an increase in the number of parts by using the portable terminal. An object of the present invention is to provide a portable terminal cover that can be used.

  The invention according to claim 1 is a mobile terminal cover that is detachably attached to a mobile terminal having a speaker unit, and includes at least one of a first facing surface that can face the back surface of the mobile terminal and a peripheral side surface of the mobile terminal. A second opposing surface that can be opposed to a portion of the speaker unit provided with a sound emitting hole, and provided on the first opposing surface and the second opposing surface, and in contact with the first opposing surface and the second opposing surface. A first recess that is partially closed by the mobile terminal, and is attached to the mobile terminal when the cover for the mobile terminal is attached to the mobile terminal to close a part of the first recess. A cover main body that forms an acoustic path in cooperation with the portable terminal, a bulging portion that is connected to the cover main body, an opening that opens to the outside, and the opening and the first recess A second recess for communicating with one end. And a bulging portion that constitutes a sound emitting port that can communicate with the acoustic path using the opening and the second concave portion, and the first concave portion of the cover main body has the other end side of the acoustic path. A sound input unit that is disposed opposite to the sound emission hole of the speaker unit at the time of configuration and can input a reproduction sound emitted from the speaker unit, and a cross-sectional area increases from the sound input unit side toward the second recess side. A horn-shaped portion is included, and the sound input portion and the second recess are communicated with each other via the horn-shaped portion.

  According to this configuration, when the portable terminal cover is attached to the portable terminal, the portable terminal can be protected, and the cover main body and the portable terminal are used to protect the portable terminal. The acoustic path having a horn shape can be formed between one concave portion and the portable terminal facing the concave portion. Therefore, the reproduced sound emitted from the speaker unit is put into the acoustic path through the sound emitting hole, and the amplified sound is output without using electric energy from the sound emitting port communicating with the acoustic path. The amplified output sound can be efficiently radiated to the external space.

  Therefore, just by attaching the mobile terminal cover to the mobile terminal, the playback sound emitted from the speaker portion of the mobile terminal can be easily increased without changing the volume setting on the mobile terminal side, As a result, it is possible to make it easy to hear the output sound as a sufficient volume for the user who is using the portable terminal. In addition, since the mobile terminal equipped with the mobile terminal cover functions as a part of the acoustic path, the mobile terminal cover having a simple structure can be obtained while suppressing an increase in the number of components. .

  According to a second aspect of the present invention, there is provided a portable terminal cover that is detachably attached to a portable terminal having a speaker portion, and a facing surface that can face the back surface of the portable terminal provided with a sound emitting hole of the speaker portion, and A first recess provided on the facing surface and partially closed by the portable terminal in contact with the facing surface, and attached to the portable terminal when the portable terminal cover is attached to the portable terminal. A cover main body that forms an acoustic path in cooperation with the portable terminal that partially closes the first recess, and a bulging portion that is connected to the cover main body and that opens to the outside. And a bulge that constitutes a sound emission port that can communicate with the acoustic path using the opening and the second recess, and the second recess that communicates the opening and one end of the first recess. And a first portion of the cover body. A sound input unit that is disposed opposite to the sound emission hole of the speaker unit when the acoustic path is configured on the other end side, and that can input a reproduction sound emitted from the speaker unit; 2 including a horn-shaped portion whose cross-sectional area increases toward the concave portion side, and having a communication portion for communicating the sound input portion and the second concave portion via the horn-shaped portion. Is.

  According to this configuration, similarly to the first aspect of the invention, the playback sound emitted from the speaker unit of the mobile terminal can be generated on the mobile terminal side only by attaching the mobile terminal cover to the mobile terminal. The volume can be easily increased without changing the volume setting. As a result, the user can easily hear the output sound as a sufficient volume for the user using the portable terminal. And since the said portable terminal with which the said portable terminal cover was mounted | worn fulfill | performs the function which comprises a part of said acoustic path | route, the said portable terminal cover of a simple structure can be obtained, suppressing the increase in a number of parts. .

  According to a third aspect of the present invention, in the portable terminal cover according to the first aspect, the first concave portion of the cover main body extends over substantially the entire region in the longitudinal direction on the first opposed surface. It is a feature.

  According to this configuration, the size of the acoustic path formed by the portable terminal cover cooperating with the portable terminal can be secured relatively large. Therefore, acoustic performance can be improved.

  According to a fourth aspect of the present invention, in the portable terminal cover according to any one of the first to third aspects, the opening of the bulging portion is attached to the portable terminal. In some cases, the portable terminal is opened in a direction in which the display unit faces.

  According to this configuration, if the user is using the mobile terminal with the mobile terminal cover attached while looking at the display unit, an output sound can be output to the user. Therefore, in such a case, it is possible to make it easier for the user to hear the output sound.

  According to a fifth aspect of the present invention, in the portable terminal cover according to any one of the first to fourth aspects, the cover main body is formed between the cover main body and the portable terminal when covering the portable terminal. A packing for sealing the space is provided at least around the opening surface of the sound input section.

  According to this configuration, when the cover for the mobile terminal is mounted on the mobile terminal, the packing is used to connect the facing surface and the mobile terminal at least around the opening surface of the sound input unit among the facing surfaces. The space can be sealed. Therefore, in particular, sound leakage from the gap between the entrance of the acoustic path and the sound emitting hole of the speaker unit in the mobile terminal can be effectively suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, the cover for portable terminals which can amplify and output the reproduction sound emitted from the speaker part of the said portable terminal can be provided, suppressing the increase in a number of parts by utilizing a portable terminal. .

(A) The front view of the portable terminal used as the object which mounts the cover for portable terminals which concerns on 1st Embodiment of this invention. (B) The rear view of the said portable terminal. (C) Bottom view of the mobile terminal. The perspective view of the cover for portable terminals which concerns on 1st Embodiment of this invention. The front view of the cover for portable terminals which concerns on 1st Embodiment of this invention. The left view of the cover for portable terminals which concerns on 1st Embodiment of this invention. The bottom view of the cover for portable terminals which concerns on 1st Embodiment of this invention. XX arrow sectional drawing in FIG. FIG. 4 is a cross-sectional view taken along line YY in FIG. 3. The perspective view which shows the state with which the cover for portable terminals which concerns on 1st Embodiment of this invention was mounted | worn with the portable terminal. The sound pressure level of the output sound of the speaker unit when the mobile terminal cover according to the first embodiment of the present invention is mounted on the mobile terminal, and the sound pressure level of the output sound of the speaker unit when the mobile terminal cover is not mounted The figure which shows the relationship between a difference and frequency. The front view of the cover for portable terminals which concerns on another embodiment of this invention. The front view of the cover for portable terminals which concerns on another embodiment of this invention. The front view of the cover for portable terminals which concerns on another embodiment of this invention. The front view of the cover for portable terminals which concerns on 2nd Embodiment of this invention. The perspective view of the portable terminal of another example in which the cover for portable terminals which concerns on 1st Embodiment of this invention, and the said cover for portable terminals can be mounted | worn.

[First Embodiment]
First, the cover 10 for portable terminals which concerns on 1st Embodiment of this invention is demonstrated, referring an accompanying drawing. In addition, the member which attached | subjected the same code | symbol in each figure is the same or substantially the same member.

  FIG. 1A shows a front view of a portable terminal 1 to which the portable terminal cover 10 is to be attached. FIG. 1B shows a rear view of the portable terminal 1. FIG. 1C shows a bottom view of the mobile terminal 1.

  In the present embodiment, the mobile terminal 1 is a rectangular parallelepiped having a predetermined thickness with the longitudinal direction as the vertical direction and the short direction as the horizontal direction, as shown in FIGS. 1 (A), (B) and (C). Is a smartphone. The portable terminal 1 includes a display unit 2 and a speaker unit 3. The display unit 2 also serves as a touch operation unit, and is provided on the front side of the outer surface of the mobile terminal 1.

  The speaker unit 3 has a sound emitting hole 4, a cavity 5 and a speaker unit 6. The sound emitting hole 4 is for emitting sound to the outside of the portable terminal 1. The sound emitting hole 4 is provided in a part of the peripheral side surface (bottom surface in the present embodiment) of the mobile terminal 1 so as to open to the outside of the mobile terminal 1, where (Direction) It is arranged on one side.

  The cavity 5 is formed inside the portable terminal 1 so as to communicate with the sound emitting hole 4. The speaker unit 6 is accommodated in the cavity 5. The speaker unit 3 is configured such that various sounds including a ringtone reproduced by the speaker unit 6 and a moving image and music are emitted from the sound emission hole 4.

  FIG. 2 is a perspective view of the mobile terminal cover 10. FIG. 3 shows a front view of the mobile terminal cover 10. FIG. 4 shows a left side view of the mobile terminal cover 10. FIG. 5 shows a bottom view of the mobile terminal cover 10. FIG. 6 is a cross-sectional view taken along the line XX in FIG. FIG. 7 shows a cross-sectional view taken along arrow YY in FIG. FIG. 8 shows a perspective view of the mobile terminal cover 10 mounted on the mobile terminal 1.

  As shown in FIGS. 1 to 7, the mobile terminal cover 10 is detachably attached to the mobile terminal 1. In the present embodiment, as shown in FIG. 8, the mobile terminal cover 10 has a back surface of the mobile terminal 1 while the display unit 2 of the mobile terminal 1 is exposed to the outside when the mobile terminal 1 is attached to the mobile terminal 1. And it is comprised so that at least one part of a surrounding side surface may be covered.

  The portable terminal cover 10 includes a cover body 11. The cover main body 11 is a part that is attached to the mobile terminal 1 while covering a part of the mobile terminal 1 when the mobile terminal cover 10 is attached to the mobile terminal 1. It is formed in an appropriate size and shape.

  The cover body 11 has a first facing surface 12 and a second facing surface 13. The first facing surface 12 can face the back surface of the mobile terminal 1. The second facing surface 13 can face at least a portion of the peripheral side surface of the mobile terminal 1 where the sound emitting hole 4 of the speaker unit 3 is provided, that is, a part of the bottom surface.

  In the present embodiment, the cover body 11 includes a first facing portion 15 including the first facing surface 12 and a second facing portion 16 including the second facing surface 13. The cover body 11 is made of a hard material such as a hard resin or an elastic material such as silicon, and the first opposing portion 15 and the second opposing portion 16 are integrally provided.

  The first facing portion 15 is formed in a rectangular plate shape having a predetermined thickness with the longitudinal direction being the up-down direction and the short-side direction being the left-right direction, and the plate surface facing the front of the two plate surfaces is the first facing portion. It is comprised so that the surface 12 may be made. The first facing surface 12 is a flat surface that faces and contacts the flat back surface of the mobile terminal 1, and has a longitudinal width (vertical width) and a short width (similar to the back surface of the mobile terminal 1). Left and right width).

  The second opposing portion 16 is provided so as to extend along the lower outer peripheral edge portion of the first opposing portion 15 and bulge integrally from the lower outer peripheral edge to the front and lower sides of the cover body 11. The surface facing the upper side of the cover main body 11 is configured to form the second facing surface 13. The second facing surface 13 is a flat surface that faces and abuts a part of the flat bottom surface of the mobile terminal 1, and has a height (front-rear width) that is the same or larger than the thickness of the mobile terminal 1. It is formed to have.

  In the present embodiment, the cover main body 11 is provided with a peripheral wall portion 23 that protrudes forward from the first facing portion 12. The peripheral wall portion 23 extends annularly along the outer peripheral edge portion of the first facing surface 12, and is provided so as to protrude integrally from the outer peripheral edge portion to the front of the cover body 11. The peripheral wall portion 23 has flexibility, is formed to have a slightly smaller left-right width and upper-lower width than the portable terminal 1, and to have the same front-rear width.

  Thus, the cover main body 11 forms a receiving concave portion 25 that is formed by the first facing portion 15 and the peripheral wall portion 23 and opens to the front, and the cover 10 for the mobile terminal is connected to the mobile terminal 1. The mobile terminal 1 is fitted into the receiving recess 25 so that the display unit 2 is exposed forward when the first mounting surface is mounted, and the first facing surface 12 and the second facing surface 13 are opposed to the mobile terminal 1. Thus, it is possible to maintain the fitted state in contact with each other.

  A part of the peripheral wall portion 23 that extends along the lower outer peripheral edge portion of the first facing surface 12 is configured by the second facing portion 16 that is thicker than the peripheral wall portion 23. ing. Further, the operation buttons 7 and 8 provided on the peripheral side surface of the mobile terminal 1 or the connection connector 9 (see FIG. 1) are exposed on the peripheral wall portion 23 when the cover body 11 is attached to the mobile terminal 1. Therefore, at least one (three in this embodiment) cutout portions 27, 28, and 29 are provided.

  As shown in FIGS. 2 to 7, the cover body 11 has a first recess 31. The first recess 31 is provided on the first facing surface 12 and the second facing surface 13, and is partially blocked by the mobile terminal 1 in contact with the first facing surface 12 and the second facing surface 13. Is.

  As shown in FIG. 8, the cover body 11 is attached to the mobile terminal 1 when the mobile terminal cover 10 is attached to the mobile terminal 1, and partially closes the first recess 31. The acoustic path 50 is configured in cooperation with the portable terminal 1.

  In the present embodiment, the first recess 31 has a space formed in the first facing surface 12 so as to open to the front of the cover main body 11, and is continuous with the space and upward of the cover main body 11. The space is formed in the second facing surface 13 so as to open, and is formed to have a predetermined depth with respect to each of the first facing surface 12 and the second facing surface 13.

  The first recess 31 is formed when the mobile terminal 1 is mounted on the mobile terminal 1, that is, when the mobile terminal 1 is fitted into the receiving recess 25 of the cover body 11. It is closed in the most area of the opening surface by the back surface and the bottom surface, and communicates with the second recessed portion 42 of the bulging portion 40 described later at each of both end portions and the sound emitting hole 4 in the portable terminal 1. It is configured.

  Thus, using the cover body 11 and the mobile terminal 1, the acoustic path 50 (the speaker of the mobile terminal 1) is provided between the first recess 31 of the cover body 11 and the back and bottom surfaces of the mobile terminal 1. The path in which this sound is propagated from the entrance to the exit while restricting the propagation direction of the reproduced sound emitted from the section 3 is defined. In addition, the white arrow in FIG. 7 represents the propagation direction of the sound when the acoustic path 50 is configured.

  The portable terminal cover 10 further includes the bulging portion 40. The bulging portion 40 is connected to the cover body 11. In the present embodiment, the bulging portion 40 is provided so as to integrally protrude upward from the upper end portion of the cover body 11, and has the same left and right sides as compared with the upper end portion of the cover body 11. It is formed to have a width and a front-rear width.

  The bulging portion 40 has an opening 41 and the second recess 42, and constitutes a sound emission port 51 that can communicate with the acoustic path 50 using these. The opening 41 opens to the outside of the bulging portion 40 (the portable terminal cover 10). The second recess 42 communicates the opening 41 and one end (upper end) of the first recess 31.

  Specifically, the bulging portion 40 is a rectangular parallelepiped portion having a front surface located on the same plane as the front surface of the peripheral wall portion 23 of the cover body 11, and is configured to have the opening 41 on the front surface. ing. Thereby, the sound emission opening 51 is opened in the direction in which the display unit 2 of the mobile terminal 1 faces, that is, the front, when the cover body 11 is attached to the mobile terminal 1.

  The opening 41 is provided as large as possible on the front surface of the bulging portion 40. The second recess 42 that opens toward the front of the bulging portion 40 is provided on the front surface of the bulging portion 40 so that the opening 41 is an opening of itself. The second recess 42 communicates with the upper end of the first recess 31 through a through hole 45 that passes through the lower side of the wall portion at the boundary between the cover body 11 and the bulging portion 40.

  Here, the acoustic path 50 and the sound outlet 51 will be described in more detail. The acoustic path 50 is configured using the first recess 31 of the cover body 11 in the mobile terminal cover 10 and the back and bottom surfaces of the mobile terminal 1. In addition, the sound outlet 51 is configured by using the opening 41 and the second recess 42 of the bulging portion 40 in the mobile terminal cover 10.

  On the acoustic path 50 side, the first recess 31 has a sound input part 33 and a communication part 34. A part of the first recess 31 is closed by the mobile terminal 1, so that a reproduced sound emitted from the speaker unit 3 of the mobile terminal 1 through the sound emission hole 4 is generated by the sound input unit 33. And can be propagated to the sound emission port 51 through the communication part 34.

  Specifically, the sound input unit 33 is disposed on the other end (lower end) side of the first recess 31 so as to be opposed to the sound emission hole 4 of the speaker unit 3 when the acoustic path 50 is configured. It is configured to be able to input a playback sound emitted from. The sound input portion 33 is a portion of the first recess 31 provided on the second facing surface 13 and is formed in a concave shape that opens upward from the cover body 11.

  In the present embodiment, the sound input portion 33 is formed by a groove formed in the second facing surface 13 so as to have a space of a predetermined size, communicates with the sound emission hole 4 of the speaker portion 3, and A portion excluding the communication portion is configured to be blocked by the bottom surface of the mobile terminal 1. That is, the sound input unit 33 can form the entrance of the acoustic path 50 on the opening surface.

  The communication part 34 includes a horn-shaped part 36 for changing the cross-sectional area of the acoustic path 50, and connects the sound input part 33 and the second recess 42 via the horn-shaped part 36. Is formed. The communication portion 34 is a portion of the first recess 31 provided on the first facing surface 12 and is formed in a concave shape that opens toward the front of the cover body 11.

  In the present embodiment, the communication portion 34 is a groove formed in the first facing surface 12 so as to have a space of a predetermined size, and is communicated with the second recess 42 at one longitudinal end (upper end). And it is comprised so that it can be obstruct | occluded by the back surface of the said portable terminal 1 while communicating with the said sound input part 33 by the other longitudinal direction other end (lower end). The communication part 34 forms the horn-shaped part 36 almost entirely.

  The horn-shaped portion 36 (the communication portion 34) extends linearly over substantially the entire region in the longitudinal direction of the first facing surface 12. The horn-shaped portion 36 moves toward the destination of the sound so that the cross-sectional area in the direction orthogonal to the sound propagation direction and the cross-sectional area of the acoustic path 50 changes (from the sound input portion 33 side to the sound input portion 33 side). It is set as the point-expanding shape which a cross-sectional area expands (as it goes to the 2nd recessed part 42 side of the swelling part 40).

  Here, in order to change the cross-sectional area of the acoustic path 50, the groove width in the left-right direction of the horn-shaped portion 36 increases from the sound input portion 33 side to the sound output portion side (from the lower side to the upper side). It is set to gradually spread. Further, the depth of the horn-shaped portion 36 in the front-rear direction is set so as to gradually become deeper with respect to the first facing surface 12 from the sound input portion 33 side toward the sound output portion side.

  On the other hand, on the sound emission port 51 side that is continuous with the acoustic path 50, the second recess 42 receives sound from the acoustic path 50 through the through hole 45 when the acoustic path 50 is configured, It is configured to be able to propagate to the opening 41. The opening 41 is configured to output the sound reaching here to the outside of the mobile terminal cover 10.

  Specifically, the opening 41 is provided over substantially the entire area of the front surface of the bulging portion 40. And the said 2nd recessed part 42 has a bottom face containing the curved surface which becomes low as it goes to the lower end side (the 1st recessed part 31 side) from the upper end of the said bulging part 40, The sound from the said 1st recessed part 31 is said It is comprised so that it can guide toward the opening part 41. FIG.

  Note that a cover or the like may be attached to the bulging portion 40 in order to prevent dust or the like from entering the second concave portion 42 and the first concave portion 31 from the outside through the opening 41. Good. This cover has sufficient air permeability and does not inhibit sound emission from the opening 41 to the outside of the bulging portion 40.

  With the configuration as described above, the portable terminal 1 can be protected when the portable terminal cover 10 is attached to the portable terminal 1, and then the portable terminal cover 10 and the portable terminal 1 are used. The acoustic path 50 having a horn shape can be formed between the first recess 31 of the cover body 11 and the portable terminal 1 (back and bottom surfaces) facing the first recess 31. Therefore, the reproduced sound emitted from the speaker unit 3 is put into the acoustic path 50 through the sound emitting hole 4 and amplified without using electric energy from the sound emitting port 51 leading to the acoustic path 50. The amplified sound can be output, and the amplified output sound can be efficiently radiated to the external space.

  Therefore, simply by attaching the mobile terminal cover 10 to the mobile terminal 1, it is possible to easily reproduce the playback sound emitted from the speaker unit 3 of the mobile terminal 1 without changing the volume setting on the mobile terminal 1 side. As a result, it is possible to make the output sound easy to hear for the user who is using the portable terminal 1 as a sufficient volume. In addition, since the mobile terminal equipped with the mobile terminal cover 10 functions as a part of the acoustic path 50, the mobile terminal cover 10 having a simple structure is obtained while suppressing an increase in the number of parts. be able to.

  In the present embodiment, the first concave portion 31 of the cover main body 11 is extended over almost the entire area in the longitudinal direction of the first facing surface 12, so that the horn-shaped portion 36 of the communicating portion 34. As a result, the size of the horn-shaped portion of the acoustic path 50 can be secured relatively large. Therefore, acoustic performance can be improved.

  Note that the acoustic performance of the mobile terminal cover 10 according to the present embodiment is confirmed by actual measurement. FIG. 9 shows the sound pressure level of the output sound of the speaker unit 3 when the mobile terminal cover 10 is attached to the mobile terminal 1 and the output sound of the speaker unit 3 when the mobile terminal cover 10 is not attached. It is a figure which shows the relationship between the difference with the sound pressure level, and a frequency. From FIG. 9, when the portable terminal cover 10 is attached to the portable terminal 1, an increase in sound pressure level of about 5 dB or higher can be confirmed at a frequency of about 300 Hz or higher, and depending on the frequency, an increase in sound pressure level of 20 dB or higher can be confirmed. Can be confirmed.

  In the present embodiment, further, the opening 41 in the sound emission port 51 is opened in the direction in which the display unit 2 faces when the portable terminal cover 10 is attached to the portable terminal 1, that is, forward. If the user is using the mobile terminal 1 with the mobile terminal cover 10 attached thereto while looking at the display unit 2, the output sound can be output to the user. Therefore, in such a case, it is possible to make it easier for the user to hear the output sound.

  In addition, the portable terminal cover 10 has a packing for sealing between the cover body 11 and the portable terminal 1 when the portable terminal 1 is mounted on the first and second opposing surfaces 12 and 2. It is also possible to configure to include at least the periphery of the opening surface of the sound input unit 33. For example, as shown in FIG. 10, the packings 61 and 62 are made of an elastic material such as silicon rubber or urethane rubber, and the edge of the opening surface of the sound input portion 33 in the second opposing surface 13 and the The first opposed surface 12 may be provided along an edge of the opening surface of the communication portion 34.

  Thereby, for example, even when the outer surface (back surface and peripheral side surface) of the mobile terminal 1 is not made of an elastic material, when the mobile terminal cover 10 is attached to the mobile terminal 1, the packing can be removed. By using this, the degree of sealing between the cover main body 11 and the portable terminal 1 can be increased at least around the opening surface of the sound input unit 33. Therefore, in particular, sound leakage from the gap between the entrance of the acoustic path 50 and the sound emitting hole 4 of the speaker unit 3 in the mobile terminal 1 can be effectively suppressed.

  The mobile terminal cover 10 may be configured to close at least a part of the first recess 31 in the cover body 11 with a closing member instead of the outer surface of the mobile terminal 1. For example, as shown in FIG. 11, the closing member 65 is made of a film or resin, and the sound input part and the sound emission hole 4 of the speaker part 3 are communicated with each other on the second facing surface 13. Instead of the bottom surface of the mobile terminal 1, it may be provided to close the first recess 31.

  In the present embodiment, the cover body according to the present invention has the first recess 31 formed so that one end on the sound emission port 51 side extends in the left-right direction of the first facing surface 12. However, the present invention is not limited to this. For example, if a mobile terminal cover is applied to a mobile terminal with a camera lens installed on the back, as shown in FIG. A cover body 69 having a first recess 68 formed so as to avoid the hole 67 can be obtained.

[Second Embodiment]
Next, a mobile terminal cover 70 according to a second embodiment of the present invention will be described with reference to the accompanying drawings. In the figure, members denoted by the same reference numerals as those in the first embodiment indicate the same or substantially the same members, and the description thereof is omitted as appropriate.

  The mobile terminal cover 70 according to the present embodiment is applied to the mobile terminal 1 in which the mobile terminal cover 10 according to the first embodiment includes the sound emitting hole 4 of the speaker unit 3 on the peripheral side surface. On the other hand, the present invention is applied to a portable terminal provided with a sound emitting hole of a speaker unit on the back surface.

  In the portable terminal cover 70 according to the present embodiment, the shape of the first recess 71 is mainly changed as compared with the first embodiment. Specifically, the first recess 71 is formed on the first facing surface 12 and the second facing surface 13 of the first embodiment in that the first recess 71 is formed only on the facing surface 72. This is different from the recess 31.

  FIG. 13 shows a mobile terminal cover 70 according to the present embodiment. As shown in FIG. 13, the mobile terminal cover 70 includes a cover body 73 and a bulging portion 40.

  The cover body 73 has the facing surface 72 and the first recess 71. The facing surface 72 can face the back surface of the mobile terminal. The first recess 71 is provided on the facing surface 72 and is partially blocked by the mobile terminal in contact with the facing surface 72.

  In the present embodiment, the facing surface 72 is a flat surface that faces and contacts the flat back surface of the mobile terminal, and has a longitudinal width (vertical width) and a short width that are comparable to the back surface of the mobile terminal. It is formed so as to have (horizontal width).

  The first recess 71 is a space formed in the facing surface 72 so as to open to the front of the cover main body 73, and is formed to have a predetermined depth with respect to the facing surface 72. The first recess 71 has a sound input part 77 and a communication part 78.

The sound input unit 77 is disposed opposite to the sound emission hole of the speaker unit on the back surface of the mobile terminal on the other end side of the first recess 71 so that the reproduced sound emitted from the speaker unit can be input. It is configured.

  The communication part 78 includes a horn-shaped part 79 whose cross-sectional area increases from the sound input part 77 side toward the second recessed part 42 side, and the sound input part 77 and the second recessed part 42 are formed into the horn-shaped part. The unit 79 is configured to communicate with each other. Here, the communication part 78 forms the horn-shaped part 79 almost entirely.

  With such a configuration, when the mobile terminal cover 70 is attached to the mobile terminal, the cover main body 73 is attached to the mobile terminal, and the mobile terminal closes a part of the first recess 71. The acoustic path is configured in cooperation. The configured acoustic path has a horn shape and is continuous with the sound emission port 51 on the bulging portion 40 side.

  In addition, although the cover for portable terminals which concerns on this invention is made into the cover for portable terminals corresponding to the portable terminal which is a smart phone in 1st Embodiment and 2nd Embodiment, it is not limited to this, For example, a cover for a portable terminal corresponding to different types of portable terminals such as a tablet terminal and a portable music player can be appropriately changed within the scope of the invention described in the claims.

  In addition to the portable terminal itself such as the portable terminal 1 in the first embodiment, the portable terminal to which the portable terminal cover according to the present invention can be attached includes, for example, a speaker unit as shown in FIG. It also includes a portable terminal 82 in a state in which a protective case 81 or the like is mounted so that the sound hole 80 is exposed to the outside.

DESCRIPTION OF SYMBOLS 1 Mobile terminal 2 Display part 3 Speaker part 4 Sound emission hole 10 Cover for portable terminals 11 Cover main body 12 1st opposing surface 13 2nd opposing surface 31 1st recessed part 33 Sound input part 34 Communication part 36 Horn shape part 40 Swelling part DESCRIPTION OF SYMBOLS 41 Opening part 42 2nd recessed part 50 Acoustic path 51 Sound emission port 70 Cover for portable terminals 71 1st recessed part 72 Opposite surface 73 Cover main body 77 Sound input part 78 Communication part 79 Horn shape part

Claims (5)

In a mobile terminal cover that is detachably attached to a mobile terminal having a speaker unit,
A first opposing surface that can face the back surface of the mobile terminal; a second opposing surface that can face at least a portion of the peripheral side surface of the mobile terminal provided with a sound emitting hole; and the first opposing surface And a first recess provided on the second facing surface and partially closed by the portable terminal in contact with the first facing surface and the second facing surface, and the portable terminal of the portable terminal cover A cover main body that is attached to the mobile terminal and forms a sound path in cooperation with the mobile terminal that closes a part of the first recess,
A bulging portion that is continuous with the cover body, and has an opening that opens to the outside, and a second recess that communicates the opening and one end of the first recess, and the opening and the A bulging portion that constitutes a sound outlet that can communicate with the acoustic path using a second recess;
The first concave portion of the cover body is disposed opposite to the sound emitting hole of the speaker unit at the other end side when the acoustic path is configured, and a sound input unit that can input reproduced sound emitted from the speaker unit; A horn-shaped portion whose cross-sectional area increases from the input portion side toward the second concave portion side, and a communication portion that communicates the sound input portion and the second concave portion via the horn-shaped portion. A cover for a portable terminal, characterized in that In a mobile terminal cover that is detachably attached to a mobile terminal having a speaker unit,
A facing surface capable of facing the back surface of the portable terminal provided with a sound emitting hole of the speaker unit, and a first recess provided on the facing surface and partially blocked by the portable terminal contacting the facing surface And a cover that is attached to the portable terminal when the portable terminal cover is attached to the portable terminal and that forms an acoustic path in cooperation with the portable terminal that partially closes the first recess. The body,
A bulging portion that is continuous with the cover body, and has an opening that opens to the outside, and a second recess that communicates the opening and one end of the first recess, and the opening and the A bulging portion that constitutes a sound outlet that can communicate with the acoustic path using a second recess;
The first concave portion of the cover body is disposed opposite to the sound emitting hole of the speaker unit at the other end side when the acoustic path is configured, and a sound input unit that can input reproduced sound emitted from the speaker unit; Including a horn-shaped portion whose cross-sectional area increases from the input portion side toward the second concave portion side, and having a communication portion for communicating the sound input portion and the second concave portion via the horn-shaped portion. A cover for a portable terminal, characterized in that   The cover for a portable terminal according to claim 1, wherein the first concave portion of the cover body extends over substantially the entire region in the longitudinal direction on the first facing surface.   The opening of the bulging portion is opened in a direction in which the display unit of the mobile terminal faces when the mobile terminal cover is attached to the mobile terminal. The portable terminal cover according to claim 1.   The cover body includes a packing for sealing between the cover body and the mobile terminal when the mobile terminal cover is attached to the mobile terminal, at least around the opening surface of the sound input unit. The cover for portable terminals as described in any one of Claims 1 thru | or 4 characterized by the above-mentioned.

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