JP2002164984A - Cell phone cases - Google Patents

Abstract

(57) [Summary] A housing direction can be accommodated by a housing direction defining member in a housing direction in which at least one of an external antenna and a built-in antenna is close to a facing surface located on the opposite side of a user. Therefore, the present invention provides a mobile phone case that reduces the influence of the human body, increases the gain of the mobile phone antenna, and improves the communication state of the mobile phone. A mobile phone case (1) regulates a housing direction of a mobile phone (100) so that an external antenna (111) and a built-in antenna (112) come outside a human body. The mobile phone case 1 is attached to the user's belt B by the case fixing portion 3. By keeping the antenna away from the human body, which is a shield,
Make the gain good.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile phone case for housing a mobile phone.

[0002]

2. Description of the Related Art A case for a portable telephone has an opening, and a case body provided with a retaining piece for preventing the portable telephone housed in the opening from being detached, and a case body for a user. And a case fixing portion provided on one surface of the case main body for fixing to a belt. The main purpose of this type of mobile phone housing case is to protect the mobile phone against external impact.

[0003]

As shown in FIG. 10, a case for a portable telephone according to the prior art is fixed to a user's waist by a case fixing portion in a state in which the portable telephone is housed. At this time, the mobile phone 100 has a front surface (a surface on which the display unit 102, the button switch unit, and the like are arranged).
Are housed in the mobile phone case so as to face the facing surface of the case body. For this reason, since the display unit is arranged in the direction opposite to the human body, the antenna of the mobile phone 100 (that is, the external antenna 111 and the built-in antenna 112 protruding outward from the mobile phone) comes close to the human body side of the user. . For this reason, the user's human body becomes a shield against the antenna. FIG. 11 is an antenna gain characteristic diagram showing the antenna gain in this antenna arrangement. The mobile phone 10 in this prior art mobile phone case
In the arrangement of 0, the user U becomes a shielding object, and this portion lowers the antenna gain, and the communication state may be deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and provides a case for a portable telephone capable of increasing the gain of an antenna of the accommodated portable telephone and improving the communication state. It is an object.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to claim 1 has an opening, a reference surface, and a facing surface opposed to the reference surface, and is accommodated in the portable telephone. In order to secure the case body, the case body is formed of a rectangular cylindrical body having a retaining piece near the opening, and the reference surface is brought close to the user's body to fix the case body to the user's body. , A case fixing portion provided on the reference surface, wherein the case body has at least one of an external antenna and a built-in antenna of the mobile phone close to the facing surface. A housing direction defining member for defining a housing direction of the mobile phone is provided.

According to a second aspect of the present invention, in the mobile phone case according to the first aspect, the housing direction defining member is an antenna insertion portion formed in the retaining piece for inserting the external antenna. It is characterized by.

According to a third aspect of the present invention, in the mobile phone case according to the first aspect, the housing direction defining member is an antenna insertion portion formed in the case main body so as to insert the external antenna. Features.

According to a fourth aspect of the present invention, in the mobile phone case according to the first aspect, the housing direction defining member is formed in the case body so as to communicate with an earphone / microphone set terminal of the mobile phone. It is characterized by an earphone / microphone communication hole.

According to a fifth aspect of the present invention, in the mobile phone case according to the first aspect, the housing direction defining member is a terminal formed in the case body so as to communicate with an external connection terminal of the mobile phone. It is a communication hole.

According to a sixth aspect of the present invention, in the mobile phone case according to the first aspect, the mobile phone case is used for a mobile phone provided with a built-in antenna on the back side of the display unit. The accommodating direction defining member is a window formed on a reference surface of the case main body so that the display unit of the mobile phone can be viewed.

According to a seventh aspect of the present invention, in the mobile phone case according to the first aspect, the mobile phone case is used for a mobile phone having a built-in antenna provided on a back side of a display unit. The housing direction defining member is a case fixed portion formed by a window formed on a reference surface of the case main body and a transparent member so that a display portion of the mobile phone can be viewed.

According to an eighth aspect of the present invention, there is provided the mobile phone case according to any one of the first to seventh aspects, wherein the mobile phone case is used for a mobile phone having a built-in antenna on the back side of the display unit. And a housing exposed portion for exposing a portion of the housing of the mobile phone close to the built-in antenna is formed on the facing surface.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [A. Embodiment] A mobile phone case according to an embodiment of the present invention will be described below with reference to the drawings.

<A1> Configuration of Mobile Phone and Mobile Phone Case <A1-1> Schematic Configuration of Mobile Phone FIG. 1 is a perspective view showing a state before a mobile phone is accommodated in a mobile phone case. The mobile phone 100 includes a housing 101
, A display unit 102, a button switch unit 103, an audio input / output unit including a microphone 104A and a speaker 104B, and a battery 105. The housing 101 is
A front surface 101A, a back surface 101B opposed to the front surface 101A,
Right side 101C, left side 10 facing right side 101C
1D, bottom surface 101E, top surface 10 facing bottom surface 101E
1F.

The display unit 102 has a front surface 101A of the housing 101.
The button switch unit 103 provided on the upper side
The microphone 104A of the audio input / output unit 104 is located below the switch unit 103, and the speaker 104B is located above the display unit 102. The battery 105 is detachably provided below the back surface 101B. Further, on the left side of the upper surface 101F and on the back surface 101B side, an external antenna 111 that can be extended and contracted with respect to the upper surface 101F is provided, and on the upper surface of the back surface 101B, that is, on the back surface side of the display unit 102, as shown in FIG. A built-in antenna 112 is built in. Furthermore, the right side 101C
An earphone / microphone set terminal 113 to which a terminal of an earphone / microphone set (not shown) is connected is provided on the upper part of the display, and an external connection terminal 114 is provided on the bottom surface 101E (see FIG. 2).

<A1-2> Schematic Configuration of Cell Phone Case The cell phone case 1 is provided on a case main body 2 entirely formed of a flexible material such as vinyl chloride cloth and a reference surface 2A of the case main body 2. And the case fixing portion 3. The case body 2 has an opening 4 opening upward, and has a reference surface 2A, an opposing surface 2B opposing the reference surface 2A, a right side 2C, a left side 2D opposing the right side 2C,
Bottom surface 2E, mobile phone 10 housed opposite bottom surface 2E
It is provided with a retaining piece 2F for retaining the "0".

FIG. 3 is a view showing a cloth for forming the case body 2. This cloth 10 is made of a single flexible material, a portion 10A serving as a reference surface 2A, a portion 10B serving as an opposing surface 2B facing the reference surface 2A, a portion 10C serving as a right side 2C, and a left side facing the right side 2C. 2D part 1
0D, a portion 10E serving as the bottom surface 2E, and a portion 10F serving as the retaining piece 2F facing the bottom surface 2E. A hook tape 5A is adhered to the tip of a portion 10F serving as the retaining piece 2F, and a loop tape 5B is attached to a portion 10D serving as the left side 2D facing the hook tape 5A. The hook tape 5A and the loop tape 5B are formed by hooks and hooks forming hook-and-loop fasteners that adhere to each other, and this hook-and-loop fastener is generally widely known as Velcro (registered trademark of Nippon Velcro Co., Ltd.). In addition, a snap may be provided without being limited to the magic tape.

An antenna insertion portion 6 through which the external antenna 111 is inserted is cut out and formed on the right side of the center of the portion 10F serving as the retaining piece 2F. An earphone / microphone communication hole 7 communicating with the earphone / microphone terminal 113 is formed in the upper part of the portion 10C to be the right side surface 2C, and the bottom surface 2E is formed.
A terminal communication hole 8 communicating with the external connection terminal 114 is formed in the portion 20E. This antenna insertion portion 6,
The earphone / microphone communication hole 7 and the terminal communication hole 8 serve as accommodation direction regulating members that regulate the accommodation direction of the mobile phone 100. Further, a case fixing portion 3 made of a belt-like body for fixing the case main body 2 to a user's belt is provided on a portion 10A serving as a reference surface 2A. The case fixing portion 3 has one end fixed above the portion 10A serving as the reference surface 2A, and the other end detachably attached to the lower side of the portion 10A serving as the reference surface 2A by a snap 3A. In addition, not only the snap but also a magic tape as described above may be provided. When manufacturing the case 1 from the cloth 10 formed in this way, the dotted line portion in FIG. 3 and the helicopter are sewn with a sewing machine. At this time, a portion of the fabric 10 which is to be a helicopter and a side is subjected to processing such as top stitching, binding, or lip.

<A2> State of Accommodation of Mobile Phone in Mobile Phone Case The mobile phone 100 is added to the mobile phone case 1 according to the present embodiment.
In order to accommodate the opening 4, as shown in FIG. 1, the user adjusts the surface 101 </ b> A of the mobile phone 100 to the reference surface 2 </ b> A of the mobile phone case 1 from the bottom 101 E side.
Insert When the mobile phone 100 is housed in the case body 2, the earphone / microphone set terminal 1 of the mobile phone 100
Reference numeral 13 communicates with the outside through the earphone / microphone communication hole 7, and an external connection terminal 114 communicates with the outside through the terminal communication hole 8. Thereafter, the retaining piece 2F is attached to the mobile phone 100.
The hook tape 5A is attached to the loop tape 5B while covering the upper surface 101F of the mobile phone 100 to prevent the mobile phone 100 from falling off. At this time, the external antenna 111 is inserted into the antenna insertion section 6. In other words, the mobile phone case 1 defines the housing direction of the mobile phone 100,
To accommodate.

<A3> Effect of the present embodiment When carrying the mobile phone 100 using the mobile phone case 1 according to the present embodiment, the user fixes the case of the mobile phone case 1 as shown in FIG. The part 3 is attached to the belt B of the user. Thereby, the mobile phone case 1 is fixed to the user's waist via the belt B. The cell phone case 1 according to the present embodiment is
The external antenna 111 and the built-in antenna 112 are placed away from the human body and arranged on the opposite side of the human body (ie, on the side opposite to the human body).

FIG. 5A is a view showing an experimental result of an antenna gain corresponding to a distance between the external antenna 111 and a human body. The horizontal axis represents the distance L [mm] between the human body and the external antenna 111 as shown in FIG. 5B, and the vertical axis represents the antenna position L based on the gain of the external antenna according to the related art. The relative value of the antenna gain is shown in dB. The thickness of the mobile phone 100 is about 15 [m
m], the mobile phone case 1 according to the present embodiment
The external antenna 111 of the mobile phone 100 accommodated in
The position is about 10 [mm], and it can be seen that the gain is improved by about 5 dB as compared with the antenna gain of the mobile phone case of the related art.

FIG. 6 is an antenna gain characteristic diagram based on experimental values of the radiation pattern showing the antenna gain in the arrangement of the built-in antenna 112. As is clear from FIG. 6, the mobile phone case 1 according to the present embodiment separates the built-in antenna 112 from the human body of the user U, and separates the built-in antenna 112 from the human body serving as a shielding body. In comparison, the antenna gain can be increased. Specifically, it can be seen that the antenna gain in the X-axis direction, that is, the axis extending in the human body direction, is improved by about 5 dB. Also, the average value of the antenna gain by the built-in antenna 112 is improved by about 2 dB as compared with the related art. As a result, the mobile phone case 1 according to the present embodiment can increase the antenna gain of the mobile phone 100 by keeping the external antenna 111 and the built-in antenna 112 away from the user's body, and maintain a good communication state. As a result, the power consumption of the mobile phone 100 can be reduced by improving the antenna gain.

[B. Modifications] Although the embodiment according to the present invention has been described above, the above embodiment is an example of the present invention, and can be arbitrarily modified within the scope of the present invention.
The following modifications are possible.

<B1> First Modification FIG. 7 shows a mobile phone case according to a first modification. The mobile phone case according to the first modification has a lateral opening. In this case, as shown in FIG. 7, the mobile phone case 21 is formed by a case main body 22 and a case fixing portion 23. Case body 2
2 has an opening 24 that opens to the left, and a reference surface 22.
A, opposing surface 22B opposing reference surface 22A, right side surface 22
C, mobile phone 100 housed opposite right side surface 22C
22D, a bottom surface 22E, and a top surface 22F facing the bottom surface 22E. Further, an antenna insertion hole 25 serving as a housing direction regulating member is formed in the opening 23 of the upper surface 22F and the rear surface 22B. Also in the mobile phone case 21 formed in this manner, the position of the external antenna 111 is defined by the antenna insertion hole 25, and the housing direction of the mobile phone 100 is defined. Then, the mobile phone case 21 arranges the external antenna 111 and the built-in antenna 112 at positions away from the user.

<B2> Modification 2 FIG. 8 shows a mobile phone case according to Modification 2. In this modified example 2, the fabric 1 for forming the case
A case for a mobile phone according to the present modification will be described with reference to 0 '. The fabric 10 'is a portion 10B that becomes the facing surface 2B.
The housing exposed portion 9 is cut out and formed on the upper side of the housing. The case exposure section 9 exposes a portion of the case 101 close to the built-in antenna 112. Thus, the mobile phone case allows the built-in antenna 112 to communicate with the outside via the housing exposed portion 9. The antenna gain of the built-in antenna 112 is higher than that of the first embodiment.

<B3> Third Modification FIG. 9 shows a mobile phone case according to a third modification. In the mobile phone case 31 according to the third modification, the window 32 is formed of a transparent material on the reference surface 2A, and the case fixing portion 33 is also formed of a transparent material.
The window 32 is provided for the mobile phone 1 with respect to the mobile phone case 31.
00, the display direction 102 and the button switch section 103 of the accommodated mobile phone 100 can be visually observed while being accommodated. The window 32 serves as a housing direction regulating member for regulating the housing direction of the mobile phone. In the case of the mobile phone 100 having the built-in antenna 112 on the opposite side of the display unit 102 as in the present embodiment, the display unit 102 and the button switch unit 103 are arranged on the window 32 side so that the mobile phone 100 And the built-in antenna 112 is arranged outside the user.

<B4> Modification 4 The present invention is not limited to the shape of the mobile phone case other than the above-described embodiment and each of the modifications. What is necessary is just to specify the housing direction of the mobile phone 100 so that the mobile phone 100 is kept away from the mobile phone. For example, an earphone / microphone communication hole 7 or a terminal communication hole 8 may be formed in the case main body without defining the antenna insertion portion 6 in the retaining piece to define the housing direction of the mobile phone 100.

<B5> Modification 5 In the above embodiment and each modification, the external antenna 111
Has been described as a mobile phone case used for the mobile phone 100 disposed on the left side of the upper surface 101F and on the back surface 101B side, but the present invention is not limited to this, and the external antenna is disposed on the upper right side. Is also applicable. In this case, an antenna insertion portion for inserting the external antenna may be formed in the mobile phone case. Also,
In the case of a mobile phone in which the external antenna is arranged at the center in the thickness direction of the mobile phone, the housing direction of the mobile phone is not defined only by the portion through which the antenna is inserted. Therefore, another housing direction defining member (for example, an earphone / microphone communication hole, a terminal communication hole, or the like) is formed in the mobile phone case. Thus, the housing direction of the mobile phone may be defined by these housing direction defining members. Furthermore, the mobile phone case is not limited to a mobile phone having the above-described shape, and may be used for a foldable mobile phone. In this case, the case for the mobile phone may be provided with a housing direction defining member (for example, an antenna insertion portion, an earphone / microphone communication hole, a terminal communication hole, etc.) for defining a housing direction of the foldable mobile phone. Good.

<B6> Modification 6 In the above-described embodiment and each modification, the external antenna 1
Phone 100 equipped with mobile phone 11 and built-in antenna 112
Has been described, but the mobile phone case according to the present invention is not limited thereto, and can be applied to a mobile phone having one of an external antenna and a built-in antenna. . In this case, in a mobile phone case used for a mobile phone having only an external antenna, a housing direction defining member such as an antenna insertion portion, an earphone / microphone communication hole, and a terminal communication hole may be provided in the main body case. . On the other hand, in a mobile phone case used for a mobile phone having only a built-in antenna, a housing direction defining member such as an earphone / microphone communication hole and a terminal communication hole may be provided in the main body case.

[0030]

As described above, in the mobile phone case according to the present invention, at least one of the external antenna and the built-in antenna is brought close to the opposing surface located on the opposite side of the user by the housing direction defining member. Since the mobile phone can be accommodated in the accommodation direction, the effect of the human body can be reduced, the gain of the antenna of the mobile phone can be increased, and the communication state of the mobile phone can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a mobile phone case and a mobile phone according to an embodiment of the present invention.

FIG. 2 is a front view, a top view, a bottom view, and a right side view of the mobile phone according to the embodiment.

FIG. 3 is a view showing a fabric for forming the mobile phone case according to the embodiment;

FIG. 4 is a diagram showing a state in which the mobile phone case according to the embodiment is attached to a user's belt.

FIG. 5 is a characteristic diagram showing a relationship between a distance between an external antenna and a human body and an improved gain.

FIG. 6 is a characteristic diagram showing a gain of a built-in antenna of the mobile phone housed in the mobile phone case according to the embodiment.

FIG. 7 is a perspective view showing a mobile phone case and a mobile phone according to a first modification.

FIG. 8 is a view showing a fabric for forming a mobile phone case according to a second modification.

FIG. 9 is a perspective view showing a mobile phone case and a mobile phone according to a third modification.

FIG. 10 is a view showing a state in which a mobile phone case according to the related art is attached to a user's belt.

FIG. 11 is a characteristic diagram showing a gain of a built-in antenna of a mobile phone housed in a mobile phone case according to the related art.

[Explanation of symbols]

 1, 21, 31: Case for mobile phone 2, 22, ... Case body 3, 23, 33 ... Case fixing part 4, 24 ... Opening 6, 25 ... Antenna insertion part (accommodation) Direction defining member) 7 ... Earphone / microphone communication hole (accommodation direction defining member) 8 ... Terminal communication hole (accommodation direction defining member) 9 ... Case exposed portion 32 ... Window portion 100 ... Cellular phone 102 Display unit 111 External antenna 112 Built-in antenna

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tadao Takami 2-1-1-1, Nagatacho, Chiyoda-ku, Tokyo F-term in NTT DoCoMo, Inc. (reference) 5J047 AA01 AA04 AB06 AB13 FA09 FD01 5K023 AA07 BB00 DD06 EE02 LL05 LL06 MM03 MM25 NN06 PP12 5K067 AA06 BB04 EE02 KK03 KK17

Claims (8)

[Claims] 1. A rectangular cylindrical shape having an opening, a reference surface, and an opposing surface facing the reference surface, and having a retaining piece near the opening to prevent the accommodated mobile phone from falling off. A case main body made of a body, and a case fixing portion provided on the reference surface to fix the case main body to the user's body by bringing the reference surface close to the user's body side; Is provided with a housing direction defining member that defines a housing direction of the mobile phone such that at least one of an external antenna and a built-in antenna of the mobile phone is close to the facing surface. Mobile phone case. 2. The mobile phone case according to claim 1, wherein the housing direction defining member is an antenna insertion portion formed in the retaining piece so as to insert the external antenna. Case. 3. The mobile phone case according to claim 1, wherein the housing direction defining member is an antenna insertion portion formed in the case main body to insert the external antenna. Case. 4. The mobile phone case according to claim 1, wherein the housing direction defining member is formed in the case main body so as to communicate with an earphone / microphone set terminal of the mobile phone. A case for a mobile phone. 5. The mobile phone case according to claim 1, wherein the housing direction defining member is a terminal communication hole formed in the case body so as to communicate with an external connection terminal of the mobile phone. Characteristic mobile phone case. 6. The case for a mobile phone according to claim 1, wherein the case for a mobile phone is used for a mobile phone having a built-in antenna provided on a back surface side of a display unit, and the housing direction defining member is provided. Is a window portion formed on a reference surface of the case main body so that a display portion of the mobile phone can be visually observed. 7. The case for a mobile phone according to claim 1, wherein the case for a mobile phone is used for a mobile phone having a built-in antenna on a back side of a display unit, and the housing direction defining member is provided. A case for a mobile phone, comprising: a window formed on a reference surface of the case main body and a case fixing portion formed by a transparent member so that a display unit of the mobile phone can be viewed. 8. The mobile phone case according to claim 1, wherein the mobile phone case is used for a mobile phone provided with a built-in antenna on a back surface side of a display unit, and the facing surface is provided. A case for a mobile phone, wherein a housing exposed portion for exposing a portion of the housing of the mobile phone near the built-in antenna is formed.