Patent Application
20150222736
The present invention relates to a cellular phone case with a hall IC driving shielding magnet, and more particularly, to a cellular phone case with a hall IC driving shielding magnet in which a permanent magnet with a yoke for controlling magnetic force which is integrally provided therein is incorporated in a cellular phone case, to automatically operate a corresponding cellular phone as a hall IC in the cellular phone is driven at the time of opening and closing the cellular phone case.
In general, as the size of a liquid crystal display of a cellular phone (mobile communication terminal) such as a smart phone and a tablet PC increases, various forms of cellular phone cases are manufactured in order to protect a screen and an exterior of the cellular phone to be mounted on the corresponding cellular phone.
Among them, representatively, a wallet form of cellular phone case is most widely used, which is made of leather or artificial leather to cover front and rear surfaces and one surface of a corresponding cellular phone, and expose a screen of the corresponding cellular phone while a front surface part is selectively opened and closed.
However, since the aforementioned cellular phone case in the related art does not have a separate function which interworks with the cellular phone in addition to functions to protect the screen and the exterior of the cellular phone and provide an aesthetic design, there is a limit in providing additional conveniences to a user through the cellular phone case.
That is, if a function to operate the corresponding smart phone in link with the corresponding smart phone automatically is added to the cellular phone case that is mounted in the mobile communication terminal such as the smart phone or the tablet PC to protect a product, convenience of the user may be significantly increased.
Accordingly, the present invention is contrived to solve the problems in the related art and an object of the present invention is to provide a cellular phone case with a hall IC driving shielding magnet in which a yoke and a permanent magnet having a specific structure are incorporated in a cellular phone case to automatically operate a corresponding cellular phone simultaneously with opening and closing the cellular phone case, thereby increasing convenience of a user.
In order to achieve the above object, the present invention provides a cellular phone case with a hall IC driving shielding magnet that is mounted in a cellular phone in such a manner to cover a front surface and a rear surface, and one side surface of the cellular phone to protect an exterior of the corresponding cellular phone, in which a shielding magnet implemented through a permanent magnet and a yoke is configured to be incorporated at a point of a front surface part of the cellular phone case corresponding to a hall IC incorporated in the cellular phone.
Preferably, a pole of the shielding magnet sealed through the yoke, magnetic force shielding is shown in the range of 20 to 96% and in an opened pole not interfered by the yoke, strengthened magnetic force is shown in the range of 105 to 180%, as compared with Eigen surface Gauss of the corresponding permanent magnet.
More preferably, the permanent magnet has a rectangular parallelepiped shape, and the yoke has a quadrangular plate shape or the rectangular parallelepiped shape corresponding to the permanent magnet, or a rectangular parallelepiped shape of which the top is opened.
Further, the permanent magnet has a cylindrical shape, and the yoke has a disk shape or the cylindrical shape corresponding to the permanent magnet or a cylindrical shape of which the top is opened.
According to the present invention configured as described above, while a hall IC is incorporated, which applies a sensing signal for operating a device in a mobile communication terminal such as a smart phone or a tablet PC, a shielding magnet having a specific structure, which is used to drive the hall IC is incorporated in a cellular phone case, and as a result, a corresponding cellular phone is automatically operated simultaneously with opening and closing the cellular phone case, thereby increasing convenience of a user.
Further, as a shielding magnet configured as a yoke and a permanent magnet having a specific structure is adopted, there is an effect that a function to drive the hall IC of the cellular phone can be implemented by a small magnet and there is also an effect that misoperation of a sensor which may occur if a front surface part of the cellular phone case is bent back to a rear surface part can be prevented.
a to 1c are diagrams illustrating a flow of a magnetic field of a general permanent magnet and a permanent magnet in which a yoke is combined.
a and 4b are diagrams illustrating another example of the permanent magnet and the yoke of the shielding magnet applied to the cellular phone case with the hall IC driving shielding magnet according to the present invention.
a to 5c are diagrams illustrating various embodiments of the shielding magnet applied to the cellular phone case with the hall IC driving shielding magnet according to the present invention.
a and 6b are cross-sectional views illustrating a use state of the cellular phones case with the hall IC driving shielding magnet according to the present invention.
Herein, the present invention configured as described above will be described in detail with reference to the drawings.
The cellular phone case with the hall IC driving shielding magnet according to the present invention is implemented to automatically operate a corresponding cellular phone 100 by sensing opening and closing states of a cellular phone case 10 simultaneously with opening and closing the cellular phone case 10 by incorporating a shielding magnet 20 having a specific structure, which is constituted by a permanent magnet 22 and a yoke 24 in the cellular phone case 10.
The cellular phone case with the hall IC driving shielding magnet according to the present invention is applied to a cellular phone case made of leather or artificial leather, which is constituted by a front surface part 12 and a rear surface part 14, and a side surface part 16 in such a manner to cover a front surface and a rear surface, and one side surface of the cellular phone 100.
To this end, a hall IC (hall effect sensor) 110 that generates a predetermined sensing signal by magnetic force having a predetermined magnitude is configured to be incorporated in various mobile communication terminals 100 such as a smart phone or a tablet PC, while the shielding magnet 20 implemented by the permanent magnet 22 and the yoke 24 is configured to be incorporated on the front surface part 12 side of the cellular phone case 10 at a point corresponding to the hall IC 110 in the cellular phone 100.
As well known, a magnetic force line is formed in the permanent magnet in a fully opened state as illustrated in
That is, in a magnetic field of the permanent magnet, attraction force and repulsion force that react depending on metal are differently shown and levels thereof vary depending on permeability of the metal. When high-permeability metal gets closer to the permanent magnet, a flow of the magnetic field is changed and when the metal gets closer to the permanent magnet while the shape and the thickness of metal are appropriately designed, directionality of the magnetic field through induction of the flow of the magnetic field may be changed.
Therefore, according to levels of strengthening and shielding of magnetic force, which are required, the material, the thickness, the shape, and the like of the yoke are changed and the yoke may be integrally combined with the permanent magnet, and as a result, a strengthening rate and shielding rate of the corresponding shielding magnet may be changed.
Herein, the shielding magnet 20 applied to the cellular phone case 10 according to the present invention may be designed in such a manner that in a pole sealed through the yoke 24 having the specific structure, magnetic force shielding is shown in the range of approximately 20 to 96% and in an opened pole not interfered by the yoke 24, strengthened magnetic force is shown in the range of approximately 105 to 180%, as compared with Eigen surface Gauss of the corresponding permanent magnet 22.
The material of the yoke 24 is selected by considering the permeability of metal and the thickness and the shape of the yoke may be designed according to the magnetic force and the size of the permanent magnet 22.
In the exemplary embodiment of the present invention, when the permanent magnet 22 has a rectangular parallelepiped shape, the yoke 24 may have a quadrangular plate shape or the rectangular parallelepiped shape corresponding to the permanent magnet, or a rectangular parallelepiped shape of which the top is opened (see
Further, when the permanent magnet 22 has a cylindrical shape, the yoke 24 may have a disk shape or the cylindrical shape corresponding to the permanent magnet or a cylindrical shape of which the top is opened (see
That is, as illustrated in
Subsequently, an operation of the present invention configured as described above will be described below with reference to the drawings.
Various types of mobile communication terminals 100 such as various cellular phones including a smart phone, a tablet PC, and the like are mounted in the cellular phone case with the hall IC driving shielding magnet according to the present invention, in which the hall IC 110 that generates a sensing signal for operating the corresponding device is configured to be incorporated in a substrate of the mobile communication terminal 100.
Therefore, as the user opens the front surface part 12 of the cellular phone case 10 in which the mobile communication terminal 100 such as the cellular phone is mounted, a magnetic force signal from the permanent magnet constituting the shielding magnet 20 incorporated in the cellular phone case 10 is detected through the hall IC 110, and as a result, the corresponding cellular phone 100 is controlled to be automatically operated.
Thereafter, when the corresponding mobile communication terminal 100 is used, in the case where a user applies external force to allow the front surface part 12 of the cellular phone case 10 to be bent and overlapped with the rear surface part 14, the magnetic force of the permanent magnet 22 is not applied to the hall IC 110 through the yoke 24, and as a result, an arbitrary misoperation of the shielding magnet 20 may be prevented.
Further, when the cellular phone case 10 is closed by returning the front surface part 12 of the cellular phone case 10 to an original position thereof again, the corresponding cellular phone is controlled to be automatically turned off while the magnetic force signal from the permanent magnet 22 of the shielding magnet 20 is detected through the hall IC 110 incorporated in the corresponding mobile communication terminal 100.
That is, the shielding magnet 20 provided on a front surface of the cellular phone case according to the present invention provides a sufficient magnetic force signal on the front surface side of the mobile communication terminal 100 and as the magnetic force signal is decreased through the yoke 24 on the rear surface side, a misoperation of the hall IC 110 may be prevented.
Meanwhile, although modified examples other than contents disclosed in the present invention appear, the modified examples should not individually be understood from the technical spirit and prospect of the present invention and the modified examples are included in the appended claims, of course.
10: Cellular phone case
12: Front surface part
14: Rear surface part
16: Side surface part
20: Shielding magnet
22: Permanent magnet
24: Yoke
100: Mobile communication terminal (cellular phone)
110: Hall IC
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2014/000065 | 1/3/2014 | WO | 00 |
