JP7116002B2 - Case for mobile terminal - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal case, and more particularly, to a mobile terminal case capable of activating a wireless charging function.

Due to the development of information and communication technology and semiconductor technology, electronic products with various purposes tend to be miniaturized to have mobility and portability. integration is accelerating. Along with the popularization of smartphones, the market for accessories for smartphones is growing rapidly.

Typically, smartphone cases are used not only for the functional purpose of protecting the smartphone's display/touch panel and other external parts from physical impacts, but also for the aesthetic purpose of complementing the smartphone's color and design. In terms of overall satisfaction, it can be seen that the demand is as saturated as the smartphone market.

On the other hand, as one of the technical issues of smartphones, wireless charging functions that charge without using wires for supplying power to smartphone batteries, such as magnetic induction method, magnetic resonance method, electromagnetic wave method, etc. The wireless charging function according to the method is already being reflected as an essential function of smart phones with the progress of standardization such as WPC (Wireless Power Consortium) and A4WP (Alliance for Wireless Power).

In such an environment, despite the fact that wireless charging is commonly used, the present invention is based on the recognition that the wireless charging function cannot be smoothly performed by the smartphone case used for product protection and aesthetic desires. I have come to pay attention to it.

Korea Registered Patent No. 1554109

SUMMARY OF THE INVENTION The present invention provides a case for a mobile terminal capable of activating a wireless charging function.

A case for a mobile terminal according to the present invention includes a cover unit attached to the mobile terminal so as to protect the mobile terminal, and an external cover unit provided in the cover unit and capable of wirelessly charging the mobile terminal. a first power source attachment part for electrically connecting with a power source device ; and a line charge activation.

Preferably, the cover unit is made of polycarbonate (PC), polyurethane (PU), silicon, or a composite material containing these.

The cover unit includes an inner cover body formed in a shape corresponding to the mobile terminal so as to surround the rear surface of the mobile terminal, and an inner cover body formed to surround the inner cover body. Preferably, an outer cover body is formed in a corresponding shape, and the first power source attachment part is formed to be positioned between the inner cover body and the outer cover body.

a battery unit, wherein the battery unit is detachably attached to the cover unit behind the cover unit and supplies power for wireless charging of the mobile terminal; An induction coil unit for transmitting power to the mobile terminal in a wirelessly chargeable manner; and a second power source attachment unit coupled with the first power source attachment unit to be attached to the cover unit . The second power source attachment portion is formed at a position corresponding to the formation position of the first power source attachment portion and achieves electrical connection with the first power source attachment portion.

The first power source attachment portion and the second power source attachment portion are provided at positions corresponding to each other in the cover unit and the battery unit, respectively. One or both of them is preferably formed of a magnet for magnetic coupling or a metal material coupled with a magnet.

The battery unit includes a battery body having a predetermined internal space to accommodate the charging part, and a front part of the battery body exposed toward the cover unit, and the induction coil part and the second power source. It preferably includes a coil mounting plate provided with attachments.

The battery body may be provided with a light-emitting lamp that lights up through the charging power source of the charging unit, and a lighting button for turning on/off the light-emitting lamp.

The battery body has a built-in substrate portion for mounting the light-emitting lamp, and the second power source attachment portion formed on the coil mounting plate affects the driving of the substrate portion and the induction coil portion. It is preferable that the substrate portion and the induction coil portion be positioned so as not to overlap each other so as not to exert a

According to the present invention, a wireless charging activator for wireless charging activation or deactivation is built in the mobile terminal case so that the battery power can be wirelessly charged to the mobile terminal without a separate cable connection. Since it is unnecessary, there is an advantage that portability, movement, and convenience of use are increased.

A person having ordinary knowledge in the technical field to which the present invention pertains should recognize that the effects of the present invention are not limited to those described above, but are widely recognized.

1 is a perspective view of an embodiment of a mobile terminal case according to the present invention; FIG. FIG. 2 is an exploded perspective view of the mobile terminal case of FIG. 1; FIG. 2 is an exploded perspective view of a battery unit of the mobile terminal case of FIG. 1; FIG. 4 is a battery portion and a front view of the separated battery unit of FIG. 3; FIG. 2 is a cross-sectional view of the mobile terminal case of FIG. 1 attached to a mobile terminal; FIG. 2 is a block diagram showing the configuration of a wireless charging activator in the mobile terminal case of FIG. 1;

Hereinafter, mobile terminal cases according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing any embodiment that can be implemented from the present invention, if a description of a component or feature of the present invention may obscure the gist of the present invention due to public knowledge, the detailed description will be omitted. However, the text of the detailed description will focus on specific embodiments illustrated in the drawings. However, it is not intended to limit the invention to any particular embodiment, but should be understood to include modifications, changes, variations and equivalents falling within the spirit and scope of the invention.

As used herein, the term "comprising" or "consisting of" means that the relevant feature, attribute, configuration, or component is present, but does not include only those features, attributes, configurations, or components; It is to be understood that it does not exclude the possibility that one or more other features, attributes, configurations, components and combinations thereof may exist or be added.

And, as used herein, the term "exemplary" means "provided as an example, in one instance, or in one illustration," and the "exemplary" aspect is preferred over other aspects. or be construed as advantageous. Also, it should be understood to encompass one or more of the plural forms unless explicitly stated in the singular form.

1 to 6 show a perspective view, an isolated perspective view, and a cross-sectional view of an embodiment of a mobile terminal case 10 according to the present invention.

The mobile terminal case 10 can activate the wireless charging function of the mobile terminal 1 when a power source device capable of performing wireless charging approaches the mobile terminal 1 capable of wireless charging.

The mobile terminal case 10 of the present embodiment includes a cover unit 100 attached to surround the mobile terminal 1, a first power source attachment part 200 for electrical connection with a power source device, and a power source. It includes a wireless charging activation unit 300 that charges the mobile terminal 1 when a device approaches.

As described above, the cover unit 100 surrounds the mobile terminal 1 and is preferably made of polycarbonate (PC), polyurethane (PU), silicone, or a composite material including these. It is not limited to these materials, and may be formed of various other materials as long as they do not interfere with the performance of wireless charging.

The cover unit 100 includes an inner cover body 110 and an outer cover body 120 surrounding the inner cover body 110 .

Since the inner cover body 110 is formed to correspond to the shape of the mobile terminal 1, it can surround the rear and side portions of the mobile terminal 1. A mounting groove 111 is formed so that the first power source attachment part 200 can be mounted.

The outer cover body 120 is coupled to the inner cover body 110 behind the inner cover body 110 so as to surround the inner cover body 110 and is formed to correspond to the shape of the inner cover body 110 . there is

A first power source attachment part 200 is installed in the mounting groove 111 between the inner cover body 110 and the outer cover body 120 . In this embodiment, the first power source attachment part 200 is a metal plate that can be attached to a magnet, and the first power source attachment part 200 is formed and attached in a plate shape corresponding to the mounting groove 111 . is done.

In this embodiment, the outer cover body 120 is detachably attached to the outer side of the inner cover body 110 , and a first power source attachment part 200 is built in between the inner cover body 110 and the outer cover body 120 . It may be formed such that it is completely combined in a state and cannot be separated separately.

The wireless charging activation unit 300 activates the wireless charging function so that the power supplied from the power source device can be supplied to the battery unit of the mobile terminal 1 when the power source device approaches a location where wireless charging is possible. .

In FIG. 1 , the mobile terminal 1 is shown in the form of a smart phone in this embodiment, but the mobile terminal 1 is not limited to this, and is an information communication device having portability and mobility and capable of wireless charging. ie, mobile phones, tablet PCs, PDAs, smart watches, etc. can all be applied.

In addition, the mobile terminal case 10 of the present invention may further include a battery unit 400 detachably attached to the cover unit 100 and supplying power.

The battery unit 400 includes a charging unit 420 that supplies power for wirelessly charging the mobile terminal 1, an induction coil unit that transmits the power of the charging unit 420 to the mobile terminal 1 so as to be wirelessly charged, and the A second power source attachment part 480 coupled with the first power source attachment part 200 to be attached to the cover unit 100 is included.

The battery unit 400 includes a battery body 410 having a predetermined internal space to accommodate the charging part 420 and a coil mounting plate 460 coupled to the front part of the battery body 410 exposed toward the cover unit 100 . .

As described above, the battery main body 410 has a predetermined internal space to accommodate the charging part 420, and a light-emitting lamp 430 that can emit light through the power charged in the charging part 420 is formed on the rear part. . Generally, the mobile terminal 1 is provided with a lamp for photographing with a camera, and the lamp can be driven not only for photographing an image using the camera but also for performing a flashlight function used in a dark place. However, the lamp installed in the mobile terminal 1 requires the user to operate the mobile terminal 1 to drive an application installed in the mobile terminal 1 or to input a separate lighting command. hard to turn on.

In this embodiment, a light-emitting lamp 430 is installed at the rear of the battery body 410, and a lighting button 440 for turning on/off the light-emitting lamp 430 is provided at one side of the battery body 410, so that the user can If necessary, the light-emitting lamp 430 can be operated only by the lighting button 440 without turning on the mobile terminal 1 .

In addition, although not shown, a charging port is provided at the bottom of the battery body 410 to which a charging terminal of a wired charger for charging the charging unit 420 can be connected. Charging can be performed separately using a charger.

The coil mounting plate 460 is coupled to the front part of the battery body 410 to block the discharge of the charging part 420 to the outside, and the coil mounting plate 460 is provided with a charging coil 470 for wireless charging. ing.

In the present embodiment, a charging method for wirelessly charging the mobile terminal 1 is a magnetic induction method, and the charging coil 470 is built in the coil mounting plate 460 to generate a magnetic field. Preferably, the charging coil 470 is installed adjacent to the battery.

The coil mounting plate 460 is also provided with a second power source attachment portion 480 for coupling the battery unit 400 with the cover unit 100 . The second power source attachment part 480 of the present embodiment is composed of two permanent magnets positioned below the charging coil 470 on the coil mounting plate 460. The position of the second power source attachment part 480 is It corresponds to the formation position of the second power source attachment part 480 . Therefore, when the battery unit 400 is moved toward the rear of the cover unit 100, the second power source attachment part 480 and the first power source attachment part 200 are attached to each other by magnetic force and maintain a coupled state.

In particular, when the second power source attachment part 480 and the first power source attachment part 200 are placed in positions corresponding to each other, mutual coupling by magnetic force can be maintained, and the charging coil 470 and the mobile terminal 1 are placed in this position. Since the positions of the coils built in the coils correspond to each other, wireless charging can be performed. will also serve to guide the bonding positions where the are bonded to each other.

In addition, the battery body 410 includes a substrate 450 for forming the light emitting lamp 430, and the second power source attachment part 480 may affect the driving of the substrate 450. The source attachment part 480 is formed at a position not overlapping the substrate 450 .

In this embodiment, the first power source attachment part 200 is a metal plate and the second power source attachment part 480 is a magnet. 480 may be formed of a metal plate, or both may be applied with magnets.

FIG. 6 shows components provided for performing the wireless charging function, including the wireless charging activator 300 . The power receiving module 310 and the power transmitting module 320, which are additionally specified in this drawing, wirelessly receive power for the mobile terminal 1 when the battery unit 400 is closely coupled to the cover unit 100, and this to the mobile terminal 1.

That is, when the wireless charging function is activated by the wireless charging activation unit 300, the power receiving module 310 wirelessly receives power from the battery unit 400, and the power transmitting module 320 transmits the received power to the battery unit of the mobile terminal 1 or Send to power supply.

The power receiving module 310, the power transmitting module 320, and in some cases, the wireless charging activator 300 are integrated into one chipset (eg, SOC (System on chip), etc.) integrated in the cover unit 100. can be embodied as

As described above, the mobile terminal case 10 according to the present invention is normally used by a user by attaching only the cover unit 100 to the mobile terminal 1 and using it like a general terminal case. is required, the battery unit 400 is coupled for wireless charging.

At this time, the first power source attachment part 200 and the second power source attachment part 480 are used so that the battery unit 400 and the cover unit 100 are coupled. When the unit 480 is coupled so that the positions thereof correspond, the wireless charging activation unit 300 activates the function to perform wireless charging, and a magnetic field is generated while current flows through the charging coil 470 . Charging is done as soon as it is done.

In the mobile terminal case 10 of the present embodiment, the battery unit 400 can maintain a combined state with the cover unit 100 even when wireless charging is performed, so that the mobile terminal 1 can be continuously used. Charging can proceed.

The descriptions for the presented embodiments are provided to enable any person having ordinary skill in the art to make or implement the invention. Various modifications to such embodiments will be apparent to those skilled in the art of the invention, and the general principles defined herein may be applied to other implementations without departing from the scope of the invention. can be applied to the example. And, the present invention is not limited to the embodiments presented herein, but is to be construed to the fullest extent consistent with the principles and novel features presented herein.

1: mobile terminal 10: mobile terminal case 100: cover unit 110: inner cover main body 111: mounting groove 120: outer cover main body 200: first power source attaching part 300: wireless charging activation part 310: power receiving module 320: Power transmission module 400: Battery unit 410: Battery main body 420: Charging unit 430: Light emitting lamp 440: Lighting button 450: Substrate 460: Coil mounting plate 470: Charging coil 480: Second power source attachment unit

Claims (7)

a cover unit attached to the mobile terminal to protect the mobile terminal;
a first power source attachment part provided in the cover unit for realizing electrical connection with an external power source device capable of wirelessly charging the mobile terminal;
a wireless charging activator that charges a battery of the mobile terminal when the power source device and the mobile terminal are close to each other within a predetermined distance ;
The wireless charging activating unit includes a power receiving module for wirelessly receiving power from the power source device, and transmitting the received power to the mobile terminal when the power source device and the mobile terminal are close to each other within a predetermined distance. a power transmission module that transmits to the battery;
The cover unit includes an inner cover body formed in a shape corresponding to the mobile terminal so as to surround the rear part of the mobile terminal, and an inner cover body formed to surround the inner cover body. an outer cover body formed into a corresponding shape;
The case for a mobile terminal, wherein the first power source attachment part is formed between the inner cover body and the outer cover body . The mobile terminal case of claim 1, wherein the cover unit is made of polycarbonate (PC), polyurethane (PU), silicone, or a composite material including these. Equipped with a battery unit,
The battery unit includes a charging unit detachably attached to the cover unit behind the cover unit and supplying power for wirelessly charging the mobile terminal, and supplying power from the charging unit to the mobile terminal. a wirelessly chargeable transmitting induction coil portion; and a second power source attachment coupled with the first power source attachment to attach to the cover unit;
The second power source attachment part is formed at a position corresponding to the formation position of the first power source attachment part, and realizes electrical connection with the first power source attachment part. The mobile terminal case according to claim 1. Although the first power source attachment part and the second power source attachment part are provided at positions corresponding to each other in the cover unit and the battery unit,
One or both of the first power source attachment part and the second power source attachment part are formed of a magnet for magnetic coupling or a metal material coupled with the magnet. Case for mobile terminal described in . The battery unit includes a battery body having a predetermined internal space so that the charging part can be accommodated;
4. The battery of claim 3 , further comprising a coil mounting plate coupled to the front of the battery body exposed toward the cover unit and having the induction coil part and the second power source attachment part. Case for mobile terminal. The mobile according to claim 5 , wherein the battery body is provided with a light-emitting lamp that lights up through a charging power source of the charging unit, and a lighting button for turning on/off the light-emitting lamp. terminal case. The battery main body includes a board portion for mounting the light-emitting lamp,
The second power source attachment portion formed on the coil mounting plate is positioned so as not to overlap the substrate portion and the induction coil portion so as not to affect driving of the substrate portion and the induction coil portion. The mobile terminal case according to claim 6 , characterized in that:

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