EP3258811A1 - Mobile telephone casing with radiation protection - Google Patents

Abstract

The invention relates to a mobile telephone casing comprising a sliding cover, a receiving area for a mobile telephone and at least one guide element, said receiving area comprises a base wall, a first side wall and a second side wall opposite the first side wall, said sliding cover can be moved along the at least one guide element and is made of a shielding material for electromagnetic radiation. The invention relates to a mobile telephone casing, comprising a front cover, a receiving area for a mobile telephone, said receiving area comprising a base wall, a first side wall and a second side wall opposite the first side wall, said front cover has a number of layers, in particular at least one lower front cover layer and at least one upper front cover layer.

Description

 Mobile phone case with radiation shield

description

The invention relates to a mobile phone case, which has a protective effect against electromagnetic radiation,

Mobile phone cases are more commonly used in a variety of forms. Often these are flexible fabric or silicone sleeves. Such casings can provide some protection against impact. In particular, when it comes to the protection against pressure, have cases in the form of hard shells on significant advantages.

In addition to protection against pressure or impact, protection against cell phone radiation has gained in importance in recent years. In 201 1, mobile phone radiation was classified as potentially carcinogenic by the World Health Organization (WHO). Numerous studies have appeared by the time of the application which suggest a cytotoxic effect, for example by the formation of reactive oxygen species (eg singlet oxygen). There is evidence of an increased health risk for frequent callers and children. Although there is currently insufficient knowledge to be able to conclusively assess the risk, the Federal Office for Radiation Protection recommends precautionary measures in order to minimize the risk in this regard. In particular, it is recommended to keep cell phone talk short and use landline phones instead. It is also recommended to use a large distance between the head and mobile phone and to use mobile phones with low SAR values. Furthermore, for example, handsets have been developed for handsets that do not emit when the handset is on the base station. On mobile phones, however, such an approach is not transferable without significant limitations of grand functions, as they should be ready to send and receive on the go. Also, the above-mentioned approach provides only limited remedy. The largest radiation exposure results when telephoning.

Also, it is often not possible without a mobile phone altogether. Business people, in particular, usually have to remain available on business trips. Even today smartphones are used for a variety of purposes (card services, online access, emails, etc.), so that a waiver would be associated with significant restrictions.

For this reason, mobile phone cases have been developed that completely or partially shield the radiation.

DE 101 11 1063 A describes a telephone case for a cordless telephone with an interior that is both soundproof and radio-proof. The phone case may be a rigid housing or a flexible enveloping body. Such a complete and comprehensive shielding has the disadvantage that the accessibility is not guaranteed.

WO 2001 1/038517 relates to a rubber-elastic Abscuirmhüüe, the back is made transparent to radiation. The front is flexible and shields electromagnetic radiation.

DE 199 29 077 A1 describes a silver fabric for the shielding of electromagnetic radiation.

DE 196 08 189 A1 describes a cover for mobile phones made of a material which shields electromagnetic radiation. The antenna usually remains free and the shielding is done by metal filaments. The US 8, 71 8279 B l discloses a bag for a mobile phone with a hinged lid.

The front shields electromagnetic radiation partially and has openings to ensure the sound transmission.

EP 1 526 603 A I discloses an upper and a lower part of a mobile phone shell, the upper part being radiation-permeable.

CN 203388421 describes a radiation protection cover with a hinged top and bottom.

CN 201556426 concerns a copper container for charging mobile devices. Again, the radiation is at least partially retained.

DE 10 2007 010 657 describes a pocket for mobile radio equipment. This has an inner and an outer pocket, the outer pocket is shielded only on one side against radiation. This has the advantage that a complete shielding or telephoning-as desired-is possible.

A disadvantage of the prior art arises from the fact that the closure in a bag or a hinge assembly does not close completely secure. Even a narrow gap can have adverse effects on radiation protection. One solution is to make a flexible bag significantly longer than the mobile phone (see DE 10 2007 010 657). However, such a bag can provide no protection against a pressure load.

Another disadvantage of the aforementioned radiation protection measures is that usually two hands are needed to open the bag or the bag. For example, it is not easy to open a hinge-bound lid without using a second hand. In particular, since mobile phones are usually used in the majority of cases when the person concerned is on the move and may not have both hands free (for example, because a suitcase or a travel bag is in the other hand), this represents a significant problem. The object of the invention is therefore to provide a protective cover that effectively keeps radiation away from the head and body while telephoning. Furthermore, an optimal school impact against physical influences such as impact or pressure should be offered. Also, the protective cover should be open with one hand. Furthermore, a quick and easy access to the control buttons and possibly the touch-sensitive display of the cell phone to be enabled.

The object is achieved by a mobile phone case (also called first embodiment), comprising a sliding cover and a receiving area for a mobile phone and at least one guide element, wherein the receiving area has a bottom wall, a first side wall and a second side wall opposite the first side wall, wherein the sliding cover is slidably mounted along the at least one guide element and comprises a shielding material for electromagnetic radiation. The sliding cover regularly represents the front cover of a mobile phone case according to the invention.

It has surprisingly been found that a Schiebedeckcl is particularly well suited to shield mobile phone radiation effectively. Furthermore, it has surprisingly been found that such a sliding lid can be opened particularly easily, although shielding material for electromagnetic radiation is included. Protection against impact and pressure is also guaranteed.

A mobile phone case according to the invention is a resealable container for the mobile phone. Preferably, the mobile phone (also: mobile phone) in the closed state is substantially completely enclosed by the mobile phone case. Essentially completely means in this context that this case quite smaller openings z. B. for the connections and possibly lateral control buttons of the mobile phone can remain free.

The receiving area is in a preferred embodiment, a hard shell, which is closable with the sliding cover. A hard shell is, in contrast to flexible textile or silicone sleeves, deformable only to a small extent. Hard shells for the backs of mobile phones are well known to those skilled in the art. The receiving area has an interior for receiving the mobile phone. Inside or inside means within the meaning of the present inventions in the direction of this interior. Outside or outside, however, is the opposite (outer) side of the receiving area.

In a preferred embodiment, the first side wall has a first guide element and / or the second side wall has a second guide element, wherein the sliding cover is mounted in each case. The respective guide element can be present on the inside or outside of the corresponding side walls. In a preferred embodiment, the first and second guide element are on the inside.

In an alternative expedient embodiment, a sliding cover engaging with the first and / or second side wall, preferably encompassing, has at least one third and one fourth guide element. Said side walls are preferably each in the. mounted third and fourth guide element, wherein the side wall preferably comes to the outside with the guide element to the plant.

Preferably, the sliding derailleur has a first and a second opposite second edge portion, wherein the first side wall of the first edge portion and the second side wall is associated with the second edge portion, in particular wherein the first side wall adjacent to the first edge portion and the second side wall adjacent to the second edge portion can be arranged is.

In this case, it is particularly preferred if the first edge section is mounted in the first guide element and the second edge section is mounted in the second guide element. Alternatively or additionally, it is preferred if the first edge section comprises the third guide element and the second edge section comprises the fourth guide element.

In a further advantageous embodiment, the bottom wall has at least a fifth guide element. Alternatively or additionally, it is conceivable that the sliding cover is designed umgrei end and has at least a sixth guide element, which interacts with the bottom wall. The sliding cover is in the said two Embodiments configured embracing, so that it comes at least partially with the bottom wall to the plant. In an expedient variant of said embodiment, the first and second side wall are free. ie they are not enclosed by the sliding cover and also have no first or second guide elements. It can be provided in particular that the sliding cover in this embodiment, a third side wall engages around (the sliding cover as a whole would be preferably designed substantially U-shaped and would embrace a sehmal side of the receiving area). The fifth and / or sixth guide element is preferably a groove or rail on or in the bottom wall or on or in the region of the sliding cover which comes into contact with the bottom wall. An advantage of a fifth or sixth guide element is that lateral guide elements are dispensable and in particular the receiving area can be grasped by a user directly at the sides in order to remove the sliding cover.

In a further expedient embodiment, one of the above-described first and second guide elements of the first and second side wall is combined with one, in particular opposite, third or fourth guide element of the sliding cover. For example, the sliding cover may be mounted on one side in a groove of the first side wall and engage around the second side wall opposite.

It is also conceivable according to an embodiment to provide a first and a second and a third and a fourth guide element. In this case, for example, a sliding cover can engage around the first and second side wall and, in addition, a groove can be provided in said side walls in order to improve the grip. Combinations between a first and second and a fifth or sixth Führungselcment are conceivable. The implementation of several guide elements improves the safety of the sliding cover.

If third and fourth guide elements are provided, it is particularly preferred if the sliding cover surrounds the receiving area and further guide elements, in particular guide grooves, are included on the underside of the receiving area. Usually, the receiving area is closed by the sliding cover, which is arranged in a suitable embodiment with respect to the bottom wall, Preferably, the bottom wall is arranged substantially parallel to the sliding cover. For the purposes of the present document, essentially parallel is to be understood as meaning that the average relative orientation of the two elements concerned does not deviate from a parallel orientation by more than 10 °, in particular not more than 5 °, preferably not more than 1 °.

The first side wall is opposite the second side wall. Preferably, the first and second sidewalls are mirror-symmetrical to each other, i. the first side wall corresponds to the mirror image of the second side wall and vice versa. In one embodiment, the first side wall has a first guide element for the sliding cover, wherein said first guide element is preferably mounted on the inside. The inside of the first side wall lies in the direction of the opposite second side wall and faces the interior of the receiving area. The second side wall preferably has a second guide element for the sliding cover, which is preferably also arranged on the inside.

In a further embodiment, the third and fourth guide element is formed by a sliding cover which surrounds the receiving region, wherein the first and second side wall are preferably mounted so as to be displaceable respectively in the third and fourth guide element of the sliding cover. It can be provided that the first and second side wall additionally have a first and second guide element. This would then preferably be on the outside (i.e., not facing the interior of the receiving area).

In a particularly preferred embodiment, the sliding lid has four edge sections, wherein at least two, in particular the first and second edge section, of the at least four edge sections are L- and / or U-shaped. In this case, it is preferable if the said L and / or U-shaped edge sections include the third and fourth guide sections. include or train. Preferably, the receiving area is slidably mounted in the resulting L and / or U-shaped recesses.

In a further embodiment, a stop element is provided. This is preferably arranged on a shorter third or fourth andabsclmitt. Preferably, the sliding cover has two longer (first and second edge portion) and two shorter edge portions (third and fourth edge portion) and is in particular in its basic form rectangular with two or three L- and / or U-fönnigen edge portions, the stop element in particular has the function to stop a sliding movement of the sliding cover along the at least one guide element.

L- or U-shaped edge portions are preferably if at least a partial length of the edge, in particular at least 50%, preferably at least 70%, particularly preferably at least 85% of the total length of the edges on the corresponding side wall or in the case of Ul ^' onn turned over to the bottom wall. Preferably, the corners are rounded.

The sliding cover is slidably mounted in the two guide elements. By the

Guide elements, the sliding direction is specified. Preferably, it is also prevented by the guide elements that a gap is formed through which radiation could penetrate.

Furthermore, the sliding lid on a shielding material for electromagnetic radiation. Electromagnetic radiation in the context of the present invention is mobile radio radiation, i. in particular radiation of the frequencies 900 MHz, 1800 MHz and 2600 MHz, preferably 1800 MHz. For the purposes of the present invention, a shielding material preferably shields the predominant part (> 50%), in particular 65%, of the mobile radio radiation, ie. <50% (or in particular <35%) of said radiation is transmitted.

In a particularly preferred embodiment, the Aufnahmebeieich a third and one of the third side wall (also upper side, in particular at the upper end) opposite fourth side wall (also underside, in particular at the lower end), which preferably each connecting the first and second side wall. It is therefore expedient if the third and fourth side wall is respectively connected to the first and second side wall. It is also advantageous if the first, second, third and fourth side wall are connected to the bottom wall. The above measures help to stabilize the first and second sidewalls. This also secures the sliding cover within the guide elements in addition. In addition, the shielding properties of the phone case are improved.

Furthermore, it is advantageous if the third and fourth side wall each have a smaller maximum extent than the first and second side wall. This ensures a secure hold of mobile phones of conventional design in the phone case.

In an advantageous embodiment, the first side wall is oriented substantially parallel to the second side wall and / or the third side wall is oriented substantially parallel to the fourth side wall. Furthermore, it is advantageous if the dimensions of the sliding cover substantially correspond to the dimensions of the bottom wall. Substantially corresponding dimensions are to be assumed if the lengths and the widths of two surfaces do not differ from each other by more than 20%, in particular not more than 10%. Preferably, the dimensions of the first side wall also substantially correspond to the dimensions of the second side wall and the dimensions of the third side wall substantially correspond to the dimensions of the fourth side wall.

It has also proved to be advantageous if the transitions between the side walls and / or the transitions between the side walls and the bottom wall are rounded. This reduces the risk of injury and facilitates the operation.

A guide element in the sense of the present invention is preferably a mechanism or a mechanism of interlocking components or a recess for interlocking components, in particular housing parts, which determine a, in particular linear, movement or a movement sequence. It is particularly preferable if the at least one guide element comprises or represents a guide groove or groove. The sliding cover preferably slides through the guide groove, wherein the sliding cover itself or a tongue of the sliding cover is mounted in the guide groove. By storing the sliding cover analogous to the spring-groove principle ensures that electromagnetic radiation can not escape in these areas. So far known from the prior art Handyetuis, take into account column on the front and side walls usually not sufficient, which regularly worsens the shielding properties.

It is further preferred if said guide groove, in particular on the inside. is fluted. A serrated groove is, preferably on the inside, provided with parallel grooves or ribs (ridges). It has been shown that this increases the frictional resistance. This improves the grip of the sliding cover in the closed and open positions as well as in intermediate positions.

In an alternative embodiment, the at least one guide element comprises or represents a metal guide and / or guide rail. Here, the slide cover is slidably connected to the metal guide and / or guide rail and the metal guide and / or guide rail preferably automatically from a first to a second Position movable. In an embodiment, the guide rail is or comprises a sliding or rolling guide. In a further embodiment, the sliding cover or the side walls on a metal guide and / or guide rail. An advantage of metal guides and / or guide rails is the particularly smooth mounting of the sliding cover.

In a further embodiment, it is preferably possible to secure the sliding cover in the open or closed position, in particular by a fuse. Preferably, it is a mechanical security, in particular a Einrastsicherung. In one embodiment, the fuse is a latching element, preferably made of plastic. In this case, it can be provided in particular that a Solder the Einrastelcmcnt triggers, preferably by pressing the latching element out of a recess.

It is particularly preferred if the metal guide and / or guide rail has an automatic opening, so that a manual opening is not required. Preferably, a triggering device, in particular a push button, on a side wall of the receiving area are actuated, so that the sliding cover of the, in particular automatically closed position (this preferably corresponds to the position in which the sliding cover obscures the front of the mobile phone) in an open position (in which the front of the mobile phone is not covered for the most part) slides. Preferably, the automatic opening is powered by a biased mechanism, in particular a spring mechanism. In this embodiment, it is preferred that at least one spring be tensioned (e.g., by compression) by manually closing the sliding lid. In a particularly preferred embodiment, the mobile phone case comprises a push button, in particular on a side wall, wherein the push button is in operative connection with a, in particular biased, automatic opening, wherein the automatic opening automatically the sliding cover, i. preferably without further crane action of the user, moved from a first to a second position. In one embodiment, the prestressed state is again produced by the user by closing the sliding cover under the action of force, for example counter to a spring tension, wherein preferably the safety device, in particular safety lock, stabilizes the pretensioned state.

It is advantageous if the side walls, but at least one side wall, comprise shielding material for electromagnetic radiation. This increases the radiation protection. In a preferred embodiment, the first and second side walls comprise a shielding material for electromagnetic radiation. In a further preferred embodiment, the third and / or fourth side wall also comprise a shielding material for electromagnetic radiation. In another embodiment, at least one side wall, in particular at least two side walls, shielding material in the region of the guide groove or groove.

Shield attenuation is a dimensionless measure that quantifies the effectiveness of shielding. In a preferred embodiment, the sliding cover has a screen attenuation value of at least 5 dB, in particular at least 10 dB and preferably at least 15 dB, at 1800 MHz and / or at 2600 MHz. Preferably, the screen attenuation value is determined according to MIL-STD 285. It is particularly preferred if the screen attenuation value of the mobile phone case as a whole sliding cover side at 1800 MHz and / or at 2600 MHz is at least 5 dB, in particular at least 10 dB and preferably at least 15 dB. The values mentioned are suitable for considerably reducing the risk for the user.

Advantageously, the receiving area and / or sliding lid is proportionate, in particular predominantly, made of one, in particular thermoplastic, plastic. Preferably, it is a plastic having a Shore D hardness of at least 50, in particular at least 70, according to ISO 868. It has been found that in this way the susceptibility to scratches on the surface of the receiving area and / or the sliding cover is reduced , Furthermore, the sliding cover is particularly well secured and also achieved a suitable protection against shock and pressure. Surprisingly, such "hard" plastics can also be combined with the shielding materials according to the invention.

In a further embodiment, the receiving area and / or Schiebedeckcl proportionately, in particular predominantly, made of a carbon fiber reinforced plastic (KFK). It has been shown that a particularly good protective effect can be achieved in this way. Mobile phone cases comprising KFK are lighter and stiffer than conventional materials. Surprisingly, such carbon fiber reinforced are suitable

Plastics (KFK) also in conjunction with a shielding material for electromagnetic radiation. Advantageously, the receiving area and / or sliding cover, in particular as a shielding material, comprises a metal. In a particularly preferred. Embodiment is a metal fabric, ie a metal-containing tissue and in particular a fabric consisting of metal. It is advantageous if the electrical conductivity at 25 ° C is greater than 3,000,000 S / m. Instead of or in addition to a metal mesh, in one embodiment it is also possible to coat the receiving area and / or sliding cover with a metal, in particular silver, copper, gold or aluminum. It has been found that metals and in particular metal meshes and metal coatings of the abovementioned metals are associated with good shielding properties. In particular, metal fabrics having the above properties are suitable for the present purpose.

Preferably, the metal used is silver, copper, gold or aluminum, with silver and copper, especially silver, being particularly preferred. Even alloys with one of these metals are conceivable. Preferably, it is an alloy comprising a combination of the above metals.

For reasons of cost, it may also be advantageous in one embodiment to manufacture the metal fabric partially or completely from a first material, in particular metal, and to silver it, to copper it, to gild it, or to coat it with aluminum.

In a particularly preferred embodiment, silver-coated threads or threads of silver are used.

In an advantageous embodiment, the mobile phone case comprises less than 50 g, in particular less than 10 g, preferably less than 5 g and particularly preferably less than 2 g of metal, in particular silver.

In a further, very particularly preferred embodiment, the Schlelegeekkel plastic and metal, wherein the metal is preferably present over the entire sliding deck, in particular evenly distributed. Particularly preferably, the metal is in the form of a metal coating, a, embedded in the plastic or applied metal fabric or in the form of embedded in the plastic metal threads. The combination of metal and plastic is particularly suitable for protecting against mobile phone radiation as well as against impact and pressure.

Preferably, sound is not or only insignificantly insulated by the sliding cover. In a preferred embodiment, the sliding lid has a window which is closed only by a metal fabric. This has the advantage that sound can penetrate, although electromagnetic radiation is still effectively retained.

It is preferred that the bottom wall is partially or completely, in particular predominantly, radiation-permeable. Preferably, the bottom wall comprises no metal, in particular not in the form of a metallic coating or a metal fabric. In a preferred embodiment, the bottom wall comprises plastic and / or metal-free textile. Preferably, the screen attenuation value (at 1800 MHz and / or at 2600 MHz) is in the range in which the receiving and transmitting antenna of the mobile device is found and / or for the entire bottom wall is less than 10 dB. in particular less than 5 dB, preferably less than 3 dB and particularly preferably less than 2 dB. Due to the one-sided shielding with the sliding lid towards the body or head, the function of the telephone, i. in particular the reception, not or only insignificantly impaired, especially if the bottom wall does not have a shielding effect.

In a suitable embodiment, the sliding cover has a maximum extension which is greater than the average distance between the third and fourth side walls, in said embodiment the sliding cover preferably extends from the third to the fourth side wall and beyond. It has proved to be advantageous for reasons of effective schicbedeckelseitigen shielding against radiation when the sliding cover protrudes beyond the third and / or fourth side wall. In particular, a gap is avoided. In an advantageous embodiment, the third side wall have a groove for receiving one end of the sliding cover. In a further embodiment, the third and / or fourth side wall are below (ie in the direction of

Bottom side) of the sliding cover, wherein the sliding cover projects beyond the upper end of the third and fourth side wall.

In an expedient form from lührungs form the sliding cover is at least partially flat, i. it has no curvature in the section. It may be particularly advantageous when the sliding cover is substantially flat. Substantially flat means that at least 60%, in particular at least 75%, preferably at least 90% of the sliding cover have no or only slight, in particular production-related, curvatures. Such an embodiment of the sliding cover has proven to be particularly space-saving and stable. Furthermore, it is thereby simpler in terms of production technology to implement the desired shielding properties.

In a further embodiment, the sliding cover is configured asymmetrically in the longitudinal direction. Preferably, the longitudinal direction in the direction from the third to the fourth side wall, in particular substantially orthogonal to the first and / or second side wall, By such an asymmetric configuration ,, it is for example possible to round off the sliding cover in the direction of the third or fourth side wall or there Insert stop element. This also has the advantage that radiation is shielded even more effective. In a particularly preferred embodiment, the sliding cover at a short edge section, in particular in the region of a stop element, an L-shaped or U-shaped form, one leg of the L ^"shaped mold is preferably lower than the second leg. This is advantageous For example, to additionally protect terminals located at one end of the mobile phone, such protection may be advantageous in particular if the third and / or in particular the fourth side wall has openings for such connections Impurities are prevented by the above-described embodiments of the sliding cover. As indicated above, in some embodiments, it is preferred for one or more sidewalls to have apertures in the form of passages. In particular, openings on the third and / or fourth side wall are preferred. Said openings provide access to the ports or top-mounted control buttons. In a further embodiment, it may also be appropriate to attach more openings on the first and / or side wall _» to access, for example, lateral control buttons.

Larger openings in the bottom wall are conceivable and preferred according to the invention. As a rule, the bottom wall does not have to shield electromagnetic radiation, so that openings do not have an adverse effect. In a preferred embodiment, the bottom wall has an opening. This opening may be advantageous, for example, to give the lens of a camera of the mobile phone a free field of view.

In one embodiment, the sliding cover has an opening or marginal recess. The opening is preferably spaced from at least one edge of the sliding cover, wherein the distance is less than 10 mm, in particular less than 5 mm. The peripheral recess is preferably located at a short end of the sliding cover, in particular at the upper end of the sliding cover, which preferably in the closed. Position at the top of the receiving area comes to rest. This has the advantage that in the open position, a triggering device or a triggering mechanism, in particular a push button, at the bottom of a mobile phone is better accessible.

In a preferred embodiment, the sliding cover is mounted in a bearing of the guide elements and removable from this storage. In a further embodiment, the sliding cover can be brought to rest with the bottom wall. Particularly preferred is an embodiment in which the sliding cover is removable and fixable in abutment with the bottom wall. The embodiments mentioned allow largely unrestricted access to a touch-sensitive display of the mobile phone, without the ski cover disturbing. In a further embodiment, the third and fourth side wall have an average length, a middle width and an average thickness, wherein the average width of the third and fourth side walls is not identical, where length>width> thickness, the average length extends preferably from the first to the second side wall. The average thickness relates to the material thickness of the preferably flat side wall. The middle width preferably extends from the bottom wall in the direction of the sliding cover. Preferably, the third side wall has a larger average width than the fourth side wall. The wider third sidewall can be used to stop the top lid sliding cover while the fourth sidewall is low enough for the sliding lid to pass over.

In a preferred embodiment, at least one guide element ends spaced from one end of the first sidewall and / or second sidewall. Preferably, it is the end which faces the third side wall (upper end of the first and second side wall, respectively). Alternatively or additionally, said guide element, in particular at the upper end, is preferably bounded by the third side wall. The structural measures mentioned cause the sliding cover can be moved from its initial position in the closed state only in one direction. This is preferable to reduce the risk of accidental release of the sliding cover. Furthermore, it is ensured that optimal radiation protection is ensured.

In a preferred embodiment, the sliding cover has at least two opposing tongues, wherein a first tongue is displaceably mounted in the first guide element and a second tongue is displaceably mounted in the second guide element. The guide elements of the sliding cover are preferably grooves that mate with the tongues according to the tongue and groove principle, wherein the grooves and tongues are each slidable against each other. Tongues make it possible to narrow the grooves and to secure the sliding cover.

In a further expedient embodiment of the sliding cover is connected via a flexible unit with the receiving area, wherein the flexible unit preferably a Hinge, textile and / or rubber-elastic plastic is. Alternatively or additionally, it may be advantageous if the sliding cover has a projection which prevents complete removal of the sliding cover from the Fühningselement. The measures mentioned are advantageous in several respects. The connection of the sliding cover via a flexible unit or a Vorsprang ensures that the sliding cover can not be largely detached and lost from the receiving area without resistance. Furthermore, the fastening means allow the sliding cover to continue to move slidably, so do not interfere with the basic function. It is also conceivable to attach the sliding cover so that it can nevertheless be brought to the bottom side to plant.

In a further embodiment of the mobile phone case according to the invention, the sliding cover is multi-shelled and in particular comprises at least one, in particular inherently rigid, lower sliding cover layer and at least one, in particular inherently rigid, upper sliding cover layer.

The object underlying the invention is further solved by a mobile phone case (also called second embodiment), comprising a front cover and a receiving area ^' for a mobile phone, wherein the receiving area has a bottom wall, a first side wall and a second side wall opposite the first side wall "Wherein the front cover is set up and designed to enter into the receiving area, in particular with the first and / or second side wall, a, in particular reversibly detachable, connection and / or wherein the receiving area, in particular the first and / or second sides wall, is furnished and designed to enter with the front cover, in particular reversibly releasable connection, and wherein the front cover is formed mehrschalig, in particular at least one, in particular inherently rigid, lower front cover layer and at least one, in particular inherently stiff, upper front cover layer comprises. With the help of the second embodiment of a mobile phone shell according to the invention, it is possible to increase the stability of this phone case again. Preferably, the lower and the upper front cover layer are so-called inherently rigid cover layers, ie to layers that maintain their shape independently or are dimensionally stable. However, it is also possible to use such lower and upper front covers, which are only when combined with each other dimensionally stable or intrinsically stiff. The same applies to the previously described lower and upper sliding cover layers. Furthermore, it is possible to produce the lower front cover layer as standard and to manufacture the upper front cover layer according to individual specifications, for example by means of rapid prototyping methods, in particular selected from the group consisting of lithographic, in particular stereolithographic, laser sintering methods , Layer Laminate Manufacturing, Thermoj et Process, Fused Layer Mode, 3 D-Print, DLP Mask Technique, and 3D PIott. Preference is given here 3 D-print process, ie the 3 D printing technique used. The same applies to the sliding cover formed from the lower and upper sliding cover layer.

Of course, the first and second embodiments of the invention may also be combined with each other.

In an expedient embodiment, it can further be seen that the Handyhül le according to the invention according to the first and according to the second embodiment further comprises at least one flexible layer, in particular at least two superimposed flexible layers, between the lower and the upper sliding or front cover layer, wherein the at least a flexible position substantially over the entire surface between the lower and the upper sliding or front cover layer is present. The flexible layer may in this case represent or comprise a nonwoven, knitted, knitted or woven layer, for example in the form of a nonwoven, knitted fabric or woven fabric of metal threads or containing metal threads or a nonwoven, knitted fabric or woven fabric with a vapor-deposited metal layer. Suitable metals are silver, copper and gold. Particularly preferred flexible layers are radiopaque, ie substantially impermeable to electromagnetic radiation. For this purpose, for example, the above-described shielding material for electromagnetic radiation can be used. Is between the at least one lower sliding or front cover layer and the mini- at least one upper sliding or front cover layer the previously described radiopaque equipped flexible layer, these covers could be regularly designed to be radiation permeable. By inserting the radiopaque equipped flexible layer is generally a sufficient electromagnetic

Shielding achieved. in an alternative Ausfülirungsform the first and the second embodiment of the mobile phone case according to the invention may be provided that the at least one lower sliding or front cover läge and / or the at least one upper sliding or front cover layer at least one radiopaque Bcschichtung, in particular comprising or consisting of the Shielding material, which is preferably present between the lower and upper sliding or front cover layer.

It has proved to be very expedient that the at least one lower sliding or front cover läge and / or the at least one upper sliding or front cover layer, in particular the at least one upper sliding or front cover layer can be produced by means of rapid prototyping method, in particular selected from the group consisting of lithographic, especially stereolithograii see, process, laser sintering process., Layer Laminate (Layer Laminate Manufacturing), Thermojet, Fused Layer Modeling, 3D-print , D LP mask technique method and 3 D Plott method. Preference is given here 3 D-print process, ie the 3 D printing technique used. In this way, an adapted to individual requirements mobile phone case can be provided. Such a mobile phone case can be made, for example, at the point of sale according to the wishes of the customer. In a further embodiment, it has proved to be very useful to resort to such a mobile phone case according to the invention, in which the sliding or front cover and / or the at least one first sliding or front cover layer and / or the at least one second sliding or front cover layer at least one flexible Layer and / or the at least one radiation-impermeable coating at 900 MHz, 1800 MHz and / or at 2600 MHz a screen attenuation value of at least 5 dB, in particular 10 dB and preferably 15 dB. It can also be provided that the receiving area and / or the sliding or front cover and / or the at least one first sliding or front cover layer and / or the at least one second sliding or front cover layer proportionately, in particular apart from the shielding, predominantly, from a plastic with a Shore D hardness of at least 50, in particular at least 70, according to ISO 868 and / or made of a carbon fiber reinforced plastic (KFK) is made.

A particularly expedient embodiment of the mobile phone case according to the invention further provides that the sliding cover or the front cover, in particular the lower Frontdcckel- location and the upper front cover läge at substantially congruent position, an opening or recess (also called first opening or first recess) and set designed to allow a manual actuation of a triggering device or a triggering mechanism, in particular a Druckmobs, a mobile phone to have.

Furthermore, it can be provided in a further expedient embodiment that the sliding cover or the front cover, in particular the lower front cover layer and the upper front cover layer at substantially congruent position, an opening or recess (also called second opening) and adapted to a manual operation an unlocking device or an e ntspe rrmec hanismu s of a mobile phone to have.

Furthermore, it can be provided in a further advantageous embodiment that the Schiebedeckei or the front cover, in particular the lower front cover layer and the upper front cover layer at substantially congruent position, an opening or recess (also called third opening) set up and designed to a section of the display of a mobile phone.

In this case, such a mobile phone casing according to the invention are particularly preferred in which the first opening comprises a rubber-elastic material or is filled with it and / or that the second opening comprises a material, in particular rubber-elastic material, or is filled with this, which is electrically conductive, and / or that third Opening a transparent material, in particular plastic material, has or is filled with this.

In a suitable embodiment, the material filling the second opening contains graphite.

In addition, such mobile phone cases according to the invention are particularly advantageous with regard to adequate radiation shielding, in which the material which fills the first, second and / or third opening, in particular with one or the shielding material for electromagnetic radiation, is radiopaque.

In this case, it can be provided, for example, that the material which fills the first, second and / or third opening, in the opening of the lower and / or upper sliding cover, in particular the upper sliding cover, or in the opening of the lower and / or upper front cover layer, in particular the upper front cover layer, is present.

Furthermore, the mobile phone cases according to the invention in an expedient embodiment are distinguished by the fact that the sliding cover or the lower sliding cover layer and / or the upper sliding cover layer or the front cover or the lower front cover and / or the upper front cover layer, containing the material in the first, second and / or third. Opening is made by means of 2 - injection molding.

The present invention is characterized by a sliding lid, which is decisive for Stralilenschutz. If the user wants to operate a touch-sensitive display, he can move the sliding lid easily and in particular one-handed, so that the display is released. The bottom side is preferably not or only partially provided with a material that retains the radiation. In particular, it is preferred if the bottom wall does not comprise a shielding material. Rather, there is a largely unhindered transmission of the radiation. The antennas of the usual mobile radio models are internally installed on the back. This has the consequence that the mobile radio radiation can pass unhindered to the rear side (bottom side), but is screened off to the front (sliding cover side). Thus, the body of the user is protected, while the func- oii the phone is not restricted. It is essential that the sliding lid in contrast to conventional solutions easier opening and optimized

Radiation protection allows. The guide elements preferably leave no gap, which would reduce radiation protection.

Further features and advantages of the invention will become apparent from the following description in which preferred embodiments of the invention are explained by way of example with reference to schematic drawings. Showing:

Figure 1 is a perspective view of a sliding cover a) and a receiving area b) according to the invention;

FIG. 2 shows schematic views of the first side wall of the illumination system for embodiments with different sliding covers;

Figure 3 is a schematic cross-sectional view of two embodiments of the receiving area including sliding cover;

FIG. 4 shows a schematic cross-sectional view of two further embodiments of the invention

 Receiving area including sliding lid with L- or U-shaped edge sections;

5 shows a schematic cross-sectional views of the longitudinal side of the receiving area together with the sliding cover in two different arrangements of the sliding cover:

Figure 6 is a perspective view of a sliding lid;

Figure 7 is a perspective view of the interaction of a encompassing sliding lid according to the invention with a Aufnahmebercich and

Figure 8 is a schematic cross-sectional view of the second embodiment of a mobile phone case according to the invention.

Figure 1 shows in view a) a sliding cover 2 with two opposite tongues 13. View b) of the figure! shows the associated Aiifnahmebereich 3 with a bottom wall 10, a first side wall 5 and a second side wall 6 opposite the first side wall 5, wherein the first side wall 5 has at least one first guide element in the form of a guide groove 9. The phone case further includes a third side wall 7 and a fourth side wall 8 opposite the third side wall 7. The fourth side wall 8 includes an opening 12 for a charging cable. The second side wall 6 includes an opening for a headphone cable. The sliding cover has a first edge portion 20, a second edge portion 21, a third edge portion 23 and a fourth edge portion 22.

Figure 2 shows in views a) to d) are schematic representations of the first side wall 5 of the receiving area and various sliding cover 2 (each represented by dashed lines). It is also the third Seitenwaiid 7 and the fourth Seitenwaiid 8 and the bottom wall 10 is shown. Furthermore, the openings for charging cable and earphone cable are shown (openings 12, 1 1). In view a) a simple, flat ski cover 2 is reproduced, which does not protrude beyond the fourth side wall 8. In view b) an L-shaped sliding cover 2 is reproduced. This obscures the opening 12. View c) shows a sliding lid 2 with a curved L-shape. Also, the fourth side wall 8 is curved in this embodiment. In view d) is a U-shaped sliding cover play, with a leg of the U-shape is shortened. Again, the opening 12 is covered by the sliding cover 2. The Ausführungsforrnen of Figure 2 a) to d) have in common that the sliding cover does not surround the Aufnahmebercich.

Figure 3 shows a schematic cross-sectional view of an embodiment orm of the receiving area including sliding cover 2. The first side wall 5 and the second side wall 6 are clearly visible. The figure 3 can be seen how the tongue 13 interacts with the groove 9 (analogous to the spring-groove principle). The tongue 13 can slide in the groove 9. Figure 3 b) shows an analogous to Figure 3 a) view, wherein the first side wall 5 and the second side wall 6 are formed arched. This has advantages in terms of space for Mobilclcfonc and for the stability of the phone case. Furthermore, the risk of injury is reduced because edges are avoided. Figure 4 a) shows a schematic cross-sectional view of another embodiment of the receiving area including sliding cover 2. The first side wall 5 and the second side wall 6 of the receiving area are clearly visible. The sliding cover 2 surrounds the side walls 5 and 6, wherein a portion 16 of the sliding cover comes to rest on the bottom wall. The edge portion is U-shaped, wherein a shorter leg of the U-shape is formed by the portion 16, while the opposite longer leg is formed by the over the opening of the receiving portion extending portion of the sliding cover 2. By the U-shape of the sliding cover 2 forms a recess in which the first and second side wall is slidably mounted. Said recesses thus form the third and fourth guide element of the sliding cover.

FIG. 4 b) shows an alternative embodiment in which the sliding cover 2 is designed to have a substantially L-shaped edge, wherein the opposite limbs of the two I. -shaped edge portions each having a spring 17, which engage in a groove 9 mounted on the outside of the first and second side wall.

FIG. 5 shows, in the views a), a representation similar to FIG. 2, view d). In view a) of Figure 5, the mobile phone 14 is shown. At its front and back, the mobile phone is protected by the bottom wall 10 and the opposite sliding cover 2. Laterally it is enclosed by the side walls 5, 6 and 7, 8, wherein in Figure 5, only the side walls 7 and 8 are shown. Figure 5 shows in view a) the sliding cover in its rest position: the mobile phone is completely enclosed by the ί Landyhül le. In view b) of Figure 5, the sliding deck I was removed and brought to the bottom side 10 to the plant. The touch-sensitive display 1 5 of the mobile phone 14 can be operated in this state. The sliding lid is U-shaped (with a shortened leg) and it can be fixed on the back over the shortened leg in the guide groove 9 (not shown),

FIG. 6 shows a perspective view of a sliding cover 101 encompassing the receiving region. The sliding cover 101 has a front side 102 which is delimited by four edge sections 105, 106, 108, 109. The edge sections 1 06, 1 08, 1 09 are U- shaped, wherein the edge portion 108 forms a third Führungsclement in the form of a guide groove 103 and the edge portion 109 forms a fourth guide element in the form of a guide groove 104. The sliding cover has a stop element 107 on the edge portion 106, which is designed and eigerichtet to limit the freedom of movement of the receiving area along the guide grooves 103. 104 in one direction. If the receiving region is mounted in the stop element 107, a displacement of the receiving region is possible substantially only in the direction of the edge section 105.

Figure 7 shows a perspective view of a sliding cover according to the invention with the front side 102 analogous to Figure 6. The receiving portion 1 12 is also shown, the sliding cover has been partially removed. In the present case, the bottom side 1 14 of the receiving area 1 12 is shown, wherein the opening and possibly the mobile phone are not visible (this, the receiving area must be rotated by 180 °). The receiving region has a first side wall 1 1, which is slidably mounted in the third guide element of the edge portion 108. Furthermore, the second side wall 1 13 is shown, which is slidably mounted in the fourth guide element of Randabsclmitts 109. At the back 114 of the receiving area 1 12, the radio symbol symbolizes that it is permeable to mobile radio radiation.

While FIGS. 1 to 7 describe the first variant of the embodiment of the inventive lanyard, FIG. 8 depicts the second embodiment of the inventive mobile phone case 200. Of course, the Merkmaie the first and the second embodiment of a mobile phone case according to the invention can also be combined. In the second embodiment variant of the mobile phone case 200 according to the invention, the upper and upper front cover layers 202, 204 engage substantially flush with one another and in the illustrated embodiment form the functional unit of a front cover 206, which due to the coordinated dimensioning of lower and upper front cover layer and due to the rigidity or elasticity of the materials used, which does not require adhesives or other bonding agents, and which nevertheless do not transfer into their constituents 202 and 204 without external action of force. In addition, this functional unit is dimensioned such that in cooperation with the Aufnahmeebereicli 206 for a mobile phone provides a functional mobile phone case 200, which also manages without adhesive or other means of connection. Without external force, the phone case 200 can not transition into its components 206 and 208. Of course, connecting elements, such as latching devices, between the Aufnalimebereich, in particular its outer wall, and the lower front cover läge, in particular the inner wall, are provided for the temporary connection of front cover and receiving area.

The features of the invention disclosed in the foregoing description, in the claims and in the drawings may be essential both individually and in any combination for the realization of the invention in its various embodiments.

Claims

claims Mobile phone case, comprising a sliding lid, a receiving area for a mobile phone and at least one filling element, wherein the receiving area has a bottom wall, a first side wall and a second side wall opposite the first side wall, wherein the sliding cover is displaceably mounted along the at least one guide element and comprises a shielding material for electromagnetic radiation. Mobile phone case according to claim 1, characterized in that the first side wall has a first guide element and / or the second side wall has a second guide element, wherein the sliding cover is mounted in each case, wherein the respective guide element is present on the inside or outside of the first or second side wall, and or in that a sliding cover engaging the first and / or second side wall, in particular encompassing, comprises or represents a third and / or fourth guide element, wherein the first side wall and the second side wall is preferably slidably mounted in the third and fourth guide element. Mobile phone case according to claim 1 or 2, characterized in that the sliding cover a first edge portion and has a first opposite second edge portion _» wherein the first side wall of the first edge portion and the second side wall is assignable to the second edge portion and in particular adjacent, wherein preferably the first edge portion is mounted in the first Fülirungselement and the second edge portion in the second guide member and / or wherein the first edge portion comprises or represents the third guide element and the second edge portion comprises or represents the fourth guide element. 4. Mobile phone case according to one of the preceding claims, characterized in that  the at least one guide element, one, in particular corrugated, guide groove or guide groove, a guide rail and / or a Metalliiihrung comprises or represents  and or  in that the at least one guide element is automatically displaceable from a first to a second position, in particular by an automatic opening mechanism, wherein the automatic opening mechanism preferably comprises a pretensioned mechanism, in particular a spring mechanism. 5. Mobile phone case according to one of the preceding claims, characterized in that  the first and second Randabschiiitt L- or U-shaped are configured, in particular so that the L or U-shaped portions comprise or form the third and fourth guide element  and or  a third edge section I or U-shaped, wherein the third edge section is preferably shorter than the first and / or second edge section. 6. Mobile phone case according to one of the preceding claims, characterized in that the sliding cover is designed and arranged to slide against the first and / or second side wall on the outside and / or to encompass the first and / or second side wall, the sliding cover preferably having L- or U-shaped edge sections, which enclose the third and / or second or forming fourth guide elements o- contain included. 7. Mobile phone case according to one of the preceding. Claims, characterized in that  that the sliding cover is mounted in a bearing of the guide elements and removable from this storage and / or can be brought to the bottom wall to the plant, in particular fixed there, is. 8. Mobile phone case according to one of the preceding claims, characterized in that  the sliding cover is formed mehrschalig, in particular at least one, in particular inherently rigid, lower sliding cover layer and at least one, in particular inherently rigid, upper sliding cover layer comprises. 9. Mobile phone case, in particular according to one of the preceding claims, comprising a front cover and a receiving area for a mobile phone, wherein the receiving area has a bottom wall, a first side wall and. one of the first side wall opposite the second side wall, wherein the front cover is arranged and adapted to enter into the receiving area, in particular with the first and / or second side wall, a, in particular reversibly detachable, compound and / or wherein the receiving area, in particular the first and / or second side wall, is arranged and designed to enter with the front cover, in particular reversibly detachable, compound, and wherein the front cover is formed mehrschalig, in particular at least one, in particular inherently stiff, lower front cover layer and at least one, in particular inherently stiff, upper Front cover l ge includes. 10. The phone case according to claim 8 or 9, further comprising  at least one flexible layer, in particular at least two superimposed flexible layers, between the lower and the upper sliding or front cover layer, wherein the at least one flexible layer is present substantially over the entire surface between the lower and the upper sliding or front cover layer. 1 1. Mobile phone case according to claim 10, characterized in that the flexible layer represents or comprises a nonwoven, knitted, knitted or woven layer. 12. Phone case after spoke 10 or 1 1. characterized in that  the flexible layer, in particular with one or the shielding material for electromagnetic radiation, is radiopaque, wherein preferably the at least one lower sliding or front cover layer and / or the at least one upper sliding or front cover layer are designed to be radiation-permeable, 13. Mobile phone case according to one of claims 8 to 12, characterized in that  the at least one lower sliding or front cover layer and / or the at least one upper sliding or front cover would be at least one radiopaque coating, in particular comprising or consisting of the shielding material, preferably between the lower and upper sliding or front covers, 14. Mobile phone case according to one of claims 8 to 1 3, characterized in that  the at least one lower sliding or front cover layer and / or the at least one upper sliding or front cover layer, in particular the at least one upper sliding or front cover layer, is produced by rapid prototyping, in particular selected from the group consisting of lithographic, in particular stereol Ithografi see, processes, laser sintering process, layer laminate process (Layer Laminate Manufacturing), Thermoj et- method, extrusion process (Fused Layer Modeling). 3D Print, DLP Mask Technique and 3 D Plott Techniques. 15. Mobile phone case according to one of the preceding claims, characterized in that the sliding or Frontdcckel and / or the at least one lower sliding or front cover layer and / or the at least one upper sliding or front cover would be at least one flexible layer and / or the at least one radiopaque coating at 900 MHz, 1800 MHz and / or at 2600 MHz, a screen attenuation value of at least 5 dB, in particular 10 dB and preferably 15 dB, 16. Mobile phone case according to one of the preceding claims, characterized in that  the receiving area and / or the sliding or front cover and / or the at least one lower sliding or front cover layer and / or the at least one upper sliding or Frontdeckcllage proportionately, in particular apart from the shielding material, predominantly, of a plastic with a Shore D. Hardness of at least 50, in particular at least 70, according to ISO 868 and / or made of a carbon fiber reinforced plastic (KFK) is made. 17. Mobile phone case according to one of the preceding claims, characterized in that  the bottom wall is partially or completely, in particular predominantly, radiation-permeable. 18. Fiandyhülle according to any one of the preceding claims, characterized in that  the shielding material comprises metal, in particular a metal mesh or a metal coating  and or  in that the receiving region comprises shielding material, in particular in the first and second side wall. 1 . Mobile phone case according to claim 1 8, characterized in that  the metal is silver, copper, gold or aluminum or an alloy with at least one of these metals and / or that the metal fabric is a silver-plated, copper-plated or gold-plated metal fabric. 20. Mobile phone case according to one of the preceding claims, characterized in that the Schiebedeckei, in particular the lower sliding cover position and the upper sliding cover layer at substantially congruent position, or the front cover, in particular the lower front cover would be and the upper front cover layer at substantially congruent position, an opening or recess (also called first opening) and set designed to allow a manual operation of a triggering device or a triggering mechanism, in particular a push button, a mobile phone to have. 21. Mobile phone case according to one of the preceding claims, characterized in that  the sliding cover, in particular the lower sliding cover layer and the upper sliding cover layer at substantially congruent position, or the front cover, in particular the lower front cover layer and the upper front cover layer at substantially congruent position, an opening or recess (also called second opening) set up and designed to to enable a manual operation of an unlocking or a Entsperrmechanismus a mobile phone to have. 22. Mobile phone case according to one of the preceding claims, characterized in that  the sliding cover, in particular the lower sliding cover position and the upper sliding cover position at substantially congruent position, or the front cover, in particular the lower front cover layer and the upper front cover layer at substantially congruent position, an opening or recess (also third Called opening) and designed to release a section of the display of a mobile phone. 23. A cell phone case according to one of claims 20 to 22, characterized in that the first opening comprises a rubber-elastic material or is filled with this and / or that the second opening comprises a material, in particular a rubber-elastic material, or is filled with this, the is electrically conductive, and / or that the third opening comprises or is filled with a transparent material, in particular plastic material, 24. Mobile phone case according to claim 23, characterized in that  the material filling the second opening contains graphite. 25. Mobile phone case according to claim 23 or 24, characterized in that  the material that fills the first, second and / or third opening, in particular with a or the shielding material for electromagnetic radiation, is radiopaque. 26. Mobile phone case according to one of claims 23 to 25, characterized in that the material that fills the first, second and / or third opening, in the opening of the lower and / or upper sliding cover, in particular the upper sliding cover, or in the Opening the lower and / or the upper front cover would be. especially the upper front cover layer ,, is present. 27. A mobile phone case according to one of claims 23 to 26, characterized in that the sliding cover or the lower sliding cover and / or the upper sliding cover or the front cover or the lower front cover would be and / or the upper front cover layer containing the material in the first , second and / or third opening is made by 2K injection molding.