Patent Grant
9521220
Field
The present disclosure is generally related to a case for use with a portable electronic device. More specifically, the disclosure relates to a case configured to protect the electronic device from impacts or abrasions.
Background
Some cases for portable electronic devices, such as cellular phones and personal digital assistants (PDAs), for example, have hard exterior surfaces with low coefficients of friction. Such exterior surfaces may facilitate insertion and removal of the case (and electronic device therein) from a user's pocket. Other cases are formed from a softer cushioning material, tending to have a relatively high coefficient of friction, which may provide greater impact protection to the electronic device. Among other things, the present application discloses improvements to cases for electronic devices.
According to an embodiment, a case for use with a portable electronic device includes a base portion with side portions extending therefrom, the base portion and side portions forming a pocket configured to surround a back and sides of the portable electronic device. The case also includes a first material generally being positioned at an exterior of the pocket, wherein a majority of an exterior surface of the base portion is formed from the first material. The case also includes a second material generally being positioned at an interior of the pocket, the second material protruding through one or more apertures in the first material at the base portion so that portions of the second material protrude from the interior of the pocket to the exterior surface of the base portion, and protrude outward from the first material at the base portion such that when the base portion of the case is placed on the support surface, the second material contacts the support surface. The second material has a higher coefficient of friction than the first material and is secured to the first material. The second material protrudes through the one or more apertures in the first material at the base portion extends away from the one or more apertures on opposing surfaces of the first material at the exterior of the pocket and the interior of the pocket to provide securement between the first and second materials.
Other features and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims.
Embodiments will now be described, by way of example only, with reference to the accompanying drawings in which corresponding reference symbols indicate corresponding parts, and in which:
As shown in
It may be appreciated that the case 10 may have features or apertures formed therein, configured to correspond with features on the portable electronic device. For example, as shown in
Similarly to the aperture 90 extending through the base 20, in some embodiments the left side 50a and/or the right side 50b may contain features or apertures formed therein, configured to correspond with features on the portable electronic device. For example,
As depicted the bottom view of the case 10 in
As appreciated in the views of
As further shown in
As indicated above, in some embodiments the base grip 190, the raised features 100, and the corner joints 60 may all be formed from the second material 120. In an embodiment, the base grip 190, the corner joints 60, and/or the raised features 100 may all be coupled by the interior surface 80 of the base 20, which may be formed from a layer of the second material 120, positioned to the interior of the first material 110 forming the exterior surface 180. In some such embodiments, features of the case 10 formed from the first material 110 may be interconnected, with features of the case 10 formed from the second material 120 formed onto or integral with the features formed from the first material 110. An example of such a construction may be appreciated in the illustrated embodiment through consideration of
As shown in
As additionally shown, in some embodiments gaps 260 may be present at the corners of the preform member 200, which may allow the top 30, bottom 40, and sides 50a and 50b to flex relative to the base portion 210, allowing an area therebetween to expand to facilitate insertion of the portable electronic device. In an embodiment, the preform member 200 as a whole, formed from the first material 110, may be more elastic than the second material 120, and configured to snap back to its original shape after being deformed to allow insertion of the portable electronic device therein. It may be appreciated that the gaps 260 may be filled with the second material 120 to form the corner joints 60. In an embodiment, the second material 120 may be softer than the first material 110, so as to deform with the first material 110 when case 10 is deformed to insert the portable electronic device, but allow for flexibility of the sides of the case 10 at the gaps 260. In some embodiments, the second material 120 may be shaped to protrude out from the gaps 260 defined by the preform member 200, so that the corner joints 60 protrude from the body of the case 10, as illustrated in
In some embodiments, the apertures formed in the preform member 200 may be configured to receive a quantity of the second material 120 that may be molded, shaped, or otherwise formed to include various desired features therein. For example, side apertures 270a and 270b, formed in the side portions 240a and 240b respectively, may be configured to receive a mass of the second material 120 which itself may be shaped to include the raised portions 100 and (on the left side 50b of the illustrated embodiment) the button features 140a and 140b. As shown in the illustrated embodiment, the side apertures 270a and 270b may be configured with support ribs 280 that are recessed from the exterior opening of the side apertures 270a and 270b, however provide structural stability to the side portions 240a and 240b. It may be appreciated that in some embodiments the support ribs 280 may be partially or completely covered by the second material 120, as viewed from the exterior of the case 10 and/or from the interior of the pocket. As shown in
While in some embodiments the first material 110 and the second material 120 may be integrally formed together (e.g., through co-injection molding or similar assembly mechanisms to form a one piece embodiment of the case 10), in the illustrated embodiment, the first material 110 may be formed into the preform member 200 first, before being overmolded with the second material 120. While in some embodiments the preform member 200 may be merely partially cured before the second material 120 is applied and molded therearound, in an embodiment the formation of the preform member 200 may be complete (e.g. cured, removed from the mold, and/or separately assembled) before being combined with the second material 120.
In the illustrated embodiment, with the preform member 200 being formed from the first material 110 before application of the second material 120 thereto, it may be appreciated that molding supports may be positioned thereon to facilitate overmolding of the second material 120. In some embodiments the molding supports may be configured to cooperate with the mold in the overmolding process. For example, in an embodiment one or more of the molding supports may be configured to position or align a portion of the mold to facilitate injection of the second material 120. As shown in
It may therefore be appreciated that in some embodiments the second material 120 may surround the first material 110, such as by being molded onto opposing faces of the first material 110 (e.g., as the preform member 200), however being connected. It may be appreciated that such a configuration may provide increased structural stability to the case 10. For example, in the illustrated embodiment, the second material 120 may flow through the apertures 300, across the base grip grooves 310, and connect with other portions of the second material 120 before curing. Where the second material 120 coats the interior surface 80 of the base 20, and overlays (and in an embodiment protrudes from) the exterior surface 180 of the base 20, it may be appreciated that the second material 120 may sandwich the first material 110 therebetween. As noted above, in some embodiment the support ribs 280 (formed from the first material 110) may be partially or completely covered by the second material 120. It may be appreciated that the support ribs 280 surrounded by the second material 120 may provide increased structural stability to the sides 50a and 50b of the case 10 in such embodiments.
As shown, in some embodiments, the molding or other addition of the second material 120 may be configured to position the second material 120 at the gaps 260 so as to form the corner joints 60. The second material 120 may also form the lips around the bottom apertures 170, as shown, as well as fill the side apertures 270a and 270b. It may be appreciated that in embodiments where the raised features 100 are molded from the second material 120, the mold may include grooves configured to shape the second material 120 to create the raised features 100 protruding from the case 10. It may also be appreciated that, in some embodiments, the second material 120 may additionally form the lips 70 surrounding the opening of the case 10 as the second material 120 is molded onto the preform member 200. It may be appreciated that in some embodiments, the lips 70 may also protrude above the opening of the case 10 (e.g., away from a screen of a portable electronic device inserted within the case 10), which may cause the second material 120 to extend outward from the first material 110 in the case 10 at both of the largest opposing faces of the case 10. In an embodiment, such as that shown, an aperture 320 extending through the base 20 may be configured to be filled with the second material 120, and be molded to depict a marketing insignia 330 therein. Other features formed from the second material 120 may additionally or alternatively be formed from the addition of the second material 120 to the preform member 200. Furthermore, it may be appreciated that the molding or other assembly may be performed simultaneously or sequentially in various embodiments. Accordingly, constructing case 10 by overmolding the second material 120 to the preform member 200 is not intended to be limiting. Indeed, in some embodiments the second material 120 may be formed with recessed regions at exterior surfaces thereof, and one or more harder plates of first material 110 may be molded thereon.
It may be appreciated that the protruding configuration of the corner joints 60, the raised features 100, the base grips 190, and/or the lips 70 may provide a degree of additional protection to the case 10 and a portable electronic device housed therein. For example, where the first material 110 is glossy or otherwise prone to scratching, the protruding second material 120 may space the first material 110 from support surfaces, reducing a likelihood of the first material 110 being scratched by the support surface or debris thereon. Additionally, where the second material is resilient (e.g. soft and/or flexible), the protruding configuration thereof may provide enhanced impact resistance, such as when the case 10 is dropped and impacts a face or corner thereof. For example, if the case 10 is dropped at a corner thereof, the protruding second material 120 at the corner joint 60 may provide enhanced impact resistance, and mitigate a tendency of the first material 110 adjacent to the gap 260 from impacting and cracking. This additional protection may be particularly beneficial where, like in the illustrated embodiment, the first material 110 is positioned to form the majority of the exterior of the case 10. Furthermore, where the second material 120 has a higher coefficient of friction and/or resiliency than the first material 110, it may be appreciated that the protruding amount of the second material 120 may cause the second material 120 to contact a support surface instead of the first material 110, providing a higher frictional engagement between the case 10 and the support surface. As noted above, such a higher frictional engagement may prevent the case 10 from tipping over when placed on one of the sides 50a or 50b (e.g., through the case 10 and portable electronic device having a high center of gravity in such a position).
As described above, the protrusion of the second material 120 from the first material 110 at the base 20 may provide regions of high friction contact when the case 10 is placed on a support surface. In an embodiment, more than half of the exterior of the base 20 (i.e., the surface outside of the pocket) may be formed from the first material 110, while less than half of the exterior of the base 20 may be formed from the second material 120 protruding outwards from the first material 110, so as to form a surface of the second material 120 that may contact a support surface instead of the first material 110 when the base 20 of the case 10 is resting on the support surface. In other embodiments, the second material 120 forming the surface that contacts a support surface may make up a smaller proportion of the exterior of the base 20. For example, the second material 120 protruding from the first material 110 at the exterior of the base 20 may be approximately less than or equal to 40% of the exterior of the base 20. In other embodiments, the second material 120 protruding from the first material 110 at the exterior of the base 20 may be approximately less than or equal to 30% of the exterior of the base 20, approximately less than or equal to 20% of the exterior of the base 20, approximately less than or equal to 10% of the exterior of the base 20, or approximately less than or equal to 10% (e.g., 5%, 1%, or less) of the exterior of the base 20.
In an embodiment, the amount of the second material 120 protruding out from the first material 110 at the exterior of the base 20 may be just sufficient to support the base 20 thereon, so as to space the first material 110 from a support surface, so that contact between the support surface and the base 20 is via the second material 120 instead of the first material 110. For example, in an embodiment the second material 120 may protrude from the first material 110 at the exterior of the base 20 at least at three regions, so as to provide a stable support of second material 120 when the base 20 is placed against a support surface. In an embodiment, a protruding amount of second material 120 may be positioned at each corner of the base 20 (e.g., adjacent to the corner joints 60), to provide four points of contact for the second material 120 between the base 20 and the support surface. In some embodiments, such as that illustrated herein, the second material 120 may generally form a ring following a perimeter of the base 20 (e.g., following the base grip grooves 310 in some embodiments), surrounding a substantial amount of the first material 110 of the base 20. In an embodiment, the protruding portions of second material 120 may form thin or elongate shapes across the first material 110 of the base 20.
As indicated above, features of the constructions and configurations described herein and illustrated in the Figures may be exemplarity in some embodiments. For example, while in the illustrated embodiment the case 10 is formed from the overmolding of the second material 120 onto the preform member 200, in some embodiments the case 10 may be formed by simultaneously molding the first material 110 and the second material 120. In some such embodiments, the case 10 may be formed using processes such as injection molding. In an embodiment, case 10 is preferably formed from injection-molded plastic. Other constructions are additionally or alternatively possible, including but not limited to creating an assembly through a combination of constituent components, assembled through adhesion with an adhesive, interlocking components, or any other appropriate assembly mechanism.
It may additionally be appreciated that dimensions of the case 10 may vary according to the type of electronic device to be held therein. For example, in some embodiments where the first material 110 (e.g., as the preform member 200) is relatively hard or rigid (especially as compared to the second material 120), it may be appreciated that the dimensions thereof may be sufficient to surround the portable electronic device. In an embodiment, the relatively flexible second material 120 may be sized to snugly surround the portable electronic device, and may provide impact protection for the portable electronic device within the first material 110. Additionally, in some embodiments the first material 110 in the case 10 may be shaped to generally match contours of the portable electronic device. For example, the preform member 200 or analogous components of other embodiments of the case 10 may cause the case 10 to generally resemble the portable electronic device. In some embodiments, the case 10 may be formed with the first material 110 (e.g., as the preform member 200) having multiple facets or curves formed on one or more of the base 20, top 30, bottom 40, right side 50a, and left side 50b. In other embodiments, the case 10 may be shaped in a manner that is externally different from the portable electronic device configured to be retained therein. In some embodiments, the second material 120 may be configured to create a pocket shaped to retain the portable electronic device, but may have varying thickness within to fill the space between the pocket and the first material 110 at the exterior of the case 10. Accordingly, it may be appreciated that the generally straight lines and rounded corners depicted in the case 10 illustrated herein are merely exemplary.
The materials utilized in the case 10 and/or their properties may also vary across embodiments. For example, while in the illustrated embodiment the first material 110 utilized in the preform member 200 is described as being hard or rigid, in other embodiments the first material 110 may be any appropriate material having less shock absorbing properties than the second material 120. For example, while both the first material 110 and the second material 120 may be flexible in some embodiments, the second material 120 may be more resilient than the first material 110. It may be understood that resilient materials may include materials that can substantially return to its original form after being stretched, moved, bent, or otherwise deformed (within a reasonable tolerance).
It may be appreciated that in the art, resiliency may be measured by a durometer. Shore A durometers generally measure the compressive deformability of softer materials, such as rubbers and softer polyurethanes, while Shore D durometers may measure compressive deformability of harder polyurethanes and softer plastics. Rockwell R durometers typically measure compressive deformability of harder polyurethanes and plastics, ranging from Teflon through phenolic, for example. Accordingly, in some embodiments the second material 120 may have a hardness/resiliency on a scale conventionally measured on a Shore A durometer (e.g., a Shore A durometer value between 20-95), while the first material 110 may have a hardness/resiliency on a scale conventionally measured on a Shore D durometer of 25-85, or on a Rockwell R durometer of 50-150. In an embodiment, the first material 110 may be harder or more rigid so as to provide penetrative protection thereto, distributing impact forces applied thereto throughout the first material 110. The comparative softness and resilience of the second material 120 (e.g., having a Shore A durometer value of less than 90) may absorb shocks therein, and give to prevent direct application of forces to the portable electronic device housed therein. It may be appreciated that in some embodiments hardness/resilience and an associated coefficient of friction may be distinct from a coefficient of friction associated with the material and a given reference surface. For example, some harder materials may have a relatively high coefficient of friction, while some softer/resilient materials may have a relatively lower coefficient of friction. Accordingly, the selection of the first material 110 and the second material 120 may vary across embodiments, depending on a desired protruding resilient portion or a desired portion having a higher coefficient of friction.
As such, the material selections of the first material 110 and the second material 120 may vary, and may each have different properties, including but not limited to differing hardness/resiliency, and differing coefficients of friction. It may be appreciated that in some embodiments, the same material may have different hardness's/resiliencies, or different coefficients of friction (e.g., with a particular support surface) depending on how the material is prepared. Regardless, in some non-limiting embodiments, the second material 120 may comprise a thermoplastic polymer or a thermoplastic elastomer material, such as thermoplastic polyethylene (TPE) or thermoplastic polyurethane (TPU). Any other resilient material, such as silicone, rubber or foam, may additionally or alternatively be utilized. In contrast, the first material 110 may be more prone to permanent deformation, including cracking, scratching, shearing, or so on. As one non-limiting example, in the illustrated embodiment, where the first material 110 is a molded plastic, the first material 110 may comprise a thermoplastic, including but not limited to thermoplastics such as polycarbonate, acrylonitrile butadiene styrene (ABS), and polyvinyl chloride (PVC). It may be appreciated that the first material 110 need not be formed from molded plastic, but may comprise any other material, including but not limited to wood, metal, glass, leather, or so on, which may be overmolded with or assembled with a resilient or otherwise impact absorbing second material that protrudes from the first material 110 as described herein.
In some embodiments, the first material 110 and the second material 120 may have different cosmetic properties. For example, in some embodiments, the first material 110 may have glossy characteristics, while the second material 120 may have matte characteristics. In other embodiments, the converse may be true. In some embodiments, the first material 110 and the second material 120 may be different colors. Additionally, in various embodiments, one or more additional materials may be embedded or combined with either or both of the first material 110 and the second material 120, and may serve cosmetic or functional purposes. For example, different portions of the components of the case 10 described above (e.g., different parts of the preform member 200) may be made from different materials, which may be molded or otherwise assembled before being overmolded or otherwise secured to the second material 120 and/or additional materials that protrude from those portions forming the majority of the exterior of the case 10. In an embodiment, the second material 120 and the first material 110 may be secured to each other through a bond (e.g., as in the molding process) or through adhesion (e.g., via an adhesive).
While the principles of the invention have been made clear in the illustrative embodiments set forth above, it will be apparent to those skilled in the art that various modifications may be made to the structure, arrangement, proportion, elements, materials, and components used in the practice of the invention.
It will thus be seen that the objects of this invention have been fully and effectively accomplished. It will be realized, however, that the foregoing preferred specific embodiments have been shown and described for the purpose of illustrating the functional and structural principles of this invention and are subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of this disclosure, as recited in the following claims.
This application claims benefit to U.S. patent application Ser. No. 61/761,556 filed Feb. 6, 2013, the content of which is incorporated herein in its entirety.
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| Number | Date | Country | |
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| Number | Date | Country | |
|---|---|---|---|
| 61761556 | Feb 2013 | US |
