JP5828803B2 - Jacket for portable electronic devices - Google Patents

Description

  The present invention relates to a jacket for a portable electronic device that can be attached to a portable electronic device to prevent the device from being damaged or damaged.

  Recently, the popularity of portable electronic devices such as mobile phones has increased worldwide, and there are very many people who carry portable electronic devices in bags or clothes pockets. Along with this situation, there is an increased chance that the portable electronic device is accidentally dropped on the ground or brought into contact with a table, etc., and the surface of the device is damaged until the portable electronic device fails or does not break down. Not a few. For example, a user who wants to prevent the surface of a portable electronic device from being scratched or peeling as much as possible when the portable electronic device is accidentally brought into contact with the corner of the table or slid on the table. There are many.

  Conventionally, various jackets that cover the outside of a portable electronic device are known in order to meet the demands of such users (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3). Many of the jackets have a configuration in which an operation portion (operation key or touch panel screen) of the portable electronic device is opened and the other area is covered. The jacket is made of resin or rubber, and serves to prevent damage to the portable electronic device or damage to the device.

Registered Utility Model Publication No. 3162755 Registered Utility Model Publication No. 3171205 Registered Utility Model Publication No. 3174023

  However, the above known jackets have the following drawbacks. The jacket made of resin is too hard, and when the portable electronic device with the jacket is held in hand, it feels bad to fit the palm. Further, the rubber jacket fits the palm compared to the resin one, but has rubber-specific adhesiveness. The adhesiveness is not slippery when the portable electronic device with the jacket attached is held, but becomes resistance when taking out from a pocket or bag of clothes. The surface of the rubber jacket can be modified to reduce the stickiness, but in that case, the anti-slip effect when it is held in hand is lost, resulting in a surface similar to a resin jacket.

  The present invention has been made to solve such a problem, and provides a jacket for a portable electronic device that can easily be taken out from a bag or pocket while reducing the risk of sliding the portable electronic device with the jacket attached thereto. For the purpose.

  One form of the present invention for solving the above-described object is a jacket for a portable electronic device that is formed of a rubber-like elastic body and has a form that opens the operation surface side of the portable electronic device and covers the outside of the portable electronic device. The opening peripheral wall covering at least a part of the periphery of the operation surface, the back wall covering the opposite side of the operation surface, and the side wall connecting the opening peripheral wall and the back wall, A jacket for a portable electronic device having a surface-modified surface modified to have a lower adhesiveness than an outer surface of a side wall on at least an outer surface of the back wall.

  Another embodiment of the present invention is a portable electronic device jacket in which a surface-modified surface is further formed by extending continuously from an outer surface of a back wall to a part of a side wall.

  According to another aspect of the present invention, there is provided a jacket for portable electronic equipment, wherein the surface-modified surface is a surface formed by at least one of ultraviolet irradiation, plasma irradiation, flame treatment, ittro treatment and resin coating. It is.

  Another aspect of the present invention is also a weak surface that is modified to have a lower adhesiveness than the original outer surface, so that a part or all of the outer surface of the side wall is more adhesive than the surface-modified surface. A jacket for a portable electronic device having a modified surface.

  Another aspect of the present invention is for a portable electronic device in which the weak surface modified surface is a surface formed by at least one of ultraviolet irradiation, plasma irradiation, flame treatment, ittro treatment, and resin coating. It is a jacket.

  In another embodiment of the present invention, the adhesiveness is lowered in the order of the inner surfaces of the back wall and the side wall, the outer surface of the side wall, the opening peripheral wall and the outer surface of at least the back wall of the back wall. It is a jacket for portable electronic devices.

  Another embodiment of the present invention is a jacket for a portable electronic device in which a rubber-like elastic body is made of silicone rubber.

  ADVANTAGE OF THE INVENTION According to this invention, while reducing the risk of sliding down the portable electronic device with the jacket mounted, it is possible to provide a portable electronic device jacket that can be easily taken out from a bag or pocket.

FIG. 1 is a perspective view (upper left in the figure) seen from the opening side of the jacket for portable electronic device according to the first embodiment of the present invention and a perspective view seen from the back side opposite to the opening side (FIG. 1) Middle, lower right). FIG. 2 shows a plan view, a right side view, and a bottom view of the portable electronic device jacket shown in FIG. FIG. 3 is a first step of the method for performing the surface modification treatment on the back wall of the portable electronic device jacket of FIG. 1, for explaining the step of attaching the cover film to the region other than the back wall. The figure of is shown. FIG. 4 shows a view for explaining a step of setting a jacket for a portable electronic device on a jig and a step of irradiating ultraviolet rays thereafter after the step of FIG. FIG. 5: is the perspective view (upper left in the figure) seen from the opening side of the jacket for portable electronic devices which concerns on 2nd embodiment of this invention, and the perspective view seen from the back surface on the opposite side to the said opening side (FIG. Middle, lower right). FIG. 6 shows a perspective view of the portable electronic device jacket according to the third embodiment of the present invention as seen from the back side opposite to the opening side.

  Next, embodiments of the portable electronic device jacket according to the present invention will be described with reference to the drawings.

<First embodiment>
FIG. 1 is a perspective view (upper left in the figure) seen from the opening side of the jacket for portable electronic device according to the first embodiment of the present invention and a perspective view seen from the back side opposite to the opening side (FIG. 1) Middle, lower right). FIG. 2 shows a plan view, a right side view, and a bottom view of the portable electronic device jacket shown in FIG.

  The jacket 1 for portable electronic devices according to the first embodiment is made of a rubber-like elastic body, and has an opening on the operation surface side corresponding to the front surface of the portable electronic device (here, “mobile communication terminal”). The so-called boat shape covers the outside of the portable communication terminal. The portable electronic device jacket 1 has an operation surface side opening 10 that greatly opens the operation surface side of the mobile communication terminal. The portable electronic device jacket 1 includes an opening peripheral wall 11 that covers the periphery of the operation surface of the mobile communication terminal, a back wall 12 that covers the opposite side of the operation surface, and a side surface that connects the opening peripheral wall 11 and the back wall 12. The wall 13 is connected. The opening peripheral wall 11 covers the entire peripheral edge of the operation surface of the mobile communication terminal and is designed to be caught by the mobile communication terminal. However, the opening peripheral wall 11 may not be the entire peripheral edge of the operation surface, but may be a part covering at least a part thereof (for example, a pair of opposing edges).

  In this embodiment, the back wall 12 is formed smaller than the operation surface side opening 10, and the side wall 13 is curved while drawing an arc from the back wall 12, and is connected to the opening peripheral wall 11. However, each form of the back wall 12 and the side wall 13 can be appropriately changed according to the outer shape of the mobile communication terminal, and is not limited to the above form.

  The jacket 1 for portable electronic devices includes openings 21 and 22 that penetrate the back wall 12 in the thickness direction, and openings 23 and 24 that penetrate the side wall 13 in the thickness direction, respectively. These openings 21, 22, 23, and 24 are provided corresponding to the positions and sizes of keys (including switches), infrared ports, camera lenses, and external connection holes of the mobile communication terminal. However, the numbers, positions, shapes, and sizes of the openings 21, 22, 23, and 24 are merely examples, and keys, lenses, earphone jacks, speakers, sound collection units, antennas, accessory attachment units, and the like included in portable communication terminals. Various changes may be made according to the number, size, shape, and position of each. For example, in the portable electronic device jacket 1, an area where a plurality of small holes are gathered may be formed as an opening at the position of a speaker provided in the mobile communication terminal. Alternatively, the opening 22 may not be formed as a through-hole, and the opening 22 may be closed with a transparent plate so that the camera lens is not exposed to the outside.

  When the portable electronic device jacket 1 is attached to the portable communication terminal, the display unit and the key on the operation surface can be exposed from the operation surface side opening 10, so that the operator of the portable communication terminal looks at the display unit. When operating keys, it can be operated without any problems. Note that the portable communication terminal to which the portable electronic device jacket 1 is attached is of a type having a display unit and an operation unit independently, or a touch panel (electrostatic) that can be operated by touching the display unit. Various types of terminals are included, such as those having a detection type such as a capacitive type and a variable resistance type).

  The jacket 1 for portable electronic devices is formed so that the portable communication terminal can be attached and detached so that the back wall 12, the side wall 13, and the opening peripheral wall 11 are in contact with the back surface, the side surface, and the operation surface of the portable communication terminal. The inner capacity of the portable electronic device jacket 1 is preferably designed to be the same as or slightly smaller than the inner capacity of the portable communication terminal. Therefore, for example, the width direction length of the inner surface side of the jacket 1 for portable electronic devices is 1.5 to 2.5%, preferably 1.% with respect to the width direction length on the outer side of the casing of the portable communication terminal. It is preferable to shorten it in the range of 7 to 2.2%. When such an offset design is performed, when the portable electronic device jacket 1 is attached to the portable communication terminal, the feeling of adhesion is enhanced, and the two are not unexpectedly separated.

  The rubber-like elastic body constituting the jacket 1 for portable electronic devices is preferably made of, for example, silicone rubber, urethane rubber, ethylene propylene diene rubber (EPDM), fluorine rubber, nitrile rubber (NBR), natural rubber, etc. Among these, silicone rubber can be used more suitably. The jacket 1 for portable electronic devices is formed, for example, by supplying a high-viscosity rubber compound for molding a rubber-like elastic body or an unvulcanized liquid rubber to a molding die and performing a vulcanization process. As the molding method, any method such as press molding, transfer molding, injection molding, and cast molding can be adopted depending on the rubber material used for the rubber-like elastic body. The suitable hardness of the rubber-like elastic body constituting the jacket 1 for portable electronic devices is in the range of 30 to 80 degrees when measured based on JIS K6253 using a durometer (type A). The hardness in the above range is suitable for manufacturing a jacket 1 for a portable electronic device having an average thickness of 0.7 to 0.8 mm. When manufacturing the jacket 1 for portable electronic devices whose average thickness is 0.6 mm or less, the hardness of the range of 40-80 degree | times is more preferable. In particular, when manufacturing the jacket 1 for portable electronic devices with an average thickness of 0.5 mm or less, the hardness in the range of 70 to 80 degrees is more preferable. Furthermore, when manufacturing the jacket 1 for portable electronic devices with an average thickness of 0.4 mm or less, the hardness of 80 degree | times is more preferable. When the portable electronic device jacket 1 is formed of a rubber-like elastic body having a hardness of 70 to 80 degrees, even if the average thickness of the portable electronic device jacket 1 is extremely thin, the portable communication terminal is connected to the portable electronic device. At the same time, it is easy to hold the shape of the jacket 1 for the portable electronic device with the portable communication terminal removed.

  As shown by the dot display in FIG. 1, the portable electronic device jacket 1 is modified to have lower adhesiveness on the outer surface of the opening peripheral wall 11 and the outer surface of the back wall 12 than on the outer surface of the side wall 13. A surface modified surface 11a and a surface modified surface 12a are provided. By providing the surface-modified surface 11a and the surface-modified surface 12a, when the portable communication terminal equipped with the portable electronic device jacket 1 is put into or taken out of a pocket or bag of clothes, resistance is reduced and smooth. It can be taken in and out. Here, when the outer surface of the side wall 13 is provided with a surface-modified surface exhibiting the same level of low adhesion as the outer surfaces of the opening peripheral wall 11 and the back wall 12, it is even easier to put in and out of the pocket or bag. However, when using the portable communication terminal with the portable electronic device jacket 1, the risk of sliding the portable communication terminal from the operator's palm increases. For this reason, the adhesiveness of the outer surface of the side wall 13 is preferably higher than the adhesiveness of both outer surfaces of the opening peripheral wall 11 and the back wall 12. In addition, the surface modification surface 11 a may be provided only on the outer surface of the back wall 12 without providing the surface modification surface 11 a on the outer surface of the opening peripheral wall 11. Usually, since the opening peripheral wall 11 has a smaller area than the back wall 12, the portable communication terminal equipped with the portable electronic device jacket 1 is provided only by providing the surface modified surface 12 a only on the outer surface of the back wall 12. This is because the effect of being easily put in and out of the clothes pocket or bag can be obtained. Furthermore, the adhesiveness of the surface modified surface 11a formed on the outer surface of the opening peripheral wall 11 is made higher or lower than the adhesiveness of the surface modified surface 12a formed on the outer surface of the back wall 12. Also good. In this embodiment, the portable electronic device jacket 1 does not perform surface modification with low adhesion on the outer surface of the side wall 13 (a) the outer surface of the bottom wall 12 and the outer surface of the opening peripheral wall 11. And (b) comparing the outer surface of the side wall 13, the inner surface of the bottom wall 12, the inner surface of the side wall 13, and the inner surface of the opening peripheral wall 11, their adhesiveness is (a) <( b).

  In this embodiment, the boundary line between the opening peripheral wall 11 and the side wall 13 and the boundary line between the side wall 13 and the back wall 12 are clear. However, the boundary line may not be clear. In this case, the boundary line between the opening peripheral wall 11 and the side wall 13 is determined on the boundary line between the operation surface and the side surface of the mobile communication terminal. Similarly, the boundary line between the side wall 13 and the back wall 12 is determined on the boundary line between the side surface and the back surface of the mobile communication terminal.

  There is no limitation on the surface modification method for modifying to low adhesion, and any method may be adopted. As an example of the method, ultraviolet irradiation, plasma irradiation, flame treatment, itro treatment, resin coating and the like can be mentioned, and among these, ultraviolet irradiation is particularly preferable.

  The fact that the surface of the rubber-like elastic body has higher adhesiveness than the surface of resin, glass or metal is not completely elucidated, but is considered to be caused by the following two mechanisms. One is due to the physical property that the surface of the rubber-like elastic body is soft and is in contact with the surface of the object in contact therewith without any gaps. That is, the space between the surface of the rubber-like elastic body and the surface of the object is likely to be in a vacuum state, and it is difficult to separate them due to the atmospheric pressure that presses the rubber-like elastic body and the object. The other is due to the chemical property that a functional group such as a hydrocarbon group that may exist on the surface of the rubber-like elastic body is interposed between the surface of the object. Therefore, in order to modify the surface of the rubber-like elastic body to have low adhesiveness, it is necessary to make the surface rougher or reduce the functional groups from the surface to relatively increase oxygen atoms caused by oxidation. There is.

Ultraviolet irradiation, which is one of the surface modification methods, has the effect of oxidizing the surface of the rubber-like elastic body to roughen the surface and increasing oxygen atoms. Ultraviolet rays (wavelength: 100 to 380 nm) have a function of chemically changing oxygen (O ₂ ) in air or high-concentration oxygen atmosphere to ozone (O ₃ ). For example, when silicone rubber is used as the rubber-like elastic body, the surface of the silicone rubber is generated by irradiating the surface of the silicone rubber with ultraviolet light having a wavelength of 184.9 nm to generate ozone. It can be roughened and oxidized. Thereby, the adhesiveness of the surface of the silicone rubber is lowered, and it becomes easier to slip than the surface before the ultraviolet irradiation. However, if ozone is taken into the human body in large quantities, it will harm your health, so that the ozone concentration will not be excessively increased, UV radiation with a wavelength of 253.7 nm will be emitted simultaneously with or immediately after the irradiation with the UV light with a wavelength of 184.9 nm. It is preferable to adjust the ozone concentration so as not to adversely affect the human body by irradiating and decomposing ozone together with generation of ozone. It is preferable to irradiate ultraviolet rays under conditions where the integrated light quantity is in the range of 500 to 35000 mJ / cm ² and the irradiance is less than 200 mW / cm ² .

  Plasma irradiation, which is one of the surface modification methods, has an effect similar to that of ultraviolet irradiation, and has the effect of roughening the surface of the rubber-like elastic body and increasing oxygen atoms on the surface by oxidation. For plasma irradiation, an inert gas such as helium gas or argon gas can be preferably used. Flame treatment, which is one of the surface modification methods, is a treatment in which the surface of the rubber-like elastic body is blown with a flame. In this treatment, the surface of the rubber-like elastic body is oxidized to become hard as the oxide is generated, and irregularities are formed on the surface. Thereby, the adhesiveness of the surface of the rubber-like elastic body can be reduced. In addition, itoro treatment, which is one of the surface modification methods, includes a silane compound in the fuel gas, ignites the fuel gas to generate a flame, and brings the flame into contact with the surface of the rubber-like elastic body. Is the method. In the intro treatment, silica generated by decomposition and oxidation of the silane compound is dispersed and fixed on the surface of the rubber-like elastic body in the form of particles. For this reason, irregularities are formed on the surface of the rubber-like elastic body due to the adhesion of the silica particles, and the surface of the rubber-like elastic body is hardened by hard silica as compared with rubber. Thereby, the adhesiveness of the surface of the rubber-like elastic body can be reduced. Furthermore, resin coating, which is one of the surface modification methods, is a method in which a coating containing fine particles of resin is coated on the surface of a rubber-like elastic body, or a thin film made of resin is stuck. The coating material may be supplied to the surface of the rubber-like elastic body by any method such as spraying by spraying or application by brush. The paint preferably contains resin particles having a particle size as small as possible. As the resin, various resins such as a polyurethane resin, a fluorine resin, a polyacrylic resin, a polycarbonate resin, a polyester resin, and a polyamide resin can be used. In particular, a polyurethane resin is preferably used. it can. When surface modification is performed to increase the roughness of the surface of the rubber-like elastic body to reduce the tackiness, the maximum height (Rmax) of the surface modification surfaces 11a and 12a is 5.5 to 15.0 μm, Is preferably 6.0 to 10.0 μm, particularly preferably 6.5 to 8.0 μm.

  FIG. 3 is a first step of the method for performing the surface modification treatment on the back wall of the portable electronic device jacket of FIG. 1, for explaining the step of attaching the cover film to the region other than the back wall. The figure of is shown. FIG. 4 shows a view for explaining a step of setting a jacket for a portable electronic device on a jig and a step of irradiating ultraviolet rays thereafter after the step of FIG.

  When the surface-modified surface 12a is formed by irradiating the back wall 12 of the jacket 1 for portable electronic equipment with ultraviolet rays, the side wall is used in the region other than the back wall 12 (when irradiating ultraviolet rays from the outer surface side of the back wall 12). It is necessary to irradiate the ultraviolet rays after covering the cover film 30 that shields the ultraviolet rays on the outer surface 13. The cover film 30 includes an opening 31 for exposing the back wall 12. In this embodiment, the opening 31 has the same shape and size as the back wall 12. However, the cover film 30 may be formed with an opening 31 capable of completely covering the openings 21 and 22 in the region of the back wall 12. On the other hand, the shape of the opening 31 may be provided in the cover film 30 so that the openings 21 and 22 can be completely exposed. In addition, the cover film 30 preferably has an adhesive layer on the back side thereof so that the cover film 30 can be in close contact with the outer surface of the side wall 13.

  The portable electronic device jacket 1 with the cover film 30 attached thereto is set on a jig 40 as shown in FIG. The jig 40 is preferably made of metal or resin. In this embodiment, the jig 40 includes two protrusions 42 on the bottom plate 41. However, the number of protrusions 42 may be one or three or more. The protruding body 42 is formed to be the same as or slightly larger than the inner capacity of the portable electronic device jacket 1. This is because the projecting body 42 and the inside of the portable electronic device jacket 1 should be brought into close contact with each other so that ultraviolet rays do not hit the inner surface of the portable electronic device jacket 1 as much as possible. After setting the portable electronic device jacket 1 on the jig 40, the ultraviolet light is irradiated from the ultraviolet light source 45 toward the back surface side of the portable electronic device jacket 1. Thereby, surface modification of the back wall 12 of the jacket 1 for portable electronic devices is performed. Only one light source 45 or two or more light sources 45 for ultraviolet irradiation can be used. In particular, when surface modification of a plurality of jackets 1 for portable electronic devices is performed, it is preferable to use a plurality of light sources 45 for ultraviolet irradiation.

  Subsequently, when surface modification is performed on the outer surface of the opening peripheral wall 11 of the portable electronic device jacket 1, the inner side of the portable electronic device jacket 1 is directed upward in FIG. A jig having the same shape as that of the protrusion 42 is inserted, and ultraviolet rays are irradiated from the light source 45 for ultraviolet irradiation. Note that a cover film similar to the above cover film 30 may be attached to the inner surface of the jacket 1 for portable electronic equipment with or without using a jig having the same shape as the projecting body 42. it can. Further, it is not necessary to perform surface modification on the outer surface of the opening peripheral wall 11, and in this case, the surface modification is completed in the ultraviolet irradiation process shown in FIG.

<Second Embodiment>
FIG. 5: is the perspective view (upper left in the figure) seen from the opening side of the jacket for portable electronic devices which concerns on 2nd embodiment of this invention, and the perspective view seen from the back surface on the opposite side to the said opening side (FIG. Middle, lower right).

  Unlike the portable electronic device jacket 1 according to the first embodiment, the portable electronic device jacket 1 according to the second embodiment of the present invention also has a low-viscosity surface modification on the outer surface of the side wall 13. (A) the outer surface of the bottom wall 12 and the outer surface of the opening peripheral wall 11, (b) the outer surface of the side wall 13, (c) the inner surface of the bottom wall 12, the inner surface of the side wall 13, and the opening The inner surfaces of the peripheral walls 11 are compared so that their adhesiveness is (a) <(b) <(c). Note that the inner surface of the opening peripheral wall 11 is not necessarily included in the above (c). Since the configuration other than this is the same as that of the first embodiment, redundant description is omitted. In this embodiment, the surface modification surface 11a is formed on the outer surface of the opening peripheral wall 11. However, the surface modification surface 11a is not necessarily formed on the outer surface of the opening peripheral wall 11. good. When the outer surface of the opening peripheral wall 11 is modified, (b) a weak surface modification at the same level as the outer surface of the side wall 13 can be performed.

  The outer surface of the side wall 13 has higher adhesiveness than the surface modified surfaces 12a and 11a formed on the outer surface of the back wall 12 and the outer peripheral surface of the opening peripheral wall 11, respectively, and the outer surface of the original side wall 13 It has a weak surface modified surface 13b modified to have a lower adhesiveness. For this reason, it becomes easier to put in and take out the portable communication terminal with the portable electronic device jacket 1 from the pocket or bag of the clothes, and the operator uses the portable communication terminal with the portable electronic device jacket 1 attached. It is also possible to reduce the risk of slipping off during the operation. The weak surface modification surface 13b can be formed by at least one of ultraviolet irradiation, plasma irradiation, flame treatment, ittro treatment, and resin coating, like the surface modification surfaces 12a and 11a. The formation of the weak surface modified surface 13b may be performed, for example, by lowering the intensity of ultraviolet light or shortening the irradiation time of ultraviolet light as compared with the formation of the surface modified surfaces 12a and 11a. Further, when the surface modified surfaces 12a and 11a and the weak surface modified surface 13b are formed by a method other than ultraviolet irradiation, the following adjustments can be made. In the case of performing plasma irradiation, for example, the surface modified surfaces 12a and 11a and the weak surface modified surface 13b can be formed depending on the intensity of the plasma energy and the length of the plasma irradiation time. When performing the flame treatment or the ittro treatment, the surface modified surfaces 12a and 11a and the weak surface modified surface 13b may be formed depending on the strength of the flame, the length of the flame treatment time, and the amount of the silane compound supplied. it can. When resin coating is performed, the amount of resin content, the thickness of the resin coat, the use of different resins (the surface modified surfaces 12a and 11a are coated with fluororesin, and the weak surface modified surface 13b is coated. The surface-modified surfaces 12a and 11a and the weak surface-modified surface 13b can be formed by coating a resin having a higher adhesiveness than the fluororesin. When surface modification is performed to increase the roughness of the surface of the rubber-like elastic body to reduce the tackiness, Rmax of the weak surface modification surface 13b is smaller than Rmax of the surface modification surfaces 11a and 12a, and is 3.0. ˜8.0 μm, more preferably 4.0 to 7.0 μm, particularly preferably 4.5 to 6.0 μm.

<Third embodiment>
FIG. 6 shows a perspective view of the portable electronic device jacket according to the third embodiment of the present invention as seen from the back side opposite to the opening side.

  Unlike the portable electronic device jacket 1 according to the second embodiment, the portable electronic device jacket 1 according to the third embodiment of the present invention divides the side wall 13 into two regions and forms a back wall 12. There is a surface modified surface 13a extending continuously from the outer surface of the back wall 12 on the outer surface of the near side wall 13, and a weak surface between the surface modified surface 13a and the outer surface of the opening peripheral wall 11 It has a modified surface 13b. Similar to the surface modification surfaces 12a and 11a, the surface modification surface 13a can be suitably formed by at least one of ultraviolet irradiation, plasma irradiation, flame treatment, itro treatment, and resin coating. The average roughness (Ra) of the surface-modified surface 13a is preferably 0.5 to 0.9 μm, like the surface-modified surface 12a. Further, the adhesiveness of the surface modified surface 13a may be a level between the adhesiveness of the surface modified surface 13a and the adhesiveness of the weak surface modified surface 13b. Since the configuration other than these is the same as that of the first embodiment, redundant description is omitted. In this embodiment as well, as in the second embodiment, the surface modification surface 11a may or may not be formed on the outer surface of the opening peripheral wall 11. Furthermore, even when the outer surface of the opening peripheral wall 11 is modified, a weak surface modified surface having the same level as the weak surface modified surface 13b of the side wall 13 can be formed.

  In the outer surface of the side wall 13, the bottom surface of the jacket 1 for portable electronic device is provided with a surface modified surface 13 a that exhibits the same level of low adhesion as the surface modified surface 12 a in a region close to the outer surface of the back wall 12. A wider area on the side can be modified to have low adhesiveness, and it becomes even easier to take in and out the portable communication terminal equipped with the portable electronic device jacket 1 from a pocket or bag of clothes. Further, by providing the weak surface modification surface 13b in the region near the opening peripheral wall 11 of the side wall 13, there is a risk that the operator slips down when using the portable communication terminal with the jacket 1 for portable electronic equipment. Can also be reduced. The boundary line between the surface modified surface 13a and the weak surface modified surface 13b in the side wall 13 can be appropriately changed according to the shape of the mobile communication terminal without being fixed, but protrudes in the width direction of the side wall 13 most. It is more preferable to set the back wall 12 side than the position where the portable communication terminal with the portable electronic device jacket 1 is slid down. Further, the surface modified surface 13a and the weak surface modified surface 13b can be made separately under the same conditions as the surface modified surfaces 12a, 11a and the weak surface modified surface 13b in the second embodiment. is there. In this embodiment, the weak surface modification surface 13b may not be formed.

<Other embodiments>
The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  For example, the above-described jacket 1 for a portable electronic device is manufactured by integral molding while having a boundary line between the opening peripheral wall 11, the side wall 13, and the back wall 12. Alternatively, the side wall 13 and the back wall 12 may be separately molded and bonded. Moreover, the jacket 1 for portable electronic devices can also be used as a protective cover for portable electronic devices other than portable communication terminals, such as small game machines, electronic computers, music playback / recording devices, and photo machines.

  As a method for forming the surface modified surfaces 11a, 12a, 13a and the weak surface modified surface 13b, in addition to ultraviolet irradiation, plasma irradiation, flame treatment, ittro treatment and resin coating, for example, hard fine particles are collided to roughen the surface. A blasting method for forming the surface, a method using corona discharge, a method for forming a rough surface using a file or the like, a method for pressing a heated plate against the surface of the rubber-like elastic body, or the like may be employed. Further, the surface-modified surfaces 11a, 12a, 13a and the weak surface-modified surface 13b may be reduced in adhesion by different surface modification methods.

  The present invention can be used as a protective cover for portable electronic devices.

DESCRIPTION OF SYMBOLS 1 Jacket for portable electronic devices 11 Opening peripheral wall 12 Back wall 13 Side wall 11a, 12a, 13a Surface modification surface 13b Weak surface modification surface

Claims (5)

A jacket for a portable electronic device comprising a rubber-like elastic body and having a form that opens the operation surface side of the portable electronic device and covers the outside of the portable electronic device,
An opening peripheral wall covering at least a portion of the periphery of the front Symbol operation surface,
And the back wall covers the opposite side of the front Symbol operation surface,
And side walls connecting the front Symbol opening peripheral wall and the front Symbol backside wall,
Concatenated
The outer surface of the at least front Symbol backside wall of the pre-Symbol opening circumferential wall and front Symbol backside wall, than the outer surface of the front SL side wall includes a surface modification surface modified to low tack,
A part or all of the outer surface of the side wall is provided with a weak surface modified surface modified to have a lower adhesiveness than the original outer surface so that the adhesiveness is higher than that of the surface modified surface. A jacket for portable electronic devices. 2. The portable electronic device according to claim 1 , wherein the weak surface modified surface is a surface formed by at least one of ultraviolet irradiation, plasma irradiation, flame treatment, ittro treatment, and resin coating. Equipment jacket.   3. The surface modification surface according to claim 1, wherein the surface modification surface is a surface formed by at least one of ultraviolet irradiation, plasma irradiation, flame treatment, ittro treatment, and resin coating. Jacket for portable electronic devices. Both the inner surfaces of the back wall and the side wall, the outer surface of the side wall, the peripheral edge wall of the opening, and the outer surface of at least the back wall of the back wall are reduced in order of adhesiveness. The jacket for portable electronic devices according to any one of claims 1 to 3 . The jacket for portable electronic devices according to any one of claims 1 to 4 , wherein the rubber-like elastic body is silicone rubber.

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