JP4305733B2 - Mobile communication terminal - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a mobile communication terminal such as a mobile phone or a PHS, and more particularly to a mobile communication terminal capable of changing the appearance by a simple operation.
[0002]
[Prior art]
Conventionally, Patent Document 1 discloses a surface decoration device that allows a decorative sheet to be replaced so that the owner of a mobile phone of the same model is not mistaken and is not bored. .
[0003]
[Patent Document 1]
Utility Model Registration No. 3054414 [0004]
This mobile phone comprises a mobile communication device main body having operation buttons in a case on the back side, a rubber sheet, a main body cover on the front side, a decorative sheet arranged on the front surface of the main body cover, and a cover for pressing the same. The screw head shape is assembled with a commercially available mounting bolt with a special shape that is not a plus or minus, and a plurality of button pressing parts protrude from the rubber sheet surface corresponding to each operation button. Letters, numbers, symbols, and the like are displayed on the surface of each button pressing portion. It is stated that the rubber sheet can be prepared in various designs and colors (see paragraphs 0009 and 0010) by selling separately or as a set, and there are a plurality of decorative sheets with different designs such as designs and colors. It is described that a sheet can be prepared and replaced (see paragraph 0012).
[0005]
[Problems to be solved by the invention]
The cellular phone described in Patent Document 1 allows the decoration sheet to be replaced, and various types of designs and colors can be prepared for the rubber sheet. However, even if the rubber sheet is replaced, a special driver is used. This requires a complicated and difficult work of removing and assembling the main body cover itself constituting the casing of the mobile phone.
[0006]
As described above, the keyboard and key sheet for input of a conventional mobile phone are configured to be housed in the casing, and the replacement of the key sheet requires a disassembly work of the casing itself by a special driver. The replacement was extremely difficult.
(the purpose)
The purpose of the present invention is to make it easy to replace the key sheet, which has been difficult to replace with the mounting cover, so that even the same model of the same model will change its appearance so that it will not get bored. It is to provide a mobile terminal that can be changed.
[0007]
[Means for Solving the Problems]
A mobile communication terminal of the present invention is a rubber having a mobile communication terminal main body having a plurality of key switches and a concave-convex portion for engagement on the housing side on the front surface of the housing, and a pressing button portion protruding to a position corresponding to each key switch. A sheet, a rubber sheet is attached to the front surface of the housing so as to cover the plurality of key switches, an insertion hole through which the button portion is inserted, and a cover that engages with a housing-side engagement uneven portion (hook) on the front surface of the housing And a mounting cover having a side engaging concavo-convex portion (hook), and the rubber sheet can be replaced. The plurality of key switches are disposed on a base integrally formed on the front surface of the housing, or disposed on a circuit board mounted in the housing exposed from an opening provided on the front surface of the housing. It is characterized by being.
[0008]
In addition, the housing has a folding structure of first and second housings configured to be rotatable by a hinge portion, and the first and second housings are respectively a front half housing and a back half housing. The mounting cover includes a substantially rectangular front surface portion, a skirt portion extending in a substantially right angle direction from two sides corresponding to at least a side portion of the housing of the front surface portion, and an end of the skirt portion. A cover-side engaging uneven portion provided on the portion, and is slid from the end portion direction of the housing to engage with the housing-side engaging uneven portion of the housing, and is latch-coupled having a check function on the hinge portion side. The key switch is composed of an electrode pair, and the back surface of the button portion of the rubber sheet is independently conductive.
[0009]
(Function)
A key switch is arranged on the front surface of the housing of the mobile communication terminal, and the key sheet that covers the key switch is configured to be attachable without using a tool or the like by a mounting cover independent of the housing. It does not require disassembly work of the housing itself for replacement, and enables easy replacement.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the mobile communication terminal of the present invention will be described in detail.
FIG. 1 is a diagram showing the appearance of an embodiment of a mobile communication terminal of the present invention. In the present embodiment, the hinge shaft 3 includes a hinge portion in which the first housing on the side where the keyboard is disposed and the second housing (not shown) on which the liquid crystal display screen is disposed have the hinge shaft 3. This is an example of a foldable mobile phone that is pivotably coupled around the mobile phone.
[0011]
In a state where the first and second casings of the cellular phone are folded, a rear half casing (hereinafter referred to as a rear cover) 2 such as a rear cover which is located outside, for example, a rear cover, and a casing folded. For example, a front half case (hereinafter referred to as a front case) 1 such as a front case, which is a case on the front side, is disposed inside, and the front case 1 includes a key sheet that covers keys, and the key sheet. And a mounting cover 4 for attaching the.
[0012]
FIG. 2 is a diagram showing the configuration of the first casing in which the keyboard with the mounting cover removed is arranged. In the present embodiment, as shown in FIG. 2 (a), there is a base 6 on the front surface of the front case 1 formed by integral molding or the like, and a key switch 7 for input is arranged on the base 6. A step is formed around the surface of the base 6 and the front case 1 except for the hinge shaft 3 side, and the front case 1 with the step has a housing side such as one or more hooks in the longitudinal direction. Engaging irregularities 8 are provided.
[0013]
In addition, as shown in FIG. 2B, the first casing has a step with the base 6 on the hinge portion side of the base 6 as shown in FIG. A slit-like through-hole 9 is formed in the front case 1, and an engaging claw of the mounting cover 4 can be inserted into the through-hole 9.
[0014]
FIG. 3 is a diagram showing the configuration of the key sheet. The key sheet 10 is a rubber-like sheet that covers a plurality of key switches 7 such as a numeric keypad and various function keys on the base 6 on the front case 1 side, and is pressed at a position corresponding to each key switch 7. The button portion 12 protrudes, and the mounting projections 11 formed on the back surface of the mounting cover 4 are provided at the four corners with mounting insertion holes 11 having a dimensional shape through which a predetermined friction penetrates.
[0015]
4 and 5 are diagrams showing a configuration of a mounting cover for attaching the key sheet to the housing, in which FIG. 4 is a front side and FIG. 5 is a back side. The mounting cover 4 has a substantially rectangular front surface, and a cross-section in a direction perpendicular to the longitudinal direction is a substantially U-shaped exterior plate. The mounting cover 4 is located at a position corresponding to the button portion 12 of the key sheet 10 as shown in FIG. An insertion hole 14 for inserting the button portion 12 is provided. Further, both ends along the longitudinal direction of the mounting cover 4 are provided with skirt portions 15 extending substantially at right angles from the front surface of a substantially rectangular shape, and one or more skirt portions 15 are arranged at the end portions of the skirt portion 15 in the longitudinal direction of the front case 1. The cover side engaging uneven portion 16 such as one or more hooks that engage with the housing side engaging uneven portion 8 is provided at a position corresponding to the end of the front case 1 on the hinge shaft 3 side in the longitudinal direction. An engagement claw 13 having a flange portion having an inclined surface on the surface side of the attachment cover 4 is provided at the tip, and further, a sheet attachment protrusion 17 is provided on the inner side of the attachment cover 4 at a position corresponding to the insertion hole 11 of the key sheet. Is provided.
[0016]
The key sheet 10 is attached by the attachment cover 4 so that the back surface of each button part 12 overlaps each key switch 7, and the key switch 7 is pressed by pressing the button part 12 of the key sheet 10. A key input function is realized.
(Description of operation)
Next, the operation of attaching the key sheet to the housing using the attachment cover of the present embodiment will be described in detail below with reference to FIGS. Attachment of the key sheet 10 of the mobile phone according to the present embodiment includes attachment of the key sheet 10 to the attachment cover 4 and attachment of the attachment cover 4 on which the key sheet 10 is mounted to the front case 1.
[0017]
First, the key sheet 10 is attached to the mounting cover 4 with the back surface of the mounting cover 4 facing upward as shown in FIG. 4 and then the key sheet 10 shown in FIG. The key sheet 10 is positioned by passing through the four corner key sheet mounting protrusions 17 shown in FIG. 5 through the mounting insertion holes 11, and the button portions 12 of the key sheet 10 are fitted into the insertion holes 14 of the mounting cover 4. The key sheet 10 is mounted on the mounting cover 4 so as to fit, and the key sheet 10 is held by predetermined friction between the projection 17 of the mounting cover 4 and the mounting insertion hole 11 of the key sheet 10.
[0018]
Next, the mounting cover 4 on which the key sheet 10 is mounted is attached to the housing by turning the mounting cover 4 in the direction shown in FIG. 4, with the engaging claw 13 side facing the hinge shaft 3 side of the front case 1 and the hinge shaft. 3 is slightly shifted in the direction opposite to the direction 3 and mounted on the front case 1 and then moved (slid) from the direction opposite to the hinge shaft 3 so as to slide in the direction of the hinge shaft 3. Are engaged and fixed so that the opening sides of both hooks mesh with each other, and the engaging claw 13 of the mounting cover is inserted into the through-hole 9 on the hinge shaft 3 side of the front case shown in FIG. When the engaging claw 13 is inserted into the through hole, the inclined surface of the claw slides with the upper part of the through hole, the engaging claw bends downward, the nail part enters, and the tip passes through the rear surface of the through hole 9. By the way, the attachment cover 4 is fixed by a latch mechanism in which the tip of the claw portion engages with the upper side of the back surface of the housing wall. The key sheet and the attachment cover are attached to the mobile phone main body by the above procedure.
[0019]
Further, when the key sheet 10 and the mounting cover 4 of the cellular phone shown in FIG. 1 are replaced, the vicinity of the engaging claw of the mounting cover 4 is pressed from the front side so that the engaging claw 13 is opposite to the through hole 9 of the front case 1. By releasing the locking mechanism and sliding the mounting cover 4 in the direction opposite to the hinge shaft 3, the engagement state between the hook of the mounting cover 4 and the hook of the front case 1 is released, so that the key sheet 10 and the mounting cover are released. 4 is removed from the front case 1. Then, the key sheet 10 and / or the mounting cover 4 having different colors, shapes, and patterns are replaced with the key sheet 10 and the mounting cover 4 as described above.
[0020]
Here, as the replacement key sheet 10, it is possible to increase the number of replacement variations by preparing different types of designs and textures. Similarly, it is possible to increase the variation of replacement by preparing a plurality of attachment covers 4 having various designs, materials, shapes, and textures.
[0021]
(Other embodiments)
In the above embodiment, the example in which the mounting cover 4 with the key sheet 10 mounted on the base 6 having the key switch of the front case 1 is slid and mounted is shown. Various embodiments can be configured according to differences in configuration, attachment method, and the like.
[0022]
FIG. 6 is a diagram illustrating an example of the second embodiment. In the present embodiment, the hinge shaft 23 is provided on the front case 21 side, and the front case 21 has openings 24 having a large overall size of the plurality of key switches 22. An electronic circuit board 25 on which a key switch 22 composed of an electrode pair constituting an electrical switch is arranged on one surface is mounted on the front case 21 so that the electrode pair side is exposed from the opening 24.
[0023]
FIG. 7 is a diagram showing the shape and structure of the key sheet of the second embodiment. The key input switch according to the present embodiment is a key switch in which individual conductive materials 28 that are electrically insulated from each other on the back surface of each button portion 27 when the button portion 27 of the key sheet 29 is pressed are electrode pairs. This is an example in which the fact that the electrical resistance between the electrode pair is pressed against the electrode 22 is used for key input. The overall shape and size of the key sheet 29 is the same as the opening 24 of the front case 21, and the button portion 27 has a structure in which a seed-like conductive material 28 that is insulated from each other is bonded to the back portion.
[0024]
FIG. 8 is a diagram showing the shape and structure of the mounting cover according to the second embodiment. The attachment cover 30 is provided with an insertion hole 31 corresponding to the button part 27 of the key sheet 29, and is inserted into and engaged with an engagement hole 26 forming a housing side locking uneven part on the front surface of the front case 21 on the back surface. A cover-side engaging uneven portion 33 and a hook portion 32 on the hinge shaft 23 side are provided.
[0025]
In attaching or exchanging the key sheet in the present embodiment, the conductive material 28 on the back surface of each button portion is placed on the opening 24 of the front case 21 shown in FIG. This is realized by fitting the key switch 22 in a pair so as to face the key switch 22 and attaching a mounting cover 30 shown in FIG. Here, the attachment cover 30 can be fixed by providing a latch mechanism that has an appropriate check function at the step portion on the hinge portion 31 side of the front case 21 and is latch-coupled.
[0026]
The second embodiment can be further modified. For example, in the first embodiment, a circuit board having an electrode pair is used, a part of the board is exposed from the upper surface of the base, and a key sheet having a conductive material on the back surface of each button part is used. Then, it is a structure of the mobile phone attached as shown in FIG.
[0027]
Furthermore, as the casing structure of the cellular phone, the case where the circuit board is mounted is changed from the front side to the rear side to have a structure consisting of a front cover and a rear case, the hinge shaft of the hinge portion is provided on the rear case side, The cover is provided with openings of the overall dimensions of a plurality of key switches. After mounting the switch structure such as the electrode pairs on the circuit board on the front case so as to face the front side, the key sheet is mounted on the circuit board having the electrode pairs etc. It can also be configured to be attached by a cover.
[0028]
In the above embodiment, the housing-side engagement uneven portion and the cover-side engagement uneven portion, which are attachment means of the attachment cover, can be engaged with each other without using bolts or the like, such as hook shapes or grooves and claws. It is clear that an engagement structure can be used.
[0029]
【The invention's effect】
According to the present invention, the key switch is arranged on the front surface of the casing, and the key sheet covering the key switch is attached by the engagement means such as the hook by the mounting cover independent of the casing, There is no need to disassemble the housing for replacement, and the user can easily replace the key sheet. Prepare various key sheets and replace them appropriately to prevent tiredness of appearance and similar colors of the same model Even mobile communication terminals of the same type can give completely different personalities and can be used as mobile communication terminals with different sensations.
[Brief description of the drawings]
FIG. 1 is a diagram showing the appearance of an embodiment of a mobile communication terminal of the present invention.
FIG. 2 is a diagram showing a configuration of a casing in which a keyboard with a mounting cover removed is arranged.
FIG. 3 is a diagram illustrating a configuration of a key sheet.
FIG. 4 is a diagram illustrating a configuration of a front surface side of a mounting cover.
FIG. 5 is a diagram showing a configuration of a back surface side of a mounting cover.
FIG. 6 is a diagram showing a configuration of a second exemplary embodiment.
FIG. 7 is a diagram illustrating the shape and structure of a key sheet according to a second embodiment.
FIG. 8 is a diagram showing the shape and structure of a mounting cover according to a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Front half housing 2 Back half housing 3 Hinge shafts 4 and 30 Mounting cover 6 Base 7, 22 Key switch 8, 26 Housing side latching uneven part 9 Through-hole 10, 29 Key sheet 11 Insertion hole for attachment 13, 32 Hook or latch mechanism with check function 14, 31 Insertion hole 15 in button part Skirt part 16, 33 Convex / concave part 17 for cover side engagement Key sheet attachment protrusion 25 Circuit board

Claims (3)

A key Shito having a mobile communication terminal body having a plurality of key switches and housing side serrations on the front of the housing, the button portion and the mounting through hole for pushing projecting at positions corresponding to the respective key switch, insertion hole for inserting the said button portion, the key sheet mounting projections for positioning of said key sheet which is formed at a position passing through the housing side locking cover side engagement engages the engagement concave-convex portion engagement concave-convex portion and the mounting through hole part have a, the key sheet mounting protrusion in a state of penetrating in the mounting through hole of the key Shito, by sliding from the end direction of the housing, the housing side engaging the cover side serrations in engagement for uneven portion the engaging said key and a mounting cover attached to the front surface of the housing so as to cover the plurality of key switches to Shito, consists, allowed the replacement of the key Shito Mobile communication terminals, characterized in that the the. A mobile communication terminal main body having a plurality of key switches and a concave-convex portion for housing-side engagement on the front surface of the housing, a key sheet having a pressing button portion projecting to a position corresponding to each key switch, and the key sheet An attachment cover having an insertion hole through which the button portion is inserted and a cover side engagement uneven portion that engages with the housing side engagement uneven portion on the front surface of the housing; and is attached to the front surface of the housing so as to cover a plurality of key switches. The mounting cover is provided at a substantially rectangular front surface portion, a skirt portion extending in a substantially right angle direction from two sides corresponding to at least a side portion of the housing of the front surface portion, and an end portion of the skirt portion. The cover side engaging irregularities, and sliding from the edge direction of the casing to engage the cover side engaging irregularities with the casing side engaging irregularities of the casing, Mobile communication terminal of the latching coupling has the casing and return function in the sliding direction of the end, characterized in that to allow the replacement of the key sheet. The plurality of key switches, the mobile communication terminal according to claim 1 or 2, characterized in that it is disposed on a base which is integrally formed on the front surface of the housing.

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