WO2011086950A1 - Electronic device - Google Patents

Electronic device Download PDF

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Publication number
WO2011086950A1
WO2011086950A1 PCT/JP2011/000203 JP2011000203W WO2011086950A1 WO 2011086950 A1 WO2011086950 A1 WO 2011086950A1 JP 2011000203 W JP2011000203 W JP 2011000203W WO 2011086950 A1 WO2011086950 A1 WO 2011086950A1
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WO
WIPO (PCT)
Prior art keywords
sheet
graphite sheet
region
key
graphite
Prior art date
Application number
PCT/JP2011/000203
Other languages
French (fr)
Japanese (ja)
Inventor
秀広 柳橋
卓 鈴木
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to JP2011549953A priority Critical patent/JPWO2011086950A1/en
Publication of WO2011086950A1 publication Critical patent/WO2011086950A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/704—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by the layers, e.g. by their material or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/03—Constructional details, e.g. casings, housings
    • H04B1/036—Cooling arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/072—High temperature considerations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position

Definitions

  • the present invention relates to an electronic device including a graphite sheet having high thermal conductivity between a casing and a key substrate.
  • a foldable portable terminal in which a lower housing (housing) and an upper housing are connected to each other in a foldable manner, an operation unit is provided in the lower housing, and a display unit is provided in the upper housing.
  • the operation unit includes a lower housing having a flat metal surface, a graphite sheet adhesively fixed to the metal surface of the lower housing, a key substrate overlaid on the graphite sheet, and a key sheet covering the key substrate.
  • the graphite sheet includes graphite having high thermal conductivity (see, for example, Patent Documents 1 and 2).
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electronic device capable of obtaining good heat dissipation by reliably bringing a graphite sheet into surface contact with a metal surface of a housing. There is to do.
  • the present invention includes a first surface that is a bottom surface of a recess, a second surface that is a top surface of the recess, and a step surface spanned between the first surface and the second surface.
  • a key sheet covering the key board, the key board, the stepped surface of the graphite sheet, and the portion disposed on the second surface, and the third surface of the graphite sheet includes It adheres to the first surface and does not adhere to the step surface and the second surface.
  • the third surface of the graphite sheet is adhered to the first surface.
  • the graphite sheet By sticking the third surface of the graphite sheet to the first surface, the graphite sheet can be reliably brought into surface contact with the first surface (for example, a metal surface).
  • the first surface for example, a metal surface.
  • the graphite sheet when the graphite sheet is adhered to the step surface or the second surface, the movement of the graphite sheet adhered to the second surface is restricted, and it is difficult to adapt the graphite sheet to the step surface. For this reason, it is difficult to stick the graphite sheet so as not to float while allowing the graphite sheet to conform to the stepped surface. Therefore, by preventing the third surface of the graphite sheet from sticking to the step surface and the second surface, the graphite sheet can be allowed to move and become familiar with the step surface.
  • the graphite sheet can be arranged so that there is no gap with respect to the step surface (that is, it does not float up). Thereby, it is possible to prevent the key substrate from being deformed so as to be scratched by the lifted graphite sheet, and to prevent a click failure of the key substrate (specifically, the panel switch (dome switch)).
  • the graphite sheet can be easily adapted to the step surface. Therefore, when the graphite sheet is attached to the first surface, the graphite sheet can be easily attached to the stepped surface so as not to be floated while being familiar with the stepped surface. Thereby, the working efficiency at the time of sticking a graphite sheet can be improved.
  • the fourth surface of the graphite sheet adheres to the key substrate and does not adhere to the key sheet.
  • the key substrate can be securely fixed to the fourth surface of the graphite sheet by sticking the fourth surface of the graphite sheet to the key substrate. Furthermore, even when the key sheet is pasted on the second surface in a state where the graphite sheet jumps up along the step surface in a direction away from the second surface, by not sticking the key sheet to the fourth surface of the graphite sheet, The key sheet is no longer attached to the jumped graphite sheet, and the work efficiency when attaching the graphite sheet can be improved.
  • the key sheet includes a contact portion that contacts the second surface, and the key sheet and the second surface are fixed at the contact portion.
  • the key sheet and the second surface are fixed at the contact portion, a space can be formed between the key sheet and the second surface, whereby the key sheet and the second surface can be formed.
  • the movement of the graphite sheet can be allowed.
  • the contact portion is a peripheral portion of a key sheet disposed on the second surface.
  • the movement of the graphite sheet can be allowed between the key sheet and the second surface by making the contact portion a peripheral portion of the key sheet disposed on the second surface.
  • the graphite sheet has adhesiveness in a region facing the first surface, the step surface, and the second surface in the third surface, and the step surface and the step A non-adhesive sheet is provided in a region facing the second surface.
  • the third surface of the graphite sheet can be adhered to the first surface. Therefore, the graphite sheet can be reliably brought into surface contact with the first surface (for example, a metal surface). Thereby, the heat of a 1st surface (metal surface) can be suitably transmitted to a graphite sheet, and favorable heat dissipation can be obtained.
  • the non-adhesive sheet can prevent the third surface of the graphite sheet from adhering to the step surface or the second surface. Therefore, the movement of the graphite sheet is allowed, so that the graphite sheet can be adjusted to the stepped surface.
  • the graphite sheet By fitting the graphite sheet into the stepped surface, the graphite sheet can be arranged so that it does not float on the stepped surface. Thereby, it is possible to prevent the key substrate from being deformed so as to be scratched by the floated graphite sheet, and to prevent a click failure of the key substrate (panel switch).
  • the graphite sheet can be easily adapted to the step surface by not sticking the graphite sheet to the step surface or the second surface. Therefore, when the graphite sheet is attached to the first surface, the graphite sheet can be easily attached to the stepped surface so as not to be floated while being familiar with the stepped surface. Thereby, the working efficiency at the time of sticking a graphite sheet can be improved.
  • the graphite sheet has adhesiveness in a region facing the first surface, the step surface, and the second surface in the fourth surface, and the step surface and the step A non-adhesive sheet is provided in a region facing the second surface.
  • the key substrate can be adhered to the fourth surface of the graphite sheet by having the adhesiveness in the region facing the first surface of the fourth surface of the graphite sheet.
  • substrate can be reliably fixed to the 4th surface of a graphite sheet.
  • the non-adhesive sheet can prevent the key sheet from sticking to the fourth surface of the graphite sheet. Therefore, it can prevent that a key sheet adheres to the 4th surface of a graphite sheet, and is dented in a concave shape. Thereby, it can prevent that a key sheet
  • the graphite sheet is securely brought into surface contact with the metal surface of the first surface by adhering the third surface of the graphite sheet to the housing (first surface). It has the effect that favorable heat dissipation is obtained.
  • the disassembled perspective view which shows the electronic device of 1st Embodiment AA line sectional view of FIG. Sectional drawing which shows the state which decomposed
  • Sectional drawing which shows the electronic device of 2nd Embodiment Sectional drawing which shows the state which decomposed
  • the electronic device 10 As shown in FIG. 1, the electronic device 10 according to the first embodiment of the present invention includes a lower casing 11 provided with an operation unit 12, an upper casing 14 provided with a display unit 15, and a lower casing.
  • 11 is a foldable portable terminal that includes a connecting portion 17 that foldably connects the upper housing 14 and the upper housing 14, and a graphite sheet 20 (see FIG. 2) disposed between the lower housing 11 and the operation portion 12.
  • a foldable mobile terminal is exemplified as the electronic device 10, but the electronic device 10 is not limited to a foldable mobile terminal, and can be applied to other electronic devices.
  • the lower casing 11 is formed in a casing shape by a lower cover 18 constituting a lower portion of the lower casing 11 and an upper cover (housing) 19 provided on the upper portion of the lower cover 18.
  • the upper cover 19 includes a first surface 23 that is the bottom surface of the recess 22, a second surface 24 that is the top surface of the recess 22, the first surface 23, and the second surface And a step surface 25 spanned between the two surfaces 24.
  • the first surface 23 is a horizontal plane that forms the bottom surface of the recess 22.
  • the second surface 24 is a horizontal surface that forms the top surface of the recess 22 (that is, the surface above the first surface 23).
  • the step surface 25 is an inclined surface extending upwardly from the first surface 23 toward the second surface 24.
  • step difference surface 25 are formed with the metal plate (namely, metal surface). This metal plate is insert-molded in the upper cover 19.
  • the operation unit 12 includes a key substrate 26 disposed on the graphite sheet 20 and a key sheet 28 that covers the key substrate 26.
  • the key substrate 26 includes a substrate sheet 27a disposed on the graphite sheet 20 and a panel switch (dome switch) 27b provided on the substrate sheet 27a.
  • the substrate sheet 27 a is a flexible heat-dissipating FPC sheet disposed in the sixth region (region) 33 on the fourth surface 35 b of the graphite sheet 20.
  • the sixth region 33 is a region corresponding to (facing to) the first surface 23 in the fourth surface 35 b of the graphite sheet 20.
  • the key sheet 28 is a member that covers the key substrate 26 and the fifth region 32 of the graphite sheet 20 and includes a key pressing portion 28a.
  • the fifth region 32 is a region disposed (facing) on the step surface 25 and the second surface 24 of the graphite sheet 20 (fourth surface 35b).
  • the key sheet 28 includes a contact portion 29 that connects the key sheet 28 to the second surface 24 of the upper cover 19.
  • the contact portion 29 is a member that is provided on the peripheral portion 28 b of the key sheet 28 and is fixed (arranged) to the second surface 24 by being connected (contacted) to the second surface 24.
  • the graphite sheet 20 includes a sheet main body 35 disposed along the concave portion 22 (the first surface 23, the second surface 24, and the step surface 25), and a graphite 36 accommodated in the sheet main body 35. It is a flexible sheet. Graphite 36 is flexible and has high thermal conductivity, but is a fragile member. Therefore, by accommodating the graphite 36 in the sheet main body 35, the graphite sheet 20 has flexibility and heat dissipation and is formed into a sheet shape that is difficult to break.
  • the sheet main body 35 is a flexible sheet having a third surface 35a located on the upper cover 19 side and a fourth surface 35b located opposite to the third surface 35a (that is, on the key sheet 28 side). It is. And the graphite 36 is provided between the 3rd surface 35a and the 4th surface 35b.
  • the third surface 35 a of the sheet body 35 is arranged (formed) following the first surface 23, the step surface 25, and the second surface 24.
  • This graphite sheet 20 includes a first adhesive material 41 provided on the third surface 35a of the sheet body 35, and a first non-adhesive sheet (non-adhesive sheet) disposed between the first adhesive material 41 and the upper cover 19. 42, a second adhesive material 43 provided on the fourth surface 35b of the sheet main body 35, and a second non-adhesive sheet (between the second adhesive material 43 and the operation unit 12 (ie, the key sheet 28)) ( Non-adhesive sheet) 44.
  • the first adhesive material 41 is provided in a first region (region) 46 on the third surface 35 a of the sheet main body 35.
  • the first region 46 is a region facing the first surface 23, the step surface 25, and the second surface in the third surface 35 a of the sheet main body 35. That is, the first region 46 of the sheet main body 35 has adhesiveness.
  • the first non-adhesive sheet 42 is provided in a second region (region) 47 (specifically, the first adhesive material 41) in the third surface 35 a of the sheet main body 35.
  • the second region 47 is a region facing the step surface 25 and the second surface 24 in the third surface 35 a of the sheet main body 35.
  • the third region 48 of the third surface 35 a is adhered to the first surface 23 via the first adhesive material 41.
  • the third region 48 is a region facing the first surface 23 in the third surface 35 a of the sheet main body 35.
  • the third surface 35 a of the graphite sheet 20 is such that the third region 48 adheres to the first surface 23 and the second region 47 does not adhere to the step surface 25 and the second surface 24. Is formed.
  • the graphite sheet 20 By sticking the third region 48 of the graphite sheet 20 to the first surface 23, the graphite sheet 20 can be reliably brought into surface contact with the first surface 23 (metal surface). Thereby, the heat of the 1st surface 23 (metal surface) can be suitably transmitted to the graphite sheet 20, and favorable heat dissipation can be obtained.
  • the first non-adhesive sheet 42 prevents the second region 47 of the graphite sheet 20 from sticking to the step surface 25 and the second surface 24.
  • the second region 47 of the graphite sheet 20 can be moved, and the second region 47 can be adapted to the step surface 25.
  • the graphite sheet 20 can be arranged so as not to float with respect to the step surface 25 by making the second region 47 conform to the step surface 25.
  • the key substrate 26 specifically, the substrate sheet 27a
  • a step surface 25 is provided in the vicinity of the panel switch 27b. Therefore, it is possible to prevent the graphite sheet 20 from being repeatedly bent by the pressing operation of the key pressing portion 28a by suppressing the graphite sheet 20 from floating on the step surface 25 in the vicinity of the panel switch 27b. Thereby, the graphite 36 is prevented from being cut by repeated bending of the graphite sheet 20, and the heat transfer function of the graphite sheet 20 can be kept good.
  • the second adhesive material 43 is provided in the fourth region (region) 31 on the fourth surface 35 b of the graphite sheet 20.
  • the fourth region 31 is a region facing the first surface 23, the step surface 25, and the second surface in the fourth surface 35 b of the graphite sheet 20. That is, the 4th area
  • the second non-adhesive sheet 44 is provided in the fifth region (part, region) 32 (specifically, the second adhesive material 43) on the fourth surface 35b of the graphite sheet 20.
  • the fifth region 32 is a region facing the step surface 25 and the second surface 24 on the fourth surface 35 b of the graphite sheet 20.
  • the sixth area 33 of the fourth surface 35 b is adhered to the substrate sheet 27 a of the key substrate 26 via the second adhesive material 43.
  • the fourth surface 35b of the graphite sheet 20 is such that the sixth region 33 adheres to the key substrate 26 (substrate sheet 27a) and the fifth region 32 has the key sheet 28 (specifically, the circumferential surface). It is formed so as not to stick to the vicinity 28c) of the portion 28b.
  • the second non-adhesive sheet 44 can prevent the key sheet 28 (the vicinity 28 c of the peripheral portion 28 b) from adhering to the fifth region 32 of the graphite sheet 20. Therefore, it is possible to prevent the key sheet 28 (the vicinity 28c of the peripheral portion 28b) from adhering to the fifth region 32 of the graphite sheet 20 and being recessed in a concave shape. Thereby, it is possible to prevent the key sheet 28 (the vicinity 28c of the peripheral portion 28b) from being dented and to have a poor appearance, and to maintain a good appearance.
  • the key sheet 28 is attached to the second surface 24 in a state in which the graphite sheet 20 jumps in a direction away from the second surface 24 along the step surface, the key sheet is attached to the fourth surface 35 b of the graphite sheet 20. By not sticking 28, the key sheet 28 does not stick to the jumped up graphite sheet 20, and the work efficiency when the graphite sheet 20 is stuck can be improved.
  • the first non-adhesive sheet 42 is interposed between the step surface 25 and the second surface 24 of the upper cover 19 and the second region 47 of the graphite sheet 20.
  • the graphite sheet 20 (first adhesive material 41) is adhered (sticked) to the first surface 23 of the upper cover 19 as indicated by an arrow A.
  • the second region 47 becomes a step surface. 25 and the second surface 24 can be prevented from sticking to each other. Therefore, the position of the second region 47 of the graphite sheet 20 can be arbitrarily adjusted, and the graphite sheet 20 can be easily adapted to the step surface 25.
  • the graphite sheet 20 when the graphite sheet 20 is attached to the first surface 23, the graphite sheet 20 can be easily attached to the stepped surface 25 so as not to be floated. Accordingly, it is possible to improve the working efficiency when the graphite sheet 20 is pasted.
  • the key substrate 26 (substrate sheet 27a) is attached to the sixth region 33 of the graphite sheet 20 via the second adhesive 43 as shown by the arrow B (attachment).
  • the second non-adhesive sheet 44 is disposed in the fifth region 32 (second adhesive material 43) of the graphite sheet 20.
  • the key sheet 28 is fixed (arranged) to the second surface 24 by connecting (contacting) the contact portion 29 of the key sheet 28 to the second surface 24 as indicated by an arrow C.
  • the key substrate 26 can be covered with the key sheet 28.
  • the second non-adhesive sheet 44 can prevent the key sheet 28 from sticking to the fifth region 32 of the graphite sheet 20.
  • the electronic device 100 of the comparative example is obtained by replacing the graphite sheet 20 (see FIG. 4) of the first embodiment with a graphite sheet 102, and other configurations are the same as those of the first embodiment. The same as the electronic device 10.
  • the graphite sheet 102 is obtained by removing the first non-adhesive sheet 42 and the second non-adhesive sheet 44 (see FIG. 4) from the graphite sheet 20 of the first embodiment, and the other configuration is the graphite sheet 20 of the first embodiment. Is the same.
  • the second region 47 of the graphite sheet 102 adheres to the step surface 25 and the second surface 24 (in FIG. 5, the second region 47 is only on the second surface 24. An example of sticking is shown), and the movement of the second region 47 is restricted. By restricting the movement of the second region 47, the region 47 a of the second region 47 is lifted from the step surface 25 as shown in FIG. 5.
  • the graphite sheet 102 it is difficult to attach the graphite sheet 102 so that the graphite sheet 102 does not float while being familiar with the stepped surface 25.
  • the key board 26 specifically, the end portion 27c of the substrate sheet 27a
  • the panel switch 27b may cause a click failure.
  • the peripheral portion 28 b of the key sheet 28 (specifically, the fifth region 32 of the graphite sheet 102 through the second adhesive material 43).
  • the vicinity 28c) of the peripheral portion 28b adheres. For this reason, there exists a possibility that the vicinity 28c of the surrounding part 28b may be dented in a concave shape and an external appearance property cannot be maintained favorable.
  • the electronic device 10 according to the first embodiment shown in FIGS. 3 to 4 can prevent the graphite switch 20 from being lifted by the first non-adhesive sheet 42 and prevent the click failure of the panel switch 27b. Further, the electronic device 10 of the first embodiment prevents the peripheral portion 28b of the key sheet 28 (specifically, the vicinity 28c of the peripheral portion 28b) from sticking to the graphite sheet 20 with the second non-adhesive sheet 44. Can do. Thereby, it can suppress that the vicinity 28c of the surrounding part 28b is dented in a concave shape, and can maintain favorable external appearance property.
  • an electronic apparatus 70 according to the second embodiment of the present invention is obtained by replacing the graphite sheet 20 of the first embodiment with a graphite sheet 72, and other configurations are the same as those of the first embodiment. The same as the electronic device 10.
  • the graphite sheet 72 replaces the first adhesive material 41 (see FIG. 4) of the graphite sheet 20 provided in the first embodiment with the first adhesive material 74, and replaces the second adhesive material 43 (see FIG. 4) with the second adhesive material.
  • the other configuration (such as the first non-adhesive sheet 42 and the second non-adhesive sheet 44) is the same as that of the graphite sheet 20 of the first embodiment.
  • the first adhesive material 74 is provided in the third region 48 of the third surface 35 a of the sheet main body 35 that faces the first surface 23. That is, the third region 48 of the sheet main body 35 has adhesiveness.
  • the first non-adhesive sheet 42 is provided in a second region 47 facing the step surface 25 and the second surface 24 on the third surface 35 a of the sheet body 35.
  • the third region 48 of the third surface 35 a is adhered to the first surface 23 via the first adhesive material 74.
  • the third surface 35a of the graphite sheet 72 is similar to the first embodiment in that the third region 48 adheres to the first surface 23 and the second region 47 includes the step surface 25 and the first surface 35a. 2 is formed so as not to stick to the second surface 24.
  • the electronic device 70 of the second embodiment as in the electronic device 10 of the first embodiment, it is possible to obtain good heat dissipation and to prevent a click failure of the panel switch 27b. Furthermore, according to the electronic device 70 of the second embodiment, as in the first embodiment, the heat transfer function of the graphite sheet 72 is kept good, and the work efficiency when the graphite sheet 72 is attached is improved. Can do.
  • the second adhesive material 76 is provided in the sixth region 33 facing the first surface 23 in the fourth surface 35 b of the graphite sheet 72. That is, the sixth region 33 of the graphite sheet 20 has adhesiveness.
  • the second non-adhesive sheet 44 is provided in the fifth region 32 of the fourth surface 35 b of the graphite sheet 72 facing the step surface 25 and the second surface 24.
  • the sixth region 33 of the fourth surface 35 b is adhered to the key substrate 26 (substrate sheet 27 a) via the second adhesive material 76.
  • the fourth surface 35b of the graphite sheet 72 is similar to the first embodiment in that the sixth region 33 adheres to the key substrate 26 (substrate sheet 27a) and the fifth region 32 has the key sheet. It is formed so as not to stick to 28.
  • the key board 26 is securely fixed and the depression of the key sheet 28 (the vicinity 28c of the peripheral portion 28b) is suppressed.
  • the property can be kept good.
  • the first adhesive material 74 is provided in the third region 48
  • the second adhesive material 76 is provided in the sixth region 33.
  • the thickness can be reduced compared to the case where the first adhesive material and the first non-adhesive sheet are laminated on the step surface 25 and the second surface 24.
  • a foldable portable terminal is illustrated as an electronic device.
  • the electronic device is not limited to a foldable portable terminal, and can be applied to other electronic devices. is there.
  • the electronic device upper cover, graphite sheet, recess, first surface, second surface, step surface, key substrate, key sheet, peripheral portion, fourth portion used in the first to second embodiments Area, fifth area, sixth area, sheet body, third surface, fourth surface, graphite, first adhesive material, first non-adhesive sheet, second adhesive material, second non-adhesive sheet,
  • the shapes and configurations of the contact portion, the first region, the second region, the third region, and the like are not limited to those illustrated, and can be changed as appropriate.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Set Structure (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Push-Button Switches (AREA)

Abstract

Disclosed is an electronic device capable of obtaining desirable heat radiation by way of a graphite sheet making reliable surface contact upon the metallic surface of the casing thereof. The electronic device (10) comprises an upper cover (19), further comprising a depression portion (22); and a graphite sheet (20) disposed upon the depression (22). The upper cover (19) further comprises a first face (23) that is the bottom face of the depression (22); a second face (24) that is the top face of the depression; and a ramp face (25) that spans the space between the first face and the second face. The graphite sheet is configured such that a third region (48) of a third face (35a) is adhered to the first face, and a second region (47) of the third face (35a) is not adhered to either the ramp face or the second face.

Description

電子機器Electronics
　本発明は、筐体およびキー基板間に熱伝導率の高いグラファイトシートを備えた電子機器に関するものである。 The present invention relates to an electronic device including a graphite sheet having high thermal conductivity between a casing and a key substrate.
　電子機器として、下筐体（筐体）および上筐体が連結部で折畳み自在に連結され、下筐体に操作部が設けられ、上筐体に表示部が設けられた折り畳み式携帯端末が知られている。
　操作部は、平坦な金属面を有する下筐体と、下筐体の金属面に粘着固定されたグラファイトシートと、グラファイトシートに重ねられたキー基板と、キー基板を覆うキーシートとを備えている。
　グラファイトシートは熱伝導率の高いグラファイトを備えている（例えば、特許文献１、２参照）。 As an electronic device, there is a foldable portable terminal in which a lower housing (housing) and an upper housing are connected to each other in a foldable manner, an operation unit is provided in the lower housing, and a display unit is provided in the upper housing. Are known.
The operation unit includes a lower housing having a flat metal surface, a graphite sheet adhesively fixed to the metal surface of the lower housing, a key substrate overlaid on the graphite sheet, and a key sheet covering the key substrate. Yes.
The graphite sheet includes graphite having high thermal conductivity (see, for example, Patent Documents 1 and 2).
　グラファイトシートを下筐体の金属面に粘着固定することで、熱伝導率の高いグラファイトで金属面の熱を効果的に放熱することが可能である。 By sticking and fixing the graphite sheet to the metal surface of the lower housing, it is possible to effectively dissipate the heat of the metal surface with graphite having high thermal conductivity.
日本国特開２０００－３１１０５０号公報Japanese Unexamined Patent Publication No. 2000-311050 日本国特開２００１－２１０７６１号公報Japanese Unexamined Patent Publication No. 2001-210761
　ここで、下筐体（金属面）の熱をグラファイトシートで効果的に放熱するためには、金属面の熱をグラファイトシート（具体的には、グラファイト）に良好に伝える必要がある。
　下筐体（金属面）の熱をグラファイトシートに良好に伝えるためには、下筐体（金属面）に対してグラファイトシートを確実に面接触させる必要がある。 Here, in order to effectively dissipate the heat of the lower housing (metal surface) with the graphite sheet, it is necessary to transfer the heat of the metal surface to the graphite sheet (specifically, graphite) well.
In order to transfer the heat of the lower housing (metal surface) to the graphite sheet satisfactorily, the graphite sheet needs to be brought into surface contact with the lower housing (metal surface).
　本発明は、前述した課題を解決するためになされたものであり、その目的は、筐体の金属面にグラファイトシートを確実に面接触させることにより、良好な放熱性が得られる電子機器を提供することにある。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electronic device capable of obtaining good heat dissipation by reliably bringing a graphite sheet into surface contact with a metal surface of a housing. There is to do.
　本発明は、凹部の底面である第１の面と、前記凹部の頂面である第２の面と、前記第１の面と前記第２の面との間に掛け渡された段差面と、を備える筐体と、第３の面と、前記第３の面と反対の第４の面と、前記第３の面と前記第４の面の間にグラファイトとを備え、前記第３の面が、前記第１の面と前記段差面と前記第２の面に倣って配置されたグラファイトシートと、前記グラファイトシートの前記第４の面において、前記第１の面に対応する領域に配置されたキー基板と、前記キー基板と、前記グラファイトシートの前記段差面と前記第２の面に配置された部分と、を覆うキーシートとを備え、前記グラファイトシートの第３の面は、前記第１の面に粘着するとともに、前記段差面および前記第２の面に粘着しない。 The present invention includes a first surface that is a bottom surface of a recess, a second surface that is a top surface of the recess, and a step surface spanned between the first surface and the second surface. , A third surface, a fourth surface opposite to the third surface, and graphite between the third surface and the fourth surface, A surface is disposed in a region corresponding to the first surface in the fourth surface of the graphite sheet, the graphite sheet disposed following the first surface, the stepped surface, and the second surface. A key sheet covering the key board, the key board, the stepped surface of the graphite sheet, and the portion disposed on the second surface, and the third surface of the graphite sheet includes It adheres to the first surface and does not adhere to the step surface and the second surface.
　このような本発明においては、グラファイトシートの第３の面を第１の面に粘着させるようにした。グラファイトシートの第３の面を第１の面に粘着することで、第１の面（例えば、金属面）に対してグラファイトシートを確実に面接触させることができる。
　これにより、第１の面（金属面）の熱をグラファイトシートに好適に伝え、良好な放熱性を得ることができる。 In the present invention as described above, the third surface of the graphite sheet is adhered to the first surface. By sticking the third surface of the graphite sheet to the first surface, the graphite sheet can be reliably brought into surface contact with the first surface (for example, a metal surface).
Thereby, the heat of a 1st surface (metal surface) can be suitably transmitted to a graphite sheet, and favorable heat dissipation can be obtained.
　ここで、段差面や第２の面にグラファイトシートを粘着させた場合、第２の面に粘着したグラファイトシートの移動が規制され、グラファイトシートを段差面に馴染ませることが難しい。
　このため、グラファイトシートを段差面に馴染ませつつグラファイトシートに浮きが発生しないように張り付けることは難しい。
　そこで、段差面および第２の面にグラファイトシートの第３の面を粘着しないようにすることで、グラファイトシートの移動を許容してグラファイトシートを段差面に馴染ませることができるようにした。 Here, when the graphite sheet is adhered to the step surface or the second surface, the movement of the graphite sheet adhered to the second surface is restricted, and it is difficult to adapt the graphite sheet to the step surface.
For this reason, it is difficult to stick the graphite sheet so as not to float while allowing the graphite sheet to conform to the stepped surface.
Therefore, by preventing the third surface of the graphite sheet from sticking to the step surface and the second surface, the graphite sheet can be allowed to move and become familiar with the step surface.
　よって、段差面に対して隙間がないように（すなわち、浮き上がらないように）グラファイトシートを配置できる。
　これにより、浮き上がったグラファイトシートでキー基板が捲かれるように変形することを抑えて、キー基板（具体的には、パネルスイッチ（ドームスイッチ））のクリック不良を防ぐことができる。 Therefore, the graphite sheet can be arranged so that there is no gap with respect to the step surface (that is, it does not float up).
Thereby, it is possible to prevent the key substrate from being deformed so as to be scratched by the lifted graphite sheet, and to prevent a click failure of the key substrate (specifically, the panel switch (dome switch)).
　さらに、キー基板（パネルスイッチ）近傍の段差面において、グラファイトシートが浮き上がることを抑えることで、キー基板（パネルスイッチ）の押し操作でグラファイトシートが繰り返し撓むことを防止できる。
　これにより、グラファイトシートの繰り返しの撓みでグラファイトが切断されることを防いで、グラファイトシートの熱伝達機能を良好に保つことができる。 Furthermore, it is possible to prevent the graphite sheet from being repeatedly bent by the pressing operation of the key substrate (panel switch) by suppressing the graphite sheet from floating on the step surface near the key substrate (panel switch).
Thereby, it can prevent that a graphite is cut | disconnected by the repeated bending of a graphite sheet, and can maintain the heat transfer function of a graphite sheet favorably.
　加えて、段差面や第２の面にグラファイトシートを粘着させないようにしてグラファイトシートの移動を許容することで、グラファイトシートを段差面に簡単に馴染ませることができる。
　よって、第１の面にグラファイトシートを張り付ける際に、グラファイトシートを段差面に馴染ませつつ浮きが発生しないように容易に張り付けることができる。
　これにより、グラファイトシートを張り付ける際の作業効率を向上させることができる。 In addition, by allowing the movement of the graphite sheet without adhering the graphite sheet to the step surface or the second surface, the graphite sheet can be easily adapted to the step surface.
Therefore, when the graphite sheet is attached to the first surface, the graphite sheet can be easily attached to the stepped surface so as not to be floated while being familiar with the stepped surface.
Thereby, the working efficiency at the time of sticking a graphite sheet can be improved.
　また、本発明は、前記グラファイトシートの第４の面は、前記キー基板に粘着するとともに、前記キーシートと粘着しない。 In the present invention, the fourth surface of the graphite sheet adheres to the key substrate and does not adhere to the key sheet.
　本発明においては、グラファイトシートの第４の面をキー基板に粘着することで、グラファイトシートの第４の面にキー基板を確実に固定できる。
　さらに、グラファイトシートが段差面に沿い第２の面より離れる方向に跳ね上がった状態でキーシートを第２の面に張り付ける場合でも、グラファイトシートの第４の面にキーシートを粘着しないことで、跳ね上がったグラファイトシートにキーシートが貼り付かなくなり、グラファイトシートを張り付ける際の作業効率を向上させることができる。 In the present invention, the key substrate can be securely fixed to the fourth surface of the graphite sheet by sticking the fourth surface of the graphite sheet to the key substrate.
Furthermore, even when the key sheet is pasted on the second surface in a state where the graphite sheet jumps up along the step surface in a direction away from the second surface, by not sticking the key sheet to the fourth surface of the graphite sheet, The key sheet is no longer attached to the jumped graphite sheet, and the work efficiency when attaching the graphite sheet can be improved.
　さらに、本発明は、前記キーシートは前記第２の面に接触する接触部を備え、前記キーシートと前記第２の面は前記接触部において固定される。 Further, according to the present invention, the key sheet includes a contact portion that contacts the second surface, and the key sheet and the second surface are fixed at the contact portion.
　本発明においては、キーシートおよび第２の面が接触部において固定されるため、キーシートと第２の面との間に空間を形成でき、これによりキーシートと第２の面との間においてグラファイトシートの移動を許容できる。 In the present invention, since the key sheet and the second surface are fixed at the contact portion, a space can be formed between the key sheet and the second surface, whereby the key sheet and the second surface can be formed. The movement of the graphite sheet can be allowed.
　また、本発明は、前記接触部は、前記第２の面に配置されたキーシートの周部である。 Further, in the present invention, the contact portion is a peripheral portion of a key sheet disposed on the second surface.
　本発明においては、接触部を第２の面に配置したキーシートの周部とすることで、キーシートと第２の面との間においてグラファイトシートの移動を許容できる。 In the present invention, the movement of the graphite sheet can be allowed between the key sheet and the second surface by making the contact portion a peripheral portion of the key sheet disposed on the second surface.
　さらに、本発明は、前記グラファイトシートは、前記第３の面における、前記第１の面と前記段差面と前記第２の面に対面する領域において粘着性を有し、かつ前記段差面と前記第２の面に対面する領域において非粘着シートを備える。 Further, according to the present invention, the graphite sheet has adhesiveness in a region facing the first surface, the step surface, and the second surface in the third surface, and the step surface and the step A non-adhesive sheet is provided in a region facing the second surface.
　本発明においては、グラファイトシートの第３の面を第１の面に粘着させることができる。よって、第１の面（例えば、金属面）にグラファイトシートを確実に面接触させることができる。
　これにより、第１の面（金属面）の熱をグラファイトシートに好適に伝え、良好な放熱性を得ることができる。 In the present invention, the third surface of the graphite sheet can be adhered to the first surface. Therefore, the graphite sheet can be reliably brought into surface contact with the first surface (for example, a metal surface).
Thereby, the heat of a 1st surface (metal surface) can be suitably transmitted to a graphite sheet, and favorable heat dissipation can be obtained.
　また、グラファイトシートの第３の面が段差面や第２の面に粘着することを非粘着シートで防ぐことができる。
　よって、グラファイトシートの移動を許容してグラファイトシートを段差面に馴染ませることができるようにした。 Further, the non-adhesive sheet can prevent the third surface of the graphite sheet from adhering to the step surface or the second surface.
Therefore, the movement of the graphite sheet is allowed, so that the graphite sheet can be adjusted to the stepped surface.
　グラファイトシートを段差面に馴染ませることで、段差面に対して浮き上がらないようにグラファイトシートを配置できる。
　これにより、浮き上がったグラファイトシートでキー基板が捲かれるように変形することを抑えて、キー基板（パネルスイッチ）のクリック不良を防ぐことができる。 By fitting the graphite sheet into the stepped surface, the graphite sheet can be arranged so that it does not float on the stepped surface.
Thereby, it is possible to prevent the key substrate from being deformed so as to be scratched by the floated graphite sheet, and to prevent a click failure of the key substrate (panel switch).
　さらに、キー基板（パネルスイッチ）近傍の段差面において、グラファイトシートが浮き上がることを抑えることで、キー基板（パネルスイッチ）の押し操作でグラファイトシートが繰り返し撓むことを防止できる。
　これにより、グラファイトシートの繰り返しの撓みでグラファイトが切断されることを防いで、グラファイトシートの熱伝達機能を良好に保つことができる。 Furthermore, it is possible to prevent the graphite sheet from being repeatedly bent by the pressing operation of the key substrate (panel switch) by suppressing the graphite sheet from floating on the step surface near the key substrate (panel switch).
Thereby, it can prevent that a graphite is cut | disconnected by the repeated bending of a graphite sheet, and can maintain the heat transfer function of a graphite sheet favorably.
　加えて、段差面や第２の面にグラファイトシートを粘着させないことで、段差面にグラファイトシートを簡単に馴染ませることができる。
　よって、第１の面にグラファイトシートを張り付ける際に、グラファイトシートを段差面に馴染ませつつ浮きが発生しないように容易に張り付けることができる。
　これにより、グラファイトシートを張り付ける際の作業効率を向上させることができる。 In addition, the graphite sheet can be easily adapted to the step surface by not sticking the graphite sheet to the step surface or the second surface.
Therefore, when the graphite sheet is attached to the first surface, the graphite sheet can be easily attached to the stepped surface so as not to be floated while being familiar with the stepped surface.
Thereby, the working efficiency at the time of sticking a graphite sheet can be improved.
　また、本発明は、前記グラファイトシートは、前記第４の面における、前記第１の面と前記段差面と前記第２の面に対面する領域において粘着性を有し、かつ前記段差面と前記第２の面に対面する領域において非粘着シートを備える。 Further, in the present invention, the graphite sheet has adhesiveness in a region facing the first surface, the step surface, and the second surface in the fourth surface, and the step surface and the step A non-adhesive sheet is provided in a region facing the second surface.
　本発明においては、グラファイトシートの第４の面における第１の面に対面する領域に粘着性を有することで、グラファイトシートの第４の面にキー基板を粘着できる。
　これにより、グラファイトシートの第４の面にキー基板を確実に固定できる。 In the present invention, the key substrate can be adhered to the fourth surface of the graphite sheet by having the adhesiveness in the region facing the first surface of the fourth surface of the graphite sheet.
Thereby, a key board | substrate can be reliably fixed to the 4th surface of a graphite sheet.
　また、グラファイトシートの第４の面にキーシートが粘着することを非粘着シートで防ぐことができる。よって、キーシートがグラファイトシートの第４の面に粘着して凹状に凹むことを防止できる。
　これにより、キーシートが凹んで外観不良になることを防いで、外観性を良好に保つことができる。 Further, the non-adhesive sheet can prevent the key sheet from sticking to the fourth surface of the graphite sheet. Therefore, it can prevent that a key sheet adheres to the 4th surface of a graphite sheet, and is dented in a concave shape.
Thereby, it can prevent that a key sheet | seat is dented and it becomes bad appearance, and can maintain favorable external appearance property.
　本発明の電子機器によれば、グラファイトシートの第３の面を筐体（第１の面）に粘着することで、第１の面の金属面に対してグラファイトシートを確実に面接触させることができ、良好な放熱性が得られるという効果を有する。 According to the electronic device of the present invention, the graphite sheet is securely brought into surface contact with the metal surface of the first surface by adhering the third surface of the graphite sheet to the housing (first surface). It has the effect that favorable heat dissipation is obtained.
本発明に係る第１実施形態の電子機器を示す斜視図The perspective view which shows the electronic device of 1st Embodiment which concerns on this invention. 第１実施形態の電子機器を示す分解斜視図The disassembled perspective view which shows the electronic device of 1st Embodiment 図１のＡ－Ａ線断面図AA line sectional view of FIG. 図３の電子機器を分解した状態を示す断面図Sectional drawing which shows the state which decomposed | disassembled the electronic device of FIG. 比較例の電子機器を示す断面図Sectional drawing which shows the electronic device of a comparative example 図５の電子機器を分解した状態を示す断面図Sectional drawing which shows the state which decomposed | disassembled the electronic device of FIG. 第２実施形態の電子機器を示す断面図Sectional drawing which shows the electronic device of 2nd Embodiment 図７の電子機器を分解した状態を示す断面図Sectional drawing which shows the state which decomposed | disassembled the electronic device of FIG.
　以下、本発明の複数の実施の形態に係る電子機器１０について図面を参照して説明する。 Hereinafter, electronic devices 10 according to a plurality of embodiments of the present invention will be described with reference to the drawings.
（第１実施形態）
　図１に示すように、本発明の第１実施形態である電子機器１０は、操作部１２が設けられた下筐体１１と、表示部１５が設けられた上筐体１４と、下筐体１１および上筐体１４を折畳み自在に連結する連結部１７と、下筐体１１および操作部１２間に配置されたグラファイトシート２０（図２参照）とを備えた折り畳み式携帯端末である。 (First embodiment)
As shown in FIG. 1, the electronic device 10 according to the first embodiment of the present invention includes a lower casing 11 provided with an operation unit 12, an upper casing 14 provided with a display unit 15, and a lower casing. 11 is a foldable portable terminal that includes a connecting portion 17 that foldably connects the upper housing 14 and the upper housing 14, and a graphite sheet 20 (see FIG. 2) disposed between the lower housing 11 and the operation portion 12.
　なお、第１実施形態では電子機器１０として折り畳み式携帯端末を例示するが、電子機器１０は折り畳み式携帯端末に限定するものではなく、他の電子機器に適用することも可能である。 In the first embodiment, a foldable mobile terminal is exemplified as the electronic device 10, but the electronic device 10 is not limited to a foldable mobile terminal, and can be applied to other electronic devices.
　下筐体１１は、下筐体１１の下部を構成する下カバー１８と、下カバー１８の上部に設けられた上カバー（筐体）１９とで筐体状に形成されている。 The lower casing 11 is formed in a casing shape by a lower cover 18 constituting a lower portion of the lower casing 11 and an upper cover (housing) 19 provided on the upper portion of the lower cover 18.
　図２～図４に示すように、上カバー１９は、凹部２２の底面である第１の面２３と、凹部２２の頂面である第２の面２４と、第１の面２３および第２の面２４間に掛け渡された段差面２５とを備えている。 As shown in FIGS. 2 to 4, the upper cover 19 includes a first surface 23 that is the bottom surface of the recess 22, a second surface 24 that is the top surface of the recess 22, the first surface 23, and the second surface And a step surface 25 spanned between the two surfaces 24.
　第１の面２３は、凹部２２の底面を形成する水平面である。
　第２の面２４は、凹部２２の頂面（すなわち、第１の面２３より上方の面）を形成する水平面である。
　段差面２５は、第１の面２３から第２の面２４に向けて上り勾配に延びる傾斜面である。
　第１の面２３、第２の面２４および段差面２５は金属板（すなわち、金属面）で形成されている。この金属板は上カバー１９にインサート成型されている。 The first surface 23 is a horizontal plane that forms the bottom surface of the recess 22.
The second surface 24 is a horizontal surface that forms the top surface of the recess 22 (that is, the surface above the first surface 23).
The step surface 25 is an inclined surface extending upwardly from the first surface 23 toward the second surface 24.
The 1st surface 23, the 2nd surface 24, and the level | step difference surface 25 are formed with the metal plate (namely, metal surface). This metal plate is insert-molded in the upper cover 19.
　操作部１２は、グラファイトシート２０に配置されたキー基板２６と、キー基板２６を覆うキーシート２８とを備えている。
　キー基板２６は、グラファイトシート２０に配置された基板シート２７ａと、基板シート２７ａに設けられたパネルスイッチ（ドームスイッチ）２７ｂとを備えている。 The operation unit 12 includes a key substrate 26 disposed on the graphite sheet 20 and a key sheet 28 that covers the key substrate 26.
The key substrate 26 includes a substrate sheet 27a disposed on the graphite sheet 20 and a panel switch (dome switch) 27b provided on the substrate sheet 27a.
　基板シート２７ａは、グラファイトシート２０の第４の面３５ｂにおいて第６の領域（領域）３３に配置された可撓性の放熱性ＦＰＣシートである。
　第６の領域３３は、グラファイトシート２０の第４の面３５ｂにおいて、第１の面２３に対応（対面）する領域である。 The substrate sheet 27 a is a flexible heat-dissipating FPC sheet disposed in the sixth region (region) 33 on the fourth surface 35 b of the graphite sheet 20.
The sixth region 33 is a region corresponding to (facing to) the first surface 23 in the fourth surface 35 b of the graphite sheet 20.
　キーシート２８は、キー基板２６と、グラファイトシート２０の第５の領域３２とを覆うとともに、キー押圧部２８ａを備えた部材である。
　第５の領域３２は、グラファイトシート２０（第４の面３５ｂ）のうち段差面２５と第２の面２４に配置された（対面する）領域である。
　キーシート２８のキー押圧部２８ａを押圧することで、パネルスイッチ２７ｂをオフからオンに切り替えることができる。 The key sheet 28 is a member that covers the key substrate 26 and the fifth region 32 of the graphite sheet 20 and includes a key pressing portion 28a.
The fifth region 32 is a region disposed (facing) on the step surface 25 and the second surface 24 of the graphite sheet 20 (fourth surface 35b).
By pressing the key pressing portion 28a of the key sheet 28, the panel switch 27b can be switched from OFF to ON.
　このキーシート２８は、キーシート２８を上カバー１９の第２の面２４に接続する接触部２９を備えている。
　接触部２９は、キーシート２８の周部２８ｂに備えられるとともに第２の面２４に接続（接触）することで、キーシート２８を第２の面２４に固定（配置）する部材である。
　キーシート２８および第２の面２４を接触部２９で固定することで、キーシート２８と第２の面２４との間に空間を形成でき、これによりキーシート２８と第２の面２４との間においてグラファイトシート２０の移動を許容できる。
　さらに、接触部２９を第２の面２４に配置したキーシート２８の周部２８ｂとすることで、キーシート２８と第２の面２４との間においてグラファイトシート２０の移動を許容できる。 The key sheet 28 includes a contact portion 29 that connects the key sheet 28 to the second surface 24 of the upper cover 19.
The contact portion 29 is a member that is provided on the peripheral portion 28 b of the key sheet 28 and is fixed (arranged) to the second surface 24 by being connected (contacted) to the second surface 24.
By fixing the key sheet 28 and the second surface 24 with the contact portion 29, a space can be formed between the key sheet 28 and the second surface 24, whereby the key sheet 28 and the second surface 24 The graphite sheet 20 can be allowed to move between the two.
Further, by making the contact portion 29 the peripheral portion 28 b of the key sheet 28 disposed on the second surface 24, the movement of the graphite sheet 20 can be allowed between the key sheet 28 and the second surface 24.
　グラファイトシート２０は、凹部２２（第１の面２３、第２の面２４および段差面２５）に沿って配置されたシート本体３５と、シート本体３５内に収容されたグラファイト３６とを備えた可撓性のシートである。
　グラファイト３６は可撓性と高い熱伝導性を備えるが、割れやすい部材である。そこでグラファイト３６をシート本体３５内に収容することで、グラファイトシート２０は可撓性及び放熱性を備えるとともに、割れにくいシートの形状に形成されている。 The graphite sheet 20 includes a sheet main body 35 disposed along the concave portion 22 (the first surface 23, the second surface 24, and the step surface 25), and a graphite 36 accommodated in the sheet main body 35. It is a flexible sheet.
Graphite 36 is flexible and has high thermal conductivity, but is a fragile member. Therefore, by accommodating the graphite 36 in the sheet main body 35, the graphite sheet 20 has flexibility and heat dissipation and is formed into a sheet shape that is difficult to break.
　シート本体３５は、上カバー１９側に位置する第３の面３５ａと、第３の面３５ａの反対（すなわち、キーシート２８側）に位置する第４の面３５ｂとを有する可撓性のシートである。
　そして、第３の面３５ａおよび第４の面３５ｂ間にグラファイト３６が備えられている。
　シート本体３５の第３の面３５ａは、第１の面２３、段差面２５および第２の面２４に倣って配置（形成）されている。 The sheet main body 35 is a flexible sheet having a third surface 35a located on the upper cover 19 side and a fourth surface 35b located opposite to the third surface 35a (that is, on the key sheet 28 side). It is.
And the graphite 36 is provided between the 3rd surface 35a and the 4th surface 35b.
The third surface 35 a of the sheet body 35 is arranged (formed) following the first surface 23, the step surface 25, and the second surface 24.
　このグラファイトシート２０は、シート本体３５の第３の面３５ａに備えられた第１粘着材４１と、第１粘着材４１および上カバー１９間に配置された第１非粘着シート（非粘着シート）４２と、シート本体３５の第４の面３５ｂに備えられた第２粘着材４３と、第２粘着材４３および操作部１２（すなわち、キーシート２８）間に配置された第２非粘着シート（非粘着シート）４４とを備えている。 This graphite sheet 20 includes a first adhesive material 41 provided on the third surface 35a of the sheet body 35, and a first non-adhesive sheet (non-adhesive sheet) disposed between the first adhesive material 41 and the upper cover 19. 42, a second adhesive material 43 provided on the fourth surface 35b of the sheet main body 35, and a second non-adhesive sheet (between the second adhesive material 43 and the operation unit 12 (ie, the key sheet 28)) ( Non-adhesive sheet) 44.
　第１粘着材４１は、シート本体３５の第３の面３５ａにおける第１の領域（領域）４６に備えられている。
　第１の領域４６は、シート本体３５の第３の面３５ａにおける、第１の面２３、段差面２５および第２の面に対面する領域である。
　すなわち、シート本体３５の第１領域４６は粘着性を有している。 The first adhesive material 41 is provided in a first region (region) 46 on the third surface 35 a of the sheet main body 35.
The first region 46 is a region facing the first surface 23, the step surface 25, and the second surface in the third surface 35 a of the sheet main body 35.
That is, the first region 46 of the sheet main body 35 has adhesiveness.
　第１非粘着シート４２は、シート本体３５の第３の面３５ａにおける第２の領域（領域）４７（具体的には、第１粘着材４１）に備えられている。
　第２の領域４７は、シート本体３５の第３の面３５ａにおける、段差面２５と第２の面２４に対面する領域である。
　そして、第３の面３５ａの第３の領域４８が第１粘着材４１を介して第１の面２３に粘着されている。第３の領域４８は、シート本体３５の第３の面３５ａにおける第１の面２３に対面する領域である。 The first non-adhesive sheet 42 is provided in a second region (region) 47 (specifically, the first adhesive material 41) in the third surface 35 a of the sheet main body 35.
The second region 47 is a region facing the step surface 25 and the second surface 24 in the third surface 35 a of the sheet main body 35.
The third region 48 of the third surface 35 a is adhered to the first surface 23 via the first adhesive material 41. The third region 48 is a region facing the first surface 23 in the third surface 35 a of the sheet main body 35.
　換言すれば、グラファイトシート２０の第３の面３５ａは、第３の領域４８が第１の面２３に粘着するとともに、第２の領域４７が段差面２５および第２の面２４に粘着しないように形成されている。 In other words, the third surface 35 a of the graphite sheet 20 is such that the third region 48 adheres to the first surface 23 and the second region 47 does not adhere to the step surface 25 and the second surface 24. Is formed.
　グラファイトシート２０の第３の領域４８を第１の面２３に粘着することで、第１の面２３（金属面）に対してグラファイトシート２０を確実に面接触させることができる。
　これにより、第１の面２３（金属面）の熱をグラファイトシート２０に好適に伝え、良好な放熱性を得ることができる。 By sticking the third region 48 of the graphite sheet 20 to the first surface 23, the graphite sheet 20 can be reliably brought into surface contact with the first surface 23 (metal surface).
Thereby, the heat of the 1st surface 23 (metal surface) can be suitably transmitted to the graphite sheet 20, and favorable heat dissipation can be obtained.
　ここで、段差面２５や第１の面２３にグラファイトシート２０の第２の領域４７を粘着させた場合、第２の領域４７の移動が規制されてしまう。
　このため、グラファイトシート２０を段差面２５に馴染ませつつグラファイトシート２０に浮きが発生しないように張り付けることは難しい。
　そこで、グラファイトシート２０の第２の領域４７が段差面２５および第２の面２４に粘着することを第１非粘着シート４２で防ぐようにした。 Here, when the second region 47 of the graphite sheet 20 is adhered to the step surface 25 or the first surface 23, the movement of the second region 47 is restricted.
For this reason, it is difficult to attach the graphite sheet 20 so that the graphite sheet 20 does not float while being familiar with the stepped surface 25.
Therefore, the first non-adhesive sheet 42 prevents the second region 47 of the graphite sheet 20 from sticking to the step surface 25 and the second surface 24.
　よって、グラファイトシート２０の第２の領域４７の移動を可能にして第２の領域４７を段差面２５に馴染ませることができる。第２の領域４７を段差面２５に馴染ませることで、グラファイトシート２０を段差面２５に対して浮き上がらないように配置できる。
　これにより、浮き上がったグラファイトシート２０でキー基板２６（具体的には、基板シート２７ａ）が捲かれるように変形することを抑えることができる。
　したがって、キーシート２８のキー押圧部２８ａを押圧したときのパネルスイッチ２７ｂのクリック不良を防ぐことができる。 Therefore, the second region 47 of the graphite sheet 20 can be moved, and the second region 47 can be adapted to the step surface 25. The graphite sheet 20 can be arranged so as not to float with respect to the step surface 25 by making the second region 47 conform to the step surface 25.
Thereby, it is possible to suppress the key substrate 26 (specifically, the substrate sheet 27a) from being deformed so as to be scratched by the graphite sheet 20 that has been lifted.
Therefore, it is possible to prevent a click failure of the panel switch 27b when the key pressing portion 28a of the key sheet 28 is pressed.
　さらに、パネルスイッチ２７ｂの近傍に段差面２５が設けられている。よって、パネルスイッチ２７ｂの近傍の段差面２５において、グラファイトシート２０が浮き上がることを抑えることで、キー押圧部２８ａの押し操作でグラファイトシート２０が繰り返し撓むことを防止できる。
　これにより、グラファイトシート２０の繰り返しの撓みでグラファイト３６が切断されることを防いで、グラファイトシート２０の熱伝達機能を良好に保つことができる。 Further, a step surface 25 is provided in the vicinity of the panel switch 27b. Therefore, it is possible to prevent the graphite sheet 20 from being repeatedly bent by the pressing operation of the key pressing portion 28a by suppressing the graphite sheet 20 from floating on the step surface 25 in the vicinity of the panel switch 27b.
Thereby, the graphite 36 is prevented from being cut by repeated bending of the graphite sheet 20, and the heat transfer function of the graphite sheet 20 can be kept good.
　第２粘着材４３は、グラファイトシート２０の第４の面３５ｂにおける第４の領域（領域）３１に備えられている。
　第４の領域３１は、グラファイトシート２０の第４の面３５ｂにおける、第１の面２３、段差面２５および第２の面に対面する領域である。
　すなわち、グラファイトシート２０の第４の領域３１は粘着性を有している。 The second adhesive material 43 is provided in the fourth region (region) 31 on the fourth surface 35 b of the graphite sheet 20.
The fourth region 31 is a region facing the first surface 23, the step surface 25, and the second surface in the fourth surface 35 b of the graphite sheet 20.
That is, the 4th area | region 31 of the graphite sheet 20 has adhesiveness.
　第２非粘着シート４４は、グラファイトシート２０の第４の面３５ｂにおける第５の領域（部分、領域）３２（具体的には、第２粘着材４３）に備えられている。
　第５の領域３２は、グラファイトシート２０の第４の面３５ｂにおける、段差面２５と第２の面２４に対面する領域である。
　そして、第４の面３５ｂの第６の領域３３が第２粘着材４３を介してキー基板２６の基板シート２７ａに粘着されている。 The second non-adhesive sheet 44 is provided in the fifth region (part, region) 32 (specifically, the second adhesive material 43) on the fourth surface 35b of the graphite sheet 20.
The fifth region 32 is a region facing the step surface 25 and the second surface 24 on the fourth surface 35 b of the graphite sheet 20.
The sixth area 33 of the fourth surface 35 b is adhered to the substrate sheet 27 a of the key substrate 26 via the second adhesive material 43.
　換言すれば、グラファイトシート２０の第４の面３５ｂは、第６の領域３３がキー基板２６（基板シート２７ａ）に粘着するとともに、第５の領域３２がキーシート２８（具体的には、周部２８ｂの近傍２８ｃ）に粘着しないように形成されている。
　グラファイトシート２０の第６の領域３３にキー基板２６を粘着することで、グラファイトシート２０の第４の面３５ｂにキー基板２６を確実に固定できる。 In other words, the fourth surface 35b of the graphite sheet 20 is such that the sixth region 33 adheres to the key substrate 26 (substrate sheet 27a) and the fifth region 32 has the key sheet 28 (specifically, the circumferential surface). It is formed so as not to stick to the vicinity 28c) of the portion 28b.
By sticking the key substrate 26 to the sixth region 33 of the graphite sheet 20, the key substrate 26 can be reliably fixed to the fourth surface 35 b of the graphite sheet 20.
　さらに、グラファイトシート２０の第５の領域３２にキーシート２８（周部２８ｂの近傍２８ｃ）が粘着することを第２非粘着シート４４で防ぐことができる。
　よって、キーシート２８（周部２８ｂの近傍２８ｃ）がグラファイトシート２０の第５の領域３２に粘着して凹状に凹むことを防止できる。
　これにより、キーシート２８（周部２８ｂの近傍２８ｃ）が凹んで外観不良になることを防いで、外観性を良好に保つことができる。
　さらに、グラファイトシート２０が段差面に沿い第２の面２４より離れる方向に跳ね上がった状態でキーシート２８を第２の面２４に張り付ける場合でも、グラファイトシート２０の第４の面３５ｂにキーシート２８を粘着しないことで、跳ね上がったグラファイトシート２０にキーシート２８が貼り付かなくなり、グラファイトシート２０を張り付ける際の作業効率を向上させることができる。 Further, the second non-adhesive sheet 44 can prevent the key sheet 28 (the vicinity 28 c of the peripheral portion 28 b) from adhering to the fifth region 32 of the graphite sheet 20.
Therefore, it is possible to prevent the key sheet 28 (the vicinity 28c of the peripheral portion 28b) from adhering to the fifth region 32 of the graphite sheet 20 and being recessed in a concave shape.
Thereby, it is possible to prevent the key sheet 28 (the vicinity 28c of the peripheral portion 28b) from being dented and to have a poor appearance, and to maintain a good appearance.
Further, even when the key sheet 28 is attached to the second surface 24 in a state in which the graphite sheet 20 jumps in a direction away from the second surface 24 along the step surface, the key sheet is attached to the fourth surface 35 b of the graphite sheet 20. By not sticking 28, the key sheet 28 does not stick to the jumped up graphite sheet 20, and the work efficiency when the graphite sheet 20 is stuck can be improved.
　つぎに、電子機器１０を組み付ける手順を図４に基づいて説明する。
　まず、上カバー１９の段差面２５および第２の面２４とグラファイトシート２０の第２の領域４７との間に第１非粘着シート４２を介在させる。
　グラファイトシート２０（第１粘着材４１）を上カバー１９の第１の面２３に矢印Ａのように粘着させる（張り付ける）。 Next, a procedure for assembling the electronic device 10 will be described with reference to FIG.
First, the first non-adhesive sheet 42 is interposed between the step surface 25 and the second surface 24 of the upper cover 19 and the second region 47 of the graphite sheet 20.
The graphite sheet 20 (first adhesive material 41) is adhered (sticked) to the first surface 23 of the upper cover 19 as indicated by an arrow A.
　ここで、上カバー１９の段差面２５および第２の面２４とグラファイトシート２０の第２の領域４７との間に第１非粘着シート４２を介在させることで、第２の領域４７が段差面２５および第２の面２４に粘着すること防ぐことができる。
　よって、グラファイトシート２０の第２の領域４７の位置を任意に調整してグラファイトシート２０を段差面２５に簡単に馴染ませることができる。 Here, by providing the first non-adhesive sheet 42 between the step surface 25 and the second surface 24 of the upper cover 19 and the second region 47 of the graphite sheet 20, the second region 47 becomes a step surface. 25 and the second surface 24 can be prevented from sticking to each other.
Therefore, the position of the second region 47 of the graphite sheet 20 can be arbitrarily adjusted, and the graphite sheet 20 can be easily adapted to the step surface 25.
　これにより、第１の面２３にグラファイトシート２０を張り付ける際に、グラファイトシート２０を段差面２５に馴染ませつつ浮きが発生しないように容易に張り付けることができる。
　したがって、グラファイトシート２０を張り付ける際の作業効率を向上させることができる。 Thereby, when the graphite sheet 20 is attached to the first surface 23, the graphite sheet 20 can be easily attached to the stepped surface 25 so as not to be floated.
Accordingly, it is possible to improve the working efficiency when the graphite sheet 20 is pasted.
　第１の面２３にグラファイトシート２０を張り付けた後、グラファイトシート２０の第６の領域３３に第２粘着材４３を介してキー基板２６（基板シート２７ａ）を矢印Ｂのように粘着する（張り付ける）。
　つぎに、グラファイトシート２０の第５の領域３２（第２粘着材４３）に第２非粘着シート４４を配置する。 After the graphite sheet 20 is attached to the first surface 23, the key substrate 26 (substrate sheet 27a) is attached to the sixth region 33 of the graphite sheet 20 via the second adhesive 43 as shown by the arrow B (attachment). )
Next, the second non-adhesive sheet 44 is disposed in the fifth region 32 (second adhesive material 43) of the graphite sheet 20.
　ついで、キーシート２８の接触部２９を矢印Ｃのように第２の面２４に接続（接触）することにより、キーシート２８を第２の面２４に固定（配置）する。
　これにより、キーシート２８でキー基板２６を覆うことができる。
　この状態において、グラファイトシート２０の第５の領域３２にキーシート２８が粘着することを第２非粘着シート４４で防ぐことができる。 Subsequently, the key sheet 28 is fixed (arranged) to the second surface 24 by connecting (contacting) the contact portion 29 of the key sheet 28 to the second surface 24 as indicated by an arrow C.
Thereby, the key substrate 26 can be covered with the key sheet 28.
In this state, the second non-adhesive sheet 44 can prevent the key sheet 28 from sticking to the fifth region 32 of the graphite sheet 20.
（比較例）
　図５～図６に示すように、比較例の電子機器１００は、第１実施形態のグラファイトシート２０（図４参照）をグラファイトシート１０２に代えたもので、その他の構成は第１実施形態の電子機器１０と同じである。 (Comparative example)
As shown in FIGS. 5 to 6, the electronic device 100 of the comparative example is obtained by replacing the graphite sheet 20 (see FIG. 4) of the first embodiment with a graphite sheet 102, and other configurations are the same as those of the first embodiment. The same as the electronic device 10.
　グラファイトシート１０２は、第１実施形態のグラファイトシート２０から第１非粘着シート４２および第２非粘着シート４４（図４参照）を除去したもので、その他の構成は第１実施形態のグラファイトシート２０と同じである。 The graphite sheet 102 is obtained by removing the first non-adhesive sheet 42 and the second non-adhesive sheet 44 (see FIG. 4) from the graphite sheet 20 of the first embodiment, and the other configuration is the graphite sheet 20 of the first embodiment. Is the same.
　比較例の電子機器１００によれば、段差面２５や第２の面２４にグラファイトシート１０２の第２の領域４７が粘着し（図５では、第２の領域４７が第２の面２４のみに粘着する例を示す）、第２の領域４７の移動が規制される。
　第２の領域４７の移動が規制されることで、図５に示すように、第２の領域４７のうち領域４７ａが段差面２５から浮き上がってしまう。 According to the electronic device 100 of the comparative example, the second region 47 of the graphite sheet 102 adheres to the step surface 25 and the second surface 24 (in FIG. 5, the second region 47 is only on the second surface 24. An example of sticking is shown), and the movement of the second region 47 is restricted.
By restricting the movement of the second region 47, the region 47 a of the second region 47 is lifted from the step surface 25 as shown in FIG. 5.
　よって、グラファイトシート１０２を段差面２５に馴染ませつつグラファイトシート１０２に浮きが発生しないように張り付けることは難しい。
　グラファイトシート１０２に浮きが発生することで、図５に示すように、浮き上がったグラファイトシート１０２でキー基板２６（具体的には、基板シート２７ａの端部２７ｃ）が捲かれるように変形する。
　このため、キーシート２８のキー押圧部２８ａを押圧したとき、パネルスイッチ２７ｂがクリック不良を生じる虞がある。 Therefore, it is difficult to attach the graphite sheet 102 so that the graphite sheet 102 does not float while being familiar with the stepped surface 25.
When the graphite sheet 102 is lifted, the key board 26 (specifically, the end portion 27c of the substrate sheet 27a) is deformed by the lifted graphite sheet 102 as shown in FIG.
For this reason, when the key pressing part 28a of the key sheet 28 is pressed, the panel switch 27b may cause a click failure.
　また、比較例の電子機器１００によれば、図５に示すように、グラファイトシート１０２の第５の領域３２に第２粘着材４３を介してキーシート２８の周部２８ｂ（具体的には、周部２８ｂの近傍２８ｃ）が粘着する。
　このため、周部２８ｂの近傍２８ｃが凹状に凹み、外観性を良好に保つことができない虞がある。 Further, according to the electronic device 100 of the comparative example, as shown in FIG. 5, the peripheral portion 28 b of the key sheet 28 (specifically, the fifth region 32 of the graphite sheet 102 through the second adhesive material 43). The vicinity 28c) of the peripheral portion 28b adheres.
For this reason, there exists a possibility that the vicinity 28c of the surrounding part 28b may be dented in a concave shape and an external appearance property cannot be maintained favorable.
　これに対して、図３～図４に示す第１実施形態の電子機器１０は、第１非粘着シート４２でグラファイトシート２０の浮き上がりを抑えてパネルスイッチ２７ｂのクリック不良を防ぐことができる。
　また、第１実施形態の電子機器１０は、第２非粘着シート４４でキーシート２８の周部２８ｂ（具体的には、周部２８ｂの近傍２８ｃ）がグラファイトシート２０に粘着することを防ぐことができる。
　これにより、周部２８ｂの近傍２８ｃが凹状に凹むことを抑えて外観性を良好に保つことができる。 On the other hand, the electronic device 10 according to the first embodiment shown in FIGS. 3 to 4 can prevent the graphite switch 20 from being lifted by the first non-adhesive sheet 42 and prevent the click failure of the panel switch 27b.
Further, the electronic device 10 of the first embodiment prevents the peripheral portion 28b of the key sheet 28 (specifically, the vicinity 28c of the peripheral portion 28b) from sticking to the graphite sheet 20 with the second non-adhesive sheet 44. Can do.
Thereby, it can suppress that the vicinity 28c of the surrounding part 28b is dented in a concave shape, and can maintain favorable external appearance property.
（第２実施形態）
　図７～図８に示すように、本発明の第２実施形態の電子機器７０は、第１実施形態のグラファイトシート２０をグラファイトシート７２に代えたもので、その他の構成は第１実施形態の電子機器１０と同じである。 (Second Embodiment)
As shown in FIGS. 7 to 8, an electronic apparatus 70 according to the second embodiment of the present invention is obtained by replacing the graphite sheet 20 of the first embodiment with a graphite sheet 72, and other configurations are the same as those of the first embodiment. The same as the electronic device 10.
　グラファイトシート７２は、第１実施形態に備えたグラファイトシート２０の第１粘着材４１（図４参照）を第１粘着材７４に代え、第２粘着材４３（図４参照）を第２粘着材７６に代えたもので、その他の構成（第１非粘着シート４２および第２非粘着シート４４など）は第１実施形態のグラファイトシート２０と同様である。 The graphite sheet 72 replaces the first adhesive material 41 (see FIG. 4) of the graphite sheet 20 provided in the first embodiment with the first adhesive material 74, and replaces the second adhesive material 43 (see FIG. 4) with the second adhesive material. The other configuration (such as the first non-adhesive sheet 42 and the second non-adhesive sheet 44) is the same as that of the graphite sheet 20 of the first embodiment.
　第１粘着材７４は、シート本体３５の第３の面３５ａにおける、第１の面２３に対面する第３の領域４８に備えられている。
　すなわち、シート本体３５の第３の領域４８は粘着性を有している。 The first adhesive material 74 is provided in the third region 48 of the third surface 35 a of the sheet main body 35 that faces the first surface 23.
That is, the third region 48 of the sheet main body 35 has adhesiveness.
　第１非粘着シート４２は、シート本体３５の第３の面３５ａにおける、段差面２５と第２の面２４に対面する第２の領域４７に備えられている。
　そして、第３の面３５ａの第３の領域４８が第１粘着材７４を介して第１の面２３に粘着されている。 The first non-adhesive sheet 42 is provided in a second region 47 facing the step surface 25 and the second surface 24 on the third surface 35 a of the sheet body 35.
The third region 48 of the third surface 35 a is adhered to the first surface 23 via the first adhesive material 74.
　換言すれば、グラファイトシート７２の第３の面３５ａは、第１実施形態と同様に、第３の領域４８が第１の面２３に粘着するとともに、第２の領域４７が段差面２５および第２の面２４に粘着しないように形成されている。 In other words, the third surface 35a of the graphite sheet 72 is similar to the first embodiment in that the third region 48 adheres to the first surface 23 and the second region 47 includes the step surface 25 and the first surface 35a. 2 is formed so as not to stick to the second surface 24.
　すなわち、第２実施形態の電子機器７０によれば、第１実施形態の電子機器１０と同様に、良好な放熱性を得ることや、パネルスイッチ２７ｂのクリック不良を防ぐことができる。
　さらに、第２実施形態の電子機器７０によれば、第１実施形態と同様に、グラファイトシート７２の熱伝達機能を良好に保つことや、グラファイトシート７２を張り付ける際の作業効率を向上させることができる。 That is, according to the electronic device 70 of the second embodiment, as in the electronic device 10 of the first embodiment, it is possible to obtain good heat dissipation and to prevent a click failure of the panel switch 27b.
Furthermore, according to the electronic device 70 of the second embodiment, as in the first embodiment, the heat transfer function of the graphite sheet 72 is kept good, and the work efficiency when the graphite sheet 72 is attached is improved. Can do.
　また、第２粘着材７６は、グラファイトシート７２の第４の面３５ｂにおける、第１の面２３に対面する第６の領域３３に備えられている。
　すなわち、グラファイトシート２０の第６の領域３３は粘着性を有している。 The second adhesive material 76 is provided in the sixth region 33 facing the first surface 23 in the fourth surface 35 b of the graphite sheet 72.
That is, the sixth region 33 of the graphite sheet 20 has adhesiveness.
　第２非粘着シート４４は、グラファイトシート７２の第４の面３５ｂにおける、段差面２５と第２の面２４に対面する第５の領域３２に備えられている。
　そして、第４の面３５ｂの第６の領域３３が第２粘着材７６を介してキー基板２６（基板シート２７ａ）に粘着されている。 The second non-adhesive sheet 44 is provided in the fifth region 32 of the fourth surface 35 b of the graphite sheet 72 facing the step surface 25 and the second surface 24.
The sixth region 33 of the fourth surface 35 b is adhered to the key substrate 26 (substrate sheet 27 a) via the second adhesive material 76.
　換言すれば、グラファイトシート７２の第４の面３５ｂは、第１実施形態と同様に、第６の領域３３がキー基板２６（基板シート２７ａ）に粘着するとともに、第５の領域３２がキーシート２８に粘着しないように形成されている。 In other words, the fourth surface 35b of the graphite sheet 72 is similar to the first embodiment in that the sixth region 33 adheres to the key substrate 26 (substrate sheet 27a) and the fifth region 32 has the key sheet. It is formed so as not to stick to 28.
　すなわち、第２実施形態の電子機器７０によれば、第１実施形態と同様に、キー基板２６を確実に固定することや、キーシート２８（周部２８ｂの近傍２８ｃ）の凹みを抑えて外観性を良好に保つことができる。
　ここで、第２実施形態の電子機器７０によれば、第１粘着材７４を第３の領域４８に備え、第２粘着材７６を第６の領域３３に備えることで、前述した第１実施形態のように段差面２５および第２の面２４において第１粘着材および第１非粘着シートが積層された場合に比較して薄型化できる。 That is, according to the electronic device 70 of the second embodiment, as in the first embodiment, the key board 26 is securely fixed and the depression of the key sheet 28 (the vicinity 28c of the peripheral portion 28b) is suppressed. The property can be kept good.
Here, according to the electronic device 70 of the second embodiment, the first adhesive material 74 is provided in the third region 48, and the second adhesive material 76 is provided in the sixth region 33. As in the embodiment, the thickness can be reduced compared to the case where the first adhesive material and the first non-adhesive sheet are laminated on the step surface 25 and the second surface 24.
　なお、本発明に係る電子機器は、前述した第１実施形態～第２実施形態に限定されるものではなく適宜変更、改良などが可能である。
　例えば、第１実施形態～第２実施形態では、電子機器として折り畳み式携帯端末を例示するが、電子機器は折り畳み式携帯端末に限定するものではなく、その他の電子機器に適用することも可能である。 Note that the electronic apparatus according to the present invention is not limited to the first embodiment to the second embodiment described above, and can be changed or improved as appropriate.
For example, in the first to second embodiments, a foldable portable terminal is illustrated as an electronic device. However, the electronic device is not limited to a foldable portable terminal, and can be applied to other electronic devices. is there.
　また、前記第１実施形態～第２実施形態で使用した電子機器、上カバー、グラファイトシート、凹部、第１の面、第２の面、段差面、キー基板、キーシート、周部、第４の領域、第５の領域、第６の領域、シート本体、第３の面、第４の面、グラファイト、第１粘着材、第１非粘着シート、第２粘着材、第２非粘着シート、接触部、第１の領域、第２の領域および第３の領域などの形状や構成は例示したものに限定するものではなく適宜変更が可能である。 Further, the electronic device, upper cover, graphite sheet, recess, first surface, second surface, step surface, key substrate, key sheet, peripheral portion, fourth portion used in the first to second embodiments Area, fifth area, sixth area, sheet body, third surface, fourth surface, graphite, first adhesive material, first non-adhesive sheet, second adhesive material, second non-adhesive sheet, The shapes and configurations of the contact portion, the first region, the second region, the third region, and the like are not limited to those illustrated, and can be changed as appropriate.
　本出願は、２０１０年１月１８日出願の日本国特許出願（特願2010-008129）に基づくものであり、それらの内容はここに参照として取り込まれる。 This application is based on a Japanese patent application filed on January 18, 2010 (Japanese Patent Application No. 2010-008129), the contents of which are incorporated herein by reference.
　１０，７０　電子機器
　１１　下筐体
　１９　上カバー（筐体）
　２０，７２　グラファイトシート
　２２　凹部
　２３　第１の面
　２４　第２の面
　２５　段差面
　２６　キー基板
　２８　キーシート
　２８ｂ　周部
　３１　第４の領域（第４の面における、第１の面と段差面と第２の面に対面する領域）
　３２　第５の領域（グラファイトシートの段差面と第２の面に配置された部分、第４の面における、段差面と第２の面に対面する領域）
　３３　第６の領域（第４の面において、第１の面に対応する領域）
　３５　シート本体
　３５ａ　第３の面
　３５ｂ　第４の面
　３６　グラファイト
　４１，７４　第１粘着材
　４２　第１非粘着シート
　４３，７６　第２粘着材
　４４　第２非粘着シート
　４５　接触部
　４６　第１の領域（第３の面における、第１の面と段差面と第２の面に対面する領域）
　４７　第２の領域（第３の面における、段差面と第２の面に対面する領域）
　４８　第３の領域 10, 70 Electronic equipment 11 Lower housing 19 Upper cover (housing)
20, 72 Graphite sheet 22 Recess 23 First surface 24 Second surface 25 Step surface 26 Key substrate 28 Key sheet 28b Peripheral portion 31 Fourth region (first surface, step surface and first surface in the fourth surface) Area facing the surface of 2)
32 5th area | region (the part arrange | positioned at the level | step difference surface and 2nd surface of a graphite sheet, the area | region which faces a level | step difference surface and a 2nd surface in a 4th surface)
33 Sixth region (in the fourth surface, a region corresponding to the first surface)
35 Sheet body 35a 3rd surface 35b 4th surface 36 Graphite 41,74 1st adhesive material 42 1st non-adhesive sheet 43,76 2nd adhesive material 44 2nd non-adhesive sheet 45 Contact part 46 1st area | region ( (A region in the third surface facing the first surface, the step surface, and the second surface)
47 2nd area | region (area | region facing a level | step difference surface and a 2nd surface in a 3rd surface)
48 Third area

Claims (6)

  1. 　凹部の底面である第１の面と、前記凹部の頂面である第２の面と、前記第１の面と前記第２の面との間に掛け渡された段差面と、を備える筐体と、
    　第３の面と、前記第３の面と反対の第４の面と、前記第３の面と前記第４の面の間にグラファイトとを備え、前記第３の面が、前記第１の面と前記段差面と前記第２の面に倣って配置されたグラファイトシートと、
    　前記グラファイトシートの前記第４の面において、前記第１の面に対応する領域に配置されたキー基板と、
    　前記キー基板と、前記グラファイトシートの前記段差面と前記第２の面に配置された部分と、を覆うキーシートとを備え、
    　前記グラファイトシートの第３の面は、前記第１の面に粘着するとともに、前記段差面および前記第２の面に粘着しない電子機器。     A housing comprising: a first surface that is the bottom surface of the recess; a second surface that is the top surface of the recess; and a stepped surface spanned between the first surface and the second surface. Body,
    And a third surface, a fourth surface opposite to the third surface, and graphite between the third surface and the fourth surface, wherein the third surface is the first surface. A graphite sheet disposed following the surface, the stepped surface and the second surface;
    A key substrate disposed in a region corresponding to the first surface in the fourth surface of the graphite sheet;
    A key sheet covering the key substrate and the step surface of the graphite sheet and the portion disposed on the second surface;
    The third surface of the graphite sheet is an electronic device that adheres to the first surface and does not adhere to the step surface and the second surface.
  2. 　請求項１に記載の電子機器であって、
    　前記グラファイトシートの第４の面は、前記キー基板に粘着するとともに、前記キーシートと粘着しない電子機器。     The electronic device according to claim 1,
    The fourth surface of the graphite sheet is an electronic device that adheres to the key substrate and does not adhere to the key sheet.
  3. 　請求項２に記載の電子機器であって、
    　前記キーシートは前記第２の面に接触する接触部を備え、
    　前記キーシートと前記第２の面は前記接触部において固定される電子機器。     The electronic device according to claim 2,
    The key sheet includes a contact portion that contacts the second surface;
    The electronic device in which the key sheet and the second surface are fixed at the contact portion.
  4. 　請求項３に記載の電子機器であって、
    　前記接触部は、前記第２の面に配置されたキーシートの周部である電子機器。     The electronic device according to claim 3,
    The electronic device is a peripheral portion of a key sheet disposed on the second surface.
  5. 　請求項１に記載の電子機器であって、
    　前記グラファイトシートは、前記第３の面における、前記第１の面と前記段差面と前記第２の面に対面する領域において粘着性を有し、かつ前記段差面と前記第２の面に対面する領域において非粘着シートを備える電子機器。     The electronic device according to claim 1,
    The graphite sheet has adhesiveness in a region facing the first surface, the stepped surface, and the second surface in the third surface, and faces the stepped surface and the second surface. An electronic device provided with a non-adhesive sheet in the area to be used.
  6. 　請求項２に記載の電子機器であって、
    　前記グラファイトシートは、前記第４の面における、前記第１の面と前記段差面と前記第２の面に対面する領域において粘着性を有し、かつ前記段差面と前記第２の面に対面する領域において非粘着シートを備える電子機器。     The electronic device according to claim 2,
    The graphite sheet has adhesiveness in a region of the fourth surface facing the first surface, the stepped surface, and the second surface, and faces the stepped surface and the second surface. An electronic device provided with a non-adhesive sheet in the area to be used.
PCT/JP2011/000203 2010-01-18 2011-01-17 Electronic device WO2011086950A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
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JP2003264389A (en) * 2002-03-07 2003-09-19 Toshiba Corp Electronic instrument
JP2004311332A (en) * 2003-04-10 2004-11-04 Nec Saitama Ltd Heat dissipating structure of input device for electronic apparatus
JP2005129734A (en) * 2003-10-23 2005-05-19 Sony Corp Electronic device
JP2007150521A (en) * 2005-11-25 2007-06-14 Kyocera Corp Mobile electronic apparatus, mobile electronic apparatus unit, and control method of mobile electronic apparatus
JP2010256619A (en) * 2009-04-24 2010-11-11 Canon Inc Heat dissipating structure of thin image display

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003264389A (en) * 2002-03-07 2003-09-19 Toshiba Corp Electronic instrument
JP2004311332A (en) * 2003-04-10 2004-11-04 Nec Saitama Ltd Heat dissipating structure of input device for electronic apparatus
JP2005129734A (en) * 2003-10-23 2005-05-19 Sony Corp Electronic device
JP2007150521A (en) * 2005-11-25 2007-06-14 Kyocera Corp Mobile electronic apparatus, mobile electronic apparatus unit, and control method of mobile electronic apparatus
JP2010256619A (en) * 2009-04-24 2010-11-11 Canon Inc Heat dissipating structure of thin image display

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