JP4886465B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device having a waterproof structure.

  Some conventional electronic devices have a waterproof portion with improved packing performance provided with a packing. This electronic device includes a case having an opening, a switch that faces the opening, and is accommodated in the case, an exterior rubber that covers the outside of the case, and a columnar protrusion provided on the inner surface of the exterior rubber And a rubber packing attached to the opening of the case so as to be positioned between the switch and the protruding portion. The packing has a cylindrical side surface portion that follows the columnar shape of the protruding portion, and a bottom portion that is formed so as to close one end of the side surface portion. That is, the packing is integrally formed with a “U” cross section. Moreover, the bottom part of packing is formed thinner than the side part.

In this electronic device, the sealing of the case is secured by fitting the packing into the opening, and the liquid is prevented from entering the case. Further, when the user operates the switch, the protrusion of the outer cover is pushed in, and the switch is pushed in through the bottom of the packing. At this time, since the reaction force is exerted by the elasticity of the bottom of the packing, it is said that the operational feeling of the switch is improved for the user (see, for example, Patent Document 1).
JP 2006-48092 A

  However, it is well known that while there are users who prefer a feeling of elasticity due to reaction force, there are users who dislike that a large resistance is applied to the finger when the switch is pressed. For this reason, when the bottom is formed of rubber, there is a problem that the click feeling of the switch or button is lowered due to the elasticity unique to rubber. Further, even if the bottom portion is made thinner than the side surface portion, there is a problem that an increase in the thickness of the switch portion is inevitable as long as the bottom portion is formed of rubber. In particular, there is a problem that such a packing cannot be used as it is in portable electronic devices that are becoming thinner in recent years. Furthermore, in order to integrally form the packing having the above shape, a dedicated molding die is required, which raises a problem of increasing manufacturing costs.

  The objective of this invention is providing the electronic device which can prevent the increase in the thickness dimension resulting from adoption of a waterproof structure, and the fall of the click feeling of a button.

In order to achieve the above object, an electronic device according to one aspect of the present invention includes a housing having an opening, a button fitted with play in the opening, and a gap between the button. A switch that is covered with a thin film and housed in the housing, and that senses pressing of the button; and a waterproof member that watertightly partitions a space in which the button is disposed, and the waterproof member includes the button and And a waterproof film positioned together with the thin film between the switch and a frame-like elastic double-sided tape that bonds the waterproof film and the housing.

In order to achieve the above object, an electronic device according to another aspect of the present invention includes a housing having an opening, a button fitted with play in the opening, and a gap between the button. A switch that is covered with a thin film and is housed in the housing, and that senses pressing of the button; and a waterproof member that watertightly partitions a space in which the switch is disposed, and the waterproof member includes the button and And a waterproof film positioned together with the thin film between the switch and a frame-like elastic double-sided tape that bonds the waterproof film and the housing.

  In order to achieve the above object, an electronic device according to another aspect of the present invention includes a housing having an opening, a button fitted with play in the opening, and a gap between the button. A switch that is housed in the housing and that senses pressing of the button, and a waterproof film that watertightly partitions a space in which the button is disposed, the waterproof film being a rubber sheet having a peripheral portion. It is comprised, is located between the button and the switch, and is adhered to the casing at the peripheral edge.

  In order to achieve the above object, an electronic device according to another aspect of the present invention includes a housing having an opening, a button fitted with play in the opening, and a gap between the button. A switch that is housed in the housing and that senses pressing of the button, and a waterproof film that tightly partitions a space in which the switch is disposed, and the waterproof film is a rubber sheet having a peripheral portion. It is comprised, is located between the said button and the said switch, and is adhere | attached on the said housing | casing in the said peripheral part.

  ADVANTAGE OF THE INVENTION According to this invention, the electronic device which can prevent the increase in the thickness dimension resulting from adoption of a waterproof structure and the fall of the click feeling of a button can be provided.

  Hereinafter, a first embodiment of the electronic apparatus of the present invention will be described with reference to FIGS. As shown in FIG. 1, a portable computer 11, which is an example of an electronic device, includes a main body unit 12, a display unit 13, and a hinge portion 14 provided between the main body unit 12 and the display unit 13. . The hinge portion 14 supports the display unit 13 and can rotate the display unit 13 with respect to the main unit 12. The display unit 13 includes a liquid crystal display 15 and a latch 16. In the present embodiment, a notebook personal computer is disclosed as an example of the portable computer 11.

  The main unit 12 includes a housing 21, a printed circuit board 22 (main board) housed in the housing 21, a keyboard 23 and a touch pad 24 provided on the top surface of the housing 21, And a control button device 25 provided at a position deeper than the keyboard 23 on the upper surface. The printed circuit board 22 includes a printed wiring board in which copper wiring layers are stacked, electronic components mounted on the printed wiring board, and the like.

  The casing 21 includes a case main body 21A and a cover 21B that covers a position behind the keyboard 23 on the upper surface of the case main body 21A. The cover 21 </ b> B has a cover main body 26 and a total of three first openings 27 provided in the cover main body 26. The three first openings 27 are arranged side by side in the direction along the longitudinal direction of the cover 21B. As shown in FIG. 3, the case main body 21 </ b> A has a recess 31 inside the area covered by the cover 21 </ b> B. The concave portion 31 is formed in a rectangular shape and is flatter than the surrounding casing 21 portion. The case main body 21A has a second opening 32 for attaching a pad main body 44 (to be described later) of the touch pad 24, and a plurality of third openings 33 provided around the second opening 32. is doing.

  As shown in FIG. 1, the control button device 25 is configured with buttons having various functions such as a power button, for example. As shown in FIG. 4, the control button device 25 includes a first button 34 that fits in the first opening 27 with play, and a switch board 35 that senses pressing of the first button 34. ing. Further, the control button device 25 includes a first space 36 in which the first button 34 is disposed, a second space 37 in which the switch board 35 is disposed, a first space 36 and a second space 37. And a first waterproofing member 41 that partitions the watertightly.

  The first button 34 includes a first button main body 34A, a fixing portion 34B that fixes the first button main body 34A to the cover 21B of the housing 21, and a protruding portion 34C that protrudes from the bottom surface of the first button main body 34A. And have. The switch substrate 35 includes a first substrate body 35A, a first switch 35B mounted on the first substrate body 35A, and a first thin film 35C covering the surface of the first switch 35B. Have. The switch board 35 is disposed with a gap between the switch button 35 and the first button 34, and is accommodated inside the cover 21 </ b> B of the housing 21.

  As shown in FIGS. 3 and 4, the first waterproof member 41 partitions (encloses) the second space 37 in which the switch board 35 is disposed in a watertight manner. The first waterproof member 41 has a frame-like shape that bonds the first waterproof film 42 positioned between the first button 34 and the first switch 35B, and the first waterproof film 42 and the housing 21. A first elastic body 43.

  As shown in FIG. 3, the first elastic body 43 is formed in a frame shape. The first elastic body 43 is composed of, for example, a double-sided tape. As shown in FIG. 4, the first elastic body 43 includes an elastic first base layer 43A and a pair of first adhesive layers 43B provided on both surfaces of the first base layer 43A. have. The first base layer 43A is made of a waterproof porous material, such as a sponge. The thickness dimension A of the first elastic body 43 is configured to have a thickness of 1 mm to 5 mm, for example. The first switch 35 </ b> B of the switch board 35 is disposed inside the first elastic body 43. In addition, the 1st elastic body 43 is not restricted to a double-sided tape, For example, other elastic bodies, such as rubber | gum, may be sufficient.

  The first waterproof film 42 is made of, for example, a polyester material or a rubber sheet. For this reason, the first waterproof film 42 has high mechanical strength and waterproofness. The thickness dimension B of the first waterproof film 42 is configured to have a thickness of 0.05 mm to 0.15 mm, for example. That is, the thickness dimension B of the first waterproof film 42 is smaller than the thickness dimension A of the first elastic body 43.

  The touch pad 24 includes a pad main body 44 and a touch pad button device 45 provided around the pad main body 44. As shown in FIG. 5, the pad main body 44 is attached to the case main body 21A so as to face the second opening 32 of the case main body 21A. The touch pad button device 45 includes a total of four second buttons 46 that fit in the third openings 33 with play, and a sub-board 47 that senses pressing of the second buttons 46. ing. As shown in FIG. 6, the touch pad button device 45 includes a first space 49 in which the second button 46 is disposed, a second space 50 in which the sub-board 47 is disposed, and the first space 49. And a second waterproof member 48 that partitions the second space 50 in a watertight manner. In FIG. 6, the front side of the paper is the upper side in the vertical direction, and the back side of the paper is the lower side in the vertical direction.

  As shown in FIG. 6, the second button 46 includes a second button body 46A, a fixing portion 46B for fixing the second button body 46A to the case body 21A of the housing 21, and a second button body 46A. 46C which protrudes from the bottom face. The sub-board 47 includes a second board body 47A, a second switch 47B mounted on the second board body 47A, and a second thin film 47C covering the surface of the second switch 47B. Yes. The sub board 47 is disposed with a gap between the second button 46 and is accommodated in the case main body 21 </ b> A of the housing 21.

  As shown in FIGS. 5 and 6, the second waterproof member 48 watertightly partitions (encloses) the first space 49 in which the second button 46 is disposed. The second waterproof member 48 has a frame-like shape that bonds the second waterproof film 51 located between the second button 46 and the second switch 47B, and the second waterproof film 51 and the housing 21. A second elastic body 52.

  As shown in FIG. 5, the second elastic body 52 is formed in a frame shape. The second elastic body 52 is composed of, for example, a double-sided tape. As shown in FIG. 6, the second elastic body 52 includes an elastic second base material layer 52A, and a pair of second adhesive layers 52B provided on both surfaces of the second base material layer 52A. have. The second base layer 52A is made of a waterproof porous material, such as a sponge. The thickness C of the second elastic body 52 is configured to have a thickness of 1 mm to 5 mm, for example. A second button 46 is disposed inside the second elastic body 52. The second elastic body 52 is not limited to the double-sided tape, and may be another elastic body such as rubber.

  The second waterproof film 51 is made of, for example, a polyester material or a rubber sheet, and has high mechanical strength and waterproofness. The thickness dimension B of the second waterproof film 51 is configured to have a thickness of 0.05 mm to 0.15 mm, for example. That is, the thickness dimension B of the second waterproof film 51 is smaller than the thickness dimension C of the second elastic body 52.

  Here, the operation of the control button device 25 will be described with reference to FIG. In the control button device 25, when the first button 34 is pushed by the user's finger, the protrusion 34C of the first button 34 pushes on the first switch 35B of the switch board 35 to turn it on. At that time, the pressing force of the first button 34 is also applied to the first waterproofing member 41 located between the first button 34 and the switch board 35.

When the first button 34 is pushed toward the switch board 35, the first waterproof film 42 of the first waterproof member 41 is pushed toward the switch board 35. This tension acts on the periphery of the first waterproof film 42 and deforms the first elastic body 43. Due to the deformation of the first elastic body 43, the movement amount of the first waterproof film 42 can be secured and the stroke amount of the first button 34 can be secured. Further, since the first elastic body 43 is deformed, the force acting between the first elastic body 43 and the first waterproof film 42 is as small as possible. With reference to FIG. The operation of the button device 45 will be described. When the second button 46 of the touch pad button device 45 is pushed in by the user, the convex portion 46C of the second button 46 pushes the second switch 47B of the sub-board 47 and turns it on. At this time, the pressing force of the second button 46 also acts on the second waterproof member 48 positioned between the second button 46 and the sub board 47.

  When such pressing force is applied, the second waterproof film 51 of the second waterproof member 48 is pressed toward the sub board 47. Thereby, tension | tensile_strength acts on the circumference | surroundings of the 2nd waterproof film 51, and the 2nd elastic body 52 is deformed. Due to the deformation of the second elastic body 52, the movement amount of the second waterproof film 51 is ensured, and the force acting between the second waterproof film 51 and the second elastic body 52 can be minimized. .

  Next, a case where liquid actually enters from the cover 21B will be described with reference to FIG. Since the cover 21 </ b> B cannot secure the watertightness of the inner portion thereof, in the present embodiment, the switch substrate 35 itself is covered with the first waterproof member 41. That is, the switch substrate 35 is disposed inside the first elastic body 43 of the first waterproof member 41.

  When the liquid enters from the gap between the first opening 27 and the first button 34, the liquid flows on the first waterproof film 42 of the first waterproof member 41. The liquid flows around the first waterproof film 42 and accumulates in the recess 31 of the case main body 21A. Even in this case, since the second space 37 in which the switch board 35 is disposed is watertightly partitioned by the first waterproof member 41, the switch board 35 is prevented from being immersed in the liquid. Yes.

  With reference to FIG. 6, the case where the liquid permeates into the housing 21 from the second opening 32 will be described. The touch pad button device 45 is surrounded by the second waterproof member 48 so that the second opening 32 is covered with this portion since there is no risk of being flooded from other portions of the housing 21. That is, the second button 46 of the touch pad button device 45 is located inside the second elastic body 52 of the second waterproof member 48.

  When liquid enters from the gap between the second opening 32 and the second button 46, the liquid is in the first space by the second waterproof film 51 and the second elastic body 52 of the second waterproof member 48. 49. For this reason, this liquid does not enter the second space 50 in which the sub-board 47 is arranged.

  The above is the first embodiment of the electronic device. According to the first embodiment, the portable computer 11 includes a first space for watertightly partitioning a first space 36 in which the first button 34 is disposed and a second space 37 in which the first switch 35B is disposed. The first waterproof member 41 includes a first waterproof film 42 positioned between the first button 34 and the first switch 35B, a first waterproof film 42, and a housing. And a frame-like first elastic body 43 that adheres 21. In addition, the portable computer 11 includes a second waterproof member 48 that partitions the first space 49 in which the second button 46 is disposed and the second space 50 in which the second switch 47B is disposed in a watertight manner. The second waterproof member 48 has a frame shape for bonding the second waterproof film 51 located between the second button 46 and the second switch 47B, and the second waterproof film 51 and the housing 21. The second elastic body 52.

  According to these configurations, the first waterproof member 41 separates the first space 36 in which the first button 34 is disposed and the second space 37 in which the first switch 35B is disposed in a watertight manner. Therefore, even if liquid enters from the periphery of the first opening 27 of the cover 21B or the cover 21B, the liquid can be prevented from being applied to the first switch 35B. Similarly, the second waterproof member 48 isolates the first space 49 in which the second button 46 is disposed and the second space 50 in which the second switch 47B is disposed in a watertight manner. Even if liquid enters from the second opening of the housing 21, it is possible to prevent the liquid from being applied to the second switch 47B.

  The first waterproof member 41 includes a first waterproof film 42, and a frame-shaped first elastic body 43 that bonds the first waterproof film 42 and the housing 21. The second waterproof member 48 includes a second waterproof film 51, and a frame-shaped second elastic body 52 that bonds the second waterproof film 51 and the housing 21. According to this configuration, since only the first waterproof film 42 is disposed between the first button 34 and the first switch 35B, the click of the first button 34 in the control button device 25 is performed. It is possible to prevent the feeling from being impaired. Similarly, since only the second waterproof film 51 is disposed between the second button 46 and the second switch 47B, the touch pad button device 45 provides the click feeling of the second button 46. It can be improved.

  In addition, since the movement amount of the first waterproof film 42 is secured by the deformation of the first elastic body 43, the force acting between the first waterproof film 42 and the first elastic body 43 is reduced. Further, it is possible to prevent the adhesion from being peeled off as much as possible. Similarly, since the amount of movement of the second waterproof film 51 is ensured by the deformation of the second elastic body 52, the force acting between the second waterproof film 51 and the second elastic body 52 is reduced. Thus, it is possible to prevent the adhesion from being peeled off as much as possible. Moreover, if the movement amount of the 1st, 2nd waterproof films 42 and 51 is ensured, the blurring amount (stroke) of the 1st button 34 and the 2nd button 46 can fully be taken.

  If the first and second waterproof members 41 and 48 of the present embodiment are used, the waterproof member is portable as compared with the case where the waterproof member is formed by integrally molding a packing having a U-shaped cross section as in the conventional example. The computer 11 can be configured to be thin. Further, when the first and second waterproof members 48 are manufactured, the first and second waterproof members 41 and 48 can be manufactured at a low cost without requiring a dedicated mold for integral molding. The plurality of first buttons 34 can be covered collectively by the first waterproof member 41, and the plurality of second buttons 46 can be covered collectively by the second waterproof member 48. For this reason, a click feeling can be made uniform between the first buttons 34. Further, the click feeling can be made uniform between the second buttons 46.

  The thickness dimension of the first waterproof film 42 is smaller than the thickness dimension of the first elastic body 43. Thereby, the clearance gap between the 1st button 34 and the 1st switch 35B can be made small, and thickness reduction of the portable computer 11 can be advanced further. Similarly, the thickness dimension of the second waterproof film 51 is smaller than the thickness dimension of the second elastic body 52. For this reason, it is possible to reduce the gap between the second button 46 and the second switch 47B, and to promote the thinning of the portable computer 11. In this case, in particular, if the first waterproof film 42 having a thickness of 0.05 mm and the second waterproof film 51 having a thickness of 0.05 mm are used, it is equivalent to the normal portable computer 11 having no waterproof structure. Can be thick.

  In this case, the first and second waterproof films 42 and 51 are made of a polyester material. According to this, the waterproof film excellent in waterproofness and mechanical strength can be provided. Moreover, the 1st, 2nd waterproofing films 42 and 51 can be comprised cheaply.

  In this case, the 1st, 2nd waterproofing films 42 and 51 are comprised with a rubber sheet. According to this, the waterproof film excellent in waterproofness and mechanical strength can be provided. Moreover, the 1st, 2nd waterproofing films 42 and 51 can be comprised cheaply. Furthermore, the first and second waterproof films 42 and 51 are preferably composed of thin rubber sheets in order to improve the click feeling.

  The first elastic body 43 includes an elastic first base material layer 43A and first adhesive layers 43B provided on both surfaces of the first base material layer 43A. The second elastic body 52 includes an elastic second base material layer 52A and second adhesive layers 52B provided on both surfaces of the second base material layer 52A. According to these structures, the 1st, 2nd elastic bodies 43 and 52 can be comprised with what is called a double-sided tape. Therefore, the first and second waterproof members 41 and 48 can be configured with a simple structure. Moreover, when attaching the 1st, 2nd waterproofing members 41 and 48, a work process can be simplified. Further, when the first and second elastic bodies 43 and 52 are produced, it is sufficient to cut out the sheet-like double-sided tape into a frame shape with a mold, so that these can be produced easily and inexpensively.

  The second button 46 is disposed inside the second elastic body 52 of the second waterproof member 48. According to this configuration, the second button 46 and the second opening 32 in which the second button 46 is disposed can be disposed in the first space 49 surrounded by the second waterproof member 48. For this reason, the liquid that has entered the inside of the housing 21 from the second opening 32 can be retained in the first space 49.

  The first switch 35 </ b> B is disposed inside the first elastic body 43 of the first waterproof member 41. According to this configuration, the first switch 35 </ b> B can be disposed in the second space 37 surrounded by the first waterproof member 41. For this reason, even if the liquid is submerged from the first opening 27 of the cover 21B or the cover 21B, the first switch 35B can be prevented from being submerged by the liquid.

  A second embodiment of the electronic device will be described with reference to FIG. A portable computer 61, which is an example of the electronic apparatus of the second embodiment, is different from that of the first embodiment in the structure of the touch pad button device 67, but the other parts are common. For this reason, mainly different parts will be described, and common parts will be denoted by common reference numerals and description thereof will be omitted.

  The portable computer 61 has a main unit 12, a display unit, and a hinge portion that connects them. The main unit 12 includes a housing 62, a printed circuit board accommodated in the housing 62, a keyboard, a touch pad, and a control button device. The housing 62 has a recess 64 into which a third button 63 described later is fitted, and a through hole 65 through which the shaft portion 63B of the third button 63 is passed.

  The touch pad 24 includes a pad main body 44 and a touch pad button device 67. The touch pad button device 67 includes a third button 63, a sub-board 47 that senses pressing of the third button 63, and a spring member interposed between the third button 63 and the recess 64 of the housing 62. 66. In addition, the touch pad button device 67 includes a first space 49 in which the third button 63 is disposed, a second space 50 in which the sub-board 47 is disposed, and the first space 49 and the second space 50. And a second waterproof member 48 that partitions the watertightly.

  As shown in FIG. 6, the third button 63 includes a key top 63A and a shaft portion 63B extending from the key top 63A. The sub-board 47 includes a second board body 47A, a second switch 47B mounted on the second board body 47A, and a second thin film 47C covering the surface of the second switch 47B. Yes.

  The second waterproof member 48 is a frame-shaped member that bonds the second waterproof film 51 located between the third button 63 and the second switch 47B, and the second waterproof film 51 and the housing 62. A second elastic body 52. The thickness C of the second elastic body 52 is configured to have a thickness of 1 mm to 5 mm, for example. A second button 46 is disposed inside the second elastic body 52. The thickness dimension B of the second waterproof film 51 is configured to have a thickness of 0.05 mm to 0.1 mm, for example. That is, the thickness dimension B of the second waterproof film 51 is smaller than the thickness dimension C of the second elastic body 52.

  When the user depresses the third button against the urging force of the spring member 66, the shaft portion 63B of the third button 63 depresses the second switch 47B of the sub-board 47 to turn it on. At that time, the second waterproof film 51 receives a tension toward the sub-board 47, and this tension is absorbed by the deformation of the second elastic body 52. For this reason, the force acting between the second elastic body 52 and the second waterproof film 51 is as small as possible. In this case, when the liquid enters the inside of the housing 62 through the through-hole 65, the liquid is held inside the first space 49 by the second waterproof member 48. For this reason, the sub-board 47 is prevented from being immersed in the liquid.

  According to the second embodiment, even in the touch pad button device 67 in which the spring member 66 is interposed between the third button 63 and the recess 64 of the housing 62, the second waterproof member 48 is provided. Can be applied. Thereby, it is possible to prevent the liquid from entering the housing 62 while preventing an increase in the thickness of the portion to which the touch pad button device 67 is attached. Further, it is possible to prevent the click feeling of the third button 63 from being impaired. In addition, since the force acting between the second waterproof film 51 and the second elastic body 52 is reduced by the deformation of the second elastic body 52, the second waterproof film 51 and the second elastic body 52 are reduced. Can be prevented as much as possible from being peeled off.

  Next, a third embodiment of the electronic device will be described with reference to FIGS. 10 and 11. A portable computer 71, which is an example of the electronic apparatus of the third embodiment, differs from that of the first embodiment in the structure of a control button device 72 and a touch pad button device 73, but the other parts are common. is doing. For this reason, mainly different parts will be described, and common parts will be denoted by common reference numerals and description thereof will be omitted.

  As shown in FIG. 10, in the control button device 72, the first waterproof film 42 partitions (encloses) the second space 37 in which the first switch 35B is disposed in a watertight manner. The first waterproof film 42 is composed of a rubber sheet having a peripheral edge 42A. The thickness dimension B of the first waterproof film 42 is configured to have a thickness of 0.05 mm to 0.15 mm, for example. The first waterproof film 42 is located between the first button 34 and the first switch 35B, and is bonded to the case main body 21A of the housing 21 at the peripheral edge 42A. The peripheral edge portion 42 </ b> A of the first waterproof film 42 and the housing 21 are bonded by, for example, a double-sided tape 76. The peripheral portion 42A has a frame shape. The first switch 35B is disposed inside the peripheral edge portion 42A.

  As shown in FIG. 11, in the touchpad button device 73, the second waterproof film 51 partitions (encloses) the first space 49 in which the second button 46 is disposed in a watertight manner. The second waterproof film 51 is composed of a rubber sheet having a peripheral edge 51A. The thickness dimension B of the second waterproof film 51 is configured to have a thickness of 0.05 mm to 0.15 mm, for example. The second waterproof film 51 is located between the second button 46 and the second switch 47B, and is bonded to the case main body 21A of the housing 21 at the peripheral portion 51A. The peripheral edge 51 </ b> A of the second waterproof film 51 and the housing 21 are bonded by, for example, a double-sided tape 76. The peripheral portion 51A has a frame shape. The second button 46 is disposed inside the peripheral edge 51A.

  According to the third embodiment, waterproofness can be ensured even when the first elastic body and the second elastic body cannot be arranged due to the mounting space. Further, since the first waterproof film 42 itself composed of a rubber sheet can be expanded and contracted, the force acting between the first waterproof film 42 and the housing 21 is reduced as much as possible so that the first waterproof film 42 It can prevent peeling from the housing | casing 21. FIG. Similarly, since the second waterproof film 51 itself composed of a rubber sheet can be expanded and contracted, the force acting between the second waterproof film 51 and the housing 21 is minimized, and the second waterproof film 51 is reduced. Can be prevented from being peeled off from the casing 21. Moreover, since the 1st waterproof film 42 and the 2nd waterproof film 51 are each comprised thinly, the click feeling of the 1st button 34 and the 2nd button 46 can be improved.

  The electronic device of the present invention is not limited to a portable computer, and can be implemented for other electronic devices such as a portable information terminal. Moreover, in the said embodiment, although the housing | casings 21 and 62 and the 1st-3rd buttons 34, 46, and 63 are comprised by another member, the said 1st, 2nd waterproofing members 41 and 48 are as follows. The present invention can also be applied to a case where a part of the casing 21 has a button shape, and the button-shaped part is made of the same material as the other parts of the casing 21. Other electronic devices can be implemented with various modifications without departing from the spirit of the invention.

1 is a perspective view showing a portable computer according to a first embodiment. The disassembled perspective view which decomposes | disassembles and shows the cover part of the portable computer shown in FIG. FIG. 3 is an enlarged top view showing a control button device of the portable computer shown in FIG. 2. Sectional drawing which cut | disconnects and shows the waterproof structure shown in FIG. 3 in the position of F4-F4 line. The perspective view which shows the touchpad button apparatus of the portable computer shown in FIG. 1 from the back side of a housing | casing. Sectional drawing which cuts and shows the touchpad button apparatus shown in FIG. 5 in the position of F6-F6 line. Sectional drawing which shows the state in which the 1st button was pushed in the control button apparatus shown in FIG. Sectional drawing which shows the state by which the 2nd button was pushed in in the touchpad button apparatus shown in FIG. Sectional drawing which shows the touchpad button apparatus of the portable computer which concerns on 2nd Embodiment. Sectional drawing which shows the control button apparatus of the portable computer which concerns on 3rd Embodiment. Sectional drawing which shows the touchpad button apparatus of the portable computer which concerns on 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11, 61, 71 ... Portable computer, 21, 62 ... Case, 27 ... 1st opening part, 33 ... 3rd opening part, 34 ... 1st button, 35 ... Switch board, 35B ... 1st switch , 36 ... first space, 37 ... second space, 41 ... first waterproof member, 42 ... first waterproof film, 42A ... peripheral edge, 43 ... first elastic body, 46 ... second button 47 ... Sub-board, 47B ... Second switch, 48 ... Second waterproof member, 49 ... First space, 50 ... Second space, 51 ... Second waterproof film, 51A ... Peripheral part, 52 ... Second elastic body, 63 ... third button

Claims (7)

A housing having an opening;
A button fitted with play in the opening,
A switch that is covered with a thin film with a gap between the button and housed in the housing, and that senses pressing of the button;
A waterproof member for watertightly partitioning a space in which the button is disposed;
Comprising
The waterproof member is
A waterproof film located with the thin film between the button and the switch;
A frame-like elastic double-sided tape that bonds the waterproof film and the housing;
An electronic device comprising: The electronic device according to claim 1, wherein the button is disposed inside the double-sided tape . A housing having an opening;
A button fitted with play in the opening,
A switch that is covered with a thin film with a gap between the button and housed in the housing, and that senses pressing of the button;
A waterproof member for watertightly partitioning a space in which the switch is disposed;
Comprising
The waterproof member is
A waterproof film located with the thin film between the button and the switch;
A frame-like elastic double-sided tape that bonds the waterproof film and the housing;
An electronic device comprising: The electronic device according to claim 3, wherein the switch is disposed inside the double-sided tape . 5. The electronic device according to claim 1, wherein a thickness dimension of the waterproof film is smaller than a thickness dimension of the double-sided tape .   The electronic device according to claim 1, wherein the waterproof film is made of a polyester material. A housing provided with an opening,
A button located in the opening;
A switch that is covered with a thin film and is separated from the button and accommodated in the housing, and pressed when the button is pressed,
A waterproof film positioned with the thin film between the button and the switch;
A frame-like elastic double-sided tape that bonds the waterproof film and the housing;
An electronic device comprising:

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