JP2013171714A - Keyboard device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a keyboard device, with a simple and thin structure, which is capable of irradiating a key top with illumination light.SOLUTION: A support substrate 10 comprises: an illumination plate 11; a membrane laminate 13 provided on the illumination plate 11; and a reflection sheet 12 provided to overlap the lower face of the illumination plate 11. A key unit 20 includes: a unit base 21; a lifting/lowering support mechanism 30 which is supported on the unit base 21 so as to be freely operable; and a key top 2a which is supported by the lifting/lowering support mechanism 30 in a manner capable of being freely lifted and lowered. Fitting projections 26 and 27 are provided to be folded back from the unit base 21. The fitting projections 26 and 27 pass through clearance holes 13b and 13c of the membrane laminate 13 and are inserted into support holes 11a of the illumination plate 11. The lower ends of the fitting projections 26 and 27 are folded under the lower face of the reflection sheet 12 below the illumination plate 11 so that the unit base 21 is substantially fixed to the illumination plate 11.

Description

  The present invention relates to a keyboard device in which a plurality of key tops and switch portions are arranged, and more particularly to a keyboard device that can provide illumination light to the key tops.

  A keyboard device such as a personal computer has a plurality of key tops. Each key top is supported by an elevating support mechanism in which two links are pivotally connected, and when the key top is pressed, a switch unit composed of a membrane laminate is interposed via an elastic member. Press to switch the switch circuit.

  The following Patent Documents 1 and 2 disclose a keyboard device that can provide illumination light to a key top.

  In the illuminated keyboard device described in Patent Document 1, a membrane circuit board is installed on a sheet having a plurality of support protrusions, and the plurality of support protrusions are located inside holes formed in the membrane circuit board. . A pair of connecting members are rotatably supported by the support protrusions, and a cap (key top) is supported by the pair of connecting members to be movable up and down. A light guide and a reflective sheet are superimposed on the lower surface of the sheet, and illumination light transmitted by the light guide passes through the inside of the hole formed in the sheet and is given to the cap.

  The light-emitting keyboard described in Patent Document 2 has a key connection portion protruding from a keyboard base, and a reflective sheet and a light guide plate are overlaid on the keyboard base, and a thin film circuit board and a thin film circuit board thereon. An elastic member for pressing the switch portion is provided. The key connection portion protrudes upward from a hole formed in the reflection sheet, the light guide plate, and the thin film circuit board, and a scissor member that supports the key top is attached to the key connection portion.

  In the light-emitting keyboard device described in Patent Document 2, light guided by a light guide plate installed on a keyboard base is given to a key top.

US Pat. No. 6,860,612 JP 2010-244508 A

  The illuminated keyboard device described in Patent Document 1 has a structure in which a plurality of support protrusions are provided on a sheet, and a pair of connecting members are rotatably supported by the support protrusions. Therefore, the sheet has a complicated structure. There is a high part cost.

  The light-emitting keyboard described in Patent Document 2 also has a structure in which a key connection portion protrudes from a keyboard base and a scissor member that supports a key top is supported by the key connection portion. The keyboard base from which a plurality of key connection portions protrudes has a complicated structure and a high component cost.

  Furthermore, the sheet and the keyboard base have a thick structure because the support protrusion and the key connection portion are integrally formed. Since the illumination plate and the membrane laminate are stacked on the sheet or keyboard base, it is difficult to reduce the thickness of the entire keyboard device.

  The present invention solves the above-described conventional problems, and an elevating support mechanism that supports a key top is installed on a support substrate portion in which an illumination plate and a membrane laminate are stacked, and the structure of the support substrate portion An object of the present invention is to provide a keyboard device that can be made thin and thin as a whole.

The present invention relates to a keyboard device in which a plurality of lift support mechanisms that support the key tops so as to be lifted and a switch unit that is operated by being pressed by the key tops are arranged.
A membrane laminate having a plurality of switch parts is overlaid on a translucent illumination plate that transmits illumination light, and the membrane laminate is translucent at least in a region facing the key top,
A unit base that supports the elevating support mechanism is installed on the membrane laminate, and a plurality of attachment protrusions provided on the unit base pass through the membrane laminate and are formed on the illumination plate. The unit base is supported by being inserted into a hole.

  In the keyboard device according to the present invention, the elevating support mechanism for supporting the key top is supported by the unit base, and the mounting protrusion provided on the unit base is supported by being inserted into the support hole of the illumination plate. Therefore, it is not necessary to provide a substrate having a protrusion for supporting the lifting support mechanism as in the prior art, and the structure of the support substrate portion that supports the lifting support mechanism can be simplified. Further, since the substrate having the protrusions is unnecessary, the support substrate portion can be easily thinned.

  In the present invention, the attachment protrusion is bent at the lower surface of the illumination plate. Alternatively, a reflective sheet is provided on the lower surface of the illumination plate, and the attachment protrusion is inserted into a hole formed in the reflective sheet and bent at the lower surface of the reflective sheet.

  In the above structure, since the unit base is substantially fixed to the illumination plate and the support substrate portion is configured based on the illumination plate, the structure of the support substrate portion can be simplified and the thickness can be reduced.

  In this case, a metal reinforcing plate may be provided below the reflective sheet.

  In the present invention, a metal reinforcing plate is provided on the lower side of the illumination plate, and the mounting protrusion is inserted into a support hole formed in the reinforcing plate and bent at the lower surface of the reinforcing plate. It may be.

  Since the reinforcing plate reinforces the illumination plate, a thin metal plate can be used, and since this metal plate does not need to support the lifting support mechanism, it can be configured with a simple flat plate, and the support substrate portion can be made thin. Can be configured.

  In the present invention, it is preferable that the membrane laminate is provided with a shielding portion for restricting light transmission between adjacent key tops.

  Further, in the present invention, the mounting protrusion is a flat plate shape, the support hole formed in the illumination plate is a long hole, and light directed in the longitudinal direction of the long hole is given from the light source to the illumination plate. Is preferred.

  Since the keyboard device of the present invention uses the illumination plate as a support portion for supporting the key unit, it is not necessary to provide a metal plate having a protrusion on the support substrate portion, and the structure of the support substrate portion can be simplified. The keyboard device can be thinned.

Sectional drawing which shows a part of keyboard apparatus of the 1st Embodiment of this invention, A plan view showing an example of a keyboard device in which a plurality of key units are arranged; The disassembled perspective view of the keyboard apparatus of 1st Embodiment, Exploded perspective view of the key unit, Sectional drawing which shows a part of keyboard apparatus of the 2nd Embodiment of this invention, Sectional drawing which shows a part of keyboard apparatus of the 3rd Embodiment of this invention, The perspective view of the unit base and illumination plate which are used for the keyboard apparatus of the 4th Embodiment of this invention,

  The keyboard device 1 according to the embodiment of the present invention has a support substrate portion 10 shown in FIGS. A plurality of sets of key units 20 are fixed on the support substrate portion 10. A key top is supported by each key unit 20 so as to be movable up and down.

  As shown in FIG. 2, the keyboard device 1 has key tops 2 a, 2 b, 2 c, 2 d,... Of various sizes arranged, and each key top is a key unit 20 shown in FIG. It is supported by. Below, the key unit 20 which mainly supports the key top 2a among several types of key tops 2a, 2b, 2c, 2d, ... will be described.

  As shown in FIGS. 1 and 3, the support substrate unit 10 has an illumination plate 11. The illumination plate 11 is made of a light-transmitting synthetic resin plate such as a polycarbonate plate or an acrylic plate. Unlike the film, the illumination plate 11 has a rigidity that does not deform freely. The plate thickness of the illumination plate 11 is preferably 0.5 mm or more, and more preferably 1.0 mm or less, but the plate thickness is not limited to this dimension.

  In the key mounting portion to which each key unit 20 is attached, although not shown in the drawing, an irregular reflection portion with fine irregularities is formed on the lower surface 11 b of the illumination plate 11. The keyboard device 1 is provided with a light source such as an LED (not shown) for supplying light into the thickness of the illumination plate 11. The light given from the light source to the inside of the illumination plate 11 propagates through the inside of the illumination plate 11, is reflected by the irregular reflection portion, exits from the surface 11 c of the illumination plate 11, and illuminates each key unit 20 with illumination light. Is given.

  In the key mounting portion where each key top 2a is arranged, four support holes 11a are opened in the illumination plate 11.

  A reflection sheet 12 is provided below the illumination plate 11. The reflection sheet 12 has substantially the same area as the illumination plate 11. The reflection sheet 12 is a resin film that is thinner than the illumination plate 11 and easily deformed, and the surface 12b facing the illumination plate 11 is colored in a color that easily reflects light such as white or metal color. In the reflection sheet 12, a hole 12 a is opened at a portion facing the support hole 11 a of the illumination plate 11.

  A membrane laminate 13 is overlaid on the surface 11 c of the illumination plate 11. The membrane laminate 13 is configured by overlapping a lower film and an upper film. The lower film and the upper film have substantially the same area as the illumination plate 11. A spacer film is sandwiched between the lower film and the upper film. In the spacer film, a hole is formed in the center of each key mounting part, and contacts are formed on the inner surfaces of the lower film and the upper film inside the hole. Opposing switch sections are configured.

  Or the membrane laminated body 13 may be comprised by the lower film and the upper film, and the spacer layer may be printed on the opposing surface of either film.

  The lower film, the upper film, and the spacer film constituting the membrane laminate 13 are made of a light-transmitting synthetic resin material. As shown in FIG. 3, the surface 13a of the membrane laminate 13, that is, the surface of the upper film is provided with a colored layer such as black or dark green which is a hue that blocks light by a printing process or a coating process. The provided part is the shielding part 14.

  On the surface 13 a of the membrane laminate 13, a translucent part 15 in which the colored layer is not provided is formed in a rectangular region surrounded by the shielding part 14. The translucent part 15 is provided in the key mounting part in which each key unit 20 is mounted. The translucent portion 15 is formed in a region that is located directly below the key top 2a installed thereon and is smaller than the area of the key top 2a. The illumination light emitted upward from the surface 11c of the illumination plate 11 is blocked by the shielding part 14, and a part of the illumination light passes through the light transmitting part 15 and is given to the key top 2a thereon.

  As shown in FIG. 1, in the keyboard device 1, a plurality of key tops 2 a, 2 b, 2 c, 2 d,... Are arranged with a small gap therebetween, and the shielding portion 14 is located directly below the gap. Therefore, light given upward from the surface 11c of the illumination plate 11 is difficult to leak upward from the gap between the key tops.

  As shown in FIG. 3, four escape holes 13 b, 13 b, 13 c, and 13 c are opened in each key mounting portion of the membrane laminate 13. The escape holes 13b, 13b, 13c, 13c are formed in the light transmitting portion 15.

  As shown in FIG. 4, the key unit 20 mounted on each key mounting portion of the support substrate portion 10 includes a unit base 21 and an elevating support mechanism (support link mechanism) 30 installed thereon. Yes.

  In the key unit 20 of the embodiment, one set of lifting support mechanism 30 and one key top 2 a are incorporated in one unit base 21. However, two or more sets of lifting support mechanisms 30 and two or more key tops may be attached on one unit base 21.

  As shown in FIG. 4, the unit base 21 is formed of a metal plate, has a flat frame-shaped base portion 22, and an opening 23 is formed at the center of the base portion 22. Support pieces 24 and 24 are provided on the X1-X2 side of the base portion 22. Each support piece 24 has a support hole 24a on the Y2 side. On the inner side of the support pieces 24, 24 and on the Y1 side, the latching pieces 25, 25 are bent upward from the base portion 22, and a latching recess 25a that opens in the Y1 direction is formed in each latching piece 25. Is formed.

  A pair of attachment projections 26, 26 are bent on the Y1 side of the unit base 21, and a pair of attachment projections 27, 27 are bent on the Y2 side. The mounting protrusions 26, 26 and the mounting protrusions 27, 27 are different from each other in the bending direction by 90 degrees.

  As shown in FIG. 4, the lifting support mechanism 30 includes a first link 31 and a second link 32. The first link 31 and the second link 32 are made of a synthetic resin material.

  The first link 31 includes a frame-shaped frame portion 33 that surrounds four sides, and a large-area opening 34 that opens at the center of the frame portion 33. A pair of base support shafts 35 and 35 projecting in the X1 direction and the X2 direction are integrally formed on the Y2 side of the first link 31. A pair of tip support shafts 36 and 36 projecting in the X1 direction and the X2 direction are integrally formed on the Y1 side.

  In the frame portion 33 of the first link 31, connection concave portions 37 and 37 are formed on the X1 side and the X2 side of the opening portion 34. The connecting recesses 37, 37 are open upward.

  The second link 32 is formed in a size that can enter the opening 34 of the first link 31. The second link 32 is provided with a pair of connecting projections 38 that project in the X1 direction and the X2 direction. When the second link 32 is mounted downward into the opening 34 of the first link 31, the connection protrusions 38 and 38 enter the connection recesses 37 and 37, respectively, and as shown in FIG. 32 is mounted inside the first link 31. And the 1st link 31 and the 2nd link 32 are mutually connected pivotally by using the fitting part of each connection protrusion 38,38 and the connection recessed parts 37,37 as a fulcrum.

  Base support shafts 41 and 41 projecting in the X1 direction and the X2 direction on the Y1 side are integrally formed on the second link 32, and tip support shafts 42 and 42 projecting in the X1 direction and the X2 direction on the Y2 side. Are integrally formed. A circular opening 39 is formed at the center of the second link 32.

  When assembling the unit base 21 and the lifting support mechanism 30, as shown in FIG. 4, the pair of support pieces 24, 24 of the unit base 21 are bent with respect to the base portion 22 at an angle wider than 90 degrees. After mounting the second link 32 inside the opening 34 of the first link 31, the base support shafts 41, 41 of the second link 32 are hooked on the latching recesses 25 a, 25 a of the unit base 21. . Then, by bending the support pieces 24, 24 to an angle perpendicular to the base portion 22, the support holes 24 a, 24 a formed in the support pieces 24, 24 become the base support shafts 35, 35 of the first link 31. As shown in FIG. 3, the elevating support mechanism 30 is incorporated in the unit base 21.

  As shown in FIGS. 1 and 3, the elastic member 50 is installed on the switch portion of the membrane laminate 13 in each key mounting portion. The elastic member 50 is made of a light-transmitting synthetic rubber material, and includes an upper contact portion 51 that hits the key top 2a, a lower contact portion 52 that is installed on the membrane laminate 13, and a thin-walled material between them. It has an elastic deformation part 53. Inside the lower abutment portion 52 and the elastic deformation portion 53 is a gap portion, and a pressing portion 54 extending downward from the upper abutment portion 51 is formed in the gap portion.

  The elastic member 50 is fixed to the surface 13 a of the membrane laminate 13 with an adhesive or the like before the key unit 20 is attached to the support substrate portion 10. When the key unit 20 is attached to the support substrate portion 10, the elastic member 50 enters the circular opening 39 of the second link 31.

  When the unit base 21 is mounted on the support substrate portion 10, a pair of mounting protrusions 26 and 26 formed on the Y 1 side are inserted into the escape holes 13 b and 13 b of the membrane laminate 13, and further to the illumination plate 11. The support holes 11a and 11a thus formed and the holes 12a and 12a formed in the reflection sheet 12 are inserted. Further, a pair of mounting protrusions 27 and 27 formed on the Y2 side of the unit base 21 are inserted into the escape holes 13c and 13c of the membrane laminate 13, and the support holes 11a and 11a formed in the illumination plate 11 and the reflection The sheet 12 is inserted into the holes 12a and 12a.

  As shown in FIG. 1, in the state where the base portion 22 of the unit base 21 is installed on the surface 13a of the membrane laminate 13 of the support substrate portion 10, the attachment protrusions 26 and 26 and the attachment protrusions 27 and 27 are reflected sheets. 12 is bent at the lower surface. In the support substrate portion 10, since the illumination plate 11 has the highest rigidity, the fixing force due to the bending of the attachment projections 26, 26 and the attachment projections 27, 27 is supported by the unit base 21, and the unit base 21 is substantially illuminated. 11 is fixed.

  As shown in FIG. 1, a pair of fitting protrusions 61 are provided on the lower surface of the key top 2a on the Y2 side with a gap in the X direction. A fitting support recess 62 is formed in each fitting projection 61. A pair of hook portions 63 are provided on the Y1 side of the lower surface of the key top 2a with a gap in the X direction. Each hook part 63 is formed with a sliding concave part 64 opened in the Y1 direction.

  After the key unit 20 is attached to the support substrate portion 10, the front link support shafts 36, 36 of the first link 31 are inserted into the sliding recess 64 of the hook portion 63 in the Y2 direction, and then the second link. The key top 2 a is assembled to the lifting support mechanism 30 of the key unit 20 by fitting the 32 front support shafts 42 and 42 into the fitting support recess 62.

  As shown in FIG. 1, in each key unit 20 of the keyboard device 1, the key top 2 a is lifted upward by the elastic force of the elastic member 50. When the key top 2 a is pushed downward with a finger, the base support shafts 35, 35 of the first link 31 rotate inside the support holes 24 a, 24 a of the unit base 21, and the tip of the second link 32. The support shafts 42 and 42 rotate inside the fitting support recess 62 of the key top 2a. Also, the base support shafts 41 and 41 of the second link 32 slide in the latching recesses 25a and 25a of the unit base 21, and the front support shafts 36 and 36 of the first link 31 are of the key top 2a. The key top 2a is lowered by sliding in the sliding recesses 64, 64.

  When the key top 2a is lowered, the elastic deformation portion 53 of the elastic member 50 is crushed, the switch portion of the membrane laminate 13 is pressed by the pressing portion 54 of the elastic member 50, and the contacts come into contact with each other to generate a key input signal. Can be made.

  In the keyboard device 1 of the above embodiment, the unit base 21 of the key unit 20 is substantially fixed to the illumination plate 11. Since the support substrate part 10 is comprised by the illumination board 11, the reflection sheet 12, and the membrane laminated body 13, the support substrate part 10 can be made thin, and the whole keyboard apparatus 1 can be comprised thinly. Further, unlike the prior art, it is not necessary to provide the support substrate portion 10 with a protruding portion for rotatably supporting the lifting support mechanism (support link mechanism) 30, and only the support hole 11 a is formed in the illumination plate 11. Since the key unit 20 can be fixed with the key unit 20, the structure for fixing the key unit 20 can be easily configured.

  In addition, light emitted from a light source such as an LED provided in the keyboard device 1 passes through the interior of the illumination plate 11 that supports the key unit 20, is reflected by the irregular reflection portion of the lower surface 11b of the illumination plate 11, and is illuminated. It exits upward from the surface 11 c of the plate 11, passes through the light transmitting portion 15 of the membrane laminate 13, and is given to the key top 2 a. Then, as shown in FIG. 2, the illumination instruction portions of symbols such as characters formed on the key tops 2a, 2b, 2c, 2d,...

  In addition, the reflective sheet 12 can be omitted by forming a white or metallic coating film for reflecting light on the lower surface 11 b of the illumination plate 11. In this case, the attachment protrusions 26 and 26 and the attachment protrusions 27 and 27 extending from the unit base 21 are inserted into the support hole 11a, and then bent at the lower surface 11b of the illumination plate 11, so that the unit is directly applied to the illumination plate 11. The base 21 is fixed.

  In the keyboard device 101 according to the second embodiment of the present invention shown in FIG. 5, a reinforcing plate 71 made of a metal plate is stacked on the lower side of the support substrate portion 10 shown in FIG. The support substrate portion 10 and the reinforcing plate 71 are fixed with an adhesive or screwed together, or are fitted to each other at an uneven fitting portion provided at a plurality of locations. A relief hole 72 is formed in the reinforcing plate 71, and a bending fixing portion in which the attachment protrusions 26 and 26 and the attachment protrusions 27 and 27 of the unit base 21 are bent on the lower surface of the reflection sheet 12 is provided in the escape hole 72. Located inside.

  In the keyboard device 101 shown in FIG. 5, the unit base 21 is substantially fixed to the illumination plate 11, but the illumination plate 11 is reinforced by a reinforcement plate 71. Therefore, it becomes possible to prevent the illumination plate 11 carrying the plurality of key units 20 from being greatly bent or broken.

  Since the reinforcing plate 71 reinforces the illumination plate 11, a thin flat plate can be used, and even if the reinforcing plate 71 is provided, the entire keyboard device 101 can be configured to be thin.

  In the keyboard device 102 according to the third embodiment shown in FIG. 6, the support substrate portion 110 includes an illumination plate 11, a membrane laminate 13 thereon, a reflection sheet 12 on the lower surface of the illumination plate 11, and a reflection sheet. 12 and a reinforcing plate 73 made of a metal plate stacked under 12. A support hole 74 is opened in the reinforcing plate 73 at a position corresponding to the support hole 11 a of the illumination plate 11.

  In the keyboard device 102, the attachment protrusions 26 and 26 and the attachment protrusions 27 and 27 bent from the unit base 21 are inserted into the escape holes 13 b and 13 b and the escape holes 13 c and 13 c of the membrane laminate 13. It is inserted into the four support holes 11 a, passes through the four holes 12 a of the reflection sheet 12, and is inserted into the four support holes 74 formed in the reinforcing plate 73. The lower ends of the attachment protrusions 26, 26 and the attachment protrusions 27, 27 are folded at the lower surface of the reinforcing plate 73.

  In the keyboard device 102, the unit base 21 is fixed to both the illumination plate 11 and the reinforcing plate 73. Therefore, it becomes possible to prevent the illumination plate 11 carrying the plurality of key units 20 from being greatly bent or broken.

  Since the reinforcing plate 71 reinforces the illumination plate 11, a thin flat plate can be used, and even if the reinforcing plate 71 is provided, the entire keyboard device 101 can be configured to be thin.

  FIG. 7 shows a keyboard device 201 according to the fourth embodiment of the present invention. In FIG. 7, only the unit base 121 and the illumination plate 111 are shown. Actually, as shown in FIG. 3, the membrane laminate 13 is provided on the illumination plate 111, the reflection sheet 12 is provided on the lower surface of the illumination plate 111, and the elevation support mechanism 30 is supported on the unit base 121. In FIG. 7, illustration of these members is omitted.

  In the unit base 121 shown in FIG. 7, a pair of mounting projections 26a and 26a are bent on the Y1 side of the base portion 22, and a pair of mounting projections 27a and 27a are bent on the Y2 side. The mounting protrusions 26a and 26a and the mounting protrusions 27a and 27a have the same folding direction. The other structure of the unit base 121 is the same as that of the unit base 21 shown in FIG.

  The mounting protrusions 26a, 26a and the mounting protrusions 27a, 27a are oriented in the X1-X2 direction in the plate surface direction. Therefore, the longitudinal direction of the long holes, which are all the support holes 11d formed in the illumination plate 111, is directed in the X1-X2 direction.

  Similar to the above embodiment, the attachment protrusions 26a, 26a and the attachment protrusions 27a, 27a are inserted into the escape holes 13b, 13c of the membrane laminate 13, and further inserted into the support holes 11d of the illumination plate 111, thereby attaching the attachment protrusions 26a. 26a and the lower ends of the mounting projections 27a, 27a are bent at the lower surface of the illumination plate 111, bent at the lower surface of the reflection sheet 12, or bent at the lower surface of the reinforcing plate 73.

  In the illumination plate 111 shown in FIG. 7, the longitudinal directions of all the support holes 11d are directed in the X1-X2 direction. Therefore, it is preferable to direct the incident direction of light incident on the illumination plate 111 from a light source such as an LED in the X1-X2 direction. By configuring in this way, it is possible to reduce the probability that the illumination light propagating inside the illumination plate 111 is attenuated by the support hole 11d.

  Since a plurality of light sources are provided, it is preferable to direct the incident direction of light from the light source located closest to the key mounting portion to which the unit base 121 is attached to the illumination plate 111 in the X1-X2 direction.

  In the first embodiment shown in FIG. 3 and FIG. 4, the plate surface direction of the mounting projections 26, 26 bent from the unit base 21 is the Y1-Y2 direction, and the mounting projections 26, 26 are inserted into the illumination plate 11. The longitudinal direction of the long hole of the support hole 11a is the Y1-Y2 direction. Further, the mounting protrusions 27, 27 bent from the unit base 21 have a plate surface direction in the X1-X2 direction, and the longitudinal direction of the long hole of the support hole 11a is in the X1-X2 direction.

  In this case, the incident direction of light from the light source closest to the mounting projections 26, 26 to the illumination plate 11 is the Y 1 -Y 2 direction, and the light source closest to the mounting projections 27, 27 starts from the light source 11. It is preferable that the incident direction of the light is X1-X2 direction.

  As a unit base structure, the attachment protrusion 26a and the attachment protrusion 27a may be formed in parallel directions.

1, 101, 102, 201 Keyboard devices 2a, 2b, 2c, 2d Key tops 10, 110 Support substrate part 11, 111 Illumination plate 11a Support hole 12 Reflective sheet 13 Membrane laminates 13b, 13c Escape hole 14 Shield part 15 Translucent Part 20 Key unit 21 Unit base 26, 26a, 27, 27a Mounting protrusion 30 Lifting support mechanism 31 First link 32 Second link 50 Elastic member 71, 73 Reinforcement plate 72 Relief hole 74 Support hole

Claims (7)

In a keyboard device in which a plurality of lift support mechanisms that support the key tops so as to be lifted and a switch unit that is operated by being pressed by the key tops are arranged,
A membrane laminate having a plurality of switch parts is overlaid on a translucent illumination plate that transmits illumination light, and the membrane laminate is translucent at least in a region facing the key top,
A unit base that supports the elevating support mechanism is installed on the membrane laminate, and a plurality of attachment protrusions provided on the unit base pass through the membrane laminate and are formed on the illumination plate. A keyboard device, wherein the unit base is supported by being inserted into a hole.   The keyboard device according to claim 1, wherein the attachment protrusion is bent at a lower surface of the illumination plate.   The keyboard device according to claim 1, wherein a reflection sheet is provided on a lower surface of the illumination plate, and the attachment protrusion is inserted into a hole formed in the reflection sheet and bent at the lower surface of the reflection sheet.   The keyboard device according to claim 2, wherein a metal reinforcing plate is provided below the reflecting sheet.   The metal reinforcing plate is provided on the lower side of the illumination plate, and the mounting protrusion is inserted into a support hole formed in the reinforcing plate and bent at the lower surface of the reinforcing plate. Keyboard device.   The keyboard device according to claim 1, wherein the membrane laminate is provided with a shielding portion that restricts light transmission between adjacent key tops.   7. The light emitting device according to claim 1, wherein the mounting protrusion has a flat plate shape, the support hole formed in the illumination plate is a long hole, and light directed from the light source toward the longitudinal direction of the long hole is given to the illumination plate. A keyboard device according to any one of the above.

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