JP7274531B2 - KEYBOARD DEVICE, ELECTRONIC DEVICE, AND METHOD OF MANUFACTURING KEYBOARD DEVICE - Google Patents

Description

The present invention relates to a keyboard device, an electronic device, and a method of manufacturing a keyboard device.

As a keyboard device for use in electronic devices such as notebook PCs, the present applicant attaches a holder component, which is the base of a keycap support mechanism, and positioning components to an electronic device housing, to a metal base plate. A structure formed simultaneously by insert molding has been proposed (see Patent Document 1).

Japanese Patent No. 6830972

The keyboard device as described above is sometimes used as a so-called backlight keyboard, in which each key top can emit light with an LED light source or the like. A backlight keyboard generally has a configuration in which a light guide plate guides light from a light source to each keycap.

By the way, in order to use the keyboard device of Patent Document 1 as a backlight keyboard, it is necessary to form the holder part under each keycap with a light-transmissive material. Then, the positioning component that is insert-molded at the same time as the holder component is also made of a light-transmissive material. The positioning component is arranged, for example, under the frame that partitions between the keycaps, but is partly exposed in the gap between the keycap and the frame. For this reason, it has been found that in such a configuration, the light guided by the light guide plate also passes through the positioning component, causing light leakage through the gap around the key cap. When light leakage occurs, the appearance quality of the keyboard device and electronic equipment equipped with the keyboard device is impaired.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a keyboard device, an electronic device, and a keyboard device manufacturing method that can suppress the occurrence of light leakage.

A keyboard device according to a first aspect of the present invention is a keyboard device mounted on a housing, comprising a metal base plate, a membrane sheet laminated on the upper surface of the base plate, and a support mechanism on the upper surface side of the base plate. a plurality of keycaps vertically movable via the base plate; a light source module laminated on the lower surface of the base plate for irradiating the keycaps with light; and a light-transmitting resin material bonded to the base plate. a plurality of holder parts for attaching the support mechanism to the base plate; and a positioning part made of the same material as the holder parts and joined to the base plate for positioning the base plate with respect to the housing. , wherein the membrane sheet vertically overlaps the positioning component.

An electronic device according to a second aspect of the present invention includes a housing and a keyboard device mounted on the housing, wherein the keyboard device includes a metal base plate and a membrane laminated on the upper surface of the base plate. a sheet, a plurality of keycaps vertically movable via a support mechanism on the upper surface side of the base plate, a light source module stacked on the lower surface of the base plate for irradiating the keycaps with light, and light transmissiveness. a plurality of holder parts formed of a resin material and joined to the base plate for attaching the support mechanism to the base plate; a positioning component for positioning with respect to the body, wherein the membrane sheet vertically overlaps the positioning component.

A method for manufacturing a keyboard device according to a third aspect of the present invention is a method for manufacturing a keyboard device to be mounted on a housing, in which a protrusion is formed by projecting a part of a metal base plate downward. a step of forming a portion; a positioning component for positioning the base plate with respect to the housing by setting the base plate on which the protrusion is formed in a mold and injecting a light-transmissive resin; a step of joining a plurality of holder parts for attaching a support mechanism that supports a keycap on the upper surface side of a base plate to the base plate by insert molding; and a lower surface of the base plate to which the positioning parts and the holder parts are joined. a step of attaching a light source module for irradiating the keycap with light through the holder component on the side; laminating a membrane sheet on the upper surface of the base plate to which the positioning component and the holder component are joined; and vertically overlapping the positioning component.

According to the aspect of the present invention, the occurrence of light leakage can be suppressed.

FIG. 1 is a top view of an electronic device including a keyboard device according to an embodiment. FIG. 2 is an enlarged side cross-sectional view of a main part schematically showing the configuration of the keyboard device. FIG. 3 is a schematic perspective view of a protruding portion having an aperture shape and its peripheral portion. FIG. 4 is a schematic perspective view of a protrusion having a plate piece and its peripheral portion. FIG. 5 is a schematic exploded perspective view of the light source module. FIG. 6 is a schematic side cross-sectional view for explaining a method of joining the holder component and the positioning component to the base plate.

BEST MODE FOR CARRYING OUT THE INVENTION A keyboard device according to the present invention will now be described in detail with reference to the accompanying drawings, exemplifying preferred embodiments of an electronic device equipped with this device.

FIG. 1 is a top view of an electronic device 12 having a keyboard device 10 according to an embodiment. The electronic device 12 is a clamshell notebook PC. The electronic device 12 includes a housing 14 in which the keyboard device 10 is mounted, and a display housing 18 in which the display 16 is mounted. The present invention may be applied to electronic devices other than notebook PCs. The present invention may be applied to, for example, an external keyboard device used for a desktop PC or the like, or a keyboard device serving as a detachable expansion device for a tablet PC.

Hereinafter, the keyboard device 10 will be described based on the posture used by the user while it is mounted in the housing 14 of the electronic device 12 as shown in FIG. The width direction will be referred to as left and right for explanation.

The housing 14 accommodates various electronic components such as a motherboard with a CPU mounted therein, an SSD, a memory, and a battery device. The keyboard device 10 is provided on the upper surface 14 a of the housing 14 . The display housing 18 has the display 16 on the front. The display 16 is composed of, for example, a liquid crystal display, an organic EL display, or the like. The display housing 18 is rotatably connected to the rear end of the housing 14 via hinges 20 .

FIG. 2 is an enlarged side cross-sectional view of a main part schematically showing the configuration of the keyboard device 10. As shown in FIG.

As shown in FIGS. 1 and 2, the keyboard device 10 includes a plurality of key switches 22, a base plate 24, a plurality of holder parts 26, a positioning part 28, a membrane sheet 30, and a light source module 32. . The keyboard device 10 of the present embodiment is an isolation type keyboard device in which the periphery of the key cap 34, which is the operating portion of each key switch 22, is partitioned by a frame portion 36. As shown in FIG.

Each key switch 22 has a key cap 34 and a support mechanism 37 . The support mechanism 37 is an actuator that supports the key cap 34 on the upper surface 24a side of the base plate 24 so as to be vertically movable. The support mechanism 37 has a pantograph mechanism in which a pair of rotatably intersecting frames 37a and 37b are bridged between the lower surface of the key cap 34 and the upper surface 24a of the base plate 24, and a rubber dome (not shown).

In the configuration example shown in FIG. 2, the support mechanism 37 has slide pins and rotary shaft pins arranged in the front-rear direction on the upper sides of the frames 37a and 37b. A rotating pin is rotatably supported on the lower surface side of the key cap 34 . A slide pin 37c and a rotating shaft pin 37d are also provided on the lower side of each of the frames 37a and 37b. The slide pin 37c and the rotating shaft pin 37d are supported by a holder component 26 joined to the upper surface 24a of the base plate 24. As shown in FIG. The rubber dome is a dome-shaped member made of flexible elastic material such as silicone rubber. intervening in Each keycap 34 elastically deforms the rubber dome to press the membrane sheet 30 when pressed, and returns to its original position due to the elastic force of the rubber dome when the pressed operation is released.

Each holder component 26 is a rectangular frame-shaped member arranged on the upper surface 24a of the base plate 24, and supports the slide pin 37c and the rotating shaft pin 37d on the lower side of the support mechanism 37. As shown in FIG. The holder component 26 is formed with a lateral hole 26b in which the slide pin 37c is horizontally movably supported, and a bearing hole 26c in which the rotating shaft pin 37d is rotatably supported.

The holder component 26 is joined to the base plate 24 by insert molding of a resin material. The resin material forming the holder component 26 is transparent or translucent, and has light transmittance. Holes 38 are formed through the base plate 24 at positions corresponding to the key switches 22 . Each holder part 26 is joined to the inner wall surface and edge of the hole 38 . The holder part 26 is joined to the upper surface 24a of the edge of the hole 38, and is joined to the inner wall surface of the hole 38 with the pin-shaped projection 26a protruding from the lower surface fitted into the hole 38. As shown in FIG. As a result, the holder component 26 is firmly joined to the base plate 24 without looseness. As shown in FIG. 2, the membrane sheet 30 is laminated on the upper surface 24a of the base plate 24 so as to surround the holder component 26. As shown in FIG. For this reason, the portion of the holder component 26 shown in FIG. 2 that is joined to the upper surface 24a is hidden by the membrane sheet 30, but actually contacts the upper surface 24a.

A base plate 24 is a mounting plate for each key switch 22 . The base plate 24 is formed by punching, cutting, or forming a thin metal plate such as a stainless steel plate or an aluminum plate. The base plate 24 is formed with a plurality of holes 38 corresponding to the respective key switches 22 and at least one (three in this embodiment) holes 40 .

As shown in FIG. 1, in the case of this embodiment, three holes 40 are provided side by side in the left-right direction, and a positioning component 28 is provided for each hole 40 . As shown in FIG. 2, the base plate 24 has a protruding portion 41 that partially protrudes toward the lower surface 24b. The protruding portion 41 has, for example, a drawing shape in which the base plate 24 is smoothly pushed out toward the lower surface 24b, and protrudes in a dish shape so as to surround the entire circumference of the hole portion 40 (see FIG. 3). The hole 40 penetrates through the center of the projection 41 .

Each positioning component 28 positions the base plate 24 with respect to the frame portion 36 , that is, the housing 14 . The positioning component 28 of this embodiment is positioned with respect to a positioning pin 42 provided on the frame portion 36 . The positioning part 28 is joined to the base plate 24 by insert molding of a resin material. Since the positioning component 28 is integrally insert-molded with the holder component 26 , it is made of the same resin material as the holder component 26 . Therefore, the positioning component 28 is also transparent or translucent and has light transmission properties.

Each positioning part 28 is joined to the inner wall surface 40a and the edge 40b of each hole 40. As shown in FIG. The positioning component 28 has a cylindrical portion 28a joined to the inner wall surface 40a and flange portions 28b and 28c joined to the edge portion 40b. A positioning hole 28d into which a pin 42 projecting from the frame portion 36 is inserted is formed through the cylindrical portion 28a. The cylindrical portion 28 a is joined along the inner wall surface 40 a of the hole portion 40 . The flange portion 28b is joined to the upper surface 41a of the projecting portion 41 . The flange portion 28c is joined to the lower surface 41b of the projecting portion 41 .

Therefore, the positioning part 28 is firmly joined to the base plate 24 so as to grip the protruding part 41 . Accordingly, the positioning component 28 is arranged such that the upper surface 28e (the surface of the flange portion 28b) is flush with or below the upper surface 24a of the base plate 24. As shown in FIG.

Any protrusion of the base plate 24 other than the configuration (protrusion 41) shown in FIG. may be configured.

For example, as shown in FIG. 4 , the base plate 24 may be configured to have a projecting portion 43 instead of the projecting portion 41 . The projecting portion 43 has a plate piece formed by cutting and raising a portion of the base plate 24 toward the lower surface 24 b , and is provided around the hole portion 40 as a pair, for example. The protruding portion 43 is substantially the same as the protruding portion 41 shown in FIG. 2 in side cross-sectional shape, and is a claw-like plate piece bent downward. The protruding portions 43 are preferably installed at equal intervals along the circumferential direction of the hole portion 40, and for example, three or more protruding portions may be arranged side by side. The positioning part 28 is also joined to the projecting portion 43 in the same shape and configuration as the projecting portion 41 . That is, the cylindrical portion 28a of the positioning part 28 is joined to the inner wall surface 43a of each projecting portion 43 so as to draw a circle passing through the inner wall surface 43a. The flange portions 28b and 28c are joined to the upper surfaces 43b and 43c of the projecting portion 43, respectively.

The membrane sheet 30 is a switch sheet for detecting depression of each keycap 34, and is laminated on the upper surface 24a of the base plate 24 (see FIG. 2). The membrane sheet 30 extends over substantially the entire upper surface 24 a of the base plate 24 so as to be arranged below all the key switches 22 . The membrane sheet 30 is, for example, a switch sheet with a three-layer structure that closes contacts when pressed. In the membrane sheet 30, for example, when the position where the fixed contact and the movable contact overlap is pressed by the rubber dome, the fixed contact and the movable contact are brought into close contact, thereby closing the contact.

As shown in FIG. 2 , the membrane sheet 30 has a plurality of openings 44 overlapping the holes 38 of the base plate 24 and at least one (three in this embodiment) openings 45 overlapping the holes 40 . The projections 26a of the holder components 26 are inserted through the respective openings 44. As shown in FIG. The pin 42 of the frame portion 36 is inserted through the opening 45 . The membrane sheet 30 is arranged so that the peripheral edge portion (edge portion 45 a ) of the opening 45 covers the upper surface 28 e of the positioning component 28 . That is, the membrane sheet 30 overlaps the positioning part 28 in the vertical direction.

As shown in FIGS. 1 and 2, the frame portion 36 is a mesh-like frame member having a plurality of key insertion holes 36a into which the keycaps 34 are vertically movably inserted. Each keycap 34 is separated from adjacent keycaps 34 by a frame portion 36 so that each keycap 34 is arranged independently. The frame portion 36 constitutes a part of the housing 14, and may be formed integrally with the cover material forming the upper surface 14a of the housing 14, or may be formed separately from the cover material. may be

As shown in FIG. 2, the frame portion 36 covers the opening 45 and the positioning hole 28d, and also overlaps the edge portion 45a of the membrane sheet 30 in the vertical direction. However, the positioning part 28 cannot be made extremely small due to the function of positioning the frame part 36, and it is necessary to secure a certain size. Therefore, it is difficult to hide the entire positioning part 28 under the frame part 36, and a part of the positioning part 28 is exposed in the gap C between the outer side surface 34a of the key cap 34 and the inner wall surface of the key insertion hole 36a. That is, the positioning component 28 partially overlaps the gap C in the vertical direction.

FIG. 5 is a schematic exploded perspective view of the light source module 32. FIG. As shown in FIGS. 2 and 5, the light source module 32 is a multi-part laminated structure, and includes, from top to bottom, a light shielding sheet 46, a light guide plate 47, a light source substrate 48, and a reflector 49. , has

The light source substrate 48 extends laterally along the front edge of the light source module 32 , that is, along the front edge of the keyboard device 10 . The light source substrate 48 has, for example, a light source composed of LEDs (Light Emitting Diodes) and FPCs (Flexible printed circuits) on which the light source is mounted. A plurality of light sources are mounted side by side on the upper surface of the FPC and face the front side surface of the light guide plate 47 . The FPC is attached to the lower surface of the lowermost reflector plate 49 and connected to the motherboard or the like in the housing 14 .

The light guide plate 47 is a plate or sheet made of translucent resin such as PET, polycarbonate, acrylic, or the like. The light guide plate 47 causes the keycaps 34 to emit light by guiding the light emitted from the light sources arranged in the left-right direction in the front-rear direction (see the light L indicated by the dashed-dotted line in FIG. 2).

The light shielding sheet 46 is a thin sheet made of a material that shields light, and is laminated on the upper surface of the light guide plate 47 . The light shielding sheet 46 prevents the light L guided by the light guide plate 47 from being emitted upward from a portion other than directly below each keycap 34 . Therefore, the light shielding sheet 46 is formed with cutout holes 46a for allowing the light L to pass therethrough at positions overlapping the respective keycaps 34. As shown in FIG.

The reflector 49 is a plate or sheet made of a material that reflects light. The reflecting plate 49 is a member that covers the lower surface of the light guide plate 47 to prevent the light L passing through the light guide plate 47 from leaking to the lower surface side, thereby improving the light guiding efficiency.

The light shielding sheet 46, the light guide plate 47, and the reflector plate 49 are provided with mounting holes 46b, 47a, and 49a communicating with each other in the vertical direction. The light source module 32 is fixed to the lower surface 24b of the base plate 24 with screws passing through the mounting holes 46b, 47a, and 49a from bottom to top.

In such a light source module 32, the light L emitted from each light source of the light source substrate 48 is reflected by the reflector 49 and guided forward and backward by the light guide plate 47, passes through the cut-out hole 46a of the light shielding sheet 46, and Each keycap 34 is illuminated from the rear side through the holder component 26 . Each keycap 34 has a transmissive portion 34b made of a light-transmitting material, for example, in a portion of letters or symbols such as alphabets formed on the surface. Therefore, the light L that has passed through the cutout hole 46a from the light guide plate 47 is transmitted through the transmission portion 34b to cause each keycap 34 to emit light.

Next, one procedure of the manufacturing method of the keyboard device 10 of this embodiment will be described. FIG. 6 is a schematic side cross-sectional view for explaining a method of joining the holder component 26 and the positioning component 28 to the base plate 24. As shown in FIG.

In this manufacturing method, first, as shown in FIG. 6, a base plate 24 having holes 38 and 40 and projections 41 (43) formed in advance by machining or the like is placed in a mold 50 consisting of an upper mold 50a and a lower mold 50b. set. The base plate 24 has the hole 38 corresponding to the cavity 50c and the hole 40 corresponding to the cavity 50d. The cavity 50c is a portion where the holder component 26 is molded. The cavity 50d is a portion where the positioning component 28 is molded.

Next, a light-transmissive resin material forming the holder component 26 and the positioning component 28 is injected into the mold 50 . As a result, as shown in FIG. 3, the holder component 26 and the positioning component 28 are joined to the base plate 24 with the same mold 50 by insert molding. Thereafter, the light source module 32, the key switch 22, the membrane sheet 30, and the like are attached to the base plate 24 to which the holder component 26 and the positioning component 28 are joined, thereby completing the manufacture of the keyboard device 10. FIG. The membrane sheet 30 vertically overlaps the edge 45a of the opening 45 with respect to the positioning component 28. As shown in FIG.

The thus manufactured keyboard device 10 is positioned with respect to the housing 14 by inserting the pins 42 of the frame portion 36 into the positioning holes 28 d of the positioning component 28 . At the same time, each key cap 34 is placed in each key insertion hole 36a, and the frame portion 36 and the base plate 24 are fixed with screws. As a result, the keyboard device 10 is mounted on the electronic device 12 .

In the keyboard device 10 of this embodiment, the holder component 26 and the positioning component 28 are formed by insert molding in the same mold 50 at the same time and in a mutually positioned state. Therefore, the distance (pitch) between the center of the positioning hole 28d, which serves as a positioning reference for the frame portion 36, and the center of the holder component 26, which serves as a positioning reference for the keycap 34, falls within a desired tolerance. In other words, the keyboard device 10 can position each keycap 34 with respect to the frame portion 36 with high accuracy when attached to the housing 14 . As a result, in the keyboard device 10, the key cap 34 is prevented from interfering with the frame portion 36, and the gap C becomes uniform, thereby improving the appearance quality.

However, in the keyboard device 10, since the positioning component 28 and the holder component 26 are integrally formed in the same mold 50, not only the holder component 26, which needs to transmit the light L, but also the positioning component 28 is made of a light transmissive material. As a result, the light L guided by the light guide plate 47 may be guided to the positioning component 28 (see light L1 indicated by a dashed line in FIG. 2). Here, if the positioning component 28 were exposed in the gap C between the key cap 34 and the frame portion 36, there is a concern that the light L1 passing through the positioning component 28 would leak out through the gap C.

Therefore, in the keyboard device 10 according to the present embodiment, the membrane sheet 30 is arranged so as to overlap the positioning component 28 in the vertical direction. As a result, the keyboard device 10 can block the light L1 introduced from the light guide plate 47 to the positioning component 28 with the membrane sheet 30, and can suppress light leakage from the gap C. FIG. In this way, the keyboard device 10 also uses the membrane sheet 30 as a shielding sheet for preventing light leakage, so it is possible to suppress light leakage while suppressing an increase in the number of parts and costs.

In particular, in the keyboard device 10, the positioning component 28 is joined to the base plate 24 by gripping the protruding portion 41 (43) provided to protrude from the lower surface 24b side of the base plate 24. As shown in FIG. As a result, the positioning component 28 is arranged so that the joint position with respect to the base plate 24 is as low as possible, and the upper surface 28e thereof is arranged flush with or below the upper surface 24a of the base plate 24. As shown in FIG. In other words, in the keyboard device 10, an empty space is formed above the positioning component 28, so that the membrane sheet 30 can be arranged in this space. As a result, the membrane sheet 30 can smoothly cover the upper surface 28e of the positioning component 28 without forming creases or flexures, thereby suppressing the occurrence of malfunctions in the switch portion.

The positioning component 28 may be covered with the membrane sheet 30 at least at the portion overlapping the gap C in the vertical direction. That is, the membrane sheet 30 does not have to cover the entire 360-degree circumference of the positioning component 28 . The membrane sheet 30 should be arranged so as to cover at least the position where the positioning part 28 protrudes from the bottom of the frame portion 36 and is exposed in the gap C. As shown in FIG.

As shown in FIG. 2, the membrane sheet 30 also vertically overlaps the frame portion 36 at the position where it overlaps the positioning component 28 . That is, the membrane sheet 30 has its edge portion 45 a inserted below the frame portion 36 . Therefore, the keyboard device 10 can more reliably suppress light leakage from the positioning component 28 .

By the way, as shown in FIG. 2, it is necessary to cut the light guide plate 47 around the positioning component 28 . For this reason, the keycaps 34 (see the three keycaps 34A in FIG. 1) located behind the cut portion (positioning component 28) in the irradiation direction of the light from the light source board 48 (the front-rear direction) receive a sufficient amount of light. There is a concern that the amount of light emitted may decrease because it cannot be obtained. In this respect, the keyboard device 10 employs a configuration in which light leakage is suppressed by shielding the positioning component 28 with the membrane sheet 30. Therefore, the cut amount of the light guide plate 47 is also set to the circumference of the projecting portion 41 (43). It is sufficient to ensure a minimum, and the reduction in the amount of light emitted from the keycap 34A shown in FIG. 1 can be suppressed.

It goes without saying that the present invention is not limited to the above-described embodiments, and can be freely modified without departing from the gist of the present invention.

For example, the keyboard device 10 may have a configuration in which the keycaps 34 are not partitioned by the frame portion 36 . In this case, the frame portion 36 is not in a mesh shape, but in a rectangular outer frame shape surrounding the outer periphery of the end keycaps 34 arranged along the outer edge of the keyboard device 10 . In this case also, the membrane sheet 30 can cover the positioning component 28 exposed in the gap between the outer frame-shaped frame portion 36 and the key cap 34 at the end adjacent thereto.

In the above, the pin 42 of the frame portion 36 is inserted into the positioning component 28 to position the keyboard device 10 on the frame portion 36 (housing 14). This positioning structure may be configured such that the positioning component 28 is provided with a pin protruding upward, and the frame portion 36 (housing 14) is provided with a positioning hole into which the pin is inserted. In this case as well, the membrane sheet 30 should be arranged so that the edges 45a of the openings 45 cover the pins of the positioning parts 28 to prevent light leakage therethrough.

In the above description, the keyboard device 10 is mounted on the housing 14 of the electronic device 12. However, when the keyboard device 10 is configured to be externally attached to a desktop PC or the like, the keyboard device 10 can be mounted externally. It may be positioned with respect to the housing of the device.

REFERENCE SIGNS LIST 10 keyboard device 12 electronic device 14 housing 22 key switch 24 base plate 26 holder component 28 positioning component 30 membrane sheet 32 light source module 34 key cap 36 frame portion 37 support mechanism 41, 43 projecting portion 46 light shielding sheet 47 light guide plate 48 light source substrate 49 Reflector 50 Mold

Claims (11)

A keyboard device mounted on a housing,
a metal base plate,
a membrane sheet laminated on the upper surface of the base plate;
a plurality of keycaps vertically movable via a support mechanism on the upper surface side of the base plate;
a light source module stacked on the lower surface of the base plate and configured to irradiate the keycap with light;
a plurality of holder parts formed of a light-transmitting resin material and joined to the base plate for attaching the support mechanism to the base plate;
a positioning component formed of the same material as the holder component and joined to the base plate for positioning the base plate with respect to the housing;
with
A keyboard device, wherein the membrane sheet vertically overlaps the positioning component. A keyboard device according to claim 1, comprising:
The base plate has a protrusion provided to protrude to the lower surface side,
The keyboard device, wherein the positioning component is joined to the base plate so as to grip the protrusion. 3. The keyboard device according to claim 1 or 2,
The housing has a plurality of key insertion holes into which the keycaps are vertically movably inserted, and has a frame portion that partitions adjacent keycaps,
A gap is provided between the inner wall surface of the key insertion hole and the outer surface of the key cap,
The positioning component vertically overlaps the gap,
A keyboard device, wherein the positioning component is covered with the membrane sheet at least in a portion that overlaps the gap. A keyboard device according to claim 3, wherein
the top surface of the positioning component is arranged flush with or below the top surface of the base plate;
A keyboard device, wherein the membrane sheet is placed on an upper surface of the positioning part. The keyboard device according to any one of claims 1 to 4,
The base plate has a hole that penetrates in the vertical direction,
The positioning component is arranged inside the hole and has a positioning hole penetrating in the vertical direction,
The housing has a pin inserted into the positioning hole and positioned,
the membrane sheet has an opening that communicates with the positioning hole and through which the pin is inserted;
A keyboard device, wherein the membrane sheet has an edge portion of the opening vertically overlapping the positioning component. A keyboard device according to claim 2, wherein
A keyboard device, wherein the protruding portion has an aperture shape in which a portion of the base plate is pushed downward. A keyboard device according to claim 2, wherein
The keyboard device, wherein the projecting portion has a plate piece obtained by cutting a part of the base plate downward. an electronic device,
a housing;
a keyboard device mounted on the housing;
with
The keyboard device
a metal base plate,
a membrane sheet laminated on the upper surface of the base plate;
a plurality of keycaps vertically movable via a support mechanism on the upper surface side of the base plate;
a light source module stacked on the lower surface of the base plate and configured to irradiate the keycap with light;
a plurality of holder parts formed of a light-transmitting resin material and joined to the base plate for attaching the support mechanism to the base plate;
a positioning component formed of the same material as the holder component and joined to the base plate for positioning the base plate with respect to the housing;
with
The electronic device, wherein the membrane sheet vertically overlaps the positioning component. The electronic device according to claim 8,
The housing has a plurality of key insertion holes into which the keycaps are vertically movably inserted, and has a frame portion that partitions adjacent keycaps,
A gap is provided between the inner wall surface of the key insertion hole and the outer surface of the key cap,
The positioning component vertically overlaps the gap,
The electronic device according to claim 1, wherein at least a portion of the positioning component that overlaps the gap is covered with the membrane sheet. The electronic device according to claim 8 or 9,
The base plate has a protrusion provided to protrude to the lower surface side,
The electronic device, wherein the positioning component is joined to the base plate so as to grip the projecting portion. A method for manufacturing a keyboard device mounted on a housing, comprising:
a step of forming a protruding portion, a portion of which protrudes downward, on a metal base plate;
A positioning component for positioning the base plate with respect to the housing by setting the base plate having the protrusion formed in a mold and injecting a light-transmitting resin, and a key cap on the upper surface side of the base plate. a plurality of holder parts for attaching a support mechanism for supporting the base plate by insert molding;
a step of attaching a light source module for irradiating the key cap with light through the holder component on the lower surface side of the base plate to which the positioning component and the holder component are joined;
a step of laminating a membrane sheet on the upper surface of the base plate to which the positioning part and the holder part are joined, and vertically overlapping the membrane sheet with the positioning part;
A method of manufacturing a keyboard device, comprising:

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