JP3747824B2 - Keyboard device and support frame of the device - Google Patents

Description

[0001]
[Field of the Invention]
The present invention relates to a keyboard device and a support frame for the device, in which a key is irradiated from below and the key is visually recognized to realize a performance guide and the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a keyboard device in which a key is made of a light transmissive member and a light emitting unit for irradiating the lower surface of a key operation unit is provided to realize a performance guide or the like. In this apparatus, it is desirable that the light emitting unit is disposed as close to the lower surface of the key operation unit as possible from the viewpoint of maximizing the effect of visually recognizing the key by light emission with a small amount of light. For this reason, in some conventional keyboard devices, the light emitting part is provided, for example, in the mouth bar part.
[0003]
[Problems to be solved by the invention]
However, since the mouth bar part is a part that is frequently touched when the apparatus is transported, etc., it is not preferable in terms of durability and the like when the light emitting part is directly attached to the mouth bar part. In addition, it is conceivable that the light emitting part is unitized to be the mouth stick unit itself, but the mouth stick part is a place that can be seen well from the player side, so it must be finished beautifully, making the structure complicated and costly Invite the rise. Furthermore, since the mouth bar portion has a function of reinforcing the frame, it cannot be formed very thin, and the key bar lower limit stopper or the like may protrude from the mouth bar portion. Providing is disadvantageous and is not preferable from the viewpoint of effective use of space.
[0004]
On the other hand, in a keyboard device including a key switch having an elastic bulge, a guide portion is provided in a portion facing each of the front and rear portions of the key in the keyboard support frame, and in the process of mounting the keyboard to the keyboard support frame, A keyboard in which the key is guided by both guide parts so that the key does not come into contact with the elastic bulging part by sliding the key backward on both guide parts, and the key is mounted on the keyboard support frame. An apparatus is known (Japanese Patent Laid-Open No. 10-240260). However, when the light emitting unit is disposed near the lower surface of the key operation unit for the above-described reason, the light emitting unit becomes an obstacle when the key is slid rearward, and there is a concern that smooth key mounting may be hindered.
[0005]
In addition, the light emitting unit is not necessary for all models, and there may be a request to simultaneously produce a device having a performance guide function and a device not having the performance guide function. However, if the keyboard support frame has to be designed separately with or without the light emitting part as a result of providing the light emitting part, the mold becomes separate and the cost increases. On the other hand, when the keyboard support frame is to be shared, the sharing cannot be substantially realized unless the appearance is greatly impaired regardless of whether the light emitting unit is present or not.
[0006]
The present invention has been made to solve the above-described problems of the prior art, and a first object thereof is a keyboard capable of improving the rigidity of the support frame while saving space with a simple configuration and low cost. To provide an apparatus.
[0008]
A second object of the present invention is to provide a support frame for a keyboard device that can share a support frame between models that have and do not have a light emitting unit.
[0009]
[Means for Solving the Problems]
In order to achieve the first object, a keyboard device according to claim 1 of the present invention includes a keyboard (1) including a plurality of keys each having an operation unit capable of transmitting light, and each of the plurality of keys includes a key. A support frame (20) for supporting the plurality of keys so that the operation portion of each key can be swung by a key pressing operation with a base end portion (5) as a fulcrum, and below the free end portion of the key A mouth bar portion (20A) provided on the support frame, a lower limit stopper (11) fixed to the support frame and restricting a key pressing lower limit position, and a plurality corresponding to each key The light emitting part (33), the light collecting part (32) for condensing the light from the light emitting part toward the lower surface of the operation part of each key, and the light emitting part mounting substrate (31), At least one light emitting unit (30) having a length over the width Wherein the light emitting unit is between the lower limit stopper and the mouth bar portion in the longitudinal direction, is disposed over substantially the entire key width, the light emitting unit is configured separately from the said support frame The keyboard device , wherein the light emitting unit mounting board is disposed from above the support frame so as to be positioned below the upper surface of the mouth bar unit .
[0010]
According to this configuration, a plurality of light emitting units corresponding to each key, a light collecting unit that collects light from the light emitting unit toward the lower surface of the operation unit of each key, and a light emitting unit mounting substrate, At least one light emitting unit having a length over approximately one octave width is disposed across the entire key width between the mouth bar portion and the lower limit stopper in the front-rear direction. Thereby, the light emitting unit not only functions as a key irradiation function but also functions as a reinforcement of the support frame together with the mouth bar portion. In addition, since the light emitting unit is disposed between the mouth bar portion and the lower limit stopper in the front-rear direction, a vacant space is effectively used as compared with the case where the light emitting unit is disposed above the mouth bar portion. Therefore, the rigidity of the support frame can be improved with a simple configuration and low cost while saving space.
[0011]
In order to achieve the first object, a keyboard device according to claim 2 of the present invention is a keyboard composed of a plurality of keys each having an operation section capable of transmitting light, and each of the plurality of keys has a base end portion thereof. A support frame for supporting the plurality of keys so that the operation portion of each key can be swung by a key pressing operation, and a key pressing lower limit position of the key. A lower limit stopper (11) that regulates the upper limit, a stopper abutting portion (7b) that is provided so as to hang from each of the plurality of keys, and that can come into contact with the lower limit stopper when the key is pressed, and a lower end of the free end of the key provided on the support frame, a blindfold portion substantially blindfolded at least the lower limit stopper and the stopper-receiving portion from the player side, a plurality of light emitting portions corresponding to the respective keys, the respective keys of the light from the light emitting portion Focus the light toward the lower surface of the operation unit. The light-emitting unit includes at least one light-emitting unit that includes a light-collecting unit and a light-emitting unit mounting substrate, and has a length that extends over approximately one octave width. The light-emitting unit includes the blindfold and the lower limit stopper in the front-rear direction. The light emitting unit is configured to be separated from the support frame, and the light emitting unit mounting substrate is positioned below the top surface of the blindfold. A keyboard device arranged from above with respect to a support frame .
[0012]
According to this configuration, the light emitting unit includes a plurality of light emitting units corresponding to each key, a light collecting unit that collects light from the light emitting unit toward the lower surface of the operation unit of each key, and a light emitting unit mounting substrate. At least one light emitting unit having a length over one octave width is disposed across the entire key width between the blindfold and the lower limit stopper in the front-rear direction. Thus, the light emitting unit not only functions as a key irradiation function but also functions as a reinforcement of the support frame together with the blindfold . In addition, since the light emitting unit is disposed between the blindfolded portion and the lower limit stopper in the front-rear direction, a vacant space is effectively used as compared with the case where the light emitting unit is disposed above the mouth bar portion. Therefore, the rigidity of the support frame can be improved with a simple configuration and low cost while saving space.
[0016]
In order to achieve the second object, the support frame of the keyboard device according to claim 3 of the present invention constitutes a part of the keyboard device, and a plurality of keys are pressed by the operation portion of each key with the base end as a fulcrum. A support frame of a keyboard device that supports the plurality of keys so as to be swingable by a key operation, a mouth bar portion provided below a free end portion of the key; and a rear side of the mouth bar portion; A rear blindfold portion (21) provided below the free end portion (2c) of the key and substantially blindfolding the inside of the keyboard device from the player side, and each key corresponding to each key is irradiated from below. A plurality of light emitting portions, which can be attached from above via a light emitting portion mounting substrate, and the mounting portions are disposed between the mouth bar portion and the rear blindfold in the front-rear direction. is, the attachment portion when said plurality of light emitting portions are mounted on the unit with said mounting, said Wherein the optical unit mounting board is configured to be positioned below the upper surface of the mouth bar portion.
[0017]
According to this configuration, whether or not the light emitting portion is provided in the attachment portion is arbitrary depending on the model. In addition, when the light emitting part is provided, the mounting part is disposed behind the mouth bar part, so that the light emitting part is not noticeable by the mouth bar part, and the appearance is not impaired. On the other hand, even when the light emitting part is not provided, the inside of the keyboard device is substantially concealed from the player side by the rear side blind part, so that the inside of the apparatus is hidden, and the mounting part is also inconspicuous due to the presence of the stick part. Not damaged. Therefore, even if the model does not have a light emitting portion, the support frame can be used as it is without special treatment, and an effect such as cost reduction by sharing the mold can be expected. Therefore, a support frame can be shared between a model with and without a light emitting unit.
[0018]
In addition, in the third aspect , from the viewpoint of further improving the appearance of a model that does not include the light emitting portion, it is desirable that the mounting portion is configured to be able to attach a blindfold plate or the like instead of the light emitting portion.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
FIG. 1 is a partial plan view showing a configuration of a keyboard device according to the present embodiment. In the same figure, the right front part of the present apparatus is shown. FIG. 2 is a cross-sectional view taken along the line AA in FIG.
[0021]
This keyboard device is formed by attaching a key unit 1 (keyboard) to a lower case 20 (support frame) (hereinafter referred to as “key attachment”), and further joining an upper case (not shown) to the lower case 20. FIG. 1 shows a state in which the upper case is removed after the key is attached through the states shown in FIGS. 6 to 8 described later, and the key unit 1 and the lower case 20 are represented by phantom lines. FIG. 6 shows the key unit 1 and the lower case 20 before the key is attached. FIG. 6 is also used to describe the configuration of this apparatus. Hereinafter, the player side of the apparatus is referred to as the front, and the right side of the apparatus viewed from the player is referred to as the right side.
[0022]
In FIG. 6, the key unit 1 has a three-layer structure in which a black key unit 1a, a white key unit 1b divided into two parts, and a white key unit 1c are stacked on each other at their base ends. For example, each octave is configured. The key unit 1 is configured such that a white key 2 and a black key 3 as key bodies to be pressed are supported by a common base end portion 5 via a hinge portion 4 so as to be swingable in the vertical direction.
[0023]
Each of the white key 2 and the black key 3 is composed of a light transmitting member, and transmits light emitted from LEDs 33 (light emitting units) and 24, which will be described later, mainly through the operation units 2c and 3c (free end portions). The player can see the light emission.
[0024]
The operation units 2c and 3c of the white key 2 and the black key 3 may be transparent or translucent as long as they can transmit light. Each of the operation units 2c and 3c includes a transparent resin containing a pigment and / or a light diffusing agent having light diffusibility, and a key switch or the like on the lower surface of the key is invisible. The key irradiating unit may be illuminated by irradiation light from below the key.
[0025]
The white key 2 and the black key 3 are provided with a white key actuator 2a and a black key actuator 3a, respectively. The white key actuator 2 a is formed integrally with the white key 2 and protrudes downward from the ceiling surface of the white key 2 behind the white key guided piece 7. The lower surface of the white key actuator 2 a is formed to be substantially flush with the lower end of the white key 2. The black key actuator 3 a is formed integrally with the black key 3 behind the black key guided piece 8, and its lower surface is formed to be substantially flush with the lower end of the black key 3.
[0026]
White key locking pieces 7a and black key locking pieces 8a extending rearward are formed at the lower ends of the white and black key guided pieces 7 and 8, respectively. Each locking piece 7a, 8a abuts an upper limit stopper member 13, which will be described later, at the upper end portion 7c of the white key locking piece and the upper end portion 8c of the black key locking piece when the key is not pressed.
[0027]
The hinge unit 4 of the key unit 1 employs a so-called wide type as disclosed in Japanese Patent Application Laid-Open Nos. 7-92963 and 10-240260. That is, each hinge part 4 of the keys 2 and 3 is wider than the key width at the rear end of each key 2 and 3, and a part thereof overlaps with the hinge part of the adjacent key. As a result, even if there is no key guide at the time of pressing and releasing keys, it is possible to press keys without causing side shake or twist. Therefore, this keyboard apparatus is not provided with a key guide.
[0028]
A recess 3d (see FIG. 6) is formed in the lower part of the key body of the black key 3 from the rear end of the black key 3 to the rear end of the black key actuator 3a. Further, although not shown, the operation part 2c of the white key 2 has a U-shaped cross section parallel to the key arrangement direction, and has a width that allows a light collecting part 32 described later to be loosely fitted.
[0029]
An elastic piece 6 is provided at the rear end of the common base end portion 5. The elastic piece 6 is formed integrally with the black key 3 and protrudes backward from the rear end of the common base end portion 5 and then bends downward. At the lower end of the elastic piece 6, a claw 6 a protruding rearward is formed integrally with the elastic piece 6. The common base end portion 5 is further provided with a screw hole 19 for attachment to the lower case 20 of the key unit 1 (see FIG. 1).
[0030]
The lower case 20 is made of synthetic resin, and the front end portion is a mouth bar portion 20A as shown in FIG. The mouth bar portion 20A is formed integrally with the lower case 20 over the entire key width in the key arrangement direction. Further, on the upper surface 20Aa (first guide portion) of the mouth bar portion 20A, as will be described later with reference to FIG. The key unit 1 (particularly the front half) is slidably supported via the white key front end lower part 2b.
[0031]
A blindfold plate 21 protrudes from the lower case front portion 20B of the lower case 20. The blindfold plate 21 is formed integrally with the lower case 20 over substantially the entire key width in the key arrangement direction and at substantially the same height as the mouth bar portion 20A. Therefore, the blindfold 21 serves to reinforce the rigidity of the lower case 20. Further, the blindfold plate 21 blinds the inside of the device behind the keyboard (below the keyboard) from the player side. For example, a key press stopper 11 (lower limit stopper), which will be described later, and a white key lower end 7b (stopper contact portion) and a black key lower end 8b (stopper contact portion) of the keys 2 and 3 that contact the key unit 1 when the key is pressed are also hidden. It is hidden behind the plate 21 and cannot be seen.
[0032]
An attachment boss 22 (attachment portion) is provided between the mouth bar portion 20 </ b> A and the blindfold plate 21, and the light emitting unit 30 is attached to the attachment boss 22. Details of the mounting boss 22 and the light emitting unit 30 will be described later.
[0033]
A key press stopper 11 is provided behind the blind plate 21 in the lower case front portion 20B of the lower case 20. The key pressing stopper 11 is fixed on the lower case front portion 20B over the entire key width in the key arrangement direction, and the white key lower end 7b and the black key lower end of the white and black key guided pieces 7 and 8 when the key is pressed. It abuts on 8b and serves as a lower limit stopper.
[0034]
A board mounting boss 17 (17A, 17B) projects from the lower case central portion 20C of the lower case 20, and the switch board 12 is fixed to the board mounting boss 17 with screws 15. On the switch board 12, key switches 14 (key pressing operation detecting means) are provided corresponding to the respective keys (see FIGS. 1, 2, and 6).
[0035]
The key switch 14 is disposed on the switch board 12 at a position facing the white key actuator 2a and the black key actuator 3a via a rubber sheet (not shown) after the key is attached. At the upper end of the key switch 14, an elastic bulge 14a made of elastic rubber or the like is provided. The elastic bulging portion 14a is in light contact with the actuators 2a and 3a when the key is not pressed, and is deformed by the pressing force from the actuators 2a and 3a when the key is pressed. The key switch 14 detects a key pressing operation by contact of a movable contact and a fixed contact (not shown), but may use a light sensor such as a photo reflector.
[0036]
As shown in FIGS. 1, 2, 6, and the like, a guide rib 16 (second guide portion) is provided so as to protrude from the lower case rear portion 20 </ b> D of the lower case central portion 20 </ b> C. The guide rib 16 is formed integrally with the lower case 20 in front of the lower case rear portion 20D. The guide rib 16 is in contact with the front contact portion 23 of the hinge portion 4 of the key unit 1 from the start to the end of the key mounting operation, and can be accommodated in the recess 3d of the black key 3 after the key mounting is completed. Placed in position.
[0037]
Two guide ribs 16 are provided for one key unit (for one octave). The height of the guide rib 16 is set in a range that does not interfere with the ceiling surface of the recess 3d of the black key 3 when the key is pressed. The guide rib 16 has its upper end in contact with the contact portion 23 when the key unit 1 for sliding the key is slid backward, and the key unit 1 (particularly the latter half) is slidable through the contact portion 23. To support.
[0038]
As will be described later, the guide rib 16 supports the key unit 1 in cooperation with the above-described upper surface 20Aa of the mouth bar portion 20A, and elastically bulges with the white and black key actuators 2a and 3a until just before the end of the key mounting. While avoiding contact with the portion 14a, the key unit 1 is appropriately guided to the key mounting position. Further, in the key mounting process, each light condensing part 32 of the light emitting unit 30 is disposed at a position so as not to interfere with the white key 2 by being fitted in the U-shaped portion of the corresponding white key 2 with a margin. Does not interfere with operation.
[0039]
The lower case rear portion 20D is provided with a front rail portion 20f and a rear rail portion 20g. Each of the front rail portion 20f and the rear rail portion 20g is formed in a protruding shape integrally with the lower case 20, and is provided over the entire key width in the key arrangement direction on the lower case rear portion 20D. At the end of key attachment, the common base end 5 is sandwiched and fitted between the front rail portion 20f and the rear rail portion 20g. At the same time, the elastic piece 6 is inserted into a claw hole (not shown) provided on the lower case rear portion 20D side, and the claw 6a is locked to the claw hole.
[0040]
As a result, the key unit 1 is fixedly disposed on the upper surface of the lower case rear portion 20D via the common base end portion 5, and the key unit 1 is movable in the key arrangement direction as the base end portion 5 moves. Become. By screwing the common base end portion 5 to the lower case rear portion 20D through the hole 19 after the key is attached, the movement of the key unit 1 in the key arrangement direction is restricted.
[0041]
FIG. 3 is a partial front view of the keyboard device. However, the lower case 20 is represented by a section cut just in front of the mounting boss 22. In the same figure, the right front part corresponding to FIG. 1 of this apparatus is represented. FIG. 4 is a partial plan view (FIG. 4A) and a partial front view (FIG. 4B) of the light emitting unit 30. FIG.
[0042]
This keyboard device has a sound range of approximately 5 octaves, and a plurality (for example, 9) of mounting bosses 22 are equally arranged in the key arrangement direction.
[0043]
As shown in FIG. 4, the light emitting unit 30 includes an attachment board 31 (light emission part attachment board), an LED 33, a connector 34, and a light collecting part unit 37. The light emitting unit 30 is divided into two parts for the low sound side and the high sound side, and the two light emitting units 30 have substantially the entire key width. Both light emitting units 30 are basically configured similarly in a substantially symmetrical manner. FIG. 4 shows the light emitting unit 30 on the right side.
[0044]
The connector 34 is attached to the right mounting board 31 and electrically connects the switch board 12 and the light emitting unit 30 via the flat cable 25 (see FIG. 1). The light collecting unit 37 is made of synthetic resin, and a plurality of holes 36 are provided at positions corresponding to the mounting bosses 22. In addition, a plurality of positioning projections 35 that define the positional relationship with the mounting substrate 31 are provided on the lower surface of the light collecting unit 37. The mounting board 31 is provided with a hole (not shown) at a position corresponding to the positioning protrusion 35. The LED 33 is mounted on the mounting substrate 31 corresponding to each white key 2.
[0045]
On the other hand, the light collecting unit 37 is provided with a light collecting unit 32 corresponding to each white key 2. The condensing part 32 is formed integrally with the condensing part unit 37 so as to surround the LED 33. The condensing unit 37 has a base portion that is formed in a cross-sectional shape over its entire length, and has improved rigidity.
[0046]
When attaching the light emitting unit 30 to the lower case 20, first, the positioning projection 35 of the light collecting unit 37 is inserted through the corresponding hole (not shown) of the mounting substrate 31, An assembly of the mounting substrate 31 is obtained. Then, the condensing unit 37 and the mounting substrate 31 are fastened together by screwing them onto the mounting boss 22 with screws 40 through the holes 36. Thereby, the light emitting unit 30 is attached to the attachment boss 22. In order to irradiate the white key 2 efficiently, the LED 33 is set to be located at the same height or higher with respect to the upper end of the blindfold plate 21 after the light emitting unit 30 is attached (see FIGS. 2 and 6). .
[0047]
The light emitting unit 30 is disposed between the blindfold plate 21 and the mouth stick portion 20A in the vicinity of the mouth stick portion 20A, and the light emitting unit 30 is provided over substantially the entire key width. Combined with the rigidity maintaining function, the rigidity of the lower case 20 is improved.
[0048]
FIG. 5 is a side view of the light collecting section 32 and the vicinity thereof as seen from the right side. FIG. 5A shows a light collecting unit 32 for a white key (hereinafter referred to as “intermediate key”) excluding the lowest sound key and the highest sound key, and FIG. 5B shows a light collecting unit 32 for the highest sound key. Respectively.
[0049]
As shown to Fig.4 (a), the condensing part 32 is comprised by the rectangular wall surrounding LED33 seeing from upper direction. As shown in FIG. 5A, the intermediate key condensing part 32 is cut out so that the upper end part thereof is inclined downward as it goes rearward, and an inclined part 32a is formed. As shown in FIG. 2, the front wall 32F of the light collecting unit 32 is relatively close to the lower part of the operation unit 2c of the white key 2, and the front end position of the irradiation range of the white key 2 by the light emitted from the LED 33 is The position is restricted to the position P in the operation unit 2c. Thereby, the boundary between the irradiated part and the non-irradiated part in the key operation unit 2c becomes clear at the position P, and the white key 2 corresponding to light emission is clearly visually recognized. Further, as viewed from the player, the LED 33 is hidden by the front wall 32F, and the appearance of the player is prevented from deteriorating.
[0050]
Further, as a result of the upper end portion being inclined and cut away, the rear wall 32B of the light collecting portion 32 has a low height, and even if viewed from the Y direction in FIG. It is hidden from view. Thereby, since the inside of the condensing part 32 is hidden, there is no annoying feeling at all. In particular, as described above, this apparatus does not have a key guide, but since most products have a key guide, the front wall 32F of each light collecting portion 32 may be displayed in accordance with each white key 2 depending on the appearance. Since it is recognized as if it is a key guide for each, there is no sense of incongruity and it does not adversely affect the design.
[0051]
On the other hand, as shown in FIG. 5 (b), the highest sound key condensing part 32 is cut out leaving only the right wall 32R when the upper end part is cut out. Accordingly, the upper part of the wall excluding the right wall 32R constitutes the inclined portion 32a, but only the right wall 32R remains as it is. The front wall 32F and the rear wall 32B have the same configuration as that of the condensing unit 32 for the intermediate key. The right wall 32R prevents the LED 33 from being seen when viewed from the right side of the apparatus, and prevents the appearance from the right side of the apparatus from being deteriorated.
[0052]
The lowest sound key condensing unit 32 is configured symmetrically with the highest sound key condensing unit 32 (FIG. 4A). That is, when the upper end portion is cut out, only the left wall 32L is left behind, and the left wall 32L prevents the LED 33 from being seen when viewed from the left side of the device. Deterioration of appearance from the left direction is prevented.
[0053]
Note that the LEDs 33 and 24 emit light according to various modes. For example, in a mode in which light is emitted in response to a key pressing operation, it is easy to visually recognize a key that has been pressed, and in the music data, In the performance guide mode based on, light is emitted as the music progresses, and keys to be operated are sequentially recognized.
[0054]
By the way, although the present embodiment has been described on the assumption of a model having a key light emission function, the light emitting unit 30 including the LED 33 and the like is naturally not necessary for a model having no key light emission function. Therefore, for models that do not have a key light emission function, the lower case 20 can be shared if the light emitting unit 30 is not attached to the attachment boss 22.
[0055]
That is, when the light emitting unit 30 is attached, since the mounting boss 22 is arranged behind the mouth bar portion 20A, the light collecting unit 32 is not conspicuous by the mouth bar portion 20A, and the appearance is not impaired. On the other hand, even when the light emitting unit 30 is not attached, the inside of the keyboard device is substantially hidden from the player side by the blindfolding plate 21 and the inside of the device is hidden, and the mounting boss 22 is not conspicuous due to the mouth rod portion 20A. Is not impaired. Therefore, even in a model not provided with the light emitting unit 30, the lower case 20 can be used as it is without special treatment, and an effect such as cost reduction by sharing the mold can be expected.
[0056]
For models that do not include the light emitting unit 30, the lower case 20 is configured such that a blindfold plate or a blindfold plug (not shown) can be attached to the mounting boss 22 by screws instead of the light emitting unit 30. By attaching a blindfold plate or the like, the mounting boss 22 is hidden, the appearance is further improved, and foreign matter mixing into the mounting boss 22 can be prevented. In addition, for example, if the blindfold is formed over the entire key width, it contributes to increasing the rigidity of the front portion of the lower case 20.
[0057]
Next, a key mounting operation in the keyboard apparatus will be described with reference to FIGS. 2 and 6 to 8.
[0058]
6 to 8 are longitudinal sectional views showing the procedure of the key mounting operation of the keyboard device according to the present embodiment.
[0059]
First, as shown in FIG. 6, the operator holds the key unit 1 from above the lower case 20 so that the guided pieces 7 and 8 are inserted between the front end portion of the switch board 12 and the blindfold plate 21. Go down. Then, as shown in FIG. 7, the key unit 1 is placed on the lower case 20. At this time, the white key front end lower portion 2b of the white key 2 contacts the upper surface 20Aa of the mouth bar portion 20A, and the contact portion 23 of the hinge portion 4 of the key unit 1 contacts the upper surface of the guide rib 16. Further, as described above, since the operation part 2c of the white key 2 has a U-shaped cross section, each condensing part 32 is loosely fitted to the corresponding operation part 2c of the white key 2, and interference is avoided. Yes.
[0060]
Next, when the key unit 1 is pushed backward, as shown in FIG. 8, the white key front end lower part 2 b slides on the upper surface 20 Aa of the mouth bar part 20 A, and the contact part 23 of the hinge part 4 becomes the guide rib 16. Slide the top surface. Until this time, the white key actuator 2a and the black key actuator 3a do not contact the elastic bulging portion 14a of the key switch 14.
[0061]
When the key unit 1 is further moved rearward and the contact portion 23 passes the rear end of the upper surface of the guide rib 16, the front half of the key unit 1 is lowered by the weight of the key unit 1. Accordingly, the key actuators 2a and 3a abut against the elastic bulging portion 14a. After that, the key unit 1 rotates backward (clockwise in FIG. 8) from the collapse of the balance due to its own weight, with the elastic bulging portion 14a as a fulcrum. When the key unit 1 rotates, the white key front end lower portion 2b is separated from the upper surface 20Aa of the mouth bar portion 20A, and the common base end portion 5 is close to the lower case rear portion 20D. When pressed from above, the common base end portion 5 is sandwiched and fitted between the front rail portion 20f and the rear rail portion 20g as shown in FIG. At this time, the guide rib 16 is accommodated in the recess 3 d of the black key 3, and the guided pieces 7 and 8 abut against the upper limit stopper member 13. Further, along with this, the elastic piece 6 is inserted into the claw hole (not shown) on the lower case rear portion 20D side, and the claw 6a is locked to the claw hole.
[0062]
By such an operation, each of the key actuators 2a and 3a comes into contact with the elastic bulging portion 14a from almost above. Next, the key unit 1 is slid in the key arrangement direction along the front rail portion 20f and the rear rail portion 20g, and the position in the key arrangement direction is appropriately determined, and then the common base is connected through the hole 19 (see FIG. 1). By attaching the end portion 5 to the lower case rear portion 20D, mounting of the key unit 1 to the lower case 20 is completed.
[0063]
According to the present embodiment, since the light emitting unit 30 is disposed over substantially the entire key width in the vicinity of the mouth bar portion 20A, the light emitting unit 30 has not only the key irradiation function but also the lower side with the mouth bar portion 20A. It also serves as a reinforcement for the case 20. In addition, since the light emitting unit 30 is disposed between the key-pressing stopper 11 and the mouth bar portion 20A in the front-rear direction, particularly between the blindfold plate 21 and the mouth bar portion 20A, the light emitting unit 30 is disposed on the upper surface 20Aa of the mouth bar portion 20A. Compared with the case where it arrange | positions etc., the vacant space is utilized effectively. Therefore, the rigidity of the lower case can be improved while saving space with a simple configuration and low cost.
[0064]
Further, when the key unit 1 is slid rearward and attached to the lower case 20, the upper surface 20Aa of the mouth bar portion 20A and the guide rib 16 prevent the key unit 1 from contacting the elastic bulging portion 14a of the key switch 14. When the key unit 1 is guided to each other, the respective light collecting portions 32 of the light emitting unit 30 are arranged at positions that do not interfere with the key unit 1, and in particular, the operation of the white key 2 to which each light collecting portion 32 corresponds. Since the interference is avoided by loosely fitting the portion 2c, the light collecting portion 32 to the LED 33 do not obstruct the key attachment, and the key unit 1 can be smoothly attached by the slide.
[0065]
Further, not only when the light emitting unit 30 is provided in the lower case 20, but also when the light emitting unit 30 is not provided, the appearance is ensured without any special treatment. Can be shared. Therefore, effects such as cost reduction by sharing the mold can be obtained.
[0066]
Further, according to the present embodiment, the front wall 32F of the light collector 32 restricts the front end position of the irradiation range of the white key 2 by the irradiation light from the LED 33 to the position P, and the LED 33 is hidden from the viewpoint of the player. Since it did in this way, with the small light quantity, while improving the visibility of the key by light emission, LED33 can be made not conspicuous and the deterioration of the external appearance from the front of an apparatus can be prevented. Furthermore, since the rear wall 32B of the light collecting portion 32 is hidden behind the front wall 32F and cannot be seen, the appearance from the front can be further improved. Further, the left wall 32L of the lowest sound key condensing unit 32 and the right wall 32R of the highest sound key condensing unit 32 make the LED 33 appear to be hidden when viewed from the left or right side of the apparatus. Since it was made not to be, the deterioration of the appearance from the left-right direction of the apparatus can also be prevented.
[0067]
In addition, since the shape of the upper end portion of the light collecting portion 32, such as the height of each wall of the light collecting portion 32, is formed by notches, the manufacturing is easy. In particular, in each of the condensing portions 32 for the lowest sound key and the highest sound key, the left wall 32L and the right wall 32R are left so as to form a notch, thereby simultaneously with the other front wall 32F, rear wall 32B, and the like. Since it can be formed, it can be manufactured easily. In addition, you may comprise each wall of the circumference | surroundings of the condensing part 32 by protrudingly providing independently etc. irrespective of notch formation.
[0068]
Moreover, since the mounting substrate 31 and the light collecting unit 37 are assembled and mounted on the mounting boss 22, the configuration and mounting work can be simplified and the cost can be reduced.
[0069]
In the present embodiment, the light emitting unit 30 is divided into two parts. However, from the viewpoint of improving the rigidity of the lower case 20b, one light emitting unit 30 has a length that extends over at least about one octave width. The configuration is not limited to the illustrated configuration. In addition, although it does not become a rigidity improvement, you may comprise each condensing part 32 and LED33 separately for every key.
[0070]
【The invention's effect】
As described above, according to the first and second aspects of the present invention, the rigidity of the support frame can be improved while saving space with a simple configuration and low cost.
[0072]
According to the third aspect of the present invention, the support frame can be shared between the models provided with the light emitting unit and the models not provided with the light emitting unit.
[Brief description of the drawings]
FIG. 1 is a partial plan view showing a configuration of a keyboard device according to the present embodiment.
FIG. 2 is a cross-sectional view taken along the line AA in FIG.
FIG. 3 is a partial front view of the apparatus.
FIG. 4 is a partial plan view (FIG. 4A) and a partial front view (FIG. 4B) of a light emitting unit.
FIG. 5 is a side view of the light condensing unit and its vicinity as viewed from the right side.
FIG. 6 is a longitudinal sectional view showing a procedure of a key attaching operation of the apparatus.
FIG. 7 is a longitudinal sectional view showing a procedure of a key attaching operation of the apparatus.
FIG. 8 is a longitudinal sectional view showing a procedure of a key attaching operation of the apparatus.
[Explanation of symbols]
1 key unit (keyboard), 2 white key, 3 black key, 2a, 3a actuator, 2c, 3c operation part (free end part), 5 common base end part, 7b white key lower end (stopper contact part), 11 push Key stopper (lower limit stopper), 14 Key switch (key pressing operation detecting means), 14a Elastic bulge part, 16 Guide rib (second guide part), 20 Lower case (support frame), 20A Opening bar part, 20Aa Upper surface ( (First guide part), 21 blindfold plate, 22 mounting boss (mounting part), 23 contact part, 30 light emitting unit, 31 mounting board (light emitting part mounting board), 32 light collecting part, 32F front wall, 32L left Side wall, 32R right side wall, 33 LED (light emitting part), 37 Condensing part unit

Claims (3)

A keyboard composed of a plurality of keys each having an operation part capable of transmitting light;
A support frame that supports the plurality of keys so that the operation portion of each key can be swung by a key pressing operation with the base ends of the plurality of keys as fulcrums;
A mouth bar provided on the support frame below the free end of the key;
A lower limit stopper provided fixedly with respect to the support frame and restricting a key pressing lower limit position of the key;
A plurality of light emitting units corresponding to each key, a light collecting unit for condensing light from the light emitting unit toward the lower surface of the operation unit of each key, and a light emitting unit mounting substrate, and having a width of approximately one octave or more And at least one light emitting unit having a length of
The light emitting unit is disposed across the entire key width between the mouth bar portion and the lower limit stopper in the front-rear direction ,
The light emitting unit is configured separately from the support frame, and is disposed from above the support frame so that the light emitting unit mounting substrate is positioned below the upper surface of the mouth bar portion. Characteristic keyboard device. A keyboard composed of a plurality of keys each having an operation part capable of transmitting light;
A support frame that supports the plurality of keys so that the operation portion of each key can be swung by a key pressing operation with the base ends of the plurality of keys as fulcrums;
A lower limit stopper provided fixedly with respect to the support frame and restricting a key pressing lower limit position of the key;
A stopper abutting portion that is suspended from each of the plurality of keys and can abut against the lower limit stopper when the key is depressed;
A blindfold that is provided on the support frame below the free end of the key, and that substantially blinds at least the lower limit stopper and the stopper contact portion from the player side,
A plurality of light emitting units corresponding to each key, a light collecting unit for condensing light from the light emitting unit toward the lower surface of the operation unit of each key, and a light emitting unit mounting substrate, and having a width of approximately one octave or more And at least one light emitting unit having a length of
The light emitting unit is disposed across the entire key width between the blindfold in the front-rear direction and the lower limit stopper ,
The light emitting unit is configured separately from the support frame, and is disposed from above the support frame so that the light emitting unit mounting substrate is positioned below the upper surface of the blindfold. A keyboard device. A support frame of a keyboard device that constitutes a part of the keyboard device and supports the plurality of keys so that a plurality of keys can be swung by a key pressing operation with a base end portion as a fulcrum. ,
A mouth bar provided below the free end of the key;
Provided below the free end of and the key behind than the mouth bar portion, and the side blindfold After approximately blindfold the interior of the keyboard apparatus from the player side,
A plurality of light emitting portions that correspond to the keys and irradiate the keys from below are provided with attachment portions that can be attached from above via the light emitting portion attachment substrate ,
The mounting portion is disposed between the mouth bar portion and the rear blindfold in the front-rear direction ,
The keyboard is characterized in that the mounting portion is configured such that when the plurality of light emitting portions are attached to the mounting portion, the light emitting portion mounting substrate is positioned below the upper surface of the mouth bar portion. Support frame.

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