JP4640700B2 - Keyboard device - Google Patents

Description

  The present invention relates to a keyboard device in which a mouth bar portion is disposed in front of a keyboard.

  Conventionally, as shown in Patent Document 1 below, the mouth bar portion of the keyboard device is attached to, for example, left and right arms and shelves. The mouth bar portion has almost the entire keyboard width and is required to secure a small and constant gap with the front end of the key over the entire length, so that high rigidity is required. Therefore, in the following Patent Document 1, the mouth bar portion is made of a metal plate to ensure its rigidity.

On the other hand, a keyboard device such as an electronic keyboard instrument has a lower case and / or an upper case made of resin, separately from a keyboard frame that is an interior part, and the mouth bar portion also has a lower case or an upper case (or Some cases are formed integrally with an upper and lower case. The mouth stick part is formed, for example, rising from the front part of the bottom plate part of the lower case, and is disposed close to the tip of the key. The keyboard frame is fixed to the front part of the bottom plate part of the lower case, for example.
Japanese Utility Model Publication No. 4-47750

  However, in the keyboard device in which the mouth stick portion is made of resin or the like as described above, when the mouth stick portion is formed to rise from the bottom plate portion of the lower case, the mouth stick portion is a substantial support portion. It becomes the form extended from the front part of the baseplate part of the lower case which is. In this case, the distance from the support position of the mouth bar part (the front part of the bottom plate part) to the upper end of the mouth bar part is long. Therefore, there is a problem that the position of the upper end of the mouth bar portion mainly varies in the front-rear direction, and it is not easy to ensure high accuracy.

  Moreover, since the case made of resin is not originally high in rigidity, the distance from the support position of the mouth stick part to the upper end of the mouth stick part is long, so that the rigidity of the mouth stick part itself is lowered, and the mouth stick part is There is a problem that it is easy to bend and it is not easy to maintain the gap with the key tip uniformly over the entire length of the mouth bar. For example, contrary to the design, there is an inconvenience that in the center of the key range, the distance between the keyboard and the mouth bar portion is too wide, and foreign matter falls into the space and cannot be easily removed.

  On the other hand, it is conceivable to increase the rigidity by substantially increasing the thickness, for example, by providing a rib on the mouth bar portion. However, since parts such as a white key key operation guide and a key press stopper are disposed in the vicinity of the mouth bar portion, there are many space restrictions.

  The present invention has been made in order to solve the above-mentioned problems of the prior art, and its purpose is to increase the position of the mouth bar part mounting portion and to increase the accuracy and rigidity of the mouth bar part without increasing the thickness. It is to provide a keyboard device that can be enhanced.

In order to achieve the above object, a keyboard apparatus according to claim 1 of the present invention includes a lower case having a mounting portion, a support member (10) disposed on the lower case, and the support member. A keyboard (KB) composed of a plurality of keys swingably supported by the support member; a mouth bar portion (63) disposed in front of the keyboard having a mounted portion; and the support member. A support part (91) for attaching the mouth stick part to the support member, the support member rising from a lowermost position (92) of the front part; (96), the mouth stick part attaching part is provided at a position higher than the lowest position in the rising part, and the mouth stick part attaching part of the support member and the attaching part of the lower case In between, the attached portion of the mouth stick portion is the Characterized in that it is fixed in a fastened state with respect to the rod portion mounting portion and the mounting portion.
In order to achieve the above object, a keyboard apparatus according to claim 2 of the present invention includes a support member, a keyboard comprising a plurality of keys disposed on the support member and swingable on the support member, and the keyboard. A mouth bar portion disposed in front of the support bar, and a mouth bar portion mounting portion provided on the support member for attaching the mouth bar portion to the support member. It has a rising part that forms an inclined surface from the lowest position and rises obliquely forward and upward, and the mouth bar part mounting part is provided at a position higher than the lowest position in the rising part, A region where the support member does not exist is formed in a region from below to below the inclined surface .

  In addition, the code | symbol in the said parenthesis is an illustration.

According to claim 1 of the present invention, the accuracy and rigidity of the mouth bar portion can be increased without increasing the position of the mouth bar portion attaching portion and increasing the thickness.
According to claim 2 of the present invention, the accuracy and rigidity of the mouth bar portion can be increased without increasing the position of the mouth bar portion attaching portion and increasing the thickness. Further, the rigidity of the mouth bar portion attaching portion can be increased by securing the rigidity by the inclined rising portion.

According to the third and fourth aspects, since the mouth stick portion attaching portion serves both as a function of attaching the mouth stick portion and a function of providing the key operation guide portion, the configuration is simple and the space is saved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a longitudinal sectional view of a keyboard apparatus according to an embodiment of the present invention. The keyboard device 1 is configured as an electronic keyboard instrument. Hereinafter, the player side (the left side of the figure) of the keyboard device 1 is referred to as the front.

  As shown in FIG. 1, in the keyboard device 1, a resin key frame 10 is disposed in a housing constituted by a resin upper case 60 and a lower case 70. The key frame 10 is provided with a keyboard KB composed of a plurality of white keys 20 and a plurality of black keys 40. The common base end portion 30 of the keyboard KB is fixedly held by the key frame 10, and the free ends of the white key 20 and the black key 40 are rotatable (or swingable) in the vertical direction.

  The key frame 10 is provided with mass bodies 50 (50W, 50B) corresponding to the white key 20 and the black key 40, respectively. The mass bodies 50W and 50B are supported so as to be pivotable in the vertical direction about a pivot shaft 14 provided on a mass body support rib 13 formed on the key frame 10. The mass body 50 is driven by a corresponding key and rotates in conjunction with the key. Then, by rotating, an appropriate inertial force is applied to the corresponding key to realize a touch feeling like an acoustic piano.

  In the rear portion 10b of the key frame 10, an upper limit stopper 83 is provided on the upper side and a lower limit stopper 84 is provided on the lower side. When the rear end portion of the mass body 50 abuts against the lower limit stopper 84, the mass body 50 and the non-key-pressing position (initial position) of the corresponding key are regulated. On the other hand, when the rear end portion of the mass body 50 abuts on the upper limit stopper 83, the key body pressing end position (rotation end position) of the mass body 50 and the corresponding key is regulated.

  Further, on the board 80 provided on the key frame 10, a key pressing switch 81 is provided corresponding to each of the white key 20 and the black key 40, and these key pressing switches 81 perform the pressing operation of the corresponding key. Is detected. A musical sound is generated by a musical sound generator (not shown) based on the detection result by the key pressing switch 81.

  FIG. 2 is an enlarged cross-sectional view of the front portion of the keyboard device 1. 3A is a cross-sectional view of the front portion of the key frame 10, FIG. 3B is a cross-sectional view of the front portion of the upper case 60, and FIG. 3C is a cross-sectional view of the front portion of the lower case 70. . 4A is a partial plan view of the front portion of the lower case 70, FIG. 4B is a partial plan view of the front portion of the key frame 10, and FIG. 4C is a front view of the key frame 10. It is a partial front view. 5A is a cross-sectional view of the front end portion of the white key 20, and FIG. 5B is a back view of the front end portion of the white key 20. FIG.

  As shown in FIG. 1, the 1st-4th attaching parts 91-94 are provided in the lower part from the front part 10a of the key frame 10 to the rear part 10b. The key frame 10 is coupled to the lower case 70 by a plurality of screws 72, 73, and 74 at the second, third, and fourth attachment portions 92, 93, and 94, respectively. The key frame 10 is also coupled to the lower case 70 and the upper case 60 by a plurality of screws 71 in a first mounting portion 91 that is a boss provided at the front (described later). Further, the lower case 70 and the upper case 60 are coupled with a plurality of screws (not shown) at appropriate positions in the respective rear portions. A recess 18 for accommodating a battery or the like is formed in the lower portion of the lower case 70.

  As shown in FIGS. 2, 3 (c), and 4 (a), the front portion of the lower case 70 is located at a position corresponding to the first mounting portion 91, and is a horizontal upper portion that is raised in a convex cross section. A flat floor portion 75 is formed, and a seat portion 76 is connected to the upper portion of the floor portion 75. A plurality of seats 76 are provided in the key arrangement direction (left-right direction) at an appropriate interval. Further, corresponding to the position of the seat portion 76, a fastening hole 77 that penetrates the seat portion 76 and the floor covering portion 75 is formed in the vertical direction.

  As shown in FIGS. 1, 2, and 3 (b), the foremost portion of the upper case 60 is formed with a mouth bar portion 63 that rises upward in a convex cross section. The mouth bar portion 63 is formed integrally with the upper case 60 over the entire keyboard width, is located immediately before the front end portion 20a of the white key 20, and is close to the front end portion 20a. As shown in FIGS. 2 and 3 (b), the front portion of the upper case 60 is connected to the lower end of the rear portion 63a of the mouth bar portion 63 at a position corresponding to the first mounting portion 91 and is horizontal. A floor covering 61 is formed, and a seat 62 is connected to the top of the floor covering 61. The seat portion 62 is formed at a position corresponding to the seat portion 76 of the lower case 70, and a fastening hole 64 communicating with the fastening hole 77 is formed in each seat portion 62 and the floor covering portion 61 in the vertical direction. (See FIG. 3B).

  As shown in FIGS. 2, 3 (a), 4 (b), and (c), a hanging rib 99 is extended downward from the base 98 in the front portion 10 a of the key frame 10. The base 98 and the hanging rib 99 are integrally formed over the keyboard width. A plurality of the first attachment portions 91 of the key frame 10 extend downward from the lower surface of the base portion 98 immediately before the hanging rib 99 (see FIG. 4C). The first attachment portion 91 is provided corresponding to the seat portion 62 of the upper case 60 and the seat portion 76 of the lower case 70, and the first attachment portion 91 has a screw hole 97 corresponding to the fastening holes 64 and 77. Is provided. As shown in FIGS. 2, 3A, and 4B, the second mounting portion 92 of the key frame 10 is a horizontal bottom plate portion and is provided at the lowest position in the front portion 10a. .

  As shown in FIGS. 2, 3 (a), 4, and 4 (c), a plurality of inclined ribs 96 are formed integrally with the key frame 10 from the front end of the second mounting portion 92 to the lower end of the hanging rib 99. Yes. The inclined rib 96 is formed at a position close to the first mounting portion 91 in the key arranging direction, and the rigidity of the first mounting portion 91 is increased. The front surface of the inclined rib 96 is an inclined surface 96a facing forward and downward. Therefore, the inclined rib 96 forms an inclined surface 96a from the second mounting portion 92 which is the lowest position and rises obliquely forward, and the first mounting portion 91 is located in the vicinity of the raised uppermost portion. That is, the first attachment portion 91 is disposed so as to float above the second attachment portion 92.

  As shown in FIGS. 3, 4 (b) and 4 (c), ribs 11 connected to the upper portion of the base 98 of the key frame 10 and parallel to the key arrangement direction are formed at positions corresponding to the white keys 20. Has been. Further, a key guide portion 12 that is connected to the upper portion of the base portion 98 and the front surface of the rib 11 and that guides the key pressing operation is integrally formed to extend in the vertical direction. On the other hand, as shown in FIGS. 5A and 5B, a keyed guide portion 33 that engages with the key guide portion 12 is formed to extend in the vertical direction at the front end portion 20 a of the white key 20. Due to the engagement, the front end 20a of the white key 20 is restricted from moving in the left-right direction, and is appropriately operated in the up-down direction.

  The keyboard device 1 is assembled as follows. First, all the mass bodies 50 and the keyboard KB are arranged on the key frame 10, and the key frame 10 is attached to the upper case 60 to the lower case 70 with screws 71 on the first to fourth mounting portions 91 to 94. Threaded and fastened at ~ 74. In particular, as shown in FIGS. 2 and 3A to 3C, the first mounting portion 91 abuts the corresponding floor covering portion 61 of the upper case 60 on the seat portion 76 of the lower case 70. Further, the corresponding first mounting portion 91 of the key frame 10 is brought into contact with each seat portion 62 of the upper case 60. Then, by screwing the screw 71 into the screw hole 97 from below through the fastening holes 77 and 64, the key frame 10, the upper case 60, and the lower case 70 are fastened together in their front portions. Is done.

  By the way, as shown in FIG. 2, an empty space 95 is generated in a region from the lower side of the first mounting portion 91 to the lower side of the inclined surface 96a. This empty space 95 can be used as an arrangement space for arranging various functional parts for realizing a function as a keyboard instrument. Examples of the various functional components include various substrates (interface substrate, after sensor substrate, proximity sensor substrate, headphone substrate, offset adjustment volume substrate, etc.), various sensors, actuators, and the like.

  According to the present embodiment, the first mounting portion 91 that is the position for supporting the mouth bar portion 63 in the key frame 10 is forward from the second mounting portion 92 that is the lowest position of the front portion 10 a of the key frame 10. It is in a position that rises and floats higher than the second mounting portion 92 (see FIGS. 2 and 3A). As a result, as in many conventional keyboard devices, the lip bar portion is formed from the first mounting portion 91, which is the support position of the lip portion 63, as compared to a structure in which the lip portion is formed by rising from the bottom plate portion of the lower case. The distance to the upper end of the part 63 is shortened. Accordingly, sufficient rigidity can be ensured without increasing the thickness substantially by providing ribs or the like in the mouth bar portion 63, and the upper end of the mouth bar portion 63 is mainly in the front-rear direction. The position of is difficult to vary. Therefore, since the amount of bending can be reduced while the mouth bar portion 63 is made of resin, it is easy to maintain the gap with the tip of the white key 20 uniformly over the entire length of the mouth bar portion 63 with high accuracy. Become. Therefore, the accuracy and rigidity of the mouth bar 63 can be increased without increasing the wall thickness.

  In addition, the key guide portion 12 is provided on the upper portion of the base portion 98 and extends upward from a position higher than the first mounting portion 91, so that the key guide portion 12 rises upward from a position close to the lowest position of the key frame 10. Compared with the configuration, not only can the base portion of the key guide portion 12 be provided at a position close to the key, but also the key guide portion 12 can be designed to be short. Thereby, since the deformation | transformation to the key arrangement direction of the key guide part 12 is few and rigidity becomes high, it becomes easy to ensure high precision and leads to the improvement of key operativity.

  Moreover, in general, parts such as a white key key operation guide and a key pressing stopper are often provided in the vicinity of the mouth bar portion, but in this embodiment, it is necessary to reinforce the mouth bar portion 63. Since it is small, it is advantageous in that the space restriction is reduced.

  Further, since the inclined rib 96 is provided, the key frame 10 forms an inclined surface 96a from the second mounting portion 92 which is the lowest position and rises obliquely forward, so that the rigidity of the first mounting portion 91 is increased. high. Moreover, since the inclined rib 96 is close to the first mounting portion 91, the rigidity of the first mounting portion 91 can be further increased.

  Further, as a result of the support position (first mounting portion 91) of the mouth bar portion 63 being sufficiently higher than the lowest position (second mounting portion 92), the front surface 70 a (FIG. 2) that faces the player at the foremost portion of the lower case 70. It was possible to retract the position in the front-rear direction of the reference) backward from the front surface of the mouth bar portion 63. As a result, it is difficult for the player to see the front surface 70a. As a result, the mouth bar portion 63 is mainly visually recognized, so that the thickness of the thin mouth bar portion 63 in the vertical direction is the thickness of the keyboard device 1 itself. Good looking.

  Further, as a result of arranging the first mounting portion 91 at a high position, an empty space 95 for arranging various functional parts is generated in a region from the lower side of the first mounting portion 91 to the lower side of the inclined surface 96a. By utilizing this empty space 95, desired functional parts according to the model can be arranged, and the degree of freedom in design is increased and the space is also saved.

  In addition, the floor covering 61 to the seat 62 of the upper case 60 which is the attachment portion of the mouth stick portion 63 is fixed to the lower portion of the first attachment portion 91, but the upper portion of the first attachment portion 91 is A key guide portion 12 is provided. Thereby, since the 1st attaching part 91 serves as the function which attaches the mouth stick | rod part 63, and the function which provides a key operation | movement guide part, a structure is simple and it becomes a space-saving.

  In the present embodiment, the mouth bar portion 63 is formed integrally with the upper case 60, but is not limited thereto, and may be formed extending from the lower case 70, The upper case and the lower case may be extended from an integrated case. Alternatively, the mouth bar portion 63 may be an independent body.

It is a longitudinal cross-sectional view of the keyboard apparatus which concerns on one embodiment of this invention. It is an expanded sectional view of the front part of a keyboard apparatus. It is sectional drawing (a figure (a)) of a front part of a key frame, a sectional view of a front part of an upper case (figure (b)), and a sectional view of a front part of a lower case (figure (c)). FIG. 6 is a partial plan view (FIG. (A)) of the front portion of the lower case, a partial plan view of the front portion of the key frame (FIG. (B)), and a partial front view of the front portion of the key frame (FIG. (C)). . It is sectional drawing (a figure (a)) of a front end part of a white key, and a back view (figure (b)) of a front end part of a white key.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Keyboard apparatus, 10 Key frame (support member), 12 Key guide part (key operation guide part), 20 White key, 40 Black key, 63 Mouth stick part, 91 1st attaching part (mouth stick part attaching part), 92 Second mounting portion (lowermost position), 95 empty space (arrangement space), 96 inclined rib (rising portion), 96a inclined surface, KB keyboard

Claims (4)

A lower case having a mounting portion;
A support member disposed on the lower case ;
A keyboard comprising a plurality of keys disposed on the support member and swingable on the support member;
A mouth bar portion having a mounted portion and disposed in front of the keyboard;
Provided on the support member, and having a mouth bar part mounting part for attaching the mouth bar part to the support member;
The support member has a rising portion that rises upward from the lowest position of its front portion,
The mouth stick portion attaching portion is provided at a position higher than the lowest position in the rising portion ,
Between the mouth stick part attaching part of the support member and the attaching part of the lower case, the attached part of the mouth stick part is in a state of being fastened to the mouth stick part attaching part and the attaching part. Keyboard device characterized by being fixed by A support member;
A keyboard comprising a plurality of keys disposed on the support member and swingable on the support member;
A mouth stick portion disposed in front of the keyboard;
Provided on the support member, and having a mouth bar part mounting part for attaching the mouth bar part to the support member;
The support member has a rising portion that rises obliquely forward and upward, forming an inclined surface from the lowermost position of the front portion,
The mouth stick portion attaching portion is provided at a position higher than the lowest position in the rising portion ,
2. A keyboard device according to claim 1, wherein a region where the support member does not exist is generated in a region from the lower side of the mouth bar portion to the lower side of the inclined surface . The attached portion of the mouth stick portion is attached to a lower portion of the mouth stick portion attaching portion, and the upper portion of the mouth stick portion attaching portion guides the key release operation of the white key among the keys. The keyboard apparatus according to claim 1, further comprising a key operation guide unit. The mouth bar part is attached to a lower part of the mouth bar part attaching part, and a key operation guide part for guiding a pressing operation of a white key among the keys is provided at an upper part of the mouth bar part attaching part. The keyboard device according to claim 2 , wherein the keyboard device is provided.

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