JP2018072703A - Keyboard instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freely design the pitch of a vibration valve, avoid concentration of a mechanism for flipping the vibration valve, and save material. SOLUTION: A sounding unit 10 is provided corresponding to each of a plurality of keys K, and a reed 12, which is a vibration valve, extends from a base 11 in a cantilever state. Each sounding unit 10 is made of metal. The support portion 31 is fixed to the musical instrument body 30. The base 11 of each sounding unit 10 is attached to the support 31. The interlocking member 25 is displaced in response to the operation of the corresponding key K, and drives (plays) the corresponding lead 12 to produce a sound. [Selection diagram] Figure 1

Description

  The present invention relates to a keyboard instrument that generates a vibration valve such as a lead provided corresponding to a key.

  Conventionally, an attempt has been made to sound a music box device by operating a key on a keyboard (Non-Patent Document 1 below). Non-Patent Document 1 discloses a structure in which a star wheel is rotated by a motor and a lead is generated by a key operation.

“Nagashima Laboratories-Music Box and Automatic Musical Instrument”, [online], Music Box (October 3, 2016 search), Internet <URL: http://www.nagashima-lab.com/?page_id=192>

  Since it is not realistic in terms of cost to specially order the lead pitch according to the key, it is normal to use a commercially available music box as a sounding unit, and it seems that the non-patent document 1 also uses a commercially available product. . In such a commercial product, since the lead pitch is narrower than the key pitch, the drive mechanism is concentrated when the mechanism for driving (repelling) the lead is arranged in a narrow space. If a sounding unit is specially manufactured in which the pitch of leads extending from the base matches the key, there is a disadvantage that the corresponding material is wasted between adjacent leads. By the way, when the lead is played by a key operation, it is necessary to accurately ensure the mutual positional relationship between the lead and the drive unit that drives the lead. However, when a commercially available music box is used, the position of each lead is fixed, so that it is necessary to adjust the position on the key and drive side.

  The present invention has been made to solve the above-described problems of the prior art, and its purpose is to freely design the pitch of the vibration valve, to avoid the concentration of a mechanism for flipping the vibration valve, and to save material. It is to provide a keyboard instrument that can be used.

  In order to achieve the above object, a keyboard musical instrument according to claim 1 of the present invention includes a musical instrument main body (30), a support portion (31) that is a part of the musical instrument main body or a part fixed to the musical instrument main body, and a plurality of musical instruments. Corresponding to a plurality of sounding bodies (10) each having a key and a metal cantilevered vibration valve, each corresponding to each of the plurality of keys being attached to the support, and each of the plurality of keys And a sounding body drive unit (25) that is displaced in accordance with the operation of the corresponding key and generates sound by playing the vibration valve of the corresponding sounding body. In addition, the code | symbol in the said parenthesis is an illustration.

  According to the first aspect of the present invention, it is possible to freely design the pitch of the vibration valve, avoid the concentration of the mechanism for flipping the vibration valve, and save the material.

  According to the second and third aspects, each of the sounding bodies can be attached to an accurate position. According to the fourth aspect, it is easy to achieve a design in which the attachment state is strengthened and the position can be adjusted. According to the fifth aspect, the sounding body can be easily attached.

It is the top view and side view of the principal part of the keyboard musical instrument which concerns on 1st Embodiment. Plan view (figure (a)), side view (figure (b)) of the sounding unit of the first modification, plan view (figure (c)) of the sounding unit of the second modification, third modification FIG. 4 is a plan view (FIG. (D)) and a side view (FIG. (E)) of the sound generation unit. It is a top view (figure (a)) of the sound generation unit in a 2nd embodiment, a top view (figure (b)), and a side view (figure (c)) of a sound generation unit of the 4th modification.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
FIGS. 1A and 1B are a plan view and a side view, respectively, of the main part of the keyboard instrument according to the first embodiment of the present invention. In this keyboard instrument, a plurality of keys K including a white key WK and a black key BK are disposed on an instrument body 30 such as a lower case. This keyboard instrument is configured to play a lead 12 as a vibration valve of a sounding unit 10 as a sounding body provided corresponding to the key K and vibrate it by operating the key K to generate sound. The arrangement direction of the keys K is the left-right direction, and the longitudinal direction of the keys K is the front-rear direction. The keyboard instrument has a plurality of key units KUT in which a plurality of keys K (for example, one octave) are integrated. FIG. 1A shows one of the key units KUT. The key unit KUT is made of resin, for example.

  The keyboard instrument has a plurality of sounding units 10. In the present embodiment, the sound generation unit 10 exists for each pitch. Each sound generation unit 10 has a base 11, and a lead 12 that is a vibration valve extends from the base 11 in a cantilever state. Each sounding unit 10 is made of metal. Although the basic configuration of each sound generation unit 10 is common, each lead 12 has a different extension length and width from the base 11 depending on the pitch. The base 11 is attached to a support 31 fixed to the instrument body 30. The mode of attachment of the base 11 to the support portion 31 is not limited and may be fixed by adhesion or screwing.

  The key unit KUT has one common proximal end 20. The common base end 20 is supported by the instrument body 30. Each of the keys K in the key unit KUT is supported by the common base end portion 20 so that the rear end portion 21 can be rotated (swinged) by the rotating shaft 24. Accordingly, each of the keys K independently swings in the vertical direction with respect to the common base end portion 20 at the front end portion. Each key K is always urged to the non-key-pressed position, and is regulated to the non-key-pressed position by a positioning unit (not shown) in a non-operation state. Further, a stopper (not shown) for restricting the displacement end position in the key pressing direction of each key K is provided on the instrument main body 30. When the key pressing operation is performed, the front end portion of each key K swings downward, and when the key release operation is performed, the front end portion swings upward and returns to the non-key pressing position.

  Below each key K, an interlocking member 25 for playing the corresponding lead 12 is arranged. The structure of the interlocking member 25 corresponding to each key K is common. Each interlocking member 25 is rotatably arranged around the rotation shaft 24. The rotating shaft 24 is supported by the instrument body 30. A drooping portion 23 is droopingly formed from the key K, and the front end portion of the interlocking member 25 is engaged with the drooping portion 23, and the interlocking member 25 rotates in conjunction with the key K. When the key K is pressed, the tip of the corresponding interlocking member 25 rises and drives (repels) the corresponding lead 12. As a result, the lead 12 vibrates and sounds.

  By the way, each interlocking member 25 is assembled in advance with the hanging portion 23 of the corresponding key K, and the key unit KUT is unitized including the interlocking member 25 to form a unit 100 with a driving member. The tip position of the interlocking member 25 is almost common. At the stage of attaching the sounding unit 10 to the support portion 31, the position of the free end portion in the front-rear direction of each lead 12 is adjusted according to the tip position of the corresponding interlocking member 25. Also in the width direction (left-right direction), the pitch of the leads 12 is adjusted to coincide with the pitch of the interlocking member 25.

  The sounding unit 10 and the key unit KUT are assembled to the keyboard instrument as follows. First, the operator fixes the support portion 31 to the musical instrument body 30 and fixes the unit with drive member 100 (the key unit KUT including the interlocking member 25) to the frame. Next, the operator fixes the base portion 11 of the sound generation unit 10 to the support portion 31. Here, the relative positional relationship between the keys K and the interlocking members 25 in the key unit KUT is determined in advance. Therefore, when the base 11 is fixed to the support portion 31, the position of each lead 12 is adjusted while adjusting to the corresponding interlocking member 25 in the left and right and front and rear directions.

  According to the present embodiment, each of the sound generation units 10 having the leads 12 corresponds to each key K and is provided independently, and each base portion 11 is attached to the support portion 31. Therefore, the pitch of the lead 12 can be freely designed without being restricted to a small one like a commercially available music box, and can be easily matched with the pitch of the key K or the interlocking member 25, for example. Since the pitch of the lead 12 is not too narrow, it is possible to avoid the mechanism for flipping the lead 12 such as the interlocking member 25 from being concentrated in a narrow space. Also, material is not wasted compared to the case where a music box with a wide lead pitch is manufactured. Therefore, the pitch of the lead 12 can be freely designed, the concentration of the mechanism for flipping the lead 12 can be avoided, and the material can be saved. Further, since each lead 12 is independent, it is easy to provide a position adjusting mechanism for each lead 12.

  In this embodiment, in addition to an example of attaching the base 11 of the sound generation unit 10 to the support 31, an example employing a positioning mechanism will be described with reference to FIG. Since the structure of each sound generation unit 10 is the same, only one will be described as a representative.

  FIGS. 2A and 2B are a plan view and a side view of the sound generation unit 10 of the first modification. In this example, one positioning pin 32 protrudes from the support portion 31 and a screw hole (not shown) is formed at a position different from the positioning pin 32 in the front-rear direction. The base 11 is formed with one hole 11a having a shape into which the positioning pin 32 is fitted. The operator fits the hole 11 a of the base portion 11 in the positioning pin 32 and fixes the base portion 11 to the support portion 31 with the screw 13. The position of the sounding unit 10 in the longitudinal direction and the width direction of the lead 12 is regulated by the engagement between the positioning pin 32 and the hole 11a. The sounding unit 10 can be slightly rotated around the positioning pin 32 within a range of a hole formed in the base 11 through which the screw 13 passes, and the position can be finely adjusted in the rotation direction.

  FIG. 2C is a plan view of the sound generation unit 10 of the second modification. In this example, the base portion 11 of the sound generation unit 10 is fixed to the support portion 31 with two screws 13. The position of the sounding unit 10 in the longitudinal direction and the width direction of the lead 12 can be adjusted within a margin of a hole formed in the base 11 through which the screw 13 passes. According to the first and second modifications, each of the sound generation units 10 can be attached to an accurate position. Further, since the sound generation unit 10 is fastened and fixed by the screw 13, it is easy to make the design capable of adjusting the position while strengthening the mounting state. That is, there is a risk of peeling by fixing by pasting or the like, and fine adjustment is difficult because re-fastening cannot be performed. On the other hand, the position can be adjusted by fixing with screws, and the durability is improved. In addition, since the vibration of the lead 12 is easily transmitted to the support portion 31, an improvement in sound quality can be expected.

  2D and 2E are a plan view and a side view of the sound generation unit 10 of the third modification. In this example, two positioning pins 32 project from the support portion 31 and a screw hole (not shown) is formed between the two positioning pins 32. Two holes 11 a having a shape into which the positioning pin 32 fits are formed in the base 11 so as to correspond to the positioning pin 32. The operator fits the corresponding hole 11 a of the base 11 to each positioning pin 32, and fixes the base 11 to the support portion 31 with the screw 13. Since there are two sets of positioning pins 32 and holes 11a that constitute the positioning mechanism, the position of the sounding unit 10 in the longitudinal direction and the width direction of the lead 12 is uniquely restricted. According to the third modification, each of the sound generation units 10 can be attached to an accurate position, and the attachment state can be strengthened.

(Second Embodiment)
In the first embodiment, the sound generation units 10 are configured to be attached to the support portion 31 one by one. On the other hand, in the second embodiment of the present invention, there is provided fastening means for attaching two or more sounding units 10 to the support portion 31 all at once.

  FIG. 3A is a plan view of the sound generation unit 10 according to the second embodiment. In this example, two positioning pins 32 project from the sound generating unit 10 in the support portion 31 and screw holes (not shown) are formed at appropriate positions in the left-right direction. Each base portion 11 is formed with a hole 11 a having a shape into which the positioning pin 32 is fitted, corresponding to the positioning pin 32. In the present embodiment, the keyboard instrument has a holding member 16 and a screw 13 as fastening means.

  The operator fits each hole 11 a of the base 11 to the corresponding positioning pin 32 for each of the sound generation units 10. The restraining member 16 is put on the base portions 11 of the two sounding units 10, and the restraining member 16 is fixed to the support portion 31 with the two screws 13. Thereby, the two base parts 11 are fixed to the support part 31 all at once. The positioning mechanism is the same as the example shown in FIGS. 2D and 2E, and each of the sound generation units 10 has two positioning pins 32 and holes 11a. The position of the sound generation unit 10 is uniquely regulated.

  According to the present embodiment, the pitch of the leads 12 can be freely designed, the concentration of the mechanism for flipping the leads 12 can be avoided, and the same effects as the first embodiment can be achieved with respect to saving materials. Can do. Further, the same effects as those of the third modification (FIGS. 2D and 2E) can be achieved with respect to attaching each of the sound generation units 10 to accurate positions and strengthening the attachment state. . Furthermore, since two or more sounding units 10 can be attached together (simultaneously), the sounding body can be easily attached. Further, since it is not necessary to provide a hole in the base portion 11, the width of the base portion 11 can be designed to be small, and saving of materials and improvement in yield can be expected. The number of sounding units 10 that can be fixed simultaneously may be three or more.

  In the third modification (FIGS. 2D and 2E) and the present embodiment, a positioning pin 32 is used as a positioning mechanism that regulates the position of the sounding unit 10 in the longitudinal direction and the width direction of the lead 12. Although illustrated, it is not limited to this. 3B and 3C are a plan view and a side view of the sounding unit 10 of the fourth modification. For example, as illustrated in FIGS. 3B and 3C, a pair of positioning walls 14 and 14 in the width direction are provided on the support portion 31 and a positioning wall 15 in the longitudinal direction is provided so as to protrude. Then, the base 11 may be arranged in a range surrounded by the positioning walls 14, 14 and the positioning wall 15, and the base 11 may be fixed to the support portion 31 with the screw 13. This example can also be applied to the example of FIG.

  Note that the portion to which the sound generation unit 10 is attached may be a portion that is fixed to the instrument body 30. Therefore, the support part 31 may be a part of the musical instrument main body 30 or a part fixed to the musical instrument main body 30.

  Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. A part of the above-described embodiments may be appropriately combined.

  DESCRIPTION OF SYMBOLS 10 Sounding unit (sounding body), 12 Lead (vibration valve), 13 Screw, 16 Holding member (fastening means), 25 Interlocking member (sounding body drive part), 30 Musical instrument main body, 31 Support part, 32 Positioning pin (positioning part) ), K key

Claims (5)

The instrument body,
A support part which is a part of the instrument body or a part fixed to the instrument body;
Multiple keys,
A plurality of sounding bodies each having a vibration valve made of metal and in a cantilever state, each of which is attached to the support portion corresponding to each of the plurality of keys,
A sounding body driving unit that is provided corresponding to each of the plurality of keys, and that is displaced in accordance with an operation of the corresponding key, and that generates sound by playing the vibration valve of the corresponding sounding body. Keyboard instrument.   The keyboard instrument according to claim 1, further comprising a positioning portion that regulates a position of each of the sounding bodies with respect to the support portion.   The keyboard instrument according to claim 2, wherein the positioning unit regulates a position in a longitudinal direction and a width direction of each of the sounding bodies.   The keyboard instrument according to any one of claims 1 to 3, wherein each of the sounding bodies is fixed to the support portion with a screw. The keyboard instrument according to any one of claims 1 to 3, further comprising fastening means for attaching two or more sounding bodies simultaneously to the support portion.