JP2020048770A - Upright type piano toy - Google Patents

Abstract

To provide an upright type piano toy capable of facilitating separation and connection (re-assembly) between a key board part and a sound source part.SOLUTION: A hammer 40 is rotated by an operation of a key 30 arranged on a key board part 3, and a sound is produced by patting one of sound production bodies 50 fixed to a sound source part 5 in an upright type piano toy. The key board part 3 comprises: a plurality of keys 30; a hammer 40 which produces a sound from the sound production body by colliding a front end part 41 of the hammer to a corresponding sound production body 50; and an action rail 39 which is provided on a rear and upper position of a rotary axis of the hammer 40 and extends in a lateral direction. The sound source part 5 erects and arranges the sound production bodies 50 whose number corresponds to a number of keys 30, and the sound source part 5 can be detachably fitted to the key board part 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an upright-type piano toy in which a hammer strikes a sounding body when a keyboard is operated, and relates to a piano toy having a structure that can be used as a percussion instrument in which a sounding body portion is separated and struck with a mallet to sound. .

For example, as disclosed in Patent Document 1, a piano toy is configured to include an upper case and a lower case, and a keyboard is arranged in the lower case and a plurality of wooden sounding bodies are arranged in the upper case. There is a musical instrument toy that sounds when a hammer connected to the tip of a key is turned by pressing a key constituting a keyboard and the tip of the hammer hits the back surface of the sounding body.
An opening is provided on the upper surface side of the upper case so that each sounding body faces, and the sounding body is hit from the opening side using a mallet, so that it can be used like a percussion instrument (xylophone). .

Japanese Utility Model Publication No. 61-21103

According to the piano toy described in Patent Literature 1, since the hammer is housed inside the case, it is not possible to visualize the mechanism that sounds when the key is pressed and the hammer rotates and hits the sounding body. Therefore, it was difficult for infants using the piano toy to understand the principle of pronunciation.
The piano toy disclosed in Patent Literature 1 employs the sounding principle of a grand type piano, and does not have a structure showing the sounding principle of an upright type piano, which has a high penetration rate.

Further, the piano toy disclosed in Patent Document 1 does not have a structure in which a keyboard portion having a plurality of keys and a sound source portion having a plurality of sounding bodies can be completely separated from each other, and does not assume that a percussion instrument (xylophone) is used alone.
Furthermore, when an upright piano toy is used to realize a structure in which the keyboard and the sound source can be separated from each other, a situation occurs in which the hammer that has been rotated while the sound source is separated from the keyboard is difficult to return to its original position. There is a possibility that re-assembly (connection of the sound source section to the keyboard section) may be hindered.

The present invention has been proposed in view of the above circumstances, and has as its object to provide a piano toy having a structure capable of visualizing the sounding principle of an upright piano.
Another object of the present invention is to provide a structure that can easily separate and connect (reassemble) a keyboard portion and a sound source portion when an upright piano structure is employed in a piano toy.

To achieve the above object, the upright-type piano toy according to claim 1 is characterized in that a hammer (40) is rotated by operating a key (30) arranged on a keyboard section (3), and a sound source section (5). An upright piano toy that emits a sound by striking a sounding body (50) fixed to a toy, characterized by including the following configuration.
The keyboard part (3)
A plurality of keys (30) arranged side by side in the left-right direction, each extending in the front-rear direction, and swingably supported by the keyboard portion (3) near the center in the longitudinal direction;
Each of the keys (30) is rotatably supported at the rear end thereof, rotates in conjunction with the pressed key (30), and the front end (41) collides with the corresponding sounding body (50). A hammer (40) for generating a sound from the sounding body,
An action rail (39) extending in the left-right direction at a position rearward and above the rotation shaft (45) of the hammer (40).
The sound source section (5) is provided with a number of sounding bodies (50) corresponding to the keys (30).
When the key is depressed, the rotation axis (45) of the hammer (40) rises in accordance with the elevation of the rear end of the key (30), and the action rail (39) moves when the rear end of the hammer (40) moves upward. , The further elevation of the rear end of the hammer is restricted, and further key depression advances the front end of the hammer toward the sounding body (50) about the rotation axis (45) of the hammer (40). It is pronounced by turning and colliding.
The sound source section (5) is detachably attached to the keyboard section (3).

Claim 2 is the upright-type piano toy of claim 1,
The rotation of the hammer (40) when the key is pressed in a state where the sound source section (5) is separated from the keyboard section (3) is rotated at a position ahead of a position where the hammer (50) collides with the sounding body (50). It is characterized by being regulated.

  According to a third aspect of the present invention, in the upright piano toy of the first aspect, a V-shaped groove (43) is formed on a rear end upper surface (42) of each hammer (40) to constitute the V-shaped groove (43). Each surface forms a portion that regulates the elevation and a portion that regulates the rotation.

  According to a fourth aspect, in the upright piano toy according to the first aspect, the lower end position of each sounding body (50) fixed to the sounding body mounting plate (53, 54) of the sound source section (5) is: It is characterized in that the higher the tone is, the higher it is located.

  According to the first aspect of the present invention, when the hammer (40) moves upward, the rear end of the hammer comes into contact with the action rail (39), thereby restricting the hammer rear end from further rising, and further key depression. Separation and connection (reassembly) of the keyboard part (3) and the sound source part (5) while adopting the structure of an upright-type piano that collides with the sounding body (50) by the rotation of the hammer (40) due to be able to.

  According to the invention of claim 2, when the hammer (40) rotates in a state where the sound source section (5) is separated from the keyboard section (3), the rear end of the hammer comes into contact with the action rail (39). By restricting further rotation of the hammer (40), it is possible to set a rotation limit position where the hammer (40) returns to the original position of the keyboard (3) by its own weight.

  According to the invention of claim 3, a V-shaped groove (43) is formed in the upper surface on the rear end side of each hammer (40), and a portion that regulates the rise by each surface constituting the V-shaped groove (43). By forming the part for restricting the rotation, it is possible to reliably restrict the rise and the rotation of the hammer (40) at a predetermined position or more.

  According to the fourth aspect of the present invention, by adjusting the lower end position of the sounding body (50), a position of the same ratio with respect to the entire length of each sounding body (50) is adjusted by the front end (41) of the hammer (40). Can be hit.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective explanatory view of the upright-type piano toy (connection state of a keyboard part and a sound source part) of this invention. It is a perspective explanatory view of the upright type piano toy (separated state of a keyboard part and a sound source part) of this invention, (a) is a perspective explanatory view of a sound source part, (b) is a perspective explanatory view of a keyboard part. It is a front explanatory view of an upright type piano toy. It is an explanatory side view of an upright type piano toy. It is a plane explanatory view showing composition of a key part. It is side surface explanatory drawing of a hammer. It is a plane explanatory view which shows the positional relationship of the key, the hammer, and the action rail in the keyboard part of an upright type piano toy. It is front explanatory drawing of the sound source part of an upright type piano toy. It is a side explanatory view for explaining an operation state of a keyboard and a hammer in a keyboard part of an upright type piano toy.

Hereinafter, an upright piano toy according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is an explanatory perspective view of an upright-type piano toy 1, which is formed by connecting a keyboard section 3 and a sound source section 5. The keyboard portion 3 has a frame formed by a front plate 31 (FIGS. 1 and 4), left and right side plates 32L and 32R (FIGS. 1 and 3), and a back plate 33 (FIG. 4). By closing with a face plate 34 (FIGS. 3 and 4), a box body whose upper side is opened is formed.

A rectangular column-shaped mounting table 35 is fixed on the bottom plate 34 inside the box body, and the mounting table 35 is provided with eight octaves equivalent to one octave (de-re-mi-fa-so-la-sido). The keys 30 are arranged side by side in the left-right direction (FIG. 3). Each key 30 is swingably supported by a mounting table 35 via a pin 30b at a position where the key 30 extends from the hole 30a provided in the vicinity of the center in the longitudinal direction and becomes a fulcrum. (Fig. 4).
Further, a collision plate 36 is mounted below the tip of the key on the front side of the mounting table 35 of the bottom plate 34 so that the lower surface of the key 30 abuts against the collision plate 36 so that the key 30 cannot be pushed below a predetermined position. By doing so, downward swing of the key 30 is regulated.

As shown in FIG. 5, each key 30 is provided with a groove 30c on the rear end side thereof, and an L-shaped hammer 40 having a front end 41 is rotatably supported in the groove 30c via a rotation shaft 45. ing.
As shown in FIG. 4, the hammer 40 moves upward in conjunction with the pressed key 30, and thereafter rotates about a rotation shaft 45, and the front end 41 is attached to the sound source unit 5. When the sounding body 50 collides, a sound is generated from the sounding body.

At a position rearward and above the rotation shaft 45 of the hammer 40, an action rail 39 extending in the left-right direction for controlling the movement and rotation of the hammer 40 is fixedly connected to the rear plate 33. ing.
As shown in FIG. 6, a V-shaped groove 43 is formed on the rear end side of the upper surface 42 of the hammer 40. Then, the movement (elevation) and rotation of the position of the hammer 40 relative to the pressing of the key 30 with respect to the action rail 39 are restricted by the front surface 43 a and the rear surface 43 b constituting the V-shaped groove 43. Has become. The front surface 43a and the rear surface 43b of the V-shaped groove 43 are set to have a larger inclination angle toward the rear surface 43b than the front surface 43a.
The details of the movement and rotation of the hammer 40 will be described later together with the sound generation operation thereby.

  As shown in FIGS. 7 and 8, the sound source unit 5 has a rear plate 51 mounted between side plates 52L and 52R having different heights, and the rear plate 51 is provided with side plates 52L and 52R. The sounding body mounting plate 53 is arranged at a position connecting the lower ends, and the sounding body mounting plate 54 is arranged at a position connecting the upper ends. On the front side of the sounding body mounting plate 53 and the sounding body mounting plate 54, a number (eight) of sounding bodies 50 corresponding to the respective keys 30 are erected and fixed. Each of the sounding bodies 50 is formed to have a different length so that one octave of sound is generated, and is mounted on the sounding body mounting plates 53 and 54 from left to right in the longest order.

  The lower end position of each sounding body 50 is also fixed to the sounding body mounting plates 53 and 54 so as to be higher from left to right. This is because the collision height at each sounding body 50 due to the front end 41 of the hammer 40, which will be described later, is at the same position in terms of structure, so that the collision position with respect to the entire length of each sounding body 50 is to be as uniform as possible. This is to make the length ratios from the lower end equal.

When the lower end of the rear plate 51 is fitted into the groove 32a provided on the back side of the side plates 32L and 32R of the keyboard 3, the sound source 5 is mounted upright on the keyboard 3 (FIG. 1). When the sound source unit 5 is separated from the keyboard unit 3, as shown in FIG. 2, the sound source unit 5 can be used as a xylophone having a back plate 51 as a bottom surface.
Further, storage pieces 60L, 60R may be provided on the side plates 32L, 32R, respectively, so that a pair of wooden mallets 70 for hitting the sounding body 50 when used as a xylophone may be stored on the left and right sides (FIGS. 3 and 4). ).

  According to the above-described upright piano toy, the sounding principle of the upright piano is achieved by arranging and connecting the sounding body 50 of the sound source section 5 to the keyboard section 3 on which the plurality of hammers 40 are arranged. The structure can be visualized.

Next, a description will be given, with reference to FIG. 9, of a sounding operation by pressing a key when used in an upright piano toy in which the sound source unit 5 is connected to the keyboard unit 3.
When the front (front) side of the key 30 is pressed, the key 30 swings down using the position of the pin 30b as a fulcrum, and the position of the hammer 40P (normally stationary position) connected to the rear side of the key 30 changes to the position of the hammer 40Q. Then, the rear surface 43b comes into contact with the lower surface of the action rail 39, so that the further rise of the hammer 40R (the upper limit position) is restricted. That is, the rear surface 43b of the V-shaped groove formed on the rear end side of the hammer 40 serves as a portion that regulates the upward movement of the rear end side of the hammer 40.

When the key 30 is further depressed, the hammer 40 rotates rearward about the rotation shaft 45 as shown by the hammer 40S.
Then, when the key 30 is depressed, the rotation is further continued, and the front end portion 41 collides with the sounding body 50 at the position of the hammer 40T (collision position) and emits sound.
In this state (the position of the hammer 40T), there is a gap between the front surface 43a of the hammer 40 and the action rail 39, and the front surface 43a does not collide with the action rail 39.

When the key 30 is pressed with the sound source section 5 separated from the keyboard section 3, the hammer 40 pivots further rearward from the above-described position of the hammer 40T because there is no collision sounding body 50. However, when the front surface 43a of the hammer 40 comes into contact with the action rail 39, further rotation of the hammer 40 is restricted while the hammer 40 is inclined forward. That is, the front surface 43a of the V-shaped groove formed on the rear end side of the hammer 40 is a portion that restricts the rotation of the hammer 40.
When the key 30 is depressed, the hammer 40 is inclined forward, so that the hammer 40 rotates forward (forward) depending on the center of gravity, and returns to the hammer 40P (normally stationary position).
Therefore, even if the key 30 is depressed in a state where the sound source unit 5 is separated from the keyboard unit 3, a groove 32 a to which the sound source unit 5 is connected is formed on the rear position side where the hammer 40 exceeds the action rail 39. The keyboard portion 3 can always be connected to the sound source portion 5 by securing a space on the groove portion 32a side without standing still at the position (side).

  As a result, when the infant plays with the upright-type piano toy 1, even when the sound source section 5 is separated from the keyboard section 3 and used as a xylophone, the separated keyboard section 3 always connects the sound source section 5. In order to maintain the possible state, the infant can easily perform reassembly (connection of the sound source unit 5 to the keyboard unit 3).

  According to the upright-type piano toy described above, the sounding body 50 is described as an example in which eight pieces corresponding to one octave are provided, but a configuration in which eight or more pieces are arranged may be used.

  DESCRIPTION OF SYMBOLS 1 ... Upright type piano toy, 3 ... Keyboard part, 5 ... Sound source part, 30 ... Key, 30b ... Pin (fulcrum), 31 ... Front plate, 32L, 32R ... Side plate, 33 ... Back plate, 34 ... Bottom plate , 35 mounting base, 39 action rail, 40 hammer, 41 front end, 42 upper surface, 43 V-shaped groove, 43a front surface, 43b rear surface, 45 rotating shaft, 50 sounding body Reference numeral 51: back plate, 52L, 52R: side plate, 53, 54: sounding body mounting plate.

Claims (4)

An upright piano toy that emits a sound by striking a sounding body fixed to a sound source section by rotating a hammer by operating a key arranged on a keyboard section,
The keyboard section,
A plurality of keys arranged side by side in the left and right direction, each of which extends in the front and rear direction and is swingably supported by the keyboard portion near the center in the length direction;
A hammer that is rotatably supported at the rear end side of each of the keys, rotates in conjunction with the pressed key, and generates sound from the sounding body when the front end collides with the corresponding sounding body. ,
An action rail extending in the left-right direction at a position rearward and above the rotation axis of the hammer,
The sound source unit is configured by arranging a number of sounding bodies corresponding to the keys,
When the key is depressed, the rotation axis of the hammer rises in accordance with the rise of the rear end of the key, and when the rear end of the hammer moves upward, the hammer comes into contact with the action rail to further raise the rear end of the hammer. When the key is further depressed, the front end of the hammer rotates around the hammer rotation shaft toward the sounding body and produces sound when colliding,
An upright piano toy, wherein the sound source section is detachably attached to the keyboard section. In a state where the sound source section is separated from the keyboard section,
The upright-type piano toy according to claim 1, wherein the rotation of the hammer when the key is pressed is restricted at a position before the position where the hammer collides with the sounding body.   The V-shaped groove is formed on the rear end side upper surface of each hammer, and a portion that regulates the elevation and a portion that regulates the rotation are formed by the respective surfaces constituting the V-shaped groove. Upright type piano toy.   The upright-type piano toy according to claim 1, wherein the lower end position of each sounding body fixed to the sounding body mounting plate of the sound source unit is located higher as the musical tone is higher.

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