JP2007093655A - Upright piano - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an upright piano which never has wrong position relation between a damper unit and strings even when a top plate and a shelf board are detached for repair etc., to hardly have a shift in fitting position with time. <P>SOLUTION: A support rail 59 which supports the damper unit 49 is supported only on a frame 39, so even when the top plate 9 and shelf board 19 are detached for repair etc., the damper unit 49 and strings can be prevented from having wrong position relation. Further, the frame is made of metal and hardly deforms with time, so the damper unit 49 and strings can be prevented from having wrong position relation with time owing to temporal deformation of the frame. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an upright piano, and more particularly to an upright piano provided with a volume control device in which a hammer device and a damper device are provided independently and the number of strings hit by the hammer is reduced to reduce the volume. .

In the upright piano shown in Patent Document 1, a hammer device and a damper device are provided independently.
This type of upright piano includes a volume control device that reduces the volume by reducing the number of strings hit by the hammer by stepping on the soft pedal and sliding the hammer laterally by a predetermined stroke in the keyboard alignment direction. With this upright piano, the adoption of a volume control device with a horizontal slide system gives the sound of a uniform and clear sound reminiscent of a grand piano, and the performance of the upright piano is greatly improved.

Japanese Utility Model Publication No. 5-38400

  However, in the upright piano disclosed in Patent Document 1, the support rail that supports the damper device is not only the frame, but the shelf board on which the left and right master plates and the keyboard that are difficult to obtain accuracy are placed on the piano body. If the support rail and the main plate or shelf board are separated for repair, etc., and the support rail is separated from the main plate or shelf board, the positional relationship between the damper device and the strings will be incorrect. There is.

  The adjustment of the positional relationship between the damper device and the string is quite delicate, and a considerably advanced technique is required to return the positional relationship between the damper device and the string to the correct state.

  Further, there is a possibility that the parent plate and the shelf plate may be warped due to long-term use, and accordingly, the mounting position of the damper device may need to be adjusted each time.

  The present invention was made in view of the problems of the above-mentioned background art, and even if the main plate or the shelf plate is removed for repair or the like, the positional relationship between the damper device and the string does not go wrong, It is an object of the present invention to provide an upright piano that is less likely to shift its mounting position over time.

  In order to solve the above-mentioned problem, the invention described in claim 1 is related to a hammer device that operates a hammer corresponding to the key to generate a sound by striking a predetermined string by hitting the key and the operation of the hammer. And a damper device that operates the damper lever to separate the damper that has been in contact with the string from the string, and operates the operating member to slide the hammer horizontally in the keyboard alignment direction. An upright piano comprising a volume control device for reducing the volume by reducing the number of strings hit by a hammer, wherein the support rail supporting the damper device is supported only on the frame It is a piano.

  According to a second aspect of the present invention, in the upright piano according to the first aspect, the frame is provided with a plurality of mounting base portions for supporting both ends and an intermediate portion of the support rail. Is an upright piano.

  According to a third aspect of the present invention, in the upright piano according to the second aspect, the support rail includes two end support brackets that support both end portions of the support rail, and an intermediate portion that supports the intermediate portion of the support rail. The upright piano is characterized by being attached to the mounting base portion via a support bracket for a portion and a support bolt for supporting another intermediate portion of the support rail.

  According to a fourth aspect of the present invention, in the upright piano according to the third aspect, the intermediate support bracket is a rail support bracket provided on the support rail side, and a base mount bracket provided on the attachment base portion side. The rail support bracket is attached to the base mounting bracket in a state that can be adjusted in the height direction, and is an upright piano.

  According to a fifth aspect of the present invention, in the upright piano according to the third or fourth aspect of the present invention, the mounting base portion to which the intermediate portion support bracket is attached has a shape projecting horizontally forward in a bowl shape. It is an upright piano characterized by being.

According to the upright piano of the present invention, it is possible to prevent the positional relationship between the damper device and the strings from being out of order even if the parent plate or the shelf plate is removed for repair or the like.
Further, since the frame is made of metal and is not easily deformed with time, it is possible to prevent the positional relationship between the damper device and the string from being changed over time.

An upright piano 1 according to an embodiment of the present invention will be described.
The piano body 5 includes two main plates 7 each having a vertically long rectangular flat plate provided on the left and right sides. Two arms 17 projecting forward are provided at a height near the middle of the left and right parent plates 7, and the bottom of the space sandwiched between the two arms 17 is also rectangular so as to project forward. A flat shelf 19 is horizontally stretched.

On the shelf 19, a keyboard having keys 29 aligned in the frontage direction is provided (see FIG. 1). A soft pedal (not shown) as an operation member is provided at the lower front portion of the piano body 5.
A metal frame 39 having high rigidity is provided inside the piano body 5. A large number of strings 37 corresponding to the keys 29 are stretched on the frame 39. Further, a hammer device 43 and a damper device 49 are provided as separate units in front of the frame 39, respectively. The damper device 49 is supported by the support rail 59.

  The hammer device 43 strikes the key 29 to pivot the pivotal support point 51 as the center of rotation. The whippen 53 pivots a predetermined angle in the counterclockwise direction in FIG. And a motion transmission device 55 that rotates in the direction. Further, a damper spoon 57 for operating the damper 47 in conjunction with the movement of the hammer 41 is erected on the upper surface of the whippen 53 on the opposite side to the part to which the operation transmitting device 55 is connected with the rotation fulcrum 51 as a boundary. ing.

The damper device 49 includes a large number of dampers 47 corresponding to the number of keys 29, and a large number of damper levers 45 as operation transmission means of the dampers 47.
When the key 29 is hit with a finger, as described above, the whippen 53 rotates counterclockwise in FIG. 1 to operate the hammer 41 corresponding to the key 29 to hit a predetermined string 37, and a hammer action is executed. In conjunction with this, the damper spoon 57 pushes the lower end portion 45a of the damper lever 45 to rotate the damper lever 45 clockwise around the rotation fulcrum 61 in FIG.
Along with this, the damper 47 performs a damper action that leaves the string 37 that was in contact just before the hammer 41 hits the string 37.

  The volume control device is a well-known device and is a device that slides the hammer 41 laterally along the hammer action rail 65 in the keyboard alignment direction by depressing one of the soft pedals. As the hammer 41 slides sideways, the number of strings 37 struck by the hammer 41 is reduced and the volume is reduced. This volume control device also has a function of adjusting the tone. That is, the hammer 41 is provided with a felt stringing portion, but the player can adjust the tone by selecting the soft and hard portions of the stringing portion by adjusting the depression of the soft pedal.

  Note that the damper stop device 63 is provided under the support rail 59 along the support rail 59 by pushing up one of the soft pedals to push up the connecting lever 67 shown in FIG. The hook-shaped damper rod 69 is moved to the damper lever 45 side. As a result, all the damper levers 45 are rotated in the clockwise direction in FIG. 1 around the rotation fulcrum 61, and all the dampers 47 are simultaneously separated from the strings 37.

  A support rail 59 that supports the damper device 49 is supported with respect to the frame 39. Specifically, as shown in FIG. 7, the frame 39 is provided with four attachment base portions, that is, a left end base portion 71, a right end base portion 73, an intermediate left base portion 75, and an intermediate right base portion 77. By attaching the end support bracket 79, the intermediate support bracket 81, the support bolt 83, and the other end support bracket 79 to the mounting base portions 71, 73, 75, 77, the support rail 59 is mounted. It is configured to support.

The left end base portion 71 is constituted by a wide rectangular vertical flat surface in which the left end portion of the frame 39 protrudes somewhat to the right (inward), and an upper end support bracket 79 is provided at the upper and lower portions thereof. A screw hole 85 is formed in which a female screw used for mounting is engraved.
The right end base portion 73 is formed by a wide rectangular vertical flat surface in which the right end portion of the frame 39 protrudes somewhat to the left (inside). Screw holes 85 are formed in the upper and lower portions of the right end base portion 73 and used when other end support brackets 79 similar to the left end base portion 71 are attached.

The middle left base portion 75 is located below the left end base portion 71 and the right end base portion 73, and is configured by a rectangular horizontal flat surface in which a part of the frame 39 is horizontally projected in a bowl shape. ing.
On the upper surface of the intermediate left base portion 75, two screw holes 85 are formed in which female screws used for attaching the intermediate support bracket 81 are engraved.

The intermediate right base portion 77 is provided on an inclined rib 87 formed on the frame 39 located in the foremost position among the mounting base portions 71, 73, 75, 77.
That is, it is formed by processing a part of the front end surface of the inclined rib 87 flatly, and one screw in which a female screw for mounting the support bolt 83 is engraved at the center of the intermediate right base portion 77. A hole 85 is formed.

The two end support brackets 79 are of the same shape and the same size, and are formed by appropriately bending a strip-like vertically long rectangular flat plate member so that the center becomes higher as shown in the figure. Yes.
The upper and lower end piece portions attached to the left end base portion 71 or the right end base portion 73 have height adjusting elongated holes 89 extending in the vertical direction (vertical direction in FIGS. 3A and 6A), respectively. Is formed.
In addition, a receiving hole 93 for receiving the shaft portion of the mounting bolt 91 is formed at the center of the center portion of the end support bracket 79 which is one step higher.

The intermediate support bracket 81 is composed of two members, a rail support bracket 95 provided on the support rail 59 side and a base mounting bracket 97 provided on the intermediate left base portion 75 side.
The rail support metal fitting 95 is a long and narrow flat plate member bent in a U-shape, and its upper end is fixed to the support rail 59 using an attachment bolt 91 and an attachment nut 99.
Two receiving holes 93 for receiving the mounting bolts 91 are formed in the lower end portion of the rail support fitting 95 in the vertical direction.

  The base mounting bracket 97 has an L-shaped cross section, and two receiving holes 93 for receiving the mounting bolts 91 are formed in the horizontal portion 101 located at the lower portion. In addition, two height adjusting elongated holes 89 extending in the vertical direction are provided in series in the upper portion of the vertical portion 103 extending upward.

The support bolt 83 is a bolt constituted only by a shaft portion in which a male screw is engraved, and is fixed to the intermediate right base portion 77 using a mounting nut 99. The mounting nut 99 for fixing the support rail 59 is provided with two types, a nut with a flange and a nut without a flange. The nut with a flange is an adjustment nut 105 for adjusting the fixing position of the support rail 59 in the front-rear direction. The nut without the flange is a lock nut 107 for fixing the support rail 59.
As shown in the figure, the support rail 59 is provided with four width adjustment elongated holes 109 extending horizontally in the frontage direction. After adjusting the width of the support rail 59, the mounting bolt 91 passing through the elongated hole 109 and the support bolt 91 are supported. The support rail 59 is positioned in the width direction by screwing the mounting nut 99 onto the bolt 83.

In this upright piano 1, since the support rail 59 that supports the damper device 49 is supported only on the frame 39, the damper device 49, the string 37, Can be prevented from going wrong.
Further, since the frame is made of metal and is not easily deformed with time, it is possible to prevent the positional relationship between the damper device 49 and the string 37 from being changed over time.

The embodiment of the present invention has been described in detail above, but the specific configuration of the present invention is not limited to the illustrated embodiment, and even if there is a design change or the like without departing from the gist of the present invention. Included in the invention.
For example, with respect to the left end base portion 71 and the right end base portion 73, it is possible to form convex portions having a predetermined height on these flat surfaces. Omitted and the support rail 59 using the support bolt 83 as in the middle right base portion 77 can be fixed.

It is side sectional drawing which shows the hammer apparatus and damper apparatus which are provided in the inside of an upright piano. It is a perspective view which shows the support structure of the damper apparatus of the upright piano which concerns on embodiment of this invention. It is the front view (a) which shows the structure of the left end part of the support structure of the damper apparatus of the upright piano which concerns on embodiment of this invention, and AA sectional drawing (b) in the same figure. It is a sectional side view which shows the structure of the intermediate left part of the support structure of the damper apparatus of the upright piano which concerns on embodiment of this invention. It is a sectional side view which shows the structure of the intermediate | middle right part of the support structure of the damper apparatus of the upright piano which concerns on embodiment of this invention. It is the front view (a) which shows the structure of the right end part of the support structure of the damper apparatus of the upright piano which concerns on embodiment of this invention, and BB sectional drawing (b) in the same figure. It is a front view which shows the flame | frame to which the support structure of the damper apparatus of the upright piano which concerns on embodiment of this invention was applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upright piano 3 Damper apparatus support structure 5 Piano main body 7 Master plate 9 Top plate 17 Arm 19 Shelf plate 29 Key 35 Volume control device 37 String 39 Frame 41 Hammer 43 Hammer device 45 Damper lever 45a Lower end portion 47 Damper 49 Damper device 51 fulcrum 53 whippen 55 motion transmission device 57 damper spoon 59 support rail 61 fulcrum 63 damper stop device 65 hammer action rail 67 coupling lever 69 damper rod 71 left end base (mounting base)
73 Right end base (mounting base)
75 Middle left base (mounting base)
77 Middle right base (mounting base)
79 End support bracket 81 Intermediate support bracket 83 Support bolt 85 Screw hole 87 Inclined rib 89 Long hole 91 Mounting bolt 93 Receiving hole 95 Rail support bracket 97 Base mounting bracket 99 Mounting nut 101 Horizontal portion 103 Vertical portion 105 Adjustment nut 107 Lock nut 109 Long hole

Claims (5)

  A hammer device that operates a hammer corresponding to the key by hitting a key to generate a sound by hitting a predetermined string, and a damper that is in contact with the string by operating a damper lever in conjunction with the operation of the hammer. Volume control that reduces the volume by reducing the number of strings that the hammer strikes by operating the operating member and sliding the hammer horizontally in the keyboard alignment direction. An upright piano comprising a device, wherein a support rail that supports the damper device is supported only on a frame.   2. The upright piano according to claim 1, wherein the frame is provided with a plurality of mounting base portions for supporting both ends and an intermediate portion of the support rail.   The upright piano according to claim 2, wherein the support rail includes two end support brackets for supporting both ends of the support rail, an intermediate support bracket for supporting an intermediate portion of the support rail, and a support rail. An upright piano, wherein the upright piano is attached to the attachment base portion via a support bolt that supports another intermediate portion.   The upright piano according to claim 3, wherein the intermediate support bracket is composed of two members: a rail support bracket provided on the support rail side and a base mount bracket provided on the attachment base portion side. The upright piano is characterized in that the rail support fitting is attached to a base attachment fitting in a state of being adjustable in a height direction. 5. The upright piano according to claim 3, wherein the mounting base portion to which the intermediate support bracket is attached has a shape that projects horizontally in a bowl shape. 5. .

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