SU1170493A1 - Tool for tightening strings of musical instrument like piano - Google Patents

Abstract

1. DEVICE FOR TENSIONING STRINGS OF MUSICAL INSTRUMENT OF TYPE PIANO, containing a nut fastened in the socket of the Virbelbank with a screw, axially through the channel for passing and fixing the strings in it, and the 16 1Q element for the string and the design of the template, the template is drawn. so that with. In order to improve the accuracy of adjustment, in the virbelbank, parallel to the axis of the socket, a through hole is made to accommodate the adjustment key, and the nut is installed on the back side of the virbelbank with the ability to interact with the adjustment key. 2. The device POP.1, characterized in that the nut is made in the form of a gear, and the adjustment key has a gear. (L from 00 F

Description

The invention relates to devices for tensioning the strings of a piano-type musical instrument. The aim of the invention is to improve the tuning accuracy. Figure 1 shows the device assembly; figure 2 - view And on: figure 1; on fig.Z - view B in figure 1; on Fig.4 the location of the choir of the strings on virbelbank; FIG. 3 shows a variant of the device in FIG. 6, view B in FIG. 3; in Fig.7, a view of Fig. 3; on Fig - node on fig.Z; figure 9 - node II in fig.Z; Fig. 10 shows a variant of arrangement of string choirs. A piano musical instrument tensioning device contains a nut 2 fixed in the nest 1 of the virbelbank, 3 with a screw 4 having in the axial direction a through channel 3 for passing and fixing the string 6 in it; A string element 7 for string 6, located on the front side of the virbelbank 2, in which a through hole 8 is made parallel to the axis of the socket 1 to accommodate a tuning key 9. A nut 3 is installed on the back side of the virbelbank 2 with the ability to interact with The tuning key 9 is made in the form of a gear wheel, and the tuning key 9 has gear 10. The guide element 7 is made in the form of a roller in which the bearing 11 is pressed with an axis 12, parallel ends of which are executed at each end (not shown), the ends of the axis 12 inserted into groove 13, made in virbelbank 2 on its front side, the width of groove 13 is equal to the distance between the flat faces. The guide element 7 is placed in the groove 14 of the virbelbank 2, the width of which is equal to the width of the element 7. The adjustment key 9 rests on the face of the virbelbank 2 by the protrusion 13, which limits axial movement, through the upper part of the key 9, passes the lever 16 to turn the key 9. Thread screw 4 cut pro-. a longitudinal groove 17. A prismatic key 18 is inserted into the wall of the socket 1, the end of which slides into the groove 17, at the same time as turning the screw 4. The end of page 6 is pressed into the sleeve 19, which is pressed to the end of the screw 4 by a force on the pull of string 6. This the same force presses the end face of the nut 3 to the virbelbank 2, which is made composite and includes a metal plate 20, a metal cup 21 pressed into it and a filler 22 made of composite plastic. An anti-friction washer 23 is located between the nut 3 and the glass 20. Other variants of the proposed device are possible. The string 6 is passed through the screw 4 eccentrically, which is equivalent to the shift of the socket 1 and the hole 8 relative to the line of the string 6 (in Fig. 1 this position is indicated by a dash-dotted line). At. this string 6 is placed on the bottom of the groove 17, machined in the screw 4 to the required depth. This shift allows for the independent removal of the screws 4 of the individual strings 6, in which these screws do not affect the other strings of the choir. A cylindrical recess 24 is made on the back side of the virbelbank, in which a nut 3 in the form of a gear wheel is located on the landing movement. The recess 24 ensures the coaxiality of the nut 3 and screw 4, regardless of the shape of the thread profile. After adjustment, the hole 8 can be plugged with a plastic stopper, reaching the nut 3 and fixing its position. To do this, a gear can be performed at the end of the plug, similar to gear 10 of key 9. The device operates as follows. The tuning of all strings can be performed alternately with one key 9. For tuning, key 9 is inserted into hole 8 of the tunable string and brought to a position in which protrusion 13 abuts against virbelbank 2. Through gear 10, rotation of key 9 is transmitted to gear 3, rotation KOTojJoro results to axial displacement 4 in nest 1 and depending on the direction of rotation jmaaeT or weakens the tension of string 6. After tuning is completed, key 9 is removed from hole 8. When installing a new string, the tension device is installed in the following sequence. The tension of the other two strings of this choir is loosened. The string 6 is passed through the channel 3 of the screw 4. The end of the string 6 is fixed in the sleeve 19 (if the connection of the string 6 with the sleeve

19 is completed in advance, the string is passed through channel 5 in the screw with the other end). The screw 4 with the string 6 is inserted into the socket 1 and oriented so that the key 18 enters the joint; x 17. Then the roller 7 with the axis 12, is installed in the slots 14 and 13. Above A

The screw thread 4 is threaded into the gear 3 thread. The string 6 is threaded into the groove of the roller 7. Insert the key 9 into the hole 8 and, rotating it, pull the string.

The invention povpat tuning accuracy and tool quality.

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Claims (2)

1. DEVICE FOR TENSIONING STRINGS OF A MUSICAL INSTRUMENT OF TYPE FORTEPIANO, comprising a nut with a screw secured in the socket of the vibrbelbank and having a through channel in the axial direction for passing and securing the strings therein and a guiding element for the string located on the front side of the , in order to increase the adjustment accuracy, a through hole was made in the wiredbank parallel to the axis of the socket to accommodate the tuning key in it, and the nut is installed on the back of the wiredbank with the possibility of interaction with the tuning key. 2. The device according to claim 1, characterized in that the nut is made in the form of a gear wheel, and the tuning key has a gear. Fig 1 1 1170493. 2