CN218631347U - Adjusting device for piano pin - Google Patents

Abstract

The utility model provides an adjusting device for piano musical instrument round pin, include barrel casing (1) that is used for carrying out big wrench movement angle modulation to the piano musical instrument round pin, the interior wrench movement spanner device of setting in barrel casing (1), tight screw rod (91) in top between wrench movement spanner device and barrel casing (1) including the setting, through barrel casing (1), realized carrying out primary regulation to the piano musical instrument round pin, through tight screw rod (91) in top, realized connecting the wrench movement spanner device mounted position in barrel casing (1) internally wrench movement, through interior wrench movement spanner device, realized that screw thread promotes to convert angle modulation to, thereby solved and used gear drive to convert angle modulation to reduce the technical problem of angle modulation precision, consequently, the elasticity that has improved the piano round pin rectifies the precision.

Description

Adjusting device for piano pin

Technical Field

The utility model relates to an adjusting device, especially an adjusting device for piano musical instrument round pin.

Background

The piano tuning is realized by adjusting the tightness of the piano pin, so that the accuracy of the piano tone is ensured, the adjusting device for the piano pin is an important piano tool, the tightness of the piano pin is corrected by the rotating angle generated by gear transmission in the existing piano, the control range of the rotating angle generated by gear transmission is large, so that the correction precision of the tightness of the piano pin is influenced,

the utility model carries out effective exploration research on the technical problem of reducing the angle adjustment precision by using the gear transmission to convert the angle adjustment to the angle adjustment through adding the technical characteristic of carrying out small-twisting angle adjustment on the piano pin,

the technical scheme of the invention is made by the technical problems, technical features and technical effects of ZL201820966964.5 and the prior art.

Disclosure of Invention

The object of the utility model is an adjusting device for piano key.

In order to overcome the technical defect, the utility model aims at providing an adjusting device for piano musical instrument round pin, consequently improved the elasticity of piano musical instrument round pin and rectified the precision.

In order to achieve the purpose, the utility model adopts the technical proposal that: the piano key comprises a cylinder shell used for adjusting a large twisting angle of a piano key, an inner twisting wrench device arranged in the cylinder shell, and a jacking screw rod arranged between the inner twisting wrench device and the cylinder shell.

Owing to designed cartridge case, interior wrench movement spanner device and the tight screw rod in top, through the cartridge case, realized carrying out primary regulation to the piano musical instrument round pin, through the tight screw rod in top, realized connecting to interior wrench movement spanner device mounted position in the cartridge case, through interior wrench movement spanner device, realized that the screw thread promotes the conversion to the angle modulation, thereby solved and used the gear drive conversion to reduce the technical problem of angle modulation precision to the angle modulation, consequently improved the elasticity of piano musical instrument round pin and rectified the precision.

The utility model discloses a, according to the mode that the additional carries out little wrench movement angle modulation to piano musical instrument round pin the barrel casing, interior wrench movement spanner device and the tight screw rod in top hookup each other.

The utility model relates to a, according to the mode that the screw promotion was converted to angle modulation interior wrench movement spanner device and cartridge case and the hookup of tight screw rod in top.

The utility model discloses a, interior wrench movement spanner device sets up to including braking wrench, sliding plate, ear bedplate, torque spring, jackshaft, thrust bearing, thrust screw rod and nut seat.

The technical effects of the technical scheme are as follows: the technical characteristics of additionally adjusting the small twisting angle of the piano pin are highlighted, and the application in the technical field of adjusting devices for piano pins is introduced.

The utility model discloses a, be provided with the sliding plate in the shell, be provided with the tight screw rod in top and be provided with ear bedplate and nut seat respectively on the sliding plate between sliding plate and shell, be provided with the braking wrench on the ear bedplate and be provided with the jackshaft between braking wrench and ear bedplate, be provided with torsion spring between jackshaft and braking wrench and ear bedplate, be provided with the thrust screw rod on the nut seat and be provided with thrust bearing between thrust screw rod and braking wrench.

The technical effects of the technical scheme are as follows: through shell, braking spanner, sliding plate, ear bedplate, torque spring, jackshaft, thrust bearing, thrust screw, nut seat and the tight screw rod in top, formed the utility model discloses a basic technical scheme has solved the utility model discloses a technical problem.

The utility model discloses a, be provided with the spanner bayonet socket body respectively and be provided with the slip cell body on the upper and lower inner wall of section of thick bamboo portion at the upper and lower wall left end portion of the section of thick bamboo portion of cartridge case, be provided with in the preceding back wall right part of section of thick bamboo portion and hold the cell body and be provided with the breach body in the preceding back wall left part of section of thick bamboo portion, the slip cell body sets up to hookup with the sliding plate and hold the cell body and set up to hookup with the tight screw rod in top, the preceding back wall lateral surface portion of section of thick bamboo portion sets up to hookup with the tight screw rod contact in top, section of thick bamboo portion sets up to the rectangle siphonozooid and the spanner bayonet socket body sets up to the opening body that corresponds with piano qin round pin, the slip cell body sets up to the U-shaped groove and holds the cell body and set up to the rectangular hole body, the breach body sets up to the horn type opening body.

The technical effects of the technical scheme are as follows: the direct rotation of piano round pin is adjusted the setting to has been realized.

The utility model discloses a, the tight screw rod in top sets up to hexagon bolt and the inner end of the tight screw rod in top sets up to hookup with sliding plate screw thread formula, and the flange body of the tight screw rod in top sets up to hookup with the shell contact.

The technical effects of the technical scheme are as follows: the connection arrangement between the parts is realized by the bolts.

The utility model discloses a, the sliding plate sets up to including first board and second board and the up-down terminal surface portion of first board and second board sets up respectively to the hookup of sinking with the bobbin case, the inner wall front portion of first board and the inner wall front portion of second board set up respectively to the hookup with the ear seat and the inner wall front and back portion of the inner wall front portion of first board and second board set up respectively to the hookup with thrust bearing slidingtype, the inner wall rear portion of first board and the inner wall rear portion of second board set up respectively to the hookup with the nut seat and the back tip of first board and second board sets up respectively to the hookup with top tight screw thread formula, first board and second board set up respectively to the rectangular sheet body and first board and second board set up to being the interval arrangement and distribute.

The utility model discloses a, the ear seat board sets up to including third board and fourth board and the front and back terminal surface portion of third board and fourth board respectively sets up to coupleing with the sliding plate and the upper end terminal surface portion of the lower extreme terminal surface portion of third board and fourth board sets up respectively to coupleing with braking wrench contact formula, third board and fourth board set up respectively to coupleing and the fourth board sets up to coupleing with torsion spring contact formula with jackshaft suit formula and third board respectively, third board and fourth board set up respectively to the rectangle lamellar body and third board and fourth board set up to being the interval arrangement and distribute.

The utility model discloses a, torsion spring set up to with the hookup of jackshaft suit formula and torsion spring's one of them end set up to with the hookup of braking spanner hand contact, torsion spring's wherein another end set up to with the hookup of ear seat board contact.

The utility model designs a, the jackshaft sets up to the H-shaped rod-shaped body and the jackshaft sets up to running through the cluster formula hookup with ear bedplate and torsion spring respectively, and the jackshaft sets up to linking with braking plate hand-operated formula.

The technical effects of the four technical schemes are as follows: the sliding frame is moved to support the arrangement.

The utility model discloses a, the braking spanner sets up to including the wrench portion, middle plate and promotion piece and one of them end of middle plate sets up to coupleing with the wrench portion, wherein another end of middle plate sets up to coupleing and middle plate sets up to coupleing with the jackshaft rotary type with promotion piece, middle plate sets up to coupleing and promotion piece set up to coupleing with thrust bearing contact type with torsion spring contact, the upper and lower terminal surface portion of middle plate sets up to coupleing with ear seat plate contact, wrench portion sets up to the lamellar body that has the opening body that corresponds with piano key and middle plate sets up to rectangular bar-shaped body, it sets up to the block-shaped body that has the outside portion of clinohedral and promotes the clinohedral of piece and set up to coupleing with thrust bearing contact type.

The utility model discloses a, the thrust bearing sets up to including middle seat portion, first side seat portion and second side seat portion and be provided with the promotion opening body at the left end face portion of middle seat portion, the right-hand member face portion at middle seat portion is provided with the holding hole body and the front portion of middle seat portion sets up to coupleing with first side seat portion, the rear portion of middle seat portion sets up to coupleing with second side seat portion and first side seat portion and second side seat portion set up respectively to coupleing with the sliding plate slidingtype, the holding hole body sets up to coupleing and promote the opening body and set up to coupleing with the braking spanner with the thrust screw rod rotary type, middle seat portion, first side seat portion and second side seat portion set up respectively to the rectangular block body and the holding hole body sets up to the type hole body, it sets up to the V-shaped groove body to promote the opening body.

The utility model discloses a, thrust screw rod set up to the light column bolt and be provided with protruding style of calligraphy end in thrust screw rod's inner end, thrust screw rod's protruding style of calligraphy end sets up to hookup and be provided with the cross flower groove body in thrust screw rod's outer end terminal surface portion with the thrust bearing rotary type, thrust screw rod set up to hookup with nut seat screw thread formula.

The utility model discloses a, the nut seat sets up to the platelike body that has the screw hole body and the screw hole body of nut seat sets up to hookup with the thrust screw rod, and the front and back terminal surface portion of nut seat sets up to hookup with the sliding plate.

The technical effects of the four technical schemes are as follows: the piano pin is subjected to tightness micro-angle adjustment through the movement of the screw lever and the threaded hole.

The utility model discloses a, cartridge case and brake spanner, the sliding plate, the ear bedplate, torque spring, the jackshaft, the thrust bearing, the thrust screw rod, nut seat and the tight screw rod in top set up to distribute according to the mode of built-in fine motion wrench movement, the central line of cartridge case, the central line of brake spanner, the central line of ear bedplate, torque spring's central line, the central line of jackshaft, the central line of thrust bearing, the central line of thrust screw rod and the central line setting of nut seat are on same straight line, two nut seats set up between thrust screw rod and sliding plate, two tight screw rods in top set up between sliding plate and cartridge case, first side seat portion sets up to hookup with the second board, second side seat portion sets up to hookup with first board, promote the opening body set up to hookup with promotion piece portion, middle board sets up respectively to hookup with third board and fourth board, third board and fourth set up respectively to hookup with first board and second board, first board and second board set up respectively to hookup with the sliding groove body.

In this technical scheme, the cartridge case is basic part with the tight screw rod in top, also the utility model discloses a necessary technical feature, and brake wrench, sliding plate, ear seat board, torsion spring, jackshaft, thrust bearing, thrust screw rod and nut seat are functional unit, realize the utility model discloses a characteristics of other technological effects, cartridge portion, spanner bayonet socket body, slip cell body, hold the cell body, lack the mouth body, first board, second board, third board, fourth board, board hand, middle board, promote piece portion, middle seat portion, first side seat portion, second side seat portion, hold the hole body and promote the design of these technical features of opening the body, be accord with the patent law and implement the technical feature of rule.

In the technical scheme, the cylinder shell, the internal twisting wrench device and the jacking screw rod which are additionally used for adjusting the small twisting angle of the piano pin are important technical characteristics, the adjusting device for the piano pin has novelty, creativity and practicability in the technical field, and the terms in the technical scheme can be explained and understood by using patent documents in the technical field.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Figure 1 is a schematic view of the present invention,

fig. 2 is a top view of fig. 1.

The wrench comprises a cylinder shell-1, a brake wrench-2, a sliding plate-3, an ear seat plate-4, a torsion spring-5, an intermediate shaft-6, a thrust seat-7, a thrust screw-8, a nut seat-9, a tightening screw-91, a cylinder-11, a wrench bayonet body-12, a sliding groove-13, an accommodating groove-14, a notch body-15, a first plate-31, a second plate-32, a third plate-41, a fourth plate-42, a wrench-21, an intermediate plate-22, a pushing block-23, an intermediate seat-71, a first side seat-75, a second side seat-76, an accommodating hole body-72 and a pushing opening body-74.

Detailed Description

Terms such as "having," "including," and "comprising," as used herein with respect to the present invention, are to be understood as not specifying the presence or addition of one or more other elements or combinations thereof.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other, and unless otherwise stated, the devices and materials used in the following examples are commercially available, and if the processing conditions are not explicitly stated, please refer to the purchased product specification or follow the conventional method in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Fig. 1 is the first embodiment of the present invention, the present embodiment is specifically described with reference to the accompanying drawings, which includes a cylinder shell 1, a wrench 2, a sliding plate 3, an ear plate 4, a torsion spring 5, an intermediate shaft 6, a thrust seat 7, a thrust screw 8, a nut seat 9 and a tightening screw 91, and the sliding plate 3 is disposed in the cylinder shell 1, the tightening screw 91 is disposed between the sliding plate 3 and the cylinder shell 1, and the ear plate 4 and the nut seat 9 are respectively disposed on the sliding plate 3, the wrench 2 is disposed on the ear plate 4, and the intermediate shaft 6 is disposed between the wrench 2 and the ear plate 4, the torsion spring 5 is disposed between the intermediate shaft 6 and the wrench 2 and the ear plate 4, the thrust screw 8 is disposed on the nut seat 9, and the thrust seat 7 is disposed between the thrust screw 8 and the wrench 2.

In the present embodiment, the wrench bayonet bodies 12 are provided on the left end portions of the upper and lower walls of the cylindrical portion 11 of the cylinder case 1 and the slide groove bodies 13 are provided on the upper and lower inner walls of the cylindrical portion 11, respectively, the housing groove body 14 is provided on the right portion of the front and rear walls of the cylindrical portion 11 and the notch body 15 is provided on the left portion of the front and rear walls of the cylindrical portion 11, the slide groove body 13 is provided to be coupled with the slide plate 3 and the housing groove body 14 is provided to be coupled with the tightening screw 91, the outer side surface portion of the front and rear walls of the cylindrical portion 11 is provided to be coupled with the tightening screw 91 in a contact manner, the cylindrical portion 11 is provided to be a rectangular tubular body and the wrench bayonet bodies 12 are provided to be opening bodies corresponding to pins of a piano, the slide groove body 13 is provided to be a U-shaped groove body and the housing groove body 14 is provided to be a long hole-shaped body, and the notch body 15 is provided to be a trumpet-shaped opening body.

Through cartridge case 1, formed the support tie point to sliding plate 3 and top tight screw 91, by sliding groove body 13, realized being connected with sliding plate 3, by section of thick bamboo portion 11 with hold cell body 14, realized with the connection of top tight screw 91, by spanner bayonet socket body 12, realized being connected with the piano key, by breach body 15, realized being used for observing the connection status between spanner bayonet socket body 12 and the piano key, its technical aim at: for use as a component for directly twisting a pin of a piano.

In the present embodiment, the slide plate 3 is configured to include the first plate portion 31 and the second plate portion 32, and the upper and lower end surfaces of the first plate portion 31 and the upper and lower end surfaces of the second plate portion 32 are configured to be coupled with the cartridge case 1 in a sunk manner, the front portion of the inner wall of the first plate portion 31 and the front portion of the inner wall of the second plate portion 32 are configured to be coupled with the ear plate 4 and the front and rear portions of the inner wall of the first plate portion 31 and the front and rear portions of the inner wall of the second plate portion 32 are configured to be coupled with the thrust seat 7 in a sliding manner, respectively, the rear portion of the inner wall of the first plate portion 31 and the rear portion of the inner wall of the second plate portion 32 are configured to be coupled with the nut seat 9 and the rear end portions of the first plate portion 31 and the second plate portion 32 are configured to be coupled with the tightening screw 91 in a threaded manner, the first plate portion 31 and the second plate portion 32 are configured to be rectangular plate portions and the first plate portion 31 and the second plate portion 32 are configured to be distributed in an interval arrangement.

Through the sliding plate 3, formed the support tie point to cartridge case 1, ear seat board 4, thrust bearing 7, nut seat 9 and the tight screw rod 91 in top, by first board 31 and second board 32, realized being connected with cartridge case 1, realized being connected with ear seat board 4, realized being connected with thrust bearing 7, realized being connected with nut seat 9, realized being connected with the tight screw rod 91 in top, its technical aim at: for serving as a support carrier for the ear plate 4, the thrust block 7 and the nut block 9.

In the present embodiment, the ear plate 4 is configured to include the third plate portion 41 and the fourth plate portion 42, and the front and rear end surface portions of the third plate portion 41 and the front and rear end surface portions of the fourth plate portion 42 are respectively configured to be coupled with the slide plate 3 and the lower end surface portion of the third plate portion 41 and the upper end surface portion of the fourth plate portion 42 are respectively configured to be coupled with the brake wrench 2 in a contact manner, the third plate portion 41 and the fourth plate portion 42 are respectively configured to be coupled with the intermediate shaft 6 in a nested manner and the fourth plate portion 42 is configured to be coupled with the torsion spring 5 in a contact manner, the third plate portion 41 and the fourth plate portion 42 are respectively configured as rectangular plate-shaped bodies and the third plate portion 41 and the fourth plate portion 42 are configured to be distributed in a spaced arrangement.

Through the ear plate 4, formed the support tie point to brake wrench 2, sliding plate 3, torsion spring 5 and jackshaft 6, by third board 41 and fourth board 42, realized being connected with brake wrench 2, realized being connected with sliding plate 3, realized being connected with torsion spring 5, realized being connected with jackshaft 6, its technical aim at: for serving as a support carrier for the brake wrench 2.

In the present embodiment, the torsion spring 5 is provided to be coupled with the intermediate shaft 6 in a sleeved manner, one end of the torsion spring 5 is provided to be coupled with the brake wrench 2 in a contact manner, and the other end of the torsion spring 5 is provided to be coupled with the ear plate 4 in a contact manner.

Through torsion spring 5, formed the support tie point to arresting spanner 2, ear seat board 4 and jackshaft 6, by torsion spring 5, realized being connected with arresting spanner 2, realized being connected with ear seat board 4, realized being connected with jackshaft 6, its technical aim at: as one of the components for connection between the brake wrench 2 and the ear seat plate 4.

In the present embodiment, the intermediate shaft 6 is provided as an i-shaped rod-shaped body and the intermediate shaft 6 is provided to be coupled in series with the ear plate 4 and the torsion spring 5, respectively, and the intermediate shaft 6 is provided to be rotatably coupled with the wrench 2.

Through jackshaft 6, formed the support tie point to arresting spanner 2, ear seat board 4 and torsion spring 5, by jackshaft 6, realized being connected with arresting spanner 2, realized being connected with ear seat board 4, realized being connected with torsion spring 5, its technical aim at: and a second part for connecting the brake wrench 2 and the ear seat plate 4.

In the present embodiment, the brake wrench 2 is configured to include a wrench portion 21, an intermediate plate portion 22 and a pusher portion 23 and one end of the intermediate plate portion 22 is configured to be coupled with the wrench portion 21, the other end of the intermediate plate portion 22 is configured to be coupled with the pusher portion 23 and the intermediate plate portion 22 is configured to be rotatably coupled with the intermediate shaft 6, the intermediate plate portion 22 is configured to be coupled in contact with the torsion spring 5 and the pusher portion 23 is configured to be coupled in contact with the thrust bearing 7, the upper and lower end surfaces of the intermediate plate portion 22 are configured to be coupled in contact with the ear bearing plate 4, the wrench portion 21 is configured to be a sheet-like body having an opening body corresponding to a piano pin and the intermediate plate portion 22 is configured to be a rectangular bar-like body, the pusher portion 23 is configured to be a block-like body having an outer side portion of a ramp body and the ramp body of the pusher portion 23 is configured to be coupled in contact with the thrust bearing 7.

Through braking wrench 2, formed the support tie point to ear seat board 4, torsion spring 5, jackshaft 6 and thrust bearing 7, by middle plate portion 22, realized being connected with ear seat board 4, realized being connected with torsion spring 5, realized being connected with jackshaft 6, by promoting piece portion 23, realized being connected with thrust bearing 7, by wrench portion 21, realized being connected with piano key, its technical aim at lies in: as one of the components for micro-twisting the pin of the piano.

In the present embodiment, the thrust bearing 7 is configured to include the middle bearing portion 71, the first side bearing portion 75, and the second side bearing portion 76, and the thrust opening body 74 is provided at the left end surface portion of the middle bearing portion 71, the accommodation hole body 72 is provided at the right end surface portion of the middle bearing portion 71, and the front side surface portion of the middle bearing portion 71 is configured to be coupled to the first side bearing portion 75, the rear side surface portion of the middle bearing portion 71 is configured to be coupled to the second side bearing portion 76, and the first side bearing portion 75 and the second side bearing portion 76 are respectively configured to be slidably coupled to the sliding plate 3, the accommodation hole body 72 is configured to be rotatably coupled to the thrust screw 8, and the thrust opening body 74 is configured to be coupled to the catcher 2, the middle bearing portion 71, the first side bearing portion 75, and the second side bearing portion 76 are respectively configured to be rectangular block-shaped bodies, and the accommodation hole body 72 is configured to be a convex-shaped body, and the thrust opening body 74 is configured to be a V-shaped groove body.

Through thrust bearing 7, has formed the support connection point to brake wrench 2, sliding plate 3 and thrust screw 8, by middle seat portion 71 and promotion opening body 74, has realized being connected with brake wrench 2, by first side seat portion 75 and second side seat portion 76, has realized being connected with sliding plate 3, by middle seat portion 71 and holding hole body 72, has realized being connected with thrust screw 8, and its technical aim lies in: and the second component is used for performing micro-motion twisting on the piano pin.

In the present embodiment, the thrust screw 8 is provided as a light beam bolt and is provided with a lug end at the inner end of the thrust screw 8, the lug end of the thrust screw 8 is provided to be rotatably coupled with the thrust seat 7 and is provided with a cross-grooved body at the outer end surface portion of the thrust screw 8, and the thrust screw 8 is provided to be threadedly coupled with the nut seat 9.

Through thrust screw 8, formed the support tie point to thrust bearing 7 and nut seat 9, by thrust screw 8, realized being connected with thrust bearing 7, realized being connected with nut seat 9, its technical aim at: the third part is used for performing micro-motion twisting on the piano pin.

In the present embodiment, the nut holder 9 is provided as a plate-like body having a threaded hole body and the threaded hole body of the nut holder 9 is provided to be coupled with the thrust screw 8, and the front and rear end surface portions of the nut holder 9 are provided to be coupled with the slide plate 3.

Through nut seat 9, formed the support tie point to sliding plate 3 and thrust screw 8, realized being connected with sliding plate 3 by nut seat 9, realized being connected with thrust screw 8, its technical aim at: and the fourth component is used for performing micro-motion twisting on the piano pin.

In the present embodiment, the tightening screw 91 is provided as a hexagon bolt and the inner end of the tightening screw 91 is screw-coupled to the slide plate 3, and the flange body of the tightening screw 91 is contact-coupled to the cartridge case 1.

Through the tight screw rod 91 in top, formed the support tie point to cartridge case 1 and sliding plate 3, by the tight screw rod 91 in top, realized being connected with cartridge case 1, realized being connected with sliding plate 3, its technical aim at: for the connection between the slide plate 3 and the cartridge housing 1.

In the present embodiment, the cylinder housing 1, the brake wrench 2, the sliding plate 3, the lug plate 4, the torsion spring 5, the intermediate shaft 6, the thrust bearing 7, the thrust screw 8, the nut bearing 9, and the tightening screw 91 are arranged to be distributed in a manner of a built-in micro-motion twist, a center line of the cylinder housing 1, a center line of the brake wrench 2, a center line of the lug plate 4, a center line of the torsion spring 5, a center line of the intermediate shaft 6, a center line of the thrust bearing 7, a center line of the thrust screw 8, and a center line of the nut bearing 9 are arranged on the same straight line, two nut bearings 9 are arranged between the thrust screw 8 and the sliding plate 3, two tightening screws 91 are arranged between the sliding plate 3 and the cylinder housing 1, the first side bearing portion 75 is arranged to be coupled to the second plate portion 32, the second side bearing portion 76 is arranged to be coupled to the first plate portion 31, the thrust bearing opening body 74 is arranged to be coupled to the thrust block portion 23, the intermediate plate portion 22 is arranged to be coupled to the third plate portion 41 and the fourth plate portion 42, the third plate portion 41 and the fourth plate portion 42 are arranged to be coupled to the second plate portion 31 and the second plate portion 32, respectively, and the groove 13.

When the tightness of the piano pin is adjusted, the wrench bayonet body 12 is installed on the piano pin, the piano pin is directly twisted, the large twisting angle adjustment of the piano pin is realized, after the large twisting angle adjustment of the piano pin is completed, the wrench bayonet body 12 is separated from the piano pin, the jacking screw 91 rotates on the first plate part 31 and the second plate part 32 respectively, the flange body of the jacking screw 91 is separated from the cylinder part 11, the jacking screw 91 moves in the accommodating groove body 14, the first plate part 31 and the second plate part 32 are driven to move in the sliding groove body 13, the wrench part 21 extends out from the port part of the cylinder part 11, the jacking screw 91 rotates on the first plate part 31 and the second plate part 32 in opposite directions respectively, the flange body of the jacking screw 91 acts on the cylinder part 11, the screwdriver is placed on the cross-shaped groove body of the thrust screw 8, rotating the thrust screw 8 in the threaded hole of the nut holder 9, placing the outer end of the thrust block 23 on the outer opening of the thrust opening 74, mounting the opening of the wrench 21 on the piano pin, applying pressure to the barrel 11, fixing the barrel 11 to the housing of the piano, placing the screwdriver on the cruciform groove of the thrust screw 8, rotating the thrust screw 8 in the threaded hole of the nut holder 9 in the opposite direction, sliding the first side seat 75 on the second plate 32, sliding the second side seat 76 on the first plate 31, moving the thrust block 23 into the opening 74, pushing the intermediate plate 22 to rotate on the intermediate shaft 6, driving the wrench 21 to rotate, achieving small twist angle adjustment of the piano pin, separating the wrench 21 from the piano pin after small twist angle adjustment of the piano pin is completed, when the degree of tightness of the piano pin is adjusted, the lever handle 21 is returned to the cylinder 11 by separating the jack screw 91 from the cylinder 11, and the flange of the jack screw 91 is made to act on the cylinder 11.

The utility model discloses a second embodiment, according to the mode that the additional carries out little wrench movement angle modulation to the piano musical instrument round pin 1, interior wrench movement spanner device and the tight screw rod 91 of top interconnect.

In this embodiment, the internal twist wrench device is coupled to the barrel housing 1 and the tightening screw 91 in such a manner that the screw pushing is converted into a paired angle adjustment.

In the present embodiment, the internal twisting wrench device is configured to include a braking wrench 2, a sliding plate 3, an ear plate 4, a torsion spring 5, an intermediate shaft 6, a thrust seat 7, a thrust screw 8, and a nut seat 9.

The second embodiment of the present invention is based on the first embodiment.

The utility model has the characteristics of down:

1. owing to designed cartridge case 1, interior wrench movement spanner device and top tight screw rod 91, through cartridge case 1, realized carrying out primary regulation to the piano musical instrument round pin, through top tight screw rod 91, realized connecting to interior wrench movement spanner device mounted position in cartridge case 1, through interior wrench movement spanner device, realized that the screw thread promotes the conversion to the angle modulation, thereby solved and used the gear drive conversion to reduce the technical problem of angle modulation precision to the angle modulation, consequently improved the elasticity of piano musical instrument round pin and rectified the precision.

2. Due to the design of the braking wrench 2, the sliding plate 3, the lug seat plate 4, the torsion spring 5, the intermediate shaft 6, the thrust seat 7, the thrust screw 8 and the nut seat 9, the angular rotation adjustment of the threaded motion is realized.

3. Due to the design of the barrel shell 1, the internal connection of the internal twisting wrench device is realized.

4. Owing to designed and carried out numerical range's injecion to the knot configuration form, made numerical range do the utility model discloses a technical scheme in the technical scheme technical characteristics, not through the formula calculation or through the technical characteristics that the limited number of experiments reachs, the experiment shows that this numerical range's technical characteristics has obtained fine technological effect.

5. Owing to designed the utility model discloses a technical characteristic, in technical characteristic's the effect alone and mutual set, through experimental demonstration, the utility model discloses an each item performance index is 1.7 times at least for current each item performance index, has fine market value through the aassessment.

Still other technical features associated with the cartridge case 1, the internal twist wrench device and the tightening screw 91 for additionally adjusting the small twist angle of the pin of the piano are all embodiments of the present invention, and the technical features of the above-mentioned embodiments can be arbitrarily combined, and in order to meet the requirements of patent laws, patent practice rules and examination guidelines, all possible combinations of the technical features of the above-mentioned embodiments will not be described again.

Consequently in the adjusting device technical field who is used for the piano musical instrument round pin, all include the technical content that includes the tight screw rod 91 in top that is used for carrying out the big wrench movement angle modulation to the piano musical instrument round pin 1, sets up wrench movement device in the barrel casing 1, sets up between wrench movement device and the barrel casing 1 including all be in the protection scope of the utility model.

Claims (10)

1. The utility model provides an adjusting device for piano musical instrument round pin, characterized by: comprises a cylinder shell (1) used for adjusting the large twisting angle of a piano pin, an internal twisting wrench device arranged in the cylinder shell (1), and a jacking screw rod (91) arranged between the internal twisting wrench device and the cylinder shell (1).

2. The adjusting device for piano pins of claim 1, wherein: the barrel shell (1), the internal twist wrench device and the jacking screw rod (91) are connected with each other in a mode of additionally adjusting the small twist angle of the piano pin.

3. The adjusting apparatus for a piano pin according to claim 2, wherein: the internal twisting wrench device is connected with the cylinder shell (1) and the jacking screw rod (91) in a mode of converting screw thread pushing into paired angle adjustment.

4. The adjusting device for piano pins of claim 1, wherein: the internal twisting wrench device comprises a brake wrench (2), a sliding plate (3), an ear seat plate (4), a torsion spring (5), an intermediate shaft (6), a thrust seat (7), a thrust screw (8) and a nut seat (9).

5. The adjusting apparatus for a piano pin according to claim 4, wherein: the cylinder shell is characterized in that a sliding plate (3) is arranged in the cylinder shell (1), a jacking screw rod (91) is arranged between the sliding plate (3) and the cylinder shell (1), an ear seat plate (4) and a nut seat (9) are respectively arranged on the sliding plate (3), a brake wrench (2) is arranged on the ear seat plate (4), an intermediate shaft (6) is arranged between the brake wrench (2) and the ear seat plate (4), a torsion spring (5) is arranged between the intermediate shaft (6) and the brake wrench (2) and between the ear seat plate (4), a thrust screw rod (8) is arranged on the nut seat (9), and a thrust seat (7) is arranged between the thrust screw rod (8) and the brake wrench (2).

6. The adjusting device for piano pins of claim 5, wherein: the left end parts of the upper wall and the lower wall of a cylinder part (11) of a cylinder shell (1) are respectively provided with a wrench bayonet body (12), the upper inner wall and the lower inner wall of the cylinder part (11) are respectively provided with a sliding groove body (13), the right part of the front wall and the rear wall of the cylinder part (11) is provided with an accommodating groove body (14), the left part of the front wall and the rear wall of the cylinder part (11) is provided with a notch body (15), the sliding groove body (13) is connected with a sliding plate (3) and the accommodating groove body (14) is connected with a puller screw (91), the outer side surface part of the front wall and the rear wall of the cylinder part (11) is connected with the puller screw (91) in a contact mode, the cylinder part (11) is arranged to be a rectangular pipe body, the wrench bayonet body (12) is arranged to be an opening body corresponding to a piano pin, the sliding groove body (13) is arranged to be a U-shaped groove body, the accommodating groove body (14) is arranged to be a long-bar-shaped body, and the notch body (15) is arranged to be a horn-shaped opening body.

7. The adjusting device for piano pins of claim 5, wherein: the jacking screw rod (91) is a hexagon bolt, the inner end of the jacking screw rod (91) is in threaded connection with the sliding plate (3), and the flange body of the jacking screw rod (91) is in contact connection with the cylinder shell (1).

8. The adjusting apparatus for a piano pin according to claim 5, wherein: the sliding plate (3) is provided with a first plate part (31) and a second plate part (32), the upper end surface part and the lower end surface part of the first plate part (31) and the upper end surface part and the lower end surface part of the second plate part (32) are respectively provided to be connected with the cylinder shell (1) in a sinking mode, the front part of the inner wall of the first plate part (31) and the front part and the rear part of the inner wall of the second plate part (32) are respectively provided to be connected with the ear seat plate (4) and the front part and the rear part of the inner wall of the first plate part (31) and the front part and the rear part of the inner wall of the second plate part (32) are respectively provided to be connected with the nut seat (9) in a sliding mode, the rear end part of the first plate part (31) and the rear end part of the second plate part (32) are respectively provided to be in threaded connection with the tightening screw rod (91), the first plate part (31) and the second plate part (32) are respectively provided to be rectangular sheets and the first plate part (31) and the second plate part (32) are arranged to be distributed in an interval mode,

or, the ear seat plate (4) is provided with a third plate part (41) and a fourth plate part (42), the front end surface part and the rear end surface part of the third plate part (41) and the front end surface part and the rear end surface part of the fourth plate part (42) are respectively connected with the sliding plate (3), the lower end surface part of the third plate part (41) and the upper end surface part of the fourth plate part (42) are respectively connected with the brake spanner (2) in a contact way, the third plate part (41) and the fourth plate part (42) are respectively connected with the middle shaft (6) in a sleeved way, the fourth plate part (42) is connected with the torsion spring (5) in a contact way, the third plate part (41) and the fourth plate part (42) are respectively provided with rectangular platy bodies, and the third plate part (41) and the fourth plate part (42) are arranged to be distributed in an interval way,

or the torsion spring (5) is connected with the intermediate shaft (6) in a sleeved mode, one end of the torsion spring (5) is connected with the brake wrench (2) in a contact mode, the other end of the torsion spring (5) is connected with the ear seat plate (4) in a contact mode,

or the intermediate shaft (6) is arranged into an I-shaped rod body, the intermediate shaft (6) is respectively arranged to be connected with the ear seat plate (4) and the torsion spring (5) in a penetrating and serial mode, and the intermediate shaft (6) is arranged to be connected with the brake wrench (2) in a rotating mode.

9. The adjusting device for piano pins of claim 5, wherein: the brake spanner (2) is arranged to include a spanner portion (21), an intermediate plate portion (22) and a pushing block portion (23) and one end of the intermediate plate portion (22) is arranged to be coupled with the spanner portion (21), the other end of the intermediate plate portion (22) is arranged to be coupled with the pushing block portion (23) and the intermediate plate portion (22) is arranged to be rotatably coupled with an intermediate shaft (6), the intermediate plate portion (22) is arranged to be coupled with a torsion spring (5) in a contact manner and the pushing block portion (23) is arranged to be coupled with a thrust seat (7) in a contact manner, upper and lower end surface portions of the intermediate plate portion (22) are arranged to be coupled with an ear seat plate (4) in a contact manner, the spanner portion (21) is arranged to be a plate-shaped body having an opening body corresponding to a piano pin and the intermediate plate portion (22) is arranged to be a rectangular strip-shaped body, the pushing block portion (23) is arranged to be a block-shaped body having an outer side portion of an inclined body and the pushing block portion (23) is arranged to be coupled with the thrust seat (7) in a contact manner,

or, the thrust bearing (7) is set to include a middle bearing part (71), a first side bearing part (75) and a second side bearing part (76) and is provided with a push opening body (74) at a left end face part of the middle bearing part (71), an accommodation hole body (72) is provided at a right end face part of the middle bearing part (71) and a front side face part of the middle bearing part (71) is set to be coupled with the first side bearing part (75), a rear side face part of the middle bearing part (71) is set to be coupled with the second side bearing part (76) and the first side bearing part (75) and the second side bearing part (76) are respectively set to be slidably coupled with the sliding plate (3), the accommodation hole body (72) is set to be rotatably coupled with the thrust screw (8) and the push opening body (74) is set to be coupled with the brake shoe hand (2), the middle bearing part (71), the first side bearing part (75) and the second side bearing part (76) are respectively set to be rectangular blocks and the accommodation hole body (72) is set to be a convex-shaped body, the push opening body (74) is set to be a V-shaped groove,

or the thrust screw rod (8) is set as a light column bolt, the inner end of the thrust screw rod (8) is provided with a convex end head, the convex end head of the thrust screw rod (8) is set to be rotationally connected with the thrust seat (7), the end surface part of the outer end of the thrust screw rod (8) is provided with a cross-shaped groove body, the thrust screw rod (8) is set to be in threaded connection with the nut seat (9),

alternatively, the nut holder (9) is a plate-like body having a threaded hole, the threaded hole of the nut holder (9) is coupled to the thrust screw (8), and the front and rear end surfaces of the nut holder (9) are coupled to the slide plate (3).

10. The adjusting apparatus for a piano pin according to any one of claims 1 to 9, wherein: the cylinder shell (1) and the brake wrench (2), the sliding plate (3), the ear seat plate (4), the torsion spring (5), the intermediate shaft (6), the thrust seat (7), the thrust screw (8), the nut seat (9) and the jacking screw (91) are arranged to be distributed according to a built-in micro-twisting mode, the center line of the cylinder shell (1), the center line of the brake wrench (2), the center line of the ear seat plate (4), the center line of the torsion spring (5), the center line of the intermediate shaft (6), the center line of the thrust seat (7), the center line of the thrust screw (8) and the center line of the nut seat (9) are arranged on the same straight line, the two nut seats (9) are arranged between the thrust screw (8) and the sliding plate (3), the two jacking screws (91) are arranged between the sliding plate (3) and the cylinder shell (1), the first side seat part (75) is arranged to be connected with the second plate part (32), the second side seat part (76) is arranged to be connected with the first plate part (31), the thrust opening block (74) is arranged to be connected with the intermediate plate part (23), the fourth plate part (41) and the third plate part (41) are arranged to be connected with the fourth plate part (41), the first plate portion (31) and the second plate portion (32) are respectively provided so as to be linked with the slide groove body (13).

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