CN220357789U

CN220357789U - Universal wrench for tuning and calibrating piano

Info

Publication number: CN220357789U
Application number: CN202321208571.5U
Authority: CN
Inventors: 张中梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2024-01-16
Anticipated expiration: 2033-05-18

Abstract

The utility model relates to the technical field of piano maintenance, and particularly discloses an universal wrench for tuning and calibrating a piano. The device comprises a device main body, wherein the device main body comprises a holding rod, and one end of the holding rod is provided with a mounting column; the mounting column is inwards sunken away from one end face of the holding rod to form a clamping groove for the tuning nail to extend in; an adjusting mechanism is arranged between the holding rod and the one end of the mounting column and is used for changing the angle between the holding rod and the mounting column. The tuning device is convenient for adjusting staff to tune different types of pianos.

Description

Universal wrench for tuning and calibrating piano

Technical Field

The utility model relates to the technical field of piano maintenance, in particular to an universal wrench for tuning and calibrating a piano.

Background

The pronunciation of piano is sent through the hammer striking string, and the string is fixed in the piano body through two tuning nails, makes string tighten or loosen through rotating tuning nail to tuning the piano.

At present, a tuning wrench is used when a piano is tuned, the tuning wrench comprises a grab handle, one end of the grab handle is connected with a punch, and an included angle between the punch and the grab handle is fixed between 90 and 100; the punch is used for being sleeved on the tuning nail, and then the grab handle is pushed to drive the punch to rotate, so that the tuning nail is rotated, and the string tightening degree is adjusted.

The pianos are divided into two types, one is a grand piano, the body is large and flat, and the hammer is used for knocking strings from top to bottom; the other is an upright piano, the piano is smaller, and the hammer is used for vertically knocking strings; when the upright piano is adjusted, a cover plate at the front end of the upright piano can be opened, and then the tuning nail is rotated by the tuning wrench to adjust; when adjusting grand piano, because the body is great, inconvenient dismantlement, so support the apron through branch, later stretch into the tuning spanner and rotate tuning nail and adjust in the body.

But now, most tuning spanner's grab handle and drift between be fixed connection to make the inconvenient regulation of angle between drift and the grab handle, thereby make tuning spanner stretch into behind the grand piano body, easy quilt piano internals blockked when adjusting personnel promote tuning spanner grab handle, thereby be inconvenient for adjusting personnel to rotate tuning nail.

Disclosure of Invention

The utility model provides an universal wrench for tuning and calibrating a piano, which can overcome certain or certain defects in the prior art.

In order to solve the technical problems, the utility model is solved by the following technical scheme:

a universal wrench for tuning and calibrating a piano comprises a device main body, wherein the device main body comprises a holding rod, and one end of the holding rod is provided with a mounting column; the mounting column is inwards sunken away from one end face of the holding rod to form a clamping groove for the tuning nail to extend in; an adjusting mechanism is arranged between the holding rod and the one end of the mounting column and is used for changing the angle between the holding rod and the mounting column.

By the aid of the piano string tension adjusting device, an adjusting person can conveniently adjust the degree of tightness of strings of grand pianos.

Preferably, the adjusting mechanism comprises a mounting seat, the mounting seat comprises a first circular plate connected with one end of the holding rod, and two connecting plates which are parallel to each other and perpendicular to the first circular plate are arranged at one end of the first circular plate, which is far away from the holding rod;

the side walls of one end of the two connecting plates far away from the first circular plate are outwards expanded to form a second circular plate; a third circular plate which is arranged in parallel with the second circular plate is arranged between the two second circular plates, and rotating columns penetrating through the second circular plates are arranged at the two end surfaces of the third circular plate; a first through hole for the rotary column to pass through is arranged at the center of the second circular plate; the end face of the third circular plate is provided with a plurality of second through holes distributed along the circumferential direction of the rotating column; a fixing component is arranged in the second through hole; the fixing component is used for limiting the third circular plate to rotate;

the connecting plate, the second circular plate and the first circular plate jointly form a first mounting groove; and a connecting column extending out of the first mounting groove is arranged at the side wall of the third circular plate and is connected with the mounting column.

Through the utility model, the third circular plate is prevented from rotating, so that an adjusting person can conveniently and stably install the column and align the tuning nail.

Preferably, a blind hole which is arranged corresponding to the second through hole is formed in the position, close to the end face of the third circular plate, of the second circular plate; the fixing assembly comprises two limiting columns, a first spring is arranged between the two limiting columns, and a first arc-shaped surface is arranged at one end, far away from the first spring, of each of the two limiting columns; the first spring is used for pushing the first arc-shaped surface on the limiting column to extend into the blind hole.

According to the utility model, an adjusting person can conveniently fix the third circular plate.

Preferably, one end face of the holding rod, which is close to the first circular plate, is inwards sunken to form a limiting groove, and a limiting block which is inserted into the limiting groove is arranged at one end face of the first circular plate.

According to the utility model, an installer can conveniently connect the mounting seat with the holding rod, and the installation is convenient.

Preferably, two second mounting grooves are formed in the side wall of the holding rod and symmetrically arranged along the central axis of the holding rod, and the second mounting grooves are formed in the length direction of the holding rod; and a mounting rod is arranged in the second mounting groove, and one end of the mounting rod is hinged with the side wall of the second mounting groove.

By the aid of the utility model, an adjuster can conveniently rotate the holding rod when the installation post and the holding rod are 180 degrees.

Preferably, the center of the end face of the limiting groove bottom is recessed inwards to form a third mounting groove; the holding rod is internally provided with an installation cavity arranged along the length direction of the holding rod, and the installation cavity is respectively communicated with the third installation groove and the second installation groove; a sliding rod is arranged in the mounting cavity, and a third through hole for the sliding rod to pass through and extend into the first mounting groove is arranged at the limit block;

the side wall of the sliding rod, which is positioned in the third mounting groove, is provided with a flange matched with the side wall of the third mounting groove; a second spring which is arranged in the third mounting groove and used for enabling the sliding rod to extend into the first mounting groove; a gear is arranged at the hinged position of the mounting rod, and a rack matched with the gear is arranged at the side wall of the sliding rod; the end face of the third circular plate, which is far away from the mounting column, is provided with a pushing column for pushing the sliding rod.

The utility model is convenient for accommodating the mounting rod.

Preferably, a second arc-shaped surface is arranged at one end of the pushing column far away from the third circular plate, and a third arc-shaped surface matched with the second arc-shaped surface is arranged at one end of the sliding rod extending into the first mounting groove.

According to the utility model, the sliding rod is prevented from blocking the pushing column to rotate, so that the pushing column can conveniently squeeze the sliding rod.

Preferably, the center of the second arc surface is recessed inwards to form a groove.

By the aid of the sliding rod, stability between the pushing column and the sliding rod is improved better.

Drawings

Fig. 1 is a schematic view of the device body in embodiment 1.

Fig. 2 is a schematic view of the mounting base in embodiment 1.

Fig. 3 is a schematic view of a stopper in embodiment 1.

Fig. 4 is a schematic view of a third circular plate in embodiment 1.

Fig. 5 is a schematic view of the grip in embodiment 1.

Fig. 6 is a schematic view of a slide bar in embodiment 1.

Fig. 7 is a cross-sectional view of the device body in embodiment 1.

Fig. 8 is a schematic view of the first spring in embodiment 1.

Fig. 9 is a schematic view of the fixing assembly in embodiment 1.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples. It is to be understood that the examples are illustrative of the present utility model and are not intended to be limiting.

Example 1

As shown in fig. 1 to 9, the present embodiment provides a universal wrench capable of being used for tuning calibration of a piano, which comprises a device main body 100, wherein the device main body 100 comprises a grip 110, and a mounting post 150 is arranged at one end of the grip 110; the mounting post 150 is recessed inward toward the end of the grip 110 to form a slot 430 into which the tuning pin extends; an adjustment mechanism is provided between the grip 110 and the end of the mounting post 150 for changing the angle between the grip 110 and the mounting post 150.

Through the embodiment, when the universal wrench for tuning and calibrating the piano is used for adjusting the upright piano, the mounting column 150 is adjusted to be perpendicular to the holding rod 110 through the adjusting mechanism, then the mounting column 150 is sleeved on the tuning nail, the tuning nail stretches into the clamping groove 430, then the holding rod 110 is pushed, the mounting column 150 is rotated, the tuning nail is driven to rotate, and therefore the string tightening degree is adjusted, and therefore adjustment of the upright piano by an adjusting person is facilitated; when adjustment personnel need adjust grand piano, accessible adjustment mechanism makes the contained angle increase between erection column 150 and the holding rod 110 to make holding rod 110 stretch out the grand piano body, later promote holding rod 110, rotate tuning nail, thereby the string elasticity degree of adjustment personnel's regulation grand piano has been made things convenient for to the preferred.

In this embodiment, the adjusting mechanism includes a mounting base 120, the mounting base 120 includes a first circular plate 160 connected to the end of the holding rod 110, and two connecting plates 170 parallel to each other and perpendicular to the first circular plate 160 are disposed at the end of the first circular plate 160 away from the holding rod 110;

the side walls of one end of the two connecting plates 170 far away from the first circular plate 160 are outwards expanded to form a second circular plate 130; a third circular plate 410 arranged in parallel with the second circular plate 130 is arranged between the two second circular plates 130, and rotating columns 230 penetrating through the second circular plate 130 are arranged at two end surfaces of the third circular plate 410; a first through hole 320 through which the rotation column 230 passes is provided at the center of the second circular plate 130; a plurality of second through holes 920 distributed along the circumferential direction of the rotating column 230 are arranged at the end surface of the third circular plate 410; a fixing component is arranged in the second through hole 920; the fixing assembly is used for limiting the rotation of the third circular plate 410;

the connection plate 170, the second circular plate 130, and the first circular plate 160 together constitute a first installation groove 260; the third circular plate 410 has a connection post 140 extending from the first mounting groove 260 at a side wall thereof, and the connection post 140 is connected to the mounting post 150.

Through the embodiment, the adjusting personnel drives the mounting column 150 to move by rotating the third circular plate 410, so that the angle between the mounting column 150 and the holding rod 110 is adjusted, the angle between the holding rod 110 and the mounting column 150 is changed according to the tuning needs of different pianos, and the adjusting personnel can rotate the tuning nail conveniently; after the third circular plate 410 is rotated, it is fixed by the fixing assembly, thereby preventing the third circular plate 410 from rotating, facilitating the adjustment personnel to stabilize the mounting post 150, aligning the tuning pin.

In this embodiment, a blind hole 310 corresponding to the second through hole 920 is disposed on the end surface of the second circular plate 130 near the third circular plate 410; the fixing assembly comprises two limiting columns 420, a first spring 910 is arranged between the two limiting columns 420, and a first arc-shaped surface 421 is arranged at one end, far away from the first spring 910, of each of the two limiting columns 420; the first spring 910 is used to push the first arc surface 421 of the limiting post 420 to extend into the blind hole 310.

In this embodiment, when the adjuster rotates the third circular plate 410, the third circular plate 410 rotates to drive the first arc surface 421 on the limiting post 420 to squeeze the side wall of the blind hole 310, so that the limiting post 420 retracts into the second through hole 920 to squeeze the first spring 910; when the third circular plate 410 drives the limit post 420 to move to the opening of the other blind hole 310, the first spring 910 pushes the limit post 420 into the blind hole 310, so as to prevent the third circular plate 410 from rotating, thereby being convenient for an adjuster to fix the third circular plate 410.

In this embodiment, the end of the holding rod 110, which is close to the first circular plate 160, is recessed inward to form a limiting groove 510, and a limiting block 210 inserted into the limiting groove 510 is disposed at one end of the first circular plate 160.

Through this embodiment, installer inserts stopper 210 in spacing groove 510, interference fit between stopper 210 and the spacing groove 510 to make things convenient for the installer to be connected mount pad 120 and holding rod 110, easy to assemble.

In this embodiment, two second mounting grooves 180 are symmetrically disposed along the central axis of the grip 110 at the side wall of the grip 110, and the second mounting grooves 180 are disposed along the length direction of the grip 110; a mounting rod 190 is arranged in the second mounting groove 180, and one end of the mounting rod 190 is hinged with the side wall of the second mounting groove 180.

Through this embodiment, when the adjuster pushes the mounting post 150 to 180 degrees with the holding rod 110, the adjuster rotates the mounting rod 190 out of the second mounting groove 180, and then pushes the mounting rod 190 to rotate the holding rod 110, thereby facilitating the adjuster to rotate the holding rod 110 when 180 degrees are formed between the mounting post 150 and the holding rod 110.

In this embodiment, the center of the bottom end surface of the limiting groove 510 is recessed inward to form a third mounting groove 520; the holding rod 110 is internally provided with a mounting cavity 530 arranged along the length direction of the holding rod 110, and the mounting cavity 530 is respectively communicated with the third mounting groove 520 and the second mounting groove 180; the installation cavity 530 is internally provided with a sliding rod 610, and the limiting block 210 is provided with a third through hole 220 for the sliding rod 610 to pass through and extend into the first installation groove 260;

the sliding rod 610 is provided with a flange 620 matching with the side wall of the third mounting groove 520 at the side wall of the third mounting groove 520; a second spring 810 provided in the third mounting groove 520 to push the sliding rod 610 into the first mounting groove 260; a gear 710 is arranged at the hinge joint of the mounting rod 190, and a rack 640 matched with the gear 710 is arranged at the side wall of the sliding rod 610; the third circular plate 410 is provided at an end surface thereof remote from the mounting column 150 with a push column 240 for pushing the slide rod 610.

Through the present embodiment, after the adjuster rotates the third circular plate 410 to drive the pushing post 240 to enter the first mounting groove 260, the pushing post 240 pushes the sliding rod 610 to move upwards, so that the rack 640 drives the gear 710 to rotate, and the mounting rod 190 is rotated out of the second mounting groove 180; when the pushing post 240 rotates out of the first mounting groove 260, the second spring 810 pushes the flange 620 to move the sliding rod 610 downward, so that one end of the sliding rod 610 is pushed into the first mounting groove 260, and the sliding rod 610 moves downward to drive the gear 710 to rotate, so that the mounting rod 190 is rotated back into the second mounting groove 180, thereby facilitating the storage of the mounting rod 190.

In this embodiment, the end of the pushing post 240 away from the third circular plate 410 is provided with a second arc surface 241, and the end of the sliding rod 610 extending into the first mounting groove 260 is provided with a third arc surface 630 matching with the second arc surface 241.

Through the present embodiment, after the pushing post 240 enters the first mounting groove 260, the second arc surface 241 on the pushing post 240 presses the third arc surface 630 on the sliding rod 610 and slides along the third arc surface 630, so that the sliding rod 610 is prevented from blocking the pushing post 240 from rotating, and the pushing post 240 is convenient to press the sliding rod 610.

In this embodiment, the center of the second arcuate surface 241 is recessed inward to form a recess 250.

In this embodiment, when the angle between the pushing post 240 and the grip 110 is 180 degrees during the process of sliding one end of the pushing post 240 along the third arc surface 630 on the sliding rod 610, one end of the sliding rod 610 is clamped into the groove 250; thereby better improving stability between the push post 240 and the slide rod 610.

It is to be understood that, based on one or several embodiments provided herein, those skilled in the art may combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments, which do not exceed the protection scope of the present application.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the examples are merely illustrative of embodiments of the utility model and the actual construction is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims

1. A universal wrench for piano tuning calibration, its characterized in that: comprises a device main body (100), wherein the device main body (100) comprises a holding rod (110), and one end of the holding rod (110) is provided with a mounting column (150); the end surface of the mounting column (150) far away from the holding rod (110) is inwards recessed to form a clamping groove (430) for the tuning pin to extend in; an adjusting mechanism is arranged between the holding rod (110) and the one end of the mounting column (150), and the adjusting mechanism is used for changing the angle between the holding rod (110) and the mounting column (150).

2. The universal wrench for tuning calibration of pianos of claim 1, wherein: the adjusting mechanism comprises an installation seat (120), the installation seat (120) comprises a first circular plate (160) connected with one end of the holding rod (110), and two connecting plates (170) which are parallel to each other and perpendicular to the first circular plate (160) are arranged at one end of the first circular plate (160) away from the holding rod (110);

the side walls of one end of the two connecting plates (170) far away from the first circular plate (160) are outwards expanded to form a second circular plate (130); a third circular plate (410) which is arranged in parallel with the second circular plate (130) is arranged between the two second circular plates (130), and rotating columns (230) which penetrate through the second circular plate (130) are arranged at the two end surfaces of the third circular plate (410); a first through hole (320) for the rotary column (230) to pass through is arranged at the center of the second circular plate (130); a plurality of second through holes (920) distributed along the circumferential direction of the rotating column (230) are arranged at the end surface of the third circular plate (410); a fixed component is arranged in the second through hole (920); the fixing component is used for limiting the rotation of the third circular plate (410);

the connecting plate (170), the second circular plate (130) and the first circular plate (160) jointly form a first mounting groove (260); and a connecting column (140) extending out of the first mounting groove (260) is arranged at the side wall of the third circular plate (410), and the connecting column (140) is connected with the mounting column (150).

3. The universal wrench for tuning calibration of pianos of claim 1, wherein: a blind hole (310) which is arranged corresponding to the second through hole (920) is arranged at the end surface of the second circular plate (130) close to the third circular plate (410); the fixing assembly comprises two limiting columns (420), a first spring (910) is arranged between the two limiting columns (420), and a first arc-shaped surface (421) is arranged at one end, far away from the first spring (910), of each of the two limiting columns (420); the first spring (910) is used for pushing the first arc-shaped surface (421) on the limit post (420) to extend into the blind hole (310).

4. The universal wrench for tuning calibration of pianos of claim 2, wherein: the holding rod (110) is close to one end face of the first circular plate (160) and inwards sunken to form a limiting groove (510), and a limiting block (210) inserted into the limiting groove (510) is arranged at one end face of the first circular plate (160).

5. The universal wrench for tuning calibration of pianos of claim 2, wherein: two second mounting grooves (180) which are symmetrically arranged along the central axis of the holding rod (110) are formed in the side wall of the holding rod (110), and the second mounting grooves (180) are arranged along the length direction of the holding rod (110); and a mounting rod (190) is arranged in the second mounting groove (180), and one end of the mounting rod (190) is hinged with the side wall of the second mounting groove (180).

6. The universal wrench for tuning calibration of pianos of claim 4 or 5, wherein: a third mounting groove (520) is formed by inwards sinking the center of the bottom end surface of the limit groove (510); an installation cavity (530) is arranged in the holding rod (110) along the length direction of the holding rod (110), and the installation cavity (530) is respectively communicated with the third installation groove (520) and the second installation groove (180); a sliding rod (610) is arranged in the mounting cavity (530), and a third through hole (220) for the sliding rod (610) to pass through and extend into the first mounting groove (260) is arranged at the limit block (210);

a flange (620) matched with the side wall of the third mounting groove (520) is arranged at the side wall of the sliding rod (610) in the third mounting groove (520); a second spring (810) which is arranged in the third mounting groove (520) and used for pushing the flange (620) to enable the sliding rod (610) to extend into the first mounting groove (260); a gear (710) is arranged at the hinge position of the mounting rod (190), and a rack (640) matched with the gear (710) is arranged at the side wall of the sliding rod (610); a pushing column (240) for pushing the sliding rod (610) is arranged at the end surface of the third circular plate (410) far away from the mounting column (150).

7. The universal wrench for tuning calibration of pianos of claim 6, wherein: one end of the pushing column (240) far away from the third circular plate (410) is provided with a second arc-shaped surface (241), and one end of the sliding rod (610) extending into the first mounting groove (260) is provided with a third arc-shaped surface (630) matched with the second arc-shaped surface (241).

8. The universal wrench for tuning calibration of pianos of claim 7, wherein: the center of the second arc-shaped surface (241) is recessed inwards to form a groove (250).