CN204375400U - Guitar string erector - Google Patents

Abstract

The utility model discloses a kind of guitar string erector, primarily of support 4, number of turns chi 5 and string hook 6 composition, number of turns chi is fixed on rack beam; Chi bar 502 one end of number of turns chi is fixed on plane scroll spring 507, and scroll spring center is fixed on center unmoving axle 508, and it is contrary with number of turns chi bar pull-out direction that scroll spring returns force direction, by the Hui Li of scroll spring 507 for string provides tension force; The chi bar outlet of number of turns chi is provided with the arrestment mechanism blocking chi bar; String hook 6 is arranged on the movable end of number of turns chi chi bar.

Description

Guitar string erector

Technical field

The utility model relates to plucked instrument utility appliance, and especially guitar string erecting equipment manufactures field.

Background technology

Guitar accessory is varied in the market, has the plectrum of manipulating the strings, the capo tasto of changing voice, and rotates the winder of string button, organ stop determining accuracy in pitch etc.When changing the process of guitar string, with a hand by vertical for guitar string pull-up to qin case one segment distance, the object done like this has be allow string in the process that be tightened up have some tension at two: one, make string one end can tight twist in peg; Two is for string reserves certain length, thus can be wrapped in peg.Must suitable control by the dynamics of the height of string pull-up and pulling could be firm, attractive in appearance change a string, this needs rich experience.The utility model designs a guitar string and changes servicing unit, can according to different guitar model, string number, accurately by the pull-up of guitar string to proper height, and on string, apply stable pulling force, realize the replacing of string conveniently, reliable, attractive in appearance.

Utility model content

The problem of solution of the present utility model is: 1. ensure that the string of scroll head end is wrapped in peg with the number of turns determined, arrive the object of neat appearance; 2., when string button tension string, make that string has some tension all the time, allow string firmly be wrapped in peg.

The technological means that the utility model reaches its object is:

Guitar string erector, primarily of support 4, number of turns chi 5 and string hook 6 composition, number of turns chi 5 is fixed on rack beam gathering sill 401; Chi bar 502 one end of number of turns chi is fixed on cylinder 501 outside surface, drum inner surface and one coils plane scroll spring 507 to be fixed, scroll spring center is fixed on center unmoving axle 508, it is contrary with number of turns chi bar pull-out direction that scroll spring returns force direction, by the Hui Li of scroll spring 507 for string provides tension force; The chi bar outlet of number of turns chi is provided with the arrestment mechanism blocking chi bar; String hook 6 is arranged on the movable end of number of turns chi chi bar.

Described number of turns chi chi bar 502 is provided with number of turns scale.

Adopt structure as above, when guitar string is installed, as shown in Figure 1, support 4 is placed on qin case panel 1, and support 4 leans against location on string bridge 3 along the position in string direction by support one end.With cord 2 by support and qin case is fastening is held together.Pulled out by number of turns chi bar 502, according to the string number of guitar model, string and wish that the number of turns that string is wound around peg selects the scale of number of turns chi, selected certain number of turns scale, promotes locking key 506 and pins current scale.String hook 6 is fixed on below number of turns chi, directly over the string that mobile number of turns chi makes hook be positioned at will to change.Tangle string 7 with hook, string is wound in peg 8, unclamp the locking key 506 on number of turns chi, rotate string button 9 until strained by string.After complete, hook is taken off from string.

The utility model can according to different guitar model, string number, accurately by the pull-up of guitar string to proper height, and on string, apply stable pulling force, realize the replacing of string conveniently, reliable, attractive in appearance.

Accompanying drawing explanation

Fig. 1 is the schematic diagram after the utility model installs;

Fig. 2 is the utility model number of turns chi (on-position) organigram;

Fig. 3 is the utility model number of turns chi (non-brake state) organigram;

Fig. 4 is that the utility model number of turns chi scale calculates schematic diagram;

Fig. 5 is the schematic diagram that the utility model number of turns chi is installed;

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is set forth further.

The core component of string erector is number of turns chi 5.Number of turns chi is not only string 7 and provides tension force; And string is wound around the number of turns of peg 8 by selecting the scale of number of turns chi to ensure.The concrete technical scheme of number of turns chi is as follows:

Composition graphs 1, Fig. 2 and Fig. 3 can see, number of turns chi bar 502 one end with a scale is fixed.Then cylinder 501 outside surface is wrapped in.Drum inner surface and one coils plane scroll spring 507 to be fixed, and scroll spring center is fixed on center unmoving axle 508, and it is contrary with number of turns chi bar pull-out direction that scroll spring returns force direction.When string button 9 rotates and pulls string, chi bar 502 is drawn out, by the Hui Li of scroll spring 507 for string provides tension force.

Chi bar scale mark scheme is as follows:

Distance l on certain model guitar between capotasto and lower chord pillow ₀constant, because the support of string erector and string bridge are drawn close, the thus horizontal range l of string hook 6 and lower chord pillow ₃constant.If wish, string is wound around n circle in peg, and peg diameter is d, as shown in Figure 4, then and reserved string length:

l _r＝πdn (1)

String total length is

l _s＝l ₀+l _r(2)

Have according to Fig. 4

l _s＝l ₁+l ₂(3)

$h=\sqrt{l_1^2-l_4^2}=\sqrt{l_2^2-l_3^2}---\left(4\right)$

l ₀＝l ₄+l ₃(5)

Simultaneous formula (1), (2), (3), (4), (5) can obtain:

$h=\sqrt{{\left(\frac{{\left(\mathrm{\πdn}\right)}^2+{2\mathrm{\πdnl}}_0+2l_0{l}_3}{2(l_0+\mathrm{\πdn})}\right)}^2-l_3^2}---\left(6\right)$

If the vertical range after turns pointer 505 is stretching with string is h ₀, then the hook front end on number of turns chi bar, distance is H=h ₀-h locates, mark scale: I _x-L _m-C _n, wherein I _xfor guitar model, L _mfor string string number, C _nfor wishing the number of turns of string around peg.

After choosing the scale of number of turns chi, by the locking key 506 promoted on number of turns chi, number of turns chi bar 502 is fixed, prevent return spring 507 from being regained by chi bar 502.Locking key technical scheme is: under on-position, and promote locking key 506, chi bar 502 is pushed down by the brake(-holder) block 504 be fixed together with button, and now scroll spring 507 can not by chi bar 502 rollback.String 7 is hung over after on string hook 6, and rotate string button 9 suitably tension string 7, reset locking key 506, at this moment scroll spring 507 provides Hui Li to be held by string 7.

Number of turns chi 5, is arranged in the gathering sill 401 of support, and number of turns chi 5 is moved in the position according to required replacing string, makes hook 6, is positioned at directly over string 7, after adjusting position, and screwed in place nut 509.

The use step of the utility model guitar string erector:

1. fixedly mount device.Erector is placed on qin case 1 front, support and guitar string bridge 3 are drawn close, with cord 2 by erector and guitar qin case tighten;

2. selecting scale.The scale I on number of turns chi bar 502 is selected according to actual conditions _x-L _m-C _n, I _xfor guitar model, L _mfor string string number, C _nfor wishing the number of turns of string around peg, the scale selected being alignd with the tuning drive gear 505 on number of turns chi, promoting locking key 506, chi bar 502 is pinned.

3. string is installed.Number of turns chi 5 is moved to directly over required replacing string along gathering sill 401, screwed in place nut 509.String one end is fixed on after on string bridge 3, and hung over by string on the string hook 6 of erector, the other end winds in the peg 8 of scroll head.

4. strain string.Rotate the string button 9 of scroll head, suitably after tension string, the locking key 506 on reset number of turns chi bar, is rotated further string button 9, until string is straightened.

5. taken off from string by hook 6, adjustment number of turns chi 5 position, installs other string.

6., after all strings install, untie the cord 2 of fixed installation device, take off erector from guitar qin case.

Claims (2)

1. guitar string erector, is characterized in that, primarily of support (4), number of turns chi (5) and string hook (6) composition, number of turns chi is fixed on rack beam gathering sill (401); Chi bar (502) one end of number of turns chi is fixed on plane scroll spring (507), scroll spring center is fixed on center unmoving axle (508), it is contrary with number of turns chi bar pull-out direction that scroll spring returns force direction, by the Hui Li of scroll spring for string provides tension force; The chi bar outlet of number of turns chi is provided with the arrestment mechanism blocking chi bar; String hook is arranged on the movable end of number of turns chi chi bar.

2. guitar string erector according to claim 1, is characterized in that, number of turns chi chi bar is provided with number of turns scale.