CN207250109U - A kind of violoncello for preventing spike bar from slipping - Google Patents

Abstract

The utility model discloses a kind of violoncello for preventing spike bar from slipping,Its structure includes scroll head,Peg,Bridge,Tailpiece,Spike bar,Support device,Side plate,F holes,Web,Soundboard,String,Fingerboard,Neck,String bolt,Backboard,Soundboard and web,Side plate is integrated,The upper end of soundboard is fixed together by neck and scroll head,The left and right ends of scroll head are respectively provided with the peg of two respectively,Peg is mechanically connected to scroll head both ends by string bolt,Fingerboard is installed on neck and is engaged with soundboard,Improve the mode of traditional fixed violoncello of spike bar support,Improve support device,Spike bar is fixed in support device,The support device consolidates the structure design of support for triangle,Produce symmetrical picture structure,It can effectively prevent that there is a phenomenon where slip for spike bar,And contraction merging can be also carried out when not needed,It is user-friendly for carrying,It is highly practical.

Description

A kind of violoncello for preventing spike bar from slipping

Technical field

The utility model is a kind of violoncello for preventing spike bar from slipping, and belongs to violoncello field.

Background technology

Violoncello is essential tenor or violone in orchestra, belongs to the lower middle pitch in violin race musical instrument Musical instrument, tone color is simple and honest plentiful, has optimistic personality, is good at and plays lyric melody, the deep and complicated emotion of expression, also with Contrabass undertakes the bass part of harmony jointly, there is the title of " music lady ", and violoncello is write with its ardent and abundant tone color Claim, be one of most common musical instrument in symphony orchestra, be adapted to play the part of various roles：Sometimes bass camp is added, is sent out in portion in a low voice Go out heavy sigh；Sometimes then play the role of rhythm backbone with two strings in centre, at the time of violoncello is the most brilliant, to count work Bent family assigns its performance such as the mission of the melody of song, the beautiful melody that whole violoncello group is played out, it is sufficient to make in symphony orchestra Any other musical instrument all prove definitely inferior.

Violoncello has four strings as violin or other stringed musical instrument family members, and range is about four octaves, sound High octave (C-G-d-a) lower than viola, music score usually use bass staff, are using alto staff sometimes compared with treble, sometimes Also trble staff is used.First a string pronunciation of violoncello is magnificent strong, is imbued with the property sung, and second d string, tone color is dimmer, the 3rd, four strings (G, C) are overcast loud, can bear the very heavy sound equipment of band.Although its pronunciation principle is with, violin It is identical, but its finger is far different with violin in bass area position, position can be played with thumb especially in treble. As for playing technique, since violoncello is differed in body size, string arrangement and string length etc. with violin, because And it play method from, violin it is different, be to be clipped between two legs to play.During performance, body is gently sandwiched in two knees by concert performer Between, bottom is supported with a height adjustable metal bar.Then both bow stick had been manipulated the strings and used to useful bow maula string, finger to playing mode Strike string.

During violoncello is played, easily because spike bar skids or supports de-stabilising effect to play, base In this, prior art discloses Application No.：A kind of 201220556208.8 violoncello for preventing spike bar from slipping, including Qin body and spike bar, are provided with tail button on the qin body, knob are provided with tail button, and the upper end of the spike bar is provided with pin hole, The lower end of spike bar is provided with rubber tip and bung flange, and the upper end of the spike bar is extend into qin body through tail button, the spike The surface of bar is equipped with and the matched some concave points of knob.The utility model improves the strut surfaces of conventional violoncello spike bar State, does not influence overall performance and the use of spike bar, will not cause harmful effect to the overall appearance of spike bar and violoncello, Enable player by the screw top of knob in concave point, increase the contact area between knob screw rod and strut and friction Resistance, can more effectively prevent from strut in qin body weight and play to get loose between knob under the double action of strength, tie Structure is reasonable, simple, ingenious, handling ease, of low cost, can be widely applied on the violoncello of all kinds and model.But After long-time has been used, the surface between the concave point is easily subject to serious damage, causes the diameter of the concave point to become larger, and makes It is unstable to obtain concave point support, the phenomenon for causing spike bar to skid, not only wastes cost and for the user without real The property used.

Utility model content

In view of the deficienciess of the prior art, the utility model aim be to provide it is a kind of prevent that spike bar from slipping big carry Qin, to solve after long-time has been used, the surface between the concave point is easily subject to serious damage, causes the diameter of the concave point Become larger, and make it that concave point support is unstable, the phenomenon for causing spike bar to skid, not only wastes cost and for the user The problem of without practicality.

To achieve these goals, the utility model is to realize by the following technical solutions：One kind can prevent spike Bar slip violoncello, its structure include scroll head, peg, bridge, tailpiece, spike bar, support device, side plate, F holes, web, Soundboard, string, fingerboard, neck, string bolt, backboard, the soundboard are integrated with web, side plate, the upper end of the soundboard It is fixed together by neck and scroll head, the left and right ends of the scroll head are respectively provided with the peg of two respectively, and the peg is led to Cross string bolt and be mechanically connected to scroll head both ends, fingerboard is installed on the neck and is engaged with soundboard, one end peace of the string Mounted in the inside of scroll head, the other end of the string is matched with fingerboard and is connected through bridge with tailpiece, a left side for the bridge Right both ends are respectively provided with F holes and chisel is located at soundboard upper surface, and the center bottom of the soundboard is mechanically connected to support by spike bar Device, the side plate, web, soundboard, composition of backboards are body, and the scroll head includes string slot, wooden seat, capotasto, keyhole, the string Groove is provided with more than two capotastos for concave shape structure and recess, and the capotasto is connected with string and is matched with soundboard, institute Keyhole is stated equipped with two or more and is uniformly installed on the left and right ends of string slot, the bottom of the string slot is tied with wooden being integrated of seat Structure, the tailpiece be connected be string slot, stop, plate face, connection rope, the first connecting shaft, afterbody bolt, adjustment axis, the system String slot is installed in plate face equipped with two or more and is engaged with string, and the plate face is equipped with more than two stops and position In the right end for being string slot, the stop is threadedly connected to a left side for afterbody bolt by plate face and soundboard clearance fit, the adjustment axis End, the support device is by installing port, bearing block, the first support feet, the second support feet, the second connecting shaft, upper connecting block, downlink Block, anti-skidding footmuff, connecting rod, the 3rd support feet composition are connect, the installing port passes through the internal thread that is internally provided with and spike bar spiral shell Line connects, and the centre of the bearing block is equipped with the installing port for circular configuration, and the bottom of the bearing block uniformly connects respectively It is connected to the first support feet, the second support feet, the 3rd support feet, first support feet, the second support feet, the bottom of the 3rd support feet End is nested with anti-skidding footmuff and is gap-matched, and second connecting shaft is installed in the second support feet and passes through left and right two The upper connecting block being equipped with is held to be connected with connecting rod, the upper connecting block is mechanically connected by connecting rod and lower connecting block, under described Connecting block is welded on non-slip feet set.

Further, first support feet, the second support feet, the 3rd support feet form a three-legged structure.

Further, the bridge is fixedly mounted on the centre position of soundboard.

Further, the peg is configured to beveled structure with string bolt.

Further, it is 650mm-755mm that the string, which is equipped with two or more and length,.

Further, the anti-skidding footmuff is made using anti-slip rubber material, has nonslip properties.

Further, the adjustment axis uses the weak corrosive mediums such as resistance to air, steam, water or the Steel material with rustless property It is made.

Further, first connecting shaft is equipped with rubber sleeve, fixing bearing, protrusion, joint steel pipe.

Further, the joint steel pipe is nested in the inside of rubber sleeve through protrusion, and the head end of the joint steel pipe leads to The inside that fixing bearing is fixed on protrusion is crossed, the appearance of the rubber sleeve is helical form.

Further, the rubber sleeve can make the first connecting shaft do small-scale telescopic movable.

Beneficial effect

A kind of violoncello for preventing spike bar from slipping of the utility model, during violoncello performance is carried out, uses Person first according to itself need appropriate adjustment is carried out to violoncello, string is transferred to more closely compare from fingerboard can be correct By quasi- tone, so bridge somewhat can cut lower, but also see personal habits, can not from too near, fingerboard Angle without what very exact standard, it is possible to the deficiency of fingerboard angle, string are made up by varying the height of bridge Pillow may be bothered somewhat, because string is wanted on the groove that frame is opened above the capotasto, the contact site of string and capotasto is preferably very flat Whole, optimal situation is that capotasto can be good at frame and live string, but will not allow string too near from fingerboard again.Related capotasto is winded up The position of placement, generally, respectively stays the place of 3mm on the both sides of capotasto, is then divided into three parts remaining, whether general see Spacing between every string is the appearance of 6mm, frame string of just so slotting if it can manage it, if not all right, just capotasto both sides The vacant lot stayed reduces little by little, and therefore, after adjusting the suitable distance, the support device is contraction merging phase before use, In use, user struts support device, the first support feet, the second support feet, the 3rd support feet use spiral shell by connecting rod The mode of silk connection makes to link together between any two, since the diameter of the first connecting shaft is more than the diameter of the second support feet, because This function that can be slided up and down, when three support feets are strutted, the first connecting shaft is slided toward the bottom of the second support feet, sliding During to least significant end, support device is softened state, user suitably can highly adjust the branch according to oneself to greatest extent The height of support, the state after support device struts is triangular structure, and spike bar uses integrated design with support device, and It is gusseted that support device, which improves traditional single foot support, can effectively prevent spike bar from producing the phenomenon slipped, improve The mode of traditional fixed violoncello of spike bar support, improves support device, spike bar is fixed in support device, the branch Support arrangement consolidates the structure design of support for triangle, produces symmetrical picture structure, can effectively prevent spike bar from slipping Phenomenon, and can also carry out contraction merging when not needed, be user-friendly for carrying, it is highly practical.

Brief description of the drawings

Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model Sign, objects and advantages will become more apparent upon：

Fig. 1 is a kind of structure diagram for the violoncello for preventing spike bar from slipping of the utility model.

Fig. 2 is that structure is shown after a kind of back support device for the violoncello for preventing spike bar from slipping of the utility model merges It is intended to.

Fig. 3 is a kind of structure diagram of the northeastward for the violoncello for preventing spike bar from slipping of the utility model.

Fig. 4 is the structure diagram of the utility model scroll head.

Fig. 5 is the structure diagram of the utility model scroll head southwestward.

Fig. 6 is the mirror-image structure schematic diagram of the utility model scroll head.

Fig. 7 is the structure diagram of the utility model tailpiece.

Fig. 8 is the structure diagram of A in the utility model Fig. 1.

Fig. 9 is the structure diagram of the utility model support device.

Figure 10 is the partial enlargement structural representation of the utility model tailpiece.

Figure 11 is the structure diagram of the first connecting shaft of the utility model.

In figure：Scroll head -1, peg -2, bridge -3, tailpiece -4, spike bar -5, support device -6, side plate -7, F holes -8, Web -9, soundboard -10, string -11, fingerboard -12, neck -13, string bolt -14, backboard -15, string slot -101, wooden seat -102, string Pillow -103, keyhole -104, be string slot -401, stop -402, plate face -403, connection rope -404, the first connecting shaft -405, tail Portion's bolt -406, adjustment axis -407, installing port -601, bearing block -602, the first support feet -603, the second support feet -604, second Connecting shaft -605, upper connecting block -606, lower connecting block -607, anti-skidding footmuff -608, connecting rod -609, the 3rd support feet - 6010th, rubber sleeve -4051, fixing bearing -4052, protrusion -4053, joint steel pipe -4054.

Embodiment

To make the technical means, creative features, achievable purpose and effectiveness that the utility model is realized easy to understand, below With reference to embodiment, the utility model is expanded on further.

Embodiment 1

- Figure 10 is please referred to Fig.1, the utility model provides a kind of violoncello for preventing spike bar from slipping, its structure includes Scroll head 1, peg 2, bridge 3, tailpiece 4, spike bar 5, support device 6, side plate 7, F holes 8, web 9, soundboard 10, string 11, refer to Plate 12, neck 13, string bolt 14, backboard 15, the soundboard 10 are integrated with web 9, side plate 7, the soundboard 10 it is upper End is fixed together by neck 13 with scroll head 1, and the left and right ends of the scroll head 1 are respectively provided with the peg 2 of two respectively, described Peg 2 is mechanically connected to 1 both ends of scroll head by string bolt 14, and fingerboard 12 is provided with the neck 13 and is engaged with soundboard 10, One end of the string 11 is installed on the inside of scroll head 1, and the other end of the string 11 is matched with fingerboard 12 and passes through bridge 3 It is connected with tailpiece 4, the left and right ends of the bridge 3 are respectively provided with F holes 8 and chisel is located at 10 upper surface of soundboard, the soundboard 10 Center bottom is mechanically connected to support device 6 by spike bar 5, and the side plate 7, web 9, soundboard 10, backboard 15 are combined as qin Body, the scroll head 1 include string slot 101, wooden seat 102, capotasto 103, keyhole 104, and the string slot 101 is concave shape structure and depression Place is provided with more than two capotastos 103, and the capotasto 103 is connected with string 11 and is matched with soundboard 10, and the keyhole 104 is set There is two or more and be uniformly installed on the left and right ends of string slot 101, the bottom of the string slot 101 is tied with 102 being integrated of wooden seat Structure, it is string slot 401, stop 402, plate face 403, connection rope 404, the first connecting shaft 405, afterbody that the tailpiece 4, which is connected with, Bolt 406, adjustment axis 407, system's string slot 401 are installed in plate face 403 equipped with two or more and are engaged with string 11, The plate face 403 is equipped with more than two stops 402 and passes through plate face positioned at the right end for being string slot 401, the stop 402 403 are threadedly connected to the left end of afterbody bolt 406 with 10 clearance fit of soundboard, the adjustment axis 407, and the support device 6 is by pacifying Fill mouth 601, bearing block 602, the first support feet 603, the second support feet 604, the second connecting shaft 605, upper connecting block 606, downlink Connect block 607, anti-skidding footmuff 608, connecting rod 609, the 3rd support feet 6010 to form, the installing port 601 is by being internally provided with Internal thread is threadedly coupled with spike bar 5, and the centre of the bearing block 602 is equipped with the installing port 601 for circular configuration, institute The bottom for stating bearing block 602 is uniformly connected with the first support feet 603, the second support feet 604, the 3rd support feet 6010, institute respectively State the first support feet 603, the second support feet 604, the bottom of the 3rd support feet 6010 are nested with anti-skidding footmuff 608 and between using Gap coordinates, and second connecting shaft 605 is installed on the upper connecting block 606 being equipped with the second support feet 604 and by left and right ends It is connected with connecting rod 609, the upper connecting block 606 is mechanically connected by connecting rod 609 and lower connecting block 607, the lower linking Block 607 is welded on anti-skidding footmuff 608, and first support feet 603, the second support feet 604, the 3rd support feet 6010 are formed One three-legged structure, the bridge 3 are fixedly mounted on the centre position of soundboard 10, and the peg 2 is configured to umbrella with string bolt 14 Shape structure, it is 650mm-755mm that the string 11, which is equipped with two or more and length, and the anti-skidding footmuff 608 uses anti-slip rubber Material is made, has nonslip properties, the adjustment axis 407 is using weak corrosive mediums such as resistance to air, steam, water or has rustless property Steel material it is made.

During violoncello performance is carried out, user needs the tune appropriate to violoncello progress according to itself first It is whole, string is transferred to closely a little compare from fingerboard 12 can correctly by quasi- tone, so bridge 3 can somewhat cut low one Point, but also see personal habits, can not be too near from obtaining, the angle of fingerboard 12 is without what very exact standard, so can The deficiency of 12 angle of fingerboard is made up with the height by varying bridge 3, capotasto 103 may be bothered somewhat, because string Want on the groove that frame opened above the capotasto 103, the contact site of string and capotasto 103 is preferably very smooth, and optimal situation is capotasto 103, which can be good at frame, lives string, but will not allow string too near from fingerboard 12 again.Wind up in relation to capotasto 103 position of placement, substantially It is respectively to stay the place of 3mm on the both sides of capotasto 103, is then divided into three parts remaining, sees whether probably between every string Spacing is the appearance of 6mm, frame string of just so slotting if it can manage it, and if not all right, the vacant lot that just capotasto both sides are stayed reduces Little by little, therefore, after adjusting the suitable distance, the support device 6 is shrinks merging phase before use, as shown in Fig. 2, making Used time, user strut support device 6, and the first support feet 603, the second support feet 604, the 3rd support feet 6010 pass through connection Bar 609 makes to link together between any two by the way of screw connection, since the diameter of the first connecting shaft 605 is more than second The diameter of spike 604, therefore the function that can be slided up and down, when three support feets are strutted, the first connecting shaft 605 is toward The bottom of two support feets 604 is slided, and when sliding to least significant end, support device 6 is softened state, user can roots to greatest extent Suitably highly adjust the height of the support according to oneself, the state after support device 6 struts is triangular structure, spike bar 5 with Support device 6 uses integrated design, and it is gusseted that support device 6, which improves traditional single foot support, can effectively be prevented Only spike bar 5 produces the phenomenon slipped.

Embodiment 2

- Figure 11 is please referred to Fig.1, first connecting shaft 405 is equipped with rubber sleeve 4051, fixing bearing 4052, protrusion 4053rd, joint steel pipe 4054, the joint steel pipe 4054 are nested in the inside of rubber sleeve 4051, the company through protrusion 4053 The head end for connecing steel pipe 4054 is fixed on the inside of protrusion 4053 by fixing bearing 4052, and the appearance of the rubber sleeve 4051 is Helical form, the rubber sleeve 4051 can make the first connecting shaft 405 do small-scale telescopic movable.

During performance, violoncello is caused not to be constantly in a placement shape due to the use of the playing state of person State, might have some small angular transformations, therefore, devises first with the junction of support device 6 in spike bar 5 and is connected Axis 405, the heart of first connecting shaft 405 are connected by steel pipe 4054, can effectively improve spike bar 5 and support device 6 it Between coupling stiffness, furthermore, steel pipe 4054 outer surface wrap up rubber sleeve 4051, rubber material is partially soft, can be bent Effect, therefore, steel pipe 4054 is combined with rubber sleeve 4051, the conversion of angle, the conversion angle are carried out when can make performance Scope is between 3-10 °.

Bridge 3 described in the utility model also known as zither bridge, it is the spile of one piece of bridge type, is firmly stood in qin panel Centre, and be pressurized under under the pressure of four strings, it is a very important component on violin, so also there is person, it is violin Heart, its effect is not only only that is transmitted to panel the vibrations of four strings, whole violin is shaken immediately together, it Height determines string to the distance of fingerboard again, so as to influence the feel of player with playing performance.

Its structure and principle are all that this technology personnel can be learnt by technical manual or be known by normal experiment method, The utility model solves the problems, such as it is after long-time has been used, and the surface between the concave point is easily subject to serious damage, leads Cause the diameter of the concave point to become larger, and cause concave point support it is unstable, cause spike bar skid phenomenon, not only waste cost and Do not have practicality for the user, the utility model is combined with each other by above-mentioned component, improves traditional spike The mode of the fixed violoncello of bar support, improves support device, spike bar is fixed in support device, which is three Angle consolidates the structure design of support, produces symmetrical picture structure, can effectively prevent spike bar there is a phenomenon where slipping, and Need not when can also carry out contraction merging, be user-friendly for carrying, it is highly practical, it is described in detail below：

The support device 6 is connected by installing port 601, bearing block 602, the first support feet 603, the second support feet 604, second Spindle 605, upper connecting block 606, lower connecting block 607, anti-skidding footmuff 608, connecting rod 609, the 3rd support feet 6010 form, institute State installing port 601 to be threadedly coupled with spike bar 5 by the internal thread being internally provided with, the centre of the bearing block 602 is equipped with For the installing port 601 of circular configuration, the bottom of the bearing block 602 is uniformly connected with the support of the first support feet 603, second respectively Foot 604, the 3rd support feet 6010, first support feet 603, the second support feet 604, the bottom of the 3rd support feet 6010 are embedding It is cased with anti-skidding footmuff 608 and is gap-matched, second connecting shaft 605 is installed in the second support feet 604 and passes through a left side The upper connecting block 606 that right both ends are equipped with is connected with connecting rod 609, and the upper connecting block 606 passes through connecting rod 609 and lower connecting block 607 mechanically connect, and the lower connecting block 607 is welded on anti-skidding footmuff 608.

The advantages of basic principle and main feature and the utility model of the utility model has been shown and described above, for For those skilled in the art, it is clear that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and without departing substantially from this In the case of the spirit or essential attributes of utility model, the utility model can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the utility model is by institute Attached claim rather than described above limit, it is intended that will fall in the implication and scope of the equivalency of claim All changes are embraced therein.Any reference numeral in claim should not be considered as to the involved right of limitation It is required that.

Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art It is appreciated that other embodiment.

Claims (5)

1. a kind of violoncello for preventing spike bar from slipping, its structure includes scroll head (1), peg (2), bridge (3), tailpiece (4), spike bar (5), support device (6), side plate (7), F holes (8), web (9), soundboard (10), string (11), fingerboard (12), Neck (13), string bolt (14), backboard (15), it is characterised in that：

The soundboard (10) is integrated with web (9), side plate (7), and the upper end of the soundboard (10) passes through neck (13) It is fixed together with scroll head (1), the left and right ends of the scroll head (1) are respectively provided with the peg (2) of two, the peg respectively (2) scroll head (1) both ends are mechanically connected to by string bolt (14), be provided with the neck (13) fingerboard (12) and with soundboard (10) It is engaged, one end of the string (11) is installed on the inside of scroll head (1), and the other end of the string (11) is matched with fingerboard (12) and through bridge (3) it is connected with tailpiece (4), the left and right ends of the bridge (3) are respectively provided with F holes (8) and chisel is located at sound Plate (10) upper surface, the center bottom of the soundboard (10) are mechanically connected to support device (6), the side by spike bar (5) Plate (7), web (9), soundboard (10), backboard (15) are combined as body；

The scroll head (1) includes string slot (101), wooden seat (102), capotasto (103), keyhole 104, and the string slot (101) is character cut in bas-relief Shape structure and recess are provided with more than two capotastos (103), and the capotasto (103) is connected with string (11) and is matched with sound Plate (10), the keyhole (104) are equipped with two or more and are uniformly installed on the left and right ends of string slot (101), the string slot (101) Bottom be integrated with wooden seat (102)；

It is string slot (401), stop (402), plate face (403), connection rope (404), the first connection that the tailpiece (4), which is connected with, Axis (405), afterbody bolt (406), adjustment axis (407), system's string slot (401) are installed in plate face (403) equipped with two or more Above and with string (11) it is engaged, it is string slot (401) that the plate face (403), which is equipped with more than two stops (402) and is located at, Right end, the stop (402) is threadedly connected to by plate face (403) and soundboard (10) clearance fit, the adjustment axis (407) The left end of afterbody bolt (406)；

The support device (6) by installing port (601), bearing block (602), the first support feet (603), the second support feet (604), Second connecting shaft (605), upper connecting block (606), lower connecting block (607), anti-skidding footmuff (608), connecting rod (609), the 3rd Spike (6010) forms, and the installing port (601) is threadedly coupled by the internal thread being internally provided with spike bar (5), the axis The centre of bearing (602) is equipped with the installing port (601) for circular configuration, and the bottom difference of the bearing block (602) is uniform It is connected with the first support feet (603), the second support feet (604), the 3rd support feet (6010), first support feet (603), Two support feets (604), the bottom of the 3rd support feet (6010) are nested with anti-skidding footmuff (608) and are gap-matched, described Second connecting shaft (605) is installed on the upper connecting block (606) being equipped with the second support feet (604) and by left and right ends with being connected Bar (609) connects, and the upper connecting block (606) is mechanically connected by connecting rod (609) and lower connecting block (607), the downlink Block (607) is connect to weld on anti-skidding footmuff (608).

A kind of 2. violoncello for preventing spike bar from slipping according to claim 1, it is characterised in that：First support Foot (603), the second support feet (604), the 3rd support feet (6010) form a three-legged structure.

A kind of 3. violoncello for preventing spike bar from slipping according to claim 1, it is characterised in that：The bridge (3) It is fixedly mounted on the centre position of soundboard (10).

A kind of 4. violoncello for preventing spike bar from slipping according to claim 1, it is characterised in that：The peg (2) It is configured to beveled structure with string bolt (14).

A kind of 5. violoncello for preventing spike bar from slipping according to claim 1, it is characterised in that：The string (11) It is 650mm-755mm equipped with two or more and length.