CN212570364U

CN212570364U - Flute B tail pipe

Info

Publication number: CN212570364U
Application number: CN202021073807.5U
Authority: CN
Inventors: 董德昌; 井上昭史
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-02-19
Anticipated expiration: 2030-06-11

Abstract

The utility model relates to a flute especially relates to a flute B tail pipe. The utility model discloses a flute B tail pipe, including the tail pipe body, four sound holes have been seted up on the tail pipe body, be equipped with the first keycap that can open and close on four sound holes respectively, the second keycap, third keycap and fourth keycap, the top surface of tail pipe body left end is equipped with the supplementary key of D #, the adjacent horizontal pole that is provided with the supplementary horizontal pole of B key in right side of the supplementary key of D #, C key loose wheel and C # supplementary key, and the adjacent setting in three's right side is equipped with the supplementary board of pressing of B key, the right-hand member of B key spare pole and the supplementary rear end integrated into one piece or the fixed of pressing the board of B key, when the supplementary board of pressing of B key moves down, the equal coordinated type of C key loose wheel and C # supplementary key moves down, when the moving wheel downstream of C key, the coordinated type of the supplementary key of. The utility model discloses a flute B tail pipe, the linkage of button is effectual, and easy operation is practical, reduces the error of playing to the smooth playing of when realization B sound-C # sound and B sound-D # sound conversion that can be fine.

Description

Flute B tail pipe

Technical Field

The utility model relates to a flute especially relates to a flute B tail pipe.

Background

The flute is a main high-pitched melody musical instrument in modern orchestral music and indoor music, and is a cylindrical long tube with a plurality of sound holes. The general flute comprises a flute head, a flute body and a flute tail, when a player plays the flute, the fingers of two hands are required to press keys of the flute body and the flute tail, wherein the key on the flute tail is pressed by a little finger of the right hand so as to control 5 tones of D # (rising), D # (coming), C # (rising, Duo), C (Duo), B (West), and the like. 5 keys such as a D # auxiliary Key 6 (i.e., a rising auxiliary Key), a C # auxiliary Key (i.e., a rising auxiliary Key) 9, a C Key moving wheel (i.e., a left Key auxiliary wheel) 8, a B Key moving wheel (west Key moving wheel) 18, and a B Key auxiliary Key (i.e., a west Key auxiliary Key, i.e., GIZMO Key)19 are provided on the B tailpipe as shown in fig. 1. Wherein, the C key movable wheel 8 and the B key movable wheel 18 adopt roller wheel design to facilitate rolling and easy operation, but the two movable wheels (roller wheels) designed on the B tail pipe often cause inflexible rolling and have unsatisfactory operation effect. The Key B auxiliary Key (GIZMO Key)19 is a Key which is independently arranged and protrudes upwards, is connected with the other end of the Key B movable wheel 18 and is arranged on the right side of other keys, the Key B auxiliary Key (GIZMO Key) Key19 is pressed, the Key C movable wheel 8 and the Key B movable wheel 18 are linked downwards, the Key C # auxiliary Key 9 is simultaneously linked downwards with the Key C movable wheel 8, three sound holes on the front surface of a tail tube B are closely combined, but the size of the Key B auxiliary Key19 is smaller, the operation is not easy, the effect of secondary linkage is not good, the error can be caused, and the effect of closely combining the three sound holes is not good.

If the flute is well sealed and adjusted, the linkage adjustment is correct, when playing the sound C, the little finger presses on the C key moving wheel 8, and simultaneously the C # auxiliary key 9 is linked downwards, and the two sound holes are sealed; when a sound B is played, a little finger presses on the two movable wheels (the B key movable wheel 18 and the C key movable wheel 8), the force application of the little finger is even, the two movable wheels are pressed properly, and meanwhile, the C # auxiliary key 9 is linked, so that the last three sound holes are closed, otherwise, the sound B is difficult to form. If the sealing adjustment is not good enough, the linkage adjustment of C and C # has errors, and when playing the C sound, the little finger needs to press the C # auxiliary key 9 and the C # movable wheel 8 tightly; when playing the sound B, the little finger needs to press the moving wheel 18 of the key B, and the little finger presses the three auxiliary keys, so that the playing is difficult to grasp, and errors often occur.

In music performance, music is often played smoothly, namely, musical scales are smooth and continuous, and cannot have the feeling of one tone and one tone, when a traditional B tail tube is used for playing B-tone-C # or B-tone-D # sound, a little finger is required to be lifted and then an auxiliary key is pressed, and the effect cannot be achieved by the little finger sliding, so that the musical scales cannot have the smooth effect.

In addition, the flute is a harmonic musical instrument, the high pitch has a phenomenon of high pitch, particularly the highest pitch C, the high pitch is difficult to form, and on the traditional B tail tube, a little finger needs to press on an auxiliary Key of a B Key, commonly called as GIZMO Key, although the function is improved, the high pitch phenomenon still exists.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve not enough among the prior art and accomplish, the utility model aims at providing a flute B tail pipe, the linkage of button is effectual, and easy operation is practical, reduces and plays the error, has very big help to playing the person to the realization B sound-C # sound that can be fine and the smooth playing of circle when B sound-D # sound converts, and improves the finished sound effect of homophony C.

The utility model discloses a flute B tail pipe, including extending the tail pipe body that sets up from left to right, the trailing wall body rear side of tail pipe body left end has seted up first sound hole, the leading wall at tail pipe body middle part has seted up horizontal interval set up second sound hole, third sound hole and fourth sound hole, first sound hole, the second sound hole, third sound hole and fourth sound hole correspond respectively and are equipped with first key cover, second key cover, third key cover and fourth key cover that can open and close, be equipped with the D # auxiliary key that extends the setting from back to front on the top surface of tail pipe body left end, the right side of D # auxiliary key is adjacent to be provided with the supplementary horizontal pole of B key, C key loose wheel and the C # auxiliary key that arrange from back to front in proper order to the adjacent board that presses of B key that extends from back to front that is provided with on the right side of the three, the right-hand member of B key auxiliary pole with the supplementary upper end of board that presses the B key is integrated into one piece or fixed, the D # auxiliary key is fixedly connected with the first key cover through a first rotating shaft, the C # auxiliary key is fixedly connected with the second key cover through a second rotating shaft, the C key movable wheel is fixedly connected with the third key cover through a third rotating shaft, the B key auxiliary cross rod and the B key auxiliary pressing plate are fixedly connected with the fourth key cover through a fourth rotating shaft, when the B key auxiliary pressing plate moves downwards, the C key movable wheel and the C # auxiliary key move downwards in an all-linkage mode, and when the C key movable wheel moves downwards, the C # auxiliary key moves downwards in a linkage mode.

The utility model discloses a flute B tail pipe can also be:

the top surface of the D # auxiliary key, the top surface of the B # auxiliary cross rod, the top surface of the B # auxiliary pressing plate and the top surface of the C # auxiliary key are positioned on the same plane.

The top surface of the B key auxiliary rod is connected with the top surface of the B key auxiliary pressing plate in a smooth transition mode.

The B key auxiliary rod is an upward convex arc extending from right to left.

The auxiliary C # key and the second rotating shaft are provided with a B & C # linkage plate between, the C key movable wheel and the third rotating shaft are provided with a B & C linkage plate between, the B & C # linkage plate and the B & C linkage plate are both positioned below the auxiliary B key pressing plate, and the lower surface of the auxiliary B key pressing plate is respectively abutted to the upper surface of the B & C # linkage plate and the upper surface of the B & C linkage plate in a releasable manner.

The rear side edge of the B & C # linkage plate is provided with a C & C # linkage plate protruding backwards, the C & C # linkage plate is located below the B & C # linkage plate, and the lower surface of the B & C # linkage plate is in releasable abutting contact with the upper surface of the C & C # linkage plate.

The front end of the B key auxiliary pressing plate is flush with the front end of the C # auxiliary key.

The utility model discloses a flute B tail pipe, including extending the tail pipe body that sets up from left to right, the trailing wall body rear side of tail pipe body left end has seted up first sound hole, the leading wall at tail pipe body middle part has seted up horizontal interval set up second sound hole, third sound hole and fourth sound hole, first sound hole, the second sound hole, third sound hole and fourth sound hole correspond respectively and are equipped with first key cover, second key cover, third key cover and fourth key cover that can open and close, be equipped with the D # auxiliary key that extends the setting from back to front on the top surface of tail pipe body left end, the right side of D # auxiliary key is adjacent to be provided with the supplementary horizontal pole of B key, C key loose wheel and the C # auxiliary key that arrange from back to front in proper order to the adjacent board that presses of B key that extends from back to front that is provided with on the right side of the three, the right-hand member of B key auxiliary pole with the supplementary upper end of board that presses the B key is integrated into one piece or fixed, the D # auxiliary key is fixedly connected with the first key cover through a first rotating shaft, the C # auxiliary key is fixedly connected with the second key cover through a second rotating shaft, the C key movable wheel is fixedly connected with the third key cover through a third rotating shaft, the B key auxiliary cross rod and the B key auxiliary pressing plate are fixedly connected with the fourth key cover through a fourth rotating shaft, when the B key auxiliary pressing plate moves downwards, the C key movable wheel and the C # auxiliary key move downwards in an all-linkage mode, and when the C key movable wheel moves downwards, the C # auxiliary key moves downwards in a linkage mode. Thus, when the D # auxiliary key is pressed, the first key cover is tightly connected with the first sound hole; pressing the C # auxiliary key, enabling the second key cover to be tightly fit with the second sound hole, pressing the C # movable wheel, enabling the C # auxiliary key to move downwards in a linkage mode, enabling the second key cover and the third key cover to be tightly fit with the second sound hole and the third sound hole respectively, and enabling the lower surface of the right end of the C # movable wheel to be in releasable abutting contact with the lower surface of the right end of the C # auxiliary key, so that the C # auxiliary key is driven to move downwards by the downward movement of the C # movable wheel; the auxiliary cross rod or the auxiliary pressing plate for the B key is pressed, the C key movable wheel and the C # auxiliary key move downwards in a linkage mode, the second key cover, the third key cover and the fourth key cover are respectively sealed with the second sound hole, the third sound hole and the fourth sound hole, concretely, the lower surface of the B key auxiliary pressing plate 1 is in releasable abutting contact with the right end of the C key movable wheel and the upper surface of the right end of the C # auxiliary key, and therefore the B key auxiliary cross rod or the B key auxiliary pressing plate moves downwards to drive the C key movable wheel and the C # auxiliary key to move downwards. Compared with the prior art, the auxiliary Key of the B Key (GIZMO Key) is changed into the auxiliary pressing plate of the B Key extending longitudinally (from back to front), and the linkage between the auxiliary pressing plate of the B Key and the auxiliary Key of the C # is increased, the auxiliary pressing plate of the plate-shaped B Key has large size and is easier to operate, and the auxiliary pressing plate of the B Key extends from back to front (longitudinally), after being pressed, the movable wheel of the C Key and the auxiliary Key of the C # move downwards in a direct linkage manner, the secondary linkage is cancelled, and the linkage effect is good; the B key auxiliary cross rod and the B key movable wheel are changed into the B key auxiliary cross rod, so that the rolling of the keys is cancelled, and when playing, a little finger can slide to the D # auxiliary key from the B key auxiliary pressing plate along the B key auxiliary cross rod without being lifted. When playing the sound B, the little finger presses the auxiliary pressing board of the key B or the auxiliary cross bar of the key B extending transversely (from right to left), because of the key linkage, the three key covers of the second key cover, the third key cover and the fourth key cover are closed together, the operation of the player is more mastered and better mastered. In the expression of music round and smooth playing, B sound-C # sound can slide from a B key auxiliary pressing plate to a C # auxiliary key by a little finger, B sound-D # sound can slide from a B key auxiliary cross rod to a D # auxiliary key by a little finger, or a little finger slides from the B key auxiliary pressing plate to the D # auxiliary key through the B key auxiliary cross rod, so that the little finger does not need to press one auxiliary key after being lifted, the little finger keeps a pressing state when the B key auxiliary pressing plate and the B key auxiliary cross rod slide, three key covers are kept closed all the time until the little finger presses the D # auxiliary key (namely after being converted to the D sound), and therefore, the music round and smooth effect can be achieved. In addition, when the highest sound C is played, only a little finger is pressed on the B key auxiliary pressing plate or the transverse B key auxiliary cross rod, and due to key linkage, the second key cover, the third key cover and the fourth key cover are tightly closed together, so that the high sound C is more accurate and easier to sound, and the problem that the high sound C is higher and difficult to sound is solved. In addition, "D # auxiliary key" may also be referred to as "ascending auxiliary key", "B key auxiliary crossbar" may also be referred to as "west key auxiliary crossbar", "C key moving wheel" may also be referred to as "duo key moving wheel", "C # auxiliary key" may also be referred to as "ascending auxiliary key", and "B key auxiliary pressing plate" may also be referred to as "west key auxiliary pressing plate". Compared with the prior art, the utility model discloses a flute B tail pipe has following advantage: the linkage effect of the keys is good, the operation is simple and practical, the playing errors are reduced, great help is provided for players, the smooth playing of B sound-C # sound and B sound-D # sound during conversion can be well realized, and the sound forming effect of the highest sound C is improved.

Drawings

Fig. 1 is a front view of a tail pipe of a flute B in the prior art.

Fig. 2 is a side view of a tail pipe of a flute B in the prior art.

Fig. 3 is a front structural schematic view of a B-tail pipe of the flute of the present invention.

Fig. 4 is a schematic side view of a B-tailpipe of the flute of the present invention.

Fig. 5 is a schematic view of the key of the flute B tail pipe of the present invention.

Description of the figures

1 … tailpipe body 2 … first fallboard 3 … second fallboard

4 … third fallboard 5 … fourth fallboard 6 … D # auxiliary key

7 … B key auxiliary crossbar 8 … C key activity wheel 9 … C # auxiliary key

10 … B key auxiliary pressing plate 11 … first rotating shaft 12 … second rotating shaft

13 … third rotating shaft 14 … fourth rotating shaft 15 … B & C # linkage plate

16 … B & C linkage plate 17 … C & C # linkage plate 18 … B key moving wheel

19…GIZMO Key

Detailed Description

In the present invention, if the direction (up, down, left, right, front, and outside) is described, the structure shown in fig. 3 is used as a reference for description, but the direction of practical use of the present invention is not limited thereto. Wherein, the D # auxiliary key 6 is on the left, and the B key auxiliary pressing plate 10 is on the right; the key B auxiliary cross rod 7 is arranged above the tail pipe body 1; the C # auxiliary key 9 is at the front and the C key movable wheel 8 is at the rear.

The flute B tail pipe of the present invention will be described in further detail with reference to fig. 3 to 5.

The flute B tail pipe of the utility model, please refer to figures 3 to 5, comprises a tail pipe body 1 extending from left to right, a first sound hole is provided on the rear side surface of the left end of the tail pipe body 1, a second sound hole, a third sound hole and a fourth sound hole are provided on the front side surface of the middle part of the tail pipe body 1 at a transverse interval, the first sound hole, the second sound hole, the third sound hole and the fourth sound hole are respectively and correspondingly provided with a first key cover 2, a second key cover 3, a third key cover 4 and a fourth key cover 5 which can be opened and closed, a D # auxiliary key 6 extending from back to front is provided on the top surface of the left end of the tail pipe body 1, a B key auxiliary cross bar 7, a C key movable wheel 8 and a C # auxiliary key 9 which are sequentially arranged from back to front are adjacently arranged on the right side of the D # auxiliary key 6, and a B key auxiliary pressing plate 10 extending from front is adjacently arranged on the right side of the three, the right-hand member of B key auxiliary rod with the supplementary board 10 that presses of B key upper end integrated into one piece or fixed, D # auxiliary key 6 through first pivot 11 with first key cover 2 fixed connection, C # auxiliary key 9 through second pivot 12 with second key cover 3 fixed connection, C key activity wheel 8 through third pivot 13 with third key cover 4 fixed connection, B key auxiliary horizontal pole 7 with B key is supplementary presses board 10 through fourth pivot 14 with fourth key cover 5 fixed connection, works as when B key is supplementary presses the board and moves down, C key activity wheel 8 with the equal coordinated type of C # auxiliary key 9 moves down, works as when C key activity wheel 8 moves down, C # auxiliary key 9 moves down. Thus, when the D # auxiliary key 6 is pressed, the first key cover is closely connected with the first sound hole; pressing the C # auxiliary key 9, enabling the second key cover 3 to be in close fit with the second sound hole, pressing the C # movable wheel 8, enabling the C # auxiliary key 9 to move downwards in a linkage mode, enabling the second key cover 3 and the third key cover 4 to be in close fit with the second sound hole and the third sound hole respectively, specifically enabling the lower surface of the right end of the C # movable wheel 8 to be in releasable abutting contact with the lower surface of the right end of the C # auxiliary key 9, and enabling the C # movable wheel 8 to move downwards to drive the C # auxiliary key 9 to move downwards; the auxiliary cross rod 7 of the B key or the auxiliary pressing plate 10 of the B key is pressed, the C key movable wheel 8 and the C # auxiliary key 9 move downwards in a linkage mode, the second key cover 3, the third key cover 4 and the fourth key cover 5 are respectively in fit with the second sound hole, the third sound hole and the fourth sound hole, specifically, the lower surface of the auxiliary pressing plate 10 of the B key can be in releasable abutting contact with the right end of the C key movable wheel 8 and the upper surface of the right end of the C # auxiliary key 9, and therefore the auxiliary cross rod 7 of the B key or the auxiliary pressing plate 10 of the B key can move downwards to drive the C key movable wheel 8 and the C # auxiliary key 9 to move downwards. Compared with the prior art, the B Key auxiliary Key (GIZMO Key19) is changed into the B Key auxiliary pressing plate 10 extending longitudinally (from back to front), and the linkage between the B Key auxiliary pressing plate 10 and the C # auxiliary Key 9 is increased, the plate-shaped B Key auxiliary pressing plate 10 is large in size and easy to operate, and extends from back to front (longitudinally), after being pressed, the C Key movable wheel 8 and the C # auxiliary Key 9 directly move downwards in a linkage manner, the secondary linkage is cancelled, and the linkage effect is good; the B key auxiliary cross bar 7 and the B key movable wheel 18 are changed into the B key auxiliary cross bar 7, the rolling of the keys is cancelled, and when playing, the little finger can slide to the D # auxiliary key 6 from the B key auxiliary pressing plate 10 along the B key auxiliary cross bar 7 without being lifted. When playing the sound B, as long as the little finger presses the auxiliary pressing board 10 of the key B or the auxiliary cross bar 7 of the key B extending transversely (from right to left), because of the key linkage, the three key covers such as the second key cover 3, the third key cover 4 and the fourth key cover 5 are closed together, the player can operate more firmly and better master. In the representation of music round and smooth, B sound-C # sound can slide from the B key auxiliary pressing plate 10 to the C # auxiliary key 9 by a little finger, B sound-D # sound can slide from the B key auxiliary cross rod 7 to the D # auxiliary key 6 by a little finger, or a little finger slides from the B key auxiliary pressing plate 10 to the D # auxiliary key 6 through the B key auxiliary cross rod 7, so that the little finger does not need to press one auxiliary key after being lifted, the little finger keeps a pressing state when the B key auxiliary pressing plate 10 and the B key auxiliary cross rod 7 slide, three key covers are kept closed all the time until the little finger presses on the D # auxiliary key 6 (namely after being converted to the D sound), and the music has a smooth effect because the little finger does not feel like one sound and one sound. In addition, when the highest pitch C is played, as long as the little finger presses the B key auxiliary pressing plate 10 or the transverse B key auxiliary cross rod 7, the second key cover 3, the third key cover 4 and the fourth key cover 5 are tightly closed together due to key linkage, the high pitch C is more accurate and easier to form, and the problem that the high pitch C is higher and difficult to form is solved. Compared with the prior art, the utility model discloses a flute B tail pipe has following advantage: the linkage effect of the keys is good, the operation is simple and practical, the playing errors are reduced, great help is provided for players, the smooth playing of B sound-C # sound and B sound-D # sound during conversion can be well realized, and the sound forming effect of the highest sound C is improved.

The utility model discloses a flute B tail pipe, on the basis of the technical scheme of preceding description, please refer to fig. 3 to 5, can also be: the top surface of the D # auxiliary key 6, the top surface of the B key auxiliary cross rod 7, the top surface of the B key auxiliary pressing plate 10 and the top surface of the C # auxiliary key 9 are positioned on the same plane. Thus, compared with the prior art, the auxiliary pressing board 10 of the B Key does not adopt the convex arrangement of the GIZMO Key19, and is positioned on the same plane with the other three keys, so that when a little finger is used for playing the finger, the little finger does not need to be lifted up, and the smooth playing performance is facilitated. On the basis of the above-described technical solution, it is further preferable that the top surface of the B-key auxiliary lever is connected with the top surface of the B-key auxiliary pressing plate 10 in a smooth transition manner. Thus, the finger can be smoothly moved when the small finger switches the keys. On the basis of the technical solution described above, it is further preferable that the B-key auxiliary lever is an upward convex arc extending from right to left. Therefore, when the B sound is converted into the D # sound, the little finger slides to the D # auxiliary key 6 from the B key auxiliary pressing plate 10 through the B key auxiliary cross rod 7, the B key auxiliary rod is designed to be transversely bent, the finger moving track of the little finger can be better met, and the playing operation is smoother.

The utility model discloses a flute B tail pipe, on the basis of the technical scheme of preceding description, please refer to fig. 3 to 5, can also be: a B & C # linkage plate 15 is arranged between the C # auxiliary key 9 and the second rotating shaft 12, a B & C linkage plate 16 is arranged between the C key moving wheel 8 and the third rotating shaft 13, the B & C # linkage plate 15 and the B & C linkage plate 16 are both positioned below the B key auxiliary pressing plate 10, and the lower surface of the B key auxiliary pressing plate 10 is respectively and detachably abutted against the lower surface of the B & C # linkage plate 15 and the lower surface of the B & C linkage plate 16. Therefore, the B key auxiliary pressing plate 10 completely covers the B & C # linkage plate 15 and the B & C # linkage plate 16, when the B key auxiliary pressing plate 10 is pressed, the two linkage plates can be directly pressed to drive the C key movable wheel 8 and the C # auxiliary key 9 to move downwards in a linkage mode, the contact area between the B key auxiliary pressing plate 10 and the two linkage pressing plates is large, secondary linkage is cancelled, and the linkage effect is good. In addition, on the basis of the technical scheme described above, it is further preferable that a C & C # linkage plate 17 protruding backward is disposed on a rear side edge of the B & C # linkage plate 15, the C & C # linkage plate 17 is located below the B & C # linkage plate 15, and a lower surface of the B & C # linkage plate 15 and a lower surface of the C & C # linkage plate 17 are releasably abutted. Therefore, the C & C # linkage plate 17 is arranged on the B & C # linkage plate 15, and after the C key movable wheel 8 is pressed, the B & C linkage plate 16 presses the C & C linkage plate, so that the C # auxiliary key 9 is linked with the C key movable wheel 8, and the structure is compact. In addition, the "C & C # linkage plate" may also be referred to as a "pyrido and pyrido linkage plate".

The utility model discloses a flute B tail pipe, on the basis of the technical scheme of preceding description, please refer to fig. 3 to 5, can also be: the lower end of the B key auxiliary pressing plate 10 is flush with the lower end of the C # auxiliary key 9. Therefore, the arrangement is reasonable and attractive, the length of the B key auxiliary pressing plate 10 is long, and the pressing operation is convenient.

The above description is only for the specific embodiments of the present invention, but not for the scope of the present invention, all equivalent changes or modifications made according to the design spirit of the present invention should be considered as falling into the scope of the present invention.

Claims

1. A flute B tail pipe is characterized in that: the tail pipe comprises a tail pipe body extending from left to right, wherein a first sound hole is formed in the rear side face of the left end of the tail pipe body, a second sound hole, a third sound hole and a fourth sound hole are formed in the front side face of the middle of the tail pipe body at intervals, a first key cover, a second key cover, a third key cover and a fourth key cover which can be opened and closed are correspondingly arranged on the first sound hole, the second sound hole, the third sound hole and the fourth sound hole respectively, a D # auxiliary key extending from back to front is arranged on the top face of the left end of the tail pipe body, a B key auxiliary cross rod, a C key movable wheel and a C # auxiliary key are arranged on the right side of the D # auxiliary key adjacently and sequentially from back to front, a B key auxiliary pressing plate extending from back to front is arranged adjacently on the right side of the D # auxiliary key, the right end of the B key auxiliary cross rod and the upper end of the B key auxiliary pressing plate are integrally formed or, the D # auxiliary key is fixedly connected with the first key cover through a first rotating shaft, the C # auxiliary key is fixedly connected with the second key cover through a second rotating shaft, the C key movable wheel is fixedly connected with the third key cover through a third rotating shaft, the B key auxiliary cross rod and the B key auxiliary pressing plate are fixedly connected with the fourth key cover through a fourth rotating shaft, when the B key auxiliary pressing plate moves downwards, the C key movable wheel and the C # auxiliary key move downwards in an all-linkage mode, and when the C key movable wheel moves downwards, the C # auxiliary key moves downwards in a linkage mode.

2. The flute B tailpipe of claim 1, wherein: the top surface of the D # auxiliary key, the top surface of the B # auxiliary cross rod, the top surface of the B # auxiliary pressing plate and the top surface of the C # auxiliary key are positioned on the same plane.

3. The flute B tailpipe of claim 2, wherein: the top surface of the B key auxiliary rod is connected with the top surface of the B key auxiliary pressing plate in a smooth transition mode.

4. A flute B tailpipe according to claim 3, characterized in that: the B key auxiliary rod is an upward convex arc extending from right to left.

5. A flute B tailpipe according to any one of claims 1-4, characterized in that: the auxiliary C # key and the second rotating shaft are provided with a B & C # linkage plate between, the C key movable wheel and the third rotating shaft are provided with a B & C linkage plate between, the B & C # linkage plate and the B & C linkage plate are both positioned below the auxiliary B key pressing plate, and the lower surface of the auxiliary B key pressing plate is respectively abutted to the upper surface of the B & C # linkage plate and the upper surface of the B & C linkage plate in a releasable manner.

6. The flute B tailpipe of claim 5, wherein: the rear side edge of the B & C # linkage plate is provided with a C & C # linkage plate protruding backwards, the C & C # linkage plate is located below the B & C # linkage plate, and the lower surface of the B & C # linkage plate is in releasable abutting contact with the upper surface of the C & C # linkage plate.

7. A flute B tailpipe according to any one of claims 1-4, characterized in that: the front end of the B key auxiliary pressing plate is flush with the front end of the C # auxiliary key.