CN209980759U - Key capable of realizing semi-scale sliding performance and pedal lever transmission mechanism thereof - Google Patents
Key capable of realizing semi-scale sliding performance and pedal lever transmission mechanism thereof Download PDFInfo
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- CN209980759U CN209980759U CN201920382687.8U CN201920382687U CN209980759U CN 209980759 U CN209980759 U CN 209980759U CN 201920382687 U CN201920382687 U CN 201920382687U CN 209980759 U CN209980759 U CN 209980759U
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Abstract
The utility model discloses a key capable of realizing semi-scale sliding performance and a pedal lever transmission mechanism thereof, wherein the key comprises a white key representing basic tone and a black key representing variable tone, and the black key is formed by overlapping the upper part of the black key and the lower part of the black key with the same width from top to bottom; the upper surface of the lower part of the black key is flush with the upper surface of the white key; a groove in the width direction is formed in the upper surface of the upper part of the black key close to the rear part, and the bottom surface of the upper part of the black key can slide for a certain distance in the front and rear direction on the upper surface of the lower part of the black key along the length direction; the pedal lever transmission mechanism comprises a pedal, a long rod, a cross rod, a transmission square shaft, a semitone button and a key pressing plate, wherein the lower part of the semitone button is arranged in a groove in the upper part of the black key, and the upper part of the black key is stirred by the groove to slide forwards and backwards. The utility model can not only provide the performance mode of the chromatic scale with smooth and smooth performance, but also recover the traditional performance mode; simple structure and convenient operation.
Description
Technical Field
The utility model belongs to the piano machinery field, concretely relates to key and footboard lever drive mechanism that can realize performance of chromatic scale glide.
Background
The black and white keyboard has wide application, and pianos, electronic organs, electric pianos, organs, accordion and the like belong to the keyboard musical instruments. The various keyboard musical instruments are substantially the same in layout design of black and white keys, except for the difference in the size and number of keyboards. Therefore, the present invention is described by taking a representative standard 88-key piano as an example without causing ambiguity. The 88-key piano comprises seven complete octave ranges, each range is a tone group, and the tones facing the piano are respectively called big character two groups C2, big character one groups C1, big character groups C, small character groups C1, small character two groups C2, small character three groups C3, small character four groups C4 and small character five groups C5 from left to right. Except that C2 has only three keys (a2, # a2, B2), and C5 has only one key (C5), the other seven tone groups all contain a full octave, and all have white keys representing seven basic steps and five black keys representing five varying steps, and if not in large or small writing, the seven white keys represent the same pitch name as CDEFGAB, and the five black keys represent the same pitch name as # C # D # F # G # a, which together form 12 consecutive chromatic scales, that is: c- # C-D- # D-E-F- # F-G- # G-A- # A-B, which conforms to the twelve-fold equal law.
In order to meet the requirement of common playing, black and white keys of the piano are designed to be different in length and height; the black keys are higher than the white keys by about one centimeter, and the length of the black keys is shorter than that of the white keys; the black keys are designed integrally, most of the black keys are made of wood or plastic, and a piece of solid wood or plastic is glued on the wood black keys, so that the black keys have the functions of finger touch comfort and attractive surface and belong to an integral design; the white keys are arranged on the front row of the keyboard frame, and the black keys are arranged on the rear row of the keyboard frame in an inserting mode, so that although the identification is convenient, the playing is convenient, the span for grabbing the keyboard by one hand is increased, and the chord of more than one octave can be played instantly, the important inherent defect is brought, namely the playing of the long string of chromatic scale sliding tones with any tone is very difficult. However, the fast performance of the sliding of the chromatic scale is a very rich personality and charm place of keyboard instruments such as pianos, the personality and the charm need to be well expressed, the existing keyboard design with black, high and white and low can only meet the performance of the sliding of the chromatic scale (C major key or a minor key) on white keys on the same plane, the performance of the sliding of the chromatic scale cannot be realized, the piano tone is very suitable for the sliding of the chromatic scale, the sliding of the piano tone on uneven keys by fingers is almost impossible, and only one possible method is painstaking training to achieve the effect of the performance of the chromatic scale, but the fast playing instead of the sliding can be finally realized. For example, to play a simple chromatic scale glide of the C major octave, the keys must be pressed in the sequence of white-black-white-black-white keys, any two adjacent keys are in semitone relationship, and since the black and white keys are one high and one low, it is anyhow impossible to play on the keyboard. The existing method can only train out the dragonfly point-water playing on the high and low key surfaces like flying fast fingers through painstaking, and even if the level, the speed, the uniformity and the fluency of a professional player are difficult to reach an ideal state, for example, the performance of a chromatic scale with three degrees is limited by playing with two fingers with one hand, and the playing with two fingers with two hands has the upper limit of the speed and the uniformity; it is very difficult for many professional piano actors.
The purpose of playing should not be too much on the dazzling skill, and the ultimate purpose should be to express the thought and emotion of the work. At present, all keyboard instruments are designed in a traditional mode with alternate black and white and staggered high and low, although the defects cannot be overcome, the design with high black and white and the design with high black and white have defects all the time, namely the smooth performance of chromatic scale sliding is seriously hindered, and the training effort of amateur or professional players is greatly increased. Strictly speaking, this is a place where the current keyboard musical instrument is not beautiful enough, and should be improved.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the defects of the prior art, the keys and the pedal lever transmission mechanism thereof capable of realizing the performance of the chromatic scale sliding are specially designed, so that a chromatic scale sliding performance mode can be quickly provided, the playing of chromatic scale is more convenient and smooth, and the traditional performance mode can be completely recovered; simple structure and convenient operation.
The technical scheme is as follows: a key enabling a performance of a chromatic scale with a sliding note includes white keys representing basic steps and black keys representing varying steps; the black key is changed from the traditional integrated design into a split design consisting of an upper part and a lower part, and is formed by overlapping the upper part (also called as a semitone key) of the black key and the lower part of the black key with the same width from top to bottom; the upper surface of the lower part of the black key is flush with the upper surface of the white key, and the height of the upper part of the black key is the same as or similar to the height of the traditional black key higher than the white key; the upper part of the black key is connected with the lower part of the black key in a sliding way, a groove in the width direction is arranged on the upper surface of the upper part of the black key close to the rear part, and the bottom surface of the upper part of the black key can slide for a certain distance in the front and rear direction of the upper surface of the lower part of the black key along the length direction.
Preferably, the bottom surface of the upper part of the black key is provided with an inwards concave sliding groove, the upper surface of the lower part of the black key is provided with a bulge corresponding to the sliding groove, the length of the bulge is smaller than that of the sliding groove, but the width of the bulge is matched with that of the sliding groove, and the bulge and the sliding groove are tightly and smoothly contacted to reduce sliding resistance and noise;
the sliding grooves and the bulges can also be designed in an opposite arrangement mode, namely the bottom surface of the upper part of the black key is provided with the bulges, and the upper surface of the lower part of the black key is provided with the sliding grooves corresponding to the bulges.
Preferably, a pair of magnets which attract each other are respectively arranged at corresponding positions of the bottom surface of the upper part of the black key and the upper surface of the lower part of the black key, so that the upper part of the black key and the lower part of the black key can be reliably overlapped.
Preferably, the distance that the bottom surface of the upper part of the black key slides back and forth on the upper surface of the lower part of the black key along the length direction is 15-35 mm, and the distance is also the length difference between the protrusion and the sliding groove.
When the keyboard instrument is in an initial state, the upper part of the black key and the lower part of the black key are completely overlapped in the length direction, the distance between the front end of a chute at the upper part of the black key and the front end of a bulge at the lower part of the black key is 15-35 mm, the rear end of the chute at the upper part of the black key and the rear end of the bulge at the lower part of the black key are mutually attached, the bottom surface at the upper part of the black key and a pair of magnets on the upper surface at the lower part of the black key are vertically attached, at the moment, the black key formed by completely overlapping the upper part of the black key and the lower part of;
when the grooves on the upper parts of the black keys drive the upper parts of the black keys to slide backwards by 15-35 mm under the action of external force, the front ends of the chutes on the upper parts of the black keys are attached to the front ends of the bulges on the lower parts of the black keys, and the rear ends of the chutes on the upper parts of the black keys are 15-35 mm away from the rear ends of the bulges on the lower parts of the black keys, at the moment, the upper parts of the black keys and the lower parts of the black keys form a staggered state in the length direction, a semitone playing area with the length of 15-35 mm is exposed at the front ends of the lower parts of the black keys, the semitone playing area and the white keys are positioned on the same plane, the keyboard musical instrument is switched into a semitone slide playing mode, and a player can perform semitone slide playing quickly and smoothly on the; if the groove at the upper part of the black key drives the upper part of the black key to slide forwards by 15-35 mm under the action of external force, the upper part of the black key and the lower part of the black key return to a completely overlapped state in the length direction, and the keyboard musical instrument returns to the traditional playing mode;
when the arrangement of the sliding groove and the protrusion is changed, the description is changed correspondingly;
preferably, for the reasons of playing comfort, attractiveness and the like, a shallow groove is formed in the corresponding position of the semitone playing area in a downward concave mode, a piece of solid wood or plastic is glued on the shallow groove, and the upper surface of the solid wood or plastic and the upper surface of the white key are located on the same plane.
The utility model also discloses a pedal lever transmission mechanism of the key capable of realizing the performance of the semitone scale sliding sound, which comprises a left pedal, a right pedal, a left long rod, a right long rod, a left cross rod, a right cross rod, a transmission square shaft, a plurality of semitone buttons and a key pressing plate, wherein the pedals are connected with the long rods at the same side, and the long rods are close to the bottoms of the cross rods at the same side; the plurality of semitone buttons are arranged in semitone button notch grooves formed in the key pressing plate, the left cross rod and the right cross rod are embedded in cross rod notch grooves corresponding to the left end and the right end of the key pressing plate, and the transmission square shaft coaxially penetrates through the cross rods and the semitone buttons in the key pressing plate; the lower part of the semitone button is arranged in the groove on the upper part of the black key, and the upper part of the black key is shifted to slide forwards and backwards through the groove.
The long rod can also be hinged with the cross rod on the same side through a pin shaft;
any one of the left pedal and the right pedal can be stepped on and released to complete the switching-in and the switching-out of the chromatic scale sliding tone playing mode; the design of the left pedal, the right pedal, the long rod and the cross rod facilitates the operation of a player when any one foot is convenient.
Preferably, a square hole is formed in the semitone button and matched with the transmission square shaft, the transmission square shaft drives the semitone button to rotate by the same angle when rotating, and the upper part of the black key is shifted by a distance in a front-back sliding mode through the groove.
Preferably, three black keys and two black keys are pressed at corresponding positions on the key pressing plate to form semitone button notch grooves with different sizes in a group, so that semitone buttons with different specifications can be embedded and installed in the semitone button notch grooves; the key pressing plate is also internally provided with a round hole and an inner sleeve with a small friction coefficient, so that the key pressing plate can conveniently penetrate through the transmission square shaft and reduce abrasion; the left end and the right end of the key pressing plate are also provided with longitudinal cross rod notches, so that the left cross rod and the right cross rod can be conveniently embedded in the notches; thus, the key pressing plate with the semitone button notch groove, the cross rod notch groove, the round hole and the inner sleeve is opened, the functions of key pressing, decoration and the like of the original key pressing plate are still kept on the whole, and meanwhile, the mounting support for the semitone button, the cross rod and the transmission square shaft is also an installation support for the semitone button, the cross rod and the transmission square shaft, has multiple functions and is simple, practical and attractive in structure.
Preferably, the transmission square shaft is made of metal materials, the section of the transmission square shaft is a square enlarged fillet, the semitone button can be driven to rotate, and the transmission square shaft can rotate in the round hole of the key pressing plate and the inner sleeve.
Preferably, a square hole is processed at the front end of the cross rod, so that a transmission square shaft can be conveniently installed; the selection of the material of the cross bar is not limited, but only the proper weight is considered; if the weight is not enough, a method of adding a spring can be considered to replace the weight, so that the transverse rod and the transmission square shaft can rotate reversely after the pedal is loosened and the long rod descends, and the upper parts of all the black keys are in a state of being overlapped with the lower parts of the black keys; the left and right cross rods are respectively embedded into cross rod notches formed at the left and right ends of the key pressing plate, and square holes in the assembled cross rods are coaxial with round holes in the key pressing plate.
Preferably, the inner wall of the groove at the upper part of the black key, which is contacted with the semitone button, and the contact parts of the lower part of the pedal, the long rod and the cross rod are required to be pasted with felt, so that the quietness of the action of the transmission mechanism when the pedal is treaded down and released is facilitated.
When the music instrument is played, the pedal is stepped, the long rod jacks up the cross rod, the cross rod drives the square shaft and the semitone button to rotate, the upper part of the black key is shifted through the groove to slide backwards, and the upper part of the black key and the lower part of the black key are staggered, so that a semitone sliding playing mode is started; after the performance of the chromatic scale sliding tones is finished, the pedal is loosened, the long rod descends, and the cross rod drives the transmission square shaft and the chromatic button to rotate reversely under the action of gravity or spring force, so that the upper parts of the black keys slide forwards, the upper parts of the black keys are overlapped with the lower parts of the black keys, and the initial traditional performance mode is completely recovered.
Has the advantages that: the utility model discloses only need the operation of button or a footboard once, alright in order not to cause under the condition of any essential influence original key and performance custom, provide the best chromatic scale smooth tone and play the mode, loosen the footboard, the keyboard can resume traditional keyboard state fast under footboard lever drive mechanism's effect.
Drawings
Fig. 1 is a perspective schematic view of an upper part of a black key according to a first embodiment of the present invention;
fig. 2 is a schematic perspective view of a lower part of a black key according to a first embodiment of the present invention;
fig. 3 is a perspective view schematically illustrating an upper portion of the black key shown in fig. 1 turned 90 ° backward.
Fig. 4 is a perspective view of the black key upper part and the black key lower part completely overlapped according to the embodiment of the present invention (conventional performance mode).
Fig. 5 is a perspective view of the case where the upper part and the lower part of the black key are misaligned (half-scale-pitch-bend performance mode) according to the embodiment of the present invention.
Fig. 6 is a perspective schematic view of an upper part of a black key according to a second embodiment of the present invention;
fig. 7 is a schematic perspective view of a lower part of a black key according to a second embodiment of the present invention;
fig. 8 is a perspective view schematically illustrating the upper portion of the black key shown in fig. 6 turned 90 ° backward.
Fig. 9 is a perspective view schematically showing the second embodiment of the present invention when the upper black keys and the lower black keys are completely overlapped (conventional performance mode).
Fig. 10 is a perspective view schematically showing the misalignment between the upper part of the second black key and the lower part of the second black key according to the embodiment of the present invention (half-scale polyphony performance mode).
Fig. 11 is a perspective schematic view of the key installation of the present invention.
Fig. 12 is a front perspective schematic view of the key and pedal lever transmission mechanism assembly of the present invention.
Fig. 13 is a schematic perspective view of the key and pedal lever transmission mechanism assembly side of the present invention.
Fig. 14 is a schematic view of the installation and arrangement of the pedal lever transmission mechanism of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 11, a key capable of performing a chromatic step of a musical instrument includes a white key 1 representing a basic scale and a black key 2 representing a variable scale, the white key 1 being disposed in a front row of a keyboard frame, the black key 2 being inserted in a rear row of the keyboard frame, the black key 2 being higher than the white key 1 and shorter than the white key 1; the black keys 2 are formed by overlapping black key upper parts 21 (semitone keys) and black key lower parts 22 with the same width from top to bottom; the upper surface of the black key lower portion 22 is flush with the upper surface of the white key 1, and the height of the black key upper portion 21 is the same as or similar to the height of a conventional black key above the white key; the black key upper part 21 is slidably connected with the black key lower part 22, a groove 210 in the width direction is formed in the rear part of the upper surface of the black key upper part 21, and the bottom surface of the black key upper part 21 can slide a certain distance in front of and behind the upper surface of the black key lower part 22 along the length direction.
The bottom surface of the upper part 21 of the black key is provided with an inwards concave sliding groove 211, the upper surface of the lower part 22 of the black key is provided with a protrusion 221 corresponding to the sliding groove, the length of the protrusion 221 is smaller than that of the sliding groove 211, but the width of the protrusion 221 is matched with that of the sliding groove 211, and the contact between the protrusion 221 and the sliding groove 211 is tight and smooth, so that the sliding resistance and noise are reduced.
A pair of magnets 4 which are mutually attracted are respectively arranged and installed at corresponding positions of the bottom surface of the black key upper part 21 and the upper surface of the black key lower part 22, so that the reliable superposition of the black key upper part 21 and the black key lower part 22 is facilitated.
The distance that the bottom surface of the black key upper part 21 slides forwards and backwards on the upper surface of the black key lower part 22 along the length direction is 15-35 mm, and the distance is also the length difference between the protrusion 221 and the sliding groove 211.
The specific form of the sliding connection between the black key upper part 21 and the black key lower part 22 can be various, in the first embodiment, the sliding groove 211 and the protrusion 221 have a triangular vertical section (as shown in fig. 1 to 5), and in the second embodiment, the sliding groove 211 and the protrusion 221 have a semi-cylindrical vertical section (as shown in fig. 6 to 10).
The sliding grooves 211 and the protrusions 221 may be designed in an opposite arrangement, that is, the bottom surface of the black key upper portion 21 is provided with the protrusions 221, and the upper surface of the black key lower portion 22 is provided with the sliding grooves 211 corresponding to the protrusions 221.
When in an initial state, the black key upper part 21 and the black key lower part 22 are completely overlapped in the length direction, the distance between the front end of the sliding groove 211 of the black key upper part 21 and the front end of the protrusion 221 of the black key lower part 22 is 15-35 mm, the rear end of the sliding groove 211 of the black key upper part 21 and the rear end of the protrusion 221 of the black key lower part 22 are mutually attached, the bottom surface of the black key upper part 21 and the pair of magnets 4 on the upper surface of the black key lower part 22 are vertically attached, at this time, the shape of the black key 2 formed by completely overlapping the black key upper part 21 and the black key lower part 22 is the same as or similar to that of a conventional black key, and the keyboard instrument is in a conventional playing mode (as shown in fig;
when the groove 210 of the upper black key 21 drives the upper black key 21 to slide backwards by 15-35 mm under the action of an external force, the front end of the chute 211 of the upper black key 21 is attached to the front end of the protrusion 221 of the lower black key 22, and the distance between the rear end of the chute 211 of the upper black key 21 and the rear end of the protrusion 221 of the lower black key 22 is 15-35 mm, at this time, the upper black key 21 and the lower black key 22 form a dislocation state in the length direction, the front end of the lower black key 22 is exposed to a semitone playing area 222 with a length of 15-35 mm, the semitone playing area 222 and the white key 1 are in the same plane, the keyboard instrument is switched to a semitone playing mode, and a player can perform a semitone sliding performance quickly and smoothly on the white key 1 and the semitone playing area 222 exposed from the lower black key 22 in the same plane (as shown in fig. 5 and 10); if the groove 210 of the upper black key 21 drives the upper black key 21 to slide forward 15-35 mm under the action of external force, the upper black key 21 and the lower black key 22 return to the completely overlapped state in the length direction, and the keyboard instrument returns to the conventional playing mode (as shown in fig. 4 and 9).
When the arrangement of the slide groove 211 and the projection 221 is interchanged, the above description is changed accordingly.
For the reasons of playing comfort, attractiveness and the like, a shallow groove is formed in the corresponding position of the semitone playing area 222 in a downward concave mode, a piece of solid wood or plastic 223 is glued on the shallow groove, and the upper surface of the solid wood or plastic 223 and the upper surface of the white key 1 are located on the same plane.
The utility model also discloses a pedal lever transmission mechanism of the key capable of realizing the performance of the chromatic scale sliding sound, which comprises a left pedal 5, a right pedal 5, a left long rod 6, a right long rod 7, a transmission square shaft 8, a plurality of semitone buttons 9 and a key pressing plate 10, wherein the pedals 5 are connected with the same long rod 6, and the long rod 6 is close to the bottom of the same horizontal rod 7; the semitone buttons 9 are arranged in semitone button notch grooves 101 formed in the key pressing plate 10, the left cross rod 7 and the right cross rod 7 are embedded in cross rod notch grooves corresponding to the left end and the right end of the key pressing plate 10, and the transmission square shaft 8 coaxially penetrates through the cross rods 7 and the semitone buttons 9 in the key pressing plate 10; the lower part of the semitone button 9 is placed in the groove 210 of the black key upper part 21, and the black key upper part 21 is shifted to slide back and forth through the groove 210 (as shown in fig. 11, 12, 13 and 14).
The long rod 6 can also be hinged with the cross rod 7 at the same side through a pin shaft;
the switching-in and the switching-out of the chromatic scale sliding tone playing mode can be completed by stepping on and releasing any one of the left pedal 5 and the right pedal 5; the design of the left pedal 5, the right pedal 5, the long rod 6 and the cross rod 7 is convenient for a player to operate when any one foot is convenient.
A square hole is formed in the semitone button 9 and matched with the transmission square shaft 8, the transmission square shaft 8 drives the semitone button 9 to rotate by the same angle when rotating, and the black key upper portion 21 is shifted to slide back and forth by a distance through the groove 210.
Three black keys and a group of two black keys are pressed at corresponding positions on the key pressing plate 10 to form semitone button notch grooves 101 with different sizes respectively, so that semitone buttons 9 with different specifications can be embedded and installed in the semitone button notch grooves; the semitone button 9 is made of the existing material, a large-size semitone button 9A is assembled corresponding to three black keys, and a small-size semitone button 9B is assembled corresponding to two black keys (as shown in figures 11 and 12); the key pressing plate 10 is also internally provided with a round hole and an inner sleeve with a small friction coefficient, so that the key pressing plate can conveniently penetrate through the transmission square shaft 8 and reduce abrasion; the left end and the right end of the key pressing plate 10 are also provided with longitudinal cross rod notches, so that the left cross rod 7 and the right cross rod 7 can be conveniently embedded in the notches; thus, the semitone button notch groove 101, the cross rod notch groove, the round hole and the key pressing plate 10 of the inner sleeve are opened, the functions of key pressing, sound insulation, dust prevention, decoration and the like of the original key pressing plate are still kept on the whole, meanwhile, the mounting supports of the semitone button 9, the cross rod 7 and the transmission square shaft 8 are combined into a whole, and the structure is simple, practical and attractive. In practice, the black keys 2 are designed to be grouped into two or three groups, and 36 black keys 2 are divided into a plurality of groups; taking an 88-key piano as an example, seven notch grooves 101 suitable for the sizes of a large-size semitone button 9A and a small-size semitone button B are required to be processed on the key pressing plate 10; in addition, because the lowest tone group only has one black key (the name # A), a small groove is separately formed at the position of the key pressing plate 10 corresponding to the key, and the width is about 10-12 mm.
The transmission square shaft 8 is made of metal materials, the section of the transmission square shaft is square and increases a round angle, the semitone button 9 can be driven to rotate, and the transmission square shaft can rotate in the round hole of the key pressing plate 10 and the inner sleeve.
A square hole is processed at the front end of the cross rod 7, so that a transmission square shaft 8 can be conveniently arranged; the choice of material for the cross-bar 7 may be unlimited, only a suitable weight need be considered; if the weight is not enough, the spring can be added instead, so that the transverse rod 7 and the transmission square shaft 8 can rotate reversely after the pedal 5 is released and the long rod 6 descends, and all the black key upper parts 21 are in a state of being overlapped with the black key lower parts 22.
The inner wall of the groove 210 of the upper part 21 of the black key, which is contacted with the semitone button 9, and the contact parts of the lower part of the pedal 5, the long rod 6 and the cross rod 7 are required to be pasted with felt, so that the quietness of the action of the transmission mechanism when the pedal 5 is stepped on and released is facilitated.
The assembling method of the pedal lever transmission mechanism of the key capable of realizing the performance of the chromatic scale sliding tone comprises the following steps:
(1) flatly placing a key pressing plate 10 which passes through a semitone button notch groove 101, a cross rod notch groove, a round hole and an inner sleeve on a workbench surface, slowly penetrating a transmission square shaft 8 from the round hole at one end of the key pressing plate, longitudinally embedding a cross rod 7 from the rear parts of two ends of the key pressing plate 10 when the transmission square shaft 8 reaches the position of the cross rod notch groove, stopping when the transmission square shaft 8 penetrates through a square hole at the end part of the cross rod 7 and then continuously penetrates to reach a notch of the semitone button notch groove 101, then placing a semitone button 9 (a large semitone button 9A or a small semitone button 9B) into a corresponding notch, continuously penetrating after aligning the transmission square shaft 8 with the square hole on the semitone button 9, and sequentially placing all the semitone buttons 9; finally, the transmission square shaft 8 penetrates through the cross rod 7 at the other end and the tail end of the key pressing plate 10;
(2) all black key lower portions 22 are installed in place in a conventional manner and location;
(3) mounting all the black key upper portions 21 to the upper surfaces of the black key lower portions 22 in complete coincidence;
(4) the assembled key pressing plate 10 is horizontally and vertically put down, all the semitone buttons 9 are aligned with the semitone button notch grooves 101, the lower parts of the semitone buttons 9 are all arranged in the corresponding grooves 210 of the upper parts 21 of the black keys, the key pressing plate 10 is lightly put down, and then the two ends of the key pressing plate 10 are fixed on a piano frame by screws according to the traditional method;
(5) the pedals 5 and the long rods 6 at the left end and the right end are installed, and the assembly is completed, as shown in figures 12, 13 and 14.
When the musical instrument is played, in the selection of the performance mode of the chromatic scale, the fingers can press the chromatic button 9 to enable part or all of the upper parts 21 of the black keys to respectively slide backwards, and the musical instrument is suitable for playing the chromatic scale phrase which is not too long; the finger can press the semitone button 9 to make the upper part 21 of a group of black keys slide, is based on the reasonable interference design of the square hole in the semitone button 21 and the transmission square shaft 8, and can also be designed according to the one-way transmission principle of the rear chain wheel of the bicycle, and the detailed description is omitted; the long series of continuous chromatic step-like performance can be satisfied by sliding a part or all of the black key upper portions 21 backward by depressing the pedal 5. Namely, the length of the note can be freely selected, and when the chromatic scale is shorter, one or two semitone buttons 9 corresponding to the height of the note can be manually pressed to finish playing; when the chromatic scale is long, the pedal 5 can be selectively depressed to complete the backward movement of the whole upper part 21 of the black key in the polyphonic group region. In a word, the switching operation of the playing modes can be completed quickly and conveniently by one time of button or one time of foot stepping.
When the black key upper part 21 is slid backward by a certain stroke, the semitone performance 222 of the black key lower part 22 covered by the black key upper part 21 becomes visible (fig. 5, 10, 11, 12), the semitone performance area 222 is on the same plane as all the white keys 1 (if the solid wood or plastic 223 is stuck thereon, the upper surface of the solid wood or plastic 223 is on the same plane as the upper surface of the white keys 1), so that the single-finger sliding performance of the semitone scale is realized, and the whole semitone scale sliding performance of 88 keys from the lowest tone a2 to the highest tone c5 can be realized by a common player. It should be noted that, in fig. 11 and 12, three black key groups and large-scale semitone buttons 9A and two black key groups and small-scale semitone buttons 9B are respectively placed in the chromatic scale playing mode and the conventional playing mode, so that the action states of the upper black keys 21 in the two modes are compared in one drawing, and in a real situation, different combinations of the black keys and the semitone buttons can be in the chromatic scale playing mode and can be restored to the conventional playing mode.
The utility model provides a new mode for the keyboard musical instrument in the performance of the chromatic scale, and provides a simpler, more convenient and more efficient selection of the performance technology and the expressive force of the chromatic scale; on the one hand, players can develop more comfortable playing skills and play the harmony of multiple double-voice parts and even multiple voice parts with multiple fingers. For example, when playing the right-hand single tone of the 'ai li si caused' to descend to the chromatic scale, anyone can easily play the music by scratching with a single finger, and the speed can be freely mastered; when playing the minor third descending chromatic scale of 'Egypt' of Mark Semu style, both hands and one hand can easily work, and the training is not required to be done on the long chromatic scale. The utility model discloses on the performance of the fast smooth sound of chromatic scale of long cluster, the effect is most obvious. Thus, an excellent player can put more energy on the performance; meanwhile, composers can also add the semitone effect to the place needed by the creation more without hesitation, and do not need to consider whether professional actors get the effect or not. The playing of complex chromatic scales is difficult for non-professional players to play fast continuous chromatic scales (up-down pitch) with both hands or one hand; if the pitch-sliding is long and the speed is required to be fast, the technical player is also difficult. The difficulty is greater if strength and uniformity are required. The utility model discloses then can realize that both hands list indicates that the glide is played to upper and lower high efficiency, plays like this and compare traditional glide and play the skill, and not only the dynamics is controllable, the duration is even, and speed can better master moreover.
In a word, based on the utility model, richer skills and techniques can be produced, which is more beneficial to the improvement of the expressive force of the players, and the players can exert the full play in the future; meanwhile, the music creation can be more widely expanded, and a composer can consider the problem of difficulty in playing the continuous chromatic scale in the aspect of quick performance.
The above is only to choose the preferred embodiment of the present invention to explain the present invention in further detail, the present invention also has other applications or combinations, which can be selected according to specific requirements, and it cannot be considered that the present invention is limited to these explanations. For those skilled in the art to which the invention pertains, equivalent substitutions or modifications may be made without departing from the spirit of the invention, and all such equivalents, as may be used in the same or similar manner, are deemed to fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. A key capable of realizing a semi-scale sliding performance is characterized by comprising a white key representing a basic scale and a black key representing a variable scale, wherein the black key is changed from a traditional integrated design into a split design consisting of an upper part and a lower part and is formed by overlapping the upper part and the lower part of the black key from top to bottom, and the widths of the upper part and the lower part of the black key are the same; the upper surface of the lower part of the black key is flush with the upper surface of the white key, and the height of the upper part of the black key is the same as the height of the traditional black key higher than the white key; the upper part of the black key is connected with the lower part of the black key in a sliding way, a groove in the width direction is arranged on the upper surface of the upper part of the black key close to the rear part, and the bottom surface of the upper part of the black key can slide for a certain distance in the front and rear direction of the upper surface of the lower part of the black key along the length direction.
2. The key capable of realizing a chromatic sliding musical performance of claim 1, wherein the bottom surface of the upper part of the black key is provided with an inward-concave sliding groove, the upper surface of the lower part of the black key is provided with a protrusion corresponding to the sliding groove, the length of the protrusion is less than that of the sliding groove, but the width of the protrusion is matched with that of the sliding groove, and the contact between the protrusion and the sliding groove is tight and smooth; the sliding grooves and the protrusions can be arranged oppositely, namely, the protrusions are arranged on the bottom surface of the upper portion of the black key, and the sliding grooves corresponding to the protrusions are arranged on the upper surface of the lower portion of the black key.
3. The key for realizing a chromatic sliding performance of a chromatic scale of claim 2, wherein a pair of magnets attracting each other are installed at corresponding positions on the bottom surface of the upper portion of the black key and the upper surface of the lower portion of the black key, respectively, to facilitate reliable superposition of the upper portion of the black key and the lower portion of the black key.
4. The key for enabling a chromatic sliding performance of claim 2, wherein the bottom surface of the upper portion of the black key slides back and forth along the length direction on the upper surface of the lower portion of the black key by a distance of 15 to 35 mm, which is also a difference in length between the protrusion and the sliding groove.
5. The key of claim 4, wherein in an initial state, the upper portion of the black key and the lower portion of the black key are completely overlapped in a length direction, a distance between a front end of the sliding groove of the upper portion of the black key and a front end of the protrusion of the lower portion of the black key is 15-35 mm, a rear end of the sliding groove of the upper portion of the black key and a rear end of the protrusion of the lower portion of the black key are attached to each other, and a pair of magnets on a bottom surface of the upper portion of the black key and an upper surface of the lower portion of the black key are attached to each other in an up-down manner, and at this.
6. The key of claim 4, wherein when the groove of the upper portion of the black key is forced to slide backward by 15-35 mm, the front end of the sliding groove of the upper portion of the black key is engaged with the front end of the protrusion of the lower portion of the black key, and the distance between the rear end of the sliding groove of the upper portion of the black key and the rear end of the protrusion of the lower portion of the black key is 15-35 cm, the upper portion of the black key and the lower portion of the black key are displaced in the length direction, the front end of the lower portion of the black key is exposed to a half-tone playing area with a length of 15-35 mm, the half-tone playing area and the white key are located on the same plane, and the keyboard instrument is switched to the half-tone sliding mode.
7. The key of claim 6, wherein a shallow groove is recessed in a position corresponding to the semi-fretted music playing area, a piece of solid wood or plastic is glued on the shallow groove, and the upper surface of the solid wood or plastic and the upper surface of the white key are in a same plane.
8. A pedal lever transmission mechanism of a key for enabling a performance of a chromatic sliding musical scale according to any one of claims 1 to 7, comprising left and right pedals, left and right long bars, left and right cross bars, a transmission square shaft, a plurality of semitone buttons, and a key-pressing plate, wherein the pedals are connected to the long bars on the same side, and the long bars are abutted against the bottoms of the cross bars on the same side; the plurality of semitone buttons are arranged in semitone button notch grooves formed in the key pressing plate, the left cross rod and the right cross rod are embedded in cross rod notch grooves corresponding to the left end and the right end of the key pressing plate, and the transmission square shaft coaxially penetrates through the cross rods and the semitone buttons in the key pressing plate; the lower part of the semitone button is arranged in the groove on the upper part of the black key, and the upper part of the black key is shifted to slide forwards and backwards through the groove.
9. The pedal lever transmission mechanism of keys capable of realizing a chromatic step of a sliding musical performance according to claim 8, wherein the notch grooves of chromatic buttons with different sizes are formed in a group of three black keys and two black keys by pressing the key pressing plate at corresponding positions so as to facilitate the embedding and mounting of chromatic buttons with different specifications; the key pressing plate is also internally provided with a round hole and an inner sleeve, so that the key pressing plate can conveniently penetrate through the transmission square shaft and reduce abrasion; the left end and the right end of the key pressing plate are provided with longitudinal cross rod notches, so that the left cross rod and the right cross rod can be conveniently embedded in the notches.
10. The pedal lever transmission mechanism of a key capable of performing a chromatic step of a sliding musical performance as claimed in claim 8, wherein the grooves on the upper part of the black key are adhered with felt on the inner wall of the semitone button, and the contact parts of the lower part of the pedal, the long rod and the cross rod.
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| CN201920382687.8U CN209980759U (en) | 2019-03-25 | 2019-03-25 | Key capable of realizing semi-scale sliding performance and pedal lever transmission mechanism thereof |
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| CN201920382687.8U CN209980759U (en) | 2019-03-25 | 2019-03-25 | Key capable of realizing semi-scale sliding performance and pedal lever transmission mechanism thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109887476A (en) * | 2019-03-25 | 2019-06-14 | 徐熙 | A kind of key and its foot pedal lever transmission mechanism that achievable chromatic scale glide is played |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109887476A (en) * | 2019-03-25 | 2019-06-14 | 徐熙 | A kind of key and its foot pedal lever transmission mechanism that achievable chromatic scale glide is played |
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