40results about "Accordians" patented technology

A portable keyboard system having a pair of keyboards rigidly secured to and directed outward from one another. The keyboard system is secured to a user with shoulder straps, which allow the user to control one keyboard with each hand. The keyboards are separately adjustable across several sound and intensity parameters.

A polyphonic, chromatic keyboard, whose notes are alternately distributed across two sub-keyboards arranged in thirds on each sub-keyboard. On each sub-keyboard, the notes are distributed across a tiling of basic triangles that is symmetrical from one sub-keyboard to the other and that peaks at one note, i.e. the major third thereof, and the minor third thereof. Thus, the quality of an interval, and consequently that of a chord or mode, does not vary with a nearby symmetry / translation. The harmonic material is represented by easily memorizable shapes. The relationships between chords are represented by geometrical movements. The keyboard can thus be a pedagogical aid for learning and understanding harmonic rules. The keyboard enables the user to play a bass line and a harmonic or melodic accompaniment simultaneously, feel the harmonic rhythm, and play with virtuosity. The keyboard can be fit onto a portable instrument, thus making it possible to play comfortably.

A multi-sided bellows cover has panel sections formed of extruded plastic panels in which rigid wall sections are connected at the fold lines by flexible web sections. The web sections are integrally molded by extrusion with at least one adjacent wall section, and many serial wall sections alternating with web sections may be integrally co-extruded with one another. Intermittently, a bead of one of the flexible web sections of one of the panel sections is captured in a slot of one of the rigid wall sections of another panel section.

The invention discloses an accordion bass machine, which comprises a top sheet, a top sheet nail, a rolling thread, a standing stake and a top rod. A mounting hole I corresponding to the position of the top piece nail is machined, and there is an interference fit between the top piece nail and the mounting hole I; the rolling thread is machined with a mounting hole II corresponding to the position of the pile, between the pile and the mounting hole II For an interference fit. The invention changes the connection form of the main transmission parts of the bass machine from welding to riveting, which originally required a lot of manpower to adjust after manual welding. Adjustment, stable connection and easy disassembly and replacement, convenient and fast assembly, high precision, low maintenance cost, can greatly improve the product quality and production efficiency of bass machines, and have significant economic and social value.

The invention discloses an accordion sound hole cover capable of being automatically leveled. The accordion sound hole cover capable of being automatically leveled is that a key rod slot connected with a key rod is processed in a sound hole cover body; the section of the key rod slot is in a shape of a revered trapezoidal structure of which the bottom side is relatively short; a transverse bulge which is vertical to the key rod slot is arranged in the middle part of the key rod slot. According to the accordion sound hole cover capable of being automatically leveled, the key rod slot is processed into the trapezoidal structure; the key rod can automatically fall down to the center of the key rod slot according to the self-fastening principle while being assembled to the sound hole cover; the transverse bulge vertical to the key rod is arranged in the middle part of the key rod slot; the key rod pressed into the key rod slot can only be in contact with the transverse bulge according to the lever supporting principle, and therefore, the sound hole cover can be automatically leveled, and the force on an area in which the bottom surface of the sound hole cover is in contact with a sound hole plate is uniform; in addition, stressing points of each sound hole cover are the same. The accordion sound hole cover adopting the structure above is able to automatically level and center, is simple in structure and convenient to operate, can greatly increase the product quality and production efficiency, and has obvious economic value and social value.

The invention discloses an accordion sound hole cover that can be automatically leveled. The sound hole cover body is processed with a key bar groove connected with the key bar. The cross-sectional shape of the key bar groove is an inverted trapezoidal structure with a short bottom , the middle part of the key rod groove is provided with a transverse protrusion perpendicular to the key rod groove. In the present invention, the key rod groove is processed into a trapezoidal structure, and the self-tightening principle is used to make the key rod and the sound hole cover automatically fall to the center position of the key rod groove when they are assembled, and the middle part of the key rod groove is arranged to be perpendicular to the key rod groove. Horizontal protrusion, using the principle of lever fulcrum, after the key rod is pressed into the key rod groove, it only contacts with the horizontal protrusion, thereby automatically leveling the sound hole cover, so that the force on the contact area between the bottom surface of the sound hole cover and the sound hole plate is even, And the stress point of each sound hole cover is the same. The structure of the invention can be automatically leveled and centered, has a simple structure, is convenient to operate, can greatly improve product quality and production efficiency, and has significant economic value and social value.

The invention relates to a keyboard wind instrument, a single valve type is adopted, a keyboard and a portamento structure are arranged on the frame with a plurality of flute chambers. A plurality of leaf valves which are arranged corresponding to a plurality of keys which forms the keyboard can close the air outlet parts of the corresponding flute chambers at the non-performing time, and the airoutlet parts are opened when performing. The portamento structure can temporarily reduce the pitch of the sound that is made to get the portamento effect and the portamento structure is arranged corresponding to the leaf valves which are positioned abreast, comprising: a valve pressure body, which can rotate flexibly and comprises a rotating shaft and a connection bar; an operation part, which can enable the valve pressure body to rotate towards the direction of the leaf valve; a force application part, which can enable the valve pressure body to regress to the initial position; a limiter, which can limit the rotation angle of the valve pressure body.

The invention discloses an integrated accordion bass machine, which comprises a top piece, a rolling thread, a top piece nail, a stake and a push rod. The top sheet is arranged in two layers, and all chord sound top sheets are processed with 4 top sheet nail mounting holes, and each chord sound top sheet is equipped with 3 top sheet nails corresponding to the controlled piles. The present invention adjusts the arrangement positions of the thread rolling and the top piece by integrating and optimizing the structure of the main transmission parts of the bass machine, greatly reduces the assembly difficulty of the bass machine, improves the assembly efficiency and the assembly quality; and unifies the top plate The specifications of components such as thread rolling and thread rolling are conducive to batch processing of parts, and the answer improves production efficiency, and the parts are highly interchangeable, convenient and fast to assemble, high in precision, and low in maintenance costs, which can greatly improve the product quality and production of bass machines. Efficiency has significant economic and social value.

The invention belongs to the field of accordion production and particularly relates to a rockcase accordion made of short carbon fiber reinforced resin matrix composite materials. The rockcase accordion comprises a keyboard, an air bellow, a bass and an accordion cover, wherein the keyboard, the air bellow and the bass are sequentially connected, the accordion cover is fixedly installed on the keyboard, and the keyboard is composed of a keyboard voice box, keys and keyboard metaphone devices. The keys and the keyboard metaphone devices are installed on the keyboard voice box, the bass is composed of a bass voice box, bass beans and bass metaphone devices, the bass beans and the bass metaphone devices are installed on the bass voice box, and the rockcase accordion is characterized in that the keyboard voice box is made of the short carbon fiber reinforced resin matrix composite materials in an integrally-formed mode, and the bass voice box is made of the short carbon fiber reinforced resin matrix composite materials in an integrally-formed mode. The rockcase accordion made of the short carbon fiber reinforced resin matrix composite materials has the advantages of being good in tone, light in weight, not easy to damage, easy to manufacture, low in cost and the like, and is highly innovative.

The invention relates to a button-shaped accordion conversion key terminal limiting device, comprising a bracket (1) and a limiting mechanism (2), the bracket (1) being installed on the sound board (3) of the accordion, and the limiting mechanism (2) There are two covers, and every set of limit mechanism (2) comprises a voice-changing movable sheet (21), an upper pull-out rod (22), a roller shaft (23), a lower pull-out rod (24), a sound-changing valve plate (25), a limiter Bit frame (26), fork (27), spring (28) and fork seat (29), one end of the phonation movable piece is connected with the phonation key of the accordion, and the other end is hinged with one end of the upper puller, and the upper puller The other end is fixedly connected with the roller, and the roller is installed on the two supports. One end of the lower lever is fixed with the roller (23), the other end is hinged with the end of the sound changing valve plate (25), and one end of the limit frame (26) is connected with the The roller (23) is fixed, the other end is hinged with the fork, the fork is hinged with the fork seat (29), the fork seat (29) is installed on the soundboard (3), and the spring (28) is sleeved on the fork ( 27) on. After the device is added, every time a tone-changing key is pressed, the best position can be accurately reached, so that the player can avoid problems such as channeling and automatic sound-changing when using it.

An accordion includes a right hand play side, a left hand play side, a bellow provided between the right hand play side and the left hand play side, and four rows of buttons provided on at least one of the right hand play side and the left hand play side. The four rows of buttons include a first column to which first continuous four pitches are assigned, a second column, provided adjacent to the first column, to which second continuous four pitches are assigned, the second continuous four pitches being adjacent to the first continuous four pitches, and a third column, provided adjacent to the second column, to which third continuous four pitches are assigned, the third continuous four pitches being adjacent to the second continuous four pitches.

An accordion includes a right hand play side, a left hand play side, a bellow provided between the right hand play side and the left hand play side. A plurality of columns of buttons provide on at least one of the right hand play side and the left hand play side. Each of the plurality of columns may have at least three buttons to which three single pitches are assigned, the three single pitches constituting a triad major chord. Embodiments of the present invention provide a user-friendly system for accordionists that can also cover more than 90% of the accordion songs being public in the world.