JP3191697U - A percussion mechanism suitable for flamenco music, Caribbean music, Afro-Peruvian music and folk music - Google Patents

Abstract

A fastening mechanism suitable for any musical genre or style, in particular flamenco music, Afro-Peruvian music, Caribbean music and any folk music, applicable to percussion instruments commonly known as cajons.
A cajon is formed in a box shape, has a layered side surface, at least one surface communicating with an internal space and an external space of a musical instrument, and a framework for fastening a performance surface 2 to a main body 1 of the musical instrument. Have The framework includes four supports 10 each installed on the inner side edge of the cajon, each support 10 comprising a single fixed block, each block having a performance surface on the instrument body 1. A detachable metal screw element 11 (compass) is attached, in which a passing bolt 7 for fastening 2 can be installed and each screw element 11 is also replaceable.
[Selection] Figure 1

Description

  The present invention relates to a percussion instrument mechanism, commonly known as cajon, suitable for all musical styles and genres, in particular flamenco music, Afro-Peruvian music, Caribbean music and folk music.

  Many South African and African traditional instruments are becoming increasingly popular in the mainstream music.

  One of them, Cajon (pronounced “Cajon”), is a box-shaped musical instrument, whose side is made of wooden boards, and for creating the optimal sound. In general, a round opening is provided on the opposite side of the playing surface.

  The cajon is played mainly while sitting on it, and its tone varies greatly depending on the specifications of each instrument, such as the size of the cajon, the width of the wooden board and other similar factors.

  A cajon for playing Caribbean music or Afro-Peruvian music is usually made only from a wooden box, and its tone can be specified only by the size of the instrument and the ratio of the components that make up the instrument.

  On the other hand, a flamenco cajon is a pair of strings that are placed in contact with a resonance board inside the instrument, such as a spiral knitted spring used in guitar strings and snare drums. In general, it is characterized by a mechanism for providing support and tension.

  In these cases, the timbre of the wood is enriched by the metal sound by the mechanism.

  In the prior art, the performance surface of the cajon is usually directly glued or screwed to the main body of the instrument, so there has never been a cajon that allows the performance surface to be changed an unlimited number of times.

  Since the screw to be screwed is directly attached to the wooden board, the wooden part to which the screw is attached is worn by repeated removal and attachment of the performance surface, and precise maintenance becomes impossible.

  There are various reasons for exchanging the playing surface, and the most common reason is the deterioration of the playing surface due to the long-handed batting action (original): The need to obtain another tone from the instrument, It can be a reason to replace the resonance plate with a different thickness or material than the one before the replacement, or even a motive based solely on aesthetic sensations, such as switching to a colored playing surface that looks good on the stage.

  In addition, maintenance such as replacement of damaged parts inside the snare or instrument may lead to the purpose of removing the playing surface.

This mechanism is suitable for all musical genres or styles, especially flamenco music, Afro-Peruvian music, Caribbean music and all folk music, is box-shaped and has layered sides, at least one side of the internal and external space of the instrument. The invention has been devised for application to a percussion instrument generally known as a cajon, characterized by having an opening for communication and a fastening mechanism for attaching a performance surface to the main body of the instrument.
The structure has at least one, each composed of four supports installed on the inner surface and its opposite edges, each support consisting of a single fixed block attached to the instrument body, Each block can be equipped with a passing bolt for fastening a playing soundboard to the main body of the instrument, and each screw element can also be replaced in case of deterioration. A mounted metal screw element (also known as a compass) is attached.

  Apply pressure to each support in the direction opposite to the direction in which the screws are tightened to provide stability to the bolts so that the bolts loosen due to vibrations applied to the instrument due to hand percussion or transport to other locations. To prevent this, a spring is also installed between the metal insert and the front plate.

  In the upper block on the inner surface, a percussionist usually wants to release the adjusted surface and the surface of the striking surface (original: the surface of the beating surface). A part of the protruding bolt is screwed in the direction opposite to the direction of the screw of the compass.

  This makes it possible to fix the distance of the striking surface from the instrument body in a step-wise manner even at the non-contact position (original: graduate and lock).

  In the prior art, the method of attaching the performance surface consists of glue, wooden screws, or both, so there has never been a cajon that allows the performance surface to be removed and replaced an unlimited number of times.

  Since the screws are conventionally attached directly to a wooden board, the removal and continuous rearrangement inevitably degrades the wooden thread, resulting in incomplete screw fixing.

  The technical purpose of the present invention is to provide the functionality described above with a simple mechanism in which each screw element is replaceable with common metals, and the mechanism according to the present invention is movable and It consists of four additional blocks that can be attached and detached, and the blocks are equipped with removable metal screw inserts for the purpose of fastening the playing surface to the instrument body, so it is highly reliable It becomes an actual operation that is simpler than before, with operation and efficient functions and cost control.

  The technical purpose of the present invention is to make the main body of the instrument maintain the functionality by allowing the resonance board to be exchanged an unlimited number of times and allowing each screw element to be exchanged for a common metal. By providing a mechanism for fastening the performance surface, the above-mentioned problems are addressed and the above-mentioned demands are met.

  The structure has at least one, and is composed of four supports that are installed to face the inner side edges of the cajon. Each support is composed of a single fixed block attached to the main body of the instrument. Thus, each block is fitted with an embedded metal screw element (also known as a compass) that allows a pass-through bolt to be attached to the main body of the musical instrument to fasten a performance resonance plate.

  Further details are shown in the drawings contained herein, but are not drawn for limited purposes, suitable for any musical genre or style, in particular flamenco music, Afro-Peruvian music, Caribbean music and any ethnic music, The percussion instrument commonly known as cajon is manifested in a detailed but non-exclusive model description.

A series of drawings is provided to provide a complete description and a further understanding of the invention. The drawings constitute an integral part of the description and show preferred embodiments of the invention. The drawing consists of the following figures.
FIG. 1 shows a perspective view and an exploded view of a percussion instrument according to the present invention. FIG. 2 is a perspective rear view of a percussion instrument according to the present invention. FIG. 3 shows a partial front view of the percussion instrument according to the present invention excluding the front plate. FIG. 4 shows a perspective view and an exploded view of a second embodiment of a percussion instrument according to the present invention. FIG. 5 shows a perspective rear view of a second embodiment of a percussion instrument according to the present invention.

(Description of a preferred embodiment of the present invention)
With particular reference to FIGS. 1 to 3, a percussion instrument 1 commonly known as cajon, suitable for any musical genre or style, in particular flamenco music, Afro-Peruvian music, Caribbean music and any folk music is demonstrated.

  The musical instrument 1 is composed of a box-shaped main body, is generally a parallelepiped, and is composed of plates (front plate 2, side plate 3, top plate 4, bottom plate 4a, and rear plate 5). The rear plate 5 has an opening 6 for the purpose of improving the sound of the musical instrument 1.

  The front plate 2 is fastened to the main body 1 of the musical instrument by a large number of bolts 7 that pass through the special holes 8 and stay inside the different holes 9, respectively.

  Inside the hole of the support 10 is a detachable metal element 11 with a female thread, said element called a compass being placed on the side opposite to the side that the bolt 7 accesses.

  It is important that the compass can be replaced using a common hexagon wrench key 13 in case the threads are worn.

  Inside the passage hole 9, the compression spring 12 is arranged so as to apply pressure to the internal compass and the wrapping bolt 7 functions as a pressure and load element, so that it can be transported to the hand percussion or elsewhere. It prevents the loosening action (original).

  When the bolt 7 is mounted inside the element 11, the front plate 2 is completely bonded to the body 1.

  The upper support 10 installed in the vicinity of the performer's performance area generally produces a specific tone upon percussion, as many percussion performers demand, so incomplete adhesion of the front plate 2 to the main body 1 may occur. May be required and leave a slight gap.

  To this end, FIG. 3 shows a series of counter nuts 14 to be placed inside a part of the bolt 7 protruding from the metal element 11.

  The mechanical action of the counter nut 14 with respect to the bolt 7 that penetrates the metal element 11 allows adjustment and fixing even if the bolt 7 is partially tightened. 1 is to leave a gap between.

  The second embodiment comprising a movable block 15 consists of a rectangular barrel-shaped movable block 15 having a passage hole and a detachable screw element 11, allowing faster and practical replacement of the insert. Features four additional movable parts.

  With particular reference to FIGS. 4 to 5, a percussion instrument 1, commonly known as cajon, is defined which is suitable for all musical genres, in particular flamenco music, Caribbean music and folk music.

  The musical instrument 1 has a box shape, is generally a parallelepiped, and includes a plate (a front plate 2, a side plate 3, a top plate 4, a bottom plate 4a, and a rear plate 5). The rear plate 5 has an opening 6 for the purpose of improving the sound of the musical instrument 1.

  The front plate 2 is fastened to the instrument 1 and the movable counter block 15 by a number of bolts 7 that pass through the specially provided holes 8 and in particular stay in different holes 9 arranged along the support 10.

  Inside the movable block 15 is a detachable threaded metal element 11 with internal threads, these elements, called a compass, being arranged on the opposite side of the bolt 7 from the access side.

  Between the fixed support 10 and the movable block 15 is disposed a spring 12 compressed so that the winding bolt 7 functions as an element for applying pressure and load between the support 10 and the movable block 15. This prevents loosening of the bolt 7 due to hand percussion by the performer or transport to another location.

  When the bolt 7 is attached to the screw element 11 on the receiving side, the performance resonance plate 2 is completely and stably fastened to the main body 1.

  This mechanism for fastening the front plate 2 to the musical instrument 1 is described above with respect to the differentiation of the musical instrument 1 between a Caribbean musical cajon without a snare mechanism, an Afro-Peruvian musical cajon, and a flamenco musical cajon with a snare mechanism. As such, it is noteworthy that it fits with or without an internal snare mechanism.

  The fixed support 10 and the movable block 15 are preferably made of wood, like the box-shaped main body 1 and the front plate 2, but this is not absolutely necessary.

  The sound hole 6 may be arranged on either side of the musical instrument 1 and may have a plurality of sound holes on each side or on different sides.

  All the details can be replaced by others that are technically equivalent.

Claims (9)

  For music percussion instrument 1 for replacing percussion surface 2 of music percussion instrument 1 made of a plurality of laminated side plates, which is manufactured in a box shape and has at least one hole 6 for communicating the interior space of the box with the outside The fastening mechanism is composed of four support bodies 10 disposed on each inner side plate of the musical instrument 1, and the support bodies are inclined and face each other and formed from a single block, The block is fixed and includes a through-hole 9 with a removable metal screw element 11, the metal part is provided with a female thread and is attached to one end of each through-hole 9, A fastening mechanism, wherein the striking surface 2 can be fixed to the main body of the musical instrument 1.   Each support body 11 is provided with a spring 12 which is accommodated in the passage hole 9 and compressed between the removable metal screw element 11 and the front plate 2. Since the tension is applied in the opposite direction to the passing bolt 7, it is mounted on the passing bolt 7, and is generated by the vibration received by the musical instrument 1 when the musical instrument 1 is played and transported from one place to another. The fastening mechanism according to claim 1, wherein accidental detachment of the bolt 7 is prevented.   A counter nut is provided inside the upper inner support which is one of the supports 10, and the counter nut can be attached / detached in a direction opposite to the thread of the removable metal screw element 11. It is attached to the part of the passing bolt 7 protruding from the metal screw element 11, which fixes each bolt 7 in a desired position, and the distance of the hitting surface 2 from the main body of the musical instrument 1 is stepwise. The fastening mechanism according to claim 1, wherein the fastening mechanism is changeable and can be fixed even at a separation position.   Each support 10 is formed of two blocks, a fixed block 10 having a passage hole 9 for fixing a bolt and a movable block 15 having a detachable metal screw element 11, and is detachable. The fastening mechanism according to claim 1, wherein a simple metal screw element is useful for housing the bolt and thus allows the striking surface to be fixed to the main body of the musical instrument.   The fastening mechanism according to claim 1, wherein the support body is made of wood.   The fastening mechanism according to claim 1, wherein the support body is made of plywood.   The fastening mechanism according to claim 1, wherein the support body is made of metal.   The fastening mechanism according to claim 1, wherein the support is made of a plastic material. The fastening mechanism according to claim 1, characterized in that the fastening mechanism can be attached to the inside of a box-type percussion instrument further comprising another mechanism for attaching an internal or external sound ray device intended to enrich the timbre. .

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