| CLAIMS 1. An endpin rest device (1) to prevent the slipping of musical instruments provided with a support endpin (4), and comprising: - An anti-slip base (2) provided with a receiving cavity (5) into which the endpin of the musical instrument can be inserted and; characterized by the fact that the endpin rest device (1) is configured in such a way as to realize a coupling between the endpin (4) and the anti-slip base (2) of magnetic type so that, when in use, the endpin results adjustable with respect to the anti-slip base (2) and wherein, further, the established magnetic attraction force F between the endpin and the anti- slip base is dimensioned in such a way as to be substantially equal to or result greater than the weight force P of the anti-slip base. 2. An endpin rest device (1), in accordance with claim 1, wherein the anti-slip base (2) is plane. 3. An endpin rest device (1), in accordance with claim 1 or 2, wherein the anti-slip base comprises a support base (2) and an anti-slip layer (6). 4. An endpin rest device (1), in accordance with claim 3, wherein the anti-slip layer is adhesive so as to result movable from the support base and replaceable. 5. An endpin rest device (1), in accordance with one or more of the preceding claims from 1 to 4, wherein the receiving cavity (5) comprises a concave part (7) directly obtained within the support base (2) . An endpin rest device (1) , in accordance with one or more of the preceding claims from 1 to 4, wherein the receiving cavity (5) comprises a concave part (7) overlapped to the support base (2) through a cylindrical wall (8), or trunk conical one (8), emerging from the support base (2). An endpin rest device (1), in accordance with any of the preceding claims from 1 to 6, wherein the receiving cavity of the anti-slip base is magnetic in such a way as to realize the said attraction force F with the metallic endpin of the instrument inserted into it. An endpin rest device (1), in accordance with claim 7, wherein the receiving cavity is provided with one or more magnets. An endpin rest device (1) , according to one or more claims from 1 to 6, wherein a protective cap (3) of the endpin is provided comprising a seat (12) into which the endpin of the instrument can be inserted and configured, on the opposite side of the seat, in such a way as to couple into the receiving cavity (5) of the anti-slip base (2) . An endpin rest device (1) , in accordance with claim 9, wherein the protective cap (3) is provided with one or more magnets (10) and wherein the receiving cavity (3) is metallic so that the said magnetic attraction force F is generated. 11. An endpin rest device (1), in accordance with claim 10, wherein only one magnet (10) is provided, arranged in correspondence of the head (9) of the cap (3) . 12. An endpin rest device (1), in accordance with claim 9, wherein the protective cap (3) is metallic and wherein the receiving cavity is provided with one or more magnets in such a way that the said magnetic attraction F is generated. 13. An endpin rest device (1), in accordance with one or more of the preceding claims from 9 to 12, wherein block means are provided to fix the endpin of the musical instrument within the seat (12) of the cap. 14. An endpin rest device (1), in accordance with claim 13, wherein the said block means comprises a dimensioning of the seat (12) configured for coupling to the endpin of the instrument with interference. 15. An endpin rest device (1), in accordance with claim 14, wherein the said interference is dimensioned in such a way as to impede the sliding of the cap from the endpin caused by the action of the weight of the endpin rest device (1) when the endpin rest device results lifted from the ground totally or at least partially. 16. An endpin rest device (1), in accordance with any of the preceding claims, wherein the anti-slip base is covered with an adhesive layer of the anti-scratch movable type on the opposite side of the face resting on the ground. 17. An endpin rest device (1), in accordance with claim 17, wherein the said interchangeable adhesive layer is provided with decorations. 18. An endpin rest device (1), in accordance with any of the preceding claims, wherein the anti-slip base is provided with a hole for the passage of a strap for blocking it to the leg of a chair. |
MAGNETIC TRACTION ENDPIN REST FOR CELLO
Technical Field
The present invention concerns the technical field relative to the production of accessories for musical instruments .
In particular, the invention refers to an innovative endpin rest device for musical instruments that allows the easy movement of the instrument when in use.
Background Art
It is well known that musical instruments, such as the cello, the harp or the double bass, are provided with an endpin so that they can rest upon the floor in a suitable position to be played. In order to avoid the slipping of the instrument when in use, there exist endpin rests configured to hold the endpin of the instrument and provided with a surface suitable for avoiding the slipping on the floor of the said instrument.
For example, some known endpin rests are provided with a support base (for example, rectangular or circular) supplied with an anti-slip layer arranged in correspondence of one of its sides destined to rest upon the floor. The opposite side is instead supplied with a concave seat, generally equipped with a metallic bushing within which the endpin of the instrument can be inserted.
In such a manner, the metallic endpin of the instrument is lodged directly in the seat so that the player can play the instrument freely and the instrument does not slip on the floor. In addition, the support base can further be tied to the chair by means of appropriate belts in order to guarantee greater stability, avoiding completely the risk of slipping of the instrument when in use .
Improved solutions foresee a tip as well, generally made of rubber, used to cover the end of the endpin and configured to be inserted in the said concave seat so that the player can have a certain freedom in varying, when in use, the angle of the instrument, avoiding at the same time the direct contact between the metallic point of the endpin and the seat and therefore, avoiding the wear of the parts.
However, the solutions indicated above result particularly uncomfortable and non-functional since, once the position in which to put the support base for the instrument on the floor is chosen, this position remains definite and cannot be moved anymore during all the musical execution. Although it is indeed relatively possible to vary the inclination of the instrument that rests upon the support base, it is not possible anyway to translate the support base due to the anti-slip layer that is present. It is known how such a limitation in the movements, if extended for an excessive period of time, is often the cause of the beginning of strong pain, especially on the musician's back.
For that purpose, endpins rests were proposed that are provided with a rectangular support base comprising a plurality of concave seats into which the endpin of the instrument can be inserted and arranged in a row at different distances one from the other. In such a manner, during the musical execution the musician has the possibility of changing the pre-chosen position by slightly lifting the instrument so as to cause the exit of the instrument's endpin from the seat, to insert it again in correspondence of a seat placed at another distance.
Such a solution is still not absolutely efficient and functional since it is really very difficult that during the musical execution the musician is able to insert the endpin into the pre-chosen hole exactly and easily, especially if the instrument is particularly heavy. The risk is therefore that the endpin falls out of the seat with the consequent slipping of the instrument-. Moreover, the attention required for such an operation can be the cause of distractions and therefore mistakes in the musical execution.
Brief description of the invention
It is therefore the aim of the present invention to provide an endpin rest device for musical instruments that solves at least in part the above-mentioned inconveniences .
In particular, it is the aim of the present invention to provide an endpin rest device for musical instruments that allows at the same time, on one hand, to easily adjust the angle of the instrument respect to the floor when in use and, on the other hand, to move the entire device when the instrument is in use, if it were necessary. The whole, naturally, without invalidating in any way the anti-slip features of the said device.
These and other aims are therefore reached by means of the present endpin rest device (1) to avoid the slipping of musical instruments supplied with a support endpin, in accordance with claim 1.
In accordance with the invention, an anti-slip base 2 is therefore provided, supplied with a receiving cavity 5 into which the endpin 4 of the instrument can be inserted .
When in use, inserting the endpin within the receiving cavity of the anti-slip base, the instrument results impeded to slip with respect to the floor as long as the endpin stays within the said receiving cavity.
For the purpose of not limiting in any way the possibility of angular adjustment of the instrument at choice by the player and, at the same time, not incurring risks of exit of the endpin from the receiving cavity, the endpin rest device is configured in such a way as to realize a coupling between the endpin of the instrument and the anti-slip base 2 of the magnetic type.
In such a manner, when in use, the endpin results adjustable according with one or more angles with respect to the base 2, while the said base results steady to the ground by means of its anti-slip features and due to its support area. Thus, the endpin is capable of rotating within the cavity, assuming any angle with respect to the anti-slip base, without any risk of going out of the cavity itself. In that case, inclination angles can therefore be obtained, also very elevated ones, with respect to the vertical of the ground, realizing at the same time conic angles of any amplitude. The user can therefore choose and modify at will the angle of the instrument .
Moreover, by opportunely dimensioning the attraction magnetic force F that is established between the endpin and the anti-slip base 2, it is possible to obtain that the force F results at least equal to or greater than the weight force P of the anti-slip base itself, regardless of the relative angle between endpin and anti-slip base.
In such a manner, the musician can lift the whole endpin rest device 1 being sure that the endpin will remain coupled to the anti-slip base, and therefore avoiding the detachment of the said parts one from the other. Thus, it is possible for the musician, when it is required, to move the whole device consequently modifying at choice the positioning distance of the musical instrument. Such an operation now results quick and simple since it does not require particular abilities or concentration .
Advantageously, the anti-slip base (2) can be realized plane .
In such a manner, a wide area of contact with the ground can be guaranteed. By opportunely varying the surface (in particular, by increasing it) , the stability of the whole device and the anti-slip features can be controlled.
Advantageously, the anti-slip base can comprise a support base (2) supplied with an anti-slip layer (6).
Advantageously, the anti-slip layer can be adhesive so as to result movable from the support base and therefore replaceable .
Advantageously, the receiving cavity (5) can comprise a concave part (7), directly obtained within the support base (2) .
Otherwise, the receiving cavity (5) can advantageously comprise a concave part (7) overlapped to the support base (2) through a cylindrical wall (8), or trunk-conical (8) wall, emerging from the support base (2) .
In accordance with a possible embodiment, therefore, the receiving cavity of the anti-slip base can advantageously be realized in magnetic material so as to realize the said attraction force F with the metallic endpin of the instrument.
In particular, the receiving cavity can, for that purpose, be supplied with one or more magnets.
In order to avoid the direct contact between the endpin of the musical instrument and the receiving cavity of the anti-slip base, a protective cap (3) for the endpin can be advantageously provided, comprising a seat (12) within which the endpin of the instrument can be inserted. The cap results therefore configured from the side opposite to the seat, in such a way as to couple within the receiving cavity (5) of the anti-slip base (2) .
Advantageously, in accordance with such a configuration of the invention, the protective cap (3) can then be provided with one or more magnets (10) to establish the magnetic force F . In that case, the receiving cavity (3) is metallic so that the said magnetic attraction force F between cap and base is generated.
Advantageously, only one magnet (10) can be provided, arranged in correspondence of the head (9) of the cap (3) .
Otherwise, the protective cap (3) can be metallic and, consequently, the receiving cavity can be provided with one or more magnets in such a way that the said magnetic attraction force F is generated.
In accordance with the solution with the cap, block means to fix the endpin of the musical instrument in the seat (12) of the cap itself can then be provided.
Advantageously, the said block means can foresee such a dimensioning of the seat (12) as to couple with the endpin of the musical instrument with interference.
In particular, the interference can be dimensioned in such a way as to impede the sliding of the cap from the endpin caused by the action of the weight of the endpin rest device (1) when the endpin rest device results lifted from the ground totally or at least partially.
Advantageously, the anti-slip base (2) can be further provided with a passing hole to allow the passage of a strap to further secure the endpin rest device to the legs of a chair.
Advantageously, the anti-slip base can also be covered with a replaceable anti-scratch adhesive layer on the side opposite to the face resting on the ground.
Such an adhesive layer is therefore replaceable and can have decorations of various forms.
Brief description of the drawings
Further characteristics and the advantages of the present endpin rest device, according to the invention, will result clearer with the description of some of its embodiments that follows, made to illustrate but not limit, with reference to the annexed drawings, wherein:
- Figure 1 represents an axonometric view of the endpin rest device in accordance with the invention;
- Figure 2 represents a top view of the anti-slip base alone;
- Figure 3 shows a section of the anti-slip base;
- Figure 4 shows an axonometric view of the protective cap 3 ;
- Figure 5 shows a section of the said protective cap;
- Figure 6 and figure 7 show an example of use following the coupling between the anti-slip base and the protective cap;
— Figure 8 highlights the magnetic force acting between the anti-slip base and the protective cap, together with the weight force of the anti-slip base alone.
- Figure 9 shows an alternative solution in which the endpin is directly inserted into the receiving cavity without being provided with protective cap.
Description of some preferred embodiments
With reference to figure 1, an axonometric view of a first possible embodiment of the endpin rest device 1 is described.
The endpin rest device 1 comprises an anti-slip base
2 provided with a receiving cavity 5 and a protective cap
3 into which the endpin 4 of a generic musical instrument can be inserted. The receiving cavity 5 is configured in such a way as to be able to couple magnetically to the endpin through the protective cap, as better described in detail below in the present description.
Going further into the descriptive details, figure 2 shows a top view relative to the anti-slip base 2. The anti-slip base is plane and can be realized in various forms, for example the rectangular one of figure 2, or circular or quadrangular. This comprises a support base 2, on which the receiving cavity 5 results arranged, and an underlying anti-slip layer. Figure 3 shows, for greater clarity purposes, a section A-A always relative to the anti-slip base 2. The section shows an anti-slip layer 6 arranged below the support base 2 on the face destined to rest on the ground and so on the side opposite to the concave seat 5.
It is possible, for example, to realize an adhesive layer 6 in such a way as to be able to apply it in a replaceable manner. Thus, when the anti-slip layer 6 results worn, or malfunctioning due to the excessive deposit of dust, it is possible to perform its replacement easily.
Otherwise, an anti-slip layer can be provided, directly integrated to the support base 2 and not replaceable (for example, a rubber layer integrated to the base itself) .
In any case, the anti-slip layer can be realized of different materials suitable for the aim, such as rubber or PVC. In an absolutely equivalent manner, it can also have any form, covering completely or just in part the face on which it results applied.
Always the section of figure 3 shows the sectioned receiving cavity 5. This comprises a concave part 7 destined to couple to the protective cap 3, as in more detail below in the present description. The detail solution shown in figure 3 highlights the cavity 5 overlapped to the support base 2 through a cylindrical or trunk-conical part 8, emerging from the support base 2.
An equivalent solution can instead comprise a cavity 5, always in a concave form 7, but obtained directly within the support base 2. The cavity 5 is anyway configured in such a way as to hold the protective cap 3 to be applied to the end of the endpin of the instrument.
Figure 4 shows a detailed axonometric view of the cap 3 in accordance with the preferred configuration of the invention. The cap comprises a head 9 of semi- spherical form provided with one or more magnets 10 in such a way as to realize a coupling between the anti-slip base 2 and the protective cap 3 of magnetic type and therefore freely adjustable. In the specific case of figure 4 only a magnet 10 is highlighted, arranged in a position central and symmetrical with respect to the head 9. On the opposite side to the head 9 the remaining part of the body 11 of the cap develops. The section of figure 5 shows the cap 3 sectioned with the aim of highlighting a seat 12 into which the endpin of the instrument can be inserted.
In accordance with the preferred solution of coupling between endpin 4 of the instrument and cap 3, the configuration of the seat 12 can be diversified at choice (for example, cylindrical or conical) but, in any case, it should hold the endpin with a certain degree of interference. The interference must be such as to guarantee that the cap 3 does not slip from the endpin of the instrument under the action of the weight of the endpin rest device itself when, through the lifting of the instrument from the ground, also the device results entirely or partially lifted from the ground. The diameter of the seat 12 is therefore dimensioned on the basis of the endpin to be inserted so as to realize such a degree of interference as to hold at least the weight of the entire endpin rest device.
Other solutions can anyway be provided in order to guarantee a safe- coupling between endpin and cap 3. For example, fixing means can be foreseen comprising magnets opportunely dimensioned in order to hold the weight of the device 1 and placed within the seat 12. Otherwise, one or more adjustable screws can be arranged in such a way as to be inserted into the seat 12, the said screws being adjustable from the exterior, in such a way as to realize a direct seal contrast against the endpin inserted into the seat 12.
As shown in the section of figure 6 and in greater detail in the axonometric view of figure 7, the magnet 10 arranged on the head of the cap 3 therefore realizes a magnetic coupling between the protective cap 3 itself and the anti-slip base 2 by which the protective cap of the endpin results adjustable with respect to the anti-slip base 2. In particular, the conformation of the head 9 of the cap is such as to substantially match the cavity 5 in such a way as to realize a sort of spherical joint coupling 13. In accordance with such a preferred solution, therefore, the cavity 5 must be realized in metal at least in its concave part 7 in such a way that the magnet 10 applied to the head 9 of the cap can realize the magnetic attraction force F between the protective cap 3 and the anti-slip base 2.
Naturally, even if a solution is shown by which the magnet is arranged on the cap 3, an equivalent solution can be easily provided in which the magnet is instead arranged in correspondence of the receiving cavity 5 or even on the anti-slip base substantially in correspondence of the cavity. In accordance with this further solution, it is then necessary to arrange a metallic element in the head 9 of the cap or, similarly, cover the head itself with metal so as to establish such a magnetic force between the two parts.
In all cases, the magnetic coupling allows to move freely the cap with respect to the anti-slip base or vice versa and with the head 9 always arranged within the cavity. In particular, such a coupling allows to rotate freely the cap within the receiving cavity 5 with respect to the support base 2, which remains steady in position on the ground. For that purpose, figure 7 shows an example in which such a magnetic spherical joint coupling 13 allows to rotate freely the cap 3 with respect to the anti-slip base 2 in such a way as to trace generators of a cone of generic amplitude.
In accordance with the invention, therefore, the magnetic force F which is the cause of the attraction between the anti-slip base 2 and the cap 3 is dimensioned in such a way as to result at least equal to or greater than the weight force P of the anti-slip base 2, whichever the relative angle between the said base 2 and the cap 3. The technical effect of such a dimensioning is that by which, by lifting the entire endpin rest device 1 from the ground, for example during a change in the position of the instrument when in use, no detachment of the anti-slip base takes place with respect to the cap by means of the weight P of the base itself.
Figure 8 shows indeed an example in which the lifting of the entire anti-slip device with respect to the ground takes place without the said detachment between the parts of the weight P of the anti-slip base 2 taking place. In particular, in accordance with a generic angle between the base 2 and the cap 3, always figure 8 highlights the weight P that acts on the anti-slip base 2 directed towards the ground and the attraction magnetic force F between the base and the cap which results opposed to the weight P .
Figure 8 therefore highlights how such a force F must be dimensioned so that the vertical component Fv of the force F balances the weight P . In this manner, when in use, the musician can easily lift the instrument dragging the entire device 1 behind him and changing his own position of execution easily.
The subsequent . figure 9 shows a second possible embodiment of the invention which is particularly simple and economical to realize. Such a configuration is identical to the preceding one except for the fact that it lacks the protective cap.
In this case, the coupling takes place directly by inserting the end 4' of the endpin 4 in the receiving cavity 5. Thus, it is enough that the endpin 4 is made of metallic material, for example, while the cavity should be furnished with magnets or realized with magnetic material or vice versa. Otherwise, as described above, equivalent solutions that allow anyway to establish an attraction magnetic force between the endpin and the receiving cavity as described above can equally be realized.
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