CZ290549B6 - Case for musical instruments - Google Patents

Abstract

The invented case for musical instruments made of thin-walled laminate consists of a location part and a cover (2) with vertical peripheral walls passing away into said location part bottom (3) plane and into said cover (2) vault (4). Structure of the cover (2) vault (4) is formed of raised ridge (7) situated in longitudinal axis of the cover (2) wider section and sloping toward narrower front side (6) of the cover (2), the utmost high point (8), located in one fifth of the cover (2) length from the cover (2) wider front side (5), follows up with a first concave surface (9.1), sloping toward the cover (2) front side (5). The opposite end of the ridge (7) is followed up with a second concave surface (9.2), sloping toward a narrower front side (6) of the cover (2). Surfaces (10) extending on sides of the ridge (7) are convex.

Description

Musical instrument case

Technical field

The invention relates to a case for musical instruments, in particular stringed instruments.

BACKGROUND OF THE INVENTION

Cases for musical instruments have so far been commonly made of traditional materials, in particular cardboard, provided on the inside and possibly on the outside of paper, textile or even plastic film covers.

In addition, sleeves are made more recently from thick-walled laminates, for example according to GB 2,180,220 and GB 2,184,425, the walls of which have a thickness of three to four millimeters. These bushings have straight lids and are very heavy due to the thick-walled material used. At the same time, they do not have the sufficient strength needed to adequately protect often expensive musical instruments.

SUMMARY OF THE INVENTION

The above-mentioned drawbacks are overcome by the high-load-bearing musical instrument housing of the present invention formed from a thin-walled laminate with a middle layer of rigid foam material consisting of a storage part and hinged lids of the same contour with vertical walls following the outline of the musical instrument. and passing into the plane of the bottom of the receptacle and into the lid arch. The lid arch structure is formed from a raised spine located along the longitudinal axis of the wider portion of the lid and sloping towards the narrower front side of the lid. At the highest point of the spine, located at one fifth of the length of the lid from the wider front side of the lid, is followed by a first concave surface sloping towards the wider front side of the lid. A second concave surface adjoins the opposite end of the spine sloping towards the narrower front side of the lid. Convex surfaces are placed on the sides of the back.

The housing may be provided with a strap in addition to the conventional handle, the ends of which are fixed symmetrically on opposite sides of the peripheral wall of the housing. Its loop is spaced from the narrower face of the housing.

The housing surface may be provided with an opaque light lacquer. Musical instrument cases according to the invention are distinguished by their high strength and pressure resistance, increased by the support elements made of solid, due to the use of a lid arch consisting of a back, concave and convex surfaces analogous to Gothic cross and rib vaults. material for holding the musical instrument and located within the housing.

The thin-walled laminate shells weigh from 1.20 to 1.80 kg, which is about a quarter to half the normal weight of the shells. They can withstand static loads of up to 4000 N without damage. They are capable of absorbing an impact energy of 1 kJ, eg the impact of a 100 kg body from a height of one meter.

The strap fastened with its ends on opposite sides of the circumferential wall of the sleeve allows for comfortable carrying of the sleeve in a vertical position.

The housing surface may be provided with an opaque light lacquer to mitigate the effects of ambient temperature differences on the musical instrument housed in the housing.

-1 CZ 290549 B6

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The invention is illustrated in more detail with reference to the drawings, wherein FIG. 1 shows a perspective view of a closed violin sheath, FIG. 2 shows a longitudinal section of the violin sheath 5, FIG. 3 shows a schematic view of the open violin sheath; 4 is a schematic cross-sectional view of a case for a larger stringed instrument, such as a guitar.

DETAILED DESCRIPTION OF THE INVENTION

Example 1

The violin case according to FIGS. 1, 2 and 3 is formed from a flat bottom housing 3 and a lid 2. The peripheral walls 1 of the housing and lid 2 are permanently connected on one side of the housing by hinges 11 and are secured by a lock on the opposite side. The housing is provided with a fixed handle 13 and a strap 12, the ends of which are fixed symmetrically on opposite sides of the housing. The vault 4 of the lid 2 is formed from a raised spine 7, 20 positioned in the longitudinal axis of the wider part of the lid 2. Its highest point 8 is followed by a first concave surface 9.1 sloping towards the wider front side 5 of the lid 2. a surface 9.2 sloping towards the narrower front side 6 of the lid 2. Convex surfaces 10 are disposed on the sides of the spine 7. The arch 4 of the lid 2 in a way analogous to the gothic thin-walled cross and rib arches is characterized by high strength and pressure resistance. The interior 25 of the housing part and the lid 2 are provided with support elements 17 of solid material intended to hold musical instruments and aids. The peripheral wall of the lid 2 is provided with a circular seal and the peripheral wall 1 of the housing is provided with a U-shaped cross-section.

Example 2

The inner surface of the base 3 of the guitar case housing portion is concave according to FIG.

Industrial applicability

These sturdy, lightweight and comfortable carrying cases are designed not only for stringed musical instruments, but can also be used for other types of musical instruments or for various sensitive instruments.

Claims (3)

1. A heavy-duty musical instrument case made of a thin-walled laminate with a middle layer of rigid foam material, consisting of a receptacle and flexible hinges of a connected contoured lid having the same contour and having vertical walls 50 extending round the bottom of the floor. and in the lid arch, characterized in that the structure of the lid arch (4) is formed from a raised spine (7) located along the longitudinal axis of the wider portion of the lid (2) and sloping towards the narrower front side (6) of the lid (2), the highest point (8) of which is located at one fifth of the length of the lid (2) and that the other end of the spine (7) adjoins a second concave surface (9.2) the front side (6) of the lid (2), and that the surfaces (10) located on the 55 sides of the back (7) are convex. -2GB 290549 B6 Musical instrument case according to claim 1, characterized in that it is provided with a handle (13) and a strap (12), the ends of which are fixed symmetrically on opposite sides of the peripheral wall (1) of the case and whose loop is spaced from the narrower end wall (6) lids (2). Musical instrument case according to claim 1, characterized in that its surface is provided with a light opaque lacquer.