| JPS5510994 | SHEET STRUCTURE |
| JP6851584 | Bed frame and bed |
| JP3161605 | Sofa seat spring structure |
| US1329145A | 1920-01-27 | |||
| US4523342A | 1985-06-18 | |||
| GB1567157A | 1980-05-14 | |||
| CH451431A | 1968-05-15 |
| 1. | A cushion device, the device comprising: an outer supporting member, having a predetermined area, which is formed to include a shock absorbing space; and a cushion plate in which includes bars that are located at a predetermined interval inside from said outer supporting member and connected to said outer supporting member by a plurality of elastic springs, and numbers of steel wires that are elastically installed at regular intervals between said two bars. |
| 2. | The device according to claim 1, further comprising one plate spring or more, of which the both ends are connected to said outer supporting member by elastic springs, and which are arranged transversely to a plurality of said steel wires so as to support them. |
| 3. | The device according to claim 2, wherein a plurality of said steel wires are tied by strings made of nonmetal materials on said plate springs. |
| 4. | The device according to one of claims 1 to 3, wherein said outer supporting member comprises a first outer frame with a predetermined area; a plurality of supporting frames, which are extended downwards from said first outer frame so as to form said shock absorbing space; and a second outer frame, which are fixed to said supporting frames and are in a parallel arrangement with said first outer frame. |
| 5. | The device according to claim 4, wherein said outer supporting member further comprises a plurality of first reinforcing frames, being in a parallel arrangement to said steel wires at regular intervals, which are fixed between said outer frames forming said shock absorbing space. |
| 6. | The device according to claim 5, wherein furthe comprising second reinforcing frames, which are in a parallel arrangement to said plate springs between said second outer frame and said first reinforcing frames adjacent to said second outer frame, in order to prevent the flexibility of said outer frames due to the tensility of said springs. |
| 7. | The device according to claim 1, wherein after curving around said bar, the both ends of a plurality of said steel wires on said cushion plate are bended and fastened to the inside of bending portions. |
| 8. | The device according to claim 7, wherein said cushion plate further comprises a fixed member to be placed between said steel wires for preventing the movement of said steel wires. |
TECHNICAL FIELD
The present invention relates to a cushion device utilized for a bed, sofa, chair, or seats for the use of the vehicle, etc., and more particularly relates to a cushion device in which a person feels the best comfort by manufacture process on the basis of the human body engineering, and its life is semi -permanent.
BACKGROUND ART
There has been used sponges in a conventional device. Over time the sponges have a drawback that the elasticity of the sponges is to be reduced and finally lost because they are under weight beyond their elastic limit. Recently, a cushion device, which has a predetermined area as a network structure connected by steel springs, has been developed. The conventional cushion device made of the steel springs is shown in FIG. 1, which illustrates a part of cushion device for a bed. In the conventional device, a plurality of steel springs are connected with one another between an upper frame 1 and an bottom frame 2 in a network type.
However, the conventional device has drawbacks which include a complex manufacture process as well as making noises during cushion movement and do not provide the best comfort, in view of the human body engineering, due to the degree of a differently load against the springs according to each of bending portions of the human body.
DISCLOSURE OF THE INVENTION
Therefore, to solve the above problems in the conventional
device, it is an object of the present invention to provide a cushion device on which a person feels the best comfort by manufacture process on the basis of the human body engineering.
It is the other object of the present invention to provide a cushion device with almost no noises during cushion movement.
It is another object of the present invention to provide a cushion device that is easy to manufacture and is semi-permanent in life.
To accomplish the above objects of the present invention, there is provided a cushion device, the device comprising: an outer supporting member which has a predetermined area and is formed to include a shock absorbing space; and a cushion plate in which includes bars that are located at a predetermined interval inside from the outer supporting member and connected to the outer supporting member by a plurality of elastic springs, and numbers of steel wires that are elastically installed at regular intervals between the two bars.
BRIEF DESCRIPTION OF DRAWINGS
FIG.l is a perspective view showing an example of a conventional cushion device.
FIG. 2 is a perspective view of a preferred embodiment of a cushion device according to the present invention.
FIG. 3 is an enlarged perspective view of A portion in the device of FIG. 2. FIG. 4 is a partially cut-away perspective view of a bed with a cushion device according to the present invention.
FIG. 5 is a partially cut-away perspective view of a sofa with a cushion device according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
The preferred embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 2 is a perspective view of a preferred embodiment of a cushion device for the bed according to the present invention. The cushion device of the present invention comprises an outer supporting member 20 which has a predetermined area and is formed to include a shock absoring space 10. The outer supporting member 20 preferably remains in a hollow pipe shape made of steels. The outer supporting member 20 includes a first outer frame 21 with a predetermined area, a plurality of supporting frames 22 which are extended downwards from the first outer frame 21 so as to form the shock absorbing space 10, and a second outer frame 23 which are fixed to the supporting frames 22 and are in a parallel arrangement with the first outer frame 21. A cushion plate 30 is elastically fastened to the first outer frame 21 of the outer supporting member 20 by a plurality of first elastic springs 40.
The cushion plate 30 includes includes a pair of bars 31, 31 ' which are fastened to the outer supporting member 20 by a plurality of the first elastic springs 40, and numbers of steel wires 32 that are elastically installed at regular intervals between the two bars 31, 31'. As shown in FIG. 2, in the case of a wide cushion plate, the cushion plate 30 preferably further includes one plate spring 33 or more, which are connected to the outer supporting member 20 by second elastic springs 50. The plate spring 33 are placed transversely to a plurality of the steel wires 32 and arranged to support them. On the plate springs 33 strings 34 for tying a plurality of the steel wires 32 are made of nonmetal materials, and preferably cotton yarns. Here, it is preferred to enhance tensile strength of the second elastic springs 50 rather than that of the first elastic springs 40.
The cushion device of the present invention further incudes a plurality of first reinforcing frames 24, being in a parallel arrangement to the steel wires 32 at regular intervals, which are fixed between the outer frames 21, 23 forming the shock absorbing space 10. Between the first reinforcing frames 24 adjacent to the second outer frame 23 and the second outer frame 23, a second reinforcing frames 25 are preferably installed in a parallel arrangement to the plate springs 33 in order to prevent the flexibility of the outer frames 21, 23 due to the tensility of the springs. FIG. 3 is an enlarged perspective view of A portion in the device of FIG. 2. As shown in FIG. 3, after curving around the bar 31 ', the ends of the steel wires 32 are bended and fastened to the inside of bending portions. Accordingly, the fastened steel wires are securely maintained in a tied form under the load of the human body. In addition, fixed members 35 are placed between each of the steel wires 32, so as to prevent the movement of each of the steel wires 32.
FIG. 4 shows a bed with an internal cushion device of FIG. 2. Referring to FIG. 4, the cushion device of the present invention is installed on bed legs 60 and includes in order a mat 70 and a sheet cover 80 thereon.
FIG. 5 is a partially cut-away perspective view of a sofa with an internal cushion device according to the present invention. As shown in FIG. 5, the cushion device of the present invention is installed on sofa legs 90 and includes a sheet cover 100 thereon.
INDUSTRIAL APPLICABILITY
As described above, a cushion device in accordance with the present invention allows a person to feel the best comfort because it gives a nearly equal elasticity to each of bending portions of the human body when the person lies or sits thereon. Besides, the
device provides advanced advantages which is no noises, easy to manufacture, and semi -permanent in life.