JPH0292755U

JPH0292755U -

Info

Publication number: JPH0292755U
Application number: JP17154288U
Authority: JP
Priority date: 1988-12-30
Filing date: 1988-12-30
Publication date: 1990-07-24
Anticipated expiration: 2003-12-30
Also published as: JP2531278Y2

Description

[Brief explanation of drawings]

第１図は、この考案の１実施例に係る座面クツ
シヨンの芯材の全体斜視図、第２図は、その一部
を拡大して破断状態で表わした斜視図、第３図は
、別の構成例に係る芯材の斜視図、第４図は、第
３図のＡ部分を拡大して表わした部分縦断面図、
第５図は、第３図に示した芯材の変形例を示す部
分拡大縦断面図、第６図は、さらに別の構成例に
係る芯材を裏面側から見た斜視図、第７図及び第
８図はそれぞれ、さらに別の構成例に係る芯材の
平面図、第９図は、第８図の―部分縦断面図
である。１０，２０，２０’，４０，５０，６０……芯
材、１２，２２，４２，５２，６２……上層部材
、１４，２４，４４，５４，６４……下層部材、
１６，２６，６６……貫通小孔、２８，４８，５
８，６８……切除部、７０……ゴム状物質からな
る円形小板。 Fig. 1 is an overall perspective view of the core material of a seat cushion according to an embodiment of this invention, Fig. 2 is an enlarged perspective view of a part thereof in a broken state, and Fig. 3 is a separate perspective view. A perspective view of a core material according to a configuration example, FIG. 4 is a partial vertical sectional view showing an enlarged portion A of FIG.
FIG. 5 is a partially enlarged vertical sectional view showing a modified example of the core material shown in FIG. 3, FIG. 6 is a perspective view of the core material according to yet another configuration example, viewed from the back side, and FIG. and FIG. 8 are respectively plan views of a core material according to still another configuration example, and FIG. 9 is a partial vertical cross-sectional view of FIG. 8. 10, 20, 20', 40, 50, 60... core material, 12, 22, 42, 52, 62... upper layer member, 14, 24, 44, 54, 64... lower layer member,
16, 26, 66... through small hole, 28, 48, 5
8, 68...excised portion, 70...circular platelet made of rubber-like material.

Claims

[Claims for Utility Model Registration] 1. In a seat cushion in which a core material is housed in a bag-like outer covering, a polyurethane fine cell foam having a high density, fine and uniform cell structure is used to form a uniform 3 to 8 mm cell structure. a hard upper layer member formed to a thickness of about 100%, and a soft lower layer member formed of a polyurethane low-resilience foam with low rebound resilience to a uniform thickness of about 3 to 10 times the thickness of the upper layer member. 2. A seat cushion, characterized in that the core material is formed into a flat plate shape by overlapping and bonding each other, and a large number of small through holes are formed on the entire surface of the upper layer member. 2. The seat cushion according to claim 1, wherein a cutout portion having a shape and size corresponding to the position of the private parts and anus of the human body when the user is seated is formed in the center of the upper layer member. 3. The seat cushion according to claim 1, wherein the lower member has a cutout portion formed in the center thereof with a shape and size corresponding to the position of the private parts and anus of the human body when the user is seated. 4. The seat cushion according to claim 2 or 3, wherein the member is not removed at least in the portion where the left and right ischial tuberosities of the human body are located when the human body is seated. 5. A rubber-like material with high energy absorption is used instead of polyurethane micro-cell foam in the area where the right and left ischial tuberosities of the human body are located when sitting, and the rubber-like material is used as the polyurethane micro-cell foam forming part. 4. The seat cushion according to claim 1, wherein the seat cushion is bonded to the lower layer member so as to be flush with the seat cushion.