JP5057281B2

JP5057281B2 - cushion

Info

Publication number: JP5057281B2
Application number: JP2007036268A
Authority: JP
Inventors: 飯田　　潔; 康次菅原; 吉弘清野
Original assignee: Yokohama Rubber Co Ltd
Current assignee: Yokohama Rubber Co Ltd
Priority date: 2007-02-16
Filing date: 2007-02-16
Publication date: 2012-10-24
Anticipated expiration: 2027-02-16
Also published as: JP2008200084A

Description

本発明は、例えば車椅子の着座面や病院のベッドに載置され、着座者や患者に発生する褥瘡を防止するために用いられるクッションに関するものである。 The present invention relates to a cushion that is placed on, for example, a seating surface of a wheelchair or a bed in a hospital and used to prevent pressure ulcers that occur in a seated person or a patient.

一般に、この種のクッションとしては、それぞれ上方に向かって延びる袋状に形成され、互いに水平方向に並ぶように配置された複数のエアーセルと、各エアーセルの下端側を支持するベース部と、ベース部に設けられ、各エアーセル内を互いに連通させる空気通路とを備え、各エアーセルによって患者を支持するようにしたものが知られている（例えば、特許文献１参照。）。
特開２００６−２０４５６１号公報 In general, as this type of cushion, a plurality of air cells, which are each formed in a bag shape extending upward and arranged in a horizontal direction, a base portion that supports the lower end side of each air cell, and a base portion And an air passage that communicates with each other in each air cell, and supports a patient by each air cell is known (for example, see Patent Document 1).
JP 2006-204561 A

ところで、前記クッションでは、各エアーセルが患者の体型や体重に応じて上下方向に潰れるとともに、各エアーセル内の空気圧が空気通路を介して略等しくなり、各エアーセルと患者との接触圧を均一に分散させるようになっている。また、前記クッションは、複数のエアーセルが互いに水平方向に並ぶように金型によって一体に成形された上側シート状部材と、上側シート状部材に貼り合わせられて各エアーセルの下端側開口部を閉鎖する下側シート状部材とから構成されている。 By the way, in the cushion, each air cell collapses in the vertical direction according to the patient's body shape and weight, and the air pressure in each air cell becomes substantially equal through the air passage, so that the contact pressure between each air cell and the patient is evenly distributed. It is supposed to let you. The cushion is bonded to the upper sheet-like member integrally formed by a mold so that the plurality of air cells are aligned in the horizontal direction, and the lower end opening of each air cell is closed. It is comprised from the lower sheet-like member.

一方、患者によって体型や体重が異なるので、患者の体型や体重に応じて各エアーセルの高さ寸法や形状等を変更することにより、各エアーセルと患者との接触圧をより均一に分散させることが可能になるが、前述のように各エアーセルは金型によって一体に成形されているので、患者の体型や体重に応じて各エアーセルの高さ寸法や形状を変更することができないという問題点があった。 On the other hand, since the body shape and weight differ depending on the patient, the contact pressure between each air cell and the patient can be more evenly distributed by changing the height dimension and shape of each air cell according to the body shape and weight of the patient. However, as described above, since each air cell is integrally formed by a mold, there is a problem that the height dimension and shape of each air cell cannot be changed according to the patient's body shape and weight. It was.

本発明は前記問題点に鑑みてなされたものであり、その目的とするところは、支持対象物に応じて各エアーセルの高さ寸法や形状を容易に変更することのできるクッションを提供することにある。 This invention is made | formed in view of the said problem, The place made into the objective is to provide the cushion which can change the height dimension and shape of each air cell easily according to a support target object. is there.

本発明は前記目的を達成するために、上方に向かって延びる袋状に形成されるとともに下端に可撓性の開口縁部を有する複数のエアーセルと、各エアーセルが互いに略水平方向に並ぶように着脱自在に取付けられるベース部材とを備え、前記ベース部材に各エアーセルにそれぞれ対応する複数の取付穴を設けるとともに、各取付穴を上方に向かって開口するように形成し、エアーセルの開口縁部の外周面が取付穴の内周面に嵌合するとともに全周に亘って下方から係止することにより、各エアーセルがベース部材に取付けられるように構成している。 In order to achieve the above object, the present invention has a plurality of air cells formed in a bag shape extending upward and having a flexible opening edge at the lower end, and the air cells are arranged in a substantially horizontal direction. A base member detachably attached to the base member, and the base member is provided with a plurality of attachment holes corresponding to the air cells, and the attachment holes are formed to open upward. Each air cell is configured to be attached to the base member by fitting the outer peripheral surface to the inner peripheral surface of the mounting hole and engaging the entire periphery from below.

これにより、各エアーセルはベース部材に着脱自在に取付けられることから、各エアーセルをそれぞれ高さ寸法や形状の異なる他のエアーセルに任意に交換することができる。また、ベース部材には各エアーセルにそれぞれ対応する複数の取付穴が設けられるとともに、各取付穴は上方に向かって開口するように形成され、可撓性の開口縁部の外周面が取付穴の内周面に嵌合するとともに全周に亘って下方から係止することにより、各エアーセルがベース部材に取付けられることから、各エアーセルによって支持対象物を支持する際に、各エアーセル内の空気圧が高くなると、開口縁部の外周面が取付穴の内周面に押付けられる。即ち、エアーセルをベース部材に取付けるための取付部材を別途用いなくても、開口縁部の外周面と取付穴の内周面との間から空気漏れが生じない。また、開口縁部の外周面が取付穴の内周面に下方から係止することにより、各エアーセルがベース部材に取付けられることから、エアーセルをベース部材に取付けるための取付部材を別途用いなくても、開口縁部が取付穴から容易に外れることがない。 Thereby, since each air cell is detachably attached to the base member, each air cell can be arbitrarily replaced with another air cell having a different height dimension and shape. The base member is provided with a plurality of mounting holes corresponding to the respective air cells, each mounting hole is formed to open upward, and the outer peripheral surface of the flexible opening edge is the mounting hole. Since each air cell is attached to the base member by being fitted to the inner peripheral surface and locked from below over the entire circumference, the air pressure in each air cell is changed when the support object is supported by each air cell. When it becomes higher, the outer peripheral surface of the opening edge is pressed against the inner peripheral surface of the mounting hole. That is, air leakage does not occur between the outer peripheral surface of the opening edge and the inner peripheral surface of the mounting hole without using a separate mounting member for mounting the air cell to the base member. In addition, since each air cell is attached to the base member by locking the outer peripheral surface of the opening edge to the inner peripheral surface of the mounting hole from below, a mounting member for attaching the air cell to the base member must be used separately. However, the opening edge portion is not easily detached from the mounting hole.

本発明によれば、各エアーセルをそれぞれ高さ寸法や形状の異なる他のエアーセルに任意に交換することができ、また、エアーセルをベース部材に取付けるための取付部材を別途用いなくても、開口縁部の外周面と取付穴の内周面との間から空気漏れが生ずることがなく、開口縁部が取付穴から容易に外れることもないので、支持対象物に応じて各エアーセルの高さ寸法や形状を容易に変更することができ、各エアーセルと支持対象物との接触圧を均一に分散させる上で極めて有利である。また、取付部材を別途用いる必要がないので、安価に製作できる。 According to the present invention, each air cell can be arbitrarily replaced with another air cell having a different height and shape, and the opening edge can be used without using a separate attachment member for attaching the air cell to the base member. Air leakage does not occur between the outer peripheral surface of the part and the inner peripheral surface of the mounting hole, and the opening edge part does not easily come off from the mounting hole, so the height dimension of each air cell according to the support object And the shape can be easily changed, which is extremely advantageous in uniformly dispersing the contact pressure between each air cell and the support object. Moreover, since it is not necessary to use an attachment member separately, it can manufacture at low cost.

図１乃至図６は本発明の一実施形態を示すもので、図１はクッションの要部側面断面図、図２はエアーセルを取付ける前のクッションの要部側面断面図、図３はクッションの平面図、図４は図３におけるＡ−Ａ線断面図、図５及び図６はエアーセルの動作説明図である。尚、以下の文章中の方向の説明は図３及び図４に示した方向に準ずる。 1 to 6 show an embodiment of the present invention. FIG. 1 is a side sectional view of an essential part of the cushion, FIG. 2 is a side sectional view of an essential part of the cushion before mounting an air cell, and FIG. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3, and FIGS. 5 and 6 are explanatory views of the operation of the air cell. In addition, description of the direction in the following sentences applies to the direction shown in FIG.3 and FIG.4.

本実施形態のクッションは、複数のエアーセル１０と、各エアーセル１０が互いに略水平方向に並ぶように着脱自在に取付けられるベース部材２０と、各エアーセル１０から成るエアーセル群の左右方向の両側に設けられた複数のサイドエアーセル３０と、エアーセル群の前端側における左右方向中央に設けられた前端側エアーセル４０と、前端側エアーセル４０の左右方向両側にそれぞれ設けられた前端支持部材５０とを備えている（図３参照）。このクッションは例えば車椅子に載置されて使用される。各エアーセル１０は着座者の臀部Ｈの下面を支持するように配置され、各サイドエアーセル３０は着座者の臀部Ｈの側面側を支持するように配置されている。また、前端側エアーセル４０は着座者の両大腿の間に配置され、各前端支持部材５０は着座者の両大腿を支持するように配置されている。 The cushion of the present embodiment is provided on both sides in the left-right direction of a plurality of air cells 10, a base member 20 that is detachably attached so that the air cells 10 are arranged in a substantially horizontal direction, and an air cell group that includes the air cells 10. A plurality of side air cells 30, a front end side air cell 40 provided at the center in the left-right direction on the front end side of the air cell group, and a front end support member 50 provided on each side in the left-right direction of the front end side air cell 40 ( (See FIG. 3). This cushion is used by being mounted on a wheelchair, for example. Each air cell 10 is arranged to support the lower surface of the seated person's buttocks H, and each side air cell 30 is arranged to support the side surface side of the seated person's buttocks H. Further, the front end side air cell 40 is disposed between both thighs of the seated person, and each front end support member 50 is disposed so as to support both thighs of the seated person.

各エアーセル１０は軟質のゴムやプラスチック等の可撓性の材料から成る。また、各エアーセル１０は、上方に向かって延びるように形成されるとともに下端が開口している空気袋１１と、空気袋１１の下端の開口部を形成している開口縁部１２とを有する。空気袋１１と開口縁部１２とは一体に形成されている。 Each air cell 10 is made of a flexible material such as soft rubber or plastic. Each air cell 10 has an air bag 11 which is formed to extend upward and whose lower end is open, and an opening edge 12 which forms an opening at the lower end of the air bag 11. The air bag 11 and the opening edge 12 are integrally formed.

空気袋１１は、上下方向に延びる円筒形状の側面部１１ａと、側面部１１ａの上端を閉鎖するように形成された上端部１１ｂとを有する。側面部１１ａ及び上端部１１ｂは略均一な厚さ寸法を有する薄膜状に形成され、開口縁部１２は側面部１１ａの下端に設けられている。開口縁部１２は側面部１１ａよりも大きな厚さ寸法を有し、側面部１１ａよりも径方向内側に突出している。開口縁部１２の外周面には全周に亘って延びるように形成された係止溝１２ａが設けられている。空気袋１１の側面部１１ａには凹状部１１ｃが設けられ、凹状部１１ｃは側面部１１ａを形成する薄膜の上下方向所定範囲をエアーセル１０の全周に亘ってエアーセル１０の内側に突出させることにより設けられている。 The air bag 11 has a cylindrical side surface portion 11a extending in the vertical direction, and an upper end portion 11b formed so as to close the upper end of the side surface portion 11a. The side surface portion 11a and the upper end portion 11b are formed in a thin film shape having a substantially uniform thickness, and the opening edge portion 12 is provided at the lower end of the side surface portion 11a. The opening edge portion 12 has a thickness dimension larger than that of the side surface portion 11a, and protrudes radially inward from the side surface portion 11a. The outer peripheral surface of the opening edge portion 12 is provided with a locking groove 12a formed so as to extend over the entire circumference. A concave portion 11c is provided on the side surface portion 11a of the air bag 11, and the concave portion 11c projects a predetermined range in the vertical direction of the thin film forming the side surface portion 11a to the inside of the air cell 10 over the entire circumference of the air cell 10. Is provided.

ベース部材２０はエアーセル１０の材料よりも硬質のゴムやプラスチック等の可撓性を有する材料から成り、平板状に形成されている。ベース部材２０の上面には各エアーセル１０にそれぞれ対応する複数の取付穴２１が設けられ、各取付穴２１は上方に向かって開口するように形成されている。各取付穴２１の内周面には全周に亘って径方向内側に突出する係止突起２１ａが設けられている。 The base member 20 is made of a material having flexibility such as harder rubber or plastic than the material of the air cell 10 and is formed in a flat plate shape. A plurality of mounting holes 21 respectively corresponding to the air cells 10 are provided on the upper surface of the base member 20, and each mounting hole 21 is formed to open upward. A locking projection 21a is provided on the inner peripheral surface of each mounting hole 21 so as to protrude radially inward over the entire circumference.

即ち、取付穴２１の内周面にエアーセル１０の開口縁部１２の外周面が嵌合するとともに、開口縁部１２の外周面の係止溝１２ａが取付穴２１の内周面の係止突起２１ａに下方から係止することにより、各エアーセル１０がベース部材２０に取付けられる（図１及び図２参照）。ここで、開口縁部１２が可撓性を有することから、開口縁部１２を径方向内側に撓ませながら開口縁部１２を取付穴２１の内側に配置し、開口縁部１２の撓みを解除することにより、開口縁部１２の外周面が取付穴２１の内周面に嵌合するとともに、開口縁部１２の係止溝１２ａが取付穴２１の係止突起２１ａに係止する。 That is, the outer peripheral surface of the opening edge portion 12 of the air cell 10 is fitted to the inner peripheral surface of the mounting hole 21, and the locking groove 12 a on the outer peripheral surface of the opening edge portion 12 is the locking protrusion on the inner peripheral surface of the mounting hole 21. Each air cell 10 is attached to the base member 20 by latching to 21a from below (refer FIG.1 and FIG.2). Here, since the opening edge portion 12 has flexibility, the opening edge portion 12 is disposed inside the mounting hole 21 while the opening edge portion 12 is bent inward in the radial direction, and the bending of the opening edge portion 12 is released. As a result, the outer peripheral surface of the opening edge 12 is fitted to the inner peripheral surface of the mounting hole 21, and the locking groove 12 a of the opening edge 12 is locked to the locking protrusion 21 a of the mounting hole 21.

各サイドエアーセル３０及び前端側エアーセル４０は下端に開口部を有するとともに上方に向かって延びる袋状に形成され、各サイドエアーセル３０及び前端側エアーセル４０の下端側はベース部材２０に固定されている。各前端支持部材５０は発泡ウレタン等の可撓性材料から成り、下端側がベース部材２０に固定されている。 Each side air cell 30 and front end side air cell 40 are formed in a bag shape having an opening at the lower end and extending upward, and the lower end sides of each side air cell 30 and front end side air cell 40 are fixed to the base member 20. Each front end support member 50 is made of a flexible material such as urethane foam, and the lower end side is fixed to the base member 20.

ベース部材２０には空気通路２０ａが形成され、空気通路２０ａは各エアーセル１０，３０，４０の開口部を介して各エアーセル１０，３０，４０内に連通するとともに、図示しない空気量調整装置に接続されている。即ち、空気量調整装置によって各エアーセル１０，３０，４０内の空気量を調整することにより、着座者の臀部Ｈに加わる圧力を調整可能である。 An air passage 20 a is formed in the base member 20, and the air passage 20 a communicates with each air cell 10, 30, 40 through the opening of each air cell 10, 30, 40 and is connected to an air amount adjusting device (not shown). Has been. That is, the pressure applied to the seated person's buttocks H can be adjusted by adjusting the amount of air in each of the air cells 10, 30, and 40 by the air amount adjusting device.

以上のように構成されたクッションは、着座者が着座すると、各エアーセル１０，３０，４０内の空気が空気通路２０ａを介して移動し、各エアーセル１０，３０，４０内の空気圧が同等になる。 In the cushion configured as described above, when a seated person sits down, the air in each air cell 10, 30, 40 moves through the air passage 20a, and the air pressure in each air cell 10, 30, 40 becomes equal. .

ところで、各エアーセル１０は着座者の臀部Ｈの下面を支持するように配置されているが、着座者によって臀部Ｈの形状や体重が異なるので、着座者に応じて各エアーセル１０の高さ寸法や形状を変更することが好ましい。ここで、各エアーセル１０はベース部材２０に着脱自在に取付けられることから、各エアーセル１０をそれぞれ高さ寸法や形状の異なる他のエアーセルに任意に交換することができる。 By the way, although each air cell 10 is arranged so as to support the lower surface of the seated person's buttocks H, the shape and weight of the buttocks H are different depending on the seated person. It is preferable to change the shape. Here, since each air cell 10 is detachably attached to the base member 20, each air cell 10 can be arbitrarily replaced with another air cell having a different height dimension and shape.

また、各エアーセル１０は着座者の臀部Ｈの下面を支持するように配置されているので、各エアーセル１０の空気袋１１は着座者の臀部Ｈによって上下方向に潰れ、各エアーセル１０内の空気圧１１が外気圧に比べて高くなる。ここで、各エアーセル１０はベース部材２０に着脱自在に取付けられているが、可撓性の開口縁部１２の外周面が取付穴２１の内周面に嵌合することにより、各エアーセル１０がベース部材２０に取付けられていることから、各エアーセル１０内の空気圧が高くなると、開口縁部１２の外周面が取付穴２１の内周面に押付けられる（図５参照）。即ち、エアーセル１０をベース部材２０に取付けるための取付部材を別途用いなくても、開口縁部１２の外周面と取付穴２１の内周面との間から空気漏れが生じない。また、開口縁部１２の外周面が取付穴２１の内周面に下方から係止することにより、各エアーセル１０がベース部材２０に取付けられていることから、エアーセル１０をベース部材２０に取付けるための取付部材を別途用いなくても、エアーセル１０が取付穴２１から容易に外れることがない。 Further, since each air cell 10 is arranged to support the lower surface of the seated person's buttocks H, the air bag 11 of each air cell 10 is crushed in the vertical direction by the seated person's buttocks H, and the air pressure 11 in each air cell 10 Becomes higher than the atmospheric pressure. Here, each air cell 10 is detachably attached to the base member 20, but when the outer peripheral surface of the flexible opening edge 12 is fitted to the inner peripheral surface of the mounting hole 21, each air cell 10 is Since it is attached to the base member 20, when the air pressure in each air cell 10 increases, the outer peripheral surface of the opening edge 12 is pressed against the inner peripheral surface of the mounting hole 21 (see FIG. 5). That is, air leakage does not occur between the outer peripheral surface of the opening edge 12 and the inner peripheral surface of the mounting hole 21 without using a separate mounting member for mounting the air cell 10 to the base member 20. In addition, since each air cell 10 is attached to the base member 20 by locking the outer peripheral surface of the opening edge portion 12 to the inner peripheral surface of the attachment hole 21 from below, the air cell 10 is attached to the base member 20. Even if the mounting member is not used separately, the air cell 10 is not easily detached from the mounting hole 21.

また、側面部１１ａに凹状部１１ｃが設けられ、凹状部１１ｃは側面部１１ａを形成する薄膜の上下方向所定範囲をエアーセル１０の全周に亘ってエアーセル１０の内側に突出させることにより設けられているので、側面部１１ａにおいて凹状部１１ｃが設けられた部分は側面部１１ａの他の部分よりも上下方向に変形し易い。このため、図６に示すように、エアーセル１０に水平方向の力が加わった際に、側面部１１ａのうち圧縮方向の力が加わる範囲Ｂでは、側面部１１ａが凹状部１１ｃを起点にして上下方向に円滑に変形し、側面部１１ａのうち範囲Ｂと周方向反対側の範囲Ｃに上方に向かう力が加わり難い。これに対し、側面部１１ａに凹状部１１ｃが設けられていない場合は、前記範囲Ｂが上下方向に円滑に変形しないので、前記範囲Ｃに上方に向かう力が加わり易く、前記範囲Ｃの下側の開口縁部１２が取付穴２１から外れる原因となる。即ち、側面部１１ａに凹状部１１ｃが設けられているので、エアーセル１０に水平方向の力が加わった際でも、前記範囲Ｃに上方に向かう力が加わり難く、開口縁部１２が取付穴２１に確実に保持される。 Further, the side surface portion 11a is provided with a concave portion 11c, and the concave portion 11c is provided by projecting a predetermined range in the vertical direction of the thin film forming the side surface portion 11a to the inside of the air cell 10 over the entire circumference of the air cell 10. Therefore, the portion where the concave portion 11c is provided in the side surface portion 11a is more easily deformed in the vertical direction than the other portion of the side surface portion 11a. Therefore, as shown in FIG. 6, when a force in the horizontal direction is applied to the air cell 10, in the range B where the force in the compression direction is applied to the side surface portion 11a, the side surface portion 11a moves up and down starting from the concave portion 11c. It deforms smoothly in the direction, and it is difficult to apply an upward force to the range C on the side opposite to the range B in the side surface portion 11a. On the other hand, when the concave portion 11c is not provided in the side surface portion 11a, the range B is not smoothly deformed in the vertical direction, so that an upward force is easily applied to the range C, and the lower side of the range C This causes the opening edge portion 12 to be detached from the mounting hole 21. That is, since the concave portion 11c is provided on the side surface portion 11a, even when a horizontal force is applied to the air cell 10, an upward force is not easily applied to the range C, and the opening edge portion 12 is formed in the mounting hole 21. Holds securely.

このように、本実施形態によれば、各エアーセル１０をそれぞれ高さ寸法や形状の異なる他のエアーセルに任意に変更することができ、また、エアーセル１０をベース部材２０に取付けるための取付部材を別途用いなくても、開口縁部１２の外周面と取付穴２１の内周面との間から空気漏れが生ずることがなく、開口縁部１２が取付穴２１から容易に外れることもないので、着座者に応じて各エアーセル１０の高さ寸法や形状を容易に変更することができ、各エアーセル１０と着座者の臀部Ｈとの接触圧を均一に分散させる上で極めて有利である。また、取付部材を別途用いる必要がないので、安価に製作できる。 Thus, according to the present embodiment, each air cell 10 can be arbitrarily changed to another air cell having a different height dimension and shape, and an attachment member for attaching the air cell 10 to the base member 20 can be provided. Even if it is not used separately, air leakage does not occur between the outer peripheral surface of the opening edge 12 and the inner peripheral surface of the mounting hole 21, and the opening edge 12 does not easily come off from the mounting hole 21. The height dimension and shape of each air cell 10 can be easily changed according to the seated person, which is extremely advantageous in uniformly dispersing the contact pressure between each air cell 10 and the seated person's buttocks H. Moreover, since it is not necessary to use an attachment member separately, it can manufacture at low cost.

また、開口縁部１２の外周面には全周に亘って延びるように形成された係止溝１２ａが設けられるとともに、取付穴２１の内周面には全周に亘って係止突起２１ａが設けられ、エアーセル１０をベース部材２０に取付ける際に、係止溝１２ａが係止突起２１ａに下方から係止する。即ち、開口縁部１２の外周面が全周に亘って取付穴２１の内周面に下方から係止することから、開口縁部１２が取付穴２１に確実に保持され、エアーセル１０がベース部材２０から容易に外れることがない。 Further, the outer peripheral surface of the opening edge portion 12 is provided with a locking groove 12a formed so as to extend over the entire circumference, and a locking projection 21a is formed over the entire circumference on the inner peripheral surface of the mounting hole 21. When the air cell 10 is provided and attached to the base member 20, the locking groove 12a is locked to the locking projection 21a from below. That is, since the outer peripheral surface of the opening edge 12 is engaged with the inner peripheral surface of the mounting hole 21 from below over the entire periphery, the opening edge 12 is securely held in the mounting hole 21 and the air cell 10 is fixed to the base member. It will not be easily removed from 20.

また、エアーセル１０の側面部１１ａには凹状部１１ｃが設けられ、凹状部１１ｃは側面部１１ａを形成する薄膜の上下方向所定範囲をエアーセル１０の全周に亘ってエアーセルの内側に突出させることにより設けられているので、凹状部１１ｃが設けられた部分が側面部１１ａの他の部分よりも上下方向に変形し易くなり、エアーセル１０に水平方向の力が加わった際でも、開口縁部１２に取付穴２１から外れる方向の力が加わり難い。即ち、エアーセル１０がベース部材２０から容易に外れることがない。 Further, the side surface portion 11a of the air cell 10 is provided with a concave portion 11c, and the concave portion 11c projects the predetermined range in the vertical direction of the thin film forming the side surface portion 11a to the inside of the air cell over the entire circumference of the air cell 10. Since it is provided, the portion provided with the concave portion 11c is more easily deformed in the vertical direction than the other portions of the side surface portion 11a, and even when a horizontal force is applied to the air cell 10, the opening edge portion 12 is It is difficult to apply a force in a direction away from the mounting hole 21. That is, the air cell 10 is not easily detached from the base member 20.

尚、本実施形態では、開口縁部１２の外周面の全周に亘って延びるように設けられた係止溝１２ａを示したが、図７に示すように、開口縁部１２の外周面の周方向複数個所（図７では３箇所）に分割された係止溝１２ａを設け、この係止溝１２ａと取付穴２１の係止突起２１ａとを係止させることも可能であり、係止溝１２ａが全周に亘って設けられている場合と同様の効果が得られる。図７はエアーセル１０を係止溝１２ａが設けられた高さで切断した平面断面図である。 In addition, in this embodiment, although the locking groove 12a provided so that it might extend over the perimeter of the outer peripheral surface of the opening edge part 12 was shown, as shown in FIG. It is also possible to provide locking grooves 12a divided at a plurality of circumferential positions (three positions in FIG. 7), and to lock the locking grooves 12a and the locking projections 21a of the mounting holes 21. The same effect as when 12a is provided over the entire circumference can be obtained. FIG. 7 is a plan sectional view of the air cell 10 cut at a height at which the locking groove 12a is provided.

また、本実施形態では、開口縁部１２の外周面に係止溝１２ａを設け、取付穴２１の内周面に係止突起２１ａを設けたものを示したが、図８に示すように、開口縁部１２の外周面に係止溝１２ａの代わりに係止突起１２ｂを設け、取付穴２１の内周面に係止突起２１ａの代わりに係止溝２１ｂを設けることも可能である。この場合でも、開口縁部１２の外周面が取付穴２１の内周面に下方から係止するので、開口縁部１２が取付穴２１から容易に外れることがない。 Further, in the present embodiment, the locking groove 12a is provided on the outer peripheral surface of the opening edge 12 and the locking protrusion 21a is provided on the inner peripheral surface of the mounting hole 21, but as shown in FIG. It is also possible to provide a locking projection 12b in place of the locking groove 12a on the outer peripheral surface of the opening edge 12, and to provide a locking groove 21b in place of the locking projection 21a on the inner peripheral surface of the mounting hole 21. Even in this case, since the outer peripheral surface of the opening edge 12 is locked to the inner peripheral surface of the mounting hole 21 from below, the opening edge 12 is not easily detached from the mounting hole 21.

また、図９に示すように、開口縁部１２の外周面の下端側を上方に向かって徐々に外径が小さくなるように形成するとともに、取付穴２１の上端側を上方に向かって徐々に外径が小さくなるように形成することも可能である。この場合でも、開口縁部１２の外周面が取付穴２１の内周面に嵌合するとともに、開口縁部１２の外周面が取付穴２１の内周面に下方から係止することにより、エアーセル１０が取付穴２１に着脱自在に取付けられ、開口縁部１２に係止溝１２ａを設けるとともに取付穴２１に係止突起２１ａを設ける場合と同様の効果が得られる。 Further, as shown in FIG. 9, the lower end side of the outer peripheral surface of the opening edge 12 is formed so that the outer diameter gradually decreases upward, and the upper end side of the mounting hole 21 is gradually increased upward. It is also possible to form the outer diameter to be small. Even in this case, the outer peripheral surface of the opening edge 12 is fitted to the inner peripheral surface of the mounting hole 21, and the outer peripheral surface of the opening edge 12 is locked to the inner peripheral surface of the mounting hole 21 from below. 10 is detachably attached to the attachment hole 21, and the same effect as that obtained when the engagement groove 12 a is provided in the opening edge 12 and the engagement protrusion 21 a is provided in the attachment hole 21 is obtained.

尚、本実施形態では、凹状部１１ｃがエアーセル１０の全周に亘って延びるように設けられたものを示したが、図１０に示すように、側面部１１ａの周方向複数個所（図１０では３箇所）をエアーセル１０の内側に突出させることにより凹状部１１ｃを設けることも可能である。この場合、凹状部１１ｃが設けられている３箇所を合わせたものが特許請求の範囲に記載した周方向所定範囲に相当する。また、図１０はエアーセル１０を凹状部１１ｃが設けられた高さで切断した平面断面図である。このような凹状部１１ｃが設けられた場合でも、凹状部１１ｃが設けられた部分は側面部１１ａの他の部分よりも上下方向に変形し易く、凹状部１１ｃが全周に亘って設けられている場合と同様の効果を得ることができる。 In the present embodiment, the concave portion 11c is provided so as to extend over the entire circumference of the air cell 10. However, as shown in FIG. It is also possible to provide the concave portion 11 c by projecting the three portions) to the inside of the air cell 10. In this case, a combination of the three locations where the concave portions 11c are provided corresponds to the circumferential predetermined range described in the claims. FIG. 10 is a plan sectional view of the air cell 10 cut at a height at which the concave portion 11c is provided. Even when such a concave portion 11c is provided, the portion provided with the concave portion 11c is more easily deformed in the vertical direction than the other portions of the side surface portion 11a, and the concave portion 11c is provided over the entire circumference. It is possible to obtain the same effect as when it is present.

また、本実施形態では、空気袋１１の側面部１１ａに凹状部１１ｃを設けたものを示したが、図１１に示すように、凹状部１１ｃの代わりに薄肉部１１ｄを設けることも可能である。この場合、薄肉部１１ｄは側面部１１ａを形成する薄膜の上下方向所定範囲をエアーセル１０の全周に亘って側面部１１ａの他の部分よりも薄肉に形成することにより設けられる。側面部１１ａに薄肉部１１ｄを設けると、側面部１１ａにおいて薄肉部１１ｄが設けられた部分は側面部１１ａの他の部分よりも上下方向に変形し易くなる。このため、側面部１１ａに凹状部１１ｃが設けられた場合と同様の効果を得ることができる。さらに、図１０と同様に、側面部１１ａの周方向複数個所を側面部１１ａの他の部分よりも薄肉に形成することにより薄肉部１１ｄを設けることも可能である。 In the present embodiment, the side portion 11a of the air bag 11 is provided with the concave portion 11c. However, as shown in FIG. 11, a thin portion 11d can be provided instead of the concave portion 11c. . In this case, the thin part 11d is provided by forming a predetermined range in the vertical direction of the thin film forming the side part 11a thinner than the other part of the side part 11a over the entire circumference of the air cell 10. If the thin part 11d is provided in the side part 11a, the part in which the thin part 11d was provided in the side part 11a becomes easy to deform | transform into the up-down direction rather than the other part of the side part 11a. For this reason, the same effect as the case where the recessed part 11c is provided in the side part 11a can be acquired. Furthermore, similarly to FIG. 10, it is also possible to provide the thin portion 11d by forming a plurality of circumferential portions of the side surface portion 11a thinner than the other portions of the side surface portion 11a.

尚、本実施形態では、側面部１１ａが円筒形状であるエアーセル１０に凹状部１１ｃ及び係止溝１２ａを設けたものを示したが、側面部１１ａが断面多角形の筒形状である場合にも、エアーセル１０に凹状部１１ｃ及び係止溝１２ａを設けることができる。この場合、ベース部材２０の取付穴２１の形状をエアーセル１０の形状に応じて変更する必要がある。また、各サイドエアーセル３０や前端側エアーセル４０を各エアーセル１０と同様にベース部材２０に着脱自在に取付けることができ、各サイドエアーセル３０や前端側エアーセル４０の側面に凹状部を設けることも可能である。 In the present embodiment, the air cell 10 in which the side surface portion 11a has a cylindrical shape is provided with the concave portion 11c and the locking groove 12a. However, the side surface portion 11a also has a cylindrical shape with a polygonal cross section. The air cell 10 can be provided with a concave portion 11c and a locking groove 12a. In this case, it is necessary to change the shape of the mounting hole 21 of the base member 20 according to the shape of the air cell 10. Moreover, each side air cell 30 and the front end side air cell 40 can be detachably attached to the base member 20 similarly to each air cell 10, and a concave portion can be provided on the side surface of each side air cell 30 or the front end side air cell 40. is there.

本発明における一実施形態を示すクッションの要部側面断面図Side surface sectional drawing of the principal part of the cushion which shows one Embodiment in this invention エアーセルを取付ける前のクッションの要部側面断面図Side sectional view of the main part of the cushion before mounting the air cell クッションの平面図Top view of cushion 図３におけるＡ−Ａ線断面図AA line sectional view in FIG. エアーセルの動作説明図Air cell operation explanatory diagram エアーセルの動作説明図Air cell operation explanatory diagram 本実施形態の第１変形例を示すエアーセルの平面断面図Plan sectional drawing of the air cell which shows the 1st modification of this embodiment 本実施形態の第２変形例を示すクッションの要部側面断面図Side surface sectional drawing of the principal part of the cushion which shows the 2nd modification of this embodiment. 本実施形態の第３変形例を示すクッションの要部側面断面図Side surface sectional drawing of the principal part of the cushion which shows the 3rd modification of this embodiment. 本実施形態の第４変形例を示すエアーセルの平面断面図Plan sectional drawing of the air cell which shows the 4th modification of this embodiment 本実施形態の第５変形例を示すクッションの要部側面断面図Side surface sectional drawing of the principal part of the cushion which shows the 5th modification of this embodiment.

Explanation of symbols

１０…エアーセル、１１…空気袋、１１ａ…側面部、１１ｂ…上端部、１１ｃ…凹状部、１１ｄ…薄肉部、１２…開口縁部、１２ａ…係止溝、１２ｂ…係止突起、２０…ベース部材、２０ａ…空気通路、２１…取付穴、２１ａ…係止突起、２１ｂ…係止溝、３０…サイドエアーセル、４０…前端側エアーセル、５０…前端支持部材。 DESCRIPTION OF SYMBOLS 10 ... Air cell, 11 ... Air bag, 11a ... Side part, 11b ... Upper end part, 11c ... Recessed part, 11d ... Thin-walled part, 12 ... Opening edge part, 12a ... Locking groove, 12b ... Locking protrusion, 20 ... Base 20a ... air passage, 21 ... mounting hole, 21a ... locking projection, 21b ... locking groove, 30 ... side air cell, 40 ... front end side air cell, 50 ... front end support member.

Claims

A plurality of air cells formed in a bag shape extending upward and having a flexible opening edge at the lower end;
A base member that is detachably attached so that the air cells are aligned in a substantially horizontal direction,
A plurality of mounting holes corresponding to each air cell are provided in the base member, and each mounting hole is formed to open upward,
The outer peripheral surface of the opening edge of the air cell is fitted to the inner peripheral surface of the mounting hole and locked from below over the entire periphery, so that each air cell can be attached to the base member. cushion.

A concave portion is provided on the side surface of the air cell,
A concave portion, the cushion of claim 1 wherein the provided by protruding inwardly of the air cells throughout the vertical direction by a predetermined range of the thin film for forming the side surfaces of the air cells in the circumferential direction by a predetermined range of the air cells.

The cushion according to claim 2, wherein the concave portion is provided so as to extend over the entire circumference of the air cell.

Provide a thin wall on the side of the air cell,
The thin portion, according to claim 1, characterized in that provided by forming thinner than other portions of the side over the vertical direction by a predetermined range of the thin film for forming the side surfaces of the air cells in the circumferential direction by a predetermined range of air cells Cushions.

The cushion according to claim 4, wherein the thin portion is provided so as to extend over the entire circumference of the air cell.