CN208658406U - Float cushion - Google Patents

Abstract

One kind is floatd cushion, including cushion and back cushion；Cushion includes the ride surface being disposed adjacent and supporting surface；Back cushion includes the first sub- back cushion and the second sub- back cushion, first sub- back cushion includes bearing surface, first leans against face and the first stopping surface, bearing surface and first lean against face link position be connected to the link position of ride surface and supporting surface, and bearing surface is connected to supporting surface for activity, first, which leans against face, is connected to ride surface for activity, and the sub- back cushion of link position and second that the first sub- back cushion is used to lean against face and the first stopping surface by first is rotatablely connected；Second sub- back cushion leans against face and the second stopping surface including second, second leans against face and the link position of the second stopping surface is connected to the first link position for leaning against face Yu the first stopping surface, and second stopping surface activity be connected to the first stopping surface, second, which leans against face activity, is connected to first and leans against face.The above-mentioned cushion that floats, has the first bearing height or the second bearing height when in use, and the cushion that floats is not needing in use, reducing occupied space.

Description

Float cushion

Technical field

The utility model relates to mattress technology field, float cushion more particularly to one kind.

Background technique

In existing house, it is typically designed with the platform that floats, is sat on for people and is talked of everything under the sun, appreciates beautiful scenery.In order to make People sit it is comfortable, it will usually cushion is placed on platform floaing, cushion that especially can be lying or leaning makes people feel more to put Pine.

Existing cushion that can be lying or leaning, in order to adapt to the height of human body, length is long, so that during transportation, Or storage is got up when not in use, very occupied space, it has not been convenient to transport and storage, and since it is fixed setting, cushion Back cushion bearing height is inconvenient to adjust.

Utility model content

Based on this, it is necessary to provide one kind and be not take up space, convenient transportation and storage when not in use, pad when in use The bearing height of the back cushion of son facilitates the cushion that floats of adjusting.

One kind is floatd cushion, comprising: cushion and back cushion；The cushion includes the ride surface being disposed adjacent and supporting surface；It is described Back cushion includes the first sub- back cushion and the second sub- back cushion, and the first sub- back cushion includes the bearing surface being successively disposed adjacent, the first back By face and the first stopping surface, the bearing surface and described first lean against face link position be connected to the ride surface and the branch The link position in support face, so that the first sub- back cushion and the cushion opposed rotatable are arranged, and the bearing surface is used for Activity is connected to the supporting surface when the relatively described cushion of first sub- back cushion turns to first position, and described first leans against face For when the relatively described cushion of the described first sub- back cushion turns to the second position activity be connected to the ride surface, described first The link position that sub- back cushion is used to lean against face and first stopping surface by described first connects with the described second sub- back cushion rotation It connects；The second sub- back cushion includes that second be disposed adjacent leans against face and the second stopping surface, and described second leans against face and described The link position of two stopping surfaces is connected to the described first link position for leaning against face Yu first stopping surface, so that described second Sub- back cushion is arranged with the described first sub- back cushion opposed rotatable, and second stopping surface is for opposite in the described second sub- back cushion Activity is connected to first stopping surface when first sub- back cushion turns to the third place, and described second leans against face in institute It states activity when the relatively described first sub- back cushion of the second sub- back cushion turns to four positions and is connected to described first and lean against face.

The shape that the described first shape for leaning against face leans against face with described second in one of the embodiments, matches, And when the second stopping surface activity is connected to first stopping surface, described first, which leans against face and described second, leans against face A plane is collectively formed.

It described first leans against face and described second in one of the embodiments, and leans against the shape for the plane that face is collectively formed Match with the shape of the ride surface.

The shape of first stopping surface and the shape of second stopping surface match in one of the embodiments,.

The shape of the bearing surface and the shape of the supporting surface match in one of the embodiments,.

The bearing surface is abutted with the supporting surface in one of the embodiments, and described first lean against face with it is described The angle of ride surface is obtuse angle.

The described first angle leaned against between face and the ride surface is 120 °~150 ° in one of the embodiments,.

The described first angle leaned against between face and the ride surface is 135 ° in one of the embodiments,.

Second stopping surface is abutted with first stopping surface in one of the embodiments, and described second leans against Angle between face and the ride surface is obtuse angle.

In one of the embodiments, described second the corner dimension of face and the ride surface is leaned against equal to first back Corner dimension by face and the ride surface.

The above-mentioned cushion that floats, on the one hand, so that floaing cushion when need to use, make the bearing surface and seat of the first sub- back cushion first The supporting surface of pad abuts, and the first stopping surface of the first sub- back cushion and the second stopping surface of the second sub- back cushion can then abutted, So that the back cushion for the cushion that floats is able to maintain that the first bearing height is used, the first of the first sub- back cushion then can also be made to lean against face Face is leaned against with the second of the second sub- back cushion to abut, so that the back cushion for the cushion that floats maintains the second bearing height to be used, adapts to people Different use demands；On the other hand, so that the cushion that floats is not needing to make first in use, when as needed to transport or store First stopping surface of the first sub- back cushion is abutted with the second stopping surface of the second sub- back cushion, then leans against the first of the first sub- back cushion Face is abutted with the ride surface of cushion, while being made the second of the second sub- back cushion to lean against face and also being located in the ride surface of cushion, so that The cushion that floats folds, and reduces occupied space, convenient transportation and storage.

Detailed description of the invention

Fig. 1 be one embodiment in float cushion a state structural schematic diagram；

Fig. 2 be one embodiment in float cushion another state structural schematic diagram；

Fig. 3 be one embodiment in float cushion another state structural schematic diagram.

Specific embodiment

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs The limitation for the specific embodiment opened.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention, It is a, three etc., unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet Include any and all combinations of one or more related listed items.

The cushion for example, one kind is floatd, comprising: cushion and back cushion；The cushion includes the ride surface being disposed adjacent and supporting surface； The back cushion includes the first sub- back cushion and the second sub- back cushion, and the first sub- back cushion includes the bearing surface being successively disposed adjacent, the One leans against face and the first stopping surface, and the link position that the bearing surface and described first lean against face is connected to the ride surface and institute The link position of supporting surface is stated, so that the first sub- back cushion and the cushion opposed rotatable are arranged, and the bearing surface is used In when the relatively described cushion of the described first sub- back cushion turns to first position activity be connected to the supporting surface, first back The activity when the relatively described cushion of the described first sub- back cushion turns to the second position, which is used for, by face is connected to the ride surface, it is described The link position and the described second sub- back cushion that first sub- back cushion is used to lean against face and first stopping surface by described first turn Dynamic connection；The second sub- back cushion includes that second be disposed adjacent leans against face and the second stopping surface, and described second leans against face and institute The link position for stating the second stopping surface is connected to the described first link position for leaning against face Yu first stopping surface, so that described Second sub- back cushion is arranged with the described first sub- back cushion opposed rotatable, and second stopping surface is used in the described second sub- back cushion Activity is connected to first stopping surface when relatively described first sub- back cushion turns to the third place, and described second, which leans against face, is used for When the relatively described first sub- back cushion of the described second sub- back cushion turns to four positions, activity is connected to described first and leans against face.Tool Body, first position are position when the first sub- back cushion abuts just with supporting surface, the second position be the first sub- back cushion with Position when ride surface abuts just, the third place are position when the second sub- back cushion abuts just with the first stopping surface, the Four positions are that the second sub- back cushion leans against position when face abuts just with first.

It should be noted that shape matches in the utility model and its each embodiment, i.e., shape is identical, size is identical； The two shape matches, i.e., the two shape is identical, size is identical, and so on.

In the present embodiment, cushion is rotatablely connected by the link position and the first sub- back cushion of ride surface and supporting surface, thus The bearing surface activity of first sub- back cushion is connected to the supporting surface of cushion, and the first of the first sub- back cushion leans against face activity and be connected to cushion Ride surface, and the first sub- back cushion leans against the link position in face and the first stopping surface by first and rotates company with the second sub- back cushion It connects, so that the second stopping surface activity of the second sub- back cushion is connected to the first stopping surface of the first sub- back cushion, the of the second sub- back cushion Two, which lean against face activity, is connected to the first of the first sub- back cushion and leans against face, on the one hand, so that floaing cushion when need to use, makes first The bearing surface of first sub- back cushion is abutted with the supporting surface of cushion, then can make the first stopping surface and the second son of the first sub- back cushion Second stopping surface of back cushion abuts, so that the back cushion for the cushion that floats is able to maintain that the first bearing height is used, then can also make The first of first sub- back cushion, which leans against face and lean against face with the second of the second sub- back cushion, to abut, so that the back cushion for the cushion that floats maintains second Support height is used, and the different use demands of people are adapted to；On the other hand, so that the cushion that floats is not needing in use, such as needs When transport or storage, first abut the first stopping surface of the first sub- back cushion and the second stopping surface of the second sub- back cushion, then Make the first of the first sub- back cushion to lean against face to abut with the ride surface of cushion, while making the second of the second sub- back cushion to lean against face also position In in the ride surface of cushion, so that the cushion that floats folds, reduce occupied space, convenient transportation and storage.

Fig. 1, Fig. 2 and Fig. 3 are please referred to, is respectively the structural schematic diagram of the different conditions of the cushion 10 that floats of an embodiment. The cushion 10 that floats includes: cushion 100 and back cushion 200；Cushion 100 includes the ride surface 110 being disposed adjacent and supporting surface 113, cushion 100 are rotatablely connected for the link position 2112 by ride surface 110 and supporting surface 113 with back cushion 200, specifically, ride surface 110 with the link position 2112 of supporting surface 113 in straight line setting.

Back cushion 200 includes the first sub- back cushion 210 and the second sub- back cushion 220, and the first sub- back cushion 210 connects with the rotation of cushion 100 It connects, the first sub- back cushion 210 is rotatablely connected by the link position 2112 and cushion 100 of ride surface 110 and supporting surface 113.First Sub- back cushion 210 includes the bearing surface 213 being successively disposed adjacent, first leans against face 211 and the first stopping surface 212,213 He of bearing surface First link position for leaning against face 211 is connected to the link position 2112 of ride surface 110 Yu supporting surface 113, so that the first son leans on Pad 210 and 100 opposed rotatable of cushion are arranged, and bearing surface 213 is used to turn in the first opposite cushion 100 of sub- back cushion 210 Activity is connected to supporting surface 113 when first position, and first leans against face 211 for rotating in the first sub- back cushion 210 relative to cushion 100 Activity is connected to ride surface 110 when to the second position, and the first sub- back cushion 210 is used to lean against face 211 and the first block by first The link position 2111 in face 212 and the second sub- back cushion 220 are rotatablely connected, and first leans against the connection in face 211 and the first stopping surface 212 Position 2111 is arranged in a straight line, for example, first leans against face 211 towards ride surface 110, bearing surface 213 is towards supporting surface 113. I.e. first sub- back cushion 210 can be relatively rotated with cushion 100, connection of the first sub- back cushion 210 around ride surface 110 and supporting surface 113 When position 2112 turns to an extreme position, the first of the first sub- back cushion 210 leans against the ride surface 110 in face 211 Yu cushion 100 It abuts, when the first sub- back cushion 210 turns to another extreme position around the link position 2112 of ride surface 110 and supporting surface 113, The bearing surface 213 of first sub- back cushion 210 is abutted with the supporting surface 113 of cushion 100.

Second sub- back cushion 220 includes that second be disposed adjacent leans against face 221 and the second stopping surface 222, and second leans against face 221 It is connected to the first link position 2111 for leaning against face 211 and the first stopping surface 212 with the link position of the second stopping surface 222, with Second sub- back cushion 220 and the first sub- 210 opposed rotatable of back cushion are set, and the second stopping surface 222 is used in the second sub- back cushion Activity is connected to the first stopping surface 212 when 220 opposite first sub- back cushions 210 turn to the third place, and second, which leans against face 221, is used for When the second opposite first sub- back cushion 210 of sub- back cushion 220 turns to four positions, activity is connected to first and leans against face 211, for example, For second stopping surface 222 towards the first stopping surface 212, second, which leans against face 221, leans against face 211 towards first.I.e. first sub- back cushion 210 It can be relatively rotated with the second sub- back cushion 220, the connection position that the second sub- back cushion 220 leans against face 211 and the first stopping surface 212 around first When setting 2111 and turning to an extreme position, the first of the first sub- back cushion 210 leans against the second of face 211 and the second sub- back cushion 220 The abutting of face 221 is leaned against, the second sub- back cushion 220 leans against face 211 around first and the link position 2111 of the first stopping surface 212 turns to The first stopping surface 212 of the first sub- back cushion 210 and the second stopping surface 222 of the second sub- back cushion 220 support when another extreme position It connects.

Specifically, cushion 100 further includes the first bottom surface, and the first bottom surface is oppositely arranged with ride surface, and the first bottom surface and branch Support face 113 is disposed adjacent, for example, the first bottom surface is parallel to each other with ride surface, the first sub- back cushion 210 further includes the second bottom surface, the Two bottom surfaces lean against face with first and are oppositely arranged, and the second bottom surface is disposed adjacent with bearing surface, and the second bottom surface is in the first bottom surface On same plane, in use, when bearing surface is connected to supporting surface 113, when the second stopping surface is connected to the first stopping surface, the first bottom Face and the second bottom surface are placed on ground or float on platform, are contacted, are enabled to the platform that floats by the first bottom surface and the second bottom surface The cushion that floats can increase and float the contact area of platform, so that the cushion that floats is more firm when placing and using, have to human body More preferably support effect.

It is appreciated that Fig. 1, which is shown, floats cushion when need to use, make the bearing surface 213 and cushion of the first sub- back cushion 210 100 supporting surface 113 abuts, the second stopping surface 222 of the first stopping surface 212 and the second sub- back cushion 220 of the first sub- back cushion 210 When abutting, so that the back cushion 200 for the cushion that floats is able to maintain that the state of the first bearing height, Fig. 2 show the cushion that floats and is needing to make Used time abuts the bearing surface 213 of the first sub- back cushion 210 with the supporting surface 113 of cushion 100, the first back of the first sub- back cushion 210 When leaning against face 221 with the second of the second sub- back cushion by face 211 and abutting, so that the cushion that floats is able to maintain that the shape of the second bearing height State, Fig. 3 show the cushion that floats and are not needing in use, making the first stopping surface 212 and the second sub- back cushion of the first sub- back cushion 210 220 the second stopping surface 222 abutting, the first of the first sub- back cushion 210 lean against face 211 and abut with the ride surface 110 of cushion 100, The second of the second sub- back cushion 220 to lean against face 221 simultaneously also to be located in the ride surface 110 of cushion 100, so that cushion folding of floaing Together, the smallest state of occupied space.

Specifically, cushion 200 includes cushion body and is filled in the intracorporal sponge block of cushion cover, and the surface of cushion body is set It is equipped with zipper, so that sponge block can be put into or take out cushion body；First sub- back cushion 210 includes the first sub- back cushion body and fills out It fills in the first sub- intracorporal sponge block of pillow sham, the surface of the first sub- back cushion body is provided with zipper, so that sponge block can be put Enter or take out the first sub- back cushion body；Second sub- back cushion 220 is including the second sub- back cushion body and is filled in the second sub- back cushion body The surface of interior sponge block, the second sub- back cushion body is provided with zipper, so that sponge block can be put into or take out the second sub- back cushion Body.For example, cushion body, the first sub- back cushion body and the second sub- back cushion body are fabrics body.For example, cushion body, First sub- back cushion body and the second sub- pillow sham body by integral forming, cushion body, the first sub- back cushion body and the second sub- pillow sham Body is separately filled with a sea compatible with shape size inside cushion body, the first sub- back cushion body and the second sub- pillow sham body Continuous block, the part that the first sub- back cushion body is connected with the second sub- back cushion body is not filled by sponge block so that the first sub- back cushion body Be rotatablely connected with the second sub- back cushion body, the part that the first sub- back cushion body is connected with cushion body be not filled by sponge block so that First sub- back cushion body and cushion body are rotatablely connected.

Referring to Fig. 2, for example, the first of the first sub- back cushion 210 lean against face 211 shape and the second sub- back cushion 220 the Two shapes for leaning against face 221 match, and when 222 activity of the second stopping surface is connected to the first stopping surface 212, first is leaned against Face 211 and second leans against face 221 plane is collectively formed.The first of i.e. first sub- back cushion 210 leans against face 211 and leans on the second son The shape that the second of pad 220 leans against face 221 is identical, size is identical.In this way, the first of the first sub- back cushion 210 leans against face 211 and The second of two sub- back cushions 220 leans against face 221 and can be completely coincident in the state of abutting, avoids using extra material, and make Cushion globality of floaing is more preferable.

Referring to Fig. 3, for example, the first of the first sub- back cushion 210 leans against face 211 and the second of the second sub- back cushion 220 and leans against The shape for the plane that face 221 is collectively formed and the shape of the ride surface 110 of cushion 100 match.The of i.e. first sub- back cushion 210 One, which leans against face 211 and the second of the second sub- back cushion 220, leans against the plane and the ride surface 110 of cushion 100 that face 221 is collectively formed Shape is identical, size is identical.In this way, the second of the first sub- back cushion 210 leans against face 221 and is abutting with the ride surface 110 of cushion 100 First stopping surface 212 of state and the first sub- back cushion 210 is with the second stopping surface 222 of the second sub- back cushion 220 also in the state of abutting When can be completely coincident, avoid using extra material, and the cushion globality that makes to float is more preferable, while making cushion occupied space of floaing It greatly reduces, convenient transportation and storage.

Fig. 1 and Fig. 2 are please referred to, for example, the shape of the first stopping surface 212 of the first sub- back cushion 210 and the second sub- back cushion 220 The shape of the second stopping surface 222 match.The of first stopping surface 212 of the i.e. first sub- back cushion 210 and the second sub- back cushion 220 The shape of two stopping surfaces 222 is identical, size is identical.This way it is possible to avoid using extra material, and make cushion globality of floaing More preferably.

In order to increase the usage comfort for the cushion that floats, for example, referring to Fig. 1, the bearing surface 213 of the first sub- back cushion 210 with The first side of cushion 100 abuts, and the first of the first sub- back cushion 210 leans against between face 211 and the ride surface 110 of cushion 100 Angle be obtuse angle.For example, the first stopping surface 212 of the second stopping surface 222 and the first sub- back cushion 210 of the second sub- back cushion 220 It abuts, and the second angle leaned against between face 221 and the ride surface 110 of cushion 100 of the second sub- back cushion 220 is obtuse angle.For example, Referring to Fig. 1, the second sub- back cushion 220 also has the lateral surface 223 opposite with the first stopping surface 212 of the second sub- back cushion 220, the The second of two sub- back cushions 220, which leans against face 221 and lean against face 211 with the first of the first sub- back cushion 210, to abut, and the second sub- back cushion 220 Lateral surface 223 and cushion 100 ride surface 110 between angle at obtuse angle.In this way, the cushion 100 and back cushion 200 of the cushion that floats The cushion of formation, is very suitable to lying or leaning, increases its comfort level, and first when the first sub- back cushion 210 leans against face 211 and cushion It, can be by when 100 110 angle of ride surface makes greatly very much the first bearing height of the maintenance of back cushion 200 too small (as shown in Figure 1) The second of two sub- back cushions 220, which leans against face 221 and lean against face 211 with the first of the first sub- back cushion 210, to abut so that back cushion 200 maintains the Two bearing heights (as shown in Figure 2), the height for keeping people's body lying or leaning increase, and more meet the height need of people's face-to-face exchange It wants.For example, the first of the first sub- back cushion 210 the angle for leaning against between face 211 and the ride surface 110 of cushion 100 be 120 °~ 150°.Preferably, it is 135 ° that the first of the first sub- back cushion 210, which leans against the angle between face 211 and the ride surface 110 of cushion 100,. For example, the second stopping surface 222 of the second sub- back cushion 220 is abutted with the first stopping surface 212 of the first sub- back cushion 210, and the second son The second of back cushion 220 leans against the of the corner dimension between face 221 and the ride surface 110 of cushion 100 equal to the first sub- back cushion 210 One leans against the corner dimension between face 211 and the ride surface 110 of cushion 100.In this way, when the second block of the second sub- back cushion 220 When face 222 is abutted with the first stopping surface 212 of the first sub- back cushion 210, the second of the second sub- back cushion 220 leans against face 221 and first The first of sub- back cushion 210 leans against that face 211 is in the same plane, increases the comfort level for the cushion that floats.

In order to enable back cushion to the support effect at the back of human body more preferably, one embodiment is that first leans against face and first It is the first angle between stopping surface, second leans against between face and the second stopping surface as the second angle, the first angle and the second angle Complementation, in this way, when the first stopping surface is connected to second gear junction, first leans against face and the second angle for leaning against between face is 180 °, that is, first lean against face and second and lean against face and be in plane, in this way, make back cushion have one it is straight flat Back in face of human body is supported so that back cushion to the support effect at the back of human body more preferably.

In specific embodiment of the present utility model, for example, cushion 100 is cuboid, i.e. the longitudinal section of cushion 100 is Rectangle.For example, the first sub- back cushion 210 be by its first lean against face 211 and with the intersection of the first one side that lean against face 211 adjacent A part of tri-prismoid to form the bearing surface 213 of the first sub- back cushion 210 of removal.It is appreciated that the rib and seat of tri-prismoid If the first side of pad 100 abuts, be not sufficiently stable, and by the first of tri-prismoid shape the sub- back cushion 210 formed bearing surface 213 with Cushion 100 abuts, so that stability when the first sub- back cushion 210 is abutted with cushion 100 is more preferable, and state more preferably maintains.Example Such as, the second sub- back cushion 220 is also tri-prismoid.Second sub- back cushion is similar with the structure of the first sub- back cushion, in this way, the first son leans on When pad and the second sub- back cushion fold or be unfolded, the face abutted against can be very good to be overlapped.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (10)

1. The cushion 1. one kind is floatd characterized by comprising cushion and back cushion；

   The cushion includes the ride surface being disposed adjacent and supporting surface；

   The back cushion includes the first sub- back cushion and the second sub- back cushion, and the first sub- back cushion includes the abutting being successively disposed adjacent Face, first lean against face and the first stopping surface, and the link position that the bearing surface and described first lean against face is connected to the seating The link position in face and the supporting surface so that the first sub- back cushion and the cushion opposed rotatable are arranged, and described supports Junction is used for the activity when the relatively described cushion of the described first sub- back cushion turns to first position and is connected to the supporting surface, described First lean against face for when the relatively described cushion of the described first sub- back cushion turns to the second position activity be connected to the seating Face, the link position and second son that the first sub- back cushion is used to lean against face and first stopping surface by described first Back cushion rotation connection；

   The second sub- back cushion includes that second be disposed adjacent leans against face and the second stopping surface, and described second leans against face and described The link position of two stopping surfaces is connected to the described first link position for leaning against face Yu first stopping surface, so that described second Sub- back cushion is arranged with the described first sub- back cushion opposed rotatable, and second stopping surface is for opposite in the described second sub- back cushion Activity is connected to first stopping surface when first sub- back cushion turns to the third place, and described second leans against face in institute It states activity when the relatively described first sub- back cushion of the second sub- back cushion turns to four positions and is connected to described first and lean against face.
2. 2. the cushion according to claim 1 that floats, which is characterized in that described first, which leans against the shape in face and described second, leans against The shape in face matches, and when the second stopping surface activity is connected to first stopping surface, described first leans against face Face is leaned against with described second, and a plane is collectively formed.
3. 3. the cushion according to claim 2 that floats, which is characterized in that described first leans against face and described second to lean against face common The shape of the plane of formation and the shape of the ride surface match.
4. 4. the cushion according to claim 1 that floats, which is characterized in that the shape of first stopping surface and second block The shape in face matches.
5. 5. the cushion according to claim 1 that floats, which is characterized in that the shape of the shape of the bearing surface and the supporting surface Match.
6. 6. the cushion according to claim 1 that floats, which is characterized in that the bearing surface is abutted with the supporting surface, and described First angle for leaning against face and the ride surface is obtuse angle.
7. 7. the cushion according to claim 6 that floats, which is characterized in that described first leans against the folder between face and the ride surface Angle is 120 °~150 °.
8. 8. the cushion according to claim 7 that floats, which is characterized in that described first leans against the folder between face and the ride surface Angle is 135 °.
9. 9. the cushion according to claim 6 that floats, which is characterized in that second stopping surface is supported with first stopping surface It connects, and the described second angle leaned against between face and the ride surface is obtuse angle.
10. 10. the cushion according to claim 9 that floats, which is characterized in that described second leans against the angle in face Yu the ride surface Size is equal to the described first corner dimension for leaning against face Yu the ride surface.