CN111839915A - Wheelchair bed - Google Patents

Abstract

The invention discloses a wheelchair bed, which comprises: a main body portion; handrail adjusting device, handrail adjusting device locates on the main part, handrail adjusting device includes: the sleeve is arranged on the main body part, and a telescopic space is defined inside the sleeve; the telescopic arm is arranged in the telescopic space of the sleeve in a telescopic manner, and a plurality of positioning parts which are spaced from each other are arranged on the peripheral surface of the telescopic arm; the positioning piece is arranged on the sleeve in a penetrating mode and matched with the positioning part; the handrail assembly is arranged on the telescopic arm in a pivoting manner. According to the wheelchair bed provided by the embodiment of the invention, the armrest component can be accommodated at the rear side of the main body part of the wheelchair bed after being rotated, so that the wheelchair bed has better splicing integrity and is more attractive when being spliced with an external bed body.

Description

Wheelchair bed

Technical Field

The invention relates to the technical field of medical instruments, in particular to a wheelchair bed.

Background

In the related art, the wheelchair bed has two working states, namely a wheelchair state and a wheelchair and bed integrated state, but when the wheelchair is combined with the bed, the armrests will interfere with the bed body, that is to say, when the wheelchair bed is used as the bed state, the armrests can be used as a part of the bed surface, the mattress is separated in shape, the appearance is influenced, and the splicing integrity of the wheelchair bed and an external bed body is influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a wheelchair bed, in which the armrest assembly can be accommodated at the rear side of the main body of the wheelchair bed after being rotated, so that the wheelchair bed can be assembled with an external bed body with better integrity and better appearance.

According to an embodiment of the present invention, a wheelchair bed includes: a main body portion; handrail adjusting device, handrail adjusting device locates on the main part, handrail adjusting device includes: the sleeve is arranged on the main body part, and a telescopic space is defined inside the sleeve; the telescopic arm is arranged in the telescopic space of the sleeve in a telescopic manner, and a plurality of positioning parts which are spaced from each other are arranged on the peripheral surface of the telescopic arm; the positioning piece is arranged on the sleeve in a penetrating mode and matched with the positioning part; the handrail assembly is arranged on the telescopic arm in a pivoting manner.

According to the wheelchair bed provided by the embodiment of the invention, the armrest component can rotate through the rotary connection between the armrest component and the armrest adjusting device, so that the armrest component can rotate relative to the main body part, and further, the armrest component is connected with the telescopic arm which can move in the sleeve in the armrest adjusting device through the armrest component, so that the armrest component can be conveniently accommodated at the rear side of the main body part, and further, when the wheelchair bed is required to be spliced with an external bed body, the splicing and fitting degree of the wheelchair bed and the external bed body is effectively improved, the wheelchair bed is more attractive in whole, and meanwhile, the wheelchair bed is effectively prevented from being blocked by the armrest component when being spliced with the external bed body.

In addition, the wheelchair bed according to the present invention may have the following additional technical features:

in some embodiments of the present invention, the telescopic arm is provided at both ends of the sleeve, and a rotating connecting member is provided at an end of the telescopic arm away from the sleeve, and the armrest assembly is pivotally connected to the rotating connecting member.

In some embodiments of the invention, the armrest assembly comprises: the inner part of the shell defines an installation space, and a through hole is formed in the shell; the handrail main part, the handrail main part is located in the installation space, but and handrail main part with but rotate connecting piece pivotal connection, it passes through to rotate the connecting piece pass through the hole with handrail main part links to each other.

In some embodiments of the present invention, one end of the armrest body is provided with a rotation fitting member, the rotation fitting member is provided with a rotation fitting groove, and the rotation connecting member is pivotally connected to the rotation fitting groove.

In some embodiments of the invention, the rotationally engaged groove has disposed therein: the first limiting part is provided with a first side wall and a second side wall, and the second limiting part is provided with a third side wall and a fourth side wall; the first side wall and the third side wall are parallel to each other, and the second side wall and the fourth side wall are parallel to each other.

In some embodiments of the invention, the armrest assembly has a use position and a stowed position; the rotating connecting piece is provided with a first assembling surface and a second assembling surface, when the armrest component is positioned at the using position, the first assembling surface is abutted against the second side wall, and the second assembling surface is abutted against the fourth side wall; when the armrest component is located at the accommodating position, the first assembling surface abuts against the first side wall, and the second assembling surface abuts against the third side wall.

In some embodiments of the present invention, a connection hole is formed at an end of the rotary connection member, and the armrest adjustment device further includes a blocking piece, the blocking piece is engaged with the rotary engagement member, the blocking piece is provided with a fitting hole, and the fitting hole is connected to the connection hole of the rotary connection member through a fastening bolt.

In some embodiments of the invention, the telescopic arm comprises: the telescopic part is movably arranged in the telescopic space of the sleeve, and a limit groove is formed in the telescopic part; the positioning part is arranged on the circumferential surface of the assembling part, and the rotating connecting piece is arranged at the end part of the assembling part.

In some embodiments of the present invention, the armrest adjustment device further comprises: the limiting piece can be arranged on the sleeve in a penetrating way and matched with the limiting groove; the locating piece is arranged on the peripheral wall of the sleeve, and the limiting piece is movably arranged in the fixing piece; the elastic driving piece is arranged between the limiting piece and the fixing piece and used for driving the limiting piece to move towards the limiting groove.

In some embodiments of the invention, the body portion comprises: the armrest adjusting device is arranged on the backrest part; a support portion pivotally connected to a lower edge of the backrest portion.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a perspective view of an armrest assembly for a wheelchair bed according to an embodiment of the present invention in a use position;

FIG. 2 is a side view of an armrest assembly of a wheelchair bed in a use position in accordance with an embodiment of the present invention;

FIG. 3 is a schematic perspective view of an armrest assembly of a wheelchair bed in a stowed position in accordance with an embodiment of the present invention;

FIG. 4 is a side view of an armrest assembly of a wheelchair bed in a stowed position in accordance with an embodiment of the present invention;

FIG. 5 is a schematic perspective view of an alternative angle of the armrest assembly of the wheelchair bed according to an embodiment of the present invention in the stowed position;

fig. 6 is an exploded view of the structure of an armrest assembly for a wheelchair bed according to an embodiment of the present invention;

FIG. 7 is an enlarged view of the structure of FIG. 6 at A;

FIG. 8 is a schematic structural view of an armrest assembly, a backrest portion, and an armrest adjustment mechanism of a wheelchair bed according to an embodiment of the present invention;

fig. 9 is a sectional view of an armrest adjustment mechanism for a wheelchair bed according to an embodiment of the present invention.

Reference numerals:

a wheelchair bed 1000;

a main body portion 100; a backrest part 10; a support portion 20;

an armrest adjusting device 200; a sleeve 1; a telescopic space 11; a telescopic arm 2; a telescopic part 21; a stopper groove 211; the fitting portion 22; a positioning portion 221; a rotational connection 222; the first fitting surface 2221; a second fitting surface 2222; a connection hole 2223; a positioning member 3; a baffle 4; a fitting hole 41; a fastening bolt 5; a fixing member 6; a stopper 61;

an armrest assembly 300; a housing 7; through the aperture 71; a handrail main body 8; a rotation fitting 9; a rotation fitting groove 91; a first stopper portion 911; the first side wall 9111; a second sidewall 9112; a second stopper 912; the third side wall 9121; a fourth side wall 9122.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A wheelchair bed 1000 in accordance with an embodiment of the present invention is described below with reference to fig. 1-9.

A wheelchair bed 1000 according to an embodiment of the present invention includes: the armrest comprises a main body part 100, an armrest adjusting device 200 and an armrest assembly 300, wherein the armrest adjusting device 200 is arranged on the main body part 100, and the position of the armrest assembly 300 relative to the main body part 100 can be adjusted through the armrest adjusting device 200.

As shown in fig. 5 to 9, the armrest adjusting device 200 includes: the telescopic arm comprises a sleeve 1, a telescopic arm 2 and a positioning piece 3, wherein the sleeve 1 is arranged on a main body part 100, and a telescopic space 11 is defined inside the sleeve 1. The telescopic arm 2 is telescopically arranged in the telescopic space 11 of the sleeve 1. That is, the casing 1 is a tubular structure, and the inside of the casing 1 is a hollow state, that is, the telescopic space 11, so that one end of the telescopic arm 2 can be inserted into the inside of the casing 1 and move inside the casing 1, and the telescopic arm 2 and the casing 1 are matched to form a telescopic structure.

Further, as shown in fig. 6 to 9, a plurality of positioning portions 221 are provided on the circumferential surface of the telescopic arm 2 at intervals, and the positioning member 3 is inserted into the sleeve 1 and engaged with the positioning portions 221.

Specifically, a plurality of positioning portions 221 are provided on the circumferential surface of the telescopic arm 2, and the positioning portions 221 may be grooves having a certain length and are provided at intervals on the circumferential surface of the telescopic arm 2. The positioning members 3 may include a plurality of positioning members 3, the positioning members 3 are disposed on the casing 1 and penetrate through the casing 1, so that the positioning members 3 may penetrate through the wall surface of the casing 1 and extend into the telescopic space 11 inside the casing 1, and the positions of the positioning members 3 penetrating through the casing 1 correspond to the positions of the positioning portions 221 on the telescopic arms 2 inside the casing 1.

In other words, the circumference of the telescopic arm 2 is provided with a plurality of positioning parts 221, the casing 1 is provided with a plurality of positioning parts 3, the positioning parts 3 are matched with the positioning parts 221, and the positioning parts 3 are matched with the long groove type positioning parts 221, so that the telescopic arm 2 can be telescopic in the casing 1 without rotating, and the movement amplitude of the telescopic arm 2 in the casing 1 can be limited. The rotation of the telescopic arm 2 is thereby restricted to a certain extent by the engagement of the retainer 3 and the positioning portion 221.

That is, as shown in fig. 9, the telescopic arm 2 is provided with a plurality of positioning portions 221, and the telescopic arm 2 can move in the telescopic space 11 inside the socket 1. The positioning part 221 of the telescopic arm 2 may be a long groove, and a part of the positioning part 221 is located inside the telescopic space 11. The sleeve 1 is provided with a plurality of positioning pieces 3, and one end of each positioning piece 3 penetrates through the wall surface of the sleeve 1 and extends into the sleeve 1. When the telescopic arm 2 does not rotate in the casing 1, the positioning portion 221 of the telescopic arm 2 is fixed relative to the casing 1, so that the positions of the positioning members 3 on the casing 1 and the positions of the positioning portions 221 on the telescopic arm 2 need to be in one-to-one correspondence, and therefore when the positioning members 3 penetrate through the wall surface of the casing 1, the positioning members 3 can be matched with the positioning portions 221, as shown in fig. 9, so that the telescopic arm 2 is effectively prevented from rotating relatively inside the casing 1, and the movement amplitude of the telescopic arm 2 inside the casing 1 is effectively limited.

As shown in fig. 1 to 9, the armrest assembly 300 is pivotably provided on the telescopic arm 2. Therefore, the rotation of the armrest assembly 300 relative to the main body 100 can be realized by the cooperation of the armrest adjustment device 200 and the armrest assembly 300, and the armrest assembly 300 can be accommodated in the rear side of the main body 100 by engaging the armrest assembly 300 with the armrest adjustment device 200 after the armrest assembly 300 is rotated. Thereby, the wheelchair bed 1000 can be better attached to the external bed body when being changed into a bed, and the wheelchair bed 1000 and the external bed body can not have a gap in the middle when being matched because of the obstruction of the armrest component 300.

According to the wheelchair bed 1000 provided by the embodiment of the invention, the armrest assembly 300 can rotate through the rotational connection between the armrest assembly 300 and the armrest adjusting device 200, so that the armrest assembly 300 can rotate relative to the main body portion 100, and further, the armrest assembly 300 is connected with the telescopic arm 2 which can move inside the sleeve 1 in the armrest adjusting device 200, so that the armrest assembly 300 can be conveniently accommodated at the rear side of the main body portion 100, and further, when the wheelchair bed 1000 becomes a bed and needs to be spliced with an external bed body, the splicing and fitting degree of the wheelchair bed 1000 and the external bed body is effectively improved, the whole wheelchair bed 1000 is more attractive, and meanwhile, the wheelchair bed 1000 and the external bed body are effectively prevented from being blocked by the armrest assembly 300 when being spliced.

As shown in fig. 5-9, the casing 1 has a tubular structure, the inside of the casing 1 is a hollow state, i.e. a telescopic space 11, two ends of the casing 1 can be respectively provided with a telescopic arm 2, and the two telescopic arms 2 can perform telescopic motion inside the casing 1, that is, the two telescopic arms 2 are respectively arranged at two ends of the casing 1, and the two telescopic arms 2 can perform reciprocating motion inside the casing 1, thereby achieving the telescopic function. Further, the armrest assembly 300 connected to the telescopic arm 2 can be accommodated in the rear side of the main body 100 by the contraction of the telescopic arm 2, thereby preventing the armrest assembly 300 from being blocked when the wheelchair bed 1000 is assembled with an external bed.

Further, as shown in fig. 6 and 7, the telescopic arm 2 is provided with a rotary connector 222 at an end thereof away from the casing 1, and the handle assembly 300 is pivotally connected to the rotary connector 222. The rotating connector 222 can be inserted into the handle assembly 300, so that the handle assembly 300 can rotate around the rotating connector 222, thereby rotating the handle assembly 300.

Further, the handle assembly 300 includes: a housing 7 and an armrest body 8, the interior of the housing 7 defining an installation space, the housing 7 being provided with a through hole 71. The armrest body 8 is disposed in the installation space, the armrest body 8 is pivotally connected to the rotary connector 222, and the rotary connector 222 is connected to the armrest body 8 through the through hole 71.

Specifically, as shown in fig. 6 and 7, the housing 7 of the armrest assembly 300 is a rectangular parallelepiped housing, the interior of the housing 7 is hollow, that is, has a certain installation space, and one rectangular side surface of the housing 7 is open, for example, in the vertical direction shown in fig. 6, the lower surface of the housing 7 is open. The armrest body 8 can be fitted into the installation space inside the housing 7, that is, the housing 7 can be covered outside the armrest body 8 through the open opening, so that the armrest body 8 can be protected and the armrest body 8 can be prevented from being exposed to the outside and being worn.

In addition, the housing 7 and the armrest body 8 may be made of different materials to adapt to different use environments, and the armrest body 8 may be made of a material with a certain rigidity to ensure that the armrest assembly 300 has stable support force when in use. The housing 7 may be made of a material having a certain elasticity, so that the housing 7 can provide a more comfortable supporting force for the arm of the user when in use.

Simultaneously, casing 7 chooses different materials with handrail main part 8 for use, promptly through the material of reasonable casing 7 of choosing and handrail main part 8, can also effectual reduction cost of manufacture.

In the wheelchair bed 1000 according to the embodiment of the invention, the two opposite sides of the housing 7 may be opened with the through holes 71, wherein the two sides where the through holes 71 are located may be left and right sides of the housing 7, for example, left and right sides of the housing 7 shown in fig. 6. Furthermore, the through hole 71 may be a circular hole, so that the rotary connector 222 of the telescopic arm 2 can pass through the through hole 71 on the housing 7 to be rotatably connected with the armrest body 8, thereby realizing the rotation of the armrest body 8.

In other words, handrail body 8 rotates with the rotation connecting piece 222 of telescopic boom 2 and is connected the back, can realize handrail body 8's rotation, and handrail body 8's outside cover is equipped with casing 7 to be equipped with on casing 7 and pass hole 71, handrail body 8's rotation connecting piece 222 passes and pass hole 71 after, rotates with handrail body 8 and is connected, and handrail body 8 can drive casing 7 synchronous rotation when rotating from this, thereby has realized handrail assembly 300's whole rotation.

Further, as shown in fig. 6 and 7, a rotation fitting member 9 is provided at one end of the armrest body 8, a rotation fitting groove 91 is formed in the rotation fitting member 9, and the rotation connecting member 222 is pivotally connected to the rotation fitting groove 91. Specifically, one end of the armrest body 8 is provided with a rotating fitting 9, and when the armrest body 8 is fitted inside the housing 7, the position of the rotating fitting 9 of the armrest body 8 corresponds to the position of the through hole 71 in the housing 7.

Further, as shown in fig. 6 and 7, the rotation fitting groove 91 provided in the rotation fitting member 9 corresponds to the position of passing through the hole 71, and thus, when the rotation fitting member 9 is placed inside the housing 7, the rotation fitting groove 91 communicates with the passing holes 71 in the two side walls of the housing 7 in sequence, so that the rotation fitting member 9 can pass through one of the passing holes 71 of the housing 7, then pass through the rotation fitting groove 91, and finally pass through the passing hole 71, thereby realizing the rotation connection between the rotation connecting member 222 and the rotation fitting member 9, and when the armrest body 8 rotates, the housing 7 can be driven to rotate synchronously.

As shown in fig. 7, the rotation fitting groove 91 is provided with: the first stopper portion 911 has a first side wall 9111 and a second side wall 9112, and the second stopper portion 912 has a third side wall 9121 and a fourth side wall 9122. The first side wall 9111 is parallel to the third side wall 9121, and the second side wall 9112 is parallel to the fourth side wall 9122.

Specifically, a first stopper 911 and a second stopper 912 are provided on the inner wall of the fitting groove. The first position-limiting portion 911 is a protruding structure, and the first position-limiting portion 911 has two side surfaces, namely a first side wall 9111 and a second side wall 9112, and a certain included angle is formed between the first side wall 9111 and the second side wall 9112; correspondingly, the second position-limiting portion 912 has a protruding structure, and the second position-limiting portion 912 has two side surfaces, i.e., a third side wall 9121 and a fourth side wall 9122, and a certain included angle is formed between the third side wall 9121 and the fourth side wall 9122.

Further, the first side wall 9111 is parallel to the third side wall 9121, and the second side wall 9112 is parallel to the fourth side wall 9122. After the rotating connector 222 passes through the rotating connector 9, the rotating connector 222 allows the rotating connector 9 to rotate around the rotating connector 222, thereby rotating the armrest main body 8. Through the spacing portion 911 of first and the spacing portion 912 of second, can effectual restriction running fitting 9 round the pivoted angle of rotating the connecting piece 222, and then control the rotation range of handrail main part 8, guaranteed handrail main part 8's turned angle's regulation accuracy.

Further, as shown in fig. 1-5, the armrest assembly 300 has a use position and a stowed position. Such as shown in fig. 1-2, which are schematic views of the use position of the armrest assembly 300. That is, the use position of the armrest, i.e., the position in which the armrest assembly 300 is adjusted after being rotated to facilitate the use of the user for supporting the body. Correspondingly, as shown in fig. 3 to fig. 5, the storage position of the armrest assembly 300 is shown schematically, that is, the storage position of the armrest assembly 300 is a position behind the main body 100 after the armrest assembly 300 rotates at the use position, and then the telescopic arm 2 contracts, so that the armrest assembly 300 can be stored, which is convenient for the wheelchair bed 1000 to be spliced with an external bed after being changed into a bed.

Further, as shown in fig. 7, the rotating connecting member 222 has a first mounting surface 2221 and a second mounting surface 2222, and when the armrest assembly 300 is located at the use position, the first mounting surface 2221 abuts against the second side wall 9112, and the second mounting surface 2222 abuts against the fourth side wall 9122. When the armrest assembly 300 is located at the storage position, the first mounting surface 2221 abuts against the first sidewall 9111, and the second mounting surface 2222 abuts against the third sidewall 9121.

Specifically, as shown in fig. 7, the rotating connector 222 is a flat structure and has a first mounting surface 2221 and a second mounting surface 2222, when the armrest assembly 300 is located at the use position, as shown in fig. 1, 2, and 6-8, the rotating connector 222 is inserted into the rotating mating groove 91 of the rotating mating part 9, the first mounting surface 2221 of the rotating connector 222 abuts against the second side wall 9112 of the first positioning portion 911, and the second mounting surface 2222 of the rotating connector 222 abuts against the fourth side wall 9122 of the second positioning portion 912, so that the rotating connector 222 can abut against the rotating mating part 9 of the armrest assembly 300, thereby ensuring the stability of the armrest assembly 300 at the use position and preventing the armrest assembly 300 from further rotating downward at the use position.

When the armrest assembly 300 needs to be adjusted to the storage position, that is, the position shown in fig. 3-5, the armrest assembly 300 can be rotated from the use position to a position close to the armrest adjustment device 200, that is, the rotating fitting piece 9 rotates around the rotating connecting piece 222, so that the first assembling surface 2221 of the rotating connecting piece 222 abuts against the first side wall 9111 of the first position-limiting portion 911, and the second assembling surface 2222 of the rotating connecting piece 222 abuts against the third side wall 9121 of the second position-limiting portion 912, thereby limiting the rotating angle between the rotating fitting piece 9 and the rotating connecting piece 222, and rapidly adjusting the armrest assembly 300 to the angle that needs to be stored, so as to facilitate rapid storage of the armrest assembly 300 subsequently.

As shown in fig. 7, the end of the rotating connecting member 222 is provided with a connecting hole 2223, the armrest adjusting device 200 further includes a blocking piece 4, the blocking piece 4 is engaged with the rotating fitting member 9, the blocking piece 4 is provided with a fitting hole 41, and the fitting hole 41 is connected with the connecting hole 2223 of the rotating connecting member 222 through a fastening bolt 5.

Specifically, the end face of the end portion of the rotating connecting piece 222 is provided with a connecting hole 2223, the armrest adjusting device 200 further comprises a baffle plate 4, the baffle plate 4 is provided with a matching hole 41, after the rotating connecting piece 222 passes through the rotating matching groove 91 of the rotating matching piece 9, the rotating connecting piece is finally penetrated out through the hole 71 of the shell 7, the matching hole 41 of the baffle plate 4 can correspond to the connecting hole 2223 of the rotating connecting piece 222, the rotating connecting piece 222 is connected with the baffle plate 4 through the fastening bolt 5, and the structure inside the rotating matching groove 91 and the rotating connecting piece 222 can be shielded through the baffle plate 4, so that the structure of the armrest assembly 300 and the armrest adjusting device 200 after being integrally connected is more compact. The internal structure can also be protected by the flap 4.

As shown in fig. 9, the telescopic arm 2 includes: a telescoping section 21 and a mounting section 22. The telescopic part 21 is movably arranged in the telescopic space 11 of the casing 1, the telescopic part 21 is provided with a limit groove 211, the positioning part 221 is arranged on the circumferential surface of the assembling part 22, and the rotating connecting piece 222 is arranged at the end part of the assembling part 22.

Specifically, the telescopic portion 21 of the telescopic arm 2 is located inside the casing 1, and a limit groove 211 is formed in the telescopic portion 21. The circumferential surface of the assembling portion 22 is provided with a positioning portion 221, and the positioning portion 221 is a long groove, so that the positioning member 3 can extend into the positioning portion 221 after penetrating through the wall surface of the casing 1, so that the moving position of the telescopic arm 2 in the casing 1 is limited, the telescopic arm 2 is prevented from slipping after extending out of the casing 1, and the telescopic arm 2 is also prevented from slipping into the casing 1 when contracting. And the telescopic arm 2 can be effectively prevented from rotating inside the casing 1 by the positioning member 3.

The end of the telescopic portion 21 is provided with a rotary connector 222, so that the telescopic arm 2 is stable in position, that is, the telescopic arm does not rotate inside the casing 1, the angle of the rotary connector 222 is stable, and the handrail assembly 300 can rotate.

Further, as shown in fig. 9, the armrest adjusting device 200 further includes: the limiting member 61, the fixing member 6 and the elastic driving member are not shown in the drawings. The limiting member 61 can be disposed through the sleeve 1 and is matched with the limiting groove 211, the fixing member 6 is disposed on the circumferential wall of the sleeve 1, the limiting member 61 is movably disposed in the positioning member 3, and the elastic driving member is disposed between the limiting member 61 and the fixing member 6 and is used for driving the limiting member 61 to move toward the limiting groove 211.

In other words, the fixing member 6 is provided on the circumferential wall of the casing 1, the fixing member 6 is provided with the limiting member 61 that can pass through the fixing member 6 and the wall surface of the casing 1, and the limiting member 61 can pass through the wall surface of the casing 1 and can be inserted into the limiting groove 211 of the telescopic portion 21, thereby limiting the position of the telescopic portion 21 and preventing the telescopic arm 2 from moving inside the casing 1. In addition, be connected through the elastic drive piece between mounting 6 and locating part 61, under the effect of elastic drive piece, locating part 61 can be stable be in mounting 6 inside to locating part 61 can be stable peg graft with spacing groove 211, when needs telescopic boom 2 is inside the sleeve pipe 1, can pull locating part 61 to the direction of keeping away from mounting 6, makes locating part 61 break away from spacing groove 211, thereby relieves the spacing of locating part 61 to spacing groove 211, makes telescopic boom 2 can move inside sleeve pipe 1.

Optionally, the elastic driving member may be a spring, and two ends of the spring are respectively connected to the limiting member 61 and the fixing member 6, so that when the spring is located at a normal length, the limiting member 61 is located in the fixing member 6, and the limiting member 61 has a tendency to move toward the limiting groove 211, that is, after the limiting member 61 corresponds to the limiting groove 211, the limiting member 61 may be stably inserted into the limiting groove 211.

In the wheelchair bed 1000 according to the embodiment of the present invention, the main body 100 includes: the armrest adjusting device comprises a backrest 10 and a support 20, wherein the armrest adjusting device 200 is arranged on the backrest 10, and the support 20 is pivotally connected with the lower edge of the backrest 10.

Specifically, as shown in fig. 1 to 8, the main body 100 is divided into a backrest portion 10 and a support portion 20. When the wheelchair bed 1000 is converted into a wheelchair, the backrest portion 10 can support the back of the user, and the support portion 20 can support the user as a seat. The wheelchair bed 1000 can be changed into a bed body through rotation by the rotation of the lower edge of the backrest 10, that is, the lower edge of the backrest 10 shown in fig. 6, being rotatably connected with the column support 20 through the backrest 10, and the armrest assembly 300 and the armrest adjusting device 200 can accommodate the armrest on the rear side of the backrest 10, that is, the back side of the backrest 10, so that the wheelchair bed 1000 can be better spliced with an external bed body when being changed into a bed body.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A wheelchair bed comprising:

a main body portion;

handrail adjusting device, handrail adjusting device locates on the main part, handrail adjusting device includes:

the sleeve is arranged on the main body part, and a telescopic space is defined inside the sleeve;

the telescopic arm is arranged in the telescopic space of the sleeve in a telescopic manner, and a plurality of positioning parts which are spaced from each other are arranged on the peripheral surface of the telescopic arm;

the positioning piece is arranged on the sleeve in a penetrating mode and matched with the positioning part;

the handrail assembly is arranged on the telescopic arm in a pivoting manner.

2. A wheelchair bed as claimed in claim 1, wherein the telescopic arm is provided at both ends of the sleeve, and a pivotal connection is provided at an end of the telescopic arm remote from the sleeve, the armrest assembly being pivotally connected to the pivotal connection.

3. A wheelchair bed as claimed in claim 2, wherein the armrest assembly comprises:

the inner part of the shell defines an installation space, and a through hole is formed in the shell;

the handrail main part, the handrail main part is located in the installation space, but and handrail main part with but rotate connecting piece pivotal connection, it passes through to rotate the connecting piece pass through the hole with handrail main part links to each other.

4. A wheelchair bed as claimed in claim 3, wherein the armrest body is provided at one end with a rotation engagement member having a rotation engagement groove formed therein, the rotation connection member being pivotally connected to the rotation engagement groove.

5. A wheelchair bed as claimed in claim 4, wherein the rotary engagement slot is provided with: the first limiting part is provided with a first side wall and a second side wall, and the second limiting part is provided with a third side wall and a fourth side wall;

the first side wall and the third side wall are parallel to each other, and the second side wall and the fourth side wall are parallel to each other.

6. A wheelchair bed as claimed in claim 5, wherein the armrest assembly has a use position and a stowed position;

the rotating connecting piece is provided with a first assembling surface and a second assembling surface, when the armrest component is positioned at the using position, the first assembling surface is abutted against the second side wall, and the second assembling surface is abutted against the fourth side wall;

when the armrest component is located at the accommodating position, the first assembling surface abuts against the first side wall, and the second assembling surface abuts against the third side wall.

7. The wheelchair bed as claimed in claim 2, wherein the end of the rotary connecting member is provided with a connecting hole, the armrest adjusting means further comprises a blocking piece, the blocking piece is engaged with the rotary engaging member, the blocking piece is provided with a mating hole, and the mating hole is connected with the connecting hole of the rotary connecting member by a fastening bolt.

8. A wheelchair bed as claimed in claim 2, wherein the telescopic arm comprises:

the telescopic part is movably arranged in the telescopic space of the sleeve, and a limit groove is formed in the telescopic part;

the positioning part is arranged on the circumferential surface of the assembling part, and the rotating connecting piece is arranged at the end part of the assembling part.

9. A wheelchair bed as claimed in claim 8, wherein the armrest adjustment means further comprises:

the limiting piece can be arranged on the sleeve in a penetrating way and matched with the limiting groove;

the fixing piece is arranged on the peripheral wall of the sleeve, and the limiting piece is movably arranged in the fixing piece;

the elastic driving piece is arranged between the limiting piece and the fixing piece and used for driving the limiting piece to move towards the limiting groove.

10. A wheelchair bed as claimed in claim 1, wherein the main body portion comprises:

the armrest adjusting device is arranged on the backrest part;

a support portion pivotally connected to a lower edge of the backrest portion.

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