CN215739970U

CN215739970U - Wheelchair bed

Info

Publication number: CN215739970U
Application number: CN202023343476.5U
Authority: CN
Inventors: 刘进; 龙观富; 陈宇; 于万胜; 冯亚磊
Original assignee: Guangdong Bofang Zhongji Medical Technology Co ltd
Current assignee: Guangdong Bofang Zhongji Medical Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-02-08
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a wheelchair bed, comprising: a support frame; the seat plate is connected to the support frame; the leg plate is rotatably connected to one side of the seat plate; the foot plate is rotatably connected to one side of the leg plate, which is far away from the seat plate; the back plate is rotatably connected to one side of the seat plate, which is far away from the leg plate; the connecting rod assembly is respectively connected with the leg plate, the foot plate and the back plate, and is configured to adjust the angle of the leg plate and the back plate relative to the seat plate and the angle of the foot plate relative to the leg plate during movement; the transmission mechanism is provided with a power input part and comprises a worm wheel and a worm which are meshed with each other, the worm is connected with the power input part, and the worm wheel is connected with the connecting rod assembly so as to drive the connecting rod assembly to move when rotating. Simple operation, simple integral structure, stable use and low noise in the state adjustment process.

Description

Wheelchair bed

Technical Field

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

Background

In the related art, a common wheelchair bed is mostly driven by a motor in the process of adjusting the posture of the wheelchair, and the manually driven wheelchair bed is mostly driven by a trapezoidal screw rod and a bevel gear to realize the transmission of power. The existing wheelchair bed needs multi-step operation for posture adjustment, and is relatively complex and poor in user experience. And the existing matching mode of the screw rod and the bevel gear has large use noise.

SUMMERY OF THE UTILITY MODEL

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, which is simple and convenient to operate, has a simple overall structure, is stable to use, and has low noise during a state adjustment process.

According to an embodiment of the present invention, a wheelchair bed includes: a support frame; the seat plate is connected to the supporting frame; the leg plate is rotatably connected to one side of the seat plate; the foot plate is rotatably connected to one side of the leg plate, which is far away from the seat plate; the back plate is rotatably connected to one side of the seat plate, which is far away from the leg plate; the connecting rod assemblies are respectively connected with the leg plate, the foot plate and the back plate, and are configured to adjust the angles of the leg plate and the back plate relative to the seat plate and the angle of the foot plate relative to the leg plate during movement; the transmission mechanism is provided with a power input part and comprises a worm wheel and a worm which are meshed with each other, the worm is connected with the power input part, and the worm wheel is connected with the connecting rod assembly so as to drive the connecting rod assembly to move when rotating.

According to the wheelchair bed provided by the embodiment of the utility model, the back plate, the leg plates and the foot plates can be subjected to angle adjustment according to the requirements of a user, so that the use comfort of the user is improved. Drive link assembly through drive mechanism, and then adjust the angle of wheelchair bed through link assembly, the simple operation, drive mechanism adopts worm gear's cooperation mode, and the angle modulation is accurate. And the worm gear and worm have simple structure in a matching mode and low noise in the rotating process.

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 transmission mechanism further comprises a first bevel gear and a second bevel gear which are engaged, the first bevel gear is connected with the power input part, and the second bevel gear is connected with the worm. The transmission may be achieved by engagement of a first bevel gear with a second bevel gear.

In some embodiments of the utility model, the power input is a crank or a wheel. It may be convenient to power the linkage assembly.

In some embodiments of the utility model, the connecting rod assembly comprises: the central rotating piece is rotatably arranged on the supporting frame and is connected with the worm wheel; one end of the back connecting rod is fixedly connected to the central rotating piece, and the other end of the back connecting rod is movably arranged on the back plate. Can transmit power and is convenient for the integral operation of the wheelchair bed.

In some embodiments of the present invention, the back surface of the back plate is provided with a guide groove, and the end of the back link is provided with a guide wheel, which is fitted in the guide groove. The back connecting rod is prevented from slipping off from the guide groove on the back plate when the back plate is matched with the back connecting rod.

In some embodiments of the utility model, the connecting rod assembly further comprises: the leg connecting rod is positioned on the back of the leg plate, one end of the leg connecting rod is rotatably connected to the seat plate, and the other end of the leg connecting rod is rotatably connected to the foot plate; and one end of the hip connecting rod is rotatably connected to the central rotating part, and the other end of the hip connecting rod is rotatably connected to the leg connecting rod. The state adjustment of the wheelchair bed is conveniently and quickly realized.

In some embodiments of the utility model, the central rotating member is formed in a cam shape, and the protrusion of the central rotating member is connected to the hip link. It may be convenient to power the leg links.

In some embodiments of the present invention, a buffer is further connected between the back link and the support frame. The rotating speed of the back plate is prevented from being too high, and potential safety hazards are prevented.

In some embodiments of the utility model, the transmission mechanism further comprises: and one end of the output shaft is connected with the worm wheel, and one end of the output shaft is connected with the central rotating part. Can ensure the stable matching of the worm wheel and the central transmission part.

In some embodiments of the present invention, the central rotating member is sleeved on the output shaft, and a matching key is arranged between the central rotating member and the output shaft. Can ensure the stable matching of the worm wheel and the central transmission part.

Additional aspects and advantages of the utility model 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 utility model.

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 schematically illustrating a wheelchair state of a wheelchair bed according to an embodiment of the present invention;

fig. 2 is a perspective view schematically illustrating a bed state of the wheelchair bed according to the embodiment of the present invention;

fig. 3 is a side view of a wheelchair state of the wheelchair bed according to the embodiment of the present invention;

fig. 4 is a side view of a bed state of the wheelchair bed according to the embodiment of the present invention;

FIG. 5 is a rear view of a wheelchair bed according to an embodiment of the utility model;

FIG. 6 is a top view of a wheelchair bed according to an embodiment of the utility model;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;

fig. 8 is a schematic view of the internal structure of the wheelchair bed according to the embodiment of the present invention;

fig. 9 is a partial enlarged view of fig. 8 at B.

Reference numerals:

a wheelchair bed 100;

a support frame 1; a seat plate 2; a leg plate 3; a foot plate 4;

a back plate 5; a guide groove 51;

a connecting rod assembly 6; a central rotating member 61; a back link 62; a guide pulley 621; a leg link 63; a hip link 64;

a transmission mechanism 7; a worm wheel 71; a worm 72; a first bevel gear 73; a second bevel gear 74; an output shaft 75;

a power input portion 8; a buffer member 9;

a front wheel 10; a rear wheel 20; an armrest 30.

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 utility model 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 utility model. 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 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 9.

A wheelchair bed 100 according to an embodiment of the present invention includes: the seat comprises a support frame 1, a seat plate 2, a leg plate 3, a foot plate 4, a back plate 5, a connecting rod assembly 6 and a transmission mechanism 7. As shown in FIG. 1, the supporting frame 1 can support other structures to ensure the stable operation of the other structures.

As shown in fig. 1-6, the sitting plate 2 is connected to the supporting frame 1 to provide a foundation support for the user's body. As shown in fig. 1 to 4, the leg plate 3 is rotatably coupled to one side of the seat plate 2, so that the leg of the user can be stably supported, and can be effectively attached to the leg of the user for a long time by being rotatably coupled to the seat plate 2. The foot plate 4 is pivotally connected to the side of the leg plate 3 remote from the seat plate 2, thereby providing support for the user's steps. The back plate 5 is rotatably connected to one side of the seat plate 2, which is far away from the leg plate 3, so that the whole wheelchair bed 100 is formed by sequentially rotatably connecting the back plate 5, the seat plate 2, the leg plate 3 and the foot plate 4, and the seat plate 2 is connected with the support frame 1, thereby enabling the wheelchair bed 100 to realize a support function.

As shown in fig. 3, the link assembly 6 is connected to the leg plate 3, the foot plate 4, and the back plate 5, respectively, and the link assembly 6 is configured to adjust the angle of the leg plate 3 and the back plate 5 with respect to the seat plate 2 and the angle of the foot plate 4 with respect to the leg plate 3 when moving.

Can know by the preamble, rotate between backplate 5 and the seat 2 and be connected, rotate between leg board 3 and the seat 2 and be connected, and seat 2 is connected with support frame 1, can realize from this that backplate 5 and leg board 3 do for the rotation of seat 2 through link assembly 6 to adjust backplate 5 and leg board 3 and support the user, and guarantee to support stably, the security is high, and turned angle can adjust, thereby can make the user adjust as required.

The connecting rod assembly 6 can adjust the rotating angle of the foot plate 4 relative to the leg plate 3, so that the whole angle of the wheelchair bed 100 can be adjusted according to the requirement of a user, and the requirement of the user is met.

As shown in fig. 8 and 9, the transmission mechanism 7 has a power input portion 8, the transmission mechanism 7 includes a worm wheel 71 and a worm 72 which are meshed with each other, the worm 72 is connected with the power input portion 8, and the worm wheel 71 is connected with the connecting rod assembly 6 so as to drive the connecting rod assembly 6 to move when rotating.

Therefore, the transmission mechanism 7 can provide power for the rotation of the connecting rod assembly 6 of the wheelchair bed 100, and further, the angle adjustment of the back plate 5 and the leg plate 3 relative to the seat plate 2 and the angle adjustment of the foot plate 4 relative to the leg plate 3 can be realized.

Specifically, as shown in fig. 8 and 9, the back plate 5, the leg plate 3, and the foot plate 4 are all connected to the transmission mechanism 7 through the connecting rod assembly 6, so that the wheelchair bed 100 can be angularly adjusted through the power input portion 8. Wherein, the power input part 8 transmits power to the transmission mechanism 7 consisting of the worm wheel 71 and the worm 72, which can facilitate the angle adjustment of the wheelchair bed 100 and improve the precision of the angle adjustment.

According to the wheelchair bed 100 of the embodiment of the utility model, the back plate 5, the leg plate 3 and the foot plate 4 can be angularly adjusted according to the needs of a user, so that the use comfort of the user is improved. Drive link assembly 6 through drive mechanism, and then adjust the angle of wheelchair bed 100 through link assembly 6, the simple operation, drive mechanism 7 adopts worm wheel 71 worm 72's cooperation mode, and the angle modulation is accurate. And the worm wheel 71 and the worm 72 are simple in matching mode and structure, and the noise is low in the rotating process.

Further, as shown in fig. 9, the transmission mechanism 7 further includes a first bevel gear 73 and a second bevel gear 74 which are engaged with each other, the first bevel gear 73 is connected to the power input portion 8, and the second bevel gear 74 is connected to the worm 72.

Specifically, the first bevel gear 73 and the second bevel gear 74 are engaged with each other, so that power transmission can be achieved, and power in a first direction can be converted into power in a second direction through the engagement between the first bevel gear 73 and the second bevel gear 74, wherein the first direction and the second direction are two directions in which the rotation axis is perpendicular. For example, the first direction may be a front-rear direction of the wheelchair bed 100, and the second direction may be a left-right direction of the wheelchair bed 100, and it is understood that the front-rear direction and the left-right direction of the wheelchair bed 100 are perpendicular directions.

Therefore, the power of the power input part 8 is transmitted through the first bevel gear 73, the power is transmitted to the worm 72 through the second bevel gear 74, the angle of the wheelchair bed 100 can be adjusted through the connecting rod assembly 6, the transmission is stable through the transmission mode of the first bevel gear 73 and the second bevel gear 74, and the stability and the safety of the angle adjustment of the wheelchair bed 100 are guaranteed.

Wherein the power input part 8 is a crank or a rotating wheel. That is, the first bevel gear 73 is rotated by using the crank or the wheel as the power input part 8, so that the angle adjustment of the wheelchair bed 100 can be conveniently and quickly performed.

Alternatively, the rotation mode of the power input portion 8 may be a manual mode, that is, the angle change of the wheelchair bed 100 can be adjusted more accurately by hand. The power input part 8 can also use an electric mode, can quickly adjust the angle, and is time-saving and labor-saving.

As shown in fig. 8 and 9, the link assembly 6 includes: a central rotating piece 61 and a back connecting rod 62, wherein the central rotating piece 61 is rotatably arranged on the supporting frame 1, namely, the central rotating piece 61 can rotate on the supporting piece. The central rotating member is connected to the worm wheel 71, so that the rotation of the central rotating member 61 can be realized by the rotation of the worm wheel 71, thereby rotating the entire link mechanism to provide power for the angular adjustment of the wheelchair bed 100.

As shown in fig. 1, one end of the back link 62 is fixedly connected to the central rotating member 61, and the other end of the back link 62 is movably disposed on the back plate 5. Therefore, when the central rotating part 61 rotates, the back connecting rod 62 can be driven to move, so as to drive the back plate 5 to perform angle adjustment relative to the seat plate 2.

Further, as shown in fig. 7, a guide groove 51 is provided on the back surface of the back plate 5, and a guide wheel 621 is provided at an end of the back link 62, the guide wheel 621 being fitted in the guide groove 51. And further, the guide wheels arranged at the end parts of the back connecting rods 62 can roll in the guide grooves 51, so that the movement of the back connecting rods 62 is guided, the stable movement between the back connecting rods 62 and the back plate 5 is ensured, and the back connecting rods 62 are prevented from slipping out of the guide grooves 51 during movement.

As shown in fig. 3 and 4, the link assembly 6 further includes: a leg link 63 and a hip link 64, wherein the leg link 63 is positioned at the back of the leg plate 3, one end of the leg link 63 is rotatably connected to the seat plate 2, and the other end of the leg link 63 is rotatably connected to the foot plate 4. One end of the hip link 64 is rotatably coupled to the center rotary 61, and the other end of the hip link 64 is rotatably coupled to the leg link 63.

Specifically, one end of the leg link 63 is rotatably connected to the seat 2, and the leg link 63 is disposed on the back of the leg plate 3, so that the leg link 63 can rotate to drive the leg plate 3 to rotate. The other end of the leg link 63 is rotatably connected to the leg plate 4, so that the leg plate 4 and the leg plate 3 can be rotated.

Wherein, buttock connecting rod 64 is connected with central rotation piece 61, and the one end of buttock connecting rod 64 rotates the position of connecting between the both ends of shank connecting rod 63, rotation that can rotate piece 61 through the center provides power to buttock connecting rod 64's rotation, when buttock connecting rod 64 rotates, can provide the motive force to shank connecting rod 63, can make leg plate 3 do the rotation for seat 2, and make sole 4 do the relative rotation for leg plate 3, realize that wheelchair bed 100 becomes the bed by the wheelchair, the overall process passes through link assembly 6 and realizes, and is swift convenient.

Further, as shown in fig. 7, the center rotating member 61 is formed in a cam shape, and a convex portion of the center rotating member 61 is connected to the hip link 64. That is, the central rotating member 61 has an irregular shape and has a protrusion, and the rotation of the central rotating member 61 can push the hip links 64 by the irregular shape, so that when the central rotating member 61 rotates, the hip links 64 are displaced while rotating, and then a pushing force or a pulling force is applied to the leg links 63, so that when the pushing force is applied to the leg links 63, the leg plates 3 can be rotated to the position in the same plane as the seat plate 2, and the wheelchair becomes a bed state.

Accordingly, when the hip link 64 applies a pulling force to the leg link 63, the leg plate 3 can rotate relative to the seat plate 2, so that the rotation angle between the leg plate 3 and the seat plate 2 is gradually reduced, and the wheelchair bed 100 can be changed from a bed to a wheelchair.

As shown in fig. 7, a buffer 9 is further connected between the back link 62 and the support frame 1. Through setting up bolster 9, can make backplate 5 take place to rotate between with seat 2 at the posture adjustment in-process of wheelchair bed 100, the in-process of angle of adjustment can effectual reduction backplate 5 initiative speed, prevents that backplate 5 from at the in-process that gradually flattens, and the speed is too fast to cause the danger to the user.

As shown in fig. 7 and 8, the transmission mechanism 7 further includes: and an output shaft 75, one end of the output shaft 75 being connected to the worm wheel 71, and one end of the output shaft 75 being connected to the central rotating member 61. When the worm wheel 71 rotates, the output shaft 75 can drive the center rotating part 61 to rotate, so that the whole connecting rod assembly 6 is driven to move, the matching mode of the worm wheel 71 and the worm 72 is realized, the state change of the wheelchair bed 100 is realized, the operation is convenient and fast, and the whole structure is simple.

Further, the central rotating member 61 is externally sleeved on the output shaft 75, and a matching key is arranged between the central rotating member 61 and the output shaft 75. That is, the central rotating member 61 and the output shaft 75 are matched in a hole and key manner, so that when the worm wheel 71 rotates, the output shaft 75 can be driven to rotate, and power input is realized.

In addition, the wheelchair bed 100 according to the embodiment of the present invention is provided with front wheels 10 and rear wheels 20 for moving the wheelchair bed 100 at the bottom of the support frame 1. Movement of the wheelchair bed 100 can be facilitated. The back plate 5 of the wheelchair bed 100 is provided with the armrest 30 at the rear, which is convenient for the wheelchair bed 100 to push.

The operation principle of the wheelchair bed 100 of the embodiment of the present invention is explained in detail as follows:

as shown in fig. 8 and 9, the rotation of the power input portion 8 rotates the first bevel gear 73 connected thereto, the first bevel gear 73 is engaged with the second bevel gear 74 to rotate the second bevel gear 74, the second bevel gear 74 is connected to the worm 72, the worm 72 rotates and simultaneously rotates the worm wheel 71, and the rotation of the worm wheel 71 transmits power to the central rotating member 61 through the output shaft 75.

As shown in fig. 8, the rotation of the central rotating member 61 can drive the connecting rod assembly 6 to move, so as to rotate the back plate 5, the leg plate 3 and the foot plate 4, thereby realizing the posture conversion of the wheelchair bed 100. Holistic convenient operation is swift, and overall structure is succinct, convenient operation to it is stable, the security is high.

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 utility model. 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 utility model 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 utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A wheelchair bed comprising:

a support frame;

the seat plate is connected to the supporting frame;

the leg plate is rotatably connected to one side of the seat plate;

the foot plate is rotatably connected to one side of the leg plate, which is far away from the seat plate;

the back plate is rotatably connected to one side of the seat plate, which is far away from the leg plate;

the connecting rod assemblies are respectively connected with the leg plate, the foot plate and the back plate, and are configured to adjust the angles of the leg plate and the back plate relative to the seat plate and the angle of the foot plate relative to the leg plate during movement;

the transmission mechanism is provided with a power input part and comprises a worm wheel and a worm which are meshed with each other, the worm is connected with the power input part, and the worm wheel is connected with the connecting rod assembly so as to drive the connecting rod assembly to move when rotating.

2. The wheelchair bed of claim 1 wherein the drive mechanism further comprises a first bevel gear and a second bevel gear in meshing engagement, the first bevel gear being connected to the power input and the second bevel gear being connected to the worm.

3. The wheelchair bed of claim 1 wherein the power input is a crank or wheel.

4. The wheelchair bed of claim 1 wherein the linkage assembly comprises:

the central rotating piece is rotatably arranged on the supporting frame and is connected with the worm wheel;

one end of the back connecting rod is fixedly connected to the central rotating piece, and the other end of the back connecting rod is movably arranged on the back plate.

5. The wheelchair bed of claim 4 wherein the back of the back plate is provided with a guide slot and the end of the back link is provided with a guide wheel that fits within the guide slot.

6. The wheelchair bed of claim 4 wherein the linkage assembly further comprises:

the leg connecting rod is positioned on the back of the leg plate, one end of the leg connecting rod is rotatably connected to the seat plate, and the other end of the leg connecting rod is rotatably connected to the foot plate;

and one end of the hip connecting rod is rotatably connected to the central rotating part, and the other end of the hip connecting rod is rotatably connected to the leg connecting rod.

7. The wheelchair bed of claim 6 wherein the central rotating member is formed in a cam shape, the central rotating member having a projection that connects the hip link.

8. The wheelchair bed of claim 4 wherein a cushion is further connected between the back link and the support frame.

9. The wheelchair bed of claim 4 wherein the drive mechanism further comprises: and one end of the output shaft is connected with the worm wheel, and one end of the output shaft is connected with the central rotating part.

10. The wheelchair bed of claim 9 wherein the central rotating member is sleeved over the output shaft and a mating key is provided between the central rotating member and the output shaft.