WO2011046299A2

WO2011046299A2 - Lift chair with lifting driving module hinged thereto

Info

Publication number: WO2011046299A2
Application number: PCT/KR2010/006177
Authority: WO
Inventors: 전경진; 홍재수; 김종현
Original assignee: 한국생산기술연구원
Priority date: 2009-10-14
Filing date: 2010-09-10
Publication date: 2011-04-21
Also published as: CN102724942A; JP2013508011A; WO2011046299A3; KR100960094B1

Abstract

The invention relates to a lift chair with a lifting driving module hinged thereto comprising: a main frame; a seat frame which is coupled to the main frame such that the seat frame is liftable, and which has a seat for enabling a user to sit thereon; and the lifting driving module having one end coupled to the main frame and the other end hinged to the seat frame, and which is constituted by a plurality of members such that the length of the lifting driving module varies in upward and downward directions to lift the seat frame.

Description

Elevator chair with hinged lift module hinged

The present invention relates to an elevating chair for the movement of the elderly, patient or disabled, and more specifically, the elevating drive module for elevating the chair is coupled to the hinge can reduce the noise and vibration generated during the elevating the chair stably. It is about a lift chair.

In general, patients with disabilities, the elderly, or disabled people live with the help of carers or dependents. However, caregivers or dependents were frequently injured by the load of the patient or the elderly while the patient or the elderly were moving, sitting or standing up when caring for the patient or the elderly. Therefore, recently, various lifting chairs to assist a patient or an elderly person sit or stand up have been disclosed.

However, the conventional lifting chair is provided with a power transmission means for directly transmitting the power of the drive unit to the lifting chair. Therefore, the load of the patient or the elderly is directly transmitted to the power transmission means, there is a problem that causes the failure of the power transmission means. Furthermore, there was a problem that noise and vibration were generated in the power transmission means by the load of the patient or the elderly.

The present invention is to solve the above problems, an elevating chair that can reduce the noise and vibration of the elevating process by indirectly transferring the power of the drive unit to the elevating seat frame by using the elevating drive module having a variable length. In providing.

In addition, by providing a lift chair capable of raising and lowering the seat frame stably regardless of the weight of the patient and the elderly, by combining the seat frame and the hinge lifting the elevating drive module.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

The elevating chair of the present invention for solving the above problems is coupled to the main frame, the main frame can be lifted and lifted, the seat frame having a seating seat seated by the user and one end is coupled to the main frame and the other end is the seat frame It is coupled to the hinge, and consists of a plurality of members including a lifting drive module for lifting the seat frame while the length is variable in the vertical direction.

The elevating driving module may include a fixing member having a lower portion coupled to the main frame and a moving member having an upper portion hinged to the seat frame and movably coupled to the fixing member in an upward and downward direction. And the elevating drive module includes a rotary member for rotating around the up, down axis, the movable member is formed with a groove into which the rotary member can be fitted from the bottom, the inner peripheral surface of the groove and the rotating member A thread is formed on one of the outer circumferential surfaces, and a threaded bone may be formed on the other.

In addition, the elevating drive module may be coupled to the main frame and the seat frame such that the lifting direction of the seat frame and the longitudinal variable direction of the lifting drive module form a predetermined angle. The seat frame has a predetermined angle with the vertical direction of the lifting direction, and the angle formed by the length-variable direction of the lifting drive module is an angle smaller than the angle formed by the lifting direction of the seat frame. Can be formed.

On the other hand, the main frame is provided with a plurality of rollers in the lifting direction of the seat frame, the guide frame for guiding the lifting of the seat frame while the plurality of rollers are fitted to the seat frame is formed long in the up, down direction Can be.

The main frame may be provided with a plurality of moving wheels, the moving wheels including a pair of front wheels and a pair of rear wheels, and the pair of rear wheels may be independently driven.

Elevator chair of the present invention for solving the above problems has the following effects.

First, the length of the elevating drive module is changed by the power of the driving unit, and the seat frame is indirectly raised and lowered by the force generated while the length is varied. Therefore, it is possible to reduce noise and vibration that may occur when the driving force of the driving unit is directly transmitted to the seat frame to which a large load of the weight of the patient or the elderly is applied. Furthermore, the load applied to the seat frame can be directly transmitted to the power transmission means, thereby preventing the failure of the power transmission means.

Secondly, by combining the seat frame and the hinge lifting the elevating drive module, it is possible to raise and lower the seat frame stably regardless of the weight of the patient and the elderly. And it is possible to prevent the connection between the elevating drive module and the seat frame by the load on the seat frame 20. Furthermore, it is possible to minimize the interference that may occur between the components for guiding the lifting of the seat frame.

Third, the elevating drive module is installed in the elevating chair so that the direction in which the length of the elevating drive module is variable and the direction in which the seat frame is elevating form a certain angle. Eventually, as the length of the elevating drive module is variable, the direction of the force applied to the seat frame and the direction in which the elevating drive module moves up and down form a certain angle, so that the noise and vibration generated when the seat frame is raised and lowered stably. Can be reduced.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of a lift chair in one embodiment of the present invention;

2 is a side view of FIG. 1;

3 is a rear view of FIG. 1;

Figure 4 is an exploded perspective view of the main part of the elevating chair of one embodiment of the present invention;

Figure 5 is an exploded perspective view of the main part of the elevating chair of the embodiment of the present invention;

Figure 6 is a perspective view of the elevating chair in one embodiment of the present invention;

Figure 7 is a side view of the elevating chair in one embodiment of the present invention;

8 is a configuration diagram schematically showing a driving method of a lift drive module according to an embodiment of the present invention;

9 is a view showing a state in which the elevating drive module is raised and lowered while the seat frame is variable in length.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of this embodiment, the same name and the same reference numerals are used for the same configuration and additional description thereof will be omitted.

1 is a perspective view of an elevator according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a rear view of FIG. 5 is an exploded perspective view of the main part of the elevating chair of one embodiment of the present invention, and FIG. 6 is a perspective view of the elevating chair of one embodiment of the present invention. Figure 7 is a side view of the lifting chair in one embodiment of the present invention.

Referring to Figures 1 to 7 the overall configuration of the elevating chair of one embodiment of the present invention will be described.

The elevating chair of the present embodiment includes a main frame 10, a seat frame 20, and an elevating driving module 30.

The main frame 10 includes a base portion 11 and the lifting support 12.

The base portion 11 forms the lower part of the elevating chair. In addition, during the movement of the elevating chair or the elevating of the seat frame, the elevating support part 12, the seat frame 20, and the elevating driving module 30 serve to stably support.

In addition, a plurality of moving

wheels

13 and 14 are installed in the base unit 11 so that the elevating chair can be moved by a user's manipulation or caregiver. In addition, the plurality of

moving wheels

13 and 14 may be installed in the base unit 11 in various forms, and in the present embodiment, a pair of front wheels 13 and a pair of rear wheels 14 may be provided. The pair of rear wheels 14 is driven independently by the pair of drive units 15. Therefore, the elevating chair can move effectively in a narrow space.

And in front of the base portion 11 may be installed a footrest 16 on which the user's foot can be located.

The lifting support part 12 is formed at a height corresponding to the height of the seat frame 20 to be described later and is coupled to the base part 11. And the seat frame 20 is coupled to the lifting support 12 so as to be lifted. And the lifting support 12 may be formed in various forms for the stable lifting, lowering of the seat frame 20.

Specifically, the elevating support part 12 in the present embodiment includes a left bar 12a, a right bar 12b, and an upper bar 12c. The left and

right bars

12a and 12b are distances at which the guide portions 23 are spaced apart from each other so that the seat frame 20 can move up and down while the pair of guide portions 23 of the seat frame 20 to be described later are fitted. It is spaced apart by the coupling to the base portion (11). Therefore, the seat frame 20 moves up and down while the guide portion 23 is sandwiched between the left and

right bars

12a and 12b.

And inside the left and

right bars

12a and 12b, surfaces facing the left and right sides of the pair of guide portions 23 are formed, and surfaces facing the left and right sides of the pair of guide portions 23 are provided. A plurality of rollers 17 are provided along the up and down longitudinal directions along the lifting direction of the seat frame 20. In addition, the seat frame 20 moves up and down in a state where the guide part 23 is fitted to the plurality of rollers 17. The lifting direction of the seat frame 20 is determined according to the angle at which the plurality of rollers 17 are installed.

The upper bar 12c connects the ends of the left and

right bars

12a and 12b. And the upper bar 12c is formed recessed to a certain distance rear. Therefore, the hinge connecting portion 24 of the back support 22 to be described later and the end of the movable member 32 coupled to the hinge connecting portion 24 forms a space that can pass through when the seat frame 20 is elevated.

The seat frame 20 is coupled to the main frame 10 so as to be elevated, and includes a seating seat (not shown) for a user to sit on.

Seating sheet (not shown) may be made of a variety of forms and materials that the user can be seated stably. In addition, the seat frame 20 may be coupled to the main frame 10 to be lifted and lifted in various forms.

Specifically, the seating seat in the present embodiment is formed with a backrest to allow the user to lean on the back, the seat frame 20 is a seat portion in a shape corresponding to the shape of the seating seat so as to support the bottom and rear of the seating seat 21 and the backrest part 22 are formed. Therefore, the seat frame 20 moves up and down along the lifting support 12 while stably supporting the seating sheet, and eventually the seating sheet is raised and lowered stably.

And the back of the back portion 22, the guide portion 23 for guiding the lifting of the seat frame 20 is coupled. In addition, the guide part 23 may be formed in various forms to guide the lifting of the seat frame 20. In the present embodiment, the pair of guide portions 23 are coupled at a predetermined distance apart. In addition, the seat frame 20 moves up and down along the lifting support 12 in a state in which it is fitted to the inner surfaces of the left and

right bars

12a and 12b spaced apart by a length corresponding to the spaced distance of the guide unit 23. Done.

And the guide portion 23 is installed in the predetermined distance in the left and right ends of the backrest 22. Therefore, the front part of the left and

right bars

12a and 12b and the outer part of the pair of guide parts 23 on the back of the back part 22 come into contact. As a result, the seat frame 20 is moved up and down while being guided to the front of the left and

right bars

12a and 12b.

And the pair of guide portion 23 is formed long in the up, down direction, the right side of the left guide portion and the left side of the right guide portion is formed with a groove into which a plurality of rollers 17 can be fitted. As a result, a plurality of rollers 17 are inserted into the pair of guide portions 23, and the pair of guide portions 23 are fitted between the left and

right bars

12a and 12b of the lifting support 12. . Therefore, the seat frame 20 is stably raised and lowered along the installation direction of the plurality of rollers 17 in accordance with the elevation of the elevation drive module 30 to be described later.

In addition, the pair of handles 24 may be rotatably coupled to the backrest part 22 in the up and down directions. And the elevating chair of the present embodiment includes an operation unit 25 that the user can operate the movement and driving of the elevator, the operation unit 25 may be selectively coupled to the pair of handles 24. Therefore, when the user is left-handed, the left-handed part can be selectively coupled to the right-handed part when the user is right-handed.

One end of the elevating drive module 30 is hinged to the main frame 10 and the other end is hinged to the seat frame 20. In addition, the length of the seat frame 20 is raised and lowered along the vertical direction, which is composed of a plurality of members.

That is, in this embodiment, the lift drive module 30 is installed separately from the seat frame 20. The lifting drive module 30 does not directly lift the seat frame 20, but the length of the lift drive module 30 is variable, and the seat frame 30 is lifted according to the variable length.

Therefore, when the driving unit is installed in the seat frame 20 to prevent the seat frame 20 to be lifted to become heavy, to prevent the noise and vibration due to the increase in weight to raise and lower the seat frame 20 more stably Can be. And when the driving unit directly lifts the seat frame 20, it is not necessary to include a power transmission means for transmitting the driving force to the seat frame 20, it is possible to prevent the noise and vibration generated from the power transmission means noise The seat frame 20 can be raised and lowered stably with few.

The lifting drive module 30 includes a fixing member 31 and a moving member 32.

The fixing member 31 is hinged to the lower portion of the main frame 10. In the present embodiment, the lower portion of the fixing member 31 is coupled to the base portion 11.

The moving member 32 is coupled to the fixed member 31 to be movable in the up and down directions. The moving member 32 may be coupled with the fixing member 31 in various ways according to the method of driving the moving member 32. The moving member 32 in this embodiment is coupled to the inserted state in the fixing member 31. As the length of the moving member 32 inserted into the fixing member 31 is changed by driving of the driving unit, the moving member 32 moves in the vertical direction.

8 is a configuration schematically showing a driving method of a lift drive module of this embodiment. The moving member 32 may move in up and down directions in various ways. Referring to FIG. 8, the lifting driving module 30 in the present embodiment is moved up and down by a driving motor (not shown). It further comprises a rotating member 33 for rotating around the axis of the. And the movable member 32 is formed with a longitudinal groove in which the rotary member 33 is inserted from the bottom, a portion of the rotary member 33 is inserted into the groove. And one of the inner circumferential surface of the groove and the outer circumferential surface of the rotating member 33 is formed with a screw thread, the other is a screw bone is formed. Therefore, the rotating member 33 can be raised and lowered stably while the rotating member 33 is rotated by a driving motor (not shown). In addition, a stopper 32a may be installed on the outer circumferential surface of the movable member 32 to prevent the movable member 32 from rising above a predetermined height.

As a result, the length of the entire elevating drive module 30 is variable according to the movement of the moving member 32 in the up and down direction, and the seat frame 20 is the elevating support part 12 according to the change in the length of the elevating drive module 30. Ascend along.

And the moving member 32 in the present embodiment is the upper hinged to the seat frame 20. Specifically, the movable member 32 is hinged to be rotated about the left and right axis to the hinge coupling portion 26 formed on the upper back 22 of the seat frame 20.

That is, in this embodiment, the lifting drive module 30 is not installed in the seat frame 20, but is separated from the seat frame 20. And while the force generated while the length of the elevating drive module 30 is transmitted to the seat frame 20 is the seat frame 20 is raised and lowered. On the other hand, the weight of the user seated on the seat frame 20 is varied, and thus the load applied to the seat frame 20 also varies. Therefore, in this embodiment, the movable member 32 is rotatably hinged to the seat frame 20 so that the connection between the movable member 32 and the seat frame 20 is damaged by the load on the seat frame 20. You can prevent it.

And the elevating drive module 30 is coupled to the main frame 10 and the seat frame 20 so that the lifting direction of the seat frame 20 and the longitudinal variable direction of the lifting drive module 30 to form a predetermined angle (α). . Therefore, while the length of the elevating drive module 30 is variable, the direction of the force transmitted to the seat frame 20 also forms the elevating direction and the predetermined angle α of the seat frame 20. Therefore, the force generated while the length of the elevating drive module 30 is variable is transmitted from the elevating support 12 to the seat frame 20 in the direction of the seat frame 20. Therefore, the friction force between the seat frame 20 and the lifting support 12 may be reduced, and noise and vibration generated during the lifting process of the seat frame 20 may be reduced.

In particular, in the present embodiment, the seat frame 20 is elevated in a direction inclined at a predetermined angle in the vertical direction. And the lifting drive module 30 is variable in length in the lifting direction of the seat frame 20 is less than the angle formed with the vertical direction. Therefore, the elevating drive module 30 can be effectively lifted to the seat frame 20 by the force generated while being variable in the longitudinal direction.

Hereinafter will be described the driving process of the elevating chair of an embodiment of the present invention.

According to the user's input through the operation unit 25, the pair of driving units 15 of the elevating chair are operated, and the rear wheels 14 are driven accordingly. And the user can move to the desired point with the lifting chair while seated.

In addition, the seat frame 20 is moved up and down while being guided to the lifting support part 12 according to a user's input through the operation unit 25. Specifically, the moving member 32 is moved in the up and down directions by being inserted into the fixing member 31 by various driving methods. Accordingly, the entire length of the elevating drive module 30 is variable.

And the movable member 32 and the seat frame 20 is hinged. And the guide portion 23 of the seat frame 20 is coupled to the plurality of rollers 17 formed in the lifting support 12 is inserted. As a result, the force generated while the length of the elevating drive module 30 is variable is transmitted to the seat frame 20. The guide part 23 of the seat frame 20 is guided to the plurality of rollers 17 of the lifting support part 12 to move up and down.

9 is a view showing a state in which the elevating drive module is raised and lowered while the seat frame is variable in length. 9, the moving direction of the elevating drive module 30 and the lifting direction of the seat frame 20 form a predetermined angle. And the length of the whole lifting drive module 30 is lengthened as the upper portion of the moving member 32 moves, the hinge is coupled to the upper portion of the moving member 32 as the length of the lifting drive module 30 is lengthened. The seat frame 20 moves upwards.

At this time, the seat frame 20 is moved upward while being guided to the lifting support 12, and the seat frame 20 moves upward and maintains a direction perpendicular to the ground and an angle formed. And the angle formed by the lifting drive module 30 and the seat frame 20 is increased in length is gradually smaller along the movement of the upper portion of the movable member (32). As a result, unlike the seat frame 20 that moves in the vertical direction while maintaining a direction perpendicular to the ground, the elevating drive module 30 has a long overall length along the movement of the moving member 32. As it is built, the direction perpendicular to the ground and the forming angle increase and become inclined toward the ground.

As a result, the upper portion of the movable member 32 of the present invention is coupled to the hinge coupler 26 of the seat frame 20 so as to be rotatable about a left and right axis, and thus the hatch is moved along the up and down movement of the movable member 32. The angle formed by the copper module 30 and the seat frame 20 may vary. In addition, the lower portion of the fixing member 31 is hinged to the base frame 11 so as to be rotatable about a left and right axis, so that the whole of the elevating driving module 30 moves up and down according to the movement of the moving member 32. And the forming angle can be varied.

Therefore, in the present embodiment, the seat frame 20 moves up and down along the installation direction of the plurality of rollers 17. And the driving force capable of elevating the seat frame 20 is not directly transmitted to the seat frame 20, the driving force generated by various methods of the elevating drive module 30 is transmitted to the moving member 32, The moving member 32 is transferred to the seat frame 20 as it moves up and down. As a result, in this embodiment, the driving force is transmitted to the moving member 32 in a simple manner, and the seat frame 20 moves up and down in accordance with the driving of the moving member 32.

Therefore, it is not necessary to include a power transmission means for transmitting the driving force of the driving unit to the seat frame 20, it is possible to prevent the noise and vibration generated in the power transmission means, while the seat frame 20 to stably lift the seat frame 20 (20) It is possible to significantly reduce noise and vibration generated by power transmission means generated during lifting.

And the user can vary the height of the seating seat while seated on the elevating chair, it is possible to sit or stand up without the help of a caregiver or guardian.

As described above, the preferred embodiments of the present invention have been described, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope thereof has ordinary skill in the art. It is obvious to them. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

Claims

Main frame;

A seat frame coupled to the main frame to be liftable and having a seating seat for a user to sit on; And

A lift drive module having one end hinged to the main frame and the other end hinged to the seat frame, the lifting frame configured to lift and lower the seat frame while being variable in length in the vertical direction;

Lifting chair comprising a.
The method of claim 1,

The lifting drive module,

A lowering chair comprising a fixing member having a lower hinge hinged to the main frame and a moving member having an upper hinge hinged to the seat frame and movably coupled to the fixing member in an upward and downward direction.
The method of claim 2,

The elevating drive module further includes a rotating member that rotates about an up and down axis;

The movable member is provided with a groove into which the rotating member can be fitted from the bottom,

One of the inner circumferential surface of the groove and the outer circumferential surface of the rotating member is formed with a screw thread, and the other is a lifting chair formed with a screw bone corresponding to the thread.
The method of claim 2,

Lifting chair is provided with a stopper to the movable member does not rise above a certain height.
The method of claim 1,

The elevating drive module is coupled to the main frame and the seat frame so that the lifting direction of the seat frame and the longitudinal variable direction of the lifting drive module to form a predetermined angle.
The method of claim 5,

The seat frame has a predetermined angle with the vertical direction, the lifting direction,

The lifting angle of the elevating drive module in the longitudinal direction is formed in the vertical direction and the lifting angle of the seat frame to form an angle smaller than the angle formed in the vertical direction.
The method of claim 1,

The main frame is provided with a plurality of rollers along the lifting direction of the seat frame,

Lifting chair is formed in the seat frame is a guide portion for guiding the lifting of the seat frame while the plurality of rollers are fitted in a long direction, up and down.
The method of claim 1,

Lifting chair is provided with a plurality of moving wheels in the main frame.
The method of claim 8,

The moving wheel includes a pair of front wheels and a pair of rear wheels,

The pair of rear wheels are lift chairs independently driven.
The method of claim 1,

A pair of handles are coupled to the seat frame,

And elevating chair for manipulating movement and driving of the elevating chair, the control unit being selectively coupled to the pair of handles.