JP2007068920A - Electric lifting chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric lifting chair which is compact when not in use, is inexpensively manufactured by obtaining a simple structure and light weight. <P>SOLUTION: The electric lifting chair comprises: a base part 1 arranged on a floor surface F; a guide frame body 2 erected from the base part 1; a lifting frame body 3 to be lifted along the guide frame body 2; a seat part 4 and a backrest part 19 which are attached to the lifting frame body 3; and an electric driving device 5 for lifting the lifting frame body 3. The base part 1 has a main frame 10 including: right and left leg parts 7, 7 to contact with the floor surface F; and a pivotal support rod part 6 which are supported by the leg parts 7, 7 and have a horizontal shape in a right and left direction. The guide frame body 2 is pivotally supported so as to be freely rotatable by the pivotal support rod part 6 at vertically middle positions. The guide frame body 2, the seat part 4, and the backrest part 19 are rocked with the pivotal support rod part 6 as a rocking center and changed-over into a horizontal unused state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electric lift chair provided with a seat portion and a back portion that are lifted and lowered electrically.

There are lift chairs in which the seat and back (back) are raised and lowered so that elderly people with weak legs and legs and those with disabilities can easily stand up and sit.
As a conventional lifting chair, for example, a chair (frame) placed on a floor surface is provided with a chair body that can be lifted and lowered by an electric motor (see Patent Document 1).
JP 2001-57919 A

However, the conventional electric lift chair requires a large placement space, is difficult to store, and is difficult to carry.
Accordingly, an object of the present invention is to provide an electric lift chair that can be made very compact when not in use, can be simplified in structure, reduced in weight, and manufactured at low cost.

  In order to achieve the above object, an electric lift chair according to the present invention includes a base portion installed on a floor surface, a guide frame body standing on the base portion, and capable of moving up and down along the guide frame body. An electric lift chair comprising a lift frame body, a seat and a back part attached to the lift frame body, and an electric drive device that lifts and lowers the lift frame body. The base portion contacts the floor surface. The main frame is composed of left and right leg portions and horizontal pivot support portions supported by the leg portions, and the guide frame body is attached to the pivot support portion at an intermediate position in the vertical direction. The guide frame body, the seat portion, and the back portion are pivotally supported to be rotatable, and are configured to be swingable around the pivot support portion to be switched to a horizontal unused state. It is.

The main frame is formed from a single pipe.
Moreover, the said leg part consists of the earthing | grounding housing | casing extended in the front-back horizontal direction, and the upper forward inclination support housing | casing provided in a row by the curved part at the rear end of this earthing housing.

And a standing lock mechanism for automatically positioning and fixing the lower end portion of the guide frame body to keep the guide frame body in the upright use state when switching from the unused state to the use state. is there.
The standing lock mechanism includes a guide pin provided at a lower end portion of the guide frame body, a stopper plate attached to the base portion so as to be able to swing up and down, and the guide plate and the guide plate. An upper opening hook-shaped receiving member that holds the lower end of the frame, and a spring member that elastically urges the stopper plate toward the guide pin. The stopper plate has the guide pin relatively A sliding cam portion and a relief notch portion into which the guide pin enters are provided.

The present invention has the following remarkable effects.
According to the electric lift chair according to the present invention, the guide frame body, the seat part, and the back part can be swung easily and quickly to be switched between the use state and the unused state. When in use, the overall height dimension (of the electric lift chair of the present invention) can be reduced (lower). As a result, when the electric lift chair of the present invention is not used, it can be put into a very compact unused state, can be easily stored in a closet or a warehouse, and can be easily carried on a car or the like.
Furthermore, since the guide frame is pivotally supported by the pivot support part at the upper and lower intermediate positions, it is easy to balance and can be switched smoothly and easily when switching between the used state and the unused state. In addition, the guide frame can be stably placed in an unused state in which the guide frame is horizontal.
In addition, the base portion has a main frame that includes left and right leg portions that come into contact with the floor surface and horizontal pivot support portions that are supported by the leg portions, so that the structure is simplified. It can be reduced in weight and can be manufactured at low cost.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
1, 2, and 3 show a state in which a user (an elderly person with weak legs or a physically handicapped person) can sit on the seat 4 of the electric lift chair according to the present invention. FIGS. 4 and 5 show a state in which the back (back) 19 is tilted horizontally, ie, an unused state. 6 and 7 are explanatory views of main parts.

  First, in the use state shown in FIGS. 1 to 3, the electric lift chair of the present invention includes a base portion 1 installed on the floor surface F, a guide frame body 2 standing on the base portion 1, and a guide. An elevating frame 3 that can be moved up and down along the frame 2 and a seat 4 and a back 19 attached to the elevating frame 3 are provided. 1 and 2 show a state in which the seat 4 and the back 19 are arranged at the lowest position, and FIG. 3 shows a state in which the seat 4 and the back 19 rise from the lowest position.

The base portion 1 includes a main frame 10 formed from a single pipe P, and an auxiliary connecting member 8 disposed at the lower portion of the main frame 10.
The main frame 10 is composed of left and right leg portions 7 and 7 that are in contact with the floor surface F, and a left and right horizontal pivot support portion 6 that is integrally supported by the upper ends of the leg portions 7 and 7. Further, each leg portion 7 is composed of a grounding casing 16 extending in the front-rear and horizontal directions, and an upper forward inclined supporting casing 18 connected to the rear end of the grounding casing 16 via a curved portion 17. Yes.
Further, both ends of the auxiliary connecting member 8 are connected to the front and rear intermediate positions of the grounding housings 16 and 16 and arranged horizontally in the left-right direction.

  The guide frame body 2 is held on the base portion 1 in a slightly upward and rearwardly inclined manner, and the upper and lower intermediate positions of the guide frame body 2 are pivotally supported by the pivot support 6 of the base portion 1. The guide frame 2, the seat 4, and the back 19 can be switched to a horizontal unused state (see FIGS. 4 and 5) by swinging around the pivotal support 6 as a swing center. .

  Specifically, the guide frame 2 includes left and right guide rails 20, 20 extending in the vertical direction, upper connection portions 21 that connect the upper ends of the guide rails 20, 20, and lower ends of the guide rails 20, 20. And a lower connecting portion 22 to be connected. At the upper and lower intermediate positions of the guide rails 20 and 20, there are provided pivoting portions 23 and 23 for rotatably holding the pivot support 6.

  In addition, when switching from the unused state to the used state, a standing lock mechanism 9 is provided that automatically positions and fixes the lower end portion of the guide frame body 2 to keep the guide frame body 2 in a standing use state. The mechanism 9 is attached on the auxiliary connecting member 8 of the base portion 1.

The configuration of the standing lock mechanism 9 will be specifically described.
As shown in FIG. 7, the standing lock mechanism 9 includes a guide pin 11 provided at the lower end portion of the guide frame body 2 (guide rail 20) and a stopper plate 24 attached to the base portion 1 so as to swing up and down. An upper opening hook-shaped receiving member 15 that is disposed on the stopper plate 24 and holds the lower end of the guide frame 2, and a spring member 13 that elastically biases the stopper plate 24 toward the guide pin 11; have.

The stopper plate 24 is attached to the auxiliary connecting member 8 by an attachment member 25.
The mounting member 25 includes left and right upright pieces 28 and 28 disposed on the auxiliary connecting member 8 so as to be separated from each other, and a shaft portion 26 disposed between the left and right upright pieces 28 and 28 (see FIG. 5). ), The front end portion of the stopper plate 24 is attached to the shaft portion 26 so as to be swingable in the vertical direction.
Further, one guide pin 11 is provided at each of the lower end portions of the left and right guide rails 20, 20, and one stopper plate 24 is also provided on the shaft portion 26 corresponding to each guide pin 11. .

The stopper plate 24 is formed with a cam portion 12 on which the guide pin 11 slides relatively and a relief cutout portion 14 into which the guide pin 11 enters. Specifically, the cam portion 12 is formed from the upper edge of the stopper plate 24 to the middle upper edge (front and rear), and the relief notch portion 14 is formed continuously at the front end of the cam portion 12. Further, the shaft portion 26 of the mounting member 25 is provided with a spring member 13 that elastically urges the cam portion 12 toward the guide pin 11, and the elastic member urges the spring member 13 at the front end portion of the stopper plate 24. A latching claw 27 for fixing the stopper plate 24 at a predetermined position is provided. Note that the latching claw portion 27 comes into contact with the front edge of the upright piece 28.
The receiving member 15 is disposed below the cam portion 12 of the stopper plate 24, and can swing with the stopper plate 24 about the shaft portion 26 as a swing center.
2 and 5, a part of the structure of the standing lock mechanism 9 (such as the stopper plate 24) is not shown.

1 and 3, an elevating mechanism 29 that drives the elevating frame 3 up and down is provided between the left and right guide rails 20 and 20 of the guide frame 2.
The elevating mechanism 29 includes a cylindrical fixed tube 30 standing on the lower connecting portion 22 of the guide frame body 2, and a sliding rod 31 slidably inserted from the upper opening end 30 a of the fixed tube 30. The electric drive device 5 for sliding the sliding rod 31 up and down (up and down) is attached to the lower part of the fixed tube body 30. Further, the upper end portion of the sliding rod 31 is attached to the back surface of the lifting frame 3, and the lifting frame 3 includes a plurality of rollers 33 that can roll along the left and right guide rails 20, 20.

  A pair of armrests 32 and 32 are attached to the left and right sides of the back part 19 attached to the front surface of the elevating frame 3, and a seat part 4 is provided below the back part 19. The armrests 32, 32 and the seat portion 4 are horizontally arranged in a use state and can be folded upward. Specifically, the armrest 32 and the seat portion 4 are attached to the elevating frame body 3 so as to be vertically swingable around the rear end (base end) of each.

  Further, an operation part 34 for operating the electric drive device 5 to raise and lower the lifting frame 3 is attached to the front end part (tip part) of the armrest 32. In the cover body 35 attached to the back side of the guide frame body 2, wiring (not shown), an electronic board, and the like that electrically connect the operation unit 34 and the electric drive device 5 are accommodated.

The unused state shown in FIG. 4 and FIG. 5 will be described. The lower end of the guide frame body 2 is disposed in a horizontal state with the standing lock mechanism 9 unlocked, and the lifting frame body 3 and the lifting frame body 3. The back part 19 attached to is also horizontal. The seat 4 and the armrests 32, 32 are folded and arranged horizontally (in parallel with the back 19). The front surface of the back portion 19 (the lower surface in FIGS. 4 and 5) and the upper surface of the seat portion 4 (the upper surface in FIGS. 4 and 5) are in contact with each other.
Although not shown, a stopper for maintaining the horizontal (unused) posture of the guide frame 2 is provided on the pivot support 6 or the pivot 23.

The electric lift chair of the present invention can be freely changed in design, and in the use state (locked state) of the standing lock mechanism 9 shown in FIG. 7, the force for holding the lower end portion of the guide frame body 2 of the standing lock mechanism 9 is increased. In order to improve safety, a fixing member such as a screw for connecting the lower end of the guide frame 2 and the receiving member 15 is provided (not shown), and when the unused state (unlocked state) It is free even if the stop member is removed.
Further, a non-slip member that contacts the floor surface F may be attached to the grounding housing 16 of the main frame 10 formed from a single pipe P.
Moreover, the electric power supplied to the electric drive device 5 may be supplied from an external power source or may have a battery built therein (not shown).

The use method (action) of the electric lift chair of the present invention described above will be described.
First, the case where the use state shown in FIGS. 1 and 2 is changed to the unused state shown in FIGS. 4 and 5 will be described.
First, when the seat part 4 is in the upper position (as shown in FIG. 3), the operation part 34 is operated so that the seat part 4 is almost at the lowest position (predetermined position for making it unused). To come.
Then, in FIG. 1, the seat 4 and the left and right armrests 32, 32 are swung upward and folded. In this state, the seat portion 4 and the armrests 32 and 32 are folded in a state parallel to the back portion 19.

As shown in FIG. 7, the standing lock mechanism 9 is in a locked state, and the stopper plate 24 is swung downward to disengage the guide pin 11 from the escape notch 14 and the lower end of the guide frame 2 is Separate from the receiving member 15.
Then, the guide frame body 2 is rotated counterclockwise (counterclockwise) around the pivotal support portion 6 of the base portion 1 with the lower end portion of the guide frame body 2 and the guide pin 11 being detached (see FIG. 1). In other words, the upper end of the guide frame 2 is swung forward and the lower end is swung backward. At this time, the back portion 19, the seat portion 4, and the armrests 32 and 32 attached to the elevating frame body 3 rotate (swing) counterclockwise around the pivotal support portion 6 together with the guide frame body 2. When the frame body 2 and the back portion 19 / seat portion 4 / armrests 32, 32 are in a horizontal state as shown in FIG. 4, the guide frame body 2 is locked and positioned and fixed by a stopper (not shown). As described above, the electric lift chair of the present invention can be set to the unused state shown in FIGS.

Next, a case where the unused state is changed to the used state will be described.
In FIG. 4, the guide frame 2 is prevented from rotating and maintained in a horizontal state (not shown). The stopper is unlocked, and the guide frame 2 is rotated clockwise around the pivotal support 6. Rotate (clockwise). At this time, the back portion 19, the seat portion 4, and the armrests 32 and 32 also rotate (swing) clockwise around the pivotal support portion 6 together with the guide frame body 2.

  Thus, when the lower end portion of the guide frame body 2 is rotated clockwise (swings downward), the guide pin 11 provided at the lower end portion of the guide frame body 2 is moved to the stopper plate as shown in FIG. Contact 24 cam portions 12. Further, when the lower end portion of the guide frame 2 swings forward (rotates clockwise), the guide pin 11 slides forward along the cam portion 12 and overcomes the elastic urging force of the spring member 13. To swing the stopper plate 24 downward. When the guide pin 11 moves forward while sliding on the cam portion 12, the lower end portion of the guide frame 2 is received by the receiving member (at the same time as the spring member 13 is elastically urged). 15 is fitted and held in the locked state shown in FIG.

  That is, when the guide frame body 2 is rotated clockwise, the guide frame body 2 is automatically locked and held by the standing lock mechanism 9 and is erected (see FIG. 1). Then, the seat 4 and the armrests 32, 32 can be placed in a horizontal state by swinging downward from a state in which they are folded upward.

As described above, the electric lift chair of the present invention includes the base portion 1 installed on the floor surface F, the guide frame body 2 standing on the base portion 1, and the lift that can be lifted and lowered along the guide frame body 2. In an electric lift chair provided with a frame 3, a seat 4 and a back 19 attached to the lift frame 3, and an electric drive device 5 for lifting and lowering the lift frame 3, the base 1 is a floor The main frame 10 is composed of left and right leg portions 7 and 7 that are in contact with the surface F, and a horizontal pivoting support portion 6 that is supported by the leg portions 7 and 7. The guide frame 2, the seat 4, and the back 19 are pivoted about the pivot 6 at the center of the pivot so as to be rotatable. Since it can be switched to the unused state, the guide frame body 2, the seat part 4 and the back part 19 are swung to easily and quickly switch between the used state and the unused state. Rukoto can, if the guide frame 2 or the like and horizontally unused state, can be very particularly the overall height (electric lift chair of the present invention) smaller (lower). Thus, when the electric lift chair of the present invention is not used, it can be in a compact unused state, can be easily stored in a closet or a warehouse, and can be easily carried on a car or the like.
Further, since the guide frame 2 is pivotally supported by the pivot support 6 at its upper and lower intermediate positions, it is easy to balance and can be switched smoothly and easily when switching between the used state and the unused state. In addition, the guide frame body 2 can be stably placed in an unused state where the guide frame body 2 is horizontal.
The base portion 1 has a main frame 10 composed of left and right leg portions 7 and 7 that are in contact with the floor surface F and a horizontal pivot support portion 6 that is supported by the leg portions 7 and 7. Therefore, the structure becomes simple, the weight can be reduced, and the manufacturing can be made at a low cost.

  Further, since the main frame 10 is formed from a single pipe P, the structure of the base portion 1 becomes very simple. Therefore, the manufacturing cost can be greatly reduced, the weight can be reduced, and transportation is facilitated.

  Further, the leg portion 7 is composed of a grounding casing 16 extending in the front-rear and horizontal directions, and an upper forward inclined supporting casing 18 connected to the rear end of the grounding casing 16 via a curved portion 17. When switching between the used state and the unused state, it is easy to balance and can be switched smoothly and easily, and the guide frame body 2 is placed in a stable state in the unused state. be able to.

  Further, when switching from the unused state to the used state, the guide frame body 2 is provided with an upright lock mechanism 9 that automatically positions and fixes the lower end portion of the guide frame body 2 to keep the guide frame body 2 in the upright state of use. The frame body 2 can be smoothly and reliably erected on the base portion 1, and the switching operation from the unused state to the used state can be easily performed.

  Further, the standing lock mechanism 9 is disposed on the guide pin 11 provided at the lower end portion of the guide frame body 2, the stopper plate 24 attached to the base portion 1 so as to be swingable up and down, and the stopper plate 24. And a receiving member 15 having an upper opening hook shape that holds the lower end portion of the guide frame body 2 and a spring member 13 that elastically urges the stopper plate 24 toward the guide pin 11, and the stopper plate 24 includes: Since it has the cam part 12 with which the guide pin 11 slides relatively and the notch part 14 for escape into which the guide pin 11 enters, the switching operation between the used state and the unused state can be easily performed. it can. In addition, the standing lock mechanism 9 can hold the lower end portion of the guide frame body 2 smoothly and accurately. Therefore, even if the user leans against the back part 19 in the use state, the back part 19 (guide frame body 2) does not rotate and is safe.

It is a side view which shows the usage pattern of this invention. It is a front view. It is a side view. It is a side view which shows an unused state. It is a front view. It is principal part explanatory drawing. It is principal part explanatory drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base part 2 Guide frame body 3 Lifting frame body 4 Seat part 5 Electric drive device 6 Pivot support part 7 Leg part 9 Standing lock mechanism
10 Mainframe
11 Guide pin
12 Cam section
13 Spring member
14 Relief notch
15 Receiving member
16 Grounding enclosure
17 Curved part
18 Supporting enclosure
19 back
24 Stopper plate F Floor P Pipe

Claims (5)

A base part (1) installed on the floor surface (F), a guide frame (2) standing on the base part (1), and a lifting frame that can be raised and lowered along the guide frame (2) A body (3), a seat part (4) and a back part (19) attached to the lifting frame body (3), and an electric drive device (5) for lifting and lowering the lifting frame body (3). In the electric lift chair
The base portion (1) includes left and right leg portions (7) and (7) that are in contact with the floor surface (F), and a horizontal pivot support portion that is supported by the leg portions (7) and (7). (6), the guide frame body (2) is pivotally supported by the pivot support member (6) at an upper and lower intermediate position thereof, and the guide frame The body (2), the seat (4), and the back (19) are configured to be swingable around the pivot support (6) as a swing center and switched to a horizontal unused state. An electric lifting chair characterized by that.   The electric lift chair according to claim 1, wherein the main frame (10) is formed of a single pipe (P).   The leg portion (7) includes a grounding housing (16) extending in the front-rear and horizontal directions, and an upwardly forward-supporting support housing (connected to the rear end of the grounding housing (16) via a curved portion (17) ( 18) and the electric lift chair according to claim 1 or 2.   When switching from the unused state to the used state, the lower end portion of the guide frame body (2) is automatically positioned and fixed to keep the guide frame body (2) in the upright use state ( The electric lift chair according to claim 1, 2 or 3, comprising 9).   The standing lock mechanism (9) includes a guide pin (11) provided at a lower end portion of the guide frame (2) and a stopper plate (24) attached to the base portion (1) so as to swing up and down. ), An upper opening hook-shaped receiving member (15) which is disposed on the stopper plate (24) and holds the lower end of the guide frame (2), and the stopper plate (24) is connected to the guide pin. (11) a spring member (13) that elastically biases toward the side, and the stopper plate (24) includes a cam portion (12) on which the guide pin (11) slides relatively, and a guide pin The electric lift chair according to claim 4, further comprising: a relief cut-out portion (14) into which (11) enters.

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