JP5166592B1 - Seating tool with auxiliary mechanism - Google Patents

Abstract

To provide a seating tool with an auxiliary function that allows a seated person to stand up easily and change the direction.
A stand-up assist mechanism, a drive mechanism, and a base 20 are provided, the stand-up assist mechanism is provided below the seat unit 10, the drive mechanism is provided on the back side of the stand-up assist mechanism, the drive mechanism includes a moving body, and the stand-up assist is provided. The mechanism comprises several links, some links are connected to the seat unit 10, other links are connected to the base 20, other links are connected to the moving body, and the seat unit 10 is connected to the moving body. It was made to go up and down according to the raising and lowering. An orientation changing mechanism and a base 20 are provided, the orientation changing mechanism is a rotating body, the rotating body is connected to the seat unit 10, and when the base 20 is grounded to the installation surface, the rotating body does not rotate and the base 20 is removed from the installation surface. When floating, the rotating body touches the installation surface and rotates. The sitting tool may be provided with both a standing assistance mechanism and a direction changing mechanism.
[Selection] Figure 1

Description

The present invention relates to a sitting tool such as a sitting chair, a table chair, and a sofa, and in particular, a standing assist function capable of assisting a standing person sitting on the sitting chair and a seating person's seat by rotating the seat. seated again and again about with a change possible orientations change mechanism orientation.

  There are various existing sitting tools. In recent years, with the aging of the population, a seating tool (Patent Document 1) has a function that allows an elderly person with weak legs to easily stand and sit, and a seating function that can change the orientation of the seated person while sitting. A tool with an auxiliary function such as a tool (Patent Document 2) has been proposed.

JP 2003-19055 A JP 2003-61775 A

  The invention described in Patent Document 1 relates to a lifting chair that assists the rising of elderly people and disabled persons with weak knees or legs, reduces the burden at the time of rising, and makes it possible to rise smoothly and safely and reliably. (Paragraph number 0004). This lifting chair can lift and lower the seat (seat frame and seat body) by a drive mechanism, and a forward tilt mechanism that automatically tilts the seat body forward at a predetermined height, and the seat An angle detection means for stopping the forward tilt mechanism when the main body reaches a predetermined forward tilt angle is provided (paragraph 0005).

  The invention described in Patent Document 2 relates to a lifting chair that can be easily transferred from a bed, a chair, etc., and can change the body direction so that it can be easily operated even when sitting (paragraph number 0004). This lifting chair includes a seat unit that is lifted and lowered by a lifting drive mechanism, and the seat unit can be swung back and forth at an angle of 45 to 90 degrees in plan view (paragraph number 0005).

SUMMARY OF THE INVENTION An object of the present invention is to provide a seating tool with an auxiliary function that allows a seated person to easily stand up and change the direction in a desired direction.

Auxiliary mechanism with the seating device of the present invention, the seating tool seated person with the possible seat unit seated and standing assist mechanism for assisting the standing of the seated person to the seat unit, which drives the raising or lowering of the upright auxiliary mechanism Can be installed on the installation surface (flooring, tatami etc.) of the drive mechanism, the orientation changing mechanism that can change the orientation of the seated person sitting on the seat unit by rotating the seat unit A support base is provided below the seat unit, the drive mechanism is provided on the back side of the stand-up support mechanism, and the drive mechanism can be moved up and down in the axial direction of the rotary shaft by rotation of the rotary shaft The standing assist mechanism includes several links, the leading ends of some of the links are connected to the seat unit, and the rear ends of the other links are connected to the base. Concatenated and others And the rear end part of the link is connected to the movable body, several links leading end side rises to the seat unit, wherein the moving body by the rotation of the rotary shaft is connected to said seat unit to rise was elevated to the rotation axis of the distal end side of several links which are connected to the seat unit and the mobile drops is lowered by reverse rotation can be lowered to said seat unit, the orientation changing mechanism Is a rotatable rotating body, the rotating body protrudes below the standing assist mechanism, can be moved up and down as the standing assist mechanism is lifted, and the base is in contact with the installation surface Then, when the drive mechanism lowers the stand-up assist mechanism and grounds the rotating body to the installation surface, the drive mechanism leaves the installation surface, and the drive mechanism raises the stand-up assist mechanism to install the rotary body. When the base is separated from the installation surface, the rotating body is grounded to the installation surface, and when the base is separated from the installation surface, the seat unit is rotatably supported. The seat unit is not rotated away.

In the seating device with an auxiliary mechanism according to the present invention, in the seating device with the auxiliary mechanism , the drive mechanism can tilt the standing assist mechanism forward and tilt the seat unit connected to the standing assist mechanism forward. It is also possible to tilt the auxiliary mechanism backward to tilt the seat unit connected to the standing auxiliary mechanism.

In the seating device with an auxiliary mechanism of the present invention, in any one of the seating devices with the auxiliary mechanism, the rotating body may be provided with a stopper for limiting the rotation angle of the rotating body.

The seating device with an auxiliary mechanism according to the present invention may be configured such that in any one of the seating devices with an auxiliary mechanism, an armrest is provided on the seat unit.

The sitting tool with an auxiliary mechanism of the present invention has the following effects.
(1) When the seat unit rises to a position where a seated person can easily rise, the seat unit tilts forward, so that a person sitting on a chair, particularly a sitting tool, can easily stand up and can easily get off the sitting tool. In addition, it is easy to sit on a chair because it can be seated while standing and lowered to the installation surface.
(2) Since the seat unit can be rotated simply by grounding the rotating body on the installation surface, it is easy to change the orientation of the seat unit. Further, since the base cannot be rotated when it is lowered to the installation surface, it is safe without being inadvertently rotated.

The support structure in the sitting tool with an auxiliary mechanism of the present invention has the following effects.
(1) Since the seating tool can be rotated by separating the base from the seating tool installation surface and grounding the rotating body to the installation surface, the orientation can be easily changed.
(2) Since the seating tool is supported so as not to rotate by separating the rotating body from the installation surface and grounding the base to the installation surface, the standing from the seating tool and the seating on the seating tool are stabilized.
(3) Since it can change according to a situation whether it supports in a rotatable state or it supports in a non-rotatable state, it is convenient.
(4) Since it can be switched between non-rotatable and non-rotatable only by the raising / lowering operation of the standing assist mechanism, anyone can handle it easily.

The operation of the sitting tool with an auxiliary mechanism of the present invention is shown, wherein (a) is a side explanatory view in a state where the sitting tool is at the lowest position (lowest position), and (b) is a seat unit horizontally. Side explanatory drawing in the middle of a raise, (c) is a schematic explanatory drawing of the state which the seat part unit inclined forward. Assembly explanatory drawing which shows an example of the seating tool with an auxiliary mechanism of this invention. The side view which shows an example of the seating tool with an auxiliary mechanism of this invention, Comprising: A rotary body is earth | grounded to the installation surface of a seating tool, a base is separated from the installation surface, and the seating tool can be rotated. The side view of the state which showed an example of the seating tool with an auxiliary mechanism of this invention, raised the seat part unit and inclined the seat part unit forward. An example of the seating tool with an auxiliary mechanism of the present invention is shown, (a) is a rear perspective view in a state where the seating tool does not rotate, and (b) is a rear perspective view in a state in which the seat unit is raised.

  An example of an embodiment of a seating tool with an auxiliary mechanism of the present invention (hereinafter simply referred to as “sitting tool”) will be described with reference to FIGS. The sitting tool 1 of the present invention includes a sitting chair, a chair for a table (in addition to a table chair, a desk chair, etc .; hereinafter, these are collectively referred to as a “table chair”), and various forms of sitting tools such as a sofa. In the following description, a seat chair will be described as an example. The seating tool 1 of the present invention includes a stand-up assisting mechanism 2 that assists a seated person to stand up, and a direction changing mechanism 3 that changes the orientation of the seated person so that the seating person can easily get down in a desired direction when the seating person gets off the seating tool (hereinafter referred to as a seating tool). , Including both mechanisms) may be provided with both or any one of them, but FIGS. 1 (a) to 1 (c) are not provided with the direction changing function 3 as an example, and the standing assist mechanism. 2 to 4 show the sitting tool 1 having both the standing assist mechanism 2 and the direction changing mechanism 3. The seating tool 1 shown in FIGS. 5 (a) and 5 (b) is provided with both the standing assist mechanism 2 and the orientation changing mechanism 3, but the orientation changing mechanism 3 is provided on the back of the seat unit 10. It does not appear on the drawing.

[Operation overview]
In the case of the sitting tool 1 that does not include the orientation changing mechanism shown in FIG. 1, the seat unit 10 is moved to the floor, tatami mat, flooring, etc. (hereinafter these are collectively referred to as “installation surface”) as shown in FIG. By lowering, it can be used in the same way as a normal seat. When a person sitting on the seat unit 10 stands, the standing assist mechanism 2 is operated to raise the seat unit 10 in a horizontal state as shown in FIG. When the seat unit 10 is raised to a desired position, the seat unit 10 is tilted forward as shown in FIG. 1C so that the seated person can stand up from the seat unit 10.

  When a person standing upside down in the sitting tool 1 sits down, as shown in FIG. 1 (c), after sitting down on the seat unit 10 tilted forward, the standing assist mechanism 2 To return the seat unit 10 to the horizontal position. When the seat unit 10 returns to the horizontal position, the seat unit 10 descends to the position shown in FIG. 1A while being in a horizontal state as shown in FIG. The seating can be assisted.

  In the case of the sitting tool 1 provided with the orientation changing mechanism 3 shown in FIGS. 2 to 4, the seat portion is operated by operating the orientation changing mechanism 3 with the seat unit 10 descending to the installation surface as shown in FIG. 3. The sitting tool 1 including the unit 10 can be rotated to a desired direction. After the seating tool 1 is rotated to a desired direction, the seat unit 10 is raised as shown in FIG. 1B by operating the standing assist mechanism 2, and the seat unit 10 is raised to a desired height. The seat unit 10 can be tilted forward as shown in FIG.

  In the sitting tool 1 provided with the orientation changing mechanism 3, when a person standing upside down stands, sit on the seat unit 10 tilted forward as shown in FIG. 1 (c). After being lowered, the standing assist mechanism 2 is operated to return the seat unit 10 to the horizontal position. Thereafter, as shown in FIG. 1B, the seat unit 10 is lowered to the floor in a horizontal state. Thereafter, when the seating tool 1 is rotated by the operation of the direction changing mechanism 3, the seated person can be in a desired direction.

  The operation of the standing assist mechanism 2 can be performed by the controller 54 (FIGS. 5A and 5B). However, when the seating tool 1 includes an operation panel, the operation can be performed by operating the operation panel. The above description is for the case where the seated person arbitrarily operates the height and the rotation angle. However, if possible, once the remote controller or the operation panel is operated, the seat unit 10 is raised, lowered, tilted backward (returned). Alternatively, the rotation of the sitting tool 1 can be automatically performed according to preset conditions.

[Description of mechanism]
As shown in FIG. 2, the seating tool 1 shown in FIGS. 2 to 5 is provided between the base 20, the seat unit 10, and the base 20 and the seat unit 10, and raises and lowers the seat unit 10. The standing assistance mechanism 2, the direction changing mechanism 3 provided under the standing assistance mechanism 2 to rotate the seating tool 1, and provided on the back surface of the standing assistance mechanism 2 to raise, lower, forward and return the standing assistance mechanism 2. A drive mechanism 30 to be performed and a power source (motor) M of the drive mechanism 30 are provided.

[base]
As shown in FIG. 2, the base 20 has a U-shaped front opening with two support legs 21a and 21b extending in the front-rear direction and a leg connecting member 22 connecting the rear sides of the support legs 21a and 21b. Is formed. Near the center of the leg connecting member 22, a pair of two motor mounts 23a, 23b are erected, and arm supports 24 are erected on both ends of the leg connecting member 22 in the longitudinal direction. A plurality of arm holding pieces 24a and 24b are arranged to face each other. A rear end portion 31c of the side frame 31 shown in FIG. 2 is disposed between the arm holding pieces 24a and 24b of the two arm mounts 24, and is supported by a support shaft (not shown) so as to be rotatable around the shaft. .

  A back frame 25 that protrudes upward and supports the back side is provided on the back side of the both arm mounts 24 and has a U-shaped back support 26 (see FIG. 5 (FIG. 5)) that supports the back side of the sitting tool 1. a) and (b)) are supported. A longitudinally long opening (not shown) is provided at the center in the width direction on the back side of the back support 26, and the opening is closed by a cover 27. The lower end side of the cover 27 is connected to a power source (motor) M of the drive mechanism 30 so that the cover 27 tilts backward as the screw shaft 62 and the case 63 are tilted later.

  A flat plate-like back material 28 is provided on the inner side (front side) of the back support 26, and a head portion 29 for supporting the seated person's head is provided on the upper end side thereof.

  Caster mounting brackets 44a and 44b project from both ends of the leg connecting member 22 in the longitudinal direction, and a moving caster 44 is provided thereon. The caster 44 may be provided with a stopper or may be provided with no stopper. The caster 44 may not be provided.

[Seat unit]
The seat unit 10 includes a seat frame 11 and a seat body 12 attached to the upper surface of the seat frame 11. The seat body 12 is provided with a seating portion 12a and a backrest portion 12b in the same manner as a seat for a normal seat, and a cushion material is built in the outer skin. The seat body 12 is screwed onto the seat frame 11.

  The seat frame 11 includes a rear fixing portion 13 that is fixed to the rear side of the bottom surface of the seat unit 10 with a screw, a front fixing portion 14 that is fixed to the front side of the bottom surface of the seat unit 10 with a screw, a rear fixing portion 13 and a front side. Two connecting portions 15 that connect the fixed portions 14 are provided.

  A vertical arm 16 protrudes upward in a U-shape at both ends in the width direction of the rear fixing portion 13. The interval between the two vertical arms 16 is wider than the width of the seat unit 10 so that the seat unit 10 can be disposed between the two vertical arms 16. It protrudes outward in the width direction.

  A plate 17 is attached to the upper ends of both the vertical arms 16 so as to be rotatable (can be flipped up) about its axis by a connecting shaft. By attaching an armrest 18 (FIG. 3) to this plate 17, the armrest 18 (FIG. 4) can be flipped up in the direction of arrow A or returned in the direction of arrow B. The armrest 18 may not be provided. Guide grooves 19 that are U-shaped in side view are provided at both ends in the longitudinal direction of the front fixing portion 14.

  The seat frame 11 fixed to the bottom surface of the seat unit 10 is disposed on the seat mounting bracket 37 shown in FIG. In this case, the seat receiving bar 42 shown in FIG.

[Standing assist mechanism]
As shown in FIG. 2, the standing assist mechanism 2 includes a side frame 31 in which the front end side of the upper frame 31 a and the lower frame 31 b that are arranged and connected to each other is connected by a connecting piece 32. The connecting pieces 32 of the respective side frames 31 are connected by connecting bars 33, and the front end sides of the upper frames 31 a of both side frames 31 are connected by seat receiving bars 42. Two rails 34 are connected in parallel behind the connecting bar 33 and inside the side frame 31. The rear end sides of the two rails 34 are connected by a rear connection bar 43.

  Two motor hangers 35 are raised above the rear connection bar 43. The upper part of the motor hanger 35 is bent backward in an L shape. Two movable arms 36 project from the lower end sides of both motor hangers 35, and the tips of both movable arms 36 are connected by a downward U-shaped seat mounting bracket 37.

  A distal end side end of a link 38 shorter than the movable arm 36 is rotatably supported on the outer surface (side surface) of both movable arms 36, and a roller 39 is rotatably supported by a support shaft 40 on the opposite end portion. It is supported by. The roller 39 is disposed on the rail 34 and is rotatable on the rail 34.

  The upper end portion of the tilt pull rod 41 is disposed outside each roller 39 and is connected to the support shaft 40. The lower end portion of the tilt pull rod 41 is pivotally supported on the outer lower frame 31b.

[Drive mechanism]
The drive mechanism 30 shown in FIG. 2 includes an actuator 61 rotated by the motor M, a screw shaft (ball screw) 62 rotated by the actuator 61, and the screw shaft 62 ascends along the screw shaft 62 due to the rotation of the screw shaft 62. A moving body 64 that descends along the screw shaft 62 by reverse rotation is provided. The screw shaft 62 is covered with a rectangular tubular case 63 having a side opening.

  When the motor M is driven, the drive mechanism 30 (the actuator 61, the screw shaft 62, the case 63, and the moving body 64) tilts backward with the motor mount 23 as a rotation axis. As described above, the back support 26 provided on the back side of the drive mechanism 30 is provided with a vertically long opening (not shown), and the opening is closed by the cover 27. As described above, the cover 27 is attached to the motor mount 23 so as to be tilted backward, so that the drive mechanism 30 does not contact the cover 27 even when the drive mechanism 30 tilts backward.

  The actuator 61 shown in FIG. 2 is an example, and other mechanisms such as a pinion rack or other mechanisms can be used as long as they have the same effects.

  The actuator 61 is disposed between the motor mounts 23a and 23b and is attached to the motor mounts 23a and 23b by pins (not shown) so as to rotate around the pins. The moving body 64 is disposed between the two motor hangers 35 shown in FIG. 2 and screwed so that the motor hanger 35 moves up and down as the moving body 64 moves up and down.

[Orientation change mechanism]
A rotating body 50 shown in FIG. 2 is used for the direction changing mechanism 3. For example, a bearing plate can be used for the rotating body 50. As an example, the bearing plate shown in FIG. 2 is a general-purpose one, and a large number of rolling elements 53 (FIG. 4) are provided between the upper movable portion 51 and the lower movable portion 52 facing each other and on the outer periphery of the center portion of both plates. They are arranged concentrically so that the upper movable part 51 and the lower movable part 52 can rotate separately. The rotating body 50 can be provided with a stopper (not shown) to limit the rotation angle. The upper movable portion 51 of the rotating body 50 is attached to the bottom surfaces of the two rails 34. This bearing plate is an example, and a bearing having a structure other than this, or another rotating mechanism can be used as long as the same effect as the bearing plate can be obtained.

[Power supply]
The seating tool 1 of the present invention can be operated by a commercial power source or can be operated by a battery. When a commercial power source is used, the power cord C is pulled out from the back side of the seating tool 1 as shown in FIGS. In this case, the coil spring S can be provided at the base of the power cord C to prevent the power cord C from being caught. When using a battery, for example, it is desirable to mount a secondary battery such as a lithium ion battery in an arbitrary space of the seating tool 1 so that it can be charged as necessary.

[operation]
Each operation such as raising / lowering, forward tilting, and backward tilting (returning) of the seat unit 10 can be operated by a wired controller 54 shown in FIGS. 5A and 5B, a wireless remote controller (not shown), or the like. In addition, an operation means such as an operation panel can be mounted on the sitting tool, and the operation can be performed using the operation panel.

[Details of operation]
Hereinafter, details of the operation of the sitting tool 1 of the present invention will be described in the order of ascending and forward tilting of the seat unit 10, backward tilting (returning) and lowering of the seat unit 10, and rotation and fixing of the seating tool 1.

(The seat unit rises and leans forward)
(1) The raising button 54a of the controller 54 is turned on to operate the motor M, and the actuator 61 is driven by the driving force. By driving the actuator 61, the screw shaft 62 rotates, and the moving body 64 moves up along the screw shaft 62.
(2) As the moving body 64 is raised, the motor hanger 35 connected to the moving body 64 is raised, and the rail 34 connected to the motor hanger 35 and the connecting bar 33 connected to the rail 34 are raised.
(3) Since the connection piece 32 holding the front side of the side frame 31 is connected to both ends of the connection bar 33, the front side of the side frame 31 rises as the connection bar 33 rises. Since the rear end portion 31 c of the side frame 31 is pivotally supported by the arm mount 24, the side frame 31 rises in a circle with the mounting shaft of the arm mount 24 as a rotation axis.
(4) When the side frame 31 rises in a circle, the motor hanger 35 and the movable arm 36 are pushed backward, and accordingly, the roller 39 rolls on the rail 34 and moves forward.
(5) As the roller 39 moves, the link 38 rises vertically or substantially perpendicular to the installation surface as shown in FIG. 1C, and the seat mounting bracket 37 connected to the link 38 is pushed up.
(6) When the seat mounting bracket 37 is pushed up, the rear fixing portion 13 of the seat frame 11 attached thereto is lifted, and the seat unit 10 is tilted forward to a preset angle (FIG. 4).

  The seat unit 10 of the present invention can be tilted forward during its ascent or before ascent, but it is preferable that the seat unit 10 is tilted forward after ascending to the top from the viewpoint of safety.

(Backward tilt (return) and lowering of the seat unit)
(1) The descent button 54b of the controller 54 is turned on to operate the motor M, and the actuator 61 is driven. By driving the actuator 61, the screw shaft 62 rotates in the direction opposite to the upward movement, and the moving body 64 moves down along the screw shaft 62.
(2) When the moving body 64 starts to descend, the roller 39 moves rearward on the rail 34, the seat mounting bracket 37 is pulled back, and the seat unit 10 is returned to the original position (shown in FIG. 1B). Return to the horizontal position.
(3) When the seat unit 10 returns to the original position, the rail 34 connected to the motor hanger 35 and the connecting bar 33 connected to the rail 34 start to descend.
(4) When the connecting bar 33 starts to descend, the front side of the side frame 31 held by the connecting pieces 32 provided at both ends of the connecting bar 33 descends. Since one end side of the side frame 31 is pivotally supported by the arm mount 24, the side frame 31 descends in a circle with the arm mount 24 side as a rotation axis.
(5) Along with this, the seat unit 10 descends while maintaining a horizontal state. The seat unit 10 can be lowered until the base 20 or the rotating body 50 contacts the installation surface.

  The seat unit 10 can be tilted backwards (returns to the original position) during the lowering or after being lowered to the lowest position, but from the viewpoint of safety, the seating unit 10 is tilted backwards before starting the lowering. (Return to the original position) is preferable.

  The seating tool 1 of the present invention can be used as a seat chair or a table chair by changing the height of the seat unit 10. For example, if the seat unit 10 is lowered to the lowest position or a position close to it, it can be used as a seat chair, and if the seat unit 10 is set to an intermediate position or a position close thereto, it can also be used as a table chair. .

(Rotating and fixing the sitting tool)
(1) In the seating tool of the present invention, when the seat unit 10 is lowered to the lowest position (lowest position) as shown in FIG. Is grounded to the installation surface. Thereby, the upper movable part 51 of the rotary body 50 becomes rotatable, and the seating tool 1 is rotatably supported.
(2) In the seating tool of the present invention, when the seat unit 10 is lifted and the lowest position is removed, the lower movable portion 52 of the rotating body 50 is separated from the installation surface, and the base 20 is grounded to the installation surface. I have to do it. Thereby, the seating tool 1 is supported in a fixed state without rotating.

  The structure in the said embodiment is an example, and can also be set as another structure, as long as raising / lowering of a seat part unit and rotation and fixing of a seating tool are possible. In addition, the description of the operation in the present embodiment is an example when the sitting tool has the above-described structure, and the operation may be performed according to a procedure other than the above.

  The seating tool and its support structure (direction changing mechanism) of the present invention can be used as a structure for supporting various seating tools. In particular, the sitting device having the support structure is used as various sitting devices used in hospitals (including dental clinics and ophthalmology clinics) and nursing homes as well as sitting chairs generally used in the home. be able to.

1 Seating tool with auxiliary mechanism (sitting tool)
DESCRIPTION OF SYMBOLS 2 Standing assistance mechanism 3 Direction change mechanism 10 Seat part unit 11 Seat frame 12 Seat body 12a Seating part 12b Backrest part 13 Back fixing part 14 Front fixing part 15 Connection part 16 Vertical arm 17 Plate 18 Armrest 19 Guide groove 20 Base 21a, 21b Support leg 22 Leg connecting member 23, 23a, 23b Motor mount 24 Arm mount 24a, 24b Arm holding piece 25 Back frame 26 Back support 27 Cover 28 Back material 29 Head section 30 Drive mechanism 31 Side frame 31a Upper frame 31b Lower Side frame 31c Rear end 32 Connecting piece 33 Connecting bar 34 Rail 35 Motor hanger 36 Movable arm 37 Seat mounting bracket 38 Link 39 Roller 40 Support shaft 41 Tilt pull rod 42 Seat receiving bar 43 Rear connecting bar 44 Caster 44a, 44b Caster mounting bracket 50 Rotating body 51 Upper movable part 52 Lower movable part 53 Rolling body 54 Controller 54a Up button 54b Down button 61 Actuator 62 Screw shaft 63 Case 64 Moving body C Power cord M Power source (motor)
S Coil spring

Claims (4)

In a sitting tool provided with a seat unit on which a seated person can sit,
And standing assist mechanism for assisting the standing of the seated person to the seat unit, and a driving mechanism for vertically driving the standing assist mechanism, the seated person orientation by rotating the seat unit is seated on the seat unit It has a direction change mechanism that can be changed, and a base that can be installed on the seating surface.
The standing assist mechanism is provided under the seat unit,
The drive mechanism is provided on the back side of the standing assist mechanism,
The drive mechanism includes a moving body that can be moved up and down in the axial direction of the rotation shaft by rotation of the rotation shaft;
The standing-up assist mechanism includes several links, the leading ends of some of the links are connected to the seat unit, the rear ends of the other links are connected to the base, and the other one is connected. When the rear end side of the link is connected to the moving body and the moving body is raised by the rotation of the rotating shaft, the leading end side of several links connected to the seat unit rises to raised, the distal end of several links which are connected to the seat unit and the mobile drops is lowered it is possible to lower the said seat unit by the reverse rotation of said rotary shaft,
The direction changing mechanism is a rotatable rotating body, the rotating body protrudes below the standing assist mechanism, and can be lifted and lowered as the standing assist mechanism is lifted and lowered.
While the base is in contact with the installation surface, when the drive mechanism lowers the stand-up assist mechanism and grounds the rotating body to the installation surface, the base moves away from the installation surface, and the drive mechanism supports the stand-up assist. When the mechanism is raised and the rotating body is separated from the installation surface, it is installed on the installation surface,
The rotating body contacts the installation surface and supports the seat unit rotatably when the base leaves the installation surface, and does not rotate the seat unit away from the installation surface when the base contacts the installation surface. Like that,
A seating tool with an auxiliary mechanism. The sitting tool with an auxiliary mechanism according to claim 1,
The drive mechanism can tilt the standing assist mechanism forward to tilt the seat unit coupled to the standing assist mechanism, and can tilt the standing assist mechanism backward to couple the seat assist unit to the standing assist mechanism. Can be tilted backwards,
A seating tool with an auxiliary mechanism. The sitting tool with an auxiliary mechanism according to claim 1 or 2,
A stopper is provided on the rotating body to limit the rotation angle of the rotating body.
A seating tool with an auxiliary mechanism. The sitting tool with an auxiliary mechanism according to any one of claims 1 to 3,
The seat unit is equipped with an armrest,
A seating tool with an auxiliary mechanism.

Images