JP4855804B2 - Stair lift seating device - Google Patents

Description

  The present invention relates to an improvement of a seating device mounted on a stair lift that moves up and down along a staircase of a building.

  FIG. 7 is a perspective view showing a stair lift 2 equipped with a seating device 1 of the prior art, and this prior art is described in Patent Document 1. In a building 3 such as a welfare facility or household, a wall 7 facing the stairs 6 is provided on a wall 7 facing a staircase 6 in order to support users such as elderly people, sick people, and disabled people to move between the lower floor 4 and the upper floor 5. A stair lift 2 is installed.

  The stair lift 2 includes two guide rails 8 provided in parallel along the staircase 6 on a wall 7 facing the staircase 6, and a lift main body 9 that travels in the ascending direction A1 and the descending direction A2 along the guide rail 8. And a seating device 1 mounted on the elevator body 9.

  The seating device 1 includes a seat plate 11 on which a user sits, a back plate 12 that rises upward from one side of the seat plate 11 near the wall 7 and supports the user's back, and left and right sides of the seat plate 11. It has a pair of armrests 13a and 13b with base ends rotatably connected to both sides. The seat plate 11, the back plate 12, and the pair of armrests 13 a and 13 b are attached to a base 14 fixed to the upper part of the elevator body 9.

  The lower end of the back plate 12 is fixed to the base 14, and the seat plate 11 and the armrests 13a and 13b are connected to each other so as to be rotatable about the substantially horizontal axis L1 in the directions of arrows B1 and B2. When the stair lift 2 is not used, the seat plate 11 and the armrests 13a and 13b are rotated in the direction of the arrow B1 close to the back plate 12 and retracted so that the passage of the staircase 6 is not obstructed.

  Since the user of the stair lift 2 is an elderly person, a sick person, a disabled person, or the like who cannot easily lift the stair 6 by himself, the user may inadvertently move the body from the seating device 1 during the movement. There is a problem that the user or his / her caregiver must pay close attention until the lifting / lowering operation is completed so that the user's body is not displaced from the seating device 1 and the stable posture is maintained. There is.

  Another conventional technique for solving such a problem is described in Patent Document 2. In this prior art, a seat belt is provided on the back plate in order to prevent the user's body of the stair lift from being displaced from the seating device during the lift. The back plate is configured by a seat portion that supports the back portion of the user and an inverted U-shaped hand-held pipe that surrounds the seat portion, and a base end portion of the seat belt is attached to the hand-held pipe, By wearing the seat belt on the user's body seated on the seating device, the user's body is prevented from being inadvertently displaced during elevation.

JP 2004-16739 A JP 2004-307206 A

  In the prior art described in the above-mentioned Patent Document 2, a seat belt is provided on the back plate so that the body of the seated user does not shift during ascent and descent, but in a state where the user wears this seat belt, Only the user's torso is restrained by the seat belt, and both legs are not restrained. Therefore, if the user is a disabled person who cannot control both legs or one leg with his / her own intention due to movement disorders, the user's legs fall from the seating device to the stairs side and the posture is unstable. There is a problem of becoming.

  An object of the present invention is to provide a seating device for a stair lift that can prevent the user's inadvertent displacement of the legs, stably maintain the posture of the user, and improve safety during ascent and descent. It is.

The present invention relates to a staircase in which a seat plate on which a user is seated and a back plate that supports the back of the user are mounted on an elevator body that runs along a guide rail installed on a staircase or a wall facing the staircase. In the elevator seating device,
A base fixed to the upper part of the elevator body;
A seat plate provided on the base so as to be rotatable about a substantially horizontal first axis between a substantially horizontal seating position and a substantially vertical retracted position;
A back plate provided on the base so as to face the seat plate disposed at the retracted position;
A first belt portion connected to one side portion of the base so that a base end portion thereof is rotatable around a second axis substantially parallel to the first axis;
A second belt portion connected to the other side portion of the base so that a base end portion is rotatable around a third axis substantially parallel to the first axis;
Connecting means for connecting the first belt portion and the second belt portion to each other and releasing the connection state;
When the first and second belt portions rotate about the second and third axes in the direction of approaching the back plate, the displacement of the first belt portion is closer to the seat plate than the vertical virtual plane including the rotation center. A seating device for a stair lift, comprising upper limit limiting means for blocking at a predetermined upper limit position in the vicinity of the inclined back plate.

  According to the present invention, a stair lift is installed in the staircase of buildings such as houses and nursing homes. The stair lift is configured such that a guide rail extending over the lower floor and the upper floor is fixed to a stair or a wall facing the stair, and the lift main body travels along the guide rail. A base is fixed to the upper part of the elevator body, and a base plate and a back plate are provided on the base, and a user sits on the base plate and makes the back abut against the back plate and sits stably. It is possible to move across the lower floor and the upper floor in a state where the belt portions are connected by means and both legs are fixed. In the present invention, the term “leg” refers to a lower limb separated from the trunk or trunk (hereinafter the same).

  The user may be a healthy person, but a physically handicapped person who has a disability in spontaneous movement and a physically handicapped person who has an involuntary movement in which the body moves regardless of the intention of the person. However, it is possible to prevent the legs from moving carelessly while the user is seated, and the seating device according to the present invention can be advantageously implemented. By such first and second belt portions and connection means, both legs of the user can be restrained by the seat plate, and displacement of both legs can be prevented. Moreover, by restraining the displacement of both legs, it is possible to prevent the trunk of the seated user from tilting and to move up and down while maintaining a stable posture.

  A base end portion of the first belt portion is coupled to one side portion of the base so as to be rotatable about a substantially horizontal second axis. Further, a base end portion of the second belt portion is connected to the other side portion of the base so as to be rotatable around a substantially horizontal third axis. The first belt portion and the second belt portion are detachably connected to each other by connecting means. This connecting means may be configured to include, for example, an insertion fitting also called a sluffing provided at the free end of one belt portion and a fastener called a buckle provided at the free end of the other belt portion.

  These first and second belt portions have a vertical virtual displacement that includes a rotation center by the upper limit position limiting means when the rotation displacement when rotating in the direction of approaching the back plate around the second and third axes. It is blocked at a predetermined upper limit position in the vicinity of the back plate inclined to the seat plate side with respect to the plane.

  Thus, the first and second belt portions are close to the seat plate from the upper limit position because the upper limit positions of the first and second belt portions are inclined toward the seat plate side with respect to the vertical virtual plane. It can be rotated around the second axis by its own weight together with the connecting means in the direction to be moved, and can be returned from the retracted position retracted in the vicinity of the back plate to the use position on the seat plate side arranged at the seating position.

  As a configuration for rotating the first and second belt portions from the use position to the retracted position, the width of the seat plate is made larger than the interval between the first and second belt portions, and the seat plate is moved to the first position. The first and second belt portions may be pressed in the direction close to the back plate by the seat plate by rotating around the axis in the direction close to the back plate and retracting from the use position, or the seat When a member for pressing the first and second belt portions toward the back plate is separately provided on both sides of the plate, and the seat plate is rotated in the direction close to the back plate around the first axis, A member for pressing contacts the first and second belt portions from the downstream side in the rotational direction of the seat plate to press the first and second belt portions toward the back plate side, and the seat plate is closest to the back plate. When the retracted position is reached, the first and second belt parts are It may be reached position.

  As described above, the seat plate is provided so as to be rotatable around the first axis with respect to the base. Therefore, when the stair lift is not used, the seat plate is removed from the region used for walking up and down the stairs. Occurrence of the problem that the space used for raising and lowering the stairs is reduced and the area occupied by the stairs elevator is reduced, and the area used for raising and lowering the stairs is reduced even though the stairs elevator is not used. Can be prevented.

  Further, the present invention provides a rotational displacement when the first and second belt portions are rotated around the second and third axes in a direction approaching a seat plate disposed at the seating position. It includes a lower limit position limiting means for blocking at a predetermined lower limit position inclined to the back plate side with respect to a horizontal virtual plane including.

  According to the present invention, the first and second belt portions are the second and second belt portions in the state where the seat plate is placed in the seating position by being rotated around the first axis from the state where the seat plate stands close to the back plate. Even if it rotates in the direction of approaching the seat plate around the three axes, the rotational displacement is blocked by the lower limit position limiting means, and the seat plate is inclined more than the horizontal virtual plane including the center of rotation. It is possible to prevent the sagging from hanging below a predetermined lower limit position, and the first and second belt portions can be easily mounted when the user is seated.

  Furthermore, the present invention is characterized in that the back plate has a retracting portion that is retracted in a direction close to each other facing a rotation path when the first and second belt portions rotate around the second axis. And

  According to the present invention, the back plate has a retracting portion that retracts in a direction close to each other facing a rotation path when the first and second belt portions rotate around the second and third axes. Therefore, when the first and second belt portions are disposed at the upper limit position, the first and second belt portions are prevented from interfering with the back plate, and are substantially horizontal from the retracted position where the seat plate is raised during use. The first and second belt portions rotate in the direction approaching the seat plate due to their own weight when rotated toward the proper seating position, and can be reliably returned to the use position without requiring manual operation. it can.

  According to the present invention, the base is provided with the first and second belt portions, and each belt portion is detachably connected by the connecting means, so that each belt is in a state where the user is seated on the seat plate at the time of use. By connecting the parts with the connecting means, the displacement of the user's leg may be restrained, and the user's leg may be inadvertently separated from the elevator body and detached from the steps provided on the elevator body. It is prevented.

  The seat plate is provided so as to be rotatable around the first axis, and the base end portions of the first and second belt portions are provided on both sides of the base so as to be rotatable around the second and third axes. The upper limit positions of the first and second belt portions are limited by the upper limit position limiting means to a position inclined to the seat plate side with respect to the vertical virtual plane including the rotation center. When moved from the retracted state toward the back plate to the seating position, the first and second belt portions together with the connecting means are prevented from moving at the upper limit position, and when the seat plate is returned to the seating position again, the first and second belt portions And the 2nd belt part can be reliably returned to the seat board side with dead weight with a connection means.

  According to the present invention, even if the first and second belt portions are rotated about the second and third axes in the direction approaching the seat plate, the rotational displacement is prevented by the lower limit position limiting means, and the lower limit The first and second belt portions can be easily mounted when the user is seated, while preventing the user from turning and dropping over the position.

  Further, according to the present invention, since the back plate has the retracting portion, the first and second belt portions are prevented from interfering with the back plate, and the seat plate is raised from the retracted position toward the seating position. When it is rotated, it can be reliably returned to the lower limit position.

  FIG. 1 is a cross-sectional view of a seating device 21 of a stair lift 20 according to an embodiment of the present invention as viewed from the upper floor 5 side. As described with reference to FIG. 7 described above, the seating device 21 of the present embodiment has a substantially vertical wall 7 facing the stairs 6 between the lower floor 4 and the upper floor 5 of the building 3 such as a house and nursing home. For moving between the lower floor 5 and the upper floor 6 with the user seated on the elevator body 9 that moves in the direction of arrows A1 and A2 along two parallel guide rails 8 fixed to Used for. The pair of guide rails 8, the elevator main body 9, and the seating device 21 constitute a stair elevator 20.

  The user of the stair lift 20 may be a healthy person, but is accompanied by an involuntary movement in which the body moves without depending on the intention of the person and a physically handicapped person who has a disability in spontaneous movement. Targeting non-healthy people with physical disabilities at least in the lower limbs, such as physically disabled people.

  The seating device 21 is connected to a base 23 fixed to the horizontal upper surface 22 of the elevator body 9 and to the base 23 so as to be rotatable in the directions of arrows B1 and B2 around a horizontal first axis L1. A seat plate 24 on which a user sits, and one end in the width direction perpendicular to the paper surface of FIG. 1 of the base 23, are rotated around arrows C1 and C2 around a second axis L2 substantially parallel to the first axis L1. A first belt portion 25 that is movably connected, and arrows C1, C2 around a third axis L3 that is substantially parallel to the first axis L1 at the other end in the width direction perpendicular to the paper surface of FIG. Near the wall 7 of the base 23, the second belt portion 26 that is pivotally connected in the direction, the connection means 27 that connects the first and second belt portions 25, 26 to each other and releases the connection state. A lower plate is connected to the side of the back plate 28, supporting the back of the user, a first plate and Upper limit restricting means 29 for preventing the rotational displacement when the two belt portions 25, 26 are rotated about the respective axes L2, L3 in the direction C1 approaching the back plate 28 at the upper limit position indicated by the virtual lines 25a, 26a. And a pair of armrest members 31 and 32 pivotally supported at both ends in the width direction of the base 23 so as to be rotatable in the directions of arrows B1 and B2 around the first axis L1 on both sides in the width direction of the seat plate 24; including.

  The elevator body 9 is composed of a plurality of rollers (not shown) that sandwich the guide rails 8 from both the upper and lower sides, and a rotation drive source that selectively rotates each roller in either the ascending direction or the descending direction. The lift drive device is built-in. The rotational drive source includes an electric motor and a speed reducer that decelerates the rotation of the electric motor to a predetermined rotational speed, and transmits the rotational force decelerated by the speed reducer to a plurality of rollers disposed above each guide rail 8. And it is comprised so that it can drive | work to the arrow A1, A2 direction along each guide rail 8. As shown in FIG.

  The upper limit position of the first and second belt portions 25 and 26 is determined by the upper limit restricting means 29 so that the upper limit position of the first belt portion 25 and the second belt portion 25 and the second belt portion 25 and 26 is 7 Is selected as an angular position that forms a predetermined first angle θ1 in the direction C2 from which the free end portion is separated. The first angle θ1 is selected to be 5 ° or more and 10 ° or less. Further, the lower limit positions of the first and second belt portions 25 and 26 are selected as angular positions that form a predetermined second angle θ2 in the direction C2 in which the free end portion is separated from the wall 7 with respect to the upper limit position. The second angle θ2 is selected to be not less than 25 ° and not more than 30 °, and θ1 + θ2 with reference to a vertical virtual plane, and not less than 30 ° and not more than 40 °.

  By selecting the lower limit positions of the first and second belt portions 25 and 26 in this way, as described later with reference to FIG. It is restrained by the connecting means 27 to prevent both legs from being inadvertently opened during the lifting and detaching from the step part 39 of the elevator body, and the disabled person who has a disorder in stable spontaneous movement and Even a physically handicapped person who is accompanied by an involuntary movement in which the body exercises regardless of the intention of the person, can safely move up and down while maintaining a stable posture.

  FIG. 2 is a rear view of the seating device 21 as viewed from the left in FIG. Referring also to FIG. 1, the base 23 is detachably attached to the upper surface 22 of the elevator body 9 by a plurality of fastening members such as bolts so that the longitudinal direction thereof is parallel to the first axis L1. Hollow frame member 40 made of metal and a pair of side plates that are fixed to both ends in the longitudinal direction of the hollow frame member 40 by welding and rise to a height position facing the side surfaces 41 and 42 on both sides in the width direction of the seat plate 24 43, 44, a first connecting body 45 for rotatably connecting the first belt portion 25 to the hollow frame member 40, and a second for rotatably connecting the second belt portion 26 to the hollow frame member 40. And a connecting body 46.

  In the longitudinal direction intermediate portion of the hollow frame member 40 of the base 23, both end portions 48a and 48b of a metal pipe back plate frame member 48 from which the first belt portion 25 protrudes from the lower end portion of the back plate 28 are provided. It is fixed by welding. A pivot 47 for pivotally supporting the seat plate 24 and the armrest members 31 and 32 about the first axis L1 is inserted and fixed to the side plates 43 and 44, respectively. As described above, the seat plate 24 and the armrest members 31 and 32 can be rotated in the directions of the arrows B1 and B2 with the first axis L1 as a common rotation axis, so when the stair lift 20 is not used, a virtual line As shown by 24a, 31a, and 32a, it can displace to the wall 7 side rather than the elevator main body 9, and can evacuate to the position which does not interfere with the raising / lowering by the walk of the stairs 6. FIG. Between the lower end portion of the back plate 28 and the seat plate 24, a seat plate auxiliary pad 49 is provided across both end portions 48 a and 48 b of the back plate frame member 48.

  The first connecting body 45 includes a first bracket 50 fixed to the hollow frame member 40, and a first swing arm 51 connected to the first bracket 50 so as to be angularly displaceable about the fourth axis L4. A proximal end portion of the first belt portion 25 is connected to a distal end portion of the first swing arm 51 so as to be rotatable around the second axis L2. The second connecting body 46 includes a second bracket 52 fixed to the hollow frame member 40, and a second swing arm 53 connected to the second bracket 52 so as to be angularly displaceable about the fifth axis L5. A proximal end portion of the second belt portion 26 is connected to a distal end portion of the second swing arm 53 so as to be rotatable around a third axis L3.

  The connecting means 27 includes a fastener 60 called a buckle connected to the free end portion of the first belt portion 25, a winder 61 attached to the free end portion of the second belt portion 26, and the winder 61 It has a seat belt 62 accommodated in a state of being wound inside, and an insertion tool 63 also called a “sluffing” attached to the front end portion of the seat belt 62.

  The winder 61 winds the seat belt 62 in the casing 64 by a spring force in the wind direction D1, and pulls the insertion tool 63 protruding from the casing 64 in the pull direction D2 against the spring force. The seat belt 62 is pulled out from the casing 64, stretched so as to cover the vicinity of the base of the thigh of the user's legs from above, and the insertion tool 63 is inserted into the fastener 60, whereby the insertion tool 63 is attached to the fastener 60. It is locked and both legs can be restrained with moderate tension. The fastener 60 has a lock release piece 66. By pressing the lock release piece 66, the locking state of the insertion tool 63 by the fastener 60 can be released. When the locking state of the insertion tool 63 by the fastener 60 is released in this way, the seat belt 62 is wound into the winding tool 61, and the insertion tool 63 and the seat belt 62 are suspended from the seat plate 24. Is prevented.

  Thus, since the connecting means 27 is provided at the free end portions of the first and second belt portions 25 and 26, the lower portion of the back plate 28 is retracted by being bent in a convex manner in a direction close to each other. Portions 68 and 69 are formed. When viewed from the back side, the lower portion of the back plate 28 increases in width as it goes upward from the lower end portion, and the vicinity of the height position of the armrest members 31 and 32 is the widest, and the upper portion is convexly curved upward. It is formed in a fan shape.

  Since the back plate 28 has one retracting portion 68, a rotation path around the second axis L2 of the first belt portion 25 and the fastener 60 is secured, and the first belt portion 25 and the fastener 60 are raised. In addition, it is possible to avoid the first belt portion 25 and the fastener 60 from interfering with the back plate 28. Further, since the back plate 28 has the other retracting portion 69, a rotation path around the third axis L3 of the second belt portion 26 and the insertion tool 63 is secured, and the second belt portion 26 and the insertion tool 63 are raised. Even if it makes it do, it can avoid that the 2nd belt part 26 and the insertion tool 63 interfere with the backplate 28. FIG.

  Further, since the rotation path of the first belt portion 25 and the fastener 60 is set slightly closer to the other side surface 42 than the one side surface 41 of the seat plate 24, the first belt portion is connected to one armrest member 31. 25 and the fastener 60 are prevented from interfering with each other. Further, since the rotation path of the second belt portion 26 and the insertion tool 63 is set slightly closer to the one side surface 41 than the other side surface 42 of the seat plate 24, the second belt portion is connected to the other armrest member 32. 26 and the insertion tool 63 are prevented from interfering with each other. Thus, the back plate 28, the first belt portion 25, the one armrest member 31 and the fastener 60 are prevented from interfering with each other, and the backplate 28, the second belt portion 26, the armrest member 32 and the insertion tool 63 are mutually connected. It is configured so that it can be smoothly rotated without interfering with.

  3 is an enlarged cross-sectional view of section E in FIG. 1, FIG. 4 is an enlarged rear view of the first connecting body 45 as viewed from the left in FIG. 3, and FIG. 5 is a cross-sectional line VV in FIG. It is sectional drawing seen from. One end of the first swing arm 51 of the first connecting body 45 is connected by a pin bolt 70 so as to be rotatable around the fourth axis L4. The first swing arm 51 is provided with a contact pin 71 for limiting the amount of angular displacement around the fourth axis L4 of the first swing arm 51, and the first bracket 50 is provided with the contact pin 71. A notch 72 is formed to limit the movement range. With the pin bolt 70 loosened, the first swing arm 51 is angularly displaced about the fourth axis L4 to adjust the position of the fastener 60 to the optimum position near the user's waist, and again the pin bolt 70 The first swing arm 51 is fixed to the first bracket 50, and the fastener 60 can be positioned at an appropriate position for the user.

  The fourth axis L4 is inclined toward the wall 3 as it goes upward with respect to a vertical virtual plane including the rotation center of the first belt portion 25. By angularly displacing the first swing arm 51 around the fourth axis L4 as described above, it is possible to place the first swing arm 51 as close as possible to the waist of the user on which the fastener 60 is seated. The fifth axis L5 is inclined toward the wall 3 as it goes upward with respect to a virtual plane including the center of rotation of the second belt portion 26. By angularly displacing the second swing arm 52 around the fifth axis L5 as described above, the winder 61 can be disposed as close as possible to the user's waist. When the insertion tool 63 is pulled out from the winding device 61 arranged in this manner and attached to the fastener 60, the seat belt 62 is wound from the vicinity of the base of the thigh to both sides of the waist, and the displacement of the leg and waist is reduced. It can be blocked to prevent lifting from the seat plate 24 of the buttocks, suppress inadvertent movement of the legs, and also suppress movement of the trunk, thereby stabilizing the posture of the user.

  The free end portion of the first swing arm 51 has a bolt insertion portion 74 through which a pin bolt 73 is inserted in the direction of the second axis L2, and the bolt insertion portion 74 has a contact piece as a lower limit position limiting means. 77 is integrally formed. By this contact piece 77, the horizontal displacement of the first belt portion 25 when the first belt portion 25 rotates about the second axis L2 in the direction C2 approaching the seat plate 24 includes a rotation center. It is possible to block at a predetermined lower limit position inclined more toward the back plate 28 side. Between the pin bolt 73 and the first belt portion 25, there is interposed a straight cylindrical synthetic resin bearing 78 for smoothly rotating the first belt portion 25 around the second axis L2. In order to prevent rattling in the direction along L2, an annular synthetic resin spacer 79 is interposed between the first belt portion 25 and the bolt insertion portion 74, so that the fastener 60 is displaced from the optimum position. Is prevented.

  Referring also to FIG. 2, one end of the second swing arm 52 of the second connecting body 46 is connected by a pin bolt 80 so as to be rotatable around the fifth axis L <b> 5. The second swing arm 52 is provided with a contact pin 81 for limiting an angular displacement amount around the fifth axis L5 of the second swing arm 52, and the second bracket 52 is provided with the contact pin 81. A contact surface 82 for limiting the movement range is formed.

  With the pin bolt 80 loosened, the second swing arm 52 is angularly displaced about the fifth axis L5 to adjust the position of the winder 61 to the optimum position near the user's waist, and again the pin bolt. By tightening 80, the second swing arm 52 can be fixed to the second bracket 52, and the winder 61 can be positioned at an appropriate position for the user.

  The free end portion of the second swing arm 52 has a bolt insertion portion 84 through which a pin bolt 83 is inserted in the direction of the third axis L3. The bolt insertion portion 84 is similar to the contact piece 77 described above. A contact piece 87 which is a lower limit position limiting means is integrally formed. By this contact piece 87, the horizontal displacement of the second belt portion 26 when the second belt portion 26 rotates about the third axis L3 in the direction C2 approaching the seat plate 24 is a horizontal virtual plane including the rotation center. It is possible to block at a predetermined lower limit position inclined more toward the back plate 28 side.

  In such a second connecting body 46, between the pin bolt 83 and the second belt portion 26, the second belt portion 26 is placed between the pin belt 83 and the second belt portion 26 in the same manner as the bearing 78 and the spacer 79 of the first connecting body 45 described above. A bearing for smoothly rotating around L3 and a spacer for preventing rattling in the direction along the third axis L3 are interposed to prevent the insertion tool 61 from being displaced from the optimum position.

  FIG. 6 is a view showing a state in which the user seated on the seating device 21 is wearing the seat belt, and FIG. 6 (1) is a side view of the seating device 21 on which the user is seated as viewed from the left side. 6 (2) is a front view of the seating device 21 on which the user is seated as seen from the front. As described above, since the seating device 21 is mounted on the stair lift 20, the leg portion of the user's thigh or the like is restrained by the seat belt 62, and the user's leg portion is inadvertently displaced during ascent / descent. Therefore, it is possible to maintain a stable posture and improve safety during ascent and descent. Further, since the upper limit positions of the first and second belt portions 25 and 26 are inclined toward the seat plate 24 with respect to the vertical virtual plane, the first and second belt portions 25 are separated from the upper limit position. The side of the seat plate 24 arranged at the seating position from the retracted position retracted in the vicinity of the back plate 28 by rotating around the second and third axes L2 and L3 by its own weight together with the connecting means in the direction close to the seat plate 24. It can be returned to the use position.

  In order to rotate the first and second belt portions 25 and 26 from the use position to the retracted position, the width W1 of the seat plate 24 is set to a width W2 between the first and second belt portions 25 and 26, preferably. Is larger than the width W3 between the fastener 60 and the winder 62, and the seat plate 24 is rotated around the first axis L1 in the direction close to the back plate 28 to be retracted from the use position. Thus, the first and second belt portions 25 and 26 are configured to be pressed by the seat plate 24 in the direction approaching the back plate 28. In another embodiment of the present invention, members for pressing the first and second belt portions 25 and 26 toward the back plate 28 are separately provided on both sides of the seat plate 24, and the seat plate 24 is the first plate. When rotating around the axis L1 in the direction approaching the back plate 28, the pressing member comes into contact with the first and second belt portions 25, 26 from the downstream side in the rotation direction of the seat plate 24. When the first and second belt portions 25, 26 are pressed toward the back plate 28 and the seat plate 24 reaches the retracted position closest to the back plate 28, the first and second belt portions 25, 26 reach the upper limit position. You may make it reach.

  As described above, the seat plate 24 is provided so as to be rotatable about the first axis L1 with respect to the base 23. Therefore, when the stair lift 20 is not used, the seat plate 24 is used to walk up and down the stairs 6. The seat plate 24 is retracted from the area, and the space used for raising and lowering the stairs 6 is reduced by the area occupied by the stairs elevator 20, so that the stairs 6 can be raised and lowered even though the stairs elevator 20 is not used. It is possible to prevent the occurrence of a problem that the area used for the reduction is reduced.

  In the state where the seat plate 24 stands near the back plate 28 and is rotated around the first axis L1 and disposed at the seating position, the first and second belt portions 25, 26 are second. And even if it rotates in the direction of approaching the seat plate 24 around the third axis L3, the rotational displacement is blocked by the abutment piece 77 which is a lower limit position limiting means, and a horizontal virtual including the rotation center. It is possible to prevent the first and second belt portions 25 and 26 from being easily attached when the user is seated by preventing the user from sitting and swinging over a lower limit position inclined toward the seat plate 24 from the one plane. can do.

  Further, the back plate 28 has a retracting portion that is retracted in a direction close to each other facing a rotation path when the first and second belt portions 25 and 26 rotate around the second and third axis L3. Therefore, when the first and second belt portions 25, 26 are disposed at the upper limit position, the first and second belt portions 25, 26 are prevented from interfering with the back plate 28, and the seat plate is used during use. When the 24 is rotated from the retracted position to the substantially horizontal seating position, the first and second belt portions 25 and 26 are rotated in the direction of approaching the seat plate 24 by their own weights, and manual operation is performed. It is not necessary and can be reliably returned to the use position, and convenience is improved.

It is a side view which shows the seating apparatus 21 of the stair lift 20 of one Embodiment of this invention. It is a rear view of the seating apparatus 21 seen from the left side of FIG. It is an enlarged side view of the section E of FIG. FIG. 4 is an enlarged rear view of the first connecting body 45. It is sectional drawing seen from the cut surface line VV of FIG. FIG. 6A is a diagram showing a state where a user seated on the seating device 21 is wearing a seat belt, and FIG. 6A is a side view of the seating device 21 on which the user is seated as viewed from the left side, and FIG. ) Shows a front view of the seating device 21 on which the user is seated as seen from the front. It is a perspective view which shows the stair lift 2 which mounts the seating apparatus 1 of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 Stair lift device 21 Seating device 22 Upper surface of elevator body 9 23 Base 24 Seat plate 25 First belt portion 26 Second belt portion 27 Connection means 28 Back plate 29 Upper limit restricting means 31, 32 Armrest member 39 Step portion 40 Hollow frame Member 41, 42 Side surface 43, 44 Side plate 45 First connection body 46 Second connection body 47 Axis 48 Back plate frame member 49 Seat plate auxiliary pad 50 First bracket 51 First swing arm 52 Second bracket 53 Second swing Arm 60 Fastener 61 Winding tool 63 Insertion tool 64 Casing 66 Unlocking piece 68, 69 Retraction part 70, 73, 80, 83 Pin bolt 71, 81 Contact pin 72 Notch 74 Bolt insertion part 77 Contact piece 82 Contact Surface 84 Bolt insertion part 87 Contact piece L1 1st axis L2 2nd axis

Claims (3)

A seating device for a stair lift where a seat plate on which a user sits and a back plate that supports the back of the user are mounted on a lift body that runs along a guide rail installed on a staircase or a wall facing the staircase of a building In
A base fixed to the upper part of the elevator body;
A seat plate provided on the base so as to be rotatable about a substantially horizontal first axis between a substantially horizontal seating position and a substantially vertical retracted position;
A back plate provided on the base so as to face the seat plate disposed at the retracted position;
A first belt portion connected to one side portion of the base so that a base end portion thereof is rotatable around a second axis substantially parallel to the first axis;
A second belt portion connected to the other side portion of the base so that a base end portion is rotatable around a third axis substantially parallel to the first axis;
Connecting means for connecting the first belt portion and the second belt portion to each other and releasing the connection state;
When the first and second belt portions rotate about the second and third axes in the direction of approaching the back plate, the displacement of the first belt portion is closer to the seat plate than the vertical virtual plane including the rotation center. A seating device for a stair lift, comprising upper limit restricting means for blocking at a predetermined upper limit position in the vicinity of the inclined back plate.   When the first and second belt portions rotate about the second and third axes in the direction of approaching the seat plate disposed at the seating position, the horizontal displacement including the rotation center is assumed. 2. The seating device for a stair lift according to claim 1, further comprising lower limit position limiting means for blocking at a predetermined lower limit position inclined to the back plate side from one plane. 2. The back plate includes a retracting portion that retracts in a direction close to each other facing a rotation path when the first and second belt portions rotate around a second axis. Or the seating device of the stair lift as described in 2.

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