JP2008100789A - Seat locking device for stair elevating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat locking device for a stair elevating device capable of carrying a user safely. <P>SOLUTION: In a conveyance device, a control part 124 controls an operation of a motor 55 for angular displacement in accordance with a permission order given from a permission part 123 having a function for detecting whether an elevating device body 9 is at a loading position at an upper story 5 or not when the elevating device body 9 is at the loading position at the upper story 5. The control part 124 prevents a seating part 10 from being displaced from a reference position around a first axis L1 by arranging a first locking piece 72 at a locking position without giving current to a first solenoid part 74 when the permission order is not given from the permission part 123. Consequently, when the elevating device body 9 is not at the loading position at the upper story 5, the angular displacement of the seating part 10 from the reference position is prevented, and the angular displacement of the seating part 10 during running on a guide rail 8 is prevented without fail to carry the user more safely than a conventional device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a seat lock device for a stair lift that conveys a user while seated on a seat.

  A stair lift is a lift that moves up and down along a guide rail installed on a stair, a ramp, or a wall facing the stair. The chair type stair lift includes a seating portion, and when the seating portion is lifted and lowered along the guide rail, the front surface of the seating portion is oriented in a direction substantially perpendicular to the traveling direction and the vertical direction. That is, the user sitting on the seating part moves in the lateral direction. For example, if the user gets on and off the elevator body with the seating section arriving at the upper floor with the seating section facing sideways, there is a risk of falling, so in the conventional technology, the front of the seating section is on the landing side It is structured to be angularly displaced toward. The elevator body is provided with a lock mechanism that locks the angular displacement of the seating part, and by operating a lever provided on the elevator body, the seating part lock is manually released to angularly displace the seating part, Instead of the lever, a motor and a switch for operating the motor to operate or not operate are provided to unlock the seating portion electrically (for example, see Patent Document 1).

Japanese Patent Laying-Open No. 2005-213011

  In the stair lift of the prior art, there is a possibility that the seating part may be angularly displaced while the elevator main body is traveling by operating a lever or switch. Therefore, there is a stair lift that can transport the user more safely. It is desired.

  Accordingly, an object of the present invention is to provide a seat lock device for a stair lift that can transport a user more safely.

The present invention comprises a guide rail installed on a staircase, a ramp or a wall facing the staircase;
An elevator body that travels along the guide rail;
The elevator body is provided so as to be angularly displaceable about a substantially vertical axis, and a seating section on which a user sits,
The seating portion includes a reference position in which a front surface of the seating portion is substantially perpendicular to a traveling direction of the elevator body and a direction in which the axis extends, and the front surface of the seating portion from the reference position toward the upper floor side. A drive unit that angularly displaces between an angular displacement position that is angularly displaced about an axis; and
An input unit for inputting an operation command;
A displacement blocking portion capable of blocking angular displacement around the axis from the reference position of the seating portion;
In accordance with an operation command from the input unit, a control unit that controls the elevator body, the drive unit, and the displacement prevention unit,
A permission unit that gives a permission command to the control unit when the elevator main body is at the riding position on the upper floor,
When the permission command is not given from the permission unit, the control unit controls the displacement blocking unit to block the displacement of the seating portion from the reference position around the axis, and the permission command is given from the permission unit. A seat lock device for a stair elevator, wherein the displacement preventing portion is controlled so that the seat portion can be displaced from the reference position around the axis.

  According to the present invention, a stair lift is installed in a stair part such as a house and a nursing home. The stair lift is configured such that a guide rail extending over the lower floor and the upper floor is fixed to a wall facing the staircase, the ramp, or the staircase, and the main body of the elevator travels along the guide rail. The elevator body is provided with a seating part that can be angularly displaced about a substantially vertical axis, and the seating part is provided with a back plate, and a user sits on the seating part and makes the back part abut against the back plate for stability. In a seated state, it can move across the lower and upper floors. The user may be a healthy person, but the seat lock device for a stair lift according to the present invention can be advantageously implemented even for a physically handicapped person who has a disorder in spontaneous movement.

  An operation command input from the input unit is given to the control unit. The control unit controls the elevator body and the drive unit and the displacement prevention unit according to the operation command, and the elevator body travels along the guide rail, or the seat is angularly displaced around the axis by the drive unit, It is possible to prevent the seating portion provided at the reference position by the displacement prevention portion from being angularly displaced around the axis line from the reference position.

  The drive unit includes a seating portion, a reference position in which a front surface of the seating portion is directed in a traveling direction of the elevator main body and a direction substantially perpendicular to the axis, and the front surface of the seating portion from the reference position toward the upper floor side. Angular displacement is performed between the angular displacement positions angularly displaced about the axis. When the seating part is at the reference position, the user seated on the seating part is sideways with respect to the traveling direction, and in this state, the elevator body is moved along the guide rail, thereby saving the space of the device. I am trying. When the seating part is in the angular displacement position, the user seated on this seating part faces the upper floor, so it is easier for the user to get on and off the seating part on the upper floor where safety is required when getting on and off. Also, you can get on and off safely.

  The permission unit has a function of detecting whether or not the elevator main body is in the upper floor mounting position, and gives a permission command to the control unit when the elevator main body is in the upper floor mounting position. When the permission command is not given from the permission unit, the control unit controls the displacement blocking unit to block the displacement around the axis from the reference position of the seating unit, so that the elevator main body is mounted on the upper floor. If not, angular displacement from the reference position is prevented by the displacement prevention part, so that the angular displacement prevention part prevents angular displacement of the seating part even if the drive part attempts to angularly displace the seating part undesirably. Therefore, the seat portion is reliably prevented from being angularly displaced during traveling on the guide rail, and the user can be transported more safely.

  Further, when the permission command is given from the permission unit, the control unit controls the displacement prevention unit so that the displacement around the axis line from the reference position of the seating unit is possible, so that the elevator body is positioned at the mounting position on the upper floor. In some cases, the seating portion can be angularly displaced to the angular displacement position in accordance with an operation command from the input portion. As a result, when the elevator main body is located on the upper floor, the seating portion can be angularly displaced to the angular displacement position, so that the user can easily get on and off as described above.

In addition, the present invention includes a second displacement blocking portion capable of blocking angular displacement around the axis from the angular displacement position of the seating portion,
The controller is configured to prevent a second displacement so as to prevent displacement of the seating portion from the angular displacement position around the axis when the seating portion is angularly displaced from a reference position to an angular displacement position by the seating portion driving unit. It is characterized by controlling the part.

  According to the invention, when the control unit angularly displaces the seating part from the reference position to the angular displacement position by the seating part driving unit, the second displacement prevention unit causes the seating part at the angular displacement position to move around the axis. Therefore, when the seating portion is angularly displaced to and from the angular displacement position, the angular displacement from the angular displacement position of the seating portion is prevented, and the user can get on and off safely.

Further, the present invention includes a position detection unit that detects a position of the seating unit around the axis,
The control unit detects the presence of the seating portion at the angular displacement position by the position detection unit when the seating portion is angularly displaced by the drive unit from a reference position to an angular displacement position. When the seating portion is angularly displaced from the angular displacement position to the reference position by the driving portion, the driving portion is stopped when the position detecting portion detects that the seating portion is at the reference position. It is characterized by.

  According to the present invention, the control unit controls the drive unit using the detection result detected by the detection unit. When the seating portion is angularly displaced by the driving unit from the reference position to the angular displacement position, when the position detecting unit detects that the seating portion is at the angular displacement position, the driving unit is stopped and the angular displacement is detected. When the seating portion is angularly displaced from the position to the reference position by the drive portion, the drive portion is stopped when the position detection portion detects that the seating portion is at the reference position. It is possible to prevent the seating portion from being angularly displaced far beyond the range between the displacement positions and improve safety.

  According to the present invention, when the elevator main body is not in the upper floor riding position, the displacement preventing portion prevents the angular displacement from the reference position, so that the drive portion undesirably causes the seating portion to be angularly displaced. However, since the angular displacement preventing portion prevents angular displacement of the seating portion, it is reliably prevented that the seating portion is angularly displaced while traveling on the guide rail, and the user can be transported more safely. .

  Further, according to the present invention, when the seating portion is angularly displaced to the angular displacement position, the angular displacement from the angular displacement position of the seating portion is prevented, and the user can get on and off safely.

  In addition, according to the present invention, it is possible to prevent the seating portion from being angularly displaced far beyond the range between the reference position and the angular displacement position, thereby improving safety.

  FIG. 1 is a side view of a stair lift 1 including a seat lock device for a stair lift according to an embodiment of the present invention as viewed from the upper floor 5 side, and FIG. 2 is a stair lift installed on a stair 6 of a building 3. 1 is a front view of FIG. The stair lift 1 is provided on a staircase 6 between a lower floor 4 and an upper floor 5 of a building 3 such as a welfare facility and a home of a house, and lower floors 4 and upper floors of users such as elderly people, sick persons, and disabled persons. Used to support movement between floors 5. 1 and 2 show a state in which the seating portion 10 is arranged at the reference position.

  The stair lift 1 includes a guide rail 8 provided in parallel to the stair 6 along the stair 6 and the wall 7, and a lift 100 that moves along the guide rail 8. The lifting body 100 includes an elevator body 9 that travels along the guide rail 8 in the ascending direction A1 and the descending direction A2, and a seating portion 10 that is mounted on the elevator body 9. The guide rail 8 is installed close to the wall 7 of the stairs 6. The guide rail 8, the elevator main body 9, and the seating portion 10 constitute the stair elevator 1. The elevating body 100 moves along the guide rail 8 over the getting on / off position of the lower floor 4 and the getting on / off position of the upper floor 5. In FIG. 1, the raising / lowering body 100 arrange | positioned at the boarding / alighting position of the lower floor 4 is shown as the continuous line, and the raising / lowering body 100 arrange | positioned at the boarding / alighting position of the upper floor 5 is shown by the virtual line. The elevator body 100 is disposed on the floor 104 of the lower floor 4 at the getting-on / off position of the lower floor 4. At the getting-on / off position of the upper floor 5, when a footrest portion 25 described later is disposed at the footrest position, the footrest portion 25 becomes almost the same height as the surface of the floor 105 of the upper floor 5 and is close to the floor 105. To do.

  The guide rail 8 is supported by a plurality of brackets 127 installed at predetermined intervals on the step plate 106 of the stairs 6, the floor 104 of the lower floor 4, and the floor 105 of the upper floor 5. The guide rail 8 is formed linearly. The guide rail 8 extends between the lower floor 4 and the upper floor 5, and is also provided above the floors 104 and 105 of the lower floor 4 and the upper floor 5.

  The seat portion 10 includes a base 11 connected to the upper part of the elevator body 9 so as to be rotatable in the directions of arrows B1 and B2 around a substantially vertical first axis L1, and a horizontal second axis on the base 11. A seat plate 13 on which a user sits and is pivotally connected around L2 in the directions of arrows C1 and C2, and at one end in the width direction of the base 11, is rotated about an axis substantially parallel to the second axis L2. A first belt portion 15 that is movably coupled; a second belt portion 16 that is pivotally coupled to the other widthwise end of the base 11 about an axis substantially parallel to the second axis L2; The connecting means 17 for connecting the first and second belt portions 16 and 16 to each other and releasing the connected state, and the lower end on the side of the base 11 near the wall 7 with the seating portion 10 arranged at the reference position The back plate 18 that supports the user's back, and the base In the width direction both end portions of 1 and a pair of armrest members 21, 22 are pivotally supported on the arrow C1, C2 direction in the second axial about L2 in the width direction on both sides of the seat plate 13.

  The elevator body 9 is fitted into guide grooves 109 and 110 formed on both side portions 107 and 108 in a direction perpendicular to the extending direction of the guide rail 8 with a gap in the extending direction, respectively. A plurality of rollers 113 that roll on the guide surfaces 111 and 112 in contact with the planar guide surfaces 111 and 112 formed in the grooves 109 and 110, respectively, and the guide rail 8 are provided above the guide rails. A rack part 114 that extends along the extending direction and is realized by a chain, a sprocket wheel 115 that meshes with the rack part 114, and a lift drive source 116 that rotationally drives the sprocket wheel 115 are provided. The elevating drive source 116 includes an elevating motor 117 that is an electric motor and a speed reducer that decelerates the rotation of the elevating motor 117 to a predetermined rotational speed, and the rotational force decelerated by the speed reducer is transmitted via the sprocket wheel 115. To the rack 114. The lift drive source 116 selectively drives the sprocket wheel 115 to either one or the other around the rotation axis of the sprocket wheel 115 to move the elevator body 9 along the guide rail 8 in the lift direction A1. Or move in the descending direction A2. Stoppers 118 are provided at both ends in the extending direction of the guide rail 8 so that the elevator body 9 does not come off in the extending direction of the guide rail 8 by the stopper 118.

  The elevator main body 9 has a mounting portion 22 to which the seating portion 10 is rotatably mounted around the first axis L1. The attachment portion 22 is provided on the side portion opposite to the wall 7 with respect to the guide rail 8. The seat portion 10 is attached to the upper end portion 23 of the attachment portion 22, and the lower end portion 24 can be rotated in the directions of arrows D1 and D2 around a third axis L3 substantially parallel to the second axis L2. A footrest 25 is provided which is pivotally supported by the footrest. The footrest portion 25 is formed in a rectangular parallelepiped plate shape, and extends between a footrest position where one surface in the thickness direction is substantially horizontal and a retracted position where the one surface is substantially vertical and abuts the attachment portion 22. It is attached around the third axis L3 so as to be angularly displaceable in the direction D1. When the stair lift 1 is not used, the footrest 25 can be displaced and retracted to a position that does not get in the way when walking up and down the staircase 6.

  FIG. 3 is a rear view of the seating portion 10. The base 11 is welded to the upper end portion 23 of the mounting portion 22 so as to be connected to the hollow frame member 30 made of metal so as to be angularly displaceable around the first axis L1, and to both ends in the longitudinal direction of the hollow frame member 30. The pair of side plates 33 and 34, which are fixed by the height of the seat plate 13 and rise to a height position opposite to the side surfaces 31 and 32 on both sides in the width direction of the seat plate 13, and the first belt portion 15 are rotatable to the hollow frame member 30. It has the 1st connection body 35 to connect, and the 2nd connection body 36 which connects the 2nd belt part 16 to the said hollow frame member 30 so that rotation is possible.

  The lower end portions of the back plate frame members 38a and 38b made of metal pipes are fixed to the intermediate portion in the longitudinal direction of the hollow frame member 30 of the base 11 by welding. A pivot 37 for pivotally supporting the seat plate 13 and the armrest members 21 and 22 around the second axis L2 is inserted and fixed to the side plates 33 and 34, respectively. As described above, the seat plate 13 and the armrest members 21 and 22 can rotate in the directions of the arrows C1 and C2 using the second axis L2 as a common rotation axis, so that when the stair lift 1 is not used, the seat plate 13 and the armrest members 21 and 22 can be displaced to the wall 7 side, and can be retracted to a position that does not get in the way when walking up and down the stairs 6. Between the lower end portion of the back plate 18 and the seat plate 13, a seat plate auxiliary pad 39 is provided across the lower end portions 38 of the back plate frame members 38a and 38b.

  The connecting means 17 includes a fastener 41 called a buckle connected to the free end portion of the first belt portion 15, a winder 42 attached to the free end portion of the second belt portion 16, and an inside of the winder 42. A seat belt 43 accommodated in a wound state, and an insertion tool 44 also referred to as a “sluffing” attached to the front end of the seat belt 43. The winder 42 winds the seat belt 43 in the winding direction in the casing 45 by a spring force, and pulls the insertion tool 44 protruding from the casing 45 in the pulling direction against the spring force. The seat belt 43 is pulled out from the casing 45 and stretched so as to cover the vicinity of the base of the thigh of the user's legs from above, and the insertion tool 44 is locked to the fastener 41 by inserting the insertion tool 44 into the fastener 41. And both legs can be restrained with moderate tension. The fastener 41 has a lock release piece 46, and by pressing the lock release piece 46, the locked state of the insertion tool 44 by the fastener 41 can be released. Thus, when the locking state of the insertion tool 44 by the fastener 41 is released, the seat belt 43 is wound into the winding tool 42, and the insertion tool 44 and the seat belt 43 are suspended from the seat plate 13. Is prevented.

  Since the connecting means 17 is provided at each free end portion of the first and second belt portions 16, 16, the lower portion of the back plate 18 has a retracting portion 47, which is retracted by being curved in a convex manner in a direction approaching each other. 48 is formed. When viewed from the rear side, the lower portion of the back plate 18 increases in width as it goes upward from the lower end portion, and the vicinity of the height position of the armrest members 21 and 22 is the widest, and the upper portion is convexly curved upward. It is formed in a fan shape.

  Since the back plate 18 has the retracting portions 47 and 48, a rotation path of the first belt portion 15 and the fastener 41 is secured, and a rotation path of the second belt portion 16 and the insertion tool 41 is secured. It can be avoided that the first belt portion 15 and the fastener 41 and the second belt portion 16 and the insertion tool 41 interfere with the back plate 18.

  A metal shaft member 51 protruding downward is fixed to the hollow frame member 30 by welding. The shaft member 51 is provided coaxially with the first axis L1. The shaft member 51 is provided closer to the other end 152 than the center between the longitudinal ends of the hollow frame member 30. The shaft member 51 has a cylindrical shape, and a gear member 54 is fixed to a lower end portion 53 with a bolt or the like. The gear member 54 has an arc-shaped outer peripheral surface portion centered on the first axis L1, and teeth are formed on the outer peripheral surface portion.

  The shaft member 51 is provided with a bearing member 52 inserted therethrough. The bearing member 52 is realized by a thrust bearing, for example. One end portion of the first axis L <b> 1 of the bearing member 52 is provided in contact with the lower surface of the hollow frame member 30, and the other end portion is provided in contact with the upper surface of the attachment portion 22. The hollow frame member 30 and the mounting portion 22 are separated from each other in thickness by the bearing member 52 in the first axis L1 direction.

  FIG. 4 is a front view showing the connecting portion between the elevator body 9 and the seating portion 10 in a broken state. FIG. 5 is a cross-sectional view taken along the section line VV in FIG. The attachment portion 22 is provided with an angular displacement motor 55 that is an electric motor. In the angular displacement motor 55, the attachment portion 22 is provided at the upper end portion 23 of the attachment portion 22, and the metal insertion portion through which the shaft member 51 is inserted and is rotatably inserted around the first axis L <b> 1. 56, a metal main frame portion 57 that supports the insertion portion 56, and a cover body 58 provided on the main frame portion 57 so as to cover the insertion portion 56 and the main frame portion 57.

  The angular displacement motor 55 is fixed to the main frame portion 57 via a motor mounting bracket 59 so that the fourth axis L4 of the output shaft 61 is substantially parallel to the first axis L1. The angular displacement motor 55 is fixed to the motor mounting bracket 59 with bolts or the like, and the motor mounting bracket 59 is fixed to the main frame portion 57 with bolts or the like. A pinion gear 62 is provided on the output shaft 61 of the angular displacement motor 55 so as to be prevented from rotating around the fourth axis L4 by a pin member 63. The pinion gear 62 meshes with the teeth of the gear member 54. By driving the angular displacement motor 55, the pinion gear 62 rotates about the fourth axis L4, and accordingly, the gear member 54 rotates about the first axis L1. When the gear member 54 rotates about the first axis L1, the shaft member 51 rotates about the first axis L1, so that the seating portion 10 rotates about the first axis L1. The gear member 54, the angular displacement motor 55, and the pinion gear 62 constitute a drive unit.

  The gear member 54 is fixed to the shaft member 51 by bolts 64. On the outer peripheral surface of the gear member 54, teeth are formed in a range of a predetermined angle θ1 with the first axis L1 as the center. The predetermined angle θ1 is selected to be slightly larger than the angle at which the seat portion 10 should be angularly displaced about the first axis L1, and is selected to be, for example, about 70 ° to 100 °. Since the gear member 54 is formed with teeth only in the range of the predetermined angle θ1 with the first axis L1 as the center, even if the angular displacement motor 55 malfunctions, the tooth exceeds the range of the predetermined angle θ1. Even if the shaft member 51 is to be angularly displaced, the pinion gear 62 and the gear member 54 are not engaged with each other, so that the seating portion 10 is prevented from being angularly displaced beyond a predetermined range, and for the angular displacement. It is possible to prevent the motor 55 from being overloaded.

  FIG. 6 is a front view showing a part of the stair lift 1 when the seating unit 10 is arranged at the angular displacement position in a state where the lifting body 100 is stopped at the getting on / off position of the upper floor 5. FIG. 6 is a plan view of a portion shown in FIG. In FIG. 6, the seating portion 10 at the angular displacement position is indicated by a solid line, and the seating portion 10 at the reference position is indicated by an imaginary line. In FIG. 7, the seating portion 10 at the angular displacement position is indicated by a virtual line, and the seating portion 10 at the reference position is indicated by a solid line.

  By driving the angular displacement motor 55, the seating portion 10 is approximately in the direction in which the front surface of the seating portion 10 is in the ascending and descending directions A <b> 1 and A <b> 2, which is the traveling direction of the elevator body 9, and the first axis L <b> 1. A reference position (indicated by a virtual line in FIG. 6 and a position indicated by a solid line in FIG. 7) facing in the vertical direction, and the front of the seating portion 10 from the reference position toward the upper floor 5 side in advance around the first axis L1 Angular displacement is performed between the angular displacement position (the position indicated by the solid line in FIG. 6 and the position indicated by the phantom line in FIG. 7) that has been displaced by the predetermined angle θ2. The predetermined angle θ2 is selected to be slightly smaller than the predetermined angle θ1 described above, and is selected to be 90 °. When the seating portion 10 is disposed at the reference position, the width direction of the seating portion 10 is perpendicular to the vertical direction and the direction perpendicular to the vertical direction and the extending direction of the guide rail 8. That is, when the seating portion 10 is arranged at the reference position, the back surface of the back plate 18 faces the wall 7 close to the guide rail 8, and the user who sits is in a state where the back faces the wall 7. Will be landscape. The width direction of the seating portion 10 is the longitudinal direction of the hollow frame member 30. Further, when the seating portion 10 is viewed in a direction perpendicular to the width direction and the vertical direction of the seating portion 10 and from the seat plate 13 toward the back plate 18, the front surface of the seating portion 10 is defined.

  The first axis L1 described above is set so that the movable path when the seating section 10 is angularly displaced over the reference position and the angular displacement position does not overlap the wall 7. By providing the first axis L1 near one end in the width direction of the seating portion 10, here near the upper floor 5 in the traveling direction, the wall 7 can be moved when the seating portion 10 is angularly displaced over the reference position and the angular displacement position. It is possible to reduce the radius of the movable path in the portion close to the door, the lift body 100 can be disposed close to the wall 7, and the stair lift 1 can be installed in a narrow space.

  FIG. 8A is a partial cross-sectional view as viewed from the cutting plane line VIII-VIII in FIG. 1, and FIG. 8B is a plan view of the hollow frame member 30 around the first axis L1 in FIG. FIG. 5 is a diagram showing the angular displacement. In FIG. 8A, the hollow frame member 30 when the seating portion 10 is disposed at the reference position is indicated by a solid line, and the hollow frame member 30 when the seating portion 10 is disposed at the angular displacement position is indicated by an imaginary line. ing. In FIG. 8 (2), the hollow frame member 30 when the seating portion 10 is disposed at the angular displacement position is indicated by a solid line, and the hollow frame member 30 when the seating portion 10 is disposed at the reference position is indicated by an imaginary line. ing.

  A metal attachment plate 65 is provided on the upper end portion 23 of the attachment portion 22. The mounting plate 65 is fixed to the upper end portion 23 of the mounting portion 22 so that the thickness direction thereof is parallel to the first axis L1. The mounting plate 65 has a flat upper surface and is spaced apart from the seating portion 10.

  The mounting plate 65 is provided with first and second sensors 66 and 67 that constitute a position detector. The first and second sensors 66 and 67 are realized by optical sensors, and are realized by a photo interrupter. The first and second sensors 66 and 67 detect the hollow frame member 30. The first sensor 66 is provided at a position where a part of the hollow frame member 30 is close when the seat portion 10 is disposed at the reference position. When the first sensor 66 is closer to the other side in the width direction than the first axis L1 and the seat portion 10 is disposed at the reference position, the wall of the hollow frame member 30 is shown in FIG. It is provided at a position facing the end on the 7 side. A reflective member is provided at a position in the hollow frame member 30 that can face the first sensor 66. The first sensor 66 emits light upward, receives light from above, and outputs a detection output signal corresponding to the amount of received light. When the seating portion 10 starts to be angularly displaced from the reference position to the angular displacement position, the hollow frame member 30 is separated from the first sensor 66. As a result, the amount of light received by the first sensor 66 changes and the output detection signal changes.

  The second sensor 67 is provided at a position where a part of the hollow frame member 30 is close when the seat portion 10 is disposed at the angular displacement position. As shown in FIG. 8 (2), the second sensor 67 is located closer to the other side in the width direction than the first axis L1, and the hollow frame member 30 is located when the seating portion 10 is disposed at the angular displacement position. Is provided at a position facing the end in the descending direction A2. A reflective member is provided at a position in the hollow frame member 30 that can face the second sensor 67. The second sensor 67 emits light upward, receives light from above, and outputs a detection signal corresponding to the amount of received light. When the seating portion 10 starts to be angularly displaced from the angular displacement position to the reference position, the hollow frame member 30 is separated from the second sensor 67. As a result, the amount of light received by the second sensor 67 changes, and the output detection signal changes.

  Based on the detection signals output from the first and second sensors 66 and 67, the position of the seating portion 10 can be detected. For example, comparing the detection signal with a threshold value and determining that the hollow frame member 30 is facing if the threshold value is equal to or greater than the threshold value, erroneous detection can be prevented. Since the first and second sensors 66 and 67 output an electronic signal corresponding to the amount of received light that changes as the hollow frame member 30 approaches, the first sensor 66 and 67 does not contact the seat portion 10 that is angularly displaced. The position can be detected. For example, when the position of the seating portion 10 is detected by mechanical contact, an undesired force is applied by the contact or wear due to the contact causes a failure. However, the occurrence of such a problem can be prevented.

  FIG. 9 is a cross-sectional view taken along section line IX-IX in FIG. 8A, and FIG. 9A shows that the first locking piece 72 of the first displacement blocking portion 71 is disposed at the locking position. FIG. 9B is a diagram showing the first locking piece 72 of the first displacement prevention portion 71 arranged at the retracted position. In FIGS. 9A and 9B, a part of the first mounting bracket 75 is omitted in order to prevent the drawing from becoming complicated. 10 (1) is a cross-sectional view as viewed from the cutting plane line Xa-Xa in FIG. 9 (1), and FIG. 10 (2) is a cross-sectional view as viewed from the cutting plane line Xb-Xb in FIG. 9 (2). is there.

  The first displacement blocking portion 71 includes a first locking piece 72, a first support portion 73 that is fixed to the mounting plate 65 and supports the first locking piece 72 so as to be angularly displaceable, a first solenoid portion 74, A first mounting bracket 75 for mounting the first solenoid part 74 to the mounting plate 65 and a first connecting piece 76 for connecting the first solenoid part 74 and the first locking piece 72 are configured.

  A first hole 77 is formed in the mounting plate 65. The first locking piece 72 is supported by the first support portion 73 provided at the lower portion of the mounting plate 65 so that the middle portion in the longitudinal direction thereof is pivotable, and the one end portion 72 a in the longitudinal direction extends from the first hole 77. It is provided so that it can protrude. The first locking piece 72 is angularly displaced about a fourth axis L4 extending parallel to a tangential direction of a circle centered on the first axis L1 on a virtual plane perpendicular to the first axis L1.

  The first solenoid part 74 is attached to the lower part of the attachment plate 65 with a first attachment fitting 75. The first solenoid unit 74 includes a coil and an operating piece 78. The first solenoid part 74 moves the operating piece 78 in one direction F1 in a predetermined direction in a direction perpendicular to the fourth axis L4 by passing a current through the coil. When no current is passed through the coil, no force is applied to the operating piece 78 by the coil, so that the operating piece 78 can be moved in the predetermined direction by applying an external force.

  One end of the first connecting piece 76 in the longitudinal direction is connected to the operating piece 78 so as to be rotatable about an axis parallel to the fourth axis L4. The other end portion 72b in the longitudinal direction of the first locking piece 72 is rotatably connected to the other end portion in the longitudinal direction of the first connecting piece 76.

  A first coil spring 79 is attached to the first locking piece 72 coaxially with the fourth axis L4. The first coil spring 79 is biased so that one end 72a in the longitudinal direction of the first locking piece 72 protrudes from the first hole 77 to the locking position in the direction indicated by the arrow E1 around the fourth axis L4. Is done.

  In a state where no current flows through the coil, the first solenoid part 74 is biased in the direction indicated by the arrow E1 around the fourth axis L4 via the first connecting piece 76. The operating piece 78 is pulled to the other side F2 in the predetermined direction.

  By causing a current to flow through the coil of the first solenoid part 74, the operating piece 78 moves to one F1 in the predetermined direction, and accordingly, the first locking piece 72 is moved through the first connecting piece 76. The first end 72a in the longitudinal direction of the first locking piece 72 can be moved to the retracted position retracted from the locking position by rotating in the direction indicated by the arrow E2 around the four axes.

  The hollow frame member 30 is provided with a metal-engaged portion 81 that can come into contact with the first locking piece 72 disposed at the locking position. The locked portion 81 is fixed to the side portion of the hollow frame member 30, and is provided at a predetermined distance from the first axis L1 within a virtual plane that is perpendicular to the first axis L1. The locked portion 81 includes a first portion 82 that protrudes in the horizontal direction from the hollow frame member 30, and a second portion 83 that protrudes downward from the free end portion of the first portion 82. The movable path of the free end portion of the second portion 83 of the locked portion 81 when the seating portion 10 is angularly displaced about the first axis L1 is a part of the first locking piece 72 disposed at the locking position. And overlap. When the seating portion 10 is disposed at the reference position, the second portion 83 of the locked portion 81 is disposed closer to the wall 7 than the first locking piece 72 disposed at the locking position, that is, the first axis. It is arranged upstream of the first locking piece 72 arranged at the locking position in the direction from the reference position toward the angular displacement position around L1, that is, in the direction indicated by the arrow B1. Therefore, when the seating portion 10 is disposed at the reference position, the seating portion 10 is angularly displaced in the direction indicated by the arrow B1 around the first axis L1 by placing the first locking piece 72 at the locking position. The first locking piece 72 and the free end portion of the second portion 83 of the locked portion 81 are in contact with each other, and the seating portion 10 prevents angular displacement in the direction indicated by the arrow B1 around the first axis L1. it can.

  FIG. 11 is a cross-sectional view taken along the section line XX in FIG. 8 (2), and FIG. 11 (1) shows that the second locking piece 92 of the second displacement blocking portion 91 is disposed at the locking position. FIG. 11B is a diagram showing the second locking piece 92 of the second displacement prevention portion 91 arranged at the retracted position. In FIGS. 11A and 11B, a part of the second mounting bracket 95 is omitted in order to prevent the drawing from becoming complicated. 12 (1) is a cross-sectional view seen from the cutting plane line XIa-XIa in FIG. 11 (1), and FIG. 12 (2) is a cross-sectional view seen from the cutting plane line XIb-XIb in FIG. 11 (2). is there.

  The second displacement blocking portion 91 includes a second locking piece 92, a second support portion 93 that is fixed to the mounting plate 65 and supports the second locking piece 92 so as to be angularly displaceable, a second solenoid portion 94, A first mounting bracket 75 for mounting the second solenoid portion 94 to the mounting plate 65 and a first connecting piece 76 for connecting the first solenoid portion 74 and the first locking piece 72 are configured.

  A second hole 97 is formed in the mounting plate 65. The second locking piece 92 is supported by the second support portion 93 provided at the lower portion of the mounting plate 65 so that the middle portion in the longitudinal direction thereof is pivotable, and the one end portion 92 a in the longitudinal direction extends from the second hole 97. It is provided so that it can protrude. The second locking piece 92 is angularly displaced about a fifth axis L5 extending in parallel to a tangential direction of a circle centered on the first axis L1 on a virtual plane perpendicular to the first axis L1.

  The second solenoid portion 94 is attached to the lower portion of the attachment plate 65 by a second attachment fitting 95. The second solenoid part 94 includes a coil and an operating piece 98. The second solenoid section 94 moves the operating piece 98 in one of the predetermined directions in the direction perpendicular to the fifth axis L5, that is, in the direction indicated by the arrow G1 by passing a current through the coil. When no current is supplied to the coil, no force is applied to the operating piece 98 by the coil, so that the operating piece 98 can be moved in the predetermined direction by applying an external force.

  One end of the second connecting piece 96 in the longitudinal direction is connected to the operating piece 98 so as to be rotatable about an axis parallel to the fifth axis L5. The other longitudinal end 92b of the second locking piece 92 is rotatably connected to the other longitudinal end of the second connecting piece 96.

  A second coil spring 99 is attached to the second locking piece 92 coaxially with the fourth axis L4. The second coil spring 99 is biased so that one end portion 92a in the longitudinal direction of the second locking piece 92 protrudes from the second hole 97 to the locking position in the direction indicated by the arrow G1 around the fifth axis L5. Is done.

  In a state where no current flows through the coil, the second solenoid portion 94 is urged in the direction indicated by the arrow G1 around the fifth axis L5 via the second connecting piece 96. Thus, the operating piece 98 is pulled to the other H1 in the predetermined direction.

  By causing a current to flow through the coil of the first solenoid part 74, the operating piece 98 moves to one side H <b> 2 in the predetermined direction, and accordingly, the second locking piece 92 is moved through the second connecting piece 96. By rotating in the direction indicated by the arrow G2 around the five axis L5, the one end 92a in the longitudinal direction of the second locking piece 92 can be moved to the retracted position retracted from the locking position.

  The hollow frame member 30 is provided with a metal-engaged portion 101 that can come into contact with the second locking piece 92 arranged at the locking position. The locked portion 101 is fixed to the bottom of the hollow frame member 30 and is provided at a predetermined distance from the first axis L1 within a virtual plane that is perpendicular to the first axis L1. The movable path of the free end portion of the locked portion 101 when the seating portion 10 is angularly displaced about the first axis L1 overlaps a part of the second locking piece 92 disposed at the locking position. When the seating portion 10 is disposed at the angular displacement position, the locked portion 101 is disposed in a direction away from the upper floor 5 relative to the second locking piece 92 disposed at the locking position, that is, the first portion. Around the axis L1, it is arranged upstream of the second locking piece 92 arranged at the locking position in the direction from the angular displacement position to the reference position, that is, in the direction indicated by the arrow B2. Therefore, when the seating portion 10 is disposed at the angular displacement position, the second latching piece 92 is disposed at the latching position so that the seating portion 10 is angularly displaced in the direction indicated by the arrow B2 around the first axis L1. The second locking piece 92 and the free end portion of the locked portion 101 come into contact with each other, and the seating portion 10 can prevent angular displacement in the direction indicated by the arrow B2 around the first axis L1.

  FIG. 13 is a block diagram showing an electrical configuration of the stair lift 1. The stair lift 1 further includes an input unit 121, a seating sensor 122, a permission unit 123, a control unit 124, and an acoustic output unit 125. The input unit 121 is realized by a push button that inputs an operation command. The input unit 121 includes a first button 121A capable of inputting an ascending operation command and an operation command for angular displacement in a direction from the reference position toward the angular displacement position, and a descent operation command and a downward operation command and in the direction from the angular displacement position toward the reference position. And a second button 121B capable of inputting an operation command for angular displacement.

  The input unit 121 is provided on the armrest member 21 of the seating unit 10, the lower floor 4, and the wall 7 of the upper floor 5. The input unit 121 provided on the armrest member 21 of the seating unit 10 is a main body input unit 121a, and the input unit 121 provided on the walls 7 of the lower floor 4 and the upper floor 5 is the lower floor input section 121b and the upper floor input section 121c. To do. The main body input unit 121 a is provided at the free end of the armrest member 21.

  The seating sensor 122 is provided on the seat plate 13 and detects whether or not an object to be transported is mounted on the seat plate 13. The seating sensor 122 is realized by a pressure sensor.

  The permission unit 123 gives a permission command to the control unit 124 when the elevator body 9 is at the mounting position on the upper floor 5. The permission unit 123 determines whether or not the elevator body 9 is at the riding position on the upper floor 5 by detecting the rotation amount of the lifting motor 117. The permission unit 123 includes a rotary encoder, and an arithmetic processing circuit that counts the pulses of the rotary encoder and determines whether or not the elevator body 9 is at the mounting position on the upper floor 5 based on the counted number of pulses. Consists of. When the arithmetic processing circuit of the permission unit 123 determines that the elevator main body 9 is at the mounting position of the upper floor 5, it gives a permission command to the control section 124, and the elevator main body 9 is at the mounting position of the upper floor 5. When the determination is made, a permission command is given to the control unit 124. The permission unit 123 also determines whether or not the elevator body 9 is at the riding position on the upper floor 5. When the elevator body 9 is at the riding position on the upper floor 5, a lower layer position command is sent to the control unit 124. give.

  The control unit 124 is configured to include a microcomputer and a driver circuit, and according to detection signals given from the input unit 121, the first sensor 66, the second sensor 67, and the seating sensor 122, the lifting / lowering motor 117, and the angular displacement The motor 55, the first solenoid unit 74, and the second solenoid unit 94 are controlled. The microcomputer is mounted on the elevator body 9. The microcomputer includes a CPU (Central Processing Unit) and a non-volatile recording medium such as a ROM (Read Only Memory) in which the control program is recorded. A command signal to be controlled is generated, and a current is individually applied to each of the above parts, or supply of current is stopped by a driver circuit in accordance with the command signal. The driver circuit is individually provided in each part. The control unit 124 also constitutes a position detection unit together with the first sensor 66 and the second sensor 67.

  When the control unit 124 determines that the object to be conveyed is not mounted on the seating unit 10 based on the detection signal given from the seating sensor 122, the control unit 124 does not respond to the operation command given from the main body input unit 121a, and the lower floor input unit It responds to the operation command given from 121b and the upper floor input part 121c. When the control unit 124 determines that the object to be conveyed is mounted on the seating unit 10 based on the detection signal provided from the seating sensor 122, the control unit 124 provides the main body input unit 121a, the lower floor input unit 121b, and the upper floor input unit 121c. When an operation command is given simultaneously from the main body input unit 121a, the lower floor input unit 121b, and the upper floor input unit 121c in response to the operation command, the main body input unit 121a, the lower floor input unit 121b, and the upper floor input unit 121c A priority is provided, and a response is made to the input unit 121 having a higher priority.

  On the basis of the detection signal of the first sensor 66, the control unit 124 determines that the seating unit 10 is at the reference position, and when the permission command is not given from the permission unit 123, the control unit 124 Does not pass current. As a result, the seat portion 10 is locked at the reference position. When the seating portion 10 is locked at the reference position, no current flows through the first solenoid portion 74, so that power consumption caused by the first solenoid portion 74 can be suppressed.

  In addition, when a permission command is given from the permission unit 123 and an operation command for angularly moving the seating unit 10 is given, the control unit 124 causes a current to flow through the first solenoid unit 74. As a result, the locking of the seating portion 10 at the reference position is released, and the seating portion 10 can be angularly displaced.

  On the basis of the detection signal of the second sensor 67, the control unit 124 determines that the seating unit 10 is at the angular displacement position, and when the permission command is not given from the permission unit 123, the first solenoid unit 74. Does not pass current. As a result, power consumption caused by the first solenoid unit 74 can be suppressed.

  Further, the control unit 124 determines that the seating unit 10 is at the reference position based on the detection signal of the first sensor 66, and when the permission command is not given from the permission unit 123, the control unit 124 controls the second solenoid unit 94. Does not pass current. When the seating part 10 is in the reference position, no current flows through the second solenoid part 94, so that power consumption generated by the second solenoid part 94 can be suppressed.

  In addition, when a permission command is given from the permission unit 123 and an operation command for angularly moving the seating unit 10 is given, the control unit 124 causes a current to flow through the second solenoid unit 94. This prevents the angular displacement of the seat portion 10 from being blocked by the second locking piece 92 when the seat portion 10 is angularly displaced.

  On the basis of the detection signal of the second sensor 67, the control unit 124 determines that the seating unit 10 is at the angular displacement position, and when the permission command is not given from the permission unit 123, the second solenoid unit 94. Do not pass current through. As a result, the seat portion 10 is locked at the angular displacement position. When the seating portion 10 is locked at the angular displacement position, no current is passed through the second solenoid portion 94, so that power consumption caused by the second solenoid portion 94 can be suppressed.

  In addition, when the permission command is not given from the permission unit 123 and the first button 121A is pressed, the control unit 124 determines that the ascending operation command is given, and the pressing time of the first button 121A is reached. Accordingly, the elevating motor 117 is driven to move the seating portion 10 in the ascending direction A1, that is, when the elevating command is given from the permitting unit 123, the elevating motor 117 is stopped.

  In addition, when the permission command is not given from the permission unit 123 and the second button 121B is pressed, the control unit 124 determines that the ascending operation command has been given, and the pressing time of the second button 121B is reached. Accordingly, the elevating motor 117 is driven to move the seating portion 10 in the lowering direction A2, that is, lower. When the elevator body 9 is arranged at the boarding position on the lower floor 4, the permission unit 123 gives a movement stop signal to the control unit 124, and the control unit 124 stops the lifting motor 117 when the movement stop signal is given. .

  Further, when the permission command is given from the permission unit 123 and the first button 121A is pressed, the control unit 124 determines that an operation command for angular displacement in the direction from the reference position toward the angular displacement position is given. Then, according to the pressing time of the first button 121A, the angular displacement motor 55 is driven to angularly displace the seating portion 10 around the first axis L1 in the direction of the arrow B1. When the control unit 124 determines that the seating unit 10 is in the angular displacement position based on the detection signal of the second sensor 67, the angular displacement motor 55 is not driven even when the first button 121A is pressed.

  In addition, when the permission command is given from the permission unit 123 and the second button 121B is pressed, the control unit 124 determines that the operation command for angular displacement in the direction from the reference position toward the angular displacement position is given. Then, according to the pressing time of the second button 121B, the angular displacement motor 55 is driven to angularly displace the seating portion 10 around the first axis L1 in the direction of the arrow B2. When the control unit 124 determines that the seating unit 10 is at the reference position based on the detection signal of the first sensor 66, when the first button 121A is pressed, the angular displacement motor 55 is not driven. The elevating motor 117 is driven to move the seating portion 10 in the lowering direction A2, that is, lower.

  The sound output unit 125 is configured by a speaker, and outputs a sound in response to a command from the control unit 124. When one of the first and second buttons 121 </ b> A and 121 </ b> B of the input unit 121 is pressed, the control unit 124 outputs the first acoustic information from the acoustic output unit 125, and the elevator body 9 is placed at the getting on / off position of the upper floor 5. When the elevator body 9 arrives at the getting-on / off position of the lower floor 4, when the seating part 10 is angularly displaced and arranged at the reference position, and when the seating part 10 is angularly displaced and arranged at the angular displacement position When this is done, the sound output unit 125 outputs second sound information different from the first sound information. The first acoustic information is, for example, a “beep” sound, and the second acoustic information is, for example, a “beep” sound. By outputting the acoustic information from the acoustic output unit 125, the user can confirm whether the operation of the input unit 121 is correctly performed, and at what stage should the pressing of the input unit 121 be stopped Can be confirmed.

  FIG. 14 is a timing chart showing the operation of the stair lift 1. In the timing chart of FIG. 14, the elevator main body 9 stopped on the lower floor 4 is moved to the upper floor 5, the seating portion 10 is angularly displaced from the reference position to the angular displacement position, and the seating portion 10 is again moved from the angular displacement position. An operation of moving the elevator main body 9 to the lower floor 4 after angular displacement to the reference position is shown. The timing chart of FIG. 14 shows the case where the main body input unit 121a is operated when the control unit 124 determines that the object to be conveyed is mounted based on the detection signal from the seating sensor 122. The same applies to the case where the main body input unit 121a or the upper floor input unit 121c is operated.

  FIG. 14 (1) shows an operation command signal given to the control unit 124 from the first button 121A. When the first button 121A is pressed, a high level (H) signal is given to the control unit 124, and when the first button 121A is not pressed, a low level (L) signal is given to the control unit 124. Represents.

  FIG. 14 (2) shows an operation command signal given to the control unit 124 from the second button 121B. When the second button 121B is pressed, a high level (H) signal is given to the control unit 124, and when the first button 121A is not pressed, a low level (L) signal is given to the control unit 124. Represents.

  FIG. 14 (3) shows the rotating state of the lifting motor 117. In FIG. 14 (3), the current for moving in the ascending direction A1 is given to the raising / lowering motor 117 at the plus level (+), the raising / lowering motor 117 is rotated forward, and when it is at the zero level (0), the raising / lowering is performed. No current is given to the motor 117, and when it is at a negative level (-), a current for moving in the ascending direction A1 is given to the raising / lowering motor 117, and the raising / lowering motor 117 is reversely rotated. To express.

  FIG. 14 (4) shows an upper floor arrival signal given from the permission unit 123 to the control unit 124. When the elevator main body 9 is at the getting on / off position on the upper floor 5, a high level (H) signal (permission command) is given from the permission section 123 to the control section 124, and when the elevator main body 9 is not at the getting on / off position on the upper floor This represents that a low level (L) signal (non-permission instruction) is given from the permission unit 123 to the control unit 124.

  FIG. 14 (5) shows a detection signal given from the first sensor 66 to the control unit 124. When the seating portion 10 is located at the reference position, a high level (H) signal is given from the first sensor 66 to the control unit 124, and when the seating portion 10 is not located at the reference position, the first sensor 66 is provided. Represents that a low level (L) signal is supplied to the control unit 124.

  FIG. 14 (6) shows a detection signal given from the second sensor 67 to the control unit 124. When the seating portion 10 is disposed at the angular displacement position, a high level (H) signal is provided from the second sensor 67 to the control unit 124, and when the seating portion 10 is not disposed at the angular displacement position, This represents that a low level (L) signal is supplied from the sensor 67 to the control unit 124.

  FIG. 14 (7) shows the rotation state of the angular displacement motor 55. At the plus level (+), current for angular displacement in the direction of the arrow B1 is given to the angular displacement motor 55, and at zero level (0), no current is given to the angular displacement motor 55, At a minus level (−), it represents that a current for moving in the direction of the arrow B2 is applied to the angular displacement motor 55.

  FIG. 14 (8) shows a current signal given to the first solenoid unit 74. In FIG. 14 (8), when the high level (H), current is applied to the first solenoid unit 74, and when the low level (L), no current is applied to the first solenoid unit 74.

  FIG. 14 (9) shows a current signal applied to the second solenoid unit 94. In FIG. 14 (9), when the high level (H), current is applied to the second solenoid unit 94, and when the low level (L), no current is applied to the second solenoid unit 94.

  At time t0, it is assumed that the elevator main body 9 is stopped at the getting on / off position of the lower floor 4 and the seating portion 10 is at the reference position. At time t0, the first button 121A and the second button 121B are not pressed, no current is applied to the lifting motor 117, the upper floor arrival signal is at a low level, and the detection signal of the first sensor 66 is at a high level. The detection signal of the second sensor 67 is at a low level, no current is applied to the angular displacement motor 55, and no current is applied to the first and second solenoid parts 74, 94. At this time, the seat portion 10 is locked at the reference position by the first locking piece 72.

  If the first button 121A is pressed at time t1, and if the first button 121A is continuously pressed, the controller 124 moves the elevator body 9 to the lift motor 117 at time t2 after a predetermined time T1 has elapsed. The electric current for moving to the raising direction A1 is given, and the raising / lowering motor 117 rotationally drives. The predetermined time T1 is selected to be about 1 second to 2 seconds. By providing such a predetermined time T1, it is possible to prevent an erroneous operation when the first button 121A is accidentally touched. When the lifting / lowering motor 117 starts to rotate, the lifting / lowering motor 117 is driven to rotate while the first button 121A is pressed.

  When the elevator body 9 reaches the boarding / exiting position on the upper floor 5, the upper floor arrival signal becomes high level at time t3, and the control unit 124 stops the lifting motor 117. At time t3, the pressing of the first button 121A may be released or may be pressed as it is.

  When the pressing of the first button 121A is released, it is the time when the first button 121A is pressed, and when the first button 121A is continuously pressed, at a time t4 when a predetermined time T2 has elapsed from the time t3. The control unit 124 gives the angular displacement motor 55 a current for moving the seating unit 10 in the direction of the arrow B2. As a result, the seat 10 is angularly displaced in the direction of the arrow B2 by the angular displacement motor 55. Thus, by angularly displacing the seating portion 10 from the reference position in the direction of the arrow B2, the first locking piece 72 and the locked portion 81 can be reliably separated, and the first locking piece 72 is It can be easily moved from the locking position to the retracted position.

  At time t5 when a predetermined time T3 has elapsed from time t4, the control unit 124 stops the angular displacement motor 55 and supplies current to the first and second solenoid units 74 and 94. As a result, the first and second locking pieces 72 and 92 can be moved from the locking position to the retracted position, the locking of the seating portion 10 at the reference position is released, and the angle from the reference position to the angular displacement position is increased. It becomes a displaceable state. The predetermined time T3 is selected to be about 5 seconds.

  At time t6 when a predetermined time T4 has elapsed from time t5, the control unit 124 gives the angular displacement motor 55 a current for moving the seating unit 10 in the direction of the arrow B1. As a result, the seat portion 10 is angularly displaced in the direction of the arrow B1 by the angular displacement motor 55.

  When the seating portion 10 is angularly displaced in the direction of the arrow B1 by the angular displacement motor 55, the seating portion 10 is angularly displaced from the reference position toward the angular displacement position, and at time t7, the detection signal of the first sensor 66 is low level. become.

  When the seating portion 10 is angularly displaced to the angular displacement position, the controller 124 stops the angular displacement motor 55 when the pressing of the first button 121A is released at time t9. Here, at time t9, the pressing of the first button 121A is released, but when the detection signal of the second sensor 67 becomes high level, the control unit 124 stops the angular displacement motor 55.

  At time t10 when a predetermined time T5 has elapsed from time t9, the control unit 124 stops the current applied to the first and second solenoid units 74 and 94. As a result, the first and second locking pieces 72 and 92 are moved from the retracted position to the locking position, and the seat portion 10 can be locked at the angular displacement position, and wasteful power consumption is suppressed. be able to.

  When the second button 121B is pressed at time t11, the control unit 124 provides the angular displacement motor 55 with a current for moving the seating unit 10 in the direction of the arrow B1. As a result, the seat portion 10 is angularly displaced in the direction of the arrow B1 by the angular displacement motor 55. Thus, by angularly displacing the seating portion 10 from the angular displacement position in the direction of the arrow B1, the second locking piece 92 and the locked portion 101 can be reliably separated, and the second locking piece 92 is obtained. Can be easily moved from the locking position to the retracted position.

  At time t12 when a predetermined time T6 has elapsed from time t11, the control unit 124 stops the angular displacement motor 55 and applies current to the first and second solenoid units 74 and 94. As a result, the first and second locking pieces 72 and 92 can be moved from the locking position to the retracted position, and the locking of the seating portion 10 at each displacement position is released. An angular displacement is possible. The predetermined time T6 is selected to be about 5 seconds.

  At time t13 when a predetermined time T7 has elapsed from time t12, the control unit 124 provides the angular displacement motor 55 with a current for moving the seating unit 10 in the direction of the arrow B2. As a result, the seat 10 is angularly displaced in the direction of the arrow B2 by the angular displacement motor 55.

  When the seating portion 10 is angularly displaced in the direction of the arrow B2 by the angular displacement motor 55, the seating portion 10 is angularly displaced from the angular displacement position toward the reference position, and the detection signal of the second sensor 67 is low level at time t14. become.

  When the seating section 10 is angularly displaced to the reference position and the second button 121B is released at time t15, the control section 124 stops the angular displacement motor 55. Here, the pressing of the second button 121B is released at time t15, but when the detection signal of the first sensor 66 becomes high level, the control unit 124 stops the angular displacement motor 55.

  At time t <b> 16 when a predetermined time T <b> 8 has elapsed from time t <b> 15, the control unit 124 stops the current applied to the first and second solenoid units 74 and 94. As a result, the first and second locking pieces 72 and 92 are moved from the retracted position to the locking position, and the seat portion 10 can be locked at the reference position, and wasteful power consumption is suppressed. Can do.

  When the pressing of the second button 121B is released, it is the time when the second button 121B is pressed, and when the second button 121B is continuously pressed, at a time t17 when a predetermined time T9 has elapsed from the time t15. The control unit 124 applies an electric current for moving the elevator body 9 in the descending direction A2 to the lifting motor 117, and rotationally drives the lifting motor 117. At time t7, the upper floor arrival signal becomes low level.

  When the elevator main body 9 reaches the getting-on / off position on the lower floor 4 and the pressing of the second button 121B is released at time t18, the control unit 124 stops the angular displacement motor 55. Here, at time t18, the pressing of the second button 121B is released, but the control unit 124 stops the raising / lowering motor 117 according to the lower layer position command given from the permission unit 123. It is possible to prevent the lifting motor 117 from being overloaded in an attempt to move further in the descending direction A2 from the position.

  As described above, in the stair lift 1, the control unit 124 controls the angular displacement motor 55 in accordance with the operation command input from the input unit 121, so that the seating unit 10 is the front of the seating unit 10. 9 and a reference position facing in a direction substantially perpendicular to the first axis L1, and an angular displacement in which the front surface of the seating portion 10 is angularly displaced about the first axis L1 from the reference position toward the upper floor 5 side. Angular displacement over the position. When the seating portion 10 is at the reference position, the user seated on the seating portion 10 is sideways with respect to the traveling direction. In this state, the elevator main body 9 is moved along the guide rail 8 to thereby increase the stairs. Space saving of the elevator 1 can be achieved. When the seating portion 10 is at the angular displacement position, the user seated on the seating portion 10 faces the upper floor 5 side, so that the user can sit on the upper floor 5 where safety is required when getting on and off. It is easy to get on and off, and you can get on and off safely. The user can angularly displace the seating section 10 by simply pressing any one button of the main body input section 121a, the lower floor input section 121b and the upper floor input section 121c provided in the seating section 10. Convenience can be improved.

  The control unit 124 receives a permission command that is given when the elevator body 9 is at the loading position of the upper floor 5 from the permission section 123 having a function of detecting whether the elevator body 9 is at the loading position of the upper floor 5. Accordingly, the operation of the angular displacement motor 55 is controlled. When the permission command is not given from the permission unit 123, the control unit 124 places the first locking piece 72 in the locking position without applying a current to the first solenoid unit 74, so that the reference of the seating unit 10 is obtained. The displacement around the first axis L1 from the position is prevented. Thus, when the elevator main body 9 is not in the riding position of the upper floor 5, the angular displacement from the reference position is prevented, and even if the angular displacement motor 55 tries to angularly displace the seating portion 10 undesirably, the seating portion Since the angular displacement of 10 is prevented, the angular displacement of the seating portion 10 during traveling on the guide rail 8 is reliably prevented, and the user can be transported more safely.

  In addition, when a permission command is given from the permission unit 123, the control unit 124 supplies current to the first and second solenoid units 74 and 94 so that displacement around the first axis L1 from the reference position of the seating unit 10 is possible. And the first and second locking pieces 72 and 92 are moved from the locking position to the retracted position. Therefore, when the elevator body 9 is in the loading position on the upper floor 5, the operation command from the input unit 121 is used. Thus, the seating portion 10 can be angularly displaced to the angular displacement position. Thereby, when the elevator main body 9 is at the mounting position on the upper floor 5, the seating portion 10 can be angularly displaced to the angular displacement position, so that the user can easily get on and off.

  Further, when the seating unit 10 is angularly displaced from the reference position to the angular displacement position, the control unit 124 applies current to the second solenoid unit 94 to move the second locking piece 92 from the retracted position to the locking position. The angular displacement of the seating portion 10 at the angular displacement position around the first axis L1 is prevented, and the angular displacement from the angular displacement position of the seating portion 10 when the seating portion 10 is angularly displaced to and from the angular displacement position. Is prevented, and the user can get on and off more safely.

  Further, the control unit 124 controls the angular displacement motor 55 in accordance with the detection signals respectively given from the first and second sensors 66 and 67, and the angular displacement motor 55 is angularly displaced from the reference position to the angular displacement position. When the seating portion 10 is detected at the angular displacement position by the detection signal of the second sensor 67, the angular displacement motor 55 is stopped and the angular displacement motor 55 moves from the angular displacement position to the reference position. When the first sensor 66 detects that the seating portion 10 is at the reference position, the angular displacement motor 55 is stopped, so that the range between the reference position and the angular displacement position is greatly exceeded. Thus, the seat portion 10 can be prevented from being angularly displaced, and safety can be improved.

  As described above, the stair lift 1 is a chair-type stair lift in which the seating unit 10 is angularly displaced by electric power with high convenience, and the user can get on and off with peace of mind, thereby improving convenience.

  In the above-described embodiment, the guide rail 8 is installed on the stairs 6. However, in another embodiment of the present invention, the guide rail 8 may be installed on the slope 7 or the wall 7 facing the stairs 6. In addition, the guide rail 8 may include a curved line as well as a straight line. In this case, for example, the guide rail is moved by a roller so that the elevator body 9 can travel on the curved guide rail. What is necessary is just to set it as the structure which carries out by pinching and rotating a roller.

  In the above-described embodiment, the predetermined angle θ2 is selected to be 90 °. However, in another embodiment of the present invention, the predetermined angle θ2 may be selected from 60 ° to 90 °. Even if such an angle is selected, the user can easily move up and down on the seating portion 10 at the getting-on / off position of the upper floor 5, so that the same effect as that of the above-described embodiment can be obtained.

  In another embodiment of the present invention, the first and second sensors 66 and 67 described above may be realized by, for example, a magnetic sensor, an ultrasonic sensor, or a mechanical switch. In the case of using a magnetic sensor, for example, a permanent magnet is attached to the hollow frame member 30, and a change in the magnetic field generated by the proximity or separation of the permanent magnet may be detected.

  In another embodiment of the present invention, the first and second locking pieces 72 and 92 may be angularly displaced by an electric motor, respectively. When the first and second locking pieces 72 and 92 are angularly displaced by an electric motor, the first and second locking pieces 72 and 92 are directly rotated around the fourth axis L4 and the fifth axis L5, respectively. It may be configured to drive, or may be configured to drive via a speed reducer.

It is the side view which looked at the stair lift 1 of one embodiment of the present invention from the upper floor 5 side. 2 is a front view of a stair lift 1 installed on a stair 6 of a building 3. FIG. FIG. 3 is a rear view of the seating unit 10. It is a front view which fractures | ruptures and shows the connection part of the elevator main body 9 and the seating part 10. FIG. It is sectional drawing seen from the cut surface line VV of FIG. It is a front view which shows a part of stairlift 1 when the seating part 10 is arrange | positioned in an angular displacement position in the state which stopped the raising / lowering body 100 at the boarding / alighting position of the upper floor 5. FIG. It is a top view of the part shown in FIG. FIG. 8A is a partial cross-sectional view as viewed from the cutting plane line VIII-VIII in FIG. 1, and FIG. 8B is a plan view of the hollow frame member 30 around the first axis L1 in FIG. FIG. 5 is a diagram showing the angular displacement. FIG. 9 is a cross-sectional view taken along the section line IX-IX in FIG. 8 (1), and FIG. 9 (1) shows the first locking piece 72 of the first displacement prevention unit 71 arranged at the locking position. 9 (2) is a view showing the first locking piece 72 of the first displacement prevention portion 71 arranged at the retracted position. 10 (1) is a cross-sectional view as viewed from the cutting plane line Xa-Xa in FIG. 9 (1), and FIG. 10 (2) is a cross-sectional view as viewed from the cutting plane line Xb-Xb in FIG. 9 (2). is there. FIG. 11 is a cross-sectional view taken along the section line XX of FIG. 8B, and FIG. 11A shows the second locking piece 92 of the second displacement blocking portion 91 arranged at the locking position. 11 (2) is a diagram showing the second locking piece 92 of the second displacement prevention unit 91 arranged at the retracted position. 12 (1) is a cross-sectional view seen from the cutting plane line XIa-XIa in FIG. 11 (1), and FIG. 12 (2) is a cross-sectional view seen from the cutting plane line XIb-XIb in FIG. 11 (2). is there. It is a block diagram which shows the electrical structure of the stair lift 1. 3 is a timing chart showing the operation of the stair lift 1.

Explanation of symbols

1 Stair elevator 1
DESCRIPTION OF SYMBOLS 8 Guide rail 9 Lifting machine body 10 Seating part 55 Angular displacement motor 66 1st sensor 67 2nd sensor 71 1st displacement prevention part 91 2nd displacement prevention part 107 Lifting motor 121 Input part 123 Permitted part 124 Control part

Claims (3)

Guide rails installed on stairs, ramps or walls facing stairs;
An elevator body that travels along the guide rail;
The elevator body is provided so as to be angularly displaceable about a substantially vertical axis, and a seating section on which a user sits,
The seating portion includes a reference position in which a front surface of the seating portion is substantially perpendicular to a traveling direction of the elevator body and a direction in which the axis extends, and the front surface of the seating portion from the reference position toward the upper floor side. A drive unit that angularly displaces between an angular displacement position that is angularly displaced about an axis; and
An input unit for inputting an operation command;
A displacement blocking portion capable of blocking angular displacement around the axis from the reference position of the seating portion;
In accordance with an operation command from the input unit, a control unit that controls the elevator body, the drive unit, and the displacement prevention unit,
A permission unit that gives a permission command to the control unit when the elevator main body is at the riding position on the upper floor,
When the permission command is not given from the permission unit, the control unit controls the displacement blocking unit to block the displacement of the seating portion from the reference position around the axis, and the permission command is given from the permission unit. A seat lock device for a stair lift, wherein the displacement preventing portion is controlled so that the displacement of the seating portion from the reference position around the axis is possible. A second displacement blocking portion capable of blocking angular displacement around the axis from the angular displacement position of the seating portion;
The controller is configured to prevent a second displacement so as to prevent displacement of the seating portion from the angular displacement position around the axis when the seating portion is angularly displaced from a reference position to an angular displacement position by the seating portion driving unit. The seat lock device for a stair lift according to claim 1, wherein the seat lock device is controlled. A position detection unit that detects a position of the seating unit around the axis;
The control unit detects the presence of the seating portion at the angular displacement position by the position detection unit when the seating portion is angularly displaced by the drive unit from a reference position to an angular displacement position. When the seating portion is angularly displaced from the angular displacement position to the reference position by the driving portion, the driving portion is stopped when the position detecting portion detects that the seating portion is at the reference position. The seat lock device for a stair lift according to claim 1 or 2.

Images