JP5111885B2 - Rail storage device for chair type stair lift - Google Patents

Description

  The present invention relates to a rail storage device that can be shortened by folding an end portion on a lower floor side of a rail that guides raising and lowering of a chair in a chair type stair lifting device that can raise and lower stairs while sitting on a chair.

  As a welfare device for people who have difficulty climbing up and down stairs, a chair-type stair lifting device that allows you to move up and down by simply sitting on a chair is installed on a rail that tilts along the wall of the stairs in the same way as the stairs. The chair is movably attached to the rail, a chain rack or rack is provided on the rail along the length direction, and a pinion of the lifting mechanism provided on the chair is engaged with the chain rack or rack. The chair is moved along the rails by operating the switch in a state where the door is applied and activating the lifting mechanism, and the stairs can be raised and lowered while sitting on the chair.

  The chair type stair climbing device as described above is installed on the lower floor side of the stairs so that the lower end of the rail can be approached to the lower floor so that the chair can be smoothly boarded and exited without hindrance. The lower end of the guide rail protrudes from the wall surface of the stairs.

  Most chair-type stair lifts are installed in ordinary households, and the lower floor of the stairs is often a corridor through which people pass, and the lower end of the rail protrudes from the wall of the stairs to the floor as described above. If there is a danger of people tripping on the rail, the lower end of the rail projects, occupies the floor space on the lower floor of the stairs, and can be opened and closed freely when there are doors etc. There is a possibility that a failure such as inability to occur or a case where a chair type stair lifting device cannot be installed may occur.

  Conventionally, in order to eliminate the inconvenience as described above, the lower end of the rail is divided at a position of a predetermined length, and from the divided portion of the rail, the upper floor side is a fixed rail with respect to the staircase, and the lower floor end portion side is a movable rail. The movable rail is pivotally attached to the end of the fixed rail so that the movable rail can be changed to either an extended state of the fixed rail or a state where the fixed rail is lifted up. A rail storage device for a chair type stair lifting device has been proposed in which the protrusion of the rail to the lower floor of the stairs is eliminated by raising (see, for example, Patent Documents 1 and 2).

  The above-described rail storage device of Patent Document 1 fixes the movable rail to the tip of an arm attached to the end of the fixed rail so as to rotate up and down, and moves the arm up and down with a cylinder. The state is changed to either an extended state of the fixed rail or a raised state to the upper portion of the fixed rail.

In addition, the rail storage device of Patent Document 2 incorporates a slide member in the end portion of the fixed rail and a winding mechanism for moving the slide member in the length direction of the fixed rail, and swing arms provided at both ends of the slide member. If the movable rail is attached to the end of the fixed rail and the sliding member protrudes from the end of the fixed rail and the swinging arm is tilted in the direction of the fixed rail extension, the movable rail will be in the extended state of the fixed rail. The movable rail is positioned on the fixed rail by pulling and pulling up and swinging the swing arm.
JP-T-2002-527324 Japanese Patent Laid-Open No. 2001-226057

  By the way, the rail storage device of Patent Document 1 stores the movable rail in a vertically or obliquely forward state when the movable rail is in the storage position, so that the visual design is poor and the movable range of the movable rail is large. There is a problem.

  In addition, the rail storage device of Patent Document 2 protrudes with the end of the fixed rail sharpened in the storage state of the movable rail, which not only impairs the safety of stairs pedestrians, but also makes this rail storage device a rail part. The addition of the rail increases the width of the rail from the staircase wall and reduces the effective staircase width by about 50 mm, making it difficult to install on the lower staircases with a narrow staircase width that is common in Japanese houses, as well as a slide member and winding mechanism. Further, a swing arm or the like is required, and the structure becomes complicated.

  Therefore, the problem of the present invention is that the moving action of the movable rail can be reduced, and the retracted state of the movable rail becomes a state that fits visually, and the width of the staircase is narrowed by reducing the rail protruding width from the staircase wall surface. The object is to provide a rail storage device for a chair-type stair lift that can be installed on stairs around lower floors.

In order to solve the problems as described above, the present invention divides the middle of the rail located on the lower floor side of the rail arranged along the wall surface of the staircase so as to guide the up-and-down movement of the chair. The upper floor side from the divided part of the above is a fixed rail for the staircase, the lower floor end part side is a movable rail, and the movable rail is extended to the fixed rail at the divided side end of the fixed rail and the movable rail. The mounting plates whose side edges are in contact with each other are fixed, the fixed side mounting plate and the movable side mounting plate are pivoted to the support shaft fixed at one end to the fixed side mounting plate, and the movable side mounting plate at the other end the rotary arm locks pivot support shaft fixed to provided, together so as to rotate the winding spanned the chain between the support shaft of the support shaft and the other end side of one end of the rotating arm, the fixed-side mounting The rotating arm on the plate Is pivoted up and down around this support shaft at one end pivoted to the support shaft of the fixed-side mounting plate, and the movable rail pivoted at the other end of this rotating arm is placed in an extended position relative to the fixed rail. A rotation drive mechanism that rotates between the upper storage position of the fixed rail is mounted, and the support shaft fixed to the fixed mounting plate on one end side of the rotation arm is movable to the rotation arm by swinging the rotation arm. A posture holding mechanism that holds the movable rail that rotates by swinging of the rotating arm in a fixed posture by the phase difference between the rotating shaft and the support shaft that is fixed to the side mounting plate and pivoted to the other end of the rotating arm. The movable rail is configured to be rotated and stored in a posture substantially parallel to the upper position of the fixed rail .

  The posture holding mechanism is configured to be concealed inside the rotary arm, and the rotary arm is formed by a combination of two pieces, the posture holding mechanism is stored between the two, and the posture holding mechanism is The chain may be formed by winding the chain endlessly between sprockets fixed to both end support shafts of the rotary arm.

  Here, the rail has a cross-sectional shape in which a chain rack or a rack is provided along the length direction, and is fixedly disposed on the staircase using a support along the wall surface of the staircase. The chair attached in (1) is moved up and down along the rail by engaging the pinion of the lifting mechanism with the chain rack or the rack and activating the lifting mechanism.

  Each of the above mounting plates is fixed to the wall surface of the staircase with respect to the fixed rail and the movable rail, and the movable rails are in an extended position with respect to the fixed rail so that the side edges abut each other and support the load applied to the movable rail. At the same time, the fixed rail mounting plate is fixedly supported on the stairs by a support column, and the movable rail mounting plate is provided with a bracket for grounding to the lower floor of the stairs in the extended state of the fixed rail.

  The rotating arm has strength by using two steel plates, has a space between the opposing surfaces by sandwiching the spacer, and narrows the overall width by concealing the posture holding mechanism between them. ing.

  The rotary drive mechanism has a geared motor fixed to a fixed rail mounting plate, and a small-diameter drive sprocket of this motor and a large-diameter sprocket rotatably mounted on a support shaft fixed to the fixed rail mounting plate are interlocked with a chain. The fixed rail side end of the large-diameter sprocket and the rotary arm are fixed together, and the large-diameter sprocket is rotated by starting the motor, so that the rotary arm is swung around the support shaft on the fixed rail side as a fulcrum. ing.

  As described above, when the rotary arm and the posture holding mechanism are driven, if the motor of the rotary drive mechanism is disconnected and indirectly driven by the chain, the width of the rotary arm and the rotary drive mechanism can be reduced.

  The mounting plate on the fixed rail side pushes up and supports the end of the fixed rail side of the rotating arm in the extended state of the fixed rail to assist the rotation of the movable rail to the storage position and A slow cylinder is provided.

  The posture holding mechanism is formed by winding an endless chain via a plurality of intermediate sprockets between sprockets that are non-rotatably mounted on both support shafts between two rotating arms, and swinging the rotating arms. Sometimes, the endless chain meshes with the sprocket that cannot rotate with respect to the fixed side support shaft, causing the endless chain to rotate, thereby the movable side support shaft and the mounting plate fixed thereto. The movable rail is rotated in a posture substantially parallel to the fixed rail.

  According to the present invention, the movable side mounting plate is fixed to the divided rail end portions of the fixed rail and the movable rail, respectively, with the movable rail extending from the fixed rail and the side edges thereof being in contact with each other. And the fixed-side mounting plate are connected by a rotating arm that swings up and down around the support shaft of the fixed-side mounting plate, and rotates inside the rotating arm due to the phase difference between the support shafts at both ends due to the swinging of the rotating arm. Since the posture holding mechanism that holds the movable rail that rotates by swinging the arm in a fixed posture is housed, the movable rail is moved to the fixed rail extended position and the fixed rail upper storage position. By changing the movable rail to the storage position, when the chair type stair lifting device is not used, the rail can be prevented from protruding from the lower floor to the floor. Therefore, the safety of people walking on the lower floor of the stairs can be ensured, and the movable rail can be stored in a position substantially parallel to the fixed rail at the top of the fixed rail, so the moving action of the movable rail can be reduced, And the accommodation state of a movable rail will be in a state with good appearance.

  Further, the movable side mounting plate and the fixed side mounting plate are connected by a rotating arm, and the movable arm rotates inside the rotating arm due to the phase difference between both end support shafts due to the swinging of the rotating arm. Since the posture holding mechanism that holds the rails in a fixed posture is housed in a concealed shape, the entire structure can be made thin, and this reduces the width of the rail from the staircase wall by adopting two upper and lower rails. By saving space, it is possible to install a chair-type stair lifting device on the lower floor staircase with a narrow staircase width.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 6 and 7, the chair-type stair lifting device 1 is installed in a slanted manner by attaching a pair of rails 2 that are parallel in the vertical direction along the wall surface B of the stair A to the column 3 fixed to the stair A. A chair 4 is attached to the upper and lower rails 2.

  As shown in FIG. 4, the upper and lower rails 2 have a substantially cylindrical shape with an open bottom and a cross-sectional shape in which a chain rack 5 or a rack is provided on the lower surface of an intermediate plate provided inside, and grooves are formed in the upper and lower rails 2. The chair 4 attached with the wheel of the shape is moved up and down along the rail 2 by engaging the pinion of the lifting mechanism provided on the chair 4 with the chain rack 5 or the rack and activating the lifting mechanism.

  As shown in FIGS. 1 to 3, the upper and lower rails 2 described above are divided in the middle of the end portion located on the lower floor side at a position equal to the upper and lower sides of a predetermined length from the end portion, and the upper floor side is separated from the divided portion. The fixed rail 2a fixed to the staircase A, the lower floor end portion side is a movable rail 2b, and a steel plate is used at the position on the wall surface B side of the staircase A at the divided end portion of the fixed rail 2a and the movable rail 2b. Mounting plates 6 and 7 are fixed, respectively.

  The mounting plate 6 fixed to the upper and lower fixed rails 2a is supported by support columns 8 whose both ends are fixed on the staircase A, and supports the load applied to the divided end of the fixed rail 2a by the support columns 8. At the same time, the fixed-side mounting plate 6 and the movable-side mounting plate 7 fixed to the upper and lower movable rail 2b are in a state in which the side edges abut each other at the position where the movable rail 2b extends with respect to the fixed rail 2a. An abutting side edge of the mounting plates 6 and 7 and a bracket 9 fixed to the movable side mounting plate 7 so that the movable rail 2b contacts the lower floor of the staircase A in the extended state of the fixed rail 2a. It supports the applied load.

  The fixed-side mounting plate 6 and the movable-side mounting plate 7 are connected by a rotary arm 10, and a rotary drive mechanism 11 for the rotary arm 10 is attached to the fixed-side mount plate 6, and the rotary arm 10 is undulated by the rotary drive mechanism 11. By moving the movable rail 2b, the movable rail 2b can be rotated between a position extended with respect to the fixed rail 2a and a storage position positioned above the fixed rail 2a. In 10, a posture holding mechanism 12 for holding the movable rail 2 b rotated by swinging of the rotary arm 10 in a fixed posture is housed in a concealing manner.

  The rotating arm 10 uses two steel plates whose both ends are bent downward, and a spacer or a reinforcing material is sandwiched between them so that there is a gap between the opposing surfaces. As shown in FIG. The portion is a substantially central portion of the fixed-side mounting plate 6 and is pivotally supported via a bearing 14 on a support shaft 13 fixed so as not to rotate by welding at a position between the upper and lower fixed rails 2a. As shown in FIG. 5 (b), a support shaft 15 fixed by welding to a position between the upper and lower movable rails 2b at a substantially central portion of the movable side mounting plate 7 is fixed via a bearing 16 to support the fixed side mounting plate 6. By swinging around the shaft 13 as a fulcrum, the movable rail 2b is rotated relative to the fixed rail 2a between the extended position of the fixed rail 2a and the upper storage position of the fixed rail 2a.

  The rotating arm 10 has strength by using two steel plates, and has a space between the opposing surfaces by sandwiching the spacer, and the entire width of the rotating arm 10 by concealing the posture holding mechanism 12 therebetween. Can be narrowed.

A rotary drive mechanism 11 that swings the rotary arm 10 fixes a geared motor 17 to the fixed side mounting plate 6 and rotates to a small-diameter drive sprocket 18 of the motor 17 and a support shaft 13 fixed to the fixed side mounting plate 6. As shown in FIG. 5A, the large-diameter sprocket 19 that is attached is interlocked by a chain 20, and the large-diameter sprocket 19 and the end of the rotary arm 10 on the fixed rail 2a side are integrally fixed by welding, so that the motor 17 The large-diameter sprocket 19 is decelerated and rotated by the activation of the rotary arm 10 so that the rotary arm 10 is swung around the support shaft 13 on the fixed rail 2a side.
As described above, when the rotary arm 10 and the posture holding mechanism 12 are driven, if the motor 17 of the rotary drive mechanism 11 is disconnected and indirectly driven by the chain 20, the width of the rotary arm 10 and the rotary drive mechanism 11 is reduced. Will be able to.

As shown in FIGS. 5A and 5B, the posture holding mechanism 12 has sprockets 21 and 22 attached to both support shafts 13 and 15 between the two rotary arms 10 with respect to the support shafts 13 and 15. As shown in FIG. 2, the endless chain 23 is wound between the sprockets 21 and 22 at both ends via a plurality of intermediate sprockets 24 provided between the two rotating arms 10 as shown in FIG. Is formed .
That is, as shown in FIG. 5A, one end of the rotary arm 10 is pivotally supported (supported so as to be rotatable) by the support shaft 13 fixed to the fixed (rail) side mounting plate 6. On the other hand, as shown in FIG. 5B, the other end of the rotating arm 10 pivots (supports so as to be rotatable) a support shaft 15 fixed to the movable (rail) side mounting plate 7. Further, sprockets 21 and 22 are attached to the support shafts 13 and 15 by key grooves and are fixed so as not to rotate. The sprockets 21 and 22 fixed to the support shafts 13 and 15 are wound around the endless chain 23.
Therefore, when the rotary arm 10 swings and rotates around the support shaft 13 fixed to the fixed side mounting plate 6, for example, the movable side mounting plate 7 at the other end of the rotary arm 10 lifted by the rotation is The rotation starts in the vertical direction, but this rotation is blocked by the support shaft 13 of the fixed side mounting plate 6 connected by the endless chain 23.
That is, since the fixed side (mounting plate 6) support shaft 13 connected to the movable side (mounting plate 7) support shaft 15 by the endless chain 23 is fixed to the fixed side mounting plate 6, the fixed side mounting plate is supported. The meshing position between the sprocket of the shaft 13 and the endless chain does not change. Therefore, when the movable side mounting plate 7 rotates, the meshing position of the sprocket 22 and the endless chain 23 of the movable side support shaft 15 changes, and the endless chain 23 rotates due to the phase difference between the meshing positions . Thus, the movable side support shaft 15 and the movable side mounting plate 7 fixed to the movable side support shaft 15 are rotated, and the movable rail 2b is rotated while maintaining a posture substantially parallel to the fixed rail 2a.

On the fixed side support plate 6, the movable rail 2b pushes up and supports the end of the rotary arm 10 on the fixed rail 2a side in an extended state of the fixed rail 2a, and assists the rotation of the movable rail 2b to the storage position. The cylinder 25 for slowing down overturning, the limit switch 26 for detecting the standing of the rotary arm 10 at the storage position of the movable rail 2b and stopping the motor 17, and the movable rail 2b extending with respect to the fixed rail 2a are movable. A limit switch 27 for detecting the side edge of the side mounting plate 7 and stopping the motor 17 is provided.
In the rail storage device, the fixed side mounting plate 6 and the movable side mounting plate 7 are covered and concealed by covers 28 and 29, respectively, as shown in FIGS.

  The rail storage device of the present invention is configured as described above, and when the chair type stair lifting device is used, the movable rail 2b is arranged in an extended manner at the tip of the fixed rail 2a as shown by the solid line in FIG. . In each drawing, the movable rail 2b is linear, but may be curved downward depending on the staircase conditions.

  In this state, the rear end of the movable rail 2b hits the front end of the fixed rail 2a, the side edges of both mounting plates 6 and 7 abut, and the bracket 9 provided at the lower end of the front end of the movable side mounting plate 7 is a staircase. Since the rack chain 5 of the rail 2 is extended to the ground floor on the lower floor, the chair 4 can enter the movable rail 2b from the fixed rail 2a and descend to the part on the lower floor of the stairs A. Can be made.

  Next, when the chair type stair lifting device 1 is not used, the chair 4 is lifted along the rail 2 and reaches the standby position set on the upper floor side of the stair A as shown by the one-dot chain line in FIG. When the storage switch of the operation box placed at the appropriate position on the lower floor of the stairs A is pushed with the chair 4 electrically detected that the chair 4 is in the standby position, the motor 17 is activated and the small-diameter drive sprocket 18 rotates. Is transmitted to the large-diameter sprocket 19, the rotary arm 10 having one end fixed to the large-diameter sprocket 19 rotates upward with the support shaft 13 of the fixed side mounting plate 6 as a fulcrum. The support shaft 15 supported rotatably at the other end side performs a circular motion around the support shaft 13 of the fixed side mounting plate 6, and is a movable rail fixed to the support shaft 15 of the movable side mounting plate 7 so as not to rotate. 2b is the lower floor of Stair A Lifted from above, continue to rotate toward the upper fixed rail 2a.

  At this time, the cylinder 25 is stretched by the accumulated elasticity to push up the rotary arm 10 and reduce the load applied to the motor 17.

  At the time of the upward rotation of the rotary arm 10, the posture holding mechanism 12 also rotates the endless chain 23 together, and the endless chain 23 becomes unrotatable with respect to the fixed support shaft 13. When the meshing position is changed, the endless chain 23 is rotated. As a result, the movable side support shaft 15 and the movable side mounting plate 7 fixed thereto rotate around the axis of the support shaft 15. By moving, the movable rail 2b is raised and rotated to the storage position in a posture substantially parallel to the fixed rail 2a.

  When the movable rail 2b is rotated to the storage position, the motor 17 stops when the rotary arm 10 pushes the limit switch 26, and the movable rail 2b is in a posture substantially parallel to the upper position of the fixed rail 2a as shown in FIG. The protruding portion of the rail 2 from the lower floor wall surface B of the stairs A to the floor surface is eliminated, and safety against walking or the like of the lower floor surface of the stairs A can be ensured.

  When the chair-type stair lifting device 1 is used in a state where the movable rail 2b is stored in a position substantially parallel to the upper portion of the fixed rail 2a, the use switch of the operation box arranged at the appropriate position on the lower floor of the stair A is pressed. Then, the motor 17 reversely rotates and the rotation of the small-diameter drive sprocket 18 is transmitted to the large-diameter sprocket 19, and the rotary arm 10 having one end fixed to the large-diameter sprocket 19 is supported by the support shaft 13 of the fixed-side mounting plate 6. The support shaft 15 that is rotated downward about the fulcrum and supported rotatably at the other end of the rotary arm 10 performs a circular motion around the support shaft 13 of the fixed-side mounting plate 6, and the movable-side mounting plate. The movable rail 2b fixed to the support shaft 15 of 7 in a non-rotatable manner is rotated downward toward the lower floor surface of the stairs A.

  At the time of the downward rotation of the rotary arm 10, the posture holding mechanism 12 also rotates the endless chain 23 together, and the endless chain 23 becomes unrotatable with respect to the fixed support shaft 13. When the meshing position is changed, the endless chain 23 is rotated. As a result, the movable side support shaft 15 and the movable side mounting plate 7 fixed thereto rotate around the axis of the support shaft 15. By moving, the movable rail 2b is rotated to the lowered position in a posture substantially parallel to the fixed rail 2a.

  In the middle of this downward movement, the rotary arm 10 abuts on the cylinder 25, absorbs the impact when the cylinder 25 contracts, and can lower the movable rail 2b at a slow speed.

  When the movable rail 2b is lowered to the lowered position, the side edges of both mounting plates 6 and 7 come into contact with each other, the bracket 9 comes into contact with the floor surface, and the limit switch 27 detects the movable side mounting plate 7 to stop the motor 17. Then, the movable rail 2b is extended at the tip of the fixed rail 2a, and the chair 4 can enter the movable rail 2b from the fixed rail 2a, and can be lowered to the portion on the lower floor of the stairs A.

Front view of the rail storage device of the present invention with the movable rail in the extended position and the chair-type stair elevator from the staircase wall side Enlarged front view of the rail storage device viewed from the staircase wall with the movable rail in the extended position Longitudinal front view seen from the wall surface of the folded staircase containing the movable rails of the rail storage device Side view of the rail storage device with the expanded movable rail in the extended position (A) is an enlarged vertical side view taken along line aa in FIG. 2, and (b) is an enlarged vertical side view taken along line bb in FIG. A perspective view of the rail storage device with the movable rail in the extended position The perspective view of the folded state which stored the movable rail of a rail storage device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chair type stair lifting device 2 Rail 2a Fixed rail 2b Movable rail 3 Post 4 Chair 5 Chain rack 6 Mounting plate 7 Mounting plate 8 Post 9 Bracket 10 Rotating arm 11 Rotation drive mechanism 12 Posture holding mechanism 13 Support shaft 14 Bearing 15 Support shaft 16 Bearing 17 Geared motor 18 Small-diameter drive sprocket 19 Large-diameter sprocket 20 Chain 21 Sprocket 22 Sprocket 23 Endless chain 24 Intermediate sprocket 25 Cylinder 26 Limit switch 27 Limit switch 28 Cover 29 Cover

Claims (3)

Divided in the middle of the end nearer positioned on the lower floor side of the chair rails disposed along a wall surface (B) of the stair (A) to induce lift movement of (4) (2), the rail (2 ) , The upper floor side from the divided portion is a fixed rail (2a) for the staircase, the lower floor end side is a movable rail (2b) , and the fixed rail (2a) and the movable rail (2b) are separated at the divided side ends, mounting plate movable rail (2b) is a state abutting side edges to each other in an extended form of the position relative to the fixed rail (2a) and (6,7) respectively fixed, the fixed-side mounting plate (6) and the movable side mounting plate (7), sealed pivot on the support shaft which is fixed at one end to the fixed side mounting plate (6) (13), pivoted support shaft fixed to the movable side mounting plate (7) to the other end (15) A rotating shaft (10), and a support shaft (13) on one end side of the rotating arm (10); The chain (23) is wound around the support shaft (15) on the other end side so as to be wound and rotated , and the rotating arm (10) is fixed to the fixed side mounting plate ( 6). 6) of the support shaft (13) center is undulating oscillating the support shaft in the pivot seals one end side (13), fix the pivot locks movable rail (2b) on the other end of the rotary arm (10) mounting rail rotary drive mechanism for rotating between an extension shaped position and the upper receiving position of the fixed rail relative to (2a) (11), wherein the rotary arm (10), the swinging of the rotating arm (10) By the movement, the support shaft (13) fixed to the fixed side mounting plate (6) on one end side of the rotating arm (10) and the movable side mounting plate (7) are fixed to the other end of the rotating arm and pivoted. the phase difference between the dynamic support shaft (15), the rotating arm (10) The posture holding mechanism for holding the movable rail (2b) in a certain posture (12) provided to rotate with swing, generally parallel to the movable rail (2b) located on the lower floor side in the upper position of the fixed rail (2a) A rail storage device for a chair-type stair lift that is rotated and stored in a posture . The rail storage device for a chair type stair lift according to claim 1, wherein the posture holding mechanism (12) is stored concealingly inside the rotary arm (10) . The rotary arm (10) is formed by a combination of two sheets, and the posture holding mechanism (12) is accommodated between them, and the posture holding mechanism (12) is fixed to both end support shafts of the rotary arm (10) . The rail storage device for the chair type stair lift according to claim 1 or 2, wherein the chain (23) is wound in an endless state between the sprockets (21, 22) .

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