JP4995593B2 - Chair-type stair lift operating system - Google Patents

Description

  The present invention is a chair-type stair lift equipped with a rail storage device that can be raised and lowered while sitting on a chair and can be shortened by folding the end of the lower floor of the rail that guides the lift of the chair. The present invention relates to an operation system for a chair-type stair lift that can ensure the safety of a user and a nearby person when the rail storage device is folded to the storage position and pulled out to the extended position.

  As a welfare device for people who have difficulty climbing up and down stairs, a chair-type stair lift that allows you to go up and down just by sitting on a chair is installed in parallel with rails that incline along the walls of the stairs in the same way as the stairs. The chair is movably attached to this rail with grooved wheels, the switch is operated while sitting on the chair, the chair moves up and down along the rail by activating the lifting mechanism of the chair, and it sits on the chair The stairs can be raised and lowered in the state.

  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).

In the chair-type stair lifting device equipped with such a rail storage device, an operation system for operating the movable rail includes a method for completely separating the lifting operation of the chair and the operation of the moving rail, and a method for lifting the chair. There is a method of operating the movable rail in conjunction with the operation.
JP-T-2002-527324 Japanese Patent Laid-Open No. 2001-226057

  By the way, in the chair type stair lifting device provided with the rail storage device, in the case of the former operation system that completely separates the lifting operation of the chair and the operation of the movable rail, the operation and the movable rail for lifting the chair during the operation There are problems that two operations for operating the device are required each time, and when the user is an elderly person or a disabled person, the two operations can be felt troublesome.

  In addition, in the case of the latter operation system that activates the movable rail in conjunction with the operation to raise and lower the chair, it is considered that the movable rail operates when the user cannot see it, and there are people on the lower floor of the stairs There is a problem of lack of safety.

  In addition, when the chair enters the part in the folded state in which the movable rail is accommodated, the chair or the user may collide with the movable rail, leading to a serious accident.

  Furthermore, there is a concern about a collision accident when a person other than the operator unexpectedly enters the movable range when the movable rail is operated.

  In addition, when the movable rail is operated, the operation may be stopped and left unattended. If the movable rail is stopped at a position in the middle, there is a risk of unexpected collision.

  Accordingly, an object of the present invention is to provide an operation system for a chair type stair lift that has both safety and operability at the time of folding and pulling out a movable rail in a chair type stair lift that employs a rail storage device. is there.

  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 and the lower floor end side is a movable rail, and the movable rail is rotated between the extended position with respect to the fixed rail and the upper storage position of the fixed rail. In the chair type stair lift that can be made to fold, when folding the movable rail to the upper storage position, by pressing one operation button, first, the chair is automatically moved to a safe position on the rail, Then, the structure which folded the movable rail is employ | adopted.

  In the folded state where the movable rail is in the stowed position in the middle of the rail and the chair, the chair is stopped at that position by detecting the chair moving to the movable rail side along the rail, and the chair is the stowing part of the movable rail A safety device that prohibits entry into the vehicle is provided, and this safety device is a proximity switch attached to the chair, and a detector provided at a position set at a specific location in the middle of the upper part of the rail to operate this proximity switch. This detection body is pushed out to the position where the proximity switch of the chair operates when the movable rail is folded and not in the drawer position by the electromagnetic solenoid and the spring, and conversely, the movable rail is pulled out. When it is, the structure should be designed so that the chair can be passed through so that it does not act on the proximity switch. Kill.

  Further, a structure may be adopted in which a signal sound for alerting is emitted during start-up, completion, mid-operation, etc., when the movable rail is folded to the storage position and pulled out to the extended position.

  Here, the rail has a substantially cylindrical shape with an open bottom and has a cross-sectional shape with a chain rack and rack provided on the lower surface of an intermediate plate provided inside, and is fixed using a post on the stairs along the wall of the stairs. The chair, which is arranged and attached to the rail with a groove-shaped wheel, moves up and down along the rail by engaging the pinion of the lifting mechanism with the chain rack and activating the lifting mechanism.

  The rail storage device divides a portion near the end located on the lower floor side of the rail arranged along the wall surface of the stairs so as to guide the up-and-down movement of the chair, and the upper floor from the divided portion of the rail. The side is fixed rail to the staircase, the lower floor end side is a movable rail, and the movable rail is extended to the fixed rail at the split side end of the fixed rail and the movable rail. The fixed side mounting plate and the movable side mounting plate are pivoted to a support shaft fixed at one end to the fixed side mounting plate, and the other end is pivoted to a support shaft fixed to the movable side mounting plate. The rotating arm is connected with a stationary rotating arm, and the rotating arm is undulated and swung by a rotational drive mechanism provided on the fixed side mounting plate. The movable rail pivoted on the other end of the rotating arm is extended with respect to the fixed rail. Position of the fixed rail And it is adapted to pivot between the parts storage position.

  The above operation buttons are equipped with a folding switch and a drawer switch, which are installed only on the lower floor side of the stairs, so that the movable rail can be operated while visually checking the safety. When the folding switch is turned on, the chair moves to a safe standby position and stops, and then the movable rail is folded to the storage position.

  The detection device of the safety device is pushed out by the spring to the position where the proximity switch of the chair operates when the movable rail is folded and not in the drawer position by the electromagnetic solenoid and spring provided on the case, When the rail is in the drawer position, the electromagnetic solenoid is pulled into a position that does not act on the proximity switch so that the chair can pass through.

  According to this invention, the lower floor side end part of the rail for guiding the chair is a movable rail, and the movable rail is rotated between the extended position with respect to the upper floor side fixed rail and the upper storage position of the fixed rail. When the movable rail is folded to the upper storage position, the chair is automatically moved to the safe position of the rail with one operation button, and then the movable rail is moved. Because it is folded, when folding the movable rail, you can first wait the chair in a safe position away from the movable rail so that it does not affect the folding of the movable rail at all, and this is one operation button Therefore, operability and safety are improved, and even if the user is an elderly person or a disabled person, the troublesomeness can be eliminated.

  In addition, the safety device provided on the rail and the chair prohibits the chair from entering the part with the movable rail folded into the storage position, so that the chair or the user collides with the movable rail. Accidents can be prevented from occurring.

  In addition, an alarm sound is generated during the start, completion, and operation of the movable rail. Occurrence can be prevented.

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

  As shown in FIGS. 1 to 3, the chair-type stair lift 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 staircase A to the column 3 fixed to the staircase A. A chair 4 is attached to the upper and lower rails 2.

  As shown in FIG. 5, 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 6 is provided on the lower surface of an intermediate plate 5 provided inside. The chair 4 attached with the wheel 7 is moved up and down along the rail 2 by engaging the pinion 9 of the lifting mechanism 8 operated by the power source provided in the chair 4 with the chain rack 6 and starting the lifting mechanism 8. It will be.

  The above-described upper and lower rails 2 are fixed rails in which the middle of the end portion located on the lower floor side is divided at the same vertical position at a predetermined length from the end portion, and the upper floor side is fixed to the staircase A from the divided portion. 2a, the lower floor end side is a movable rail 2b, and the mounting plates 10 and 11 using steel plates are fixed at the position on the wall surface B side of the staircase A at the divided side ends of the fixed rail 2a and the movable rail 2b, respectively. ing.

  The mounting plate 10 fixed to the upper and lower fixed rails 2a is supported at both ends by columns 12 fixed on the staircase A, and the column 12 supports the load applied to the divided side end of the fixed rail 2a. At the same time, the fixed-side mounting plate 10 and the movable-side mounting plate 11 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 10 and 11 and a bracket 13 fixed to the movable side mounting plate 11 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 10 and the movable-side mounting plate 11 are connected by a rotating arm 14, a rotating drive mechanism 15 for the rotating arm 14 is mounted on the fixed-side mounting plate 10, and the rotating arm 14 is undulated by the rotating drive mechanism 15. 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 14, a posture holding mechanism 16 for holding the movable rail 2 b rotated by swinging of the rotary arm 14 in a constant posture is housed in a concealing manner.

  The rotating arm 14 uses two steel plates, 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. It is pivotally supported via a bearing 18 on a support shaft 17 fixed so as not to rotate by welding at a position between the upper and lower fixed rails 2a at a substantially central portion of the plate 10, and the other end is as shown in FIG. The support shaft 19 is fixed to the support shaft 19 fixed by welding at a position between the upper and lower movable rails 2b at the substantially central portion of the movable-side mounting plate 11 via a bearing 20, and the support shaft 17 of the fixed-side mounting plate 10 is swung around the fulcrum. By moving, the movable rail 2b is rotated with respect 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 rotary drive mechanism 15 for swinging the rotary arm 14 fixes the geared motor 21 to the fixed side mounting plate 10 and rotates to the small-diameter drive sprocket 22 of the motor 21 and the support shaft 17 fixed to the fixed side mounting plate 10. As shown in FIG. 4A, the large-diameter sprocket 23 that is attached is interlocked with the chain 24, and the end of the large-diameter sprocket 23 and the rotating arm 14 on the side of the fixed rail 2a are integrally fixed by welding. By rotating the large-diameter sprocket 23 by decelerating, the rotary arm 14 is swung around the support shaft 17 on the fixed rail 2a side as a fulcrum.

  As shown in FIGS. 4A and 4B, the posture holding mechanism 16 has sprockets 25 and 26 attached to both support shafts 17 and 19 between the two rotary arms 14 with respect to the support shafts 17 and 19, respectively. As shown in FIG. 2, the endless chain 27 is wound around a plurality of intermediate sprockets 28 provided between the two rotating arms 14 between the sprockets 25 and 26 at both ends as shown in FIG. The endless chain 27 is also swung integrally when the rotating arm 14 is swung, and the meshing position of the endless chain 27 is changed with respect to the sprocket 25 that cannot rotate with respect to the fixed support shaft 17. By rotating the chain 27, the movable side support shaft 19 and the movable side mounting plate 11 fixed thereto are rotated, whereby the movable rail 2b is substantially replaced with the fixed rail 2a. And it is adapted to pivot in a posture in which the line.

  On the fixed side support plate 10, the movable rail 2b pushes up and supports the end of the rotating arm 14 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. , A cylinder 29 that slows down, a limit switch 30 that stops the motor 21 by detecting the standing of the rotary arm 14 at the storage position of the movable rail 2b, and is movable in an extended state of the movable rail 2b with respect to the fixed rail 2a. A limit switch 31 for detecting the side edge of the side mounting plate 11 and stopping the motor 21 is provided.

  The rail storage device is covered and concealed with covers 32 and 33, respectively, as shown in FIGS.

  In the chair type stair lift provided with the rail storage device as described above, the operation system for raising and lowering the chair 4 and actuating the movable rail 2b is such that when the movable rail 2b is folded to the upper storage position, the chair 4 is first moved to the rail 2 The movable rail 2b is in the stowed position on the chair 4 with one operation button 34 that automatically moves to the safe rising standby position, and then folds the movable rail 2b. In the state, by detecting the chair 4 moving to the movable rail 2b side along the rail 2, the chair 4 is stopped at that position, and the safety device 35 prohibits the chair 4 from entering the storage portion of the movable rail 2b. When the movable rail 2b is folded to the retracted position and pulled out to the extended position, a signal sound for alerting is given at the start, completion, during operation, etc. It has become way.

  As shown in FIGS. 8 and 9, the operation button 34 includes a folding switch 34 a and a drawer switch 34 b and is installed only on the lower floor side of the stairs A, and operates the movable rail 2 b while visually checking safety. When the folding switch 34a of the operation button 34 is turned on, the chair 4 moves to the safe standby position set at the raised position of the rail 2, and this is the limiter provided on the rail 2 side. It stops by detecting with a switch etc. Then, it energizes to the motor 21 of a rail storage apparatus, and the movable rail 2b will be folded by the storage position.

  As shown in FIG. 6, the safety device 35 is formed by a proximity switch 36 attached to a chair and a detection body 37 provided at a specific location in the middle of the upper portion of the rail 2 in order to operate the proximity switch 36. As shown in FIG. 9, the detection body 37 is connected to an electromagnetic solenoid 39 in a case 38 fixed to the fixed rail 2 a, and is always directed toward the chair 4 by a spring 40 that is contracted between the detection body 37 and the case 38. In the state where the protruding elasticity is energized and the movable rail 2b is folded and not in the extended position, the electromagnetic solenoid 39 is de-energized and the proximity switch 36 of the chair is activated by the spring 40 as shown in FIG. When the movable rail 2b is in the extended position, the chair 4 passes by energizing the electromagnetic solenoid 39 as shown in FIG. 9B. Kill As has been pulled into position not acting on the proximity switch 36.

  The operation system of the chair type stair lift of the present invention is configured as described above. When the chair type stair lift 1 is used, the solid line in FIG. 1 and the tip of the fixed rail 2a as shown in FIG. 2 and FIG. The movable rail 2b is arranged in an extended shape. In each drawing, the movable rail 2b is linear, but may be curved downward depending on the staircase conditions.

  In this state, the joint between the fixed rail 2a and the movable rail 2b is such that the rear end of the movable rail 2b hits the tip of the fixed rail 2a, the side edges of both the mounting plates 10 and 11 abut, and the movable side mounting plate 11 is connected to the lower floor of the stairs, the rack 6 of the rail 2 is extended, and the fixed rail 2a and the movable rail 2b are connected to each other. The chair 4 that moves up and down along the line can enter the movable rail 2b from the fixed rail 2a, and can be lowered to a portion on the lower floor of the stairs A.

  Next, FIG. 10 which shows the basic operation | movement when retracting the movable rail 2b, and FIG. 11 which shows the basic operation | movement when pulling out the movable rail 2b about the raising / lowering motion of the said chair 4, and operation of the movable rail 2b of a rail storage apparatus. This flowchart will be mainly used to explain.

  When the movable rail 2b is an extension of the fixed rail 2a and the movable rail 2b is folded to the storage position in the pulled-out state shown in FIG. 2 or 6, it is installed on the lower floor side of the stairs A as shown in FIG. If the folding switch 34a of the button 34 is continuously pressed, the lifting mechanism 8 provided in the chair 4 is operated wirelessly, the motor is energized, the chair 4 starts to rise along the rail 2, and the upper standby position of the rail 2 is reached. Arrived and stopped.

  While the chair 4 is raised, a signal sound such as an alarm sound sounds intermittently several times, and an arrival signal sound is also generated when the chair 4 arrives at the standby position.

  When the chair 4 arrives at the standby position, if the folding switch 34a is continuously pushed or pushed again, the motor 21 of the rail storage device is energized, and the folding operation of the movable rail 2b is started, and the support shaft 17 is rotated around the fulcrum. The arm 14 rotates upward, and the movable rail 2b is lifted by the support shaft 19 and rotates upward of the fixed rail 2a.

  During the start and operation of the folding operation, a signal sound such as an alarm sound is intermittently emitted several times. If the hand is released from the folding switch 34a during the operation, the power supply to the motor 21 of the rail storage device is cut off and movable. The rail 2b stops halfway, a continuous signal sound sounds, the operation continues when the folding switch 34a is pressed again, the folding of the movable rail 2b in the storage position is completed, the motor 21 of the rail storage device stops, An arrival signal sounds.

  In the retracted state of the movable rail 2b, the electromagnetic solenoid 39 of the safety device 35 is de-energized, and the detection body 37 in the retracted position becomes the protruding position as shown in FIG.

  The power source of the chair 4 in the standby position is a battery independent of the rail storage device, so the user sits on the chair 4 waiting on the upper floor of the stairs, turns on the lowering switch, and lowers the stairs A In this case, the chair 4 descends along the rail 2, but the detection body 37 of the safety device 35 arranged at a safe position above the rail 2 is in the protruding position as described above. When the proximity switch 36 of the moving chair 4 faces the detection body 37, the proximity switch 36 is activated and the motor of the lifting mechanism 8 is de-energized, and the chair 4 stops at that position, whereby the movable rail 2b. This prevents accidents caused by collisions.

  Next, in the folded state of FIG. 3 and FIG. 8 in which the movable rail 2b is accommodated, when the movable rail 2b is set to a drawer position which is an extension of the fixed rail 2a, as shown in FIG. If the drawer switch 34b of the operation button 34 that is installed on the floor side is continuously pressed, the motor 21 of the rail storage device is energized, the drawer operation of the movable rail 2b is started, and the rotary arm 14 rotates downward with the support shaft 17 as a fulcrum. The movable rail 2b rotates downward.

  During the start and operation of the drawer operation of the movable rail 2b, a signal sound such as an alarm sound sounds intermittently a plurality of times. If the hand is released from the drawer switch 34b during this operation, the motor 21 of the rail storage device is energized. , The movable rail 2b stops halfway, a continuous signal sounds, the operation continues when the drawer switch 34b is pressed again, and the movable rail 2b is extended to the fixed rail 2a. The motor 21 stops and an arrival signal tone sounds.

  When the movable rail 2b is pulled out, the electromagnetic solenoid 39 of the safety device 35 is energized, and the detection body 37 located at the protruding position becomes the retracted position as shown in FIG. 9B.

  If the drawer switch 34b is continuously pressed or pressed again, the chair 4 at the standby position starts to descend along the rail 2, and when the chair 4 begins to descend, a signal sound sounds intermittently several times, and the chair 4 is movable. When it arrives at the lower end of the rail 2b, the limit switch or the like detects this and the chair 4 stops and an arrival signal sound sounds.

Front view of the chair-type stair lift of the present invention with the movable rail in the extended position as seen from the stair wall surface Enlarged front view from the staircase wall side showing the movable rail of the rail storage device in the extended position The front view seen from the staircase wall side which shows the folded state which stored the movable rail of a rail storage device Fig. 2 is an enlarged vertical side view taken along the line aa in Fig. 2; Fig. 2 (b) is an enlarged vertical side view taken along the line b-b in Fig. 2; Longitudinal sectional view showing the relationship between the rail and chair of the rail storage device Back view of the chair-type stair elevator from the opposite side of the staircase wall with an operating system The perspective view which shows the rail drawer state of a chair type stair lift The perspective view which shows the rail folding state of a chair type stair lift (A) is an enlarged cross-sectional plan view at a position where the detection body of the safety device protrudes, (b) is an enlarged cross-sectional plan view at a position where the detection body of the safety device is retracted. The flowchart figure which shows the basic operation when storing the rail of the operation system Flow chart showing the basic operation when pulling out the rail of the operation system

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 Intermediate plate 6 Chain rack 7 Wheel 8 Lifting mechanism 9 Pinion 10 Mounting plate 11 Mounting plate 12 Post 13 Bracket 14 Rotating arm 14 Rotating drive mechanism 16 Posture Holding mechanism 17 Support shaft 18 Bearing 19 Support shaft 20 Bearing 21 Geared motor 22 Small-diameter drive sprocket 23 Large-diameter sprocket 24 Chain 25 Sprocket 26 Sprocket 27 Endless chain 28 Intermediate sprocket 29 Cylinder 30 Limit switch 31 Limit switch 32 Cover 33 Cover 34 Operation button 34a Folding switch 34b Drawer switch 35 Safety device 36 Proximity switch 37 Detector 38 Case 39 Electromagnetic solenoid 40 Spring

Claims (2)

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 fixed rail (2a) on the upper floor side from the divided portion of ) is the fixed rail (2a) with respect to the staircase, the end of the lower floor is the movable rail (2b) , and the movable rail (2b) is an extended position with respect to the fixed rail (2a) When the movable rail (2b) is folded to the upper storage position in the chair type stair lift (1) that can be rotated between the upper storage position and the upper storage position of the fixed rail (2a) , one operation button is provided. By pushing (34) , first the chair (4) is automatically moved to a safe position on the rail (2) and then the movable rail (2b) is folded ,
The chair (4) that moves to the movable rail (2b) side along the rail (2) is detected in the folded state in which the movable rail (2b) is in the storage position in the middle of the rail (2) and the chair (4). By providing a safety device (35) that stops the chair (4) in that position and prohibits the chair (4) from entering the storage portion of the movable rail (2b). A proximity switch (36) attached to the chair (4) and a detection body (37) provided at a position set at a specific location in the upper part of the rail (2) to operate the proximity switch (36) When the movable rail (2b) is folded by the electromagnetic solenoid (39) and the spring (40) so that the proximity switch (36) of the chair (4) is not in the pulled out position, the detection body (37) is formed. In position to actuate In extruded, conversely, when the movable rail (2b) is in the extended position, the chair (4) so that can pass, that is adapted to being drawn to a position that does not act on the proximity switch (36) The operating system of the chair type stair lift (1) characterized. 2. A signal sound for alerting is emitted during start-up, completion, and operation during the folding operation of the movable rail (2b) to the storage position and the pull-out operation to the extended position. Operation system of chair type stair lift (1) as described in 1 .

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