JP2010070330A - Seat rotating mechanism for chair type stairway elevator - Google Patents

Abstract

To simplify the lock and release operation for the rotation of the seat, the rotation of the seat can be surely performed, and the occurrence of a protruding portion to the outside of the seat is eliminated, thereby improving safety. The seat rotation mechanism of the chair type stair lift that can be provided is provided.
A seat is mounted on a rotation center shaft that is erected on an upper surface of an elevator body, and a solenoid that is fixed to the boss is attached by a boss so that the seat can be rotated about the rotation center shaft. A lock pin that is vertically moved by the solenoid 17 is provided, and an engaging portion that fixes the rotation of the seat 6 when the lock pin engages with the top plate 11 of the elevator body, and the orientation of the seat 6 is in the raising and lowering posture. It was arranged so as to be engaged when it was in the position and when it was in the position of getting on and off.
[Selection] Figure 2

Description

  The present invention relates to a seat rotation mechanism for a chair type stair lift that moves up and down along a guide rail. More specifically, the seat is rotatably attached to the main body of the lift. The present invention relates to a seat rotation mechanism that can rotate the seat to the floor side, and locks and releases the seat when the seat is in the up / down posture position and the getting-on / off posture position.

  As shown in FIG. 6, the general installation structure of the chair type stair lift 1 is that a bracket is installed on the step of the stair a, and a guide rail 2 is installed along the wall, and a guide roller 3 and The chair-type stair lift 1 is attached via a drive / guide mechanism 4 so as to move up and down along the guide rail 2.

  In such a chair-type stair lift 1, the seat 5 is facing sideways while the stairs are going up and down, and if you try to get on and off from such a seat facing sideways, there is a risk of falling or falling, The seat 6 of the chair 5 can be rotated to the floor side when arriving at the destination floor, particularly when arriving at the upper floor.

  Thus, in the chair type stair lift 1, when getting on and off, by rotating the seat 6 to the floor side, it is possible to get on and off in a wide space and improve safety.

  The seat rotation mechanism in the conventional chair type stair lift 1 is provided on the lower surface of the seat 6 so that the rotation shaft projects downward, and the rotation shaft is supported by a boss provided on the lift body 7 so as to receive a load. Can be rotated around the axis of the rotary shaft, and a lever is provided on the side surface portion of the seat 6, and a cam connected to the lever is provided in the engagement groove provided on the upper surface of the frame of the elevator body. The engaging groove is arranged so that the cam is engaged and disengaged when the seat is in the up / down posture position and in the getting on / off posture position.

  When the seat 6 is in the up / down posture position, the cam engages with the engaging groove and locks. When the lever is pulled in the on / off position, the engagement is released and the seat can be rotated to the on / off posture. The posture will be locked.

  In order to move up and down the stairs with the chair-type stair lift 1 as described above, a user sitting on a seat first moves up and down the stairs by operating a push button provided on the armrest of the seat, and moves up and down. After arriving, release the push button, then operate the lever on the side of the seat, release the lock and rotate the seat to get on and off.

  By the way, in the conventional sheet rotating mechanism as described above, there are two types of operation systems in one lifting operation. That is, the operation of the push button for raising and lowering provided on the armrest and the lever operation after stopping, but in actual use, the elderly people forget things, so they can not remember two types of operations and rotate the seat There are cases where people get on and off without doing it.

  Further, since the lever provided on the side surface portion of the seat is arranged so as to be easily operated, there is a risk that clothes or the like may be caught by the lever when getting on and off.

  Accordingly, an object of the present invention is to simplify the operation by solving the above-described problems by electrically performing a lock and release operation with respect to the rotation of the seat by an operation of a push button provided on an armrest. Accordingly, it is an object of the present invention to provide a seat rotation mechanism for a chair type stair lift that can reliably rotate the seat, eliminates the occurrence of a protruding portion outside the seat, and improves safety.

  In order to solve the above-described problems, the present invention attaches an elevator body to a guide rail installed along a staircase or an inclined road so as to travel along the guide rail, and attaches a seat to the upper part of the elevator body. A chair-type stair lift provided, wherein the seat is placed on a rotation center axis standing on the upper surface of the elevator body, and a boss provided on the back side of the seat so that the seat can rotate around the rotation center axis The solenoid fixed to the boss is provided with a lock pin that moves vertically with the solenoid, and the top plate of the elevator body is provided with an engaging portion that fixes the rotation of the seat by engaging the lock pin, A configuration is adopted in which the engaging portion is arranged so that the lock pin engages when the seat is in the up-and-down posture position and in the riding-on posture position.

  Further, the solenoid can be structured to operate so as to release the lock pin from the engaging portion by operating a push button provided on the seat.

  Furthermore, it is good also as a structure which has arrange | positioned the switch which electrically detects the lock pin engaged with this engaging part in the lower part of the engaging part provided in the top plate of the said elevator body.

  Here, the boss is fixed on the bottom horizontal plate of the bracket fixed to the back surface of the seat, and is externally fitted to the rotation center axis to support the load of the sheet and to rotate the sheet about the rotation center axis. The solenoid provided on the outer surface of the boss is fixed with the plunger facing downward so as to rotate integrally with the boss, and the lock pin connected to the lower end of the plunger is provided on the bottom horizontal plate. The holder is held so as to be movable up and down so as to penetrate the bottom horizontal plate. A rolling element is provided at the lower end of the holder so that the upper surface of the elevator body can be smoothly rotated.

  Further, the engaging portion provided on the top plate of the elevator body is formed by a circular hole into which the lock pin is fitted, and the seat is locked by fitting the lock pin into the circular hole by lowering due to its own weight. It becomes impossible to rotate, and the lock can be released by pressing the push button switch provided on the armrest of the seat, and the energized solenoid pulls out the lock pin from the circular hole by pulling up the plunger and the lock pin. .

  According to the present invention, the seat is attached to the rotation center shaft erected on the upper surface of the elevator body by the boss provided on the back side of the seat, and the lock pin vertically moved by the solenoid fixed to the boss is attached to the top of the elevator body. Since the engaging portion provided on the plate is engaged and disengaged, the seat that can be rotated can be locked / released in the seating posture and the lifting posture by one type of operation of the push button switch provided on the armrest of the seat. By simplifying the operation, it is easy for the elderly to understand, and the seat can be rotated reliably. In particular, getting on and off to the floor side at the boarding position can be carried out reliably. The safety at the time can be improved.

  Further, the occurrence of protruding portions can be eliminated from the outside of the seat, there is no danger of clothes being caught when getting on and off, and the design of the seat is improved because extra parts can be reduced.

  Further, by fixing the solenoid to the boss, the solenoid can be disposed in the immediate vicinity of the rotation center axis, and the influence of the deflection due to the offset load on the lock pin can be suppressed to a small value.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in FIG. 6, the chair-type stair lift 1 is provided with guide rails 2 so as to approach the wall surface along the slope of the stairs a, and upper guide rollers 3 that hold the guide rails 2 from above and below, respectively. And the lower drive / guide mechanism 4 is attached to the elevator body 7 so as to travel along the guide rail 2. On the elevator body 7, a chair 5 having a backrest, a seat portion, and a footrest is provided. It has a structure. In the chair 5, the backrest and the seat portion are the seat 6.

  The guide rail 2 is arranged by being fixed to the upper part of the staircase a so as to have a predetermined height with a bracket. The guide rail 2 has a circular cross section with the bottom surface opened by an opening, and a chain in the longitudinal direction thereof. It is fixed along.

  As is well known, the elevator body 7 is provided with an upper guide roller 3 for holding the guide rail 2 from above and below and a lower drive / guide mechanism 4 on the surface of the box-type case facing the guide rail 2. The drive / guide mechanism 4 includes a lower guide roller and a sprocket that is driven by an internal electric motor (not shown) in the elevator body 7, and the sprocket meshes with an internal chain from the opening of the guide rail 2, so that the chair type The stair lift 1 moves up and down.

  As shown in FIGS. 1 to 5, a rotation center shaft 12 is erected on a horizontal top plate 11 provided on the upper surface of the elevator body 7, and a bracket 13 is fixed to the back of the backrest of the seat 6. The bottom horizontal plate 14 is provided with a through-hole of the rotation center shaft 12, and a cylindrical boss 15 that is externally fitted to the rotation center shaft 12 is fixed to the through-hole portion on the upper surface of the bottom horizontal plate 14. The boss 15 receives the load of the sheet 6 and supports the sheet 6 so as to be rotatable about the rotation center shaft 12.

  A solenoid 17 is fixed to the outer surface of the boss 15 via a mounting plate 16 with the plunger 18 facing downward, and a lock pin 19 is connected to the lower end of the plunger 18. A holder 20 provided on the plate 14 is held so as to be movable up and down.

  A mounting hole for a holder 20 that holds the lock pin 19 is provided in the bottom horizontal plate 14 of the bracket 13, and the lowered lock pin 19 engages with the top plate 11 of the elevator body 7 described above, whereby the seat An engaging portion 21 that locks the rotation of 6 is provided.

  The engaging portion 21 is formed by a circular hole into which the lower end of the lock pin 19 is fitted, and the seat 6 is locked to the elevator body 7 by fitting the lock pin into the circular hole by lowering due to its own weight. In order to release the lock, the push button switch provided on the armrest 6 a of the seat 6 is pressed to energize the solenoid 17, and the solenoid 17 lifts the plunger 18 and the lock pin 19 to lock from the engagement portion 21. The pin 19 is extracted.

  As shown in FIG. 5D, the position where the engaging portion 21 is provided is arranged such that the lock pin 19 is engaged when the orientation of the seat 6 is in the up / down posture position and when it is in the getting on / off posture position. The seat 6 can be locked so as not to rotate in the up-and-down posture and the riding-on posture.

  When the seat 6 is rotated in the unlocked state, the energization of the solenoid 17 causes the lock pin 19 to descend by its own weight, and its lower end rubs on the top plate 11 around the rotation center shaft 12. As shown in FIG. 5B, a rolling element 22 is provided at the lower end of the lock pin 19 so that the upper surface of the top plate 11 can be smoothly rotated. It has become.

  In addition, a switch 23 for electrically detecting the lock pin 19 that engages with the engaging portion 21 is disposed at a position directly below the engaging portion 21 on the lower surface of the top plate 11.

  The seat rotation mechanism of the present invention has the above-described configuration, and the chair type stair lift 1 is attached to the guide rail 2 by the upper guide roller 3 and the lower drive / guide mechanism 4. Is a push button switch for ascending or descending provided on an armrest 6a while a disabled person or an elderly person sits on a seat 6 provided on the elevator body 7 while stopping at a stop position of the elevator body 7 set on the guide rail 2 When the motor is turned on, the sprocket meshing with the chain is rotated by the activation of the electric motor, and the chair type stair lift 1 is driven along the guide rail 2 by the guide roller 3 and the lower drive / guide mechanism 4 to guide the guide rail 2. When the chair type stair lift 1 is stopped at the stop position of the lift main body 7 set to “1”, it is possible to move upstairs or downstairs while sitting.

  When the chair-type stair lift 1 is moved up and down, the lock pin 19 engages with the engaging portion 21 corresponding to the position of the seat 6 in the up-and-down posture, and the seat 6 moves up and down in a state of being locked sideways.

  When the chair type stair lift 1 is stopped at the upper or lower stop position, when the push button switch provided on the armrest 6a of the seat 6 is pressed, the solenoid 17 is energized, the lock pin 19 is pulled up, and the engaging portion 21 is engaged. Therefore, the seat 6 is rotated by a predetermined angle toward the floor.

  When the lock pin 19 is pulled up to release the lock, the switch 23 is turned off and the energization to the solenoid 17 is interrupted. Therefore, as shown by the arrow in FIG. 1, the seat 6 is manually rotated to the position of getting on and off. The lock pin 19 lowered by its own weight by the rotation of 6 rotates on the top plate 11 about the rotation center shaft 12, and when the seat 6 rotates to the state of getting on and off, the lock pin 19 corresponds to the state of getting on and off. The seat 6 falls into the engagement portion 21 provided at the position where the seat 6 is placed, and the seat 6 is locked on and off, so that the seat 6 can be safely boarded and exited from the floor side.

  When sitting on the seat 6 in the getting-on / off position, the push button switch is pressed to energize the solenoid 17, the lock pin 19 is pulled up to release the lock, the seat 6 is rotated to the up / down position, and the lock pin 19 is engaged with the engaging portion 21 corresponding to the position of the seat 6 in the raising / lowering posture, and the raising / lowering is started in a state where the seat 6 is locked in the lateral direction.

The perspective view which shows the seat rotation state of a chair type stair lift (A) is the perspective view which shows the back side of the sheet | seat of the chair type stair lift using the seat rotation mechanism of this invention, (b) is the perspective view which expanded the principal part. (A) is a rear view of the seat of the chair type stair lift using the seat rotation mechanism of the present invention, and (b) is a bottom view showing the relationship between the top plate and the seat. Enlarged rear view of a seat of a chair type stair lift using the seat rotation mechanism of the present invention (A) is a plan view showing the seat rotation mechanism of the present invention, (b) is a longitudinal sectional view of the solenoid part, (c) is a side view, and (d) is a plan view of the top plate. Explanatory drawing seen from the front showing the overall structure of the chair type stair lift

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chair type stairlift 2 Guide rail 3 Guide roller 4 Drive / guide mechanism 5 Chair 6 Seat 7 Elevator body 11 Top plate 12 Rotation center shaft 13 Bracket 14 Bottom horizontal plate 15 Boss 16 Mounting plate 17 Solenoid 18 Plunger 19 Lock pin 20 Holder 21 Engagement part 22 Roller 23 Switch

Claims (3)

  It is a chair type stair lift that is attached to a guide rail installed along a staircase or an inclined road so that the elevator main body travels along the guide rail, and a seat is provided on the upper portion of the elevator main body. The sheet is attached to a rotation center shaft erected on the upper surface by a boss provided on the back side of the sheet so that the sheet can be rotated about the rotation center axis. A locking pin is provided, and an engaging portion is provided on the top plate of the elevator body to fix the rotation of the seat by engaging the locking pin, and the orientation of the seat is set to the lifting posture position. A seat rotation mechanism for a chair type stair lift that is arranged so that a lock pin is engaged at a certain time and when in a boarding position.   The seat rotating mechanism of the chair type stair lift according to claim 1, wherein the solenoid is operated so as to disengage the lock pin from the engaging portion by operation of a push button provided on the seat.   The seat of the chair type stairlift according to claim 1 or 2, wherein a switch for electrically detecting a lock pin that engages with the engaging portion is disposed below an engaging portion provided on the top plate of the elevator body. Rotating mechanism.

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