JP2012096898A - Lift drive unit for chair type stair lift - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lift drive unit for a stair lift capable of making the chair type stair lift cope with stairs of different conditions in respective dwelling houses, and, in particular, usable in a vertical guide rail fabricated from a steel flat plate material including a three-dimensionally shaped spiral section such as a landing of a narrow stair according to a dwelling house situation in Japan.SOLUTION: Guide roller units 4 are arranged in a driving part 1 and a driven part 2 along a vertical direction of the driving part, in a structure where the driving part 1 built in with a motor 7 and a pinion gear 6 and the driven part 2 equipped with no driving component are connected by a movable connecting part 3 making them movable each other, each guide roller unit 4 is rotatable horizontally to be driven along the vertical guide rail 10, a vertical damper unit 9 and horizontal damper unit 8 using a coil spring or an air spring are equipped in the driving part 1 and the driven part 2, and the vertical guide rail 10 used therein comprises a linear inclined part, a horizontal curved part, a curved inclined part of three-dimensional shape and the like.

Description

  The present invention relates to a driving method for a stair lift used in a chair-type stair lift, which is used for a guide rail in which a short hole having a rack hole formed in a substantially central portion of a horizontally long steel flat plate is vertically set.

  A chair-type stair lift, for example, when an elderly person or sick person with weak legs is unable to ascend and descend the stair by his own power, sits on a chair of a stair lift that goes up and down along the guide rail installed on the staircase, and goes up and down It is possible to do.

Japanese Patent Laid-Open No. 9-212290 As an example of what is relatively close to the present invention, a guide rail provided with a rack is sandwiched between guide rollers and driven by a pinion gear.

  The conventional stair lift has the following problems. The stair lift using the guide rail made of a round pipe in Patent Documents 1 and 2 has an advantage that it is easy to keep the strength surface and the chair of the lift body horizontal and stable. In Patent Document 1, a drive unit is arranged at the center of the elevator in the structure, and a guide roller that can rotate in the horizontal direction is provided on both sides, and the angle of the guide roller changes from the axis to the outward opening. Although it is structured to follow the guide rail, moving the guide roller so that it spreads in the horizontal direction not only becomes unstable to maintain a stable posture of the elevator, but this Stress is applied to the guide roller, and in the worst case, the mechanism that adheres to the guide rail may be damaged due to fatigue or the like, and the attitude control of the elevator may become unstable. Further, in Patent Document 1, a flat guide is welded to a round pipe vertically, a horizontal guide plate is attached to the round pipe that is driven by attaching a rack or a chain to the vertical surface and has a horizontal rack hole. The vertical stair lifting device uses a vertical guide rail, but the structure of the device itself is complicated and has many parts. The concave guide roller sandwiches the guide pipe from both sides, and the guide roller moves against the curve. Although it is possible to rotate in the horizontal direction, if it has a spiral curve such as in the vicinity of steep landings of staircases that are common in Japanese houses, it is actually impossible to rotate with this method. For example, a small radius such as R150 is required. If required, it should have been sandwiched between the rollers on both sides, but the rollers may loosen and the rollers may come off. Arbitrariness.

  Further, Patent Document 2 also has a drive unit arranged at the center of the elevator and is provided with guide wheels on both sides thereof to function three-dimensionally in the curved portion of the guide rail. However, the guide rail uses a pipe type, In the pipe method, it is difficult to process a complete three-dimensional shape, and both the guide rail and the stair lift are expensive and troublesome in terms of production and assembly costs. Furthermore, when the round pipe is formed in a three-dimensional inclined curved shape (spiral shape) corresponding to the shape of the landing stage in the middle of the stairs, the guide roller itself can be moved by sandwiching the guide rail from both sides with a concave guide roller. However, the spiral staircase with a steep slope that has a steep slope in many Japanese houses requires a small radius of 150-200R. In addition, it is difficult to perform spiral bending with a three-dimensional shape, and the stair lift is poor in turning ability to smoothly move up and down in a narrow staircase with respect to this guide rail. There is a risk of doing.

  An object of the present invention is to eliminate the problems of the conventional chair type stair lift. That is, the main object of the present invention is to have a straight inclined portion, an inclined curved portion, etc. of the upper and lower steps corresponding to the shape of different stairs in each door, and more compact and easy to install on a narrower stairs than conventional guide rails. Provides a chair-type stair lift that can move smoothly and comfortably with respect to the vertical guide rail, and is very compact and does not become an obstacle to the staircase. There is to do.

  The chair-type stair lift according to the present invention uses a guide rail that is processed in a long horizontal iron flat plate and has a short lateral direction, and the lift main body is connected to the drive unit 1 and the driven unit 2 to each other. The drive unit 1 includes a pinion gear 6 and a motor 7, and the drive unit 1 and the driven unit 2 are driven by a vertical guide rail 10. The unit 4 is provided so as to be sandwiched from the vertical direction of the rail, and the guide roller unit 4 is rotatable in the horizontal direction with respect to the vertical guide rail 10 and can be driven on the vertical guide rail. Is equipped with a horizontal damper unit 8 and a vertical damper unit 9, and the horizontal damper unit 8 and the vertical damper unit 9 are independently movable. Kill.

  In the above stair lift configuration, even if the horizontal damper unit 8 and the vertical damper unit 9 are attached to the driven portion 2, the curved portion having a three-dimensional shape as seen in the horizontal bending portion of the vertical guide rail 10 and particularly in the spiral staircase. A smooth lifting operation can be provided in the inclined portion.

  The curved inclined portion means a portion that is curved while being inclined, that is, a portion that is three-dimensionally curved while being inclined in a spiral manner.

  According to the stair lift according to the present invention, it is also adapted to a narrow staircase according to the Japanese housing situation, and from a steel plate, at least a straight slope for a lower stage, a curved slope, a linear slope for an upper stage In order to achieve a smooth ascending / descending operation using a guide rail that has a short vertical section with a basic portion of the shape portion, and particularly in a linear inclined portion of the guide rail or a curved inclined portion having a three-dimensional curve The driving unit 1 and the driven unit 2 are independent, and the two are connected by the movable connecting unit 3 to eliminate the twist from the curved inclined portion related to the driving unit 1 and the driven unit 2, and the driving unit 1 In order to cope with the change in the rail width of the guide roller unit 4 in the horizontal bending portion and the vertical bending portion of the guide rail, and the operation by the pinion gear 6 biting into the rack 11 of the vertical guide rail 10 To prevent good, equipped with vertical damper unit 9 horizontal damper unit 8, it is reasonably safe and stable lifting operation.

It is an arrangement plan of a drive part, a follower part, and a movable connection part seen from the side of a chair type stair lift according to the present invention. It is a top view of what was shown in FIG. It is the figure seen from the guide rail cross section side of the drive part shown in FIG. It is the figure seen from the guide rail cross section side of the driven part shown in FIG. It is a figure which shows the positional relationship of the pinion gear of the stair lift which concerns on this invention, a guide roller unit, and a guide rail. It is a specific example of the vertical guide rail used with the stair lift based on this invention. 1 is an overall schematic view of a stair lift according to the present invention. It is a figure which shows the operation state in the curved inclination-shaped part of the stair lift based on this invention.

  The stair lift according to the present invention is a guide rail in which a plurality of iron flat plates processed in accordance with the shape, dimensions, inclination angle, etc. of the staircase to be installed are connected in the longitudinal direction so that the short sides are vertical. In order to realize a smooth ascending and descending operation without twisting in each section of the upper part of the linear slope for the lower stage of the guide rail, the upper part of the curved slope with a three-dimensional shape for the landing, and the upper part of the linear slope for the upper stage The drive unit 1, the driven unit 2, and the movable connecting unit 3 can be independently operated. The drive unit 1 is engaged with a rack 11 attached to the vertical guide rail 10 and driven by a motor 7. 6, the drive unit 1 and the driven unit 2 not equipped with a drive mechanism are connected to each other by a movable connection unit 3 that can rotate in the vertical direction, and further, a drive unit for traveling on the vertical guide rail 10. And the driven part 2 are equipped with a guide roller unit 4 which is attached so as to sandwich the guide rail from the vertical vertical direction and can be rotated in the horizontal direction and driven by the guide rail, and the drive part 1 is linearly inclined in the vertical direction. The vertical damper unit 9 is provided to cope with the change in the rail width in the shape portion, and when the flange of the pinion gear 6 in the vertical bending portion of the rail is driven along the side surface of the guide rail in the horizontal direction, the twist from the flange A chair type stair lift equipped with a horizontal damper unit 8 using a coil spring or an air spring to solve the problem.

  FIG. 7 shows an embodiment in which a stair lift according to the present invention is mounted on a vertical guide rail 10. In FIG. 7, the vertical guide rail 10 used for the stair lift of the present invention is manufactured from iron flat iron, and is connected in the longitudinal direction so that the short side is vertical. It can be designed according to the shape, inclination angle, and dimensions of the staircase to be installed. In particular, it has a feature that a spiral shape having a curved inclined portion so-called three-dimensional curve near the landing area of the staircase can be easily manufactured. Further, a plurality of rack holes 11 are arranged at equal intervals in the central portion of the vertical guide rail 10 so that the drive pinion gear 6 is fitted, and the dimensions of the rack holes are set to fit the pinion gear 6. FIG. 6 shows a state before the vertical guide rail is attached. This vertical guide rail is composed of a straight part and a horizontal bent part that is U-shaped when viewed from above, a vertical inclined part used for the upper and lower parts of the stairs, and a curved inclined part characterized by a three-dimensional shape. So it can be used for various houses and facilities, including small Japanese houses.

  Since the vertical guide rail 10 described above is used, the stair lift according to the present invention has the following structure. FIG. 8 shows an embodiment of the stair lift according to the present invention in a curved inclined portion guide rail having a spiral three-dimensional curve used for a stair landing. In FIG. 8, the structure of the main stair lift is composed of three elements: a drive unit 1 and a driven unit 2, and a movable connection unit 3 connected so that the drive unit 1 and the driven unit 2 can move with each other. Reference numeral 3 denotes a curved inclined portion in which the drive unit 1 and the driven unit 2 are installed at the landing stage of the staircase, ie, the vertical direction of the driven unit 2 generated by the engagement of the pinion gear 6 of the drive unit 1 and the vertical guide rail 10. A horizontal damper unit 8 is attached to the drive unit 1 to eliminate the twisting action in the horizontal direction. In the vertical bent portion in the vicinity of the upper step portion and the lower step portion shown in FIG. 7, a vertical twist is generated between the drive portion 1 and the driven portion 2 in the ascending and descending operations. Therefore, in order to eliminate this twist, the vertical direction A vertical damper unit 9 is additionally provided.

  FIG. 3 shows a state in which the drive unit 1 of the stair lift is mounted on the vertical guide rail 10. The guide roller unit 4 in FIG. 3 is mounted so as to sandwich the vertical guide rail 10 from the vertical up and down direction, and the guide roller unit 4 is rotatable in the horizontal direction because it follows the guide rail. Further, the guide roller unit 4 is not limited to a specific form or structure thereof. For example, a groove is provided with a dimension in which the guide rail fits in a central portion in the vertical direction of the guide roller, and the guide rail is formed from the vertical vertical direction. You may make it pinch | interpose, and you may make it pinch with a guide roller with respect to the vertical up-down direction and the side part of a guide rail so that it may also be a known method.

  FIG. 4 shows a state in which the driven portion 2 of the stair lift is mounted on the vertical guide rail 10. In FIG. 4, the guide roller unit 4 is mounted so as to sandwich the vertical guide rail 10 from the vertical vertical direction in the same manner as the drive unit in FIG. 3, and the guide roller unit 4 rotates in the horizontal direction to follow the guide rail. It is possible.

  FIG. 5 shows a layout of the pinion gear 6, the vertical guide rail 10, and the guide roller unit 4 mounted so as to sandwich the vertical guide rail 10 from the vertical vertical direction in the drive unit 1 of the stair elevator. In FIG. 5, the pinion gear 6 and the pinion gear flange are known, and the shape and material thereof are not limited, and a commercially available pinion gear may be used.

  The present invention is a chair type stair lift, and uses a vertical guide rail composed of a straight inclined portion, a horizontal curved portion, a curved inclined portion having a three-dimensional shape, etc., which is obtained by processing a steel flat plate according to the shape of the staircase. The elevator body is easy, inexpensive and simple in structure, and can be installed easily and inexpensively. It is safe and friendly to users such as the elderly and others. Yes, it can be used for steeply curved sections of R150-200, which is the minimum radius of the guide rail, in the stair lift as it corresponds to the housing situation in Japan, and it can provide a very compact one so as not to be an obstacle for the staircase .

DESCRIPTION OF SYMBOLS 1-Drive part 2-Drive part 3-Moving connection part 4-Guide roller unit 5-Motor 6-Pinion gear 7-Motor 8-Horizontal damper unit 9-Vertical damper unit 10-Vertical guide rail 11-Rack hole

Claims (3)

  A structure in which a driving unit 1 incorporating a motor 7 and a pinion gear 6 and a driven unit 2 not equipped with a driving mechanism are coupled by a movable coupling unit 3 that can be rotated in the vertical direction, and an iron flat plate is shaped like a staircase A stair lift device using a long guide rail in which the short side made up of a straight inclined portion, a horizontal curved portion, a curved inclined portion having a three-dimensional shape, etc., which are processed according to the above, is made vertical.   In the drive unit, a long guide rail in which a short side made up of a straight inclined portion, a horizontal curved portion, a curved inclined portion having a three-dimensional shape, etc., obtained by processing an iron flat plate in accordance with the shape of a staircase is made vertical. The stair lift device according to claim 1, wherein a vertical damper unit 9 and a horizontal damper unit 8 using a coil spring or an air spring are attached. In the driven part, a long guide rail in which a short side composed of a straight inclined part, a horizontal curved part, a curved inclined part having a three-dimensional shape, etc., which are obtained by processing an iron flat plate in accordance with the shape of a staircase, is made vertical. The stair lift device according to claim 1, wherein a vertical damper unit 9 and a horizontal damper unit 8 using a coil spring or an air spring are attached.

Images