JP4220868B2 - Auxiliary handrail for steps - Google Patents

Description

  The present invention relates to an auxiliary handrail that is applied to stepped portions such as a rising wall of a front door, a bathroom, and a veranda.

  With respect to the present invention, an auxiliary handrail composed of a bracket that is fixed to a rising collar and a handrail body that is supported upright by the bracket is known (see Patent Document 1). In this case, the lower end of the pillar of the handrail body is fitted inside the bracket cylinder, and the pillar is fixed by a butterfly bolt screwed into the cylinder. By loosening the butterfly bolt, the vertical position of the handrail main body can be changed, and the handrail main body can be rotated and displaced around the cylinder. The handrail body can be removed from the bracket when the furniture is brought in.

  In this type of auxiliary handrail, it is well known that the height adjusting pedestal is formed of a tube material of a nested structure with different diameters, and the small diameter tube material is fixed at an arbitrary vertical position with a bolt screwed into the large diameter tube material. Yes (see Patent Document 2).

Japanese Utility Model Publication No. 3-68241 (5th page, FIG. 2) Japanese Patent Laid-Open No. 10-18925 (paragraph number 0005, FIG. 3)

  In the auxiliary handrail of Patent Document 1, a through hole that is engaged and fixed by a butterfly bolt is formed on the lower side of the support rail portion of the handrail body. A plurality of through holes are formed at predetermined intervals in the axial direction and in the circumferential direction, and the tip of the screw shaft of the butterfly bolt engages with the through hole, so that the handrail main body cannot be moved up and down, and It can be fixed so that it cannot rotate. Therefore, when adjusting the vertical position and the circumferential position, the through hole formation interval must be the minimum unit of adjustment amount, and the difference in the user's physique and the height of the riser Detailed position adjustment cannot be performed according to Since the whole handrail body is supported in a cantilevered manner by the bracket, it is inevitable that a large tilting moment acts on the connecting part between the support column and the bracket. There is a problem in safety in that the bolt that is fixed to the heel is loosened and the handrail body is likely to wobble.

  In this respect, the auxiliary handrail of Patent Document 2 is able to disperse and support the external force acting on the auxiliary handrail because the main leg of the handrail body is raised and fixed to the heel and the height adjusting pedestal is grounded to the floor of the entrance. A large tilting moment can be prevented from concentrating locally. There is also an advantage that the height of the pedestal can be adjusted to an arbitrary height. However, the height adjustment pedestal can only adjust that the height from the entrance floor surface to the top surface of the fence varies depending on the building. The height of the handrail depends on the physique of the user. You can't optimize it. This is because the main leg of the handrail body is lifted and fixed directly to the heel via the bracket, and the height of the handrail body side is constant.

  The conventional auxiliary handrail has a limitation in use in that the installation location is limited. For example, a clog box or a storage shelf is often installed at the entrance, but in order to avoid getting in the way when putting in and out footwear, the auxiliary handrail should be installed in the vicinity of this type of storage. There must be. In some cases, it is necessary to change the installation position of the storage body to secure a space for installing the auxiliary handrail. Incidentally, the auxiliary handrail of Patent Document 1 can rotate and displace the handrail body around the cylindrical body by loosening the butterfly bolt, so that it is not impossible to displace the handrail body to a position where it does not get in the way as needed. . However, this auxiliary handrail only allows the handrail body to rotate and rotate around the cylinder in order to adjust the handrail body to a posture suitable for use, and the handrail body is displaced to an unobstructed posture. It takes too much time to operate and return to the use posture again.

  The purpose of the present invention is not only to change and adjust the height of the handrail main body and the posture around the vertical axis according to the difference in the user's physique and the height of the rising collar, but also to ensure the user. An object of the present invention is to provide an auxiliary handrail for a level difference that can be supported and is excellent in safety. The purpose of the present invention is to allow the handrail body to be displaced between a use posture and a non-use posture with a minimum of effort, and when carrying in furniture, the handrail body can be removed from the bracket, and therefore, a shoebox, etc. It is an object of the present invention to provide an easy-to-use auxiliary handrail that can be installed without problems even on the front surface of the storage body.

  The auxiliary handrail of the present invention includes a bracket 1 attached to a stepped portion of a building, and a handrail main body 2 supported upright by the bracket 1. The handrail body 2 is supported by a first pedestal 3 supported by the bracket 1, a second pedestal 4 that contacts the lower floor of the stepped portion, and both first and second pedestal columns 3 and 4. Handrail bars 5 and 6 are provided. The second pedestal 4 includes a fixed leg 10 connected to the handrail bars 5 and 6, an adjustment leg 11 attached to the fixed leg 10 so that the vertical position can be adjusted, and the adjustment leg 11 not movable at an arbitrary adjustment position. A locking device 12 for fixing is included. The bracket 1 includes a base 20 that is fastened and fixed to a step portion, and a clamp mechanism 21 that guides and supports the first leg 3 so that the vertical position can be changed, and that fixes the first leg 3 at an arbitrary vertical position. It is out. That is, the height of the handrail main body 2 can be finely adjusted by adjusting the height of the first leg pillar 3 and the second leg pillar 4 supporting the handrail main body 2 (claim 1).

  The clamp mechanism 21 includes a clamp body 25 that holds and holds the peripheral surface of the first pedestal 3, and an operation mechanism that switches the clamp body 25 between a locked posture and an unlocked posture. Accordingly, the operation mechanism is switched to enable the handrail body 2 to be rotationally displaced about the first pedestal column 3 in a state in which the clamp body 25 is switched to the unlocked posture (claim 2). .

  The clamp mechanism 21 includes a clamp body 25 that holds and holds the peripheral surface of the first pedestal 3, and an operation mechanism that switches the clamp body 25 between a locked posture and an unlocked posture. The operation mechanism rotates the switching lever 33, the movable cam 34 that rotates together with the switching lever 33, the fixed cam 35 provided on the clamp body 25 side corresponding to the movable cam 34, the switching lever 33, and the movable cam 34. It includes a lever shaft 36 that is pivotally supported. Thus, the clamp body 25 can be switched between the locked posture and the unlocked posture by the contact and separation of the movable cam 34 and the fixed cam 35 accompanying the rotation operation of the switching lever 33 (Claim 3).

  The second pedestal 4 includes a fixed leg 10 formed of a tube material and an adjustment leg 11 that is nested with respect to the fixed leg 10 and can be adjusted in the vertical position. The locking device 12 includes a holding ring 48 having a C-shaped cross section that holds the peripheral surface of the adjustment leg 11 and a screw 49 that tightens the holding ring 48 (Claim 4).

  A stopper 8 that is received and supported by the bracket 1 and restricts the downward movement of the handrail body 2 is provided below the first pedestal 3 (Claim 5).

  In the present invention, the first pedestal 3 supported by the bracket 1, the second pedestal 4 in contact with the lower floor surface of the stepped portion, and the handrails supported by the first and second pedestal columns 3 and 4. The handrail main body 2 is composed of bars 5 and 6 and the like, and the first leg 3 is guided and supported by the clamp mechanism 21 so that the vertical position can be changed, so that the first leg 3 can be fixed at an arbitrary vertical position. Further, the second pedestal 4 is composed of a fixed leg 10 and an adjustment leg 11 having a nested structure, and the adjustment leg 11 can be fixed to be immovable at an arbitrary adjustment position by a lock tool 12. Thus, according to the auxiliary handrail which made it possible to adjust each height of the 1st pedestal pillar 3 and the 2nd pedestal pillar 4, the height of the handrail main body 2 can be adjusted, for example according to the difference in the height of a rising collar. Of course, the height of the handrail body 2 can be finely changed and adjusted according to the difference in the physique of the user, and the usability of the auxiliary handrail can be improved. Since the handrail main body 2 is supported by the first and second leg pillars 3 and 4, the external force acting on the handrail main body 2 is distributed and supported by the both leg pillars 3 and 4 so that the user can be firmly supported and safe. An auxiliary handrail for a step having excellent properties can be obtained (claim 1).

  The clamp main body 25 that fixes the first pedestal 3 and the operation mechanism that switches the clamp main body 25 between the locked posture and the unlocked posture constitute the clamp mechanism 21, and the clamp main body 25 is switched to the unlocked posture. According to the auxiliary handrail that allows the handrail body 2 to be rotationally displaced about the first pedestal 3, the handrail body 2 can be displaced from the use posture to the non-use posture only by switching the operation mechanism. So, for example, even if an auxiliary handrail is installed on the front of a storage box such as a shoebox, footwear can be taken in and out without any problem, and the surrounding space is effective according to the situation of the location of the auxiliary handrail. Available. When the furniture is carried in / out, the handrail body 2 is removed from the bracket, so that the carrying-in work or the carrying-out work can be performed without any problem (claim 2).

  The switching lever 33, the movable cam 34, the fixed cam 35, and the like constitute an operation mechanism, and when the switching lever 33 is switched, the movable body 34 and the fixed cam 35 are moved toward and away from each other so that the clamp body 25 is brought into the locked posture. According to the operation mechanism that can be switched to the unlocked position, the clamp body 25 can be switched to the locked position and the unlocked position with a single touch with the minimum effort of rotating the switching lever 33 by a predetermined angle. Therefore, the posture change of the handrail main body 2 can be performed quickly and easily, and the labor required for the posture change can be remarkably reduced (claim 3).

  The second leg 4 can be adjusted up and down by the fixing leg 10 and the adjusting leg 11 assembled in a nested manner, and the locking device 12 that locks and fixes the adjusting leg 11 at an arbitrary adjustment position is provided with a holding ring 48 and a screw 49. Since the adjustment leg 11 can be locked and fixed at an arbitrary vertical position, the height of the handrail main body 2 can be precisely adjusted according to the difference in the physique of the user, the difference in the height of the raised ridge, and the like. Since the adjustment leg 11 is held and fixed by the holding ring 48 in the locked state, it is possible to reliably prevent the adjustment leg 11 from rattling after the adjustment, and the weight of the user is stabilized compared to the conventional auxiliary handrail. There is also an advantage that it can be supported in a state (claim 4).

  When the stopper 8 for restricting the downward movement of the handrail main body 2 is provided at the lower part of the first leg pillar 3, the first leg pillar 3 is guided by the weight of the handrail main body 2 in the state where the clamp body 25 is switched to the unlocked position. Since it is possible to prevent the handrail main body 2 from tilting with the stopper 8, it is possible to smoothly perform the posture changing operation of the auxiliary handrail. When the handrail main body 2 is removed from the bracket 1 to carry in and out the furniture and reassembled to the bracket 1, it is not necessary to adjust the height of the handrail main body 2 again, and the auxiliary handrail 2 quickly returns to the use posture. There is also an advantage that can be achieved.

  1 to 10 show an embodiment of the auxiliary railing for steps according to the present invention. In FIG. 1 and FIG. 2, the auxiliary handrail includes, for example, a bracket 1 attached to a vertical wall of a rising wall (stepped portion) of the entrance and a handrail body 2 that is supported upright by the bracket 1.

  The handrail body 2 is supported by a vertical first pedestal 3 supported by the bracket 1, a vertical second pedestal 4 in contact with the entrance floor, and first and second pedestal columns 3 and 4. It consists of upper and lower handrail bars 5 and 6 etc. The first leg column 3, the second leg column 4, and the handrail rods 5 and 6 are each made of an aluminum tube having a circular cross section, and are joined together by welding or an elbow-shaped joint 7. A stopper 8 that restricts the downward movement of the handrail main body 2 is provided on the lower outer surface of the first pedestal 3. The stopper 8 is made of a metal ring that can slide up and down along the first leg 3, and can be fixed to the first leg 3 at an arbitrary vertical position by screwing screws 9 provided at a plurality of locations in the circumferential direction.

  Whereas the first leg column 3 is formed of a single pipe, the second leg column 4 has a large-diameter fixed leg 10 connected to the handrail bars 5 and 6 and a small diameter that can be taken in and out of the fixed leg 10. The adjustment legs 11 are nested. A locking device 12 is fixed to the lower end of the fixed leg 10 so that the adjusting leg 11 is immovably fixed at an arbitrary vertical adjustment position. The lower end of the adjusting leg 11 is an anti-slip material formed of rubber or plastic. A leg seat 13 is fixed.

  One end of a horizontal handrail bar 6 is welded to the middle part of the fixed leg 10 of the second leg column 4, the upper end of the first leg column 3 is welded to the other end of the handrail bar 6, and the fixed leg 10 and the second By welding the reinforcing bar 14 near the lower end of the single leg 3, both leg pillars 3 and 4 and the handrail bar 6 are assembled in an h shape. An upper handrail bar 5 is connected and fixed to the h-shaped base frame via a joint 7. Specifically, the joint 7 is fixed to each of the protruding end of the handrail bar 6 and the upper end of the fixed leg 10 with screws, and the upper handrail bar 5 is connected to both joints 7 and fixed with screws.

  As shown in FIG. 2, the upper handrail bar 5 includes a vertical vertical frame 5a, a horizontal horizontal frame 5b continuous with the vertical frame 5a, an oblique frame 5c inclined downward and continuously with the horizontal frame 5b, and an oblique frame. 5c is provided with an end frame 5d that is curved in a semicircular shape, and the lower end of the vertical frame 5a and the curved end portion of the end frame 5d are fitted and connected to the previous joint 7, respectively. In this way, when both the pillars 3 and 4 and the upper and lower handrail bars 5 and 6 are assembled in an endless frame shape, it is possible to reliably prevent the hem and sleeve of the clothes from being caught by the handrail bars 5 and 6.

  As shown in FIG. 1, in a state where the handrail body 2 is supported upright by the bracket 1, the horizontal frame 5 b protrudes above the floor surface of the eaves, and the oblique frame 5 c and the end frame 5 d are in contact with the floor of the second pedestal 4. It overhangs from the position. This is so that the user can be supported in a stable state until the climbing of the climbing ridge is completely finished.

  In FIG. 3, the bracket 1 includes a base 20 that is fastened and fixed to a rising collar, a clamp mechanism 21 that is fixed to the base 20, and a cover 22 that covers the outer surfaces of both. The base 20 is formed of a steel plate in a horizontally long rectangular shape, and its four corners are raised with screws 23 and fastened and fixed to the vertical wall of the ridge. The clamp mechanism 21 includes a clamp body 25 that holds and holds the peripheral surface of the first pedestal 3, and an operation mechanism that switches the clamp body 25 between a locked posture and an unlocked posture.

  In the clamp body 25 made of an injection molded plastic block, a guide hole 26 for supporting the first pedestal 3 is formed in a vertically penetrating shape, and a slit 27 is continuously formed on one side of the guide hole 26, A pair of fastening seats 28 and 29 are provided before and after the slit 27. The front and rear tightening seats 28 and 29 can be brought into contact with and separated from each other by an operation mechanism, which will be described later, so that the peripheral wall of the guide hole 26 can be expanded and contracted, and the first leg 3 can be clamped or released. The clamp body 25 is bonded and fixed to the outer surface of the base 20 with four screws 30. The front and rear tightening seats 28 and 29 are respectively formed with insertion holes 31 for a lever shaft 36 described later (see FIG. 4).

  The operating mechanism includes a switching lever 33, a movable cam 34 that rotates along with the switching lever 33, a fixed cam 35 that is recessed in the front fastening seat 28 of the clamp body 25 corresponding to the movable cam 34, and a switching lever. 33 and the movable cam 34 are constituted by a lever shaft 36 that rotatably supports the shaft. Fan-shaped cam projections 34a and 35a and concave portions are alternately formed in the circumferential direction on the joint surface of the movable cam 34 and the fixed cam 35, respectively. As shown in FIG. 4, the cams 34a and 35a are close to each other when the cam projections 34a and 35a face each other, and the cams 34a and 35a face each other as shown in FIGS. Since the 34 and 35 are separated from each other, the clamp body 25 can be switched between a locked posture and an unlocked posture by moving the cams 34 and 35 apart.

  As shown in FIG. 4, with the movable cam 34 joined to the fixed cam 35, the movable cam 34 and the front and rear fastening seats 28 and 29 are connected by a lever shaft 36, whereby the movable cam 34 is connected to the clamp body 25. And integrated. In this embodiment, a commercially available bolt is used as the lever shaft 36, and two nuts 37 are screwed into the screw shaft from the rear fastening seat 29 side to fix the lever shaft 36. By adjusting the amount of tightening to the nut 37, the tightening force of the clamp body 25 can be adjusted.

  In order to regulate the rotatable angle of the movable cam 34 to 90 degrees, as shown in FIG. 5, a restricting claw 38 is provided on the peripheral surface of the cam projection 34a, and the peripheral surface of the recess in which the fixed cam 35 is formed. A stepped portion 39 that contacts the restricting claw 38 is provided at the facing position. As described above, if the operation region of the movable cam 34 is restricted, it is possible to prevent the switching lever 33 from being rotated more than necessary, so that it is possible to further reduce the effort of switching the posture of the clamp body 25.

  As shown in FIG. 9, the switching lever 33 and the movable cam 34 are connected so as not to be rotatable relative to each other via a square shaft 40 provided on the movable cam 34, and are integrally separated by a screw 41 screwed from the outer surface of the lever boss. It has become. As shown in FIG. 4, when the switching lever 33 is set to the vertical posture, the clamp main body 25 is switched to the unlocked posture, so that the first pedestal 3 can freely slide up and down with respect to the clamp main body 25, and the handrail main body 2 further. Can be rotationally displaced about the first leg 3 as a center. When the switching lever 33 is rotated counterclockwise from this state to the horizontal posture as shown in FIG. 8, the clamp body 25 is switched to the locked posture and the first leg 3 is fixed. The column 3 can be fixedly held so as to be non-rotatable and non-rotatable.

  The cover 22 is made of a plastic molded product, and a through hole 43 for the first pedestal 3 and a through hole 44 for the switching lever 33 are opened on the upper and lower walls and the front wall, respectively. The cover 22 is fixed to the upper and lower surfaces of the clamp body 25 with four screws 45.

  5 and 6 show a lock 12 for fixing the adjustment leg 11. The locking device 12 operates to tighten the holding ring 48, a boss 47 fitted and fixed to the lower end of the fixed leg 10, a holding ring 48 having a C-shaped cross section that holds and holds the peripheral surface of the adjusting leg 11, and the holding ring 48. It comprises bolts (screws) 49. The boss 47 and the holding ring 48 are integrally formed, and the adjustment leg 11 cannot be moved up and down by the holding ring 48 by tightening a pair of fastening seats 50 provided on the holding ring 48 with bolts 49. Can be fixed.

  Next, the assembly procedure of the auxiliary handrail will be described. The clamp mechanism 21 from which the switching lever 33 is separated is raised and applied to the heel, the base 20 is fixed with screws 23, and the cover 22 and the switching lever 33 are assembled to the clamp body 25. The switching lever 33 is switched to the unlock position, and the first pedestal 3 is inserted into the guide hole 26 and temporarily assembled. The bolt 49 of the lock 12 is loosened so that the adjustment leg 11 can be slid up and down with respect to the fixed leg 10, and in this state, the vertical position of the handrail body 2 is adjusted to determine a height suitable for the user.

  When the vertical height of the handrail main body 2 is determined, the switching lever 33 is switched to the lock position to fix the first leg 3. The stopper 8 is slid downward along the first leg pillar 3, and the screw 9 is tightened in a state where the lower surface thereof is in contact with the cover 22, and the stopper 8 is fixed. Finally, in a state where the leg seat 13 of the adjusting leg 11 is pressed against the floor of the entrance, the adjusting leg 11 is fixed so as not to move by tightening the bolt 49 of the lock 12.

  As shown in FIG. 10, the auxiliary handrail configured as described above can be used in a state where the handrail body 2 is adjacent to the entrance clog box. When putting the footwear in and out of the shoebox, the switching lever 33 is switched to the unlock position, and the restraint of the first pedestal 3 by the clamp body 25 is released. Next, while slightly lifting the handrail main body 2, it is rotated in a direction away from the clog box, and as shown by a solid line in FIG. In this state, the front space of the clog box is opened, so that the clog box door can be opened and closed and footwear can be taken in and out without any trouble. In order to return the auxiliary handrail to the use posture, the auxiliary handrail 2 may be rotated from the retracted position to the use position indicated by the imaginary line, and then the switching lever 33 may be switched to the lock position.

  When the clamp mechanism 21 is unlocked, the weight of the handrail body 2 causes the first leg 3 to descend along the guide hole 26, but the stopper fixed to the first leg 3 as shown in FIG. Since 8 receives the weight of the handrail body 2, the auxiliary handrail does not tilt even if the clamp mechanism 21 is unlocked. When carrying in or taking out furniture, the switching lever 33 is switched to the unlock position, and the handrail body 2 is removed from the bracket 1.

  In addition to the above embodiment, the base 20 and the clamp body 25 can be formed integrally. The fixed leg 10 and the adjusting leg 11 can be formed of a tube material having a non-circular cross section. If necessary, the adjusting leg 11 can be formed of a large diameter tube material, and the fixed leg 10 can be formed of a small diameter tube material. . Only one of the legs 10 and 11 may be formed of a pipe material. In short, a nested structure is sufficient. The clamp mechanism 21 does not need to be configured with the pair of cams 34 and 35 as a tightening element, and can be configured with, for example, a lever link mechanism. The peripheral surface of the first pedestal 3 can be formed in a serrated shaft shape.

It is a perspective view of the auxiliary handrail for steps. It is a disassembled perspective view of the auxiliary railing for level | step differences. It is a disassembled perspective view of a clamp mechanism. It is a vertical side view of a clamp mechanism. It is sectional drawing which shows the structure of a movable cam and a fixed cam. It is a vertical side view of a locking tool. It is the sectional view on the AA line in FIG. It is a cross-sectional top view which shows the clamp main body of a locked state. It is a cross-sectional top view which shows the clamp main body of an unlocked state. It is a top view of the state which evacuated the handrail main body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bracket 2 Handrail main body 3 1st leg pillar 4 2nd leg pillar 5 * 6 Handrail stick 8 Stopper 10 Fixed leg 11 Adjustment leg 12 Locking tool 20 Base 21 Clamp mechanism 25 Clamp body 33 Switching lever 34 Movable cam 35 Fixed cam 36 Lever Shaft 48 Holding ring 49 Screw

Claims (5)

A bracket 1 attached to a stepped portion of the building, and a handrail body 2 supported upright by the bracket 1,
The handrail body 2 is supported by a first pedestal 3 supported by the bracket 1, a second pedestal 4 that contacts the lower floor of the stepped portion, and both first and second pedestal columns 3 and 4. With handrail bars 5 and 6,
The second pedestal 4 includes a fixed leg 10 connected to the handrail bars 5 and 6, an adjustment leg 11 attached to the fixed leg 10 so that the vertical position can be adjusted, and the adjustment leg 11 not movable at an arbitrary adjustment position. Including a locking device 12 for fixing,
The bracket 1 includes a base 20 that is fastened and fixed to a step portion, and a clamp mechanism 21 that guides and supports the first leg 3 so that the vertical position can be changed, and that fixes the first leg 3 at an arbitrary vertical position. An auxiliary handrail for steps, which is characterized by The clamp mechanism 21 includes a clamp body 25 that holds and holds the peripheral surface of the first pedestal 3, and an operation mechanism that switches the clamp body 25 between a locked posture and an unlocked posture,
The auxiliary handrail for steps according to claim 1, wherein the handrail body (2) can be rotationally displaced about the first pedestal (3) in a state where the operation mechanism is switched and the clamp body (25) is switched to the unlocked posture. The clamp mechanism 21 includes a clamp body 25 that sandwiches and holds the circumferential surface of the first pedestal 3, and an operation mechanism that switches the clamp body 25 between a locked posture and an unlocked posture,
The operating mechanism rotates the switching lever 33, the movable cam 34 that rotates together with the switching lever 33, the fixed cam 35 provided on the clamp body 25 side corresponding to the movable cam 34, and the switching lever 33 and the movable cam 34. A lever shaft 36 that pivotally supports it,
The step assisting handrail according to claim 1 or 2, wherein the clamp body 25 can be switched between a locked posture and an unlocked posture by moving the movable cam 34 and the fixed cam 35 in contact with and separated from each other by the rotation of the switching lever 33. The second pedestal 4 includes a fixed leg 10 formed of a pipe material, and an adjustment leg 11 that is nested with respect to the fixed leg 10 and can be adjusted vertically.
The locking device (12) comprises a holding ring (48) having a C-shaped cross section for holding the peripheral surface of the adjusting leg (11) and a screw (49) for tightening the holding ring (48). Auxiliary handrail for steps as described.   The auxiliary railing for steps according to claim 2, 3, or 4, wherein a stopper 8 that is received and supported by the bracket 1 and restricts the downward movement of the handrail main body 2 is provided below the first pedestal 3.

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