JP3703386B2 - Handrail mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a handrail mounting structure on a spiral staircase or a curved staircase.
[0002]
[Prior art]
In general, in a spiral staircase, a tread board that receives a load of a person or the like is attached to a support column that transmits the load to the floor or the ground, either directly or via a bracket, and a stand that supports a handrail at the tip of the tread board. A stick is erected. In addition, in order to keep the treads horizontal and not cause a difference in deflection between the adjacent treads, the vicinity of the lower end of the vertical bar penetrating the two adjacent treads may be fixed to each tread.
[0003]
The spiral staircase and the curved staircase are manufactured based on dimensions such as a floor height measured at each site, and most of them are assembled at the factory using welding.
[0004]
[Problems to be solved by the invention]
A staircase in which a column, a step board, a vertical bar, and a handrail are integrally assembled in a factory has a large size and is heavy, so that a trailer or a crane is required for transportation and installation, resulting in an increase in construction cost. In particular, if the dimensions of the stairs are large, they cannot be carried in from a small entrance, so there is a possibility that they cannot be installed in an existing building like renovation. In this case, it is necessary to disassemble the stairs to be compact and assemble on site.
[0005]
When assembling the disassembled stairs on-site, it is necessary to securely attach a large number of parts such as treads, vertical bars, handrails, etc., with a predetermined accuracy, such as arranging the treads horizontally with accurate kick-up dimensions. Therefore, in order to reduce the cost when installing the stairs, it is important to improve the efficiency of the assembly work. An object of the present invention is to provide a handrail attachment structure, in particular, in order to facilitate the assembly of stairs on site.
[0006]
[Means for Solving the Problems]
In view of the above-described problems, the present invention provides a handrail for easily assembling a spiral staircase or the like on the site when the parts of the staircase are assembled on-site to reduce the size and weight at the time of delivery to the site. Provide structure.
[0007]
Since the column supporting the tread is the longest part and is difficult to handle, it is desirable to disassemble it more compactly. However, this support is an important member that transmits the load transmitted from the tread to the floor, the ground, etc., and it is necessary to ensure sufficient strength to resist the external force acting on the support.
[0008]
Therefore, the support pipes constituting the support are divided into a plurality of parts and connected vertically in the field. At this time, if a connecting tool is interposed between the column pipes adjacent to each other in the vertical direction to prevent the lateral displacement at the connection portion of the column pipes, the shearing force acting on the columns can be resisted. Also, if a strut bolt is inserted into the strut tube, and nuts are screwed into both ends to clamp the strut tube, a plurality of strut tubes are integrated and resist bending moment and axial force acting on the strut. be able to.
[0009]
When attaching the vertical bar that supports the handrail to the end of the tread, if the lower end of the vertical bar penetrates the two treads, a through hole with a precise position and size is formed in the tread, and screws and field welding are performed. Since it is necessary to fix the vertical bar and each of the two treads, it takes a lot of time and cost for the installation work.
[0010]
Therefore, a tubular tread board fixing member that fixes adjacent treads is provided. The vertical bar that supports the handrail is tubular, and is placed above the tread fixing member so that the upper tread is sandwiched between the hole formed in the lower tread, the inside of the tread fixing member, and the upper tread The vertical rod bolt is inserted through the formed hole and the inside of the vertical rod. If nuts are screwed into both ends of the vertical rod bolts, the adjacent step plates, the horizontal plate fixing members, and the vertical rods can be clamped and fixed in a single nut tightening operation, reducing the time and cost of assembly work. Can be reduced.
[0011]
At this time, since the tread is firmly clamped by the tread fixing member and the vertical bar or nut, the tread fixing member and the vertical bar are shifted laterally even if the hole formed in the tread is larger than the diameter of the vertical bolt. And sufficient strength can be obtained. Therefore, by forming a large hole in the tread, errors during assembly can be absorbed, and the vertical bar can be easily attached.
If the handrail slope changes in the middle of the stairs, it is necessary to change the attachment angle of the handrail to the vertical bar in the handrail slope direction accordingly. However, the slope of the handrail of the spiral staircase or the curved staircase is affected by the kick-up dimension, the curve radius, and the vertical and horizontal widths of the treads, so that the handrail slope cannot be limited to several constant angles.
[0013]
Therefore, the vertical bar cannot be selected from several types of ready-made products with different handrail attachment angles. For this reason, the vertical bar is cut obliquely according to the slope of the handrail, and the handrail is attached to the vertical bar by field welding, which cannot be produced without the skills of experienced craftsmen, increasing work time and costs. It is a factor to make.
[0014]
Therefore, if a handrail support is provided on the nut screwed to the upper end of the vertical rod, and the handrail support has a function of adjusting the mounting angle of the handrail in the direction of the slope according to the handrail slope, the handrail of any slope will be provided. On the other hand, since an off-the-shelf handrail holder can be used, it is not necessary to perform on-site welding, and the handrail can be easily attached. In addition, the attachment angle of the handrail receiver in the direction around the axis of the vertical bar can be adjusted by turning a nut screwed to the upper end of the vertical bar bolt.
[0015]
In a straight staircase, even if the kick-up dimension changes in the middle of the staircase, the handrail only changes its slope. However, in a spiral staircase or a curved staircase, when the kick-up dimension or the curve radius changes, the curvature changes with a twist along with the handrail slope. Therefore, the handrail has a complicated shape that changes three-dimensionally, and its manufacture and attachment are difficult.
[0016]
Therefore, by dividing the handrail at the position of the vertical bar and attaching the end thereof to the vertical bar to form a series of handrails, the handrail can be made in a simple shape even when the kick-up dimension or the curve radius changes. Here, the three-dimensional subtle change of the handrail is absorbed by adjusting the attachment angle of each handrail in the direction around the axis of the vertical bar and the attachment angle in the gradient direction.
[0017]
At this time, if two handrail supports that can rotate around the axis of the vertical bar are provided and the ends of the handrails adjacent to these handrails are respectively attached, the mounting angle in the direction of the vertical axis of each vertical bar is adjusted. can do. Also, if the handrail is rotatable in the handrail gradient direction with respect to the handrail receiver, the attachment angle in the handrail gradient direction can also be adjusted.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a handrail mounting structure according to the present invention will be described with reference to the drawings. FIG. 1 is a side view of a staircase having a handrail mounting structure according to the present invention. In this staircase, a tread unit 6 having a tread plate 5 that receives a load of a person or the like is spirally attached to a support column 4 that is erected on a base surface 2 of a floor 1 via a base plate 3. A vertical stair bar 8 that supports the handrail 7 is a spiral staircase in which the floor plate 5 is erected.
[0019]
2 is a longitudinal sectional view of the support column, FIG. 3 is a perspective view of the connector, FIG. 4 is a perspective view of the top plate, and FIG. 5 is a perspective view of the base plate. The column 4 is connected between a plurality of column pipes 9 connected in the vertical direction, a column 10 interposed between the column pipes 9 adjacent to each other in the vertical direction, and the upper end of the column 4 so as to block the upper end of the column 4. A top plate 11, a base plate 3 disposed at the lower end of the support column 4 to fix the support column 4 to the base surface 2 of the floor 1, a plurality of support bolts 12 inserted through the support tube 9, and a plurality of support tubes A lower nut 13 and a clamping nut 14 that are screwed to the support bolt 12 so as to be integrated by clamping the 9 are provided.
[0020]
The strut tube 9 is a steel tube that is divided into a predetermined number so as to be short in length and light in weight and can be handled by human power. Both ends of the connecting tool 10 are fitted to the two column pipes 9 to be connected, and the column 10 is a steel cylinder for preventing lateral displacement of the column pipe 9. The diameter of the connector 10 is set to a size that can be fitted into the column tube 9, and a bolt through hole 15 for penetrating the column bolt 12 is formed at the center thereof. Further, a flange 16 having the same outer diameter as that of the support pipe 9 is formed on the peripheral surface of the center of the connection tool 10 to prevent the connection tool 10 from fitting into the support pipe 9.
[0021]
The top plate 11 is a steel disc that closes the upper end of the support column 4, and the fitting portion 17 formed on the lower surface of the top plate 11 is fitted to the uppermost support column tube 9 b to prevent lateral displacement with respect to the support column 9. Has been. The outer diameter of the top plate 11 is the same as the outer diameter of the column tube 9, and the outer diameter of the fitting portion 17 is large enough to be fitted to the column tube 9b. In addition, a bolt through hole 18 is formed in the center of the top plate 11 for allowing the support bolt 12 to pass therethrough.
[0022]
The base plate 3 is a steel square plate disposed at the lower end of the support column 4 so as to fix the support column 4 to the base surface 2 of the floor 1, and anchor bolts 19 set on the base surface 2 of the floor 1, and The corners near the four corners are fixed to the base surface 2 by nuts 20 screwed into the anchor bolts 19. On the upper surface of the base plate 3, a ring-shaped fitting portion 21 that is fitted into the lowermost column tube 9 a is formed to prevent lateral displacement of the column 4. Further, a lower nut 13 is formed at the center of the upper surface of the base plate 3 so that the lower end of the lowermost support bolt 12a is screwed together.
[0023]
The column tube 9, the connector 10, the top plate 11, and the base plate 3 are not limited to steel, and may be formed of aluminum, plastic, or the like, and the shape thereof may be various such as a circle and a polygon. it can.
[0024]
The support bolts 12 are a plurality of bolts having a handleable length, and are inserted through the support pipe 9 and the connection tool 10 and screwed to both sides of the connection nut 22 to be connected in the vertical direction. The lower end of the lowermost support bolt 12a is screwed into a lower nut 13 formed integrally with the base plate 3, and the upper end of the uppermost support bolt 12b passes through the top plate 11 and a clamping nut 14 is screwed. Is done. By firmly tightening the pinching nut 14, the plurality of support pipes 9 and the connection tool 10 are pinched and integrated by the top plate 11 and the base plate 3.
[0025]
In addition, as shown in FIG. 2, each column bolt 12 should just be the length which can be handled, and when reducing the column tube 9 in order to reduce the weight of the column tube 9, one column bolt 12 is provided. A block 23 that is inserted into the plurality of column pipes 9 and includes the plurality of column tubes 9, the plurality of connectors 10, and one column bolt 12 is configured. In the case where handling is possible, a single column bolt 12 may be inserted into all the column tubes 9 without being connected by the connection nut 22, and the whole may be formed as one block 23.
[0026]
The length of each column bolt 12 is such that when the connection nut 22 is rotated until its lower surface comes into contact with the upper surface of the connector 10, the upper end of each column bolt 12 is located in the middle of the connection nut 22. The length can be connected to the bolt 12.
[0027]
On the upper side of the pinching nut 14, a vertical bar bolt 24 is screwed to stand. On the top surface of the top plate 11, a tubular end support rod 26 that supports the end of the handrail of the landing 25 is arranged so that the support rod bolt 24 is inserted. A lid nut 28 formed with a portion 27 is screwed onto the upper end of the vertical rod 24 to fix the vertical rod 26.
[0028]
6 is a perspective view of the tread unit, and FIG. 7 is a side view of the tread unit attached to the column. The tread unit 6 is a unit in which a tread plate 5 made of a substantially fan-shaped plate is integrated with a tread plate mounting tube 30 via a bracket 29 made of two substantially triangular plates. It is fitted and a predetermined number of spirals are attached to the pillars 4. In addition, the inner diameter of the tread board attachment tube 30 is set to a size that can be fitted onto the support column 4. When the tread plate 5 is small, only one bracket 29 may be provided, or the tread plate 5 may be directly attached to the tread plate attachment pipe 30 without providing the bracket 29.
[0029]
Two screw holes 31 are formed vertically on the surface of the tread plate mounting tube 30 opposite to the tread plate 5. The tread plate 5 is adjusted horizontally by adjusting the amount of rotation of each push screw 32 by temporarily fixing the tread plate unit 6 by abutting the push screws 32 screwed into the screw holes 31 to the outer periphery of the support column 4. Is done.
[0030]
A single rivet hole 33 is formed in the center of the surface of the tread plate mounting tube 30 in a direction perpendicular to the tread plate 5. By inserting the rivet 34 into the rivet hole 33 and the rivet hole of the support column, the tread unit 6 Is fixed to the column 4. Here, the position of the tread board attachment tube 30 is a position where the rivet hole 33 does not interfere with the connection tool 10 of the support column 4. Instead of the rivet 34, a taper pin, a tap screw or the like may be used.
[0031]
FIG. 8 is a side view of the main part showing the arrangement of the tread board and the vertical bar, and FIG. 9 is a cross-sectional view of the vertical bar installation part. Adjacent footboards 5 are arranged such that the vicinity of the front end and the vicinity of the rear end overlap in a plane. In the vicinity of the front end of the step board 5, a tubular tread board fixing member 35 that is inserted between the overlapping parts of the tread board 5 and fixes the adjacent tread boards 5 is arranged so that there is no difference in deflection between the tread boards.
[0032]
Above this tread board fixing member 35, a tubular vertical pole 8 that supports the handrail 7 is erected on the upper tread board 5 in alignment with the tread board fixing member 35, and the tread board fixing member 35 and the vertical pole 8 are aligned. On the other hand, a vertical rod 36 is inserted. A bolt through hole 37 is formed in the vicinity of the tip of the tread plate 5 to allow the vertical rod bolt 36 to pass therethrough.
[0033]
A substantially cylindrical lid nut 39 in which a fitting portion 38 that is fitted to the vertical rod 8 and prevents lateral displacement with respect to the vertical rod 8 is formed is screwed onto the upper end of the vertical rod 36. The diameter of the lid nut 39 is the same as the outer diameter of the vertical rod 8, and the diameter of the fitting portion 38 is large enough to fit the vertical rod 8. A pinching nut 40 is screwed to the lower end of the vertical pole bolt 36 from the lower surface side of the lower tread 5.
[0034]
The pinching nut 40 is tightened so as to pinch the tread plate 5, the tread plate fixing member 35, and the vertical bar 8. By tightening the pinching nut 40, the two tread plates 5, the tread plate fixing member 35, and the vertical bar 8 can be fixed to each other by a single nut tightening operation. The length of the vertical rod 36 is adjusted so that the upper end thereof is located in the middle of the lid nut 39.
[0035]
When the tread plate 5, the tread plate fixing member 35, and the vertical bar 8 are pinched, a strong frictional force is generated between them. By utilizing this frictional force, there is no need to make the inner peripheral surface of the vertical rod bolt 36 and the bolt through hole 37 contact each other and to resist the horizontal force, so that the bolt through hole 37 of the tread plate 5 is made to have a diameter of the vertical rod bolt 36. Can be larger. Therefore, a margin for assembling the tread plate 5 and the vertical bar 8 can be secured, and workability is improved.
[0036]
On the upper side of the lid nut 39, a substantially cylindrical handrail support bracket 41 having a screw formed on the peripheral surface near the lower end is screwed. An axial cut 42 is formed at the upper end of the handrail support bracket 41, and a part of a disk-shaped handrail receiver 43 to which a continuous columnar handrail 7 is attached is sandwiched.
[0037]
The handrail receiver 43 is supported by the handrail receiver support fitting 41 through a pin 44 so as to be swingable, and the attachment angle of the handrail 7 can be adjusted in the gradient direction of the handrail 7. In addition, the handrail receiver 43 can be adjusted in angle in the direction around the axis of the vertical bar 8 by turning the lid nut 39. The contact surface of the handrail receiver 43 with the handrail 7 is formed in a curved surface so as to attach the vicinity of the lower portion of one side surface of the handrail 7, and a screw hole 46 for fixing the handrail 7 with the screw 45 is formed. The handrail receiver 43 may be formed with a contact surface with the handrail 7 as a folded surface so that the polygonal handrail 7 is attached.
[0038]
Next, the procedure for assembling the stairs will be described. First, the four anchor bolts 19 are set so as to protrude upward from the base surface 2 of the floor 1. The base plate 3 is disposed on the base surface 2 by inserting a hole near the corner through the anchor bolt 19. A nut 20 is screwed into the anchor bolt 19 to fix the base plate 3 to the base surface 2.
[0039]
The lowermost support bolt 12a is screwed onto the lower nut 13 formed on the upper surface of the base plate 3 and is erected. The lowermost column tube 9 a is fitted on the fitting portion 21 of the base plate 3 and is erected on the base plate 3. At this time, the lowermost column bolt 12a is inserted through the lowermost column tube 9a.
[0040]
The lower side of the connector 10 is fitted to the upper end of the lowermost column tube 9a, and the lower surface of the flange 16 is brought into contact with the upper surface of the column tube 9a. At this time, the lowermost support bolt 12 a is inserted through the bolt through hole 15 of the connector 10. The lower end of the upper column tube 9 is fitted on the upper side of the connection tool 10, and the lower end surface thereof is brought into contact with the upper surface of the flange 16. By repeating this operation, a predetermined number of support pipes 9 are connected through the connection tool 10.
[0041]
The lower end of the connector 10 is fitted to the upper end of the column pipe 9 connected in a predetermined number, and the connection nut 22 is screwed to the upper end of the lowermost column bolt 12a. The connecting nut 22 is tightened and the support pipe 9 is clamped via the connecting tool 10 at the upper end to stabilize the support post 4 in the process of assembly, and the assembly of the first block 23a is completed.
[0042]
The next column bolt 12 is screwed onto the upper side of the connection nut 22 to connect the column bolt 12, and the blocks 23 from the second block 23 to the final block 23 b are assembled in order by the same procedure as the first block 23 a. In the final block 23b, the top plate 11 is arranged in place of the connection tool 10 at the upper end, the clamping nut 14 is firmly tightened, and the entire support column 4 is integrated to complete the assembly of the support column 4.
[0043]
The struts 4 are inserted into the tread board mounting pipe 30 and a predetermined number of tread board units 6 are stacked on the base plate 3. The uppermost tread board unit 6 is lifted so that the height of the tread board 5 is lower than the height (H) of the landing 25 by a predetermined kick-up dimension (h), and the direction thereof is adjusted to a predetermined direction. The push screw 32 is screwed into the two screw holes 31, and the rotation amount of the push screw 32 is adjusted and temporarily fixed so that the tread plate 5 becomes horizontal.
[0044]
In the same procedure, the other tread board units 6 are arranged in a spiral form in order from the top and temporarily fixed with the push screw 32. The reason why the upper tread board unit 6 is temporarily fixed is that fine adjustment of the kick-up dimension (h) is performed at the lowermost stage.
[0045]
A tread plate fixing member 35 is inserted from the side into a portion where adjacent tread plates 5 overlap in a plane, and the position is aligned with the bolt through hole 37. In addition, by arranging the tread board fixing member 35, the kick-up dimension (h) and the plane angle of each tread board 5 can be set correctly.
[0046]
A vertical bar 8 is erected on the upper surface of the upper tread 5 by aligning the axis with the tread fixing member 35. A vertical rod bolt 36 is inserted into the horizontal plate fixing member 35, the vertical rod 8, and the bolt through hole 37, and a lid nut 39 is screwed onto the upper end of the vertical rod 8, and a clamping nut 40 is inserted from the lower surface side of the lower horizontal plate 5. Screw together. At this time, a handrail receiver support fitting 41 that supports the handrail receiver 43 is screwed into the lid nut 39.
[0047]
The lid nut 39 is turned to match the direction of the handrail 7 and the direction of the handrail receiver 43, and the handrail 7 is fixed with the screw 45. Here, the handrail receiver 43 can swing, and the attachment angle can be adjusted according to the gradient of the handrail 7 so as to be in close contact with the handrail 7.
[0048]
A hole is made in the column tube 9 from the outside of the rivet hole 33 of the tread board unit 6. The pinching nut 40 of the vertical pole bolt 36 is tightened, and the rivets 34 are inserted and fixed in the rivet holes of the tread plate unit 6 and the column tube 9 to complete the assembly of the stairs.
[0049]
According to the said structure, the stairs which have sufficient intensity | strength can be installed in the existing building etc. by assembling on the site | site using a volt | bolt the step decomposed | disassembled into the small dimension and a lightweight part. Further, since the staircase is provided with a portion that absorbs an error, it can be easily assembled with high accuracy.
[ 0050 ]
FIG. as well as FIG. The embodiment of the footboard unit provided with the ring-shaped handrail is shown. FIG. Is a perspective view of a tread unit provided with a ring-shaped handrail, FIG. FIG. 4 is a side view of a footboard unit provided with a ring-shaped handrail attached to a column.
[0051]
This tread board unit 54 is substantially the same as the tread board unit 6 of FIGS. 6 and 7, but includes a ring-shaped handrail 55 as an inner handrail. The ring-shaped handrail 55 includes a ring 56 having a circular cross section that surrounds the support column 4 and a connecting member 57 that connects the ring 56 to the vicinity of the upper end of the outer peripheral surface of the tread plate mounting tube 30. It is arranged to be located.
[0052]
When a spiral handrail similar to the outer handrail is used for the inner handrail, the handrail is easy to slip because the slope of the handrail becomes too large. However, the ladder-shaped handrail is configured by providing each step board unit 54 with the ring-shaped handrail 55. Will not slip. In addition, since the vicinity of the inside of the tread 5 where the step width becomes small is partitioned by the ring 56, a predetermined step width can be secured even when the diameter of the column 4 is small. Therefore, the support column 4 can be made thin, and the cost can be reduced.
[0053]
The ring-shaped handrail 55 is not limited to the one integrated with the tread board mounting tube 30 but may be another component. In this case, a ring-shaped handrail attachment tube that is fitted around the tread plate attachment tube 30 may be provided at the center of the ring-shaped handrail.
[0054]
FIG. as well as FIG. The embodiment of the footboard fixing member and the vertical bar fixed to the footboard with a support pressure tool interposed therebetween is shown below. FIG. Is a cross-sectional view of a vertical bar installation part where a support tool is interposed, FIG. FIG. The support member 58 includes a fitting portion 59 to be fitted to the tread board fixing member 35 or the vertical rod 8 and a washer 60, and is formed around a bolt insertion hole 61 into which the vertical rod bolt 36 is inserted. Yes.
[0055]
8 and 9, the end surface of the footboard fixing member 35 or the vertical bar 8 and the footboard 5 are directly pressed against each other, but in this embodiment, both are pressed against each other via a support tool 58. Yes. That is, the fitting portion 59 of the pressure bearing member 58 is fitted to the footboard fixing member 35 and the vertical bar 8, and the bolt through hole 37, the footboard fixing member 35, the vertical bar 8, and the pressure bearing tool 58 formed in the footboard 5. By inserting the vertical bolt 36 into the bolt insertion hole 61 and tightening the cover nut 39 and the pinching nut 40 that are screwed into the vertical bolt 36, The tread plate 5 is indirectly in pressure contact with the support pressure tool 58.
[0056]
The end surface of the tread plate fixing member 35 or the vertical bar 8 is in contact with the back surface of the washer 60, and the surface of the washer 60 is pressed against the tread plate 5. Therefore, since the area where the tread plate 5 is pressed can be increased, the tread plate 5 can be tightened with a strong force even when the tread plate 5 is formed of a low-strength material.
[0057]
The bolt insertion hole 61 of the support bar 58 has a size that allows the vertical rod 36 to be inserted therein, and prevents the horizontal displacement of the vertical support 58 with respect to the vertical bar 36. In addition, the fitting portion 59 of the support pressure tool 58 is sized so as to be fitted to the tread board fixing member 35 and the standing bar 8, and prevents lateral displacement of the tread board fixing member 35 and the standing pole 8 with respect to the support pressure tool 58. For this reason, even before the pinching nut 40 is strongly tightened, the tread board fixing member 35 and the vertical rod 8 are not laterally displaced with respect to the vertical rod 36. Therefore, the trouble of matching the axis of the footboard fixing member 35 with the axis of the vertical bar 8 can be saved.
[0058]
The vertical rod 36 is threaded only at the portion where the lid nut 39 or the pinching nut 40 is located, so that the supporting pressure tool 58 can slide in the axial direction of the vertical rod 36. Therefore, the tread plate fixing member 35 and the vertical bar 8 can be fixed to the tread plate 5 simply by tightening the lid nut 39 and the pinching nut 40. In addition, if a screw is formed in the bolt insertion hole 61 of the support pressure tool 58 and the full length of the vertical rod bolt 36 and the support pressure tool 58 is screwed to the vertical pressure bolt 36, each tread plate 5 is supported by the pressure support 58. Since it can pinch only by, safety | security can be improved further.
[0059]
FIG. ~ FIG. 5 shows an embodiment of a handrail receiver that slides around the axis of the vertical bar. FIG. Is a perspective view of a vertical bar with a handrail set that slides around the axis of the vertical bar, FIG. Is a cross-sectional view of a vertical bar with a handrail holder that slides around the axis of the vertical bar, FIG. Is a perspective view of a lid nut on which a handrail receiver slides, FIG. Is a perspective view of a handrail holder that slides around the axis of the vertical bar, FIG. Pinch the handrail holder Groove cover FIG.
[0060]
This embodiment is A lid nut 67 formed with a central shaft 62 and a groove 63 surrounding the central shaft 62 at the upper end of the vertical rod 8; Slide along groove 63 two A handrail receiver 64, and a groove lid 65 for closing the groove 63 so that the handrail receiver 64 is not detached. Set up The structure of the handrail of the staircase in which the end of the handrail 66 divided at the position of the vertical bar 8 is attached to the handrail receiver 64 so as to be rotatable in the gradient direction.
[0061]
A lid nut 67 is screwed onto the upper end of the vertical rod 36, and a central shaft 62 protruding upward is formed at the center of the lid nut 67. Further, a wall 68 protruding upward is formed on the outer periphery of the lid nut 67, and a groove 63 surrounding the center shaft 62 is constituted by the wall 68, the center shaft 62 and the nut body 69. On the lower side of the nut main body 69, a fitting portion 70 to be fitted to the vertical rod 8 is formed, and the lateral displacement of the lid nut 67 with respect to the vertical rod 8 is prevented.
[0062]
The handrail receiver 64 includes a crescent-shaped sliding portion 71 that slides along the groove 63 and an attachment portion 72 to which the handrail 66 is attached. The outer surface of the sliding portion 71 is formed to have the same curvature as the inner side of the wall 68 so as to be in close contact with the wall 68. Further, the center of the sliding portion 71 is set to a thickness that can be fitted into the groove 63 so as to stop the forward and backward movement.
[0063]
The mounting portion 72 is composed of two plates formed in the vicinity of the end portion of the pin hole 74 through which the pin 73 for mounting the handrail 66 is inserted, and protrudes out of the wall 68 so that the outside of the sliding portion 71 is located. It is juxtaposed on the surface. The plate width direction is a direction orthogonal to the surface of the groove 63. The length from the lower end of the mounting portion 72 to the lower end of the sliding portion 71 is the same as or longer than the height of the wall 68 so as not to prevent the lower surface of the sliding portion 71 from coming into close contact with the upper surface of the nut body 69. Has been.
[0064]
Above the lid nut 67, a groove lid 65 is disposed to block the groove 63 and prevent the handrail receiver 64 from being detached. The groove lid 65 has an upper plate 75 having the same diameter as the lid nut 67, a flange 76 formed downward on the outer periphery of the upper plate 75, and a projection formed at the center of the lower surface of the upper plate 75. It comprises a lid bolt 77 screwed onto the nut 67, and the handrail receiver 64 is clamped by the groove lid 65 and the lid nut 67, thereby preventing the handrail receiver 64 from sliding. The height of the flange 76 is the same as or shorter than the length from the upper end of the sliding portion 71 to the upper end of the mounting portion 72 so as not to prevent the upper surface of the sliding portion 71 from coming into close contact with the upper plate 75. Is done.
[0065]
Next, a procedure for attaching the handrail 66 will be described. The handrail 66 is not continuous like the handrail 7 of FIGS. 8 and 9, but is divided at the position of the vertical bar 8, and the end is attached to the handrail receiver 64.
[0066]
First, the lid nut 67 screwed to the vertical rod 36 is tightened and fixed. At this time, adjustment is made so that the tip of the vertical rod 36 is located in the middle of the lid nut 67. The sliding portion 71 is fitted into the groove 63 of the lid nut 67 to install the handrail receiver 64. Two handrail receivers 64 are installed so that the handrails 66 are attached to both sides of the vertical bar 8.
[0067]
A lid bolt 77 is screwed onto the lid nut 67 to dispose the groove lid 65 and restrict the detachment of the handrail receiver 64. At this time, the groove lid 65 is not excessively tightened so that the handrail receiver 64 can slide along the groove 63. The handrail receiver 64 is slid to match the direction of the attachment portion 72 with the direction of the handrail 66. The end of the handrail 66 is inserted between the two plates of the attachment portion 72, the positions of the pin holes 74 of the handrail 66 and the attachment portion 72 are aligned, and the handrail 66 is rotatably attached through the pin 73.
[0068]
When the groove lid 65 is strongly tightened, the lid nut 67 and the groove lid 65 pinch the sliding portion 71 up and down, and the attachment of the handrail 66 is completed. At this time, since the handrail receiver 64 does not slide, the handrail 66 does not swing around the vertical bar 8. Note that the length of the central shaft 62 is shorter than the length of the sliding portion 71 in the vertical direction so that the sliding portion 71 is not obstructed.
[0069]
In this handrail receiver 64, the handrail receiver 64 is slidable around the axis of the vertical bar 8 until the handrail 66 is attached, and the handrail 66 is rotatably attached to the handrail receiver 64. Therefore, the handrail 66 has a gradient and curvature. Even in the case of a change, the handrail 66 can be easily attached. Furthermore, since the handrail 66 is divided at the position of the vertical bar 8, the member length of the handrail 66 is short, and workability when installing stairs in an existing building can be improved.
[0070]
FIG. as well as FIG. 2 shows an embodiment of two types of handrail receivers that are screwed onto the vertical rod bolts. FIG. Is a perspective view of two types of handrail receivers screwed to a vertical rod bolt, FIG. FIG. 3 is a cross-sectional view of two types of handrail receivers that are screwed onto a vertical rod bolt. This embodiment relates to two types of handrail receivers 78 and 79 that are screwed into the vertical rod bolt 36 and are rotatable about the vertical axis of the vertical rod 8, and are arranged so as to overlap vertically.
[0071]
The lower handrail receiver 78 is formed with a mounting portion 81 to which the handrail 66 is attached on the side surface of the lid nut 80, and a screw hole 82 into which the vertical rod bolt 36 is screwed vertically penetrates. The attachment portion 81 is formed of a single plate, and supports the handrail 66 so as to be rotatable in the gradient direction via a pin 84 inserted through a pin hole 83 formed near the tip thereof. Further, the upper handrail receiver 79 has the same mounting portion 81 as the lower handrail receiver 78 on the side surface of the nut 86 having the same diameter as the lid nut 80 and a screw hole 85 formed in the center of the lower surface. It is a thing.
[0072]
FIG. as well as FIG. 5 shows an embodiment of a handrail receiver screwed to a vertical bar bolt of a vertical bar having a handrail attachment portion formed on the peripheral surface. FIG. Is a perspective view of a handrail receiver that is screwed into a vertical rod bolt of a vertical rod provided with a mounting portion, FIG. FIG. 4 is a cross-sectional view of a handrail receiver screwed onto a vertical rod bolt of a vertical rod provided with an attachment portion.
[0073]
In this embodiment, a vertical bar 87 as a handrail receiver to which a handrail 66 is attached to an attachment portion 81 formed on the peripheral surface, and a vertical bar bolt 36 of the vertical bar 87 are screwed together, and the axis of the vertical bar 87 is The present invention relates to a handrail receiver 88 that is rotatable.
[0074]
The vertical bar 87 has an attachment portion 81 for a handrail 66 formed near the upper end of the peripheral surface thereof, and has a function as a handrail receiver that can rotate around its axis. The mounting portion 81 is FIG. as well as FIG. This is the same as the attachment part 81 of FIG. The handrail receiver 88 has an attachment portion 81 for the handrail 66 formed on the side surface of the lid nut 89, and a screw hole 90 is formed at the center of the lower surface.
[ 0075 ]
【The invention's effect】
In the staircase equipped with the handrail mounting structure according to the present invention, the parts to be carried into the site are reduced in size and weight by assembling the parts of the staircase at the site, so that they can be transported from the factory or installed on the site. There is no need for a trailer or crane, and parts can be brought in from a small entrance in renovation work, and stairs can be easily installed in existing buildings.
In addition, by providing a part that absorbs errors and assembling using bolts, field welding that requires a high degree of experience is no longer necessary, and the stairs can be easily assembled, improving safety and improving the stairs. The installation time and cost can be reduced. In particular, the handrail receiver allows the handrail mounting angle to be adjusted according to the handrail slope, so that even if the handrail slope changes due to variations in the circumference of the staircase, The angle of the gradient direction can be adjusted.
[0077]
Further, by dividing the handrail at the position of the vertical bar, the rounding process becomes unnecessary, and a handrail having a complicated shape can be easily attached. In this case, since the length of the handrail is shortened, the work is facilitated even when stairs are installed in an existing building.
[Brief description of the drawings]
FIG. 1 is a side view of a staircase having a handrail mounting structure according to the present invention.
[Figure 2] Vertical section of the column
FIG. 3 is a perspective view of a connection tool.
FIG. 4 is a perspective view of the top board.
FIG. 5 is a perspective view of a base plate.
FIG. 6 is a perspective view of the tread unit.
FIG. 7 is a side view of the tread unit attached to the column.
FIG. 8 is a side view of the main part showing the arrangement of the treads and vertical bars.
FIG. 9 is a cross-sectional view of the vertical bar installation part
[Figure 10 ] Perspective view of tread unit with ring-shaped handrail
[Figure 11 ] Side view of a footboard unit with a ring-shaped handrail attached to the column
[Figure 12 ] Cross-sectional view of the vertical bar installation part where the bearing tool is interposed
[Figure 13 ] Perspective view of bearing tool
[Figure 14 ] Perspective view of a vertical bar with a handrail holder that slides around the vertical axis of the vertical bar
[Figure 15 ] Cross-sectional view of a vertical bar with a handrail set that slides around the vertical axis
[Figure 16 ] Perspective view of lid nut with sliding handrail holder
[Figure 17 ] Perspective view of the handrail holder that slides around the axis of the vertical bar
[Figure 18 ] Hold the handrail holder Groove cover Perspective view
[Figure 19 ] Perspective view of two types of handrail receivers screwed onto a vertical bar bolt
[Figure 20 ] Cross-sectional views of two types of handrail receivers screwed onto the vertical rod
[Figure 21 ] Perspective view of a handrail receiver screwed into a vertical rod bolt of a vertical rod provided with a mounting portion
[Figure 22 ] Cross-sectional view of the handrail receiver screwed onto the vertical rod bolt of the vertical rod with the mounting portion
[Explanation of symbols]
4 props
5 Treadle
6 Treadle unit
7 Handrail
8 Tachiko stick
9 Strut pipe
10 Connecting tools
12 Prop bolt
13 Lower nut
14 Clamping nut
22 Connection nut
32 Push screw
34 Rivet
35 Tread plate fixing member
36 Vertical rod bolt
39 Cap nut
40 clamping nut
43 Handrail holder

Claims (4)

  A nut for fixing the elevating bar to the tread is screwed to both ends of the erecting bar bolt inserted into the bolt through hole of the tread and the tubular erecting bar erecting on the tread. A handrail receiver capable of adjusting the mounting angle of the handrail in the gradient direction of the handrail is provided. Handrail mounting structure.   2. The handrail according to claim 1, wherein a handrail support bracket is screwed onto the nut on the upper end side from above, and the handrail support is supported by the handrail support bracket so as to be swingable around a horizontal axis. Mounting structure. At both ends of the tread plate of the bolt through hole and the tubular erected on treadle Ritsuko rod inserted through the been Ritsuko rod bolts, nuts for fixing the Ritsuko rod to said step plate is screwed, the upper end of Ritsuko rod center The nut on the upper end side that forms a shaft and a groove surrounding it, two handrail receivers that can adjust the angle in the direction around the axis of the vertical bar by sliding along the groove, and the handrail receivers are separated The end of the handrail divided at the position of the vertical bar is attached to the handrail receiver so as to be rotatable about a horizontal axis so that the mounting angle is set in the gradient direction of the handrail. A handrail mounting structure characterized by being adjustable . Before Kimizofuta, cover bolts are formed to be screwed from above into the upper end of the nut, the handrail received in the upper end of the nut and Mizofuta to claim 3, characterized in that it is possible to clamp Attachment structure of handrail of description.

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