JP5305345B2 - Handrail support structure - Google Patents

Description

  The present invention relates to a support structure for a handrail that fixes a column supporting the handrail to an installation surface so that the angle can be adjusted.

  In recent years, an approach handrail is often provided at the front door. Such a place is a staircase or a slope, and the concrete surface, which is the installation surface on which the handrail is installed on the slope, is formed in an inclined shape.

  When handrails are also constructed at the same time as the concrete surface is formed, the bottom part of the handrail post is often fixed in an embedded shape, but the angle of the post shifts until the concrete hardens, and the details are very careful. This is a time-consuming work.

  Moreover, when attaching a handrail later, since a bracket is provided in the lower end part of a support | pillar and it fixes with an anchor bolt, the bracket which can adjust an angle is required.

  Conventionally, as a handrail that can be adjusted in angle, a positioning member having an arc-shaped positioning portion in a side view is covered with a rotating member having a rotating portion having an arc-shaped concave curved surface, and is rotated around an axis that penetrates the center. It is known that it has a structure in which a fixing member that is movably attached and screwed to a slider that is slidably attached to a rotating member abuts on a plurality of receiving portions provided on the positioning member so that the angle can be adjusted. (For example, refer to Patent Document 1).

  Further, as another support structure of the handrail, it is composed of a fixing member fixed to the installation surface and a movable member that swings and is fixed on the fixing member. A pivot shaft serving as a shaft is provided at the lower end thereof, a pair of adjustment pieces extending in a wing shape on the opposite side of the swing shaft are provided, and a through-hole through which an inclination adjustment bolt is inserted is provided in each adjustment piece. The fixing member has a bearing portion that receives the swinging shaft of the movable member and cannot rotate the inclination adjusting bolt at the upper edge of the through hole. There is known a tilt adjustment mounting structure comprising a concave support strip or a support surface having a polygonal inner edge in which the bearing of the bearing portion is substantially circumscribed on the side surface of the swing shaft. (For example, refer to Patent Document 2).

Japanese Patent No. 3813545 (Claims, FIGS. 2 to 5) JP 2008-196235 A (Claims, FIG. 1)

   However, in the one described in Patent Document 1, a positioning member fixed to the installation surface is covered with a rotating member so as to be rotatable with an axial core, and is screwed into a slider attached to the rotating member. Since the fixing member to be fixed is in contact with a plurality of receiving portions provided on the positioning member, the adjustment of the inclination angle is troublesome, and the strength of the fixing portion of the positioning member and the rotating member is not sufficient, There is a concern that the handrail tilts when an excessive load is applied to the handrail.

   Moreover, in the thing of patent document 2, in order to fix by the regulating member which inserts an inclination adjustment bolt in each of a pair of adjustment piece provided in the movable member, and is screwed together with an inclination adjustment bolt, it is to patent document 1 Although the strength of the fixing part can be increased compared to the described one, the adjustment of the inclination angle is troublesome and troublesome to install because the restriction member is screwed and fixed to the two inclination adjustment bolts. There is a problem that it takes.

   In addition, in each of Patent Documents 1 and 2, the fixing member, the inclination adjusting bolt, and the regulating member, which are fixing means, are only intended for fixing, and the appearance is not taken into consideration, and protrudes to the outside. A cover is required to hide the fixing member, the inclination adjusting bolt, the regulating member, and the like.

   The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a support structure for a handrail capable of easily adjusting the angle and improving the strength.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a support structure of a handrail for fixing a support column supporting a handrail to an installation surface so that the angle can be adjusted, and a rotating body fixed to a lower end portion of the support column; A support body fixed to the installation surface and rotatably supporting the rotating body, and a connecting member comprising a bolt and a nut rotatably connecting the rotating body and the support body. The rotating body is provided with an insertion hole into which the support column can be inserted at the upper end, the shaft hole is penetrated in the horizontal direction of the central portion, and a recess is formed on and below the concentric circle of the shaft hole. The support body includes a base portion fixed to the installation surface and a fixing portion standing on the upper surface of the base portion, and the fixing portion is fitted into the concave portion of the rotating body and is centered. The part is formed with a convex part in which a shaft insertion hole is formed, and the rotating body The concave portion is formed with an expanding taper surface that gradually expands toward the opening side, and the convex portion of the support body is formed with a narrow taper surface in which the expanding taper surface of the concave portion is slidably contacted, In a state where the concave portion of the rotating body and the convex portion of the supporting body are fitted, the nut is screwed into the protruding portion of the bolt of the connecting member that passes through the shaft hole of the rotating body and the shaft insertion hole of the supporting body. In combination, the rotating body and the support are fixed. In this case, the rotating body is formed by a pair of rotating halves having a semicircular hole portion that constitutes the insertion hole, the concave portion, and the shaft hole, and each rotating half includes both rotating halves. It is preferable to provide an accommodation recess for a fixing bolt and a nut that penetrates and fixes the body (claim 2).

  By comprising in this way, the recessed part which has the expansion taper surface provided in the rotation body fixed to the lower end part of a support | pillar, and the convex part which has the narrow taper surface provided in the support body fixed to an installation surface Can be slidably contacted to adjust the inclination angle of the support column, and with the angle adjusted, the projecting portion of the bolt of the connecting member that penetrates the shaft hole of the rotating body and the shaft insertion hole of the support body By screwing the nut and fixing the rotating body and the support body, the rotating body and the support body can be firmly fixed by frictional contact between the concave portion and the convex portion. In this case, the rotating body is formed by a pair of rotating halves having a semicircular hole portion that constitutes the insertion hole, the concave portion, and the shaft hole, and each rotating half includes both rotating halves. By providing a fixing bolt and nut receiving recess for fixing through the body, it is possible to facilitate the mounting work of the rotating body to the support column and to eliminate the exposure of the fixing bolt and nut to the outside. (Claim 2).

  The invention according to claim 3 is the support structure of the handrail according to claim 1 or 2, wherein the lower end portion of the rotating body is formed with a plurality of concavities and convexities that are continuous along the rotating direction of the rotating body, A bolt insertion groove having a locking recess for locking the position fixing nut in a non-rotatable manner is formed in a portion of the support body that is orthogonal to the rotation direction of the rotating body, and is locked in the locking recess. In addition, the tip of a position fixing bolt that is screwed to the position fixing nut is pressed and fixed to the concavo-convex portion.

  With this configuration, the tip of the fixing bolt that is screwed into the fixing nut locked in the locking recess of the bolt insertion groove provided in the support is pressed against the uneven portion provided in the rotating body. The rotating body fixed by the connecting member and the support body can be further fixed firmly.

  According to a fourth aspect of the present invention, in the handrail support structure according to any one of the first to third aspects, the rotating body is formed in a substantially spherical shape, and the fixed portion of the support body has a spherical surface of the rotating body. And the outer surface of the fixed portion is formed in a spherical shape continuous with the spherical surface of the rotating body.

  With this configuration, the gap between the rotating body and the support body can be reduced regardless of the inclination angle of the support column, and there is no step between the rotating body and the support body. It can be formed in a spherical shape.

  According to this invention, since it is configured as described above, the following excellent effects can be obtained.

  (1) According to the first aspect of the present invention, the concave portion having the expanding taper surface provided in the rotating body and the convex portion having the narrow taper surface provided in the support body are fitted so as to be in sliding contact. Therefore, the angle adjustment of the handrail support can be facilitated. Further, the strength can be improved by fixing the rotating body and the support body by frictional contact between the concave and convex portions.

  (2) According to the second aspect of the present invention, the attaching operation of the rotating body to the support can be facilitated, and the exposure of the fixing bolt and the nut to the outside can be eliminated. In addition to this, the aesthetics can be further improved.

  (3) According to the invention described in claim 3, the tip of the fixing bolt screwed into the fixing nut locked in the locking recess of the bolt insertion groove provided in the support is provided on the rotating body. In addition to the above (1) and (2), the rotating body and the support body can be further firmly fixed, and even if an excessive load is applied to the handrail Deformation of the handrail can be prevented.

  (4) According to the invention described in claim 4, the gap between the rotating body and the support body can be reduced regardless of the inclination angle of the support column, and the rotating body and the support body are formed in a substantially spherical shape. Therefore, in addition to the above (1) to (3), the aesthetic appearance of the support portion can be further improved.

It is a side view which shows an example of the support structure of the handrail which concerns on this invention. It is a side view which shows the principal part of the support structure of the handrail which concerns on this invention. It is a cross-sectional view of the support structure of the handrail. It is sectional drawing which follows the II line | wire of FIG. It is a side view which shows a part of inclination state in a cross section. It is a perspective view which shows the principal part of the support structure of the said handrail. It is a disassembled perspective view which shows the rotation body in this invention, a support body, a connection member, and a fixing member. It is a disassembled perspective view which shows the state which attaches the rotary body fixed to the support | pillar in this invention to a support body.

  Hereinafter, an embodiment of a handrail support structure according to the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIGS. 1 to 6, the handrail having the support structure according to the present invention includes, for example, a support 20 fixed to the installation surface 1 of the approach at the front door and a turn fixed to the lower end portion of the column 2. It is supported by a connecting member 30 including a connecting bolt 31 and a connecting nut 32 that rotatably connect the moving body 10, the rotating body 10 and the support body 20, and a handrail bracket 3 fixed to the upper end of the column 2. A handrail body 4 that can be bent and deformed. Note that a cover 5 is attached to a fixed portion of the support 20 and the rotating body 10.

  The rotating body 10 is formed in a substantially spherical shape, and an insertion hole 11 into which the support column 2 can be inserted is provided at the upper end portion. The shaft hole 12 is penetrated in the horizontal direction of the center portion, and the concentric circle of the shaft hole 12 is provided. A concave portion 13 is formed on the upper and lower sides. The concave portion 13 includes a circular concave portion 13a that is concentric with the shaft hole 12, and a straight concave portion 13b that is continuous with the lower end of the circular concave portion 13a. The circular recess 13a is formed with an expanding taper surface 13c that gradually expands toward the opening side.

  The rotating body 10 is composed of a pair of aluminum die-cast rotating halves 10 a and 10 b having a semicircular hole 11 a constituting the insertion hole 11, a recess 13, and a shaft hole 12. It is fixed with a cap nut 15. In this case, through-holes 16 of fixing bolts 14 for fixing both of the rotating halves 10a and 10b are provided in two left and right portions in each of the rotating halves 10a and 10b. In addition, receiving recesses 17a and 17b that can receive the head 14a of the fixing bolt 14 and the cap nut 15 are provided. That is, as shown in FIG. 3, in one rotating half 10 a, a through hole 16 through which the fixing bolt 14 is inserted, and a head 14 a of the fixing bolt 14 is accommodated on the opening side of the through hole 16. A recess 17a is provided. The other rotating half 10 b is provided with a through hole 16 through which the fixing bolt 14 is inserted, and an accommodation recess 17 b that accommodates the cap nut 15 on the opening side of the through hole 16. A hexagonal hole 14b is formed at the tip of the head 14a of the fixing bolt 14.

  A plurality of, for example, serrated irregularities 18 that are continuous along the rotation direction of the rotating body 10 are formed at the lower ends of both rotating halves 10a and 10b. Note that the shape of the concavo-convex portion 18 is not necessarily a sawtooth shape, and may be any shape as long as it is a plurality of continuous concavo-convex shapes.

  On the other hand, the support 20 is formed of a pair of aluminum die-cast members having a base portion 21 fixed to the installation surface and a fixing portion 22 standing on the upper surface of the base portion 21. In this case, the base portion 21 is formed in a semicircular shape, and through holes 21a into which the anchor bolts 6 screwed into the installation surface 1 can be inserted are formed on both sides thereof.

  In addition, the fixed portion 22 is fitted with the concave portion 13 of the rotating body 10, and a convex portion 24 in which a shaft insertion hole 23 into which the connecting bolt 31 can be inserted is formed in the central portion. . In addition, in the opening of the shaft insertion hole 23, an accommodation recess 25a that accommodates the head portion 31a of the connection bolt 31 or an accommodation recess 25b that accommodates the connection nut 32 is formed. The connecting nut 32 is formed of a cap nut.

  Further, the convex portion 24 is connected to a circular convex portion 24 a that fits into a circular concave portion 13 a that forms a part of the concave portion 13 of the rotating body 10, and a lower end of the circular convex portion 24 a, and is located in the straight concave portion 13 b of the concave portion 13. It consists of the straight convex part 24b loosely fitted with a gap. Due to the gap provided between the straight concave portion 13b and the straight convex portion 24b, the rotating body 10 can be rotated, that is, the column 2 can be inclined. In addition, the inclination angle of the support | pillar 2 can be set within 15 degrees, for example. The circular convex portion 24a is formed with a narrow tapered surface 24c with which the expanding tapered surface 13c of the circular concave portion 13a is slidably contacted.

  Further, a bolt insertion groove 27 having a locking recess 26 that locks the position fixing nut 40 so as not to rotate is formed in a portion of the support body 20 that is orthogonal to the rotating direction of the rotating body 10. In this case, the locking recess 26 is formed in a rectangular shape, and the position fixing nut 40 that is locked in the locking recess 26 so as not to rotate is formed in a rectangular shape. The rotating body 10 and the support body 20 are fixed by pressing the tip of the position fixing bolt 41 screwed to the position fixing nut 40 formed in this way against the concavo-convex portion 18. In this case, the position fixing bolt 41 is formed by a set screw having a hexagonal hole 41a at the tip. In addition, the fixing by the position fixing nut 40 and the position fixing bolt 41 is performed at two positions where the rotating body 10 and the support body 20 face each other.

  Further, the fixed portion 22 of the support 20 is provided with a spherical surface receiving portion 28 corresponding to the spherical surface of the rotating body 10, and the outside of the fixed portion 22 is formed in a curved shape that is continuous with the spherical surface of the rotating body 10.

  The shaft hole 12 of the rotating body 10 and the support body 20 in a state where the circular recess 13a in the recess 13 of the rotating body 10 formed as described above and the circular protrusion 24a of the protrusion 24 of the support body 20 are fitted. The rotating body 10 and the support body 20 are fixed by screwing the connecting nut 32 into the protruding portion of the connecting bolt 31 that passes through the shaft insertion hole 23 and the through hole 2 a provided in the lower end portion of the column 2. At this time, with the connecting bolt 31 and the connecting nut 32 loosely screwed together, the rotating body 10 is turned within a predetermined angle, for example, 15 degrees, and then the connecting bolt 31 and the connecting nut 32 are screwed together to turn the rotating body 10. And the support 20 are fixed. In this fixed state, the rotating body 10 and the support body 20 are firmly connected (fixed) by frictional contact between the expanding tapered surface 13c of the circular concave portion 13a and the narrow tapered surface 24c of the circular convex portion 24a.

  The cover 5 is formed of, for example, a stainless steel member, and a support body is provided at the lower end portion of the frustoconical cover body 5b having a circular opening 5a with which the rotating body 10 is rotatably contacted. A cylindrical base portion 5c that can be fitted to the outer peripheral edge of the 20 base portions 21 is formed.

  By attaching the cover 5 formed as described above to the fixed portion of the rotating body 10 and the support body 20, even when the rotating body 10 is rotated and the support column 2 is inclined, the rotating body 10 and the cover 5 are covered. Since the circular opening 5a is in contact, the fixed portion of the rotating body 10 and the support body 20 can be hidden from the outside.

  Next, a procedure for installing the handrail will be described. First, the lower end portion of the support column 2 is fitted into the insertion hole 11 of the rotating body 10 and fixed. In order to fix the rotating body 10, the lower end portion of the support column 2 is inserted into the hole 11a of the rotating half bodies 10a and 10b, and the shaft hole 12 and the support column 2 provided in the rotating half bodies 10a and 10b are provided. In a state in which the through holes 2a are matched, the fixing bolts 14 are inserted into the through holes 16 provided in the rotating halves 10a and 10b, and the cap nuts 15 are screwed into the protruding portions. The rotating body 10 is fixed in a state where the portion is held between the rotating halves 10a and 10b (see FIG. 8).

  After the rotating body 10 is fixed to the lower end portion of the support column 2 as described above, the position fixing bolt 41 is screwed into the engaging recess 26 of the bolt insertion groove 27 of one support body 20 in a penetrating manner. In a state where the fixing nut 40 is locked, the convex portions 24 of both the support bodies 20 are fitted into the concave portions 13 of the rotating body 10, and the shaft insertion hole 23 of the support body 20, the shaft hole 12 of the rotating body 10, and the column 2. The connecting bolt 31 is inserted into the through-hole 2a of the through-hole 2a, and the connecting nut 32 is loosely screwed into the protruding portion, that is, the rotating body 10 is rotatable with respect to the support body 20. Then, the rotating body 10 is rotated and the connecting bolt 31 and the connecting nut 32 are firmly screwed in a state where the support column 2 is tilted by a predetermined angle, and the rotating body 10 and the support body 20 are fixed.

  After the rotating body 10 and the support body 20 are fixed, the position fixing bolt 41 screwed into the position fixing nut 40 is screwed, and the tip of the position fixing bolt 41 is provided on the concave and convex portion 18 provided at the lower end portion of the rotating body 10. Press to fix.

  Next, the anchor bolt 6 is inserted into the insertion hole 23 provided in the base portion 21 of the support 20, and the anchor bolt 6 is screwed into the installation surface 1 to fix the column 2 to the installation surface 1. Thereafter, the cover 5 is moved from the upper side of the support column 2, the cylindrical base portion 5c of the cover 5 is fitted to the outer peripheral edge of the base portion 21, and the fixing portion of the rotating body 10 and the support body 20 is hidden from the outside.

  In the above embodiment, the case where the fixing portion between the rotating body 10 and the support body 20 is hidden from the outside by the cover 5 has been described. However, the fixing portion between the rotating body 10 and the support body 20 is used outside without using the cover 5. It may be exposed. Also in this case, since the rotating body 10 and the support body 20 can be formed in a substantially spherical shape, it is possible to improve the aesthetics of the support portion of the handrail.

DESCRIPTION OF SYMBOLS 1 Installation surface 2 Support | pillar 10 Rotating body 10a, 10b Rotating half body 11 Insertion hole 11a Hole part 12 Shaft hole 13 Recessed part 13a Circular recessed part 13c Expanding taper surface 18 Uneven part 20 Supporting body 21 Base part 22 Fixing part 23 Shaft insertion hole 24 convex portion 24a circular convex portion 24c narrow tapered surface 26 locking recess 27 bolt insertion groove 28 spherical receiving portion 30 connecting member 31 connecting bolt 32 connecting nut 40 position fixing nut 41 position fixing bolt

Claims (4)

A support structure for the handrail that fixes the support pillar supporting the handrail to the installation surface so that the angle can be adjusted,
A rotating body fixed to the lower end portion of the support column, a support body fixed to the installation surface and rotatably supporting the rotating body, and a bolt for rotatably connecting the rotating body and the supporting body. And a connecting member comprising a nut,
The rotating body is provided with an insertion hole into which the support column can be inserted at the upper end, the shaft hole is penetrated in the horizontal direction of the central portion, and a recess is formed on the concentric circle and the lower side of the shaft hole,
The support body includes a base portion fixed to the installation surface and a fixing portion standing on the upper surface of the base portion, and the fixing portion is fitted in the concave portion of the rotating body and has a central portion. Is formed with a convex portion in which a shaft insertion hole is formed,
The concave portion of the rotating body is formed with an expanding taper surface that gradually expands toward the opening side,
The convex part of the support is formed with a narrow taper surface in which the expansion taper surface of the concave part is slidably contacted,
In a state where the concave portion of the rotating body and the convex portion of the supporting body are fitted, the nut is screwed into the protruding portion of the bolt of the connecting member that passes through the shaft hole of the rotating body and the shaft insertion hole of the supporting body. Combine to fix the rotating body and the support,
A handrail support structure characterized by that. The support structure of the handrail according to claim 1,
The rotating body is composed of a pair of rotating halves having a semicircular hole portion forming the insertion hole, the concave portion and a shaft hole, and each rotating half passes through both rotating halves. A support structure for a handrail, characterized in that a fixing bolt for fixing and a receiving recess for a nut are provided. In the support structure of the handrail according to claim 1 or 2,
In the lower end portion of the rotating body, a plurality of concave and convex portions that are continuous along the rotating direction of the rotating body are formed,
A bolt insertion groove having a locking recess for locking the position fixing nut in a non-rotatable manner is formed in a portion of the support body that is orthogonal to the rotating direction of the rotating body,
A support structure for a handrail, characterized in that a tip of a position fixing bolt screwed into the position fixing nut locked in the locking recess is pressed and fixed to the concavo-convex portion. In the support structure of the handrail in any one of Claim 1 thru | or 3,
The rotating body is formed in a substantially spherical shape, and the fixed portion of the support body is provided with a spherical surface receiving portion corresponding to the spherical surface of the rotating body, and the outside of the fixed portion is formed in a spherical shape continuous with the spherical surface of the rotating body. A support structure for a handrail, characterized in that it is formed into a structure.

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