JP6388324B2 - Handrail for building - Google Patents

Description

  The present invention relates to a handrail for a building, and more particularly to a handrail for a building that is installed on a wall surface of a hallway or a staircase of a building.

  Conventionally, continuous handrails have been installed on the wall surfaces of buildings such as corridors and stairs to assist pedestrians. This type of handrail generally conceals a bracket fixed to an anchor bolt protruding from a wall material (wall panel), a head supported by the bracket, and the anchor bolt fixing portion of the bracket from the outside. And a cover material. In such a handrail, in order to reduce the weight of the handrail itself, the headboard is composed of a core material having a groove whose lower part is opened in the longitudinal direction, and a synthetic resin headboard body attached to the outer periphery of the core material. Is formed. The bracket is formed of an aluminum member.

  Many of such handrails are installed in hospitals and old-age facilities, etc., but the mounting wall is generally attached with a gypsum board and is not high in strength. Therefore, in order not to concentrate the load on the handrail on the gypsum board, the anchor is driven into the housing, or the anchor member that spreads behind the wall and distributes the force is used, but the load on the handrail If it is large, the surface of the gypsum board will be damaged.

  If further strength is required, use hard (JIS A6901 GB-RH) as the wall material (wall panel) instead of standard gypsum board (JIS A6901 GB-R)), or It is necessary to reinforce by sandwiching a plate material extending downward from the lower end of the bracket between the plaster board and the bracket.

  Conventionally, there has been known a technique in which a seat plate is interposed between a wall surface and a bracket so that an external force applied to a coping (handrail) is transmitted to an installation surface (see, for example, Patent Document 1). According to the device described in Patent Document 1, it is possible to install a handrail on a wall surface using a standard gypsum board as a wall material.

  The bracket fixing portion has a thick base portion fixed to the anchor bolt, and flange portions extending outward from both side surfaces and the lower surface of the base portion, and the bracket fixing portion is covered with a cap. What is worn is known (see, for example, Patent Document 2). According to the thing of this patent document 2, a handrail can be installed without interposing a seat plate between a wall surface and a bracket.

JP 2006-241814 A JP 2003-49521 A

  However, in the thing of patent document 1, since a seat plate is interposed between a wall surface and a bracket, while a member increases, construction takes time and there are problems, such as a loss of aesthetics.

  On the other hand, in the thing of patent document 2, when the standard gypsum board is used for the wall material, if the tightening force for fixing the anchor bolt and the bracket is increased, the gypsum board is deformed, so that the strong fixing is possible. Can not. Moreover, when a load is applied between the brackets of the headboard and the headboard is bent, the bracket rotates with the anchor bolt as a base point, and there is a concern that the lower end portion of the bracket sinks into the wall surface and damages the wall surface.

  Also, in this type of handrail, if the anchor bolt fixing part is exposed to the outside, the aesthetics will be impaired and pedestrians may be caught, so a cover material that covers the anchor bolt fixing part is attached. However, a device that does not catch on the cover material is desired so that a pedestrian can walk safely.

  The present invention has been made in view of the above circumstances, and prevents the bracket from rotating around the anchor bolt due to a load on the handrail, thereby improving load bearing performance and preventing damage to the wall panel. It is possible to provide a handrail for a building that can improve the aesthetics and improve the safety of pedestrians.

In order to solve the above-mentioned problems, a handrail for a building according to the present invention includes a bracket fixed to an anchor bolt protruding from a wall panel, a head supported by the bracket, and an anchor for fixing the anchor bolt of the bracket. A cover for covering the projecting portion of the anchor bolt, which is a bolt fixing portion , from the outside, wherein the bracket is a fixing portion fixed to the anchor bolt, and the support portion of the headboard And a connecting portion that connects the upper end portion of the fixing portion and the lower end portion of the supporting portion, and is provided below the lower end portion of the fixing portion along the surface of the wall panel via a stepped portion. is extended, rotating the set screw member is formed attachable laminar extension reinforcing piece, the cover member covers the the anchor bolt fixing part and the rotation stop screw member, the surface Is tilted from the part toward the lower part, and, on the back surface of the cover member, and the engagement claw to be engaged with the locking projection provided on the connecting lower surface of the bracket, both surfaces of the fixing portion of the bracket And a locking leg piece to be fitted in a horizontal fitting groove provided in the fixing portion of the bracket. The upper wall of the horizontal fitting groove faces the opening side. In this case, an inclined surface that is widened is formed (claim 1).

  By configuring in this way, a thin plate-like extension reinforcement piece is extended to the lower end portion of the fixed portion of the bracket, and by attaching a rotation set screw member that penetrates the extension reinforcement piece, the bracket is anchored by a load on the headboard. It is possible to prevent rotation with the bolt as a base point.

  In addition, since the surface of the cover material covering the anchor bolt fixing portion and the rotation stop screw member is inclined from the upper part toward the lower portion, the anchor bolt fixing portion and the rotation stop screw member can be concealed from the outside, Projections on the surface side of the cover material can be reduced.

  In this invention, the rotation stop screw member for preventing the bracket from rotating when loaded on the headboard is provided below the extension reinforcement piece on the back side of the wall panel through the extension reinforcement piece. It is preferable to be formed so as to be screwable with the base material (claim 2).

  By comprising in this way, attachment of a bracket can be strengthened by screwing a rotation stop screw member with the base material provided in the back surface side of the wall surface panel.

  In the present invention, it is preferable that a horizontal V-shaped groove for mounting the rotation set screw member is provided on the lower surface of the extension reinforcing piece.

  By comprising in this way, a rotation stop screw member can be penetrated to a horizontal V-shaped groove, and can be screwed together with the base material provided in the back surface side of the wall surface panel.

According to the first aspect of the invention, the locking leg piece provided on the cover material by moving the cover material obliquely from below toward the fixed portion of the bracket fixed to the wall panel and the extension reinforcing piece. Is engaged with the horizontal fitting groove provided on the bracket, the engaging claw piece is engaged with the engaging protrusion provided on the lower surface of the connecting portion of the bracket, and the position restricting pieces are formed on both side surfaces of the fixing portion of the bracket. The cover material can be attached by abutting.

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

  (1) According to the first and second aspects of the invention, it is possible to prevent the bracket from rotating around the anchor bolt due to the load on the headboard, so that the load bearing performance can be improved. Damage to the wall panel can be prevented.

  In addition, since the surface of the cover material covering the anchor bolt fixing portion and the rotation stop screw member is inclined from the upper part toward the lower portion, the anchor bolt fixing portion and the rotation stop screw member can be concealed from the outside, Since the protrusions on the surface side of the cover material can be reduced, it is possible to improve aesthetics and improve pedestrian safety.

  (2) According to the third aspect of the present invention, the rotation set screw member can be threaded into the base material provided on the back surface side of the wall panel through the horizontal V-shaped groove. In addition to brackets, the bracket can be easily fixed.

(3) According to the first aspect of the present invention, the cover member is moved obliquely from below toward the fixed portion of the bracket fixed to the wall panel and the extension reinforcing piece, and the locking leg provided on the cover material. The piece is fitted into the horizontal fitting groove provided on the bracket, and the locking claw piece is engaged with the locking projection provided on the lower surface of the connecting portion of the bracket. In addition to the above (1) , the cover material can be attached easily and reliably.

It is a schematic front view which shows an example of the installation state of the handrail for buildings concerning this invention. It is the front view (a) and side view (b) which show the principal part of the installation state of the said handrail for buildings. It is sectional drawing which follows the II line | wire of Fig.2 (a). It is sectional drawing (a) which shows the attachment state of the bracket in this invention, and a cover material, and the A section expanded sectional view (b) of (a). It is a disassembled perspective view which shows the bracket in this invention, a head board, and a cover material. It is a perspective view which shows the attachment state of the bracket and headboard in this invention. It is a perspective view which shows the state which attached the said cover material. It is the front view (a) of the said cover material, a rear view (b), a top view (c), and a left view (d). It is sectional drawing (a) in alignment with the II-II line | wire of FIG.8 (b), sectional drawing (b) in alignment with III-III line, and sectional drawing (c) in alignment with IV-IV line. It is the schematic front view (a) which shows the state which added the load to the handrail which concerns on this invention, and the schematic front view (b) which shows the state which added the load to the handrail without a rotation screw member. It is sectional drawing (a) which shows the state which added the load which satisfy | fills BL reference | standard to the handrail which concerns on this invention, and sectional drawing (b) which shows the state which applied the maximum load.

  Below, the handrail for buildings concerning this invention is explained in detail with reference to an accompanying drawing.

  As shown in FIGS. 1 to 3, the building handrail 1 includes a bracket 20 fixed to an anchor bolt 3 protruding from a wall panel 2, a headboard 10 supported by the bracket 20, and a bracket 20. And a cover member 30 that conceals the fixing portion of the anchor bolt 3 from the outside.

  The wall surface panel 2 is formed by attaching two plaster boards 2a and 2b having different thicknesses, and a plate-like metal base material 2c having a predetermined height is attached to the back surface side. .

  As shown in FIG. 2 to FIG. 5, the headboard 10 is attached to a core material 11 formed of an extruded shape made of an aluminum alloy having a groove having a lower portion opened in the longitudinal direction, and an outer periphery of the core material 11. It is formed with the main body 12 made of synthetic resin.

  The core material 11 is formed in a substantially rectangular cross section including a rectangular hollow portion 13 and a downward opening 14 communicating with the entire length of the hollow portion 13. In this case, the opening part 14 is formed in the intermediate part of the lower piece 15b located above the lower end of the opposing both-side pieces 15a and 15a which comprise the hollow part 13. FIG. Moreover, the circular arc-shaped part 17 is formed in the corner | angular part of the attachment piece 16 extended to the upper end and lower end of both side piece 15a, 15a. Further, the upper strip 15c constituting the hollow portion 13 is formed with a recess 18 that opens downward, that is, on the inner surface side of the hollow portion 13, and a support portion 22 of a bracket 20 described later is formed on the bottom surface of the recess 18. The tip can be brought into contact with and engaged.

  On the other hand, as shown in FIGS. 2, 3, and 5, the headboard main body 12 is formed in a substantially arc shape in cross section having an opening 12 a below. In this case, an engagement piece 12b that can engage with the attachment piece 16 of the core member 11 protrudes from the opposing edge of the opening 12a.

  The bracket 20 is formed of an extruded material made of, for example, an aluminum alloy, and as shown in FIGS. 2 to 5, a fixing portion 21 fixed to the anchor bolt 3 protruding from the wall surface panel 2, A support portion 22 that is inserted into the hollow portion 13 of the core material 11 and that can be brought into contact with and engaged with the bottom surface of the recess 18, and a connecting portion that connects the upper end portion of the fixing portion 21 and the lower end portion of the support portion 22. 23. In this case, the connecting portion 23 includes a horizontal portion 23a that is bent orthogonally from the upper end portion of the fixed portion 21, a vertical portion 23b that hangs down from the lower end portion of the support portion 22, and a front end of the horizontal portion 23a and a lower end of the vertical portion 23b. It is formed in the elbow shape which consists of the arc-shaped bending part 23c which continues to. Further, the horizontal portion 23a is formed to have the same thickness as the fixed portion 21, the arc-shaped bent portion 23c is formed to gradually decrease in thickness from the horizontal portion 23a to the vertical portion 23b, and the vertical portion 23b is gradually increased upward. The wall thickness is thin. As a result, the cost is reduced by reducing the thickness of the portion having less influence on strength.

  In addition, a thin plate-like extension reinforcing piece 25 is formed at the lower end portion of the fixed portion 21 and extends downward along the surface of the wall surface panel 2 via a convex arc-shaped step portion 24. In this case, the thickness of the fixed portion 21 is 7 mm, whereas the thickness of the extension reinforcing piece 25 is set to 2 mm. In this way, by extending the thin plate-like extension reinforcing piece 25 to the lower end portion of the fixed portion 21 via the stepped portion 24, the extension reinforcing piece 25 can be deformed when an excessive load is applied to the bracket 20. .

  In addition, a horizontal V-shaped groove 26 for mounting a tapping screw 6 which is a rotation-preventing screw member described later is provided on the lower surface of the extension reinforcing piece 25, and the bracket 20 is rotated when loaded on the headboard 10. A tapping screw 6 for blocking is formed so as to be able to screw with a base material 2 c provided on the back surface side of the wall surface panel 2 through the extension reinforcing piece 25 through the horizontal V-shaped groove 26.

  The support portion 22 is formed in a rectangular shape having a concave groove 22a at the upper end, and an arc-shaped concave groove 22b is formed in one side surface of the support portion 22 in the longitudinal direction. In this way, by providing the concave groove 22a at the upper end and the arc-shaped concave groove 22b on one side surface, the thickness of the cross-sectional portion having little influence on the strength is reduced, thereby facilitating the mounting of the fixing screw 7 described later. ing. Further, the support portion side portion of the connecting portion 23 is formed thinner than the support portion 22.

  The support portion 22 is inserted into the hollow portion 13 through the opening portion 14 provided in the core 11 of the headboard 10 and the opening portion 12a provided in the headboard main body 12, and the upper end is in contact with the bottom portion of the concave strip 18. In this state, the support portion 22 and the core material 11 are connected by screwing the fixing screw 7 penetrating the one side piece 15a into the support portion 22 and the other side piece 15a.

  The bracket 20 formed as described above is fixed to the wall surface panel 2 by screwing the nut 5 through the washer 4 to the protruding portion of the anchor bolt 3 that passes through the through hole 21 a provided in the fixing portion 21. Is done.

  The cover material 30 is formed of a synthetic resin member, covers the protruding portion of the anchor bolt 3 that is an anchor bolt fixing portion, the screwed portion of the nut 5, and the tapping screw 6, and the surface of the cover material 30. 30a is inclined in a concave shape from the upper part to the lower part. In this case, the upper portion of the cover member 30 in a state of being attached to the bracket 20 is located below the horizontal portion 23a of the connecting portion 23, and the arcuate curved surface of the arc-shaped bent portion 23c of the connecting portion 23 The step between the surface 30a of the cover member 30 and the concave curved surface is reduced. In addition, the inclination provided in the surface 30a of the cover material 30 does not necessarily need to be a concave shape, and may be a straight shape.

  Further, the back surface of the cover member 30 is in contact with the locking claw pieces 31 that engage with the locking projections 27 provided on the lower surface of the horizontal portion of the connecting portion 23 of the bracket 20 and the both side surfaces of the fixing portion 21 of the bracket 20. A pair of position restricting pieces 32 that are in contact with each other, and a locking leg piece 33 that is fitted into a horizontal fitting groove 28 provided in the fixing portion 21 of the bracket 20 are provided.

  In this case, as shown in FIG. 4B, the locking protrusion 27 includes a vertical locking surface 27a positioned on the fixed portion 21 side of the base end of the horizontal portion 23a and a horizontal portion from the lower end of the vertical locking surface 27a. It is formed in a triangle formed by an inclined surface 27b extending toward the tip end side of 23a. On the other hand, a triangular locking claw portion 31 b having a vertical surface 31 a that engages with the vertical locking surface 27 a is formed at the tip of the locking claw piece 31.

  Further, on the upper wall of the horizontal fitting groove 28, an expanding inclined surface 28 a that expands toward the opening side is formed so that the cover member 30 can be attached from obliquely below. Thus, when the cover member 30 is attached to the bracket 20, the cover member 30 is moved obliquely from below to the fixing portion 21 side of the bracket 20 to fit the locking leg piece 33 into the horizontal fitting groove 28. The cover member 30 can be easily attached.

  In the state where the cover member 30 is attached, a gap 40 is provided between the lower end edge portion 34 of the cover member 30 and the lower end portion of the extended reinforcing piece 25.

  Next, the construction procedure of the handrail 1 configured as described above will be described. First, at the construction site, the dimensions of the mounting position of the bracket 20 are measured, and the anchor bolt 3 is attached to the wall surface panel 2 with a predetermined interval (span). In this case, the plate nut 3a is attached to the back surface of the wall surface panel 2, and the anchor bolt 3 is screwed onto the plate nut 3a (see FIG. 3).

  Next, the bracket 20 is attached to the anchor bolt 3 protruding to the wall surface panel 2 through the through hole 21a provided in the fixing portion 21, and the nut 5 is screwed to the anchor bolt 3 via the washer 4 to 20 is fixed.

  Next, the tapping screw 6 is driven into a horizontal V-shaped groove 26 provided at the lower part of the extension reinforcing piece 25, and the tapping screw 6 is screwed to the base material 2 c on the back surface side of the wall surface panel 2.

  Next, the support portion 22 of the bracket 20 is inserted into the hollow portion 13 through the opening portion 14 of the core material 11, and the concave groove 22 a at the tip of the support portion 22 is formed on the recess 18 provided in the core material 11. The fixing screw 7 penetrating the one side piece 15a is screwed into the support portion 22 and the other side piece 15a while being in contact with the bottom surface, and the support portion 22 and the core material 11 are connected. Thus, after connecting the support part 22 and the core material 11, the head body 12 is attached to the outer peripheral surface of the core material 11.

  Thereafter, the cover member 30 is moved obliquely from below to the fixing portion 21 side of the bracket 20 to fit the locking leg piece 33 into the horizontal fitting groove 28 and the locking claw piece 31 is connected to the connecting portion 23 of the bracket 20. The position restricting piece 32 is brought into contact with both side surfaces of the fixing portion 21 by engaging with a locking projection 27 provided at the lower portion of the horizontal portion 23a. Thereby, the cover member 30 hides the anchor bolt fixing portion of the bracket 20, that is, the screwed portion of the anchor bolt 3 and the nut 5 and the head of the tapping screw 6 from the outside.

  According to the handrail 1 of the embodiment configured as described above, it is possible to prevent the bracket 20 from rotating around the anchor bolt 3 due to the load on the headboard 10, thereby improving the load bearing performance. In addition, the wall panel 2 can be prevented from being damaged.

  Further, the anchor bolt fixing portion {anchor bolt 3 and nut 5} and the surface of the cover material 30 covering the tapping screw 6 are inclined from the upper part to the lower part, so that the anchor bolt fixing part {anchor bolt 3 and nut 5 } And the tapping screw 6 can be concealed from the outside, and the protrusions on the surface side of the cover member 30 can be reduced, so that it is possible to improve aesthetics and improve the safety of pedestrians.

  Moreover, since the tapping screw 6 can penetrate the horizontal V-shaped groove 26 and can be screwed into the base material 2c provided on the back side of the wall surface panel 2, the bracket 20 can be easily fixed.

  Further, the cover member 30 is moved obliquely downward toward the fixing portion 21 and the extension reinforcing piece 25 of the bracket 20 fixed to the wall surface panel 2, and the locking leg pieces 33 provided on the cover member 30 are attached to the bracket 20. The engaging claw piece 31 is engaged with the engaging protrusion 27 provided on the lower surface of the connecting portion of the bracket 20, and the position restricting piece 32 is fixed to the fixing portion 21 of the bracket 20. Since the cover member 30 can be adhered to the both side surfaces of the cover member, the cover member can be easily and reliably attached.

  Furthermore, since the cover material 30 can be attached to the bracket 20 with a gap 40 between the lower end edge portion 34 of the cover material 30 and the lower end portion of the extension reinforcing piece 25, the cover material 30 can be easily attached. Can be.

  The handrail 1 according to the present invention can also be installed on a wall panel made of hard gypsum board. In this case, the anchor bolt 3 and the nut 5 are firmly fixed without driving the tapping screw 6 into the extension reinforcing piece 25. The bracket 20 can be given strength by screwing (fastening).

<Example 1>
In order to examine the strength of the handrail 1 of the embodiment configured as described above (see FIG. 10A) and the conventional handrail 1A having no extension reinforcing piece 25 {see FIG. 10B}, the following is performed. The strength test was conducted under various conditions.

Test conditions. Core material 11: extruded aluminum material
. Kasagi body 12: Semi-rigid vinyl chloride two-layer molding material. Wall panel 2 {plate thickness of gypsum board 2a: 12.5 mm, plate thickness of gypsum board 2b: 9.5 mm, plate thickness of base material 2c: 0.8 mm}
. Span: 910mm
. Nut 5: M8
As a result of performing a strength test in which the load W satisfying the BL standard is applied to the central portion of the headboard 10 of the handrail 1, 1A, in the handrail 1 of the embodiment shown in FIG. 10A, the deflection with a load of 30 kgf is 9.1 mm or less. Met. In addition, a test result with a maximum load of 120 kgf or more was obtained.

  On the other hand, in the conventional handrail 1A shown in FIG. 10B, when the same strength test was performed, the bracket 20A rotated around the anchor bolt 3 and the lower end of the bracket 20A Sinked on the surface.

<Example 2>
Next, when the deformation of the bracket 20 was examined by adding the load W satisfying the BL standard and the maximum load Wmax to the handrail 1 of the embodiment, the bracket 20 was not deformed at the load W satisfying the BL standard {FIG. )reference}. On the other hand, at the maximum load Wmax, since the rotation is prevented by the tapping screw 6, the extension reinforcing piece 25 is deformed in the direction away from the wall panel 2 by the force (stress) by which the bracket 20 rotates with the anchor bolt 3 as a base point. The wall panel 2 was slightly deformed, but the surface of the wall panel 2 was not damaged {see FIG. 11 (b)}.

2 Wall panel 2c Base material 3 Anchor bolt 5 Nut 6 Tapping screw (rotating set screw member)
DESCRIPTION OF SYMBOLS 10 Coping 20 Bracket 21 Fixing part 22 Support part 23 Connection part 24 Step part 25 Extension reinforcement piece 26 Horizontal V-shaped groove 27 Locking protrusion 28 Horizontal fitting groove 28a Widening inclined surface 30 Cover material 31 Locking claw piece 32 Position regulation Piece 33 locking leg piece

Claims (3)

A bracket fixed to an anchor bolt protruding from a wall panel, a head supported by the bracket, and a protruding portion of the anchor bolt which is an anchor bolt fixing portion for fixing the anchor bolt of the bracket is concealed from the outside. A building handrail comprising:
The bracket includes a fixing portion fixed to the anchor bolt, a support portion of the headboard, a connecting portion that connects an upper end portion of the fixing portion and a lower end portion of the supporting portion,
A thin plate-like extension reinforcing piece is formed on the lower end portion of the fixed portion, which extends downward along the surface of the wall panel via a stepped portion, to which a rotation set screw member can be attached,
The cover material covers the anchor bolt fixing portion and the rotation-preventing screw member, and the surface is inclined from the upper part to the lower part , and the back surface of the cover material is provided on the lower surface of the connecting part of the bracket. A locking claw piece that engages with the locking projection, a position regulating piece that contacts both side surfaces of the fixing portion of the bracket, and a locking that is fitted into a horizontal fitting groove provided in the fixing portion of the bracket. Leg pieces are provided, and an inclined surface is formed on the upper wall of the horizontal fitting groove so as to expand toward the opening side .
A handrail for buildings. In the handrail for buildings according to claim 1,
Under the extension reinforcement piece, the rotation-preventing screw member that prevents the bracket from rotating when loaded onto the headboard penetrates the extension reinforcement piece and is screwed with a base material provided on the back side of the wall panel. A handrail for buildings, which is formed to be compatible. In the building handrail according to claim 1 or 2,
A handrail for a building, characterized in that a horizontal V-shaped groove for mounting the rotation set screw member is provided on a lower surface of the extension reinforcing piece.

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