JP7093551B2 - Flexible connection kit for handrails - Google Patents

Description

The present invention relates to a handrail universal connection kit for connecting rod-shaped or tubular handrail members at a variable angle.

For example, when installing a handrail along a bent portion of a wall surface such as a staircase, it is necessary to connect the linear handrail members while changing the direction at the bent portion. Freely connecting tools for handrails used in such places are disclosed in, for example, Patent Documents 1 to 3.

The basic structure of the freely connecting tool for handrails disclosed in these documents is a connecting member provided with hemispherical concave surfaces on both sides, and a hemispherical shell-shaped convex portion fitted into the concave surface at one end. A pair of movable members provided are provided, and a guide hole is formed in the convex surface portion of each movable member, and the shaft member inserted through the guide hole is coupled to the vicinity of the center of the concave surface portion of the connecting member. As a result, the movable member and the connecting member are configured so that the connecting angle between the movable member and the connecting member can be changed within a certain range while the convex and concave portions of each other are brought into spherical contact with each other.

A cylindrical handrail joint is provided at the other end of each movable member, and a rod-shaped or tubular handrail member is attached to the handrail joint and fastened with a screw or the like.

Japanese Unexamined Patent Publication No. 11-6267 Japanese Unexamined Patent Publication No. 2001-254996 Jitsukaihei 5-35940 Gazette

In the structure of the conventional universal connecting tool for handrails, the guide hole formed in the convex surface portion is formed as an elongated hole (Patent Documents 1 and 2) or a cross hole (Patent Document 3), so that the movable member with respect to the connecting member is formed. The movable direction of is limited to a two-dimensional (planar) range in which the shaft member can move in the elongated hole or the cross hole. Moreover, the movable range (movable angle) of the movable member is defined by the length of the guide hole, but it is not preferable in terms of design if the guide hole is exposed from the concave portion of the connecting member when the movable member is moved. Since there is a limit to the length of the movable member, the maximum movable angle of the movable member is limited to 45 °. Therefore, the connection angle of the handrail member with respect to the axis of the connecting member often exceeds 45 °. For example, in a rotating staircase, the above-mentioned conventional connecting tool in which the maximum movable angle of the movable member is limited to 45 ° cannot be used. There was an inconvenience. For this reason, conventionally, it has been dealt with by preparing a plurality of types of connecting members having an angle in advance so that the connecting angle of the handrail member exceeds 45 °, but this causes a loss in manufacturing cost. At the same time, shipping management becomes complicated, and there is a problem that the workability is inferior because it is necessary to select the connecting members even at the construction site.

The present invention has been made in view of such circumstances, and it is not necessary to prepare a plurality of types of connecting members having different angles. With one type of connecting member, the connecting angle of the handrail member with respect to the axis of the connecting member can be set. It is intended to provide a universal connection kit for handrails that can be used even when the temperature exceeds 45 °.

In order to achieve the above-mentioned object, the universal coupling kit for handrails of the present invention includes a flexible coupling tool and at least one angle adjusting adapter.

The universal connector is provided with a connecting member having hemispherical concave surfaces on both sides and a handrail joint that can be fitted to the end of the handrail member at one end, while fitting into the concave portion at the other end. A pair of movable members provided with a convex surface portion are provided, and a guide hole is formed in the convex surface portion of each of the movable members, and the shaft member inserted through the guide hole is the center of the concave surface portion of the connecting member. By being coupled in the vicinity, the connecting member and the movable member can change the connecting angle between the connecting member and the movable member within a certain range while bringing the concave surface portion and the convex surface portion into spherical contact with each other.

On the other hand, the angle adjustment adapter is provided with a detachable fitting portion at one end of the handrail joint portion of the movable member, while the other end is provided with a handrail receiving portion for receiving the end portion of the handrail member, and the fitting portion of the fitting portion. The opening angle formed by the opening surface orthogonal to the axis and the opening surface orthogonal to the axis of the handrail receiving portion is set to a predetermined angle.

Due to this specific matter, even if the connection angle of the handrail member with respect to the axis of the connection member exceeds the connectable angle of the universal connector alone, the angle adjustment adapter can be attached to the movable member of the universal connector. It becomes possible.

In the universally connecting kit for handrails of the present invention configured as described above, it is not necessary to prepare a plurality of types of connecting members having different angles. It is possible to provide a universal connection kit for handrails that can be used even when the connection angle exceeds 45 °.

It is a top view which shows the whole structure of the universal connection kit for a handrail which concerns on embodiment of this invention. It is sectional drawing which follows the line II-II in FIG. It is a perspective view of the universal connection tool of the universal connection kit for a handrail. It is a rear view of the free connection kit for a handrail. It is an exploded perspective view which shows the structure of a bracket. It is a perspective view of the angle adjustment adapter. It is a top view of the angle adjustment adapter. It is an exploded perspective view which shows the connection state of a handrail free connection kit and a handrail member. It is a perspective view which shows the example which installed the handrail on the rotating stairs using the universal connection kit for a handrail. 9 is an enlarged perspective view of a portion A and a portion B in FIG. 9. It is a top view of the installation example shown in FIG. It is a perspective view which shows the universal connection kit for a handrail which attached the wall-mounting adapter of another form.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 12 show a universally connected kit for a handrail according to an embodiment of the present invention. As shown in FIGS. 9 to 11, the illustrated universal handrail connection kit 1 is used by being attached to the protruding corner side of the staircase when the handrail is installed on the wall surface of the rotating staircase.

As shown in FIGS. 1, 2, 4, 8 and 12, the free connection kit 1 for handrails includes a free connection tool 2 and at least one angle adjustment adapter 3, and the free connection tool 2 includes a free connection tool 2. It includes a connecting member 4, a pair of movable members 5, 5, and a bracket 6. Hereinafter, each member will be described in detail.

As shown in FIG. 1, the connecting member 4 is an elbow having an angle α formed by the opening surfaces 41 on both sides thereof at 90 °, and both sides thereof have a hemispherical shape as shown in FIG. A concave surface portion 42 is provided. The concave surface portion 42 corresponds to the top surface of the pedestal portion 44 formed so as to rise from the bottom portion of the concave portion 43 provided on both sides of the connecting member 4 toward the opening surface 41, and includes the edge portion 41a of the opening surface 41. It is located in the center of the spherical virtual curved surface C. A female screw hole 45 is formed in the central portion of the pedestal portion 44, and as shown in FIG. 3, the female screw hole 45 is engaged with the guide hole 55 of the movable member 5 described later at the peripheral portion of the opening of the female screw hole 45. A rectangular or polygonal locking convex portion 46 having parallel opposite sides for defining a movable region of the movable member 5 is projected (FIG. 3 shows an example of a rectangular shape). Further, a lubricating plate 47 for facilitating sliding with the movable member 5 is arranged on the concave surface portion 42 by being fitted on the locking convex portion 46. The material of the lubricating plate 47 may be any material sufficient for smooth sliding of the movable member 5, and examples thereof include polyacetal resin, silicon resin, and nylon resin.

The pair of movable members 5 and 5 are both the same member, each of which is provided with a substantially cylindrical handrail joint 51 that can be fitted to the end of the handrail member H at one end and a connecting member 4 at the other end. A convex surface portion 52 connected to the concave surface portion 42 of the above is provided.

In the exemplary embodiment, the cross-sectional shape of the handrail member H is circular, and the handrail joint portion 51 is also formed in a substantially cylindrical shape in accordance with this. As shown in FIG. 8, the handrail joint portion 51 and the handrail member H are fixed by set screws 53 arranged at two or three locations on the side surface of the handrail joint portion 51. In the exemplary embodiment, a round plate wood screw is used as the set screw 53, and is fastened to two set screw holes 54 formed facing the side surface of the handrail joint portion 51.

As shown in FIG. 2, the convex surface portion 52 is a hemispherical shell-shaped portion having a substantially constant wall thickness, and its outer surface forms a hemispherical convex surface having substantially the same diameter as the concave surface portion 42 of the connecting member 4, which is sufficient. It is finished smoothly. Further, the inner surface of the convex surface portion 52 is concentric with the outer surface and forms a hemispherical concave surface having a slightly smaller diameter. The convex surface portion 52 and the handrail joint portion 51 are integrally formed so that their axes are aligned with each other.

An elongated guide hole 55 is formed in the convex surface portion 52, and the above-mentioned locking convex portion 46 is engaged with the guide hole 55. The guide hole 55 is asymmetrical including the center of the convex surface portion 52 (the center of the circle when the hemispherical convex surface is viewed from the front / the portion protruding toward the tip in the axial direction of the movable member 5), that is, long from the center to one side. It is formed so as to extend shortly to the other side. Here, when the locking convex portion 46 in the concave surface portion 42 of the connecting member 4 is rectangular, as shown in FIG. 3, both side edges of the guide hole 55 are one of two pairs of opposite sides of the locking convex portion 46. Since it comes into sliding contact with a set of opposite sides, the movable area of the movable member 5 can be changed by 90 ° around the female screw hole 45. That is, in the state shown in FIG. 2, since both side edges of the guide hole 55 are in sliding contact with the opposite side of the locking convex portion 46 parallel to the paper surface, the movable member 5 rotates in the plane parallel to the paper surface. When both side edges of the guide hole 55 are brought into sliding contact with the opposite side of the locking convex portion 46 orthogonal to the paper surface, the movable member 5 rotates in the plane orthogonal to the paper surface. If the shape of the locking convex portion 46 is a polygon other than a rectangle, for example, a hexagon or a dodecagon whose opposite sides are parallel, the degree of change in the movable region of the movable member 5 can be set more finely.

As shown in FIG. 2, the movable member 5 as described above is made of, for example, a hexagon socket head cap screw in a state where the guide hole 55 is engaged with the locking convex portion 46 of the concave surface portion 42 of the connecting member 4. The shaft member 7 is inserted into the guide hole 55 of the convex surface portion 52 from the inside of the movable member 5 via the spring washer 71 and the spherical washer 72, and the leg tip thereof is a female screw hole 45 formed in the pedestal portion 44 of the connecting member 4. By being screwed into, it is slidably fastened to the concave surface portion 42 of the connecting member 4 in an arc shape. The attachment / detachment of the shaft member 7 and the adjustment of the tightening adjustment are performed by inserting a tool such as a hexagon wrench from the inner surface side of the convex surface portion 52, that is, the handrail joint portion 51 side. Here, when the handrail member H is joined to the handrail joint portion 51, the movable member 5 is positioned in a predetermined direction by tightening the shaft member 7, but in this state, the handrail member H is connected to the handrail joint portion 51. By joining the one end and then holding the other end of the handrail member H to bring the handrail member H to the final posture, the movable member 5 is slid by the principle of the lever and its orientation is finally determined. Will be done. At this time, as described above, since the lubricating plate 47 for smoothing the sliding with the movable member 5 is arranged on the concave surface portion 42, even if the tightening by the shaft member 7 is strong, the movable member is thereby. The sliding of 5 is not hindered. In FIG. 3, the shaft member 7 is not shown.

The bracket 6 is for supporting and fixing the connecting member 4 provided with the movable members 5 and 5 on both sides to the wall surface W. As shown in FIG. 5, the bracket 6 is bent at a substantially right angle, and the tip of the bracket 6 is fixed to the lower surface of the connecting member 4 with a screw 62 to which a spring washer 67 is attached, and the arm rod 61. It is composed of a removable decorative cover 64 that can open and close the opening 63 on the outer peripheral side of the arm, and a wall-mounted adapter 65 that is detachably provided at the base end of the arm rod 61.

In the example, the wall mounting adapter 65 is mounted on the protruding corner E of the wall surface W on the inner peripheral side of the rotating staircase chamber, as shown in FIGS. 9 to 11, and is therefore shown in FIGS. 1 and 3. As described above, the mounting surface 65a to the wall surface W is recessed at a substantially right angle. On the contrary, when mounting on the inside corner of the wall surface, as shown in FIG. 12, a wall mounting adapter 65 having the mounting surface 65a protruding outward is used. Further, the opposite side of the mounting surface 65a of the wall mounting adapter 65 is a fitting portion 65b into which the base end portion of the arm rod 61 is fitted.

As shown in FIG. 4, the wall surface mounting adapter 65 as described above is fixed to the wall surface W by fixing screws (not shown) via screw insertion holes 65c formed at four locations on the mounting surface 65a. Then, the base end portion of the arm rod 61 is fitted into the fitting portion 65b of the wall surface mounting adapter 65 fixed to the wall surface W, and as shown in FIG. 5, three screws 66 are inserted from the outer peripheral side opening 63 side. By screwing in, the wall mounting adapter 65 and the arm rod 61 are united and fixed.

As shown in FIGS. 6 and 7, the angle adjustment adapter 3 is provided with a fitting portion 31 that can be attached to and detached from the handrail joint portion 51 of the movable member 5 at one end, while the end portion of the handrail member H is received at the other end. A handrail receiving portion 32 is provided. The fitting portion 31 is formed in a substantially cylindrical shape, and its outer diameter is substantially equal to the inner diameter of the handrail joint portion 51 of the movable member 5. Further, the peripheral wall of the fitting portion 31 is provided with female screw holes 31a at two locations, and is screwed from the outside of the handrail joint portion 51 in a state of being fitted in the handrail joint portion 51 of the movable member 5. By screwing the connecting screw 36 to be inserted into these female screw holes 31a, the angle adjusting adapter 3 is connected and integrated with the handrail joint portion 51 of the movable member 5. The handrail receiving portion 32 is formed in the same shape as the handrail joint portion 51 of the movable member 5, and screw holes 33 are formed in a plurality of locations on the peripheral surface thereof. The screw hole 33 has the same shape as the set screw hole 54 provided in the handrail joint portion 51 of the movable member 5, and the set screw 53 for fixing the handrail member H can be shared. ing.

Further, as shown in FIG. 7, the opening angle formed by the opening surface 34 orthogonal to the axial center 31a of the fitting portion 31 of the angle adjusting adapter 3 and the opening surface 35 orthogonal to the axial center 32a of the handrail receiving portion 32. β is set to 45 ° in the case of this example. As a result, when the maximum movable angle of the movable member 5 is also set to 45 °, even if the connecting angle of the handrail member H with respect to the axial center 4a (see FIG. 2) of the connecting member 4 becomes 90 °, it can be dealt with. Is possible. The maximum movable angle of the movable member 5 and the opening angle β of the angle adjusting adapter 3 are not limited to the above examples, but when the maximum movable angle of the movable member 5 exceeds 45 °, the end of the guide hole 55 is used. Since the portion is exposed from the edge portion 41a of the opening surface 41 of the connecting member 4, the temperature is set to 45 ° or less.

The angle adjusting adapter 3 as described above is made of the same material as the connecting member 4 and the movable member 5, and when attached to the movable member 5, the appearance is integrated with the movable member 5. The angle adjustment adapter 3 may be attached to both movable members 5 or only to one of the movable members 5 depending on the connection angle of the handrail member H.

8 to 11 show an example in which the handrail member H is attached to the wall surface W on the inner peripheral side of the rotating staircase chamber by using the handrail universal connection kit 1 as described above. FIG. 8 is an exploded perspective view showing a connection state between the handrail universal connection kit 1 and the handrail member H, and FIG. 9 shows an example in which the handrail member H is installed on a rotating staircase using the handrail universal connection kit 1. A perspective view, FIG. 10 is an enlarged perspective view of a portion A and a portion B in FIG. 9, and FIG. 11 is a plan view of an installation example shown in FIG.

In this example, the handrail universal connection kit 1 is attached to the protruding corner, and the end of the handrail member H is fitted to the handrail joint 51 of one of the pair of movable members 5 and 5, and the other. By fitting the other handrail member H to the angle adjusting adapter 3 attached to the handrail joint portion 51 of the movable member 5, the handrail member is arranged along the rotating stairs.

In the above embodiment, the connecting member 4 is an elbow having an angle α formed by the opening surfaces 41 on both sides thereof at 90 °, but the connection member 4 is not limited to this, and the connecting member 4 is a straight having parallel opening surfaces on both sides. May be done. Further, the shape of the handrail member H is not limited to the so-called round bar or pipe material having a circular cross section, and may be an ellipse or another shape. In that case, the shape of the handrail joint portion 51 of the movable member 5 and the shapes of the fitting portion 31 and the handrail receiving portion 32 of the angle adjusting adapter 3 are also shaped to match the shape of the handrail member H, respectively. Further, in the above embodiment, the bracket 6 corresponds to the inside corner and the outside corner, but may correspond to a smooth wall surface. Further, in the above embodiment, the universal connecting tool 2 is provided with the bracket 6, but the bracket 6 is not essential and may be composed of the connecting member 4 and the pair of movable members 5, 5. In that case, for example, the connecting portion 4 is placed and fixed on the upper end of a support column erected on the floor surface, and the universal connecting tool 2 is directly attached to an arbitrary support member via the connecting member 4. May be.

1 Flexible connection kit for handrail 2 Flexible connection tool 3 Angle adjustment adapter 31 Fitting part 32 Handrail receiving part 34 Opening surface of fitting part 35 Opening surface of handrail receiving part 4 Connecting member 42 Concave surface 5 Movable member 51 Handrail joint 52 Convex surface β Opening surface opening angle

Claims (1)

A connecting member provided with hemispherical concave surfaces on both sides and a handrail joint portion that can be fitted to the end portion of the handrail member are provided at one end, while a convex surface portion that fits into the concave surface portion is provided at the other end. A pair of movable members are provided, and a guide hole is formed in the convex surface portion of each of the movable members, and the shaft member inserted into the guide hole is coupled to the vicinity of the center of the concave surface portion of the connecting member. Thereby, the universal connecting member capable of changing the connecting angle between the connecting member and the movable member within a certain range while bringing the concave surface portion and the convex surface portion into spherical contact with each other.
A detachable fitting portion is provided at one end of the handrail joint portion of the movable member, while a handrail receiving portion that receives the end portion of the handrail member is provided at the other end, and an opening surface orthogonal to the axis of the fitting portion. And at least one angle adjustment adapter in which the opening angle formed by the opening surface orthogonal to the axis of the handrail receiving portion is set to a predetermined angle.
A free connection kit for handrails, which is characterized by being equipped with.

Images