JP4785792B2 - Handrail connection member and handrail connection structure - Google Patents

Description

  The present invention relates to a handrail connection member that connects a handrail and a joint, and a handrail connection structure including the handrail connection member.

  Conventionally, for example, as shown in Patent Document 1, when a plurality of handrails are connected in series along a wall surface such as a staircase or a corridor, a connecting joint for connecting the ends of two handrails, As shown in Patent Document 2, it is known to use a joint (end bracket) for attaching an end portion of a handrail to a wall surface. The handrail attachment portion of these joints is formed in a cylindrical shape or an annular shape so that ends of handrails having a circular cross section generally used indoors and outdoors in buildings can be fitted.

By the way, in recent years, as shown in Patent Document 3, for example, a handrail having an irregular cross section different from a circular shape has been proposed in consideration of ease of gripping.
Japanese Patent Laid-Open No. 11-93367 JP 2001-32491 A JP 2004-263409 A

  However, joints such as Patent Document 1 and Patent Document 2 are formed so that a handrail mounting portion has a circular cross section in accordance with a general circular handrail. Therefore, when using a handrail with an irregular cross section as in Patent Document 3, it is impossible to fit these joints and the end of the handrail, or even if the handrail can be inserted into the mounting portion. However, since there is a gap between the attachment portion and the handrail end, there is a problem that the appearance is not good.

  Therefore, it is conceivable to mold the handrail mounting part of the joint into a shape that matches the handrail of the irregular cross section, but it is necessary to prepare various types of joints according to the handrail with different shapes depending on the installation location and application There arises a problem that the cost of the joint is increased and the production efficiency is lowered.

  The present invention has been made in view of such points, and the object of the present invention is to improve the connection structure between the handrail and the joint so that the cross-sectional shape of the handrail mounting portion is the same joint. Even if it exists, it exists in enabling it to connect the handrail of a some odd-shaped cross section.

  In order to achieve the above object, in the handrail connection member and the handrail connection structure according to the present invention, by using a handrail connection member capable of connecting a handrail having a different cross section from a circular shape and a joint, Regardless of the cross-sectional shape of the handrail, a common handrail joint with a circular cross section can be used.

Specifically, the connection member for a handrail according to the first invention is a connection member for a handrail provided between the handrail and a joint that connects the handrails or the handrails to the mounting surface. A cylindrical joint-side fitting portion fitted into the joint is disposed at one end side in the axial direction, and a cylindrical handrail-side fitting portion fitted into the handrail is disposed at the other end side in the axial direction. Each of the joint-side fitting portion and the handrail-side fitting portion has different cross-sectional shapes. Furthermore, on the side surface of the joint-side fitting portion, a pair of first screw insertion portions located at positions facing each other in the diametric direction, and a straight line connecting the centers of the first screw insertion portions when viewed in the axial direction There is provided a pair of second screw insertion portions that are spread at both sides in the circumferential direction with an angle θ as a center at a position on an orthogonal straight line, and the angle θ is tan θ ≧ 230/150 (0 <θ ≦ π / 2). It is in the range.

According to the above configuration, by forming the handrail-side fitting portion of the handrail connection member in accordance with the shape of the handrail having an irregular cross section different from the circular shape, the cylindrical joint-side fitting of the handrail connection member is performed. A common joint that connects the handrails or the handrails to the mounting surface is fitted to the part, and a handrail with an irregular cross section is fitted to the handrail side fitting part, and the handrails having different cross-sectional shapes And the joint are connected .

By the way, as for the common joint which connects handrails, a handrail attachment part is circular cross-section, and a pair of screw hole is provided in the position which mutually faces the diameter direction on the side surface. And the joint side fitting part of the handrail connection member is inserted into this joint, the screw insertion part of the joint side fitting part and the screw hole of the joint are aligned, and the joint and the handrail connection member are To fix. When the handrail has an irregular cross section different from a circular shape and the orientation at the time of placement is determined, the orientation of the handrail connecting member to be fitted to the handrail is determined, so a pair of screws is attached to the handrail connecting member. It may not be possible to align the joint with the screw hole just by providing the insertion portion.

In the first aspect of the invention, for example, a pair of first screw insertion portions are arranged so that a straight line connecting the centers thereof horizontally extends in accordance with the handrail, and a corner portion of a corridor, a staircase and a landing, etc. A case where a joint is used at the boundary between the two will be described. In this case, when the pair of screw holes of the joint is positioned up and down, the center of the second screw insertion portion of the handrail side fitting portion is aligned with the screw hole of the joint, and the screw holes of the joint are positioned on the left and right. In some cases, the first screw insertion portion and the screw hole of the joint are aligned, so that a screw is inserted into the screw insertion portion and the screw hole.

  On the other hand, when a joint is used at the boundary between a continuous corridor and a staircase so as to bend at a right angle, a straight line connecting the centers of the pair of screw holes of the joint is inclined according to the inclination of the staircase. The second screw insertion part of the handrail side fitting part spreads from the center to both sides in the circumferential direction by an angle θ, and this angle θ is “the rise of the house stairs is 230 mm or less, The tread surface can be 150 mm or more. ” That is, since the second screw insertion portion is provided at an angle θ≈56.9 degrees (tan θ = 230/150) or more, which is the maximum inclination angle allowed by the Building Standard Law in the staircase of a house, Regardless of the inclination, the second screw insertion portion and the screw hole of the joint can be aligned.

A handrail connection member according to a second aspect of the present invention is the first handrail connection member, wherein the handrail is attached to a boundary portion between the joint-side fitting portion and the handrail-side fitting portion. A third screw insertion portion is provided at a position where a screw for fixing the joint to be connected to the handrail is inserted in the axial direction.

  According to the above configuration, when attaching the joint connecting the handrail to the mounting surface to the handrail, first, the handrail side fitting portion is fitted and fixed to the end portion of the handrail, and the end bracket side is fixed. Insert a screw in the axial direction of the handrail and fix it. Since the third screw insertion portion is provided at the position where the screw is inserted at the boundary portion of the handrail connection member, the end bracket is handrailed by inserting the screw from the third screw insertion portion. Attached to.

A handrail connection structure according to a third invention is such that a joint is externally fitted to a joint side fitting portion of the first or second handrail connection member, and the handrail side fitting of the handrail connection member is performed. An end portion of a handrail having a cross section different from a circular shape is fitted into the joint portion.

  According to the above configuration, a general joint is externally fitted to the cylindrical joint-side fitting portion, and an end portion of the handrail having an irregular cross section is fitted to the handrail-side fitting portion. A handrail is connected.

A handrail connection structure according to a fourth aspect of the present invention is the handrail connection structure according to the third aspect of the present invention, wherein a fixing auxiliary member is provided inside the joint-side fitting portion of the handrail connection member. .

  According to the above configuration, even when it is difficult to screw the screw into the joint and the connection member for the handrail, the backlash is suppressed by providing the fixing auxiliary member inside the joint side fitting portion. The

According to the first invention, since the handrail and the joint can be connected via the handrail connection member formed in accordance with the cross-sectional shape of the handrail, regardless of the cross-sectional shape of the handrail, A common handrail joint with a circular cross section can be used . Moreover, even when connecting the handrail whose orientation of the arrangement is determined by providing the first screw insertion portion and the second screw insertion portion in accordance with the maximum inclination of the staircase in the joint side fitting portion, A screw can be inserted into either the first screw insertion portion or the second screw insertion portion, and the joint and the handrail connection member can be fixed.

According to the second aspect, when the joint for connecting the handrail to the attachment surface is attached to the handrail, the third insertion portion is provided at a position where the screw at the boundary portion of the handrail connection member is inserted. Therefore, a screw can be inserted into the third insertion portion, and the joint and the handrail can be fixed.

According to the third invention, since the handrail and the joint can be connected via the handrail connecting member formed in accordance with the cross-sectional shape of the handrail, regardless of the cross-sectional shape of the handrail, A common handrail joint with a circular cross section can be used. Therefore, it is not necessary to prepare many types of joints according to the shape of the handrail.

According to the fourth aspect of the present invention, by providing the fixing auxiliary member, rattling between the joint and the handrail connecting member is suppressed, and these can be firmly fixed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Embodiment 1 of the Invention
(Use condition 1)
1 and 2 show a handrail connection structure according to Embodiment 1 of the present invention, where 1 is a handrail, 3 is a connecting joint for connecting two handrails 1, and 4 is each handrail 1 It is the connection member for handrail which concerns on the embodiment of this invention which connects the connection joint 3. FIG. In FIG. 1, this connection joint 3 connects the handrail 1 at the corner portion of the hallway (use state 1), and each handrail 1 is attached to the wall surface 9 by a bracket (not shown).

(Linked joint)
The connection joint 3 is a general and well-known member used when connecting handrails having a circular cross section, and is made of a metal such as a zinc alloy or an aluminum alloy, for example. The connection joint 3 includes a substantially cylindrical connection portion 5 and a movable portion 6 that is swingably attached to both axial ends of the connection portion 5. These movable parts 6 are substantially hemispherical bases 6a to be inserted and attached in the connecting parts 5, and bottomed cylindrical handrails formed continuously from the bases 6a and opened outward in the axial direction. It consists of a mounting portion 6b. Each movable part 6 is located on the same plane between a position where the central axis Ax1 coincides with the central axis Ax2 of the connecting part 5 and a position inclined by approximately 45 degrees with respect to the central axis Ax2, and in the direction A in FIG. It is configured to move. A pair of screw insertion holes 8 and 8 through which the first screw 7 is inserted are formed in the handrail attachment portion 6b of each movable portion 6 so as to penetrate at positions opposed to each other in the diameter direction. These screw insertion holes 8 are provided at positions where a straight line connecting the centers thereof is perpendicular to a plane on which the movable portion 6 is movable in the A direction.

(handrail)
Each of the handrails 1 has a cross section that is different from a circular shape. Specifically, the handrail 1 includes a main body portion 2a having a circular cross section, and a ridge portion 2b that protrudes in a substantially trapezoidal cross section from the upper portion on the opposite side of the wall surface 9 of the main body portion 2a toward the radially outer side. And a flat surface portion 2c having a shape obtained by cutting the upper portion of the main body 2a on the wall surface 9 side into a flat shape. Thus, the handrail 1 in the embodiment of the present invention is formed in an irregular cross section different from the circular cross section, and the vertical direction and the direction with respect to the wall surface 9 are determined.

(Handrail connection member)
The handrail connection member 4 is generally provided between the connection joint 3 and each handrail 1 so as to be fitted to each other, and is formed so as to connect handrails having a circular cross section. The connecting joint 3 can be connected to the handrail 1 having an irregular cross section.

  That is, as shown in FIGS. 3 and 4, the handrail connection member 4 has a cylindrical joint-side fitting portion 10 that is fitted into the connection joint 3 on one end side in the axial direction (right side in FIG. 4). [Shown in FIG. 3 (b)] is formed continuously with the joint-side fitting portion 10 on the other end side in the axial direction (left side in FIG. 4) and is fitted into the handrail 1 A handrail side fitting portion 11 [shown in FIG. 3A] is provided.

  Specifically, the joint-side fitting portion 10 is formed in a circular cross section so as to be fitted into the handrail mounting portion 6 b of the movable portion 6 of the connection joint 3. On the other hand, the handrail-side fitting portion 11 is formed so as to be fitted to the end portion of the handrail 1 and is formed along the main body portion 2a and the protruding portion 2b of the handrail 1. 11a and a plane corresponding portion 11b provided inside the outer frame portion 11a and formed along the plane portion 2c of the handrail 1.

  As shown in FIG. 5, the joint-side fitting portion 10 is located at a position facing each other in the diametrical direction, and a pair of first lines arranged so that a straight line L1 connecting the centers thereof is horizontal. Screw insertion portions 13, 13 are provided. Further, the joint-side fitting portion 10 includes a pair of second screw insertion portions 14 and 14 that extend in the circumferential direction by an angle θ with the position on the straight line L2 orthogonal to the straight line L1 as the center when viewed in the axial direction. Is provided. The angle θ of the second screw insertion portion 14 is in the range of 56.9 ° ≦ θ ≦ 90 °, that is, tan θ ≧ 230/150 (0 <θ ≦ π / 2). The first and second screw insertion portions 13 and 14 may be formed so as to penetrate the joint-side fitting portion 10 or may be formed in a thin film shape so as to be penetrated by screws or the like. Good.

  As shown in FIG. 3, a plate-like boundary portion 15 is integrally formed on the inner side between the joint side fitting portion 10 and the handrail side fitting portion 11. The boundary portion 15 is provided with fourth screw insertion portions 16 and 16 located at positions facing each other in the diameter direction. As shown in FIG. 2, these fourth screw insertion portions 16 have second screws 17 for fixing the handrail connection member 4 to the end surface of the handrail 1, and the axial direction of the handrail connection member 4. Is to be inserted. The boundary portion 15 is formed in a substantially cross shape with a portion connecting the fourth screw insertion portions 16 and a portion extending so as to be orthogonal to the connection portions. The boundary portion 15 and the fourth screw insertion portion 16 are formed. The four third screw insertion portions 18 are provided in a portion excluding. As will be described later, the third screw insertion portion 18 is a portion into which a third screw 23 for fixing the end bracket 21 connecting the handrail 1 to the wall surface 9 to the handrail 1 is inserted in the axial direction. These third and fourth screw insertion portions 16 and 18 may be formed so as to penetrate through the boundary portion 15 as in the case of the first and second screw insertion portions 13 and 14, or may be formed in a thin film shape. May be.

  The handrail connection member includes, for example, metals such as zinc alloy and aluminum alloy, and various synthetic resins such as polypropylene (PP) resin, polyethylene (PE) resin, acrylonitrile-butadiene-styrene (ABS) resin, and vinyl chloride resin. Etc. can be formed.

(Fixing auxiliary member)
As shown in FIG. 2, a cylindrical fixing auxiliary member 19 is provided inside the joint side fitting portion 10. The fixing auxiliary member 19 holds the first screw 7 so that the first screw 7 does not fall off when the first screw 7 is screwed in. The fiberboard (IB, MDF, etc.), wood chip A board (particle board, strand board, OSB, etc.), solid wood, laminated wood, plywood, other woody materials, synthetic resin, etc. can be selected.

(Assembly method)
Next, an assembling method in the handrail connection structure will be described with reference to FIG.

  First, the handrail connection member 4 is attached to the end of the handrail 1. Each handrail 1 is arranged so that the flat surface portion 2c is positioned at the upper portion of the wall surface 9 side (front side in FIG. 2), while the handrail side fitting portion 11 of the handrail connection member 4 is directed toward the handrail 1 side. The handrail side fitting portion 11 is externally fitted to the end portion of the handrail 1 in a direction that matches the arrangement of the handrail 1.

  Then, from the joint-side fitting portion 10 side of the handrail connection member 4, each second screw 17 is inserted into the fourth screw insertion portion 16 in the axial direction of the handrail connection member 4 and screwed into the handrail 1. The handrail connection member 4 is fixedly integrated with the handrail 1.

  On the other hand, each movable part 6 of the connecting joint 3 is rotated in the A direction so that the central axis Ax1 of each movable part 6 and the central axis Ax2 of the connecting part 5 are each approximately 45 °. The center axes Ax1 of the parts 6 are made to intersect at right angles.

  Then, the fixing auxiliary member 19 is fitted into the joint-side fitting portion 10 of the handrail connection member 4, and the joint-side fitting portion 10 to which the fixing auxiliary member 19 is attached is attached to the connection joint 3 by the handrail. It fits into the part 6b.

  Finally, the first screw 7 is inserted into each screw insertion hole 8 of the handrail attachment portion 6b. When the pair of screw insertion holes 8 of the movable portion 6 are positioned vertically as shown in FIG. 2, the first screw 7 is the center of the upper and lower second screw insertion portions 14 of the joint side fitting portion 10. And is screwed into the fixing auxiliary member 19. In this way, the connection joint 3 and the handrail connection member 4 are fixed, and the handrail 1 and the connection joint 3 are connected via the handrail connection member 4.

  As described above, the two handrails 1 are connected to each other at a right angle by the connection joint 3, the connection joint 3 is disposed at the corner portion of the hallway, and each handrail 1 is attached to the wall surface 9 via the bracket.

(Use state 2)
Next, in the handrail connection structure according to the first embodiment of the present invention, as shown in FIG. 6, for example, the left handrail 1 and the right landing hand 1 are connected by the connecting joint 3. The usage state 2 to be connected will be described.

  In this case, the movable part 6 to which the handrail 1 on the landing side of the connection joint 3 is attached is arranged at a position where the central axis Ax1 is coaxial with the central axis Ax2 of the connection part 5, and the movable part on the opposite side (step side). 6 is arranged so that its central axis Ax1 has the same inclination as the inclination of the staircase with respect to the central axis Ax2 of the connecting portion 5. At this time, when the pair of screw insertion holes 8 of the movable portion 6 are arranged so that the straight line connecting the centers thereof is horizontal as shown in FIG. 6, each first screw 7 is connected to the joint-side fitting portion. The first screw insertion portions 13 are respectively inserted into the ten first screw insertion portions 13. Others are the same as in the usage state 1.

(Use condition 3)
Next, in the handrail connection structure of Embodiment 1 of the present invention, as shown in FIG. 7, the handrail 1 on the corridor side (left side of FIG. 7A) and the handrail 1 on the staircase side [FIG. The right side of (a)] is connected by the connection joint 3 described above.

  Specifically, the wall surface 9 of the ascending staircase is continuously provided at a right angle to the wall surface 9 on the corridor side. The handrail 1 on the staircase side is attached to the wall surface 9 with an inclination of the same angle as the inclination angle θ ′ of the staircase. That is, the central axis Ax1 of the movable portion 6 on the staircase side of the connection joint 3 is inclined with respect to the horizontal line H by the angle θ ′.

  The movable portion 6 of the connection joint 3 is oriented such that the central axes Ax1 intersect each other at right angles, and the screw insertion holes 8 of the handrail 1 on the staircase side are positioned vertically. On the other hand, the screw insertion hole 8 of the handrail 1 on the corridor side is located at a position where a straight line L3 passing through the center of the screw insertion hole 8 is inclined with respect to the vertical line V by the same angle θ ′ as the inclination of the stairs.

  In this case, each first screw 7 to be inserted into each screw insertion hole 8 of the movable part 6 on the staircase side is inserted into the center of each second screw insertion part 14 of the joint side fitting part 10. On the other hand, each first screw 7 inserted into each screw insertion hole 8 of the movable part 6 on the corridor side is inclined at an angle θ ′ with respect to a straight line L2 passing through the center of each second screw insertion part 14. Has been inserted. Here, each 2nd screw insertion part 14 is provided so that it may spread on both sides by angle theta to straight line L2, and since this angle theta is more than the maximum inclination of the staircase based on the building standard method, Regardless of the inclination θ ′ of the stairs, the first screw 7 can be inserted into the second screw insertion portion 14.

(Effect of Embodiment 1)
Therefore, in the handrail connection structure of the first embodiment, the handrail-side fitting portion 11 of the handrail connection member 4 is formed in accordance with the cross-sectional shape of the handrail 1, whereby the handrail-side fitting is performed. While the end portion of the handrail 1 is fitted to the portion 11, the cylindrical joint side fitting portion 10 is fitted into the handrail mounting portion 6 b of the general connection joint 3. Thus, since the handrail 1 and the connection joint 3 can be connected via the handrail connection member 4, regardless of the cross-sectional shape of the handrail 1, the handrail has a general circular cross section. The connecting joint 3 can be used. Therefore, since it is not necessary to prepare many kinds of joints according to the shape of the handrail 1, it is possible to prevent an increase in cost and improve manufacturing efficiency.

  Further, the joint-side fitting portion 10 is provided with a first screw insertion portion 13 at a position where the straight line L1 connecting the centers thereof is horizontal, and further, a position on the straight line L2 orthogonal to the straight line L1 of the first screw insertion portion 13. The second screw insertion portion 14 is provided with the center as the center. For this reason, even when the handrail 1 whose vertical direction is determined is connected, the first screw 7 can be inserted from either the vertical or horizontal direction.

  Further, each second screw insertion portion 14 is provided so as to spread in the circumferential direction by an angle θ with the position on the straight line L2 as the center, and this angle θ is set to be equal to or larger than the maximum inclination angle of the staircase. When the slide 1 and the handrail 1 on the staircase side are connected by the connection joint 3, even if the first screw 7 is inserted from the direction inclined by the inclination angle θ ′ of the staircase, the second screw insertion portion 14 is inserted. Since it can insert, the connection joint 3 and the connection member 4 for handrail can be fixed.

  Further, since the fixing auxiliary member 19 is provided inside the joint-side fitting portion 10, even if it is difficult to screw the screw into the connecting joint 3 and the handrail connecting member 4, rattling is caused. These can be fixed firmly.

<< Embodiment 2 of the Invention >>
Next, a handrail connection structure according to Embodiment 2 of the present invention will be described in detail with reference to FIG. The same components as those in FIGS. 1 to 7 are denoted by the same reference numerals, and detailed description of the same portions as those in the first embodiment will be omitted.

  That is, the connection structure of the handrail according to the second embodiment of the present invention is the same as that of the first embodiment in that the joint is the end bracket 21 that connects the handrail 1 and the wall surface 9 (which may be the upper surface of the cap). It differs from the connection structure of the handrail.

  Specifically, the end bracket 21 is a well-known rectangular box shape attached to the wall surface 9 at the base end portion, and a bottomed cylindrical handrail attaching portion 22 is opened at one end side of the tip end portion. Yes. Two screw insertion holes are provided at the bottom of the handrail mounting portion 22.

  And the 2nd screw 17 is inserted in each 4th screw insertion part 16 of the connection member 4 for handrails, and the edge part of the handrail 1 is fitted and fixed to the handrail side fitting part 11. FIG. The joint-side fitting portion 10 of the handrail connection member 4 is fitted into the handrail attachment portion 22 of the end bracket 21, and the third side is formed in the axial direction of the handrail connection member 4 from the side opposite to the handrail attachment portion 22. The screw 23 is inserted into each screw insertion hole, the third screw 23 is inserted into the left and right third screw insertion portions 18 and screwed into the handrail 1, and the end bracket 21 is connected to the handrail connection member 4 (handrail Fix to 1). Thus, the handrail 1 and the wall surface are connected by attaching the end bracket 21 to which the handrail 1 is attached via the handrail connection member 4 to the wall surface. When the end bracket 21 is vertically arranged and attached to the handrail 1, the third screw 23 is inserted into the upper and lower third screw insertion portions 18.

(Effect of Embodiment 2)
Therefore, in the handrail connection structure of the second embodiment, the end bracket that connects the handrail 1 to the wall surface 9 by inserting the third screw 23 into the third screw insertion portion 18 provided in the boundary portion 15. 21 and the handrail 1 (handrail connection member 4) can be fixed. At this time, since the third screw insertion portion 18 is provided at a position where the third screw 23 is inserted, the third screw 23 does not interfere with the boundary portion 15 and cannot be attached.

(Other embodiments)
In addition, the above-mentioned embodiment is an illustration of this invention, Comprising: This invention is not limited to this example. For example, the following configuration may be used.

  That is, in the above embodiment, the boundary portion 15 of the handrail connection member 4 is formed in a substantially cross shape, and the portion excluding the boundary portion 15 and the fourth screw insertion portion 16 is defined as the third screw insertion portion 18. However, the shape of the boundary portion 15 is not limited to this. If the third screw insertion portion 18 is provided at a position where the third screw 23 can be inserted when the end bracket 21 of the second embodiment is fixed to the handrail 1 (handrail connection member 4). Good.

  Moreover, in the said embodiment, although the fixing auxiliary member 19 was provided between the handrail attachment part 6b of the movable part 6, and the joint side fitting part 10, this does not necessarily need to be provided. In this case, what is necessary is just to form the shape of the 1st and 2nd screw insertion parts 13 and 14 of the joint side fitting part 10 so that the 1st screw 7 can be screwed together.

  Moreover, the cross-sectional shape of the handrail 1 is not limited to the shape of the said embodiment, It can be set as various shapes according to an installation place, a use, etc. According to this shape, the connection member 4 for a handrail 4 The handrail side fitting portion 11 may be formed.

  As described above, the present invention is useful for a handrail connection member that connects a handrail and a joint and a handrail connection structure including the handrail connection member.

It is a top view which shows the use condition 1 of the connection structure of the handrail which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of the connection structure of the handrail of Embodiment 1. FIG. The handrail connection member of FIG. 2 is shown, (a) is the side view which looked at the handrail side fitting part, (b) is the side view which looked at the joint side fitting part. The handrail connection member is shown, (a) is a view seen from above, (b) is a view seen from the side opposite to the wall surface, and (c) is a view seen from below. It is the IV-IV sectional view taken on the line of FIG.4 (b). It is a side view which shows the use condition 2 of Embodiment 1 of this invention. The use condition 3 of Embodiment 1 is shown, (a) is the side view seen from the corridor side, (b) is the side view seen from the staircase side. It is a disassembled perspective view which shows the connection structure of the handrail which concerns on Embodiment 2 of this invention.

1 Handrail 3 Connection joint (joint)
4 Handrail connection member 9 Wall surface 10 Joint side fitting portion 11 Handrail side fitting portion 13 First screw insertion portion 14 Second screw insertion portion 15 Boundary portion 18 Third screw insertion portion 19 Fixing auxiliary member 21 End bracket ( Joint)
23 Third screw (screw)

Claims (4)

A handrail connection member provided between a handrail and a joint that connects the handrails or handrails to the mounting surface,
A cylindrical joint-side fitting portion fitted into the joint is disposed at one end side in the axial direction, and a cylindrical handrail-side fitting portion fitted into the handrail is disposed at the other end side in the axial direction. With each
Sectional shape of the joint-side fitting unit and the handrail side fitting portion varies from each other,
On the side of the joint side fitting part,
A pair of first screw insertion portions located at positions facing each other in the diameter direction;
A pair of second screw insertion portions are provided that extend on both sides in the circumferential direction by an angle θ with the position on a straight line orthogonal to the straight line connecting the centers of the first screw insertion portions as viewed in the axial direction,
The angle θ is in a range of tan θ ≧ 230/150 (0 <θ ≦ π / 2) . In the handrail connection member of claim 1 ,
At the boundary between the joint side fitting part and the handrail side fitting part,
A handrail connection member, wherein a third screw insertion portion is provided at a position where a screw for fixing the joint connecting the handrail to the mounting surface to the handrail is inserted in the axial direction. A joint is externally fitted to the joint side fitting portion of the handrail connection member according to claim 1 or 2 ,
A handrail connection structure, wherein an end portion of a handrail having a cross section different from a circular shape is fitted to a handrail side fitting portion of the handrail connection member. In the connection structure of the handrail of Claim 3 ,
A handrail connection structure, wherein a fixing auxiliary member is provided inside a joint side fitting portion of the handrail connection member.

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