JP5641910B2 - Handrail joint material - Google Patents

Description

  The present invention relates to a handrail joint material used to construct a continuous handrail by connecting a plurality of handrail members. In particular, the present invention relates to a handrail joint material used for constructing a continuous handrail inclined along a slope or a staircase or the like on a wall surface of a hoistway such as a slope or a staircase.

In the staircase of the building, there is a landing that connects the lower stairs and the upper stairs. At this landing, the lower stairs and the upper stairs are changed so that the direction of movement of the person going up and down the stairs changes, for example, by 180 degrees. May be placed. The wall surface of such a staircase includes a pair of inner walls that face each other across a staircase or landing. Of these inner walls, when constructing a continuous handrail on the outer inner wall, the handrail core material of the continuous handrail extending between the stairs and the landing is subjected to vertical bending to the continuous handrail extending into the landing. The handrail core is bent in the horizontal direction. However, bending of these vertical bending and horizontal are both because it is a two-dimensional bending, difficulties associated with these processing are not high as the left. On the other hand, when constructing a continuous handrail on the inner wall of the staircase, in general, the handrail core material of the continuous handrail extending between the staircase and the landing is divided into a vertical bending process and a horizontal bending process. In addition to these bending processes, it is necessary to perform a twisting process or a twisting process around the axis of the handrail core. The bending process combining the bending process in the vertical direction and the bending process in the horizontal direction is a three-dimensional bending process. Further, the bending angle and the twisting angle of the handrail core material differ depending on the construction site of the continuous handrail. Therefore, the continuous handrail installed on the inner wall inside the staircase involves considerable difficulty in the construction between the staircase and the landing.

  Conventionally, in order to construct a continuous handrail, an aluminum alloy handrail core material (hereinafter referred to as “aluminum core material”) of a continuous handrail is heated and softened by a heating means such as a gas burner at a construction site. The core material was bent and twisted to obtain an aluminum core material having a desired shape. However, this processing method particularly requires high skill in bending, and therefore there is no other way than professional processing by hand. In addition, this processing method involves measuring a handrail processing portion. Therefore, such a processing method usually requires a lot of time and cost.

  According to Japanese Patent Laid-Open No. 2004-131966, according to claim 1 of the same publication, “a universal corner tool for forming a bent portion on a handrail, and a shaft body that can be expanded and contracted, and an arbitrary interval along the shaft body” A plurality of flanges installed on the shaft body are integrally formed, and provided with a synthetic resin handrail main body formed by extending a connection shaft portion from both ends of the shaft body. A synthetic resin boss member having an outer diameter equal to that of the flange is integrally formed and joined, and a flexible tube is fitted to the outer side of each flange of the handrail main body and the boss member. A universal corner tool characterized by the above. " The shape of the shaft body 7 is not described in the publication, but in the paragraph 0019 of the publication, “All flanges 6 are each made of a flexible resin that is integrated with each part of the shaft body independently. Because it is freely stretchable and bendable, it is arranged so that it always faces the bending center in any bending direction. Therefore, even if there are a plurality of bending centers, the bending state described above depends on the state of applied force. The shape of the shaft body 7 is the same as the shape of the shaft body 7 because it is possible to form various corner portions. Similar to the connecting shaft portion 3 and the boss portion 4 described in FIG. 2 of the publication, it is considered to be cylindrical.

  Japanese Patent Laying-Open No. 2010-180621 discloses a joint member for forming a corner portion inclined on a handrail. This joint member has a synthetic resin joint body formed in advance along a circular arc-shaped axis extending over a predetermined length in one plane, and connecting pieces respectively formed at both ends of the joint member. After the joint body is heated and softened, the corners with inclined handrails are formed by torsional deformation around the tangents at both ends of the arcuate axis of the joint body. .

  Japanese Patent Application Laid-Open No. 2010-236343 discloses, according to claim 1 of the same publication, “a connecting handrail for connecting main body handrails (5) as main body portions of the handrail (4), A material (41) and a cover (42) that is flexible and covers the core material (41), and the core material (41) is arranged side by side in the handrail longitudinal direction (A) Disclosed is a connection handrail characterized by being configured to be bent by connecting a plurality of core material segments (43, 44) via a bendable joint (45). " Referring to paragraph 0033 of the publication, “As shown in FIGS. 9, 10, and 11, the connecting handrail 6 is composed of a resin core 41 and a resin cover 42 (headwood). ”, And referring to paragraph 0040 of the publication,“ in the connection handrail 6, the core material segments 43 and 44 and the joint portion 45 are formed by forming the core material 41 with resin. The connecting portion 46 can be simultaneously molded in the mold, and the flexible core material 41 can be easily produced. " Further, referring to paragraph 0034 of the publication, “the joint portion 45 has a cylindrical shape having an axis center in the handrail longitudinal direction A and can be bent in a direction intersecting with the handrail longitudinal direction A”. Referring to paragraph 0035 of the publication, “the joint 45 is a center side in a direction perpendicular to the handrail longitudinal direction A of the core end segment 43 and the core intermediate segment 44 ( Therefore, the connecting handrail 6 is in all directions (an oblique direction between the upper and lower left and right and the upper and lower left and right) in the direction intersecting with the handrail longitudinal direction A from the linear state shown in FIG. It can be bent in a curved shape at an arbitrary bending angle. " Further, referring to paragraph 0043 of the publication, “the connecting handrail in the form of FIG. 12 and FIG. 13 includes a core material 41 and a cover 42 (not shown) that covers the core material 41, and a core material. In the paragraph 0044 of the publication, “the reinforcing member 53 is a straight rod-shaped member made of a metal material having plasticity such as aluminum ( It is formed in a round bar shape and can be bent and plastically deformed. " Then, referring to paragraph 0046 of the publication, “in the core material 41 of the connection handrail 6 having the form shown in FIGS. 12 and 13, a pair of ribs 54 are integrally formed with each joint portion 45 by a resin. The pair of ribs 54 protrudes in a direction orthogonal to the handrail longitudinal direction A and the vertical direction, and is provided at a radially symmetrical position of the joint portion 45 and is adjacent in the handrail longitudinal direction A. It is provided between the core material 41 segments. "

JP 2004-131966 A JP 2010-180621 A JP 2010-236343 A

  In the universal corner tool disclosed in Patent Document 1, since the shaft body is made of a soft resin in order to make the handrail main body extendable and bendable in all directions, the strength of the handrail main body may be insufficient. Moreover, since the joint member of the corner part of the handrail disclosed in Patent Document 2 can use a hard synthetic resin for the joint member, it can give sufficient strength to the corner part of the handrail. In forming the inclined corner portion, it is necessary to individually adjust the torsion angles at both ends of the joint body in accordance with the handrails at the construction site in a state where the joint body is heated and softened. The connecting handrail disclosed in Patent Document 3 is bent in a curved shape at an arbitrary bending angle in all directions (an oblique direction between up, down, left, right, up, down, left and right) in a direction intersecting with the longitudinal direction of the handrail. In order to make it flexible, it has a resin-made columnar joint, so there is a risk that the handrail strength will be insufficient, as with the universal corner tool disclosed in Patent Document 1, and the strength of this continuous handrail is improved. In order to achieve this, it is necessary to embed a rod-shaped reinforcing member formed of a metal material having plasticity such as aluminum in the core material, and to integrally form a pair of ribs at each joint portion with resin.

  An object of the present invention is to provide a handrail joint material capable of three-dimensional bending deformation and torsional deformation at room temperature and having sufficient connection strength.

  Another object of the present invention is to provide a handrail joint material that enables easy construction of a corner portion of a handrail that can be easily constructed and that can achieve an excellent finish.

  Still another object of the present invention is to provide a handrail joint material that can be easily formed integrally with a synthetic resin material having flexibility.

  The present invention is a joint material for a handrail, in which a second handrail member is connected to the first handrail member, and an inclined corner portion is formed between the first handrail member and the second handrail member. The joint material includes a first connection end connected to the first handrail member, a second connection end connected to the second handrail member, and the first and second connections. A bridge portion extending between the end portions and integrated with the first and second connection end portions, and a plurality of ribs formed in the bridge portion for attaching the headboard, The bridging portion is formed of a flexible material, and the bridging portion has at least one curved portion and at least one straight portion, and the curved portion has an axis line of the first connecting end portion and the first connecting portion. The axis of the connecting end of the two intersects at a predetermined angle within the plane through which both axes pass. The straight portion extends in a straight line along the plane, and the curved portion includes an inner surface located radially inward of the curved portion and a radial direction of the curved portion. It has a form that can be bent and deformed only in one or both directions of the outer surface located on the outer side, and the linear portion is arranged along a direction different from the direction in which the bending portion can be bent and deformed. One of the ribs constituting the connecting member has a form that can be bent and deformed in a direction or in both directions, and each of the ribs is arranged as a connecting member at the connecting portion of the curved portion and the straight portion. The main feature is that one end of the curved portion is integrated with the side surface, and one end of the linear portion is integrated with the other side surface of the rib constituting the connecting member.

  The joint material according to the present invention is also characterized in that the first connecting end, the second connecting end, the bridging portion, and the plurality of ribs are integrally formed of a flexible synthetic resin material.

  In the joint material of the present invention, the curved portion further extends along a curved axis located in the plane, and the linear portion extends along a linear axis located in the plane, The direction in which the bending portion can be bent and deformed and the direction in which the linear portion can be bent and deformed form an angle of 90 degrees.

  In the joint material of the present invention, the bending portion further includes a pair of side surfaces that connect the inner surface and the outer surface, and the cross-section of the bending portion in a direction orthogonal to the bending axis line is between the pair of side surfaces. The distance is set to a dimension larger than the distance between the inner surface and the outer surface, and the linear portion includes a pair of planes and a pair of convex curved surfaces connecting the pair of planes, and is orthogonal to the linear axis. The distance between the pair of convex curved surfaces is set to be larger than the distance between the pair of planes in the cross section of the straight line portion in the direction in which the pair is formed.

  The joint material of the present invention is further characterized in that the cross-sectional shape of the curved portion is the same shape over the entire length of the curved portion, and the cross-sectional shape of the linear portion is the same shape over the entire length of the linear portion. .

  The joint material according to the present invention is further characterized in that the bridging portion has a pair of the straight portions and the one curved portion disposed between the pair of straight portions.

  In the joint material of the present invention, the rib is formed in a direction crossing the curved axis and the linear axis, and the thickness of the rib formed on the linear portion is set so that the interval between the ribs is constant. In addition, the thickness of the rib formed on the curved portion is gradually reduced from the outer surface toward the inner surface of the curved portion.

  Since the handrail joint material of the present invention can bend and deform the bending portion and the straight portion constituting the bridging portion in different directions, three-dimensional bending deformation is possible. Also, by arranging a rib at the connecting portion of the curved portion and the linear portion, integrating one end of the curved portion on one side surface of the rib, and integrating one end of the linear portion on the other side surface of the rib, Since the curved portion and the straight portion are firmly connected, the shearing force accompanying torsional deformation of the joint material can be dispersed throughout the bridging portion. Therefore, the twist angle of the joint material can be sufficiently increased. Furthermore, since the bending deformable direction of the curved portion and the straight portion constituting the bridging portion is limited, the thickness of the bridging portion can be increased in the direction in which the bridging portion is not bent and deformed. Therefore, the strength of the crosslinked part can be increased.

  Other features of the present invention will become apparent from the description of the embodiments of the present invention described with reference to the drawings.

FIG. 1 shows a joint material of the present invention integrally molded using a flexible synthetic resin material. FIG. 1 (A) is a perspective view of the joint material, and FIG. It is sectional drawing of the arrow direction which follows the aa line of (A), FIG.1 (C) is sectional drawing of the arrow direction which follows the bb line or cc line of FIG. 1 (A). is there. FIG. 2 is a side view of the joint material of FIG. 1 viewed from the inside of the curved portion. FIG. 3 is a plan view of the joint material of the present invention shown in FIG. 4 is a cross-sectional view corresponding to the plan view of the joint material of the present invention shown in FIG. 3, and is a cross-sectional view in the direction of the arrow along the line dd in FIG. FIG. 5 is a perspective view of a rib that is disposed between a curved portion and a straight portion constituting the bridging portion of the joint material of the present invention and functions as a connecting member between the curved portion and the straight portion. It is a perspective view of the arrow direction which follows e line or ff line. FIG. 6 is a conceptual diagram showing the direction of bending deformation and torsional deformation of the joint material of the present invention shown in FIGS. FIG. 7 is constructed by using the joint material of the present invention on the inner wall of the staircase where the lower stairs and the upper stairs are arranged so that the direction of movement of the person who goes up and down the stairs changes 180 degrees at the landing. It is a principal part side view of a continuous handrail. FIG. 8 is a right side view of the continuous handrail of FIG. FIG. 9 is a main part perspective view showing a procedure when attaching the headboard to the continuous handrail shown in FIGS. 7 and 8.

  By using a joint material integrally formed of a flexible synthetic resin material, a handrail joint material that enables three-dimensional bending deformation and torsion deformation at room temperature and has sufficient connection strength is realized.

1 to 6 show a handrail joint material 1 according to the present invention. The joint material 1 is manufactured by integral molding using a flexible synthetic resin material such as polypropylene resin, and forms an inclined corner portion of the continuous handrail 2 as shown in FIGS. As shown in FIGS. 3 and 4, the joint material 1 has a curved shape as a whole. A first connecting end 3 protrudes from one end of the joint material 1, and a second connecting end 4 protrudes from the other end of the joint material 1. And these connection end parts 3 and 4 are connected by the bridge | crosslinking part 7 in which the some rib 5, 5, ..., 6, 6 ... was integrally formed. Bridge portion 7, a linear portion 7a which extends a distance L ₁ along a linear axis 3a of the coupling end 3, the linear portion extending a distance L ₂ along a linear axis 4a of the connecting end portion 4 7b and a curved portion 7c extending between the straight portion 7a and the straight portion 7b. The curved portion 7c has a curved axis R extending in the shape of a quadrant around the center O. Thereby, the connection end 3 and the connection end 4 form an angle of 90 degrees with each other.

The linear axis 3a constitutes an axis passing through the center of the connecting end 3 and the straight portion 7a of the bridging portion 7, and the linear axis 4a is an axis passing through the center of the connecting end 4 and the straight portion 7b of the bridging portion 7. Configure. The curved axis R constitutes an axis passing through the center of the curved portion 7c of the bridging portion 7, and one end thereof intersects with the linear axis 3a and the other end intersects with the linear axis 4a. FIG. 6 is a conceptual diagram showing the positional relationship between the straight portion 7a, the straight portion 7b, and the curved portion 7c of the bridging portion 7. As shown in the figure, the bending portion 7c is formed in a plane in which the linear axis 3a of the first connecting end 3 and the linear axis 4a of the second connecting end 4 pass through these axes 3a, 4a. Are bent in advance so as to intersect at an angle of 90 degrees, and the bending axis R of the bending portion 7c extends in a plane through which the axes 3a and 4a pass. The curved portion 7c of the bridging portion 7 and the straight portions 7a and 7b intersect at an angle of 90 degrees, for example. Among these, the curved portion 7c has a form that can be bent and deformed only in one or both of the inner surface 7d located in the radial direction and the outer surface 7e located in the outer radial direction. For example, in FIG. 6, when one connecting end 4 is fixed, the other connecting end 3 can be bent and deformed so that it can be displaced by an angle θ within a plane through which the axes 3a and 4a pass. Set to Moreover, the straight portions 7a and 7b have a form that can be bent and deformed in one direction or in both directions along a direction different from the direction in which the bending portion 7c can be bent. For example, in FIG. when fixing the ends 4, the other connecting end 3, the axis 3a, in the direction N ₁ and N ₂ is perpendicular to the plane 4a passes, is set to a deformable form bending. As described above, the bridging portion 7 is integrally formed with the connecting end portions 3 and 4, and the straight portions 7a and 7b and the bending portion 7c of the bridging portion 7 are integrally formed of a flexible synthetic resin material. Thus, for example, in FIG. 6, when fixing one of the connecting ends 4, around the other connecting end 3 of the shaft line 3a, Z ₁ -Z ₂ direction to allow torsional deformation by a desired angle The forms of the straight portions 7a and 7b and the curved portion 7c of the bridging portion 7 are set.

  FIG. 1B shows a cross-sectional view of the curved portion 7 c of the bridging portion 7. The curved portion 7c has a pair of side surfaces 7f and 7g that connect the inner surface 7d and the outer surface 7e. In this cross section, the distance between the pair of side surfaces 7f and 7g is greater than the distance between the inner surface 7d and the outer surface 7e. Large dimensions are set. Accordingly, the bending portion 7c is prevented from being bent and deformed in the directions of the side surfaces 7f and 7g, and the bending portion 7c can be bent and deformed only in the directions of the inner surface 7d and the outer surface 7e. The cross-sectional shape of the bending portion 7c is the same over the entire length of the bending portion 7c along the bending axis R.

  FIG. 1C shows a cross section of the straight portions 7a and 7b of the bridging portion 7. These straight portions 7a and 7b have a pair of flat surfaces 7h and 7i and a pair of convex curved surfaces 7j and 7k that connect these flat surfaces 7h and 7i. In this cross section, a pair of convex curved surfaces 7j, The distance between 7k is set to be larger than the distance between the pair of planes 7h and 7i. Accordingly, the straight portions 7a and 7b are prevented from being bent and deformed in the directions of the convex curved surfaces 7j and 7k, and the straight portions 7a and 7b can be bent and deformed only in the directions of the pair of flat surfaces 7h and 7i. The cross-sectional shapes of the straight portions 7a and 7b are the same over the entire length of the straight portions 7a and 7b along the straight axes 3a and 4a, respectively.

  As shown in FIG. 1B, the plurality of ribs 6, 6... Integrally formed with the curved portion 7c of the bridging portion 7 extend in a direction crossing the curved axis R, and an upper surface 6a and a lower surface of each rib 6. Each of 6b is formed with a pair of opposing locking surfaces 6c and 6c for locking the caps described later. The pair of side surfaces 7f and 7g of the bridging portion 7 coincides with the surfaces connecting these locking surfaces 6c and 6c. Both side surfaces 6d and 6e of each rib 6 are curved in a convex shape to form a support surface for the headboard. As shown in FIGS. 3 and 4, the thickness of the rib 6 formed in the curved portion 7c gradually decreases from the side surface 6e toward the side surface 6d in order to make the gap between the adjacent ribs 6 and 6 the same. It is formed as follows. This is to reduce a sense of incongruity when holding the bending portion 7c.

  As shown in FIG. 1C, the plurality of ribs 5, 5,... Integrally formed on the straight portions 7a, 7b of the bridging portion 7 respectively extend in a direction crossing the linear axes 3a, 4a. On the upper surface 5a and the lower surface 5b of the rib 5, a pair of opposing locking surfaces 5c and 5c for locking the headboard are formed. The pair of flat surfaces 7h and 7i of the bridging portion 7 are positioned on the linear axes 3a and 4a side with respect to the surfaces connecting these locking surfaces 5c and 5c, and the bridging portion 7 is in the direction of the pair of flat surfaces 7h and 7i. It is easy to bend and deform. Both side surfaces 5d and 5e of each rib 5 are curved in a convex shape to form a support surface for the headboard. The pair of convex curved surfaces 7j and 7k of the bridging portion 7 coincides with these side surfaces 5d and 5e, and the bridging portion 7 is difficult to bend and deform in the direction of the convex curved surfaces 7j and 7k. As shown in FIGS. 3 and 4, the thickness of the ribs 5 formed in the straight portions 7 a and 7 b is set to a constant thickness so that the gaps between the adjacent ribs 5 and 5 are the same. This is to reduce a sense of incongruity when the straight portions 7a and 7b are gripped.

1A, 2 and 3, among the plurality of ribs 6 formed integrally with the curved portion 7c, ribs 6f disposed along the straight portions 7a and 7b, 6f has the straight portions 7a and 7b surface-bonded to one side surface 6g so as to function as a connecting member for firmly connecting the straight portions 7a and 7b of the bridging portion 7 and the curved portion 7c. The curved portion 7c is surface-bonded to the side surface 6h (see FIG. 5). Thus, when the Z ₁ -Z ₂ direction of torsional deformation illustrated in FIG. 6 arises, straight portions 7a, because 7b and torsional forces between the curved portion 7c is reliably transmitted by the torsional deformation The shearing force generated in the bridging portion 7 can be dispersed throughout the bridging portion 7. Therefore, it is possible to set a large twist angle of Z ₁ -Z ₂ direction, it is possible to improve the coupling strength of the handrail upon applying a continuous handrail.

The joint material 1 of the present invention shown in FIGS. 1 to 6 is a bending deformation in an angle range from 90 degrees to 120 degrees depending on the inclination angle of the handrails to be connected when a continuous handrail is constructed on the inner wall of the staircase landing. Was found to result in In addition, when constructing a continuous handrail on the inner wall of the landing, the handrail facing the landing will connect an inclined handrail extending from two directions up and down, so the maximum twist angle will be 35 degrees or more on one side, and the upper and lower handrails to be connected It turned out that it twists only 70 degrees. Furthermore, it has been found that the handrail extending from the landing to the side wall of the staircase can be twisted up to 45 degrees depending on the inclination angle of the handrail to be connected. Therefore, first, in order to make the joint material 1 of the handrail of the present invention correspond to the twist of the angle of 45 degrees at the maximum, the cross-sectional shapes of the straight portions 7a and 7b and the curved portion 7c of the bridging member 7 are respectively changed to the straight portions 7a. 7b and the curved portion 7c are the same over the entire length, and the straight portions 7a and 7b and the curved portion 7c are firmly joined to each other via the ribs 6f and 6f. The acting shearing force was dispersed and supported throughout the bridging part 7. Next, in order to cope with the bending deformation of the joint material 1 of the present invention in an angle range from 90 degrees to 120 degrees, the joint ends 3 and 4 of the joint material 1 are jointed in advance so as to form an angle of 90 degrees. When the material 1 is molded into a curved shape and the connecting end portions 3 and 4 of the joint material 1 undergo bending deformation to an angle of 120 degrees, the angle θ in FIG. The bending portion 7c is configured to bend. When the joint material 1 undergoes bending deformation outside this bending range, as shown in FIG. 6, the straight portions 7a and 7b are bent and deformed in the N ₁ -N ₂ direction. By combining the bending deformation of the curved portion 7c of the joint material 1 and the bending deformation of the linear portions 7a and 7b, a three-dimensional bending can be realized. Therefore, the cross-sectional shape of the bridging member 7 is not circular, but in all directions. You can adjust the angle.

  FIGS. 7 to 9 show a continuous handrail 2 constructed using the joint material 1, and the continuous handrail 2 has a lower stairs and an upper part so that the direction of movement of the person moving up and down the stairs changes 180 degrees at the landing. It is installed on the inner wall of the staircase where the stairs are located. The joint material 1 according to the present invention extends in parallel with a headboard 10a of a handrail 10 attached to a wall surface 8 along a staircase below the staircase by a bracket 9 and an end wall surface 14 facing a landing. In addition, another joint member 1 'of the present invention is connected to the wall surface 11 along the stairs above the staircase and attached to the wall 11 inclined by the bracket 12 so as to connect the gantry brackets 15 to each other. The connection between 13a and the cap stand 15 is connected. The joint material 1 has the connection end 3 inserted into the headboard receiver 10a of the handrail 10, the connection end 3 is fixed to the headboard receiver 10a by the tap screw 16, and then the connection end 4 is inserted into the headboard receiver 15. , And is fixed by a tap screw 17. The other joint material 1 ′ is inserted into the headboard receiver 13 a of the handrail 13 at the connecting end 4 and fixed to the headboard receiver 13 a by a tap screw (not shown), and then the connecting end 3 is inserted into the headboard receiver 15. The cap screws 15 are fixed by the tap screws 18. At this time, since the joint members 1 and 1 ′ can be subjected to three-dimensional bending deformation and torsional deformation, the headboard receiver 10 a of the handrail 10 and the headboard receiver 13 a of the handrail 13 are connected via the headboard receiver 15. be able to. Then, a covering material (headwood) 19 that has been sufficiently softened by heating is placed on the headboard receptacles 10a, 15, and 13a as shown in the figure, and partially cured as necessary to complete the continuous handrail 2.

  In the joint material 1, 1 ′ of the present invention, a plurality of ribs 5, 6 are arranged at the same interval in order to smoothly join the headboard receivers 10 a, 15, 13 a, and both side surfaces 5 d, 5 e of the ribs 5 Both side surfaces 6d and 6e are formed in the same shape as the outer shape of the headboard receivers 10a, 15, and 13a so that the outer shape of the covering material (headwood) 19 is not uneven. In addition, the shapes of the joint materials 1 and 1 ′ are made vertically symmetrical, and consideration is given so as not to cause individual differences in bending deformation of the joint materials 1 and 1 ′.

Incidentally, the linear portion 7a, the length of 7b _L 1, _{L 2} of the joint member 1 of the bridge portion 7 of the present invention is arbitrary. Further, the length of the bending axis R of the bending portion 7c is also arbitrary. The connecting end portions 3 and 4 of the joint material 1 are not limited to 90 degrees and can take any angle.

DESCRIPTION OF SYMBOLS 1, 1 'joint material 2 Continuous handrail 3 Connection end part 3a Linear axis 4 Connection end part 4a Linear axis 5, 6 Rib 7 Bridging part 7a, 7b Linear part 7c Curved part R Curved axis 19 Cover material (headwood)

Claims (7)

  A joint material for a handrail, wherein a second handrail member is connected to the first handrail member, and an inclined corner portion is formed between the first handrail member and the second handrail member, the joint material Between the first connection end connected to the first handrail member, the second connection end connected to the second handrail member, and the first and second connection ends. And having a plurality of ribs formed in the bridging portion for attaching a headboard, the bridging portion being integrated with the first and second connecting end portions, The bridging portion is formed of a flexible material, and the bridging portion has at least one curved portion and at least one straight portion, and the curved portion includes the axis of the first connecting end and the second connecting end. So that the axis of the part intersects at a predetermined angle within the plane through which the two axes pass. The straight portion extends in a straight line along the plane, and the curved portion is formed on an inner surface located radially inward of the curved portion and radially outward of the curved portion. It has a form that can be bent and deformed only in one or both directions of the outer surface located, and the linear portion is one direction or both along a direction different from the bending deformable direction of the curved portion. Each of the ribs is arranged as a connecting member at each of the connecting portions of the curved portion and the straight portion, and the ribs constituting the connecting member are arranged on one side surface of the rib. A handrail joint material, wherein one end of the curved portion is integrated, and one end of the linear portion is integrated with the other side surface of the rib constituting the connecting member.   2. The joint material according to claim 1, wherein the first connection end portion, the second connection end portion, the bridge portion, and the plurality of ribs are integrally formed of a flexible synthetic resin material. The joint material.   3. The joint material according to claim 1, wherein the curved portion extends along a curved axis located in the plane, and the straight portion extends along a linear axis located in the plane. The joint material is characterized in that a direction in which the bending portion can be bent and deformed and a direction in which the linear portion can be bent and deformed form an angle of 90 degrees.   4. The joint material according to claim 3, wherein the bending portion includes a pair of side surfaces that connect the inner surface and the outer surface, and the cross-section of the bending portion in a direction perpendicular to the bending axis is between the pair of side surfaces. The distance is set to be larger than the distance between the inner surface and the outer surface, and the linear portion has a pair of planes and a pair of convex curved surfaces connecting the pair of planes. In the cross section of the straight portion in the direction orthogonal to each other, the distance between the pair of convex curved surfaces is set to be larger than the distance between the pair of planes.   The joint material according to claim 4, wherein the cross-sectional shape of the curved portion is the same shape over the entire length of the curved portion, and the cross-sectional shape of the linear portion is the same shape over the entire length of the linear portion. The joint material.   6. The joint material according to claim 1, wherein the bridging portion includes a pair of the straight portions and a single curved portion disposed between the pair of straight portions. The joint material.   The joint material according to any one of claims 3 to 6, wherein the rib is formed in a direction crossing the curved axis and the linear axis, and the interval between the ribs is constant. The thickness of the rib formed on the curved portion is made constant, and the thickness of the rib formed on the curved portion is gradually decreased from the outer surface to the inner surface of the curved portion. The joint material.

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