JP2005188114A - Handrail joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handrail joint which is arbitrarily bendable in any direction. <P>SOLUTION: The handrail joint is composed of four joint members 1a, 1b, 1c and 1d each formed of a circular portion 5 having a circular cross section arranged on one side thereof, and a semicircular portion 6 having a semicircular cross section arranged on the other side thereof. The joint members 1a, 1b, 1c and 1d are axially arranged side by side, and the two central joint members 1b, 1c are abutted against each other via their circular portions 5 while the two joint members 1b, 1c are abutted against the outside joint members 1a, 1d, respectively, via plane portions of the semicircular portions. Further the joint members are connected to one another in a manner rotatable about a shaft orthogonal to the plane portions 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a joint for connecting handrails.

  In general, a handrail is an auxiliary facility that mainly allows an elderly person or a sick person to walk stably, but the handrail is not always provided straight. Depending on the situation of the site to be installed, it bends sideways or continues upward or downward, and the angle is large or small.

Therefore, conventionally, as shown in Patent Document 1 or Patent Document 2, straight handrails are connected by a joint, and the joint itself can be bent.
Japanese Patent No. 3088676 JP 2002-167937 A

  However, since the joint is adjusted by increasing / decreasing the angle adjustment member, the adjustment angle is determined and fine adjustment cannot be performed, so that accurate angle adjustment according to the situation in the field cannot be performed.

  In addition to having to attach the angle adjusting member with screws, it is necessary to prepare a large number of angle adjusting members according to the situation of the handrail installation site.

  Furthermore, since the angle adjustment member has a wedge shape, it cannot be straightened even when combined, so even when connecting the handrail straight, the connecting portion is bent, so it is uncomfortable when walking along the handrail. is there.

  This invention makes it the 1st subject to solve the said problem and to provide the joint for handrails which can bend freely in any direction and in any angle.

  Moreover, this invention makes it the 2nd subject to provide the handrail coupling which does not feel discomfort also when walking along a handrail by connecting a handrail in straight shape.

  In order to solve the first problem, the handrail joint according to the present invention is a handrail joint composed of four joint members, each of which has a circular portion with a circular cross section on one side and a cross section on the other side. Are arranged in the axial direction, the two joint members in the center are butted together at the circular portion, and are pivotally connected around the axis of both circular portions, The two joint members and the joint member on the outer side thereof are abutted with each other at a plane portion of a semicircular portion, and are connected to be rotatable around an axis perpendicular to the plane portion.

  In order to solve the second problem, when the handrail joint according to the present invention connects the end portions of the handrail to the circular portions of the joint members at both ends and aligns the four joint members in the straight direction, The whole is formed in a cylindrical shape having substantially the same diameter as the handrail.

  According to the first aspect of the present invention, the two joint members in the center of the four joint members are rotatable around the axis, and the two joint members connected to the outside are Since the two joint members are connected so as to be rotatable around an axis perpendicular to the plane portion, the handrail can be freely bent in any direction by connecting the handrail to the outer joint member. Can do. Therefore, even if the handrail to be connected at the site to be installed bends sideways or continues upward or downward, fine adjustment is possible even if the angle is large or small, and it can be freely adjusted according to the situation at the site Handrails can be connected.

  In addition, the angle of the joint is simply adjusted by rotating the joint members connected to each other, so that the work is easy and easy to handle.

  According to the invention of claim 2, when the four joint members are aligned in the straight direction, the whole is formed in a cylindrical shape having substantially the same diameter as the handrail. If a structure formed so as to surround the handrail is used, this bracket can also be used for the joint portion. In addition, since the shaft centers of the two joint members at the center are always on the same axis, if the brackets are attached to the two joint members, they can be attached in a strong and stable state.

  Furthermore, when the handrail is connected straight, the joint is also straight, so there is no discomfort when walking along the handrail.

  1A and 1B are a front view and a bottom view of a handrail joint, and FIG. 4 is an exploded view of the joint. In the figure, reference numeral 1 denotes a joint, and 2 denotes a handrail.

  The joint 1 is composed of four joint members 1a, 1b, 1c, and 1d. Each joint member 1a, 1b, 1c, 1d has a cylindrical member (substantially the same diameter as the handrail) formed with a circular shape at one end and a semispherical shape at the other end, and the hemispherical side is vertically divided from the middle. By cutting along a plane perpendicular to the axial center, a notched portion comprising a plane 3 passing through the axial center and a plane 4 perpendicular to the plane is formed, and one side is a circular portion 5 having a circular cross section, The other side portion is a semicircular portion 6 having a semicircular cross section.

  The four joint members 1 a, 1 b, 1 c, and 1 d are connected side by side in the axial direction, but the two joint members 1 b and 1 c located at the center are abutted at the circular portion 5. A convex portion 7 having a cylindrical section is formed on the abutting side of one joint member 1b, and a concave portion 8 is formed on the abutting side of the other joint member 1c. A V-shaped engagement groove 9 is formed on the peripheral surface of the convex portion 7, and a screw pin hole 10 is formed in the concave portion 8 at a relative position corresponding to the engagement groove 9. Further, a V-shaped engagement groove 11 is formed on the peripheral surface of the circular portion 5.

  Further, on the plane along the axis of the outer joint member 1a, 1b, 1c, 1d, the first axis perpendicular to the plane is at a position where the axis and the diameter of the semicircular end of the plane 3 intersect. Two screw holes 12 are formed. Furthermore, attachment holes 13 for connecting fittings are formed on the end surfaces of the circular portions 5 of the outer joint members 1a and 1d. This mounting hole 13 is formed in an octagon.

  Next, the other convex portion 7 is fitted into one concave portion 8 of the two joint members 1a, 1b, 1c, and 1d, and the screw pin 23 is screwed from the screw pin hole 10 as shown in FIG. Engage with the engaging groove 9 of the portion 7. As a result, the two joint members 1b and 1c can rotate around the axis. Next, the two joint members 1b and 1c and the outer joint members 1a and 1d are abutted with each other at the plane portion of the semicircular portion 6, and screws 14 are inserted into the screw holes 12 perpendicular to the plane 3. They are screwed together and are rotatably connected around the axis of the screw 14. In this case, since the tips of the joint members 1a, 1b, 1c, and 1d are formed in a hemispherical shape, the joint member can be smoothly rotated around the screw shaft.

  The handrail 2 is formed of an extruded mold material of metal or synthetic resin. As shown in FIG. 3, the lower part is opened, and a U-shaped groove 15 is formed on the inner side from the opening edge. A cap 16 having substantially the same length as that of the handrail 2 is attached to the groove portion. The inner space of the handrail 2 is formed in such a size that the connecting fitting 17 fits.

  Next, when the handrail 2 is connected via the joint 1, first, the connection fitting 17 is fitted into the mounting hole 13 of the outer joint member 1 a, 1 d and fixed with the screw 18. The protruding mounting portion 13 is fitted inside the handrail 2 and fixed with a screw 19. Finally, the cap 16 may be engaged with the opening.

  Of the four joint members 1a, 1b, 1c and 1d, the two joint members 1b and 1c at the center are rotatable around the axis, and the two joint members 1a and 1d connected to the outside are The two joint members 1b and 1c at the center are rotatably connected around an axis orthogonal to the plane portion, so that the outer joints as shown by arrows a and b in FIG. The members 1a and 1d can be freely bent in any direction. Therefore, by connecting the handrail 2 to the outer joint members 1a and 1d, the handrail 2 can be finely adjusted in any direction and bent freely. Therefore, as shown in FIG. 6, even if the handrail 2 to be connected at the site to be installed bends sideways or continues upward or downward, and the angle is large or small, The handrail 2 can be finely adjusted and connected freely according to the situation. In FIG. 6, reference numeral 20 denotes a support.

  In addition, since the joint members 1a, 1b, 1c, and 1d are originally formed in a columnar shape, when the four joint members 1a, 1b, 1c, and 1d are aligned in the straight direction, the whole is the handrail 2. Since it is formed in a cylindrical shape having substantially the same diameter, even when the joint 1 appears outside the handrail 2 as shown in FIG.

  Furthermore, when connecting the handrail 2 straight, since the joint 1 is also straight, there is no discomfort when walking along the handrail.

  Next, as shown in FIGS. 7, 8, and 9, in addition to the four joint members 1a, 1b, 1c, and 1d described above, the two joint members 1a, 1b, 1c, and 1d at the center are provided. By adopting a configuration in which the butted circular portion 5 is supported by the bracket 21, the support column 20 can be raised at the corner portion of the handrail 2.

  That is, the bracket 21 is composed of a short cylindrical encircling portion 21a capable of rotatably encircling the circular portion 5 of the joint members 1b and 1c, and a support portion 21b projecting from the encircling portion 21a. The screw pin 23 is screwed from the screw pin hole 22 provided at a position corresponding to the engagement groove 11 formed in the circular portion 5 of the two joint members 1b and 1c at the center, and the tip is engaged with the above-mentioned engagement. The groove 11 is engaged. Thereby, the bracket 21 can freely rotate around the axis of the joint 1.

  The support portion 21 b is formed in a prismatic shape, and the support portion 21 b may be fitted into the mounting groove 24 formed at the upper end of the support column 20 and fixed with the bolt 25.

  According to the said structure, as FIG. 10 shows, the support | pillar can be stood by the bracket 21 same as a straight part also in the corner part of the handrail 2. As shown in FIG.

  In addition, since the angle of the joint 1 is not limited by the surrounding portion 21a, it can correspond to the handrail 2 of any direction and angle. Moreover, since the shaft centers of the two joint members 1b and 1c at the center are always coaxial, if the bracket 21 is attached to the two joint members, the joint members 1b and 1c can be attached in a strong and stable state.

  When it is composed of four joint members and these are aligned in the straight direction, the whole is preferably formed in a cylindrical shape having substantially the same diameter as the handrail.

(A) and (b) are a front view and a bottom view of the joint 1 with the handrail 2 attached. Sectional drawing on the XX line of Fig.1 (a) Sectional drawing on the YY line of Fig.1 (a) Exploded view of fitting 1 The front view which shows the rotation aspect of the coupling 1 The top view of the state which attached the handrail 2 via the coupling 1 Exploded view of another embodiment Front view of main parts with handrail 2 and support attached Sectional drawing of a part on the ZZ line of FIG. Side view with handrail 2 attached via joint

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Joint 1a, 1b, 1c, 1d Joint member 2 Handrail 5 Circular part 6 Semicircular part

Claims (2)

  A joint for handrails composed of four joint members, each of which has four joint members in the axial direction, each of which has a circular part with a circular cross section on one side and a semicircular part with a semicircular cross section on the other side part. The two joint members in the center are abutted at the circular portion and are connected so as to be rotatable around the axis of both circular portions. The two joint members and the joint member on the outer side thereof are semicircular. A handrail joint characterized in that it is abutted at a flat portion and is rotatably connected around an axis perpendicular to the flat portion. The end portion of the handrail is connected to the circular portion of the joint member at both ends, and when the four joint members are aligned in a straight direction, the whole is formed in a cylindrical shape having substantially the same diameter as the handrail. The handrail joint according to 1.

Images