JP3055010B2 - Handrail connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure at a bent portion such as a stair railing or a handrail in a corridor.

[0002]

2. Description of the Related Art FIG. 9 shows an arrangement of handrails on a staircase. The staircase handrail 1 is arranged along the staircase 2, and in the example shown here, the staircase handrail 1 has three linear handrail members 3a, 3a.
b, 3c and two connecting members 4 connecting between them
a and 4b. As the connecting member 4a for the corner portion, a member which bends at 90 ° in a plane position is used, and as the connecting member 4b for the slope portion, an appropriate bending angle (125 to 145) corresponding to the inclination angle (35 to 55 °) of the stairs is used. °).

[0003] The connecting member 4b for the gradient portion in the above,
As shown in FIG. 10, the curved cylindrical member 4 is obtained by being cut at an appropriate position on the spot, and x, y, and
A bend angle that is gradually increased by being cut at the position z is obtained.

[0004]

However, as described above, it takes a great deal of time to cut the member at the correct position at the site so as to obtain a desired bending angle, and in particular, the cut surfaces are connected. It is very difficult to cut the end surface of the handrail member so that it faces directly at the time of connection.
In addition, there is a problem that the connection portion is distorted.

The present invention has been made in view of such a point, and an object of the present invention is to make it possible to easily connect a handrail at a bent portion at an appropriate bent angle with good appearance.

[0006]

In order to attain the above object, according to the first aspect of the present invention, the connecting structure of the handrail has a bent shape as a whole, and a peripheral surface at an end thereof is substantially spherical. A connecting member is formed in a shape, and one end of the connecting member is pivotally mounted at one end thereof, and a connecting rod is swingably attached to the end, and an annular covering portion is provided on a periphery of an end corresponding to the end of the connecting member. And the other end of the connecting rod is connected to the end of the handrail member in a state where the peripheral surface of the end of the connecting member is covered with the annular covering portion.

[0007] According to the above configuration, the connecting member and the handrail member are connected by the connecting rod at an appropriate rotation position,
The connecting member and the handrail member can be connected at an appropriate angle, and
At the time of the connection, the annular covering portion at the end of the handrail member covers the substantially spherical peripheral surface of the end of the connection member, so that there is no gap or step at the connection portion at any angle.

In particular, the inner peripheral surface of the annular cover of the handrail member conforms to the peripheral surface of the end of the connecting member, and the peripheral surface of the end of the connecting member is connected to the inner peripheral surface of the annular cover during connection. With the configuration in which the surfaces are in contact with each other (the invention according to claim 2), the relative displacement between the connecting member and the handrail member during the angle adjustment is made smooth.

[0009] Further, by providing a rotation angle restricting portion for restricting the rotation angle of the connecting rod at the end of the connecting member (the invention according to claim 3), the connecting member, the handrail member and the handrail member are provided. Is maintained within a predetermined angle range, whereby
The annular covering portion reliably covers the substantially spherical peripheral surface of the end portion of the connecting member, thereby reliably preventing a gap or a step from occurring in the connecting portion.

Further, since the annular covering portion is formed on a separate annular covering member attached to the end of the handrail member main body (the invention according to claim 4), it is easy to form the annular covering portion on the handrail member. Can be done.

Further, the annular covering member having the annular covering portion is screwed and connected to a mounting member which is connected and fixed to an end of the handrail member main body (the invention according to claim 5), whereby the handrail member and the connecting member are connected. The connection can be performed by a screwing operation.

Further, in a state in which an annular cover member is screwed and connected to the mounting member, a protrusion for supporting the tip of the connecting rod is provided on the mounting member (the invention according to claim 6), whereby the handrail member is provided. The rattling of the connecting rod in a state where the connecting rod and the connecting member are connected is prevented.

Further, by integrally forming a pivot shaft for coupling to the coupling member on the coupling rod (the invention according to claim 7), a pivot shaft is provided on the base side, and a bearing hole is formed in the coupling rod. The connecting rod can be connected to the base with higher strength than in the case of forming through.

Further, a pair of divided bodies are joined to form a base of the connecting member, and a connecting pin and a connecting hole for fitting the connecting pin are formed on the joint surface of each divided body.
According to the described invention), the base of the connecting member can be assembled by properly connecting the pair of divided bodies without displacement.

Also, at the ends of the pair of divided bodies joined to each other, convex portions are formed on both sides of the dividing line, and retaining rings are fitted to these convex portions so as to prevent separation of the two divided members. With this configuration (the invention according to claim 9), the connecting rod can be easily assembled between the two divided bodies, and the base having the connecting rod can be assembled in advance.

The handrail connecting structure of the present invention is suitably used as a stair handrail connecting structure (the tenth aspect of the present invention).

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a connecting structure of a handrail for stairs, FIG. 2 shows a developed plane thereof, and FIG. 3 shows an exploded construction thereof. The connecting structure of the handrail for stairs here is a portion where the connecting member 4b in the conventional example is used,
That is, the connection structure for the slope portion is illustrated.

Each of 10 is a cylindrical handrail member for stairs connected to each other, and a connecting member 11 is used between them.

The connecting member 11 has a base 14 having a bent shape having a bent angle α (about 145 °) and a peripheral surface 13 at both ends formed into a spherical shape, and one end supported at one end at each end. And a pair of connecting rods 15 rotatably mounted. As shown in FIG. 6, the base body 14 is formed by joining a pair of divided bodies 16 formed in the same shape, and a joining surface of each divided body 16 has a pair of connecting pins 16a. And a pair of connecting holes 16b are formed, and by causing the divided bodies 16 of the same specification to face each other, the connecting pins 16a of the respective divided bodies 16 are fitted into the connecting holes 16b of the opposed divided bodies 16 and the two divided bodies 16 are formed. The shift movement is prevented. In addition, each of the joint surfaces of the divided body 16 is formed with a recessed portion 17 whose end is expanded at both ends, and a bearing hole 18 is provided at the center thereof.

At both ends of each half 16, projections 19 are formed on both sides of the dividing line, and a snap ring 20 is fitted over the outer circumference of these projections 19. ,
The separation of the two halves 16 is prevented.

As shown in FIG. 6, one end of the connecting rod 15 is connected to a flat pivoting portion 15b integrally projecting left and right pivoting shafts 15a. The pivoting portion 15b is divided into two parts. Each of the recesses 17 of the body 16 is engaged with the corresponding pivot shaft 15.
By connecting the two divided bodies 16 in a state in which a is inserted into the bearing hole 18, the connecting member 11 equipped with the connecting rod 15 swingably around the axis P of the pivot shaft 15 a is configured. At this time, the swing range of the connecting rod 15 is the range of the angle θ at which the recess 17 expands.

An annular covering member 21 is attached to both ends of the base 14 on which the connecting rod 15 is swingably mounted as described above. At one end of the annular covering member 21, an annular covering portion 23 having an inner peripheral surface 22 having a spherical shape matching the spherical shape of the base 16 is integrally provided, and at an inner portion of the inner peripheral surface 22. A partition wall 25 having a through hole 24 is provided at a center position, and a screw portion 26 is formed on the inner periphery on the other end side.

The annular covering member 21 is previously assembled to the base 14 of the connecting member 11. As shown in FIG. 5, the end of the base 14 to which the connecting rod 15 is mounted is attached to the base 14 of the base 14. The annular cover member 21 is fitted so that the inner peripheral surface 22 is in surface contact with the peripheral portion 13, and the end of the connecting rod 15 is penetrated through the through-hole 24. A snap ring 28 such as a snap fit is mounted. Thus, the annular covering member 21 is attached to the end of the connecting member 11 so as to be swingable around the axis P and rotatable about the connecting rod 15.

At each end of the handrail member 10, a mounting member 30 for connecting the annular covering member 21 and the handrail member 10 is mounted. As shown in FIG. 7, on the connecting portion side of the attachment member 30, a cylindrical portion 3 provided with a screw portion 31 on an outer peripheral surface thereof to be screwed with the screw portion 26 of the annular covering member 21.
2 is provided, and a projection 33 protruding toward the connecting portion is provided at the center thereof, and a shallow concave portion 34 for positioning and fitting the handrail member main body 28 is formed on the side opposite to the connecting portion. It is fixed to the end face of the screw 35 by screws 36.

When the handrail member 10 and the connecting member 11 are connected to each other, the handrail member 10 and the connecting member 11 are connected in a state where the annular covering members 21 are attached to both ends of the connecting member 11 in advance.
As shown in FIG. 5, the annular cover member 21 attached to the end of the connecting member 11 is externally fitted to the attaching member 30 connected to the end of the handrail member main body 28 and is rotated, whereby the attaching member 30 is rotated.
The screw portion 26 of the annular covering member 21 is screwed into the screw portion 31 of the handrail member 10 and the handrail member 10 and the connecting member 11 are connected. In this case, the peripheral surface 13 of the base 14 and the inner peripheral surface 22 of the annular covering member 21 are in close contact with each other, and the distal end of the connecting rod 15 abuts on the projection 33 of the mounting member 30 so that the connecting rod 15 extends in the axial direction. The rattle is prevented.

In the connection configuration, the two handrail members 10 are connected to the connection member 11 at a bending angle α (14).
5 °), and the bending angle of the connection angle between the connection member 11 and each handrail member 10 is adjusted appropriately within the range of the angle θ at which the connection rod 15 expands the recess 17. Thus, as shown in FIGS. 3A and 3B, the angle can be adjusted to α _{1 to} α ₂ (125 ° to 165 °), whereby the embodiment has a staircase inclination of 1 step.
It can be used in steps of 5 ° to 55 °.

Further, the peripheral surface 1 is formed into a substantially spherical shape at both ends of the base 14 by using the annular covering member 21.
Since the connecting member 3 is covered, no matter what angle the connecting member 11 and the handrail member 10 are adjusted to, the connecting portion has a good appearance without any gaps or steps.

Further, when the connection angle between the connecting member 11 and the handrail member 10 is adjusted, the adjustment angle is regulated by the concave portion 17 provided in each of the divided bodies 16, so that the adjustment work is stable. And can do it,
The peripheral surface 1 formed into a substantially spherical shape by the annular covering member 23 by being adjusted within the regulated adjustment angle.
The cover function of No. 3 is surely fulfilled.

Further, when adjusting the connecting angle between the connecting member 11 and the handrail member 10, the inner peripheral surface 32 of the annular covering member 23 is adjusted.
Is formed into a spherical shape that matches the spherical shape of the peripheral surface 13 at both ends of the base 16 of the connecting member 11 so that the respective surfaces are in surface contact, so that the relative movement between the connecting member 11 and the handrail member 10 is smooth. Can be.

FIG. 8 shows a connection structure of a handrail for stairs in a portion where the connection member 4b of the conventional example is used.
This connecting structure is basically the same as the connecting structure in the above-described slope portion, and the two handrail members 10 are formed by bending the connecting members 11 at the bending angles β _{1 to} β ₂ (90 ° to 125 °).
The basic bending angle of the base body 14 is set so that the angle can be adjusted to (°). Note that common members are denoted by the same reference numerals and description thereof is omitted.

The present invention can be embodied in the following modes.

A pivot 15 a provided on the connecting rod 15
Is formed as a separate member, and is fixed to the flat portion 15b.

The connecting rod 15 is swingably connected by a pivot provided on the base 14 side.

The mounting member 30 is driven and fixed to an end of the handrail member main body 36.

[0035]

According to the present invention, it is possible to easily connect the handrail at the bent portion at an appropriate bent angle with good appearance.

In particular, the stair railing can be easily connected at an appropriate bending angle corresponding to the inclination angle of the stairs.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing a handrail connection structure according to an embodiment of the present invention.

FIG. 2 is a partially cutaway plan view showing a handrail connection structure according to the embodiment of the present invention.

FIG. 3 is a partially cutaway side view showing a limit state of bending of the handrail connection structure according to the embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a connecting structure of a handrail according to the embodiment of the present invention.

FIG. 5 is an exploded perspective view of the connecting member according to the embodiment of the present invention, in which some of the members are cut away.

FIG. 6 is an exploded perspective view of a connecting member according to the embodiment of the present invention.

FIG. 7 is a perspective view of members constituting a handrail connection structure according to the embodiment of the present invention.

FIG. 8 is a partially cutaway side view showing a limit state of bending of a handrail connection structure according to another embodiment.

FIG. 9 is a perspective view showing the arrangement of handrails on the stairs.

FIG. 10 is a perspective view of a conventional handrail connecting member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Handrail member 11 Connection member 13 Peripheral surface 15 Connection rod 15a Pivot shaft 14 Base 16 Split body 16a Connection pin 16b Connection hole 18 Bearing hole 19 Convex part 20 Retaining ring 21 Annular covering member 22 Inner peripheral surface 23 Annular covering part 30 Mounting Member 33 Projection 35 Handrail member body

Continuation of the front page (56) References JP-A-9-317115 (JP, A) JP-A-63-83325 (JP, A) JP-A-5-35940 (JP, U) (58) Fields investigated (Int .Cl. ⁷ , DB name) E04F 11/18

Claims (10)

(57) [Claims] 1. A connecting member having a bent shape as a whole, a peripheral surface at an end thereof being formed in a substantially spherical shape, and a connecting rod pivotally mounted at one end thereof at the end so as to be swingable. And a handrail member provided with an annular covering portion on the periphery of an end portion corresponding to the end portion of the connecting member, wherein the peripheral surface of the end portion of the connecting member is covered with the annular covering portion, A handrail connecting structure in which the other end of the connecting rod is connected to an end of the handrail member. 2. The shape of the inner peripheral surface of the annular covering portion of the handrail member conforms to the shape of the peripheral surface of the end portion of the connecting member, and at the time of the connection, the peripheral surface of the end portion of the connecting member is formed inside the annular covering portion. The handrail connection structure according to claim 1, wherein the handrail is in surface contact with the peripheral surface. 3. The handrail connecting structure according to claim 1, wherein a turning angle restricting portion for restricting a turning angle of the connecting rod is provided at an end of the connecting member. 4. The handrail according to claim 1, wherein the annular cover is formed on a separate annular cover member attached to an end of the handrail member main body. Connection structure. 5. An annular covering member having said annular covering portion is screwed and connected to a mounting member which is connected and fixed to an end of a handrail member main body. Handrail connection structure described in 1. 6. A handrail according to claim 5, wherein a projection for supporting and supporting the tip of said connecting rod is provided on said mounting member in a state where an annular covering member is screwed and connected to said mounting member. Connection structure. 7. The connecting rod is integrally formed with a pivot shaft for connecting to the connecting member.
A handrail connection structure according to any one of claims 6 to 13. 8. A pair of divided bodies are joined to form a base of the connecting member, and a connecting pin and a connecting hole for fitting the connecting pin are formed on a joint surface of each of the divided bodies. Item 8. The handrail connection structure according to any one of Items 1 to 7. 9. A pair of divided bodies joined to each other have a projection formed on both ends of a dividing line at both ends thereof, and a snap ring is externally fitted to these projections to prevent the two divided bodies from being separated from each other. 9. The connecting structure for a handrail according to claim 8, wherein the handrail is configured as described above. 10. The handrail connection structure according to claim 1, which is used for a handrail for stairs.