JP3142807B2 - Fitting 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 joint structure of a handrail for a building, and more particularly to a joint structure used for a bent portion of a handrail made of wood, metal or plastic such as a stair of a building. It is.

[0002]

2. Description of the Related Art Conventionally, when a wooden or metal handrail such as a staircase is constructed, it is necessary to bend a handrail member forming the main body of the handrail at an intermediate stage or the like. In this case, the bent portion of the handrail member is deformed, cut, and connected in accordance with the site, but the deformation, cutting, and connection processing requires considerable skill and is time-consuming and troublesome.

[0003]

Therefore, it has been proposed to carry out the above-mentioned deformation and cutting at a factory in advance. In this case, however, the bending portion must be adjusted in accordance with the design conditions, especially the difference in the steepness of the stairs. Changes, it is necessary to individually deform and cut, and furthermore, it is necessary to perform a delicate readjustment at the time of site adjustment.

The present invention has been made based on the above circumstances, and an object of the present invention is to adjust a bent portion of a handrail member at the site regardless of design conditions such as a difference in a stair gradient. An object of the present invention is to provide a joint structure that can be easily configured.

[0005]

For this reason, in the joint structure of the present invention, as is apparent from the illustrated embodiment, the joint is separated by a plane passing through the center line of the sphere, and the separated surfaces are palmed together. Hemispherical universal joints 5 rotatably connected to each other
A and a pair of joint members 5A and 6A having a pair A and 6A, and a pair of joint members 5A and 6A rotatably connected to each other at a center line of the sphere in a direction orthogonal to the separation surface. Connecting shaft portions 5B, 6B integrally formed in the diametrical direction on opposing surfaces of the joint portions 5A, 6A, and the two-sided joint portion 5 along the center line of the sphere passing through the separation surface;
A, a joint shaft portion 5 integrally formed on the outer surface of 6A.
C, 6C, and the two connecting shaft portions 5B, 6B are
A shaft and a shaft hole into which the shaft is rotatably inserted are characterized.

[0006] The joint members 5, 6 have a connecting shaft portion 5 having a shaft and a shaft hole whose leading ends are rotatably fitted to the opposing surfaces of the hemispherical universal joint portions 5A, 6A.
B and 6B are integrally formed, and a reinforcing pin 7 can be inserted into the inner space of both connecting shaft portions 5B and 6B along the center line thereof in a state of being continuous with both connecting shaft portions 5B and 6B. .

The universal joints 5A, 6A, the connecting shafts 5B, 6B and the joint shaft 5 constituting the main body of the joint members 5, 6 are formed.
C and 6C are formed by integral molding of plastic,
The distal ends of the two connecting shaft portions 5B and 6B are fitted by elasticity of plastic and are rotatable about an axis. The pins 7 are made of metal or hard plastic.

In order to form the bent portion of the handrail by using the above joint structure, the joint shaft portions 5C and 6C are provided with
At least one of the cylindrical connecting bodies 8, 9 is extrapolated and connected in a state where at least one of them is rotatable in the outer peripheral direction. The handrail is formed by inserting and connecting the tip of the second part or the tip of the extension thereof. The two joint shafts 5C, 6C and the two connecting bodies 8, 9
They may be fixed or integrally formed so as not to rotate with each other.

In the joint structure portion of the handrail, the joint members 5 and 6 rotate 360 degrees (actually 270 degrees in consideration of the interference between the end portions of the handrail members 1 and 1) in the direction of the separation surface, and all bending of the handrail is performed. It can bend along the direction of the part. In such a configuration, unlike the conventional structure, the handrail members 1 and 1 are connected via the joint members 5 and 6 in a manner in which the angles can be freely changed. However, it is adaptable, and the on-site work is simple and requires no skill, and fine adjustment on-site is easy.

[0010]

1 to 5 show a joint structure according to a first embodiment of the present invention. As shown in FIG. 1, this joint structure is used as a joint structure of a bent portion of a handrail provided along both sides of a passage such as a stairway of a building. Thus, this joint structure has a joint member 5, which is joined to the front end of the connecting portion of the handrail members 1, 1 via the joints 8, 9.
6.

The pair of joint members 5, 6 are spherical as a whole, are separated by a plane passing through the center line of the sphere, and are hemispherically connected to each other so as to be rotatable to each other with the separated surfaces being palmed. And the universal joints 5A, 6A at the center line of the sphere in a direction perpendicular to the separating surface.
A and the other connecting shaft portions 5 each formed of a shaft and a shaft hole integrally formed in a diametrical direction on opposing surfaces of the two universal joint portions 5A and 6A so as to rotatably connect each other.
B, 6B, and joint shafts 5C, 6C integrally formed on the outer surfaces of the universal joints 5A, 6A along the center line of the sphere passing through the separation surface. For example, it is integrally formed of a somewhat elastic hard plastic. One joint shaft 5C protrudes from the outer end of one universal joint 5A, and the other joint shaft 6C protrudes from the outer end of the other universal joint 6A.

At the outer edge of the separation surface of the universal joints 5A and 6A, there is formed an engagement step portion 11 having an uneven surface for guiding rotation in the outer peripheral direction and preventing engagement in the surface direction. ing.

The two connecting shafts 5B and 6B are cylindrical members formed integrally and diametrically on the opposing surfaces of the hemispherical universal joints 5A and 6A, and the distal ends constitute shafts. The distal end shaft of one connecting shaft portion 5B made of a small-diameter cylindrical body is rotated into the distal end step portion 6D expanded to a larger diameter by one step inside the other connecting shaft portion 6B made of a larger-diameter cylindrical body. It is freely inserted. The end step 6D forms a shaft hole. Also,
In the inner space of both connecting shaft portions 5B, 6B, there are two connecting shaft portions 5B, 6B.
A metal pin 7 for reinforcement can be inserted continuously to B. One of the two connecting shaft portions 5B and 6B may be formed in a cylindrical shape and the other in a rod-shape, and may be rotatably inserted into each other. The pin 7 can be omitted.

The left and right joined bodies 8 and 9 are connected to outer cylinders 8A and 9
A, inner cylinders 8B and 9B forming a boss portion are formed in a double cylindrical shape, and outer cylinders 8A and 9A and inner cylinders 8B and 9 are formed on inner end surfaces.
B is formed so as to be integrally continuous with the end plates 8C and 9C. In the inner cylinders 8B, 9B of the left and right joined bodies 8, 9, left and right joint shafts 5C of the pair of joint members 5, 6,
6C is rotatably inserted. The retaining ridges 12 and the grooves 1 which are rotatably engaged with the inner cylinders 8B, 9B and the joint shafts 5C, 6C along the outer peripheral direction so as to be rotatable along the outer peripheral direction.
3 are formed. End plates 8C, 9 of the joined bodies 8, 9
C is formed in a concave spherical shape so that the joined bodies 8 and 9 slide and rotate along the spherical surfaces of the joint members 5 and 6.

Outer cylinders 8A, 9A of the left and right joined bodies 8, 9
Has an outer end extending outward beyond the other ends of the inner cylinders 8B and 9B, and has an inner end in which the connecting portions of the handrail members 1 and 1 are connected until the outer ends of the inner cylinders 8B and 9B are hit. The tip is inserted and fixed. In the first embodiment, the inner circumferences of the outer cylinders 8A and 9A and the end portions of the handrail members 1 and 1 are fixed by bonding.
The outer end openings of the inner cylinders 8B and 9B are closed by caps 14, and the adhesive is connected to the inner cylinders 8B and 9B and the joint shaft 5 by the adhesive.
C and 6C are prevented from entering the rotating surface.

In the joint structure according to the first embodiment, the universal joint portions 5A and 6A of the joint members 5 and 6 are caused to slide 360 degrees (interference between members) by sliding the engagement step 11 along the separation surface. In consideration of the above, the tip of the handrail members 1 and 1 are integrated with the joints 8 and 9 and the joint shaft 5C of the inner cylinders 8B and 9B and the joint members 5 and 6 are joined together. , 6C is rotated by 360 degrees in a direction crossing the separation surface. Therefore, the handrail members 1 and 1 can be bent along the directions of all bent portions.
In addition, even when the joined bodies 8 and 9 and the joint members 5 and 6 are integrally fixed or molded, the handrail members 1 and 1 can be bent along any bent portions.

FIG. 6 shows a joint structure according to a second embodiment of the present invention. In the joint structure of the second embodiment, the joint members of the first embodiment are formed of hollow hemispherical members, whereas the joint members 105 and 106 are formed of solid hemispherical members. Also, the joint member 10
In order for the connecting shafts 5 and 106 to be rotatably connected on the separation surface, one connecting shaft portion 105B formed on the center axis is connected to a cylindrical shaft, and the other connecting shaft portion 106B is connected to the one connecting shaft. The distal end of the portion 105B is formed by a shaft hole into which the shaft is inserted, and the distal end of the hole of the other connecting shaft portion 106B is a large-diameter distal end portion 106D, which is a shaft hole into which the shaft is rotatably inserted. One and other connecting shaft portions 105B, 106B
The above-described pins may be inserted into the inner space on the center axis of the, or the pins may be omitted.

FIG. 7 shows a joint structure according to a third embodiment of the present invention. In the third embodiment, the outer cylinders 8A and 9A of the joined bodies 8 and 9 are joined to the joining arm members 3 and 4 by fasteners 15 using screws.

FIG. 8 shows a joint structure according to a fourth embodiment of the present invention. In the fourth embodiment, the joining arms 3 and 4 are joined to the joining arms 3 and 4 via the disk-shaped stopper plates 16 that are fitted and fixed in the inner spaces of the outer ends of the outer cylinders 8A and 9A of the joining bodies 8 and 9. The bodies 8 and 9 are detachably connected. First, the stopper plate 16 and the end faces of the joint arm members 3 and 4 are connected and fixed by a fixture 18 made of a wood screw. Next, a locking groove 16B formed on the outer periphery of the head 16A protruding from the inner surface at the center of the stopper plate 16,
By inserting and engaging the tip of a locking tool 17 made of a screw tool inserted from the outside of the outer cylinders 8A and 9A, the stop plate 16
Are fixed to the outer cylinders 8A, 9A of the joined bodies 8, 9. 19
Is a nut tool fixed in the joined bodies 8 and 9, and the locking tool 17 made of the screw tool is screwed into the nut tool.

In the second, third, and fourth embodiments, portions common to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0021]

As described in detail above, the present invention has a pair of a handrail member having a tip end portion or an extended portion thereof and a hemispherical universal joint portion separated by a plane passing through the center line of the sphere. A joint member, and a connecting shaft portion that rotatably connects the two universal joint portions to each other at a center line of the sphere in a direction orthogonal to the separation surface, and at least one of the joint members is connected. It is joined to the tip of the handrail member in a freely rotatable state through the body or in an integrally fixed state. Therefore, unlike the conventional structure, the bent portion of the handrail member is connected via a joint member in a manner that allows the angle of the handrail member to be freely changed. In addition, work on site is simple and requires no skill, and fine adjustment on site is easy.

A pair of joint members that rotate 360 degrees from each other are separated by a plane passing through the center line of the sphere, and the separated surfaces are palmed and connected to each other so as to be rotatable with each other. A diametrically integral part of each of the universal joints so as to rotatably connect the universal joints to each other at a center line of the sphere in a direction orthogonal to the separation surface. Since the shaft and the connecting shaft portion having a shaft hole rotatably inserted in the axial direction are integrally formed, and are rotatable by the separation surface, the shaft and the shaft hole, The rotation operation is reliable and stable, there is no backlash, the number of parts is small, and assembly is easy.

Further, if a pin is inserted into the center hole of the connecting shaft portion forming the shaft and the shaft hole, the rotation operation is more stable and the structure is robust.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a construction example of a handrail structure of a building using a joint structure according to Embodiment 1 of the present invention.

FIG. 2 is a front view of a main part of the joint structure.

FIG. 3 is also a cross-sectional plan view.

FIG. 4 is also a longitudinal sectional view.

FIG. 5 is also an exploded view.

FIG. 6 is an exploded view of a main part of a joint structure according to Embodiment 2 of the present invention.

FIG. 7 is a longitudinal sectional view of a main part of a joint structure according to Embodiment 3 of the present invention.

FIG. 8 is a longitudinal sectional view of a main part of a joint structure according to Embodiment 4 of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handrail member 5, 6, 105, 106 Joint member 5A, 6A Joint part 5B, 6B, 105B, 106B Connecting shaft part 5C, 6C Joining shaft part 6D, 106D Step part as a shaft hole 7 Pin 8, 9 Connector 8A, 9A Outer tube 8B, 9B Inner tube 8C, 9C End plate 11 Engagement step 12 Protrusion 13 Groove 14 Cap 15 Stopper 16 Stopper plate 16A Head 16B Locking groove 17 Locking member 18 Fixing member 19 Nut Ingredient

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 56-88841 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F16H 11/04-11/10

Claims (3)

(57) [Claims] 1. A pair of joint members having a hemispherical universal joint portion which is separated by a plane passing through a center line of a sphere and which is rotatably connected to each other with the separated surfaces being palmed together, and the separation surface A center line of the sphere in a direction orthogonal to the diametrically formed, diametrically integrally formed on each opposing surface of the two universal joints so as to rotatably connect the two universal joints to each other,
A connecting shaft portion having a shaft and a shaft hole rotatably inserted in the axial direction and an outer surface of the universal joint portion formed along the center line of the sphere passing through the separation surface and integrally formed to protrude therefrom; And a joint shaft portion. 2. The connecting shaft portion is formed by a shaft hole in which one is a shaft and the other is inserted into the shaft, and both connecting holes are formed in a central portion of the shaft and the inside of the shaft hole. 2. A continuous pin is inserted into the shaft.
Joint structure described in. 3. A tubular connecting body is inserted and connected to the two connecting shafts in a state where at least one of the connecting shafts is rotatable in an outer peripheral direction. 3. The joint structure according to claim 1, wherein ends of the extension portions are connected.