JP2001304284A - Angle universal coupling and connecting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an angle universal coupling capable of reducing costs without limitation to movement of an angular change and a connecting structure capable of improving connecting workability. SOLUTION: Two tubular mounting parts 3a, 3b are formed on a bracket 2, one end parts 4a, 5a of elastic spiral springs 4, 5 are fastened and provided inside of each of the tubular mounting parts 3a, 3b by projecting the other end parts 4b, 5b from the tubular mounting parts 3a, 3b, and the projected end parts function as connecting parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an angle-free joint used for connecting, for example, a handrail or a fence, and a connection structure thereof.

[0002]

2. Description of the Related Art When connecting two pipe members at a place where the angle changes when a handrail is provided on a staircase, conventionally, a joint whose both ends are bent at a predetermined angle is prepared in advance. The two pipe members are inclined and attached at an angle corresponding to the joint, and a joint is arranged and connected between the two pipe members.

[0003] When two pipe members are connected in this way, there is a problem that the connecting operation becomes difficult if the angle of both ends of the prepared joint is different from the inclination of the two pipe members.

[0004] In order to easily connect the two pipe members regardless of the degree of inclination of the two pipe members, the use of the following conventional angle joints has been practiced or studied. .

[0005] As a first conventional angle-free joint, as shown in FIG. 9, a joint is divided into two parts, and a sphere 102 is connected to one side 100 of the divided joint by a connecting piece 101.
And the other split joint 103 is provided with a concave portion 104 for receiving the spherical body 102 at an angle.

As a second conventional angle adjustable joint, as shown in FIG. 10, a convex portion 112 is provided on one of the same angular divided joints 110, and a concave portion 113 is formed on the other angular divided joint 111. And the projection 112 and the recess 113 are connected by a cross-shaped joint 114 so that the two joints 110 and 111 can change their angles in directions different from each other by 90 °.

[0007] As a third conventional angle adjustable joint, as shown in FIG. 11, both divided joints 1 similarly divided.
20 and 121 are provided with concave portions 122 and 123, respectively, and a connecting member 124 provided with projecting pieces 125 and 126 between both split joints 120 and 121 so that the projecting pieces 125 and 126 are different from each other by 90 °. , 126 into recess 12
2 and 123, one protruding piece 125 and one split joint 120 are connected by a pin 127, and the other protruding piece 126 and the other split joint 121 are connected by a pin 128. The joints 120 and 121 can be rotated about pins which differ by 90 degrees.

[0008]

However, in the first angle adjustable joint described above, the angle change is caused by the presence of the connecting piece 101 or the distance between the opposed end faces of the two joints 100 and 103. Substantially the part to be done interferes, which limits the movement of the angle change. In the second angle joint, the joint 11
There is a limit to the movement of the angle change due to the shape of 4. In the third angle joint, two pins 127, 1
The movement of the angle change is limited depending on the direction of 28. Therefore, there is room for improvement in connection workability in the first to third angle-free joints. In addition, the first to third angled joints have a disadvantage in that the processing and assembly are complicated and the cost is high.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems of the prior art, and there is no limitation on the movement of the angle change, and it is possible to improve the angle adjustable joint which can reduce the cost and the workability of connection. It is intended to provide a connection structure.

[0010]

According to a first aspect of the present invention, there is provided an angle adjustable joint, wherein two tubular mounting portions are formed on a bracket, and one end of an elastic helical spring has the other end inside each tubular mounting portion. It is characterized in that it is fixed so as to protrude from the tubular mounting portion, and its protruding end functions as a connecting portion.

[0011] In this angular joint, a connecting member such as a pipe material is connected to each connecting portion, but since the connecting portion is formed of an elastic helical spring, it can be bent at an arbitrary angle in any direction. Therefore, there is no restriction on the movement of the angle change, and the members to be connected can be connected, and the processing and assembly can be facilitated, so that the cost can be reduced.

According to a second aspect of the present invention, in the angle adjustable joint, a through-hole is formed in the bracket, and the middle of the elastic helical spring is fixed inside the through-hole by projecting both ends from the through-hole. The protruding end portion functions as a connecting portion.

[0013] Also in this angle universal joint, claim 1
Has the same action as the angle-free joint, the movement of the angle change is not restricted, and the materials to be connected can be connected, and the processing and assembly can be facilitated, so that the cost can be reduced.

According to a third aspect of the present invention, the intermediate portion of the elastic helical spring is larger than both end portions thereof, and both end portions function as connecting portions. It is characterized by.

[0015] Also in this angle universal joint, claim 1
Has the same effect as the angle universal joint, the movement of the angle change is not restricted, and the materials to be connected can be connected, and the processing can be facilitated, so that the cost can be reduced.

The connecting structure according to claim 4 of the present invention is as defined in claim 1.
And a rod-like member connected to the angle-free joint, wherein at least a connected portion connected to the connection portion is formed in a tubular shape, and A connection member into which the connection portion of the elastic helical spring is inserted inside the connection portion.

In this connection structure, since the connection portion of the angle adjustable joint is formed of an elastic helical spring, it can bend at an arbitrary angle in any direction, so that there is no restriction on the movement of the angle change and the connection target material can be connected. Thus, the connection workability is improved.

In the connecting structure according to a fifth aspect of the present invention, the elastic helical spring is formed in a circular cross section, and a helical groove into which the connecting portion is screwed is formed inside the tubular connected portion of the material to be connected. It is characterized by being.

In this connection structure, the connection portion is easily screwed into the spiral groove so that the material to be connected can be easily connected to the angle-free joint. In addition, the ridge portion protruding inside the spiral groove is provided. Prevents the connecting portion from coming off.

[0020] The connecting structure of claim 6 of the present invention is claim 1.
And a rod-like member connected to the angle-free joint, wherein at least a connected portion connected to the connection portion is formed in a tubular shape, and A connection member having a connection portion inserted thereinto, wherein each of the connection portions is formed in a circular cross section and the helical direction is formed in the opposite direction, and a tubular cover of the connection target material is provided. A spiral groove into which the corner connecting portion is screwed is formed inside the connecting portion.

In this connection structure, the helical directions of the connecting portions on both sides of the angle-free joint are opposite to each other, and the helical grooves provided in the two materials to be connected also correspond to the helical directions of the two connecting portions. Therefore, when the universal joint is rotated, it is possible to simultaneously connect both members to be connected, thereby greatly improving workability.

According to a seventh aspect of the present invention, there is provided the angle-adjustable joint, wherein the connecting portion at the end is inserted into the tubular connected portion provided on the material to be connected by compression deformation, and the rod-shaped elastic material is provided. It is characterized by consisting of.

[0023] In this angle-free joint, since it is made of a rod-shaped elastic material, it can bend at any angle in any direction, so that there is no restriction on the movement of the angle change, and the materials to be connected can be connected. Molding (processing) can be facilitated,
In addition, assembling can be omitted, so that cost can be reduced.

The connecting structure according to claim 8 of the present invention is based on claim 7.
And a rod-shaped connection target material having, at both ends, a tubular connected portion into which connection portions at both ends of the angle free joint are inserted.

In this connection structure, since the angle-free joint is made of an elastic material, it can bend at any angle in any direction, so that there is no restriction on the movement of the angle change, and the materials to be connected can be connected. Will be improved.

[0026]

Embodiments of the present invention will be specifically described below with reference to the drawings. (First Embodiment) FIG. 1 is a front sectional view showing a state in which two handrails, which are objects to be connected, are connected using an angle-free joint according to a first embodiment, and FIG. It is a front view showing the state where two handrails connected by the joint were installed inclining to each other.

This connecting structure has two handrails 10, 11
After being connected by the angle free joint 1, the two handrails 10 and 11 are inclined so as to have a predetermined angle.

In the angle adjustable joint 1, two tubular mounting portions 3 a and 3 b are formed on a bracket 2, and the tubular mounting portion 3
a of the elastic helical spring 4 having a circular cross section inside
Is fixedly provided with the other end 4b protruding from the tubular mounting portion 3a. One end 5a of the elastic helical spring 5 having a circular cross section is fixed inside the tubular mounting portion 3b with the other end 5b projecting from the tubular mounting portion 3b.
b and 5b function as connecting parts. In addition, the tubular mounting part 3
The fixing of the elastic helical springs 4a and 3b is performed by, for example, welding or bonding, depending on the material of both.

On the other hand, the handrails 10 and 11 have the same cross-sectional shape and are made of a round pipe material that is hollow over the entire length, and both ends (only one end is shown) 10a and 11a are connected parts. Helical grooves 10b, 1
1b is formed. The spiral grooves 10b and 11b are
The connecting portion (the other end 4b, 5b) is formed so as to be screwed therein. Specifically, the shape of the spiral grooves 10b and 11b is the same as the outer shape of the elastic spiral springs 4 and 5, and the distance of each part of the spiral grooves 10b and 11b from the axis is the outer shape of the elastic spiral springs 4 and 5. The distance from the axis of each part is almost the same. For example, the distance from the axis of the valleys of the spiral grooves 10b, 11b substantially coincides with the distance from the axis of the external ridges of the elastic spiral springs 4, 5, and the axis of the ridges of the spiral grooves 10b, 11b. The distance from the center is approximately equal to the distance from the axis of the outer valleys of the elastic helical springs 4,5.

Handrails 10 and 1 using the angle joint 1
The connecting operation 1 is performed by connecting a tubular connected portion (end portion) 1 of the handrail 10.
0a, the other end 4b which is a connecting portion of the elastic spiral spring 4
Is inserted by screwing, and the other end 5b, which is the connecting portion of the elastic spiral spring 5, is inserted into the tubular connected portion (end) 11a of the handrail 11 by screwing.

Thereafter, the two handrails 10 and 1 are connected.
One 10 (or 11) is fixed to a predetermined place such as a stair, and then a force is applied to the other handrail 11 (or 10) so as to be inclined at a predetermined angle with respect to one handrail (FIG. 2).
Reference), and fix the other handrail 11 (or 10) at a predetermined location. At this time, some of the elastic helical springs 4 and 5 include:
The curved portions 4c and 5c are generated. When the bend allowance of the elastic helical springs 4 and 5 is insufficient, the distances L1 and L2 between the angle-free joint 1 and the handrail 10 or 11 are set as follows.
For example, the handrail 10 or 11 may be rotated and adjusted in a desired direction (see FIG. 1).

In the angle universal joint 1 of the first embodiment, since the connecting portion of the angle universal joint 1 is formed by the elastic helical springs 4 and 5, it can be bent at any angle in any direction.
The movement of the angle change is not limited and can be connected to the handrails 10 and 11, and the processing and assembly can be facilitated, so that the cost can be reduced. In the connection structure of the first embodiment, as described above, the connection portion of the angle-free joint 1 is made of the elastic helical springs 4 and 5 and bends at any angle in any direction. There are no restrictions on handrails 10,
11 can be connected, so that the connection workability can be improved. In addition, the presence of the ridges of the spiral grooves 10b and 11b prevents the angle free joint 1 from easily coming off.

Although the two tubular mounting portions 3a and 3b are formed on the bracket 2 as the angle adjustable joint 1 of the first embodiment, the present invention is not limited to this, and as shown in FIG. The midway 6a of the elastic helical spring 6 may be formed as an angled joint 1 'fixed to the bracket 2' having the 2a 'so that both ends 6b and 6c protrude from the through hole 2a' by, for example, welding or bonding. . The same effect as that of the angle universal joint of the first embodiment can be obtained with the angle universal joint 1 ', and the connection structure using the angle universal joint of the first embodiment can also be obtained. Needless to say, the same effect as described above can be obtained.

In the first embodiment, the angle joint 1
Elastic spiral springs 4 and 5 (see FIG. 1)
Although the helical directions are mounted so as to be in the same direction, the present invention is not limited to this, and the helical directions may be reversed as shown in FIG. Specifically, the elastic spiral spring 5 ′ is wound in the opposite direction to the elastic spiral spring 4, and
An angle-free joint 1 'in which a spiral groove 11b' is formed in the opposite direction to b can be used. When the angle universal joint 1 'is used, when the angle universal joint 1' is rotated in one direction, the two handrails 10, 11
Can be connected at the same time, so that workability is greatly improved. (Second Embodiment) FIG. 5 is a front cross-sectional view showing a state in which two handrails, which are objects to be connected, are connected using an angle-free joint according to a second embodiment, and FIG. It is a front sectional view showing the state where two handrails connected by the joint were inclined and installed.

This connecting structure has two handrails 30, 31.
Are connected by the angle adjustable joint 21, and the two handrails 30 and 31 are inclined so as to have a predetermined angle.

The angle adjustable joint 21 is formed by spirally winding an elastic spring 22 having a rectangular section, for example, a square section, and processing both ends of the elastic spring 22.
a is larger than both ends 22b and 22c. Specifically, the central portion 22a and both end portions 22b, 2
2c is concentric, the outer diameters of both ends 22b and 22c are the same, and the outer diameter of the central portion 22a is
b, 22c are longer than the outer diameter. Also, both ends 22b, 2
2c functions as a connecting portion.

On the other hand, the handrails 30 and 31 are made of a round pipe material having the same cross-sectional shape and having a hollow shape over the entire length, and have both ends (only one end is shown) 30a, 31a.
Are connected portions, and the inner surface thereof is a smooth surface. The inner diameter of both ends 30a, 31a is
c is almost the same as the outer diameter. The central part 22a
The dimensional difference between the radius up to the outer surface and the radius up to the outer surface of both ends 22b and 22c is substantially adjusted to the thickness of the handrails 30 and 31.

A handrail 30 using the angled joint 21;
The connecting operation of 31 is performed by connecting the tubular hand-held portion (end portion) of the handrail 30.
The end 22b is inserted and fixed inside 30a. Also, the end 2 is provided inside the tubular connected portion (end) 31 a of the handrail 11.
2c is inserted and fixed. These fixings are performed by, for example, welding or bonding according to the material of both.

Thereafter, the two handrails 30 and 3 are connected.
One 30 (or 31) is fixed to a predetermined place such as a staircase, and then a force is applied to the other handrail 31 (or 30) so as to be inclined at a predetermined angle with respect to the one handrail 30 (or 31). (See FIG. 6), and fix the other handrail 31 (or 30) at a predetermined position. At this time, a curved portion 22d is formed in the central portion 22a of the angle-free joint 21.

In the angle universal joint 21 of the second embodiment, since the angle universal joint 21 is formed by spirally winding an elastic spring 22, it can be bent at any angle in any direction. There are no restrictions on the movement of the handrail 30,
31 and the processing can be facilitated, so that the cost can be reduced. Further, in the connection structure of the second embodiment, as described above, since the angle-free joint 21 bends at an arbitrary angle in any direction, the handrails 30 and 31 can be connected without any limitation on the movement of the angle change. Therefore, the connection workability can be improved.

Although the cross-sectional shape of the connecting portion and the cross-sectional shape of the connected portion of the handrail are circular in the second embodiment, the present invention is not limited to this. Any other shape, such as a triangle, star, etc., can also be used. (Third Embodiment) FIG. 7 is a front sectional view showing a state where two handrails to be connected are connected by using an angle adjustable joint according to a third embodiment, and FIG. It is a front view showing the state where two handrails connected by the joint were installed inclining to each other.

This connecting structure has two handrails 50, 51.
Are connected by an angled joint 41, the two handrails 50 and 51 are inclined so as to have a predetermined angle.

The angled joint 41 is, for example, a round bar made of relatively hard rubber, and has an outer surface formed with irregularities over its entire length.
Functions as a connecting portion.

On the other hand, the handrails 50 and 51 are made of a round pipe material having the same cross-sectional shape and hollow over the entire length, and have both ends (only one end is shown) 50a, 51a.
Are connected portions, and irregularities are formed on their inner surfaces. Note that the outer diameter of the handrails 50 and 51 is set to a size that substantially matches the outer diameter of the angled universal joint 41.

A handrail 50 using an angle-free joint 41,
The connecting operation of 51 is performed by connecting the tubular hand-held portion of the handrail 50 (end portion).
The end 41a is compressed and deformed into the inside of 50a and inserted, for example, fixed by bonding or the like. The end 41b is compressed and deformed and inserted into the tubular connected portion (end) 51a of the handrail 51, and is fixed by, for example, bonding. At this time, as described above, since the outer diameters of the handrails 50 and 51 are adjusted to dimensions substantially matching with the outer diameter of the angled universal joint 41,
The space between the connected handrails 50 and 51 can be made to have no irregularities. In addition, the unevenness formed on the outer surface of the angle universal joint 41 is the end portions 50a of the handrails 50 and 51,
It is preferable that the fixing is performed so as to match the irregularities formed on the inner surface of the inner surface 51a in order to improve the prevention of detachment.

Thereafter, the two handrails 50, 5
One 50 (or 51) is fixed to a predetermined location such as a stair, and then a force is applied to the other handrail 51 (or 50) so as to be inclined at a predetermined angle with respect to the one handrail 50 (or 51). (See FIG. 8), and the other handrail 51 (or 50) is fixed at a predetermined position. At this time, the curved portion 41c is formed in the angle-free joint 41.

Since the angle adjustable joint 41 of the third embodiment is made of rubber, it bends to an arbitrary angle in any direction, so that the handrails 50 and 51 are not restricted in the angle change movement. The coupling can be performed, the molding can be facilitated, and the assembling can be omitted, so that the cost can be reduced. Further, the shape can be freely determined. Also,
In this connection structure, since the angle adjustable joint 41 is made of rubber, it can bend at any angle in any direction.
The handrails 50 and 51 can be connected without any limitation on the movement of the angle change, and the connection workability can be improved.

It should be noted that the angle joint 41 according to the third embodiment is used.
Although rubber is used as the elastic material, the present invention is not limited to this, and it is a matter of course that a polymer material such as another resin having elasticity may be used.

In the third embodiment, the cross-sectional shape of the connecting portion of the spiral elastic spring and the cross-sectional shape of the connected portion of the handrail in the angled universal joint are round, but the present invention is not limited to this. , Other shapes such as a rectangle, a triangle, and a star.

In the above-described first to third embodiments, the handrail is attached to a predetermined position, such as a stair, after the handrail is connected by an angle joint. However, the present invention is not limited to this. The present invention can be similarly applied to a case where one handrail is attached to a predetermined position such as a stair, and then the angle free joint is connected, and the other handrail is attached to the angle free joint.

In the above-described first to third embodiments, the handrail as a connection target material is a pipe material that is hollow over the entire length. However, the present invention is not limited to this. The present invention can also be applied to a connection target material in which a connected portion, which is a portion, is formed in a tubular shape and an intermediate portion has a solid rod shape.

In the above-described first to third embodiments, the case where the handrails are connected by the angle-free joint is described as an example. However, the present invention is not limited to this, and the fence or the fence is formed by the angle-free joint. The same can be applied to the case of connecting other connection target materials.

[0053]

As described in detail above, in the case of using the angle adjustable joint according to the present invention, the connection target members are connected to the connection portions, respectively. Since the connection portions are made of an elastic spiral spring or an elastic material, Since it can bend to an arbitrary angle in any direction, there is no restriction on the movement of the angle change, and the connection target materials can be connected. Further, since the processing and the like are easy, the cost can be reduced. Further, in the case of the connection structure of the present invention, since the angle-free joint bends at any angle in any direction, there is no restriction on the movement of the angle change, and the connection target materials can be connected, and the connection workability can be improved. Will be possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of an angle adjustable joint according to a first embodiment;
It is a front sectional view showing the state where the handrail which is two connection subject materials was connected.

FIG. 2 is a front view showing a state in which two handrails connected by an angle-free joint according to the first embodiment are installed so as to be mutually inclined.

FIG. 3 is a front cross-sectional view showing a state where two handrails, which are objects to be connected, are connected using another angle-free joint according to the first embodiment.

FIG. 4 is a front cross-sectional view showing a state in which two handrails, which are objects to be connected, are connected using still another angle-free joint according to the first embodiment.

FIG. 5 shows the use of the angle universal joint according to the second embodiment;
It is a front sectional view showing the state where the handrail which is two connection subject materials was connected.

FIG. 6 is a front sectional view showing a state in which two handrails connected by an angle-free joint according to a second embodiment are installed so as to be mutually inclined.

FIG. 7 shows the use of the angle adjustable joint according to the third embodiment,
It is a front sectional view showing the state where the handrail which is two connection subject materials was connected.

FIG. 8 is a front view showing a state in which two handrails connected by an angle-free joint according to a third embodiment are installed so as to be mutually inclined.

FIG. 9 is a front sectional view showing a first conventional angle adjustable joint.

FIG. 10 is a front view showing a second conventional angle adjustable joint.

FIG. 11 is a front view showing a third conventional angle adjustable joint.

[Explanation of symbols]

 1, 1 ', 21, 41 Angle joint 10, 11, 30, 31, 50, 51 Handrail

Claims (8)

[Claims] 1. A bracket is formed with two tubular mounting portions, and one end of an elastic helical spring is fixedly mounted inside each tubular mounting portion with the other end protruding from the tubular mounting portion, and the protruding end is formed. An angle-free joint characterized by functioning as a connecting portion. 2. A through-hole is formed in the bracket, and the middle of the elastic helical spring is fixed inside the through-hole with both ends protruding from the through-hole, and the protruding end is used as a connecting portion. An angle-free joint characterized by functioning. 3. An angle-free joint according to claim 1, wherein an intermediate portion of the elastic helical spring is larger than both end portions thereof, and both end portions function as connecting portions. 4. A joint according to claim 1, wherein the joint is a rod-shaped member connected to the joint, and at least a connected portion connected to the connecting portion has a tubular shape. A connection structure comprising: a connection target material formed and having a connection portion of an elastic helical spring inserted into the inside of the tubular connected portion. 5. The elastic helical spring is formed to have a circular cross section, and a helical groove into which a connecting portion is screwed is formed inside the tubular connected portion of the material to be connected. 3. The connection structure according to 1. 6. An angle-free joint according to any one of claims 1 to 3, and a rod-shaped joint connected to the angle-free joint,
At least a connected portion connected to the connecting portion is formed in a tubular shape, and a connection target material having a connecting portion inserted inside the tubular connected portion, wherein each of the connecting portions is circular in cross section. And a spiral groove in which the angular connection portion is screwed into the tubular connection portion of the connection target material. 7. An angle-free joint, wherein a connecting portion at an end is inserted into a tubular connected portion provided on a material to be connected by compression deformation, and is made of a rod-shaped elastic material. . 8. An angle universal joint according to claim 7, and a rod-shaped object to be connected having at both ends a tubular connected part into which the connecting portions at both ends of the angle universal joint are inserted. Connection structure characterized by the following.