JP2852489B2 - Connection structure for tubular members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure for connecting cylindrical members in the fields of civil engineering, construction, transportation and the like.

[0002]

2. Description of the Related Art For example, when a veranda handrail of an apartment or the like is constructed, the connecting means of the frame member is shown in FIG.
As shown in (1), the end of the horizontal frame member (52) is in contact with the side surface of the vertical frame member (51), and this contact portion is joined by welding or brazing.

As another connecting means, as shown in FIG. 7, a T-shaped joint (53) has been used. That is, while the main pipe portion (53a) of the T-shaped joint (53) is passed through the vertical frame member (51), the horizontal frame member (52) is passed through the sub-tube portion (53b) of the T-shaped joint (53).
End was inserted.

[0004]

Among the above-mentioned conventional connection structures, the former requires a certain level of skill in welding or brazing, requires a lot of time and labor, and requires a horizontal frame member for the vertical frame member (51). There is a problem that the positioning of (52) is difficult.

In the latter case, the main pipe portion of the T-shaped joint (53) is used.
(53a) is passed through the vertical frame member (51), the vertical frame member (51),
The T-shaped joint (53) must be straight, and at least one end of the vertical frame member (51) cannot be bent in order to pass through the T-shaped joint (53). In the case of the connection according to (1), there is a disadvantage that it is difficult to obtain a high bonding strength.

SUMMARY OF THE INVENTION An object of the present invention is to provide a connecting structure for a cylindrical member which can easily connect the cylindrical member without requiring special skills or the like for the connecting operation, and which can connect with high strength. .

[0007]

SUMMARY OF THE INVENTION The present invention relates to a connecting structure of a cylindrical member in which one end of another cylindrical member having a side wall opposed to one cylindrical member having a side wall via a connecting member is connected to the other cylindrical member having a side wall. There is provided a ridge in the length direction at the center of the width of the side wall of one cylindrical member, grooves are formed in both sides of the ridge in the length direction, and both edges of the side wall are provided. A protruding wall projecting from the side wall at a substantially right angle is provided, and a space is formed between the protruding wall and the protruding strip so that a pair of opposed L-shaped plate-shaped locking portions of the connecting member can enter. , Connecting members
A pair of plate-shaped locking portions and a pair of plate-shaped locking portions provided with opposed inwardly bent portions that can sandwich the ridge from both sides and that can be fitted in the grooves of the ridge on the side edges of the ridge. It comprises a contact portion having a substantially inverted Y-shaped cross section having a straight portion which can contact the ridge and a forked portion which is bifurcated from the edge opposite to the contact side of the straight portion. The edge is continuous with the opposite edge of the ridge on both plate-shaped locking portions, and the interval between the two plate-shaped locking portions is wider on the ridge side than on the opposite side, and the two plate-shaped locking portions are freely accessible to each other. The distance between the opposing side walls of the other cylindrical member is such that the widened ridge side edges of the two plate-shaped locking portions of the connecting member are narrowed so that the connecting member can be fitted into the other cylindrical member. When one end of the other cylindrical member is fitted over the connecting member, a linear portion in the contact portion of the connecting member is formed. The side edge of the ridge abuts against the ridge of one cylindrical member, and both plate-shaped locking portions of the connecting member approach each other, and the inwardly bent portion is fitted into the groove of the ridge of one cylindrical member. The two side walls of the other cylindrical member are sandwiched between the plate-shaped locking portion of the connecting member and the protruding wall of the one cylindrical member.

[0008]

According to the connecting structure of the cylindrical member according to the present invention having the above-described structure, the side edge of the linear portion in the contact portion of the connecting member is brought into contact with the convex line of one of the cylindrical members. In a state where the inwardly bent portion of the plate-shaped locking portion is opposed to the groove of the ridge,
Just by fitting the other cylindrical member over the connecting member, the two plate-shaped locking portions approach each other, and the inwardly bent portion is fitted into the groove in the convex ridge of one cylindrical member, and the other cylindrical member is fitted. As a result of the both side walls of the member being sandwiched between the plate-shaped locking portion of the connection member and the protruding wall of the one cylindrical member, connection between one cylindrical member and the other cylindrical member can be performed.

In the above connection, when the other tubular member is fitted over the connecting member, the two plate-shaped locking portions of the connecting member are arranged such that the straight portion of the contact portion of the connecting member has the straight portion of the one tubular member. Since the two plate-shaped locking portions come close to each other in a state of contact with the ridge, the two plate-shaped locking portions smoothly come close to each other, and the inward bent portion is easily fitted into the groove of the ridge in one of the tubular members. It is.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the connection structure of the present invention is used for a balcony handrail of an apartment will be described with reference to the drawings.

As shown in FIGS. 1 to 4, a side wall opposing a handrail member (1) having a side wall (1a) via a connecting member (3).
(2a) is a connecting structure of a tubular member to which one end of a horizontal rail member (2) is connected, and a center of the width of a side wall (1a) of a handrail member (1) has a ridge ( 1b) is provided, grooves (4) are formed on both sides of the ridge (1b) in the length direction thereof, and the side walls (1b) are formed.
Projecting walls projecting at approximately right angles from the side wall (1a) on both edges of (a)
(5) is provided, and a connecting member is provided between the protruding wall (5) and the ridge (1b).
A space is formed between the pair of opposed L-shaped plate-shaped locking portions (6) in (3) that can enter the connecting member.
In (3), the ridge (1b) can be sandwiched from both sides and the ridge (1b)
b) A pair of plate-shaped locking portions (6) and a pair of plate-shaped locking portions provided with opposed inwardly bent portions (8) that can be fitted into the grooves (4) of the ridges (1b) on the side edges. (6) A straight part that can contact the ridge (1b) between them
(7a) and a contact portion (7) having a substantially inverted Y-shaped cross section having a bifurcated portion (7b) that is bifurcated from the edge opposite to the contact side of the straight portion (7a). 7b) is connected to the opposite edge of the ridge (1b) of both plate-shaped locking portions (7), and the interval between the two plate-shaped locking portions (6) is on the ridge (1b) side. It is wider than the opposite side and the two plate-shaped locking portions (6) are accessible to each other,
The distance between the opposing side walls (2a) in the cross beam member (2) is equal to the width of the protruding ridge (1b) in the two plate-shaped locking portions (7) of the connecting member (3).
The side edges are narrowed so that the connection member (3) can be fitted into the horizontal rail member (2) .The connection member (3) is fitted with one end of the horizontal rail member (2) so that the connection can be made. The side edge of the ridge (1b) of the linear portion (7a) in the abutment portion (7) of the member (3) abuts the ridge (1b) of the handrail member (1) and both plates of the connecting member (3). The hooks (6) approach each other and their inwardly bent portions (8)
Is inserted into the groove (4) of the ridge (1b) of the handrail member (1), and both side walls (2a) of the horizontal rail member (2) and the plate-shaped locking portion (6) of the connecting member (3) and the handrail. The member (1) is sandwiched between projecting walls (5).

The tip of the left protruding wall (5) of the handrail member (1)
(5a) is bent inward, and the side wall (2
a). Protruding wall (5) on the right side of the railing (1)
A guide wall (9) is provided at the tip of the.

Each member of this embodiment is made of an aluminum alloy, and the connecting member has, for example, the strength and proof strength of 6000 series-T5 or T6 so that both plate-shaped locking portions (7) can be deformed. Is used. Moreover, it is needless to say that tempering is appropriately performed by performing annealing or the like as necessary.

According to the connection structure of the cylindrical member in the above example, the side edge of the linear portion (7a) of the abutting portion (7a) of the connecting member (3) has the convex edge (1b) of the handrail member (1). Abutting the ridge (1b) and the inwardly bent portions (8) of the two plate-shaped locking portions (6) with the grooves (4) of the ridge (1b).
In a state where the connecting members (3) are opposed to each other, only the horizontal rail members (2) are fitted and covered, and the two plate-shaped locking portions (2) approach each other,
The inwardly bent portion (8) is fitted into the groove (4) of the ridge (1b) of the handrail member (1), and the side walls (2a) of the horizontal rail member (2)
Is sandwiched between the plate-shaped locking portion (6) of the connecting member (3) and the protruding wall (5) of the handrail member (1), so that the handrail member (1) and the horizontal rail member (2) can be connected.

In the above connection, the cross beam member (1)
When the connecting member (3) is fitted over the connecting member (3), the two plate-shaped engaging portions (6) of the connecting member (3) are formed by the linear portion (7a) of the contact portion (7) of the connecting member (3). The two plate-shaped locking portions (6) approach each other smoothly while contacting the ridge (1b) of (1), and the inwardly bent portion (8) of the handrail member
It is easily fitted into the groove (4) of the ridge (1b) in (1).
In addition, since the guide wall (9) is provided at the tip of the projecting wall (5) on the right side of the handrail member (1), the connecting member (3) is
It is easily guided to the guide wall (9) and can be easily arranged at a predetermined position of the handrail member (1).

In addition, according to the connection structure of the cylindrical members of the above example, basically, the connection between the handrail member (1) and the cross rail member (2) can be firmly performed only by fitting each member. If necessary, an adhesive may be used in combination, or a rivet (10) may be optionally used as in the following embodiment.

FIG. 5 shows another embodiment of the present invention, in which a horizontal tubular cross member (22a) is provided between cylindrical handrail members (21).
Is connected. On the other hand, below the crosspiece member (22a),
The other horizontal rail member (22b) is connected in an inclined manner, and the connecting members (23a) (23b) connecting the horizontal rail member (22b) correspond to the horizontal rail member (22b) when viewed from the front. Slope. Also, a rivet (10) is used to make the connection between the connecting members (23a) (23b) and the crosspiece members (22a) (22b) stronger. Other configurations are the same as the connection structure of the above example.

In the above embodiment, the case where the present invention is applied to the balcony railing of an apartment is described, but the present invention is not limited to this. That is, the present invention
The present invention can be widely applied to connection of various members such as connection between a side member of a ladder and a stepping bar, connection between a vertical frame member and a horizontal frame member of a fence.

[0019]

According to the connecting structure of the tubular member of the present invention,
A state in which the side edge of the straight ridge in the contact portion of the connecting member is in contact with the ridge of one of the tubular members, and the inwardly bent portions of both plate-shaped locking portions are opposed to the grooves of the ridge. Then, just by fitting the other tubular member over the connection member, the two plate-shaped locking portions approach each other, and the inwardly bent portion is fitted into the groove in the convex line of one tubular member, and As a result of the two side walls of the tubular member being sandwiched between the plate-shaped locking portion of the connecting member and the protruding wall of the one tubular member, connection between one tubular member and the other tubular member can be performed.

Therefore, according to the present invention, the members can be easily connected without requiring special skills such as welding and complicated work associated therewith. In addition, connection can be made even if both ends of the member to be connected are subjected to bending or the like.

In the connection structure according to the present invention, when the other tubular member is fitted over the connection member, the two plate-shaped locking portions of the connection member are formed such that the straight portion of the contact portion of the connection member has one cylindrical shape. The two plate-shaped locking portions come close to each other in a state where they come into contact with the ridges of the members, and the inwardly bent portions thereof are easily fitted into the grooves of the ridges of one of the tubular members. It will be included.

In addition, in the case of the connection structure of the present invention, the plate-shaped locking portions of the connection member are formed in a desired inclined shape when viewed from the front, so that one of the cylindrical members can be connected to the other of the cylindrical members. Can be connected diagonally.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a connection structure of the present invention.

FIG. 2 is a sectional view of a main part showing a state before connection of each member in the connection structure of the present invention.

FIG. 3 is an enlarged view of a main part showing a contact state of a connection member.

FIG. 4 is a sectional view of a main part showing a connection state by the connection structure of the present invention.

FIG. 5 is a front view showing another embodiment of the connection structure of the present invention.

FIG. 6 is a perspective view showing a conventional example.

FIG. 7 is a perspective view showing another conventional example.

[Explanation of symbols] (1) Handrail member (1a) Side wall (1b) Convex ridge (2) Side beam member (2a) Side wall (3) Connection member (4) Groove (5) Projecting wall (6) Plate-shaped locking Part (7) Contact part (7a) Straight part (7b) Bifurcated part (8) Inward bent part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F16B 7/04 B21D 51/16 E04B 1/58

Claims (1)

(57) [Claims] An end of another cylindrical member (2) having an opposite side wall (2a) is connected to one cylindrical member (1) having a side wall (1a) via a connecting member (3) via a connecting member (3). In the connection structure of cylindrical members, a ridge (1b) is provided in the center of the width of the side wall (1a) of one cylindrical member (1) in the length direction thereof, and both side surfaces of the ridge (1b) are provided. Has a groove (4) formed in the length direction thereof, and a projection wall (5) projecting from the side wall (1a) at a substantially right angle is provided at both edges of the side wall (1a). A space is formed between the ridges (1b) so that a pair of opposed L-shaped plate-shaped locking portions (6) of the connecting member (3) can enter into the connecting member (3). , An inwardly facing bent portion that can sandwich the ridge (1b) from both sides and can be fitted into the groove (4) of the ridge (1b) on the side edge of the ridge (1b).
(8) is provided with a pair of plate-shaped locking portions (6), and between the plate-shaped locking portions (6), the linear portion (7a) and the linear portion ( 7a) has a bifurcated portion (7b) that bifurcates from the edge opposite to the abutment side of the contact portion (7), and has a substantially inverted Y-shaped cross section. The ridge (1b) of the plate-shaped locking portion (7) is continuous with the edge opposite to the ridge (1b), and the interval between the two plate-shaped locking portions (6) is wider on the ridge (1b) side than on the opposite side and both plates. The locking portions (6) are freely accessible to each other, and the distance between the opposing side walls (2a) of the other cylindrical member (2) is
(3) The width of the widened ridge (1b) in both plate-shaped locking portions (7) is narrowed so that the connection member (3) can be fitted into the other cylindrical member (2). One end of the other cylindrical member (2) is fitted over the connecting member (3), so that the connecting member
The side edge of the ridge (1b) of the linear portion (7a) in the abutment portion (7) of (3) abuts the ridge (1b) of one of the tubular members (1) and the connecting member (3). The two plate-shaped locking portions (6) approach each other, and the inwardly bent portion (8) is fitted into the groove (4) of the ridge (1b) of one cylindrical member (1), and the other cylinder is Side walls of the member (2)
(2a) is the plate-shaped locking portion (6) of the connecting member (3) and one cylindrical member
(1) A connection structure of a tubular member that is sandwiched between the protruding walls (5).