JPH0632501U - Hollow member connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To easily achieve a connecting structure of two hollow members often used in a frame or a frame without using screws or caulking. [Structure] Positioning through holes 4 are provided at the connection-side ends of the hollow members A and B, and a connecting block 1 and a connecting member 2 are used. The coupling block 1 has an engaging portion 5, and the coupling member 2
Is provided with a locking claw 6. Both hollow members A in the connecting block 1,
B is connected, and further, the connecting member 2 is engaged with the engaging portion 5 of the connecting block 1 through the positioning through hole 4 of the engaging claw 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connecting structure for hollow members, which is frequently used in frames and frames.

[0002]

[Prior art]

 Conventionally, for connection of hollow members, a connecting block that is inserted into the hollow part to connect both hollow members, or a connecting part material that is fixed by extending the outer surfaces of both hollow members with their end faces abutting each other is used. . When both hollow members are connected at an angle, the connecting block becomes a corner block or the like and the connecting member becomes an L-shaped metal fitting or the like.

However, in the case of a coupling block, after fitting, a relatively troublesome work such as screwing and caulking work is required to prevent the hollow block from coming off from the hollow member, and workability is poor. This leads to high costs. In the case of a connecting member, the force that regulates out-of-plane deformation (twisting, deviation in the prospective direction) is weak, so an additional structure is required to reinforce this point. As in the case of, it is necessary to stop screws and crimp.

[0004]

[Problems to be solved by the device]

 The present invention aims to simplify the connection of hollow members, improve workability, and reduce costs.

[0005]

[Means for Solving the Problems]

 The present invention relates to a structure in which two hollow members are connected to each other by a connecting block and a connecting member. Positioning through holes are respectively provided at the connection side ends of the two hollow members. An engaging portion is provided at a position corresponding to the through hole of the coupling block. Locking claws that prevent the hollow member from coming off are provided on the side surfaces of the hollow member at both ends of the connecting member. Both hollow members are joined by the joining block, and the connecting member is attached by engaging the engaging claw of the joining member with the engaging portion of the joining block through the positioning through hole.

The connecting member may be slightly deformed in advance in a biasing direction in which the engagement with the engaging portion by the locking claw is strengthened with respect to the accommodation angle of the two hollow members. .

[0007]

[Action]

 The joining block joins the two hollow members by fitting. The connecting member prevents the hollow member and the connecting block from coming off, and also determines the position of the hollow member with respect to the connecting block.

[0008]

【Example】

 FIG. 1 shows a case where two hollow members A and B are connected at a right angle in the first embodiment, and a right-angled corner block 1 (coupling block) and a corner connecting member 2 (coupling member) are used. The two hollow members A and B are extruded aluminum alloy materials, and the end faces 3 (a, b) on the connection side are cut into a 45-degree "reservoir" shape. Moreover, through holes 4 (a, b) for positioning are formed on the upper surface of the end of each connection side.

The corner block 1 is a molded product of a hard synthetic resin, and has a cross-sectional shape and a shape that fits snugly into the hollows of the hollow members A 1 and B 2. In addition, engaging portions 5 (a, b) are formed at positions corresponding to the positioning through holes 4 (a, b) where the hollow members A 1 and B 2 are fitted. In this embodiment, the engaging portions 5 (a, b) are grooves formed so as to penetrate in the direction transverse to the longitudinal direction of the hollow members A and B, and their cross sections are directed toward the apex of the corner block 1 and are mutually It is formed in a hook shape facing each other.

The corner connecting member 2 is formed by transversely cutting an aluminum alloy extruded material, and a flat plate is bent at a right angle so as to be abutted along the outer surface of the connecting portion of the hollow members A and B. The structure is provided with locking claws 6 (a, b) at positions corresponding to the through holes 4 (a, b) on the side surface of the hollow member. The engaging claws 6 (a, b) are provided at their inner ends with hooks 7 (a, b) that bend toward the corner vertices of the corner connecting member 2. The dimensions a and b (FIG. 2) of the positioning through holes 4 (a and b) and the corner apexes are strictly created in the hollow members A and B, the corner block 1 and the corner connecting member 2.

The connection is made as follows. Inserting the connecting side ends of the hollow members A and B from both ends of the corner block 1 to align the positioning through holes 4 (a, b) on the hollow member side with the engaging parts 5 (a, b) on the corner block side. . The ends of the hollow members A, B abut the "reservoir" (Fig. 2). Then, while slightly opening the angle of the corner connecting member 2, the locking claws 6 (a, b) on the side surface of the hollow member are moved along the outer surfaces of the hollow members A, B which are in contact at right angles. Slide the engaging claws 6 (a, b) into the engaging portions 5 (a, b) through the through holes 4 (a, b) to engage them.

As a result, the connection angle of the two hollow members A and B is determined by the corner block 1, out-of-plane deformation is prevented, and the corner portions are reinforced. Further, the locking claws 6 (a, b) of the corner connecting member 2 maintain the hollow members A, B and the corner block 1 in a correct dimensional relationship and prevent the members from coming off. Note that, once the corner connecting member 2 is mounted, the hook portion 7 (a, b) of the locking claw 6 (a, b) is locked in the hook-shaped groove which is the engaging portion 5 (a, b). It will not come off.

In this way, the two hollow members A and B are accurately and firmly connected by a simple operation without screwing or crimping. 3 and 4 show a second embodiment in which the configurations of the corner block 1 and the corner connecting member 2 are different from those of the first embodiment.

In this embodiment, the corner block 1 is obtained by crossing an extruded material of aluminum alloy, and each dimension is accurate, and a connection structure with higher accuracy can be obtained. In addition, it is lightweight and inexpensive because it can be easily obtained in large quantities. The corner connecting member 2 is also made of an extruded material in the same manner, but in this embodiment, the ends of the locking claws 6 (a, b) on both ends are slightly bent inward (see the figure). 4) When attached to a corner, the engagement between the hook portion 7 (a, b) of the locking claw 6 (a, b) and the hook-shaped groove that is the engaging portion 5 (a, b) is strengthened. It is supposed to be done. Note that such reinforcement can also be achieved by making the bending angle of the corner connecting member 2 slightly smaller than the connection angle of the hollow members A and B in advance.

In FIG. 5, in the third embodiment, the hollow members A and B are not "reservoir" but vertical butting connections. Both ends of the hollow members A and B are cut at right angles to the longitudinal direction, and a notch 8 is formed at a connecting side end of one hollow member B at a portion where the other hollow member A abuts. The corner connecting member 2 has the same structure as that of the first embodiment. FIG. 6 shows a fourth embodiment, in which two hollow members A and B are linearly connected by a linear connecting block 1 and a linear connecting member 2. The joining block 1 and the connecting member 2 in this embodiment have the same structure as that of the corner block 1 and the corner connecting member 2 in the first embodiment which are simply stretched in a straight line. That is, the present invention can also be used in the case where two hollow members A and B are linearly connected.

FIG. 7 shows another embodiment of the combined block 1. The corner block 1 indicated by reference numeral (a) is made of synthetic resin, and has a large number of ribs 9 formed on its surface at intervals in the direction orthogonal to the longitudinal direction of the hollow members A and B. When the joining block 1 is fitted into the hollow members A and B, the tip edges of the ribs 9 are brought into contact with the inner surface of the hollow member. Can be made stronger. Further, if the size of the coupling block 1 is large and there is a great difficulty in fitting, it can be easily dealt with by removing the rib 9, and the versatility of the coupling block 1 is high. Further, the rib 9 in the central portion can be made to function as the engaging portion 5 by molding its position at the position of the positioning through hole 4 (a, b).

The connecting block 1 indicated by reference numeral (B) is a linear one, and is obtained by cutting an extruded material into an appropriate length. The outer surface is provided with several ribs 10 parallel to the longitudinal direction of the hollow members A and B, and the tip edges thereof contact the inner surface of the hollow members. Similar to the case (a), this coupling block 1 is easy to adjust the dimensions for fitting, and the central ribs 10 are cut out at appropriate intervals to easily form the engaging portion 5. be able to. Further, since the rib 10 is parallel to the longitudinal direction of the hollow members A and B, the fitting with the hollow members A and B can be smoothly performed. The above is an embodiment, and the present invention is not limited to the illustrated specific configuration. For example, the angle of the corner block 1 is arbitrary.

[0018]

[Effect of device]

 The two hollow members can be reliably connected by a simple work, the workability is improved, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view.

FIG. 2 is a vertical sectional view.

FIG. 3 is an exploded perspective view.

FIG. 4 is a vertical sectional view.

FIG. 5 is an exploded perspective view.

FIG. 6 is a perspective view.

FIG. 7 is a perspective view of (a) and (b).

[Explanation of symbols]

1 Coupling Block 2 Coupling Member 4 Positioning Through Hole 5 Engaging Part 6 Locking Claw

Claims (2)

[Scope of utility model registration request] 1. A structure in which two hollow members are connected to a coupling block by a coupling member, and positioning through holes are respectively provided at the connection side end portions of the hollow members and correspond to the through holes of the coupling block. An engaging portion is provided at the position,
Locking pawls for preventing the hollow member from coming off are provided on the side surfaces of the hollow member at both ends of the connecting member, both hollow members are connected by a connecting block, and further, the connecting member positions the locking pawls through holes. A hollow member connection structure, characterized in that the hollow member is attached by being engaged with an engaging portion of a coupling block via. 2. A slight deformation is made in advance in a direction in which the connecting member is biased so that the engagement with the engaging portion by the locking claw is strengthened with respect to the accommodation angle of the two hollow members. The hollow member connection structure according to claim 1, which is characterized.