JP2953333B2 - Member 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 structure in which two members are crossed and joined in a T-shape or the like, such as a joint between a pillar such as a carport or a terrace and a rafter. Note that, in this specification, descriptions indicating directions and positions in front and rear, left and right, and up and down are merely used for convenience of description in order to clarify the relative positions of the respective units. In actuality, the relative positional relationship does not change, but the relationship such as front and rear, left and right, and up and down may be deviated.

[0002]

2. Description of the Related Art Conventionally, to join two members in a T-shape, as shown in FIG.
Notches b, b are formed at one end of the opposite side surface, and the other member c is fitted into the notches b, b, and bolts are formed on the member a and the member c from the side surface of the member a where the notch b is not formed. d, a nut e is screwed into the tip of the bolt d, and the member c is fixed so as to be tightened from both sides. In addition, as a fixing means, a bolt nut (d, e)
In addition to those described above, there are a cap that is fitted into the end of one member a to tighten the member c, and a unit that tightens the member c by caulking the end of the one member a.

In such a coupling structure, one member a and the other member c are in line contact at the side edge of the notch b, and the side of the member a where the notch b is not formed and the side of the member c are formed. Since a wide gap is formed between the nuts e
Is tightened, there is a possibility that the side surface of the member a may be bent and deformed inward as indicated by the dotted line. Usually, the deformation is prevented by using the reinforcing member f. However, in the construction using the reinforcing member f, in addition to the joining operation of the member a and the member c, a separate reinforcing member f must be mounted on the member c, which not only increases the product cost but also lowers the construction efficiency. .

[0004]

SUMMARY OF THE INVENTION The present invention relates to a structure in which two members are joined in a T-shape or the like by crossing their axes, and the joint is hardly deformed by a tightening force of a bolt nut or the like. It is another object of the present invention to provide a structure that can reduce the labor of the joining operation and keep the product cost low.

[0005]

A first member and a second member are connected so that their axes cross each other. The first member has a front-back arrangement wall and a left-right arrangement wall in cross section. An opening is formed in the front and rear walls of the first member. The second member is fitted into the opening and is clamped by a force in the left-right direction. The opening is formed by bending inwardly a cut portion formed in the front and rear walls of the first member and connected only at a vertical side parallel to the longitudinal axis of the first member. The cut and bent portion is further bent in one of the left and right directions to form a reinforcing edge composed of a contact surface and a leg piece. The edges of the leg pieces abut against the inner surfaces of the left and right walls. The second member fitted into the opening is joined to the contact surface of the first member.

The following configuration may be adopted. The front and rear walls are a front wall and a rear wall, each having an opening. The front and rear walls are the front and rear walls, and the opening is formed only in the front wall. The first member and the second member are sandwiched by a tightening force of a bolt and a nut that penetrates the fitting portion between the first member and the second member in the left-right direction. One opening is formed by one cut and bent part. One opening is formed by two cut and bent portions opposed to each other. The first member has only one wall in the front-back direction
To have.

[0007]

The contact surface formed by the cut and bent portion and the leg piece reinforce the first member against the force for clamping the second member at the place where the first member and the second member are fitted. I do. The contact surface formed by the cut and bent portion and the leg piece are located between the first member and the second member to increase the contact area between the members, thereby preventing backlash and loosening of the joint structure.

[0008]

FIG. 1 shows a first embodiment, in which a rafter 2 (a second member) arranged horizontally or with a slight gradient is provided on a column 1 (a first member) which stands upright. The joints are shown with their axes crossed. In this embodiment, the pillar 1 and the rafter 2 are extruded materials of an aluminum alloy, and each have a rectangular cross section. The pillar 1 has a front wall 3 and a rear wall 4 and left and right walls 5 and 6. At the upper end of the pillar 1, U-shaped openings 7, 8 are formed in the front wall 3 and the rear wall 4 from the upper end. The width p of the openings 7 and 8 is substantially equal to the width dimension of the rafter 2, and the depth q is a predetermined dimension.

The openings 7, 8 are formed as follows (FIG. 2). An L-shaped cut 11 consisting of a vertical cut 9 from the upper edges of the front wall 3 and the rear wall 4 and a horizontal cut 10 extending from the upper end of the front wall 3 and the rear wall 4 is formed in the upper end of the pillar 1. With this notch, the upper end of the front wall 3 and the upper end of the rear wall 4 are surrounded by an L-shaped cut 11 and an upper end edge, and the vertical cut 9 of the cut 11 is formed.
Is formed as a bent curve 12 at a portion facing the bent portion 12. The folding curve 12 is a vertical side parallel to the longitudinal axis of the column 1, and the cut and bent portion 13 is connected to the front wall 3 and the rear wall 4 only at this vertical side. The length of the vertical cut 9 is q, and the length of the horizontal cut 10 is p. In addition, the vertical part 9 in the front wall 3
Is arranged on the left side wall 5 side, the folding curve 12 is on the right side wall 6 side, and the vertical portion 9 in the rear wall 4 is arranged on the right side wall 6 side,
The folding curve 12 is on the left side wall 5 side.

The cut portion 13 is bent inward about the folding curve 12 to form openings 7 and 8. The bent cut portion 13 further has a second bent curve 14 at the front end.
Are bent substantially at right angles to the left and right walls 5 and 6 to form a leg piece 15a and a contact surface 15b. The edges of the leg pieces 15a abut against the inner surfaces of the left and right walls 5 and 6, and finally the contact surface 15a.
b and the leg piece 15a constitute a reinforcing edge 16 (FIG. 3).
The height s of the leg piece 15a is such that the contact surface 15b is
And the height to be parallel. In the example shown in FIGS. 1 to 3, since the width of the rafter 2 is relatively large with respect to the width dimension of the pillar 1, the width of the cut and bent portion 13 is wide, and therefore, the leg piece 15 a
Reaches the vicinity of the center of the left and right walls 5 and 6 in the expected direction of the left and right walls 5 and 6.

In this embodiment, the left and right walls 5 and 6 of the column 1 are provided with bolt insertion holes 17 at positions substantially smaller than the dimension q from the upper end and substantially in the center of the expected direction (ie, avoiding the position of the reinforcing edge 16). , 17 are also formed, and bolt insertion holes 18, 18 are also formed in the left and right side walls of the rafter 2. Then, the ends of the rafter 2 are fitted into the openings 7 and 8 of the column 1 so that the bolt insertion holes 17 and 18 are aligned in the left-right direction, and the bolt 19 is inserted into the column 1 and the rafter 2 from one side. Penetrate in the direction. At this time, both sides of the rafter 2 are in surface contact with and joined to the contact surface 15b of the reinforcing edge 16 at the fitting point.

Next, a nut 20 is screwed into the tip of a bolt 19 projecting to the other side, tightened, and the rafter 2 is sandwiched and joined between the left and right walls 5 and 6 of the column 1. The tightening force acts to deform the left and right walls 5 and 6 of the column 1 inward. However, a reinforcing edge 16 is present inside the left and right walls 5 and 6 and hits the rafter 2 with a wide contact surface 15b. At the same time, this surface is supported by the leg piece 15a, and the leg piece 15 is relatively short, so that it has high strength and is hardly crushed. For this reason, the tightening force by the bolts and nuts 19 and 20 can be increased to improve the strength of the joint structure.

On the other hand, the reinforcing edge 16 consisting of the leg 15a and the contact surface 15b can be slightly deformed when the column 1 and the rafter 2 are tightened by the bolts and nuts 19 and 20, so that the column 1 and the rafter 2 Performs the function of a cushion at the connection point of, and eliminates play in the connection structure. Further, loosening due to vibration is prevented. FIG. 4 shows a second embodiment having the same structure as the first embodiment, but having a smaller width of the rafter 2 than the width of the pillar 1. In this example, since the width of the cut and bent portion 13 is narrow, the leg pieces 1 are different from those of the first embodiment.
5a cannot reach the center portions in the width direction of the left and right walls 5 and 6, respectively. However, the reinforcement edge 16 is close to a considerable position, and performs almost the same function as in the first embodiment.

FIG. 5 shows a third embodiment having the same structure as that of the first embodiment, except that the reinforcing edge 16 has openings 7 and 8.
Are formed on both sides. That is, in the front wall 3 and the rear wall 4 of the pillar 1, an inverted T-shape comprising a vertical cut portion having a dimension q along the center line of the wall and a horizontal cut portion having a size p as a whole from the lower end in the left-right direction. The cuts 13 and 13 are formed on both sides of the central vertical cut so as to face each other. Then, the cuts 13 and 13 are bent inward on both sides to form openings 7 and 8. It is formed. Each cut portion 13 is further bent to one side in the left-right direction from the second bending curve 14 as in the case of the first embodiment to form a reinforcing edge 16 having a leg piece 15a and a contact surface 15b. You.

According to this embodiment, the column 1 in the fitting portion
Are cross-sectionally symmetrical with each other, and can receive the tightening force of the bolts 19 and the nuts 20 more uniformly than those in which the reinforcing edge 16 is formed only on one side of each of the openings 7 and 8. It is possible to prevent the tendency of the column 1 from being twisted at times. The above is the embodiment, and the present invention is not limited to the illustrated specific configuration. In this embodiment, the first member and the second member are both rectangular in cross section and hollow, but the cross section of the first member is shown in FIG.
In a cross section as shown in (b), a polygon or a portion having a convex portion or a concave portion on a part of a side forming the cross section may be used.

In general, the first member may be a member having a wall 3 or 4 arranged in front and rear and a wall 5 or 6 arranged in right and left in cross section, and furthermore, a front wall 3 and a rear wall 4 as front and rear arranged walls. However, the opening (7, 8) is formed only in the front wall 3, and the second member fitted in the opening 7 has its tip end face abutting against the inner surface of the rear wall 4. Connection structure, field
In some cases, the first member does not have complete walls on all four sides,
In the case of an opening like a slot (Fig. 8) or a U-shaped cross section,
One member has only one wall in cross section in the front-rear direction
What you do .

In the embodiment, the cut and bent portion 13 is formed in a rectangular shape by the vertical cut portion 9 and the horizontal cut portion 10, but the horizontal cut portion 10 may be formed in a mountain shape or another form as shown in FIG. is there. Therefore, the cut-bent portion 13 generally has the first
It can be said that it is a portion connected to the front and rear walls of the member only at a vertical side parallel to the longitudinal axis of the first member. Further, the openings 7 and 8 of the embodiment are formed in a groove shape at the end of the first member, but are formed in a window shape on the front and rear walls of the first member. Is also good.
The connecting portion of the first member and the second member has a structure in which the axes of these members are crossed and connected, and the second member fitted from one wall surface of the first member is opposed to the first member. It may or may not penetrate other wall surfaces. In addition, in the present invention, the intersection of the axis includes the range of the deviation within the dimension (width) in the left-right direction of the first member.

[0018]

According to the first aspect of the present invention, since the reinforcing edge composed of the leg piece and the contact surface exists in the opening of the first member,
The rigidity of this portion is high, so that deformation due to the force in the left-right direction can be prevented. For this reason, the tightening force can be increased, and the joint structure can be made stronger. Since the leg pieces and the contact surface constituting the reinforcing edge are formed integrally with the member by the cut and bent portion which is a part of the member, a separate reinforcing material can be omitted or reduced. For this reason, not only the product cost is reduced, but also the joining operation is not troublesome, and the working efficiency is improved. Since a contact surface is provided on the reinforcing edge to increase the contact surface between the members, it is possible to prevent looseness and looseness of the joint structure.

According to the second aspect of the present invention, since the openings are provided in the front wall and the rear wall of the member, the fitting state between the first member and the second member is assured. In addition to the effect of the configuration, the coupling state is stabilized. According to the configuration of claims 3 and 4, even if the coupling state of the second member to the first member is cantilever, the clamping force of the fitting portion is increased,
In addition to the effect of the configuration described in claim 1, a stable coupling structure can be provided. According to the configuration of claim 5,
The bolt and nut are the simplest and most reliable means for clamping with a left-right force. In addition to the effects of the configuration described in claim 1, a more stable coupling structure can be achieved.

According to the configuration of claim 6, the leg piece of the reinforcing edge can be arranged near the opening, so that in addition to the effect of the configuration of claim 1, the function of supporting the tightening force in the left-right direction is provided. high. In addition, since one opening has one reinforcing edge, processing efficiency is good. According to the configuration of claim 7, since the reinforcing edges of the openings formed in the front and rear walls are arranged on both sides of the opening, the tightening force in the left-right direction is not biased on both sides of the opening. In addition to the effect of the configuration, the torsional force applied to the first member by the tightening force can be eliminated.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a connecting portion (first embodiment);

FIG. 2 is a perspective view showing a processing state.

FIG. 3 is a plan view of a connecting portion (first embodiment).

FIG. 4 is a plan view of a connecting portion (second embodiment).

FIG. 5 is a plan view of a connecting portion (third embodiment);

FIG. 6 is an exploded perspective view of a connecting portion (conventional example).

FIGS. 7A and 7B are perspective views each showing an end of another first member.

FIG. 8 is an exploded perspective view of a connecting portion (another embodiment).

FIG. 9 is a perspective view showing another opening.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Column (1st member) 2 Rafter (2nd member) 3 Front wall 4 Rear wall 5 Left wall 6 Right wall 7 Front opening 8 Rear opening 9 Vertical cut 10 Horizontal cut 11 L-shaped cut 12 Folded curve 13 Cut / bend 14 Second bent curve (vertical side) 15a Leg piece 15b Contact surface 16 Reinforcement edge 17 Bolt insertion hole (pillar) 18 Bolt insertion hole (rafter) 19 Bolt 20 Nut

Claims (7)

(57) [Claims] 1. A structure in which a first member and a second member are joined with their axes intersecting with each other, and the first member has a front-rear wall and a left-right wall in cross section. The second member is fitted in an opening formed in the front and rear wall of the first member and is sandwiched by a force in the left and right direction, and the opening is formed in the front and rear wall of the first member. A cut portion, which is connected only at a vertical side parallel to the longitudinal axis of the first member, is formed by bending inward, and the cut portion is further bent in one of the left and right directions to form a reinforcement comprising a contact surface and a leg piece. A member formed on the edge, wherein the edge of the leg piece is in contact with the inner surface of the left and right wall, and the second member fitted in the opening is joined to the contact surface. Coupling structure. 2. The member connecting structure according to claim 1, wherein the front and rear walls are a front wall and a rear wall, and each has an opening. 3. The member connecting structure according to claim 1, wherein the front and rear walls are a front wall and a rear wall, and an opening is formed only in the front wall. 4. The first member and the second member cross their axes.
The first member has a cross-sectional structure.
And one wall in the front-rear direction
An opening formed in the one wall of the first member has a second
Are fitted and clamped by the force in the left and right direction.
A mouth formed in the one wall of the first member;
A cut connected only on the vertical side parallel to the longitudinal axis of one member
It is formed by bending the bent part inward, and the cut part is further
It is bent to one side in the left and right direction and consists of a contact surface and leg pieces
The edge of the leg piece is formed on the inner surface of the left and right wall
The second member abutted and fitted in the opening contacts
A joining structure of members characterized by being joined to a surface. 5. A tightening force of a bolt and a nut that penetrates a fitting portion between the first member and the second member in the left-right direction.
The member connecting structure according to any one of claims 1 to 4, wherein the first member and the second member are sandwiched. 6. The member connecting structure according to claim 1, wherein one opening is formed by one cut and bent portion. 7. The member connecting structure according to claim 1, wherein one opening is formed by two cut and bent portions facing each other.