JP2526229Y2 - 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 connecting structure for connecting members such as frame members.

[0002]

2. Description of the Related Art In a frame structure or a lattice structure, a structure in which an end face of a frame member as a first member is fixed to a side surface of a frame member as a second member by screwing is often used. For example, in a surface grid, both ends of a grid bar arranged vertically or horizontally may be assembled to left and right vertical frame members of an outer peripheral frame by tapping screws. In this case, the end faces of the lattice bars are respectively abutted against the side surfaces (the inner peripheral surfaces of the outer peripheral frames) of the left and right vertical frame members, and tapping screws are screwed into the tapping holes of the lattice bars in the longitudinal direction from the outer peripheral sides of the left and right vertical frame members. And fixed.

[0003] Such a joint structure of frame members is reliable and easily obtains strength, but the first frame member is easily rotated during fixing because of a single screwed portion. In particular, when fixing using a tool such as an air screwdriver, the first frame member rotates together, making the operation troublesome. Further, even after the fixing, the first frame member may be rotated by the force of the hand. This condition can be seen not only in connection of frames but also in connection of members. In order to prevent this, screwing may be performed at two places. However, if the member has a large number of connecting parts such as a lattice bar, it takes much time and leads to an increase in the cost of the product.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a member coupling structure that can reliably prevent the first member from rotating together by using a simple rotation stopper.

[0005]

A first member and a second member are fixed using a stopper and a screw. The detent is
It is composed of a seat plate provided with a screw insertion hole and an engagement projection protruding from the seat plate. An end face of the first member is abutted against a side surface of the second member, and an engagement protrusion of the detent is provided at an end of the first member through the side surface from the second member side. Engage the joint. Next, the first member and the second member are screwed together with screws passing through the screw through holes of the seat plate.

[0006]

The engagement protrusion of the rotation stopper locks the first member to the second member to prevent co-rotation. The seat plate of the rotation stopper is fixed to the second member side together with the screw, thereby preventing the rotation stopper from falling off.

[0007]

FIG. 1 and FIG. 2 show a first embodiment of the present invention, showing a coupling structure of a corner portion in a plane lattice. The surface lattice has a front structure as a whole and sleeve structures on both sides thereof.

[0008] An upper frame 1 and a lattice bar 2 as members forming the front structure are connected to a cubicle 3 which is also a member. Reference numeral 4 denotes an upper frame of the sleeve structure, and reference numeral 5 denotes a cap mounted on the top of the cubic 3. Each of the upper frame 1, the grid bar 2, and the cubic 3 is an extruded material of an aluminum alloy.

The upper frame 1 has a middle wall 6 in cross section, and tapping holes 8 and 9 in the middle wall 6 and the bottom wall 7. The cubic 3 side of the upper frame 1 is 45 ° in a plan view to make a fastening connection
It is an end face cut into. The lattice bar 2 is a bar arranged horizontally and has a hexagonal cross section as shown in FIG.
Tapping holes 12, 13 are formed in the longitudinal direction on the inner surface side of the bottom wall 11. Like the upper frame 1, the cubic 3 side is an end face cut at 45 ° in a plan view to make a fastening connection.

The cubic 3 has a right-angled triangular cross section as a whole as shown in FIG. 2, and the side surface corresponding to the hypotenuse is the contact surface 14 on the front side, and the side surface corresponding to the bottom is the contact surface on the sleeve structure side. 1
5 is arranged. The contact surface 14 has screw through holes 1 at positions corresponding to the tapping holes 8 and 9 of the upper frame 1 and the tapping holes 12 and 13 of the lattice bar 2.
6 and a pair of engaging projection through holes 17 are formed.
A slit 19 (FIG. 1) is formed on the side surface 18 corresponding to the vertical side.
Is formed, and the eyeboard 20 is mounted.

A tapping screw 21 and a rotation stopper 22 (FIG. 1) are used to fix the upper frame 1 and the cubic 3. The rotation stopper 22 is made of a thick sheet metal, and is composed of a vertical seat plate 23 and a horizontally bent engaging projection 24 below the seat plate 23.
Is formed with a through-hole 25 through which the tapping screw 21 passes. In this embodiment, the distance between the through hole 25 and the engaging projection 24 is different from that of the tapping hole 8 in the upper frame 1.
Nine intervals.

The upper frame 1 and the cubic 3 are assembled as follows. The end surface of the upper frame 1 is applied to the front contact surface 14 of the cubic 3. The tapping screw 21 is passed through the through hole 25 of the seat plate 23 of the rotation stopper 22.

The detent 22 and the tapping screw 21 are fitted into the slit 19 formed on the side surface of the cubic 3.

The engaging projection 24 of the rotation stopper 22 is passed through a through hole 17 for an engaging projection formed in the front contact surface 14, and the tip is inserted into the tapping hole 9 in the bottom wall 7 of the upper frame 1. Insert. Thereby, the upper frame 1 and the ridge 3 are engaged. Next, the tip portion is screwed into the tapping hole 8 of the inner wall 6 through a tapping screw 21 through the screw through hole 16 of the contact surface 14. Tighten the tapping screw 21 to pull the upper frame 1 toward the cubic 3 side. Thereby, the upper frame 1 is joined to the cubic 3.

In this structure, when the tapping screw 21 is tightened, the upper frame 1
The upper frame 1 is engaged with the ridge 3 at two places together with the tapping screw 21 because the ridge 3 has already been engaged with the ridge 3 so that the upper frame 1 rotates together with a powerful tool such as an air screwdriver. I will not do it. Also, the seat plate 2 of the detent 22
Since the upper frame 1 is fixed to the cubic 3 together with the tapping screw 21 and does not fall off, the upper frame 1 is not rotated by hand after being fixed. In addition, rotation stopper 2
The attachment 2 is simple because the engagement projection 24 is merely inserted into the engagement projection through hole 17 of the cubic 3.

The connection structure between the lattice bar 2 and the cubic 3 is the same as that of the upper frame 1. That is, the slit 1 of the cubic 3
9 is fitted with a rotation stopper 22 and a tapping screw 21,
The engaging projection 24 of the rotation stopper 22 is inserted into the tapping hole 13 in the bottom wall 11 of the lattice bar 2 from the through hole 17 for engaging projection of the cubic 3 and engaged therewith.
2 is screwed into the tapping hole 12 in the upper wall 10 of the lattice bar 2 through the through hole 25 of the seat plate 23 in FIG.

After all the grid bars 2 are attached in this way, the eye panels 20 are mounted on the slits 19 of the cubic 3. In addition, as a surface lattice, a front structure is assembled after the sleeve structure is assembled to the cubic 3.

FIG. 3 shows the second embodiment in which the cubic 3 is made slender, and shows a portion where the upper frame 1 of the front structure and the upper frame 4 of the sleeve structure are joined to the cubic 3. I have. The ends of the upper frames 1 and 4 are fastened to the cubic 3 at 45 °.
The cubic 3 is divided into a front side portion 3a and a sleeve side portion 3b, and is fixed to the sleeve side upper frame 4 and the front side upper frame 1 by tapping screws 21, respectively. At the time of fixing with the tapping screw 21, the detent 22 is used in the same manner as in the first embodiment, and the engaging projection 24 of the detent 22 is set upright with the upper frame side before being tightened by the tapping screw 21. Are engaged and cannot rotate with each other.

The front side portion 3a and the sleeve side portion 3b of the cubic 3 are fixed to the upper frames 1 and 4 and then integrated by engagement.
The side surface on the indoor side is hidden by the eyeboard 20.

The above is an embodiment, and the present invention is not limited to the specific structure shown in the drawing, but can be applied to a general connection structure in which members are connected by screws in addition to a surface lattice. The screw is not limited to the tapping screw 21, but may be a screw or the like. The engaging projections 24 of the rotation stopper 22 attached to the cubic 3 are formed not only for the tapping holes 8, 9, 12, and 13 on the end faces of the upper frames 1, 4 or the lattice bar 2, but also for engagement. It may be engaged in the gaps between the projections provided or in the end faces of the members, but not specifically for engagement. That is, the engagement protrusion 24 is formed of the first frame such as the upper frame 1.
It is engaged with an engaging portion provided at an end of the member.

[0021]

When the end surface of the first member is abutted against the second member and joined by screws from the second member side, the first member does not rotate and the work is easy. Also, there is no rotation after mounting.

At the time of mounting and after mounting, the rotation stopper does not fall off.

[Brief description of the drawings]

FIG. 1 is a perspective view (first embodiment).

FIG. 2 is a cross-sectional view.

FIG. 3 is a cross-sectional view (second embodiment).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper frame 2 Lattice bar 3 Square 8 Tapping hole 9 Tapping hole 21 Tapping screw 22 Detent 23 Seat plate 24 Engagement projection 25 Through hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A structure in which a first member and a second member are fixed using a rotation stopper and a screw, wherein the rotation stopper protrudes from a seat plate provided with a through hole for a screw and a seat plate. An end surface of the first member is abutted against a side surface of the second member, and the engagement protrusion of the detent is inserted through the side surface from the second member side to the first member. A first member and a second member which are engaged with an engagement portion provided at an end of the first member, and wherein the first member and the second member are screwed together with screws passing through the screw through holes.