JPH0654894U - Member connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] The first and second members are attached to the side surface of the second member.
In the joining structure of the members in which the end faces of the members are abutted and joined by screwing, the first member is prevented from rotating. [Structure] The first frame member 1 (first member) and the second frame member 3 (second member) are attached to the side surface of the second frame member by using the rotation stopper 22 and the screw 21. The end face of is abutted and fixed from the second frame member side. The rotation stopper 22 is composed of a seat plate 23 provided with a screw through hole 25 and an engagement protrusion 24 protruding from one surface thereof in one direction. From the second frame member 3 side, the engaging protrusion 2
4 is engaged with the engaging portion provided on the end face of the first frame member 1, and then both frame members are fixed together with the seat plate 23 by the screws 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connecting structure for connecting members such as a frame member.

[0002]

[Prior art]

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

Although such a joint structure of the frame members is easy and reliable, the first frame member is easily rotated at the time of fixing because of the single screwed portion. Especially when fixing with a tool such as an air screwdriver, the first frame member rotates together to make the work troublesome. Also, the first frame member may rotate due to the force of the hand even after being fixed. This state is generally found in the joining of members as well as the joining of frames. This can be prevented by screwing at two points, but if the member has a large number of connecting points such as lattice bars, it will take time and increase the cost of the product.

[0004]

[Problems to be solved by the device]

 An object of the present invention is to provide a member connecting structure capable of reliably preventing co-rotation of the first member by using a simple rotation stopper.

[0005]

[Means for Solving the Problems]

 The first member and the second member are fixed by using the rotation stopper and the screw. The rotation stopper is composed of a seat plate provided with a screw insertion hole and an engagement protrusion protruding from the seat plate. The end face of the first member is abutted against the side face of the second member, and the engaging protrusion of the rotation stopper is provided at the end of the first member by penetrating the side face from the side of the second member. Engage with the joint. Next, the first member and the second member are screwed together with the screw passed through the screw through hole of the seat plate.

[0006]

[Action]

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

[0007]

【Example】

 FIG. 1 and FIG. 2 show a first embodiment and show a coupling structure of a corner portion in a surface lattice. This area lattice has a front structure and sleeve structures on both sides as a whole.

An upper frame 1 as a member forming a front structure and a lattice bar 2 are also connected to a cubic 3 as a member. Reference numeral 4 is an upper frame of the sleeve structure, and reference numeral 5 is a cap attached to the top of the upright 3. Each of the upper frame 1, the lattice bars 2 and the cubic 3 is an extruded aluminum alloy material.

The upper frame 1 has a middle wall 6 in cross section, and tapping holes 8 and 9 are formed in the middle wall 6 and the bottom wall 7. The upright 3 side of the upper frame 1 is an end face cut at 45 ° in a plan view so as to make a fastening connection. The grid rail 2 is a rail horizontally arranged, has a hexagonal cross section as shown in FIG. 1, and tapping holes 12 and 13 are formed in the longitudinal direction on the inner surfaces of the upper wall 10 and the bottom wall 11. Similar to the upper frame 1, the vertical 3 side is an end face cut at 45 ° in a plan view so as to make a fastening connection.

As shown in FIG. 2, the cube 3 has a right-angled triangular cross-sectional shape as a whole, and the side surface corresponding to the hypotenuse is the front contact surface 14, and the side surface corresponding to the bottom is the contact surface on the sleeve structure side. It is placed as 15. A pair of through holes 16 for screws and through holes 17 for engaging projections are formed on the contact surface 14 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, respectively. It is formed. A slit 19 (FIG. 1) is formed on the side surface 18 corresponding to the vertical side, and the eye plate 20 is attached thereto.

A tapping screw 21 and a rotation stopper 22 (FIG. 1) are used to fix the upper frame 1 and the upright 3. The rotation stopper 22 is made of a thick metal plate and is composed of a vertical seat plate 23 and a horizontally bent engaging projection 24 below the seat plate 23. The seat plate 23 has a through hole through which the tapping screw 21 passes. 25 are formed. The distance between the through hole 25 and the engaging projection 24 is equal to the distance between the tapping holes 8 and 9 in the upper frame 1 in this embodiment.

The upper frame 1 and the upright 3 are assembled as follows. The end surface of the upper frame 1 is brought into contact with the front contact surface 14 of the upright 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 upright 3.

The engaging projection 24 of the rotation stopper 22 is passed through the engaging projection through hole 17 formed in the front contact surface 14, and the tip is brought into the tapping hole 9 in the bottom wall 7 of the upper frame 1. Plug in. Thereby, the upper frame 1 and the upright 3 are engaged. Then, the tip end is screwed into the tapping hole 8 of the inner wall 6 by passing the tapping screw 21 through the screw through hole 16 of the contact surface 14. Tighten the tapping screw 21 and pull the upper frame 1 toward the vertical 3 side. As a result, the upper frame 1 is connected to the cube 3.

In this structure, when the tapping screw 21 is tightened, the upper frame 1 is already engaged with the upright 3 by the engaging protrusion 24 of the rotation stopper 22, so that the upper frame 1 together with the tapping screw 21. Since it is engaged with the cuboid 3 at two points, it will not rotate even if a powerful tool such as an air screwdriver is used. Further, since the seat plate 23 of the rotation stopper 22 is fixed to the upright 3 together with the tapping screw 21 and does not fall off, it is not rotated by hand after the upper frame 1 is fixed. Further, the attachment of the rotation stopper 22 is simple because the engaging projection 24 is simply pierced through the through hole 17 for the engaging projection of the upright 3.

The connecting structure of the lattice bars 2 and the cubic 3 is similar to that of the upper frame 1. That is, the rotation stopper 22 and the tapping screw 21 are fitted into the slits 19 of the upright 3, and the engaging projection 24 of the rotation stopper 22 is inserted from the engaging projection through hole 17 of the upright 3 to the bottom wall of the lattice bar 2. The tapping holes 13 in 11 are engaged with each other, and then the tapping screws 21 passed through the through holes 25 of the seat plate 23 in the rotation stopper 22 are screwed into the tapping holes 12 in the upper wall 10 of the grid bar 2.

After all the grid bars 2 have been attached in this manner, the eye plate 20 is attached to the slits 19 of the cube 3. As the surface lattice, the front structure is assembled after the sleeve structure is assembled to the cube 3.

FIG. 3 shows a case where the upright 3 is slenderly constructed in the second embodiment, and shows a portion in which the upper frame 1 of the front structure and the upper frame 4 of the sleeve structure are connected to the upright 3. There is. The ends of both upper frames 1 and 4 are fixedly connected to the upright 3 at 45 °. The upright 3 is divided into a front side portion 3a and a sleeve side portion 3b, and fixed to the sleeve side upper frame 4 and the front side upper frame 1 by tapping screws 21. At the time of fixing with the tapping screw 21, the rotation stopper 22 is used as in the case of the first embodiment, and the engaging protrusion 24 of the rotation stopper 22 is set upright with the upper frame side before tightening with the tapping screw 21. They are engaged and cannot rotate relative to each other.

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

The above is an embodiment, and the present invention is not limited to the specific configuration shown in the drawings, and can be applied to a general connecting structure in which members are connected by screwing in addition to the surface lattice. The screw is not limited to the tapping screw 21, but may be a screw or the like. Further, the engaging projections 24 of the detents 22 attached to the upright 3 are used not only for the tapping holes 8, 9, 12, 13 on the end faces of the upper frames 1, 4 or the lattice bars 2 but also for engaging. It may be engaged between the formed protrusions or a gap that is not specifically for engagement but is available on the end face of the member. That is, the engagement protrusion 24 is engaged with the engagement portion provided at the end of the first member such as the upper frame 1.

[0021]

[Effect of device]

 When the end surface of the first member is abutted against the second member and is joined from the second member side with a screw, the first member does not rotate and the work is easy. It also does not rotate after installation.

The detent does not fall off during and after mounting.

[Brief description of 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]

 1 Upper Frame 2 Lattice Bar 3 Cubic 8 Tapping Hole 9 Tapping Hole 21 Tapping Screw 22 Rotation Stopper 23 Seat Plate 24 Engagement Projection 25 Through Hole

Claims (1)

[Scope of utility model registration request] 1. A structure in which a first member and a second member are fixed by using a rotation stopper and a screw, and the rotation stopper protrudes from a seat plate provided with a screw through hole and a seat plate. The engaging projection is configured such that the end surface of the first member is abutted against the side surface of the second member, and the engaging projection of the rotation stopper is formed by penetrating the side surface from the side of the second member. The member connecting structure characterized in that the first member and the second member are screwed with a screw penetrating the screw through hole by engaging with an engaging portion provided at an end of the member.