JPH04131512A - Connector of structural member - Google Patents

Abstract

PURPOSE:To reduce the number of parts and cost by connecting a first and second structural members through a coupling anchor to each other and inserting a pressing member in a recess of the coupling anchor to make an inclined surface of the pressing member slide on an inclined surface of the coupling anchor for connectively pressing both first and second structural members to each other. CONSTITUTION:A first structural member 9 has a locking groove 10 and a second structural member 11 is provided with a pressing member inserting hole 13 communicating to the central hole 12. In the assemblage, a shaft body 2 of a coupling anchor 30 is first inserted in the central hole 12 of the second structural member 11, and a pressing member 6 is inserted in the pressing member inserting hole 13 and a recess 3 of the shaft body 2. Next, a hook part 1 of the coupling anchor 30 is received in the locking groove 10 and a fastener 8 is inserted in a fastener inserting hole 7 of the pressing member 6 to be screwed into a threaded hole 5 of the recess 3. Then, an inclined surface 6a of the pressing member 6 slides on an inclined surface of the shaft body 2 of the coupling anchor 30 so that the anchor 30 is moved to press the first structural member 9 against the second structural member 11 to interconnect both members 9, 11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a connecting device for structural members that is easy to assemble and disassemble.

BACKGROUND OF THE INVENTION Conventional structural members will be described below with reference to the drawings.

FIG. 5, FIG. 6, and FIG. 7 show a first conventional example of a connecting device for structural members. In the figure, 14 is a coupling fitting, 15 is a bolt, 16 is a square nut, 17 is a structural frame c, and 18 is a structural frame d.

The structural frame c17 and the structural frame d18 have grooves on their outer peripheries and receive the square nands 16 therein. The coupling fitting 14 has a chopstick shape with bolt holes provided on each side. The connecting fitting 14 and the structural frame c17 and the structural frame d18 are sequentially connected by the bolts 15 and the square cross-sections 6, and the structural frame c17 and the structural frame d18 are connected perpendicularly to each other.

FIG. 8 shows a second conventional example of a connecting device for structural members. In FIG. 8, 19 is a coupling anchor, 20 is a sleeve, 21 is a structural frame e, 22 is a structural frame f, 23 is a machined hole (on both sides of the structural frame e),
24 is a lock bolt, and 25 is a screw.

The sleeve 20 is inserted into the groove of the structural frame e21, and the lock bolt 24 is inserted into the horizontal hole of the sleeve 20 through the machined hole 23. The coupling anchor 19 is then inserted into the sleeve 20. Then, when the screw 25 is passed through the lock bolt 24 and tightened, the coupling anchor 19 can slide within the sleeve 20 only by the recessed portion of the coupling anchor 19. On the other hand, when the hook portion of the coupling anchor 19 is received in a predetermined position in the outer groove of the structural frame f22 and the screw 25 is tightened, the structural frame e21 and the structural frame f22 are coupled.

Problems to be Solved by the Invention However, the structure of the first conventional example not only requires a large number of parts (and thus increases cost), but also requires the bolt 15 to be connected to the connecting fitting 14.
The work of temporarily screwing together the square nut 16 through the bolt through hole, receiving the square nut 16 in the groove on the outer periphery of the structural frame, setting it in a predetermined position, and tightening the bolt 15 is troublesome and time-consuming; There is a problem in that the coupling fittings 14 are visible on the outside and spoil the aesthetic appearance.

The second conventional example has the advantage of being able to reduce the number of parts and work man-hours compared to the first conventional example, but it requires four parts as a coupling device and only one machined hole 23 is required. 1 on both sides of the structural frame for the bonding anchors 19
It is necessary to provide each one individually, which is still disadvantageous in terms of aesthetics due to the number of parts.

Furthermore, in the second conventional example, the tip of the screw 25 bites into the recess of the coupling anchor 19, making it difficult for the coupling anchor 19 to slide smoothly, resulting in insufficient bonding force between the side structural frames 21 and 22. In addition, the concave portion of the coupling anchor 19 and the tip of the screw 25 are easily damaged, and there is a problem in durability when repeatedly assembled and disassembled.

The present invention is intended to solve the above-mentioned problems of the conventional example, and reduces costs by reducing the number of parts and work man-hours, is easy to assemble and disassemble, has excellent durability, and has a connecting metal fitting that can be seen from the outside. It is an object of the present invention to provide a joining device for structural members that can improve the aesthetic appearance by reducing the number of processed holes.

Means for Solving the Problems In order to solve the above problems, the present invention provides a first structural member having a locking groove and a second structural member having a central hole, the locking groove and the central hole being connected to each other. In the structure in which the second structural member is connected by being pressed and held in an intersecting state, a vertical pressing member insertion hole is formed in the second structural member and continues to the central hole, and a hook portion received in the locking groove and the central hole are connected to each other. and a coupling anchor having a recess having an inclined surface at one end formed at a location corresponding to the pressing member insertion hole in the shaft part, and a screw hole provided in the recess. , a pressing member having a fastener insertion hole and an inclined surface that is inserted into the recess of the shaft body portion of the coupling anchor and is movably guided in the axial direction and comes into contact with the inclined surface, the fastener insertion hole; a fastener having a screw shaft portion that is screwed into the screw hole inserted with a play gap in the screw hole and a head larger than the diameter of the fastener insertion hole, the first structural member and the second structural member and a direction in which the pressing member is brought into pressure contact with the first structural member and the second structural member by sliding between the inclined surface of the pressing member and the inclined surface of the connecting anchor. The present invention is characterized in that, in the above configuration, first, the shaft portion 2 of the coupling anchor 30 is inserted into the central hole 12 of the second structural member 11. death,
The pressing member 6 is inserted into the pressing member insertion hole 13 of the second structural member 11.
and the recess 3 of the shaft portion 2 of the coupling anchor 30,
Next, the fastener 8 is screwed into the screw hole 5 of the recess 3 through the fastener insertion hole 7 of the pressing member 6. At this time, the pressing member 6 is moved in the recess 3 by the amount of play between the diameter of the fastener insertion hole 7 and the diameter of the screw shaft portion 8a of the fastener 8.
It is movable in the axial direction of the shaft body part 2. In this state, the hook portion 1 of the coupling anchor 30 is received in a predetermined position in the locking groove 10 of the first structural member 9, and the fastener 8 is fastened. Due to this fastening, the pressing member 6, which was movable within the recess 3 as described above, slides between the inclined surface 6a of the pressing member 6 and the inclined surface of the shaft body portion 2 of the connecting anchor 30, thereby pushing the connecting anchor 30. The first structural member 9 is moved in a direction in which it is brought into pressure contact with the second structural member 11 to connect both members.

Embodiments Examples of the present invention will be described below with reference to the drawings.

The structural member connecting device of the present invention includes a first structural member 9,
The second structural member 11 is connected to the coupling anchor 30 and the pressing member 6.
and a fastener 8, one embodiment of which is shown in FIGS. 1 to 5.

Both the first structural member 9 and the second structural member 11 are
As shown in the cross section in the figure, it has a locking groove 10 and a central hole 12. The second structural member 11 is provided with a vertical pressing member insertion hole 13 connected to the central hole 12 thereof.

The coupling anchor 30 has a hook part 1 received in a locking groove 10 of the first structural member 9 and a central hole 12 of the second structural member 11.
A shaft body portion 2 inserted into the shaft body portion 2 is integrated with the shaft body portion 2, and a recess portion 3 is formed in one side of the shaft body portion 2. As shown in FIG. 1, the end face of the recess 3 on the side far from the hook part 1 is provided with an inclined surface 4 which is inclined toward the axis of the shaft body part 2 as it approaches the hook part 1. It is being Further, a screw hole 5 having an axis perpendicular to the axis of the shaft body portion 2 is provided at the bottom of the recess 3 . The pressing member 6 has the same outer periphery as the pressing member insertion hole 13, and has a hook portion l.
The end face on the far side has an inclined surface 6a that contacts and slides on the inclined surface 4. The pressing member 6 is further provided with a fastener insertion hole 7 in the center thereof, through which the fastener 8 is passed. The fastener 8 has a screw shaft portion 8a and a head 8b, and the fastener 8a has a free space between it and the fastener insertion hole 7, and is screwed into the screw hole 5. Further, this head 8b has a diameter larger than the diameter of the fastener insertion hole 7.

Regarding the structural member connecting device configured as above,
The assembly and disassembly method will be explained.

First, in assembly, the shaft portion 2 of the coupling anchor 30 is inserted into the central hole 12 of the second structural member 11. Next, the insertion member 6 is inserted into the pressing member insertion hole 13 of the second structural member 11 and the recess 3 of the shaft portion 2 so that the inclined surface 6a of the pressing member 6 contacts the inclined surface 4 of the recess 3. At this time, the pressing member 6 is held in the pressing member insertion hole 13 and is movable in the axial direction of the shaft portion 2 within the recess 3 of the shaft portion 2. Subsequently, the fastener 8 is screwed into the screw hole 5 of the recess 3 of the shaft portion 2 through the fastener insertion hole 7 of the pressing member 6. At this time, the pressing member 6 moves in the axial direction of the shaft portion 2 within the recess 3 by the play gap between the diameter of the fastener insertion hole 7 and the diameter of the screw shaft portion 8a of the fastener 8. Become free. In this state, as shown in FIG. 2(a), the gap 31 between the first structural member 9 and the second structural member 11 can be changed by the amount of the free gap. Locking groove 1
0 can be easily received in the predetermined position. As described above, the hook portion 1 is attached to the locking groove 1 of the first structural member 9.
0, the fastener 8 is tightened. In this way, the inclined surface 6a of the pressing member 6 and the inclined surface 4 of the recess 3 of the shaft body portion 2 slide in response to the tightening of the fastener 8, and as a result, the coupling anchor 30 is moved to the first structure. The member 9 is moved in a direction in which it is brought into pressure contact with the second structural member 11, and both structural members are connected as shown in FIG. 2(b). In the second case, this movement is performed extremely smoothly by sliding of the inclined surfaces 6a and 4, and this pressure contact is reliably performed by tightening the fastener 8, which leads to insufficient bonding force and insufficient durability in the second conventional example. can solve the problem.

Decomposition is performed in the reverse order as described above. Even if this assembly and disassembly is repeated, the assembly and disassembly of the present invention is easily and smoothly performed, and the connection is reliable and durable.

As described above, in the present invention, since the screw hole 5 is provided in the shaft body portion 2, a large number of bolts and nuts are not required compared to the first conventional example, resulting in a reduction in the number of parts and an improvement in workability. Also, compared to the second conventional example, the present invention only requires one pressing member insertion hole 13 instead of the two machined holes 23 in the second conventional example, which reduces the number of parts rather than improving the aesthetic appearance of the scale. This also reduces the amount of waste and improves work efficiency.

In the above embodiment, the locking groove 10 and the center hole 12 are perpendicular to each other, but they do not need to be perpendicular to each other as long as they intersect. Also, the direction of the hook part 1 and the shaft body part 2
The relationship between the direction of the recess 3 and the screw hole 5 can also be freely selected depending on the shapes of the first and second structural members 9.11.

Effects of the Invention As described above, the structural member connecting device according to the present invention reduces the number of parts, reduces costs, can be assembled and disassembled in a shorter time, and has excellent durability and reliability even when repeatedly assembled and disassembled. This has the effect of improving the appearance by reducing the number of fastening tools and their insertion holes that are visible from the outside.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a connecting device for structural members according to an embodiment of the present invention, and Fig. 2 is a sectional view illustrating the mechanism of pressure welding, where (a) shows the state before pressure welding, and (b) shows the state after pressure welding. 3 is a sectional view of the structural member, FIG. 4 is a partially sectional perspective view showing a connecting portion, FIG. 5 is a partially cutaway front view of the first conventional structure member coupling device, and FIG. FIG. 7 is a sectional view of the structural frame, FIG. 7 is a perspective view of a connecting portion thereof, and FIG. 8 is an exploded perspective view of a second conventional structural member connecting device.

Claims (1)

[Claims] (1) A first structural member having a locking groove and a second structural member having a central hole are connected by being pressed and held in a state where the locking groove and the central hole intersect, A vertical pressing member insertion hole is formed in the second structural member that is continuous with the central hole, the hook portion is received in the locking groove, and the shaft body portion is inserted into the central hole. A coupling anchor is provided in which a recess having an inclined surface at one end is formed at a location corresponding to the pressing member insertion hole of the shaft portion, and a screw hole is provided in the recess;
a pressing member that is inserted into the recess of the shaft portion of the coupling anchor and is movably guided in the axial direction thereof and has a fastener insertion hole and an inclined surface that contacts the inclined surface; a fastener having a screw shaft inserted with a play gap and screwed into the screw hole, and a head larger than the diameter of the fastener insertion hole, the first structural member and the second structural member The pressing member is inserted into the pressing member insertion hole and the recess, the fastener is fastened, and the sliding between the inclined surface of the pressing member and the inclined surface of the connecting anchor completes the connection. A device for connecting structural members, characterized in that the anchor is moved in a direction to bring the anchor into pressure contact with the first structural member and the second structural member to connect the two structural members.