JPH0224967Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a connecting device that can extremely easily connect two members to be connected.

[Conventional technology]

A conventional coupling device of this type will be explained with reference to FIGS. 5 to 7. In each figure, 1 and 2 are connected members, 1a and 2a are connected members 1,
As will be described later, mounting brackets 3 and 4 are housed in both joint surfaces 1a and 2a, respectively, and both mounting brackets 3 and 4 are tightened with bolts 5 and nuts 6 to connect members to be connected. Recesses 7 and 8 are formed to allow insertion of a jig (not shown) when connecting 1 and 2.

That is, one connected member 1 has a recessed portion 7 that allows insertion of a jig, and steps 7a on both sides of the recessed portion 7.
7a is formed. Further, the stepped portions 7a, 7a
, there are side plates 3 attached to the back side of both sides of the mounting bracket 3.
a, 3a, and the anchor muscle 3 connected to these
b, 3b are buried, and these side plates 3a, 3
a and the mounting bracket 3 via the anchor bars 3b, 3b.
is fixed across the stepped portions 1a, 1a.
At the time of fixing, the surface of the mounting bracket 3 has a stepped portion 7a,
7a, it is configured to reliably match the joint surface 1a. Furthermore, as is clear from each figure, the above-mentioned one connected member 1 also applies to the other connected member 2.
Similarly, the mounting bracket 4 is attached to the stepped portions 8a, 8 of the recessed portion 8.
a and is fixed via side plates 4a, 4a and anchor bars 4b, 4b. Furthermore, holes 3c and 4c are formed in the mounting fittings 3 and 4, respectively, and are located at the center of each recessed portion 7 and 8, so that a bolt 5 can be inserted therethrough.

However, in order to connect one connected member 1 to the other connected member 2, the respective joint surfaces 1a, 2
holes 3c and 4 of each mounting bracket 3 and 4 with the holes 3c and 4 arranged facing each other
overlap them so that they match, and insert bolt 5 into hole 3.
c and 4c and tighten the nut 6 with a jig to connect the two.

[Problem that the invention attempts to solve]

However, when the connected members 1 and 2 are connected by a conventional connecting device, when a tensile force is applied to one or both in the X and Y directions as shown in FIG. 7, the mounting bracket 3 , 4 are both curved to form a gap δ ₁ between the joint surfaces 1a and 2a of the connected members, which greatly impairs the sealing properties of the structure in which the connected members 1 and 2 are the constituent units, or This may cause excessive deformation of the structure and cause various problems.

This invention was made in view of the above problems, and even if tensile force is applied after connection,
The above-mentioned disadvantages can be alleviated by suppressing the bending deformation of the mounting fittings 3 and 4 as much as possible, and the weight of the steel material used as the connecting device can be reduced, and furthermore, the connection can be easily aligned during the connecting work of the connected members 1 and 2. The purpose is to obtain equipment.

[Means for solving problems]

In order to achieve the above-mentioned purpose in this invention,
A recess formed on the joint surface of one of the connected members to allow insertion of a jig, a step formed on both sides of this recess, and an anchor spanned over and embedded in the step. a first flat metal fitting fixed via the recess, a recess formed in the joint surface of the other connected member to be connected to the one connected member; a second flat metal fitting that is smaller than the first flat metal fitting that overlaps with the flat metal fitting; and a substantially cylindrical metal fitting that is attached to the non-overlapping surface of the second flat metal fitting and buried in the recess. A long nut insert, a rod-shaped anchor wire connected to the end of the long nut insert and embedded in the recess, and a rod-shaped anchor thread that passes through the first and second flat metal fittings and is screwed to the long nut insert. The connecting device is comprised of a bolt that connects the first and second flat metal fittings, and a positioning hole that is bored in the first and second flat metal fittings and is adjacent to the bolt through hole. There is.

[Effect]

According to the present invention, one of the connecting members does not have a concave part, but instead has a flat metal fitting exposed on the joint surface and is fixed via a long nut insert, and the bolt is tightened to this long nut insert. Therefore, the flat metal fitting does not deform even if a tensile force is applied to the connecting member. Further, since holes are provided in both flat metal fittings and the connecting members are aligned using these holes, the connecting work is extremely facilitated. Moreover, since one of the connecting members is constructed of only the long nut insert and the flat metal fitting as described above, it is possible to achieve a significant reduction in the weight of the steel used.

〔Example〕

The present invention will be explained below based on the embodiments shown in FIGS. 1 to 4. For convenience of explanation, parts that are the same as or equivalent to the conventional ones are given the same reference numerals, and the explanation thereof will be omitted. As is clear from the above figures, the device of this embodiment has a connecting device attached to one connected member 1, that is, a mounting fitting (first flat metal fitting) 3, a side plate 3a, and an anchor bar 3b. Since the configuration is the same as the conventional one except that the mounting bracket 3 has a hole 3d for positioning, a description will be given of the connecting device that is attached to the other connected member 2.

A recess 2b is formed in the joint surface 2a of the other connected member 2 to accommodate a flat mounting fitting (second flat fitting) 4 smaller than the mounting fitting 3. A metal fitting 4 is fixed via a long nut insert 9 and an anchor muscle 9a. In other words,
A cylindrical long nut insert 9 and a rod-shaped anchor bar 9a connected to the cylindrical long nut insert 9 are attached to the back surface of the mounting bracket 4.
By embedding the anchor bars 9a in the connected member 2, the mounting bracket 4 is exposed on the joint surface 2a and fixed. Of course, the surface of the mounting bracket 4 is fixed to the joint surface 2a by the recess 2b so as to form the same plane, and the female thread of the long nut insert 9 is inserted through the bolt hole 3c of the mounting bracket 4. It is exposed.

Furthermore, each bolt hole 4c, 3 of the mounting brackets 4 and 3
Positioning holes 4d and 3d located next to c are formed as shown in FIG. 2 and FIG.
4 can be confirmed by the holes 3d and 4d.

However, in order to connect one connected member 1 to the other connected member 2, first arrange the joint surfaces 1a and 2a facing each other, overlap the mounting brackets 3 and 4, and then , 4 alignment hole 3
After confirming that d and 4d match, the bolt 5 is inserted into the bolt hole 3c and tightened to the female thread of the long nut insert 9 using a jig, thereby connecting the members 1 and 2 to be connected. Therefore, according to the device of this embodiment, since each member to be connected 1 and 2 can be aligned and connected, it is possible to connect the connected members 1 and 2, which are other structural units, as in the past. Positioning can be performed easily and quickly without considering the relationship, and connection work can be performed extremely easily.

Furthermore, even if a tensile force as shown in FIG. 4 acts after connection, in the case of the mounting bracket 4 with the long nut insert 9 attached, the tensile force will not act on the long nut insert 9 at the center of the surface. Therefore, only one mounting bracket 3 deforms to form only the gap δ ₂ , and the mounting bracket 4 does not deform as in the conventional case, so that only one mounting bracket 3 bears the deformation. , the amount of deformation is significantly reduced compared to the conventional one.

Furthermore, in the device of this embodiment, the mounting bracket 4 of one of the coupling devices is housed and fixed in the recess 2a formed in the joint surface 2a of the connected members, so that its mechanical strength can be reduced. Furthermore, since the mounting bracket 4, which is smaller than the mounting bracket 3, is fixed by the long nut insert 9 and the anchor bar 9a that are attached only to the center of the back surface, the weight of the steel used can be significantly reduced. There is an economic advantage to being able to do so.

In the above embodiment, the means for connecting the anchor bar 9a to the long nut insert 9 is to screw the male thread of the anchor bar 9a into the female thread of the long nut insert 9, but it is not possible to connect these by, for example, welding. Other connection means can be used, such as.

[Effects of the invention] As described above, according to the invention, there is a recess formed on the joint surface of one of the connected members to allow insertion of the jig, and steps formed on both sides of the recess. a first flat metal fitting that spans the stepped portion and is fixed via an anchor embedded in the stepped portion;
a recess formed in the joint surface of the other connected member to be connected to the one connected member; and a first plate-like metal fitting that is accommodated in the recess and overlaps the first flat metal fitting.
a second flat metal fitting smaller than the flat metal fitting;
a substantially cylindrical long nut insert attached to the non-overlapping surface of the second flat metal fitting and buried in the recess;
A rod-shaped anchor wire is connected to the end of the long nut insert and buried in the recess, and a rod-like anchor wire is screwed to the long nut insert through the first and second flat metal fittings. Since the connecting device is composed of a bolt that connects the flat metal fittings and a hole for positioning that is drilled in the first and second flat metal fittings and is adjacent to the bolt through hole, it can be connected extremely easily and quickly. The connecting members can be connected to each other and are stable against tensile force after being connected. Furthermore, since the connecting device is simplified, a significant reduction in the weight of the steel used can be achieved.

[Brief explanation of drawings]

1 to 4 are views showing one embodiment of the coupling device according to the present invention, in which FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line -- in FIG. A plan view of the main parts of the embodiment device, FIG. 4 is a view corresponding to FIG. 2, and is an explanatory diagram showing a state in which tensile force is applied to the connected members;
FIGS. 5 to 7 are diagrams showing conventional devices,
Figure 5 is a diagram equivalent to Figure 1, Figure 6 is a diagram equivalent to Figure 2,
FIG. 7 is a diagram corresponding to FIG. 4. In the figure, 1 and 2 are connecting members, 1a and 2a are joint surfaces, 3 is a mounting fitting (first flat metal fitting), 3
b is an anchor, 3d and 4d are holes (for positioning),
4 is a mounting fitting (second flat metal fitting), 7 is a recessed part,
7a is a stepped portion, 9 is a long nut insert, and 9a is an anchor thread. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A recess formed on the joint surface of one of the connected members to allow insertion of a jig, a step formed on both sides of this recess, and an anchor spanned over and embedded in the step. a first flat metal fitting fixed via the recess, a recess formed in the joint surface of the other connected member to be connected to the one connected member; a second flat metal fitting that is smaller than the first flat metal fitting that overlaps with the flat metal fitting; and a substantially cylindrical metal fitting that is attached to the non-overlapping surface of the second flat metal fitting and buried in the recess. A long nut insert, a rod-shaped anchor wire connected to the end of the long nut insert and embedded in the recess, and a rod-shaped anchor thread that passes through the first and second flat metal fittings and is screwed to the long nut insert. A connecting device comprising: a bolt that connects the first and second flat metal fittings; and a positioning hole drilled in the first and second flat metal fittings and adjacent to the bolt through hole. .