JPH0518022A - Joint device in structure - Google Patents

Abstract

PURPOSE:To make it possible to easily and speedily connect a pair of hollow structural members to each other by using a frame member inserted between a pair of structural members to transfer shearing force and a pair of plate-like members. CONSTITUTION:A joint device 11 is inserted into hollow sections of a pair of structural members to be connected in a state to contract jack devices 15 and 16. At that time, it is so inserted that a frame member 12 is positioned in the hollow section. After that, screw shaft bodies 35 of the jack devices 15 on both sides are rotated to separate up and down plate-like members 14, and locking plates 13 are locked with projection members inside the structural members. Then, in the same way, a jack device 16 is operated to recess the central parts of the plate-like members 14, both ends are associated with each other, and both structural members are connected firmly to each other through the plate-like members 14 as a unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint device for a structure.

[0002]

2. Description of the Related Art Conventionally, when constructing a structure quickly and manually in the field, as shown in FIG. 5, a frame 51, which is a framework of the structure, is divided into a plurality of structural members 52. Then, these structural members 52 were assembled together by interposing connecting metal fittings 53.

As shown in FIG. 6, the connecting fitting 53 is, for example, fitted in the hollow portion 52a of the divided structural member 52 to connect the structural members 52 on both sides to each other.

[0004]

However, the shape of the conventional connecting fitting 53 is formed in advance so that it can be fitted into the hollow portion 52a of the structural member 52 to be connected. Therefore, it is necessary to manufacture the structure member 52 to be slightly smaller than the hollow portion 52a.

Therefore, as indicated by the phantom line in FIG. 7, there is a problem that the joint portion of the structural member 52 is deformed when an external force is applied thereto. Further, in order to prevent such deformation, the size of the connecting fitting 53 is made to match the hollow portion 52a of the structural member 52, that is, a gap is created between the fitted connecting fitting 53 and the hollow portion 52a. If it is manufactured so as not to exist and to be deeply inserted, it becomes difficult to fit it into the structural member 52, which causes a problem that the structure cannot be quickly assembled.

Therefore, an object of the present invention is to provide a joint device for a structure which can solve the above problems.

[0007]

In order to solve the above-mentioned problems, in the joint device in the structure of the present invention, both end parts are inserted into the hollow part of the structural member whose end part is hollow so that both structural members are connected. A joint device to be integrated, wherein a frame member is inserted into a hollow portion of opposite end portions of both structural members, and the frame member is inserted through the frame member and arranged in parallel with each other. A pair of plate-like members each having an engaged portion provided on an inner surface of the member and an engaging portion that can be engaged and disengaged, and a screw-type first jack device for moving both end portions of these plate-like members toward and away from each other. And a screw type second jack device which is disposed in the frame member and causes the central portions of the pair of plate-shaped members to approach and separate from each other.

[0008]

In the above structure, when the structural members are connected to each other, first, the joint devices are inserted into the hollow portions of both structural members to be connected while the jack devices are contracted. Next, for example, the first jack devices on both sides are actuated through the holes formed on the side surfaces of each structural member to separate the pair of plate-shaped members from each other, and at the same time, provided on each plate-shaped member. The joint portion is engaged with the engaged portion provided on the structural member. Next, the second jack device is operated to bring the central portions of the pair of plate-shaped members close to each other. Then, since the central portion of the plate-shaped member is recessed, the both ends approach each other, and therefore both structural members are firmly connected via the pair of plate-shaped members.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIGS. 1 and 2, reference numeral 11 denotes a joint device that integrates both structural members 1 by inserting both ends into a hollow portion 1a of a structural member 1 having hollow ends. The frame member 12 having a predetermined width and having a rectangular cross section, which is fitted into the portion 1a, is inserted through the frame member 12 and arranged in parallel with each other, and the structural members 1 are formed on the outer surfaces of both ends. A pair of upper and lower plate-shaped members 14 each having a square tooth-shaped projection plate (engaged portion) 2 attached to the inner surface of the
And a pair of pantograph-type first jack devices 15 arranged between the end portions of these plate-like members 14 so as to bring the both ends close to and away from each other, and the upper and lower plate-like members arranged in the frame member 12. The second jack device 16 is of a pantograph type for moving the central portions of 14 closer to and away from each other.

Each of the pantograph-type jack devices 15 and 16 has four link members 32 assembled in a rhombus shape by connecting pins 31, connecting members 33 and 34 attached to the connecting pins 31 on the left and right, A screw shaft body 35, one end of which is threadedly inserted into one of the connecting bodies 33 and the other end of which is rotatably connected to the other connecting body 34, and a rotation drive attached to one end of the screw shaft body 35. And a connecting bracket 17 formed on the inner surface of each plate-shaped member 14 is connected to the connecting pin 31 at the upper and lower positions.

Therefore, when the screw shaft body 35 is rotated via the nut portion 36, the connecting bodies 33 and 34 on both sides move closer to each other, and the upper and lower connecting pins 31 move closer to each other. That is, the upper and lower plate-shaped members 14 are moved toward and away from each other. A hole 12a is formed in the frame member 12 to rotate the nut portion 36 of the second jack device 16.

The screw shafts 35 of the jack devices 15 and 16 are inserted and supported by support plates 19 and 20 attached to the side plates 18 fixed to the frame member 12, respectively. That is, the jack devices 15 and 16 are
It is supported on the frame member 12 side via support plates 19 and 20, and the upper and lower plate-shaped members 14 are jack devices 15 and 1.
6, the plate-shaped member 14 is also supported on the frame member 12 side.

Next, the work of connecting the structural members 1 to each other will be described. First, the jack devices 15 and 16 are respectively contracted, and in this state, the joint device 11
Are inserted into the hollow portions 1a of both structural members 1 to be connected. At this time, the frame member 12 is inserted so as to be located in the hollow portions 1a of both structural members 1. Therefore, both structural members 1 are provisionally connected to both sides of the frame member 12 via the frame member 12.

Next, as shown in FIG. 3, the socket 21a of the screwdriver device 21 such as a socket wrench is inserted through the notch 1b formed on the side surface of each structural member 1.
Then, the screw shafts 35 of the first jack devices 15 on both sides are rotated to separate the upper and lower plate-like members 14 from each other, and the engaging plates 13 provided on the outer surface of each plate-like member 14 are connected to the structural member. A projecting member 2 provided on the inner surface of 1.
Engage with.

Next, the screw shaft body 35 of the second jack device 16 arranged inside the frame member 12 is rotated by the screwdriver device 21 in the same manner as described above, and the upper and lower plate-shaped members 14 are rotated.
Bring the central parts of each other closer to each other. Then, as shown in FIG. 4, since the central portion of the plate-shaped member 14 is recessed, both end portions come close to each other, and thus both structural members 1 are firmly connected via the pair of plate-shaped members 14.

In this way, when the structural members 1 on both sides are firmly connected via the pair of plate-shaped members 14, when an axial force acts on the structural member 1, the axial force is the same as that of the pair of plate members. It is transmitted by the plate member 14, and when a shearing force is applied to the structural member 1, it is transmitted by the frame member 12. Since the bending moment is decomposed into a shearing force and an axial force, it can be transmitted without any problem by the frame member 12 and the pair of plate-shaped members 14.

Of course, the size of the frame member 12 is the same as that of the structural member 1.
When it is inserted into the hollow portion 1a, no gap is formed between it and the structural member 1, and its axial width is such that it can be easily inserted into the hollow portion 1a. In addition, it is made as short as possible so as not to hinder the transmission of shearing force.

By the way, in the above-mentioned embodiment, the pair of plate-like members 14 are arranged vertically, but the same effect can be obtained even if they are arranged horizontally.

[0019]

As described above, according to the structure of the present invention, the joint device is provided between both structural members and the frame member which is inserted between the structural members and transmits the shearing force so as to be movable toward and away from each other. Since it is configured by a pair of plate-shaped members that transmit and receive the axial force by having the engageable and disengageable portions that are engaged with each other, the shearing force, the axial force, and the bending moment are Unlike those that are transmitted by connecting metal fittings, for example, a frame member that requires manufacturing precision only needs to transmit shearing force, and therefore its length can be made extremely short, so that it is easy to produce and it also transmits axial force. Since the plate member can be easily inserted into the hollow portion of the structural member,
The connecting work can be performed very easily and quickly, and a strong joint structure can be obtained.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a joint device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a connected state of the joint device in the example.

FIG. 3 is a schematic perspective view showing an assembled state of the joint device in the example.

FIG. 4 is a cross-sectional view of an essential part for explaining the operation of the joint device according to the embodiment.

FIG. 5 is a schematic perspective view showing a use state of a connecting fitting in a conventional example.

FIG. 6 is a perspective view of an essential part showing a use state of a connecting fitting in a conventional example.

FIG. 7 is a side view showing a deformed state of a joint portion in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Structural member 1a Hollow part 2 Projection member 11 Joint device 12 Frame member 13 Engagement plate 14 Plate member 15 1st jack device 16 2nd jack device 31 Connecting pin 32 Link member 33,34 Connecting body 35 Screw shaft body

Claims (1)

Claim: What is claimed is: 1. A joint device for integrating both structural members by inserting both ends into a hollow portion of a structural member having hollow end portions, the opposing ends of the structural members being opposite to each other. And a frame member inserted into the hollow portion of the portion and arranged in parallel with each other by passing through the frame member, and freely engageable with and disengageable from the engaged portions provided on the inner surface of the structural member at both ends. Pair of plate-shaped members provided with various engaging portions, a screw-type first jack device for moving both ends of these plate-shaped members toward and away from each other, and the pair of plate-shaped members arranged in the frame member. A joint device for a structure, comprising a screw type second jack device for moving the central parts of the members closer to and apart from each other.