JPH03199703A - Connecting structure of mold member - Google Patents

Abstract

PURPOSE:To obtain a cheap and rigid connecting structure with good appearance by providing a nut unit, which can be inserted into both dovetail grooves between end parts of both mold members, and thread holes in the intermediate portion of a flange part of the nut unit, which protrudes with its possibility to freely rush into a slit part closely and screwing, in those holes, thread units adaptably to the internal parts of the dovetail grooves. CONSTITUTION:Dovetail grooves 10, having slit parts 11, are formed over the total length in the lengthwise direction of mold members 2, 1 of equal shape. A flange part 21, which can freely rush into the slip part closely 11, is protruded in the intermediate portion of a nut unit 20 which can be inserted into the dovetail groove 10 between end parts of both mold members 2, 1, and thread holes 22, 23 are formed in this flange part 21 so that thread units 24, 25 may be provided adaptably to a dovetail internal part 10a. Accordingly, the mold member, which can be connected rigidly without looseness, can be formed cheaply in good appearance can be with no protruding part from the external surface of the mold member.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a structure for connecting shapes, which is employed, for example, when connecting shapes to form a framework.

Conventional technology For example, Utility Model Application No. 55-1 was used to linearly connect molded materials in which dovetail grooves that are open to the outside are formed over the entire length in the longitudinal direction.
The structure of Publication No. 21859 is provided.

In this conventional structure, a hollow body is positioned between the interiors of a pair of linearly arranged shapes, and the hollow body is fastened with a plurality of screw members to a connecting member that is applied between the outer surfaces. By doing so, the connecting member and the hollow body squeeze the flange portion of the shape material, thereby performing the connection.

Problems to be Solved by the Invention According to the above-mentioned conventional type, since the connecting member and the hollow body are loosely fitted to the molding material, misalignment due to play between the two molding materials is likely to occur. Cannot perform concatenation. Furthermore, two members, a connecting member and a hollow body, are required, which makes handling cumbersome and expensive. Furthermore, the connecting member protrudes from the outer surface of the mold material, which not only looks bad but also tends to cause collisions with other objects or getting caught.

An object of the present invention is to provide a connecting structure for shapes that can automatically perform relative positioning, only require one long member, and can be connected without protruding from the outer surface of the shapes. .

Means for Solving the Problems In order to achieve the above object, the connecting structure of the molding materials in the present invention is a structure in which molding materials each having a dovetail groove that is open to the outside formed along the entire length thereof are connected in a straight line, The dovetail groove has a slit portion open to the outside formed by a pair of forming pieces,
A nut body that can be freely inserted between the ends of both molded pieces is provided across both dovetail grooves. A flange portion that can be inserted tightly into the slit portion is protruded outwardly, and a plurality of screw holes are provided in the middle portion of the nut body in an inward and outward direction, and the nut body is screwed into the screw holes. A screw body is provided at the back of the dovetail groove that can be freely contacted.

Furthermore, in the connecting structure of the shapes according to the second invention, the nut body has a flange portion cut out at both ends in the length direction, and a threaded hole in the inside and outside direction is provided through the cutout portion, and A ring-shaped spacer having a concave tapered outer surface that can be freely opposed to and removed from the outside is provided on the part, and a tapered receiving surface that can freely come into contact with the tapered outer surface is formed between the pair of forming pieces, A bolt body is provided that can be screwed into the screw hole through the spacer.

Operation In the structure of the first invention described above, the linear connection between the shapes 1 and 2 is performed as follows.

That is, first, with the screw body loosened, the nut body is slid into the dovetail end of the corresponding profile. During this insertion, the flange portion is thrust into the dovetail groove.

The screw body is then tightened to protrude inward and come into contact with the deep part of the dovetail groove, and further tightened to move the nut body outward. As a result, the outer surface of the side part is brought into pressure contact with the inner surface of the forming piece, so that both mold members and the nut body can be fixed. At this time, since the flanges protrude tightly into the slits of both molds, both molds and the nut body, that is, both molds, are fixed without relative displacement.

Furthermore, according to the configuration of the second invention described above, before tightening with the screw body, by tightening the bolt body passed through the spacer, the tapered outer surface is brought into pressure contact with the taper receiving surface. The nut body can be accurately positioned in the longitudinal direction. Further, by tightening the bolt body, the outer side surface of the nut body is brought into pressure contact with the inner surface of the forming piece, thereby making the connection between the two mold parts even stronger.

Example An embodiment of the present invention will be described below based on the drawings.

The pair of profile members 1.2 to be linearly connected have the same shape and are manufactured, for example, by pultrusion of aluminum. That is, the shape member 1.2 has a rectangular bar shape, and one or more dovetail grooves 10 that open outward are formed on each side over the entire length in the longitudinal direction. A slit portion 11 opened to the outside of the dovetail groove 10 is formed between a pair of forming pieces 12. At both ends in the length direction of both molded pieces 1 and 2, at positions inside by a predetermined dimension from the end faces 1a and 2a, tapered receiving surfaces 13 and 14 are provided on both forming pieces 1.
It is formed by counterbore machining etc. over 2 spaces. The nut body 20, which can be freely inserted into both the dovetail grooves 10 between the ends of the two profile members 1.2, has a long plate shape, and a long rectangular flange part 21 is removed from the outer surface of the intermediate part. It protrudes towards the side. Here, the width W1 of the flange portion 21 is the same as or slightly smaller than the width W2 of the slit portion 11, so that the flange portion 21 can freely protrude into the slit portion 11 in a dense manner. The width of the nut body 20 is larger than the width W1 of the flange portion 21, so that the outer surface of the side portion is aligned with the forming piece 12.
A pressing portion that can freely come into contact with the inner surface 12a of is formed on the surface 20a. A plurality (two in this embodiment) of screw holes 22.
23 extend inward and outward directions, and screw bodies 24 and 25 that are screwed into these screw holes 22 and 23 can freely come into contact with the dovetail inner part 10a. The nut body 20 has flange portions 21 removed at both ends in the length direction, and a screw extending in the inner and outer directions is provided in the removed portion and at a position opposite to the center of formation of the tapered receiving surfaces 13°14. Holes 26 and 27 are provided therethrough. A ring-shaped spacer 30.31 is provided in these screw holes 26.27 and has a tapered outer surface 28.29 in the form of a removable concave, which can be freely opposed from the outside and abutted against the tapered receiving surface 13. Spacer 3
A bolt body (such as a screw) 32.33 is provided through the screw hole 26.27 through the screw hole 26.27.

Next, the operation of connecting the shapes 1 and 2 in the above embodiment will be explained. First, insert the spacer 3 into the screw hole 26.27 of the nut body 20.
0.31 facing each other, and a bolt body 32.33 passed through the spacer 30.31 from the outside is screwed into the screw hole H, 27 for temporary fixing. At this time, the screw bodies 24, 25 are loosened outwardly. Next, the nut body 20 is inserted into the dovetail groove 1G at the end of the mold material 2. This insertion movement pushes the flange portion 21 into the slit portion 11. The insertion is continued until the spacer 31 faces the tapered receiving surface 14. If the bolt body 33 is tightened in this state,
The tapered outer surface 29 is pressed against the tapered receiver 14 and is self-aligned, so that the nut body 2 is aligned with the profile 2.
0 is accurately positioned in the longitudinal direction. Next, when the screw body 25 is tightened, the screw body 25 protruding inward comes into contact with the dovetail deep part 10a, and thereafter acts to move the nut body 20 outward, so that the pressing is done only on the surface. 20
g is brought into pressure contact with the inner surface 12a of the forming piece 12. Therefore, the clamping action of the bolt body 33 and the pressing action of the screw body 25 can fix the shape member 2 and the nut body 20. At this time, since the flange portion 21 is tightly inserted into the slit portion 11 of the profile 2, the profile 2 and the nut body 20 are fixed without relative displacement. Next, the exposed portion of the nut body 20 is inserted into the dovetail groove 10 at the end of the profile 1. This insertion movement pushes the flange portion 21 into the slit portion 11. Also, the insertion is done on the end faces 1a and 2a.
This is done until the spacers 30 come into contact with each other.
faces the tapered receiving surface 13. In this state, bolt body 3
When the tightening step 2 is performed, the tapered outer surface 28 is pressed against the tapered receiving surface 13 and self-aligned, thereby accurately positioning the nut body 20 in the longitudinal direction with respect to the profile 1. , pressure contact between both end surfaces 1a and 2a is performed. Next, when the screw body 24 is tightened, the screw body 24 protruding inward comes into contact with the dovetail deep part 10a, and thereafter acts to move the nut body 20 outward, and the pressing is performed on the surface 20a. is brought into pressure contact with the inner surface 12a of the forming piece 12. Therefore, the clamping action of the bolt body 32 and the pressing action of the screw body 24 can fix the shape member 1 and the nut body 20. At that time, since the flange portion 21 is tightly inserted into the slit portion 11 of the profile 1,
The shape material 1 and the nut body 20 are fixed without relative displacement.

As a result of the above, the pair of profile members 1.2 are linearly connected via the nut body 20 without relative displacement.

In the above embodiment, the nut body 20 and the shape material 1 are fixed after the shape material 2 and the nut body 20 are fixed.
This may be done by fixing the profile 1 side first, or by fixing both of them one after the other (almost simultaneously). Furthermore, in the above embodiment, a total of four nut bodies 20, two on each pair of surfaces, are used for connection;
The number of nut bodies 20 to be used is arbitrarily determined, such as using a total of two nut bodies 20.

By connecting the sections 1.2 as described above, a framework 35 can be constructed, for example, as shown in FIGS. 5 and 6.

Effects of the Invention According to the present invention having the above configuration, the flange portion of the nut body protrudes into the slit portion in a letter-like manner, so that the nut body and both shapes are free from rattling and relative positional deviation. Therefore, the relative positioning of the two molded members can be automatically performed and the two molded members can be accurately connected.

Furthermore, since the only long part is the nut body, it is easy to handle, and the connecting structure can be provided at low cost.Furthermore, since the connecting members, including the nut body, do not protrude from the outside surface of the profile, the appearance is improved. At the same time, collisions with other objects and getting caught can be eliminated.

Further, according to the configuration of the second invention, by tightening the bolt body, the taper receiving surface and the tapered outer surface are brought into pressure contact, so that the nut body can be accurately and automatically positioned in the longitudinal direction of the shape material due to the self-aligning action. In addition, by bringing the outer side surface of the nut body into pressure contact with the inner surface of the forming piece, it is possible to more firmly connect the two mold members.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an exploded perspective view;
Figure 2 is a front view of the connected state, Figure 3 is a partially cutaway side view of the same, Figure 4 is a cross-sectional plan view, Figure 5 is a front view of a frame body that is an example of use, and Figure 6 is the same. FIG. ■, 2... Shape material, 1a, 2a... End face, IO...
Dovetail groove, 10a... dovetail deep part, 11... slit part,
12... Forming piece, 12a... Inner surface, H, +4...
Taper receiving surface, 20... Nut body, 2 (la... Pressing surface (side outer surface), 21... Flange portion, 22.
23...Screw hole, 24.25...Screw body, 26.2
7... Screw hole, 28.29... Taber outer surface, 30.
31...Spacer, 32.33...Bolt body, 35
...Framework body, Wl...Flange portion width, W2...Slit portion width.

Claims (1)

[Scope of Claims] 1. A structure in which molded materials each having a dovetail groove that is open to the outside formed along the entire length thereof are connected in a straight line, wherein the dovetail groove is formed by a pair of formed pieces that are formed by a slit that is open to the outside. A nut body is provided between the ends of both molded pieces and can be inserted freely into both dovetail grooves, and this nut body is formed so that its outer side surface can freely come into contact with the inner surfaces of both forming pieces. , a flange portion that can be inserted into the slit portion in a dense manner protrudes outward from the outer surface of the intermediate portion, and a plurality of screw holes are provided in the intermediate portion of the nut body in the inner and outer directions, and these screw holes A connecting structure for shapes, characterized by having a threaded body that is screwed into the dovetail groove and can freely come into contact with the inner part of the dovetail groove. 2. The nut body has a flange portion removed at both ends in the length direction, and a threaded hole in the internal and external direction is provided in the removed portion, so that the nut body can be freely opposed to the removed portion from the outside and removed. A ring-shaped spacer having a convex tapered outer surface is provided, and a tapered receiving surface on which the tapered outer surface can freely come into contact is formed between the pair of formed pieces, so that the spacer can be freely screwed into the screw hole through the spacer. A connecting structure of shaped materials characterized by having a bolt body.