JPH0221610Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a coupling fitting.

More specifically, the present invention relates to a joining fitting used when joining an end of a cylindrical or other shaped member to a cylindrical body.

For example, a mirror stay that is formed by bending a cylindrical member into a substantially U-shape and is provided on the side surface of a large vehicle such as a truck so as to protrude outward from the vehicle body has a large overhang amount and Since a large number of mirrors are attached and heavy, the mirror stays also vibrate as the vehicle body vibrates during driving, and the mirrors also vibrate, impairing visibility and hindering safe driving. Therefore, a reinforcement member is interposed between the mirror stays or between the mirror stay and the vehicle body to prevent vibration of the mirror stay. In most cases, the mirror stay and the reinforcing member are attached via coupling fittings for ease of installation, but in the case of coupling fittings, it is difficult to attach due to vibrations of the vehicle body while driving. It is necessary to firmly attach the coupling fittings so that they do not loosen and move, and in the past, coupling fittings as shown in FIG. 3 have generally been used. This conventional coupling fitting 24 has a semicircular inner peripheral surface with a diameter slightly smaller than the diameter of the mirror stay 2 at one end thereof in order to hold the mirror stay 2 formed of a cylindrical material in the width direction. holding part 27,
28, and a mounting portion 2 provided at the other end to sandwich the flat end portion 3a formed at the end of the reinforcing member 3.
9, 30, and two coupling fitting component members 25, 26 formed substantially symmetrically on the left and right. In the case of 25 side), there is a large trapezoidal convex portion 31a with a wide tip side extending integrally at the center of the tip of the holding portion 27 so as to be located on the extended circumference of the holding portion 27, and the other coupling metal fitting. A large trapezoidal convex portion 31 is provided at the tip of the holding portion 28 of the member 26.
A large trapezoidal recess 31 formed so that a fits therein.
It is configured to be joined by fitting together the joining part 31 consisting of b, and the two joining fitting component members 25 and 26 are joined, the mirror stay 2 is held by the holding parts 27 and 28, and then tightened. bolt 14
The reinforcing member 3 is attached to the mirror stay 2 by sandwiching and fixing the flat end portion 3a of the reinforcing member 3 between the attaching portions 29 and 30.
Therefore, since the two coupling fitting component members 25 and 26 are connected only by the contact surface of the joint portion 31, it is necessary to increase the thickness of the material in order to increase the joint strength. However, when the thickness of the plate is increased, the weight of the coupling fitting 24 increases, and there is a drawback that it cannot be used when it is necessary to reduce the weight.

The present invention was developed in view of the above-mentioned circumstances, and consists of a semicircular holding part formed to hold the cylindrical body in the width direction, and an end of the member to be attached to the other end. The mounting part for fixing the parts is made up of two joining metal component members formed approximately symmetrically, and in order to join the two joining metal component members, the holding part is held by one of the joining metal component members. A joint portion consisting of a large convex portion extending integrally at the tip of the joint member, and a large concave portion formed such that the large convex portion fits into the tip of the holding portion of the other coupling fitting component member. In the coupling fitting, reinforcing pieces are provided erected in an outward direction along at least the edge of the joint, and these reinforcing pieces each extend from the edges of the large convex portion and the large concave portion to be fitted. By facing each other in the same shape at a predetermined height almost vertically and joining them face-to-face by fitting, the contact surface at the joint is expanded, thereby increasing the joint strength without increasing the weight. The purpose is to propose a coupling fitting that can achieve the following.

Hereinafter, the present invention will be explained based on an embodiment shown in the drawings, which is used for attaching a mirror stay and a reinforcing member to a truck.

In FIGS. 1 and 2, 1 is a truck cab, and 2 is a mirror stay provided on the side surface of the truck cab 1 in such a manner that it projects outwardly. It is formed by 3 is a reinforcing member interposed between the upper and lower edges of the mirror stay 2;
Flat end portions 3 formed at both ends of this reinforcing member 3
a and the mirror stay 2 are fixed to each other via a coupling fitting 4. The coupling fittings 4, 4 are each constructed as follows. That is, reference numerals 5 and 6 are respective coupling metal fitting constituent members, and one end of each of these coupling fitting constituent members 5 and 6 is provided for holding the mirror stay 2 in the width direction of the coupling fitting constituent members 5 and 6. Holding parts 7 and 8 having semicircular inner circumferential surfaces with a slightly smaller diameter than the mirror stay 2 are formed approximately symmetrically, and one holding part (holding part 7 in the embodiment)
A large trapezoidal convex portion 11a with a wide tip end side is formed at the center of the tip of the holding portion 7, and extends integrally to be located on the extended circumference of the holding portion 7. At the center of the tip of 8, there is a large trapezoidal convex portion 11.
A large trapezoidal concave portion (not shown) into which the portion a fits is formed, and the large trapezoidal convex portion 11a and the large trapezoidal concave portion form the joint portion 1 of both coupling fitting component members 5 and 6.
1 is configured. Reference numerals 9 and 10 designate mounting portions for holding the flat end portions 3a of the reinforcing member 3 formed at the other ends of the coupling fitting component members 5 and 6; 5 and 6 are joined and the mirror stay 2 is held by both holding parts 7 and 8, they are provided in a positional relationship in which they face each other with an interval slightly wider than the thickness of the flat end part 3a.

Reference numerals 12 and 13 denote both side edge portions of both coupling fitting component members 5 and 6, tips of holding portions 7 and 8, and joint portion 11.
This is a reinforcing piece that is erected substantially perpendicularly in the outward direction along the edge. That is, as shown in the figure, both reinforcing pieces 12 and 13 have a large trapezoidal convex portion 11a that fits together.
and are integrally formed substantially perpendicularly from the edges of the large trapezoidal concave portion along the shape thereof, and are placed facing each other in the same shape at a predetermined height, and are surface-connected by fitting.

Note that 14 is inserted into bolt insertion holes (not shown) drilled in both the mounting parts 9, 10 and the flat end 3a, and is attached to the flat end 3a by a nut (not shown).
This is a tightening bolt for clamping and fixing between the two mounting parts 9 and 10.

Since the coupling fitting 4 according to the present invention has the above-described configuration, the joining of both coupling fitting component members 5 and 6 is achieved not only by the thickness of the two material plates but also by the reinforcement pieces having the same shape and facing each other substantially perpendicularly. This can also be achieved by surface joining by fitting 12 and 13 together. This allows the mating surface to be expanded and a strong bond to be achieved without increasing the thickness of the material. In addition, in the above-described embodiment, reinforcing pieces 12 and 13 provided at the joint portion 11 are also integrally provided at both side edge portions of both coupling fitting component members 5 and 6 and at the tip of the holding portion. , 13 are erected, the reinforcing pieces 12, 13 of the joint portion 11 are not deformed and have sufficient strength.

Although the structure and operation of the coupling fitting of the present invention have been described above, the present invention is not limited thereto, and the design can be changed as desired without changing the gist thereof.

As is clear from the above description, the present invention has the configuration as described in the claims, so it is possible to enlarge the abutting surface of the joint without increasing the thickness of the material plate of the joining fitting component. As a result, the joint strength can be increased without increasing the weight of the joining fittings, and other excellent effects can be achieved.

[Brief explanation of drawings]

Figures 1 and 2 show one embodiment of the present invention. Figure 1 is a perspective explanatory view showing an example of mounting a mirror stay and reinforcing member on a truck, and Figure 2 is an illustration of the embodiment of the present invention. FIG. 3 is an enlarged perspective view of part A, and FIG. 3 is a perspective view of a main part showing how a mirror stay and a reinforcing member are attached using a conventional coupling fitting. In the figure, 1 is the truck cab, 2 is the mirror stay,
3 is a reinforcing member, 3a is a flat end portion, 4 is a coupling fitting,
5 and 6 are coupling fitting constituent members, 7 and 8 are holding parts,
9 and 10 are attachment parts, 11 is a joint part, 11a is an enormous convex part, 12 and 13 are reinforcing pieces, and 14 is a tightening bolt.

Claims (1)

[Claims for Utility Model Registration] A semicircular holding part formed to hold the cylindrical body in the width direction at one end, and a holding part for fixing the end of the attached member at the other end. It consists of two coupling fitting component members formed approximately symmetrically, and in order to join the two coupling fitting component members, a mounting portion is integrally attached to the tip of the holding portion of one of the coupling fitting component members. A joining metal fitting comprising a joint part consisting of a huge convex part extending from the outside and a huge concave part formed so that the huge convex part fits into the tip of the holding part of the other metal fitting component. In this case, reinforcing pieces are erected outwardly along at least the edge of the joint, and each of the reinforcing pieces extends approximately perpendicularly to a predetermined height from the edge of the large convex portion and the large concave portion to which they fit. A coupling fitting characterized in that the fittings are arranged facing each other in the same shape and are surface-joined by fitting.