JPS5929127Y2 - Connection structure of parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for connecting members, and for example, to a structure for connecting a plurality of aluminum frames or the like to each other.

In the conventional structure for connecting members, for example, as shown in FIG. The parts 3 and 4 are fitted into the recesses 5 and 6, and the convex part 3
, 4, a bolt 9 is inserted through a through hole 7.8 provided in each member, and is tightened with a nut 10 to fix both members 1 and 2.

However, in such a structure, if the diameter of the through holes 7, 8 is larger than the diameter of the bolt 9, both the left and right members 1, 2 will wobble, and the bending force (indicated by A in the figure) will be applied to both the left and right members 1, 2. ) has the disadvantage that it is not possible to reliably connect and fix the members, such as rotation occurring when it is acted on.

The present invention is aimed at solving the above-mentioned drawbacks of the conventional member connection structure, and an embodiment of the present invention will be described below in detail based on FIGS. 2 and 3. Reference numeral 12 indicates a frame material to be connected to each other made of aluminum as both members, and a fitting protrusion 13 having a substantially T-shaped cross section is formed at the connecting end of one of the frame members 11, and this protrusion 13 A groove portion 15 having a substantially semicircular cross section is formed in the center of the distal end surface 14 .

Further, at the connecting end of the other frame member 12, there is a fitting groove 16 having a substantially T-shaped cross section, into which the protrusion 13 of the frame member 11 is lightly fitted.
Furthermore, in the center of the bottom surface 17 of this groove 16, there is a groove 1 having a substantially semicircular cross section corresponding to the groove 15 of the protrusion.
8 are formed, and both grooves is and ia are combined to form a substantially circular groove portion along the longitudinal direction of the fitting protrusion 13 and the fitting groove 16.

The connecting ends of the frame members 11 and 12 having the above-described shape are formed by extrusion molding using a suitable extruder.

In the figure, 19 is a steel taper pin, the main parts of which are both members 11.
．． It is formed to have a diameter larger than the diameter of the circular groove formed by the twelve groove portions 15 and 18.

Incidentally, a barker stud may be used for this taper pin 19.

Next, the method of connecting the frame members 11 and 12 will be explained.
As shown in the figure, the protrusion 13 at the end of one frame member 11 is fitted into the groove 16 at the end of the other frame member 12, and the groove 15 of the protrusion 13 and the groove 18 in the groove 16 form a groove. circular groove (third
As shown in the figure, the taper pin 19 is hammered in from above with a hammer or the like.

By tapping and inserting the taper pin 19, the frame members 11,1
A tensile force mainly acts on the frame members 11 and i2 in the direction in which both the frame members lL12 try to separate from each other, and as a result, the frame members 11 and i2
The protrusions 13 and the grooves 16 are tightly coupled to form both frame members 11°12.
are integrally connected.

In the above embodiment, the frame material made of aluminum was explained, but the present invention is applicable not only to metal materials other than aluminum, but also to synthetic resin members having high mechanical strength.

As explained above, the structure for connecting members according to the present invention is such that a fitting protrusion having a T-shaped cross section is formed at the connecting end of one of the members to be interconnected, and the tip surface of this protrusion is A groove with a semicircular cross section is formed in the connecting end of the other member, and a fitting groove with a substantially T-shaped cross section is formed in which the protrusion lightly fits into the connecting end of the other member. A groove with a semicircular cross section is formed at a position corresponding to the groove of the mating protrusion, and the protrusion of one member is fitted into the groove of the other member, and the substantially semicircular grooves of both members are formed. Since the taper pin is press-fitted into the substantially circular groove, the protrusion and the groove are tightly coupled, and both members can be reliably and firmly connected and fixed as one body.

In particular, even if the protrusion and the groove have different dimensions and there is a gap between them, the protrusion and the groove are forcibly connected tightly by the press-fitting of the taper pin, so there is no possibility of wobbling in both members. Furthermore, even if a bending force is applied to the member, rotation will not occur.

Further, according to the present invention, the two members can be connected by simply driving the taper pin after fitting the protrusion into the groove, so the method of posting is extremely simple and the cost of the product can be reduced.

In addition, a circular groove into which the taper pin is press-fitted is formed along the longitudinal direction (e.g., vertical direction) of the fitting protrusion and the fitting groove, and the taper pin is driven into this circular groove to connect the two members. This has the effect of preventing the connecting member from being exposed on a surface (for example, the front and rear surfaces) that is perpendicular to the connecting end surface and parallel to the longitudinal direction of the fitting protrusion and the fitting groove. Since the tapered pin is press-fitted into the circular groove provided at the center of the T-shaped fitting protrusion and the fitting groove, both ends of the horizontal side of the T-shaped fitting protrusion are evenly aligned with both horizontal ends of the fitting groove. This has the effect of ensuring a secure connection without wobbling.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a conventional member connection structure, Fig. 2 is an exploded perspective view showing a member connection structure according to an embodiment of the present invention, and Fig. 3 is a state in which the members in Fig. 2 are connected. FIG. 11 and 12 are members to be connected, 13 is a fitting protrusion 15, a semicircular groove, 16 is a fitting groove, 18 is a semicircular groove, and 19 is a taper pin.

Claims (1)

[Scope of utility model registration request] A fitting protrusion with a substantially T-shaped cross section is formed at the connecting end of one of the members to be interconnected, and a groove with a substantially semicircular cross section is formed at the center of the tip surface of this protrusion. A fitting groove having a substantially T-shaped cross section is formed at the connecting end so that the protrusion lightly fits therein, and a substantially half-shaped cross section is formed at the center of the bottom surface of the T-shaped groove at a position corresponding to the groove of the fitting protrusion. A circular groove is formed, the fitting protrusion of one member is fitted into the fitting groove of the other member, and the fitting is formed by the semicircular groove of the fitting protrusion and the semicircular groove of the fitting groove. A connecting structure of members in which a taper pin with a circular cross section is press-fitted into a circular groove along the longitudinal direction of a mating protrusion and a fitting groove.