JPS6239736Y2 - - Google Patents

Description

[Detailed description of the invention] The present application relates to a device for connecting furniture such as chairs and tables, and is particularly used to connect adjacent chairs, tables, etc. Below, embodiments of the present application will be described with reference to drawings. Reference numeral 1 designates a shaft-shaped connecting rod, and the connecting rod 1 has a threaded portion 2 at one end, a slit 3 with an inclined outer peripheral surface at the other end, and a slit 3 for engaging the tip of a fastener such as a screwdriver. , a flange 4 is provided at the inner end position of the threaded portion 2;
A locking groove 5 is provided on the outer periphery of the center position at a required distance.
are integrated into each other. 6 is inserted into the connecting rod 1 when connecting chairs etc., and is inserted into the connecting rod 4
A cylindrical spacing piece 7 that comes into contact with the end face of the cylindrical spacing piece 7 is a locking cylinder with a C-shaped cross section that is inserted into the connecting rod 1 in a tight fit state when connecting a chair or the like.The locking cylinder 7 is made of an elastic metal. a locking convex portion 8 which is created by and locks with the locking groove 5 of the connecting rod 1 at one end along the inner circumferential surface thereof;
However, a bent rib 9 bent outward is provided at the other end, and a protrusion 10 bulged outward is provided on the central outer circumferential surface, and at the front end position, a groove 11 and a diametrically aligned protrusion 10 are provided. A cutout groove 12 is formed opposite to.

A indicates a chair to be connected, and the chair A has a pair of left and right legs 13, 13' in a downward U-shape,
A seat part 14 installed between the upper sides of the legs 13 and 13', and an inverted U-shaped back frame 1 erected at the rear end.
5 and a back plate 16 attached to the back frame 15, and reinforcing beams 17, 17' are attached between the front and rear leg rods of the pair of legs 13, 13'.
Chairs A configured in this manner are connected by connecting the opposing reinforcing bars 17 and 17' via the connecting rod 1 when they are placed adjacent to each other. is provided with a screw hole 18 into which the threaded portion 2 of the connecting rod 1 is screwed, and the other reinforcing beam 17' is provided with a through hole 19 of a size in which the locking cylinder 5 is tightly fitted.

Therefore, when connecting chairs A, first screw the threaded part 2 of the connecting rod 1 into the screw hole 20 provided in the reinforcing bar 17 of one of the adjacent chairs A to the position of the collar part 4,
Next, the spacing piece 6 and the through hole 19 provided in the other reinforcing bar 17' of the other chair A are sequentially inserted into the connecting rod 1, and after the spacing between the reinforcing bars 17 and 17' is maintained by the spacing piece 6, the engagement The stop tube 7 is inserted into the connecting rod 1, and the bending rib 9 is pressed from the outside to be press-fitted into the through hole 19. Then, the protrusion 10 is crushed and tightens the connecting shaft 1, and the through hole 19
1 in a state where the locking convex part 8 of the locking tube 7 locks into the locking groove 5 of the connecting rod 1 and there is no play.
A pair of reinforcing bars 17, 17' can be connected. Although the above embodiment has been described for connecting chairs, it goes without saying that it can also be used to connect furniture such as tables, etc., which have horizontal bars or reinforcing bars on their legs.

As described above, according to the present application, it is possible to connect chairs etc. with a simple operation, the number of parts is small, and one end of the connecting shaft is threadedly connected to one connected member, and the other end is connected to the other connected member. This is achieved by inserting the locking tube together with the locking tube into the through hole of the connecting member and locking the locking groove and the locking convex portion, which has the advantage that the connected state is ensured.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is an exploded side view of the connecting shaft, spacing piece, and locking tube, FIG. 2 is an enlarged sectional view of the center of the locking tube, and FIG. FIG. 4 is a partially cut away partial view, and FIG. 4 is a perspective view showing a connected state of the chair. In the figure, 1 is the connecting rod, 2 is the threaded part, 5 is the locking groove, and 7
8 is a locking tube, 8 is a locking convex portion, 9 is a bending rib, and 19 is a through hole.

Claims (1)

[Claims for Utility Model Registration] (1) A connecting rod formed with a threaded portion at one end, a flange portion near the inner end, and an engagement groove at a central position remote from the flange portion; A locking cylinder having a C-shaped cross section, which is inserted into the connecting rod and has a locking protrusion that locks with the locking groove on the inner circumferential surface of one end and an outward bending rib on the other end, is used. ,
Screw the threaded part of the connecting rod into one member to be connected up to the flange position, and insert the other part of the connecting rod and the locking tube into the through hole provided in the other member to be connected. A connecting device for a chair or the like, which is inserted through the locking tube and locks the locking protrusion of the locking tube in the locking groove of the connecting rod. (2) A connecting device for a chair, etc., as set forth in claim 1 of the Utility Model Register, in which the locking tube is made of an elastic metal.