JPH0440526Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a chair connection device that allows a number of identical chairs to be connected laterally.

[Conventional technology]

In the past, most chairs that connected a large number of chairs laterally were simply connected using screw rods, as seen in Japanese Utility Model Application Publication No. 58-90149.

[Problem that the invention aims to solve] However, with such a structure, the connecting operation is troublesome as it involves screwing in the connecting rods and fitting the bending ribs, and it takes time and effort to connect a large number of chairs. In addition, it requires tools, which is inconvenient, and the parts are likely to wear out when repeatedly attached and detached, and the structure is complicated.

[Means for solving problems]

The present invention solves such problems and enables reliable, quick and easy connection.
Therefore, a horizontal insertion hole is formed in each of the seat frames, which are the lower parts of both sides of the seat body, and a circle with a convex part on a part of the inner periphery that matches the insertion hole is formed on the inner surface of the seat frame. A supporting plate having a shaped hole is fixed thereto, and a circumferential groove having a depth approximately equal to the height of the convex portion is formed inside the tips of both ends of a round bar-shaped connecting rod having a handle at an intermediate position. , on a part of the outer periphery of the tip,
It is constructed by forming a cut surface extending in a plane from a part of the bottom surface of the circumferential groove to the tip side.

[Effect]

Therefore, fit the tips of both ends of the connecting rod into the seat frames of the chairs that are parallel and adjacent to each other, and ensure that both tips of the connecting rod are inward from the convex part of the circular hole. When the connecting rod is rotated by the handle in the state where it is extended, the side surface of the circumferential groove, which is the inner end surface of the tip, can be engaged with the outside of the convex part, so that it will not come off due to vibration etc. This means that both chairs can be connected, and the connection can be easily released by performing the reverse operation.

〔Example〕

Next, the embodiment shown in the drawings will be described. FIG. 10 shows a perspective view of each chair connected laterally,
Each chair A was made of wood and had a seat body 1, a back body 11, and four supporting legs 12, and was constructed by constructing a wide seat frame 2 extending in the front and back direction at the bottom of both sides of the seat body 1. It is something.

A round insertion hole 3 is formed laterally in the middle part of the seat frame 2 of each chair A in the longitudinal direction, and both supports made of steel plates are fixed to the inner surface of the seat frame 2 with screws 13, 13. At the center of the plate 6, circular holes 5 are formed that match the insertion holes 3 and have the same size, and on the inner peripheral sides of both circular holes 5, convex portions 4 that protrude short inward are formed. Form and configure each.

Reference numeral 8 denotes a connecting rod made of a round bar, and a round bar-shaped handle 7 is provided radially protruding from the middle part of the connecting rod 8, and the above-mentioned convex portions are provided inside the tip portions 8a on both ends of the connecting rod 8. A circumferential groove 9 having a depth of about the height of 4 is formed respectively,
A cut surface 10 is formed on a portion of the outer periphery of both tip ends 8a, respectively, and extends from a portion of the bottom surface of the circumferential groove 9 toward the tip side as a flat and tapered surface. Therefore, both ends 8a of the connecting rod 8 are inserted into the insertion holes 3, 3 of the seat frames 2, 2 of the chairs A brought close together for connection, but as shown in FIGS. 5 and 6. As shown, while the cut surfaces 10 of both end portions 8a face the convex portion 4, the end portions 8a are inserted until they pass through the circular hole 5, and from this state, the handle 7 is inserted.
When the connecting rod 8 is rotated approximately 90 degrees by lowering the connecting rod 8 downward, the convex portion 4 is aligned with the circumferential groove that forms the inner end surface of the tip portion 8a, as shown in FIGS. 1, 7, and 8. 9, so that the connection can be made as shown in FIG. 9 so that it will not come off due to vibrations or the like.

In addition, when removing the chair A, the connecting rod 8 can be removed and both chairs A can be separated by performing the reverse operation of the above-mentioned operation.

[Effect of idea]

In this way, the present invention connects the ends 8a of the connecting rods 8 to the insertion holes 3 of the seat frames 2 of adjacent chairs in parallel.
When inserted through the circular hole 5 so as to protrude inward and rotated by the handle 7, the protrusion 4 engages with the side surface of the circumferential groove 9, connecting both chairs into one. The rod 8 allows for reliable and good connection so that it does not come off, and the connection can be quickly and easily connected and released with a simple operation without the need for tools, and has the advantage of being of a simple structure and suitable for implementation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of an embodiment of the present invention;
Figure 2 is a perspective view of the connecting rod, Figure 3 is a perspective view of the support plate, Figure 4 is an exploded view of the main parts, Figure 5 is a cross-sectional plan view of the installed state, and Figure 6 is Figure 5. 7 and 8 are explanatory diagrams of the operation of FIGS. 6 and 5, respectively, FIG. 9 is a bottom view of the connecting parts, and FIG. 10 is a diagram of the connected chairs. A perspective view is shown. 1... Seat body, 2... Seat frame, 3... Insertion hole, 4...
... Convex portion, 5 ... Circular hole, 6 ... Support plate, 7 ... Handle, 8 ... Connecting rod, 8a ... Tip part, 9 ... Circumferential groove, 10 ... Cut surface.

Claims (1)

[Scope of Claim for Utility Model Registration] Horizontal insertion holes 3 are provided in the left and right seat frames 2, which are the lower parts of both sides of the chair seat body 1, and the seat frames 2
A support plate 6 having a circular hole 5 whose size matches the insertion hole 3 and has a convex portion 4 on a part of the inner periphery is fixed on the left and right inner side surfaces of the support plate 6 . On the other hand, inside the tip portions 8a at both left and right ends of the round bar-shaped connecting rod 8, which has a handle 7 in the middle portion, a circumferential groove is formed with a depth approximately equal to the height of the convex portion 4 formed in the circular hole 5. 9, and a cut surface 10 which is flat from a part of the bottom surface of the circumferential groove 9 to the tip side is provided on a part of the outer periphery of the tip 8a of the round bar-shaped connecting rod 8, The round bar-shaped connecting rods formed in this manner are interposed between parallel and adjacent chairs, and the left and right ends of the connecting rods are respectively fitted into the insertion holes 2 provided in the chair seat frame 2. A connecting device for chairs.