JPH0524805Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present application relates to furniture such as a table or a chair in which a top plate or a seat part is fixedly supported by a single support column to a leg member.

Conventional technology Conventionally, in a table, a top plate 1 is attached to a leg member.
01 is supported by a single support column 102, as shown in FIG.
3 is fixed by welding or the like, a fitting part 105 protruding from the center of the mounting plate 104 is provided at the upper end of the cylindrical support 102, and a fitting cylinder having a bottom plate 106 is provided at the lower end of the support 102. At the same time, the upper end key-shaped part of the connecting rod 108 inserted into the support column 102 is engaged with the mounting plate 104, and the lower end thereof is passed through the bottom plate 106, and the nut 109 is fitted therein. It was designed to be screwed together and tightened.

Problems to be solved by the invention By the way, according to the table described above, since the upper end of the connecting rod is locked and the lower end is tightened with a nut, sufficient adhesion strength to the support of the top plate can be obtained. Therefore, it is easy to cause looseness when a strong rotational force is applied to the top plate, and since it is tightened by a nut, the nut gradually loosens, which also causes looseness and lacks mechanical stability. has.

Means for Solving the Problems Therefore, in order to improve the disadvantages of the above-mentioned known devices, the present application provides an upper end tapered fitting portion and an upper end tapered fitting portion extending in the axial direction on the outer periphery thereof. The upper end tapered fitting portion is fixed to the lower surface of the top plate or seat via a support plate and has a tapered fitting hole formed in the inner periphery. The present invention provides a piece of furniture in which the upper fitting cylinder is tightly fitted, and a locking pin is passed through a through hole provided near the lower end of the upper fitting cylinder, and its tip is locked in the locking groove. In the above, a tapered fitting part may also be provided at the lower end of the column, and this may be tightly fitted into the tapered fitting hole of the leg member having the tapered fitting hole in the center. A locking groove that extends in the axial direction and opens at the lower end is formed in the tapered fitting portion of the lower end of the column, and the tip of a locking pin provided penetrating near the upper end of the lower fitting cylinder is locked in this locking groove. Stop. Further, the tapered fitting portion and the tapered fitting hole are each made of a Morse taper, and the locking pin is made of an elastic cylinder having a C-shaped cross section.

For example, when configuring a table, first insert the locking pin into the upper fitting cylinder and insert the tapered fitting part at the upper end of the support that is erected and fixed on the leg member into the upper fitting cylinder. The tip of the locking pin is slightly exposed to the taper fitting hole, and in this state, the tip of the locking pin is locked in the locking groove, and then the taper fitting portion and the taper fitting hole are deeply fitted by applying pressure. Then, with the engagement pin and the engagement groove in a locked state, the inner peripheral surface of the upper end tapered fitting hole and the outer peripheral surface of the upper end tapered fitting part come into close contact and are locked in the axial direction. The top plate or seat is fixed horizontally. In addition, there is a support that has a tapered fitting part at the upper and lower ends, a leg member that has a tapered fitting hole in the center that tightly fits with the tapered fitting part at the lower end of the support, and a support that is supported on the bottom surface of the top plate or seat. an upper fitting cylinder fixed through a plate and having a tapered fitting hole that tightly fits with the upper end tapered fitting part; When an extending locking groove is formed and a locking pin is passed through a through hole provided on the side surface of the upper fitting cylinder and its tip is locked in the locking groove, the taper fitting of the leg member The fitting operation between the mating hole and the lower end tapered fitting part of the column is performed in the same manner as above, and the inner circumferential surface of the tapered fitting hole and the outer circumferential surface of the lower end tapered fitting part come into close contact and are locked in the axial direction. The column is then fixed to the leg member.

Embodiments Below, the embodiments of the present application will be described in detail with reference to the drawings.
The figure shows an embodiment of the present application, and 1 shows a leg member in which the inner ends of four leg rods 3, 3, 3, 3 are integrally fixed to the outer peripheral surface of a short lower fitting cylinder 2 by welding. The lower fitting cylinder 2 has a flange 4 at its upper end, and its inner peripheral surface is formed by a tapered fitting hole 5 made of a Morse taper whose diameter decreases downwardly. Reference numeral 6 indicates a support column made of a metal pipe and having tapered fitting parts 7 and 8 made of Morse tapers at the upper and lower ends, respectively, and extending in the axial direction on the outer peripheral surface of the tapered fitting parts 7 and 8. In addition, locking grooves 9 and 10 are respectively formed parallel to the tapered surface and open at the end surfaces.
Reference numeral 11 denotes a support plate fixed to the lower surface of the top plate 12 with set screws 13, etc. A short upper fitting tube 14 is integrally fixed to the lower surface of the center of the support plate 11 by welding. An upper tapered fitting hole 15 made of a Morse taper is also formed on the inner peripheral surface of the mating tube 14. Reference numerals 16 and 17 indicate through holes that are provided through the outer surfaces near the lower end of the upper fitting tube 14 and the outer surface near the upper end of the lower fitting tube 2, respectively, and the tips of these holes are inserted into the locking grooves 9 and 10, respectively. A locking pin 18 preferably made of an elastic cylinder having a C-shaped cross section as shown in FIG. 3 is tightly fitted.

Therefore, when constructing a table, first, the lower end tapered fitting portion 8 of the support column 6 is slightly exposed into the tapered fitting hole 5 of the leg member 1 with the locking pin 18 passing through the through hole 17. In this state, the tip of the locking pin 18 is locked in the locking groove 10, and then the lower end tapered fitting portion 8 is press-fitted into the tapered fitting hole 5. Then, the tapered fitting portion 8 and the tapered fitting hole 15 are deeply fitted, and the outer peripheral surface of the tapered fitting portion 8 and the tapered fitting hole 1 are closely fitted.
5 is in close contact with the inner circumferential surface of the locking pin 18 to be locked in the axial direction, and along with this press-fitting, the tip of the locking pin 18 is automatically moved outward while being locked in the locking groove 10. . In this way, the tapered fitting hole 5 and the lower end tapered fitting part 8 are tightly fitted, and the support column 6 is firmly erected on the leg member 1. This mating operation is performed in the upper taper mating hole 1.
The same applies to the case where the upper end tapered fitting part 7 is tightly fitted to the support column 5, and the support plate 11 is firmly fixed to the upper part of the support column 6.

In the above embodiment, when a rotational force is applied to the top plate 12, the rotational force is applied most strongly to the fitting part between the upper fitting tube 14 and the upper end tapered part 8. A detent means consisting of a locking groove 9 and a locking pin 18 is provided. Furthermore, when the lower end of the support column 6 is directly erected at the center of the leg member 1 by welding or the like, fitting of the lower end tapered fitting portion 8 to the lower fitting cylinder 2 is naturally omitted. Further, although the above example is for a table, when configuring a chair, the support plate 11 is the top plate 1.
Instead of 2, it is fixed to the lower surface of the seat.

Effects of the Device As described above, according to the present application, the upper end of the column, where the external force in the rotational direction acts most strongly, and the support plate are fixed to each other by tight fitting between the tapered fitting portion and the tapered fitting hole. Therefore, it is possible to provide furniture with excellent stability that provides a strong adhesion state and does not wobble even during long-term use.Furthermore, the lower end of the pillar also has a tapered fitting part, so that it can be fitted with a tapered fitting. In a configuration in which the leg member having a mating hole in the center is tightly fitted into the tapered fitting hole, it is convenient to pack and transport the top plate or seat, the column and the leg member separately. In particular, in the present application, the upper locking pin is provided near the lower end of the upper fitting tube, and the lower locking pin is provided near the upper end of the lower fitting tube. Before tightly fitting the tapered fitting part and the lower tapered fitting part to the lower fitting cylinder,
The locking pin and the locking groove can be locked, which is highly workable, and the locking groove that extends in the axial direction and opens at the end face is formed in the tapered fitting portion at the upper and lower ends of the column. The structure in which the upper and lower fitting tubes are provided with engaging pins that engage with the stop grooves has advantages such as convenience in assembly work because the support columns do not have any directionality between the upper and lower ends.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is an overall perspective view with some parts omitted, FIG. 2 is an enlarged vertical sectional view of the main part, FIG. 3 is an enlarged perspective view of the locking pin, and FIG. 4 is an enlarged perspective view of the locking pin. FIG. 2 is an enlarged vertical cross-sectional view of main parts showing a conventional configuration. In the figure, 1 is a leg member, 2, 14 is a fitting cylinder, 5, 1
5 is a tapered fitting hole, 6 is a column, 7 and 8 are tapered fitting parts, 9 and 10 are locking grooves, 11 is a support plate, 12 is a top plate, 16 and 17 are through holes, and 18 is a locking pin It is.

Claims (1)

[Claims for Utility Model Registration] (1) An upper end tapered fitting portion and a locking groove that extends in the axial direction on the outer periphery and opens at the upper end are formed at the upper end of the pillar provided in the leg member, respectively; This upper end tapered fitting part is tightly fitted into an upper fitting cylinder which is fixed to the lower surface of a top plate or a seat via a support plate and has a tapered fitting hole formed in its inner periphery. A piece of furniture characterized in that a locking pin passes through a through hole provided near the lower end, and its tip is locked in the locking groove. (2) A column that has a tapered fitting portion at the upper and lower ends, a leg member that has a tapered fitting hole in the center that tightly fits with the tapered fitting portion at the lower end of the column, and the bottom surface of the top plate or seat. is fixed to via a support plate, and
a locking groove that is configured of an upper end tapered fitting portion and an upper fitting cylinder having a tapered fitting hole that tightly fits therein, and that extends in the axial direction on the outer periphery of the upper end tapered fitting portion of the pillar and opens at the upper end; The furniture is characterized in that a locking pin passes through a through hole provided near the lower end of the upper fitting cylinder, and its tip is locked in the locking groove. (3) A locking groove extending in the axial direction is formed on the outer circumferential surface of the tapered fitting portion at the lower end of the column, and a locking pin is passed through the through hole provided on the side surface of the lower fitting cylinder, and its tip is inserted into the 3. The furniture according to claim 2, wherein the furniture is locked in a locking groove. (4) The furniture according to claim 1, 2 or 3, wherein the taper fitting portion and the taper fitting hole each comprise a Morse taper. (5) The furniture according to claim 1, 2, 3 or 4, wherein the locking pin is made of an elastic cylinder having a C-shaped cross section.