JP3205717U - Joint structure such as table - Google Patents

Abstract

In a joint leg structure such as a table whose height is adjusted by a joint leg, a height-adjusting leg seat that has an insertion connection structure and is screwed on is used regardless of the presence or absence of the joint leg. A connecting leg structure such as a table is provided. In a pipe leg joint structure that includes a leg seat 4 that is screwed and attached to the lower end of the leg, and that is inserted and connected, a spring wire is projected in the leg axis direction into a small-diameter insertion insertion portion 32. A resistance protrusion 33 for preventing the removal is provided, and an end surface of the leg that receives the insertion insertion portion 32 is provided with an inner surface thread for screwing and mounting the leg seat 4, and resists the inner surface thread. The leg seat mounting part 21 which formed the protrusion groove | channel of the protrusion is provided. [Selection] Figure 1

Description

  The present invention relates to a joint leg structure for adjusting the height of a table.

  When adjusting the height of a table or the like, it is adjusted by adding a joint leg to a main leg mounted on the table or the like. When pipe legs are used for the joint legs that are frequently used, an insertion connection structure is adopted, and the leg seats that come into contact with the floor surface etc. also adopt an insertion mounting structure to the lower ends of the main legs and joint legs Has been. As a structure for finely adjusting the height by the leg seat, a structure in which the leg seat is screwed to the leg end is known, and when the screwed structure is to be fitted to the leg end of the main leg, A screwing structure is also adopted for the main leg attachment / detachment structure (Patent Documents 1 and 2).

Japanese Utility Model Publication No. 48-37102. JP-A-11-244056.

  Although the screw connection structure shown in Patent Documents 1 and 2 can be finely adjusted in height, the connecting and detaching operation of the joint leg is troublesome. On the other hand, when the insertion connection structure is adopted, the connection operation is easy, but the height cannot be finely adjusted. In addition, it is possible to adopt a screw mounting structure of the leg seat at each leg end of the main and joint legs of the plug-in connection structure, but if a plug-in connection structure is adopted, it must have some kind of retaining structure. In many cases, this retaining structure is provided with a spring member protruding from the outer peripheral surface on the insertion side. For this reason, even if a thread surface for screwing the leg seat is formed on the inner peripheral surface of each leg end of the main leg and joint leg, this thread peripheral surface may be damaged when the joint leg is removed. become.

  In view of this, the present invention proposes a joint leg structure such as a new table that employs an insertion structure for the main leg and the joint leg, and realizes screwing of the leg seat.

  The joint leg structure of a table or the like according to claim 1 of the present invention is a pipe leg joint structure that includes a leg seat that is threadedly attached to the lower end of the leg, and is inserted and connected to add a small diameter. A resistance protrusion for preventing the spring wire from protruding in the leg axis direction is provided on the portion, and an end surface of the leg that receives the insertion insertion portion is provided with an inner peripheral surface thread for screwing and mounting the leg seat, The inner peripheral surface thread is provided with a leg seat mounting portion in which a passage groove for a resistance protrusion is formed.

  Thus, when inserting and inserting the small diameter insertion insertion part at the upper end of the joint leg into the main leg (leg on the insertion receiving side), the leg is inserted by inserting the resistance protrusion along the passage groove. The insertion connection is made without damaging the inner peripheral surface thread of the seat mounting portion. When the joint leg is not connected, the leg seat can be screwed.

  Further, in the joint leg structure of the table or the like according to claim 2 of the present invention, the leg seat mounting part is formed of a cylindrical resin material, and the leg end part is provided with the upper end portion fitted outside, and the passage groove is provided at the back. It is formed on an inclined surface where the groove depth becomes shallower, softens the contact with the resistance protrusion during insertion operation of the insertion insertion part, reduces the resistance of the resistance protrusion, and reduces the resistance protrusion Reduce wear.

  Further, the joint leg structure of the table or the like according to claim 3 of the present invention is a leg provided at the leg seat mounting portion and the leg end portion (main leg or joint leg) for receiving the insertion insertion portion at the lower end of the leg (joint leg). The seat mounting portion is formed of the same member, and the use of the common member has a manufacturing advantage.

  The configuration of the present invention is as described above, and the height of a table or the like can be adjusted with a simple operation by adopting an insertion structure for the detachable connection of the main leg and the joint leg and the multistage detachable connection of the joint leg. In addition, it is possible to finely adjust the height by adjusting the screwing of the leg seat without any trouble in any height adjustment state.

It is explanatory drawing of embodiment of this invention, (a) shows the case where a joint leg is used (b) only a main leg. The expanded sectional view of the leg seat mounting part of the main leg. The lower perspective view of the joint leg and a leg seat.

  Next, an embodiment of the present invention will be described. The joint leg structure shown in the embodiment shows a combination example of the main leg 2 attached to the lower surface of the table plate 1 and the joint leg 3, and each leg end of the main leg 2 and the joint leg 3 which are pipe legs. The seat is provided with leg seat mounting portions 21 and 31 to which the leg seat 4 is screwed.

  The joint leg 3 is provided with a resistance projection 33 for preventing the spring wire from projecting in the leg axis direction at the insertion insertion portion 32 having a small diameter at the tip. The resistance protrusion 33 is provided with a U-shaped spring wire in the pipe leg so that the spring force is exerted, and a part of the bent wire 34 protrudes from the vertically long hole 34 provided in the insertion insertion portion 32. It is formed by.

  The leg seat 4 is composed of an upper screw shaft portion 41 and a lower seat portion 42, and the upper screw shaft portion 41 has an outer diameter corresponding to the substantially inner diameter of the pipe leg.

  The leg seat mounting portions 21 and 31 are formed of a cylindrical resin material, and are provided by fitting the upper end portions to the leg end portions of the main leg 2 and the joint leg 3. The inner peripheral surface is provided with inner peripheral surface threads 211 and 311 that are screwed with the upper screw shaft portion 41 of the leg seat 4, and the inner peripheral surface threads 211 and 311 are provided with a resistance projection 33. The passage grooves 212 and 312 are formed. The passage grooves 212 and 312 are formed on an inclined surface in which the depth of the inner groove is particularly shallow.

  Thus, the height of the table plate 1 is used as a high table by inserting and connecting the joint leg 3 to the main leg 2 (FIG. 1A) or as a low table only by the main leg 2. is there.

  When used as a high table, the insertion insertion part 32 having a small diameter at the upper end of the joint leg 3 is inserted into the main leg 2 so as to exert a retaining function by the pressing force of the resistance projection 33. However, in particular, by inserting the resistance protrusion 33 along the passage groove 212 at the time of the insertion, the leg seat of the joint leg 3 can be obtained without damaging the inner peripheral surface thread 211 of the leg seat mounting portion 21. The table 4 is finely adjusted by screwing the leg seat 4 to the mounting portion 31.

  When the table is used as a low table, the leg seat 4 is screwed to the leg seat mounting portion 21 of the main leg 2 to finely adjust the table height.

  In addition, although the said embodiment illustrated the combination of the main leg 2 and the joint leg 3, you may use the some joint leg 3 in multiple steps.

DESCRIPTION OF SYMBOLS 1 Table board 2 Main leg 21 Leg seat mounting part 211 Inner peripheral surface thread 212 Passing groove 3 Joint leg 31 Leg seat mounting part 311 Inner peripheral surface thread 312 Passing groove 32 Insertion insertion part 33 Resistance protrusion 34 Longitudinal hole 4 Leg seat 41 Upper screw shaft portion 42 Lower seat portion

Claims (3)

  In the joint leg structure of the pipe leg that has a leg seat that is screwed into the lower end of the leg, and is connected by connecting, it is a resistance to prevent the spring wire from protruding in the direction of the leg axis at the insertion part with a small diameter A leg provided with a protrusion and an inner peripheral surface thread for screwing and mounting the leg seat on a leg end that receives the insertion insertion part, and a passage groove for a resistance protrusion is formed on the inner peripheral surface thread. A connecting leg structure for a table or the like characterized by providing a seat mounting portion.   2. The leg seat mounting portion is formed of a cylindrical resin material, and an upper end portion is externally fitted to the leg end portion, and a passage groove is formed on an inclined surface where the depth of the rear groove becomes shallow. Joint structure such as table.   3. A joint structure for a table or the like according to claim 2, wherein a leg seat mounting portion provided at a leg end portion for receiving a leg seat mounting portion at a lower end of the leg and an insertion insertion portion is formed of the same member.

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