JPH0652597U - Leg device - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the leg device in which the supporting strength can be remarkably improved in the leg device in which the leg rods 1 can be arranged at a predetermined interval and can be folded and stored in a centralized state when stored. A leg device in which leg rods 1 are connected by an X-shaped rod member 3 having an intersection 2 pivotally attached to each other, and a hollow protrusion in which one side face is formed flat and the other side face has a central portion bulged A leg device in which the X-shaped bar rod member 3 is configured by pivotally connecting the intermediate portions of the deformed bar rod 5 having the ribs 5B with their one side flat surfaces 5A in contact with each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a leg device in which leg rods can be installed opposite to each other at a predetermined interval, and can be folded and stored in a centralized state when stored.

[0002]

[Prior art]

 For example, as shown in FIG. 1 and FIG. 2, an X-shaped rod member in which the leg rods 1 are arranged at a predetermined interval in a rectangular position when seen from a plane, and an intersection 2 is pivotally attached between the leg rods 1. 3, the end portions of the X-shaped bar rod members 3 are pivotally attached to the attachment portions 4 fitted on the leg rods 1, respectively, and the attachment portions 4 for pivotally attaching the upper end portions are attached to the leg rods 1. There is a leg device that is configured to be slidable along and has a mounting portion 4 to which the other lower end portion is pivotally attached.

Such a leg device changes the opening angle between the upper and lower end portions of the X-shaped bar rod member 3 while sliding the mounting portion 4 slidably provided along the leg rod 1. Adjusting the facing distance between the leg rods 1 and, when storing the leg rods 1, as shown in FIG. 3, open the opening angle between the upper and lower ends of the bar rod member 3 to bundle the leg rods 1 in a central state between the square positions. be able to.

Such a leg device is often used, for example, in a leg portion of a folding chair as shown in FIG. 1 or a leg portion of a folding table shown in FIG.

[0005]

[Problems to be solved by the device]

 As described above, it is necessary to support a considerable amount of weight used for a chair or a table, but the X-shaped rail member of the conventional leg device is simply constructed by intersecting flat flat bars. However, the bearing strength was extremely poor.

It is an object of the present invention to find out the above-mentioned drawbacks in such a leg device capable of being bundled and stored, and to provide an excellent leg device which is improved.

[0007]

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

A plurality of leg rods 1 are arranged at a predetermined interval, and an X-shaped bar rod member 3 having an intersection 2 pivotally mounted between the leg rods 1 is arranged, and the X-shaped bar rod member 3 is provided. End portions of the respective rods are pivotally attached to the attachment portions 4 provided on the leg rods 1, and at least the attachment portions 4 for pivotally attaching the upper or lower end portions are configured to be slidable along the leg rods 1. In a leg device capable of opening the opening angle between the upper and lower ends of the bar-shaped rod member 3 to bring the leg rods 1 toward the center side and folding and storing the leg rods 1 in a converged state, one side surface is made flat. Formed on the other side, a hollow protruding strip 5B having a bulged central portion is formed on the other side. The present invention relates to a leg device, characterized in that the beam member 3 is constructed.

[0009]

【Example】

 4 and 5 show the bar rod 5 that constitutes the X-shaped bar rod member 3 of the present embodiment.

In this embodiment, a flat plate having a thickness smaller than that of a conventional flat metal plate (flat bar) is left on one side, and both edges are slightly left, and the central part bulges like a kamaboko shape to form a hollow plate. The protruding portion 5B is formed on the bar rod 5 having a deformed shape formed in the lengthwise direction, and the flat surface portions 5A of the noodles on the opposite side of the bar rod 5 are superposed and pivoted at the intermediate portion to form an X shape. It constitutes the rod member 3.

It should be noted that even if the material used for the rod 5 is made thinner than before and is reduced by 20% in total, the bearing strength is about five times higher than that of the conventional flat plate, and the bearing strength is improved. Was confirmed.

The present invention is not limited to this embodiment, and may have a semi-cylindrical or semi-cylindrical cross section without flat plate edges on both edges.

[0013]

[Effect of device]

 Since the present invention is configured as described above, the projecting ridge portion 5B is provided in the bending direction of the X-shaped rail member (the direction intersecting the length direction of the rail plate surface). Therefore, even if the same material is used to form the same width and the material is saved, the bending strength and the bearing strength are improved.

[0014] Also, if a round pipe is simply used, pivotal attachment becomes difficult. However, in the present invention, an X-shaped pivot rod member is formed by pivotally attaching a bar rod having a projecting ridge on one side to a flat part on the opposite side. As a result, it is an excellent leg device that facilitates the pivotal attachment of the rod and improves the stability of the pivotal attachment part and the holding strength of the pivotal attachment.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a case where a leg device is used in a folding chair.

FIG. 2 is an explanatory diagram showing a case where a leg device is used for a folding table.

FIG. 3 is an explanatory view showing a state in which the leg device is folded and stored in a converged state with a leg rod being moved to the center.

FIG. 4 is a perspective view of a bar rod member of the present embodiment.

FIG. 5 is a cross-sectional view of the rail of the rail member of the present embodiment.

[Explanation of symbols]

 1 Leg Rod 2 Crossing Part 3 Bar Rod Member 4 Mounting Part 5 Bar Rod 5A One Side Plan View 5B Projecting Strip Part

Claims (1)

[Scope of utility model registration request] 1. A plurality of leg rods are arranged at predetermined intervals, and an X-shaped bar rod member having an intersection pivotally mounted between the leg rods is provided.
The end portions of the X-shaped rod members are pivotally attached to the attachment portions provided on the leg rods, respectively, and the attachment portions that pivotally attach at least the upper or lower end portions are configured to be slidable along the leg rods. , A leg device capable of opening the opening angle between the upper and lower ends of the X-shaped bar rod member to bring the leg rods toward the center side and folding and storing the leg rods in a converged state, one side surface of which is formed flat. The middle portions of the deformed bar rods having the hollow protruding ridges with the central portion bulging on the other side surface are pivotally attached to each other by abutting the flat portions on one side thereof to form the X-shaped bar rod member. A leg device characterized by being configured.