JPS58123968A - Rod body for scaffold - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention relates to improvements in scaffolding rods that are mainly used as crossbars for reinforcing temporary frame structures such as columns that constitute scaffolding such as architectural scaffolding. .

Generally known as this type of rod, the rod has a telescopic structure in which the inner tube is fit into the outer tube so that the length can be adjusted. The length of the rod, which can be freely adjusted in this way, can be adjusted according to the dimensions of the scaffolding to be installed or erected, so it is extremely maneuverable and can be used to create a number of rods with different lengths. It is convenient in that there is no need to prepare different types, but since the outer tube and inner tube that make up the rod are engaged by 7 rixines, there is a risk of them shifting due to twisting momentum etc. However, there is a disadvantage that the structure of the scaffold itself becomes unstable. ' Therefore, this invention corrects the above-mentioned drawbacks and makes it possible to adjust the length, and once the length dimension is determined, it does not expand or contract any more, and becomes a single rod-shaped body, fulfilling the mission of reinforcing the scaffolding. The object of the present invention is to provide a scaffolding rod that can be used for scaffolding. To achieve such an object, the present invention includes an outer tube and an inner tube, each of which has a supporting member at each end that is attached to a part of the scaffold. is fitted to the outer tube so that it can freely slide in the axial direction, and a clamp is attached to the mouth of the outer tube into which the inner tube is fitted, and a clamp is attached directly or indirectly to the outer tube. The projection is configured to fit into one of a plurality of small holes formed in a line along the axial direction of the inner tube to restrict the axial movement of the inner tube. This is the summary.

According to this invention, the inner tube that slides in the axial direction inside the outer tube is held by the clamp. ′i′□, and a brake is applied to its sliding, and a protrusion (or pin) attached directly or indirectly to the outer tube is connected to one of the rows of small holes provided in the inner tube. The outer tube and the inner tube, which overlap each other so as to slide relative to each other, are engaged with each other and thereby restrict the sliding of the inner tube in the axial direction. When engaged with the rod, it becomes a straightened rod shape and connects, providing a reinforcing effect.

In this invention, the inner tube described above may be cylindrical or hollow rod-shaped.

In this invention, the clamp may be of integral construction or may be a split body that can be divided into two. In this case, one half is fixed to the outer tube, and the other half is hinged to the other half. Attach via. Although the clamp is simply tightened with a screw, in the embodiment described later, the clamp is tightened with a wedge mechanism. When the protrusion is provided on the clamp, it is provided on the cow body side of the clamp that is not fixed to the outer tube, and by rotating this half body around the hinge, the protrusion is removably fitted into the small hole of the inner tube. Furthermore, when attaching the protrusion to the half body side of the clamp fixed to the outer tube, the protrusion is attached via an elastic attachment member.

Next, the present invention will be explained in detail with reference to illustrated embodiments.

A rod constituting a pillar of a construction scaffolding or the like is composed of an outer tube 1 and an inner tube 2, and the inner tube 2 is fitted into the outer tube so as to be freely expandable and contractable. The inner tube 2 may be a cylindrical body or a hollow rod-shaped body. The outer tube 1 and the inner tube 2 are each equipped with a supporting member 3 at one end, and the rod is connected to a part of the scaffold via the supporting member 3. 3 is provided with a self-locking catch 4.

As shown in the figure, a plurality of small holes 5 are formed in the inner tube 2 at predetermined intervals in the axial direction.

A clamp 8 is attached via a mounting member 6 to the end of the outer tube 1 into which the inner tube 2 is inserted. The clamp 8 holds the inner tube 2, which is slidably inserted in the outer tube 1 in the axial direction, at the mouth end of the outer tube 1, and as shown in the figure, the lower half 7 and the upper half It consists of 9. The lower half 7 of this clamp 8 is fixed to the above-mentioned mounting member 6 by, for example, welding, and the upper half 9 is attached to the lower half 7 via a hinge 10. The lower half 7 and the upper half 9 have arc-shaped holding surfaces for clamping the inner tube 2, as shown in FIG. 2, and the lower half 9 can freely rotate around the hinge 10. It is attached to the lower half 7. The holding surface of the upper half 9 is provided with a protrusion 11 that fits into the small hole 5 of the inner tube 2.

When the upper half 9 of the clamp 8 is flipped upward, the clamp 8 becomes open, and the inner tube 2 slides relative to the outer tube 1 in the axial direction, expanding and contracting like a rod to change its length. Finish with adjustment. The degree of expansion and contraction is determined by the pitch of the small holes (circular or square) in the inner tube 2, and the length is adjusted in stages. Once the length is adjusted to the desired length, rotate the lower half 9 of the clamp 8 toward the lower half 7, and when the clamp 8 is closed, the protrusion 11 of the upper half 9 will open into the inner tube. 2, the sliding of the inner tube 2 in the axial direction is restricted, and the rod body does not expand or contract but maintains an extended state.

In order to keep the clamp 8 in a closed state, a means such as a locking mechanism 12 using a wedge or a screw stopper is employed.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view, FIG. 2 is a sectional view of the main part, and FIG. 3 is a plan view of the main part.
. [:' 1 Outer tube 2 Inner tube 3 Connecting support body 5 Small hole 6 Mounting member 7 Lower half of clamp 8 Clamp 9 Upper half of clamp 10 Hinge 11 Protrusion and 1 other person procedural amendment (method) 1988 λ May 14th, Mr. Commissioner of the Patent Office (Mr. Patent Office Examiner) 1. Indication of the case Patent Application No. 182675 of 1982 2. Name of the invention Scaffolding rod 3. Relationship with the person making the amendment Applicant 4. Agent address: 1-1-5 Minami-Aoyama-chome, Minato-ku, Tokyo Date of amendment order (voluntary) (Shipping date) Month, Day 6, 1939, application subject to amendment, power of attorney, corporate citizenship 1liE declaration, deed of assignment, Drawing Z Contents of amendment as attached

Claims (7)

[Claims] (1) An outer tube and an inner tube are provided, and each of the outer tube and the inner tube has a supporting body that is attached to a part of the scaffold at each end, and the inner tube is axially directed relative to the outer tube. It is fitted so that it can slide freely,
A clamp was attached to the mouth of the outer tube into which the inner tube was fitted, and protrusions provided directly or indirectly on the outer tube were arranged in a row along the axial direction of the inner tube. 1. A scaffolding rod configured to fit into one of a plurality of small holes to restrict movement of the inner tube in the annular direction. (2) Claim 1: The protrusion is provided on the clamp.
Scaffolding rod as described in section. (3) The clamp consists of a two-part body with one side fixed to the outer tube and the other side not fixed to the outer tube, and the protrusion is provided on the divided body not fixed to the outer tube.
Scaffolding rod as described in section. (4) The rod for scaffolding according to claim 1 or 2, wherein the rod as the rod for scaffolding is mainly used as a crossbar (bracing) for reinforcing the framework of the scaffold. (5) The scaffold rod according to any one of claims 1 to 4, wherein the protrusion has a cross-sectional shape that matches the small hole provided in the inner tube. (6) A scaffolding object according to any one of claims 1 to 5, which has the illustrated structure. (7) A scaffold rod according to any one of claims 1 to 5, which has the structure disclosed in the detailed description of the invention.