JPS5828089Y2 - battledore brace - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of a battledore place for turnbuckles used for bracing of buildings, and the object is to provide a battledore place that has excellent strength and durability and can be manufactured at a low cost. The purpose is to

Conventionally, this type of Hago material press welds the other end of a bar with a male thread to a flat plate and welds and fixes the two together, but since the rod is cylindrical, the contact area with the flat plate is very small. Therefore, when the turnbuckle body is tensed, an excessive load is applied to the welded part, which tends to cause damage or cracks in the welded part.

Furthermore, when welding a cylindrical rod to a flat plate, it is difficult to weld while holding the rod in the center of the flat plate, which requires time and effort to manufacture, resulting in high costs overall, and lacks strength for practical use. There were many shortcomings.

This invention eliminates all the drawbacks such as slanting, and an example of its implementation will be explained below with reference to the drawings.

Reference numeral 1 denotes a shaft rod with a male thread 2 carved into one end, and the other end of this shaft rod 1 is crushed in the longitudinal direction by means such as forging to form a flat portion 3, and the lower surface of the flat portion 3 is aligned with the axis of the rod 1. A protrusion 4 is integrally attached to the.

Reference numeral 5 denotes an oval-shaped flat plate having a keyhole-shaped engagement hole 6 for engaging with a retaining protrusion such as a bolt or rivet, located on the center line of the flat plate 5 and on the opposite side from the retaining hole 6. A through hole 7 having an inner diameter approximately the same as the outer diameter of the protrusion 4 is bored on one side, and the protrusion 4 protruding from the lower surface of the flat part 3 of the shaft rod 1 is inserted into the through hole 7. The flat part 3 of the shaft rod 1 is fitted onto the flat plate 5, and the two are fixed together by spot welding or the like to form a battledore place.

In addition, in the embodiment, only one protrusion 4 is provided protruding from the lower surface of the flat part 3 of the shaft rod 1, and one through hole 7 is provided in the flat plate 5. If at least two protrusions 4 are provided on the same axis with an interval between them, and two through holes 7 corresponding to the protrusions are provided on the center line of the flat plate 5, the position of the flat plate 5 and the shaft rod 1 will not be misaligned during welding. This will further improve the strength.

As described above, in the battledore place of this invention, one end of the shaft rod is crushed to form a flat part, a protrusion is provided on the lower surface of the flat part, and a through hole into which the protrusion can be inserted is formed in the flat part. The protrusion was provided on the abutting flat plate, and the flat part of the shaft rod and the flat plate were welded and fixed by fitting the protrusion into the through hole, so the contact area between the flat plate and the shaft rod was large, and the protrusion provided on the flat part made it possible to connect the shaft rod and the flat plate. Since the two are engaged, the strength is greatly improved compared to the conventional place, and since welding can be performed with the flat part of the shaft rod in contact with the flat plate, there is less variation in the product due to poor welding skill. Since the efficiency of welding work can be improved and the production volume can also be increased, the product can be provided at low cost.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the battledore place of this invention, and FIG. 2 is a partially cutaway front view. 1...Shaft rod, 2...Male thread, 3...
... Flat part, 4 ... Protrusion, 5 ... Flat plate, 6 ... Engagement hole, 7 ... Through hole.

Claims (1)

[Scope of utility model registration request] The other end of a shaft rod with a male thread carved into one end is crushed to form a flat part, and a protrusion protruding on the axis of the lower surface of this flat part is placed on the center line of one side of the flat plate with a retaining hole cut through. A battledore place, characterized in that the flat plate of the shaft rod is fitted into a through hole provided in the plate, and the flat part of the shaft rod is brought into contact with the flat plate, and the flat plate and the flat part of the shaft rod are welded and fixed.