JPH0249155Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a rope hook attached to the loading platform of a truck or the like.

[Prior Art] This type of rope hook is formed by bending a round bar, and when attached to a loading platform, it is generally fixed by welding directly to the loading platform. If welding is not preferred, it is secured by bolting via a bracket that is integral with the rope hook.

By the way, spot welding is advantageous in terms of strength and cost as a method for integrally joining the hook body formed by bending a round bar and the bracket for attaching it to the loading platform. If the distance between the welding points is narrow, after welding one point, when welding the second point, the current will be shunted to the first welded point, which will reduce the current flowing through the weld.
The disadvantage is that welding strength decreases, and for this reason, conventional methods have been to either make the material wider than necessary and widen the distance between welding points, or to use other time-consuming welding methods such as arc welding.

[Problems to be solved by the invention] This invention was made in view of the above-mentioned problems. Even if the welding point spacing in spot welding is narrow, the flow will not be shunted, so the bracket can be made smaller, and the strength and strength will be improved. The purpose is to provide a rope hook that is excellent in terms of cost.

[Means to solve the problem] The measures taken to achieve the above purpose are as follows:
As shown in FIGS. 2 and 2, a bulge 21 having an arcuate cross section that can match the base 12 of the hook body 1 formed by bending a round bar is formed on the bracket 2, and the bulge 21 is bisected. A notch 22 is provided, and two spot welding points a and b for joining the hook body 1 and the bracket 2 are set on the bulge 21 with the notch 22 in between.

[Function] With the above configuration, even if the interval p between welding points a and b is narrow, when welding the second point b, the flow bypasses the notch 22 and is diverted to the already welded point a. Since the distance becomes longer, almost no flow is diverted to the already welded point a.

Therefore, it is possible to downsize the bracket 2 without reducing the welding strength.

[Example] Hereinafter, an example of this invention will be described in detail with reference to the drawings.

In FIGS. 1 and 2, a hook body 1 is formed by bending a metal round bar into an inverted U shape, and a large diameter portion 11 is provided at the tip to prevent the rope from coming off. A bracket 2 for attaching the hook body 1 to the loading platform is formed of a substantially rectangular metal plate.
A bulge 21 having an arcuate cross section that can match the base 12 of the hook body 1 is formed in the center thereof.
This bulging portion 21 is provided with a notch 22 that divides the bulging portion 21 into upper and lower halves. In the figure, 23 indicates a bolt insertion hole for fixing the bracket 2 to the loading platform.

The hook body 1 and the bracket 2 are
The base 12 of the bracket 2 and the bulging part 21 of the bracket 2 are overlaid and joined together by spot welding,
Two welding points a and b are provided in the bulging portion 21 of the bracket 2 with a notch 22 in between.

Fig. 2 shows the current flow in the welding part when welding the second point b, and the gap between the welding points a and b is reduced by providing a notch 22 in the bulging part 21 of the bracket 2. Even if p is narrow, when welding the second point b, use this notch 22 as shown by arrow c in Figure 1.
Since the current is diverted to the already welded point a, the distance becomes longer, and almost no flow is diverted to the already welded point a. Note that 3 in the figure indicates the electrode of the spot welding machine.

For comparison with this invention, FIG. 3 is a cross-sectional view corresponding to FIG. 2 showing the current flow in the welded part when the notch 22 is not provided in the bulge 21 of the bracket 2. , it can be seen that when welding the second point b', the current flows to the already welded point a', so the current flowing to the welding part decreases.

[Effects of the invention] As described above, according to this invention, even if the distance between the welding points in spot welding is narrow, the flow will not be diverted to the already welded point when welding the second point, and therefore the bracket can be made smaller. In addition, since spot welding is superior in terms of strength and production cost, a rope hook with a high bonding strength between the hook body and the bracket can be provided at an extremely low cost.

In addition, the notch that bisects the bulge with an arcuate cross section of the bracket is short in plan and has sufficient length, so that when welding the second point, it can be easily attached to the already welded point. It has the feature of effectively preventing flow diversion.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of this invention. Figure 1 is a perspective view of the rope hook of this invention, and Figure 2 shows the flow of current in the weld when spot welding the second point. For comparison with this invention, FIG. 3 is a cross-sectional view taken along the line A-A in FIG. FIG. 3 is a sectional view corresponding to the figure. DESCRIPTION OF SYMBOLS 1...Hook body, 12...Base, 2...Bracket, 21...Bulging part, 22...Notch, a.
b...Spot welding point.

Claims (1)

[Scope of utility model registration request] A rope hook in which a hook body formed by bending a round bar and a bracket for attaching the hook body to a loading platform are joined together by spot welding, and the bracket can be fitted with a base of the hook body. In addition to forming a bulge having an arcuate cross section, a notch was provided to divide the bulge into two, and two spot welding points were set on the bulge across this notch to connect the hook body and the bracket. A rope hook characterized by: