RU2001320C1

RU2001320C1 - Screw

Info

Publication number: RU2001320C1
Authority: RU
Inventors: н Михаил Миронович Зурикь
Original assignee: н Михаил Миронович Зурикь
Priority date: 1990-06-07
Filing date: 1990-06-07
Publication date: 1993-10-15

Abstract

Сущность изобретени : винт содержит полукруглую головку с двум парами оплозитно расположенных полушлицев. Ширина перемычек между полушлицами больше ширины последних Угол между боковыми стенками каждого полушлица меньше 90&deg;. 4 ил.SUMMARY OF THE INVENTION: The screw comprises a semicircular head with two pairs of well-positioned half-slots. The width of the jumpers between the half-slots is greater than the width of the latter. The angle between the side walls of each half-slot is less than 90 °. 4 ill.

Description

Изобретение относитс к винтам, властности полукруглой головкой и крестообразными шлицами.FIELD OF THE INVENTION This invention relates to screws, a semicircular head, and crosswise slots.

Известны винты с полукруглой головкой и крестообразными шлицами.Known screws with a semicircular head and crosswise slots.

Наиболее близким из известных вл етс винт с полукруглой головкой, на которой выполнены две пары оппоэитно расположенных полушлицев.The closest known screw is a pan head screw on which two pairs of oppositely spaced half-slots are made.

Недостатком прототипа вл етс пони- женна Ч ро«1Йость и нагрузочна способность готовки винта.The disadvantage of the prototype is the reduced frequency and load capacity of the screw preparation.

Цель изобретени - повышение прочности и нагрузочной способности головки винта .The purpose of the invention is to increase the strength and load capacity of a screw head.

Указанна цель достигаетс тем, что в винте, содержащем стержень и полукруглую головку с двум парами оппозитно расположенных полушлицев, перемычка между полушлицами выполнена.шириной, превышающей ширину полушлицев, угод между боковыми противоположными стенами каждого полушлица меньше 90°, а донышки полушлицев перпендикул рны к их торцовым стенкам.This goal is achieved in that in the screw containing the shaft and the semicircular head with two pairs of oppositely located half-slots, the jumper between the half-slots is made. The width exceeding the width of the half-slots is less than 90 ° between the opposite side walls of each half-slots, and the bottoms of the half-slots are perpendicular to them end walls.

На фиг. 1 изображен общий вид винта; на фиг. 2 -вид А на фиг. 1; на фиг. 3 - головкаIn FIG. 1 shows a general view of the screw; in FIG. 2, view A in FIG. 1; in FIG. 3 - head

Claims

SUMMARY OF THE INVENTION A screw comprising a shaft and a semicircular.-Head with two pairs of opposed half-slots, characterized in that, in order to increase the strength and load capacity of the head,

screws with one pair of half-slots; in FIG. 4 is a section AA in FIG. 2. showing the interaction of the screw with the tool.

The screw consists of a semicircular head 1. neck 2, shaft 3, half-holes 4. Half-holes are cut on the screw head, and a jumper b is left between them with a width exceeding the width of the half-holes a (Fig. 3).

The screw is used in a known manner. For example, the half-slots 7 of the hollow part b of the screwdriver 5 are inserted onto the semicircular screw head so that their half-slots engage and the spherical surfaces are in close contact, after which the screwdriver 5 is twisted in a known manner (Fig. 4).

The absence of slots in the central part of the screw increases the strength of the screw head, and due to the forceful interaction of the mounting tool with the spherical surface of the groove of the screw, a reduction in the screwing force is achieved.

0

. (56) U.S. Patent No. 2289561, cl. 45-85, 1940..

UK Patent N; 2103750, cl. F16 At 23/00. 1983.

the slippers between the half-slots are made wider than the width of the half-slots, the angle between the side opposite walls of each half-slot is less than 90, and the bottoms of the half-slots are perpendicular to their end walls.

I

VK

1

Type A

FIG. 2

A-l

Fig 4