RU188583U1 - SCREW-DRIVER SPECIAL - Google Patents

Abstract

The utility model relates to a hand-held assembly tool, namely, a screwdriver nozzle device special for screwing and unscrewing fasteners in the form of mounting racks with a truncated cone head and a simple slot in places with limited access in electronic equipment products (CEA). Technical The result, the achievement of which the claimed technical solution is aimed at, is to create a special screwdriver nozzle that ensures high accuracy of its deployment (positioned i) on the head of the fastener, made in the form of a truncated cone, when screwing and unscrewing the fasteners, mainly in the form of mounting racks in places with limited access, excluding the possibility of the head breaking. adjacent to the other side. The blade is made in the form of a plate of constant thickness. At the same time, from the side of the free edge of the blade, a profile groove of a trapezoidal shape is formed in plan, forming a central working area, the surfaces of which are in contact with the mating surfaces of the slot of the fastener head, and its length L is chosen from the condition: L = 0.8 h, where h is the slot depth fastener heads. In this case, the side surfaces of the profile groove are identical to the lateral surface of the fastener head.

Description

The invention relates to a hand-held fitter tool, namely, a screwdriver nozzle device special for screwing and unscrewing fasteners in the form of mounting racks with a truncated cone head and a simple slot in places with limited access in electronic equipment products (CEA).

The prior art known screwdriver (Patent for invention RU №2072909, IPC: В25В 15/00, 1997) for screws with straight slot contains a rod, at least one of the ends of which is made by the worker. The working end is made in the form of a protrusion with parallel working planes, mating surfaces of the screw slot and a length of 1.52 of the depth of the slot of the latter.

The prior art known screwdriver (Patent for invention RU №1341014 IPC: W25B 15/02 1987), containing a rod with a handle at one end and a blade at the other. Through the thickness of the blade is made to interact with the head of the fastener protrusions cone-shaped with an angle at the apex facing the handle.

The closest in technical essence and achievable results to the proposed technical solution is a BITS DIN3127 / ISO 2351 screwdriver nozzle for screws with a simple slot (STAHLWILLE Company Program 2008/2009 p. 152), containing a cylindrical rod, one of the ends of which is made by a worker, passing into the blade with parallel working planes, mating surfaces of the slot of the fastener and a hexagonal shank adjacent to the other side.

The technical problem solved by the creation of a utility model is the possibility of the destruction of the fastener head, made in the form of a truncated cone, due to the low accuracy of the base (positioning) of the tool on the head in places with restricted access.

The technical result, which is aimed at achieving the claimed technical solution, is to create a special screwdriver nozzle that provides high accuracy of its basing (positioning) on the fastener head, made in the form of a truncated cone, when screwing and unscrewing fasteners mainly in the form of mounting racks in places with limited access excluding the possibility of destruction of the head.

To achieve a technical result, the screwdriver nozzle contains a rod with a blade on the side of the working end and a shank adjacent on the other side. The blade is made in the form of a plate of constant thickness. At the same time, from the side of the free end of the blade, a profile groove of a trapezoidal shape in plan is made, forming a central working area, the surfaces of which are in contact with the mating surfaces of the slot of the fastener head, and its length L is chosen from the condition:

L = 0,8h

where h - the depth of the slot heads of the fastener.

The side surfaces of the profile groove are identical to the side surface of the fastener head.

The essence of the utility model is illustrated by drawings, where:

FIG. 1 - a general view of a special screwdriver bit;

FIG. 2 - front view;

FIG. 3 is a side view;

FIG. 4 is a top view;

FIG. 5 is a view of a screwdriver bit on the head of a fastener when screwed in or unscrewed.

A special screwdriver head contains a rod 1 (Fig. 1, 2, 3) of a cylindrical shape with a blade 2 (Fig. 1, 2, 3) at the working end 3 (Fig. 1, 3, 4) and a shank 4 (Fig. 1, 3) adjacent to the opposite end.

The shank 4 is made in the form of an elongated hex, for example, with an external size of 1/4 "in accordance with DIN3126 / ISO1173 form C6, 3, which allows you to use different holders for BITS nozzles or a screwdriver with the same size for installation tool.

The length of the rod 1 and the shank 4 may vary depending on the technological features of the special screwdriver nozzle.

Blade 2 is made in the form of a plate of constant thickness (Fig. 3) of a trapezoidal shape (Fig. 2), expanding towards the free end, with rounded inclined surfaces 5 (Fig. 1), and corners 6 (Figs. 1, 2, 4) rounded radius of one size. On the side of the free end of the blade 2, a profile groove 7 (FIG. 1) of a trapezoidal shape in plan (FIG. 2) is made, the smaller base of which is located near the working end 3 of the rod 1, forming the central working section 8 (FIGS. 2, 4). The side surfaces 9 (Fig. 2, 4) of the profile groove 7 of the blade 2 are identical to the side surface 10 (Fig. 5) of the head of the fastening element 11 (Fig. 5), made in the form of a truncated cone, increasing the reliability and accuracy of the home (positioning) blade 2 screwdriver bit special. The length L (Fig. 2) of the central working area 8 of the blade 2 is selected from the condition:

L = 0,8h

where h is the depth (Fig. 5) of the slot of the head of the fastening element 11.

Work special screwdriver nozzle as follows. The blade 2 of the screwdriver nozzle by means of the central working section 8 enters the slot of the head of the fastening element 11, for example, the mounting rack for radio electronic elements, while the surfaces 12 (Fig. 4) of the central working section 8 are in contact with the response surfaces of the slot of the head, the lateral surfaces 9 of the profile groove 7 in contact with the side surface of the head 10, and the surface of the working end 3 of the rod 1 is in contact with the end surface 13 (Fig. 5) of the head, and the fastening element 11 is screwed or unscrewed th destruction of the head.

Claims (6)

1. A screwdriver nozzle containing a rod with a blade on the side of the working end and a shank adjacent on the other side, characterized in that the blade is made in the form of a plate of constant thickness, while from the side of the free end of the blade there is a profile groove of a trapezoidal shape in the plan forming the central the working area, the surface of which is in contact with the mating surfaces of the slot of the head of the fastener, and its length L is chosen from the condition: L = 0,8h where h - the depth of the slot heads of the fastener, however, the side surfaces of the profile groove are identical to the side surface of the fastener head. 2. Screwdriver nozzle according to claim 1, characterized in that the blade is made of a trapezoidal shape, extending to the free end with rounded inclined surfaces and angles with a rounded radius of the same size. 3. Screwdriver nozzle according to claim 1, characterized in that the smaller base of the profile groove is located near the working end of the rod.

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