RU57185U1 - UNIVERSAL END HEAD - Google Patents

Abstract

A universal end head of a device for screwing / unscrewing fasteners is proposed, comprising a housing including at least two parts located on the same axis, while one, the first, the part is solid and has a central hole, and the other, the second, part made essentially cylindrical and hollow. Moreover, the cross section of the first part has the shape of a polygon, and the specified second part has on its inner surface a lot of longitudinal teeth having a distance between their bases, while the height of the teeth is chosen so as to ensure interaction with the outer surface of the fasteners when screwing / unscrewing .

(Figure 5)

Description

This utility model relates to devices for screwing / unscrewing fasteners, such as, for example, nuts, bolts, screws, studs, etc. In particular, the present utility model relates to a universal end head for said screwing / unscrewing device for fasteners.

In the prior art, for screwing in / unscrewing fasteners, end heads have been used comprising a housing including two parts located on the same axis (see, for example, Patent Publication RU 2198087 C2). In this case, one of the indicated parts was made continuous with the central hole, and the other was made essentially cylindrical and with a cavity having the shape of a regular polygon, in particular, a hexagon.

However, the use of socket heads according to the prior art was not effective, since screwing in and unscrewing fasteners with different profiles required an appropriate number of socket heads, which are not always available.

Thus, the purpose of this utility model is to create a universal end head, with which you can perform the operation of screwing and unscrewing many fasteners with a variety of profiles.

The above goal is achieved by creating

universal end head of the device for screwing / unscrewing fasteners containing a housing comprising at least two parts located on the same axis, while one, the first, the part is solid and has a central hole, and the other, the second, part is made essentially cylindrical and hollow, and the cross section of the first part has the shape of a polygon, and the specified second part has on its inner surface a lot of longitudinal teeth having a distance between their bases, while comb teeth is chosen such as to ensure engagement with the outer surface of the fastener when screwing / unscrewing.

Preferably, the distance between the bases of the teeth is from about 1.6 to about 4 mm, and the thickness of the teeth is from about 1.2 to about 2.5 mm.

The profile of the apex of the longitudinal teeth can be made in the form of a forceps.

Advantageously, the central opening of the first part of the housing is substantially cylindrical or polygonal.

Preferably, recesses are made on the outer surface of the first part to fix the head with a retaining ring on the ratchet key.

The head can be made of a vanadium-chromium alloy.

Advantageously, the die is stamped.

Most preferably, the cross section of the first part has the shape of a regular hexagon.

The specified head is designed for twisting and

twisting fasteners with profiles having at least three faces.

In addition, most preferably, the number of teeth of said head is 12.

Next, the present utility model will be described in more detail with reference to the accompanying drawings, in which:

Figure 1 is a side view of a universal end head according to the present utility model;

Figure 2 is a view along arrow B of the head of Figure 1;

Figure 3 is a view along arrow A of the head of Figure 1;

Figure 4 is an enlarged view of a region B of Figure 3; and

Figure 5 - examples of profiles of fasteners screwed / unscrewed universal socket head according to the present utility model.

As shown in FIG. 1, the universal end head 1 of the device for screwing / unscrewing fasteners (not shown) comprises a housing including at least two parts 2, 3 located on the same axis. The first part 3 is solid and has the Central hole 4 (see Figure 2). Another, second, part 2 is made essentially cylindrical and hollow. The cross section of the first part 3 has the shape of a polygon. Said second part 2 has on its inner surface a plurality of longitudinal teeth 5 having a distance L between the bases. The height of the teeth 5 is chosen so as to ensure interaction with the outer surface of the fasteners 6a-6d (see Figure 5) when they are screwed in / out. In this case, the preferred amount

teeth 5 on the inner surface of the second part 2 is 12 for unscrewing and twisting fasteners with profiles having at least three faces (for example, for twisting / twisting such profiles as shown in Fig. 5, namely square (6a ), in the form of an asterisk (6b), hexagonal (6c), twelve-sided (6d) and Spline-type profiles (6d)).

The distance L between the bases of the teeth 5 is from about 1.6 to about 4 mm, depending on the diameter of the second part 2 of the end head 1. Also, the height of the teeth 5 can be from about 1.2 to about 2.5 mm.

The profile of the apex of the longitudinal teeth 5 is preferably performed in the form of a forceps 7.

According to a preferred embodiment, the central hole 4 of the first housing part 3 is substantially cylindrical in shape (see FIG. 2). However, it may have any other shape suitable for a particular use, for example, the shape of a polygon.

In addition, the socket head 1 can be fixed on, for example, a ratchet key (not shown), by making recesses 8 on the outer surface of the first part 3 for fixing the head 1 with a retaining ring (not shown). At the same time, the cross section of the first part 3 has the shape of a regular hexagon for the convenience of attaching the head 1, for example, to a ratchet key.

The head 1 described above is usually made of a vanadium-chromium alloy, although any suitable material having sufficient

stiffness. In addition, the socket head is performed by any method known in the art, for example, by stamping.

Claims (12)

1. Universal end head of the device for screwing / unscrewing fasteners, comprising a housing that includes at least two parts located on the same axis, while one, the first, the part is solid and has a central hole, and the other, the second, the part is made essentially cylindrical and hollow, characterized in that the cross section of the first part has the shape of a polygon, and the specified second part has on its inner surface many longitudinal teeth having a distance between their base iyami, wherein the height of the teeth is chosen such as to ensure engagement with the outer surface of the fastener when screwing / unscrewing. 2. The head according to claim 1, characterized in that the distance between the bases of the teeth is from about 1.6 to about 4 mm. 3. The head according to claim 1, characterized in that the thickness of the teeth is from about 1.2 to about 2.5 mm. 4. The head according to claim 1, characterized in that the profile of the apex of the longitudinal teeth is made in the form of a forceps. 5. The head according to claim 1, characterized in that the Central hole of the first part of the housing has a substantially cylindrical shape. 6. The head according to claim 1, characterized in that the Central hole of the first part of the housing has a polygonal shape. 7. The head according to claim 1, characterized in that on the outer surface of the first part there are recesses for fixing the head with a retaining ring on a ratchet key. 8. The head according to claim 1, characterized in that it is made of a vanadium-chromium alloy. 9. The head according to claim 1, characterized in that it is stamped. 10. The head according to claim 1, characterized in that the cross section of the first part has the shape of a regular hexagon. 11. The head according to claim 1, characterized in that it is designed for twisting and twisting fasteners with profiles having at least three faces. 12. The head according to any one of the preceding paragraphs, characterized in that the number of teeth is equal to 12.