RU178312U1 - UNIVERSAL END HEAD - Google Patents

Abstract

The invention relates to hand tools for screwing / unscrewing fasteners, such as hex nuts and bolts. A universal end head comprising a housing including two parts located on the same axis, the first part being solid and having a central hole in the form of a polygon - the “connecting square”, and the second part is made essentially cylindrical and hollow having the shape of a regular hexagon, moreover, on its inner surface, the second part has a hexagon of maximum size, and inside it movable hollow hexagons with free movement relative to each other and the body, movable lye hexahedron capable when pressed away inwards by a height of the nut or bolt head and returns to its original position under the action of an elastic material of each hollow hexagon. The claimed technical solution allows to increase the productivity of the collector and increase the effort on the key when unscrewing or tightening nuts of various sizes. 3 s.p. f-ly, 1 ill.

Description

The invention relates to hand tools for screwing / unscrewing fasteners, such as hex nuts and bolts.

A device related to hand tools for accelerated screwing and unscrewing of nuts, screws, bolts, mainly small types of sizes, and can be used, in particular, as a ring spanner wrench. The wrench is equipped with a detachable casing and two larger and smaller heads located at the ends of the casing with hexagonal inner surfaces symmetrical with respect to the longitudinal axis of the wrench to provide for loosening or tightening nuts with different size hexagonal ends for each head. Inside the housing there is a movable rod with a rectangular profile at the ends, having an external thread in its middle part, and a lock nut, the internal thread of which is interfaced with the external thread on the rod. The stem is equipped with a protrusion having an end surface of a V-shaped profile with an opening angle of 120 °, and placed in a larger head with the formation of a larger hexagonal inner surface of the head together with the end surface of the rod protrusion in terms of a regular hexagon, two opposite corners of which lie on the longitudinal axis the key. In the middle part of the body, a rectangular through hole is made to place a lock nut in it, which is mounted on the stem with the possibility of rotation relative to the body to communicate with the rod movement inside the body along the longitudinal axis of the latter. [one]

The technical result of the analyzed device is to increase the tightening or unscrewing force of the nut with the wrench head used for large nuts without damaging its end faces.

The disadvantage of this device is that the capture of nuts occurs on four faces, due to which there is a possibility of slipping, also two faces are captured by the moving part, which does not give a tight contact. The analyzed key has large dimensions, because of this it is impossible to use it in hard-to-reach places.

A universal key is known, comprising a flexible adjustable gripping element and a lever with a handle and a stop adjusting the length of the flexible element and the stop pivotally connected to one end thereof, the lever is hollow, the stop is fixed at its end, on the side surface and has projections, and the key is equipped with the free end of the flexible element with a staple-shaped fifth having protrusions for interacting with the gripping element and locking grooves for interacting with the protrusions of the stop. [2]

The technical result of the device is to increase reliability.

The disadvantage of this universal key is that the flexible element will not be able to hold the nut tightly, preventing it from scrolling, and also has large dimensions, because of the ego it is difficult to use it in hard-to-reach places.

A universal end head is known for screwing in / out fasteners, comprising a housing comprising two parts located on the same axis, the first part being solid and having a central hole, and the second part being substantially cylindrical and hollow, with a 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 bases, while the height of the teeth is selected t Coy, to ensure engagement with the outer surface of the fastener when screwing / unscrewing. [3]

The technical result of such a device is to increase the allowable effort on the key when loosening or tightening larger nuts with the head of the key, without damaging the faces of the end surface of the nut.

The disadvantage of this device is not tight contact with nuts, in which the number of faces is equal to or greater than six, because of which this head cannot hold a large load, due to which the faces of the heads of bolts and nuts can be broken.

A universal head for screwing and unscrewing a fastener is known, which comprises a cast housing consisting of two parts located on the same axis, the first part being solid and having a central hole in the form of a polygon - a connecting square, and the second part is made essentially cylindrical with a hollow inner surface in the form of a hexagon of maximum size, inside of which there are hollow hexagons made of steel, made movable with the possibility of free running relative relative to each other inside the hexagon housing to the height of the head of the fastener and return to its original position when screwing it in and out. [four]

The technical result of such a device is tight contact with the faces of the nuts.

The disadvantage of this device is the low productivity of the collector and the low effort on the key when loosening or tightening nuts of various sizes.

The proposed technical solution avoids the disadvantages of the considered analogues.

The technical result of the claimed device is to increase the productivity of the collector and increase the effort on the key when unscrewing or tightening nuts of various sizes.

This is achieved by the fact that the universal socket head for screwing in and unscrewing a fastener containing a molded case, consisting of two parts located on one axis, the first part is solid and has a central hole in the form of a polygon - a connecting square, and the second part is made essentially cylindrical with a hollow inner surface in the form of a hexagon of maximum size, inside of which are hollow hexagons made of steel, made movable with the possibility of free one stroke relative to each other inside the hexagon housing to the height of the head of the fastener and return to its original position when screwing in and unscrewing, and inside the second part there are hollow silicone hexagons, with each hollow silicone hexagon made fit onto its corresponding hollow steel hexagon with tight coverage of the head of the fastener when screwing it in and out when the remaining hexagons are immersed inside the housing, according to the utility model hollow silicone hexagons are located inside the second part, while each silicone hollow hexagon is mounted on a corresponding steel hollow hexagon to ensure tight coverage of the fastener head when screwing it in and out when the remaining hexagons are immersed inside the case. Inside the casing there are movable hollow hexagons with free running relative to each other and the casing, capable of going into the height of the nut or bolt head under load and returning to its original position under the influence of the elastic material of each hollow hexagon.

The claimed technical solution allows to increase the productivity of the collector and increase the effort on the key when unscrewing or tightening nuts of various sizes.

Comparison of the proposed solutions with analogues and prototype did not allow to identify in them the signs that distinguish the claimed solution, which allows us to conclude that the criterion of "novelty".

The drawing shows a section of a universal end head containing the housing 1, an elastic silicone hollow hexagon, the inner layer of which is 19 mm 2, a movable hollow hexagon of high alloy steel, the inner layer of which is 19 mm 3, an elastic silicone hollow hexagon, the inner layer of which is 17 mm in size 4, a movable hollow hexagon made of high alloy steel, the inner layer of which is 17 mm 5, an elastic silicone hollow hexagon, an inner layer of which is 14 mm in size 6, a movable hollow hexagon k of high alloy steel, the inner layer of which is 14 mm 7, an elastic silicone hollow hexagon, the inner layer of which is 12 mm 8, a movable hollow hexagon of high alloy steel, the inner layer of which is 12 mm 9, an elastic silicone hollow hexagon, the inner layer of which is 10 10 mm, a movable hollow hexagon made of high alloy steel, the inner layer of which is 10 mm 11, a bolt with a cap 14 mm 12, a “connecting square” 12.5 mm 13, a molded hexagon with an outer side 10, made at the same time with housing 14, a hollow space for nuts, bolts, holes for rotation on the shaft 16, a housing having an inner face in the form of a hexagon with a size of 22 mm 17.

The device and principle of operation of the universal head.

Using the press, a one-piece case is drawn out, comprising a case 1, case 17, hexagon 14. Elastic silicone hollow hexagons 2, 4, 6, 8, 10, made of silicone grade LIM6909-40A / B, each individually and in the corresponding template they sit on a two-component polyurethane adhesive on the corresponding movable hollow hexagons made of high-alloy steel grade X18H12M2T 3, 5, 7, 9, 11. After stripping the adhesive, drying it and re-stripping it on each hollow hexagon, they are assembled and the entire assembly is lowered into the case 17, as well as its fit on a two-component polyurethane adhesive.

When a bolt or nut head acts on these movable hollow hexagons, the interfering movable hollow hexagons are immersed in, and the remaining ones tightly clasp the head of the bolt 14, which is previously screwed onto the seat (not shown).

Universal end head is able to withstand high loads due to the fact that the load from the moving hexagons is distributed on the housing 17 and the hexagon 14.

The proposed universal end head will allow you to unscrew the bolts sizes 10, 12, 14, 17, 19, 22 with one head, shown in the above example, and is able to withstand high loads, while being compact.

Combinations of different numbers of sizes, both smaller than two, and larger, are possible.

Information sources

1. Patent RU 2541256, cl. C1 IPC В25В 13/06, publication date 02/10/2015.

2. Patent RU 2048978, cl. C1 IPC В25В 13/52, publication date 11/27/1995.

3. Patent RU No. 57185, IPC В25В 13/00, publication date 10/10/2006.

4. Patent US 6467379 B1, B25B 13/06, 10/22/2002.

Claims (1)

A universal head for screwing in and out a fastener containing a molded case consisting of two parts located on the same axis, the first part being solid and having a central hole in the form of a polygon - a connecting square, and the second part is made cylindrical with a hollow inner surface in the form of a hexagon of maximum size, inside of which are hollow hexagons made of steel, made movable with the possibility of free running relative to each other inside the hexagon housing to the height of the head of the fastener and returning to its original position when screwing in and unscrewing, characterized in that hollow silicone hexagons are located inside the second part, while each hollow silicone hexagon is made planted on its corresponding hollow steel hexagon with the possibility of tight coverage of the head of the fastener when screwing it in and out when it immerses the remaining hexagons inside the case.

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