ES2280135B1 - FIRST ADDITION TO PATENT P200402342 BY HANDLE UNION FOR UTENSIL OR MANUAL TOOL. - Google Patents

Abstract

First Addition to Patent P200402342 by attachment of handle for utensil or hand tool, in which the tool (2) has a blind hole (11) in which the head of the handle (1) is embedded, and consists of a screw fixing (7) with built-in self-locking (4), which stops at the tool (2), and is screwed indirectly into the head of the handle (1) by means of a third element (3) that is fixed without the possibility of turning on the head of the handle (1), this third element (3) and the head of the handle (1) being of different material. Preferential application in hand tools, such as hammers or mallets.

Description

First addition to patent P 200402342 by: "Handle joint for utensil or hand tool".

The tools, utensils, tools or Manual instruments have a handle that must be attached to the tool set, for example, hammers, axes, hoes, etc.

This union deteriorates with use and Continuous pounding, causing wear and slack harmful.

The main patent solves this problem achieving:

- a union of adjustment and / or precision between the handle and tool,

- a union that remains smoothly to through time, use and blows,

- a union capable of regulating its fit-tighten,

- a maximum security union that prevents disengagement of the adjustment and the output of the handle relative to the tool.

With the union of the invention, the life of the useful and its benefits are maintained over time as in the first day of use

The object of the present invention particularizes this union between handle and useful in which:

a) the tool has a hole, blind by means of a front wall, in which the head of the handle, leaving the extreme surface of said head of free handle inside said blind hole

b) having a fixing screw, with self-locking incorporated to the screw, whose body is joined by screwed, indirectly to the head of the handle, and consisting of a head that stops indirectly in the tool using a washer; so that the handle head can move longitudinally acting as a nut with respect to the screw Fixing.

The mentioned front wall of the tool is shaped forming a unique whole with its own useful. Fixing screw it goes through a small hole in the wall of the tool and is screwed indirectly on the head of the handle by means of a third element that is fixed to the head of the handle, being the third Element and handle head of different material.

Between the third element and the handle head at least one pin is provided that performs anti-rotation function to a screwed from the third element to the handle head and function of axial stop against the head of the handle preventing disunity of the third element of the handle head.

The self-locking is applied directly to the screw body; so that, in the beating, the vibrations do not They can unscrew the screw.

The blind hole, the handle head, the third element and the screw that joins them are coaxial.

Further:

- the fixing screw head is arranged in a countersunk bearing said washer in said hole;

- the handle head is tightly tightened in the area of the mouth of the blind hole.

To better understand the purpose of this invention, a preferred form of practical realization, susceptible to accessory changes that do not distort its foundation.

Figure 1 is a longitudinal section of a practical embodiment of the object of the invention according to this Addition.

An example of practical, non-limiting embodiment of the present invention.

In this Addendum, as in the Patent principal:

- The tool (2) acts as a female and for this purpose of a hole (11) in which the handle head (1) is embedded What does male.

- The surface of the hole (11) and the outer surface of the handle head (1) are conjugated, perfectly adjusted to each other, for example, because both have Received precision machining. The blocking between the two Surfaces is perfect.

- The surface of the hole (11) is convergent, that is, the surface of its section is decreasing along the hole, said section presenting any shape from the elliptical or polygonal circular.

According to the present invention:

The hole (11) is blind, blinded by a front wall (20) that forms a unique whole with the tool itself (2).

Said front wall (20) -see figure 1- behaves a small hole (21) crossed by the fixing screw (7) which is screwed indirectly to the head of the handle (1) by means of a third element (3), which is fixed to said handle head (one).

In particular, and according to the embodiment represented, said hole (21) housing the screw (7) forms a countersink (22) in which a washer (6) is arranged so that the head (9) of the fixing screw (7) stops indirectly in the tool (2) and, when screwing, the handle head (1) can be moved longitudinally as a nut with respect to the fixing screw (7).

The fixing screw (7) is self-locking (4) incorporated into the screw itself. More particularly, the self-blocking (4) is applied directly to the body (16) of the screw (7) -see figure 1- so that, in the beating, the Vibrations cannot unscrew the screw (7).

The blind hole (11), the handle head (1), the third element (3) and the screw (7) that joins them are coaxial

The union between said third element (3) and the head of the handle (1) is done in a double way:

a) forming at the end of the element (3) a projection (12) externally screwed (13);

b) radially providing a pin (8) that performs anti-rotation function of said element (3) with respect to the head of the handle (1) and axial stop function against said handle head (1) thus preventing the disunity of said third element (3) and the handle head (1).

Additionally, the handle head (1) is tightly tightened in at least the mouth area (a_ {1}) of the blind hole (11) of the handle (1) -zone (a_ {1}) in the figure one-.

Claims (8)

1. First Addition to Patent P200402342 by attachment of handle for tool or hand tool, characterized in that: a) the tool (2) has a hole (11), blind by a front wall (20), in which the handle head (1), leaving the extreme surface (X) of said handle head (1) inside said blind hole (eleven) b) having a fixing screw (7), with self-locking (4) incorporated into the screw, whose body (16) is screwed together (15), indirectly to the head of the handle (1), and that consists of a head (9) that stops indirectly in the useful (2) using a washer (6); so that the head of the handle (1) can move longitudinally as a function of nut with respect to the fixing screw (7). 2. First Addition to Patent P200402342 by attachment of handle for utensil or hand tool, according to previous claim, characterized in that said wall (20) of the tool (2) is formed forming a single whole with the tool itself (2). 3. First Addition to Patent P200402342 by attachment of handle for tool or hand tool, according to previous claims, characterized in that the fixing screw (7) crosses a small hole (21) of the wall (20) of the tool (2) and it is screwed indirectly into the head of the handle (1) by means of a third element (3) that is fixed to the head of the handle (1), the third element (3) and the head of the handle (1) being of different material . 4. First Addition to Patent P200402342 by attachment of handle for tool or hand tool, according to previous claims, characterized in that between the third element (3) and the head of the handle (1) there is at least one pin (8) which makes anti-rotation function to a screwed (13) of the third element (3) to the head of the handle (1) and axial stop function against the head of the handle (1) preventing the disunity of the third element (3) of the head of the handle ( one). 5. First Addition to Patent P200402342 by attachment of handle for utensil or hand tool, according to previous claims, characterized in that the self-locking (4) is applied directly to the body (16) of the screw (7); so that, in striking, the vibrations cannot unscrew the screw (7). 6. First Addition to Patent P200402342 by attachment of handle for tool or hand tool, according to previous claims, characterized in that the blind hole (11), the head of the handle (1), the third element (3) and the screw (7 ) that unites them are coaxial. 7. First Addition to Patent P200402342 by attachment of handle for tool or hand tool, according to previous claims, characterized in that the head (9) of the fixing screw (7) is arranged in a countersink (22) carrying said washer (6) ) in said hole (21). 8. First Addition to Patent P200402342 by attachment of handle for tool or hand tool, according to previous claims, characterized in that the head of the handle (1) is adjusted with tightening in the area (a_ {1}) of the opening of the blind hole (eleven).