DE8433456U1 - BENDING BAR TORQUE WRENCH WITH OPTICAL AND ACOUSTIC DISPLAY - Google Patents

Description

GEDORE tool factory, Otto Dowidat,

Remscheider Str. 149, 5630 Remscheid-Lüttringhausen

Password: "Torque display"

The invention relates to a bending rod torque wrench with an optical and acoustic display.

With the simple bending rod torque wrench, the opposite bending rod bends under the force of the operating hand the head piece of the torque wrench, after the screw connection has reached the "setting torque", the parts of the The screw connection should therefore be seated snugly.

A rigid pointer attached to the head piece of the torque wrench slides over one on the hand piece of the bending rod attached scale and shows the applied torque with the angle of bending of the rod.

Flexural torque wrenches of this type are structurally simple to manufacture and correspondingly inexpensive. However, you have that Disadvantage that the applied torque must be read off, which requires a certain amount of care and also the view of the scale is not even possible under many working conditions. Furthermore, reading errors arise due to the parallax when viewing from crooked angles.

Flexural rod torque wrenches are also known in which the Pointer on the head piece is arranged to be difficult to rotate and by means of which the intended tightening value is set on the scale will. If the rod bends, the end of the pointer touches a release mechanism which, under spring tension, emits an acoustic trigger generated oil signal.

In the previously known embodiments are the components for generating the acoustic signal centrally above the bending rod. The noise generator is raised by lifting it and twisting a spring-loaded button "loaded". Two hands are required for this.

With the subject matter of the invention, these disadvantages are avoided. By arranging the components for generating the acoustic signal laterally next to the bending rod, it is possible with the Finger of the operating hand to reach the push button and press it. The time required for reloading is very short. The process itself fits in harmoniously with the entire workflow.

With the well-known torque wrench "loading" by pulling a button with the second hand, there is also a « Rotary movement of the knob necessary, which must be done consciously. In the subject matter of the invention, this twist was necessary the piston with its nose is automated in that .this nose is guided in a recess in the housing pot, which is designed to run obliquely to the scale and the stop nose forcibly when the actuating button is pushed up brings it to rest at the correct point on the scale.

In Figure 1 of the drawings, the invention is shown in a diagrammatic representation. The bending rod torque wrench consists from the bending rod (l), which with its end (2) in a radial bore of the head piece (3) is attached. The head piece (3) has a square socket for attaching a socket wrench.

At the other end of the bending rod are the handle (5) and the scale body (6), which on the bending rod by means of a molded pipe section is pushed on and secured against displacement and rotation by means of a grub screw. Of the One end (8) of the pointer (7) is attached to the head piece (3) so that it can rotate with difficulty. The degree of stiffness is determined by the adjusting screw (12). Now is the torque wrench on a screw connection using a socket wrench insert attached and operated on the handle (5), the bending rod (1) bends in relation to the

Desired tightening torque set pointer (7). With his
At the end of (10) the pointer moves over the scale until it reaches the zero position. He touches the nose (25)
and moves it so that it is in the recess (18)
disappears and the ones that meet under spring pressure
Components produce a clearly audible tone. _;

In Figure 2, the individual parts of the scale body and the }, mechanism for acoustic display are shown in the manner of an exploded 4 drawing. The two halves of the scale body (6a I and 6b) are connected to one another by means of the screws (14)

or also glued. . The actuation projecting from the lower part (6b) ',, button (20) out, which is secured against falling out by the collar (a The piston (24) has an at its lower end | pins, by means of which it in the operating knob ( 20) is performed.

The already mentioned nose (25) disappears in the "uncharged" state in the recess (18) of the scale support upper part (6a), whereby
the spring (26) the piston (24) within the housing pot (15) _; pushes down in the direction of the actuation button. |

In the "charged" state, the nose is when the actuator is pressed button (20) on the inclined guide (17) of the housing pot (15)

guided along and settles down after releasing the button onto the upper part of the scale carrier (6a) and the one glued to it

Claims (2)

GEDORE tool factory, Otto Dowidat Remscheider Str. 149, 5630 Remscheid-Lüttringhausen Password: "Torque display" Expectations : Flexural torque wrench with optical and acoustic indication, characterized in that the components for emitting the acoustic signal are arranged on one side of the bending bar forming the center line, while the scale is used for adjustment of the tightening value is on the other side. 2. Torque wrench according to claim 1, characterized in that that the housing pot (15) has a recess (16) with an inclined guide (17), by means of which the stop nose (25) of the piston (25) after pressing and releasing the actuating button (20) in the zero position of the scale comes to rest on this.