DE202019100775U1 - torque tool - Google Patents

Abstract

Torque tool having a housing in which a predetermined torque adjustable Absprungmechanik is arranged and which has a handle and a working part for direct or indirect connection to a screw, the housing having a display for presentation and / or representation of the working part on the screw having a transferable singular torque value, characterized in that the housing (1) in the region of the handle (2) has a second display (3) which deviates from the torque value displayed on the first display (4) with that on the first display ( 4) displayed torque value associated, in particular complementary physical size.

Description

The invention relates to a torque tool having a housing, in which a predetermined to a predetermined torque Absprungmechanik is arranged and which has a handle and a working part for indirect and / or direct connection to a screw, wherein the housing is a display for presentation and / or presentation a transmittable from the working part on the screw singular torque value.

Corresponding torque tools are known from the prior art. Torque tools are used for controlled screw tightening, for example, to provide a secure screw connection or to prevent damage to each other to be screwed components by excessive torque. For example, DE-GM 1 757 096 discloses a torque wrench with an adjustable pressure spring arranged in a handle, which acts via a transmission gear on a nut, which is indirectly connectable with a screw connection. In this prior art torque wrench, the transmission gear consists of three or more longitudinally successively arranged pivoting levers, one of the compression spring adjacent rigid end of the gear lever acts directly on a pivoting its effective lever length angle lever on a spring piston. Visible, this known torque wrench also has a handle. In the area between the handle and the working part, a display is provided on which a transferable from the working part of the screw singular torque can be adjusted, so that this torque is also displayed.

On the basis of this prior art, the invention is based on the task of further developing a torque tool in such a way that alternative and / or supplementary information, for example about the setting of the torque tool, is displayed to a person handling it.

The SOLUTION of this task provides in a generic torque tool, that the housing in the region of the handle has a second display, which deviates from the torque value shown on the first display, related to the torque value shown on the first display, in particular complementary physical quantity displays.

As a result of the embodiment according to the invention, it is possible for the person handling to be presented not only with a singular torque value, but also, for example, with a further indication. This may be, for example, the torque value in an alternative unit, such as lbf ft or lbf in. But it can also be displayed a supplementary physical size. Furthermore, it is advantageous in the invention that the values are displayed in two displays, so that confusion and / or erroneous readings can be prevented.

For this purpose, it is advantageous if the second display has a vernier scale. A vernier scale is a moving length scale designed to increase reading accuracy on physical quantity meters, such as lengths, forces, torques or angles, but also to increase the accuracy of readjusting and / or adjusting torque values to be transmitted by a torque tool. In this case, there is the advantage that due to the increased reading accuracy, the set torque value can be recognized exactly, so that overloading of a screw connection to be tightened can be prevented.

It is provided according to a further feature of the invention that the first display and / or the second display are designed analogously. The second display here supplements the first display to the effect that the second display shows a finely divided indication of the torque value.

Preferably, the second display is arranged at the free end of the handle, so that it can also be viewed when handling the torque tool. Furthermore, it has proved to be advantageous to arrange the first display collinear to the second display. When the torque tool is used as intended, therefore, the person handling can easily read both the first display and the second display without requiring a relative movement of the torque tool, for example about its longitudinal axis. Both displays are identifiable throughout the use of the torque tool to the operator without impairment. For this purpose, it is also possible, for example, to provide glass covers which have the shape of a magnifying glass so that the values and sizes shown below the glass covers are enlarged.

The handle is substantially round in cross section and / or the housing in the region of the working part is substantially polygonal, preferably rectangular, in particular square. The round in cross-section shaped handle has the advantage that it is ergonomically trained and can be taken without it on the palm of the user can cause pressure points due to existing edges, for example. With regard to the working part, a polygonal cross-sectional shape has proved to be advantageous, since in this way surfaces are provided which serve for receiving, for example, a screwing tool, namely the connection to a square. On the other hand, it is advantageous that by such a configuration rolling away of the torque tool is prevented.

In order to limit the weight of such a torque tool while providing high strength of the torque tool, it has been found advantageous to form the housing from a high strength aluminum alloy. Such an aluminum alloy provides the required strength and, moreover, a low specific weight. High strengths, for example, aluminum-copper alloys or aluminum-magnesium-silicon alloys, the latter being particularly suitable for extruded profiles.

The handling of the torque tool according to the invention is simplified in that the handle has a grip center marking, preferably in a region of the handle with the largest cross-section. For this purpose, it has proved to be advantageous that the handle is convex and has at its ends a diameter which is smaller than the diameter in the middle between the ends. This embodiment of the handle is used in particular to make the handling of the torque tool such that the hand of the person handling is always recognized in a same area, the handle center marker and an ergonomically preferred line of contact of a palm and thus the palm of the hand on the handle transmitted force are aligned collinear with each other. In this way, a high level of security is achieved that the hand of the person handling always correctly grasps the handle of the torque tool in a narrowly limited area and thus ensures that the force to be applied is transmitted in a defined area of the torque tool, namely in the area of the handle. Visually, this area is represented by the handle center mark also for the person handling. The configuration of the handle with a central portion having the largest diameter leads to a centering of the hand gripping the hand, which rests with the palm of the hand on the convex grip surface.

Further features and advantages of the invention will become apparent from the following description of the accompanying drawings.

• 1 ein Drehmomentwerkzeug in perspektivischer Ansicht und
• 2 einen Abschnitt des Drehmomentwerkzeugs in vergrößert dargestellter Draufsicht.

In the drawing show:

• 1 a torque tool in perspective view and
• 2 a portion of the torque tool in an enlarged plan view shown.

That in the 1 and 2 Torque tool shown has a housing 1 in which an adjustable to a predetermined torque Absprungmechanik is arranged, known per se and therefore also in 1 not shown in detail. The housing has a handle 2 and a working part 5 on, with the handle round in cross-section and the working part 5 is square in cross-section.

At the free end of the working part 5 is a square cross-section square arranged on the screwing tools of different spanner sizes are placed, so that the torque tool is suitable for different sized screw.

Visible points the housing 1 in the area of the handle 2 a first ad 4 on, which serves to represent a torque value. A second ad 3 is at the free end of the handle 2 arranged and serves to represent one with the one in the first display 4 represented torque value related physical quantity.

The second ad 3 is designed as a vernier scale. The first display is recognizable 4 and the second ad 3 collinearly arranged on the handle.

The housing 1 of the torque tool is made of a high strength aluminum alloy, whereby the weight of the torque tool can be reduced while sufficient strength is achieved, so that the torque tool is also suitable for the transmission of high torque to a screw without damaging the torque tool, in particular of the housing 1 comes.

The handle 2 has at its free end a hand attachment with a grip surface 7 on. This hand lug is convex in cross-section, so that it has at its two ends a relation to a central region of the hand lug smaller diameter. In this case, the diameter values of the hand attachment rise evenly from the two free ends in the direction of the center region. In the middle area of the handgrip is a grip center marker 6 arranged.

By this configuration, a person of a hand of a person handling substantially according to an arrow 8th in the middle area of the handle 2 transferred because the ergonomic handle training the hand of the person handling usually with a line of contact of a palm collinear to the handle center marker 6 attaches, since this an ideal gripping sensation for the person handling is achievable.

2 shows that the ad 4 in the region of a recess of the handle 2 is arranged, wherein the recess has a side surface 9 has, which is frosted and designed as a scale scale scale display 10 having. By this configuration, the readability and the exact adjustment of a torque is substantially improved, in particular by avoiding or reducing light reflections.

LIST OF REFERENCE NUMBERS

1

casing

2

handle

3

display

4

display

5

working part

6

Handle center mark

7

grip surface

8th

arrow

9

side surface

10

scale display

Claims (12)

Torque tool having a housing in which a predetermined torque adjustable Absprungmechanik is arranged and which has a handle and a working part for direct or indirect connection to a screw, the housing having a display for presentation and / or representation of the working part on the screw having a transferable singular torque value, characterized in that the housing (1) in the region of the handle (2) has a second display (3) which deviates from the torque value displayed on the first display (4) with that on the first display ( 4) displayed torque value associated, in particular complementary physical size. Torque tool after Claim 1 , characterized in that the second display (3) has a vernier scale. Torque tool after Claim 1 or 2 , characterized in that the first display and / or the second display (3; 4) are formed analogously. Torque tool according to one of Claims 1 to 3 , characterized in that the second display (3) at the free end of the handle (2) is arranged. Torque tool according to one of Claims 1 to 4 , characterized in that the first display (4) is arranged collinear with the second display (3). Torque tool according to one of Claims 1 to 5 , characterized in that the handle (2) in cross-section substantially round and / or the housing (1) in the region of the working part (5) is substantially polygonal, preferably rectangular, in particular square. Torque tool according to one of Claims 1 to 6 , characterized in that the housing (1) is formed of a high-strength aluminum alloy. Torque tool according to one of Claims 1 to 7 , characterized in that the handle (2) has a handle center mark (6), preferably in a region of the handle (2) with the largest cross section. Torque tool according to one of Claims 1 to 8th , characterized in that the handle (2) is convex and has at its ends a diameter which is smaller than a diameter in the middle between the ends. Torque tool according to one of Claims 1 to 9 , characterized in that the handle (2) is designed so that the normally concave shaped palm of the hand on the convex handle surface (7) inevitably centered. Torque tool according to one of Claims 1 to 10 , characterized in that the handle center marking (6) and an ergonomically preferred line of contact of a palm and thus the force transmitted from the palm to the handle (2) are aligned collinear with each other. Torque tool according to one of Claims 1 to 11 , characterized in that at least one display (3, 4) in the region of a recess of the handle (2) is arranged, wherein the recess has side surfaces (9), the at least partially matted and have in the frosted area a scale display (10), in particular a scale line.

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