WO2015162136A1 - Tool comprising an at least two-stage, preferably rotationally symmetrical, telescopically retractable or extensible and lockable force-application system for rotatable connection elements - Google Patents

Abstract

The invention relates to a tool (1, 1x) comprising a first and a second preferably rotationally symmetrical, preferably lockable, force-application system (2) for rotatable connection elements (3, 3x), the latter being understood to mean a screw or nut, at least one force-application element (4a, 4b, 4c, 4h, 4i, 4l, 4m, 4n, 4x, 4y, 4z) being movable in translatory manner along a workpiece longitudinal axis (5) in order to form the force-application system (2).

Description

 Tool with an at least two-stage, preferably rotationally symmetrical, telescopically extendable or retractable, lockable, force application for rotatable connecting elements

description

The invention relates to a tool with an at least two-stage, rotationally symmetrical, telescopically extendable or retractable, lockable force application for rotatable connecting elements.

Such a tool according to the invention can be used simply and safely in various known actuating tools, such as screwdrivers, drivers, screwdrivers, automatic screwing machines, etc., or used as a stand-alone functional tool. The tool is preferably as a one-hand tool multifunctional, lightweight, space-saving and without complicated manual adjustment mechanisms available.

Especially with modern force attacks by tool tips, there is one

Variety of different sizes and profiles, which are often not kept in any required size or whose change is associated with set-up times.

In modern rotary fasteners with their specific profiles for power drives, there are often no alternatives to the specially designed drives and drive profiles. For this provides the

Tool according to the invention a mechanical interface with force application at different rotatable connecting elements ready. The tool according to the invention provides a rotationally symmetrical cascading force application which, when viewed axially, shows a flexible outer and inner contour which can be telescopically cascading in itself for each element. The tool according to the invention can be executed for many forms of, in particular rotatable, fasteners. Depending on which elements are moved in or out, there is a

External force attack or an internal force attack (inverted function). Thus, the tool according to the invention as an external force attack

or act as Innenkraftangriff and assume different sizes of a profile or different profiles. Here, any number of combination options are conceivable and the tool is extremely flexible due to the different force application profiles.

The prior art has a number of techniques including a

Provide force application, which provides change systems for force attacks in various sizes, shapes and profiles. The force attacks are usually changed manually from magazines and equipped.

Also known are revolver-like systems, such as DE 42 35 665 A1, which shows a screwdriver, the inserts with individual

Force attacks each individually from longitudinal openings of a hollow housing, similar to a ballpoint pen refills, retracts and retains.

For example, the force attacks under the designations Slot (SL), Phillips (PH), Cross, Xeno / Slot Cross (SL / PH), Pozidriv (PZ), Torx / External hexagon, Torx Tamper Resistant / Torx with inner hole, are generally known. Torx Plus, Torx Plus Tamper, Resistant, Hex / Hexagon / Hexagon socket / Hexagon External, Robertson / square / square / square, triangular / triangular / triangular, pentagonal, octagonal, Triwing, Torq Set, tensioner, slotted nut, nuts general, Y-type, multi-tooth XZN. These force attacks are either as an external force attack or as

Performed internal force attack, wherein for the function of the present invention, the terms external force attack or external drive and internal force attack or internal drive always in the sense of attack on the connecting element, so e.g. on the screw or the nut or the like, are to be understood. Thus, the respective external force attack can be actuated with a corresponding internal force attack, and vice versa. A common force attack is e.g. of the

Hexagon, which is known as Außenkraftangriff, and is offered as Innenkraftangriff example under the name Allen. There are also developments for a variety of applications, such.

Hexalobular force attacks, called Torx, and flattened hexalobular force attacks known as Torx Plus.

All these tools have in common that a large number of force attacks in a unit are combined via an internal or external magazine.

Task of the innovative tool is it for work and

Production processes to an efficient change of force attacks

enable.

This object is achieved by a tool according to claim 1 or by a tool system according to claim 7.

The invention provides a simple and safe tool with a variety of suitable force attacks that complement each other in particular in their functionality such that the force application can easily be done on a connecting element, such as a screw, adaptable and without changing a tool. With the tool according to the invention a one-handed operation is possible because the tool, especially for different sizes, not

must be replaced. In particular, such a tool allows a modular adaptive adaptation or a change possibility between a plurality of

Systems that are automatically or manually interchangeable and allow the user fast and secure, captive access. Under a tool according to the invention is a device for

 To understand torque transmission. Preferably, this torque is provided for driving a connecting element, preferably a screw or nut or the like. It is known from the prior art that connecting elements, such as preferably screws or nuts, profiles, in particular polygonal profiles, for torque transmission (tightening and loosening) have. Such profiles are as hexagon socket,

External hexagon, multi-tooth profile, slot or cross profile, known as a combination of several of the above or the like. A tool for transmitting torque to such a connecting element has

preferably a counter profile to the profile of the connecting element. In this case, a counter profile of the tool is preferably not limited to the conjugate profile of the connecting element (plug-socket principle), but is preferably to be understood as a force applied to the torque transmitting element on the connecting element. This principle is already known from the prior art, for example, tools are known which attack on the flat surfaces of a screw head of a hexagon bolt for power transmission and not at the six corners, as is the case with a hexagon socket wrench. Preferably, the tool extends along a tool longitudinal axis, more preferably, the tool is rotatable about this tool longitudinal axis for torque transmission. Preferably, with a first Force application of the tool torque on a profile of a first

Transferable connection element. Further preferably, torque can be transmitted to a second connecting element with a second force application of the tool. In particular, the profile of the second connection element differs at least in size or type from the profile of the first connection element.

For the purposes of the invention, a force attack is to be understood as meaning a geometrical profile on the tool which is set up according to plan for transmitting torque from the tool to the connecting element. An inventive tool has at least a first and a second force attack. Preferably, a first and a second force attack differs at least in the nature or size of its outline, this contour is arranged in a region of the tool which is adapted for torque transmission and preferably extends in an orthogonal plane to the tool longitudinal axis. Preferably, a force attack is formed from one, preferably several, force application elements. Further preferably, at least one, preferably several, of the force application element along the tool longitudinal axis are translationally displaceable.

Under a flexible outer and inner contour of the tool, in particular so the force application is to be understood in the context of the invention that the outer or inner contour of the tool, in preferably discrete stages, is variable. Preferably, the nature and / or size of these contours are variable. In particular, due to this variability, the tool can be adapted to different, at least to a first and a second, connecting element. Preferably, below the mold

or type to understand the nature of the profile for power transmission to the tool, more preferably so the nature of the course of the contour of the contour. For example, under a first force attack to

Torque transmission to a slotted screw and a second Power attack for torque transmission to a Phillips screw

to understand different types of power transmission profiles.

Translationally movable along the tool axis is to be understood in the sense of the invention that at least one first force application element or a second force application element or several force application elements along the tool longitudinal axis are displaceable, in particular against each other are displaceable. Preferably, a translational movement in this sense also means a movement of one of these force application elements, if this movement is combined with a rotational movement, in particular around the tool longitudinal axis.

Under a fastened to the tool adapter element in the sense of

Invention is a device to understand, which is adapted to fix the tool to an actuator, preferably to keep interchangeable.

Under an adaptive actuator is within the meaning of the invention a

Device for driving, preferably for manual or motor drive, to understand the tool. Preferably is under one

 Actuator to understand a manual or motorized, preferably electric motor or pneumatic driven device. More preferably, an actuator is one of a group of devices

selected, which comprises at least one of the following devices:

 - motorized screwdriver,

 - impact wrench,

 - torque wrench,

 - socket driver,

- Ratchet,

- Rotary tool with a handle or handle. Preferably, a first force application is at least partially disposed at a first distal end of a first force application element. Further

Preferably, a second force attack is at least partially disposed on a second distal end of the force application element. More preferably, the second force application is formed by this first force application element and by this second force application element. Preferably, the second is

Force application element for forming the second force application along the

Tool longitudinal axis displaceable. Under a tool system according to the invention are a

Understanding tool according to the invention and one of the actuating means, wherein the tool is fastened to the actuating device, is preferably mounted replaceably. For the purposes of the invention, "interchangeable" is to be understood as being preferably non-destructive and, more preferably, interchangeable without tools.

In particular, multistage solutions for a tool according to the invention are conceivable. Minimal solution here is in particular a two-stage tool, in particular a tool with two different force attacks. The following description refers largely to a three-stage system (tool with three different force attacks), which is expressly not the only form, as well as other stages or less stages technically telescopic / concentric can be implemented and used. Preferably, the terms FKMultibit and tool are used synonymously in the context of this invention.

In the case of an internal drive:

Preferably, the telescopically-cascaded head (force attacks / force application elements) on the head of a rotatable connecting element (such as a screw head, nut or the like) placed (here as a hexagon or Torx profile), so are preferably the individual movable elements / segments (force application elements), starting with the core element (smallest force application element), preferably inserted into the rear part of the "FKMultibit." This preferably takes place until the profile of the force application of the rotatable connection element (for example screw head, nut or the like) is filled in and the contour of the force application of the "FKMultibit" has a matching counter profile. In particular, depending on the number (n) of the cascaded telescopic elements, such an extended size range can be covered than can be achieved in particular with a single conventional rigid force application.

In the case of an external drive:

 If the telescopically cascaded head (force attacks / force application elements) is preferably placed on the head of a rotatable connecting element (for example screw head or nut or the like) (here eg as with an external hexagon profile), preferably the individual movable elements / segments (force application elements) starting with the core element (smallest force application element), preferably pushed into the rear part of the "FKMultibit", in particular until the profile of the force application of the rotatable connection element is enclosed. In particular, an extended size range can thus be covered than can be achieved with a single conventional rigid force application.

Preferably, in a three-stage model and a small rotatable connecting element of the head of the connecting element (for example, screws head) on the next larger telescopic ring (force application element) press. Preferably, in the case of a larger rotatable connection element, the bit head (force application, force application element) for the smaller rotatable connection element can be sunk within the next larger bit. In this case, preferably presses a variable mechanism in upper part of the FKMultibit the first bit (force attack element) back to the middle size. The uppermost bit size is preferably anchored rigidly in the FKMultibit, since, in particular, there is no longer any need to feed in order to rotate a rotatable connecting element.

The tool according to the invention can have one or more of the following advantages over other solutions:

From the multitude of different profiles of force impacts and drive systems of rotatable fasteners that can be covered with only a single tool head, there is less need to change the tool tip. At the same time less different tool tips are needed and the tool held can be significantly reduced. The lower amount of tool tips required also leads to weight savings during transport and cost savings in logistics.

The reduced frequency of change results in a minimization of search and set-up times and, as a result, more cost-effective production during use. The consistent one-hand operation during use also contributes to this. There are also other application scenarios, conceivable for production robots in industry, where shorter set-up times can lead to enormously increased efficiency. Another advantage is the conservation of resources through the smaller tool assortment required and the resulting reduced use of materials. This is particularly evident in processes in which many bits are used to drive different force attacks / profiles. The use of the FKMultibit minimizes operational risks, for example in the aerospace industry. Due to the reduced number of tool parts in the production and in the Maintenance work (eg for engines, drive units, maintenance of aircraft) reduces the probability of forgetting or forgetting tool parts used at the place of use / in the product / in safety-relevant areas.

Also, a weight saving over conventional solutions (e.g., bit set) is the sum of the parts.

This invention is easier to use maintenance-free and universally with adjustable blade length in the context of use.

Compared with conventional force application profiles and mechanisms (such as bits), the invention offers the possibility of using a flexible mechanism for moving the individual profile elements. Conceivable springs, electrical, electro-magnetic, pneumatic or hydraulic systems and a variety of telescopic drive systems.

The above advantages occur depending on the embodiment of the tool.

The figures show in partially schematic representation embodiments of the invention, in which:

1 shows a sectional view of a tool for the internal force attack, such as hexagon socket screw,

2 shows a sectional view of the tool and the displaceability of the force application elements for the internal force attack, Figure 3 shows a sectional view of the tool and the displaceability of the force application elements for the force outside attack, 4 shows a sectional view as a longitudinal and cross section for a force attack with cross or Philippsprofil, shows a sectional view as a longitudinal and cross section for a force attack with a plurality of profile and recess of the smallest force application element in the region of the tool longitudinal axis, shows a perspective view of a tool, 7 shows a force attack is formed from two force application elements in a sectional view orthogonal to the tool longitudinal axis.

Figure 1 shows a sectional view of a tool 1 according to the invention, which interacts with different screws (connecting elements). In this case, the size of the screw head of Figure 1 a) according to Figure 1 c) increases. The tool in Figure 1 has three stages, so it can be used, for example, Allen key (SW) 4 mm, 5 mm and 6 mm Allen screws. But it is also a two-stage or more than three-stage tool possible. The force attack 2, in the case of the Allen variant ie the hexagonal profile, is set up for torque transmission with the screw head 3. The force application is formed by the force application elements 4a to 4c. Depending on the wrench size is a different force attack 2 with the screw head 3 in conjunction. The force application elements 4a and 4b are translationally displaceable along the tool rotation axis and the force application element 4c is anchored in the tool 1. The force application elements, which are displaceable, are acted upon by a force by an actuator 6a / b and are displaceable against this force.

If the tool 1 is placed on a screw head 3 with a matching profile, and the force application element 4a is too small, so the screw head, for example, SW 6 and the force application element 4a SW4, so the force application element against the spring force upwards (see figure) is moved. Does the force application element 4b then SW 5, the same thing happens with this. Finally, the force application element 4c (SW 6) comes into contact with the screw head 3 (SW 6) and a torque transmission from the tool 1 to the screw head 3 by rotation of the tool 1 about the tool longitudinal axis is possible. The force application elements 4b and 4c are at least partially tubular, so that the force application element 4b, the displacement of the force application element 4a along the tool longitudinal axis in this section, at least partially, allows. The same applies to the force application element 4b with respect to the force application element 4c.

With the same tool, torque can be transferred to screws with SW 4 or SW 5 in further operations without the tool user having to make any intervention on the tool 1.

Figure 2 shows a sectional view of a tool 1 for the internal force attack on a screw head 3. In this case, the tool 1 is carried out in three stages. Figure 2a shows a tool 1 before the torque transmission during placement on the screw head 3. Here, the force application element 4a is too small for the profile which is provided in the screw head 3 for power transmission and is moved along the tool longitudinal axis 5 to the rear. The force application element 4b has the "correct" size for the screw head 3, for example, Allen key SW 8 on wrench SW 8. When the force application element 4b is displaced in the same direction as the force application element 4a, FIG. 4c) / d) sets the force application element 4c on the screw head 3 and a particularly secure grip and thus a particularly secure torque transmission to the screw head 3. Figure 3 shows a partially simplified sectional view of a tool according to the invention 1 x for an external force attack.The force application elements 4x to 4z one, preferably closed, revolving force attack on. Pictorially is to be understood by a closed circumferential force attack a ring key profile or a ring-like profile. The mode of operation of the tool 1 x shown in FIG. 3 corresponds to the mode of operation of the tool 1 for the internal force attack (FIG. 2).

FIG. 4 shows by way of example a cross profile for a tool 1 according to the invention, wherein FIG. 4a) shows a simplified illustration of the force application elements 4a to 4c for this tool. 4b) is a front view, orthogonal to the tool longitudinal axis 5. The force application elements 4a to 4c are displaceably mounted along the tool longitudinal axis.

It should be noted that such a functional principle can be applied to all force application profiles which can be nested inside each other. Figure 5 shows a front view and a longitudinal section of a tool according to the invention with multi-tooth profile for the force application. The force application elements 41 to 4n are in turn cascaded / nested. The smallest force application element 41 has a recess in the region of the tool longitudinal axis. This may be necessary for certain types of screw heads. Such a recess does not have to be arranged in the region of the tool longitudinal axis 5. Even with a multiplicity profile as shown here, the force application elements are pushed into each other along the longitudinal axis of the tool until the appropriate force application with the screw head for torque transmission is in communication.

Figure 6 shows a perspective view of a tool 1 with hexagon socket. The force application elements 4a - 4c along the tool longitudinal axis 5, at least partially, into one another. The tool 1 has an adapter element 7 for receiving a force attack. Figure 7 shows a sectional view of a tool 1 orthogonal to the tool longitudinal axis 5 with a first force application element 4h and a second force application element 4L Here, the first force application element 4h forms a first force attack for a slotted screw. If the first force application element 4h is displaced along the tool longitudinal axis 5, the first and the second force application element 4h / i together form a second force application with a cross profile.

Reference character list:

1 tool

 1 x tool

 2 force attack

 3 screw head

3x screw head

4a force application element

4b force application element

4c force application element

4h force application element

4i force application element

41 force application element

4m force application element

4n force application element

4x force attack element

4y force attack element

4z force application element

5 tool longitudinal axis

6a actor

 6b actor

 7 adapter element

Claims

claims Tool (1, 1x) with at least a first and a second, preferably rotationally symmetrical, preferably lockable, force application (2) for rotatable connecting elements (3, 3x), preferably a screw (3, 3x) or nut or the like, wherein at least one force application element (4a, 4b, 4c, 4h, 4i, 41, 4m, 4n, 4x, 4y, 4z) for forming at least one force application (2) translationally along a Tool longitudinal axis (5) is movable. Tool according to claim 1, characterized in that the tool (1, 1 x), in particular on the tool (1, 1 x) fastenable, adapter element (7), which is for use in or attachment to various adaptive actuator units is set up. Tool according to one of the preceding claims, characterized in that a first force application (2) of at least one first, preferably more force application elements (4a, 4b, 4c, 4h, 4i, 41, 4m, 4n, 4x, 4y, 4z) is formed and in that a second force application (2) comprises at least one of said first force application elements (4a, 4b, 4c, 4h, 4i, 41, 4m, 4n, 4x, 4y, 4z) and at least one second force application element (4a, 4b, 4c , 4h, 4i, 41, 4m, 4n, 4x, 4y, 4z), and that one of these second Force application elements (4a, 4b, 4c, 4h, 4i, 41, 4m, 4n, 4x, 4y, 4z) for forming the second force application (2) with respect to one of the first Force application element (4a, 4b, 4c, 4h, 4i, 41, 4m, 4n, 4x, 4y, 4z) along the tool longitudinal axis (5) is displaceable. Tool according to claim 3, characterized in that at least one of the force application elements (4a, 4b, 4c, 4h, 4i, 41, 4m, 4n, 4x, 4y, 4z) with at least one actuator (6a, 6b) is movable and this Force application element (4a, 4b, 4c, 4h, 4i, 41, 4m, 4n, 4x, 4y, 4z) from a first position to a second position or vice versa, along the tool longitudinal axis (5) by the respective actuator (6a, 6b) movable, and preferably lockable, is, wherein the lock preferably by the respective actuator (6a, 6b) is releasable and the respective force application element (4a, 4b, 4c, 4h, 4i, 41, 4m, 4n, 4x, 4y, 4z) in a starting position, preferably this first Position, is movable. Tool according to claim 4, characterized in that the respective actuator (6a, 6b) comprises a spring, preferably a mechanical spring, this spring is preferably selected from a group of springs which has at least the following types of spring: helical spring, torsion spring, spiral spring, Leaf spring, hydraulic spring or a gas spring or a combination of at least two of the aforementioned springs. Tool according to claim 4, characterized in that the respective actuator (6a, 6b) on a, preferably mechanical transmission, preferably a cam gear or more preferably a Gear transmission and most preferably a worm gear preferably on one of the force application elements, acts. Tool system with a tool (1, 1x) after one of preceding claims and an adaptive actuator, wherein the tool (1, 1x) to the adaptive actuator fastened, preferably removably attached, is. Tool system according to claim 7, characterized in that the adaptive actuator unit holds the respective attachable tool in a first or second rotational direction relative to the actuating unit by a rotational direction actuator lockable. Tool system according to claim 8, characterized in that the adaptive actuating unit is a manual or motorized, preferably electromotive or pneumatic, driven Device is.