WO1984001318A1

WO1984001318A1 - Tool-holder

Info

Publication number: WO1984001318A1
Application number: PCT/AT1983/000029
Authority: WO
Inventors: Josef Pichler; Peter Kohlbrat; Raimund Falker; Karoly Toempe
Original assignee: Kohlbrat & Bunz Maschvertrieb
Priority date: 1982-09-27
Filing date: 1983-09-21
Publication date: 1984-04-12
Also published as: ES274577Y; NO842053L; DK257584A; ES274577U; DK257584D0

Abstract

A control element necessary for starting or operating a mechanically driven plant (1), for example driven by a motor or a pressure medium, even in the case of a very simply embodiment, is configured as a tool-holder (4). At least one specific tool, and preferably a set of tools, intended to maintenance, cleaning or the like, of the plant (1) is permanently secured to the tool-holder (4). The control element configured as a tool-holder (4) is removably arranged against an element which is indispensable for the plant (1) and designed to facilitate direct access by the operator upon starting or operating the plant. It is hardly possible to lose the tool after its utilization since the plant recovers its operating capacity (starting of a drive motor, control by the operator) only after reinstalling the control element configured as a tool-holder (4) which has been dismounted. The tool-holder (4) is adapted to conform the control element so that it is unnecessary or hardly necessary to modify the plant (1) as compared with conventional plants in its second utilization mode as a control element.

Description

Tool carrier

The invention relates to a tool holder with at least one tool as an accessory to a power-operated device that fulfills a work function, into which the tool holder must be inserted during commissioning or use of the device, and from which it can be removed for use of the tool.

Slashes! a power-operated device is understood to mean any power-operated device, for example a simple work device operated by muscle power, in particular motor-driven or pressure-medium-operated devices. Various tools are required for the maintenance, cleaning or modification or attachment of an additional device. However, there are always difficulties to keep the tool (screwdriver, wrench, spark plug wrench in fuel-operated devices, etc.) ready so that it cannot be lost on the one hand and on the other hand is also within reach in a way that the work of the device and the Operator does not bother. The placement of one or more tools on the device entails the risk of loss, since the tool does not perform any function there. For example, this is the case with a brush cutter according to US-A-4,175.2, the handle of which can be fixed in different positions, and in which the tool required for this purpose with an approximately T-shaped tool holder in the immediate vicinity of the place of use for the adjustment of the handle is kept. The

However, the brush cutter can also be used when the tool holder is removed. there is no compelling reason to return it to the storage location after using the tool.

The placement of tools on the operator is also at risk of loss and additionally leads to unpleasant side effects, since the weight and the space taken up are perceived as annoying and possibly also lead to injuries.

The loss-proof accommodation of the key required for tensioning the chuck of hand drills, that is to say power-operated devices, is already known (US Pat. No. 2,735,908, US Pat. No. 2,666,104, GB Pat. No. 1,432,409). The loss of the drill chuck is prevented in that it has a contact in the electrical supply line via a resiliently arranged

Intermediate piece according to US-A 27 35 908 within the handle of the drill and according to US-A-26 66 104 closes within its own housing inserted into the feed line. According to GB-A-14 32 409, a pin locking the container is released by the chuck key inserted into the handle. In all three cases, the drill cannot be started without the chuck key used, which is a significant improvement. However, no optimal solution has been found, since inserting the drill chuck key only leads to operational readiness, which is given from the outset in conventional hand drills without this special training. In other words, that is to prevent loss of the tool holder

Construction of the device is complicated (additional contacts, unlocking elements, etc.) in order to restore the normal state of a drill after the chuck lock has been inserted. It is Therefore, a special adaptation of a device to the second function of the tool carrier before, the remaining components of the device, in particular the components required to fulfill the work function, remain. The arbitrarily chosen term

Work function includes only the area of actual work execution with a facility following the preparatory work to perform a job. This includes starting or switching on an engine of the facility, furthermore holding or guiding the facility during the work process, that is to say those minimum activities which are absolutely necessary even for the simplest execution of a facility to carry out the work.

The object of the invention is to provide a tool holder with tools as an accessory to a power-operated device, without which, in its second type of use, even with the simplest design of a device, the work to be performed cannot be carried out.

According to the invention, this object is achieved in that the removable tool holder is designed as an operating part to be used in the device for its commissioning or use, a component of the device which is absolutely necessary for the exclusive exercise of the work function.

According to the proposal according to the invention, tools are therefore inseparable from an operating part which is absolutely necessary even in the simplest version. Assigned part of the facility. The design of the facility itself remains essentially or completely unchanged. The training of separate recordings and additional elements after the State of the art does not apply. In addition to the actual tool holder function, the tool holder, as a second function, therefore also fulfills the active function of a necessary operating part for mere commissioning or use, replacing the usual operating part. Design changes to the device are at most necessary to be able to easily assemble and disassemble the operating part formed by the tool carrier. Even after the solution according to the invention, the loss of the tool or tools is of course practically not possible, since after a repair with the tool that occurs during work or operation, the work can only be carried out again after the operating part has returned to the power-operated one Device has been installed. The tool or tools are designed so that they do not impair the usual basic shape of the operating part, so that there is no change in the handling and usability of the device.

Which operating part now serves as a tool holder depends on the type of power-operated device. In the case of facilities operated exclusively by muscle power, this operating part will be a handle or a pedal. As examples of simple ones

Tools, for the continuous use of which tools are required, are called simple cutting or sawing tools, such as scythes, sickles, pull saws, hand saws or the like. With such tools, it is repeatedly necessary to sharpen the cutting edges or teeth. The or a handle, without which the implement cannot be used, can therefore be designed to be removable according to the invention and as a tool holder be designed for a grindstone, one or more files, etc.

In the case of motor-operated devices, the tool carrier can represent a part of a starter of the motor-driven device that can be actuated by muscle power. If the equipment is fuel-operated, such as chainsaws, lawn mowers, small boats with an external engine, etc., which very often have starter cables, the operating part that acts as a tool holder can be the starter handle required at the free end of the starter cable. In other fuel-operated devices, the tool carrier can be integrated, for example, in the kick start lever. In the case of electrically operated or electrically started devices, it can also be formed by the control handle of the electric motor. It is also conceivable to design an operating lever of a pressure medium-operated device as a tool holder.

In addition to these last-mentioned examples of tool carriers as operating parts for the commissioning of power-operated devices, the operating parts may also be absolutely necessary for the use of the power-operated devices. Here it is not just a matter of the handles of simple tools mentioned, but such operating parts which are absolutely necessary for the application are usually also present in motor-operated devices in the form of carrying, holding or guide handles, pedals etc. Is it about portable devices that have a bracket or the like. have, for example around a chainsaw, it can therefore also be provided that the tool carrier is formed by a part of the bracket.

Of course, on such devices, as long as they have more than one mandatory operating part (for example starter handle and handle), each operating part can represent a tool holder, so that a larger range of tools is available.

The removal of the tool holder from the device naturally also serves as protection against unauthorized commissioning. It happens, that devices remain in place overnight when work is interrupted, for example it is almost common in forestry to leave chainsaws in the forest. If the starter handle is removed in the evening, commissioning is only possible after reassembly. The same applies, for example, to boats that may remain unattended on the shore for a few hours.

A preferred embodiment of such a tool carrier provides, according to the invention, that the tool carrier has at least one receiving part which is approximately U-shaped in cross section, with at least one end of the receiving part having a pivot axis mounted in the two side webs, on which at least one tool is pivotally mounted. Similar to pocket knives, several tools specific to the device, i.e. a tool set, can be accommodated in the U-shaped receiving part according to this embodiment. A doubling of the tools to be accommodated can be achieved if the tool carrier has two receiving parts which are approximately U-shaped in cross section, the bottoms of which are formed by a common central web.

The tools arranged in the tool holder are, for example, basic tools, such as several sizes of simple screwdrivers, Phillips screwdrivers, Allen keys and device-specific tools. For example, for fuel-operated devices, this can be an electrode distance measuring gauge, a wire brush, in the case of a chain saw, a file for sharpening the chain teeth, etc., a plier-like cutting tool, a stripping device, etc. for electrically operated devices. Finally, in a preferred embodiment it is provided that at least one end section of the tool carrier is shaped as a socket wrench.

For easier unfolding of tools that are in the rest position if they are also locked, it proves to be advantageous if a two-armed lever is mounted on the pivot axis, the arm projecting into the receiving part rests on each tool and the arm protruding from the receiving part as a pivot lever for the folded tool or tools. The inner lever arm presses the tools at least so far from the U-shaped receiving part that they can be gripped comfortably, the tools not required being folded in again. The connection between each fastening section of the tool carrier as an operating part and the associated part of the functional element of the power-operated device can be designed in a preferred embodiment as a bayonet lock, which is optionally acted upon by an elastic element in order to avoid the unwanted rotation.

Furthermore, the use of cotter-pin pins is conceivable as well as the formation of spring-loaded sliding parts that snap into the assigned part of the functional element. The type of connection will also be adapted to the circumstances of the power-operated device.

The tool holder, which acts as an operating part, can be made of any suitable material. For example, any desired shape and low weight can be achieved by injection molding particularly fiber-reinforced, high-strength thermoplastics, such as glass or carbon fiber reinforced polyamides.

The invention will now be described in more detail in several exemplary embodiments with reference to the figures of the accompanying drawings, without being limited to these.

It shows: Fig. 1 is a schematic oblique view of a chainsaw as an example of a fuel-operated device, FIG. 2 is a side view of a tool holder in the form of a starter handle for a fuel-operated device, FIG. 3 and 4 sections along lines III-III and IV-IV of Fig. 2, wherein in FIG. 3 the tools are folded in and in FIG. 4 are expanded, FIG. 5 is an end view of the tool carrier according to FIG. 2 without tools, FIGS. 6 and 7 are sections along lines VI-VI and VII-VII of FIG. 2 and FIG 3, FIG. 8 shows a longitudinal section through the part of the functional element of the device assigned to the tool holder of FIGS. 2-7, FIGS. 9 and 10 show a side view and plan view of a tool holder designed as a switch handle of an electric motor, FIGS. 11 to 14 show two different embodiments of tool carriers as Parts of carrying brackets or guide handles of power-operated devices, with FIGS. 12 and 13 showing end views of the embodiment according to FIG. 11, and FIG. 15 an embodiment of a tool carrier in the form of a handle lever, for example for pressure-medium-operated devices.

In Fig. 1, a chainsaw is shown as a general explanation as an example of an inventive device 1. This device has three functional elements 2, 3, the functional element 2 being formed by the starter of the fuel-operated chainsaw motor and the functional elements 3 by carrying or holding handles, for example by a carrying handle 6. For actuating the functional element 2, that is to say the starter attached to a pull-out starter cord 36 (Fig. 8) a starter handle 5. According to the shed according to the invention, at least one part of these functional elements 2, 3 is now designed as a tool carrier 4, the tool carrier 4 being removable from the functional element 2, 3 and carrying tools that cannot be removed under normal conditions. If one of these device-specific tools is required, the tool carrier 4 is removed. Since the operating part for the functional element 2, 3 is missing when the tool holder 4 of the device 1 is removed, it cannot be put into operation or used without the installation of the tool holder 4. Since at least one functional test is generally carried out after a repair or maintenance, the tool is therefore stowed almost impossible to lose.

2-8, the design of the tool carrier 4 as a starter handle 5 of a chain saw to be started by means of a cable is now described. The tool carrier 4 is therefore approximately T-shaped and has two receiving parts 10 of approximately U-shaped cross section, which are connected by a common central web 15 and form the crosspiece of the T-shape. The two ends of each receiving part 10 are denoted by 11 and 12, an axis 14 being arranged in the two side webs 13 of the receiving part 10 in the end 11. At least one tool 20, 21, 22 is pivotally mounted on each axis 14. In the illustrated embodiment the axis 14 is divided into two partial axes 14 ', the second end of each partial axis 14' engaging in a tab 33 which is parallel to the side web 13 and is only provided in the region of the end 11 of the receiving part 10. At the other end 12 of the receiving part, a resilient locking element 29 is provided for each tool, which fixes the tool in the folded position, wherein it engages in a recess 30 of the tool 20, 21, 22. For easier release of the tool, 13 depressions 34 are formed on the inside of the side web. For the fixation in the unfolded position on the work witnesses 20, 21, which are two different sizes of screwdrivers, a further recess 32 is arranged, into which a cam 31 engages, which protrudes from the tab 33. The two receiving parts 10 are adjoined on both sides by an end section 27 which is designed as a socket wrench 24, that is to say as a further tool.

The center piece 46 of the T-shape of the tool carrier 4 forms one

Fastening section 19 for the legible connection of the tool carrier 4 to a part 35 of the functional element 2, as is shown, for example, in FIG. 8 as a receiving piece of the starter cable 36. The fastening section 19 is provided with two retaining projections 28 of a Bajo nice closure, which have a curved locking surface. Retaining protrusions 28 with the same curvature are formed on the insertion section of part 35 of the functional element 2. In order to avoid the independent release of the bayonet catch 25, it is acted upon by an elastic element 26, which is inserted into the center piece 46 of the tool carrier at the edge of the receiving opening for the part 35 and is formed, for example, by a foam or foam rubber part. If a through hole is provided in the middle piece 46 as a receiving opening for the part 35, the end section into which the elastic element 26 is inserted can also form a socket wrench. The free end section 27 of the center piece 46 is also shaped as a socket wrench 24, and in the exemplary embodiment shown it is suitable as a spark plug wrench for loosening or fastening a spark plug 44. At least one of the screwdrivers (tools 20, 21) shown can at the same time form an electrode spacing gauge by its rotating section having the thickness corresponding to the usual electrode spacing. As a tool 22, a hexagon key is arranged, which by its outer edges locked without recess on the locking element 29. In contrast to that of the screwdriver, its swivel angle is limited to approximately 90 ° by a stop on the larger socket wrench 24, while the smaller socket wrench 24 on the other end section 27 serves as a 180 ° stop. In the still free areas of the receiving parts 10, further tools can be inserted, which are not shown, particularly for reasons of clarity. For example, a wire brush can be provided in particular as a supplement to fuel-operated devices, and a file for sharpening the chain teeth, etc., as a supplement to the chainsaw shown, since three to four tools can be accommodated comfortably per receiving part 10.

9 and 10 show a further exemplary embodiment in which the tool carrier 4 is formed by a switch handle 8 of an electrically operated device, in which a switch is provided as the functional element 7 from which the operating part, that is to say the tool carrier 4, can be removed. The exemplary embodiment is somewhat simplified, so that the tool carrier 4 is provided with a single U-shaped receiving part 10.

The end section 27 of the tool carrier 4 is also designed as a key 24 in this embodiment. At the opposite end 11 of the receiving part 10, three tools 20-22, for example two screwdrivers 20, 21 and a hexagon key 22 are rotatably mounted on the axis 14 arranged in the side webs 13. The tools 20-22 are arranged in the rest position in the cross-sectionally U-shaped receiving part 10, from which they can be folded out. To make it easier to unfold the tools 20-22, a two-armed lever 16 is likewise rotatably mounted on the axis inserted in the side socket 13, the inner arm 17 of which projects into the U-shaped receiving part 10 and bears against the folded tools 20-22. The outer arm 18 of the lever 16 protrudes slightly from the end 11 and can therefore be operated. The range of motion of the two-armed lever 16 is chosen so that the actuation of its outer arm 18 lifts the tools 20-22 so far out of the receiving part 10 that the ends thereof can be gripped by hand. The desired tool can be gripped and completely unfolded, all others, however, are pushed back into the receiving part 10.

In this embodiment, the middle region of the central web 15, which is provided with a passage opening 37 for a switch shaft 40, serves as the fastening section 19 of the tool carrier 4. When the tool holder is attached, it can be secured, for example, by a split pin, by a spring plate 45 in another conventional manner. The passage opening 37 is designed as a hexagonal opening so that it can also form a socket wrench for smaller screwdriver nuts. Here, too, the tool combination can be changed or supplemented, for example the arrangement of a plier-like cutting tool is favorable for electrically operated devices.

11 - 14, two versions of the tool holder 4 are shown, in which it is designed in the form of a removable part of a bracket 6 or other holding or guide handle as a functional element 3 of a power-operated device 1. A generally tubular handle or support bracket 6 is interrupted according to FIGS. 11-13 by the tool carrier 4 into two sections, on each of which a retaining nut 38 is held captively. The tool carrier 4 accordingly has two fastening cuts 19, which simultaneously form end sections 27, on which socket wrenches 24 are formed in different sizes (FIGS. 12, 13). An axis 14 is again arranged in the two side webs 13 of the approximately U-shaped receiving part 10, about which the tools 20, 21, 22, 23 can be pivoted. In addition to the two screwdrivers and the hexagon key, a file is provided as a further tool 22 which is used to sharpen the chain teeth of a chainsaw. If the tool holder 4 is an integral part of a lawn mower handle, the file of the lawn mower, for example, can be sharpened using the file. 14 shows a further embodiment of the tool carrier 4 as a connecting component of a holding bracket 6 or handle of a device 1. Here, too, the receiving part 10 is approximately U-shaped in cross section and an axis 14 in its side webs 13 at the end 11 is pivotable by 180 ° Tools 20 - 23 used. As a fastening element 19 of the tool carrier 4 sets at the end 11 of the tool carrier 4 a rigid, approximately U-shaped fastening piece 41 continues, which is inserted into the opening of the bracket 6 formed by a tube and is fixed there, for example, by a pin (not shown) with a cotter pin. At the other end 12 of the receiving part 10 in the second fastening section 19 a substantially similarly designed fastening piece 42 is slidably arranged, which has an actuation opening 43. The displaceable fastening piece 42 is supported on an elastic element 26 formed in particular by a helical spring. A plate is used as the foremost end section 27 of the tool carrier 10, that is to say as the end part of the displaceable fastening section 42, which contains an opening which forms a socket wrench 24. The displaceable fastening section 42 is pushed back for removal and insertion of the tool carrier 10. Here, too, a socket pin can be pushed vertically through the connected parts 42 and 6 for fixing.

Finally, FIG. 15 shows a tool carrier 4, which forms an operating part in the form of a handle lever and can be provided, for example, for controlling a pressure medium-operated device 3. The tool carrier 4 therefore has only one fastening section 19, which has a fastening bolt 39 for connection, for example a fastening bolt 39, which may also serve as a pivot axis for the handle lever and is secured by a split pin, and on the functional element 9, for example a control valve of the device, is scheduled. The fastening section 19, which at the same time forms the end section 27 of the tool carrier 4, is in turn shaped into a socket wrench 24. At the upper end 11 of the U-shaped receiving part 10 of the tool carrier 4, the axis 14 with tools 20-23 is arranged in its side webs 13, which are only indicated by dashed lines and can be opened by 180 °.

As already mentioned, the type of the power-operated device 1 is not fixed, since each of its operating parts, which is absolutely necessary for the commissioning or use, can act as a tool holder.

Claims

Patent claims

1. Tool holder with at least one tool as an accessory to a power-operated device fulfilling a work function, into which the tool holder must be inserted during start-up or application of the device, and from which it can be removed for use of the tool, characterized in that that the removable tool holder (4) is designed as an operating part to be used in the device for its commissioning or application, an essential part of the device (1) for the sole exercise of the work function.

2. Tool carrier according to claim 1, characterized in that it is designed as a part of a starting element (2) of a motor-operated device (1) which can be actuated by muscle force.

3. Tool carrier according to claim 2, characterized in that it is designed as a starter handle (5) attached to the free end of a starter cord of a fuel-operated device (1), for example a chainsaw, a lawn mower or the like.

4. Tool carrier according to claim 2, characterized in that it forms out as a kick start lever of a fuel-operated device (1).

5. Tool holder according to claim 2, characterized in that it is designed as a switch handle (8) of an electric motor of the device (1).

6. Tool carrier according to claim 1, characterized in that it is designed as a handle (3) of the power-operated device (1).

7. Tool carrier according to claim 6, characterized in that it is designed as part of a support bracket (6) of a portable power-operated device (1).

8. Tool carrier according to one of claims 1 to 7, characterized in that it has at least one approximately U-shaped in cross section

Has receiving part (10), with at least one end (11, 12) of the receiving part (10) is arranged in the two side webs (13) ge pivot axis (14) is arranged on which at least one tool (20 - 23) is pivotally mounted.

9. Tool carrier according to claim 8, characterized in that it has two approximately U-shaped receiving parts (10) in cross section, the bottoms of which are formed by a common central web (15).

10. Tool carrier according to claim 8 or 9, characterized in that on the pivot axis (14) a two-armed lever (16) is mounted, the arm (17) projecting into the receiving part (10) abuts each tool (20 - 23), and whose arm (18) protruding from the receiving part (10) serves as a pivot lever for the folded tool (s) (20 - 23).

11. Tool holder according to one of claims 1 to 10, characterized in that between each fastening step (19) of the tool holder (4) and the associated part (35) of the mandatory component of the power-operated device (1) a bayonet lock (25) is formed is.

12. Tool holder according to claim 11, characterized in that the bayonet lock (25) of an elastic element (26) is opened.

13. Tool holder according to one of claims 1 to 12, characterized in that at least one end portion (27) of the tool holder (4) is shaped as a socket wrench (24).