• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An insulation system (2) is provided for a tool (1), a tool (1) and a method of mounting an insulation system (2) for a tool (1) on the tool (1). The isolation system (2) comprises a first element (21) for electrically insulating a driven unit (15) of the tool (1) against a releasable receiving tool element of the tool (1), which serves for machining a workpiece, and a second element ( 22) for electrical insulation of the driven unit (15) outwards.Fig. 1
    公开号:SE1451171A1
    申请号:SE1451171
    申请日:2014-10-03
    公开日:2015-04-05
    发明作者:Joerg Schneider；Achim Kugler
    申请人:Bosch Gmbh Robert；
    IPC主号:
    专利说明:

    Advantageous further designs of the insulation system are specified in the dependent claims. The isolation system for a tool offers a closed overall concept, which ensures that both the tool and its operator are protected against electrical voltages which occur on a workpiece intended for the tool for machining. An intrusion of electrical voltages from the workpiece to be machined into the tool is prevented. Thereby, a solution is provided throughout in itself for, for example, a screw system for category A screwing, which allows to work under the conditions of "work under tension". The insulation system is easy to complete and can thus be used with any series screw connection. This is also advantageous for the spare parts holding of a user of the tool. The insulation system offers a simple and easy-to-handle solution for the above-mentioned task. The insulation system contributes to a high process safety of the tool.
    The task is solved in addition by a tool according to claim 7.
    Advantageous additional designs of the tool are set out in the dependent claims.
    The tool achieves the same advantages as those mentioned above with respect to the insulation system.
    The object is solved in addition by a method for mounting an insulation system on a tool according to claim 9.
    Advantageous further embodiments of the method are set out in the dependent claims.
    The process achieves the same advantages as they are mentioned with respect to the insulation system.
    Further possible implementations of the invention also include not explicitly mentioned combinations of the above-mentioned criteria or embodiments described in the following with respect to the exemplary embodiment.
    In doing so, those skilled in the art will also add individual aspects such as improvements or additions to the present basic form of the invention.
    The invention is described in more detail below with reference to the accompanying drawing and by means of an exemplary embodiment. It shows: Fig. 1 a side view of a tool with an insulation system according to an exemplary embodiment; and Fig. 2 is a sectional view of an insulation system of the tool according to the exemplary embodiment.
    In the figures, identical or function-like elements, unless otherwise stated, are provided with the same reference numerals.
    Fig. 1 shows a tool 1 with an insulation system 2. The tool 1 can be a screw tool, drilling tool, a riveting tool, a punching tool, a bolt gun, etc. The tool 1 in Fig. 1 is a hand-held tool. However, tool 1 is not limited to this. Tool 1 can also be a stationary tool or a stand-alone tool.
    In Fig. 1, the tool 1 has a handle 11, an in / out coupler 12, a battery compartment 13, a housing 14 and a driven unit 15. The insulation system 2 has a first element 21, a second element 22, a receiving element 23 and a fastening unit 24.
    A battery, such as a rechargeable battery or a non-rechargeable battery, can be accommodated in the battery compartment 13. As a result, the tool 1 is a cordless tool. The housing 14 is made of a material, for example plastic, etc., which has an electrically insulating effect.
    Thereby, the tool 1 in the area of the housing 14 has a surface of an electrically insulating material. On the driven unit 15, however, the tool 1 has a metallic housing, in particular a steel housing. Thus, the driven unit 15 has an electrically conductive housing. The driven unit 15 is configured to receive a tool element (not shown), with which the tool 1 can machine a workpiece. For example, the driven unit 15 is a quick-release chuck for receiving a screw piece, drill, etc.
    The first element 21 is an electrically insulated and electrically insulating extension, which can be accommodated by the driven unit 15. The first element 21 can hook into the driven unit 15, as described below. The second element 22 is a housing of an electrically insulating material, such as for example plastic, etc. For example, the second element 22 is a housing consisting of some. The second element 22 can receive, in particular enclose, the driven unit 15 and the first element 21, as shown in Fig. 1. In addition, the second element 22 receives the receiving element 23. In this case, the second element 22 engages in the receiving element 23 or abuts against in such a way that the receiving element 23 partially protrudes from the second element 22, as shown in Fig. 1.
    At its end facing the tool 1, the second element 22 is slotted at the fastening unit 24 and provided with two fastening elements 24A, 24B. With the fastening unit 24, the second element 22 can be fastened to the housing 14 of the tool 1 with the two fastening elements 24A, 24B. The fastening elements 24A, 24B are arranged in two fastening elements 24A, 24B arranged in the radial direction of the driven unit 15, as shown in Fig. 1. The fastening elements 24A, 24B are preferably recessed placed fastening elements, such as for instance clamping screws, etc., which clamp the other the element 22 and thus the insulation system 2 at the housing 14 of the tool 1.
    Fig. 2 shows the construction of the insulation system 2 more precisely. Accordingly, a drive flange 21A is provided for the first element 21. The drive flange 21A is arranged in the driven unit 15 of the tool 1, in particular locked on the driven unit 15. The first element 21 is arranged over a form-fitting tooth 21B on the drive flange 21A. The axial securing of the first element 21 takes place through a locking pin 21C. In addition, the first element 21 is arranged at its other end over a form-fitting tooth 21D at a power take-off flange 23A, which is connected to a quick-release chuck 23B to the receiving element 23. The axial securing of the first element 21 also takes place here by a locking pin 21E.
    Through the first element 21, the electrical separation of a screw point on a workpiece from the tool 1 takes place.
    To reduce the radial play of the insulating output shaft from the drive flange 21A, the first member 21 and the power take-off flange 23A, it is mounted in the front region of the second member 22 with a bearing 22A. The storage takes place with the form-fitting teeth 21B, 21D. The second element 22 as an insulating housing has a flange ring 22B, which limits the grip area for the user of the tool 1. The flange ring 22B projects collar-like outwards as a ring from the second element 22. The user of the tool 1 senses through the flange ring 22B what was dangerous, i.e. the voltage conducting area in the insulation system 2 begins.
    Accordingly, the tool is 1 in fig. 1 and Fig. 2 shows a cordless hand screwdriver, which, with the exception of the clamping flange at the driven unit, the driven unit 15, and the output shaft itself has a surface of plastic. The cordless design of the tool 1 is also advantageous in order to avoid a co-flowing potential via a cord.
    The solution described above consists in that in a method for mounting the insulation system 2 on a tool 1, the procedure is as follows. In the driven unit 15, in particular its quick-change chuck, an insulated and insulating extension in the form of the element 21 is locked by means of the drive flange 21A. Thereafter, the insulating housing of the insulating system 2, i.e. the second element 22, is slid over the insulating extension of the housing of the tool 1. The fixing in the device shown in Fig. 1 and Fig. 2 takes place with the fastening unit 24 and by countersunk radial clamping screws. 24A, 24B. The insulation system 2 can subsequently be mounted on a traditional series screw connection. It simplifies the holding of spare parts for the user of the tool 1.
    In the quick-change chuck 23B of the receiving element 23, a marketed hexagon wrench can be attached as a tool element (not shown). In this way, the receiving element 23 is designed for releasable receiving or mounting of the tool element (not shown).
    In summary, the desired extra electrical insulation of the tool 1 against electrical voltages on a workpiece intended for machining 1 can be realized by the insulation system 2.
    According to a second embodiment, there is no bearing of the output shaft from the drive flange 21A, the first element 21 and the power take-off flange 23A through the bearing 22A, in order to reduce the radial play of the insulating output shaft.
    Incidentally, even in the present exemplary embodiment, the tool 1 and its insulation system 2 are constructed in the same way as with respect to the first exemplary embodiment.
    According to a third embodiment, there is no flange ring 22B, which limits the grip area for the user of the tool 1. This simplifies the manufacture of the second element 22. The flange ring 22B is not absolutely necessary, when a user of the tool 1, for example, does not have to or will not grasp the second element 22 on the tool 1 when machining a voltage conducting workpiece.
    Incidentally, even in the present exemplary embodiment, the tool 1 and its insulation system 2 are constructed in the same way as with respect to the first exemplary embodiment.
    According to a fourth embodiment, the insulation system 2 is designed in such a way that the receiving element 23 and the first element 21 cannot be dismantled without disassembly of the second element 22 from the tool 1. Such a construction prevents the simple, for example toolless, change of the insulated output gear by an operator of the tool 1. This will increase the security of the tool 1 and its operator.
    Incidentally, even in the present exemplary embodiment, the tool 1 and its insulation system 2 are constructed in the same way as with respect to the first exemplary embodiment.
    All previously described designs of the tool 1 and its insulation system 2 can be used separately or in all possible combinations. In particular, all the criteria and / or functions regarding the embodiments described above can be combined in any way. In addition, the following modifications in particular are conceivable.
    The parts illustrated in the figures are schematically represented and may in the exact design deviate from the shapes shown in the figures, as long as their functions described above are guaranteed.
    One or both fastening elements 24A, 24B can, as required, also be designed in a different way than by a screw. For both fastening elements 24A, 24B are also fasteners in the form of welding, gluing or snap connection, etc. possible.
    权利要求:
    Claims (10)
    [1]
    Insulation system (2) for a tool (1), with a first element (21) for electrically insulating a driven unit (15) of the tool (1) against a releasably receiving tool element of the tool (1), which serves for machining of a workpiece, and a second element (22) for electrically insulating the driven unit (15) outwards.
    [2]
    Insulation system (2) for a tool (1), the second element (22) therefor serving to receive the driven unit (15), the first element (21) and a receiving element (23), which serves for releasable receiving of the tool element, and / or wherein the second element (22) encloses the driven unit (15) and the first element (21) and the receiving element (23) project from the second element (22).
    [3]
    Insulation system (2) according to claim 1 or 2, wherein the second element (22) has a bearing (22A) for reducing the radial play of the insulating output shaft from the drive flange (21A), the first element (21) and the receiving element (23) , and / or wherein the second element (22) has an annular flange (22B) for limiting a grip area for the user of the tool (1).
    [4]
    An insulation system (2) according to any one of the preceding claims, wherein the second element (22) is designed in such a way that the receiving element (23) can only be disassembled with disassembly of the second element (22) from the tool (1).
    [5]
    An insulation system (2) according to any one of the preceding claims, wherein the second element (22) encloses one end of the tool (1) and / or is a plastic housing.
    [6]
    Insulation system (2) according to any one of the preceding claims, wherein the first element (21) is an electrically insulating and insulated element, which with a form-fitting tooth (21D) sits in a drive flange (21A) for the first element (21), wherein the drive flange (21A) is designed for arrangement in a quick-change chuck of the tool (1).
    [7]
    A tool (1), having a driven unit (15) for driving a releasable receiving tool element, which serves for machining a workpiece, a first element (21) for electrically insulating the driven unit (15) against a receiving element ( 23) for releasably receiving the tool element, and a second element (22) for electrically insulating the driven unit (15) outwards.
    [8]
    A tool (1) according to claim (7), wherein the tool (1) is a cordless tool (1) and / or a screw / drilling tool.
    [9]
    Method for mounting an insulation system (2) for a tool (1) on a tool (1), with the steps of mounting a first element (21) on a driven unit (15) to the tool (1), so that it the first element (21) is arranged for electrically insulating the driven unit (15) against a releasably mountable tool element of the tool (1), which serves for machining a workpiece, and mounting a second element (22), so that the second the element (22) serves for electrical insulation of the driven unit (15) outwards.
    [10]
    A method according to claim 9, wherein the second element (22) is an integral plastic housing, which is slid over the receiving element, the first element (21) and the driven unit (15), and / or the second element (22). fastened with at least one radial fastening element (24A, 24B) on the housing (14) to the tool (1).
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102013016328|2013-10-04|
    DE201410204380|DE102014204380A1|2013-10-04|2014-03-11|Isolation system for tool, tool, and method for mounting the insulation system to the tool|
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