Abstract
A power tool having at least one front handle and a tool, wherein the tool can be cooled with a cooling liquid during the operation of the power tool. The power tool has a regulating unit for providing the cooling liquid, wherein the regulating unit has a valve for setting a quantity of cooling liquid and is integrated on the front handle.
Claims
1-10. (canceled)
11. A power tool comprising: at least one front handle; a tool, the tool coolable with a cooling liquid during the operation of the power tool; and a regulator for providing the cooling liquid, wherein the regulator has a valve for setting a quantity of cooling liquid, the regulator being integrated on the front handle.
12. the front handle is in the form of a circumferential handle.
13. The power tool as recited in claim 11 wherein the front handle includes an opening for receiving the regulator.
14. The power tool as recited in claim 13 wherein the valve includes a valve body having an upper linear guide and a lower linear guide for guiding the valve body in the opening.
15. The power tool as recited in claim 14 wherein the upper linear guide or the lower linear guide includes a tongue-and-groove connection.
16. The power tool as recited in claim 14 wherein the guides each include at least one groove, the grooves interacting with tongues on the front handle of the power tool.
17. The power tool as recited in claim 11 wherein the regulator is held in the front handle by a fastener.
18. The power tool as recited in claim 11 wherein the regulator includes a connection for a hose to provide the cooling liquid.
19. The power tool as recited in claim 18 wherein the connection is integrated in the front handle.
20. The power tool as recited in claim 11 further comprising a rear handle.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Identical and similar components are denoted by the same reference signs in the figures. In the figures:
[0021] FIG. 1 shows a view of a preferred refinement of the valve or of the regulating unit and the arrangement thereof on the power tool
[0022] FIG. 2 shows a view of a preferred refinement of the valve of the regulating unit and the arrangement thereof on the power tool
[0023] FIG. 3 shows a sectional illustration of a preferred refinement of the valve of the regulating unit
[0024] FIG. 4 shows a detailed view of a preferred refinement of the front handle and of the opening for receiving the regulating unit
[0025] FIG. 5 shows various views of preferred embodiments of the cooling liquid regulating unit of the power tool
[0026] FIG. 6 shows various views of preferred embodiments of the front handle of the power tool
DETAILED DESCRIPTION
[0027] FIG. 1 shows a view of a preferred refinement of the valve 6 and the arrangement thereof on the power tool 1. FIG. 1 looks from a rear region of the power tool 1 in the direction of the tool 5 of the power tool 1. Between the front handle 2 of the power tool 1 and the protective hood of the tool 5 of the power tool there is arranged a hose 10 with which cooling liquid 4 can be conducted from the valve 6 or from a regulating unit 12 to the tool 5. The power tool 1 can be a cut-off grinder which is capable in particular of introducing cuts into a concrete substrate. The tool 5 of the cut-off grinder 1 is in this case in particular a cutting disk which can be covered in relation to the user of the power tool 1 by a protective hood (without a reference sign). The power tool 1 preferably comprises a front handle 2 and a rear handle 11, wherein the valve 6 and the regulating unit 12 are in particular integrated on the front handle 2 of the cut-off grinder 1. The regulating unit 12 can furthermore have a first connection 3 for the cooling liquid 4 by which the cooling liquid 4 can pass into the regulating unit 12 (see, e.g, FIG. 5).
[0028] For this purpose, the front handle 2 can comprise an opening 7 which is illustrated in FIGS. 2 and 4. FIG. 2 shows a view of a preferred refinement of the valve 6 or of the regulating unit 12 and the arrangement thereof on the power tool 1. FIG. 2 looks from the protective hood of the cutting disk 5 in the direction of the rear handle 11 of the power tool 1. A regulating unit 12 for the quantity of cooling liquid 4, with which the cutting disk 5 is cooled, can be introduced into the opening 7 of the front handle 2. This regulating unit 12 comprises in particular a first connection 3 for the cooling liquid 4, and the valve 6. The regulating unit 12 is illustrated in particular also in FIG. 5. The first connection 3, through which cooling liquid 4, in particular cooling water, can enter the regulating unit 12, is illustrated in FIG. 3 on the left half of the regulating unit 12.
[0029] FIG. 3 shows a sectional illustration of a preferred refinement of the valve 6 or of the regulating unit 12 and the arrangement thereof on the power tool 1. The front handle 2 and the regulating unit 12 for the cooling liquid 4 are illustrated in the foreground of FIG. 3, while the rear handle 11 of the power tool 1 is illustrated in the background of FIG. 3. It is provided in the context of the invention that the power tool 1 comprises a regulating unit 12 for the cooling liquid 4, wherein the valve 6 is part of the regulating unit 12. Furthermore, the regulating unit 12 comprises a first connection 3 for the cooling liquid 4. In addition to said first connection 3 for the cooling liquid 4, the regulating unit 12 also comprises fastening means 8 with which the regulating unit can be fastened to the power tool 1. In other words, the fastening means 8 can be part of the regulating unit 12. The fastening means 8 are preferably configured to fasten the regulating unit 12 or the valve 6 to the power tool 1 or to the front handle 2.
[0030] So that the regulating unit 12 remains in the front handle 2 of the cut-off grinder 1, the regulating unit 12 or the valve 6 can be fastened to the power tool 1 with screws and/or a snap-action connection as fastening means 8. The fastening means 8 can in particular comprises a snap hook connection with which the regulating unit 12 or the valve 6 can be secured on the power tool 1. For the purposes of the invention, it is particularly preferred that a snap hook connection is used as the fastening means 8 in order to fasten the valve 6 or the regulating unit 12 in the front handle 2 or in the opening 7 thereof.
[0031] FIG. 3 furthermore illustrates a connection 9 for the hose 10 (see, e.g, FIG. 1), wherein the cooling liquid 4 can be conducted with the hose 10 in the direction of the cutting disk 5. The connection 9 is preferably part of the regulating unit 12; for the purposes of the invention, it is preferably also referred to as second connection or hose connection which lies downstream of the regulating unit 12 in the direction of flow of the cooling liquid 4. For the purposes of the invention, it is preferred that the connection 9 for the hose 10 is integrated in the front handle 2 of the power tool 1. The hose connection 9 can preferably also be referred to as an intersection. The second connection 9, through which the cooling liquid 4 leaves the regulating unit 12, is illustrated in FIG. 3 on the right side of the regulating unit 12. Furthermore, FIG. 3 illustrates the direction of flow S of the cooling liquid 4 by means of the arrow in the lower half of the image.
[0032] FIG. 4 shows a detailed view of a preferred refinement of the front handle 2 and of the opening 7 for receiving the regulating unit 12 of the power tool 1. FIG. 4 in particular illustrates a lower linear guide 15 on the front handle 2 of the power tool 1, which guide can have tongues, for example on both sides. Said tongues can interact with grooves which are parts of a counterpart of the lower linear guide 15 on a valve body 13 of the valve 6 of the regulating unit 12. Said grooves of the lower linear guide 15 of the valve body 13 are preferably present on both sides of the valve body and are illustrated in FIG. 5.
[0033] Furthermore, FIG. 4 shows an upper linear guide 14 which is arranged on the front handle 2 and has a respective groove on both sides. Said grooves can interact with tongues which are parts of a counterpart of the upper linear guide 14 on the valve body 13 of the valve 6 of the regulating unit 12. Said tongues of the upper linear guide 14 of the valve body 13 are preferably present on both sides of the valve body and are illustrated in FIG. 5.
[0034] FIG. 5 shows various views of preferred embodiments of the cooling liquid regulating unit 12 of the power tool 1. In particular, the valve 6, the first connection 3, the second connection 9 and the hose 10, and the fastening means 8 can be seen.
[0035] FIG. 6 shows various views of preferred embodiments of the front handle 2 of the power tool 1.
LIST OF REFERENCE SIGNS
[0036] 1 Power tool [0037] 2 Front handle [0038] 3 Feed for the cooling liquid for cooling the tool of the power tool, first connection [0039] 4 Cooling liquid [0040] 5 Tool of the power tool [0041] 6 Valve [0042] 7 Opening for receiving the valve [0043] 8 Fastening means [0044] 9 Connection, second connection [0045] 10 Hose [0046] 11 Rear handle [0047] 12 Regulating unit [0048] 13 Valve body [0049] 14 Upper linear guide [0050] 15 Lower linear guide [0051] S Direction of flow of the cooling liquid
