Abstract
A portable machine tool, particularly a hammer drill and/or chisel hammer, has a length, a width, a height and a mass. The portable machine tool has at least one energy storage unit that has a charge carrier capacity and a quick-change tool holder for quick-change tools with a shaft diameter of less than 12 mm. A product formed from the length, the width, the height, the mass and the inverse of the charge carrier capacity is less than 1301 cm.sup.3 kg A h.sup.1.
Claims
1. A portable machine tool, comprising: a length, a width, a height and a mass; at least one energy storage unit which has a charge carrier capacity; and a quick-change tool holder configured to receive quick-change tools with a shaft diameter of less than 12 mm, wherein a product formed of the length, the width, the height, the mass, and the inverse of the charge carrier capacity is less than 1301 cm.sup.3 kg A h.sup.1.
2. The portable machine tool as claimed in claim 1, wherein the product is less than 1001 cm.sup.3 kg A h.sup.1.
3. The portable machine tool as claimed in claim 2, wherein the product is less than 751 cm.sup.3 kg A h.sup.1.
4. A portable machine tool, comprising: a length, a width, a height and a mass; at least one energy storage unit which has a charge carrier capacity; and a quick-change tool holder configured to receive quick-change tools with a shaft diameter of less than 20 mm, wherein a product of the length, the width, the height, the mass, and the inverse of the charge carrier capacity is less than 20,001 cm.sup.3 kg A h.sup.1.
5. The portable machine tool as claimed in claim 4, wherein the product is less than 15,001 cm.sup.3 kg A h.sup.1.
6. The portable machine tool as claimed in claim 5, wherein the product is less than 10,001 cm.sup.3 kg A h.sup.1.
7. A portable machine tool, comprising: a length, a width, a height, and a mass; at least one energy storage unit which has a charge carrier capacity; a quick-change tool holder configured to receive quick-change tools with a shaft diameter greater than 26 mm, wherein a product of the length, the width, the height, the mass, and the inverse of the charge carrier capacity is less than 100,001 cm.sup.3 kg A h.sup.1.
8. The portable machine tool as claimed in claim 7, wherein the product is less than 80,001 cm.sup.3 kg A h.sup.1.
9. The portable machine tool as claimed in claim 8, wherein the product is less than 70,001 cm.sup.3 kg A h.sup.1.
10. A method for manufacturing a portable machine tool which has a length, a width, a height, a mass, at least one energy storage unit with a charge carrier capacity, and a quick-change tool holder configured to receive quick-change tools, the method comprising: determining a specific value based on a shaft diameter of the quick-change tools which the quick-change tool holder is configured to receive; configuring the length, the width, the height, the mass, and the inverse of the charge carrier capacity such that a product of the length, the width, the height, the mass, and the inverse of the charge carrier capacity is less than the specific value.
11. The portable machine tool of claim 1, wherein the portable machine tool is at least one of a hammer drill and chisel hammer.
12. The portable machine tool of claim 4, wherein the portable machine tool is at least one of a hammer drill and a chisel hammer.
13. The portable machine tool of claim 7, wherein the portable machine tool is at least one of a hammer drill and a chisel hammer.
14. The method of claim 10, wherein the portable machine tool is at least one of a hammer drill and a chisel hammer.
Description
DRAWING
[0029] Further advantages can be gathered from the following drawing description. Three exemplary embodiments of the invention are illustrated in the drawing. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them to form practical further combinations.
[0030] In the drawing:
[0031] FIG. 1 shows a first portable machine tool in a schematic illustration,
[0032] FIG. 2 shows a second portable machine tool in a schematic illustration,
[0033] FIG. 3 shows a third portable machine tool in a schematic illustration, and
[0034] FIG. 4 shows an exemplary flowchart for a method for manufacturing a portable machine tool.
DESCRIPTION OF THE EXEMPLARY EMBODIMENTS
[0035] FIG. 1 shows a first portable machine tool formed as a battery-powered hand drill. The first portable machine tool has a quick-change tool holder 18a. In the present case, the quick-change tool holder 18a is provided to hold SDS-plus quick-change tools with a shaft diameter of 10 mm. In addition, the first portable machine tool has a length (L.sub.a) 10a, a width (B.sub.a) 12a, a height (H.sub.a) 14a and a mass (m.sub.a). In the present case, the length (L.sub.a) 10a is 25 cm, the width (B.sub.a) 12a is 7 cm, the height (H.sub.a) 14a is 20 cm and the mass (m.sub.a) is 1.8 kg. Furthermore, the first portable machine tool has an energy storage unit 16a formed as a battery pack with a charge carrier capacity (Q.sub.a). In the present case, the charge carrier capacity (Q.sub.a) is 6 Ah. A product (P.sub.a32 L.sub.a.Math.B.sub.a.Math.H.sub.a.Math.m.sub.a.Math.Q.sub.a.sup.1) of the length (L.sub.a) 10a, the width (B.sub.a) 12a, the height (H.sub.a) 14a, the mass (m.sub.a) and an inverse of the charge carrier capacity (Q.sub.a) in the present case is 1050 cm.sup.3 kg A h.sup.1.
[0036] A further exemplary embodiment of the invention is shown in FIG. 2. FIG. 2 shows a second portable machine tool formed as a battery-powered hammer drill. The second portable machine tool has a quick-change tool holder 18b. In the present case, the quick-change tool holder 18b is provided to hold SDS-max quick-change tools with a shaft diameter of 18 cm. In addition, the second portable machine tool has a length (L.sub.b) 10b, a width (B.sub.b) 12b, a height (H.sub.b) 14b and a mass (m.sub.b). In the present case, the length (L.sub.b) 10b is 48 cm, the width (B.sub.b) 12b is 9 cm, the height (H.sub.b) 14b is 26 cm and the mass (m.sub.b) is 6.5 kg. Furthermore, the second portable machine tool has an energy storage unit 16b formed as a battery pack with a charge carrier capacity (Q.sub.b). In the present case, the charge carrier capacity (Q.sub.b) is 4 Ah. A product (P.sub.b=L.sub.b.Math.B.sub.b.Math.H.sub.b.Math.m.sub.b.Math.Q.sub.b.sup.1) of the length (L.sub.b) 10b, the width (B.sub.b) 12b, the height (H.sub.b) 14b, the mass (m.sub.b) and an inverse of the charge carrier capacity (Q.sub.b) in the present case is 18,252 cm.sup.3 kg A h.sup.1.
[0037] A further exemplary embodiment of the invention is shown in FIG. 3. FIG. 3 shows a third portable machine tool formed as a battery-powered hammer drill. The third portable machine tool has a quick-change tool holder 18c. In the present case, the quick-change tool holder 18c is provided to hold SDS-hex quick-change machine tools with a hexagonal tool shaft with a shaft diameter of 28 cm. In addition, the third portable machine tool has a length (L.sub.c) 10c, a width (B.sub.c) 12c, a height (H.sub.c) 14c and a mass (m.sub.c). In the present case, the length (L.sub.c) 10c is 70 cm, the width (B.sub.c) 12c is 25 cm, the height (H.sub.c) 14c is 20 cm and the mass (m.sub.c) is 16 kg. Furthermore, the portable machine tool has an energy storage unit 16c formed as a battery pack with a charge carrier capacity (Q.sub.c). In the present case, the charge carrier capacity (Q.sub.c) is 6 Ah. A product (P.sub.c=L.sub.c.Math.B.sub.c.Math.H.sub.c.Math.m.sub.c.Math.Q.sub.c.sup.1) of the length (L.sub.c), the width (B.sub.c), the height (H.sub.c), the mass (m.sub.c) and an inverse of the charge carrier capacity (Q.sub.c) in the present case is 93,333 cm.sup.3 kg A h.sup.1.
[0038] FIG. 4 shows an exemplary flowchart of a method for manufacturing a portable machine tool having a length (L), a width (B), a height (H), a mass (M) and an energy storage unit with a charge carrier capacity (Q). In the present case, the first portable machine tool is manufactured (cf. FIG. 1). However, it is also conceivable that another machine tool is manufactured, in particular the second portable machine tool (cf. FIG. 2) or the third portable machine tool (cf. FIG. 3). In a first method step 20a, a check is made of the shaft diameter of a quick-change tool for which a quick-change tool holder of the portable machine tool is provided. In the present case, the quick-change tool holder 18a of the first portable machine tool is provided to hold SDS-plus quick-change tools with a shaft diameter of 10 mm. In a second method step 22a, on the basis of the shaft diameter, it is determined which value a product (P) of the length (L), the width (B), the height (H), the mass (m) and the inverse of the charge carrier capacity (Q) is not to be exceeded. In the present case, the product (P) is to be less than 1301 cm.sup.3 kg A h.sup.1for shaft diameters which are smaller than 12 mm, is to be less than 20,001 cm.sup.3 kg A h.sup.1for shaft diameters which are less than 20 mm, and is to be less than 100,001 cm.sup.3 kg A h.sup.1for shaft diameters which are larger than 26 mm. In a third method step 24a, the length (L), the width (B), the height (H), the mass (m) and the charge carrier capacity (Q) are chosen in such a way that the product (P) is smaller than the corresponding value. In the present case, the length (L.sub.a) 10a, the width (B.sub.a) 12a, the height (H.sub.a) 14a and the mass (m.sub.a) of the first portable machine tool and the charge carrier capacity (Q.sub.a) of the energy storage unit 16a of the first portable machine tool are chosen in such a way that the product (P.sub.a) is 1050 cm.sup.3 kg A h.sup.1(cf. FIG. 1).
