Hand-Held Power Tool Device, Hand-Held Power Tool having the Hand-Held Power Tool Device, and Accessories having the Hand-Held Power Tool Device

Abstract

A hand-held power tool device for a hand-held power tool, in particular an angle grinder, includes at least one attachment hood for connection to a protective hood for at least partially covering a working tool of the hand-held power tool. The attachment hood has at least one form-fitting element, which is provided to interact with a collar-like, free-standing outer region, running in a circumferential direction, of the protective hood and at least contribute to the connection.

Claims

1. A hand-held power tool device for a hand-held power tool, comprising: a protective hood defining a circumferential direction and including a collar-like and free-standing outer region that runs in the circumferential direction; and at least one attachment hood configured to connect to the protective hood for at least partially covering a working tool of the hand-held power tool, wherein the at least one attachment hood has at least one positive connecting element which is configured to cooperate with the collar-like and free-standing outer region of the protective hood so as to at least contribute to the connection between the at least one attachment hood and the protective hood.

2. The hand-held power tool device as claimed in claim 1, wherein the at least one attachment hood has at least one fixing unit configured to fix an angular position of the at least one attachment hood relative to the protective hood.

3. The hand-held power tool device as claimed in claim 2, wherein the at least one fixing unit permits the fixing in an angular position between the at least one attachment hood and the protective hood which is selectable by a user.

4. The hand-held power tool device as claimed in claim 2, wherein the at least one fixing unit has at least one fixing element which is configured as a clamping lever.

5. The hand-held power tool device as claimed in claim 2, wherein the at least one fixing unit has at least one fixing element which is configured as a clamping screw.

6. The hand-held power tool device as claimed in claim 2, wherein the at least one fixing unit has at least one fixing element which is configured as a stop element.

7. The hand-held power tool device as claimed in claim 2, wherein the at least one fixing unit has at least one fixing element which is configured as a wedge element.

8. The hand-held power tool device as claimed in claim 1, wherein the at least one positive connecting element is configured as an annular holding element.

9. The hand-held power tool device as claimed in claim 1, wherein the at least one attachment hood has at least one protective element configured to protect the outer region of the protective hood from damage.

10. The hand-held power tool device as claimed in claim 2, wherein the at least one attachment hood comprises (i) a first attachment hood element, and (ii) a second attachment hood element which is configured to be positively connected to the first attachment hood element.

11. The hand-held power tool device as claimed in claim 10, wherein the at least one fixing unit is arranged between the first attachment hood element and the second attachment hood element.

12. A hand-held power tool comprising a hand-held power tool device as claimed in claim 1.

13. An accessory for a hand-held power tool comprising a hand-held power tool device as claimed in claim 1.

14. The hand-held power tool device according to claim 1, wherein the hand-held power tool is an angle grinder.

Description

DRAWING

[0023] Further advantages emerge from the following description of the drawing. Seven exemplary embodiments of the invention are shown in the drawing. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently consider the features individually and combine them together to form further meaningful combinations.

[0024] In the drawing:

[0025] FIG. 1 shows a hand-held power tool having a hand-held power tool device comprising a protective hood and an attachment hood having a positive connecting element and a fixing unit in a schematic exploded view,

[0026] FIG. 2 shows the attachment hood with the positive connecting element and the fixing unit in a schematic view,

[0027] FIG. 3 shows a schematic view of the attachment hood connected to the protective hood,

[0028] FIG. 4 shows a schematic plan view of an accessory for a hand-held power tool, having a hand-held power tool device comprising a protective hood and an attachment hood having a positive connecting element and a fixing unit in a further exemplary embodiment,

[0029] FIG. 5 shows a schematic sectional view of the fixing unit of the exemplary embodiment of FIG. 4,

[0030] FIG. 6 shows a schematic plan view of an accessory for a hand-held power tool, having a hand-held power tool device comprising a protective hood and an attachment hood having a fixing unit in a further exemplary embodiment,

[0031] FIG. 7 shows a schematic sectional view of the fixing unit of the exemplary embodiment of FIG. 6,

[0032] FIG. 8 shows a schematic plan view of an accessory for a hand-held power tool, having a hand-held power tool device comprising a protective hood and an attachment hood having a fixing unit in a further exemplary embodiment,

[0033] FIG. 9 shows a schematic exploded view of the hand-held power tool device of the exemplary embodiment of FIG. 8,

[0034] FIG. 10 shows a schematic exploded view of an accessory for a hand-held power tool, having a hand-held power tool device comprising a protective hood and an attachment hood having a fixing unit in a further exemplary embodiment,

[0035] FIG. 11 shows a schematic side view of an accessory for a hand-held power tool, having a hand-held power tool device comprising a protective hood and an attachment hood having a fixing unit in a further exemplary embodiment,

[0036] FIG. 12 shows a schematic sectional view of the hand-held power tool device of the exemplary embodiment of FIG. 11,

[0037] FIG. 13 shows a schematic plan view of an accessory for a hand-held power tool, having a hand-held power tool device in a further exemplary embodiment comprising a protective hood and an attachment hood having a first attachment hood element and a second attachment hood element and a fixing unit arranged therebetween,

[0038] FIG. 14 shows a schematic exploded view of the hand-held power tool device of the exemplary embodiment of FIG. 13, and

[0039] FIG. 15 shows a schematic side view of the hand-held power tool device of the exemplary embodiment of FIGS. 13 and 14.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0040] FIG. 1 shows a hand-held power tool 50a. The hand-held power tool 50a is configured as an angle grinder. The hand-held power tool 50a has a hand-held power tool device 10a. The hand-held power tool device 10a has an attachment hood 12a. The attachment hood 12a is provided for connecting to a protective hood 14a of the hand-held power tool device 10a. The protective hood 14a is provided for partially covering a working tool 16a of the hand-held power tool 50a. The attachment hood 12a has a positive connecting element 18a. The positive connecting element 18a is provided to cooperate with a collar-like and free-standing outer region 22a, running in a circumferential direction 20a, of the protective hood 14a and at least contribute to the connection of the attachment hood 12a to the protective hood 14a.

[0041] FIG. 2 shows the attachment hood 12a with the positive connecting element 18a. The positive connecting element 18a is configured as a projection of the attachment hood 12a. The attachment hood 12a has a holding lip 68a. The holding lip 68a is provided to cooperate with a main protective surface 70a of the protective hood 14a.

[0042] The attachment hood 12a has a fixing unit 24a. The fixing unit 24a is provided for fixing an angular position 26a of the attachment hood 12a relative to the protective hood 14a.

[0043] The fixing unit 24a of the attachment hood 12a comprises a fixing element 28a. The fixing element 28a is configured as a clamping lever 30a. The clamping lever 30a has a lever element 72a and a tensioning hook element 74a.

[0044] FIG. 3 shows the attachment hood 12a connected to the protective hood 14a. The positive connecting element 18a cooperates with an outer region 22a of the protective hood 14a. For fixing the angular position 26a by means of the fixing unit 24a, the tensioning hook element 74a of the fixing element 28a which is configured as a clamping lever 30a encompasses a side edge 76a of the protective hood 14a. The connection may be fixed by a user by means of the lever element 72a connected to the tensioning hook element 74a.

[0045] Further exemplary embodiments of the invention are shown in FIGS. 4 to 15. The following descriptions and the drawings are substantially limited to the differences between the exemplary embodiments, wherein relative to components denoted the same, in particular relative to components with the same reference numerals, in principle reference may also be made to the drawings and/or the description of other exemplary embodiments, in particular of FIGS. 1 to 3. For differentiating between the exemplary embodiments the letter a has been placed after the reference numerals of the exemplary embodiment in FIGS. 1 to 3. In the exemplary embodiments of FIGS. 4 to 15, the letter a is replaced by the letters b to g.

[0046] An accessory 60b for a hand-held power tool (not shown) is shown in FIGS. 4 and 5. The accessory 60b comprises a hand-held power tool device 10b. The hand-held power tool device 10b differs from the hand-held power tool device 10a of the exemplary embodiment of FIGS. 1 to 3, relative to a positive connecting element 18b and relative to a fixing unit 24b of an attachment hood 12b.

[0047] The positive connecting element 18b is configured as a projection of the attachment hood 12b running continuously in a circumferential direction 20b. For connecting the attachment hood 12b to a protective hood 14b, the attachment hood 12b is pushed onto the protective hood 14b. In this case, the positive connecting element 18b positively encompasses a collar-like and free-standing outer region 22b, running in the circumferential direction 20b, of the protective hood 14b. The attachment hood 12b is rotatable relative to the protective hood 14b.

[0048] The fixing unit 24b is provided for fixing an angular position 26b of the attachment hood 12b and a protective hood 14b. An angular position 26b is selectable by a user. The fixing unit 24b has a fixing element 28b. The fixing element 28b is configured as a clamping screw 32b. In the angular position 26b which is selectable by the user, the fixing of the attachment hood 12b to the protective hood 14b is permitted by means of the clamping screw 32b of the fixing unit 24b.

[0049] FIG. 5 shows a section through the fixing unit 24b of the attachment hood 12b and through a part of the protective hood 14b. The fixing unit 24b has a receiving thread 46b. For the fixing, the clamping screw 32b is screwed into the receiving thread 46b. A contact surface 48b of the clamping screw 32b is pressed against the protective hood 14b for the fixing.

[0050] In FIGS. 6 and 7 a further exemplary embodiment is shown of an accessory 60c for a hand-held power tool (not shown). The accessory 60c has a hand-held power tool device 10c. The hand-held power tool device 10c substantially differs from the hand-held power tool device 10b of the exemplary embodiment of FIGS. 4 and 5 relative to a fixing unit 24c which is designed differently from the fixing unit 24b.

[0051] The fixing unit 24c is provided for fixing an angular position 26c of an attachment hood 12c and a protective hood 14c. The angular position 26c is selectable by a user. The fixing unit 24c has a fixing element 28c. The fixing element 28c is configured as a clamping screw 32c. In contrast to the clamping screw 32b of the previous exemplary embodiment, the clamping screw 32c is configured in two parts. The clamping screw 32c comprises a threaded bolt 52c and a clamping nut 54c. For the fixing, the threaded bolt 52c is inserted through an aperture 56c of the attachment hood 12c. A contact surface 48c of the threaded bolt 52c faces in the direction of an outer region 22c of the protective hood 14c. The attachment hood 12c has a protective element 40c for protecting an outer region 22c of the protective hood 14c from damage. The protective element 40c is arranged between the outer region 22c and the contact surface 48c of the threaded bolt 52c and consists of a felt fabric. For the fixing of the angular position 26c, the clamping nut 54c is screwed from an outer face 58c of the attachment hood 12c onto a thread of the threaded bolt 52 so that the contact surface 48c is pressed against the protective element 40c.

[0052] In FIGS. 8 and 9 a further exemplary embodiment of an accessory 60d is shown for a hand-held power tool (not shown). The accessory 60d has a hand-held power tool device 10d. The hand-held power tool device 10d differs from the previous exemplary embodiments relative to a design of the positive connecting element 18d of an attachment hood 12d and relative to a fixing unit 24d of the attachment hood 12d.

[0053] The positive connecting element 18d is configured as an annular holding element 38d. The annular holding element 38d has a rubber lip 62d. The rubber lip 62d of the annular holding element positively encloses a collar-like and free-standing outer region 22d, running in a circumferential direction 20d, of a protective hood 14d. The rubber lip 62d serves at the same time as a protective element 40d for protecting the outer region 22d of the protective hood 14d from damage.

[0054] The fixing unit 24d is provided for fixing an angular position 26d of the attachment hood 12d and a protective hood 14d. The angular position 26d is selectable by a user. The fixing unit 24d has a fixing element 28d. The fixing element 28d is configured as a clamping screw 32d. The clamping screw 32d comprises a tensioning nut 64d and a threaded bolt 52d. The threaded bolt 52d is connected by a material connection to the annular holding element 38d. For the fixing, the threaded bolt 52d is guided through an aperture 56d of the attachment hood 12d. In the selected angular position 26d, the tensioning nut 64d is screwed onto a thread of the threaded bolt 52d so that, for the fixing, the rubber lip 62d of the annular holding element 52d presses against the outer region of the protective hood 14d.

[0055] In FIG. 10 a further exemplary embodiment is shown of an accessory 60e for a hand-held power tool (not shown). The accessory 60e has a hand-held power tool device 10e. The hand-held power tool device 10e substantially differs from the hand-held power tool device 10d of the previous exemplary embodiment relative to a design of a fixing unit 24e of an attachment hood 12e.

[0056] The fixing unit 24e of the attachment hood 12e has a fixing element 28e. The fixing element 28e is configured as a clamping lever 30e, in contrast to the fixing element 28d of the previous exemplary embodiment which is configured as a clamping screw 32d. The clamping lever 30e comprises a lever element 66e and a resilient tensioning element 68e. The tensioning element 68e is connected by a material connection to a positive connecting element 18e of the attachment hood 12e which is configured as an annular holding element 52e. The resilient tensioning element 68e is guided through an aperture 56e in the attachment hood 12e and connected on an outer face of the attachment hood to the lever element 66e by means of a split pin (not shown) which is guided through a hole in the tensioning element 68e. For fixing an angular position 26e of the attachment hood 12c relative to the protective hood 14c, which is selectable by a user, the lever element 66e is turned and tensions the resilient tensioning element 68e.

[0057] In FIGS. 11 and 12 a further exemplary embodiment is shown of an accessory 60f for a hand-held power tool (not shown). The accessory 60f comprises a hand-held power tool device 10f. The hand-held power tool device 10f differs from the previous exemplary embodiments relative to a design of a positive connecting element 18f and relative to a fixing unit 24f of an attachment hood 12f.

[0058] The positive connecting element 18f is configured as a projection of the attachment hood 12f. The attachment hood 12f has a further positive connecting element 78f. The further positive connecting element 78f is configured as a further projection.

[0059] The fixing unit 24f of the attachment hood 12f has a fixing element 28f. The fixing element 28f is configured as a stop element 34f. In FIGS. 11 and 12 the attachment hood is connected and fixed to the protective hood 14f. For the connection, the positive connecting element 18f and the further positive connecting element in each case engage positively in an outer region 22f of the protective hood 14f. For the fixing, the fixing element 28f which is configured as a stop element 34f encompasses the outer region 22f of the protective hood 14f.

[0060] In FIGS. 13 to 15 a further exemplary embodiment is shown of an accessory 60g for a hand-held power tool (not shown). The accessory 60g comprises a hand-held power tool device 10g. The hand-held power tool device 10g differs from the previous exemplary embodiments relative to a design of an attachment hood 12g. The attachment hood 12g of the hand-held power tool device 10g comprises a first attachment hood element 42g and a second attachment hood element 44g. The second attachment hood element 44g of the attachment hood 12g is able to be positively connected to the first attachment hood element 44g.

[0061] The attachment hood 12g has a fixing unit 24g. The fixing unit 24g is provided for fixing an angular position 26g of the attachment hood 12g relative to a protective hood 14g. In a mounted state of the attachment hood 12g on the protective hood 14g (see FIG. 15), the fixing unit 24g is arranged between the first attachment hood element 42g and the second attachment hood element 44g. The second attachment hood element 44g has an actuating aperture 80g. The actuating aperture 80g is provided for actuating the fixing unit 24g.

[0062] The fixing unit 24g has a fixing element 28g. The fixing element 28g is configured as a wedge element 36g. For the fixing, the wedge element 36g presses against a contact surface 48g of an annular holding element 38g. The annular holding element 38g has a rubber lip 62g. The rubber lip 62g cooperates with a collar-like and free-standing outer region 22g, running in a circumferential direction 20g, of the protective hood 14g. For the fixing, a user reaches through the actuating aperture 80g and pushes the wedge element in the circumferential direction 20g against the contact surface 48g of the annular holding element 38g so that the rubber lip 62g encloses the outer region of the protective hood 14g in a rotationally fixed manner.