Hand-held power tool having locking unit

Abstract

The invention relates to a hand-held power tool having a tool receptacle (140) with an inner receptacle (211) and a ram for applying an impact pulse to a plug-in tool (145) arranged in the inner receptacle, a locking unit (160) is provided for locking the plug-in tool in the inner receptacle, said locking unit having a locking bolt (230) arranged at least substantially perpendicular to a longitudinal extension (102) of the inner receptacle (230), the locking bolt locks the plug-in tool in a locking position (200) in the inner receptacle and unlocks it in an unlocking position for removal from the inner receptacle, the locking bolt being connected to an actuating element (240) in a rotationally fixed manner, in the locking position of the locking bolt, the actuating element is locked in a locked position (219) on the tool receptacle in a rotationally fixed manner and can be moved from the locked position (219) into an intermediate position by acting counter to a spring force of the at least one spring element, and the locking bolt can be rotated from a locked position into an unlocked position by rotating the actuating element into the intermediate position.

Description

Technical Field

[0001] The present invention relates to a handheld power tool, in particular a breaker hammer, a drilling hammer, or a chiseling hammer, comprising a tool receptacle having an inner receptacle for receiving an inserted tool and a striker for applying an impact pulse to the inserted tool arranged in the inner receptacle. A locking unit is provided for locking the inserted tool in the inner receptacle, the locking unit having a locking bolt arranged at least approximately perpendicular to the longitudinal extension of the inner receptacle, the locking bolt locking the inserted tool in a locked position in the inner receptacle and unlocking it in an unlocked position for removal from the inner receptacle, the locking bolt being connected to an operating element in a rotationally fixed manner. Background Art

[0002] Such handheld power tools configured as breaker hammers are known from the prior art. The breaker hammer has a tool receptacle for receiving an inserted tool and is provided with a striker for applying an impact pulse to the inserted tool disposed in the tool receptacle. To lock the inserted tool in the inner receptacle, a locking unit is provided, which has a locking bolt arranged at least approximately perpendicular to the longitudinal extension of the inner receptacle. The locking bolt is connected to an operating element in a rotationally fixed manner, locking the inserted tool in the inner receptacle in a locked position and unlocking the inserted tool in an unlocked position for removal from the inner receptacle. Summary of the Invention

[0003] The present invention relates to a handheld power tool, in particular a breaker hammer, drilling hammer, or chiseling hammer, comprising a tool receptacle having an inner receptacle for receiving an inserted tool and a striker for applying an impact pulse to the inserted tool arranged in the inner receptacle. A locking unit is provided for locking the inserted tool in the inner receptacle, the locking unit having a locking bolt arranged at least approximately perpendicular to the longitudinal extension of the inner receptacle, the locking bolt locking the inserted tool in a locked position in the inner receptacle and unlocking it in an unlocked position for removal from the inner receptacle. The locking bolt is connected to an operating element in a rotationally fixed manner. In the locked position of the locking bolt, the operating element is locked in a rotationally fixed locking position on the tool receptacle and can be moved from the locked position into an intermediate position by acting against the spring force of at least one spring element. The locking bolt can be rotated from the locked position into the unlocked position by rotating the operating element into the intermediate position.

[0004] The present invention therefore makes it possible to provide a handheld power tool having a locking unit, in which a safe and reliable locking and unlocking of the locking bolt is achieved by means of an operating element that can be arranged in an intermediate position.

[0005] Preferably, in the locked position the operating element extends parallel to the longitudinal extension of the tool receptacle.

[0006] As a result, a space-saving and compact arrangement of the operating element can be achieved.

[0007] Preferably, at least one spring element is designed as a disk spring, wherein the disk spring is arranged on the locking bolt.

[0008] Thus, a safe and reliable arrangement of the at least one spring element can be achieved.

[0009] The at least one spring element is preferably arranged on the end of the locking bolt facing away from the operating element and / or on the end of the locking bolt facing the operating element.

[0010] A suitable arrangement of the at least one spring element can thus be achieved in a simple manner.

[0011] According to one embodiment, at least one spring element is formed integrally with the operating element.

[0012] Thus, an alternative spring element can be provided easily and uncomplicatedly.

[0013] Preferably, the operating element is designed as a spring clip or an elastomeric clip.

[0014] Therefore, a safe and reliable spring element can be provided.

[0015] Preferably, the operating element designed as a spring clip has spring arms that can be urged toward each other in order to move the operating element from the latching position into the intermediate position.

[0016] The operating element can thus be designed in a simple and uncomplicated manner.

[0017] According to one embodiment, the operating element can be rotated about a rotation axis, which is oriented perpendicularly to the longitudinal extension of the tool receiver, in order to be moved from the latching position into the intermediate position.

[0018] An alternative direction of movement of the operating element can thus be realized in a simple manner.

[0019] The tool receptacle preferably has a latching element having at least one receptacle and / or a protruding edge for latching the actuating element in a rotationally fixed manner in the latching position.

[0020] As a result, a safe and reliable locking of the operating element in the locked position can be achieved.

[0021] Preferably, the locking bolt is provided with at least one damping element for at least partially damping an action on the inserted tool in the idle state of the handheld power tool, wherein the operating element has a receptacle into which the locking element moves when damping is present in the idle state of the handheld power tool.

[0022] Thus, at least partial damping of the insertion tool can be achieved easily and uncomplicatedly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the following description, the invention is explained in more detail based on the exemplary embodiments shown in the drawings. It is shown that:

[0024] Figure 1 A perspective view of a handheld power tool, designed as a breaker hammer by way of example, having a hammer unit and a locking unit assigned to a tool receptacle,

[0025] Figure 2 have Figure 1 a perspective view of a first side of the tool receiving portion of the locking unit,

[0026] Figure 3 have Figure 1 a perspective view of a second side of the tool receiving portion of the locking unit,

[0027] Figure 4 have Figures 1 to 3 A side view of the tool receiving portion of the locking unit,

[0028] Figure 5 have Figures 1 to 4 A sectional view of the tool receiving portion of the locking unit,

[0029] Figure 6 With in the locked position Figures 1 to 5 A side view of the locking unit and the tool receptacle of the associated operating element in the locked position,

[0030] Figure 7 have Figures 1 to 6 Side view of the tool receiving portion of the locking unit, the tool receiving portion having the tool receiving portion in the middle position Figure 6 operating elements,

[0031] Figure 8 have Figures 1 to 7 A perspective view of a tool receiving portion of a locking unit having an alternative operating element,

[0032] Figure 9 With locking unit and in the middle position Figure 8 a sectional view of the tool receiving portion of the operating element,

[0033] Figure 10 With locking unit and in the middle position Figure 8 Cross-sectional view of the tool receiving portion of the operating element, relative to Figure 9 , the intermediate position is twisted in the circumferential direction,

[0034] Figure 11 have Figures 1 to 10 A perspective view of a tool receptacle of a locking unit having a further operating element in the locked position,

[0035] Figure 12 With locking unit and in the middle position Figure 11 A perspective view of the tool receiving part of the operating element,

[0036] Figure 13 With locking unit and in the middle position Figure 11 and Figure 12 An enlarged detail of the tool receiving portion of the operating element,

[0037] Figure 14 With locking unit and in the middle position Figures 11 to 13 a sectional view of the tool receiving portion of the operating element,

[0038] Figure 15 have Figures 1 to 14 A perspective view of a tool receiving portion of a locking unit having an alternative operating element,

[0039] Figure 16 With in the locked position Figure 15 A sectional view of the tool receiving portion of the locking unit,

[0040] Figure 17 With in the locked position Figure 15 and Figure 16 An enlarged detail of the tool receiving portion of the locking unit,

[0041] Figure 18 With locking unit and in the middle position Figures 15 to 17 Side view of the tool receiving part of the operating element,

[0042] Figure 19 have Figures 1 to 18 A perspective view of a tool receiving portion of a locking unit having an operating element according to another embodiment, and

[0043] Figure 20 With in the locked position Figure 19 Cross-sectional view of the tool receiving portion of the locking unit. DETAILED DESCRIPTION

[0044] In the figures, elements having the same or similar functions are provided with the same reference numerals and are described more precisely only once.

[0045] Figure 1 The handheld power tool 100, exemplarily configured as a breaker hammer, is shown. It has a hammer unit 150 and a tool receptacle 140 configured to receive an insert tool 145, in particular a chisel-type insert tool. The tool receptacle 140 is equipped with a locking unit 160 for locking the insert tool 145 in the tool receptacle 140. Furthermore, the handheld power tool 100 illustratively has a main handle 117 and, exemplarily, an additional handle 116, by which an operator can hold and guide the handheld power tool 100. The main handle 117 is illustratively configured in a U-shape. The additional handle 116 is also illustratively configured in a U-shape.

[0046] Furthermore, the handheld power tool 100 has a housing 110 in which a drive motor 120 is arranged. The drive motor 120 is preferably provided with an optional motor housing 125, which is illustratively arranged in the housing 110. The drive motor 120 is designed to drive a handheld power tool 140 or an inserted tool 145 arranged therein.

[0047] Furthermore, the drive motor 120 is preferably configured to drive a ram unit 150. Illustratively, the ram unit 150 is provided with a ram housing 155. Preferably, the ram housing 155 has a piston guide element for guiding at least one piston element along the longitudinal extension 102 of the ram housing 155 in at least one operating state of the handheld power tool 100, preferably in impact operation.

[0048] It should be noted that the present invention is not limited to a breaker hammer. Alternatively, the handheld power tool 100 can also be configured as a drilling hammer and / or a chiseling hammer, for example.

[0049] Figure 2 Show Figure 1 The tool receiving portion 140 of the handheld power tool 100 with the exemplary locking unit 160 is preferably provided with a tool receiving portion 140 for being arranged on Figure 1 The flange 205 on the housing 110. In addition, the tool receiving portion 140 has a Figure 1 The inner receiving portion 211 of the inserted tool 145 . Figure 1 The hammer 150 is configured to be loaded with an impact pulse Figure 1 The inserted tool 145 is arranged in the inner receiving part 211.

[0050] The locking unit 160 preferably has a locking bolt 230 that is arranged at least approximately perpendicular to the longitudinal extension 102 of the tool receptacle 140 or the inner receptacle 211 (illustratively, along the transverse direction 204). The locking bolt 230 is supported in two, preferably rectangular, receiving blocks 213, 214 that are arranged laterally to the tool receptacle 140. In this case, the receiving block 213 is arranged on the first side 201 of the locking unit 160, and the receiving block 214 is arranged opposite on the second side 202 of the locking unit 160. Figure 2 A first side 201 is shown, on which an operating element 240 associated with the locking unit 160 is arranged.

[0051] The locking bolt 230 locks the inserted tool 145 arranged in the inner receptacle 211 in the locked position 200 and unlocks it in the unlocked position for removal from the inner receptacle 211. The locking bolt 230 is connected to the operating element 240 in a rotationally fixed manner. In the locked position 200 of the locking bolt 230, the operating element 240 is locked in a rotationally fixed manner on the tool receptacle 140 in the locked position 219. Preferably, the operating element 240 extends parallel to the longitudinal extension 102 of the tool receptacle 140 in the locked position 219.

[0052] By means of at least one spring element ( Figure 3 The spring force of 340 in the middle is loaded oppositely, and the operating element 240 can move from the locking position 219 to the middle position ( Figure 7 700 in ). Preferably, the operating element 240 moves along the arrow 298 or swings around the axis of rotation 289. In this case, by twisting the operating element 240 to the middle position ( Figure 7 In the embodiment 700 ), the locking bolt 230 can be rotated in the circumferential direction 299 of the locking bolt 230 from the locking position 200 into the unlocking position.

[0053] Receiving block 213 has an inner receptacle 221. Illustratively, inner receptacle 221 is closed by a cover 225. Furthermore, locking bolt 230 is provided with a sleeve 260 on first side 201. Sleeve 260 has an inner receptacle 263 for receiving locking bolt 230. Furthermore, sleeve 260 illustratively has lower and upper flattened sides 261, 262. Preferably, operating element 240 has tabs 241, 243 assigned to the lower and upper sides 261, 262 of sleeve 260, respectively. Preferably, the two tabs 241, 243 are connected to each other by a tab 245 and form a receptacle 244. Sleeve 260 is received in receptacle 244. Furthermore, the operating element 240 has a groove 246 on its tabs 241, 243, and the sleeve 260 and the locking bolt 230 have associated grooves, wherein a protective pin 270 is arranged in the groove for connecting the operating element 240, the sleeve 260 and the locking bolt 230. The protective pin 270 preferably forms an axis of rotation 289, about which the operating element 240 can be pivoted along the arrow 298.

[0054] Furthermore, the operating element 240 has a handle section 247 arranged on the tab 245. Preferably, the tab 245 and the handle section 247 form a rectangular receiving portion 242. For example, a locking element 250 assigned to the tool receiving portion 140 is arranged inside the receiving portion 242. The locking element 250 is configured to lock the operating element 240 in a rotationally fixed manner in the locking position 219. Figure 1 In the idle state of the handheld power tool 100 , with damping present, the latching element 250 moves within the receptacle 242 along the longitudinal extension 102 , wherein the locking unit 160 remains in the locking position 200 .

[0055] Figure 3 From the second side 202, the Figure 2 The tool receiving portion 140 of the locking unit 160. Here, Figure 3 The receiving block 214 is shown with its inner receiving portion 321 . Similar to the inner receiving portion 221 , the inner receiving portion 321 is closed by a cover 325 .

[0056] Preferably, at least one spring element 340 is provided. According to one embodiment, the at least one spring element 340 is arranged on the locking bolt 230. Here, the at least one spring element 340 is preferably configured as a disc spring. Specifically, the at least one spring element 340 is arranged on the end of the locking bolt 230 facing away from the operating element 240. To this end, the locking bolt 230 has a circumferential flange 331 that forms an exposed edge 332. The circumferential flange 331 has a larger diameter than the locking bolt 230. The at least one spring element 340 is exposed in the transverse direction 204 at the exposed edge 332. Specifically, the spring element 340, configured as a disc spring, is arranged in the transverse direction 204 between the exposed edge 332 and the cover 325. Alternatively or optionally, the at least one spring element 340 is arranged on the end of the locking bolt 230 that faces the operating element.

[0057] Figure 4 The tool receptacle 140 is shown with the locking unit 160 in the locked position 200 and in the latching position 219 of the operating element 240. To lock the operating element 240 in the latching position 219 in a rotationally fixed manner, the latching element 250 has at least one (illustratively two) exposed edges 411, 412. The receptacle 242 of the operating element 250 is exposed at the exposed edges 411, 412, thereby preventing the operating element 250 from twisting.

[0058] Figure 5 The diagram shows the locking position 200 and the latching position 219 of the operating element 240. Figures 2 to 4 The tool receiving portion 140 of the locking unit 160. Here, Figure 5 A recess 511 for arranging the protection pin 270 in the locking bolt 230 is shown on the first side 201. According to one embodiment, the spring element 340 is arranged on the end of the locking bolt 230 facing away from the operating element 240. Figure 5 On the second side 202, the locking bolt 230 is shown with a circumferential flange 331 having an exposed edge 332, on which the spring element 340 is exposed. Preferably, a disk 520 is arranged between the spring element 340 and the cover 325 in the transverse direction 204. In addition, Figure 5 The recess 519 formed in the region of the inner receptacle 211 of the tool receptacle 140 is shown. In the unlocked position, the recess 519 releases an inserted tool, such as a Figure 1 The insertion tool 145 is removed from the inner receiving portion 211.

[0059] According to one embodiment, the locking bolt 230 is equipped with at least one damping element 530, 540 to at least partially dampen loading of the inserted tool 145 in the idle state of the handheld power tool 100. Illustratively, the inner receptacle 221, 321 widens in the transverse direction 204 toward the inner receptacle 211 into inner receptacles 532, 542. Illustratively, two damping elements 530, 540 are shown, with the damping element 530 being arranged in the inner receptacle 532 and the damping element 540 being arranged in the inner receptacle 542. The inner receptacles 532, 542 are not connected to the inner receptacle 211.

[0060] exist Figure 1 In the idle state of the handheld power tool 100 , when damping is present, the latching element 250 moves along the longitudinal extension 102 in the receptacle 242 of the operating element 240 due to the damping.

[0061] Figure 6 The tool holder 140 is shown in the locked position 200 and in the latched position 219 of the operating element 240. Figures 2 to 5 The locking unit 160. Here, Figure 6 The rounding 610 of the operating element 240 is illustrated. The rounding 610 is formed along the longitudinal extension 102 on an edge 611 facing the cover 225 .

[0062] Figure 7 The tool receiving portion 140 and the operating element 240 in the intermediate position 700 are shown. Figure 6 To place the operating element 240 in the intermediate position 700, the operating element 240 is twisted about the axis of rotation 289 along the arrow 298, wherein the rounded portion 610 of the operating element 240 engages the locking bolt 230 with the locking bolt 230. Figure 3 and Figure 5 The spring force of the spring element 340 is opposite to Figure 5 The actuator 240 is moved in the transverse direction 204 along the arrow 702 toward the first side 201. Here, a gap 720 is formed between the cover 225 and the sleeve 260. In the intermediate position 700, the operating element 240 can be twisted in the circumferential direction 299, whereby the locking bolt 230 is also twisted and the locking bolt 230 is locked. Figure 1 The inserted tool 145 arranged in the inner receiving portion 211 is released for removal.

[0063] Figure 8 The tool receiving portion 140 and Figures 1 to 7The locking unit 160 in FIG. 1 has an alternative operating element 840 . The operating element 840 has a cylindrical section 841 arranged on the outer circumference of the locking bolt 230 . On the end face facing the first side 201 , the operating element 840 has at least two radially outwardly facing latches 842 , 846 . The latches 842 , 846 have a larger diameter than the cylindrical section 841 . For illustration, five latches 842 , 846 are shown, wherein the latches 842 , 846 are interconnected in the circumferential direction 299 . A gap 843 is formed in the circumferential direction 299 between two adjacent latches 842 , 846 . The latch elements 844 corresponding to the gaps 843 are arranged offset in the transverse direction 204 toward the second side 202 . The latch elements 844 are exposed above the latch element 250 . Furthermore, the operating element 840 or the cylindrical section 841 is provided with a cover 848, which is arranged in an inner receptacle 849 of the cylindrical section 841. Preferably, a disk 810 is arranged between the operating element 240 and the cover 225 in the transverse direction 204.

[0064] In order to move the operating element 840 from the locked position 219 to Figure 10 In the intermediate position 700, the operating element 840 moves away from the cover portion 225 at the latching members 842, 846 in the transverse direction 204 against the spring force of the spring element ( Figure 9 In order to move the locking unit 160 to the unlocked position, the operating element 840 can be Figure 10 In the intermediate position 700 , the locking bolt 230 is rotated together.

[0065] Figure 9 Shown with the Figure 8 The locking unit 160 and the tool receiving portion 140 of the operating element 840 are shown. The operating element 840 is arranged on the outer periphery of the locking bolt 230. A spring element 911 is arranged in the inner receiving portion 849 of the cylindrical section 841. The spring element 911 is exposed on the cover 848 in the area of ​​the first side 201, wherein the cover 848 is fixed in position on the outer periphery of the locking bolt 230 by a disk 920.

[0066] Figure 10 The locking unit 160 and the operating element 840 are shown in the intermediate position 700. Figure 8 and Figure 9 The tool receiving portion 140 of the operating element 840. Here, the operating element 840 is in the locking part 842, 846. Figure 8In the direction of arrow 1001, the cover 225 is moved away from the cover 225 counter to the spring force of the spring element 911. In this process, the spring element 911 is compressed, and the operating element 840 or the cylindrical section 841 and the latching members 842, 846 are moved away from the cover 225 or the disk 810, so that a gap 720 is formed between the disk 810 and the operating element 840. In the intermediate position 700, the locking bolt 230 can be twisted into the unlocked position for movement.

[0067] Figure 11 Show Figures 1 to 10 The tool receiving portion 140 and the locking unit 160 in the embodiment of the present invention have an alternative operating element 1140. The operating element 1140 is preferably constructed in one piece with at least one spring element 340. Figure 11 In the embodiment, the operating element 1140 is configured with a spring element 340 as a spring clip having two spring arms 1141, 1142. Figure 11 In the latching position 219 shown in FIG, the latching element 250 latches the operating element 1140. Here, the latching element 250 has receptacles 1151, 1152 for receiving spring arms 1141, 1142. Here, the upper spring arm 1141 is arranged in the receptacle 1151, and the lower spring arm 1142 is arranged in the receptacle 1152.

[0068] In order to move the operating element 240 from the locked position 219 to Figure 12 In the intermediate position 700, spring arms 1141, 1142 can be loaded towards each other. Here, spring arm 1141 is loaded towards the direction of arrow 1102, and spring arm 1142 is loaded towards the direction of arrow 1103.

[0069] Furthermore, the locking bolt 230 has a circumferential flange 1162 which forms an exposed edge 1164 . Figure 8 The disc 810 is arranged between the exposed edge 1164 and the cover portion 225 along the transverse direction 204.

[0070] Figure 12 The tool receiving portion 140 is shown with the tool receiving portion 140 in the intermediate position 700. Figure 11 The locking unit 160 of the operating element 1140 is formed by loading the spring arms 1141, 1142 relative to each other so that the spring arms 1141, 1142 are moved out of the receiving portions 1151, 1152 of the locking element 250. Illustratively, the spring arms 1141, 1142 are moved out in the direction of the arrow 298. Figure 11In order to arrange the locking bolt 230 in the unlocked position, the locking bolt 230 can be rotated in the circumferential direction 299 from the illustrated intermediate position 700 by the operating element 1140 .

[0071] Figure 13 The tool receiving portion 140 is shown with the tool receiving portion 140 in the intermediate position 700. Figure 11 and Figure 12 The locking unit 160 of the operating element 1140 is shown, and the receiving parts 1151, 1152 of the locking element 250 are described. Figure 11 ), the spring arms 1141 , 1142 are arranged in the receptacles 1151 , 1152 , thereby reliably preventing the operating element 1140 from being rotated into the intermediate position 700 and the locking bolt 230 from being rotated into the unlocked position.

[0072] Figure 14 The tool receiving portion 140 is shown with the tool receiving portion 140 in the intermediate position 700. Figures 11 to 13 The locking unit 160 of the operating element 1140. Figure 14 The locking bolt 230 is shown with a circumferential flange 1162 on the first side 201, which positions the cover 225 in the inner receptacle 221 via the disk 810. On the second side 202, the locking bolt 230 has a protective disk 1410, which is arranged in the receptacle 1411 of the locking bolt 230. The protective disk 1410 forms the exposed edge 332. In the transverse direction 204, the disk 520 is arranged between the cover 325 and the exposed edge 332 of the protective disk 1410. The protective disk 1410 positions the disk 520 so that the cover 325 is arranged in the inner receptacle 321.

[0073] Figure 15 The tool receiving portion 140 and Figures 1 to 14 The locking unit 160 in FIG. 1 has an alternative operating element 1540. The operating element 1540 has a section 1545 and an operating section 1541 arranged on the outer periphery of the locking bolt 230. The operating section 1541 has a recess 1542 in which the locking element 250 is arranged in the locked position 219 of the operating element 1540. In addition, the locking bolt 230 has a receiving portion ( Figure 161661 in the figure). Protective disk 1562 forms an exposed edge 1564. In the transverse direction 204, a spring element 1510 is arranged between the section 1545 of the operating element 1540 and the protective disk 1562. Preferably, the spring element 1510 is configured as a disc spring. The section 1545 of the operating element 1540 is arranged in the transverse direction 204 between the cover portion 225 and the spring element 1510. To arrange the operating element 1540 in the intermediate position 700, the operating element 1540 is deflected in the direction of arrow 298 at the operating section 1541.

[0074] Figure 16 The tool receiving portion 140 is shown with the tool receiving portion 140 in the locked position 200. Figure 15 The locking unit 160 of the operating element 1540. Here, Figure 16 The receiving portion 1661 of the locking bolt 230 for receiving the protective disk 1562 is illustrated.

[0075] also, Figure 16 A recess 1620 is shown, which is associated with section 1545 of actuating element 1540 and is arranged on the outer circumference of locking pin 230. At the opposite end, locking pin 230 has a circumferential flange 331 with an exposed edge 332. A spring element 340 and a further optional spring element 1640 are arranged in transverse direction 204 between exposed edge 332 and disk 520. Preferably, spring elements 340, 1640 are designed as disc springs.

[0076] When actuating section 1541 is pivoted in the direction of arrow 298 or into intermediate position 700, spring elements 1510, 340, 1640 are compressed and move locking bolt 230 toward first side 201. Locking bolt 230 can then be twisted in the circumferential direction to be arranged in the unlocked position.

[0077] Figure 17 The locking unit 160 is shown in the locked position 200 and in the latched position 219 of the operating element 1540. Figure 15 and Figure 16 Here, Figure 17 The recess 1620 of the section 1545 of the operating element 1540 on the outer circumference of the locking bolt 230 is shown. Preferably, the locking bolt 230 has two opposite flattened portions 1711, 1712. The recess 1620 has a contour associated with the locking bolt 230. The flattened portions 1711, 1712 and the associated recess 1620 can form a positive fit for jointly rotating the locking bolt 230 and the operating element 1540.

[0078] Figure 18 The locking unit 160 is shown with the locking unit 160 in the intermediate position 700. Figures 15 to 17 The operating element 1540 has a section 1545 of the operating element 1540 having an edge 1811 which is arranged facing away from the operating section 1541 of the operating element 1540. The edge 1811 forms an axis of rotation 1810 in the intermediate position 700.

[0079] Figure 19 The tool receiving portion 140 and Figures 1 to 18 The locking unit 160 has an alternative operating element 1940. The operating element 1940 is designed as an elastomeric clamp. The operating element 1940 has two tabs 1943, 1945, which are connected to each other by a connecting piece 1948. Preferably, the connecting piece 1948 is equipped with an operating section 1949. At their free ends, the tabs 1943, 1945 each have a connecting sleeve 1942, 1944, each having an inner receptacle 1921. The inner receptacle 1921 is connected to the transverse tab 1910 associated with the locking bolt 230 and forms a positive fit with the transverse tab 1910. In this case, the transverse tab 1910 forms the axis of rotation.

[0080] In the locked position 219 of the operating element 1940, the connecting piece 1948 rests on the side 1999 of the locking element 250 facing away from the inner receptacle 211 of the tool receptacle 140. To arrange the operating element 1940 in the intermediate position 700, the operating element 1940 is extended away from the inner receptacle 211 at the operating section 1949 or in the direction of the arrow 1901 to release the positive connection between the locking element 250 and the operating element 1940, and then rotated in the direction of the arrow 298 about the rotation axis formed by the cross piece 1910. To arrange in the unlocked position, the locking bolt 230 is rotated in the circumferential direction 299 by rotating the operating element 1940.

[0081] Figure 20 The tool holder 140 and the tool holder 140 are shown in the latched position 219 of the operating element 1940. Figure 19 In the latching position 219 , the latching element 250 and the operating element 1940 or the connecting piece 1948 form a positive fit.

Claims

1. A handheld power tool (100), in particular a breaker hammer, a drilling hammer or a chisel hammer, comprising a tool receptacle (140) having an inner receptacle (211) for receiving an inserted tool (145), and a striker (150) for applying an impact pulse to the inserted tool (145) arranged in the inner receptacle (211), wherein: In order to lock the inserted tool (145) in the inner receptacle (211), a locking unit (160) is provided, which has a locking bolt (230) arranged at least approximately perpendicular to the longitudinal extension (102) of the inner receptacle (211), which locks the inserted tool (145) in the inner receptacle (211) in a locked position (200) and unlocks it in an unlocked position for removal from the inner receptacle (211), wherein the locking bolt (230) is connected to an operating element (240) in a rotationally fixed manner. It is characterized in that the operating element (240) is locked in a locking position (219) on the tool receiving part (140) in a rotationally fixed manner in the locking position (200) of the locking bolt (230) and can be moved from the locking position (219) to an intermediate position (700) by being loaded in a direction opposite to the spring force of at least one spring element (340), wherein the locking bolt (230) can be twisted from the locking position (200) to the unlocking position by twisting the operating element (240) in the intermediate position (700).

2. The handheld power tool according to claim 1, wherein In the latching position (219), the operating element (240) extends parallel to the longitudinal extension (102) of the tool receptacle (140).

3. The handheld power tool according to claim 1 or 2, characterized in that The at least one spring element (340) is designed as a leg spring, wherein the leg spring is arranged on the locking bolt (230).

4. The handheld power tool according to claim 1, characterized in that The at least one spring element (340) is arranged on an end of the locking bolt (230) facing away from the operating element (240) and / or on an end of the locking bolt (230) facing the operating element.

5. The handheld power tool according to claim 1 or 2, characterized in that The at least one spring element (340) is formed integrally with the operating element (1140).

6. The handheld power tool according to claim 5, characterized in that The operating element (1140; 1940) is designed as a spring clip or an elastomeric clip.

7. The handheld power tool according to claim 6, characterized in that An operating element (1140) designed as a spring clip has spring arms (1141, 1142) that can be urged toward each other in order to move the operating element (240) from the latching position (219) into the intermediate position (700).

8. The handheld power tool according to any one of claims 1 to 4, characterized in that The operating element (240) is rotatable about a rotation axis (289) in order to move from the latching position (219) into the intermediate position (700), the rotation axis being oriented perpendicularly to the longitudinal extension (102) of the tool receptacle (140).

9. The hand-held power tool according to claim 1, characterized in that The tool receiving portion (140) has a locking element (250) having at least one receiving portion (1151, 1152) and / or an exposed edge (411, 412) in order to lock the operating element (240) in the locking position (219) in a rotationally fixed manner.

10. The handheld power tool according to claim 9, characterized in that The locking bolt (230) is provided with at least one damping element (530, 540) for at least partially damping an action on the inserted tool (145) in an idle state of the handheld power tool (100), wherein the operating element (240) has a receptacle (242) in which the locking element (250) moves when damping is present in the idle state of the handheld power tool (200).

Images