CN113001476A - Hand-held power tool system and tool attachment for a hand-held power tool - Google Patents

Hand-held power tool system and tool attachment for a hand-held power tool Download PDF

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Publication number
CN113001476A
CN113001476A CN202011509715.1A CN202011509715A CN113001476A CN 113001476 A CN113001476 A CN 113001476A CN 202011509715 A CN202011509715 A CN 202011509715A CN 113001476 A CN113001476 A CN 113001476A
Authority
CN
China
Prior art keywords
attachment
locking sleeve
tool
hand
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011509715.1A
Other languages
Chinese (zh)
Inventor
L·施密德
J·科阿利克
P·海嫩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN113001476A publication Critical patent/CN113001476A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0038—Locking members of special shape
    • B25D2217/0042—Ball-shaped locking members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0053—Devices for securing the tool retainer to the machine part

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The invention relates to a hand-held power tool system having a hand-held power tool and a tool attachment, which can be releasably locked on the hand-held power tool for an attachment operating mode, the tool attachment having a locking unit with an attachment-side locking sleeve and at least one locking element for locking an application tool on an attachment-side tool receptacle of the tool attachment, the attachment-side locking sleeve being movable along an associated actuating path, the associated actuating path being divided into a first and a second path section, the first path section only enabling partial release of the at least one locking element that is locked by the attachment-side locking sleeve in the attachment operating mode, and the second path section enabling complete release of the at least one locking element that is locked by the attachment-side locking sleeve in the attachment operating mode. The invention also relates to a tool accessory.

Description

Hand-held power tool system and tool attachment for a hand-held power tool
Technical Field
The invention relates to a hand-held power tool system having a hand-held power tool, in particular a drill hammer, and a tool attachment which can be releasably locked to the hand-held power tool for an attachment operating mode, wherein the hand-held power tool has a locking device for locking the tool attachment to a machine-side tool receptacle of the hand-held power tool, the locking device having a machine-side locking sleeve, and wherein the tool attachment has a locking unit which has an attachment-side locking sleeve and at least one locking element for locking an application tool to the attachment-side tool receptacle of the tool attachment.
Background
Such hand-held power tool systems with a hand-held power tool designed as a hammer drill and a tool attachment are known from the prior art. In this case, the tool attachment can be releasably locked on the hand-held power tool. In order to lock the tool attachment to the hand-held power tool, the hand-held power tool has a locking device with a locking sleeve. Similarly, the tool attachment has a locking unit with a locking sleeve for locking an application tool, for example a drill, on the tool attachment or in a tool receptacle associated with the tool attachment. To unlock the application tool, the locking sleeve of the tool attachment is moved from the locked position into the unlocked position. In the unlocked position, the application tool is released and can be removed from the tool receiving portion of the tool attachment.
Disclosure of Invention
The invention relates to a hand-held power tool system having a hand-held power tool, in particular a drill hammer, and a tool attachment which can be releasably locked to the hand-held power tool for an attachment operating mode, wherein the hand-held power tool has a locking device for locking the tool attachment to a machine-side tool receptacle of the hand-held power tool, the locking device having a machine-side locking sleeve, and wherein the tool attachment has a locking unit which has an attachment-side locking sleeve and at least one locking element for locking an application tool to the attachment-side tool receptacle of the tool attachment. The accessory-side locking sleeve can be moved on the accessory-side tool receptacle in the longitudinal direction of the accessory-side tool receptacle along an associated actuating path, wherein the associated actuating path is divided into a first and a second path section, and wherein the first path section only enables partial release of the at least one locking element that is latched by the accessory-side locking sleeve in the accessory operating mode, and the second path section enables complete release of the at least one locking element that is latched by the accessory-side locking sleeve in the accessory operating mode.
The invention thus achieves the object of providing a hand-held power tool system having a hand-held power tool and a tool attachment, wherein a safe and reliable operation can be achieved by dividing the operating path into a first and a second path section, wherein an unintentional dropping of an application tool which is arranged in a tool receptacle of the tool attachment and is unlocked can be prevented simply and without complications.
Preferably, the machine-side locking socket and the attachment-side locking socket are kinematically coupled to one another in the attachment operating mode.
In a simple manner, at least the second path section of the actuating path can thus be assigned to both the machine-side locking sleeve and the attachment-side locking sleeve.
Preferably, the accessory-side locking sleeve has a driver and the machine-side locking sleeve has a driver element, wherein in the accessory operating mode the machine-side locking sleeve and the accessory-side locking sleeve are coupled to one another in a kinematic manner by the driver and the driver element.
A safe and reliable coupling can thus be achieved.
According to one embodiment, in the accessory operating mode, a movement of the accessory-side locking sleeve along the second path section causes a movement of the machine-side locking sleeve along the machine-side tool receptacle.
Unlocking of the application tool arranged in the tool attachment can thus be achieved simply and without complications, wherein accidental dropping can be prevented.
Preferably, the driver loads the driver element to move the machine-side locking sleeve in the event of a movement of the attachment-side locking sleeve along the second path section.
The loading of the accessory-side locking sleeve on the machine-side locking sleeve for unlocking can thus be achieved in a simple manner.
In the accessory operating mode, a first loading force is preferably required for moving the accessory-side locking sleeve along the first path section, and a second loading force is required for moving the accessory-side locking sleeve along the second path section, wherein the second loading force is smaller than the first loading force.
Thus, a user of the hand-held power tool system can safely and reliably distinguish between movements along the first and second path sections.
According to one embodiment, the accessory-side locking sleeve is loaded by the associated spring element in a first locking position, wherein a first loading force for moving the accessory-side locking sleeve along the first path section needs to be exerted on the accessory-side locking sleeve against the spring force exerted by the associated spring element.
The locking of the application tool in the tool attachment can thus be achieved simply and without complications, and the first loading force can be simultaneously predetermined.
Preferably, the machine-side locking sleeve is loaded by the associated spring element in the second locking position, wherein a second loading force for moving the attachment-side locking sleeve along the second path section needs to be exerted on the attachment-side locking sleeve at least partially against the spring force exerted by the spring element of the machine-side locking sleeve.
The second loading force can thus be predetermined in a simple manner.
Preferably, the accessory-side locking sleeve has an internal auxiliary ramp which, in the event of a movement of the accessory-side locking sleeve along the first path section, only enables a partial release of the at least one locking element which is latched by the accessory-side locking sleeve in the accessory operating mode.
An accidental falling of the application tool arranged in the tool attachment can thus be safely and reliably prevented as long as the attachment-side locking sleeve is moved only along the first path section.
According to one embodiment, the at least one locking element has at least one detent.
A cost-effective and uncomplicated locking element can thus be provided.
Furthermore, the invention provides a tool attachment with a tool receiving portion and a locking unit with a locking sleeve and at least one locking element for locking an application tool on the tool receiving portion. The locking sleeve is movable on the tool receiver in the longitudinal direction of the tool receiver along an associated actuating path, wherein the associated actuating path is divided into a first and a second path section, and wherein the first path section only enables partial release of the at least one locking element that is latched by the locking sleeve in the locking mode, and the second path section enables complete release of the at least one locking element that is latched by the locking sleeve in the locking mode.
The invention thus provides a tool attachment with a tool receptacle and a locking unit, wherein a safe and reliable operation can be achieved by dividing the manipulation path into a first and a second path section, wherein an accidental drop of an unlocked application tool arranged in the tool receptacle of the tool attachment can be prevented simply and without complications.
Preferably, the locking sleeve has an internal assist ramp which only enables partial release of the at least one locking element which is latched by the locking sleeve in the locking mode if the locking sleeve is moved along the first path section.
An accidental falling of the application tool arranged in the tool attachment can thus be safely and reliably prevented as long as the attachment-side locking sleeve is moved only along the first path section.
Preferably, the at least one locking element has at least one detent.
A cost-effective and uncomplicated locking element can thus be provided.
According to one embodiment, the tool attachment is provided for releasable locking on a hand-held power tool, in particular a drill hammer, in an attachment operating mode, wherein the hand-held power tool has a locking device with a machine-side locking sleeve, wherein the locking sleeve of the tool attachment has a driver for kinematic coupling with a driver element of the machine-side locking sleeve in the attachment operating mode.
A secure and reliable coupling of the tool attachment to the hand-held power tool is thus possible.
Preferably, the driver is designed to load the driver element for moving the machine-side locking sleeve when the locking sleeve of the tool attachment is moved along the second path section in the attachment operating mode.
Unlocking of the application tool arranged in the tool attachment can thus be achieved simply and without complications, wherein accidental dropping can be prevented.
Drawings
In the following description, the invention is explained in detail on the basis of embodiments shown in the drawings. The figures show:
figure 1 is a side view of an exemplary hand-held power tool together with a tool attachment for constructing a hand-held power tool system,
fig. 2 is a longitudinal section through the hand-held power tool system of fig. 1 in a locked position,
fig. 3 is a longitudinal section through the hand-held power tool system of fig. 1 and 2 in a partially unlocked position,
fig. 4 is a longitudinal section through the hand-held power tool system of fig. 1 to 3 in the unlocked position,
fig. 5 is a longitudinal section through the hand-held power tool system of fig. 1 according to a further embodiment in the partially locked position,
fig. 6 is a longitudinal section through the hand-held power tool system of fig. 1 and 5 in the unlocked position, an
Fig. 7 is a longitudinal section through the locking sleeve of the hand-held power tool of fig. 2 to 4.
Detailed Description
In the figures, elements having the same or similar function are provided with the same reference numerals and are only described once in detail.
Fig. 1 shows a hand-held power tool system 190 having an exemplary hand-held power tool 100 and a tool attachment 150 that can be releasably fastened to the hand-held power tool 100. The hand-held power tool 100 has a housing 105, in which at least one drive motor 110 for driving an output shaft 115 is preferably arranged. The output shaft 115 is preferably assigned a tool receiver (222 in fig. 2) which is designed to receive a preferably exchangeable application tool 140.
Preferably, the housing 105 has a handle 117 on which the manual switch 109 is arranged. The drive motor 110 can be actuated, i.e., switched on and off, for example, by a manual switch 109 and can preferably be electronically controlled or regulated in such a way that a reverse operation and a predetermination of a desired rotational speed are preferably possible. Furthermore, the hand-held power tool 100 can be connected to the battery pack 120 for supplying power independently of the power grid, but can also be operated in a power grid-dependent manner instead.
The hand-held power tool 100 can optionally have a transmission and/or a striking mechanism. The hand-held power tool 100 with the percussion mechanism is preferably designed as a drill hammer (hammer drill) and/or as a percussion hammer (hammer drill). The hand-held power tool 100 is in particular designed as an sdplus drill hammer and/or an sdplus impact hammer. In the illustration, the hand-held power tool 100 has an optional additional handle 130. However, the hand-held power tool 100 can also be designed in any other manner, as long as it can be connected to the tool attachment 150 according to the invention.
The tool attachment 150 is preferably configured to receive the application tool 140. The tool attachment 150 can be driven by the drive motor 110 of the hand-held power tool 100. The tool attachment 150 preferably has a tool receptacle (261 in fig. 2) and can be received at least in sections in the tool receptacle (222 in fig. 2) of the hand-held power tool 100. In the illustration, the longitudinal direction 199 is assigned to the tool attachment 150, in particular to the tool receptacle (261 in fig. 2).
Fig. 2 shows the tool attachment 150 arranged on the hand-held power tool 100 of fig. 1 in a locked position. In this case, the tool attachment 150 is locked on the hand-held power tool 100 or the output shaft 115, and the application tool 140 is locked in the tool attachment 150. Fig. 2 furthermore illustrates a striking pin 205 arranged on the output shaft 115 for generating a striking in the event of activation of the striking mechanism.
Preferably, the tool attachment 150 can be releasably locked on the hand-held power tool 100 for the attachment operating mode. In the context of the present invention, the term "accessory operating mode" is understood to mean the operation of the hand-held power tool 100 with a tool accessory, in particular the tool accessory 150. For this purpose, the hand-held power tool 100 has a locking device 280 at least for locking the tool attachment 150 on the machine-side tool receiver 222 of the hand-held power tool 100.
The locking device 280 preferably has a machine-side/hand-held machine tool-side locking sleeve 210. Preferably, the machine-side locking sleeve 210 is loaded by means of the spring element 208 in the axial direction in the direction of the tool attachment 150 or in the direction pointing away from the housing end of the hand-held power tool 100. The spring element 208 is preferably clamped on both sides between a coupling sleeve (bundhoule) 207 and an internally arranged hollow cylindrical support ring 211 of the locking sleeve 210, which is fastened to the locking sleeve 210. The coupling sleeve 207 is preferably fixed to the output shaft 115 at least in the axial direction 201 or in the longitudinal direction 199.
Preferably, the locking sleeve 210 has at least one latching hook 212 on its inner circumference, which latching hook is preferably directed inward in the radial direction 202. At least one snap hook 212 is preferably used to fasten the locking sleeve 210 to the coupling sleeve 207. For this purpose, the coupling sleeve 207 has a coupling flange 213 which points outwards in the radial direction 202. In the illustration, at least one snap hook 212 snaps over the engagement flange 213.
Preferably, the locking element 216 associated with the locking device 280 is loaded into the receiving recess 206 of the output shaft 115 and into the slot 215 of the tool attachment 150 by means of the support ring 211. It is pointed out that such a machine-side locking sleeve 210 with locking device 280 is sufficiently known from the prior art and a detailed description is omitted for the sake of brevity of the description.
The slot 215 is preferably associated with the carrier 260 of the tool attachment 150. Preferably, the carrier 260 is arranged in sections on the tool receiver 222 of the hand-held power tool 100. Preferably, the tool attachment 150 is locked on the hand-held power tool 100 by means of a form-locking connection. The carrier 260 has a first locking section 267 for locking on the hand-held power tool 100 and a second locking section 268 for locking the application tool 140 in the tool attachment 150.
In addition, the tool attachment 150 preferably has a locking unit 290. The locking unit 290 has an attachment-side locking sleeve 250 and at least one locking element 263 for locking the application tool 140 on the tool attachment 150. Preferably, the tool attachment 150 has an attachment-side tool receiving portion 261 for receiving the application tool 140. The tool receiver 261 is preferably designed as an sdplus tool receiver.
The carrier 260 has a tool receptacle 261 at its free end or on the second locking section 268 for the arrangement of the application tool 140. The carrier 260 preferably has a tool receiving portion 261 on its inner circumference. In order to lock the application tool 140 on the carrier 260, the tool attachment 150 preferably has a second locking section 268. Preferably, the second locking section 268 has at least one, preferably oval, void 262. Preferably, at least one locking element 263 is located in at least one oval recess 262 for locking the application tool 140 in the tool attachment 150 or the tool receiver 261.
Furthermore, the locking sleeve 250 is preferably associated with a support ring 252 inserted in the radial direction 202 for radially locking the at least one locking element 263. Preferably, the cylindrical inner surface 257 loads the at least one locking element 263 into the recess 262. The locking sleeve 250 is preferably loaded by a spring element 255 in the direction of its free end. The spring element 255 is supported between the shoulder 265 and a disk 253 resting on the support ring 252. The shoulder 265 preferably connects a first locking section 267 for locking the tool attachment 150 on the hand-held power tool 100 to a second locking section 268 for locking the application tool 140.
Preferably, a protective cap 270 is provided in order to axially limit the travel of the locking sleeve 250 in the longitudinal direction 199 or in the axial direction 201 of the accessory-side tool receiver 261. Preferably, the protective cap 270 is fixed to the carrier 260 by means of a first and/or a second catch element 271, 272.
Furthermore, the locking sleeve 250 preferably has an annular groove 254 on its end face facing the hand-held power tool. The annular wall 217 of the machine-side locking sleeve 210 of the hand-held power tool 100 can preferably be arranged at least in sections in the annular groove 254.
Preferably, the accessory-side locking sleeve 250 is displaceable on the accessory-side tool receiver 261 in the longitudinal direction 199 of the accessory-side tool receiver 261 along an associated actuation path (402 in fig. 4). The associated control path (402 in fig. 4) is preferably divided into a first and a second path section (302 in fig. 3; 401 in fig. 4). In this case, the first path section (302 in fig. 3) preferably only enables partial release of the at least one locking element 263, which is latched by the accessory-side locking sleeve 250 in the accessory operating mode. Preferably, the second path section (401 in fig. 4) makes it possible to completely release the at least one locking element 263 which is latched by the accessory-side locking sleeve 250 in the accessory operating mode.
Preferably, the machine-side locking sleeve 210 and the accessory-side locking sleeve 250 are kinematically coupled to each other in the accessory operating mode. Here, the accessory-side locking sleeve 250 has a driver 259 and the machine-side locking sleeve 210 has a driver element 219. In the accessory operating mode, the machine-side locking sleeve 210 and the accessory-side locking sleeve 250 are preferably coupled to one another in terms of movement by means of the driver 259 and the driver element 219. Here, movement of the accessory-side locking sleeve 250 along the second path section (401 in fig. 4) causes movement of the machine-side locking sleeve 210 along the machine-side tool receptacle 222. In the case of a movement of the accessory-side locking sleeve 250 along the second path section (401 in fig. 4), the driver 259 preferably loads the driver element 219 in order to move the machine-side locking sleeve 210.
According to one embodiment, in the accessory operating mode, a first loading force is required for moving the accessory-side locking sleeve 250 along the first path section (302 in fig. 3) and a second loading force is required for moving the accessory-side locking sleeve 250 along the second path section (401 in fig. 4). The second loading force is preferably less than the first loading force. However, the two loading forces can also be equally large, or the first loading force can be smaller than the second loading force.
Preferably, the accessory-side locking sleeve 250 is loaded by the associated spring element 255 in a first locking position, wherein a first loading force for moving the accessory-side locking sleeve 250 along the first path section (302 in fig. 3) can be applied to the accessory-side locking sleeve 250 against the spring force exerted by the associated spring element 255. Furthermore, the machine-side locking sleeve 210 is preferably acted upon by the associated spring element 208 in a second locking position, wherein a second application force for displacing the attachment-side locking sleeve 250 along the second path section (401 in fig. 4) is applied to the attachment-side locking sleeve 250 at least partially against the spring force exerted by the spring element 208 associated with the machine-side locking sleeve 210. Preferably, the first loading force corresponds to the spring force of the spring element 255. Furthermore, the second loading force at least partially corresponds to the spring force of the spring element 208.
The attachment-side locking sleeve 250 preferably has an internal auxiliary ramp 256 which only enables a partial release of the at least one locking element 263 if the attachment-side locking sleeve 250 is moved along the first path section (302 in fig. 3). According to one embodiment, the at least one locking element 263 has at least one detent.
Fig. 3 shows the tool attachment 150 of fig. 2 arranged on the hand-held power tool 100 in a partially unlocked position. Here, the accessory-side locking sleeve 250 has been moved in the longitudinal direction 199 or in the direction of the arrow 301. The movement of the locking sleeve 250 can be effected here by loading the accessory-side locking sleeve 250 or by pulling the application tool 140 out of the tool receptacle 261 in the direction of the arrow 303.
By loading the accessory-side locking sleeve 250, the accessory-side locking sleeve 250 moves the first path segment 302. In this case, the first path section 302 preferably only enables partial release of the at least one locking element 263, which is latched by the accessory-side locking sleeve 250 in the accessory operating mode. I.e. partial unlocking occurs. Preferably, the accessory-side locking sleeve 250 is loaded by the spring element 255 in the first locking position, wherein a first loading force for moving the accessory-side locking sleeve 250 along the first path section 302 needs to be exerted on the accessory-side locking sleeve 250 against the spring force exerted by the associated spring element 255.
In the illustration, the accessory-side locking sleeve 250 rests with its driver 259 against the machine-side locking sleeve driver element 219. The support ring 252 or the cylindrical inner surface 257 preferably releases the locking element 263 after the attachment-side locking sleeve 250 has been moved. However, the locking element 263 cannot slide along the inner assist ramp 256 in this position and cannot release the application tool 140, since the opening between the oval cutout 262 and the inner assist ramp 256 is smaller than the diameter of the locking element 263.
Fig. 4 shows the tool attachment 150 of fig. 2 and 3 arranged on the hand-held power tool 100 in an unlocked position, in which the attachment-side locking sleeve 250 has been moved in the longitudinal direction 199 or in the direction of the arrow 301 by the first path section 302 and the second path section 401. The movement of the accessory-side locking sleeve 250 can be effected here by loading the accessory-side locking sleeve 250 or by pulling the application tool 140 out of the tool receptacle 261 in the direction of the arrow 303. Preferably, the second path section 401 enables complete release of the at least one locking element 263 which is latched by the accessory-side locking sleeve 250 in the accessory operating mode.
Preferably, movement of the accessory side locking sleeve 250 along the second path section 401 causes movement of the machine side locking sleeve 210 along the machine side tool receiving portion 222. In the case of a movement of the accessory-side locking sleeve 250 along the second path section 401, the driver 259 preferably loads the driver element 219 in order to move the machine-side locking sleeve 210. In this case, the support ring 211 is moved in the illustration along the arrow 301 by the application of the driving element 219. Preferably, the support ring 211 is moved by the second path section 401.
A second loading force is required for movement along the second path segment 401. In this case, the machine-side locking sleeve 210 is loaded by the associated spring element 208 in the second locking position, wherein a second loading force for displacing the attachment-side locking sleeve 250 along the second path section 401 is preferably exerted on the attachment-side locking sleeve 250 at least partially against the spring force exerted by the spring element 255 of the machine-side locking sleeve 210. That is, the loading force preferably corresponds to the spring force of the spring element 255. It is pointed out that the spring force can be constructed by a plurality of spring elements combined with one another. Preferably, the attachment-side locking sleeve 250 is displaceable on the attachment-side tool receiver 261 in the longitudinal direction 199 along the associated actuating path 402. The associated control path 402 is divided into a first and a second path section 302, 401. The opening between the oval cutout 262 and the inner assist ramp 256 is now so large that the locking element 263 can pass through. The locking element 263 can now slide in the radial direction 202 outwards along the inner assist ramp 256 and release the application tool 140.
Fig. 5 shows an alternative tool attachment 150, which has a further spring element 505 on its second locking section 267 for locking on the hand-held power tool 100 for displacing the attachment-side locking sleeve 250 by the second path section 401. Preferably, the spring element 505 is arranged between a support disc 510 facing the locking sleeve 250 and a disc 512 arranged facing away from the locking sleeve 250. The support disk 510 is preferably blocked in the axial direction 201 or in the longitudinal direction 199 by the blocking disk 514. Similarly, the disk 512 is locked in the axial direction 201 or in the longitudinal direction 199 by the locking disk 516. The support plate 510 is preferably designed such that the driver 259 acts on the driver 259 when the second path section 401 is displaced. In the locking position shown in fig. 5, the support ring 252 holds the locking element 263 and the application tool 140 is locked in the tool receptacle 261.
Fig. 6 shows the tool attachment 150 of fig. 5 with the attachment-side locking sleeve 250 in the unlocked position of the application tool 140. In this unlocked position, the accessory-side locking sleeve 250 is arranged to have been moved along its longitudinal direction 199 by the manipulation path 402 in fig. 4. Here, the driver 259 loads the support plate 510, wherein the accessory-side locking sleeve 250 has been moved over the first and second path sections 302, 401. Preferably, the spring element 505 is slightly compressed. The locking element 263 is released in the illustration by the support ring 252 and can slide along the inner assist ramp 256 and release the application tool 140.
Fig. 7 shows the locking sleeve 210 of the hand-held power tool 100 of fig. 2 and illustrates the arrangement of the driver element 219 and the at least one latching hook 212 on the inner circumference of the locking sleeve 210. In the illustration, a plurality of latching hooks are present, which are arranged spaced apart from one another in the circumferential direction of the locking sleeve 210.

Claims (15)

1. A hand-held power tool system (190) having a hand-held power tool (100), in particular a drill hammer, and having a tool attachment (150) which can be releasably locked on the hand-held power tool (100) for an attachment operating mode, wherein the hand-held power tool (100) has a locking device (280) having a machine-side locking sleeve (210) at least for locking the tool attachment (150) on a machine-side tool receptacle (222) of the hand-held power tool (100), and wherein the tool attachment (150) has a locking unit (290) having an attachment-side locking sleeve (250) and at least one locking element (263) for locking an application tool (140) on an attachment-side tool receptacle (261) of the tool attachment (150), characterized in that the accessory-side locking sleeve (250) is movable on the accessory-side tool receptacle (261) in a longitudinal direction (199) of the accessory-side tool receptacle (261) along an associated actuation path (402), wherein the associated actuation path (402) is divided into a first path section and a second path section (302; 401), and wherein the first path section (302) only enables partial release of the at least one locking element (263) which is latched by the accessory-side locking sleeve (250) in the accessory operating mode, and the second path section (401) enables complete release of the at least one locking element (263) which is latched by the accessory-side locking sleeve (250) in the accessory operating mode.
2. The hand-held power tool system according to claim 1, characterized in that the machine-side locking sleeve (210) and the attachment-side locking sleeve (250) are kinematically coupled to one another in an attachment operating mode.
3. Hand-held power tool system according to claim 2, characterised in that the attachment-side locking sleeve (250) has a driver (259) and the machine-side locking sleeve (210) has a driver element (219), wherein, in an attachment operating mode, the machine-side locking sleeve (210) and the attachment-side locking sleeve (250) are kinematically coupled to one another by means of the driver (259) and the driver element (219).
4. The hand-held power tool system according to one of the preceding claims, wherein in an accessory operating mode a movement of the accessory-side locking sleeve (250) along the second path section (401) causes a movement of the machine-side locking sleeve (210) along the machine-side tool receptacle (222).
5. Hand-held power tool system according to claims 3 and 4, characterised in that the driver (259) loads the driver element (219) in order to move the machine-side locking sleeve (210) in the event of a movement of the attachment-side locking sleeve (250) along the second path section (401).
6. The hand-held power tool system according to one of the preceding claims, wherein in the accessory operating mode a first loading force is required for moving the accessory-side locking sleeve (250) along the first path section (302) and a second loading force is required for moving the accessory-side locking sleeve (250) along the second path section (401), wherein the second loading force is smaller than the first loading force.
7. Hand-held power tool system according to claim 6, characterized in that the accessory-side locking sleeve (250) is loaded by the associated spring element (255) in the first locking position, wherein a first loading force for moving the accessory-side locking sleeve (250) along the first path section (302) needs to be exerted on the accessory-side locking sleeve (250) against the spring force exerted by the associated spring element (255).
8. The hand-held power tool system according to claim 7, characterized in that the machine-side locking sleeve (210) is loaded by the associated spring element (208) in the second locking position, wherein a second loading force for moving the attachment-side locking sleeve (250) along the second path section (401) needs to be exerted on the attachment-side locking sleeve (250) at least partially against the spring force exerted by the spring element (208) associated with the machine-side locking sleeve (210).
9. The hand-held power tool system according to one of the preceding claims, characterized in that the attachment-side locking sleeve (250) has an internal power ramp (256) which only enables partial release of the at least one locking element (263) which is latched by the attachment-side locking sleeve (250) in the attachment operating mode if the attachment-side locking sleeve (250) is moved along the first path section (302).
10. The hand-held power tool system according to one of the preceding claims, characterized in that the at least one locking element (263) has at least one detent ball.
11. A tool attachment (150) having a tool receiving portion (261) and a locking unit (290), the locking unit has a locking sleeve (250) and at least one locking element (263) for locking the application tool (140) on the tool receptacle (261), characterized in that the locking sleeve (250) is displaceable on the tool receptacle (261) in the longitudinal direction (199) of the tool receptacle (261) along an associated actuating path (402), wherein the associated steering path (402) is divided into a first path section and a second path section (302; 401), and wherein the first path section (302) only enables partial release of the at least one locking element (263) which is latched by the locking sleeve (250) in the locking mode, and the second path section (401) enables a complete release of the at least one locking element (263) which is latched by the locking sleeve (250) in the locking mode.
12. The tool attachment according to claim 11, characterized in that the locking sleeve (250) has an internal assist ramp (256) which, in the event of a movement of the locking sleeve (250) along the first path section (302), only enables a partial release of the at least one locking element (263) which is latched by the locking sleeve (250) in the locking mode.
13. Tool attachment according to claim 11 or 12, characterized in that the at least one locking element (263) has at least one detent ball.
14. Tool attachment according to one of claims 11 to 13, which is provided for releasable locking on a hand-held power tool (100), in particular a drill hammer, in an attachment operating mode, wherein the hand-held power tool (100) has a locking device (280), wherein the locking device (280) has a machine-side locking sleeve (210), characterized in that the locking sleeve (250) of the tool attachment (150) has a driver (259) for kinematic coupling with a driver element (219) of the machine-side locking sleeve (210) in the attachment operating mode.
15. The tool attachment according to claim 14, characterized in that the driver (259) is configured for loading the driver element (219) for moving the machine-side locking sleeve (210) in the attachment operating mode with the locking sleeve (250) of the tool attachment (150) being moved along the second path section (401).
CN202011509715.1A 2019-12-20 2020-12-18 Hand-held power tool system and tool attachment for a hand-held power tool Pending CN113001476A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019220315.9 2019-12-20
DE102019220315.9A DE102019220315A1 (en) 2019-12-20 2019-12-20 Hand machine tool system with a hand machine tool and a tool attachment, as well as a tool attachment for a hand machine tool

Publications (1)

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CN113001476A true CN113001476A (en) 2021-06-22

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CN202011509715.1A Pending CN113001476A (en) 2019-12-20 2020-12-18 Hand-held power tool system and tool attachment for a hand-held power tool

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DE (1) DE102019220315A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9305463U1 (en) * 1993-04-10 1993-06-24 Crones & Co GmbH, 8800 Ansbach Tool holder for hand impact tools, especially chisel hammers
DE102017209924A1 (en) * 2017-06-13 2018-12-13 Robert Bosch Gmbh Hand tool and tool attachment

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