EP3880407A1 - Verbindungsanordnung für eine handgeführte werkzeugmaschine und handgeführte werkzeugmaschine - Google Patents
Verbindungsanordnung für eine handgeführte werkzeugmaschine und handgeführte werkzeugmaschineInfo
- Publication number
- EP3880407A1 EP3880407A1 EP20749892.4A EP20749892A EP3880407A1 EP 3880407 A1 EP3880407 A1 EP 3880407A1 EP 20749892 A EP20749892 A EP 20749892A EP 3880407 A1 EP3880407 A1 EP 3880407A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- extension piece
- clamping
- connecting part
- counter
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- 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
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/34—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
- B24B7/182—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings
- B24B7/184—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings pole sanders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/59—Manually releaseable latch type
- Y10T403/591—Manually releaseable latch type having operating mechanism
- Y10T403/595—Lever
Definitions
- the invention relates to a connection arrangement with the features of the preamble of claim 1.
- the invention relates to a machine tool with the features of the independent claim.
- the invention relates to an extension piece with the features of the further independent claim.
- Machine tools are known from the prior art, for example from DE 102007 012 394 A1, which goes back to the applicant. Inside is a hand-held machine tool described with a handle bar which has several handle bar parts which can be connected to one another by means of a tensioning device. In this way, the length of the handle bar can be changed to adapt the machine to the job and the handle bar can be dismantled for transport purposes. This favors the handling of the machine tool.
- the invention is based on the object of facilitating the handling of a hand-held machine tool with simple structural means, in particular its assembly and disassembly. It is also desirable to keep the effort for readjustments as low as possible.
- the connecting arrangement is characterized in that within the cross section of the connecting section A mechanical clamping element (for example a clamping claw) is arranged on a first of the connecting parts and a mechanical counter-element (for example a hook) is arranged within the cross section of the connecting section of the other connecting part.
- An actuatable tensioning device which acts on the tensioning element is provided on the connecting section of the first connecting part.
- the tensioning element and the counter-element are designed in such a way that they can be brought into engagement with one another when the connecting sections are plugged together. By actuating the tensioning device, the connecting parts can be braced against one another when the tensioning element engages with the counter-element.
- clamping connection clamping element and counter-element
- clamping connection is not arranged outside, but within the cross section of the connecting parts (internal clamping connection). This favors handling and transport of the connection arrangement or the machine tool.
- the internal arrangement of the clamping element and counter element can reduce the contamination and wear of these components.
- the tensioning element and the counter-element can each have a hook-shaped profile.
- connection arrangement can be, for example, a hand-held machine tool.
- connection arrangement can be a Act a connecting line, for example a hose or a pipe.
- the connecting parts can, for example, have a pipe section, a connecting section being formed at one end or at both ends of the pipe section.
- the further machine module can be a handle part.
- the handle part can have display elements and / or operating elements for monitoring or operating the machine tool.
- the (inner) cross section of the connecting parts can be, for example, an interior space.
- connection arrangement can thus be assembled or disassembled in a simple manner.
- connection arrangement can be mounted for use with the machine tool and dismantled for transport or storage.
- the clamping device can have a manually operable clamping lever as the actuating device and be designed in such a way that only this clamping lever has to be actuated to clamp the connecting parts (clamping two adjacent connecting parts) by means of the clamping element and counter-element.
- the clamping element can be rotatably mounted on the clamping device and preloaded relative to the counter-element, so that the clamping element and the counter-element when plugged together
- Connecting sections automatically come into engagement with one another.
- the clamping element and the counter-element automatically come into engagement with one another when they are plugged together, preferably with one another.
- the connecting parts are thus secured to one another, even if they are not yet clamped by means of the clamping device. This increases the safety during handling, since the risk of damage and also the risk of injury are reduced.
- a spring element which acts on the tensioning element, for example, can be provided for pretensioning.
- the spring element can be a compression spring.
- the tensioning element on the first connecting part and / or the counter-element on the second connecting part can be fixed by means of a transverse bolt, the transverse bolt protruding transversely or obliquely to the longitudinal axis through the cross section of the respective connecting part and with its ends in one in the wall of the connecting part trained recess or engages in a passage formed in the wall of the connecting part.
- a stable connection of the tensioning element or counter-element to the respective connecting part is thus created.
- the transverse bolt enables reliable power transmission even with comparatively soft materials for the connecting part.
- the connecting parts can be made of aluminum.
- the cross bolt can be designed as a (tubular) sleeve.
- the cross bolt can be aligned radially in the connecting part.
- the tensioning device can expediently have a bearing part which loops around the transverse bolt of the first connecting part and defines a bearing point spaced apart from the transverse bolt and having a bearing axis oriented obliquely or orthogonally to the central longitudinal axis of the transverse bolt.
- the bearing part can be designed as a bearing plate.
- the bearing plate can preferably have a U-shaped cross section.
- the clamping lever can be pivotably mounted at the bearing point of the bearing part by means of a lever shaft, the clamping element being coupled to the lever shaft by means of an eccentric.
- a manually operable button can be provided on the connecting section of the first connecting part, which acts on the tensioning element, whereby the tensioning element and the counter-element (when the tensioning device is released) can be disengaged by operating the button. In this way, the risk of injury to the user and the
- the button has to be pressed in order to disengage the clamping element and counter-element. In the event of (accidental) actuation of the clamping lever (loosening of the clamping device), unintentional loosening of the connecting parts can be prevented, since the button must be actuated for this.
- the tensioning device can be designed in such a way that the tensioning lever can be moved further in the opening direction after the tensioning element has been released in order to disengage the tensioning element and the counter-element (when the tensioning device is released). In this way, too, unintentional loosening of the connecting parts can be prevented.
- Such a configuration requires comparatively few components or operating elements.
- the counter element can be displaceably guided on the second connecting part and by interposing a spring on the second connecting part or on the connecting section of the second connecting part be stored.
- the direction of force of the spring is aligned in or parallel to the longitudinal direction of the connecting part in question.
- the spring can, for example, be positioned between a shoulder of the counter element and the transverse bolt.
- the spring can be a compression spring, for example.
- the counter-element can expediently be coupled to a holding section or merge into it, the holding section having an angled section and wherein the spring can be arranged between the angled section and the transverse bolt on the second connecting part.
- a projection can be formed on the connecting section of the first connecting part which, when the tensioning lever is in the position in which the tensioning element is tensioned, adjoins a free end of the tensioning lever, in particular continues its contour.
- the projection can be designed as a nose. The The free end of the clamping lever faces away from the bearing axis.
- an electrical plug connector and / or a connection opening to a flow channel formed in the respective connection part can be arranged on the connection sections, the plug connector and / or the connection opening being arranged within the cross section of the respective connection section.
- the connector can be designed as a multi-pole connector, for example with two or more poles (multi-core).
- the plug connector, the tensioning element or the counter element and / or the connection opening can be arranged flush or offset inward relative to the end face of the respective connection section. In other words, these do not protrude from the relevant connecting section at the end. This reduces the risk of injury or wear and tear. In addition, this offers a certain protection against environmental influences.
- At least one of the plug connectors can each by means of an elastic element be mounted on the connecting section or on the connecting part, in particular in such a way that the connector or connectors is or are movable relative to the connecting section or to the connecting part.
- the connectors thus have a certain amount of play so that the connecting parts can always be plugged together.
- the plug connector can be reset to a, preferably central, starting position by the elastic element.
- one or more dust removal openings can be formed in the plug connector, in particular adjacent to its plug contacts. This reduces the risk of dust deposits affecting the function of the electrical connectors.
- the dust discharge openings can by means of a
- the flow connection can be flow-connected to the flow channel (suction channel) formed in the relevant connecting part.
- the connecting section of the first connecting part can advantageously have a collar protruding parallel to the longitudinal axis, with which the connecting section of the first connecting part engages around the connecting section of the other connecting part when it is plugged together. Plugging together is thus simplified, since the connecting sections are guided through the collar.
- the interfaces of the connecting sections can be aligned with one another. The federal government contributes to the protection of the interfaces of the
- the collar is preferably designed to be completely circumferential.
- a further connecting part can be provided which has a connecting section at both ends in such a way that the further connecting part can be inserted as an extension piece between the first and the second connecting part and can be detachably connected to them.
- the connecting arrangement or the hand-held machine tool can be adjusted in length if necessary.
- the object mentioned at the beginning is also achieved by a, preferably hand-operated, machine tool with the features of the independent claim.
- the machine tool has a machining head, a further machine module and a connection arrangement for connecting the machining head and the machine module, as described above.
- the hand-held processing machine can be a surface processing machine, for example a long-neck sander.
- the processing head can, for example, as Be designed grinding head.
- the further machine module can be a handle part, for example.
- connection arrangement With regard to the advantages that can be achieved with the machine tool, reference is made to the relevant statements on the connection arrangement.
- the measures described in connection with the connection arrangement can be used to further develop the machine tool.
- extension piece for a connecting arrangement with the features of the further independent claim.
- the extension piece represents a further extension part for a connection arrangement, as described above.
- the extension piece in particular has a connecting section at both ends, so that the extension piece can be inserted between the two connecting parts and connected to them for the purpose of lengthening.
- the extension piece for a connection arrangement can be used to connect a machining head and a further machine module of a hand-held machine tool.
- the extension piece has a connecting section at both ends, via which the extension piece can be connected to a connecting part of the connecting arrangement, wherein the connecting sections of the extension piece each delimit an inner cross section (for example inner space) towards the outside.
- the extension piece is characterized in that a mechanical clamping element (e.g. clamping claw) is arranged within the cross section of the first connection section and a mechanical counter element (e.g. hook) is arranged within the cross section of the second connection section, an actuatable clamping device being provided on the first connection section that acts on the clamping element.
- the extension piece as a (further) connecting part can be connected to a connecting part just as advantageously as the connecting parts of the connecting arrangement described above.
- the tensioning element can be designed in such a way that it can be brought into engagement with a mating element of the connecting section when the first connecting section is plugged together with a connecting section of a (further) connecting part of the connecting arrangement, the extension piece and the connecting part against one another by actuating the tensioning device can be braced when the tensioning element is in engagement with the counter-element. This makes it easier to connect the extension piece to other connecting parts.
- the connecting sections of the extension piece can expediently be designed to be complementary (partially complementary or fully complementary) to one another. With others Words, the connecting sections of the extension piece could be plugged together. The extension piece can thus be inserted in a simple manner between the further connecting parts of the connecting arrangement. Plugging together several extension pieces to extend the connecting arrangement is also conceivable.
- the tensioning device can have a manually operable tensioning lever and be designed in such a way that for tensioning the
- the tensioning element can be rotatably mounted on the tensioning device and pretensioned so that the tensioning element automatically engages with a mating element of the connecting part when the extension piece is plugged together with a connecting part of the connecting arrangement.
- the clamping element and the counter element can automatically come into engagement with one another when they are plugged together, in particular in engagement with one another.
- the extension piece and the connecting parts are thus secured to one another, even if they are not yet clamped by means of the clamping device. This increases the safety during handling, since the risk of damage and also the risk of injury are reduced.
- a spring element can be provided, which for example the clamping element acts.
- the spring element can be a compression spring.
- the tensioning element and / or the counter element can each by means of a cross bolt on
- Extension piece be set, the cross bolt protruding transversely or obliquely to the longitudinal axis through the cross section of the extension piece and with its ends in a recess formed in the wall of the extension piece or in one in the wall of the
- Extension piece engages formed passage.
- the transverse bolt enables reliable power transmission even with comparatively soft materials for the extension piece.
- the extension piece can be made of aluminum.
- the cross bolt can be designed as a (tubular) sleeve.
- the cross bolt can be aligned radially in the extension piece.
- the clamping device can have a bearing part which wraps around the transverse bolt of the extension piece and a bearing point spaced from the transverse bolt with a bearing
- Central longitudinal axis of the transverse bolt is defined obliquely or orthogonally oriented bearing axis.
- a bearing axis is implemented in a space-saving and favorable manner with regard to the force profile.
- the bearing part can be designed as a bearing plate be.
- the bearing plate can preferably have a U-shaped cross section.
- the clamping lever can be pivotably mounted at the bearing point of the bearing part by means of a lever shaft, the clamping element being coupled to the lever shaft by means of an eccentric.
- a manually operable button can be provided on the connecting section of the extension piece, which acts on the tensioning element, whereby the tensioning element (with the tensioning device released) can be disengaged from the counter-element of a connecting part of the connecting arrangement by operating the button.
- the button has to be pressed in order to disengage the clamping element and counter-element. In the event of (accidental) actuation of the clamping lever (loosening of the clamping device), unintentional loosening of the extension piece can be prevented, since the button must be actuated for this.
- the tensioning device can be designed such that the tensioning lever can be moved further in the opening direction after the tensioning element has been relaxed in order to disengage the tensioning element from the Counter element of a connecting part of the
- the counter-element can be displaceably guided on the extension piece and can be mounted on the extension piece or on the second connection section of the extension piece by interposing a spring.
- the direction of force of the spring is aligned in or parallel to the longitudinal direction of the extension piece.
- the spring can, for example, be positioned between a shoulder of the counter element and the transverse bolt.
- the spring can be a compression spring, for example.
- the counter-element can expediently be coupled to a holding section or merge into it, the holding section having an angled section and wherein the spring can be arranged between the angled section and the transverse bolt on the second connecting section of the extension piece.
- an electrical connector and / or a connection opening to a flow channel formed in the extension piece can be arranged on the connection sections, the connector and / or the connection opening being arranged within the cross section of the respective connection section. In this way, simple coupling of the interfaces is made possible, since the extension piece only has to be plugged together with one or two connecting parts. This facilitates handling and contributes to a space-saving design.
- the arrangement within the cross-section reduces contamination and wear.
- connection openings on both sides of the extension piece are flow-connected through the flow channel.
- the electrical plug-in connectors on both sides are electrically connected by means of one or more electrical lines.
- the electrical lines are routed in particular in the interior of the extension piece, for example in a section of the extension piece that is separate from the flow channel.
- At least one of the plug connectors can each be supported by means of an elastic element on the connecting section or on the extension piece, in particular in such a way that the plug connector is movable relative to the connecting section or the extension piece.
- the connectors thus have a game so that pipe parts can always be plugged together. It is conceivable that the connector through the elastic element is resettable in a, preferably central, starting position.
- connection arrangement can be used for the further configuration of the connecting sections of the extension piece.
- Fig.l an embodiment of a hand-held
- FIG. 2 shows the machine tool from FIG. 1, wherein in the
- Connection arrangement is used as a further connecting part, an extension piece
- FIG. 3 shows two plugged-together connecting sections of two adjacent connecting parts according to detail A in FIG. 2 in an enlarged view
- FIG. 4 shows the connecting sections from FIG. 3 in a non-plugged-together state in a perspective top view
- 5 shows the connecting sections from FIG. 3 with a view into the interior of the connecting sections or the respective connecting parts
- FIG. 6 shows the connecting sections or connecting parts from FIG. 3 in a partial longitudinal section
- FIG. 7 shows the connecting sections or connecting parts from FIG. 3 in a longitudinal section, the section plane being arranged parallel to the wall, which divides the cross section of the connecting parts into two separate sections;
- FIG. 8 shows a sectional illustration similar to FIG. 7, the sectional plane being arranged in such a way that it intersects the transverse bolts;
- FIG. 9 shows the plugged-together connecting sections according to FIG. 3 in a longitudinal section, the sectional plane intersecting the clamping element and the counter-element;
- FIG. 10 clamping device, clamping element and counter element of the connection arrangement according to FIG. 3 in isolation;
- FIG.ll shows the connecting sections according to Figure 3 in the unmated state in a longitudinal section, the cutting plane intersects the clamping element and the counter-element;
- FIG. 12 shows the plugged-together connecting sections according to FIG. 3 in a side view;
- FIG. 14 shows the extension piece of the connection arrangement from FIG. 2 in isolation in a perspective view
- FIG. 15 shows the extension piece according to FIG. 14 with a view of one of the connecting sections
- FIG. 16 shows the extension piece according to FIG. 14 with a view of the other connecting section
- FIG. 17 shows the extension piece according to FIG. 14 in a half section.
- FIG. 1 shows a hand-held machine tool which is designated as a whole by the reference numeral 200 (hereinafter "machine tool”).
- the machine tool 200 is designed here as a surface processing machine 200 in the form of a long-neck grinder, for example.
- the machine tool 200 has a machining head 202 in the form of a grinding head 202.
- the machine tool 200 has a further machine module 204 in FIG Form of a handle part 204.
- the machine tool 200 also has a connection arrangement 10 for connecting the grinding head 202 and the handle part 204.
- a hose section 206 is arranged on the grinding head 202, which is flow-connected at one end to a suction point (not shown) located on the grinding head 202.
- the hose section 206 is flow-connected at the other end to a hose outlet 208 arranged on the handle part 204, specifically by means of the connection arrangement 10.
- a hose e.g. a suction hose
- Connection arrangement 10 (flow channel or suction channel) and the hose outlet 208 are discharged.
- the grinding head 202 there are also current-carrying lines (provision of electrical energy; without reference symbols) and control lines (provision of control signals; without reference symbols).
- the lines or control lines are electrically or electronically connected at one end to components arranged on the grinding head 202. At the other end, these components are electrically or electronically connected to control and supply devices arranged on the handle part 204 (without reference symbols), specifically via the connection arrangement 10 (electrical plug connection).
- the handle portion 204 can be a Have handle portion 210, on which the handle part 204 can be gripped or grasped by a user by hand.
- the connecting arrangement 10 can have a connecting part 14 and a further connecting part 18, which can be connected to and detached from one another (see FIG.
- the connecting parts 14, 18 can be detachably connected to one another.
- the connecting part 18 is formed on the handle part 204 and has a
- connection section which corresponds to the connection section 22 described below (see FIG. 3f.).
- the handle part 204 or its connecting section can be made of plastic, for example.
- the connecting part 14 has at one end a connecting section 20, which is described below (cf. FIG. 3 f.), which is formed with that formed on the handle part 204
- connection section (without reference numerals) can be plugged together.
- the connecting part 14 is connected to a connecting piece 212 which carries the grinding head 202.
- connection arrangement 10 can have at least one further connection part 16, which can be inserted between the two other connection parts 14, 18 as an extension piece 16 (see FIG.
- the extension piece 16 has a connecting section 20 at one end and a connecting section 20 at the other end Connection portion 22, as will be described further below.
- the connector assembly 10 is described in greater detail below with reference to FIG.
- Connecting section 20 of connecting part 14 and connecting section 22 of connecting part 16 (see marking "A" in FIG. 2 and FIG. 3f.).
- a corresponding connecting arrangement 10 is located between the connecting part 14 and the connecting part 18 or between the connecting part 16 and the connecting part 18 (cf. marking "A '", only indicated in FIG. 2).
- the connection arrangement 10 forms a total of one
- connection line off for example a connection pipe.
- the connecting parts 14, 16 each have a pipe section, for example a section of an aluminum pipe, on each of which a connecting section 20, 22 is formed.
- connection arrangement 10 serves to connect the grinding head 202 and the handle part 204 of the hand-held machine tool 200 in the form of a long-neck sander.
- the connecting arrangement 10 has (at least) two connecting parts 14, 16 following one another along a longitudinal axis 12 (see FIG. 3f.).
- the connecting parts 14, 16 can be detachably connected to one another.
- the connecting part 14 has a connecting section 20.
- the connecting part 16 has a
- Connecting section 22 The connecting parts 14, 16 can be connected to one another via the connecting sections 20, 22 by plugging the connecting sections 20, 22 together.
- the connecting sections 20, 22 each delimit an inner cross-section 24, 26 towards the outside (see, inter alia, FIGS. 5 and 6).
- the connecting parts 14, 16 each have three different interfaces which are each arranged in the inner cross section 24, 26 or in the interior 24, 26 of the relevant connecting section 20, 22.
- the interfaces are an electrical plug connection, a mechanical clamping connection and a flow connection.
- the clamping connection is spatially arranged between the plug connection and the flow connection and is located approximately in the center of the connection sections.
- the connecting part 14 has in the inner cross section 24 an electrical plug connector 28 which forms a component of the electrical plug connection.
- the plug connector 28 can, for example, be designed as a socket (female part).
- the connecting part 14 has a counter element 32 which forms a component of the mechanical tensioning connection.
- the counter element 32 can, for example, be designed as a hook-shaped element or hook 32.
- the connecting part 14 also has a Connection opening 36 to a flow channel 40 formed in the connecting part 14 (suction channel), whereby part of the flow connection is formed.
- the connecting part 16 has an electrical plug connector 30 in the inner cross section 26, which forms a component of the electrical plug connection.
- the plug connector 30 can, for example, be designed as a plug (male part).
- the connecting part 16 has a clamping element 34 which forms a component of the mechanical clamping connection.
- the clamping element 34 can, for example, be designed as a claw-shaped element or clamping claw 34.
- the tensioning element 34 can be actuated by means of an actuation device in the form of a tensioning lever 80.
- the connecting part 16 also has a connection opening 38 to a flow channel 42 formed in the connecting part 14, as a result of which part of the flow connection is formed.
- the connecting part 14 is described in more detail below.
- the connecting part 14 has a pipe section, the connecting section 20 being arranged at one of its ends.
- the connecting section 20 has a casing 44 which encloses the connecting part 14 in sections (at its free end) (see FIGS. 5 and 6).
- the casing 44 On the front side, the casing 44 has three passages (without reference symbols) for the electrical plug connector 28, the counter element 32 and the connection opening 36.
- the casing 44 has an outer surface 54 which tapers towards the outside, ie tapering towards the free end, in particular conically tapering.
- the casing 44 has a support section 56 covering the end face of the connecting part 14 (end face end of the pipe section).
- connection sections 14, 16 When the connection parts 14, 16 are plugged together, the support section 56 can come into contact with a support section 58 of the connection part 16.
- the casing 44 At its end facing away from the free end of the connecting part 14, the casing 44 has a radially protruding shoulder 60.
- the shoulder 60 can limit the plugging together of the connecting sections 20, 22 in the insertion direction. Independently of this, the shoulder 60 realizes a smooth transition of the contour from the casing 44 to the pipe section of the connecting part 14.
- a wall 66 extending parallel to or along the longitudinal axis 12 is provided, which divides the (inner) cross section of the connecting part 14 into two separate sections 70, 72.
- the flow channel 40 is arranged in the first section 70.
- the counter element 32 and the electrical connector 28 are arranged.
- the plug connector 28 is mounted on the connecting part 14 by means of an elastic element 64 (see FIG. 13). Due to the elastic element 64, the plug connector 28 is relative to the connecting section 20 or movable to the connecting part 14. By means of the elastic element 64, the plug connector 28 can be reset into a, preferably central, starting position. If the plug connector 28 has rotated off-center, it can be reset by the elastic element 64.
- dust discharge openings can be formed on the plug connector 28 (not shown). These reduce dust deposits on the plug connector 28. The dust discharge openings can be in flow connection with the flow channel 40.
- the counter element 32 is fixed to the connecting part 14 by means of a transverse bolt 84 (see, inter alia, FIGS. 6 to 10 and 13).
- the cross bolt 84 protrudes transversely to the longitudinal axis 12 through the cross section 24 of the connecting part 14. With its ends, the cross section 84 engages in a passage 88 formed in the wall of the connecting part 14 (wall of the pipe section) (see FIG. 8).
- the counter element 32 is displaceably guided on the connecting part 14 and is mounted displaceably on the connecting part 14 by the interposition of a spring 106.
- the (hook-shaped) counter element 32 merges into a holding section 108, the holding section 108 having an angled section 110 (see, inter alia, FIGS. 7 and 8).
- the spring 106 is arranged between the angled section 110 and the transverse bolt 84 (see FIG. 8).
- the spring 106 is fastened to the angled section 110 by means of a screw 11, with a guide bushing on the screw 113 is screwed, which guides the spring 106.
- the spring 106 is designed in particular as a compression spring 106.
- the connecting part 16 is described in more detail below. As already indicated, the connecting part 16 has a pipe section, the connecting section 22 being arranged at one of its ends.
- the connecting section 22 has a casing 46 which encloses the connecting part 16 in sections (at its free end shown here) (see FIG. 4f.).
- the casing 46 has a plurality of passages (without reference symbols) for the electrical plug connector 30, the clamping element 34 and the connection opening 38.
- the casing 46 has a collar 50 protruding parallel to the longitudinal axis 12 (see FIG. 6), with which the connecting section 22 engages around the opposite connecting section 20 when the connecting parts 14, 16 are plugged together.
- the collar 50 has an outwardly widening, in particular conically widening, inner surface 52.
- the inner surface 52 is designed in particular to correspond to the conically tapering outer surface 44 of the connecting section 20.
- the connecting section 22 has a support section 58 which covers the end face of the connecting part 16 (end face of the pipe section). The bearing portion 58 can come into contact with the bearing portion 56 of the connecting portion 20 when the connecting parts 14, 16 are plugged together.
- a projection 112 which can be designed as a nose, is provided on the casing 46 on the connecting section 22.
- the projection 112 is designed in such a way that, when the tensioning lever 80 is in the position in which the tensioning element 34 is tensioned, it is connected to a free end of the tensioning lever 80.
- the projection 112 continues the contour of the tensioning lever 80 (see in particular FIG. 6).
- An actuatable tensioning device 82 is provided on the connecting section 22 of the connecting part 16 and acts on the tensioning element 34 (see in particular FIG. 7).
- the tensioning element 34 and the counter element 32 are designed such that they can be brought into engagement with one another when the connecting sections 20, 22 are plugged together.
- the tensioning device 82 By actuating the tensioning device 82, the connecting parts 14, 16 can be braced against one another when the tensioning element 34 engages with the counter-element 32.
- the tensioning device 82 can be operated by means of the manually operated tensioning lever 80.
- the clamping device 82 is designed in such a way that only the clamping lever 80 has to be actuated to clamp the connecting parts 14, 16 by means of the clamping element 34 and counter element 32
- the tensioning element 34 is rotatably mounted on the tensioning device 82 and is pretensioned relative to the counter element 32. As a result, the clamping element 34 and the counter element 32 come into engagement with one another when the connecting sections 20, 22 are plugged together.
- a spring 92 which acts on the tensioning element 34 and is supported, for example, on the inner wall of the pipe section of the connecting part 16 (see in particular FIG. 8).
- the spring 92 is, in particular, a compression spring 92.
- the tensioning element 34 is fixed on the connecting part 16 by means of a transverse bolt 86.
- the transverse bolt 86 extends transversely to the longitudinal axis 12 through the cross section 26 of the connecting part 16. With its ends, the transverse bolt 86 engages in a passage 90 formed in the wall of the connecting part 16 (see FIG. 8).
- the clamping device 82 has a bearing part 94 which is designed as a bearing plate with a U-shaped cross section (see, inter alia, FIGS. 7 to 10).
- the bearing part 94 loops around the transverse bolt 86 and defines a bearing point 96 which is spaced apart from the transverse bolt 86 and has a bearing axis 98 oriented orthogonally to the central longitudinal axis of the transverse bolt 86 (see in particular FIG. 10).
- the clamping lever 80 is pivotably mounted on the bearing point 96 of the bearing part 94 by means of a lever shaft 100, the clamping element 34 being coupled to the lever shaft 100 by means of an eccentric 102 (see in particular FIGS. 8 to 10).
- the tensioning device 82 can be designed in such a way that the tensioning lever 80 can be moved further in the opening direction after the tensioning element 34 has been relaxed (for example, counterclockwise in FIG. 4) in order to disengage the tensioning element 34 and the counter element 32 so that the connecting parts 14 , 16 can be detached from each other.
- a button 104 that can be actuated by hand (for example by finger) can be provided on the connecting section 22 of the connecting part 16 and that acts on the tensioning element 34, whereby the tensioning element 34 and the counter element 32 (when the tensioning device 82 is released) by actuation of the button 104 except Can be brought into engagement (see Figures 9, 11 and 12).
- a wall 68 extending parallel to or along the longitudinal axis 12 is provided, which divides the (inner) cross section of the connecting part 16 into two separate sections 74, 76.
- the flow channel 42 is arranged in the first section 74.
- the clamping element 34 or the clamping device 82 and the electrical connector 30 are arranged in the further section 76 (see FIG. 6).
- the plug connector 30 of the connecting part 16 can optionally be mounted on the connecting part 16 by means of an elastic element.
- the plug connector 30 is thus movable relative to the connecting part 16 (not shown).
- the elastic element allows the connector 30 to be preferably the central, starting position can be reset. If the connector 30 should have rotated off-center, a return to the starting position can take place by means of the elastic element.
- one or more dust removal openings can be formed in the plug connector 30, in particular adjacent to its plug contacts.
- the dust discharge openings can optionally be flow-connected to the flow channel 42 formed in the connecting part 16.
- FIGS. 14 to 17 show the connecting part 16 designed as an extension piece on its own.
- the extension piece 16 extends along a longitudinal direction 12.
- the extension piece 16 has a pipe section which has the connecting section 22 at one end (left in FIG. 14) and the connecting section 20 at the other end (right in FIG. 14).
- the connecting section 22 of the extension piece 16 is designed in accordance with the connecting section 22 of the connecting part 16 described above (identical or functionally identical elements are provided with identical reference symbols). To avoid repetition, please refer to the above explanations for
- connection section 20 of the extension piece 16 corresponds to the connecting section 20 described above of the connecting part 14 (identical or functionally identical elements are provided with identical reference numerals). To avoid repetition, reference is therefore made to the above statements on the connection section 20 of the connection part 14.
- a wall 68 extending parallel to or along the longitudinal axis 12 is provided, which divides the cross section of the extension piece 16 into two separate sections 74, 76.
- the flow channel 42 is arranged in the first section 74.
- the flow channel 74 extends between the connection section 22 and the connection section 20 of the extension piece 16.
- the connection openings 36 and 38 both open into the flow channel 42.
- In the further section 76 are on the connection section
- the electrical connector 28 and the counter element 32 and on the connecting section 22 the clamping element 34 or the clamping device 82 and the electrical connector 30 are arranged.
- the electrical connector 28 and the electrical connector 30 are electrically or electronically connected to one another by means of electrical or electronic lines routed through the further section 76.
- power and / or Control signals are transmitted through the extension piece 16.
- connection arrangement 10 or a hand-held machine tool equipped with the connection arrangement 10 works as follows (explained with reference to the connection parts 14 and 16):
- the connecting parts 14, 16 are initially positioned with respect to one another in such a way that the connecting sections 20, 22 are aligned with one another in such a way that the connecting sections 20, 22 can be plugged together (see, for example, FIG. 4, 6 or 11).
- the connecting sections 20, 22 are then plugged together and the clamping lever 80 can be closed (see, for example, FIG. 3 or 9).
- the clamping element 34 and the counter-element 32 come into engagement with one another (grip behind), since the clamping element 34 is pretensioned relative to the counter-element 32 by the spring 92 (see, for example, FIG. 8).
- the plug connectors 28, 30 are also connected to one another when they are plugged together. If an end position is reached when plugging together, for example when the support section 56 of the connection section 20 comes into contact with the support section 58 of the connection section 22, the connection openings 36, 38 are also aligned with one another, so that the flow channel 40 and the flow channel 42 are flow-connected to one another are.
- the clamping lever 80 By pivoting the clamping lever 80, the clamping device 82 is actuated, which acts on the clamping element 34, which engages behind the counter-element 32 (see FIG. 9).
- the tensioning element 34 is thereby pulled inward (axially) along the longitudinal direction 12 by means of the eccentric 102 in the connecting part 16. Because the connecting parts 14, 16 abut one another at the connecting sections 20, 22, for example by means of the task sections 56, 58, and the tensioning element 34 applies a tensile force to the counter-element 32, the connecting parts 14, 16 are clamped together.
- an electrical plug connection is established between the plug connectors 28, 30.
- a mechanical clamping connection is established by the counter element 32 and the clamping element 34.
- a flow connection between the connecting parts 14, 16 is also established through the mutually aligned connection openings 36, 38.
- the tensioning lever 80 In order to disengage the tensioning element 34 and the counter-element 32, the tensioning lever 80 must be pivoted further in the opening direction, or alternatively the button 104 can be actuated. As a result, the clamping element 34 is pivoted in such a way that it is out of engagement with the counter element 32. The mechanical clamping connection is thus released.
- the connecting parts 14, 16 can then be separated from one another or pulled apart. By separating the electrical plug connectors 28, 20 and the connection openings 26, 38, the electrical plug connection and the flow connection between the connecting parts 14, 16 are also released.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Portable Power Tools In General (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019129824.5A DE102019129824A1 (de) | 2019-11-05 | 2019-11-05 | Verbindungsanordnung für eine handgeführte Werkzeugmaschine und handgeführte Werkzeugmaschine |
| PCT/EP2020/071600 WO2021089207A1 (de) | 2019-11-05 | 2020-07-30 | Verbindungsanordnung für eine handgeführte werkzeugmaschine und handgeführte werkzeugmaschine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3880407A1 true EP3880407A1 (de) | 2021-09-22 |
| EP3880407B1 EP3880407B1 (de) | 2022-07-06 |
| EP3880407B9 EP3880407B9 (de) | 2023-04-19 |
Family
ID=71894837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20749892.4A Active EP3880407B9 (de) | 2019-11-05 | 2020-07-30 | Verbindungsanordnung für eine handgeführte werkzeugmaschine und handgeführte werkzeugmaschine |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US12576503B2 (de) |
| EP (1) | EP3880407B9 (de) |
| JP (1) | JP7353371B2 (de) |
| CN (1) | CN113287232B (de) |
| DE (1) | DE102019129824A1 (de) |
| PL (1) | PL3880407T3 (de) |
| WO (1) | WO2021089207A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114883855A (zh) * | 2022-04-28 | 2022-08-09 | 深圳精智机器有限公司 | 充电插头对接装置和方法 |
| CN115632256A (zh) * | 2022-11-01 | 2023-01-20 | 深圳银星智能集团股份有限公司 | 一种清洁设备 |
| DE102024203010A1 (de) * | 2024-03-28 | 2025-10-02 | BSH Hausgeräte GmbH | Kupplungssystem für eine Saugvorrichtung mit zueinander ausgerichteten elektrischen Steckeinheiten und Führungs-Konturen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US2681807A (en) * | 1951-06-02 | 1954-06-22 | Gustav S Krafft | Fusee holder |
| US3024051A (en) * | 1960-05-25 | 1962-03-06 | Borg Warner | Remote coupling mechanism |
| US3526040A (en) * | 1968-05-03 | 1970-09-01 | Sidney G Young | Measuring instrument |
| US3967909A (en) * | 1974-11-07 | 1976-07-06 | The Salem Tool Company | Latching and latch releasing mechanism for auger string couplings |
| JPH03292922A (ja) * | 1990-04-11 | 1991-12-24 | Tokyo Electric Co Ltd | 電気掃除機 |
| JP2907235B2 (ja) * | 1990-12-15 | 1999-06-21 | 矢崎総業株式会社 | レバー付コネクタ |
| US5466102A (en) * | 1993-12-16 | 1995-11-14 | Kennametal Inc. | System for coupling machine tools |
| DE29508203U1 (de) * | 1995-05-15 | 1995-08-03 | Hohmann, Joachim, 13503 Berlin | Verlängerbare Kettensäge |
| US6464405B2 (en) * | 1999-10-14 | 2002-10-15 | Ocean Design, Inc. | Wet-mateable electro-optical connector |
| US6729413B2 (en) * | 2001-08-24 | 2004-05-04 | Black & Decker Inc. | Power tool with battery pack ejector |
| US6672792B1 (en) * | 2002-06-28 | 2004-01-06 | Interlock Structures Internatioal Inc. | Tube fastener apparatus |
| US7484300B2 (en) * | 2004-09-09 | 2009-02-03 | Black & Decker Inc. | Extensible pole saw having separable sections |
| US9599261B2 (en) * | 2005-10-06 | 2017-03-21 | American Seal And Engineering Company, Inc. | Volumetric sealing system |
| TWM299627U (en) * | 2006-04-26 | 2006-10-21 | Tranmax Machinery Co Ltd | Improvement structure for gear ring of electric tool |
| DE102006050816B4 (de) * | 2006-10-27 | 2015-10-22 | Robert Bosch Gmbh | Elektrohandwerkzeugmaschine |
| DE102007008388A1 (de) * | 2007-02-21 | 2008-08-28 | Festool Gmbh | Vorrichtung zum Verbinden einer Werkstück-Bearbeitungsmaschine mit einem Absaugschlauch |
| DE102007012394A1 (de) * | 2007-03-15 | 2008-09-18 | Festool Gmbh | Griffstab einer handgeführten Werkzeugmaschine |
| JP5767955B2 (ja) | 2011-12-01 | 2015-08-26 | 株式会社マキタ | 携帯型作業機 |
| DE102013213271A1 (de) * | 2013-07-05 | 2015-01-08 | Flex-Elektrowerkzeuge Gmbh | Handgehaltene Schleifmaschine |
| DE102014109583A1 (de) | 2014-06-13 | 2015-12-17 | Metabowerke Gmbh | Langhalsschleifer |
| JP6213434B2 (ja) * | 2014-09-18 | 2017-10-18 | 株式会社デンソー | 電子装置 |
| DE102014119249A1 (de) * | 2014-12-19 | 2016-06-23 | Festool Gmbh | Saugschlauch-Anschlussstück |
| DE102015207151A1 (de) * | 2015-04-20 | 2016-10-20 | Robert Bosch Gmbh | Befestigungsmittel für Handwerkzeugmaschine |
| US10388921B2 (en) * | 2015-07-22 | 2019-08-20 | Tti (Macao Commercial Offshore) Limited | Latching mechanism for a battery pack |
| US10080471B2 (en) | 2015-12-21 | 2018-09-25 | Electrolux Home Care Products, Inc. | Versatile vacuum cleaners |
| DE102016106557A1 (de) * | 2016-04-11 | 2017-10-12 | Festool Gmbh | Hand-Werkzeugmaschine mit einem Antriebsmotor |
| US10003163B2 (en) * | 2016-08-16 | 2018-06-19 | International Business Machines Corporation | Power distribution unit |
| DE102016115490B4 (de) * | 2016-08-22 | 2018-06-07 | Harting Electric Gmbh & Co. Kg | Anschlusselement |
| CN106956174A (zh) * | 2017-02-17 | 2017-07-18 | 东莞产权交易中心 | 一种光网电动墙壁打磨机 |
| JP2019130645A (ja) * | 2018-02-01 | 2019-08-08 | 株式会社マキタ | 長竿型研磨機 |
| JP7480173B2 (ja) * | 2019-05-02 | 2024-05-09 | フェスツール ゲーエムベーハー | 手持ち工作機械用アタッチメント装置 |
| GB2592572A (en) * | 2020-01-30 | 2021-09-08 | Black & Decker Inc | Pole Sander |
| US12178311B2 (en) * | 2020-11-03 | 2024-12-31 | Techtronic Cordless Gp | Drive coupler for power scrubber |
| US20230001532A1 (en) * | 2021-06-30 | 2023-01-05 | Marshalltown Company | Vacuum Sander |
-
2019
- 2019-11-05 DE DE102019129824.5A patent/DE102019129824A1/de not_active Ceased
-
2020
- 2020-07-30 PL PL20749892.4T patent/PL3880407T3/pl unknown
- 2020-07-30 US US17/414,358 patent/US12576503B2/en active Active
- 2020-07-30 JP JP2021539550A patent/JP7353371B2/ja active Active
- 2020-07-30 EP EP20749892.4A patent/EP3880407B9/de active Active
- 2020-07-30 CN CN202080007887.0A patent/CN113287232B/zh active Active
- 2020-07-30 WO PCT/EP2020/071600 patent/WO2021089207A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN113287232A (zh) | 2021-08-20 |
| PL3880407T3 (pl) | 2022-10-17 |
| EP3880407B1 (de) | 2022-07-06 |
| JP7353371B2 (ja) | 2023-09-29 |
| CN113287232B (zh) | 2023-11-21 |
| US20220040838A1 (en) | 2022-02-10 |
| DE102019129824A1 (de) | 2021-05-06 |
| WO2021089207A1 (de) | 2021-05-14 |
| EP3880407B9 (de) | 2023-04-19 |
| US12576503B2 (en) | 2026-03-17 |
| JP2022534340A (ja) | 2022-07-29 |
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