EP4255686A1 - Griff für eine werkzeugmaschine, werkzeugmaschine und verfahren zum einschalten, ausschalten und verriegeln derselben - Google Patents
Griff für eine werkzeugmaschine, werkzeugmaschine und verfahren zum einschalten, ausschalten und verriegeln derselbenInfo
- Publication number
- EP4255686A1 EP4255686A1 EP21819437.1A EP21819437A EP4255686A1 EP 4255686 A1 EP4255686 A1 EP 4255686A1 EP 21819437 A EP21819437 A EP 21819437A EP 4255686 A1 EP4255686 A1 EP 4255686A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- handle
- machine tool
- actuating
- spring element
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title description 2
- 230000013011 mating Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 11
- 230000000903 blocking effect Effects 0.000 description 7
- 238000000926 separation method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007373 indentation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling
Definitions
- the present invention relates to a handle for a machine tool, the handle having a safety switch and an actuating switch.
- the handle is characterized in that the safety switch comprises a switching area and a front area, the front area being set up to interact with a counter-contour of the actuating switch in such a way that the machine tool is prevented from being switched on unintentionally.
- the invention relates to a machine tool with a proposed handle. With the invention, an improved locking option for an actuating switch of a machine tool can advantageously be made available.
- machine tools which are used, for example, to machine substrates or workpieces.
- Hand-held power tools in particular usually have one or more handles with which the power tools can be held and/or guided.
- the handles of the machine tools include actuating switches with which a user can switch the machine tool on or off, for example.
- the aim is to effectively prevent undesired switching on in order to reduce any safety risks for the users.
- Conventional machine tools often have locking mechanisms that often increase the volume of the handle, which can have a negative effect on the handling of the device.
- a handle for a machine tool having a safety switch and an actuating switch.
- the handle is characterized in that the safety switch comprises a switching area and a front area, the front area being set up to interact with a counter-contour of the actuating switch in such a way that the machine tool is prevented from being switched on unintentionally.
- an improved locking option for an actuating switch of a machine tool can be made available.
- the proposed handle with the safety switch makes it possible for the power tool to be put into operation only when the safety switch and the actuating switch are actuated essentially simultaneously.
- the commissioning of the machine tool is preferably to be understood as switching on the machine tool.
- the specific configuration of the handle components, in particular the safety switch and the actuation switch can advantageously provide a particularly efficient lock for a machine tool, with the safety switch and the actuation switch being set up in particular to interact to form a locking function for a machine tool.
- the proposed handle for a machine tool can advantageously be designed particularly slim, compact and with good ergonomics due to the interaction of safety switch and actuating switch.
- sensitive components to the touch such as electronic switching elements, can be better protected by the invention than in conventional machine tools against excessive pressure.
- the switching area of the safety switch is preferably on an upper side of the handle and can be touched and operated at least partially by a user of the machine tool.
- the front portion of the safety switch is preferably in an interior space of the handle.
- This front area of the safety switch can be designed, for example, like a nose or a protruding area. As a result, the front area of the safety switch can come into particularly good contact or engagement with the actuating switch or its counter-contour. It is preferred within the meaning of the invention that the front area of the safety switch is arranged in spatial proximity to the pivot point of the safety switch.
- the pivot point of the safety switch can preferably divide the safety switch into a first and a second area, with the first part of the safety switch essentially being formed by the front area of the safety switch, which is preferably designed in the shape of a nose.
- the second area of the safety switch which is preferably significantly larger, is preferably located behind the pivot point of the safety switch and preferably includes the switching area of the safety switch.
- the safety switch and its components are caused to rotate about the pivot point of the safety switch by actuating the safety switch. This changes in particular the position of the front area of the safety switch, which is preferably set up to interact with the actuating switch of the proposed handle.
- the rotary movement of the safety switch which is preferably caused by its actuation, leads to a change in the position of the front area of the safety switch.
- This change in position of the front area of the safety switch can advantageously be used to transfer the safety switch from a safety position S to an operating position B. This happens in particular because the front area of the safety switch comes into contact with another area of the counter-contour of the actuating switch due to its change in position, with the different contact areas ("rib” or “depression”, as explained below) corresponding to the different positions of the safety switch Handle (safety position S or operating position B) are associated.
- the counter-contour of the actuating switch has ribs and indentations. Such ribs and indentations are shown in Figures 1 and 2.
- the counter-contour of the actuating switch is given a height profile by the ribs and indentations, with the front area of the safety switch having the different Height levels of the counter-contour of the operating switch can interact. The interaction can be realized, for example, by the fact that there is contact between the front area of the safety switch and a component of the counter-contour of the actuating switch.
- the front part of the safety switch in a safety position S the front part of the safety switch can be in contact with a rib of the counter-contour of the operating switch, while in an operating position B the same front part of the safety switch is in contact with a recess of the counter-contour of the operating switch.
- the safety switch is mounted in the handle so that it can rotate about a pivot point. In this way, the front part of the safety switch can be in the different positions in which it is either in contact with a rib of the counter-contour of the operating switch or in contact with a recess of the counter-contour of the operating switch.
- the safety switch has a contact area that can be in contact with the counter-contour of the actuating switch.
- the contact area is preferably in the front area of the safety switch and the contact area can be designed to be electrically conductive.
- the preferably electrically conductive contact area of the safety switch can interact, for example, with contacts or pins of the actuating switch and thus form an electrically conductive connection.
- the contact area of the safety switch it is particularly preferred within the meaning of the invention for the contact area of the safety switch to be designed to be electrically non-conductive, i.e. in particular to include or be formed from such a material that is considered to be electrically non-conductive.
- the counter-contour is arranged in an interior space of the actuating switch.
- the arrangement of the counter-contour of the actuating switch in its interior is shown in Figures 1 and 2.
- the safety switch can preferably be accommodated at least partially by the interior of the actuating switch.
- the safety switch can be accommodated at least partially by the actuating switch when it is switched on.
- the at least partial accommodation of the safety switch in the interior of the actuating switch preferably means, within the meaning of the invention, that parts or partial areas of the safety switch can be accommodated in an interior space of the safety switch. This preferably happens when the safety switch and/or the actuating switch are actuated. Included For example, the two switches can be pressed, whereby the switches are thereby moved towards one another.
- the two switches are preferably designed to correspond to one another in the sense that when at least one of the two switches is actuated, the safety switch is pushed at least partially into the interior of the actuating switch and comes to rest there.
- a particularly compact and space-saving handle can advantageously be provided.
- the safety switch is at least partially accommodated by the interior of the actuating switch.
- the safety switch and the actuating switch enable operation of the machine tool in an operating position B and prevent operation of the machine tool in a safety position S.
- the machine tool can be operated in particular when the safety switch and the actuating switch are actuated preferentially or essentially simultaneously. If the handle of the machine tool includes a switch-on lock explained later in addition to the safety switch, the machine tool can only be switched on, for example, if the switch-on lock is not in a locked position and if the safety switch and the actuating switch are pressed essentially simultaneously.
- the proposed handle can preferably be transferred from the safety position S to the operating position B by essentially simultaneously actuating the safety switch and the actuating switch.
- actuation of the actuation switch only leads to the switching on of the machine tool if the safety switch of the machine tool is also actuated essentially at the same time.
- the actuating switch is preferably initially blocked and can only be actuated when the safety switch is actuated sufficiently. This is preferably made possible by an essentially simultaneous actuation of the safety switch and the actuation switch.
- the handle has a spring element for exerting a pretension between the safety switch and the actuating switch.
- the spring element can be designed, for example, as a spiral or torsion spring.
- the spring element can have two legs, wherein the spring element can be rotated about a pivot point.
- the spring element can preferably be designed as a torsion spring, with the spring element having a first end and a second end. It is preferred within the meaning of the invention that the first end of the spring element is set up to interact with the safety switch, while the second end of the spring element is set up to interact with the actuating switch.
- the legs of the spring element can preferably also be referred to as ends within the meaning of the invention, with the spring element being set up to bias the actuating switch and the safety switch against one another via the two ends or legs. Due to the spring force of the spring element, ie its preload, the switches can be returned to their initial position after they have been actuated. It is preferred within the meaning of the invention that the prestressing is in the operating position B and is set up to move the safety switch and/or the actuating switch into the safety position S.
- the grid can have a switch-on lock, the switch-on lock being set up to prevent contact between a further spring element of the actuating switch and an electronic switching element in a locked position of the switch-on lock and to enable it in an operating position of the switch-on lock.
- the switch-on lock is preferably set up to prevent the power tool from being switched on, but not the actuation of the actuating switch.
- the safety switch is preferably set up to prevent the actuation of the actuating switch. In other words, the switch-on lock can be used to prevent the machine tool from being switched on, although the actuating switch may be actuated. As a further safety measure, actuation of the actuating switch can be effectively prevented with the safety switch.
- the handle with switch-on lock and safety switch represents a machine tool handle that is advantageously doubly protected against unwanted switching on of the machine tool, namely on the one hand by the fact that the actuating switch cannot be actuated without actuating the safety switch, while the machine tool is also switched on by the switch-on lock is prevented.
- an even further improved locking possibility for an actuating switch of a machine tool can be made available, with which at the same time the actual electronic actuation is relocated away from the actuating switch.
- This transfer is made possible by the provision of the additional spring element, which preferably has a certain length. It is within the meaning of the invention preferably that the length of the additional spring element defines a distance between a switching area of the actuating switch and the electronic switching element.
- the switching area of the actuating switch represents the location at which the actuating switch is actuated (“actuating location”), while the location at which the electronic effect of actuating the actuating switch occurs is in the area of the electronic switching element (“acting location”).
- the electronic place of action can be shifted out of the gripping area of the handle of the machine tool, so that the gripping area can be made slim, compact and easy to grip. This improves the ergonomics of the handle and makes it easier to handle and transport the machine tool.
- the handle of the power tool has a C-shape, which has two rounded areas instead of one continuous curve.
- the gripping area of the handle In the middle of the handle, preferably between the two rounded areas, is the gripping area of the handle, which is enclosed by the user's hand during operation of the machine tool in order to hold and guide the machine tool and to use the switches provided on the handle to make settings.
- the handle has two side parts of the handle between the rounded areas and the machine tool. According to the invention, it is preferred that the part of the actuating switch that is visible from the outside is arranged on an underside of the handle area and thus on the side of the handle facing the machine tool, while the switch-on lock and the safety switch are arranged on an upper side of the handle.
- the switch-on lock is preferably arranged on the front side part of the power tool handle.
- the part of the actuating switch that is visible from the outside is preferably also referred to as the switching area of the actuating switch.
- the electronic switching element is also present in the front side part of the handle of the machine tool, in particular in an interior space of the front side part of the machine tool handle.
- the effective location of the actuating switch is preferably also located there. The inventors have recognized that by providing the site of action outside the grip area of the machine tool handle, a particularly compact, ergonomic design of the grip area of the handle of the machine tool can be made possible.
- the switch-on lock which is preferably arranged in the front side part of the power tool handle, can have a locking geometry.
- This locking geometry of the switch-on lock is is preferably set up to prevent or enable contact between the further spring element of the actuating switch and the electronic switching element. If the contact is possible, the machine tool can be switched on and the switch-on lockout or the machine tool is in an operating position. The user can then switch on the power tool by actuating the actuating switch on the grip area of the power tool handle and work with the power tool.
- the machine tool is switched on in particular by actuating the actuating switch in a spatial direction “upwards”, as a result of which the actuating switch rotates about a pivot point inside the handle.
- the pivot point is located in the area of a rounded area of the power tool handle. In particular, it can be arranged in the rounded area between the front side part of the handle and the handle area.
- the further spring element of the actuating switch can come into contact with the electronic switching element as a result of the downward movement, as a result of which an internal circuit of the machine tool is closed and the machine tool is started or switched on.
- the locking geometry of the switch-on lock prevents contact between the additional spring element and the electronic switching element and prevents the internal power tool circuit from being closed.
- This blocking is preferably achieved in that a lug of the additional spring element is received by a receiving space of the blocking geometry, as a result of which a downward movement of the additional spring element in the direction of the electronic switching element is prevented.
- the further spring element has an electrically conductive contact area which can be in contact with the electronic switching element in the operating position of the switch-on lock. It is therefore in particular the electrically conductive contact area of the other spring element of the actuating switch that can be in contact with the electronic switching element in the operating position of the switch lock or the machine tool in order to close the internal machine tool circuit and enable operation of the machine tool.
- the further spring element does not have an electrically conductive contact area, but is set up to actuate the electronic switching element.
- Electronic switching element comprises a microswitch, it being preferred within the meaning of the invention that the microswitch is actuated by a portion of the other spring element. This actuation preferably takes place when the spring element moves downwards, which is caused by actuation of the actuating switch.
- the further spring element preferably has a lug which can engage with the blocking geometry of the switch-on lock in such a way that contact between the further spring element of the actuating switch and the electronic switching element can be prevented in a blocked position.
- the nose of the additional spring element can be accommodated by a receiving area of the locking geometry of the switch-on lock, so that a movement of the additional spring element in a spatial direction "downwards" and a contact between the electrically conductive contact area of the additional spring element and the electronic switching element in the locked position is straight is prevented.
- the lug of the additional spring element and the blocking geometry are in contact with one another, so that the movement of the additional spring element in the “downward” spatial direction and thus the contact between the additional spring element and the electronic switching element is made possible.
- Tests have shown that the proposed locking can effectively and safely prevent the machine tool from starting up unintentionally.
- the lug is designed as a protruding area of the additional spring element of the actuating switch and is set up to interact with the locking geometry of the switch-on lock or to be received by a receiving area of the locking geometry. It is preferred within the meaning of the invention that the receiving area of the blocking geometry and the nose of the additional spring element are designed to be coordinated with one another or correspond to one another in terms of their spatial shape.
- the invention effectively protects the electronic actuating elements, such as the electronic switching element, from any mechanical overloading by the proposed configuration of the actuating switch.
- the additional spring element of the actuating switch is set up to be exposed to deformation, with the deformation of the additional spring element protecting the electronic switching element from mechanical overload.
- the additional spring element of the actuating switch can absorb deformation energy, which prevents excessive loading and excessive mechanical pressure on the electronic switching element in that the additional spring element absorbs the pressure energy itself.
- the deformation of the additional spring element can prevent the electronic switching element from mechanical see overuse protect.
- contact between the further spring element and the electronic switching element can be prevented in a blocked position by the deformability of the further spring element of the actuating switch.
- the additional spring element of the actuating switch can absorb deformation energy, so that a downward movement, i.e. a movement of the additional spring element in a "downward" spatial direction, is prevented, so that an electrically conductive contact area of the additional spring element of the actuating switch does not enter the area of the electronic switching element.
- this blockage is referred to as a locking or blocking of the machine tool, with the locking being able to effectively prevent the machine tool from being switched on undesirably, especially during transport or when carrying it.
- the electronic switching element is preferably located in an interior space of the handle of the power tool. It can include one or more microswitches that interact with an electrically conductive contact area of the other spring element of the actuating switch in such a way that a circuit is closed within the machine tool. This closing of the circuit by contact between the additional spring element and the electronic switching element preferably causes the machine tool to be switched on, while opening the circuit by terminating the contact between the additional spring element and the electronic switching element leads to the machine tool being switched off.
- the actuating switch can also be referred to as a switch-on lever. It is preferably designed to switch the machine tool on and off. It is preferred within the meaning of the invention that the actuating switch has a switching area which is arranged on the handle area of the power tool handle so that it is visible from the outside. In addition, the actuating switch includes a further spring element, which is arranged inside the handle and is generally not visible to the user. The user actuates the actuating switch preferably by gripping the handle of the power tool with one hand, a right-handed person for example with his right hand, and exerting pressure on the switching area of the actuating switch with his fingers.
- the actuating switch or its switching area is preferably arranged on a second side of the handle, which preferably represents an underside of the handle and faces the machine tool.
- the first side of the handle is preferably also referred to as the top of the handle and is preferably on the side of the handle facing away from the machine tool.
- the handle can have a C-shape, for example, with the underside of the handle forming the inside of the letter C, which preferably faces the machine tool.
- the switch-on lock is arranged on the first side of the handle, which preferably represents an upper side of the handle and forms the outside of the letter C facing away from the machine tool.
- the switch-on lock and the actuating switch are arranged on different or opposite sides of the handle. This preferably also applies to the safety switch and the actuation switch of the proposed handle.
- a machine tool that includes a proposed handle represents a second aspect of the invention.
- the handle preferably represents a device that is independent of the machine tool and that, although it interacts with a machine tool, can also be sold separately, for example.
- the terms, definitions and technical advantages introduced for the handle preferably apply analogously to the machine tool, and vice versa.
- the actuating switch comprises a switching area and the further spring element, with a pivot point of the actuating switch being arranged between the switching area and the further spring element of the actuating switch.
- this preferably means that the switching area and the spring area of the actuating switch are separated from one another by its pivot point.
- the fulcrum is preferably the point around which the components of the actuating switch, such as the switching area and additional spring element, can rotate when the actuating switch is actuated, ie pressed.
- the pivot point is preferably inside the handle of the machine tool. According to the invention, it is preferred that the fulcrum is formed by an essentially cylindrical body onto which an opening within the actuating switch can be slipped.
- the actuating switch comprises an opening with an essentially circular base area, which is set up to accommodate the essentially cylindrical body, which is preferably part of the power tool handle.
- the additional spring element of the actuating switch experiences a force in the “down” spatial direction when the switching area of the actuating switch is pressed in the “up” spatial direction by a user of the machine tool.
- the terms of the spatial directions are based on the first and the second side of the handle of the machine tool, which are preferably also referred to as the top and bottom of the handle within the meaning of the invention.
- the spatial directions “up” and “down” and the top and bottom of the machine tool handle are also shown in the figures.
- the locking geometry is designed to be movable as part of the switch-on lock and can be brought from the locked position into the operating position and back by pushing the switch-on lock on.
- the switch-on lock can preferably be present in two different positions, it being possible for the switch-on lock to be transferred from one position to the other position by a pushing movement.
- the switch-on lock can be designed in particular as a slide switch, with one position corresponding to the locked position in which the machine tool cannot be switched on, and the other position corresponding to the operating position in which operation of the machine tool is possible.
- a point of action of the actuating switch is not in the immediate spatial vicinity of the actuating switch, but rather in a spaced-apart inner area of the handle of the machine tool.
- the effect of the actuating switch due to the arrangement of the additional spring element and switching area on different sides of the pivot point of the actuating switch, means that the point of action of the actuating switch is not in the immediate spatial vicinity of the actuating switch, but further away from it, preferably at a distance which corresponds to the length of the further spring element, which is preferably elongate.
- the point of action of the actuating switch is not on the side of the switching area of the actuating switch, but on the other side of the pivot point of the actuating switch, namely on the side of the additional spring element of the actuating switch.
- the switching area of the actuating switch is arranged in the handle area of the machine tool switch, while the other spring element of the actuating switch protrudes into the front side part of the handle.
- the pivot point is preferably in the area of the rounded area or transition area between the front side part and the handle area of the power tool handle. It is very particularly preferred within the meaning of the invention that the point of action of the actuating switch coincides with a position of the electronic switching element. This coincidence advantageously leads to the intended according to the invention falling apart of the actuation location and the effective location and to their desired spatial separation, so that the handle of the machine tool can be designed to be slim and compact.
- the actual point of action of the actuating switch and the point of actuation are decoupled from one another.
- the locking or the switch-on lock of the machine tool and the location of the actuating switch can advantageously also be spatially separated from one another.
- This spatial separation is achieved by the actuating switch arranged rotatably within the power tool handle, the additional spring element of which extends into a front side part of the handle and thus overcomes the distance to the switch lock and the electronic switching element that are present in the front side part of the handle.
- the switching area of the actuating switch which is pressed by the user in order to switch on the machine tool, for example, is in contrast in the gripping area of the machine tool handle, preferably clearly visible to the user.
- the electronic actuation elements such as switching elements or microswitches, are protected against any overloading by the proposed design of the actuation switch and switch-on lock.
- the further spring element or the electrically conductive contact area which can come into contact with the electronic switching element in order to close an internal power tool circuit, are arranged on different sides of a pivot point of the actuating switch.
- the actuation of the electronic switching element can be shifted out of the actual switching area of the actuating switch.
- it can be shifted out of the grip area of the power tool grip and into a front side part of the grip.
- the switch-on lever can be made very slim and space-saving.
- the actual contact geometry for the electronic switching element is attached integrally to the actuating switch by means of the additional spring element.
- the contact geometry includes the electrically conductive contact area with the preferably at least one microswitch of the electronic switching element can come into contact.
- the preferably resilient configuration of the further spring element can ensure that the electronic switching element or the microswitch is pressed reliably on the one hand and is protected from overloading and/or damage on the other hand.
- the further spring element is designed as a plastic spring or comprises at least one plastic.
- the design of the further spring element is preferably designed such that the further spring element has elastic properties, in particular due to its spatial shape and its material thickness, which allow deformation energy to be absorbed without the further spring element itself suffering mechanical damage.
- the deformability and the elastic properties of the additional spring element of the actuating switch preferably contribute to the particularly effective overload protection of the sensitive electronic components of the handle and also ensure that contact is avoided between the additional spring element and the electronic component in the locked position of the switch lock or the machine tool.
- the switch-on lock can be designed as a slide switch and advantageously prevents the contact geometry from being able to press on the electronic switching element or its microswitch in the locked position.
- a locking geometry of the switch-on lock engages between the contact geometry of the actuating switch and the electronic switching element.
- a nose of the additional spring element is received by a receiving area of the locking geometry.
- the path that the contact geometry would have to overcome in order to come into contact with the electronic switching element is converted into a deformation of the additional spring element when the actuating switch is actuated. There is thus no actuation of the electronic switching element or its microswitches in the locked position. This effectively prevents the machine tool from starting up undesirably and the user can be protected from any safety risks if the device starts up undesirably.
- Advantages of the invention are also an optimized installation space in the switching area of the power tool handle, which is therefore ergonomically good.
- protection of the electronic switch components is made possible by the integrated, resilient plastic spring element.
- the invention manages with a small number of components, which reduces the complexity of the machine tool and its susceptibility to errors.
- a reliable locking of the device against unintentional starting can be guaranteed, as well as overload protection for the sensitive electronic components in the handle of the machine tool.
- FIG. 1 sectional views through a preferred embodiment of the handle in a safety position S,
- FIG. 3 shows a section through a preferred embodiment of the handle, the switch-on lock being in the operating position
- Figure 1 shows a sectional view through a preferred embodiment of the handle 1 in a safety position S.
- the handle 1 of a machine tool has a safety switch 20 and an actuating switch 3, as well as a switch-on lock 2, described in more detail from Figure 3.
- the actuating switch 3 is set up for this purpose To be operated by a user, whereby the machine tool can be switched on in particular.
- the machine tool can preferably be switched on when the safety switch 20 and the switch-on lock 2 of the handle 1 are in an operating position B.
- the machine tool can be switched on when the safety switch 20 and the actuating switch 3 are pressed or actuated essentially simultaneously.
- the safety switch 20 has a switching area 21 and a front area 22, the front area 22 being set up to interact with a counter-contour 31 of the actuating switch 3 in such a way that the machine tool is effectively prevented from being switched on unintentionally.
- Switching area 21 is preferably set up to be actuated by a user, in which case, for example, the palm of the user's hand can rest on safety switch 20, while the user's fingers can enclose switching area 9 (see Figures 3 and 4) of actuating switch 3 .
- the counter-contour 31 of the actuating switch 3 can have ribs and indentations and can be arranged in an interior space of the actuating switch 3 .
- the safety switch 20 of the proposed handle 1 can be located on a first, upper side 7 of the handle 1, while the actuating switch 3 is located on a second, lower side 8 of the handle 1 (see Figures 3 and 4).
- the safety switch 20 In an operating position B, the safety switch 20 can be accommodated at least partially by the interior of the actuating switch 3, so that the safety switch 20 and the actuating switch 3 advantageously enable the machine tool to be operated in an operating position B, while the safety switch 20 and the actuating switch 3 are in a safety position S Prevent operation of the machine tool.
- the safety position S is shown in FIG. 1, while the operating position B is shown in FIG.
- the front area 22 of the safety switch 20 can be in a safety position S in contact with a rib of the counter-contour 31 of the actuating switch 3 and in an operating position B with a recess of the counter-contour 31 of the actuating switch 3.
- the handle 1 can be operated by a substantially simultaneous actuation the safety switch 20 and the actuating switch 3 from the safety position S to the operating position ment B are transferred.
- the handle 1 can also have a spring element 40 for exerting a pretension between the safety switch 20 and the actuating switch 3 .
- the spring element 40 can be used in particular to prestress the safety switch 20 and the actuating switch 3 . This pretension allows the safety switch 20 and the actuating switch 3 to return to their initial position after they have been actuated, with this initial position preferably corresponding to the safety position S.
- the pretension exists in particular in the operating position B and is preferably set up to convert the safety switch 20 and/or the actuating switch 3 into the safety position S.
- the spring element 40 can be designed as a torsion spring, wherein the spring element 40 can have a first end 41 and a second end 42 . The first end 41 of the spring element 40 is preferably set up to interact with the safety switch 20 , while the second end 42 of the spring element 40 is set up to interact with the actuating switch 3 .
- FIG. 2 shows a sectional illustration through a preferred embodiment of the handle 1 in an operating position B.
- the operating position B is present in particular when the switches 20, 3 have been actuated by a user of the machine tool.
- parts of the safety switch 20 can be accommodated by an interior space of the actuating switch 3 .
- the upper illustrations of FIGS. 1 and 2 show sections through the handle 1, the interiors of the switches 20, 3 not being shown.
- the sectional views, which each form the lower area of Figures 1 and 2 also show the interiors of the actuating switch 3 and the safety switch 20.
- the optical exposure of the interiors of the safety switch 20 and the actuating switch 3 is achieved in particular by the side walls of the switches 20, 3 are not shown in the lower illustrations of FIGS. 1 and 2 or have been omitted from the illustration.
- the front area 22 of the safety switch 20 is in contact with a depression in the counter-contour 31 of the actuating switch 3 .
- FIG. 3 shows a section through a preferred embodiment of the handle 1 with a switch-on lock 2, the switch-on lock 2 being in an operating position in the exemplary embodiment of the invention shown in FIG.
- the handle 1 can preferably be designed similar to a letter C, with a middle area of the handle 1 being referred to as the handle area 15 .
- the user of the machine tool can grasp this grip area 15 with one hand, with his fingers coming to rest on the underside 8 of the grip 1, while end of the palm of the hand on the top 7 of the handle 1 will rest.
- On the underside 8 of the handle 1 is the visible part of the actuating lever 3, which is referred to as the switching area 9.
- the user of the machine tool can exert pressure on this switching area 9 with his fingers in the spatial direction “up” (O), as a result of which the actuating switch 3 is actuated.
- the actuation location 14 of the actuation switch 3 is therefore in the area of the switching area 9 of the actuation switch 3 .
- the actuation location 14 of the actuation switch 3 is thus located in particular in the handle area 15 of the power tool handle 1.
- the spatial directions “up” and “down” are shown in FIG.
- the actuating switch 3 includes a further spring element 5, which can be designed, for example, as a plastic spring.
- the further spring element 5 preferably has resilient and/or elastic properties and it can be deformed. In this way, the further spring element 5 can absorb deformation energy.
- the other spring element 5 and the switching area 9 are on different sides of a pivot point 10 of the actuating switch 3 .
- the pivot point 10 is preferably located between the further spring element 5 and the switching area 9 and is arranged in an interior space of the handle 1 . While the switching area 9 of the actuating switch 3 is in the handle area 15 of the handle 1 of the machine tool, the further spring element 5 is preferably in a front side part or side area 16 of the handle 1 .
- the pivot point 10 of the actuating switch 3 is preferably located in this rounded area 17 .
- the front side area 16 connects the handle area 15 to the machine tool or represents a connecting element between the handle area 15 and the machine tool.
- the other spring element 5 and the switching area 9 can rotate around the pivot point 10 .
- a virtual axis of rotation which protrudes from the drawing plane of the figures, preferably runs through the pivot point 10 .
- the switching area 9 is moved in the spatial direction "up” O, while the further spring element 5 is moved in the spatial direction "down". This downward movement is only possible when the machine tool is unlocked. This is the case when a switch-on lock 2 of the machine tool, which is provided on the handle 1 of the machine tool, is in the operating position. Due to the downward movement of the additional spring element 5 an electrically conductive area 11, which is part of the further spring element 5, can come into contact with the electronic switching element 6.
- an internal circuit of the machine tool is closed and the machine tool is switched on.
- the closing of the circuit is understood in the sense of the invention as an "effect" of the actuation of the actuating switch 3 .
- the effective location 13 of the actuating switch 3 is in the area of the electronic switching element 6, namely where the electrically conductive area 11 of the further spring element 5 of the actuating switch 3 touches the electronic switching element 6 or comes into contact with it.
- Site of action 13 and site of actuation 14 of the actuation switch 3 fall apart according to the invention, which in the context of the invention is referred to as "relocated actuation” or as "spatial separation of site of action 13 and site of actuation 14".
- This spatial separation means that switching and/or transmission elements can be shifted out of the handle area 15 of the machine tool handle 1, so that this handle area 15 of the handle 1 can be made slim and compact.
- the resilient and/or elastic properties of the further spring element 5 of the actuating switch 3 can prevent excessive mechanical pressure from acting on the electronic switching element 6 . In the further spring element 5, too strong a downward movement can be converted into a deformation of the further spring element 5, so that an excessive mechanical load on the electronic switching element 6 is avoided.
- the electronic switching element 6 can include one or more microswitches.
- the further spring element 5 can have a lug 12 which can be designed as a protruding element and represents the outermost area of the further spring element 5 which protrudes furthest into the front side area 16 of the power tool handle 1 .
- the handle 1 has a switch-on lock 2, which is arranged on an upper side 7 of the handle 1, preferably in the area of the front side part 16 of the handle 1.
- Fig. 3 are the nose 12 of the further spring element 5 and the Switch-on lock 2 side by side or in contact with one another and a downward movement of the further spring element 5 of the actuating switch 3 is possible.
- an electrically conductive area 11 of the further spring element 5 and the electronic switching element 6 can come into contact with one another and the internal power tool circuit can be closed, as a result of which the power tool is switched on.
- the switch-on lock 2 has a locking geometry 4 which can interact with the additional spring element 5 of the actuating switch 3 .
- the nose 12 of the other spring element 5 can be excluded from a receiving space 18 of the locking geometry 4 of the switch-on lock 2, whereby a downward movement of the other spring element 5 and a Contact between the further spring element 5 and the electronic switching element 6 is prevented.
- This locked position is shown in FIG.
- the machine tool is locked in this locked position, so that it cannot be switched on.
- the switch-on lock 2 can be transferred from the locked position to the operating position by a pushing movement.
- the switch lock 2 is preferably designed as a slide switch.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Tumbler Switches (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20211904.6A EP4008492A1 (de) | 2020-12-04 | 2020-12-04 | Griff für eine werkzeugmaschine, werkzeugmaschine und verfahren zum einschalten, ausschalten und verriegeln derselben |
PCT/EP2021/082797 WO2022117409A1 (de) | 2020-12-04 | 2021-11-24 | Griff für eine werkzeugmaschine, werkzeugmaschine und verfahren zum einschalten, ausschalten und verriegeln derselben |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4255686A1 true EP4255686A1 (de) | 2023-10-11 |
Family
ID=73726667
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20211904.6A Withdrawn EP4008492A1 (de) | 2020-12-04 | 2020-12-04 | Griff für eine werkzeugmaschine, werkzeugmaschine und verfahren zum einschalten, ausschalten und verriegeln derselben |
EP21810350.5A Withdrawn EP4255684A1 (de) | 2020-12-04 | 2021-11-11 | Griff für eine werkzeugmaschine, werkzeugmaschine und verfahren zum einschalten, ausschalten und verriegeln derselben |
EP21819437.1A Withdrawn EP4255686A1 (de) | 2020-12-04 | 2021-11-24 | Griff für eine werkzeugmaschine, werkzeugmaschine und verfahren zum einschalten, ausschalten und verriegeln derselben |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20211904.6A Withdrawn EP4008492A1 (de) | 2020-12-04 | 2020-12-04 | Griff für eine werkzeugmaschine, werkzeugmaschine und verfahren zum einschalten, ausschalten und verriegeln derselben |
EP21810350.5A Withdrawn EP4255684A1 (de) | 2020-12-04 | 2021-11-11 | Griff für eine werkzeugmaschine, werkzeugmaschine und verfahren zum einschalten, ausschalten und verriegeln derselben |
Country Status (4)
Country | Link |
---|---|
US (2) | US20240042590A1 (de) |
EP (3) | EP4008492A1 (de) |
CN (2) | CN116438041A (de) |
WO (2) | WO2022117311A1 (de) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3971906A (en) * | 1974-11-01 | 1976-07-27 | Lucerne Products, Inc. | Trigger-lock control |
US5577600A (en) * | 1995-11-21 | 1996-11-26 | Emerson Electric Co. | Switch lock-out device for power tool |
AUPS001902A0 (en) * | 2002-01-18 | 2002-02-07 | Ramsay, George Stephen | Improvement to power tools and trigger handles therefore |
US6812425B1 (en) * | 2003-11-24 | 2004-11-02 | Defond Components Limited | Locking trigger switch mechanism |
US6989503B2 (en) * | 2004-03-22 | 2006-01-24 | Defond Components Limited | Power tool trigger assembly |
AU2008246247B2 (en) * | 2006-04-26 | 2011-11-03 | Demain Technology Pty Ltd | A handle assembly for a power tool |
DE102012025309A1 (de) * | 2012-12-22 | 2014-06-26 | Andreas Stihl Ag & Co. Kg | Handgeführtes Arbeitsgerät mit einem Antriebsmotor zum Antrieb mindestens eines Werkzeugs und Verfahren zu dessen Betrieb |
DE102014009144A1 (de) * | 2014-06-20 | 2015-12-24 | Andreas Stihl Ag & Co. Kg | Handgeführtes Arbeitsgerät |
TWI593908B (zh) * | 2015-10-16 | 2017-08-01 | 力山工業股份有限公司 | 開關鍵安全裝置 |
US10818450B2 (en) * | 2017-06-14 | 2020-10-27 | Black & Decker Inc. | Paddle switch |
US11964356B2 (en) * | 2018-04-05 | 2024-04-23 | Makita Corporation | Hand-held tool |
JP7147871B2 (ja) * | 2018-11-30 | 2022-10-05 | 工機ホールディングス株式会社 | 作業機 |
DE202020002472U1 (de) * | 2020-06-04 | 2020-07-06 | Jenn Feng New Energy Co., Ltd. | Auslöser-Schalteinrichtung eines angetriebenen Werkzeugs zum Verhindern eines unbeabsichtigten Auslösevorgangs |
-
2020
- 2020-12-04 EP EP20211904.6A patent/EP4008492A1/de not_active Withdrawn
-
2021
- 2021-11-11 US US18/038,477 patent/US20240042590A1/en active Pending
- 2021-11-11 EP EP21810350.5A patent/EP4255684A1/de not_active Withdrawn
- 2021-11-11 WO PCT/EP2021/081394 patent/WO2022117311A1/de active Application Filing
- 2021-11-11 CN CN202180072963.0A patent/CN116438041A/zh active Pending
- 2021-11-24 US US18/038,474 patent/US20240009825A1/en active Pending
- 2021-11-24 EP EP21819437.1A patent/EP4255686A1/de not_active Withdrawn
- 2021-11-24 CN CN202180072956.0A patent/CN116457153A/zh active Pending
- 2021-11-24 WO PCT/EP2021/082797 patent/WO2022117409A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
US20240009825A1 (en) | 2024-01-11 |
WO2022117311A1 (de) | 2022-06-09 |
CN116438041A (zh) | 2023-07-14 |
EP4008492A1 (de) | 2022-06-08 |
US20240042590A1 (en) | 2024-02-08 |
CN116457153A (zh) | 2023-07-18 |
WO2022117409A1 (de) | 2022-06-09 |
EP4255684A1 (de) | 2023-10-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19905085A1 (de) | Batteriegetriebenes, handgeführtes Elektrowerkzeug | |
DE3329698A1 (de) | Drucktaste | |
DE102006000316A1 (de) | Haupthandgriff mit Sicherungsverriegelung | |
DE202010008031U1 (de) | Verriegelungs-Schaltervorrichtung für ein Kraftwerkzeug | |
DE102014214982A1 (de) | Elektrowerkzeugmaschine | |
WO2016193053A2 (de) | Werkzeug zum krimpen, pressen oder verformen eines werkstücks | |
DE202011108753U1 (de) | Handgeführtes Gerät mit einem Bedienungshebel | |
EP3217412B1 (de) | Schalter für eine hand-werkzeugmaschine | |
EP4255686A1 (de) | Griff für eine werkzeugmaschine, werkzeugmaschine und verfahren zum einschalten, ausschalten und verriegeln derselben | |
DE102008014430A1 (de) | Elektrischer Schalter | |
DE202020002472U1 (de) | Auslöser-Schalteinrichtung eines angetriebenen Werkzeugs zum Verhindern eines unbeabsichtigten Auslösevorgangs | |
DE60128356T2 (de) | Mechanische rücksetzvorrichtung für schalter | |
DE2736613C2 (de) | Totmannschalter | |
DE102020129630A1 (de) | Ein verriegelungsmechanismus zum verriegeln einer auslöserbaugruppe eines elektrischen geräts | |
DE4309033C2 (de) | Sicherheitsschaltvorrichtung für elektrische Geräte | |
DE102006060880A1 (de) | Elektrohandwerkzeuggerät | |
DE202017103878U1 (de) | Motorbetriebenes Arbeitsgerät, insbesondere Heckenschere | |
WO2009063014A1 (de) | An einer zange ausgebildete verriegelung | |
DE10254275B4 (de) | Elektrischer Schalter | |
DE102020114634A1 (de) | Steuerbaugruppe zur Verwendung mit einem Elektrowerkzeug | |
DE202020103534U1 (de) | Elektrowerkzeug | |
DE19745100B4 (de) | Elektrischer Schalter | |
DE102005007225B4 (de) | Deckel für Sicherungs-Lasttrennschalter mit verstellbarem Griff | |
EP3808509B1 (de) | Elektrowerkzeug mit einer schaltvorrichtung | |
EP4202347B1 (de) | Verriegelungsvorrichtung zum verbau in einer griffstückbaugruppe einer handfeuerwaffe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20230704 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20240124 |