EP2394801B1 - Knife - Google Patents
Knife Download PDFInfo
- Publication number
- EP2394801B1 EP2394801B1 EP11004822.0A EP11004822A EP2394801B1 EP 2394801 B1 EP2394801 B1 EP 2394801B1 EP 11004822 A EP11004822 A EP 11004822A EP 2394801 B1 EP2394801 B1 EP 2394801B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade carrier
- knife
- cutting
- blade
- housing
- 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.)
- Active
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B5/00—Hand knives with one or more detachable blades
- B26B5/001—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B5/00—Hand knives with one or more detachable blades
- B26B5/001—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use
- B26B5/003—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use comprising retraction means for the blade or the blade holder
Definitions
- the invention relates to a knife according to the preamble of claim 1.
- Such a knife is known from the DE 197 23 279 ,
- the knife comprises a knife housing in which a blade carrier is movably mounted between a safety position and a cutting position.
- the blade In the safety position, the blade is inaccessible to the user of the knife in the housing.
- the blade In the cutting position, the blade protrudes from an opening of the housing.
- the blade carrier can be moved by means of an actuator from the safety position to a first cutting position. By a cutting force on the blade, the blade carrier is movable from the first cutting position to a second cutting position.
- the second cutting position differs from the first cutting position in that the blade carrier is moved back in the actuation position befindaji actuator in the safety position. In the first cutting position, however, the blade carrier can not retreat into the housing when the actuating device is actuated.
- a knife wherein a lever is connected by means of a joint fixed to the blade carrier and with the actuating device.
- the blade carrier By moving an actuator into an actuated position, the blade carrier can be moved from a safety position to a first cutting position.
- a support element attached to the lever In the first cutting position, a support element attached to the lever is supported on the housing.
- the support loses contact with the housing and the blade carrier can move back to the safety position, even if the actuator is arranged in the actuated position.
- the actuating device comprises a connecting device with at least one connecting element.
- the connecting device is connected to the blade carrier with a first joint and connected to an actuating element of the actuating device with a second joint.
- the actuator is movable between a home position and an actuated position. By moving the actuator from the home position to the actuated position, the blade carrier is moved from a safety position to a first cutting position.
- the at least one connecting element of the connecting device is e.g. arranged on the movement of the blade carrier in the first cutting position in a first position. In the first position, the first joint has e.g. a first distance to the second joint.
- the first layer is e.g. a stable location. Stable position means according to the invention that by means of the connecting means forces from the actuating element can be transmitted to the blade carrier, which load the blade carrier in a cutting position.
- the blade carrier is movable from the first cutting position to a second cutting position.
- the connecting device In the second cutting position, the connecting device is moved, for example, in an intermediate position, from which the connecting elements are displaceable in a second position.
- the blade carrier In the second position of the connecting elements, the blade carrier is arranged in the safety position when the actuating device is in the actuation position is located.
- the liner is an unstable situation, for example.
- Unstable position in the sense of the invention means that no forces can be transmitted from the actuating element via the connecting device to the blade carrier, which load the blade carrier into a cutting position.
- a second distance is formed between the first joint and the second joint.
- the first distance is e.g. so large that is moved in operating position of the actuator blade carrier in the cutting position.
- the second distance is e.g. such that, when the actuator is in the actuated position, the blade carrier is located in the safety position.
- the connecting device can be arranged, for example, in the first position when the blade carrier is in the first cutting position.
- the blade carrier moves from the first cutting position to the second cutting position, e.g. the connecting device moves from the first layer into the intermediate layer.
- the blade carrier is loaded by a restoring element in the safety position.
- the blade carrier may be e.g. move back to the safety position as soon as the cutting force no longer holds the blade carrier in the cutting position.
- the connection means moves e.g. in the second position.
- the connecting device may comprise a first connecting element and a second connecting element, wherein the first connecting element and the second connecting element are connected by means of a third articulation. If the first connecting element and the second connecting element are in the first position, the degree of freedom of the connecting elements can be limited so that the first and the second Joint have the first distance from each other.
- the connecting device may be movable in the movement from the first layer to the second layer or in the intermediate layer over a position in which the first joint, the second joint and the third joint are arranged on a straight line.
- the first and / or the second connecting element may be formed according to a further embodiment of a handlebar.
- the handlebar is e.g. rod-shaped.
- the first connecting element and the second connecting element can be arranged very close to one another in the first position and be widely spaced from one another in the second position.
- an obtuse angle may be formed in the first cutting position between a center axis of the first connecting element and a center axis of the second connecting element, and a superposing angle may be formed in the second cutting position.
- the connecting means moves over a stretched position in which the first, second and third joints lie on a straight line.
- the blade carrier is loaded by a restoring force in the safety position. Once the blade carrier is no longer held by the actuator in the cutting position, it gives way to the safety position due to the restoring force. This may be the case, for example, when, after reaching the second cutting position of the blade carrier, the connecting device has been moved into the second position, in which a return movement of the blade carrier is possible when the actuating device is actuated.
- the actuating device is loaded by a restoring force in the basic position. Once the actuator is no longer actuated by the user, it automatically moves to the home position. With the actuator movement associated elements that do not belong to the actuator may also be charged in a certain position due to the restoring force.
- At least one connecting element is associated with a multi-armed lever with at least one first lever arm and a second lever arm.
- the first lever arm can form the first connecting element.
- the second lever arm may e.g. form a control over which the lever is loaded in a certain position or moved to a certain position.
- the blade carrier comprises first control means, which form a first control surface, wherein the first control surface cooperates with a second control surface, which is associated with the connecting device.
- first control surface can cooperate with the second control surface in such a way that the connection device is moved into a specific position.
- the first control surface may cooperate with the second control surface such that the connecting device is moved from the first layer into the intermediate layer.
- the blade carrier is mounted on the housing by means of a bearing device, wherein the blade carrier is rotatory and translationally movable by means of the bearing device. Due to the rotational and translational storage of the Blade carrier perform a complex movement, which has both rotational and translational motion elements.
- the blade carrier can, for example, perform a purely translatory movement. For example, in the movement from the first cutting position to the second cutting position, the movement of the blade carrier is a purely rotational.
- a knife as a whole is designated by the reference numeral 10 in the figures.
- Same reference numerals in the different figures designate also with addition or omission of additions, such as small letters, appropriate parts.
- the knife 10 has a housing 11. In the housing 11, a receiving space 14 is formed.
- the knife 10 comprises a blade carrier 12 to which a blade 13 in a manner not shown releasably fastened.
- the blade carrier 12 is on the blade housing between in the Fig. 1 . 4 and 5 shown safety positions in which the blade 13 is inaccessible to a user in the receiving space 14 of the housing 11 is withdrawn and in the Fig. 2 and 3 shown cutting positions in which the blade 13 protrudes from an opening 15 of the housing 11.
- the mounting of the blade carrier 12 allows a translational movement relative to the housing 11 in the direction x1, x2 and a rotational movement in the direction u1, u2. The translational movement and the rotational movement of the blade carrier 12 are limited.
- a stub axle 20 is fixed, which is mounted in a groove 21 of the housing 11 about an axis a1 pivotally and translationally in the direction x1 and x2 movable.
- the housing 11 and the blade carrier 12 form a joint G1.
- the blade carrier 12 further comprises an extension 22, at the free end portion 23, a roller 24 is rotatably mounted.
- the blade carrier 12 can be moved by means of an actuator 16 between the safety position and the cutting position.
- the actuating device 16 comprises a connecting device 17 and an actuating element 19 which can be actuated by means of a handle, not shown.
- the handle can eg by a slider or a pivotable to the housing 11 between the lever in Fig. 1 shown basic position and in the Fig. 2 to 4 shown operating position to be moved.
- the blade carrier 12 comprises a fastening region 25.
- the blade carrier 12 forms a pivot joint on the fastening region 25 G 2 with a first link 26 of the connecting device 17.
- the first link 26 is thus fixedly connected to the blade carrier 12 and pivotable about a pivot axis a 2 relative to the blade carrier 12 in the direction s1, s2.
- the first link 26 is fixedly connected to a joint G 3 with a second link 27 of a two-armed lever 28 of the connecting device 17.
- the second link 27 is pivotable relative to the first link 26 about a pivot axis a 3 .
- the two-armed lever 28 forms with the actuating element 19 a pivot joint G 4th
- the two-armed lever 28 is pivotally mounted about a pivot axis a 4 relative to the actuating element 19 in the direction w1, w2.
- a fastening eye 30 is formed, on which an end portion 31 of a spring element 32 designed as a tension spring is attached.
- An end region 33 of the spring element 32 is fastened to a fastening means 34 of the blade carrier 12.
- a holding means 35 is formed, to which an end portion 36 of a spring element 37 is attached.
- Another end portion 38 of the spring member 37 is fixed to a holding means 39.
- Bearing surfaces 40 of the actuating element 19 cooperate with guide surfaces 41 of the housing 11, which form a slotted guide for the actuating element 19.
- the guide surfaces 41 guide the actuator 19 in the movement between the home position and the operating position.
- On the housing 11, a rear stop 49 and a front stop 50 is provided for the actuating element 19.
- Fig. 1 is the actuator 19 of the actuator 16 in the basic position.
- the blade carrier 12 is arranged in a first safety position.
- a the center axis m 1 of the first link 26 connecting the pivot axes a 2 and a 3 is arranged at an obtuse angle ⁇ 1 to a central axis m 2 of the second link 27 connecting the pivot axes a 3 and a 4 .
- the pivot axis a2 of the joint G2 has a distance L1 to the pivot axis a4 of the joint G4.
- the handle 17 can be against the spring force of the spring 37 of the user of the in Fig. 1 represented basic position in the in Fig. 2 shown actuating position to be moved.
- Upon movement of the handle 17 in the operating position of the blade carrier 12 is moved to a first cutting position (see Fig. 2 ).
- the angle ⁇ 1 between the first link 26 and the second link 27 remains unchanged.
- the distance L1 remains unchanged.
- the stub axle 20 of the blade carrier 12 is moved from an end region 42 of the groove 21 to an end region 43. While the stub axle 20 abuts in the basic position on a stop surface 44 of the groove 21, the stub axle 20 gets in the actuation position contact with a stop surface 45 of the groove 21st
- the rear end region of the extension 22 exerts a force on the first link 26 with the roller 24 and pivots the first link 26 about the pivot axis a 2 in the direction s 2 into the position according to FIG Fig. 3
- the central axes m 1 and m 2 form in the position according to Fig. 3 an obtuse angle ⁇ 2 .
- the blade 13 remains in the position according to Fig. 3 as long as the cutting force is at least as great as the spring force of the Spring element 32.
- the blade carrier 12 of the spring element 32 in the in Fig. 4 withdrawn shown safety position, wherein the arm 26 pivots about the pivot axis a 2 in the direction s 2 and the arm 27 about the pivot axis a 4 in the direction w 2 .
- the pivot axis a2 and the pivot axis a4 have a distance L2 at which the blade carrier 12 is in the second safety position when the actuating element 19 according to FIG Fig. 4 is arranged in the actuation position.
- the handle element 19 When the operating device 16 is no longer actuated by the user, the handle element 19 is moved back by the spring element 37 in the direction x 2 (see Fig. 5 ). During the movement of the handle element 19 in the direction x 2 , the link 27 pivots about the pivot axis a 4 in the direction w 1 and the link 26 about the pivot axis a 2 in the direction s 1 . The spring element 32 is tensioned. The blade carrier 12 also moves in the direction x 2 until the stub axle 20 bears against the stop surface 44 of the groove 21.
- a second embodiment of the knife is in the Fig. 6 to 21 represented and designated overall by the reference numeral 110.
- the knife comprises a housing 111, with a first housing shell 111 a and a second housing shell 111 b. Further, a third Housing shell 111c and a fourth housing shell 111d provided, which are fastened to the unit of the first housing shell 111 a and second housing shell 111 b.
- the fourth housing shell 111d is provided with an opening 115, which forms the blade outlet opening in the mounted state of the knife 110.
- a carriage 118 In a receiving space 114 of the housing 111, a carriage 118 is movably received. On the carriage 118, a blade carrier 112 is attached by means of a connecting device. The carriage 118 forms with a first link 119 of the connecting device, a first joint G5. By means of a second joint G6, the first link 119 is connected to a second link 120, which is also associated with the connecting device. The second link 120 forms with the blade carrier 112, a third joint G7.
- the carriage 118 includes according to Fig. 20 an upper sliding surface 123 which cooperates with a housing surface 171.
- a slot 125 is formed in the carriage 118.
- the elongated hole 125 has at one end region a shoulder 126 with a holding surface 127.
- a recess 128 is provided in the carriage 118.
- an actuating surface 129 is formed at an end portion of the carriage 118.
- a mounting hook 130 is formed on the carriage 118 and serves to attach a spring 121.
- a handle 117 comprises a strip 131 with a gripping surface 132.
- An extension 133 is formed on an end region of the strip 131.
- the extension 133 comprises a shoulder 134 with a holding surface 135 and an actuating surface 124.
- Another end region of the bar 131 is provided with a recess 136 for forming a pivot joint G8.
- the blade carrier 112 comprises a recess 137, which forms the third joint G7 with a pin 138 of the second link 120.
- a retaining seat 140 of the blade carrier 112 is used for releasably securing a blade 141.
- a flap 142 is pivotally mounted on the blade carrier 112, according to Fig. 18 is the blade 141 between a Surface 143 of the retaining seat 140 and a surface of the flap 142 is held.
- the flap 142 is pivotally attached to the blade carrier 112 about a pivot axis a9.
- a pin 138 of the second link 120 forms with the recess 137 of the blade carrier 112, the third joint G7 with a hinge axis a7. Eccentrically to the hinge axis a7 of the third joint G7, a fastening extension 139 is formed on the pin 138, to which a spring 122 can be fastened.
- a pin 145 of the second link 120 forms with a recess 146 of the first link 119, the second joint G6 with a hinge axis a6.
- a pin 147 is also formed, which forms with the recess 128 of the carriage 118, the first joint G5 with a pivot axis a5.
- the link 119 has a control surface 148, which is formed on a projection 149.
- the first housing shell 111 a comprises a pin 150 which has a first area 151 and a second area 152.
- the first region 151 passes through a recess 136 of the handle 117 and a recess 161 of the fourth housing shell 111 d.
- a nose 153 is integrally formed with a contact surface 154 which cooperates with the projection 149.
- a fixing pin 155 for fixing the spring 122 and a fixing pin 156 for fixing the spring 121 to the first housing shell 111 a are formed.
- the second housing shell 111 b is provided with a recess 157 which is penetrated in the mounted state of the knife 110 of the region 152 and the formation of the fourth joint G8 with a pivot axis a8 is used. Further, the housing shells 111a and 111b have a mounting structure 158 corresponding to a mounting structure on an inner side 159 of the third housing shell 111c to connect the third housing shell 111c to the first housing shell 111a and second housing shell 111b Fasten.
- the fourth housing shell 111d comprises a projection 160 with the recess 161.
- the position of the blade carrier 112 relative to the carriage 118 is shown without housing 111 for clarity.
- the pin 147 of the first link 119 passes through the recess 128 of the carriage 118 and is pivotally mounted there.
- the pin 138 passes through the slot 125 and is guided in the slot 125.
- the pin 138 is pivotally mounted on the blade carrier 112.
- the blade carrier 112 can between a example in the FIGS. 20 and 21 shown primary position and one example in the FIGS. 22 and 23 shown secondary position to be moved.
- an imaginary first straight line 162 connecting the first pivot joint G5 and the second pivot joint G6 and an imaginary second straight line 163 connecting the second pivot joint G6 and the third pivot joint G7 form an angle ⁇ 3.
- the first straight line 162 and the second straight line 163 form an angle ⁇ 4.
- the carriage 118 is arranged in a rest position.
- the carriage 118 can be moved from the rest position to the operating position, which in the 8 and 9 is shown.
- the carriage 118 is moved back to the rest position by the first spring 121, whereby the handle 117 is moved in the direction t1 by the cooperating surfaces 124 and 129.
- the carriage 118 is in the rest position and the blade 141 is in the safety position arranged in the receiving space 114.
- the blade carrier 112 is located in the primary position to the carriage 118 and is biased by the spring 122 back to the rest position.
- An arm 164 of the second link 120 is supported on a surface 165 of the carriage 118.
- the carriage 118 When the handle 117 according to the 8 and 9 is actuated, the carriage 118 is in the operating position.
- the blade carrier 112 maintains the primary position to the carriage 118 unchanged, so that the blade 141 exits from a front opening 115 of the housing 111.
- the position of the blade carrier 112 according to the 8 and 9 is referred to as the first cutting position.
- the eccentric arrangement of the spring 122 on the attachment extension 139 in the first cutting position is not relevant. In the second cutting position, however, the lever arm is larger and loads the blade carrier 112 in the secondary position.
- the blade carrier 112 By a force acting through the cut on the blade 141, the blade carrier 112 is pivoted, wherein a pivot contour 170 of the blade carrier 112 cooperates with the housing surface 171 and forms a pivot point.
- a shoulder surface 172 of the second link 120 is brought into abutment with a holding surface 127 of the carriage 118 (see FIGS 10 and 11 ) to prevent unwanted movement of the blade carrier 112 to the safety position during the cutting operation.
- the first straight line 162 moves relative to the second straight line 163 beyond a dead center position (see FIGS 10 and 11 ). In this case, the angle change described above takes place between the first straight line 162 and the second straight line 163.
- This position of the blade carrier 112 is referred to as the second cutting position.
- the secondary position is in the FIGS. 14 and 15 shown.
- the blade 113 In the secondary position, the blade 113 is located in the safety position, although the handle 117 according to the FIGS. 14 and 15 operated and the carriage 118 is in the operating position. In the safety position, the blade 141 is arranged in the receiving space 114, so that the user can not injure himself on the blade 141.
- the handle 117 is moved indirectly from the carriage 118 to the unactuated position (see Figs FIGS. 16 and 17 ) emotional.
- the carriage 118 is moved back by the first spring 121 in the rest position, while the rearward movement of the blade carrier 112 is prevented by a stop 166, to which an abutment surface 167 of the blade carrier 112 according to the FIGS. 16 and 17 is applied.
- the contact surface 154 of a nose 153 formed on the housing 111 cooperates with a control surface 148 of a control cam 149 of the first link 119.
- a slide operable from outside the housing may be provided to move the slide 118 between the rest position and the actuated position.
- the blade carrier 112 is fixedly connected to the carriage 118 by means of the connecting device.
Description
Die Erfindung betrifft ein Messer gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a knife according to the preamble of
Ein solches Messer ist bekannt aus der
In der
Es war Aufgabe der Erfindung ein Messer zu schaffen, welches eine einfache Konstruktion ermöglicht und dennoch eine sichere Handhabung gewährleistet.It was an object of the invention to provide a knife which allows a simple construction and yet ensures safe handling.
Die Aufgabe wird gelöst durch ein Messer mit den Merkmalen des Anspruchs 1.The object is achieved by a knife having the features of
Die Betätigungsvorrichtung umfasst eine Verbindungseinrichtung mit wenigstens einem Verbindungselement. Die Verbindungseinrichtung ist mit einem ersten Gelenk mit dem Klingenträger verbunden und mit einem zweiten Gelenk mit einem Betätigungselement der Betätigungsvorrichtung verbunden.The actuating device comprises a connecting device with at least one connecting element. The connecting device is connected to the blade carrier with a first joint and connected to an actuating element of the actuating device with a second joint.
Die Betätigungsvorrichtung ist zwischen einer Grundposition und einer Betätigungsposition bewegbar. Durch eine Bewegung der Betätigungsvorrichtung von der Grundposition in die Betätigungsposition wird der Klingenträger aus einer Sicherheitsposition in eine erste Schneidposition bewegt. Das wenigstens eine Verbindungselement der Verbindungseinrichtung ist z.B. bei der Bewegung des Klingenträgers in die erste Schneidposition in einer ersten Lage angeordnet. In der ersten Lage weist das erste Gelenk z.B. einen ersten Abstand zu dem zweiten Gelenk auf. Die erste Lage ist z.B. eine stabile Lage. Stabile Lage bedeutet im Sinne der Erfindung, dass mittels der Verbindungseinrichtung Kräfte von dem Betätigungselement auf den Klingenträger übertragbar sind, welche den Klingenträger in eine Schneidposition belasten.The actuator is movable between a home position and an actuated position. By moving the actuator from the home position to the actuated position, the blade carrier is moved from a safety position to a first cutting position. The at least one connecting element of the connecting device is e.g. arranged on the movement of the blade carrier in the first cutting position in a first position. In the first position, the first joint has e.g. a first distance to the second joint. The first layer is e.g. a stable location. Stable position means according to the invention that by means of the connecting means forces from the actuating element can be transmitted to the blade carrier, which load the blade carrier in a cutting position.
Der Klingenträger ist von der ersten Schneidposition in eine zweite Schneidposition bewegbar. In der zweiten Schneidposition ist die Verbindungseinrichtung z.B. in eine Zwischenlage bewegt, aus welcher die Verbindungselemente in eine zweite Lage verlagerbar sind. In der zweiten Lage der Verbindungselemente ist der Klingenträger in der Sicherheitsposition angeordnet, wenn die Betätigungsvorrichtung sich in der Betätigungsposition befindet. Die Zwischenlage ist z.B. eine instabile Lage. Instabile Lage bedeutet im Sinne der Erfindung, dass keine Kräfte von dem Betätigungselement über die Verbindungseinrichtung auf den Klingenträger übertragbar sind, welche den Klingenträger in eine Schneidposition belasten. In der zweiten Lage ist zwischen dem ersten Gelenk und dem zweiten Gelenk ein zweiter Abstand gebildet.The blade carrier is movable from the first cutting position to a second cutting position. In the second cutting position, the connecting device is moved, for example, in an intermediate position, from which the connecting elements are displaceable in a second position. In the second position of the connecting elements, the blade carrier is arranged in the safety position when the actuating device is in the actuation position is located. The liner is an unstable situation, for example. Unstable position in the sense of the invention means that no forces can be transmitted from the actuating element via the connecting device to the blade carrier, which load the blade carrier into a cutting position. In the second position, a second distance is formed between the first joint and the second joint.
Der erste Abstand ist z.B. so groß, dass bei in Betätigungsposition befindlicher Betätigungsvorrichtung der Klingenträger in die Schneidposition bewegt ist. Der zweite Abstand ist z.B. derart bemessen, dass, wenn sich die Betätigungsvorrichtung in der Betätigungsposition befindet, der Klingenträger in der Sicherheitsposition angeordnet ist.The first distance is e.g. so large that is moved in operating position of the actuator blade carrier in the cutting position. The second distance is e.g. such that, when the actuator is in the actuated position, the blade carrier is located in the safety position.
Die Verbindungseinrichtung kann beispielsweise in der ersten Lage angeordnet sein, wenn der Klingenträger sich in der ersten Schneidposition befindet. Wenn durch eine Schneidkraft der Klingenträger von der ersten Schneidposition in die zweite Schneidposition bewegt, wird z.B. die Verbindungseinrichtung von der ersten Lage in die Zwischenlage bewegt. Der Klingenträger ist von einem Rückstellelement in die Sicherheitsposition belastet. In der Zwischenlage der Verbindungseinrichtung kann sich der Klingenträger z.B. in die Sicherheitsposition zurückbewegen, sobald die Schneidkraft den Klingenträger nicht mehr in der Schneidposition hält. Dabei bewegt sich die Verbindungseinrichtung z.B. in die zweite Lage.The connecting device can be arranged, for example, in the first position when the blade carrier is in the first cutting position. When, by a cutting force, the blade carrier moves from the first cutting position to the second cutting position, e.g. the connecting device moves from the first layer into the intermediate layer. The blade carrier is loaded by a restoring element in the safety position. In the interposition of the connecting device, the blade carrier may be e.g. move back to the safety position as soon as the cutting force no longer holds the blade carrier in the cutting position. At this time, the connection means moves e.g. in the second position.
Die Verbindungseinrichtung kann gemäß einer ersten Ausführungsform ein erstes Verbindungselement und ein zweites Verbindungselement umfassen, wobei das erste Verbindungselement und das zweite Verbindungselement mittels eines dritten Gelenks verbunden sind. Befinden sich das erste Verbindungselement und das zweite Verbindungselement in der ersten Lage, kann der Freiheitsgrad der Verbindungselemente so beschränkt sein, dass das erste und das zweite Gelenk den ersten Abstand zueinander aufweisen. Die Verbindungsvorrichtung kann bei der Bewegung von der ersten Lage in die zweite Lage oder in die Zwischenlage über eine Position hinwegbewegbar sein, in welcher das erste Gelenk, das zweite Gelenk und das dritte Gelenk auf einer Geraden angeordnet sind.According to a first embodiment, the connecting device may comprise a first connecting element and a second connecting element, wherein the first connecting element and the second connecting element are connected by means of a third articulation. If the first connecting element and the second connecting element are in the first position, the degree of freedom of the connecting elements can be limited so that the first and the second Joint have the first distance from each other. The connecting device may be movable in the movement from the first layer to the second layer or in the intermediate layer over a position in which the first joint, the second joint and the third joint are arranged on a straight line.
Das erste und / oder das zweite Verbindungselement können gemäß einer weiteren Ausführungsform von einem Lenker gebildet sein. Der Lenker ist z.B. stabförmig ausgebildet. Durch die Stabform können das erste Verbindungselement und das zweite Verbindungselement in der ersten Lage sehr nah beieinander angeordnet sein und in der zweiten Lage weit voneinander beabstandet sein.The first and / or the second connecting element may be formed according to a further embodiment of a handlebar. The handlebar is e.g. rod-shaped. As a result of the rod shape, the first connecting element and the second connecting element can be arranged very close to one another in the first position and be widely spaced from one another in the second position.
Zwischen einer Mittelachse des ersten Verbindungselements und einer Mittelachse des zweiten Verbindungselements kann gemäß einer weiteren Ausführungsform in der ersten Schneidposition ein stumpfer Winkel gebildet sein und in der zweiten Schneidposition ein überstumpfer Winkel gebildet sein. Bei der Bewegung von der ersten Schneidposition in die zweite Schneidposition bewegt sich die Verbindungseinrichtung übe eine gestreckte Lage hinweg, in welcher das erste, das zweite und das dritte Gelenk auf einer Geraden liegen.According to a further embodiment, an obtuse angle may be formed in the first cutting position between a center axis of the first connecting element and a center axis of the second connecting element, and a superposing angle may be formed in the second cutting position. In the movement from the first cutting position to the second cutting position, the connecting means moves over a stretched position in which the first, second and third joints lie on a straight line.
Gemäß einer weiteren Ausgestaltung der Erfindung ist der Klingenträger von einer Rückstellkraft in die Sicherheitsposition belastet. Sobald der Klingenträger nicht mehr von der Betätigungsvorrichtung in der Schneidposition gehalten wird, weicht er aufgrund der Rückstellkraft in die Sicherheitsposition zurück. Das kann z.B. dann der Fall sein, wenn nach Erreichen der zweiten Schneidposition des Klingenträgers die Verbindungseinrichtung in die zweite Lage bewegt wurde, in welcher bei betätigter Betätigungsvorrichtung eine Rückbewegung des Klingenträgers möglich ist.According to a further embodiment of the invention, the blade carrier is loaded by a restoring force in the safety position. Once the blade carrier is no longer held by the actuator in the cutting position, it gives way to the safety position due to the restoring force. This may be the case, for example, when, after reaching the second cutting position of the blade carrier, the connecting device has been moved into the second position, in which a return movement of the blade carrier is possible when the actuating device is actuated.
Einer weiteren Ausgestaltung der Erfindung gemäß ist die Betätigungsvorrichtung von einer Rückstellkraft in die Grundposition belastet. Sobald die Betätigungsvorrichtung von dem Benutzer nicht mehr betätigt wird, bewegt sie sich automatisch in die Grundposition. Mit der Betätigungsvorrichtung bewegungsverbundene Elemente, die nicht zur Betätigungsvorrichtung gehören, können aufgrund der Rückstellkraft ebenfalls in eine bestimmte Position belastet sein.According to a further embodiment of the invention, the actuating device is loaded by a restoring force in the basic position. Once the actuator is no longer actuated by the user, it automatically moves to the home position. With the actuator movement associated elements that do not belong to the actuator may also be charged in a certain position due to the restoring force.
Einer weiteren Ausführungsform gemäß ist wenigstens ein Verbindungselement einem mehrarmigen Hebel mit wenigstens einem ersten Hebelarm und einem zweiten Hebelarm zugeordnet. Z.B. kann der erste Hebelarm das erste Verbindungselement bilden. Der zweite Hebelarm kann z.B. ein Steuerelement bilden, über das der Hebel in eine bestimmte Position belastet ist oder in eine bestimmte Position bewegt wird.According to another embodiment, at least one connecting element is associated with a multi-armed lever with at least one first lever arm and a second lever arm. For example, the first lever arm can form the first connecting element. The second lever arm may e.g. form a control over which the lever is loaded in a certain position or moved to a certain position.
Einer weiteren Ausgestaltung der Erfindung gemäß umfasst der Klingenträger erste Steuermittel, die eine erste Steuerfläche ausbilden, wobei die erste Steuerfläche mit einer zweiten Steuerfläche zusammenwirkt, die der Verbindungseinrichtung zugeordnet ist. Bei einer Bewegung des Klingenträgers kann die erste Steuerfläche derart mit der zweiten Steuerfläche zusammenwirken, dass die Verbindungseinrichtung in eine bestimmte Position bewegt wird. Z.B. kann bei der Bewegung des Klingenträgers von der ersten Schneidposition in die zweite Schneidposition die erste Steuerfläche mit der zweiten Steuerfläche derart zusammenwirken, dass die Verbindungseinrichtung aus der ersten Lage in die Zwischenlage bewegt wird.According to a further embodiment of the invention, the blade carrier comprises first control means, which form a first control surface, wherein the first control surface cooperates with a second control surface, which is associated with the connecting device. During a movement of the blade carrier, the first control surface can cooperate with the second control surface in such a way that the connection device is moved into a specific position. For example, For example, during the movement of the blade carrier from the first cutting position to the second cutting position, the first control surface may cooperate with the second control surface such that the connecting device is moved from the first layer into the intermediate layer.
Gemäß einer weiteren Ausführungsform ist der Klingenträger mittels einer Lagervorrichtung an dem Gehäuse gelagert, wobei der Klingenträger mittels der Lagervorrichtung rotatorisch und translatorisch bewegbar ist. Durch die rotatorische und translatorische Lagerung kann der Klingenträger eine komplexe Bewegung ausführen, die sowohl rotatorische, als auch translatorische Bewegungselemente aufweist. Bei der Bewegung von der Sicherheitsposition in die Schneidposition kann der Klingenträger z.B. eine rein translatorische Bewegung vollziehen. Z.B. bei der Bewegung von der ersten Schneidposition in die zweite Schneidposition ist die Bewegung des Klingenträgers eine rein rotatorische.According to a further embodiment, the blade carrier is mounted on the housing by means of a bearing device, wherein the blade carrier is rotatory and translationally movable by means of the bearing device. Due to the rotational and translational storage of the Blade carrier perform a complex movement, which has both rotational and translational motion elements. When moving from the safety position to the cutting position, the blade carrier can, for example, perform a purely translatory movement. For example, in the movement from the first cutting position to the second cutting position, the movement of the blade carrier is a purely rotational.
Weitere Vorteile des Messers ergeben sich anhand eines in den Figuren dargestellten Ausführungsbeispiels. Es zeigen:
-
Fig. 1a eine schematische teilweise geschnittene Seitenansicht des Messers, wobei der Klingenträger in einer ersten Sicherheitsposition, die Betätigungsvorrichtung in der Grundposition und die Verbindungseinrichtung in der ersten Lage dargestellt sind, -
Fig. 1 b eine schematische Ansicht der Mittelachsen der Verbindungselemente der Verbindungseinrichtung in der ersten Lage, -
Fig. 2 das Messer in Anlehnung anFig. 1 , wobei der Klingenträger in einer ersten Schneidposition, die Betätigungsvorrichtung in der Betätigungsposition und die Verbindungseinrichtung in der ersten Lage dargestellt sind, -
Fig. 3a das Messer in Anlehnung anFig. 1 , wobei der Klingenträger in einer zweiten Schneidposition, die Betätigungsvorrichtung in einer Betätigungsposition und die Verbindungseinrichtung in einer Zwischenlage angeordnet ist, -
Fig. 3b in Anlehnung anFig. 1b die Verbindungselemente in der Zwischenlage, -
Fig. 4a das Messer in Anlehnung anFig. 1 , wobei der Klingenträger in einer zweiten Sicherheitsposition, die Betätigungsvorrichtung in der Betätigungsposition und die Verbindungseinrichtung in einer zweiten Lage dargestellt sind, und -
Fig. 4b in Anlehnung anFig. 1 b die Verbindungselemente in der zweiten Lage, -
Fig. 5 das Messer in Anlehnung anFig. 1 , wobei der Klingenträger in der Sicherheitsposition, die Betätigungsvorrichtung nahe der Grundposition und die Verbindungseinrichtung in dem zweiten Positionsbereich angeordnet sind. -
Fig. 6 eine schematische Längsschnittdarstellung eines zweiten Ausführungsbeispiels des erfindungsgemäßen Messers, wobei sich ein Schlitten in der Ruheposition befindet, -
Fig. 7 eine schematische Längsschnittdarstellung des Messers gemäßFig. 6 in einer anderen Schnittebene, -
Fig. 8 eine Längsschnittdarstellung des Messers in der Schneidposition, wobei sich der Schlitten in der Betätigungsposition befindet, -
Fig. 9 eine Längsschnittdarstellung des Messers gemäßFig. 8 in der Schneidposition, -
Fig. 10 eine Längsschnittdarstellung des Messers, wobei der Klingenträger durch eine Schneidkraft verschwenkt ist, -
Fig. 11 eine Längsschnittdarstellung des Messers gemäßFig. 10 , wobei der Klingenträger durch eine Schneidkraft verschwenkt ist, -
Fig. 12 eine Längsschnittdarstellung des Messers, wobei der Klingenträger durch die Schneidkraft weiter verschwenkt ist, -
Fig. 13 eine Längsschnittdarstellung des Messers gemäßFig. 12 , wobei der Klingenträger durch die Schneidkraft weiter verschwenkt ist, -
Fig. 14 eine Längsschnittdarstellung des Messers, wobei der Klingenträger relativ zu dem Schlitten in eine sekundäre Position bewegt ist und sich bei betätigter Handhabe in der Sicherheitsposition befindet, -
Fig. 15 eine Längsschnittdarstellung des Messers gemäßFig. 14 , wobei der Klingenträger in die Sicherheitsposition bewegt ist, -
Fig. 16 eine Längsschnittdarstellung des Messers, wobei sich der Schlitten zwischen der Betätigungsposition und der Ruheposition befindet, -
Fig. 17 eine Längsschnittdarstellung des Messers gemäßFig. 16 , -
Fig. 18 eine Explosionsdarstellung des Messers, -
Fig. 19 eine Explosionsdarstellung des Schlittens, des ersten Lenkers, des zweiten Lenkers sowie des Klingenträgers, -
Fig. 20 eine Seitenansicht des Klingenträgers und des Schlittens in der primären Position, wobei das Gehäuse nicht dargestellt ist, -
Fig. 21 eine Ansicht einer gegenüberliegenden Seite des Klingenträgers und des Schlittens in Bezug auf die Position gemäßFig. 20 , -
Fig. 22 eine Seitenansicht des Klingenträgers und des Schlittens in der sekundären Position, wobei das Gehäuse nicht dargestellt ist, -
Fig. 21 eine Ansicht einer gegenüberliegenden Seite des Klingenträgers und des Schlittens in Bezug auf die Position gemäßFig. 22 .
-
Fig. 1a a schematic partially sectioned side view of the knife, wherein the blade carrier in a first safety position, the actuator in the home position and the connecting device are shown in the first position, -
Fig. 1 b a schematic view of the central axes of the connecting elements of the connecting device in the first position, -
Fig. 2 the knife in accordance withFig. 1 wherein the blade carrier is shown in a first cutting position, the actuating device in the actuating position and the connecting device in the first position, -
Fig. 3a the knife in accordance withFig. 1 wherein the blade carrier is arranged in a second cutting position, the actuating device in an actuating position and the connecting device in an intermediate position, -
Fig. 3b based onFig. 1b the connecting elements in the intermediate layer, -
Fig. 4a the knife in accordance withFig. 1 , wherein the blade carrier in a second safety position, the actuating device in the operating position and the connecting device are shown in a second position, and -
Fig. 4b based onFig. 1 b the connecting elements in the second position, -
Fig. 5 the knife in accordance withFig. 1 wherein the blade carrier in the safety position, the actuator near the home position and the connecting means are arranged in the second position range. -
Fig. 6 a schematic longitudinal sectional view of a second embodiment of the knife according to the invention, wherein a carriage is in the rest position, -
Fig. 7 a schematic longitudinal sectional view of the knife according toFig. 6 in another cutting plane, -
Fig. 8 a longitudinal sectional view of the knife in the cutting position, wherein the carriage is in the operating position, -
Fig. 9 a longitudinal sectional view of the knife according toFig. 8 in the cutting position, -
Fig. 10 a longitudinal sectional view of the knife, wherein the blade carrier is pivoted by a cutting force, -
Fig. 11 a longitudinal sectional view of the knife according toFig. 10 wherein the blade carrier is pivoted by a cutting force, -
Fig. 12 a longitudinal sectional view of the knife, wherein the blade carrier is further pivoted by the cutting force, -
Fig. 13 a longitudinal sectional view of the knife according toFig. 12 wherein the blade carrier is further pivoted by the cutting force, -
Fig. 14 4 is a longitudinal sectional view of the blade with the blade carrier moved to a secondary position relative to the carriage and in the safety position when the handle is actuated; -
Fig. 15 a longitudinal sectional view of the knife according toFig. 14 with the blade carrier moved to the safety position, -
Fig. 16 a longitudinal sectional view of the knife, wherein the carriage is between the operating position and the rest position, -
Fig. 17 a longitudinal sectional view of the knife according toFig. 16 . -
Fig. 18 an exploded view of the knife, -
Fig. 19 an exploded view of the carriage, the first link, the second link and the blade carrier, -
Fig. 20 a side view of the blade carrier and the carriage in the primary position, wherein the housing is not shown, -
Fig. 21 a view of an opposite side of the blade carrier and the carriage with respect to the position according toFig. 20 . -
Fig. 22 a side view of the blade carrier and the carriage in the secondary position, wherein the housing is not shown, -
Fig. 21 a view of an opposite side of the blade carrier and the carriage with respect to the position according toFig. 22 ,
Ein Messer insgesamt wird in den Figuren mit dem Bezugszeichen 10 bezeichnet. Gleiche Bezugszeichen in den unterschiedlichen Figuren bezeichnen auch bei Hinzufügung oder Weglassung von Zusätzen, wie z.B. kleinen Buchstaben, entsprechende Teile.A knife as a whole is designated by the
Das Messer 10 weist ein Gehäuse 11 auf. In dem Gehäuse 11 ist ein Aufnahmeraum 14 ausgebildet. Das Messer 10 umfasst einen Klingenträger 12, an welchem eine Klinge 13 in nicht dargestellter Weise lösbar befestigbar ist. Der Klingenträger 12 ist an dem Messergehäuse zwischen in den
An dem Klingenträger 12 ist ein Achsstumpf 20 befestigt, welcher in einer Nut 21 des Gehäuses 11 um eine Achse a1 schwenkbar und translatorisch in Richtung x1 und x2 bewegbar gelagert ist. Das Gehäuse 11 und der Klingenträger 12 bilden ein Gelenk G1. Der Klingenträger 12 umfasst ferner einen Fortsatz 22, an dessen freiem Endbereich 23 eine Rolle 24 drehbar gelagert ist.On the
Der Klingenträger 12 kann mittels einer Betätigungsvorrichtung 16 zwischen der Sicherheitsposition und der Schneidposition bewegt werden. Die Betätigungsvorrichtung 16 umfasst eine Verbindungseinrichtung 17 und ein Betätigungselement 19, das mittels einer nicht dargestellten Handhabe betätigbar ist. Die Handhabe kann z.B. von einem Schieber oder einem zu dem Gehäuse 11 verschwenkbaren Hebel zwischen der in
Der Klingenträger 12 umfasst einen Befestigungsbereich 25. An dem Befestigungsbereich 25 bildet der Klingenträger 12 ein Schwenkgelenk G2 mit einem ersten Lenker 26 der Verbindungseinrichtung 17. Der erste Lenker 26 ist auf diese Weise fest mit dem Klingenträger 12 verbunden und um eine Schwenkachse a2 relativ zu dem Klingenträger 12 in Richtung s1, s2 schwenkbar.The
Der erste Lenker 26 ist mit einem Gelenk G3 mit einem zweiten Lenker 27 eines zweiarmigen Hebels 28 der Verbindungseinrichtung 17 fest verbunden. Der zweite Lenker 27 ist relativ zu dem ersten Lenker 26 um eine Schwenkachse a3 schwenkbar. Der zweiarmige Hebel 28 bildet mit dem Betätigungselement 19 ein Schwenkgelenk G4. Der zweiarmige Hebel 28 ist um eine Schwenkachse a4 relativ zu dem Betätigungselement 19 in Richtung w1, w2 schwenkbar gelagert.The
An dem zweiten Hebelarm 29 ist eine Befestigungsöse 30 ausgebildet, an welcher ein Endbereich 31 eines als Zugfeder ausgebildeten Federelements 32 befestigt ist. Ein Endbereich 33 des Federelements 32 ist an einem Befestigungsmittel 34 des Klingenträgers 12 befestigt. An dem Betätigungselement 19 ist ein Haltemittel 35 ausgebildet, an welchem ein Endbereich 36 eines Federelements 37 befestigt ist. Ein anderer Endbereich 38 des Federelements 37 ist an einem Haltemittel 39 befestigt. Lagerflächen 40 des Betätigungselements 19 wirken mit Führungsflächen 41 des Gehäuses 11 zusammen, welche eine Kulissenführung für das Betätigungselement 19 bilden. Die Führungsflächen 41 führen das Betätigungselement 19 bei der Bewegung zwischen der Grundposition und der Betätigungsposition. An dem Gehäuse 11 ist ein hinterer Anschlag 49 sowie ein vorderer Anschlag 50 für das Betätigungselement 19 vorgesehen.At the
In
Die Handhabeeinrichtung 17 kann entgegen der Federkraft der Feder 37 von dem Benutzer von der in
Der Achsstumpf 20 des Klingenträgers 12 wird von einem Endbereich 42 der Nut 21 zu einem Endbereich 43 bewegt. Während der Achsstumpf 20 in der Grundposition an eine Anschlagfläche 44 der Nut 21 anliegt, bekommt der Achsstumpf 20 in der Betätigungsposition Kontakt zu einer Anschlagfläche 45 der Nut 21.The
In der Position der Verbindungseinrichtung 17 gemäß der
Wirkt gemäß
Die Klinge 13 verbleibt in der Position gemäß
Zwischen dem ersten Lenker 26 und dem zweiten Lenker 27 wird in der Position gemäß
Wenn die Betätigungsvorrichtung 16 von dem Benutzer nicht mehr betätigt wird, wird das Handhabeelement 19 von dem Federelement 37 in Richtung x2 zurückbewegt (siehe
Wird das Handhabeelement 19 weiter in Richtung x2 bewegt, bis eine Kontaktfläche 48 des Handhabeelements 19 an einer Innenfläche 49 des Gehäuses anliegt, wird das Federelement 32 weiter gespannt, wobei es den zweiarmigen Hebel 28 über den zweiten Hebelarm 29 in Richtung w1 in die in
Ein zweites Ausführungsbeispiel des Messers ist in den
Mit Bezug auf die Explosionsdarstellung des Messers gemäß
In einem Aufnahmeraum 114 des Gehäuses 111 ist ein Schlitten 118 bewegbar aufgenommen. An dem Schlitten 118 ist ein Klingenträger 112 mittels einer Verbindungseinrichtung befestigt. Der Schlitten 118 bildet mit einem ersten Lenker 119 der Verbindungsvorrichtung ein erstes Gelenk G5. Mittels eines zweiten Gelenks G6 ist der erste Lenker 119 mit einem zweiten Lenker 120 verbunden, welcher ebenfalls der Verbindungseinrichtung zugeordnet ist. Der zweite Lenker 120 bildet mit dem Klingenträger 112 ein drittes Gelenk G7.In a receiving
Der Schlitten 118 umfasst gemäß
Eine Handhabe 117 umfasst eine Leiste 131 mit einer Grifffläche 132. An einem Endbereich der Leiste 131 ist ein Fortsatz 133 ausgebildet. Der Fortsatz 133 umfasst eine Schulter 134 mit einer Haltefläche 135 sowie eine Betätigungsfläche 124. Ein anderer Endbereich der Leiste 131 ist mit einer Aussparung 136 zur Bildung eines Schwenkgelenks G8 versehen.A
Der Klingenträger 112 umfasst eine Aussparung 137, die mit einem Zapfen 138 des zweiten Lenkers 120 das dritte Gelenk G7 bildet. Ein Haltesitz 140 des Klingenträgers 112 dient der lösbaren Befestigung einer Klinge 141. An dem Klingenträger 112 ist eine Klappe 142 schwenkbar befestigt. Gemäß
Ein Zapfen 138 des zweiten Lenkers 120 bildet mit der Aussparung 137 des Klingenträgers 112 das dritte Gelenk G7 mit einer Gelenkachse a7. Exzentrisch zu der Gelenkachse a7 des dritten Gelenks G7 ist an dem Zapfen 138 ein Befestigungsfortsatz 139 ausgebildet, an welchem eine Feder 122 befestigbar ist. Ein Zapfen 145 des zweiten Lenkers 120 bildet mit einer Aussparung 146 des ersten Lenkers 119 das zweite Gelenk G6 mit einer Gelenkachse a6. An dem Lenker 119 ist außerdem ein Zapfen 147 ausgebildet, welcher mit der Aussparung 128 des Schlittens 118 das erste Gelenk G5 mit einer Schwenkachse a5 bildet. Zudem weist der Lenker 119 eine Steuerfläche 148 auf, die an einem Vorsprung 149 ausgebildet ist.A
Die erste Gehäuseschale 111a umfasst einen Zapfen 150 der einen ersten Bereich 151 und einen zweiten Bereich 152 aufweist. Im montierten Zustand des Messers 110 durchgreift der erste Bereich 151 eine Aussparung 136 der Handhabe 117 und eine Aussparung 161 der vierten Gehäuseschale 111 d. An einem hinteren Endbereich der ersten Gehäuseschale 111a ist eine Nase 153 mit einer Kontaktfläche 154 angeformt, die mit dem Vorsprung 149 zusammenwirkt. Ferner sind ein Befestigungszapfen 155 zur Befestigung der Feder 122 und ein Befestigungszapfen 156 zur Befestigung der Feder 121 an der ersten Gehäuseschale 111 a angeformt.The
Die zweite Gehäuseschale 111 b ist mit einer Aussparung 157 versehen, die in dem montierten Zustand des Messers 110 von dem Bereich 152 durchgriffen wird und der Ausbildung des vierten Gelenks G8 mit einer Schwenkachse a8 dient. Ferner weisen die Gehäuseschalen 111a und 111b eine Befestigungsstruktur 158 auf, die mit einer Befestigungsstruktur an einer Innenseite 159 der dritten Gehäuseschale 111c korrespondiert, um die dritte Gehäuseschale 111c an der Einheit aus erster Gehäuseschale 111 a und zweiter Gehäuseschale 111 b zu befestigen. Die vierte Gehäuseschale 111d umfasst einen Ansatz 160 mit der Aussparung 161.The
In den
Der Klingenträger 112 kann zwischen einer z.B. in den
Anhand der
Solange die Handhabe 117 nicht betätigt ist, befindet sich der Schlitten 118 in der Ruheposition und die Klinge 141 ist in der Sicherheitsposition in dem Aufnahmeraum 114 angeordnet. Der Klingenträger 112 ist in der primären Position zu dem Schlitten 118 angeordnet und wird von der Feder 122 zurück in die Ruheposition belastet. Ein Arm 164 des zweiten Lenkers 120 stützt sich auf einer Fläche 165 des Schlittens 118 ab.As long as the
Wenn die Handhabe 117 gemäß der
Aufgrund des geringen Hebelarms der Federkraft der Feder 122 ist die exzentrische Anordnung der Feder 122 an dem Befestigungsfortsatz 139 in der ersten Schneidposition nicht relevant. In der zweiten Schneidposition ist der Hebelarm hingegen größer und belastet den Klingenträger 112 in die sekundäre Position.Due to the small lever arm of the spring force of the
Durch eine Kraft, welche durch den Schnitt auf die Klinge 141 wirkt, wird der Klingenträger 112 geschwenkt, wobei eine Schwenkkontur 170 des Klingenträgers 112 mit der Gehäusefläche 171 zusammenwirkt und einen Schwenkpunkt ausbildet. Bei dem Schwenkvorgang des Klingenträgers 112 wird eine Schulterfläche 172 des zweiten Lenkers 120 in Anlage mit einer Haltefläche 127 des Schlittens 118 gebracht (siehe die
Erst wenn die Schneidkraft auf die Klinge 141 nachlässt, kann sich die Schulterfläche 172 aus dem Eingriff mit der Haltefläche 127 bewegen wodurch der Klingenträger 112 von der Feder 122 in die sekundäre Position bewegt werden kann. Die sekundäre Position ist in den
In der sekundären Position ist die Klinge 113 in der Sicherheitsposition angeordnet, obwohl die Handhabe 117 gemäß der
Bei nachlassender Kraft auf die Handhabe 117 wird die Handhabe 117 indirekt von dem Schlitten 118 in die unbetätigte Position (siehe die
Es sei noch erwähnt, dass alternativ zu der Handhabe 117 ein von außerhalb des Gehäuses betätigbarer Schieber vorgesehen sein kann, um den Schlitten 118 zwischen der Ruheposition und der Betätigungsposition zu bewegen.It should be noted that as an alternative to the
Ferner sei erwähnt, dass der Klingenträger 112 mittels der Verbindungseinrichtung fest mit dem Schlitten 118 verbunden ist.It should also be mentioned that the
Claims (10)
- Knife, comprising a housing (11, 111) in which a blade holder (12, 112) is mounted so as to be movable between at least one safety position and at least one cutting position, a blade (13, 141) retained on the blade holder (12, 112) being disposed in the housing (11, 111) inaccessible to the user when in the safety position, and the blade (13, 141) extends at least partially out of the housing (11, 111) when in the cutting position, having an actuating device (16), and a movement of the actuating device (16) from a starting position into an actuating position enables the blade holder (12, 112) to be moved from the safety position into a first cutting position, and a connecting mechanism (17) is fixedly connected to the blade holder (12, 112) by means of a first pivot link (G2, G7) and to an actuating element (19, 118) of the actuating device(16) by means of a second pivot link (G4, G5), and the first pivot link (G2, G7) and the second pivot link (G4, G5) are spaced at a first distance (L1) when the connecting mechanism (17) is in a first position and at a second distance (L2) when in a second position, characterised in that
when the actuating device (16) is in the actuating position, the blade holder (12, 112) is disposed in a cutting position when the connecting mechanism (17) is in the first position and in a safety position when in the second position. - Knife as claimed in claim 1, characterised in that a movement of the blade holder (12) from the first cutting position into a second cutting position enables the connecting mechanism (17) to be moved from the first position into an intermediate position, and when the actuating device (16) is in the actuating position, the blade holder (12) cannot be moved into the safety position when in the first position and can be moved into the safety position when in the intermediate position.
- Knife as claimed in claim 1 or 2, characterised in that the connecting mechanism (17) comprises at least a first connecting element (26) and a second connecting element (27) and the first connecting element (26) and the second connecting element (27) are connected by means of a pivot link (G3).
- Knife as claimed in one of claims 1 to 3, characterised in that the first connecting element (26) and / or the second connecting element (27) are provided in the form of a control arm.
- Knife as claimed in one of the preceding claims, characterised in that a central axis (m1) of the first connecting element (26) and a central axis (m2) of the second connecting element (27) subtend an obtuse angle (α1) when in the first position and a reflex angle (α3) when in the second position.
- Knife as claimed in one of the preceding claims, characterised in that the blade holder (12) is biased into the safety position by a resetting force of a resetting mechanism (32).
- Knife as claimed in one of claims 4 to 6, characterised in that the first control arm (26) and / or the second control arm (27) are biased into the first position by a resetting force of a resetting mechanism (32).
- Knife as claimed in one of the preceding claims, characterised in that the actuating device (16, 19) is biased into the starting position by a resetting force of a resetting device (37).
- Knife as claimed in one of claims 3 to 8, characterised in that a multi-arm lever (28) having at least a first lever arm (27) and a second lever arm (29) co-operates with the at least one connecting element (27).
- Knife as claimed in one of the preceding claims, characterised in that the blade holder (12) comprises first control means (22) forming a first control surface and the first control surface co-operates with a second control surface which co-operates with the connecting mechanism (17).
Priority Applications (1)
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PL11004822T PL2394801T3 (en) | 2010-06-14 | 2011-06-14 | Knife |
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DE102010023680A DE102010023680A1 (en) | 2010-06-14 | 2010-06-14 | knife |
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EP2394801A1 EP2394801A1 (en) | 2011-12-14 |
EP2394801B1 true EP2394801B1 (en) | 2017-03-01 |
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EP11004822.0A Active EP2394801B1 (en) | 2010-06-14 | 2011-06-14 | Knife |
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US (1) | US8707566B2 (en) |
EP (1) | EP2394801B1 (en) |
DE (1) | DE102010023680A1 (en) |
ES (1) | ES2625471T3 (en) |
PL (1) | PL2394801T3 (en) |
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---|---|---|---|---|
US8595941B2 (en) * | 2010-10-29 | 2013-12-03 | Taylor Brands, Llc | Assisted-opening knife |
DE102011007234B3 (en) * | 2011-04-12 | 2012-09-20 | Martor Kg | Safety Knife |
US8776380B1 (en) * | 2011-04-25 | 2014-07-15 | Elwood Dean Quimby | Utility knife with retractable blade |
CN102825614B (en) * | 2012-03-23 | 2016-04-06 | 上海美瑞实业有限公司 | Safety cutter |
DE102013006599A1 (en) * | 2012-08-30 | 2014-04-03 | Martor Kg | cutter |
DE202013007112U1 (en) * | 2013-08-09 | 2014-11-13 | Martor Kg | knife |
DE102013014684A1 (en) * | 2013-09-05 | 2015-03-05 | Martor Kg | knife |
US10814505B2 (en) * | 2014-05-06 | 2020-10-27 | Martor Kg | Knife with automatic blade retraction |
DE102014208473B4 (en) * | 2014-05-06 | 2019-06-19 | Martor Kg | Knife with automatic blade reset |
DE102015005768A1 (en) * | 2015-05-08 | 2016-11-10 | Martor Kg | knife |
US9808941B2 (en) * | 2016-01-15 | 2017-11-07 | Klever Kutter Llc | Safety utility knife assemblies, and components for use within safety utility knifes |
DE102016008724A1 (en) * | 2016-07-21 | 2018-01-25 | Martor Kg | knife |
US11097434B2 (en) * | 2017-12-21 | 2021-08-24 | Mark Gordon Hooper | Utility knife |
DE102018117203B4 (en) * | 2018-07-17 | 2024-02-01 | Martor Kg | Knife |
US10589436B1 (en) * | 2019-07-09 | 2020-03-17 | Toughbuilt Industries, Inc. | Single-action convertible utility knife and scrapper |
US11084178B2 (en) * | 2019-10-03 | 2021-08-10 | Industro International Co., Ltd. | Box cutter |
DE102019131546A1 (en) * | 2019-11-21 | 2021-05-27 | Martor Kg | knife |
US11254020B2 (en) * | 2019-12-11 | 2022-02-22 | Tsang Wing WONG | Safety cutter |
DE102021121232A1 (en) | 2021-08-16 | 2023-02-16 | Safety Products Holdings Gmbh | Knife |
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Publication number | Priority date | Publication date | Assignee | Title |
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US4713885A (en) * | 1986-12-08 | 1987-12-22 | Ronald Keklak | Safe utility knife |
US5303474A (en) * | 1992-11-30 | 1994-04-19 | Psi, Inc. | Safety utility knife |
DE19723279C1 (en) | 1997-06-04 | 1998-04-23 | Beermann Kg Martor Argentax | Knife for e.g. cutting of packaging cartons |
US6813833B2 (en) * | 2002-01-16 | 2004-11-09 | Nottingham-Spirk Design Associates, Inc. | Utility knife |
DE20210670U1 (en) * | 2002-07-10 | 2002-09-26 | Zeng Min Zheng | Knife with a blade feed that reacts to pressure |
US20040237312A1 (en) * | 2003-05-22 | 2004-12-02 | Hector Hernandez | Knife with trigger actuator for retractable blade |
ES2368529T3 (en) * | 2007-04-16 | 2011-11-18 | Adco Industries, A Subsidiary Of Dallco Marketing, Inc. | CUTTING OF RIGID AND SEMIRIGID MATERIAL. |
DE102008019441A1 (en) | 2008-04-17 | 2009-10-22 | Martor Kg | knife |
-
2010
- 2010-06-14 DE DE102010023680A patent/DE102010023680A1/en not_active Withdrawn
-
2011
- 2011-06-14 US US13/159,599 patent/US8707566B2/en active Active
- 2011-06-14 PL PL11004822T patent/PL2394801T3/en unknown
- 2011-06-14 ES ES11004822.0T patent/ES2625471T3/en active Active
- 2011-06-14 EP EP11004822.0A patent/EP2394801B1/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EP2394801A1 (en) | 2011-12-14 |
ES2625471T3 (en) | 2017-07-19 |
US20110302787A1 (en) | 2011-12-15 |
US8707566B2 (en) | 2014-04-29 |
PL2394801T3 (en) | 2017-08-31 |
DE102010023680A1 (en) | 2011-12-15 |
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