WO2014000347A1 - 实用刀 - Google Patents

实用刀 Download PDF

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Publication number
WO2014000347A1
WO2014000347A1 PCT/CN2012/082641 CN2012082641W WO2014000347A1 WO 2014000347 A1 WO2014000347 A1 WO 2014000347A1 CN 2012082641 W CN2012082641 W CN 2012082641W WO 2014000347 A1 WO2014000347 A1 WO 2014000347A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool holder
blade
utility knife
spare
spare blade
Prior art date
Application number
PCT/CN2012/082641
Other languages
English (en)
French (fr)
Inventor
王伟毅
Original Assignee
杭州巨星工具有限公司
杭州巨星科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN 201220314821 external-priority patent/CN202668572U/zh
Priority claimed from CN 201220316389 external-priority patent/CN202607688U/zh
Priority claimed from CN201210224220.3A external-priority patent/CN102756384B/zh
Application filed by 杭州巨星工具有限公司, 杭州巨星科技股份有限公司 filed Critical 杭州巨星工具有限公司
Priority to EP12879972.3A priority Critical patent/EP2868447B1/en
Priority to EP17210975.3A priority patent/EP3332926B1/en
Priority to US14/369,600 priority patent/US10179416B2/en
Priority to CA2877522A priority patent/CA2877522C/en
Priority to PL17210975T priority patent/PL3332926T3/pl
Publication of WO2014000347A1 publication Critical patent/WO2014000347A1/zh

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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
    • B26B1/00—Hand knives with adjustable blade; Pocket knives
    • B26B1/02—Hand knives with adjustable blade; Pocket knives with pivoted blade
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B1/00—Hand knives with adjustable blade; Pocket knives
    • B26B1/02—Hand knives with adjustable blade; Pocket knives with pivoted blade
    • B26B1/04—Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position
    • B26B1/042—Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position by a spring biased locking lever pivoting around an axis parallel to the pivot axis of the blade

Definitions

  • the invention relates to a utility knife.
  • US Patent US6553674 A utility knife that automatically mounts a spare blade stored in a blade to a tool holder is disclosed.
  • the blade can be extended or retracted from the blade by the tool holder. When the blade is blunt, after removing the old blade, the tool holder is retracted, and the spare blade is automatically mounted to the tool holder under the action of the elastic member.
  • the tool holder is provided with a translational slider, and two positioning posts are arranged on the slider for clamping the blade on the tool holder in the gap of the blade, in order to ensure smooth translation and reset of the slider, Two guide posts are arranged on the tool holder, and a spring is arranged between the tool holder and the slider.
  • the structure of the blade to be removed by means of the translation of the slider requires a reset spring to be placed on the slider of a smaller volume.
  • the blind hole and the hole matched with the guiding column have a complicated structure and high manufacturing cost, in particular, in order to ensure reliable positioning of the blade on the tool holder, the two positioning posts need to be long enough to prevent the blade from coming out of the gap, and sufficient The two long positioning posts need to make the slider move a larger distance when the blade is removed, thereby increasing the thickness of the tool holder and increasing the thickness of the tool holder. The two positioning posts long enough may move back and forth in the tool holder.
  • the structure such as the spare blade forms an obstacle, affects the flexibility of the tool holder, and the movable stroke of the button of the slider for control also needs to be increased, thereby causing a decrease in the sensitivity of assembling and dismounting the blade.
  • an openable cover plate is arranged on the side of the blade body, and the cover plate needs to be opened when the blade is loaded, and the blade holder is filled to fill the blade.
  • the thickness of the entire cutter head is ensured for structural strength. Larger, wasted materials, and increased the manufacturing difficulty between the components.
  • US Patent US6553674 The utility model disclosed can basically be regarded as a telescopic utility knife, which has the disadvantages of large volume, inconvenience in operation and carrying, and is used for pushing the button protrusion of the tool holder and the contour of the blade body, and is easily mistakenly caused by the blade. Extending, there are security risks.
  • a utility knife comprising a housing having an interior space; a tool holder for carrying a single blade; a latch for locking a single blade to the tool holder; and for storing a spare blade magazine of more than one spare blade; the tool holder, the latch and the spare blade magazine are disposed in the interior space, the tool holder is configured to move between the first position and the second position, and when the tool holder is in the first In one position, the single blade carried by the device protrudes out of the housing, and when the tool holder is in the second position, the single blade carried therein is received in the housing; the tool holder is provided with a magnetic member, and the magnetic member is set to When the tool holder is empty and in the second position, the spare blade of the nearest tool holder is transferred from the spare blade magazine to the tool holder by magnetic force.
  • the magnetic force of the magnetic member is used to transfer the spare blade from the spare blade magazine to the tool holder.
  • the structure is simpler, and the thickness of the cutter head can be reduced.
  • the magnetic member can also be used on the tool holder. The blade is always subjected to magnetic force and is attached more stably to the tool holder.
  • the magnetic member is a magnetic steel.
  • the magnetic member is configured to be embedded in the tool holder such that the space occupied by the magnetic member in the cutter head can be reduced.
  • the latch has a break that can be mated with a slit on the blade back of a single blade.
  • a locking tongue and the locking tongue is arranged to maintain the cooperation with the gap under the magnetic force of the magnetic member, so that no additional elastic member is needed to keep the locking tongue and the gap, thereby further reducing the occupation of the space inside the cutting head .
  • the bolt is configured to pivotally engage the slit, and the bottom of the bolt is also provided with a chamfered surface so that the latch can be deflected by a small angle to lock The tongue is withdrawn from the gap, so that the space required for the latch to complete the locking and unlocking action is smaller and the tip can be designed to be thinner.
  • the locking tongue is provided with a chamfered surface on one or both sides in the moving direction of the tool holder, so that the tool holder can be prevented from being jammed due to possible scratches between the locking tongue and the spare blade. live.
  • the spare blade magazine is configured to be coupled to the housing by a pin and pivotable from the inner space of the housing to the spare blade for loading.
  • the side of the cutter head is provided with a cover that can be opened and closed, so that the pivotable spare blade magazine occupies less internal space.
  • the spare blade magazine has a hooked flange in the form of a cantilever beam, the hook portion of the flange being configured to snap fit over the blade back of the spare blade when the spare blade is loaded In the gap. This snap fit makes the placement of the spare blade more accurate during the filling process, and the spare blade can be more stably held in the spare blade magazine.
  • the present invention provides, in a second aspect, a utility knife comprising a cutter head having an internal space; a tool holder for carrying a single blade; a latch member for locking a single blade to the tool holder;
  • the spare blade magazine of the above spare blade; the tool holder, the latch member and the spare blade library are disposed in the inner space, the tool holder is arranged to move between the first position and the second position, and when the tool holder is in the first position In position, the single blade carried by the device protrudes out of the housing, and when the tool holder is in the second position, the single blade carried therein is received in the housing; further includes a shank; the cutter head and the shank pass the first pin The shafts are connected and the cutter head is arranged to be pivotable about the first pin to be received in the shank.
  • the present invention designs a cutter head with a spare blade magazine to be incorporated into the form of a folding knife in the shank, which is easier to carry and safer.
  • the tool holder is provided with a magnetic member, and the magnetic member is arranged to transfer the spare blade of the nearest tool holder from the spare blade library to the magnetic tool when the tool holder is in the second position and is empty.
  • the magnetic force of the magnetic member is used to transfer the spare blade from the spare blade magazine to the tool holder.
  • the structure is simpler, and the thickness of the cutter head can be reduced.
  • the magnetic member can also be used on the tool holder. The blade is always subjected to magnetic force and is attached more stably to the tool holder.
  • the magnetic member is a magnetic steel.
  • the magnetic member is configured to be embedded in the tool holder such that the space occupied by the magnetic member in the cutter head can be reduced.
  • the latch has a break that can be mated with a slit on the blade back of a single blade.
  • a locking tongue and the locking tongue is arranged to maintain the cooperation with the gap under the magnetic force of the magnetic member, so that no additional elastic member is needed to keep the locking tongue and the gap, thereby further reducing the occupation of the space inside the cutting head .
  • the bolt is configured to pivotally engage the slit, and the bottom of the bolt is also provided with a chamfered surface so that the latch can be deflected by a small angle to lock The tongue is withdrawn from the gap, so that the space required for the latch to complete the locking and unlocking action is smaller and the tip can be designed to be thinner.
  • the locking tongue is provided with a chamfered surface on one or both sides in the moving direction of the tool holder, so that the tool holder can be prevented from being jammed due to possible scratches between the locking tongue and the spare blade. live.
  • the spare blade magazine is configured to be coupled to the cutter head by a pin and is pivotable out of the inner space of the cutter head for loading the spare blade.
  • the side of the cutter head is provided with a cover that can be opened and closed, so that the pivotable spare blade magazine occupies less internal space.
  • the spare blade magazine has a hooked flange in the form of a cantilever beam, the hook portion of the flange being configured to fit in a snap fit on the back of the blade of the spare blade. This snap fit makes the placement of the spare blade more accurate during the filling process, and the spare blade can be more stably held in the spare blade magazine.
  • a circular arc groove with a radial recess centered on the axis of the first pin shaft is disposed on the shank; and the cutter head is disposed to be movable between the third position and the fourth position.
  • the movable member that cannot be rotated relative to the cutter head is provided with a bump on the movable member, and the movable member is set to: when the knife holder is in the first position, the movable member is in the third position, and the bump is fitted in the arc groove.
  • the cutter head cannot be folded into the handle, only when the cutter moves to the first In the two positions, that is, when the blade on the blade is received in the cutter head, at this time, since the bump can move in the arc groove, the cutter head can be collected into the shank.
  • a biasing spring disposed to abut against the movable member, the biasing spring being compressed when the movable member is moved from the third position to the fourth position by the tool holder And offset the moving parts.
  • a utility knife comprising a housing having an interior space; a tool holder for carrying a single blade; a latch member for locking a single blade to the tool holder; and for storing a spare blade magazine of more than one spare blade; the tool holder, the latch and the spare blade magazine are disposed in the interior space, the tool holder is configured to be movable between the first position and the second position, and when the tool holder is at In the first position, the single blade carried by the lens extends out of the housing, and when the tool holder is in the second position, the single blade carried therein is received in the housing; the spare blade magazine is connected to the housing through the pin, and A spare blade that is configured to be pivotable from the interior space to be loaded around the pin.
  • the spare blade magazine has a hooked flange in the form of a cantilever beam, the hook portion on the flange being configured to fit over the blade back of the spare blade in a snap fit manner In the gap.
  • This snap fit makes the placement of the spare blade more accurate during the filling process, and the spare blade can be more stably held in the spare blade magazine.
  • a utility knife in a fourth aspect of the invention, includes a housing having an interior space; a tool holder for carrying a single blade; a latch member for locking the single blade to the tool holder; a spare blade magazine for storing more than one spare blade; the tool holder, latch and spare blade magazine are disposed in the interior space, the tool holder being disposed in a first position and a second position Intervening, when the tool holder is in the first position, the single blade carried by the tool holder protrudes out of the housing, and when the tool holder is in the second position, the device is carried a single blade is received in the housing; the latch has a clearance on the back of the single blade a bolt, and the bolt is configured to mate with the slit by pivoting. In a relatively flat manner, the locking tongue requires a smaller stroke and more space for the pivoting to cooperate with the slit.
  • a chamfered surface is provided at the bottom of the bolt. In this way, the latch member only needs to be deflected by a small angle, so that the bolt can be withdrawn from the gap, so that the space required for the latch to complete the locking and unlocking action is smaller, and the cutter head can be designed thereby. thin.
  • the locking tongue is provided with a chamfered surface on one or both sides in the moving direction of the tool holder, so that the tool holder can be prevented from being jammed due to possible scratches between the locking tongue and the spare blade. live.
  • Figure 1 is a front elevational view of a utility knife in accordance with a preferred embodiment of the present invention with the blade of the utility knife extending from the cutter head.
  • Figure 2 is a front elevational view of the utility knife shown in Figure 1 with the blade of the utility knife being received in the cutter head.
  • Figure 3 is an exploded view of the utility knife shown in Figure 1.
  • Figure 4 is a perspective view of the tool holder shown in Figure 3.
  • Figure 5 is a perspective view of the button shown in Figure 3.
  • Figure 6 is a perspective view of the second housing shown in Figure 3.
  • Figure 7 is a perspective view of the latch member shown in Figure 3.
  • Figure 8 is a partial cross-sectional view of the cutter head shown in Figure 1.
  • Figure 9 is an A-A cross-sectional view of the tool bit shown in Figure 8, with the unlock button not being depressed.
  • Figure 10 is a front elevational view of the tool bit shown in Figure 1.
  • Figure 11 is a B-B cross-sectional view of the bit shown in Figure 10 with the unlock button depressed.
  • Figure 12 is a perspective view of the blade magazine shown in Figure 3.
  • Figure 13 is a schematic illustration of the blade magazine shown in Figure 3 being pivoted out of the cutter head to load the spare blade.
  • Figure 14 is a perspective view of another embodiment of the blade magazine shown in Figure 3.
  • Figure 15 is a perspective view of the movable member shown in Figure 3.
  • Figure 16 is a perspective view of the tool bit shown in Figure 1.
  • FIG. 17-18 are partial cross-sectional views of the utility knife shown in Fig. 1.
  • FIG. 19-20 are partial cross-sectional views of the utility knife shown in Fig. 2.
  • Figure 21 is a partial cross-sectional view of the utility knife shown in Figures 1 and 2 after it has been received into the shank.
  • Figure 22 is a front elevational view of the tool bit shown in Figure 2.
  • Figure 23 is a C-C cross-sectional view of the tool bit shown in Figure 22.
  • Figure 24 is a front elevational view of a utility knife in accordance with another embodiment of the present invention.
  • Figure 25 is a D-D cross-sectional view of the utility knife shown in Figure 24.
  • FIGs 1, 2 illustrate a folding utility knife with a spare blade magazine in accordance with a preferred embodiment of the present invention.
  • the folding utility knife shown in Fig. 1 is in a state suitable for performing work such as cutting, in which case the cutter head 1 has been exhibited from the shank 2, and the button 4 is pressed and slid to the first position 100. Thereby, the blade 3 is extended from the cutter head 1.
  • the blade 3 can be directly extracted from the cutter head 1 by pressing the unlock button 5, and then the button 4 is pressed and returned to the position shown in FIG.
  • the second position 200 is shown to automatically complete the upper knife process, after which the button 4 is simply pushed down again and pushed forward to the first position 100, and the new blade 3 is extended from the cutter head 1 for use.
  • the cutter head 1 and the shank 2 are connected by a first pin 6 which, like a conventional folding knife, is rotatable about the first pin 6 and is received in the shank 2, as shown in the figure. 21 is shown.
  • FIG. 3 shows an exploded view of the cutter head 1.
  • the outer casing of the cutter head 1 is assembled from a first housing 11 and a second housing 12 to define an interior space 13 in the cutter head 1.
  • the spare blade magazine 14 and the tool holder 16 are disposed in parallel in the internal space 13.
  • the spare blade magazine 14 is located on one side of the inner space 13 adjacent to the first housing 11, and the tool holder 16 is located on a side of the inner space 13 adjacent to the second housing 12.
  • the tool holder 16 is disposed to be movable back and forth between the first position 100 and the second position 200 in the internal space 13, and when the tool holder 16 carrying the blade 3 is moved to the second position 200, on the tool holder 16 More than one of the blade 3 and the spare blade magazine 14 are aligned and in close proximity.
  • the spare blade magazine 14 is provided with a spare blade retaining frame on its side 140 facing the tool holder 16, the backup blade retaining frame including flanges 141, 142 extending from the side 140, spare The blade 15 is held between the flanges 141, 142.
  • the tool holder 16 is provided with a blade retaining frame on its side 160 facing the spare blade magazine 14, the blade retaining frame including flanges 161, 162 extending from the side, the blade 3 being It is held between the flanges 161, 162.
  • the tool holder 16 is also provided with a platform portion 163 that is flush with the blade 3 carried on the tool holder 16 and functions to replace the blade 3 against the backup blade as the blade 3 moves away from the second position 200 with the tool holder 16 15. Keep the spare blade 15 in place.
  • a button 4 is provided on the tool holder 16.
  • the button 4 includes a pressing portion 41, a plug portion 42, and a spring 43.
  • a slot 164 for receiving the plug portion 42 is provided on the tool holder 16.
  • a locking block 44 is provided on a side facing the second housing 12 when the insertion portion 42 is inserted into the slot 164.
  • the second housing 12 is provided with a sliding slot 121 and a plurality of grooves engageable with the locking block 44 along the sliding direction of the button 4 , and at least includes a recess 122 as shown in FIG. 3 , 123.
  • the button 4 is disposed on the side of the tool holder 16 facing the second housing 12 (ie, the side opposite to the side surface 160), and is only disposed on the second housing 12
  • the groove fit does not involve the spare blade magazine 14 and the first housing 11, as in the further embodiment of the present embodiment, which will be described in detail, the spare blade magazine 14 is set to be relatively independent and The condition in which the head 1 is pivoted out to fill the spare blade 15 is provided.
  • the back of the blade 3 and the backup blade 15 of the prior art are provided with two slits 31, 32, and the latch member 7 includes latches 71, 72 which can cooperate with the slits 31, 32. .
  • the notches 31, 32 cooperate with the latch member 7 disposed on the blade holder 16, locking the blade 3 to the blade holder 16, so that the blade 3 can be
  • the tool holder 16 is moved back and forth between the first position 100 and the second position 200, and the blade 3 is stabilized while the first position 100 is being cut or the like.
  • the latching member 7 is arranged to be translated perpendicularly to the blade 3 under external force, such that the locking tongues 71, 72 extend into or out of the notches 31, 32, thereby The locking or unlocking of the blade 3 is achieved.
  • this translational method has the disadvantage that when the latching and unlocking are performed, the stroke of the latching member 7 is long, and the required lateral space is large, so that the cutter head 1 becomes thick.
  • the latching member 7 of this embodiment is pivoted to latch and unlock the blade 3.
  • the latch member 7 of the present embodiment includes a pivot portion 73 that fits within a pivoting groove 165 provided in the side 160 of the tool holder 16, thereby The latch member 7 is pivotable about a pivot slot 165 on a side opposite the side 160.
  • a magnetic member 8 is further provided in the tool holder 16.
  • the magnetic member 8 is a magnetic steel embedded in the fitting hole 81 on the blade holder 16.
  • the latch member 7 In the latched state, the latch member 7 is held in the upright position by the attraction of the magnet steel 8, at which time the bolts 71, 72 extend through the openings 166, 167 into the slots 31, 32, as shown in FIG.
  • the abutment portion 74 on the latch member 7 is aligned with the unlock button 5 and is located above the blade back of the blade 3.
  • the unlocking button 5 is pressed, and the unlocking button 5 pushes the pushing portion 74 of the latching member 7 to pivot the latching member 7 about the pivoting groove 165, so that the locking tongues 71 and 72 are self-opening 31, 32.
  • the blade 3 is in the unlocked state, as shown in Figures 10 and 11.
  • the latch member 7 automatically returns to the upright position by the action of the magnetic steel 8.
  • the body of the latching member 7 may be made of a material such as plastic or light alloy, and a member that can be attracted by the magnetic force of the magnetic member 8 may be additionally disposed on the latching member 7.
  • a thin steel sheet as shown in 75.
  • the action of the magnetic member 8 on the latch member 7 can also be replaced by an elastic member such as a spring or a reed or the like, that is, the latch member 7 can also be used.
  • the elastic member such as a spring or a reed is used to hold or return to the above-mentioned upright position.
  • the magnetic member 8 can be simply embedded in the tool holder 16, which is convenient to install and does not occupy extra space, so that the thickness of the cutter head 1 can be reduced.
  • the locking tongues 71, 72 should preferably be placed at most flush with the blade 3, as shown in Figure 23, otherwise the movement of the tool holder 16 is likely due to The tongues 71, 72 are scratched against the spare blade 15 and are obstructed or even jammed.
  • the latches 71, 72 in the latched state may sometimes pass through the blade 3, so that the latches 71, 72 will scrape against the spare blade 15 when the blade holder 16 is moved, thereby The movement of the tool holder 16 is not smooth, and it may even be completely stuck. To solve this problem, as can be more clearly seen from FIG.
  • the locking tongues 71, 72 of the latch member 7 are chamfered on both sides in the forward and backward movement directions, thereby forming
  • the first chamfered surface 76 is shown in the figures. It can be understood that only one or one side of the locking tongues 71, 72 can be chamfered as needed, or it can be rounded, and the first chamfered surface 76 thus formed will be a circular arc surface. .
  • the bottoms of the bolts 71, 72 are also chamfered to form a second chamfered surface 77 as shown in Fig. 7, so that the latch member 7 is deflected relative to the pivoting groove 165.
  • a smaller angle allows the bolts 71, 72 to be withdrawn from the gaps 31, 32 of the blade 3, reducing the stroke required to unlock the latch member 7, thereby further reducing the thickness of the tip 1.
  • the blade 3 When the unlock button 5 is pressed, the blade 3 is already in the unlocked state. If the blade 3 needs to be replaced at this time, the blade 3 can be directly withdrawn from the cutter head 1, and then the button 4 is pressed to drive the empty tool holder 16 back to the second position 200. Under the gravitational force of the magnetic steel 8, one or more of the spare blades 15 in the spare blade magazine 14 translates integrally toward the side 160 of the tool holder 16, wherein the spare blade 15 closest to the side 160 will now be fully seated on the side. At the same time, the latches 71, 72 will also extend into the gaps 31, 32 of the spare blade 15 to latch them. This means that the spare blade 15 has been transferred to the tool holder 16 as a new blade 3 and the upper knife process has been completed automatically.
  • the backup blade 15 can also be configured to be transferred from the magazine 14 to the tool holder 16 by the biasing force of the resilient member.
  • the cutter head since the cutter head is folded into the shank, it is desirable that the cutter head be as thin as possible, otherwise the overall thickness of the cutter may be too thick, which is disadvantageous to the operation and affects the portability of the cutter.
  • the application of the magnetic member 8 allows the elastic member that cooperates with the latch member 7 and the elastic member for the upper blade process to occupy an extra space, and the elastic member for the upper blade process can be eliminated, thereby further reducing the cutter head.
  • a detachable cover plate is provided on the side of the cutter head 1, and the spare blade magazine 14 in the preferred embodiment is provided to be pivotable out of the cutter head 1 to load the spare blade 15.
  • the spare blade magazine 14 is pivotally coupled between the first housing 11 and the second housing 12 of the tool bit 1 by a second pin 111 and pin holes 112, 145, 126. And a button 143 exposed outside the second casing 12 is further disposed on the edge of the spare blade magazine 14 to facilitate manual operation.
  • the spare blade magazine 14 can be pivoted out about the second pin shaft 111 by manually pushing the dial button 143, and then the spare blade 15 is loaded.
  • the spare blade library 14 as shown in FIG.
  • the present embodiment further provides a stop flange 144 on the spare blade magazine 14, the stop flange 144 extending from the side 140 of the spare blade magazine 14 and beyond the flanges 141, 142, and in the vertical direction Located above the upper end surface 168 of the tool holder 14.
  • the backup blade pocket 14 cannot be pulled out of the cutter head 1 since the stop flange 144 will abut against the upper end surface 168 of the tool holder 14.
  • the spare blade magazine 14 can be pulled out of the cutter head 1.
  • Figure 14 illustrates another preferred embodiment 14' of a spare blade magazine.
  • a portion of the flange 141' of the spare blade magazine 14' is provided in the form of a cantilever beam 145' in which the end of the cantilever beam 145' is provided with a hook portion 146.
  • the hook portion 146 can be snap-fitted into the notch 31 or 32 on the backup blade 15 to snap the spare blade 15 into the spare blade magazine 14'.
  • the hook portion 146 is a portion of the flange 141' of the backup blade holding frame, the hook portion 146 also serves as a guide portion when the backup blade 15 is translated toward the side surface 160 of the tool holder 16 during the upper blade process. The role.
  • the cutter head 1 in the preferred embodiment has been described in detail above. It should be noted that although the preferred embodiment is a folding utility knife, the technical features of the cutter head 1 disclosed herein can be applied individually or collectively to other utility models of folding or non-folding. For example, the utility knife disclosed in U.S. Patent No. 6,553,674, and to the person skilled in the art, does not require any inventive work.
  • Figure 24, 25 shows an embodiment of the non-folding utility knife, the latch member 7 and the magnetic member 8.
  • the preferred embodiment of the invention as shown in Figure 1 can also be arranged such that only when the button 4 and the tool holder 16 are in the second position 200, that is, the blade 3 carried on the tool holder 16 is retracted to the cutter head Within 1 time, the cutter head 1 can be folded into the shank 2.
  • a movable member 9 and a biasing spring 93 are also disposed in the cutter head 1.
  • the movable member 9 is a U-shaped body that is mounted in the receiving groove 125 outside the sleeve 124 of the first pin shaft 6, and the sleeve 124 extends from the inner side surface of the second housing 12 Out.
  • the two end portions 91 of the U-shaped body and the tail side surface 169 of the tool holder 16 are aligned, and the projection 92 extending laterally from the U-shaped body portion passes through the opening provided in the second housing 12. 126, partially exposed outside of the second housing 12.
  • the biasing spring 93 is arranged to bias the movable member 9 such that the head of the U-shaped body of the movable member 9 abuts against the sleeve 124, whereby the movable member 9 can move within the cutter head 1 but cannot be opposed to the cutter The head 1 turns.
  • the lug 92 is in the third position 300; when the tool holder 16 is moved to the second position 200, the tail side 169 pushes the two end portions 91 of the movable member 9 to make the movable member
  • the biasing spring 93 is compressed and switched to the fourth position 400, see Figures 17-20.
  • a first engagement with the projection 92 is provided on the shank 2, along the trajectory of the pivoting movement of the projection 92 in the fourth position 400 with the folding of the cutter head 1, a first engagement with the projection 92 is provided.
  • the axis of the pin 6 is a circular arc groove 21 of a center.
  • a radial recess 22 corresponding to the first position 300 of the projection 92 when the cutter head 1 is in the unfolded state is provided on the circular arc groove 21.
  • the movable member 9 When the tool holder 16 is moved to the second position 200, the movable member 9 is pushed by the tool holder 16 to disengage the projection 92 from the radial recess 22, and is switched to the second position 400 in the circular arc groove 21, at this time, the convex portion 92 can be pivoted in the arcuate slot 21 so that the cutter head 1 can be folded into the shank 2 as shown in FIG.

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  • Forests & Forestry (AREA)
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  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Surgical Instruments (AREA)

Abstract

一种实用刀包括具有内部空间（13）的壳体（11，12）、用于携带单个刀片的刀架（16）、用于将单个刀片锁扣在刀架（16）上的闩锁件（7）以及用于存放一个以上的备用刀片的备用刀片库（14）；刀架（16）、闩锁件（7）和备用刀片库（14）被设置在内部空间（13）中，刀架（16）被设置为可在第一位置和第二位置之间活动，且当刀架（16）处于第一位置时，其携带的刀片伸出壳体之外，当刀架（16）处于第二位置时，其携带的单个刀片收入壳体中；备用刀片库（14）通过销轴（111）与壳体（11，12）相连，并被设置为可绕销轴自内部空间（13）中枢转而出以装填备用刀片。

Description

实用刀
技术领域
本发明涉及一种实用刀。
背景技术
美国专利 US6553674 公开了一种可将储存在刀身内的备用刀片自动装到刀架上的实用刀。刀片可在刀架的带动下自刀身中伸出或收回。当刀片用钝了后，卸去旧刀片后，收回刀架，备用刀片会在弹性件的作用下，自动安装至刀架上。刀架上设有平动的滑块，滑块上设有两个定位柱用于卡在刀片的豁口内实现对刀片在刀架上的安装，为了保证滑块能够顺利的平动以及复位，在刀架上设置有两个导向柱，在刀架与滑块之间安置弹簧，这种通过滑块平动的方式实现拆卸刀片的结构需要在较小体积的滑块上设安置复位弹簧的盲孔、与导向柱配合的孔，结构较为复杂，制造成本高，尤其是为了保证将刀片可靠的装配定位在刀架上，两个定位柱需要足够长以免从刀片的豁口中脱出，而足够长的两个定位柱在拆卸刀片时需要令滑块平动较大的距离，由此导致刀架的厚度增加，进而增加刀柄的厚度，足够长的两个定位柱可能在刀架前后移动时与备用刀片等结构形成障碍、影响刀架灵活性，而且用于控制的滑块的按键的活动行程也需要增加，由此会造成装配、拆卸刀片的灵敏度降低。
另外为装填备用刀片，在刀身侧面设置一可开启的盖板，需要装填刀片时将盖板开启、露出刀架进行刀片的装填，这样结构的刀头，为了保证结构强度，整个刀头的厚度较大，浪费材料，也增大了构成零部件之间的制造难度。
美国专利 US6553674 公开的实用刀基本上可认为是一种伸缩式的实用刀，存在体积大，操作和携带不便等缺点，且用于推动刀架的按钮凸出与刀身轮廓之外，容易被误操作造成刀片伸出，存在安全隐患。
发明内容
本发明在第一方面提供了一种实用刀，包括具有内部空间的壳体；用于携带单个刀片的刀架；用于将单个刀片锁扣在刀架上的闩锁件；以及用于存放一个以上的备用刀片的备用刀片库；刀架、闩锁件和备用刀片库被设置在内部空间中，刀架被设置为在第一位置和第二位置之间活动，且当刀架处于第一位置时，其携带的单个刀片伸出于壳体之外，当刀架处于第二位置时，其携带的单个刀片收入壳体之中；刀架上设置有磁性件，磁性件被设置为，当刀架是空的并且处于第二位置时，利用磁力使最邻近刀架的备用刀片自备用刀片库转移至刀架上。相对弹性件而言，利用磁性件的磁力将备用刀片自备用刀片库转移至刀架上，一方面结构更为简单，可以减小刀头厚度，另一方面磁性件也可使刀架上刀片始终受到磁力的作用，更稳定地贴附在刀架上。
在一实施例中，磁性件为磁钢。
在另一实施例中，磁性件被设置为嵌入在刀架之中，这样可以减小磁性件在刀头中占用的空间。
在另一实施例中，闩锁件具有可与单个刀片的刀背上的豁口相配合的 锁舌，且锁舌被设置为在磁性件的磁力作用下保持与豁口的配合，这样无需再另外设置弹性件来使锁舌保持与豁口的配合，从而进一步减小对刀头内空间的占用。
在另一实施例中，锁舌被设置为通过枢转的方式与豁口配合，且锁舌的底部还设有倒角面，这样闩锁件只需偏转一个较小的角度，即可使锁舌从豁口中退出，从而使闩锁件完成锁扣和解锁动作所需的空间更小，刀头也由此可以设计的更薄。
在另一实施例中，锁舌在刀架的运动方向上的一侧或两侧设有倒角面，这样可以避免由于锁舌和备用刀片之间可能产生的刮碰而使刀架被卡住。
在另一实施例中， 备用刀片库被设置为通过销轴与壳体相连，并可绕销轴自壳体的内部空间中枢转而出以装填的备用刀片。相对于现有技术中在 刀头的侧面设置可开合的盖板的方式，这样可枢转的备用刀片库占用的内部空间更小。在其进一步的实施例中， 备用刀片库具有被设置成悬臂梁形式的带有钩状部的凸缘，当装填备用刀片时，凸缘上的钩状部被设置为以卡扣配合的方式配合在备用刀片的刀背上的豁口中。这样卡扣配合的方式使备用刀片在装填过程的定位更为准确，备用刀片也可被更为稳定地保持在备用刀片库中。
本发明在第二方面提供了一种实用刀，包括具有内部空间的刀头；用于携带单个刀片的刀架；用于将单个刀片锁扣在刀架上的闩锁件；用于存放一个以上的备用刀片的备用刀片库；刀架、闩锁件和备用刀片库被设置在内部空间中，刀架被设置为在第一位置和第二位置之间活动，且当刀架处于第一位置时，其携带的单个刀片伸出于壳体之外，当刀架处于第二位置时，其携带的单个刀片收入壳体之中；还包括刀柄；刀头和刀柄通过第一销轴相连，刀头被设置为可绕第一销轴枢转而被收入刀柄中。不同于现有技术，本发明将带有备用刀片库的刀头设计为可收入刀柄中的折叠刀形式，更易于携带和更加安全。
在一实施例中，刀架上设置有磁性件，磁性件被设置为，当刀架处于第二位置并且是空的时，利用磁力使最邻近刀架的备用刀片自备用刀片库转移至刀架上。相对弹性件而言，利用磁性件的磁力将备用刀片自备用刀片库转移至刀架上，一方面结构更为简单，可以减小刀头厚度，另一方面磁性件也可使刀架上刀片始终受到磁力的作用，更稳定地贴附在刀架上。
在一实施例中，磁性件为磁钢。
在另一实施例中，磁性件被设置为嵌入在刀架之中，这样可以减小磁性件在刀头中占用的空间。
在另一实施例中，闩锁件具有可与单个刀片的刀背上的豁口相配合的 锁舌，且锁舌被设置为在磁性件的磁力作用下保持与豁口的配合，这样无需再另外设置弹性件来使锁舌保持与豁口的配合，从而进一步减小对刀头内空间的占用。
在另一实施例中，锁舌被设置为通过枢转的方式与豁口配合，且锁舌的底部还设有倒角面，这样闩锁件只需偏转一个较小的角度，即可使锁舌从豁口中退出，从而使闩锁件完成锁扣和解锁动作所需的空间更小，刀头也由此可以设计的更薄。
在另一实施例中，锁舌在刀架的运动方向上的一侧或两侧设有倒角面，这样可以避免由于锁舌和备用刀片之间可能产生的刮碰而使刀架被卡住。
在另一实施例中， 备用刀片库被设置为通过销轴与刀头相连，并可绕销轴自刀头的内部空间中枢转而出以装填的备用刀片。相对于现有技术中在 刀头的侧面设置可开合的盖板的方式，这样可枢转的备用刀片库占用的内部空间更小。在其进一步的实施例中， 备用刀片库具有被设置成悬臂梁形式的带有钩状部的凸缘，凸缘上的钩状部被设置为以卡扣配合的方式配合在备用刀片的刀背上的豁口中。这样卡扣配合的方式使备用刀片在装填过程的定位更为准确，备用刀片也可被更为稳定地保持在备用刀片库中。
在另一实施例中，在刀柄上设置有以第一销轴的轴线为圆心的带有径向凹部的圆弧槽；刀头内设置有可在第三位置和第四位置之间活动但不能相对刀头转动的活动件，活动件上设置有凸块，活动件被设置为：当刀架处于第一位置时，活动件处于第三位置，此时凸块配合在圆弧槽的径向凹部中；当刀架由第一位置运动至第二位置时，活动件在刀架的作用下由第三位置移动至第四位置，凸块由径向凹部移动至圆弧槽中，当刀头绕第一销轴枢转被收入刀柄中时，凸块在圆弧槽中运动。这样，当刀架处于第一位置时，亦即刀片伸出在刀头之外时，由于凸块配合在圆弧槽中，刀头不能被折叠收入刀柄中，只有当刀架移动至第二位置时，亦即其上的刀片被收入刀头之中时，此时由于凸块可在圆弧槽中运动，刀头方可被收入刀柄中。在其进一步的实施例中，还包括偏置弹簧，偏置弹簧被设置为抵靠活动件，当活动件在刀架的作用下由第三位置移动至第四位置时，偏置弹簧被压缩并对活动件进行偏置。这样当刀头被展开，并且刀片被从刀头中伸出，亦即刀架处于第一位置时，凸块在偏置弹簧的作用下重新配合径向凹部中。
本发明在第三方面提供了一种实用刀，包括具有内部空间的壳体；用于携带单个刀片的刀架；用于将单个刀片锁扣在刀架上的闩锁件；以及用于存放一个以上的备用刀片的备用刀片库；刀架、闩锁件和备用刀片库被设置在内部空间中，刀架被设置为可在第一位置和第二位置之间活动，且当刀架处于第一位置时，其携带的单个刀片伸出于壳体之外，当刀架处于第二位置时，其携带的单个刀片收入壳体之中；备用刀片库通过销轴与壳体相连，并被设置为可绕销轴自内部空间中枢转而出以装填的备用刀片。在进一步的实施例中，备用刀片库具有被设置成悬臂梁形式的带有钩状部的凸缘，凸缘上的钩状部被设置为以卡扣配合的方式配合在备用刀片的刀背上的豁口中。这样卡扣配合的方式使备用刀片在装填过程的定位更为准确，备用刀片也可被更为稳定地保持在备用刀片库中。
在本发明的第四方面一种实用刀，包括具有内部空间的壳体；用于携带单个刀片的刀架；用于将所述单个刀片锁扣在所述刀架上的闩锁件；以及用于存放一个以上的备用刀片的备用刀片库；所述刀架、闩锁件和备用刀片库被设置在所述内部空间中，所述刀架被设置为在第一位置和第二位置之间活动，当所述刀架处于所述第一位置时，其携带的所述单个刀片伸出于所述壳体之外，当所述刀架处于所述第二位置时，其携带的所述单个刀片收入所述壳体之中；所述闩锁件具有与所述单个刀片的刀背上的豁口相配合的 锁舌，且所述锁舌被设置为通过枢转的方式与所述豁口配合。相对平动的方式而言，锁舌以枢转的方式与豁口进行配合所需的行程更小，更节省空间。
在一实施例中， 在所述锁舌的底部设有倒角面。这样闩锁件只需偏转一个较小的角度，即可使锁舌从豁口中退出，从而使闩锁件完成锁扣和解锁动作所需的空间更小，刀头也由此可以设计的更薄。
在另一实施例中，锁舌在刀架的运动方向上的一侧或两侧设有倒角面，这样可以避免由于锁舌和备用刀片之间可能产生的刮碰而使刀架被卡住。
以下将结合附图对本发明的构思、具体结构及产生的技术效果作进一步说明，以充分地了解本发明的目的、特征和效果。
附图说明
图1是本发明的一个较佳实施例的实用刀的正视图，且该实用刀的刀片自刀头中伸出。
图2是图1中示出的实用刀的正视图，且该实用刀的刀片收入刀头中。
图3是图1中示出的实用刀的分解图。
图4是图3中示出刀架透视图。
图5是图3中示出的按钮的透视图。
图6是图3中示出的第二壳体的透视图。
图7是图3中示出的闩锁件的透视图。
图8是图1中示出的刀头的局部剖视图.
图9是图8中示出的刀头的A-A横截面视图，此时解锁钮未被按下。
图10是图1中示出的刀头的正视图。
图11是图10中示出的刀头的B-B横截面视图，此时解锁钮被按下。
图12是图3中示出的刀片库的透视图。
图13是图3中示出的刀片库被自刀头中枢转而出装填备用刀片的示意图。
图14图3中示出的刀片库的另一实施例的透视图。
图15是图3中示出的活动件的透视图。
图16是图1中示出的刀头的透视图。
图17-18是图1中示出的实用刀的局部剖视图。
图19-20是图2中示出的实用刀的局部剖视图。
图21是图1和2中示出实用刀被收入刀柄后的局部剖视图。
图22是图2中示出的刀头的正视图。
图23是图22中示出的刀头的C-C横截面视图。
图24是本发明的另一实施例的实用刀的正视图。
图25是图24示出的实用刀的D-D横截面视图。
具体实施方式
图1、2示出了根据本发明的一个优选实施例，为一种带有备用刀片库的折叠式实用刀。图1中示出的该折叠式实用刀已处于适于进行切割等工作的状态，此时刀头1已从刀柄2中被展出，且按钮4被按下并滑动至第一位置100，从而使刀片3自刀头1中伸出。此时如果刀片3由于用钝了等原因而需要更换的话，只需按下解锁钮5即可将刀片3从刀头1中直接抽出，然后将按钮4按下并退回到如图2中所示第二位置200自动完成上刀过程，随后只需将按钮4再次按下并向前推至第一位置100，新的刀片3即从刀头1中伸出供使用。
在本优选实施例中，刀头1和刀柄2通过第一销轴6相连，如同常规的折叠刀一样，刀头1可绕第一销轴6旋转而被收入刀柄2中，如图21所示。
图3示出了刀头1的分解图。从图3中可见，刀头1的外壳由第一壳体11和第二壳体12组合而成，从而限定了刀头1中的内部空间13。备用刀片库14和刀架16被平行地设置在内部空间13中。备用刀片库14位于内部空间13中邻近第一壳体11的一侧，而刀架16位于内部空间13中邻近第二壳体12的一侧。刀架16被设置为可在内部空间13中，在第一位置100和第二位置200之间前后移动，并且当携带刀片3的刀架16移动至第二位置200时，刀架16上的刀片3和备用刀片库14中的一个以上的备用刀片15对齐并紧邻。
参见图3和图12，备用刀片库14在其面对刀架16的侧面140上设置有备用刀片保持框架，该备用刀片保持框架包括自侧面140上延伸而出的凸缘141、142，备用刀片15被保持在凸缘141、142之间。
参见图3和图4，刀架16在其面对备用刀片库14的侧面160上设置有刀片保持框架，该刀片保持框架包括自该侧面上延伸而出的凸缘161、162，刀片3被保持在凸缘161、162之间。刀架16上还设置有与被携带在刀架16上的刀片3齐平的平台部163，其作用是当刀片3随刀架16移动离开第二位置200时，接替刀片3抵靠备用刀片15，使备用刀片15保持在原位。
刀架16上设置有按钮4。参见图3、4和5，按钮4包括按压部41、插接部42和弹簧43。刀架16上设置有用于接收插接部42的插槽164。当插接部42被插入插槽164中时面向第二壳体12的一侧上设有锁定块44。另参见图6，第二壳体12上沿按钮4的滑动方向设置有滑槽121和多个可与锁定块44相配合的凹槽，且至少包括如图3中示出的凹槽122、123。当按下按压部41时，弹簧43压缩，锁定块44下降至凹槽122、123以下，此时即可推动按钮4在滑槽121中前后移动。当锁定块44移动至凹槽122的正下方时，松开按压部41，锁定块44在弹簧43作用下上移，卡入凹槽122中，按钮4不能再前后移动，此时刀架16也被定位在第二位置200。当锁定块44移动至凹槽123的正下方时，松开按压部41，锁定块44在弹簧43作用下上移，卡入凹槽123中，按钮4不能再前后移动，此时刀架16被定位在第一位置100。
需要指出的是，在本实施例中，按钮4被设置在刀架16面向第二壳体12的一侧（即与侧面160相反的一侧），且仅与设置第二壳体12上的凹槽配合，而并不涉及备用刀片库14和第一壳体11，这为在本实施例的即将详细描述的进一步实施方式中，将备用刀片库14设置成相对独立的，并可从刀头1中被枢转而出以装填备用刀片15提供了条件。
参见图3和图7，现有技术中的刀片3、备用刀片15的背部均设有两个豁口31、32，而闩锁件7包括可与豁口31、32相配合的锁舌71、72。如图22、23所示，当刀片3处于第二位置200时，豁口31、32和设置在刀架16上的闩锁件7配合，将刀片3锁在刀架16上，使刀片3可随刀架16在第一位置100和第二位置200之间前后移动，且使刀片3在第一位置100进行切割等工作时保持稳定。在美国专利US6553674中，闩锁件7被设置为可在外力作用下，垂直于刀片3平动，使锁舌71、72伸入豁口31、32中或从豁口31、32中退出，由此实现对刀片3的卡锁或解锁。然而这种平动方式的缺点是进行卡锁和解锁时，闩锁件7的行程较长，所需的横向空间较大，使得刀头1变厚。
不同于美国专利US6553674中的平动，本实施例中的闩锁件7采用了枢转的方式来对刀片3进行闩锁和解锁。如图3、4和7所示，本实施例中的闩锁件7包括了枢轴部73，枢轴部73配合在设置在刀架16的侧面160内的枢转槽165内，从而使闩锁件7可绕枢转槽165在与侧面160相反的一侧枢转。在刀架16内还进一步地设置有磁性件8。在本实施例中，磁性件8为嵌装在刀架16上的嵌装孔81中的磁钢。在卡锁状态下，闩锁件7被磁钢8的引力保持在直立位置，此时锁舌71、72穿过开口166、167伸入豁口31、32中，如图23所示。另如图8、9所示，当刀架处于第一位置100时，闩锁件7上的推抵部74与解锁钮5对齐，且均位于刀片3的刀背上方。此时按下解锁钮5，解锁钮5通过推动闩锁件7的推抵部74，进而使闩锁件7绕枢转槽165发生枢转，从而使锁舌71、72自豁口31、32中退出，此时刀片3即处于解锁状态，如图10、11所示。当松开解锁钮5后，在磁钢8的作用下，闩锁件7会自动回复至直立位置。进一步地，为减轻重量或易于加工，闩锁件7的本体可由塑料或轻质合金等材料制成，此时可在闩锁件7上另设置可被磁性件8的磁力所吸引的部件，如75所示的薄钢片。
需要指出的是，如在美国专利US6553674中所公开的，磁性件8在此对闩锁件7所起的作用也可用弹性件来替代，如弹簧或簧片等，即闩锁件7也可借助弹簧或簧片等弹性件来使其保持或回复至上述的直立位置。然而磁性件8可以简单地嵌入在刀架16中，安装方便且不占据额外的空间，从而可以减小刀头1的厚度。
可被理解的是，当刀架16处于第二位置200时，锁舌71、72应优选地被设置为至多与刀片3齐平，如图23所示，否则刀架16的运动很可能由于锁舌71、72刮碰到备用刀片15而受到阻碍甚至被卡住。然而由于加工或安装误差等原因，处在闩锁状态的锁舌71、72有时可能会穿过刀片3，这样刀架16运动时，锁舌71、72就会刮碰到备用刀片15，从而使刀架16的运动不畅，甚至有可能被完全卡住。为解决这个问题，如从图7中可以更清楚地看到的，在本实施例中，对闩锁件7的锁舌71、72在前后运动方向上的两侧进行了倒角，从而形成如图中所示的第一倒角面76。可被理解的是，也可根据需要只对锁舌71、72的其中之一或一个侧面进行倒角，另外也可以是倒圆角，这样形成的第一倒角面76将是圆弧面。
此外，在本实施例中，还对锁舌71、72的底部进行了倒角，从而形成如图7中所示的第二倒角面77，这样闩锁件7绕枢转槽165偏转相对较小的一个角度即可使锁舌71、72从刀片3的豁口31、32中退出，缩小了闩锁件7解锁时所需的行程，从而可进一步减小刀头1的厚度。
当按下解锁钮5时，刀片3已处于解锁状态。此时如需更换刀片3，可直接将刀片3从刀头1中抽出，然后按下按钮4，带动空的刀架16退回至第二位置200。在磁钢8的引力作用下，备用刀片库14中的一个或多个备用刀片15向刀架16的侧面160整体平移，其中原来最接近侧面160的备用刀片15此时将完全贴靠在侧面160上，同时锁舌71、72也将伸入该备用刀片15的豁口31、32中，对其进行闩锁。这意味着该备用刀片15已转移至刀架16上成为新的刀片3，上刀过程已自动完成。
需要指出的是，如在美国专利US6553674中所公开的，备用刀片15也可被设置为是通过弹性件的偏置力作用从刀库14中转移至刀架16上。
对于折叠式实用刀而言，由于刀头被折叠收入刀柄中，因此希望刀头尽可能的薄，否则可能会造成刀的整体过厚，既不利于操作也影响刀的便携性。而在本实施例中，磁性件8的应用使得原本会占据额外空间的与闩锁件7配合的弹性件以及用于上刀过程的弹性件都可被取消，因此进一步地减小了刀头1的厚度。
另外不同于美国专利US6553674中在刀头1的侧面设置可开合的盖板，本优选实施例中的备用刀片库14被设置为可从刀头1中枢转而出，以装填备用刀片15。
参见图3、12、13，备用刀片库14通过第二销轴111和销孔112、145、126被可枢转地连接在刀头1的第一壳体11和第二壳体12之间，并且在备用刀片库14的边缘上还设置了露出在第二壳体12之外的拨钮143，以便于人手操作。当刀头1处于如图1、2所示的展开状态时，即可通过用手拨动拨钮143将备用刀片库14绕第二销轴111枢转而出，然后将备用刀片15装填到备用刀片库14中，如图13所示。进一步地，本实施例在备用刀片库14上进一步设置了止位凸沿144，止位凸沿144自备用刀片库14的侧面140延伸且超过凸缘141、142，并且在竖直方向上位于刀架14的上端面168的上方。这样当刀架14处于第二位置200时，由于止位凸沿144会抵靠在刀架14的上端面168上，此时备用刀片库14不能被拉出刀头1外。当刀架14处于第一位置100，止位凸沿144不会受到刀架14的上端面168的阻挡时，备用刀片库14能被从刀头1中拉出。
图14示出了备用刀片库的另一优选实施方式14′。从图14中可见，在此实施方式中备用刀片库14′的凸缘141′的一部分被设置成悬臂梁145′的形式，悬臂梁145′的端部设置有钩状部146。这样当备用刀片15被如图13所示地装入备用刀片库14′时, 钩状部146可以卡扣配合的方式卡扣在备用刀片15上的豁口31或32中，从而将备用刀片15卡扣在备用刀片库14′中。此外，由于钩状部146是备用刀片保持框架的凸缘141′的一部分，因此钩状部146也起到了在上刀过程中的备用刀片15向刀架16的侧面160平移时的导引部的作用。
以上对本优选实施例中的刀头1进行详细描述。需要指出的是，虽然本优选实施例为折叠式实用刀，然而在此所公开的刀头1所具有的各技术特征仍可单独或共同地应用于其他折叠式或非折叠式的实用刀中，例如美国专利US6553674中所公开的实用刀，且对于本领域技术人员而言，这种应用不需付出创造性劳动。图24、25示出的非折叠式的实用刀的实施例中，就应用了如上所述的闩锁件7和磁性件8.
进一步地，如图1示出的本发明的优选的实施例还可被设置为只有当按钮4和刀架16处于第二位置200，也即刀架16上携带的刀片3被收回至刀头1之内时，刀头1方可被折叠收入刀柄2中。
在此情况下，参见图3、6、15和16，刀头1内还设置有活动件9和偏置弹簧93。在本实施例中，活动件9是被安装在第一销轴6的套管124之外的位于容纳槽125中的U型体，套管124自第二壳体12的内侧面上延伸而出。安装完毕后，U型体的两个端部91和刀架16的尾部侧面169是对齐的，从U型体头部横向延伸出的凸块92穿过设置在第二壳体12上的开口126，部分地暴露在第二壳体12之外。偏置弹簧93被设置为对活动件9进行偏置，使活动件9的U型体的头部抵靠在套管124上，由此活动件9可在刀头1内移动但不能相对刀头1转动。当刀架16处于第一位置100时，凸块92处于第三位置300；当刀架16移动至第二位置200时，其尾部侧面169推动活动件9的两个端部91，使活动件压缩偏置弹簧93并切换至第四位置400，见图17-20。
如图17-20所示，在刀柄2上，沿处于第四位置400的凸块92随刀头1的折叠展开而枢转运动的轨迹，设置有可与凸块92配合的以第一销轴6的轴线为圆心的圆弧槽21。另外在圆弧槽21上设置有与刀头1处于展开状态时的凸块92的第一位置300相对应的径向凹部22。这样当刀头1处于展开状态，且刀架16处于第一位置100时，凸块92配合在径向凹部22中，此时刀头1不能被折叠收回至刀柄中。而当刀架16被移动至第二位置200时，活动件9被刀架16推动使凸块92脱离径向凹部22，并切换至圆弧槽21中的第二位置400，此时凸块92可在圆弧槽21中枢转，从而刀头1可被折叠收入刀柄2中，如图21所示。
以上详细描述了本发明的较佳具体实施例。应当理解，本领域的普通技术人员无需创造性劳动就可以根据本发明的构思作出诸多修改和变化。因此，凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。

Claims (24)

  1. 一种实用刀，包括
    具有内部空间的壳体；
    用于携带单个刀片的刀架；
    用于将所述单个刀片锁扣在所述刀架上的闩锁件；以及
    用于存放一个以上的备用刀片的备用刀片库；
    所述刀架、闩锁件和备用刀片库被设置在所述内部空间中，所述刀架被设置为在第一位置和第二位置之间活动，当所述刀架处于所述第一位置时，其携带的所述单个刀片伸出于所述壳体之外，当所述刀架处于所述第二位置时，其携带的所述单个刀片收入所述壳体之中；
    其特征在于，所述刀架上设置有磁性件，所述磁性件被设置为，当所述刀架是空的并且处于所述第二位置时，利用磁力使最邻近所述刀架的所述备用刀片自所述备用刀片库转移至所述刀架上。
  2. 如权利要求1所述的实用刀，其中，所述磁性件为磁钢。
  3. 如权利要求1或2所述的实用刀，其中，所述磁性件被设置为嵌入在所述刀架之中。
  4. 如权利要求1所述的实用刀，其中，所述闩锁件具有与所述单个刀片的刀背上的豁口相配合的锁舌，且所述锁舌被设置为在所述磁性件的磁力作用下保持与所述豁口的配合。
  5. 如权利要求4所述的实用刀，其中，所述锁舌被设置为通过枢转的方式与所述豁口配合，且所述锁舌的底部设有倒角面。
  6. 如权利要求4所述的实用刀，其中，所述锁舌在所述刀架的运动方向上的一侧或两侧设有倒角面。
  7. 如权利要求1所述的实用刀，其中，所述备用刀片库通过销轴与所述壳体相连，并被设置为可绕所述销轴自所述壳体的所述内部空间中枢转而出以装填所述的备用刀片。
  8. 如权利要求7所述的实用刀，其中，所述备用刀片库具有被设置成悬臂梁形式的带有钩状部的凸缘，所述凸缘上的所述钩状部被设置为以卡扣配合的方式配合在所述备用刀片的刀背上的豁口中。
  9. 一种实用刀，包括
    具有内部空间的刀头；
    用于携带单个刀片的刀架；
    用于将所述单个刀片锁扣在所述刀架上的闩锁件；
    用于存放一个以上的备用刀片的备用刀片库；
    所述刀架、闩锁件和备用刀片库被设置在所述内部空间中，所述刀架被设置为在第一位置和第二位置之间活动，且当所述刀架处于所述第一位置时，其携带的所述单个刀片伸出于所述壳体之外，当所述刀架处于所述第二位置时，其携带的所述单个刀片收入所述壳体之中；
    还包括刀柄；
    其特征在于，所述刀头和刀柄通过第一销轴相连，所述刀头被设置为可绕第一销轴枢转而被收入所述刀柄中。
  10. 如权利要求9所述的实用刀，其中，所述刀架上设置有磁性件，所述磁性件被设置为，当所述刀架处于所述第二位置并且是空的时，利用磁力使最邻近所述刀架的所述备用刀片自所述备用刀片库转移至所述刀架上。
  11. 如权利要求10所述的实用刀，其中，所述磁性件为磁钢。
  12. 如权利要求10或11所述的实用刀，其中，其中，所述磁性件被设置为嵌入在所述刀架之中。
  13. 如权利要求9或10所述的实用刀，其中，所述闩锁件具有可与所述单个刀片的刀背上的豁口相配合的锁舌，且所述锁舌被设置为在所述磁性件的磁力作用下保持与所述豁口的配合。
  14. 如权利要求13所述的实用刀，其中，所述锁舌在所述刀架的运动方向上的一侧或两侧设有倒角面。
  15. 如权利要求13所述的实用刀，其中，所述锁舌被设置为通过枢转的方式与所述豁口配合，且在所述锁舌的底部设有倒角面。
  16. 如权利要求9或10所述的实用刀，其中，所述备用刀片库被设置为通过第二销轴与所述刀头相连，并可绕所述第二销轴自所述刀头的所述内部空间中枢转而出以装填所述的备用刀片。
  17. 如权利要求14所述的实用刀，其中，所述备用刀片库具有被设置成悬臂梁形式的带有钩状部的凸缘，所述凸缘上所述钩状部被设置为以卡扣配合的方式配合在所述备用刀片的刀背上的豁口中。
  18. 如权利要求9或10所述的实用刀，其中，在所述刀柄上设置有以所述第一销轴的轴线为圆心的带有径向凹部的圆弧槽；所述刀头内设置有可在第三位置和第四位置之间活动但不能相对所述刀头转动的活动件，所述活动件上设置有凸块，所述活动件被设置为：
    当所述刀架处于所述第一位置时，所述活动件处于所述第三位置，此时所述凸块配合在所述圆弧槽的所述径向凹部中；
    当所述刀架由所述第一位置运动至所述第二位置时，所述活动件在所述刀架的作用下由所述第三位置移动至所述第四位置，所述凸块由所述径向凹部移动至所述圆弧槽中，当所述刀头绕所述第一销轴枢转被收入所述刀柄中时，所述凸块在所述圆弧槽中运动。
  19. 如权利要求18所述的实用刀，其中，还包括偏置弹簧，所述偏置弹簧被设置为抵靠所述活动件，当所述活动件在所述刀架的作用下由所述第三位置移动至所述第四位置时，所述偏置弹簧被压缩并对所述活动件进行偏置。
  20. 一种实用刀，包括
    具有内部空间的壳体；
    用于携带单个刀片的刀架；
    用于将所述单个刀片锁扣在所述刀架上的闩锁件；以及
    用于存放一个以上的备用刀片的备用刀片库；
    所述刀架、闩锁件和备用刀片库被设置在所述内部空间中，所述刀架被设置为可在第一位置和第二位置之间活动，且当所述刀架处于所述第一位置时，其携带的所述单个刀片伸出于所述壳体之外，当所述刀架处于所述第二位置时，其携带的所述单个刀片收入所述壳体之中；
    所述备用刀片库通过销轴与所述壳体相连，并被设置为可绕所述销轴自所述内部空间中枢转而出以装填所述的备用刀片。
  21. 如权利要求20所述的实用刀，其中，所述备用刀片库具有被设置成悬臂梁形式的带有钩状部的凸缘，所述凸缘上所述钩状部被设置为以卡扣配合的方式配合在所述备用刀片的刀背上的豁口中。
  22. 一种实用刀，包括
    具有内部空间的壳体；
    用于携带单个刀片的刀架；
    用于将所述单个刀片锁扣在所述刀架上的闩锁件；以及
    用于存放一个以上的备用刀片的备用刀片库；
    所述刀架、闩锁件和备用刀片库被设置在所述内部空间中，所述刀架被设置为在第一位置和第二位置之间活动，当所述刀架处于所述第一位置时，其携带的所述单个刀片伸出于所述壳体之外，当所述刀架处于所述第二位置时，其携带的所述单个刀片收入所述壳体之中；
    其特征在于，所述闩锁件具有与所述单个刀片的刀背上的豁口相配合的锁舌，且所述锁舌被设置为通过枢转的方式与所述豁口配合。
  23. 如权利要求22所述的实用刀，其中，在所述锁舌的底部设有倒角面。
  24. 如权利要求22所述的实用刀，其中，所述锁舌在所述刀架的运动方向上的一侧或两侧设有倒角面。
PCT/CN2012/082641 2012-06-28 2012-10-09 实用刀 WO2014000347A1 (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12879972.3A EP2868447B1 (en) 2012-06-28 2012-10-09 Utility knife
EP17210975.3A EP3332926B1 (en) 2012-06-28 2012-10-09 Utility knife
US14/369,600 US10179416B2 (en) 2012-06-28 2012-10-09 Utility knife
CA2877522A CA2877522C (en) 2012-06-28 2012-10-09 Utility knife
PL17210975T PL3332926T3 (pl) 2012-06-28 2012-10-09 Nóż użytkowy

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CN201220316389.7 2012-06-28
CN 201220314821 CN202668572U (zh) 2012-06-28 2012-06-28 自动上刀结构及可自动装入刀片的手动刀
CN201220314821.9 2012-06-28
CN201210224220.3 2012-06-28
CN 201220316389 CN202607688U (zh) 2012-06-28 2012-06-28 带刀库的实用刀
CN201210224220.3A CN102756384B (zh) 2012-06-28 2012-06-28 带刀库的实用刀

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CA2877522C (en) 2019-12-24
PL3332926T3 (pl) 2020-03-31
US20160039100A1 (en) 2016-02-11
EP3332926B1 (en) 2019-09-04
EP2868447B1 (en) 2019-03-13
EP2868447A4 (en) 2016-07-27
EP3332926A1 (en) 2018-06-13
US10179416B2 (en) 2019-01-15
CA2877522A1 (en) 2014-01-03

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