Classifications

• • 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
  • B26B1/048—Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position with a locking member being slidable or movable along the handle
• • 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
  • B26B1/10—Handles
• • 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 present disclosure relates to the technical field of knives, and specifically to a multi-functional folding knife.
• Knives are mainly divided into cutter knives for lateral cutting and scraper knives for scraping.
• Cutter knives are tools for arts and handicrafts.
• Most cutter knives have a pull-out structure, including a plastic handle and a blade.
• the cutting edge of the blade is parallel to the axis of the handle or housing, and is mainly used for cutting, for example, paper, cardboard, etc.
• a scraper knife generally has a blade perpendicular or orthogonal to the axis of the handle, and is used for scraping, for example, paint, glue marks, etc. from a flat surface.
• Cutter knives and scraper knives are separate manual tools, and usually cannot be used for each other's purposes. A user usually needs to purchase, store, and carry both the two types of separate tools, which is inconvenient to the user.
• An objective of the present disclosure is to provide a multi-functional folding knife, which has a compact structure and can be quickly positioned at multiple angles through the movement of a blade holder on a first guide rail and a second guide rail to serve as a cutter knife or a scraper knife, thereby improving the working efficiency.
• Another objective of the present disclosure is to provide a multi-functional folding knife, which has a simple structure and does not require the use of an additional complicated accessory, and in which a movement trajectory of a blade holder is defined by a first guide rail and a second guide rail on a surface of an inner housing to allow a blade to be smoothly adjusted to a plurality of positioning positions in a range of 0° to 90°, thereby reducing the production costs.
• Another objective of the present disclosure is to provide a multi-functional folding knife, in which a first guide member and a second guide member on a blade holder are deflected and guided to an appropriate direction to generate a thrust force to push the blade holder in a rotational direction, in order to cause the blade holder to rotate to a preset position, so that a blade can be used longitudinally, transversely, or obliquely for different purposes, thereby expanding the application range of the knife.
• Another objective of the present disclosure is to provide a multi-functional folding knife, in which a safety assembly is used to retain a blade holder in a longitudinal position to prevent the blade holder from accidentally rotating to cause an accidental injury.
• Another objective of the present disclosure is to provide a multi-functional folding knife, in which a self-locking assembly is configured such that an inner housing can be rotated and folded to an outer housing when a blade holder is located in a longitudinal position, and the multi-functional folding knife can be kept in an unfolded state when the blade holder is located in other positions, in order to avoid an accidental injury caused by a blade edge being unable to be smoothly accommodated in a main accommodating chamber.
• Another objective of the present disclosure is to provide a multi-functional folding knife, in which a blade can be quickly replaced by pulling a middle frame.
• a multi-functional folding knife including: a housing, where the housing includes an outer housing and an inner housing, the inner housing is rotatably and foldably mounted in the outer housing, and the inner housing is provided with an accommodating cavity and an end opening, and the end opening is provided at a front end of the inner housing; a blade holder, where the blade holder is configured to hold a blade, and is rotatably mounted in the accommodating cavity; a first guide assembly, where the first guide assembly includes a first guide rail and a drive member, and the drive member is drivably connected to a front side of the blade holder to cause the blade holder to move along the first guide rail, and the drive member is provided with a driving surface; and a second guide assembly, where the second guide assembly includes a fixed surface and a second guide rail provided on the fixed surface, and a rear side of the blade holder is pivotally connected to the second guide rail to cause the blade holder to move along the second guide rail; where
• the multi-functional folding knife further includes a sliding assembly, where the sliding assembly is mounted on the driving surface to drive the drive member to translate and/or rotate; and the blade holder includes a first guide member and a second guide member, the first guide member and the second guide member are respectively arranged on the front side and the rear side of the blade holder in a staggered manner, the first guide member protrudes from the front side of the blade holder and is pivotally connected to a front end of the driving surface and the first guide rail to drive the blade holder to translate and/or rotate along the first guide rail, and the second guide member protrudes from the rear side of the blade holder and is pivotally connected to the second guide rail to drive the blade holder to translate and/or rotate along the second guide rail, so that a longitudinal driving force applied by the sliding assembly to the drive member is converted to a force applied by the drive member to turn the blade holder to the plurality of positioning angles.
• the first guide member and the second guide member respectively arranged on the front side and the rear side of the blade holder are located on an identical straight line parallel to a blade edge of the blade, a starting end of the first guide rail and a starting end of the second guide rail are located on an identical straight line parallel to an axis, the first guide rail extends forward in a direction deviating from the second guide rail, the second guide rail extends outward in a direction away from the first guide rail, and a terminal end of the first guide rail and a terminal end of the second guide rail are located on an identical straight line perpendicular to the axis; when the first guide member is located at the starting end of the first guide rail and the second guide member is located at the starting end of the second guide rail, the blade holder is located in the longitudinal position, and the blade extends out of the end opening to serve as a longitudinal cutter knife; when the first guide member turns and moves along the first guide rail and the second guide member turns and moves along the second guide rail, the blade holder is rotated out of the
• the inner housing includes an upper housing and a lower housing
• the drive member is accommodated in the accommodating cavity between the upper housing and the lower housing and is located between the upper housing and the blade holder
• the upper housing is provided with the first guide rail and a positioning slot
• the first guide rail is formed on an inner surface of the upper housing
• the positioning slot is formed on a surface of the upper housing
• the fixed surface is located on a surface of the lower housing
• the second guide rail is formed on the surface of the lower housing
• the blade holder is movably connected to the upper housing and the lower housing by the first guide member and the second guide member
• a lower end of the sliding assembly passes through the positioning slot and is connected to a rear end of the drive member to drive the drive member to cause the blade holder to translate and/or rotate
• the drive member is configured to be elastically locked in the positioning slot to lock the blade on the blade holder in the longitudinal position, the transverse position, or a transitional position between the longitudinal position and the transverse position.
• the multi-functional folding knife further includes a safety assembly, where the safety assembly includes a safety push button, a safety spring, and an engaging member, the safety push button is longitudinally movably arranged on a side edge of the upper housing to stop the blade, and the safety spring extends longitudinally along an axial direction and presses against the safety push button, so that when the blade holder leaves the longitudinal position, a front end of the safety push button is pressed against the blade holder to avoid the blade, and when the blade holder moves back to the longitudinal position, the safety push button is reset to stop the blade; an engaging groove is provided on an upper side of the safety push button, the engaging member is arranged on the inner surface of the upper housing and is configured to elastically and rotatably press against the drive member, and the engaging member is configured to detachably engage with the engaging groove; when the blade holder is located in the longitudinal position, the engaging member is configured to engage with the engaging groove, and the safety push button avoids the blade to allow the blade to be rotated out of the accommodating cavity; and
• the multi-functional folding knife further includes a self-locking assembly, where the self-locking assembly includes a self-locking push button and a self-locking spring, the self-locking push button is longitudinally movably arranged on the inner housing and is configured to press against the drive member, the self-locking spring is configured to provide an acting force to the self-locking push button for causing the self-locking push button to move toward the drive member, the self-locking push button includes a first self-locking portion protruding from the self-locking push button, the upper housing is provided with a self-locking hole, the first self-locking portion passes through the self-locking hole and extends toward the outer housing, and the outer housing includes a second self-locking portion protruding from an inner surface of the outer housing; when the multi-functional folding knife is in an unfolded state, the second self-locking portion is located on a side of the self-locking hole; when the blade leaves the longitudinal position, the first self-locking portion
• the blade holder includes a first frame, a middle frame, a second frame, and a frame elastic piece
• the middle frame is rotatably connected to the first frame and the second frame
• the frame elastic piece is configured to provide an acting force for pressing the middle frame against the second frame, so that the blade is detachably mounted between the second frame and the middle frame
• the first guide member protrudes radially outward from the first frame
• the second guide member protrudes radially outward from the second frame eccentrically with respect to the first guide member
• the middle frame includes a main body, a shaft portion located on two sides of the main body, and an extension portion located at an upper end of the main body, the extension portion and the main body are respectively located on two sides of a central axis of the shaft portion, the extension portion is exposed to an outside from an upper end of the blade holder and is movably located between the first frame and the second frame, and the extension portion is pulled to overcome an elastic force of the frame elastic piece and cause the main body to rotate away from the second
• orientation and position relationships indicated by the orientation terms such as “center”, “transverse”, “longitudinal”, “length”, “width”, “thickness”, “on”, “below”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the apparatus or element described must have a specific orientation or be constructed and operated in a specific orientation, and therefore are not to be construed as limiting the present disclosure.
• a multi-functional folding knife is provided. As shown in FIG. 1 to FIG. 7 , the multi-functional folding knife includes a housing 10, a blade holder 40, a first guide assembly, and a second guide assembly.
• the housing 10 includes an outer housing 11 and an inner housing 20.
• the outer housing 11 is provided with a main accommodating chamber 12 and an opening 13.
• the opening 13 is provided on a side surface of the outer housing 11 to communicate the main accommodating chamber 12 with outside.
• the inner housing 20 is rotatably and foldably mounted in the main accommodating chamber 12 by a main shaft 14, and can be rotated out of or into the main accommodating chamber 12 through the opening 13.
• the inner housing 20 is provided with an accommodating cavity 23 and an end opening 24.
• the knife when the inner housing 20 is rotated out of the main accommodating chamber 12, the knife is in an unfolded state, a blade edge of the blade 45 extends out of the accommodating cavity 23 through the end opening 24, and the blade 45 can be rotated through the blade holder 40 and positioned at multiple angles for use.
• the knife When the inner housing 20 is rotated into the main accommodating chamber 12, the knife is in a folded state, and the blade 45 and the inner housing 20 are accommodated in the main accommodating chamber 12, to prevent the blade 45 from being exposed to cause accidental injury, and reduce the length of the knife to facilitate carrying.
• the first guide assembly includes a first guide rail 212 and a drive member 30, and the drive member 30 is drivably connected to a front side of the blade holder 40 to cause the blade holder 40 to move along the first guide rail 212.
• the drive member 30 is pivotally connected to the front side of the blade holder 40.
• a translation and/or rotation of the drive member 30 can drive the blade holder 40 to move along the first guide rail 212.
• the second guide assembly includes a fixed surface 222 and a second guide rail 221 provided on the fixed surface 222.
• a rear side of the blade holder 40 is pivotally connected to the second guide rail 221 to cause the blade holder 40 to move along the second guide rail 221.
• the blade holder 40 is connected to both the first guide rail 212 and the second guide rail 221 and can move along the first guide rail 212 and the second guide rail 221, and under the joint guidance of the first guide rail 212 and the second guide rail 221, the blade holder 40 can translate and/or rotate.
• the blade holder 40 is selectively rotated into or out of the accommodating cavity 23, so that an orientation of the blade holder 40 is changed to a plurality of positioning angles between a longitudinal position and a transverse position alternately, enabling the knife to serve as a cutter knife or a scraper knife.
• the knife is convenient to operate, can improve the working efficiency, and has a compact structure.
• the multi-functional folding knife further includes a sliding assembly 50
• the drive member 30 is provided with a driving surface 34
• the sliding assembly 50 is mounted on the driving surface 34 to drive the drive member 30 to translate and/or rotate.
• the drive member 30 can be driven to translate and/or rotate, to further drive the blade holder 40 to translate and/or rotate, so that the blade holder 40 can be rotated out of or into the accommodating cavity 23 and thus turned to multiple angles.
• the blade holder 40 includes a first guide member 411 and a second guide member 421.
• the first guide member 411 and the second guide member 421 are respectively arranged on the front side and the rear side of the blade holder 40 in a staggered manner.
• the first guide member 411 protrudes from the front side of the blade holder 40 and is pivotally connected to a front end of the driving surface 34 and the first guide rail 212 to drive the blade holder 40 to translate and/or rotate along the first guide rail 212.
• the first guide member 411 is pivotally connected to the drive member 30, so that the blade holder 40 is driven by the drive member 30 to move.
• the first guide member 411 is pivotally connected to the first guide rail and is moved in engagement with the first guide rail 212 and the second guide member 421 is moved in engagement with the second guide rail 221 to generate deflection and guidance, so as to generate a thrust force to push the blade holder 40 in a rotational direction, to cause the blade holder 40 to rotate to a preset position, so that the blade 45 can be used longitudinally, transversely, or obliquely for different purposes, thereby expanding the application range of the knife.
• the first guide rail 212 and the second guide rail 221 are respectively of arc-shaped structures with different trajectories
• the first guide rail 212 extends forward in a direction deviating from the second guide rail 221
• the second guide rail 221 extends outward in a direction deviating from the first guide rail 212, so that the blade holder 40 is gradually turned under acting forces in two different directions and thus gradually rotated out of or back into the accommodating cavity 23 through the end opening 24.
• an orientation of the blade 45 on the blade holder 40 is changed to the plurality of positioning angles between the longitudinal position and the transverse position.
• projections of the first guide member 411 and the second guide member 421 on the fixed surface 222 do not overlap, and a distance between the projections of the first guide member 411 and the second guide member 421 on the fixed surface 222 remains unchanged. Therefore, when the extending direction of the first guide rail 212 deviates from the extending direction of the second guide rail 221, the first guide member 411 moves along the first guide rail 212, and the second guide member 421 moves along the second guide rail 221, relative positions of the first guide member 411 and the second guide member 421 on the fixed surface 222 are changed under the guidance of the first guide rail 212 and the second guide rail 221, so that the blade holder 40 can smoothly translate and/or rotate. As such, the knife can be positioned at multiple angles to realize multiple functions. The knife is easy to store and carry.
• the inner housing 20 further includes an upper housing 21 and a lower housing 22.
• the upper housing 21 and the lower housing 22 are mounted and fixed by a fastener 25.
• the drive member 30 is accommodated in the accommodating cavity 23 between the upper housing 21 and the lower housing 22, and is located between the upper housing 21 and the blade holder 40.
• the upper housing 21 is provided with the first guide rail 212 and a positioning slot 211.
• the first guide rail 212 is formed on an inner surface of the upper housing 21 and is pivotally connected to the first guide member 411 on the blade holder 40.
• the positioning slot 211 is formed on a surface of the upper housing 21 and extends along the axial direction.
• the movement trajectory of the blade holder 40 is jointly defined by the first guide rail 212 on the rear side of the upper housing 21 and the second guide rail 221 on the surface of the lower housing 22, so that the blade 45 can be smoothly adjusted to a plurality of positioning positions without requiring the use of an additional complicated accessory, thereby reducing the production costs.
• the engaging portion 511 of the sliding support 51 is configured to move along the movement region 2111 of the positioning slot 211
• the positioning portion 32 of the drive member 30 is configured to detachably engage with a positioning region 2112 of the positioning regions 2112 of the positioning slot 211 to position the blade holder 40 and thus position the blade 45.
• the positioning portion 32 is arranged concentrically with the second connecting hole 31 to achieve a compact structure and simplify the operation.
• An engaging groove 612 is provided on an upper side of the safety push button 61.
• the engaging member 621 is arranged on the inner surface of the upper housing 21 and is configured to elastically and rotatably press against the drive member 30.
• the engaging member 621 is configured to detachably engage with the engaging groove 612.
• the engaging member 621 is configured to engage with the engaging groove 612, and the safety push button 61 avoids the blade 45 to allow the blade 45 to be rotated out of the accommodating cavity 23.
• the engaging member 621 is disengaged from the engaging groove 612 under an action of the drive member 30, so that the front end of the safety push button 61 presses against the blade holder 40.
• the safety push button 61 includes a base 611, a guide groove 613, a bent portion 614, and a stop portion 615.
• the guide groove 613 is provided on the base 611 to accommodate the safety spring 64 and is configured to engage with a guiding member 63, so that the base 611 is accommodated in the accommodating cavity 23 and is longitudinally movable along the guiding member 63.
• the engaging groove 612 and an elongated groove 617 are provided on an upper side of the base 611 and are spaced apart from each other.
• the engaging member 621 rotatably presses against the drive member 30 and is configured to move along the elongated groove 617 or engage with the engaging groove 612.
• the bent portion 614 extends in a bent configuration from the base 611 toward the outer side of the inner housing 20 and is exposed to the outer side of the inner housing 20, so that pushing of the bent portion 614 can cause the safety push button 61 to move along the guiding member 63.
• a slide groove 616 is formed between the base 611 and the bent portion 614 to be movably connected to the upper housing 21.
• the stop portion 615 extends from the base 611 toward the avoidance area 231 to cover at least a part of the avoidance area 231. When the blade 45 is located in the longitudinal position, the stop portion 615 is located below the blade 45 to stop the blade 45 from rotating out of the accommodating cavity 23.
• the safety push button 61 When the engaging member 621 is engaged with the engaging groove 612 or the front end of the safety push button 61 presses against the blade holder 40, the safety push button 61 is moved, so that the stop portion 615 avoids the blade 45 to allow the blade 45 to be rotated out of or into the accommodating cavity 23.
• the first guide member 411 protrudes radially outward from the first frame 41, is pivotally connected to the first connecting hole 33 at the front end of the drive member 30, is connected to the first guide rail 212 on the inner side of the upper housing 21, and is driven by the drive member 30 to move along the first guide rail 212.
• the second guide member 421 protrudes radially outward from the second frame 42 eccentrically with respect to the first guide member 411 and is connected to the second guide rail 221 of the lower housing 22.
• the middle frame 43 includes a main body 431, a shaft portion 433, and an extension portion 432.
• the shaft portion 433 is located on two sides of an upper end of the main body 431 and is rotatably connected to the first frame 41.
• the extension portion 432 extends upward from the upper end of the main body 431, is exposed to outside from an upper end of the blade holder 40, and is movably located between the first frame 41 and the second frame 42.
• a limiting portion 435 and a fixing portion 434 are arranged on and protrude from a side of a lower end of the main body 431 facing the second frame 42.
• the blade 45 includes a limiting notch 452 and a mounting hole 451, and the limiting notch 452 and the mounting hole 451 extend through the blade 45.
• the limiting portion 435 on the main body 431 is configured to engage with the limiting notch 452.
• the fixing portion 434 is configured to pass through the mounting hole 451 to fix the blade 45.
• a second mounting groove 422 and a third mounting groove 423 are provided on a side of the second frame 42 facing the middle frame 43.
• the second mounting groove 422 is configured to accommodate an end of the fixing portion 434.
• the third mounting groove 423 is configured to avoid an end of the limiting portion 435.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Knives (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=90162624

Family Applications (1)

Country Status (2)

Cited By (1)

Citations (4)

Family Cites Families (2)

• 2024
  • 2024-01-22 CN CN202410092612.1A patent/CN117697831B/zh active Active
  • 2024-12-20 EP EP24222211.5A patent/EP4588629A1/fr active Pending

Patent Citations (4)

Also Published As

Similar Documents

Legal Events