WO2020107598A1 - Couteau pratique à structure de verrouillage - Google Patents

Couteau pratique à structure de verrouillage Download PDF

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Publication number
WO2020107598A1
WO2020107598A1 PCT/CN2018/123372 CN2018123372W WO2020107598A1 WO 2020107598 A1 WO2020107598 A1 WO 2020107598A1 CN 2018123372 W CN2018123372 W CN 2018123372W WO 2020107598 A1 WO2020107598 A1 WO 2020107598A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking
blade
knife
matched
button
Prior art date
Application number
PCT/CN2018/123372
Other languages
English (en)
Chinese (zh)
Inventor
周晓刚
Original Assignee
宁波宏迪尺业有限公司
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 CN201821971807.XU external-priority patent/CN209699154U/zh
Priority claimed from CN201811422566.8A external-priority patent/CN109434879B/zh
Application filed by 宁波宏迪尺业有限公司 filed Critical 宁波宏迪尺业有限公司
Publication of WO2020107598A1 publication Critical patent/WO2020107598A1/fr

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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
    • B26B1/08—Hand knives with adjustable blade; Pocket knives with sliding blade
    • 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

Definitions

  • the invention belongs to the technical field of art cutters, and particularly relates to a utility knife with a locking structure.
  • the utility knife is also commonly known as a carving knife or a wallpaper knife. It is a kind of knife used for fine arts and handicrafts. It is mainly used to cut softer things. It is mostly composed of a plastic knife handle and a blade. It is a pull-out structure. There are also a few metal knife handles, the blades are mostly oblique, and can be broken with a blunt line along the body. A new blade appears, which is convenient for use. Among them, the utility knife is a kind of utility knife.
  • the push button is provided on the top. When the blade is cut downward, the thumb can be used to push the push button and at the same time it is convenient to apply downward pressure. It is also convenient to cut while controlling the blade by pushing the button. It is a very practical art cutter.
  • the technical problem to be solved by the present invention is to provide a utility knife whose blade expansion and contraction can be locked.
  • the present invention provides a utility knife with a locking structure, which includes a casing, a knife holder, a blade, a push button and a knife holder locking device;
  • the side of the casing is provided with a slide slot for pushing the button;
  • the blade is matched and installed in the casing through the knife holder, and the blade is controlled to perform telescopic movement at the blade expansion port by pushing the button;
  • the knife holder locking device is passed Lock the knife holder to achieve telescopic locking of the blade.
  • the casing includes a left casing and a right casing which are spliced and fixed on the left and right; the inner wall of the right casing is provided with a blade holder sliding groove which penetrates the blade expansion port and matches the blade holder; the top surface of the casing is provided with a through blade The sliding slot of the rack and matching the push button; the blade is fixedly clamped on the knife holder, and the knife holder carries the blade to be matched and installed on the sliding slot of the knife holder; the push button matching linkage is connected to the knife holder and slides from the button The slot is exposed outside the shell;
  • the knife holder locking device includes a gear lock push button matched with the button slide groove, and a linkage lock rack matched with the knife holder slide groove, and a limit protrusion is provided on the side of the gear lock push button;
  • the casing between the button slide slot and the knife holder slide slot is provided with an unlocking tooth slot and a locking tooth slot matching the restricting protrusions, the unlocking tooth slot is distributed at the rear end of the button slide slot, and the locking tooth slot is distributed at the unlocking tooth In front of the slot, the height of the locking slot is lower than the height of the unlocking slot;
  • a spring hole is provided in the middle of the bottom end of the gear lock push button, and a compression spring matching it is provided in the spring hole;
  • the front end of the lock frame extends an extension plate that is higher than the knife holder, and the extension plate is provided with a through hole matching the bottom end of the gear lock push button, and the middle of the through hole is provided with a matching spring hole Pressure spring force plate; the top of the
  • the linkage locking bracket is matched and installed on the sliding groove of the knife holder and behind the knife holder, the gear locking push button is snapped into the unlocking tooth slot through the limiting protrusion, and the bottom end of the gear locking push button matches the sleeve It is connected to the through hole and does not penetrate the through hole under the force of the compression spring.
  • the top of the gear lock push button is exposed outside the housing from the button slide and is behind the push button; when the push button is close to the gear lock When pushing the button, the limiting sleeve hole of the knife holder is located directly under the gear lock push button.
  • the rear end of the knife holder is provided with a limiting clamping slot matched with the front end of the interlocking lock bracket.
  • a forceful tension spring is arranged between the linkage lock frame and the knife holder.
  • the utility knife with a locking structure also includes a locking device.
  • the locking device includes a locking lever and an adjusting device. The locking device adjusts the locking lever to lock the blade through the adjusting device.
  • the inner wall of the left casing is provided with inclined protrusions near the blade expansion port;
  • the locking rod is arranged between the inner wall of the left casing and the blade,
  • the adjusting device is arranged at the rear end of the casing; It is controlled to realize its telescopic movement toward the direction of the blade telescoping opening, and the front end of the locking lever reduces the gap with the blade and clamps the locking blade by tilting the projection.
  • the adjusting device includes a locking screw and a locking knob.
  • the locking knob is provided with a threaded hole coaxial with the locking screw and matching with the locking screw; the bottom end of the housing is provided with a matching with the locking knob
  • the knob sleeve hole; the locking knob matching sleeve is inserted into the knob sleeve hole; the front end of the locking screw is matched and fixedly connected with the rear end of the locking rod, and the rear end of the locking screw matches the thread of the threaded hole of the locking knob Connection; the locking rod realizes its telescopic movement toward the blade telescopic port through the adjustment of the threaded connection between the locking knob and the locking screw.
  • the blade is provided with a clamping fixing hole, and the blade holder is provided with a buckle matching with the clamping fixing hole; the blade is fixed to the blade holder through the clamping between the buckle and the clamping fixing hole connection.
  • the inner side wall of the left housing is also provided with a tool change button, one end of the tool change button is matched with the left housing, and the other end of the tool change button extends through the left housing and extends from the outer side of the left housing ,
  • the back structure of the end of the tool change button protruding from the left casing matches the buckle; the blade is replaced by pressing the top button to release the buckle from the fixing hole.
  • the present invention uses a knife holder locking device to lock the knife holder, thereby limiting the expansion and contraction of the blade, thereby achieving the locking of the blade, and ensuring that the blade will not automatically expand and contract and affect the cutting work during use of this product;
  • a tension spring is provided between the linkage lock frame and the blade holder, which can facilitate the blade holder to carry the blade to shrink and reset, and at the same time ensure that the blade will not extend beyond the blade expansion port when not in use, effectively prevent accidental injuries and other situations, and improve safety performance.
  • the set locking device adopts the structure of the locking lever to clamp the blade, so as to achieve the function of blade locking, so that there will be no gap shaking when using, eliminating the need for people to manually apply pressure to limit the blade Operation, effectively avoid the situation that the blade slides to cause cutting errors or accidentally hurt people, and improve the cutting accuracy of this product.
  • FIG. 1 is a schematic structural view of a utility knife with a lock structure of the present invention.
  • FIG. 2 is a schematic structural view of the utility knife with a lock structure of the present invention to the right casing.
  • FIG. 3 is a schematic structural view of the left housing of the present invention.
  • FIG. 4 is a schematic structural view of the utility knife with a locking structure of the present invention to the left casing.
  • FIG. 1 is a schematic structural view of a utility knife with a locking structure of the present invention, which embodies the utility knife with a locking structure is composed of a housing 1, a knife holder 2, a blade 3, a push button 4 and a knife holder locking device 5 , And their connection relationship;
  • Figure 2 is a schematic view of the utility knife with a locking structure of the present invention to the right shell structure, mainly reflecting the structure of the knife holder locking device 5 and the locking device 7;
  • Figure 3 is The structural schematic diagram of the left casing of the present invention highlights the structure of the inclined projection 121, the tool change button 122, the guide projection 123, the unlocking slot 15 and the locking slot 16 on the left casing 12;
  • FIG. 4 is the present invention The schematic diagram of the structure of the utility knife with a lock structure to the left casing, which mainly reflects the structure of the sliding groove 131 and the guide groove 711 of the knife holder.
  • the structure of the utility knife with a locking structure of the present invention is shown in FIG. 1.
  • the utility knife with a locking structure includes a housing 1, a knife holder 2, a blade 3, a push button 4 and a knife holder locking device 5; the housing 1
  • the front end of the blade is provided with a blade expansion port 11 for the blade 3 to expand and contract.
  • the side of the casing 1 is provided with a sliding slot for pushing the button 4 to move; the blade 3 is matched and installed in the casing 1 through the blade holder 2 and the blade 3
  • the push button 4 is used to control the telescopic movement of the blade telescopic opening 11;
  • the knife holder locking device 5 realizes the telescopic locking of the blade 3 by locking the knife holder 2.
  • the invention uses the knife holder locking device to lock the knife holder, thereby limiting the expansion and contraction movement of the blade, thereby achieving the locking of the blade, and ensuring that the blade will not automatically expand and contract during use of the product and affect the cutting work
  • the housing 1 includes a left housing 12 and a right housing 13 that are spliced and fixed on the left and right; the inner wall of the right housing 13 is provided with a through blade telescoping A sliding groove 131 of the blade holder that matches the blade holder 2 and the opening 11; a top surface of the housing 1 is provided with a button sliding groove 14 that penetrates the blade holder sliding groove 131 and matches the push button 4; the blade 3 is fixedly engaged with the knife On the rack 2, the knife holder 2 carries the blade 3 and is matched and installed on the knife holder sliding groove 131; the push button 4 is matched and connected to the knife holder 2 and is exposed out of the housing 1 from the button slide slot 14; It is an integral connection structure with the knife holder 2, push the push button 4 to control the knife holder 2;
  • the knife holder locking device 5 includes a gear lock push button 51 matched with the button slide slot 14, and a linkage lock rack 52 matched with the knife carriage slide groove 131, and the side of the gear lock push button 51
  • the limiting protrusion 511 is provided; the housing 1 between the button slide slot 14 and the knife holder sliding slot 131 is provided with an unlocking tooth slot 15 and a locking tooth slot 16 matching the limiting protrusion 511, and the unlocking tooth slot 15 is distributed in At the rear end of the button slide slot 14, the locking slot 16 is distributed in front of the unlocking slot 15.
  • the height of the locking slot 16 is lower than the height of the unlocking slot 15;
  • an extension plate 521 above the knife holder 2 extends from the front end of the linkage lock frame 52, and the extension plate 521 is provided with a gear
  • a through hole 522 matching the bottom end of the position-locking push button 51 is provided with a compression spring force plate 523 matching the spring hole 512 in the middle of the through hole 522;
  • the limiting sleeve hole 21 matching the bottom end of the lock push button 51;
  • the interlocking locking bracket 52 is matched and installed on the knife holder sliding groove 131 and is located behind the knife holder 2, the gear locking push button 51 is locked in the unlocking tooth slot 15 through the limiting protrusion 511, and the gear locking lock is pushed
  • the bottom end of the button 51 is matched with the through hole 522 and does not pass through the through hole 522 under the force of the compression spring 513.
  • the top end of the gear lock push button 51 is exposed out of the housing 1 from the button slide slot 14 It is located behind the push button 4; when the push button 4 is close to the gear lock push button 51, the limiting sleeve hole 21 of the knife holder 2 is located directly under the gear lock push button 51;
  • the lock push button 51 When the push button 4 is close to the position lock push button 51, the lock push button 51 is pressed to overcome the compression spring 513 and penetrate the through hole 522 to be inserted into the limiting sleeve hole 21, and at the same time, the limit protrusion 511 on the lock push button 51 Disengage the unlocking tooth slot 15, and then push the locking push button 51 to drive the interlocking locking bracket 52 and the knife holder 2 to move forward together, wherein the blade 3 is linked with the knife holder 2; when the locking push button 51 moves to the locking slot 16 At this point, the lock push button 51 is released, and the lock push button 51 rebounds upward under the return spring force of the compression spring 513, and the restricting protrusion 511 on the lock push button 51 snaps into the locking tooth slot 16, Because the height of the locking tooth slot 16 is lower than the height of the unlocking tooth slot 15, the bottom end of the lock push button 51 is partially inserted into the limiting sleeve hole 21 of the knife holder 2, thereby achieving the function of locking the
  • the rear end of the knife holder 2 is provided with a limit clamping slot 22 which is matched with the front end of the interlocking lock holder 52; when the lock push button 51 and the knife When the rack 2 approaches, the interlocking lock frame 52 is inserted into the limit clamping groove 22 of the knife holder 2, so as to effectively prevent the movement misalignment between the interlocking lock frame 52 and the knife holder 2.
  • a tension spring 6 is provided between the linkage lock frame 52 and the knife holder 2, which can facilitate the knife holder to carry the blade to shrink and reset, while ensuring that the blade will not
  • the extension port of the blade is extended when not in use, which effectively prevents accidental injuries and other situations, improves safety performance, and is convenient for carrying the utility knife.
  • a tension spring may also be provided between the knife holder 2 and the housing 1, and the function of the tension spring is the same as the function of the tension spring 6 described above.
  • the utility knife with a locking structure further includes a locking device 7, the locking device 7 includes a locking lever 71 and an adjusting device 72, the locking device 7
  • the locking device 71 is adjusted by the adjusting device 72 to lock the blade 3.
  • the locking device provided by the invention adopts the structure of a locking lever to clamp the blade, so as to achieve the function of locking the blade, so that there will be no gap shaking during use, eliminating the need for people to manually apply pressure to limit the operation of the blade, and effectively avoiding the sliding of the blade. Cutting errors or accidentally injuring people appear to improve the cutting accuracy of this product.
  • the inner wall of the left casing 12 is provided with an inclined protrusion 121 near the blade expansion port 11; the locking lever 71 is provided on the left casing 12 Between the inner wall and the blade 3, an adjusting device 72 is provided at the rear end of the housing 1; the locking lever 71 is controlled by the adjusting device 72 to achieve its telescopic movement toward the blade expansion port 11 and the front end of the locking lever 71
  • the inclined projection 121 reduces the gap with the blade 3 and clamps the locking blade 3.
  • the inclined protrusion 121 is located between the blade 3 and the locking lever 71.
  • the adjusting device 72 includes a locking screw 721 and a locking knob 722.
  • the locking knob 722 is provided with a coaxial and The screw hole 7221 matching the lock screw 721;
  • the bottom end of the housing 1 is provided with a knob sleeve connecting hole 17 matching the lock knob 722;
  • the lock knob 722 is matched sleeved in the knob sleeve connecting hole 17;
  • the lock screw The front end of the 721 is matched and fixedly connected with the rear end of the lock rod 71, and the rear end of the lock screw 721 is matched with the threaded hole 7221 of the lock knob 722; The screw connection between them is adjusted to realize the telescopic movement toward the blade telescopic port 11.
  • the present invention utilizes a threaded structure so that the lock screw 721 drives the lock rod 71 to perform a telescopic movement together under the adjustment of the lock knob 722, and reduces the gap with the blade 3 by clamping the protrusion 121 and clamps the lock blade 3. Restrict the expansion and contraction movement of the blade 3 and the sway of the gap, so that there is no need to use force to restrict the blade 3 in the use of the cutter, making it easier and more convenient for people to use.
  • the lock lever 71 is provided with a guide groove 711 along the direction of its telescopic movement, and the inner wall of the left housing 12 is provided with a guide protrusion 123 matching the guide groove 711; the lock lever 71 is guided by The groove 711 is matched with the guide projection 123 to position and restrict the direction of expansion and contraction of the lock lever 71.
  • the blade 3 is provided with a clamping fixing hole 31, and the blade holder 2 is provided with a buckle 23 matching with the clamping fixing hole 31; the blade 3 passes the card
  • the snap connection between the buckle 23 and the snap fixing hole 31 realizes the fixed connection with the knife holder 2.
  • the buckle 23 can be buckled with the knife holder 2 in the form of a snap connection, so that the buckle 23 has a certain movement resilience relative to the knife holder 2 to facilitate the card between the buckle 23 and the clip fixing hole 31 Buckle and detach.
  • a tool change button 122 is also provided on the inner side wall of the left housing 12, and one end of the tool change button 122 is matched with the left housing 12 to snap-fit , The other end of the tool change button 122 penetrates the left casing 12 and then protrudes from the outer side of the left casing 12.
  • the back structure of the end of the tool change button 122 protruding from the left casing 12 matches the snap 23;
  • the tool-changing button 122 presses the top-opening buckle 23 to disengage the clamping fixing hole 31 to realize the blade 3 following.
  • the tool change button 122 can push the blade 3 and the knife holder 2 apart

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

Abstract

L'invention concerne un couteau pratique muni d'une structure de verrouillage. Le couteau pratique comprend un boîtier (1), une armature de couteau (2), une lame (3), un bouton poussoir (4), et un dispositif de verrouillage d'armature de couteau (5) ; l'extrémité avant du boîtier (1) est munie d'un orifice d'avancement de lame (11) qui peut être destiné à faire avancer et à reculer la lame (3), et une rainure de coulissement qui peut être destinée à déplacer le bouton poussoir (4) est disposée sur la surface latérale du boîtier (1) ; et la lame (3) est montée dans le boîtier (1) au moyen de l'armature de couteau (2) de manière adaptée, et la lame (3) est commandée pour être avancée et reculée dans l'orifice d'avancement de lame (11) au moyen du bouton poussoir (4) ; le dispositif de verrouillage d'armature de couteau (5) permet le verrouillage d'avancement de la lame (3) par verrouillage de l'armature de couteau (2). Le dispositif de verrouillage d'armature de couteau est adapté au verrouillage de l'armature de couteau, le mouvement d'avancement de la lame est limité, et ainsi le verrouillage de la lame est obtenu, et lors de l'utilisation il est garanti que la lame ne puisse pas avancer et reculer automatiquement afin d'avoir une incidence sur le travail de coupe.
PCT/CN2018/123372 2018-11-27 2018-12-25 Couteau pratique à structure de verrouillage WO2020107598A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201821971807.XU CN209699154U (zh) 2018-11-27 2018-11-27 一种带止锁结构的实用刀
CN201811422566.8A CN109434879B (zh) 2018-11-27 2018-11-27 一种带止锁结构的实用刀
CN201821971807.X 2018-11-27
CN201811422566.8 2018-11-27

Publications (1)

Publication Number Publication Date
WO2020107598A1 true WO2020107598A1 (fr) 2020-06-04

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Application Number Title Priority Date Filing Date
PCT/CN2018/123372 WO2020107598A1 (fr) 2018-11-27 2018-12-25 Couteau pratique à structure de verrouillage

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WO (1) WO2020107598A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11267144B2 (en) * 2018-09-06 2022-03-08 Ningbo Hongdi Measuring Tape Industry Co., Ltd. Utility knife with a locknut

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6192589B1 (en) * 1999-06-25 2001-02-27 The Stanley Works Utility knife
US20110283542A1 (en) * 2010-05-21 2011-11-24 Yuewei Wu Retractable Utility Knife
CN202212970U (zh) * 2011-08-12 2012-05-09 上海昆杰五金工具有限公司 一种刀头组件锁定机构
CN202846541U (zh) * 2012-09-29 2013-04-03 王爱国 一种美工刀
CN204749686U (zh) * 2015-06-09 2015-11-11 张家港保税区捷泰国际贸易有限公司 一种雕刻刀
CN106272568A (zh) * 2016-10-17 2017-01-04 顺德工业(江苏)有限公司 一种美工刀

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6192589B1 (en) * 1999-06-25 2001-02-27 The Stanley Works Utility knife
US20110283542A1 (en) * 2010-05-21 2011-11-24 Yuewei Wu Retractable Utility Knife
CN202212970U (zh) * 2011-08-12 2012-05-09 上海昆杰五金工具有限公司 一种刀头组件锁定机构
CN202846541U (zh) * 2012-09-29 2013-04-03 王爱国 一种美工刀
CN204749686U (zh) * 2015-06-09 2015-11-11 张家港保税区捷泰国际贸易有限公司 一种雕刻刀
CN106272568A (zh) * 2016-10-17 2017-01-04 顺德工业(江苏)有限公司 一种美工刀

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11267144B2 (en) * 2018-09-06 2022-03-08 Ningbo Hongdi Measuring Tape Industry Co., Ltd. Utility knife with a locknut

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