WO2019153812A1 - 一种u型弹簧结构折刀 - Google Patents

一种u型弹簧结构折刀 Download PDF

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Publication number
WO2019153812A1
WO2019153812A1 PCT/CN2018/114697 CN2018114697W WO2019153812A1 WO 2019153812 A1 WO2019153812 A1 WO 2019153812A1 CN 2018114697 W CN2018114697 W CN 2018114697W WO 2019153812 A1 WO2019153812 A1 WO 2019153812A1
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WO
WIPO (PCT)
Prior art keywords
blade
shank
shaped
folding knife
spring
Prior art date
Application number
PCT/CN2018/114697
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English (en)
French (fr)
Inventor
安永俊
Original Assignee
安永俊
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
Application filed by 安永俊 filed Critical 安永俊
Publication of WO2019153812A1 publication Critical patent/WO2019153812A1/zh

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    • 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

Definitions

  • the utility model relates to the field of hardware tools, in particular to a U-shaped spring structure folding knife.
  • Cipheral Patent Application No.: 201120546192.8 discloses a folding knife comprising: a cutting edge, a locking switch mounting hole is arranged on the upper part; a handle is arranged in the lower part; a locking switch is arranged in the mounting hole of the locking switch, and Having a locking portion on a first side of the blade, the locking portion has a locking position that is locked in the slot when the blade is engaged with the shank, and an unlocking position that is detached from the slot when the blade is separated from the shank .
  • Chinese Patent Application No.: 201120088472.9 discloses a folding knife relating to an improvement in the structure of a folding knife.
  • the utility model comprises a cutter body and a scabbard, wherein the cutter body and the scabbard form an articulated structure through the rotating shaft; a plastic elastic piece is arranged above the arc corner position of the inner side of the cutter body, the plastic elastic piece is fixedly connected with the scabbard, and the plastic elastic piece has a U The groove formed by the U-shaped groove to the lower portion is on the top of the cutter body.
  • Chinese Patent Application No.: 200920296242.4 discloses a folding knife.
  • the utility model comprises a knife body and a handle body, wherein the handle body is provided with a spring strip, the back of the spring strip is provided with a convex position, a corresponding groove is arranged at a corresponding position of the handle body, and the convex position protrudes into the groove, in the handle
  • the tail of the body is provided with a slot, the tail end of the spring strip is snapped into the slot, and the front end of the spring bar is pressed against the root of the blade body.
  • the above invention has a complicated structure, and when the blade is closed, the blade easily hits the spring and the spring seat, so that the blade tip exposes the shank.
  • the object of the present invention is to overcome the above-mentioned drawbacks of the prior art and to provide a U-shaped spring structure folding knife.
  • a U-shaped spring structure folding knife comprising a shank and a cutting edge
  • the movable handle is opened in the shank
  • the cutting edge is hinged in one end of the shank
  • the U-shaped card slot is arranged at the hinge end
  • the top of the shank is provided with a locking portion corresponding to the hinged movement of the U-shaped card slot, and a card slot is formed below the locking portion
  • a U-shaped spring is stuck in the card slot
  • U The spring is arranged symmetrically to the left and right and has a blade groove at its central portion.
  • the movable slot and the blade length correspond to each other.
  • the utility model has the advantages that the structure is simple, the blade does not hit the spring and the spring seat when being closed, thereby reducing space and weight, enhancing safety, and the tool holder is not constrained by the shape of the conventional spring.
  • FIG. 1 is a cross-sectional internal structural view of a U-shaped spring structure folding knife of the present invention
  • FIG. 2 is a view showing the internal structure of the U-shaped spring structure folding knife in a closed state
  • FIG. 3 is a perspective view of a U-shaped spring of a U-shaped spring structure folding knife according to the present invention.
  • a U-shaped spring structure folding knife comprises a handle 1 and a blade 2, and a movable slot 3 is opened in the handle 1, and the blade 2 is hinged to one end of the handle 1.
  • the U-shaped card slot 21 is disposed at the hinge end of the blade 2 and the shank 1 .
  • the top of the shank 1 is provided with a locking portion 11 corresponding to the U-shaped slot 21 of the shank 1 , and a card slot is defined under the locking portion 11 .
  • a U-shaped spring 4 is snap-fitted in the card slot, and the U-shaped spring 4 is symmetrically disposed in the left-right direction and has a blade groove 41 formed in the middle portion thereof.
  • the movable groove 3 and the length of the blade 2 correspond to each other.
  • the utility model has the advantages of simple structure, since the spring seat is not provided by itself, so that the blade 2 does not hit the spring and the spring seat when being closed, thereby reducing space and weight, enhancing safety, and the tool holder 1 is not external to the traditional spring. Type constraint.

Abstract

一种U型弹簧结构折刀，包括刀柄（1）及刀刃（2），刀柄内开设有活动槽（3），刀刃铰接于刀柄一端内，刀刃与刀柄的铰接端设有U型卡槽（21），刀柄顶部对应其U型卡槽处铰接活动设有锁止部（11），锁止部下方开设有一卡槽，卡槽内卡接设有一U形弹簧（4），U形弹簧呈左右对称设置并在其中部开设有刀刃槽（41）。

Description

一种U型弹簧结构折刀 技术领域
本实用新型涉及五金刀具领域，尤其涉及一种U型弹簧结构折刀。
背景技术
中国专利申请号：201120546192.8，公开了一种折叠刀，包括：刀刃，上部设置有锁止开关安装孔；刀柄，下部设置有卡槽；锁止开关，设置于锁止开关安装孔内，并具有位于刀刃的第一侧面的锁止部，锁止部具有在刀刃与刀柄扣合时卡装在卡槽内的锁止位置以及在刀刃与刀柄分离时从卡槽内脱离的解锁位置。
中国专利申请号：201120088472.9，公开了一种折叠刀,涉及折叠刀结构的改进。包括刀体和刀鞘,刀体和刀鞘一端部通过转轴形成铰接结构；位于刀体内侧圆弧转角位置的上方设置有一个塑料弹片,塑料弹片与刀鞘固定连接,塑料弹片上有一个U形槽,U形槽向下部位形成的凸起顶在刀体的上面。
中国专利申请号：200920296242.4，公开了一种折叠刀。它包括有刀体和柄体,所述柄体内设置有弹簧条,该弹簧条的背部设置有一凸位,在柄体的的相应位置设置有一凹槽,凸位伸入凹槽中,在柄体的尾部设置有一槽位,弹簧条的尾端卡入槽位中,弹簧条的前端压住刀体的根部。
上述发明创造结构复杂，刀刃合拢时，刀刃容易碰到弹簧及弹簧座.使刀尖露出刀柄。
实用新型内容
本实用新型的目的在于，克服现有技术的上述缺陷，提供一种U型弹簧结构折刀。
为实现上述目的，本实用新型提供的技术方案如下：一种U型弹簧结构折刀，包括刀柄及刀刃，刀柄内开设有活动槽，刀刃铰接于刀柄一端内，刀刃与刀柄的铰接端设有U型卡槽，刀柄顶部对应其U型卡槽处铰接活动设有锁止部，所述锁止部下方开设有一卡槽，卡槽内卡接设有一U形弹簧，U形弹簧呈左右对称设置并在其中部开设有刀刃槽。
进一步的，活动槽与刀刃长度相互对应。
本实用新型的有益之处是：结构简单，刀刃在合拢时不会碰到弹簧及弹簧座，因而减少了空间及重量，增强了安全性，刀柄不受传统弹簧的外型约束。
附图说明
图1是本实用新型一种U型弹簧结构折刀的展开状态剖内部结构图；
图2是本实用新型一种U型弹簧结构折刀的合拢状态内部结构图；
图3是本实用新型一种U型弹簧结构折刀的U形弹簧立体图。
具体实施方式
下面结合附图及较佳实施例就本实用新型的技术方案作进一步的说明。
如图1-图3所示，本实用新型所述的一种U型弹簧结构折刀，包括刀柄1及刀刃2，刀柄1内开设有活动槽3，刀刃2铰接于刀柄1一端内，刀刃2与刀柄1的铰接端设有U型卡槽21，刀柄1顶部对应其U型卡槽21处铰接活动设有锁止部11，锁止部11下方开设有一卡槽(图中未示出)，卡槽内卡接设有一U形弹簧4，U形弹簧4呈左右对称设置并在其中部开设有刀刃槽41。
进一步的，活动槽3与刀刃2长度相互对应。
本实用新型结构简单，因本身没有设置有弹簧座，使刀刃2在合拢时不会碰到弹簧及弹簧座，因而减少了空间及重量，增强了安全性，刀柄1不受传统弹簧的外型约束。
以上所述的仅是本实用新型的原理和较佳实施例。应当指出，对本领域的普通技术人员来说，在不脱离本实用新型原理的前提下，还能做出若干的变型和改进，也应视为属于本实用新型的保护范围。

Claims (2)

  1. 一种U型弹簧结构折刀，包括刀柄及刀刃，刀柄内开设有活动槽，刀刃铰接于刀柄一端内，刀刃与刀柄的铰接端设有U型卡槽，刀柄顶部对应其U型卡槽处铰接活动设有锁止部，其特征在于：所述锁止部下方开设有一卡槽，卡槽内卡接设有一U形弹簧，U形弹簧呈左右对称设置并在其中部开设有刀刃槽。
  2. 根据权利要求1所述的一种U型弹簧结构折刀，其特征在于：所述活动槽与刀刃长度相互对应。
PCT/CN2018/114697 2018-02-07 2018-11-09 一种u型弹簧结构折刀 WO2019153812A1 (zh)

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CN201820210365.0 2018-02-07
CN201820210365.0U CN207841395U (zh) 2018-02-07 2018-02-07 一种u型弹簧结构折刀

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207841395U (zh) * 2018-02-07 2018-09-11 安永俊 一种u型弹簧结构折刀

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201132317Y (zh) * 2007-09-15 2008-10-15 杭州巨星科技有限公司 便于对刀架定位操作的手动刀
CN201471451U (zh) * 2009-08-26 2010-05-19 陈传金 一种可更换刀片的裁纸刀
US20150266188A1 (en) * 2013-08-05 2015-09-24 Andrew Demko Spring assist folding knife
CN204976671U (zh) * 2015-07-31 2016-01-20 梁刚 背锁折刀的保险装置
CN207841395U (zh) * 2018-02-07 2018-09-11 安永俊 一种u型弹簧结构折刀

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201132317Y (zh) * 2007-09-15 2008-10-15 杭州巨星科技有限公司 便于对刀架定位操作的手动刀
CN201471451U (zh) * 2009-08-26 2010-05-19 陈传金 一种可更换刀片的裁纸刀
US20150266188A1 (en) * 2013-08-05 2015-09-24 Andrew Demko Spring assist folding knife
CN204976671U (zh) * 2015-07-31 2016-01-20 梁刚 背锁折刀的保险装置
CN207841395U (zh) * 2018-02-07 2018-09-11 安永俊 一种u型弹簧结构折刀

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