WO2021057682A1 - 一种安全剪刀 - Google Patents

一种安全剪刀 Download PDF

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Publication number
WO2021057682A1
WO2021057682A1 PCT/CN2020/116620 CN2020116620W WO2021057682A1 WO 2021057682 A1 WO2021057682 A1 WO 2021057682A1 CN 2020116620 W CN2020116620 W CN 2020116620W WO 2021057682 A1 WO2021057682 A1 WO 2021057682A1
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Prior art keywords
cutting
blade
scissors
belly
angle
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PCT/CN2020/116620
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English (en)
French (fr)
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黄健亮
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黄健亮
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Application filed by 黄健亮 filed Critical 黄健亮
Publication of WO2021057682A1 publication Critical patent/WO2021057682A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/06—Hand shears; Scissors characterised by the shape of the blades

Definitions

  • the invention belongs to the technical field of scissors, and particularly relates to a safety scissors.
  • Scissors are a common cutting tool in life, and the requirements for cutting different items are also different. Therefore, according to the habitual use of scissors, the types of gardening scissors, kitchen scissors, stationery scissors, etc. are divided into different types. The requirements are different. For example, garden shears are specially used for trimming plants such as flowers and trees. They have high requirements for the strength and sharpness of the scissors, and try to save time and effort. Kitchen shears are generally used for cutting vegetables, fish bones, chicken bones, etc., and the strength of the scissors is relatively high.
  • the cutting edge positions are the same.
  • the cutting blades are located on the upper and lower edges of the cutting blade.
  • the cutting belly and the blade surface are located on both sides of the cutting blade.
  • the angle e between the blade surface and the reference plane perpendicular to the rotation center line of the blade is greater than 90°, and the smaller the blade angle, the sharper the blade, and the more labor-saving the use of the scissors.
  • the existing stationery scissors usually design the included angle e to be as large as possible, which is equivalent to increasing the blade angle of the clip, reducing its sharpness and reducing the possibility of being cut.
  • the fingers are easy to touch the cutting blade frontally, such as As shown in Figure 3, since the blade angle of the cutting blade is relatively small and sharp, the pressure of the fingers on the cutting blade is greater, and the risk of being cut is still greater, especially the stationery scissors have a greater safety hazard.
  • the object of the present invention is to provide a safety scissors that is not easy to cut.
  • a safety scissors including two pivotally connected cutting pieces, the opposite side of the two cutting pieces is the cutting belly, and the cutting edge of the cutting piece is located on the corresponding cutting piece.
  • the angle a between the blade surface of the clip and the reference plane perpendicular to the rotation center line of the clip is less than 90 degrees.
  • the angle a between the blade surface of the cutting blade and the reference plane is less than 90 degrees, so that the position of the cutting blade is not at the upper and lower edges of the cutting blade.
  • this is equivalent to increasing the blade angle of the blade, usually greater than 90°.
  • the cutting belly of the aforementioned shears is a concave arc surface, which reduces the contact area between the two shears, reduces the friction between the two shears, and also enables the shears to adhere smoothly to sticky objects. Open, to achieve labor-saving operation of scissors.
  • the cutting belly of the aforementioned clip is flat, and the cutting belly of one clip is parallel to the cutting belly of the other clip, which can reduce the production cost.
  • the invention changes the position of the cutting blade and the size of the blade angle by changing the cutting edge position of the cutting blade, so as to reduce the risk of the user being cut and improve the safety of the scissors. It is especially suitable for children and primary school students to use for general manual work. When used.
  • Fig. 1 is a schematic diagram of the cutting piece structure of a conventional scissors.
  • Fig. 2 is a cross-sectional view of D-D in Fig. 1.
  • Figure 3 is a schematic diagram of a conventional clip when touching with a finger.
  • FIG. 4 is a schematic diagram of the structure of the scissors according to the embodiment of the present invention.
  • Fig. 5 is a cross-sectional view of A-A in Fig. 4.
  • Fig. 6 is an enlarged view of part C in Fig. 5.
  • Fig. 7 is a schematic diagram of the clip structure of an embodiment of the present invention.
  • Fig. 8 is a sectional view of B-B in Fig. 7.
  • Fig. 9 is a schematic diagram of the clip according to the embodiment of the present invention when touching with a finger.
  • this embodiment provides a safety scissors, including two pieces of scissors 1 hinged by rivets 3, the rear end of the scissors 3 is provided with a handle 4, the scissors 1 can be rotated around the rivet 3 as the center of rotation Rotate each other to cut, the opposite side of the two cutting pieces 1 is the cutting belly 11, the cutting belly 11 of the cutting piece 1 is a concave arc surface, and the cutting blade 10 of the cutting piece 1 is located on the side of the cutting piece 1 corresponding to the cutting belly 11.
  • a reference plane 2 perpendicular to the rotation center line of the clip 1 is formed between the two clipping pieces 1, and the angle a between the blade surface 12 of the clipping piece 1 and the reference plane 2 is less than 90 degrees.
  • the reference plane 2 is not a plane that actually exists on the scissors of the present invention, but a virtual plane for the convenience of forming an angle with the blade surface 12.
  • the cutting belly 11 of the cutting piece 1 as a concave arc surface
  • the contact area between the two cutting pieces 1 is reduced, the friction between the two cutting pieces 1 is reduced, and the cutting piece 1 is also made 1 It can be opened smoothly when sticking to sticky objects, so as to achieve the purpose of labor-saving operation of scissors. Since the included angle a between the blade surface 12 of the cutting piece 1 and the reference plane 2 is less than 90°, the position of the cutting blade 10 is set not at the upper and lower edges of the cutting piece 1, which is equivalent to cutting the piece 1.
  • the blade angle of the existing scissors is increased to greater than 90°, and the existing scissors, because the angle between the blade surface and the reference plane is less than 90°, the blade angle of the existing scissors is less than 90°, therefore,
  • the sharpness of the cutting blade 10 of the scissors of this embodiment is smaller than that of the existing one, that is, when the finger 5 touches the cutting blade 10 frontally with the same pressure, the pressure on the cutting blade 10 is also smaller than that of the existing one;
  • the cutting blade 10 of this embodiment is not located at the upper and lower edges of the cutting blade 1, but at a position between the two cutting blades 1, it is not easy for the finger 5 to touch the cutting blade 10 frontally, as shown in FIG. 9, For example, when the finger 5 touches the cutting blade 10 non-frontally, the blade surface 12 of the blade 1 will disperse most of the pressure, and the pressure applied by the finger 5 at the position of the cutting blade 10 will be greatly reduced.
  • the scissors of this embodiment can reduce the pressure exerted by the fingers on the cutting blade, thereby reducing the risk of the user being cut.
  • the safety is greatly improved, and it is generally applied to stationery scissors. It is used for general manual work by children and elementary school students.
  • the scissors of this embodiment are similar to those of embodiment 1, the difference is that the cutting belly 11 of the clip 1 is not a concave arc surface, but a flat surface, and the cutting belly 11 of one clip 1 and the cutting belly 11 of the other clip 1 11 parallel, this can reduce the production cost of scissors, but the contact area between the two scissors 1 is larger than that of the first embodiment, so that the friction between the two scissors 1 is also larger than that of the first embodiment, so the scissors of this embodiment Compared with the scissors of Example 1, it is more difficult to use, but it is not obvious to the user.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)

Abstract

一种安全剪刀，包括两片枢轴连接的剪片(1)，两片剪片相对的一侧为剪肚(11)，剪片的剪刃(10)位于剪片对应剪肚的一侧，剪片的刃面(12)与垂直于剪片的转动中心线的基准平面(2)之间的夹角a小于90度。通过改变剪片的开刃位置，保证剪片的刃面与基准平面之间的夹角a小于90度，使得剪刃的位置不处于剪片上下端边缘。这样一方面相当于将剪片的刃角变大，通常大于90°，手指(5)触碰到剪刃时与剪刃的压强相对现有的较小；另一方面，由于剪刃不位于剪片上下端边缘，手指也不易正面碰触剪刃。因此，可以降低用户被割伤的风险，相对现有的剪刀，安全性大大提高。

Description

一种安全剪刀 技术领域
本发明属于剪刀技术领域，尤其涉及一种安全剪刀。
背景技术
剪刀是生活中比较常见的剪切工具，对剪切不同物品所对剪刀的要求也是有所不同，因此，针对剪刀的习惯使用范围划分了园艺剪、厨房剪、文具剪等类型，不同类型剪刀的要求是不同的。例如园艺剪专门用于修剪花木等植物，其对剪刀的强度及锋利度要求较高，尽量使使用时省力，而厨房剪一般用于剪切蔬菜、鱼骨、鸡骨等，对剪刀的强度及锋利度也有一定的要求，但不管是园艺剪、厨房剪，由于其使用者一般是大人，大人对剪刀的操作比较规范，故被剪刀割伤的可能性较小，因此在对园艺剪、厨房剪设计时是否容易割伤等安全性考虑一般不重要；而文具剪一般是用于手工作业时使用，故文具剪的锋利度满足一般手工作业要求即可，对其锋利度及强度要求不高，且文具剪的使用者一般是儿童及小龄学生，儿童及小龄学生由于对剪刀规范使用把控不高，因此，对于文具剪的设计需要把是否容易割伤等安全性摆在重要位置。
现有不管那种类型的剪刀，其开刃位置均相同，如图1、2所示，其剪刃均是位于剪片上下端边缘，剪肚和刃面分别位于剪刃两侧，剪片的刃面与垂直于剪片的转动中心线的基准平面之间的夹角e是大于90°，而剪片的刃角越小则剪刃越锋利，则剪刀使用越省力。而现有的文具剪出于安全因素考虑，通常是把该夹角e设计尽量大些，相当于把剪片的刃角增大，减低其锋利度而减少被割伤的可能性，但现有的剪刀不管如何调整其刃角，由于其开刃位置必然注定剪片的刃角都是小于90°，并且剪刃均是位于剪片的上下端边缘，手指容易正面碰触剪刃，如图3所示，由于其剪片的刃角相对较小而比较锋利的，手指对剪刃的压强较大，存在被割伤的风险还是较大，尤其是文具剪存在较大安全隐患。
发明内容
针对现有技术的至少一种不足，本发明的目的是提供一种不容易割伤的安全 剪刀。
为达到上述目的，本发明提供的技术方案为：一种安全剪刀，包括两片枢轴连接的剪片，两片剪片相对的一侧为剪肚，剪片的剪刃位于剪片对应剪肚的一侧，所述的剪片的刃面与垂直于剪片的转动中心线的基准平面之间的夹角a小于90度。
上述方案中，通过改变剪片的开刃位置，保证剪片的刃面与基准平面之间的夹角a小于90度，使得剪刃的位置不处于剪片的上下端边缘。这样一方面相当于将剪片的刃角变大，通常大于90°，手指触碰到剪刃时对剪刃的压强相对现有的较小；另一方面，由于剪刃不位于剪片上下端边缘，手指也不易正面碰触剪刃；因此，本发明的剪刀可以降低用户被割伤的风险，相对现有的剪刀，安全性大大提高。
进一步地，上述的剪片的剪肚为凹弧面，这样减小了两剪片间的接触面积，降低了两剪片间的摩擦，同时也使剪片在粘附粘性物时可以较顺畅的打开，达到省力操作剪刀。
另一方案，上述的剪片的剪肚为平面，且其中一剪片的剪肚与另一剪片的剪肚平行，这样可降低生产成本。
本发明通过改变剪片的开刃位置，致使改变剪刃的位置及刃角大小，实现降低用户被割伤的风险，提高剪刀的安全性，尤其适用于儿童及小龄学生用于一般手工作业时使用。
附图说明
图1为现有的剪刀的剪片结构示意图。
图2为图1中的D-D剖面图。
图3为现有的剪片与手指触碰时的示意图。
图4为本发明的实施例的剪刀结构示意图。
图5为图4中的A-A剖面图。
图6为图5中的C部放大图。
图7为本发明的实施例的剪片结构示意图。
图8为图7中B-B剖面图。
图9为本发明的实施例的剪片与手指触碰时的示意图。
具体实施方式
下面结合附图对本发明做进一步说明。附图仅用于示例性说明，不能理解为对本专利的限制。
为了更简洁的说明本实施例，附图或说明中某些本领域技术人员公知的、但与本发明的主要内容不相关的零部件会有所省略。另外为便于表述，附图中某些零部件会有省略、放大或缩小，但并不代表实际产品的尺寸或全部结构。
实施例1
如图4-8所示，本实施例提供一种安全剪刀，包括两片由铆钉3铰接的剪片1，剪片3的后端设有手柄4，剪片1可以绕铆钉3为转动中心相互转动进行剪切，两片剪片1相对的一侧为剪肚11，剪片1的剪肚11为凹弧面，剪片1的剪刃10位于剪片1对应剪肚11的一侧，两片剪片1之间形成一垂直于剪片1的转动中心线的基准平面2，而剪片1的刃面12与基准平面2之间的夹角a小于90度。
需要说明的是：基准平面2不是真实存在于本发明剪刀上的平面，而是为了方便与刃面12形成夹角而虚拟的一个平面。
本实施例的剪刀，通过将剪片1的剪肚11设置为凹弧面，这样减小了两剪片1间的接触面积，降低了两剪片1间的摩擦力，同时也使剪片1在粘附粘性物时可以较顺畅的打开，达到省力操作剪刀的目的。而由于剪片1的刃面12与基准平面2之间的夹角a小于90°，把剪刃10的位置设置在不处于剪片1的上下端边缘，这样一方面相当于将剪片1的刃角增大至大于90°，而现有的剪刀，由于其刃面与基准平面之间的夹角是小于90°，故现有的剪片的刃角是小于90°的，因此，本实施例的剪刀的剪刃10锋利度相对现有的要小些，即是手指5如用同样压力正面触碰剪刃10时对剪刃10的压强相对现有的也要小；另一方面，由于本实施例的剪刃10不位于剪片1的上下端边缘，而是位于两剪片1之间的位置，因此手指5也不易正面碰触剪刃10，如图9所示，如手指5非正面触碰剪刃10时，那么剪片1的刃面12会分散大部分压强，而手指5作用于剪刃10位置的压强会大幅度变小。
综上所述，本实施例的剪刀可以减小手指作用于剪刃上的压强，从而降低用户被割伤的风险，相对现有的剪刀，安全性大大提高，一般应用于文具剪上以适用于儿童及小龄学生用于一般手工作业时使用。
实施例2
本实施例的剪刀与实施例1的类似，其区别是剪片1的剪肚11不是凹弧面，而是平面，且其中一剪片1的剪肚11与另一剪片1的剪肚11平行，这样可降低剪刀生产成本，但两剪片1间的接触面积相对实施例1的大些，使得两剪片1间的摩擦力也相对相对实施例1大些，故本实施例的剪刀使用时相对实施例1的剪刀会吃力点，但对用户感觉不明显。
以上仅是本发明相对较优的实施方式，并不构成对本发明保护范围的限定，任何在本发明的精神原则之内所作出的修改、等同替换和改进等，均应包含在本发明的权利要求保护范围之内。

Claims (3)

  1. 一种安全剪刀，包括两片枢轴连接的剪片(1)，两片剪片(1)相对的一侧为剪肚(11)，剪片(1)的剪刃(10)位于剪片(1)对应剪肚(11)的一侧，其特征在于：所述的剪片(1)的刃面(12)与垂直于剪片(1)的转动中心线的基准平面之间的夹角a小于90°。
  2. 根据权利要求1所述的安全剪刀，其特征在于：所述的剪片(1)的剪肚(11)为凹弧面。
  3. 根据权利要求1所述的安全剪刀，其特征在于：所述的剪片(1)的剪肚(11)为平面，且其中一剪片(1)的剪肚(11)与另一剪片(1)的剪肚(11)平行。
PCT/CN2020/116620 2019-09-23 2020-09-21 一种安全剪刀 WO2021057682A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN210757852U (zh) * 2019-09-23 2020-06-16 黄健亮 一种安全剪刀

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US6305088B1 (en) * 1999-06-14 2001-10-23 Harry E. Novinger Scissor cutting edge safeguard
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CN204295704U (zh) * 2014-12-19 2015-04-29 彭月桂 一种新型剪刀的v型剪片
CN204431293U (zh) * 2014-05-22 2015-07-01 株式会社和平韩国 儿童用安全剪刀
CN205111897U (zh) * 2015-10-26 2016-03-30 义乌市鼎邦文体用品有限公司 直刃型安全剪刀
CN205799606U (zh) * 2016-05-24 2016-12-14 上海市松江区车墩学校 一种儿童安全剪刀
CN210757852U (zh) * 2019-09-23 2020-06-16 黄健亮 一种安全剪刀

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DE3344863A1 (de) * 1982-12-10 1984-07-12 Kyocera Corp., Kyoto Keramische schere
US6305088B1 (en) * 1999-06-14 2001-10-23 Harry E. Novinger Scissor cutting edge safeguard
JP2003053061A (ja) * 2001-08-09 2003-02-25 Saiki:Kk 理容鋏
CN202805222U (zh) * 2012-05-30 2013-03-20 彭月桂 一种新型剪刀
CN204431293U (zh) * 2014-05-22 2015-07-01 株式会社和平韩国 儿童用安全剪刀
CN204295704U (zh) * 2014-12-19 2015-04-29 彭月桂 一种新型剪刀的v型剪片
CN205111897U (zh) * 2015-10-26 2016-03-30 义乌市鼎邦文体用品有限公司 直刃型安全剪刀
CN205799606U (zh) * 2016-05-24 2016-12-14 上海市松江区车墩学校 一种儿童安全剪刀
CN210757852U (zh) * 2019-09-23 2020-06-16 黄健亮 一种安全剪刀

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