WO2022161171A1 - 一种新型安全弹簧安装卡扣 - Google Patents

一种新型安全弹簧安装卡扣 Download PDF

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Publication number
WO2022161171A1
WO2022161171A1 PCT/CN2022/071587 CN2022071587W WO2022161171A1 WO 2022161171 A1 WO2022161171 A1 WO 2022161171A1 CN 2022071587 W CN2022071587 W CN 2022071587W WO 2022161171 A1 WO2022161171 A1 WO 2022161171A1
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WO
WIPO (PCT)
Prior art keywords
spring
safety
suspension
hole
holes
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PCT/CN2022/071587
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English (en)
French (fr)
Inventor
柯佑俊
Original Assignee
广州福悳家贸易有限公司
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
Application filed by 广州福悳家贸易有限公司 filed Critical 广州福悳家贸易有限公司
Priority to JP2023600114U priority Critical patent/JP3244934U/ja
Priority to KR2020237000013U priority patent/KR20230000841U/ko
Priority to PL443417A priority patent/PL443417A1/pl
Priority to CA3206952A priority patent/CA3206952A1/en
Publication of WO2022161171A1 publication Critical patent/WO2022161171A1/zh
Priority to ZA2023/04330A priority patent/ZA202304330B/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • F16F1/122—Attachments or mountings where coils, e.g. end coils, of the spring are rigidly clamped or similarly fixed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
    • F16F1/46—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded mainly in tension

Definitions

  • the utility model relates to the technical field of spring accessories, in particular to a novel safety spring installation buckle.
  • extension springs are widely used, and during application, both ends of the extension spring need to be connected with other components by hooks.
  • the present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent.
  • one purpose of the present invention is to propose a novel safety spring mounting clip, comprising: a spring connecting part and a hanging part, the spring connecting part is connected to one end of the hanging part; one side of the hanging part is open , and the opening is inclined downward and then bent upward to form a q-shaped hole.
  • the new spring installation buckle disclosed by the utility model the opening design of the q-shaped hole can make the installation easier, one hand can be clamped and installed, no need to use two hands and tools, and it is difficult to come out naturally, which improves the safety. coefficient.
  • Another object of the present invention is to provide a new type of safety spring installation buckle, which includes a spring connection part and a suspension part, the spring connection part is connected to one end of the suspension part; the middle part of the suspension part is provided with a second The through hole is suspended on the working part by closing the elastic hook.
  • the beneficial effect of adopting the above technical solution is that the suspension is more convenient, safe and reliable.
  • the second through hole is a square hole.
  • Another object of the present invention is to provide a new type of safety spring mounting clip, comprising a spring connecting part and a hanging part, the spring connecting part is connected to one end of the hanging part; one side of the hanging part is open, and The opening extends horizontally in the middle of the hanging portion to form an oval opening.
  • a plurality of first through holes for passing through the spring are respectively opened on both sides of the spring connecting portion, and the plurality of through holes are arranged longitudinally.
  • the beneficial effect of adopting the above technical solution is that the plurality of first through holes of the spring connecting portion are used for passing through the suspension spring, and the first through holes can isolate the noise generated by the friction at the tail end of the spring.
  • the suspension portion is integrally connected with the spring connection portion.
  • the beneficial effect of adopting the above technical solution is that the processing technology is simple and the structure is stable.
  • the number of the first through holes in each row is three or four.
  • the beneficial effect of adopting the above technical solution is that the spring can be stably suspended, the proper size of the spring mounting plate can be ensured, and the production cost can be kept low.
  • a safety wire perforation is formed in the middle of the spring connecting portion, one end of the safety wire is fixed in the safety wire through hole, and the other end is fixed on the working part.
  • the beneficial effect of adopting the above technical solution is that the setting of the safety line is used to avoid the occurrence of safety accidents after the suspension part is separated from the working part, and further safety guarantee is provided.
  • the safety line is a very strong line used for skydiving or mountaineering.
  • the present disclosure provides a novel safety spring installation buckle, which reduces the noise when the spring is in use, and the suspension part is arranged so that the user can lock with one hand. It is easy to install and will not come out naturally, which improves the safety factor.
  • FIG. 1 is a schematic structural diagram of the prior art.
  • FIG. 2 is a schematic structural diagram of Embodiment 1 provided by the present invention.
  • FIG. 3 is a schematic structural diagram of installing a spring according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic structural diagram of Embodiment 1 provided by the present invention during practical application.
  • FIG. 5 is a schematic structural diagram of Embodiment 2 provided by the present invention.
  • FIG. 6 is a schematic structural diagram of installing an upper spring according to the second embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a combination of Embodiment 1 and Embodiment 2 provided by the present invention during practical application.
  • FIG. 8 is a schematic structural diagram of Embodiment 3 provided by the present invention.
  • each reference sign is:
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • “plurality” means two or more, unless otherwise expressly and specifically defined.
  • the terms “installation”, “connection”, “connection”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements.
  • the specific meanings of the above terms in the present invention can be understood according to specific situations.
  • a first feature "on” or “under” a second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • Embodiment 1 of the present utility model discloses a new type of safety spring installation buckle, which includes a spring connection part 1 and a suspension part 2.
  • the spring connection part 1 is integrally connected to one end of the suspension part 2; the suspension part 2 is a
  • the side is opened, and the opening is inclined downward and then bent upward to form a q-shaped hole 5 .
  • Two sides of the spring connecting portion 1 are respectively provided with a plurality of first through holes 4 for penetrating the spring 3 , and the plurality of first through holes 4 are arranged longitudinally. There are three first through holes on one side, and four first through holes on the other side.
  • a safety wire perforation 9 is opened in the middle of the spring connection part 1, one end of the safety wire is fixed in the safety wire through hole 9, and the other end is fixed on the working part 8. A safety accident is avoided after the suspension part 2 is separated from the working part 8, and further safety guarantee is provided.
  • the safety line is a very strong line used for skydiving or mountaineering.
  • the setting of the q-shaped hole 5 can make the installation easier, and it will not come out naturally, which improves the safety use factor; and the spring has no noise when in use.
  • Embodiment 2 of the present utility model discloses a new type of safety spring installation buckle, which includes a spring connection part 1 and a suspension part 2, and the spring connection part 1 is integrally connected to one end of the suspension part 2; the spring connection The two sides of the part 1 are respectively provided with a plurality of first through holes 4 for piercing the springs 3, and the plurality of first through holes 4 are longitudinally arranged with a second through hole 6 in the middle, and are suspended by the self-closing elastic hook 7 on the working part 8.
  • the second through hole 6 is a square hole.
  • the suspension part 2 is integrally connected with the spring connection part 1 . There are three or four first through holes 4 in each row.
  • a safety wire hole 9 is formed in the middle of the spring connecting part 1 , one end of the safety wire is fixed in the safety wire hole 9 , and the other end is fixed on the working part 8 .
  • a safety accident is avoided after the suspension part 2 is separated from the working part 8, and further safety guarantee is provided.
  • the safety line is a very strong line used for skydiving or mountaineering.
  • the spring 3 is inserted into the first through hole 4, so that the spring 3 has no noise during use, and the elastic hook 7 is automatically closed through the second through hole 6, so that the user can It can be installed with one hand, which is easier to install and not easy to come out.
  • Embodiment 3 of the present utility model discloses a novel safety spring installation buckle, which includes a spring connecting part 1 and a hanging part 2 , and the spring connecting part 1 is integrally connected to one end of the hanging part 2 ; the spring connecting part 1 There are a plurality of first through holes 4 for passing through the spring 3 on both sides, and the plurality of first through holes 4 are arranged longitudinally; one side of the suspension part 2 is open, and the opening extends horizontally to the middle of the suspension part to form an oval shape hole.
  • the suspension part 2 is integrally connected with the spring connection part 1 . There are three or four first through holes 4 in each row.
  • a safety wire hole 9 is formed in the middle of the spring connecting part 1 , one end of the safety wire is fixed in the safety wire hole 9 , and the other end is fixed on the working part 8 .
  • a safety accident is avoided after the suspension part 2 is separated from the working part 8, and further safety guarantee is provided.
  • the safety line is a very strong line used for skydiving or mountaineering.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Clamps And Clips (AREA)
  • Emergency Lowering Means (AREA)
  • Buckles (AREA)
  • Springs (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)

Abstract

一种新型安全弹簧安装卡扣，包括：弹簧连接部（1）和悬挂部（2），弹簧连接部（1）连接于悬挂部（2）的一端；弹簧连接部（1）的两侧分别开设有多个用于穿设弹簧（3）的第一通孔（4），且多个第一通孔（4）纵向排列；悬挂部（2）一侧开口，开口向下倾斜后再向上弯折形成q型孔（5）。

Description

一种新型安全弹簧安装卡扣 技术领域
本实用新型涉及弹簧配件技术领域，更具体的说是涉及一种新型安全弹簧安装卡扣。
背景技术
在日常生活中，拉伸弹簧的应用非常广泛，而在应用时，拉伸弹簧的两端均需要挂扣与其他部件连接。
现有技术中的挂扣大多采用开口挂钩，开口挂钩使用和安装很方便，但是开口挂钩会有弹簧脱离出来的危险，非常不安全，这样用在挂婴儿摇篮是非常危险的。
鉴于安全考虑，如图1所示，有的采用关口的弹簧挂扣，即拉伸弹簧的两端构造用钢丝绕成一个圈，形成关口拉伸弹簧，但是在安装时需要撇开这个线圈才能安装，在安装过程中需要用到工具来开，这样就需要两只手配合操作工具，极为不方便，如果没有工具一般用户用手指直接撇开，有时候不小心会伤到手指甲。而且在拉伸弹簧工作时，钢丝与弹簧之间因为摩擦会产生噪音，若用于婴儿摇篮床时，则会影响婴儿睡眠。
因此，如何提供一种能够提高安全系数的新型弹簧安装卡扣是本领域技术人员亟需解决的问题。
实用新型内容
本实用新型旨在至少在一定程度上解决现有技术中的上述技术问题之一。
为此，本实用新型的一个目的在于提出一种新型安全弹簧安装卡扣，包括：弹簧连接部和悬挂部，所述弹簧连接部连接于所述悬挂部的一端；所述悬挂部一侧开口，且所述开口向下倾斜后再向上弯折形成q型孔。
本实用新型公开的新型弹簧安装卡扣，q型孔的开口设计可以让安装更加容易，一只手就可卡上安装，不需要用到两只手和工具，而且自然脱出很难，提高安全系数。
本实用新型的另一个目的在于，提供一种新型安全弹簧安装卡扣，包括弹簧连接部和悬挂部，所述弹簧连接部连接于所述悬挂部的一端；所述悬挂部中部开设有第二通孔，且通过闭合弹性挂钩悬挂于工作部件上。
采取上述技术方案的有益效果是，使得悬挂更加方便，且安全可靠。
优选的，所述第二通孔为方孔。
采取上述技术方案的有益效果是，方孔与闭合弹性挂钩相匹配。
本实用新型的另一个目的在于，提供一种新型安全弹簧安装卡扣，包括弹簧连接部和悬挂部，所述弹簧连接部连接于所述悬挂部的一端；所述悬挂部一侧开口，且所述开口水平延伸所述悬挂部中部形成椭圆形开孔。
优选的，所述弹簧连接部的两侧分别开设有多个用于穿设弹簧的第一通孔，且多个所述通孔纵向排列。
采取上述技术方案的有益效果是，弹簧连接部的多个第一通孔用于穿设悬挂弹簧，第一通孔则可以隔离弹簧尾端由于摩擦所产生的噪音。
优选的，所述悬挂部与所述弹簧连接部一体连接。
采取上述技术方案的有益效果是，加工工艺简单且结构稳固。
优选的，每列所述第一通孔为三个或四个。
采取上述技术方案的有益效果是，既能将弹簧稳定地悬挂，又能保证弹簧安装板合适的尺寸，保持较低的生产成本。
优选的，所述弹簧连接部的中部开设有安全线穿孔，安全线的一端固定在所述安全线穿孔内，另一端固定于所述工作部件上。
采取上述技术方案的有益效果是，安全线的设置用于避免悬挂部脱离工作部件后发生安全事故，提供了进一步的安全保障。其中安全线采用跳伞或登山采用的很结实的线。
经由上述的技术方案可知，与现有技术相比，本实用新型公开提供了一种新型安全弹簧安装卡扣，降低了弹簧使用时候的噪音，且悬挂部的设置使得用户一只手就能卡上安装，安装方便，且不会自然脱出，提高了安全系数。
附图说明
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为现有技术中的结构示意图。
图2为本实用新型提供的实施例一的结构示意图。
图3为本实用新型提供的实施例一安装上弹簧的结构示意图。
图4为本实用新型提供的实施例一实际应用时的结构示意图。
图5为本实用新型提供的实施例二的结构示意图。
图6为本实用新型提供的实施例二安装上弹簧的结构示意图。
图7为本实用新型提供的实施例一和实施例二组合实际应用时的结构示意图。
图8为本实用新型提供的实施例三的结构示意图。
其中，各附图标记为：
1-弹簧连接部，2-悬挂部，3-弹簧，4-第一通孔，5-q型孔，6-第二通孔，7-自动闭合弹性挂钩，8-工作部件，9-安全线穿孔，10-椭圆形开孔。
具体实施方式
下面详细描述本实用新型的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本实用新型，而不能理解为对本实用新型的限制。
在本实用新型的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本实用新型的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本实用新型中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本实用新型中的具体含义。
在本实用新型中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
如图2-4，本实用新型实施例1公开了一种新型安全弹簧安装卡扣，包括弹簧连接部1和悬挂部2，弹簧连接部1一体连接于悬挂部2的一端；悬挂部2一侧开口，且开口向下倾斜后再向上弯折形成q型孔5。弹簧连接部1的两侧分别开设有多个用于穿设弹簧3的第一通孔4，且多个第一通孔4纵向排列。一侧的第一通孔为三个，另一侧的第一通孔为四个。弹簧连接部1的中部开设有安全线穿孔9，安全线的一端固定在安全线穿孔9内，另一端固定于工作 部件8上。避免悬挂部2脱离工作部件8后发生安全事故，提供了进一步的安全保障。其中安全线采用跳伞或登山采用的很结实的线。
本实用新型实施例1公开的新型弹簧安装卡扣，q型孔5的设置可以让安装更加容易，且不会自然脱出，提高了安全使用系数；并弹簧在使用时没有噪音。
如图5-6所示，本实用新型实施例2公开了一种新型安全弹簧安装卡扣，包括弹簧连接部1和悬挂部2，弹簧连接部1一体连接于悬挂部2的一端；弹簧连接部1的两侧分别开设有多个用于穿设弹簧3的第一通孔4，且多个第一通孔4纵向排列中部开设有第二通孔6，且通过自动闭合弹性挂钩7悬挂于工作部件8上。第二通孔6为方孔。悬挂部2与弹簧连接部1一体连接。每列第一通孔4为三个或四个。弹簧连接部1的中部开设有安全线穿孔9，安全线的一端固定在安全线穿孔9内，另一端固定于工作部件8上。避免悬挂部2脱离工作部件8后发生安全事故，提供了进一步的安全保障。其中安全线采用跳伞或登山采用的很结实的线。
本实用新型实施例2公开的新型弹簧安装卡扣，弹簧3穿设于第一通孔4内，使得弹簧3在使用时没有噪音，且自动闭合弹性挂钩7穿过第二通孔6，用户一只手即可安装，安装更加容易，且不易脱出。
如图8所示，本实用新型实施例3公开了一种新型安全弹簧安装卡扣，包括弹簧连接部1和悬挂部2，弹簧连接部1一体连接于悬挂部2的一端；弹簧连接部1的两侧分别开设有多个用于穿设弹簧3的第一通孔4，且多个第一通孔4纵向排列；悬挂部2一侧开口，且开口水平延伸至悬挂部中部形成椭圆形开孔。悬挂部2与弹簧连接部1一体连接。每列第一通孔4为三个或四个。弹簧连接部1的中部开设有安全线穿孔9，安全线的一端固定在安全线穿孔9内，另一端固定于工作部件8上。避免悬挂部2脱离工作部件8后发生安全事故，提供了进一步的安全保障。其中安全线采用跳伞或登山采用的很结实的线。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本实用新型的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实 施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。此外，本领域的技术人员可以将本说明书中描述的不同实施例或示例进行接合和组合。
尽管上面已经示出和描述了本实用新型的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本实用新型的限制，本领域的普通技术人员在本实用新型的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (8)

  1. 一种新型安全弹簧安装卡扣，其特征在于，包括：弹簧连接部(1)和悬挂部(2)，所述弹簧连接部(1)连接于所述悬挂部(2)的一端；所述悬挂部(2)一侧开口，且其开口向下倾斜后再向上弯折形成q型孔(5)。
  2. 一种新型安全弹簧安装卡扣，其特征在于，包括：弹簧连接部(1)和悬挂部(2)，所述弹簧连接部(1)连接于所述悬挂部(2)的一端；所述悬挂部(2)中部开设有第二通孔(6)，且通过自动闭合弹性挂钩(7)悬挂于工作部件(8)上。
  3. 根据权利要求2所述的一种新型安全弹簧安装卡扣，其特征在于，所述第二通孔(6)为方孔。
  4. 一种新型安全弹簧安装卡扣，其特征在于，包括弹簧连接部(1)和悬挂部(2)，所述弹簧连接部(1)连接于所述悬挂部(2)的一端；所述悬挂部(2)一侧开口，且其开口水平向所述悬挂部(2)中部形成椭圆形开孔(10)。
  5. 根据权利要求1或3或4所述的一种新型安全弹簧安装卡扣，其特征在于，所述弹簧连接部(1)的两侧分别开设有多个用于穿设弹簧(3)的第一通孔(4)，且多个所述第一通孔(4)纵向排列。
  6. 根据权利要求5所述一种新型安全弹簧安装卡扣，其特征在于，所述悬挂部(2)与所述弹簧连接部(1)一体连接。
  7. 根据权利要求6所述一种新型安全弹簧安装卡扣，其特征在于，每列所述第一通孔(4)为三个或四个。
  8. 根据权利要求7所述的一种新型安全弹簧安装卡扣，其特征在于，所述弹簧连接部(1)的中部开设有安全线穿孔(9)，安全线的一端固定在所述安全线穿孔(9)内，另一端固定于所述工作部件(8)上。
PCT/CN2022/071587 2021-02-01 2022-01-12 一种新型安全弹簧安装卡扣 WO2022161171A1 (zh)

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