KR20090032364A - Bolt for preventing over-torque - Google Patents

Bolt for preventing over-torque Download PDF

Info

Publication number
KR20090032364A
KR20090032364A KR1020070097542A KR20070097542A KR20090032364A KR 20090032364 A KR20090032364 A KR 20090032364A KR 1020070097542 A KR1020070097542 A KR 1020070097542A KR 20070097542 A KR20070097542 A KR 20070097542A KR 20090032364 A KR20090032364 A KR 20090032364A
Authority
KR
South Korea
Prior art keywords
bolt
shear
torque
over
bolt body
Prior art date
Application number
KR1020070097542A
Other languages
Korean (ko)
Inventor
이원경
Original Assignee
콘티넨탈 오토모티브 시스템 주식회사
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 콘티넨탈 오토모티브 시스템 주식회사 filed Critical 콘티넨탈 오토모티브 시스템 주식회사
Priority to KR1020070097542A priority Critical patent/KR20090032364A/en
Publication of KR20090032364A publication Critical patent/KR20090032364A/en

Links

Images

Classifications

    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/003—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool star-shaped or multi-lobular, e.g. Torx-type, twelve-point star
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F16B35/044—Specially-shaped ends
    • F16B35/045—Specially-shaped ends for retention or rotation by a tool
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/06—Specially-shaped heads

Abstract

An over-torque prevention bolt is provided to prevent damage of the bolt thread by allowing the shear protrusion and groove formed on the bolt body and head to be broken when applied with over-torque. An over-torque prevention bolt includes a bolt body(10) having more than one shear protrusion(12) formed on one side in the longitudinal direction, and a bolt head(20) for rotating the bolt body which has a penetrated central part and a shear protrusion groove(22) formed on the inside surface of the penetrated central part to be fastened to or separated from the shear protrusion. When over-torque is applied to the bolt body rotated with the bolt head, the shear protrusion and the shear protrusion groove are broken in order to stop the tightening of the bolt body.

Description

과토크 방지 볼트{BOLT FOR PREVENTING OVER-TORQUE}Over-torque Bolts {BOLT FOR PREVENTING OVER-TORQUE}

본 발명은 과토크 방지 볼트에 관한 것으로, 특히 볼트머리에 의해 회전되는 볼트몸체에 무리한 과토크가 걸리게 되는 경우에 볼트머리와 볼트몸체의 연결부위가 파괴되도록 하여 볼트몸체에 형성되는 나사의 파손을 방지할 수 있도록 한 과토크 방지 볼트에 관한 것이다.The present invention relates to an over-torque bolt, and in particular, when excessive torque is applied to the bolt body that is rotated by the bolt head, the connection part of the bolt head and the bolt body is broken so that the screw formed on the bolt body is damaged. An anti-torque bolt is provided to prevent it.

일반적으로, 볼트는 각종 부재를 체결하는 수단으로 사용되는 것으로, 다양한 종류가 제시되어 있다.In general, the bolt is used as a means for fastening the various members, various types have been proposed.

특히 볼트는 적정한 조임을 위해서 각각의 규격에 해당하는 외력의 크기인 토크가 한정되어 있으며, 이러한 토크 내에서 각종 부재를 체결하게 된다.In particular, the bolt is limited in torque, which is the magnitude of the external force corresponding to the respective standards for proper tightening, it is to fasten the various members within this torque.

그러나, 종래에 각종 부재를 상호 결합하기 위한 볼트의 체결시 무리한 조임력에 의해 볼트에 적정 조임력 이상의 과토크가 걸리게 되는 경우에는 볼트의 나사가 파손되어 볼트로서의 기능을 상실하게 되는 단점이 있었다.However, in the past, when an excessive torque over the proper tightening force is applied to the bolt by an excessive tightening force when the bolts are coupled to each other, there is a disadvantage in that the screw of the bolt is broken and loses its function as a bolt.

본 발명은 상기와 같은 종래기술의 문제점을 해소하기 위하여 안출한 것으로, 본 발명의 목적은 볼트의 체결시 무리한 과토크로 인한 나사의 파손을 방지할 수 있도록 한 과토크 방지 볼트를 제공하는 데 있다.The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide an over-torque prevention bolt that can prevent the damage of the screw due to excessive over-torque when the bolt is tightened. .

상기한 목적을 달성하기 위한 본 발명은,The present invention for achieving the above object,

일정한 길이를 가지며 길이방향의 일측 외주면에 하나 이상의 전단돌기가 형성되는 볼트몸체가 구비되고,Is provided with a bolt body having a predetermined length and one or more shear projections formed on one side outer peripheral surface of the longitudinal direction,

중앙부가 관통되게 형성되고 상기 중앙부의 내주면에 상기 전단돌기에 결합과 분리 가능하게 설치되는 전단돌기홈이 형성되어 상기 볼트몸체를 회전시키는 볼트머리가 구비되며,It is formed to penetrate the center portion is formed in the inner peripheral surface of the shear projection projection groove is formed to be coupled to the shear protrusion detachably provided with a bolt head for rotating the bolt body,

볼트의 체결시 상기 볼트머리에 의해 회전되는 상기 볼트몸체에 과토크가 걸리는 경우에 볼트몸체의 체결이 중지되도록 상기 전단돌기와 전단돌기홈이 파괴되는 것을 특징으로 하는 과토크 방지 볼트를 제공한다.It provides an over-torque prevention bolt, characterized in that the shear protrusion and the shear projection groove is destroyed so that the fastening of the bolt body is stopped when the over torque is applied to the bolt body rotated by the bolt head when the bolt is fastened.

또한, 상기 전단돌기는 나사산 형상으로 형성되고, 상기 전단돌기홈은 전단돌기에 대응되게 형성된 것이다.In addition, the shear protrusion is formed in a thread shape, the shear projection groove is formed to correspond to the shear projection.

또, 상기 전단돌기의 개수와 형상에 따라 상기 볼트몸체 토크의 크기가 조절되는 것이다.In addition, the size of the bolt body torque is adjusted according to the number and shape of the shear projections.

또, 상기 볼트몸체의 일측 끝단부에는 과토크로 인한 전단 파괴 후, 체결된 볼트몸체를 제거하기 위한 요홈이 형성된 것이다.In addition, one end of the bolt body is formed with a groove for removing the bolt body fastened after shear failure due to over-torque.

이때, 요홈은 육각형, 십자형, 일자형 중 어느 하나의 형상으로 형성되는 것이다.At this time, the groove is formed in any one of a hexagonal, cross-shaped, straight.

본 발명에 의한 과토크 방지 볼트는 볼트몸체의 일측에 형성되는 전단돌기에 전단돌기홈이 형성되는 볼트머리를 결합 및 분리 가능하게 설치하여 볼트의 체결시 볼트머리에 의해 회전되는 볼트몸체에 무리한 과토크가 걸리는 경우에 볼트몸체의 체결이 중지되도록 전단돌기와 전단돌기홈이 파괴되도록 함으로써, 과토크로 인한 볼트몸체에 형성되는 나사의 파손을 방지할 수 있는 유용한 효과가 제공되는 것이다.The over-torque prevention bolt according to the present invention is installed in the shear protrusion formed on one side of the bolt body so that the bolt head formed with the shear projection groove can be detachably coupled to the bolt body rotated by the bolt head when the bolt is fastened. When the torque is applied, the shear protrusion and the shear protrusion groove are destroyed so that the fastening of the bolt body is stopped, thereby providing a useful effect of preventing the breakage of the screw formed on the bolt body due to excessive torque.

이하, 본 발명의 바람직한 실시 예에 따른 과토크 방지 볼트에 대하여 첨부된 도면을 참조하여 상세하게 설명하면 다음과 같다.Hereinafter, the overtorque prevention bolt according to the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 과토크 방지 볼트는, 도 1 및 도 2를 참조하면, 길이방향의 일측 외주면에 하나 이상의 전단돌기(12)가 형성되는 볼트몸체(10)와, 중앙부가 관통되게 형성되고 중앙부의 내주면에 상기 전단돌기(12)에 결합과 분리 가능하게 설치되는 전단돌기홈(22)이 형성되어 볼트몸체(10)를 회전시키는 볼트머리(20)로 구성된다.1 and 2, the over-torque prevention bolt according to the present invention, the bolt body 10 is formed with one or more shearing projections 12 formed on one side outer peripheral surface of the longitudinal direction, the central portion is formed through the central portion Shear protrusion groove 22 is formed on the inner circumferential surface so as to be coupled to and detachable from the shear protrusion 12 and is formed of a bolt head 20 for rotating the bolt body 10.

이를 더욱 상세히 설명하면, 볼트몸체(10)는 일정한 길이를 가지며 길이방향의 일측 외주면에 하나 이상의 전단돌기(12)가 돌출되게 형성되어 있다. 전단돌 기(12)는 나사산 형상으로 형성되는 것이 바람직하나, 굳이 이에 한정하지는 아니한다.In more detail, the bolt body 10 has a predetermined length and is formed to protrude at least one shear protrusion 12 on one side outer peripheral surface of the longitudinal direction. The shear protrusion 12 is preferably formed in a thread shape, but is not necessarily limited thereto.

또한, 볼트몸체(10)의 일측 끝단부에는 과토크로 인한 전단 파괴 후, 각종 부재 등에 체결된 볼트몸체(10)를 제거할 수 있도록 요홈(14)이 형성되어 있다. 요홈(14)은 육각형, 십자형, 일자형 등으로 형성될 수 있으며, 본 실시 예에서는 볼트몸체(10)의 제거시 공지의 제거도구, 예컨대 육각 렌치를 이용하여 제거할 수 있도록 육각형으로 형성된 것이 도시되어 있다.In addition, a groove 14 is formed at one end of the bolt body 10 so as to remove the bolt body 10 fastened to various members after shear failure due to over-torque. The groove 14 may be formed in a hexagonal, cross-shaped, straight, etc., in the present embodiment is shown that formed in the hexagon to be removed using a known removal tool, for example, a hexagon wrench when the bolt body 10 is removed. have.

또, 이외에도 요홈(14)은 각종 부재에 체결된 볼트몸체(10)를 제거할 수 있도록 공지의 제거도구와 부합되는 다양한 형상으로 형성될 수 있음은 물론이다.In addition, the groove 14 may be formed in a variety of shapes to match the known removal tool to remove the bolt body 10 fastened to the various members.

볼트머리(20)는 중앙부가 관통되도록 형성되고 그 중앙부의 내주면에는 볼트몸체(10)의 전단돌기(12)에 결합과 분리 가능하게 설치되도록 전단돌기홈(22)이 형성되어 있다. 이때, 전단돌기홈(22)은 전단돌기(12)의 형상과 대응되도록 형성되어 있다.The bolt head 20 is formed so as to penetrate the center portion, and a shear projection groove 22 is formed on the inner circumferential surface of the center portion so as to be detachably coupled to the shear protrusion 12 of the bolt body 10. At this time, the shear projection groove 22 is formed to correspond to the shape of the shear projection 12.

이러한 구성을 갖는 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention having such a configuration as follows.

각종 부재를 상호 결합하기 위한 볼트의 체결시 볼트가 체결위치에 위치되고 볼트몸체(10)의 일측에 볼트머리(20)가 설치된 상태에서, 체결도구(도면에 미도시)를 이용하여 볼트머리(20)를 회전시키게 되면 볼트머리(20)에 의해 볼트몸체(10)가 회전하게 된다.When the bolt for fastening the various members to each other, the bolt is located in the fastening position and the bolt head 20 is installed on one side of the bolt body 10, using the fastening tool (not shown) When the 20 is rotated, the bolt body 10 is rotated by the bolt head 20.

즉, 볼트몸체(10)는 그 일측에 형성되는 전단돌기(12)에 전단돌기홈(22)이 결합되도록 설치되어 있으므로 볼트머리(20)로부터 전달되는 회전력에 의해 회전하 게 되는 것이다.That is, the bolt body 10 is to be rotated by the rotational force transmitted from the bolt head 20 is installed so that the shear projection groove 22 is coupled to the shear projection 12 formed on one side thereof.

이러한 볼팅 작업시 각종 부재에 체결되는 볼트몸체(10)에 무리한 과토크가 걸리게 되면, 볼트머리(20)의 회전에 의해 전단돌기(12)와 전단돌기홈(22)의 파괴에 따른 전단 파괴가 이루어지고, 이에 볼트머리(20)의 회전력이 볼트몸체(20)로 전달되지 않게 되어 볼트몸체(10)의 체결이 중지되므로 과토크로 인한 볼트몸체(10)에 형성되는 나사의 파손을 방지할 수 있다. 이때, 파손된 볼트머리(20)는 볼트몸체(10)의 전단돌기(12)에 고정하거나 또는 전단돌기(12)로부터 분리할 수 있다.When excessive bolting is applied to the bolt body 10 which is fastened to various members during the bolting operation, shear failure due to the destruction of the shear protrusion 12 and the shear protrusion groove 22 is caused by the rotation of the bolt head 20. In this case, the rotational force of the bolt head 20 is not transmitted to the bolt body 20 so that the fastening of the bolt body 10 is stopped, thereby preventing damage to the screw formed on the bolt body 10 due to over-torque. Can be. In this case, the damaged bolt head 20 may be fixed to the shear protrusion 12 of the bolt body 10 or may be separated from the shear protrusion 12.

한편, 과토크로 인한 전단 파괴 후, 체결된 볼트몸체(10)는 요홈(14)에 육각 렌치를 결합하여 용이하게 제거할 수 있다.On the other hand, after shear failure due to over-torque, the fastened bolt body 10 can be easily removed by coupling the hexagon wrench to the groove (14).

따라서 본 발명은 볼트 체결시 과토크를 방지하여 적정 조임력으로 각종 부재를 상호 결합할 수 있고, 전단 파괴 후, 각종 부재 등에 체결된 볼트는 육각 렌치를 이용하여 용이하게 제거할 수 있게 되는 것이다.Therefore, the present invention can prevent the over-torque at the time of fastening the bolts can be coupled to each other by an appropriate tightening force, and after the shear failure, the bolts fastened to the various members can be easily removed using a hexagon wrench.

한편, 도면에 도시되지 않았지만 본 발명은 볼트몸체(10)에 형성되는 전단돌기(12)의 개수와 형상에 따라 볼트몸체(10)의 토크의 크기를 조절할 수 있다.On the other hand, although not shown in the drawing the present invention can adjust the magnitude of the torque of the bolt body 10 according to the number and shape of the shear projections 12 formed in the bolt body (10).

즉, 전단돌기(12)의 개수를 늘려서 볼트몸체(10)의 토크의 크기를 조절하거나 또는 전달돌기(12)의 형상을 사각형상이나 마름모형상으로 형성하여 토크의 크기를 조절할 수 있다. 또한, 전단돌기(12)의 개수와 형상의 조합을 통해 토크의 크기를 조절할 수도 있을 것이다. 이때, 볼트머리(20)의 전단돌기홈(22)은 전단돌기(12)와 대응되는 형상으로 형성되게 된다.That is, by increasing the number of the front end projections 12 to adjust the magnitude of the torque of the bolt body 10 or to form the shape of the transmission projections 12 in the shape of a square or rhombus can be adjusted the magnitude of the torque. In addition, the magnitude of the torque may be adjusted through a combination of the number and shape of the shear protrusions 12. At this time, the shear projection groove 22 of the bolt head 20 is formed in a shape corresponding to the shear projection 12.

이상에서는 본 발명을 실시 예로써 설명하였으나, 본 발명은 상기한 실시 예에 한정되지 아니하며, 특허청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형이 가능할 것이다.The present invention has been described above by way of example, but the present invention is not limited to the above-described embodiment, and those skilled in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Anyone can make a variety of variations.

도 1은 본 발명의 바람직한 실시 예에 따른 과토크 방지 볼트를 나타낸 사시도, 그리고1 is a perspective view showing an over-torque prevention bolt according to a preferred embodiment of the present invention, and

도 2a와 도 2b는 본 발명에 따른 과토크 방지 볼트의 체결에 따른 전단 파괴 전과 전단 파괴 후를 나타낸 도면이다.2a and 2b is a view showing before and after shear failure according to the fastening of the anti-torque bolt according to the present invention.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

10 : 볼트몸체 12 : 전단돌기10: bolt body 12: shear projection

14 : 요홈14: groove

20 : 볼트머리 22 : 전단돌기홈20: bolt head 22: shear projection groove

Claims (5)

일정한 길이를 가지며 길이방향의 일측 외주면에 하나 이상의 전단돌기(12)가 형성되는 볼트몸체(10)가 구비되고,It is provided with a bolt body 10 having a predetermined length and at least one shear projection 12 is formed on one side outer peripheral surface in the longitudinal direction, 중앙부가 관통되게 형성되고 상기 중앙부의 내주면에 상기 전단돌기(12)에 결합과 분리 가능하게 설치되는 전단돌기홈(22)이 형성되어 상기 볼트몸체(10)를 회전시키는 볼트머리(20)가 구비되며,A central head is formed to penetrate and a shear protrusion groove 22 is formed on the inner circumferential surface of the central part so as to be coupled to and detachable from the shear protrusion 12, and the bolt head 20 for rotating the bolt body 10 is provided. , 볼트의 체결시 상기 볼트머리(20)에 의해 회전되는 상기 볼트몸체(10)에 과토크가 걸리는 경우에 볼트몸체(10)의 체결이 중지되도록 상기 전단돌기(12)와 전단돌기홈(22)이 파괴되는 것을 특징으로 하는 과토크 방지 볼트.The shear protrusion 12 and the shear protrusion groove 22 to stop the fastening of the bolt body 10 when the torque is applied to the bolt body 10 rotated by the bolt head 20 when the bolt is fastened. Over-torque prevention bolt, characterized in that destroyed. 청구항 1에 있어서,The method according to claim 1, 상기 전단돌기(12)는 나사산 형상으로 형성되고, 상기 전단돌기홈(22)은 전단돌기(12)에 대응되게 형성된 것을 특징으로 하는 과토크 방지 볼트.The shear projection 12 is formed in a thread shape, the shear projection groove 22 is an over-torque prevention bolt, characterized in that formed to correspond to the shear projection (12). 청구항 1에 있어서,The method according to claim 1, 상기 전단돌기(12)의 개수와 형상에 따라 상기 볼트몸체(10) 토크의 크기가 조절되는 것을 특징으로 하는 과토크 방지 볼트.Over-torque prevention bolt, characterized in that the size of the bolt body 10 torque is adjusted according to the number and shape of the shear projections (12). 청구항 1 내지 청구항 3 중 어느 한 항에 있어서,The method according to any one of claims 1 to 3, 상기 볼트몸체(10)의 일측 끝단부에는 과토크로 인한 전단 파괴 후, 체결된 볼트몸체(10)를 제거하기 위한 요홈(14)이 형성된 것을 특징으로 하는 과토크 방지 볼트.One end of the bolt body (10) over-torque prevention bolt, characterized in that the groove 14 for removing the fastened bolt body 10 is formed after shear failure due to over-torque. 청구항 4에 있어서, 상기 요홈(14)은 육각형, 십자형, 일자형 중 어느 하나의 형상으로 형성되는 것을 특징으로 하는 과토크 방지 볼트.5. The over-torque prevention bolt according to claim 4, wherein the recess is formed in one of a hexagon, a cross, and a straight shape.
KR1020070097542A 2007-09-27 2007-09-27 Bolt for preventing over-torque KR20090032364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070097542A KR20090032364A (en) 2007-09-27 2007-09-27 Bolt for preventing over-torque

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070097542A KR20090032364A (en) 2007-09-27 2007-09-27 Bolt for preventing over-torque

Publications (1)

Publication Number Publication Date
KR20090032364A true KR20090032364A (en) 2009-04-01

Family

ID=40759196

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070097542A KR20090032364A (en) 2007-09-27 2007-09-27 Bolt for preventing over-torque

Country Status (1)

Country Link
KR (1) KR20090032364A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015187504A (en) * 2013-12-27 2015-10-29 株式会社ロックン・ボルト Bolt
CN105257661A (en) * 2015-11-20 2016-01-20 李家海 Stealth screw with movable nut
WO2016153196A1 (en) * 2015-03-26 2016-09-29 최태진 Shackle for preventing screw-bolt from being loosened by reverse rotation
CN106050870A (en) * 2016-08-15 2016-10-26 钦州学院 Bolt with crossed threaded end socket
CN106089902A (en) * 2016-08-15 2016-11-09 钦州学院 A kind of the most stubborn stud with cross threaded end
CN108561403A (en) * 2018-07-13 2018-09-21 嘉兴涵祺汽配科技有限公司 A kind of high-strength bolt easy to use
CN110062604A (en) * 2016-10-10 2019-07-26 西特尼斯Ag Screwdriver with integrated torque protection

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015187504A (en) * 2013-12-27 2015-10-29 株式会社ロックン・ボルト Bolt
WO2016153196A1 (en) * 2015-03-26 2016-09-29 최태진 Shackle for preventing screw-bolt from being loosened by reverse rotation
CN105257661A (en) * 2015-11-20 2016-01-20 李家海 Stealth screw with movable nut
CN106050870A (en) * 2016-08-15 2016-10-26 钦州学院 Bolt with crossed threaded end socket
CN106089902A (en) * 2016-08-15 2016-11-09 钦州学院 A kind of the most stubborn stud with cross threaded end
CN110062604A (en) * 2016-10-10 2019-07-26 西特尼斯Ag Screwdriver with integrated torque protection
CN108561403A (en) * 2018-07-13 2018-09-21 嘉兴涵祺汽配科技有限公司 A kind of high-strength bolt easy to use

Similar Documents

Publication Publication Date Title
KR20090032364A (en) Bolt for preventing over-torque
US11045925B2 (en) Anti-slip fastener remover tool
CN113770963B (en) Multi-clamping point sleeve screwdriver head
EP3898100B1 (en) Anti-slip fastener remover tool
KR20150053071A (en) Locking device for preventing loosening
JP2000257623A (en) Bolt removal preventing structure
JPH11173315A (en) Combination of screw and driver bit or wrench
US20190376547A1 (en) Fastening structure
JP2020528127A (en) Plugs and bolts
KR20150137910A (en) Anti-loose bolt and nut
JP2018040376A (en) Fastener
JP2012172780A (en) Locking device for fastener
JP2017141853A (en) Method for manufacturing fastener comprising bolt and nut
KR20180043692A (en) Non-release bolt and nut
JP2006010062A (en) Tightening device for assuring secure connection
KR20090032367A (en) Bolt for anti-loose
KR20010077809A (en) Bolt assembly for unfastening prevention
JP5300069B2 (en) Tamper-proof bolt and method of using the same
JP2010255675A (en) Bolt and nut for preventing detachment
JP2001330020A (en) Removal preventing material for screw
KR200343780Y1 (en) lock nut
KR200197004Y1 (en) Bolt assembly for unfastening prevention
JP2013221617A (en) Lock nut
JPH11325021A (en) Nut and bolt/nut
JP3103067B2 (en) Nut removal prevention structure

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application