WO2020213774A1 - 너트 풀림방지 장치 - Google Patents
너트 풀림방지 장치 Download PDFInfo
- Publication number
- WO2020213774A1 WO2020213774A1 PCT/KR2019/004766 KR2019004766W WO2020213774A1 WO 2020213774 A1 WO2020213774 A1 WO 2020213774A1 KR 2019004766 W KR2019004766 W KR 2019004766W WO 2020213774 A1 WO2020213774 A1 WO 2020213774A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring
- nut
- bolt
- prevention device
- loosening prevention
- Prior art date
Links
- 230000002265 prevention Effects 0.000 title claims abstract description 38
- 238000003780 insertion Methods 0.000 claims abstract description 21
- 230000037431 insertion Effects 0.000 claims abstract description 21
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000011295 pitch Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/38—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt with a second part of the screw-thread which may be resiliently mounted
-
- 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
- F16B37/00—Nuts or like thread-engaging members
- F16B37/14—Cap nuts; Nut caps or bolt caps
-
- 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/32—Locking by means of a pawl or pawl-like tongue
Definitions
- the present invention relates to a device for preventing loosening of a nut, and more particularly, to maintain a stable state of a structure fastened using a bolt and a nut by allowing a nut to be firmly maintained even if vibration is continuously applied. It relates to a nut loosening prevention device.
- bolts and nuts are commonly used to couple two or more members to each other.
- FIG. 1 is a perspective view showing a structure in which a conventional bolt and nut are fastened.
- the bolt and nut are screwed together to couple the two members.
- a continuous vibration or shock is applied to the fastening part while the bolt and nut are fastened, the bolt and nut There is also a phenomenon that slowly loosens in the opposite direction.
- the bolts and nuts are loosened due to vibrations and shocks generated during the driving of the railroad vehicle.
- the present invention was conceived to solve the above problems, and the nut loosening prevention device according to the present invention
- the spring has a free end having a diameter larger than the diameter of the bolt body thread at one end
- the other end of the spring may be further provided with a fixed end bent in an outward direction.
- the leaf spring is provided with an insertion hole fastened to the fixing end of the spring, and the spring can be fixed by inserting the fixing end into the insertion hole.
- connection portion between the free end and a region other than the free end may be bent downwardly inclined at a predetermined angle in a diagonal direction.
- the cap member may include an opening surface formed by cutting one side of the outer surface toward the other side of a portion into which the nut and the spring are inserted; And a mounting groove which is formed to be recessed from the opening surface by a predetermined depth and into which the leaf spring is inserted.
- the plate surface of the leaf spring may be bent to form an inclination at a predetermined angle, and may have a shape characteristic of pressing inward while being inserted into the mounting groove.
- the installation process of the nut loosening prevention device according to the present invention is as follows.
- the free end is rotated sufficiently until it comes into close contact with the upper surface of the nut, and the fixed end is brought to a position capable of being fastened with the leaf spring.
- a nut loosening prevention device can be installed by inserting one end of the leaf spring into the mounting groove of the cap member, and fixing the position of the spring by inserting the fixing end through the insertion hole.
- FIG. 1 is a perspective view showing a structure in which a conventional bolt and nut are fastened
- FIG. 2 is an exploded perspective view showing an exploded structure of a nut loosening prevention device according to an embodiment of the present invention
- 3A and 3B are enlarged perspective views showing an enlarged structure of a spring provided in the nut loosening prevention device according to an embodiment of the present invention
- FIG. 4 is a perspective view showing a structure in which a nut loosening prevention device according to an embodiment of the present invention is assembled
- FIG. 5 is a perspective view showing a structure as viewed from the rear of the nut loosening prevention device according to an embodiment of the present invention
- FIG. 6 is a perspective view showing a structure in which a nut loosening preventing device according to an embodiment of the present invention is assembled
- FIGS. 7A to 7C are assembly diagrams sequentially showing an operation in which the nut loosening prevention device according to an embodiment of the present invention is assembled to a bolt
- FIG. 8 is a longitudinal cross-sectional view showing a structure in which a nut loosening prevention device according to an embodiment of the present invention is assembled.
- connection portion 120 fixed end 130: connection portion
- cap member 210 opening surface
- FIG. 2 is an exploded perspective view showing the structure of a nut loosening prevention device according to an embodiment of the present invention
- FIGS. 3A and 3B are a structure of a spring provided in the nut loosening prevention device according to an embodiment of the present invention.
- FIG. 4 is a perspective view showing a structure in which a nut loosening prevention device according to an embodiment of the present invention is assembled
- FIG. 5 is a nut loosening prevention device according to an embodiment of the present invention.
- It is a perspective view showing a structure as viewed from the rear
- FIG. 6 is a perspective view showing a structure in which a nut loosening prevention device according to an embodiment of the present invention is assembled
- the nut loosening prevention device in order to maintain the nut 20 in a fastened state to the bolt 10, includes a spring 100 and a cap at the rear of the nut 20.
- a nut loosening prevention device including the member 200 and the leaf spring 300 is installed to prevent the nut 20 from rotating in the loosening direction.
- the bolt 10 is composed of a cylindrical body in which threads are formed along an outer circumferential surface, and a head formed to have a diameter larger than the diameter of the body.
- the body is passed through a fastening hole formed in the fastening object, and the head is pushed until it is caught without passing through the fastening hole, and then the nut 20 is screwed on the outer circumferential surface of the body protruding to the opposite side through the fastening hole. Tighten by screwing in.
- a screw thread having a constant pitch is formed in a spiral shape on the outer circumferential surface of the body of the bolt 10 so as to be mutually fastened with a thread formed on the inner circumferential surface of the nut 20.
- the nut 20 is fastened to the outer circumferential surface of the body of the bolt 10 that passes through the fastening hole and protrudes to the opposite side to fix the fastening target by pressing the fastening target.
- the outer circumferential surface of the nut 20 has a polygonal structure such as a hexagonal shape and is firmly fastened to the body of the bolt 10 by rotating it using a tool such as a spanner.
- the plate surface is formed to be bent, the insertion hole 310 is provided through the plate spring 300; has.
- the spring 100 has a free end 110 formed to have a diameter larger than the diameter of the bolt 10 body thread at one end, but has a fixed end 120 bent outward at the other end. do.
- the pitch of the free end 110 is preferably different from the pitch of the bolt 10 body thread.
- the free end 110 is a portion that is not fixed during the installation process of the nut loosening prevention device according to the present invention, and the free end 110 formed at one end of the spring 100 is the position of the fixed end 120 This is to allow fine adjustment of
- the spring 100 Due to the presence of the free end 110, the spring 100 is sufficiently rotated along the thread of the bolt 10 body so that the free end 110 is in close contact with the upper surface of the nut 20, Since it is possible to slightly loosen the spring 100 by rotating the spring 100 by a predetermined amount or to the extent that the nut 20 is sufficiently fixed, the axial direction of the bolt 10 or the nut ( The position of the fixed end 120 can be finely adjusted based on the rotation direction of 20).
- the inner diameter of the body excluding the free end 110 of the spring 100 is formed to be finely smaller than the diameter of the screw thread formed on the outer diameter of the bolt 10, and is widened as the spring 100 is fastened to the screw thread. It generates tension while losing.
- the spring 100 is fixed to the bolt 10 by this tension.
- the spring 100 may be formed of a compression coil spring as shown in FIG. 3A, but as shown in FIG. 3B, the upper part is composed of a tension coil 101 spring, and the lower part is composed of a compression coil 102 spring. You may.
- the spring 100 is released by holding the free end 110 of the spring 100 and turning it in a direction opposite to the fastening of the nut 20.
- the cap member 200 includes an opening surface 210 formed by cutting one side of the outer surface toward the other side of a portion into which the nut 20 and the spring 100 are inserted; And a mounting groove 220 recessed by a predetermined depth from the opening surface.
- the spring 100 is rotated so that the free end 110 is in close contact with the upper surface of the nut 20.
- the fixing end 120 is located in the center of any one of the hexagonal surfaces of the nut 20.
- the fixed end 120 is inserted into the insertion hole 310 to be fastened.
- the plate spring 300 is bent to form a predetermined angle in the direction of the bolt 10 body, so that the fixing end 120 is inserted into the insertion hole 310 and pressed.
- the spring 100 may be rotated finely to adjust the position of the fixed end 120 to match.
- the spring 100 is a member formed in a coil shape by winding a linear metal in a spiral shape to form a constant height, and the diameter thereof to be inserted into a thread formed on the outer surface of the bolt 10 It should be designed to have an appropriate diameter in consideration of the thread pitch and height of the bolt 10 so that it is possible.
- the inner diameter of the spring 100 is formed so that the screw thread of the bolt 10 is smaller than the groove, so that when the spring 100 is fastened to the screw thread, the diameter of the spring 100 corresponds to the diameter of the bolt 100 It stretches and causes tension.
- the spring 100 has a free end 110 at one end and a fixed end 120 at the other end.
- the free end 110 is formed to have a relatively larger diameter than other regions, so that the nut 20 ), and the area excluding the free end 110 is formed to have a relatively smaller diameter than the free end 110 so as to wrap the thread of the bolt 10 body, and the fixed end 120 is formed at the end. To be equipped.
- the fixed end 120 protruding to the outside of the spring 100 for a certain length is inserted into the insertion hole 310 formed in the plate spring 300 to be described later, so that the spring 100 is wound around the thread of the bolt 10 body.
- the nut 20 is prevented from loosening from the bolt 10 by keeping the free end 110 in contact with the upper surface of the nut 20 by being fixed.
- the inner diameter of the spring 100 is fixed to the body of the bolt 10 only by a widening tension.
- the free end 110 is configured as a compression coil 102 spring in the direction of the compression coil 102 and the tension coil 101 spring toward the fixed end 120, the inner diameter is In addition to the unfolding tension, the gap between the pitches of the springs 100 is widened at the tensioning portion, and since the tensioning pressure is generated, it can be fixed more strongly.
- connection portion 130 of the area excluding the free end 110 and the free end 110 is bent downwardly inclined at a predetermined angle so that the free end 110 is spaced apart from the area except the free end 110 by a certain distance. It is effective.
- the fixing end 120 of the spring 100 is located in the center of any one of the hexagonal surfaces of the nut 20, which is fixed in the insertion hole 310 of the plate spring 300 ( 120) is to be easily inserted and fixed.
- the spring 100 When holding the fixed end 120 of the spring 100 and rotating it in the direction of the thread, the spring 100 is not released by applying a tension that is further wound on the thread of the bolt 10, and on the contrary, holding the free end 110 When rotating in the opposite direction of the spring 100 is released.
- the cap member 200 is inserted into the outer surface of the nut 10 and the spring 100 so that the nut 20 and the spring 100 are embedded, the outer surface so that the fixed end 120 of the spring 100 is exposed to the outside.
- One side is cut to form an opening surface 210, and a mounting groove 220 is formed in the lower surface of the opening surface 210.
- the cap member 200 is a member whose lower surface is formed to be open and the upper part is curved in a dome shape, and the plate spring 300 is inserted by allowing the fixed end 120 to be exposed to the outside through the opening surface 210 formed incision at one side.
- the fixed end 120 can be easily inserted into the ball 310.
- the mounting groove 220 provided in the cap member 200 is formed deeply to adjust the depth into which the plate spring 300 is inserted, so that the fixing end 120 can be easily inserted into the insertion hole 310 It is effective to cope with the errors or separations that may occur for each product.
- a through hole 230 is formed through the central region of the upper surface of the cap member 200 so that the end of the bolt 10 can pass, so that even if the length of the bolt 10 fastened to the fastening object is formed somewhat longer, the bolt ( It is effective to allow the cap member 200 to be installed at the rear of the nut 20 regardless of the length of 10).
- the lower inner surface of the cap member 200 is formed in a polygonal shape corresponding to the outer surface of the nut 20 so that the cap member 200 is inserted into the outer surface of the nut 20 without gap, so that the cap member 200 It is desirable not to flow.
- the leaf spring 300 has one end inserted into the mounting groove 220 of the cap member 200 and fixed, and the other end has an insertion hole 310 that allows the fixing end 120 of the spring 100 to be inserted and fixed. It is a member in which the plate surface is bent.
- the plate spring 300 When the plate spring 300 is inserted into the mounting groove 220 of the cap member 200, the plate spring 300 has a multistage plate surface so that the cover member 400, which will be described later, is pressed into the inside of the cap member 200. It is preferable to be formed by bending.
- the thickness of the plate spring 300 is formed to have a thickness similar to the thickness of the mounting groove 220 formed in the cap member 200, so that when the plate spring 300 is inserted into the mounting groove 220, flow along the thickness direction It is effective to prevent it from occurring.
- the leaf spring 300 in order to insert the leaf spring 300 into the mounting groove 220 of the cap member 200, the leaf spring 300 needs to be slightly lifted, but the cover member 400 is further provided to facilitate this operation.
- a cover member 400 is preferably formed by an insert injection method integrated with the plate spring 300.
- One surface of the cover member 400 may be formed by being depressed or perforated with a recognition groove 410 capable of determining a position into which the fixing end 120 of the spring 100 is inserted.
- the recognition groove 410 is preferably provided at a position corresponding to the insertion hole 310 formed in the leaf spring 300.
- the spring 100 is fastened to the outer surface of the bolt 10 at the rear of the nut 20 by fastening the spring 100 to the screw thread formed on the bolt 10 and rotating it in the screw thread direction. Make it possible.
- the cap member 200 is inserted into the bolt 10 and the nut 20 so that the outer surface of the nut 20 is embedded in the lower surface of the cap member 200, and the opening surface 210 of the cap member 200 Through this, the fixed end 110 of the spring 100 is exposed to the outside, and the spring 100 is rotated so that it is disposed in a position parallel to any one side of the nut 20 to finely adjust.
- the leaf spring 300 is slightly opened in a direction opposite to the center of the nut 20, and the spring 100
- the fixed end 110 is inserted into the insertion hole 310 of the plate spring 300 so that the fixed end 110 is fixed.
- the spring 100 restrains itself by tension at a predetermined position after being fastened to the bolt 10. Since the cap member 200 constrains the nut 20 and the plate spring 300 is inserted into the mounting groove 220 and then fastened to the fixed end 120 to constrain the cap member 200, the nut 20 ) Cannot be rotated in the loosening direction from the bolt (10) body thread.
- the nut loosening prevention device according to the present invention is installed.
- the fixing end 110 of the spring 100 is in a state in which the end of the leaf spring 300 is inserted into the mounting groove 210. Since the fixing end 110 is fixed by being inserted into the insertion hole 310 of the leaf spring 300, the movement of the spring 100 is restricted, and the spring 100 is fixed to the outer surface of the bolt 10 Since (20) cannot be rotated in the loosening direction, the state in which the nut 20 is fastened to the bolt 10 is firmly maintained.
- the method for separating the nut loosening prevention device according to the present invention is to separate the leaf spring 300 from the cap member 200 in the reverse order of the above-described process, and remove the cap member 200 from the outer surface of the bolt 10, and then the spring ( 100) is separated from the outer surface of the bolt 10.
- connection part 130 of the spring 100 with a tool such as a finger or a long nose and slightly open it outward and rotate it in the opposite direction of the thread. (100) is to be separated from the outer surface of the bolt (10).
- the nut loosening prevention device can be used for fastening of a frame structure of a pier or bridge, soundproof tunnel, and soundproof wall accompanied by vibration as well as railway rails.
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- General Engineering & Computer Science (AREA)
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Abstract
Description
Claims (7)
- 볼트(10)의 몸체 외주면에 형성된 나사산에 체결되는 너트(20)의 풀림을 방지하는 너트 풀림방지 장치에 있어서,상기 볼트(10) 몸체의 나사산을 따라 회전하는 스프링(100);상기 너트(20) 및 상기 스프링(100)을 덮는 캡부재(200); 및상기 캡부재(300)에 체결되는 판 스프링(300);을 구비하되,상기 스프링(100)은 일측 단부에 상기 볼트(10) 몸체 나사산의 직경보다 큰 직경을 갖는 자유단(110)을 가지며,상기 스프링(100)을 상기 볼트(10) 몸체의 나사산을 따라 회전시킨 후, 상기 판스프링(300)을 상기 스프링(100)에 체결함으로써 설치되는 너트 풀림방지 장치.
- 제1항에 있어서,상기 스프링(100)은 타측 단부에 외측 방향으로 절곡 형성된 고정단(120);을 더 구비하며,상기 판스프링(300)은 상기 스프링의 고정단(120)에 결합되는 삽입공(310)을 구비하되,상기 삽입공(310)에 상기 고정단(120)을 끼움으로써 상기 스프링(100)을 고정하는 너트 풀림방지 장치.
- 제2항에 있어서,상기 캡부재(200)는 상기 너트(20) 및 상기 스프링(100)이 삽입되는 부위의 타측으로 상기 외면 일측이 절개되어 형성된 개구면(210); 및 상기 개구면으로부터 소정 깊이 함몰 형성되며 상기 판스프링(300)이 삽입되는 실장홈(220);을 구비하는 너트 풀림방지 장치.
- 제2항에 있어서,상기 너트(20)를 상기 볼트(10)에 잠근 후, 상기 스프링(100)을 회전시켜 상기 너트(20)의 일면에 상기 자유단(110)을 밀착시키되, 상기 삽입공(310)으로 상기 고정단(120)을 끼움으로써 설치되는 너트 풀림방지 장치.
- 제2항에 있어서,상기 판스프링(300)의 판면은 다단으로 절곡 형성되어, 상기 실장홈(220)에 삽입된 상태에서 내측방향으로 가압하는 너트 풀림방지 장치.
- 제1항에 있어서,상기 자유단(110)과 상기 자유단(110)을 제외한 영역의 연결 부위(130)는 소정 각도 사선 방향으로 하향 경사지게 절곡 형성된 너트 풀림방지 장치.
- 제1항에 있어서,상기 캡부재(200)의 개구면(210)을 덮는 별도의 커버부재(400);를 더 구비하되,상기 커버부재(400)와 상기 판스프링(300)은 인서트 사출 방식에 의하여 일체로 형성된 너트 풀림방지 장치.
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KR10-2019-0043889 | 2019-04-15 | ||
KR1020190043889A KR102087632B1 (ko) | 2019-04-15 | 2019-04-15 | 너트 풀림방지 장치 |
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CN111618136B (zh) * | 2020-06-22 | 2024-07-16 | 太仓恒华金属制品有限公司 | 折弯机导轨板固定装置 |
CN114719101A (zh) * | 2022-03-25 | 2022-07-08 | 保定天威保变电气股份有限公司 | 一种多孔径管接头 |
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KR20170085748A (ko) * | 2016-01-15 | 2017-07-25 | 김성순 | 플랜지의 결합부재용 풀림 확인 장치 |
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US20100028103A1 (en) * | 2006-12-26 | 2010-02-04 | Masamichi Soeda | Fall-off preventing element |
KR101163668B1 (ko) | 2012-01-10 | 2012-07-11 | (주)명성화학 | 볼트와 너트의 풀림 방지용 환봉 연결구 |
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2019
- 2019-04-15 KR KR1020190043889A patent/KR102087632B1/ko active IP Right Grant
- 2019-04-19 WO PCT/KR2019/004766 patent/WO2020213774A1/ko active Application Filing
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JPH06179301A (ja) * | 1992-12-15 | 1994-06-28 | Kanai Hiroyuki | ホイールナット用キャップ |
US5810532A (en) * | 1997-05-09 | 1998-09-22 | Grand General Accessories Manufacturing Inc. | Vehicle lug nut covers |
JP2004100952A (ja) * | 2002-08-20 | 2004-04-02 | Chuo Hatsujo Kogyo Kk | ボルト・ナットの緩み止め具及びボルトの締結具 |
KR200390235Y1 (ko) * | 2005-02-15 | 2005-07-25 | 성삼표 | 잠금형 볼트, 너트 |
KR20170085748A (ko) * | 2016-01-15 | 2017-07-25 | 김성순 | 플랜지의 결합부재용 풀림 확인 장치 |
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