WO2005024252A1 - 緩み止めボルト装置 - Google Patents
緩み止めボルト装置 Download PDFInfo
- Publication number
- WO2005024252A1 WO2005024252A1 PCT/JP2003/011168 JP0311168W WO2005024252A1 WO 2005024252 A1 WO2005024252 A1 WO 2005024252A1 JP 0311168 W JP0311168 W JP 0311168W WO 2005024252 A1 WO2005024252 A1 WO 2005024252A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- set screw
- screw
- concave portion
- peripheral surface
- bolt device
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims description 5
- 238000010008 shearing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 13
- 239000004677 Nylon Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
- F16B39/126—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts causing radial forces on the bolt-shaft
- F16B39/128—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts causing radial forces on the bolt-shaft by means of eccentrical or spiral interengaging parts
-
- 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
- F16B35/005—Set screws; Locking means therefor
-
- 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
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
- F16D1/0847—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to a radial screw
-
- 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
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
- F16B2/065—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using screw-thread elements
Definitions
- the present invention relates to a locking bolt device that can be suitably used as a shaft fixing tool having a locking function for fixing a rotating component such as a flywheel, a disk-shaped component, or the like to a shaft.
- a flywheel in order to fix a flywheel to a shaft, a flywheel is formed with a through hole of the shaft, and a fixing screw hole is formed through the inner surface of the through hole to an outer surface of the flywheel.
- a set screw having an outer thread formed on the outer peripheral surface is screwed into the shaft until it is pressed against the shaft.
- the present invention can be used repeatedly, and can be easily screwed into a screw hole at the initial stage.
- the main object of the present invention is to provide a locking port device which can be securely locked by automatically applying stress in the cutting direction at the time of final tightening.
- a set screw having an outer thread formed on an outer peripheral surface thereof, and an outer screw having the same pitch as the outer screw of the set screw are formed on the outer peripheral surface, and an axially proximal end portion of the set screw is formed in an axial direction.
- a lock port to which a distal end portion is connected wherein one of the axial base end portion of the set screw and the axial distal end portion of the lock bolt is provided with a conical convex portion, and the other is provided with the conical convex portion.
- a locking bolt device comprising a first concave portion into which the convex portion is fitted, wherein an outer peripheral surface of the convex portion and an inner peripheral surface of the first concave portion are slightly eccentric.
- one of the convex portion and the first concave portion may be eccentric with respect to the external screw, and the other may be concentric.
- both may be eccentric with respect to the outer screw, and in this case, it is sufficient that the convex portion and the first concave portion are relatively eccentric.
- an engaging portion with which the rotary tool is engaged is formed on the set screw.
- the engaging portion is a second concave portion formed in the distal end surface or the proximal end surface in the axial direction, and is more preferably a hexagonal hole or a square hole into which a hexagon wrench or the like can be inserted. May be.
- the first recess may be provided at an axial base end of the set screw, and in this case, the second recess may be provided at an axially deep portion of the first recess.
- a third concave portion with which the rotating tool is engaged can be formed in the base end face in the axial direction of the lock bolt.
- the third recess may be a hexagonal hole or a square hole into which a hexagon wrench or the like can be fitted and inserted.
- the maximum diameter of the set screw may be the outer diameter of the outer screw.
- the maximum diameter of the lock bolt may be the outer diameter of the outer screw.
- the ratio of the maximum diameter of the protrusion to the outer diameter of the outer screw is 0.5 to 0.6. If this ratio is smaller than 0.5, the wedge effect due to the eccentricity of the projection and the recess is too close to the axis, and the loosening effect is sufficient due to the tolerance of the external thread and the projection. You can't expect it. On the other hand, if it exceeds 0.6, it becomes impossible to secure a sufficient thickness around the first concave portion.
- the present invention includes a set screw screwed into the screw hole, and a lock member inserted into the screw hole deeper than the set screw, and an upper surface of the lock member or a lower surface of a tip lower surface of the set screw.
- Either one is provided with a conical convex portion, and the other is provided with a concave portion into which the convex portion is fitted, and the outer peripheral surface of the convex portion and the inner peripheral surface of the first concave portion are minute.
- This is a locking bolt device characterized by being eccentric.
- FIG. 1 is a partially sectional exploded front view of a locking bolt device according to a first embodiment of the present invention.
- FIG. 2 is a partial cross-sectional front view of the device when tightening is completed.
- FIG. 3 is an enlarged sectional view of a main part of FIG.
- FIG. 4 is an enlarged view of the fixing member used in the embodiment, wherein (a) is a plan view and (b) is a front view.
- FIG. 5 is a cross-sectional view showing an example of use of a locking bolt device according to another embodiment.
- FIGS. 1 to 4 show a shaft fixing device which is a locking bolt device according to a first embodiment of the present invention.
- the shaft fixing device has a lock bolt 1 having an external thread formed on an outer peripheral surface.
- a set screw 2 In the illustrated embodiment, the lock bolt 1 and the set screw 2 have the same structure. However, the lock bolt 1 and the set screw 2 may have different structures. For example, the protrusion 3 is not required for the set screw 2.
- a conical and trapezoidal projection 3 eccentric to the axis X of the external thread is formed at the tip end in the axial direction of the lock bolt 1.
- FIG. 4 shows the axis Y of the projection 3.
- An engagement recess 4 (third recess) is formed in the base end face in the axial direction of the lock bolt 1 for engaging a wrench or the like as a rotary tool.
- the engagement concave portion 5 (the 1 2) are formed. As shown in FIG. 4, the concave portion 5 is formed in a substantially rectangular shape in plan view. The upper end edge of the concave portion 5 is formed on a tapered surface 5a which is inclined radially outward in accordance with the upper end side, and the tapered surface 5a has a partial force S and a first engaging portion 3 which engages with the convex portion 3 of the lock bolt 1. Are formed as recesses 6. With such a configuration, the engagement concave portion 5 is provided in the deep portion of the concave portion 6.
- the first recess 6 is concentric with the outer screw of the set screw 2. That is, the center of the inscribed circle of the tapered surface 5a and the center of the external thread are configured to be aligned with each other, whereby the convex portion 3 of the mouthpiece 1 and the set screw 2 facing this are formed.
- the recess 6 is formed with a relatively small eccentricity.
- the diameter (minimum diameter) of the tip of the convex portion 3 is smaller than the diameter of the inscribed circle of the concave portion 6, and the diameter (maximum diameter) of the base end of the convex portion 3 is The diameter is larger than the diameter of the inscribed circle of the concave portion 6, and is configured so that the wedge effect can be exhibited by the engagement between the convex portion 3 and the concave portion 6.
- the shaft fixing device of this embodiment is used for fixing a disk-shaped member F such as a flywheel to a shaft S as shown in FIGS.
- the disc-shaped member F has a through hole 10 for the shaft S, and the shaft S is fitted into the hole 10.
- the member F has a screw hole 11 penetrating through the inner surface of the through hole 10 and the outer peripheral surface of the member F.
- the set screw 2 and the lock bonole 1 of this embodiment are screwed so as to be embedded in the screw holes 11.
- a key 12 for preventing rotation of the member F with respect to the shaft S may be provided on the shaft S, and a key groove (not shown) engaging with the key 12 may be provided on the member F.
- the member F is fitted to the shaft S, and then the set screw 2 is screwed into the screw hole 11. Then, after the lower end surface of the set screw 2 comes into contact with the peripheral surface of the shaft S, the set screw 2 is rotated with a predetermined torque, and the member F is fastened and fixed to the shaft S using the screw 2.
- the lock bolt may be provided with a concave portion and the set screw may be provided with a convex portion.
- the convex portion 3 is eccentric, but the concave portion 6 may be slightly eccentric with respect to the outer screw.
- FIG. 5 shows a mounting structure of a detector on a railway track as an example of use of the locking bolt device according to the other two embodiments of the present invention.
- a plate member 21 is fastened and fixed to a lower portion of the track rail 20 by a fastening jig 25, and the locking device according to the second embodiment is used for this fastening.
- a detector mounting bracket 22 is fastened to an end of the plate member 21 by a locking bolt device according to the third embodiment.
- the same components as those in the first embodiment are denoted by the same reference numerals, detailed description thereof will be omitted, and different configurations and operational effects will be described. .
- both the set screw 2 and the lock bolt 1 include the bolt heads la and 2a.
- the bolt heads la and 2a have a circular outer peripheral surface and have hexagonal holes 23 and 24 for fitting a hexagonal wrench on the top surface.
- the projection 3 is provided at the tip of the set screw 2
- the first recess 6 is provided at the tip of the lock bolt 1.
- the set screw 2 is provided with a bolt head 2a.
- the convex portion 3 is provided at the distal end of the set screw 2, and the first concave portion 6 is provided at the base end surface of the lock bolt 1.
- the lock bonole 1 is provided with a third recess 4 in the shape of a hexagonal hole in the axially deep portion of the first recess 6. To fasten this locking bolt device, first, lock bolt 1 is screwed into the screw hole to a predetermined depth using a hexagon wrench or the like, and then screw 2 is screwed into the screw hole.
- a strong locking effect is obtained by a wedge effect.
- the representative embodiments of the present invention have been described.
- the present invention is not necessarily limited to the structures of the examples, and can be implemented with appropriate modifications.
- a through hole may be provided in the center of the shaft for the set screw and the lock bolt, and the first to third concave portions may be provided in a part of the through hole in the axial direction.
- a similar loosening prevention effect can be obtained by providing a lock member having no screw on the peripheral surface instead of the lock bolt.
- the lock member has a columnar shape or a cylindrical shape, and its outer diameter is substantially equal to or slightly smaller than the inner diameter of the screw hole.
- the other configuration is the same as that of the lock bolt, and the protrusion 3 and the first and second recesses can be provided.
- initial screwing into the screw hole is easy, and horizontal and vertical stresses are automatically applied at the time of final tightening to exert a strong locking effect. It can reliably prevent bolts from loosening, and can be maintenance-free even when used to fix shafts that are used continuously over a long period of time, such as flywheels. be able to. Moreover, there is a remarkable effect that the set screw can be used repeatedly because there is no damage to the outer screw.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Surgical Instruments (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/570,019 US20070269286A1 (en) | 2003-09-01 | 2003-09-01 | Anti-Loosening Bolt Assembly |
CNA038270080A CN1826475A (zh) | 2003-09-01 | 2003-09-01 | 防松螺栓组件 |
EP03818553A EP1666742A4 (en) | 2003-09-01 | 2003-09-01 | LOCKING BOLT DEVICE |
AU2003271052A AU2003271052A1 (en) | 2003-09-01 | 2003-09-01 | Lock bolt device |
PCT/JP2003/011168 WO2005024252A1 (ja) | 2003-09-01 | 2003-09-01 | 緩み止めボルト装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/011168 WO2005024252A1 (ja) | 2003-09-01 | 2003-09-01 | 緩み止めボルト装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005024252A1 true WO2005024252A1 (ja) | 2005-03-17 |
Family
ID=34260107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/011168 WO2005024252A1 (ja) | 2003-09-01 | 2003-09-01 | 緩み止めボルト装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070269286A1 (ja) |
EP (1) | EP1666742A4 (ja) |
CN (1) | CN1826475A (ja) |
AU (1) | AU2003271052A1 (ja) |
WO (1) | WO2005024252A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014141881A (ja) * | 2014-05-14 | 2014-08-07 | License & Property Control:Kk | 地下構造物用筐体 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102606606A (zh) * | 2011-02-22 | 2012-07-25 | 汪砚秋 | 反扣防松螺栓 |
JP2013257019A (ja) * | 2012-06-14 | 2013-12-26 | Nihon Medi Physics Co Ltd | 貫通穴付き止めねじ |
CN105201986B (zh) * | 2015-10-29 | 2017-09-19 | 河南航天精工制造有限公司 | 一种防松螺栓组件及其防松螺栓和防松螺母 |
CN110307232B (zh) * | 2019-07-03 | 2023-06-16 | 浙江启冠精工机械股份有限公司 | 一种防止松动的螺丝 |
JP6762591B1 (ja) * | 2019-12-20 | 2020-09-30 | ハードロック工業株式会社 | 緩み止め装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1037936A (ja) * | 1996-07-22 | 1998-02-13 | Hard Lock Kogyo Kk | 緩み止めボルト |
JP2001050292A (ja) * | 1999-08-02 | 2001-02-23 | Hard Lock Kogyo Kk | 緩み止め機能を備えた軸固定具 |
JP2003120633A (ja) * | 2001-10-11 | 2003-04-23 | Nuclear Fuel Ind Ltd | 止めねじ用の緩み防止ねじ |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2620996A1 (de) * | 1976-05-12 | 1977-11-17 | Zenji Tuchikawa | Verriegelungsmutter |
JPS57184308U (ja) * | 1981-05-19 | 1982-11-22 | ||
JP4495849B2 (ja) * | 2000-10-18 | 2010-07-07 | ハードロック工業株式会社 | 緩み止めナット |
-
2003
- 2003-09-01 AU AU2003271052A patent/AU2003271052A1/en not_active Abandoned
- 2003-09-01 EP EP03818553A patent/EP1666742A4/en not_active Withdrawn
- 2003-09-01 US US10/570,019 patent/US20070269286A1/en not_active Abandoned
- 2003-09-01 CN CNA038270080A patent/CN1826475A/zh active Pending
- 2003-09-01 WO PCT/JP2003/011168 patent/WO2005024252A1/ja not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1037936A (ja) * | 1996-07-22 | 1998-02-13 | Hard Lock Kogyo Kk | 緩み止めボルト |
JP2001050292A (ja) * | 1999-08-02 | 2001-02-23 | Hard Lock Kogyo Kk | 緩み止め機能を備えた軸固定具 |
JP2003120633A (ja) * | 2001-10-11 | 2003-04-23 | Nuclear Fuel Ind Ltd | 止めねじ用の緩み防止ねじ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1666742A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014141881A (ja) * | 2014-05-14 | 2014-08-07 | License & Property Control:Kk | 地下構造物用筐体 |
Also Published As
Publication number | Publication date |
---|---|
CN1826475A (zh) | 2006-08-30 |
EP1666742A4 (en) | 2006-11-08 |
US20070269286A1 (en) | 2007-11-22 |
EP1666742A1 (en) | 2006-06-07 |
AU2003271052A1 (en) | 2005-03-29 |
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