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JP6479248B1 |
To provide a nut runner capable of accurately fastening a fastener with a target tightening force and easily automating. A tightening device has a tubular shape, a drive socket for holding the nut at an opening on the lower end side, and...
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JP6460555B2 |
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JP6458981B2 |
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JP6450839B2 |
A bolt includes a body and a detecting portion. The body includes a shank and a head provided at one end of the shank. The detecting portion is configured to detect a strain in accordance with an axial force of the shank. The detecting p...
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JP6439329B2 |
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JP2018536807A |
A member (1,2) having a thread (4,6), the thread having an increased play (δ) in the axial direction as compared with a standard thread, has a large prestress. It should be possible to turn the nut even with a given bolt and to allow a ...
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JP2018194096A |
To provide a spring washer which can accurately evaluate an axial force and a fastening state even after the lapse of a long period of time from fastening, and an evaluation method of the axial force and the fasten state using the spring...
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JP6433308B2 |
To provide a detection device which can suppress reduction in detection accuracy of an axial force.A detection device which detects an axial force of a bolt member having a head formed with a recess comprises: a bearing member at least a...
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JP2018535377A |
The indicator and the fastener and the assembly of the indicator have an inwardly extending engaging portion on the indicator for engaging the complementary portion on the fastener. The fastener may include an annular groove and the indi...
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JP6431358B2 |
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JP2018168740A |
To provide a fluid device capable of sufficiently preventing leakage of a fluid from between flanges.Respective flanges 61, 62 of halves 20, 30 provided on a casing 6 of a compressor 1 are fastened together using a plurality of bolts 70 ...
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JP2018150975A |
To provide a novel fastened state monitoring kit capable of monitoring a fastened state of a screw, and a fastened state monitoring method using the fastened state monitoring kit.On a screw N, fastened state monitoring kits (11, 12) incl...
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JP2018150976A |
To provide a novel fastener capable of monitoring a fastened state of the fastener, and a fastened state monitoring method using the fastener.As a fastener (first fastener 11 of this invention, second fastener 12 of this invention), the ...
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JP6391210B2 |
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JP6389680B2 |
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JP2018132092A |
To enable high fastening force to be kept even in a case where temperature change occurs, in a screw fastening structure.A thermal expansion/contraction absorption screw fastening mechanism 1 includes: a male screw side seat surface OZ c...
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JP2018123371A |
To provide a straightening-processed metal rod and a manufacturing method thereof, which is a material for bolts and the like having a compressive residual stress entirely and continuously and increased fatigue strength of the fastening ...
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JP6371672B2 |
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JP6363270B1 |
To provide a fastener which can be easily tightened and fixed with a predetermined axial force and can obtain a nut loosening prevention effect. A nut 2 to be screwed with a bolt 1 engages with a mounting hole 24 having a female threaded...
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JP2018112423A |
To accurately determine seating of screws.A tapping screw 3 having conductivity, and a printed board 4 fixed to a power module 2 by the seating of the tapping screw 3 are provided. A first seating electrode 51, a second seating electrode...
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JP2018105407A |
To prevent damage caused by unexpected removal of a nut mounted on a bolt from the bolt.A bolt 10 includes a first screw part 12a, a second screw part 12b, and a non-screw part 12c connecting between the first screw part 12a and the seco...
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JP6350553B2 |
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JP2018091361A |
To provide an end joining structure for an axial force member, which can prevent excessive reaction from being generated at a joint end even when an external force of unexpected magnitude is input.In a joining structure A for an end 2a (...
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JP6324405B2 |
A head of a bolt includes a deformed portion that has a smaller thickness in an axial direction of a shank or a smaller value of Young's modulus than other portion of the head, and that is configured to be deformed more than the other po...
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JP2018068029A |
To prevent damage to an annular waterproof member when integrating a plate member holding the annular waterproof member through a mounting screw.The waterproof mounting structure and method of a motor and a resolver is a structure and a ...
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JP6310559B2 |
The present invention relates to a sealing bolt (2) for sealing a container lid (4) to a container body (6). The sealing bolt (2) comprises a seal stud (10) mounted to the container body (6), a seal head (8) connecting the container lid ...
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JP6302328B2 |
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JP6276684B2 |
A fastener comprises a head, and a shank having an outer surface and an axially-extending channel in the outer surface. Optically transmissive, strain-sensitive fills the channel.
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JP2018017171A |
To stabilize axial force of a plurality of bolts.A fastening device 100 for fastening a first fastening member and a second fastening member in a state of holding a held member (bearing 22) therebetween, by engaging a first bolt 30a inse...
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JP6268406B2 |
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JP2018004070A |
To attain a hexagon bolt using a hexagon nut at a head part capable of making variation of fastening force in fastening small, even in a case of using a torque method using an elastic area of the hexagon bolt where axial force to elongat...
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JP2018006157A |
To provide a light emitting unit that emits high-visibility light.A light emitting unit comprises: a light source; a light guide body including an incident surface on which light from the light source is incident, and a light emitting su...
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JP6259203B2 |
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JP6254103B2 |
A high capacity radial-fit coupling bolt (or “expanding sleeve bolt”) has a pair of tapered sleeves about a shank of a bolt to which can be applied a tensioning load. An extrudable ring, or a compression ring, is interposed between a...
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JP2017223240A |
To inexpensively manage fastening torque.A joint 10 is equipped with a first joint portion 12; a second joint portion 14; and a spacer 16. The first joint portion 12 has a male screw portion 26 which is a tapered screw, and the second jo...
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JP6249655B2 |
The apparatus has a support tube (2) surrounding a screw thread end section (A) of a threaded bolt (3). Cylinders (1) are arranged in an extension of the tube and movable in a longitudinal direction (L). Pistons (5) are connectable with ...
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JP6247183B2 |
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JP6243750B2 |
Provided is a screw fastener provided with the function of a torque limiter which allows a high limit value to be set for the fastening torque without increasing the size thereof or the spring force of the spring member, and is easy to a...
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JP6231824B2 |
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JP2017201095A |
To enhance work efficiency by enabling processes for fixing an anchor on a lower hole of a ceiling slab and fitting a hanging bolt to hang down to be performed serially.An anchor installation method includes: a first step for fitting a b...
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JP6226344B1 |
[Subject] While enabling cheap manufacture by cold-forging and holding the conclusion power by high axial tension, The security nut which uses for raising an effect stop slackening, without discarding the hexagon head part made to fractu...
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JP6228203B2 |
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JP2017194118A |
To provide a screw fastener capable of carrying out secondary fastening with high accuracy by a simple structure.A head portion 14a of a bolt 14 and an abutting portion 16 of a collar 15 have stepped surfaces 14f and 15c transmitting rot...
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JP6220974B2 |
A fastening system including a fastener and a fastener installation tool. The fastener includes a pin member having an elongated shank portion with a threaded portion, a stop shoulder located at an end of the threaded portion, and a pull...
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JP2017190846A |
To provide a screw fastening tool capable of accurately secondary fastening with a simple structure.A screw fastening tool comprises: a first projection 15c provided on a collar 15; and a second projection 14f provided on a bow 14a of a ...
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JP6212371B2 |
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JP6192156B2 |
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JP6178671B2 |
A cylinder head bolt (8) inserted into a cylinder head (1) is threadingly engaged with an engine casing (2) comprised of a cylinder (3) and a crankcase (4) to tighten the cylinder head (1) and the engine casing (4) firmly together. Betwe...
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JP6166222B2 |
A flange fastening skill determination apparatus includes: a receiver configured to receive output signals that are outputted from respective tightening force detectors when a testee performs work of tightening a plurality of bolts that ...
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JP6151124B2 |
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