Axial force controlling nut assembly

An axial force, nut technology, applied in the direction of threaded fasteners, screws, connecting components, etc., can solve problems such as difficulties

Inactive Publication Date: 2008-01-02
TOPY INDUSTRIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the amount of deformation of the elastic body is continuous and small, when the tightening torque is increased, it must be skilled and difficult to find the time point when the increased bolt axial force just reaches the appropriate bolt axial force

Method used

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  • Axial force controlling nut assembly
  • Axial force controlling nut assembly
  • Axial force controlling nut assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] (Example 1)-Figure 1, Figure 18

[0101] In Embodiment 1 of the present invention, as shown in FIGS. 1 and 18, the ring assembly 13 of the axial force management nut assembly 10 has the first axial force in the order from the seat member 11 to the tightening nut 12 The management ring 20, the elastic deformation ring 21 and the axial force transmission ring 22. The first axial force management ring 20 applies an appropriate bolt axis to the bolt 3 between the stepped portion (step-like retreat portion) 11a of the outer peripheral portion of the seat member 11 and the tapered portion 21c of the outer peripheral portion of the elastic deformation ring 21 The stage before the force is installed freely to rotate. The axial force transmission ring 22 and the elastically deformable ring 21 are in contact with each other at the outer peripheral part of the two rings, and there is a gap in the inner peripheral part of the two rings.

[0102] The ring assembly 13 does not have an ex...

Embodiment 2

[0108] (Example 2)-Figure 2, Figure 18

[0109] The embodiment 2 of the present invention is an embodiment in which the groove 20a as the excess axial force detection structure A is added to the embodiment 1 of the present invention.

[0110] In the second embodiment of the present invention, as shown in FIGS. 2 and 18, the ring assembly 13 of the axial force management nut assembly 10 has a first axial force management ring in the order from the seat member 11 to the tightening nut 12 20. Elastic deformation ring 21 and axial force transmission ring 22. The first axial force management ring 20, in the space between the stepped portion (stepped retreat portion) 11a of the outer peripheral portion of the seat member 11 and the tapered portion 21c of the outer peripheral portion of the elastically deformable ring 21, apply an appropriate bolt in the axial direction The stage before the force is installed with free rotation. The axial force transmission ring 22 and the elastically de...

Embodiment 3

[0119] (Example 3)-Figure 3, Figure 18

[0120] The third embodiment of the present invention is an embodiment in which the second axial force management ring 23 as the excess axial force detection structure A is added to the first embodiment of the present invention.

[0121] In the third embodiment of the present invention, as shown in FIGS. 3 and 18, the ring assembly 13 of the axial force management nut assembly 10 has a first axial force management ring in the order from the seat member 11 to the tightening nut 12 20. Elastic deformation ring 21 and axial force transmission ring 22. The axial force transmission ring 22 and the elastically deformable ring 21 are in contact at the outer circumference of the two rings, and there is a gap in the inner circumference of the two rings.

[0122] The ring assembly 13 of the axial force management nut assembly 10 also includes: rotating before the bolt axial force becomes an excess axial force larger than the appropriate axial force, a...

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PUM

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Abstract

An axial force control nut assembly 10 includes a seat member 11, a fastening nut 12 rotatable relative to the seat member and a ring assembly 13 disposed between the seat member and the fastening nut. The ring assembly 13 can include one or more rings. At least one of the rings is an axial force control ring 20 is freely rotatable before a bolt axial force reaches the proper axial force and is restricted in rotation after the bolt axial force is equal to or greater than proper axial force. Alternatively or in addition, the ring assembly 13 can include an elastic deformation ring 21. A gap is defined between a radially outer portion of the elastic deformation ring 21 and the seat member 11 before the bolt axial force reaches the proper axial force. The gap between the radially outer portion of the elastic deformation ring 21 and the seat member 11 becomes zero after the bolt axial force is equal to or greater than the proper axial force.

Description

Technical field [0001] The present invention relates to a nut assembly (hereinafter referred to as an axial force management nut assembly) capable of managing the axial force of a bolt with axial force instead of torque. Background technique [0002] In vehicles including trucks, buses, etc., as disclosed in Japanese Patent Laid-Open No. 11-351225, or in the case of installation of a spherical seat in FIG. 19, or in the case of installation of a flat seat in FIG. 20, the wheels (For example, a disc wheel) 1 is fixed to the hub 2 of the vehicle by a hub bolt 3 and a hub nut 9. [0003] The conventional nuts have the following problems. [0004] (1) Because the spherical surface of the tightening nut is in direct contact with the product (for example, a disc wheel), when a torque is applied to tighten the nut, because the nut rotates while contacting the product, it will Friction on the surface. [0005] Due to the friction of the contact surface, the correct conversion of torque t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B31/02
Inventor 丸山三郎木村嘉昌宫下悟儿玉庄一郎
Owner TOPY INDUSTRIES
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