Fastener capable of preventing automatic rolling movement in loosening direction

A fastener, automatic technology, applied in the direction of threaded fasteners, locking fasteners, connecting components, etc., can solve the problem that it is difficult to control the clamping force of the workpiece

Pending Publication Date: 2021-05-18
许松林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical scheme of "Double Nut Threaded Connection to Prevent Automatic Rolling Movement in the Loosening Direction" with the notification number CN208252561U designed by the inventor has the following disadvantages: at the same time, the connection between the upper flank of the internal thread of the second nut and the lower flank of the external thread of the bolt is realized. The structure of mutual contact between the lower flank of the internal thread of the first nut and the upper flank of the outer thread of the

Method used

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  • Fastener capable of preventing automatic rolling movement in loosening direction
  • Fastener capable of preventing automatic rolling movement in loosening direction
  • Fastener capable of preventing automatic rolling movement in loosening direction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Such asfigure 1 ,figure 2 ,Figure 5 ,Figure 6,Figure 7 As shown, the fastener for automatically rolling motion in the loose direction, including bolts 1, first nut 2, washer 3, and second nut 4, the center of the gasket 3 is provided with a screw for the bolt 1. No closed through hole 5, the perimeter of the through hole 5 is smaller than the outer thread peripheral length of the bolt 1, the pore size of the through hole 5 is larger than the outer thread of the bolt 1, the through hole 5 The height H is larger than the outer thread riser of the bolt 1, and the top of the gasket 3 is provided with a conical convex surface 6; one end of the second nut 4 is provided with a conical concave surface 7, and the angle θ of the tapered concave surface 7 is smaller than the first The internal thread angle α of the second nut 4 is β with the outer thread angle β of the bolt 1; the bolt 1, the first nut 2, the gasket 3, and the second nut 4 are mounted on the workpiece 8, the first nut 2 ...

Embodiment 2

[0051]Such asfigure 1 ,figure 2 ,Figure 5 ,Figure 6,Figure 8 As shown, the fastener for automatically rolling motion in the loose direction, including bolts 1, first nut 2, washer 3, and second nut 4, the center of the gasket 3 is provided with a screw for the bolt 1. No closed through hole 5, the perimeter of the through hole 5 is smaller than the outer thread peripheral length of the bolt 1, the pore size of the through hole 5 is larger than the outer thread of the bolt 1, the through hole 5 The height H is larger than the outer thread riser of the bolt 1, and the top of the gasket 3 is provided with a conical convex surface 6; one end of the second nut 4 is provided with a conical concave surface 7, and the angle θ of the tapered concave surface 7 is smaller than the first The internal thread angle α of the second nut 4 is β with the outer thread angle β of the bolt 1; the bolt 1, the first nut 2, the gasket 3, and the second nut 4 are mounted on the workpiece 8, the first nut 2 ...

Embodiment 3

[0059]Such asimage 3 ,Figure 4 ,Figure 5 ,Figure 6,Figure 7 As shown, the fastener for automatically rolling motion in the loose direction, including bolts 1, first nut 2, washer 3, and second nut 4, the center of the gasket 3 is provided with a screw for the bolt 1. The closed through hole 5, the pore size of the through hole 5 is larger than the outer thread of the bolt 1, and the height H of the through hole 5 is larger than the outer thread riser of the bolt 1, and the top of the gasket 3 is provided Conical convex surface 6; one end of the second nut 4 is provided with a conical concave surface 7, and the angle θ of the cone 7 is smaller than the internal thread angle α of the second nut 4 and the outer thread angle β of the bolt 1; The bolt 1, the first nut 2, the washer 3, and the second nut 4 are tightened on the workpiece 8, and the bottom of the first nut 2 is in contact with the workpiece 8; the bottom of the gasket 3 and the first The top of the nut 2 is in contact; afte...

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Abstract

The invention discloses a fastener capable of preventing automatic rolling movement in a loosening direction. The fastener comprises a bolt, a first nut, a gasket and a second nut, the center of the gasket is provided with a through hole for a screw rod of the bolt to pass through, and the top of the gasket is provided with a conical convex surface. A conical concave surface is arranged at one end of the second nut, and after the bolt, the first nut, the gasket and the second nut are mounted and screwed on a workpiece, the bottom of the first nut is in contact with the workpiece. The bottom of the gasket is in contact with the top of the first nut. After the gasket deforms, a contact structure without a transverse gap is formed between the conical convex surface and the conical concave surface, and a contact structure without a transverse gap is formed between a through hole and the external thread of the bolt. Therefore, during transverse vibration or impact, the first nut, the second nut and the bolt can be effectively prevented from continuously rolling in the loosening direction.

Description

Technical field[0001]The present invention relates to the field of fasteners, and more particularly to a fastener that prevents automatic rolling motion in the loose direction.Background technique[0002]Objectively, the inner screw and the outer screw are automatically rotated in the relative loose direction there in the relative loose direction (e.g., the internal threads will generate slider rotation in the opposite looming direction under the action of rotation inertia) and rolling movement. There are two ways without fixed-axis lateral rotation.[0003]Inventors "new cylindrical thread joint anti-loose principle and anti-loosening technology" [China New Technology New Products, 2015.10 (on)], theoretical analysis and experimental results have been proved "cylindrical threads in transverse vibration" The looseness generated in the environment in the environment is within, the unmatched axis transverse rotational motion (rolling motion) between the external ribs, and therefore, as lo...

Claims

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Application Information

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IPC IPC(8): F16B39/24F16B37/00
CPCF16B37/00F16B39/24
Inventor 许松林
Owner 许松林
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