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Anti-loosening screw assembly and manufacturing process thereof

A technology for preventing screws and screw parts, applied in threaded fasteners, threaded products, screws, etc., can solve the problem of separation of screw parts and internal threaded parts, and achieve the effect of saving process costs

Active Publication Date: 2020-06-30
浙江吉达金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this solution has the following problems: In order to quickly tighten the screw to fix the wire after the wire is put into the screw assembly, the screw and the internal thread will be sold together, and only the end of the screw is screwed into the internal thread status
However, since there is only a small length of fit between the screw and the internal thread, it is easy to cause the screw to separate from the internal thread when relative rotation occurs between the screw and the internal thread.

Method used

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  • Anti-loosening screw assembly and manufacturing process thereof
  • Anti-loosening screw assembly and manufacturing process thereof
  • Anti-loosening screw assembly and manufacturing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 2 As shown, an anti-loosening screw assembly includes a screw part 1 and an internal thread part 2 that are threaded.

[0046] Such as figure 2 As shown, the internally threaded part 2 includes a ring part 4 formed by bending a steel plate multiple times, and the ring part 4 includes a first bent plate 5 , a second bent plate 6 and a third bent plate 7 connected in sequence. One end of the first bent plate 5 away from the second bent plate 6 is connected with an inner plate 8, and one end of the third bent plate 7 far away from the second bent plate 6 is connected with an outer plate 9, and the inner plate 8 and the outer plate are connected. The laminates 9 are stacked together in such a way that the inner laminate 8 faces inward and the outer laminate 9 faces outward to form a sealing ring. The outer side of the inner plate 8 is formed with a circular protrusion 10, and an M4*0.5 internal thread hole 11 is opened in the middle of the circular protru...

Embodiment 2

[0049]A manufacturing process for an anti-loosening screw assembly, comprising:

[0050] Step 1: Cold heading

[0051] Such as image 3 As shown, the blank 18 when the external thread 3 is not processed by the cold heading forming screw 1 is formed by cold heading.

[0052] Step 2: Rub your teeth

[0053] Rub the teeth on the surface of the blank 18 by the tooth rubbing machine, the thread rolling plate of the tooth rubbing machine has an installation groove, and the molded part for forming and destroying the teeth 17 while rubbing the teeth is installed in the installation groove. The bottom of the mounting groove is provided with a through hole through the thread rolling plate, and the formed part can be ejected through the metal rod through the through hole, so that the formed part can be replaced when the formed part is damaged.

[0054] Step 3: Shake the oil

[0055] The oil stain on the surface is cleaned by an oil thrower for subsequent processing steps.

[0056] S...

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Abstract

The invention discloses an anti-dropping screw assembly. The anti-dropping screw assembly has the advantage of capability of protecting a screw component and an internal threaded component from accidental separation. The anti-dropping screw assembly comprises the screw component and the internal threaded component which are in threaded connection, wherein the internal threaded component comprisesan annular component formed by bending a steel plate for multiple times; an internal threaded hole is formed in the annular component; an external thread matched with the internal threaded hole is formed on the outer side of the screw component; a destroyed thread is formed on a first intact thread on the end part of the external thread. Through arrangement of the destroyed thread on the end partof the external thread of the screw component, when the screw component rotates relative to the internal threaded component and till the destroyed thread at the top end of the external thread, the matching state of the screw component and the internal threaded component is locked, and at the moment, a relatively large acting force is required to be applied for separating the screw component from the internal threaded component, so that the top end of the screw component is unlikely to be separated from the internal threaded component.

Description

technical field [0001] The invention relates to the field of fasteners, in particular to an anti-loosening screw assembly and a manufacturing process thereof. Background technique [0002] Such as figure 1 As shown, a screw assembly includes a screw part 1 and an internal thread part 2. The screw part 1 is cylindrical and has external threads 3 formed on its outer surface. The external thread 3 of the screw part 1 cooperates with the internal thread part 2 to form a screw assembly for use. [0003] However, this solution has the following problems: In order to quickly tighten the screw to fix the wire after the wire is put into the screw assembly, the screw and the internal thread will be sold together, and only the end of the screw is screwed into the internal thread status. However, since there is only a short fit length between the screw and the internal thread, it is easy to cause the screw to separate from the internal thread when relative rotation occurs between the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B35/04F16B39/30B23P15/00B21H3/06
CPCB21H3/06B23P15/00F16B35/041F16B39/30
Inventor 闻金普
Owner 浙江吉达金属有限公司