GB2317915A - Improved assembly of a threaded fastener - Google Patents

Improved assembly of a threaded fastener Download PDF

Info

Publication number
GB2317915A
GB2317915A GB9618505A GB9618505A GB2317915A GB 2317915 A GB2317915 A GB 2317915A GB 9618505 A GB9618505 A GB 9618505A GB 9618505 A GB9618505 A GB 9618505A GB 2317915 A GB2317915 A GB 2317915A
Authority
GB
United Kingdom
Prior art keywords
slot
secondary component
threaded fastener
screw
component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9618505A
Other versions
GB9618505D0 (en
Inventor
Alastair Vaughan Ramsay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Newfrey LLC
Original Assignee
Newfrey LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Newfrey LLC filed Critical Newfrey LLC
Priority to GB9618505A priority Critical patent/GB2317915A/en
Publication of GB9618505D0 publication Critical patent/GB9618505D0/en
Publication of GB2317915A publication Critical patent/GB2317915A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B41/00Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/002Measures against loss of bolts, nuts or pins
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04Rivets; Spigots or the like fastened by riveting
    • F16B19/08Hollow rivets; Multi-part rivets
    • F16B19/10Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F16B19/1027Multi-part rivets
    • F16B19/1036Blind rivets
    • F16B19/1045Blind rivets fastened by a pull - mandrel or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

Means are disclosed whereby a secondary component 20 can be secured reliably to a primary component 10, by means of a threaded fastener 2 and a rivet nut 1, for relative movement between the components without one component becoming detached from the other. A head 6 of the threaded fastener passes through a first part 22 of a slot 21. A shank 5 of the threaded fastener can pass from the first part 22 of the slot 21 into an elongate portion 23 of the slot. Restraining means 25,26 prevent the shank from returning to the first part 22 of the slot.

Description

IMPROVED ASSEMBLY OF A THREADED FASTENER The present invention relates to an improved method of assembling and retaining a subassembly to a threaded fastener, and to the means whereby this can be achieved.
It is known to attach a secondary component such as a bracket, cover plate or the like to a primary workpiece by way of a threaded fastener, such as a screw or similar having a thread, passing through the secondary component and secured to the primary component in a bore having a matching thread.
It is often the case that the primary component is in the form of a thin sheet and cannot provide the necessary threaded bore. In such cases rivet nuts are used to provide a preformed bore in the primary component. It will be understood that the forming of such bores is time consuming.
An improvement is known from EP 0 494 747, in which a blind rivet nut with a pulling mandrel, having a flanged rivet tube with an internal thread has the pulling mandrel in the form of a cap screw, the cap being used to engage a setting tool. In the use of this improvement, it is convenient to place a hole in the bracket or cover plate over the cap of the cap screw and to engage the threaded portion of the screw with an elongated slot extending from the enlarged hole. The assembly may then be secured by tightening the screw.
However, it is not always convenient or desirable to have a tight assembly. Indeed, sometimes one component may be required to slide against the other, the screw being necessary to prevent the components parting. In such cases, moreover, there is a risk that the secondary component can move too far, the cap of the cap screw entering the enlarged hole and the components becoming separated.
The present invention has as an advantage that it substantially reduces this risk.
According to the present invention, a secondary component is provided, having a slot formed therein comprising a first portion and an elongated portion extending therefrom, characterised in that restraining means are provided between the first portion and the elongated portion of the slot to allow passage of a member extending through the secondary component slot only from the first portion to the elongated portion.
Preferably the member is a screw and the first portion is an enlarged portion for passing over the head of the screw.
Preferably the retaining means is a biased bar. The member will move from the first portion to the elongated portion of the hole deflecting the bar, once the member is past the bar the bar returns to its original position.
Preferably the slot is provided with a stop against which the bar may rest.
The invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 shows a known threaded fastener; Figure 2 shows the fastener of Figure 1 installed in a primary component, the primary section being shown in part-section; and Figure 3 shows a secondary component according to the invention.
Referring to Figure 1 there is shown a rivet nut 1 and a cap screw 2. The rivet nut 1 comprises a body portion 3 a flange 4 and a bore extending into the body portion, a part of which (not shown) is provided with a threaded portion. The cap screw 2 comprises a threaded shank 5 and a cap or head portion 6. The threaded shank 5 is in engagement with the threaded portion of the rivet nut body.
In use, the rivet nut body is inserted into a hole in a primary component 10, such that an underside of the flange 4 abuts the primary component. A setting tool (not shown) holds the rivet nut in place and causes the screw to move relative to the flange. The relative movement of the screw and flange causes the rivet body to buckle and deform on the blind side of the primary component, that is the side of the primary component opposite the side against which the flange of the rivet nut abuts. The primary component is thus secured between the deformed portion 7 of the rivet nut and the flange 4 (Figure 2).
The secondary component 20 may now be secured to the rivet nut assembly. The secondary component is provided with a slot 21 formed therein. The slot 21 comprises a first portion 22 through which the cap of the cap screw may pass and an elongate portion 23. The elongate portion is sufficiently wide to allow free movement of the shank 5 of the cap screw, but sufficiently narrow to prevent the cap 6 of the cap screw from passing through.
The two parts of the slot 21 are separated by retaining means in the form of a biased flexible bar 25 (shown in a rest position in Figure 3). The bar 25 is joined at a first end to the secondary component and is provided at the other end with a finger 26. The finger is adapted to abut a stop 27 formed on the opposite side of the slot from the first end of the bar. The bar 25 is sufficiently flexible to allow the passage of the screw shank from the first portion 22 into the elongate portion 23, and sufficiently rigid to prevent the return of the screw shank from the elongate portion 23 to the first portion 22, during the working life of the assembly.
The bar 25 is also biased to return to its rest position once the screw shank has initially pushed it aside to enter the elongate portion of the slot 21.
The slot 21 may be formed into the secondary component by any means suitable to the material from which the secondary component is formed. For example, for a metallic secondary component, the slot (and the bar formed thereby) may be cut, for example, by laser, or stamped from the secondary component.

Claims (6)

1 A secondary component having a slot formed therein, comprising a first portion and an elongate portion extending therefrom, in which restraining means are provided between the first portion and the elongate portion to allow passage of a member extending through the secondary component only from the first portion to the elongate portion.
2 A secondary component according to claim 1, in which the first portion is enlarged to pass over a head of the member.
3 A secondary component according to claim 1 or claim 2, in which the restraining means is a flexible biased bar.
4 A secondary component according to any preceding claim, in which the slot is provided with a stop against which the restraining means may rest.
5 A secondary component substantially as described herein with reference to and as illustrated in Figure 3 of the accompanying drawings.
6 An assembly substantially as described herein with reference to and as illustrated in the accompanying drawings.
GB9618505A 1996-09-05 1996-09-05 Improved assembly of a threaded fastener Withdrawn GB2317915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9618505A GB2317915A (en) 1996-09-05 1996-09-05 Improved assembly of a threaded fastener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9618505A GB2317915A (en) 1996-09-05 1996-09-05 Improved assembly of a threaded fastener

Publications (2)

Publication Number Publication Date
GB9618505D0 GB9618505D0 (en) 1996-10-16
GB2317915A true GB2317915A (en) 1998-04-08

Family

ID=10799438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9618505A Withdrawn GB2317915A (en) 1996-09-05 1996-09-05 Improved assembly of a threaded fastener

Country Status (1)

Country Link
GB (1) GB2317915A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009036280A1 (en) * 2009-08-06 2011-03-03 Autoliv Development Ab Motor vehicle part, has keyhole-shaped attachment opening formed in section with large width, airbag module adjusted with stay bolt and nut, and device e.g. wall section, assigned to section
TWI715113B (en) * 2019-07-19 2021-01-01 達霆精密工業有限公司 Buckle body and its assembly method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1037464A (en) * 1963-07-24 1966-07-27 Chicago United Products Compan Improvements in or relating to fastening members on supporting surfaces
GB1200358A (en) * 1967-09-11 1970-07-29 Warren Fastener Corp Fastening assembly and an adaptor therefor
GB1571588A (en) * 1977-09-08 1980-07-16 Caplan Ltd H Knock down desks
EP0071566A2 (en) * 1981-07-24 1983-02-09 RUD-Kettenfabrik Rieger & Dietz GmbH u. Co. Fastener for antiskid chains

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1037464A (en) * 1963-07-24 1966-07-27 Chicago United Products Compan Improvements in or relating to fastening members on supporting surfaces
GB1200358A (en) * 1967-09-11 1970-07-29 Warren Fastener Corp Fastening assembly and an adaptor therefor
GB1571588A (en) * 1977-09-08 1980-07-16 Caplan Ltd H Knock down desks
EP0071566A2 (en) * 1981-07-24 1983-02-09 RUD-Kettenfabrik Rieger & Dietz GmbH u. Co. Fastener for antiskid chains

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009036280A1 (en) * 2009-08-06 2011-03-03 Autoliv Development Ab Motor vehicle part, has keyhole-shaped attachment opening formed in section with large width, airbag module adjusted with stay bolt and nut, and device e.g. wall section, assigned to section
DE102009036280A8 (en) * 2009-08-06 2011-06-01 Autoliv Development Ab Vehicle part with a keyhole-shaped mounting opening for an airbag module
DE102009036280A9 (en) * 2009-08-06 2012-11-29 Autoliv Development Ab Vehicle part with a keyhole-shaped mounting opening for an airbag module
DE102009036280B4 (en) * 2009-08-06 2015-11-12 Autoliv Development Ab Vehicle part with a keyhole-shaped mounting opening for an airbag module
TWI715113B (en) * 2019-07-19 2021-01-01 達霆精密工業有限公司 Buckle body and its assembly method

Also Published As

Publication number Publication date
GB9618505D0 (en) 1996-10-16

Similar Documents

Publication Publication Date Title
US5022804A (en) Self-mounting fastener
US6514023B2 (en) Removable and reusable fastener
US3909913A (en) Method of joining sheets by use of fasteners
US5178501A (en) Axially adjustable screw anchor
US5265312A (en) Hook device in power driven tool
EP0024491B1 (en) Pivot joint and window stay including such a pivot joint
US7210886B2 (en) Fastener for curtain airbag
EP0898087B1 (en) Fastening assembly for fastening a first member to a second member
US4574453A (en) Self-attaching fastener and method of securing same to sheet material
US4386515A (en) Setting tool for blind fasteners
JPH07503663A (en) Improved panel clinching method
US6595732B2 (en) Retainer cage for fastener
US4975007A (en) Captive fastener
US4767248A (en) Fastener for securing panels of composite materials
EP0556993B1 (en) Blind pin fixing
GB2310904A (en) Blind rivet nut for fixing three sheets
GB2317915A (en) Improved assembly of a threaded fastener
US5230137A (en) Method for fastening together two or more non-aligned parts
US5599147A (en) Blind rivet with a tapered locking mechanism
GB2307508A (en) One-piece fastener
GB2316457A (en) Blind rivet nut and spacer combination
US5193933A (en) In situ modular fastening system
EP0537967A1 (en) A headed stud
US5848801A (en) Apparatus for fastening a gas bag
WO2004082864A3 (en) Offset nose assembly with improved deflector and guard assemblies

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)