GB2300031A - Retainer for a blind rivet nut assembly - Google Patents

Retainer for a blind rivet nut assembly Download PDF

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Publication number
GB2300031A
GB2300031A GB9508133A GB9508133A GB2300031A GB 2300031 A GB2300031 A GB 2300031A GB 9508133 A GB9508133 A GB 9508133A GB 9508133 A GB9508133 A GB 9508133A GB 2300031 A GB2300031 A GB 2300031A
Authority
GB
United Kingdom
Prior art keywords
workpiece
head
adaptor
shank
hole
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.)
Granted
Application number
GB9508133A
Other versions
GB9508133D0 (en
GB2300031B (en
Inventor
Daniel Robin Smith
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 GB9508133A priority Critical patent/GB2300031B/en
Publication of GB9508133D0 publication Critical patent/GB9508133D0/en
Publication of GB2300031A publication Critical patent/GB2300031A/en
Application granted granted Critical
Publication of GB2300031B publication Critical patent/GB2300031B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F16B19/1027—Multi-part rivets
    • F16B19/1036—Blind rivets
    • F16B19/1045—Blind rivets fastened by a pull - mandrel or the like
    • F16B19/1072—Blind rivets fastened by a pull - mandrel or the like the pull-mandrel or the like comprising a thread and being rotated with respect to the rivet, thereby mechanically expanding and fastening the rivet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/04—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
    • F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
    • F16B5/0621—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship
    • F16B5/065—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship the plates being one on top of the other and distanced from each other, e.g. by using protrusions to keep contact and distance

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

A blind rivet nut assembly 2, 7 is retained by passing a resilient adaptor 10 in to a hole 21 in a second workpiece 20, the blind rivet nut 2 is passed through a hole in a first workpiece 30, the threaded rivet mandrel 7 is pulled to set the blind rivet nut 2, and the threaded mandrel 7 is screwed into the blind rivet nut 2 to releasably secure the workpieces together.

Description

FASTENER ASSEMBLY This invention is concerned with fastener assemblies which are useful in securing, but not necessarily permanently, one workpiece to another.
One fastener assembly which is conveniently used in securing, detachably, one workpiece to another is often referred to as a rivet nut. A rivet nut comprises a rivet body comprising a head and a shank extending from the head, a bore extending from the head in the body, which bore comprises at least a portion which is threaded. A screw, comprising a head and a threaded shank, is engaged into the threaded portion of the bore; in use, the rivet body is inserted in a hole in a workpiece, a tool is caused to engage the head of the rivet body, thus to force it against the workpiece, and the head of the screw, thus to draw it away from the rivet body to cause setting of the rivet body in the hole in the workpiece.
Once such a rivet nut has been set, a further second workpiece can be secured to the first workpiece. This can be done by removing the screw from the rivet body and using it to attach the second workpiece in a conventional way - a procedure which entails removing the screw, replacing it through the second workpiece and tightening it up. Such an operation is somewhat time consuming and inconvenient.
An alternative way of securing a second workpiece is to provide a keynote slot in the workpiece, slide the larger part of the keyhole slot over the screw head, slide the workpiece transversely so that the narrow part of a slot surrounds the shank of the screw and then tighten the screw.
This has the disadvantage that the punching of keyhole slots in a workpiece is comparatively expensive, and if the workpiece is to be attached at more than one point very careful positioning and orientation of the keyhole slots is essential.
According to a first aspect of the invention an adaptor for use with a blind rivet nut is provided comprising a head and a shank, a bore extending from the head, the shank being provided with a number of longitudinal slots extending towards the head to form a number of fingers, the fingers being provided with detent means.
Preferably the fingers are identical.
Preferably the fingers are equidistant.
Preferably the adaptor is made from metal, for example from steel.
According to a second aspect of the invention an assembly is provided comprising a blind rivet nut, which nut comprises a mandrel having a head and a threaded shank and a rivet body comprising a rivet head and a shank having a threaded bore, the mandrel being engaged in the threaded bore and an adaptor according to the first aspect of the invention is assembled between the head of the rivet body and the head of the mandrel.
According to a third aspect of the invention, a method of securing a second workpiece to a first workpiece is provided, the first and second workpieces each comprising a hole in which an assembly is positioned in the hole in the second workpiece by the adaptor, the assembly is positioned in the hole in the first workpiece by the shank of the rivet body, a setting operation is performed to set the rivet body in the hole in the first workpiece, and the mandrel is screwed into the rivet body, thereby securing the second workpiece to the first.
The invention will now be described, by way of example only, with reference to the accompanying drawings, in which Figure 1 shows a side view of an assembly according to the second aspect of the invention; Figure 2 shows the assembly of Figure 1 and a second workpiece; Figure 3 shows the assembly of Figure 1 in position with respect to the second workpiece; Figure 4 shows the assembly, first and second workpieces and a setting tool; Figure 5 shows a set assembly; Figure 6 shows the final step of the third aspect of the invention; and Figure 7 shows how the second workpiece may be removed from the first workpiece.
Referring to Figure 1 there is shown a known fastener or rivet nut assembly 1 fitted with an adaptor. The rivet nut assembly comprises a rivet body 2 comprising a head 3 and a shank 4 extending from the head, a bore 5 extending from the head, which bore comprises at least a portion 6 which is threaded. A mandrel, in the form of a screw 7, comprising a head 8 and a threaded shank 9 is engaged into the threaded portion of the bore.
The adaptor 10 comprises a head 11 and a shank 12 extending from the head, a bore 13 extending from the head.
The adaptor 10 is passed over the shank 4 of the rivet body, prior to the engagement of the shank 9 and the threaded portion 6 of the rivet body 2. The shank 12 of the adaptor is preferably provided with a plurality of slots 14 to form preferably a plurality of arms 15 on the adaptor.
Preferably, four equidistant slots are used to form four equal arms. The ends of the arms 15 remote from the head 11 of the adaptor are provided with detent means 16.
The completed assembly comprising the rivet body 2, the screw 7 and the adaptor 10 can now be inserted into a suitable hole 21 in a second workpiece 20, such as a cover plate (Figure 2).
The head of the adaptor 10 is larger than the hole 21 in the workpiece and cannot pass through. The detent means 14 while being larger than the hole can deflect inwards and pass through the hole. In Figure 3, the adaptor can be seen with the second workpiece being held on the shank 12 of the adaptor between the head of the adaptor and the detent means.
Once an appropriate number of adaptors have been secured to the second workpiece in this way, the second workpiece can now be placed in position for fastening to a first workpiece 30.
The various rivet nut assemblies secured to the second workpiece by their respective adaptors are now already in the correct position relative to one another for insertion in corresponding holes in the first workpiece. The shank of each rivet body 2 is passed into a hole 31 in the first workpiece 3 until the head 3 abuts the first workpiece. The rivet nut assembly can now be set by the use of a suitable setting tool as seen in Figure 4.
The setting tool 35 has two sets of jaws; a first 36 locating on the head of the adaptor to push towards the workpieces to keep the adaptor in position (and to provide a reaction force) and a second 37 locating under the head of the screw to pull away from the workpieces.
The rivet nut assembly is then set, the shank of the rivet body deforming to form a clinch zone 40 on the blind side of the first workpiece. In this way, the first workpiece is held in position relative to the rivet body by the clinch zone on the blind side and by the head of the rivet body on the other. (Figure 5) The second workpiece is free to move along the screw between the head of the rivet body and the head of the screw. To prevent this, the screw can simply be tightened such that the second workpiece is held securely in relation to the first workpiece by the rivet nut assembly and the adaptor.
Should it become necessary to remove the second workpiece, for example for inspection of components mounted on the first workpiece, the screws can be unscrewed and the second workpiece removed (Figure 6). The second workpiece can subsequently be replaced by placing it in position in relation to the first workpiece and re-inserting and tightening the screws.

Claims (6)

1 An adaptor for use with a blind rivet nut comprising a head and a shank, a bore extending from the head, the shank being provided with a number of longitudinal slots extending towards the head to form a number of fingers, the fingers being provided with detent means.
2 An adaptor according to Claim 1, characterised in that the fingers are identical.
3 An adaptor according to Claim 1 characterised in that the fingers are equidistant.
4 An adaptor according any previous claims, characterised in that the adaptor is made from plastics.
5 An assembly comprising a blind rivet nut, which nut comprises a mandrel having a head and a threaded shank and a rivet body comprising a rivet head and a shank having a threaded bore, the mandrel being engaged in the threaded bore and an adaptor and an adaptor according to any previous claim assembled between the head of the rivet body and the head of the mandrel.
6 A method of securing a second workpiece to a first workpiece, the first and second workpieces each comprising a hole in which an assembly according to claim 5 is positioned in the hole in the second workpiece by the adaptor, the assembly is positioned in the hole in the first workpiece by the shank of the rivet body, a setting operation is performed to set the rivet body in the hole in the first workpiece, and the mandrel is screwed into the rivet body.
GB9508133A 1995-04-21 1995-04-21 Fastener assembly Expired - Fee Related GB2300031B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9508133A GB2300031B (en) 1995-04-21 1995-04-21 Fastener assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9508133A GB2300031B (en) 1995-04-21 1995-04-21 Fastener assembly

Publications (3)

Publication Number Publication Date
GB9508133D0 GB9508133D0 (en) 1995-06-07
GB2300031A true GB2300031A (en) 1996-10-23
GB2300031B GB2300031B (en) 1998-11-04

Family

ID=10773314

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9508133A Expired - Fee Related GB2300031B (en) 1995-04-21 1995-04-21 Fastener assembly

Country Status (1)

Country Link
GB (1) GB2300031B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6069905A (en) * 1997-12-31 2000-05-30 Honeywell Inc. Vertical cavity surface emitting laser having intensity control
EP1213488A2 (en) * 2000-12-09 2002-06-12 Meritor Light Vehicle Systems-France Assembly
DE10126747A1 (en) * 2001-05-31 2002-12-19 Gesipa Blindniettechnik Blind rivet nut and fastening unit
DE10253888B4 (en) * 2001-05-31 2005-07-21 Gesipa Blindniettechnik Gmbh fixing unit
EP1600645A1 (en) * 2004-05-28 2005-11-30 Newfrey LLC Insulating fastener
CN105257639A (en) * 2015-10-12 2016-01-20 贵州航天精工制造有限公司 Locking pin assembly and application method thereof
CN111637130A (en) * 2020-06-12 2020-09-08 贵州航天精工制造有限公司 Split combined type rivet nut connecting method and structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB997003A (en) * 1962-06-14 1965-06-30 Dare Inglis Products Ltd Improvements in or relating to chairs
GB1424065A (en) * 1973-03-28 1976-02-04 Sangamo Weston Fastening devices
GB1497010A (en) * 1976-10-20 1978-01-05 Ford Motor Co Washer for vent window
GB2171772A (en) * 1985-02-28 1986-09-03 Bulent Gulistan Captive panel fastener
EP0336808A1 (en) * 1988-04-01 1989-10-11 AEROSPATIALE Société Nationale Industrielle Insertable clamp having interior mechanism
US4934885A (en) * 1985-02-25 1990-06-19 The Boeing Company Tack fastener

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB997003A (en) * 1962-06-14 1965-06-30 Dare Inglis Products Ltd Improvements in or relating to chairs
GB1424065A (en) * 1973-03-28 1976-02-04 Sangamo Weston Fastening devices
GB1497010A (en) * 1976-10-20 1978-01-05 Ford Motor Co Washer for vent window
US4934885A (en) * 1985-02-25 1990-06-19 The Boeing Company Tack fastener
GB2171772A (en) * 1985-02-28 1986-09-03 Bulent Gulistan Captive panel fastener
EP0336808A1 (en) * 1988-04-01 1989-10-11 AEROSPATIALE Société Nationale Industrielle Insertable clamp having interior mechanism

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6069905A (en) * 1997-12-31 2000-05-30 Honeywell Inc. Vertical cavity surface emitting laser having intensity control
EP1213488A2 (en) * 2000-12-09 2002-06-12 Meritor Light Vehicle Systems-France Assembly
EP1213488A3 (en) * 2000-12-09 2003-05-07 Meritor Light Vehicle Systems-France Assembly
US7069696B2 (en) 2000-12-09 2006-07-04 Meritor Light Vehicle Systems-France Assembly
DE10126747A1 (en) * 2001-05-31 2002-12-19 Gesipa Blindniettechnik Blind rivet nut and fastening unit
DE10126747C2 (en) * 2001-05-31 2003-06-05 Gesipa Blindniettechnik Blind rivet nut and fastening unit
US6893196B2 (en) 2001-05-31 2005-05-17 Gesipa Blindniettechnik Gmbh Blind rivet nut and fastening unit
DE10253888B4 (en) * 2001-05-31 2005-07-21 Gesipa Blindniettechnik Gmbh fixing unit
EP1600645A1 (en) * 2004-05-28 2005-11-30 Newfrey LLC Insulating fastener
CN105257639A (en) * 2015-10-12 2016-01-20 贵州航天精工制造有限公司 Locking pin assembly and application method thereof
CN105257639B (en) * 2015-10-12 2017-03-29 贵州航天精工制造有限公司 A kind of locking pin assemblies and its using method
CN111637130A (en) * 2020-06-12 2020-09-08 贵州航天精工制造有限公司 Split combined type rivet nut connecting method and structure

Also Published As

Publication number Publication date
GB9508133D0 (en) 1995-06-07
GB2300031B (en) 1998-11-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000421