WO1989010238A1 - Outil de mise en place d'insertions filetees - Google Patents

Outil de mise en place d'insertions filetees

Info

Publication number
WO1989010238A1
WO1989010238A1 PCT/GB1989/000450 GB8900450W WO8910238A1 WO 1989010238 A1 WO1989010238 A1 WO 1989010238A1 GB 8900450 W GB8900450 W GB 8900450W WO 8910238 A1 WO8910238 A1 WO 8910238A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
threaded
tool
screw
body part
Prior art date
Application number
PCT/GB1989/000450
Other languages
English (en)
Inventor
John Peter Darling
Robert Francis Darling
Original Assignee
Alfred Darling & Sons Ltd
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 Alfred Darling & Sons Ltd filed Critical Alfred Darling & Sons Ltd
Publication of WO1989010238A1 publication Critical patent/WO1989010238A1/fr
Priority to GB9023489A priority Critical patent/GB2237525B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/143—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same for installing wire thread inserts or tubular threaded inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0007—Tools for fixing internally screw-threaded tubular fasteners

Definitions

  • This invention relates to threaded insert placing tools.
  • Threaded inserts are widely used to incorporate a thread into a sheet of material. A hole is drilled in the sheet of material. An insert is screwed onto a placing tool and is then placed in this hole. The placing tool is then used to compress the insert, which deforms and becomes locked onto the sheet leaving a permanently fixed threaded bush, to which any item can then be bolted.
  • the first is a lever type, which consists of a threaded portion which screws into the insert, a former to hold the insert and a lever arrangement to pull the screw and thus compress the insert.
  • Tools of this type leave a uniform finish on the front end of the insert, but the effort required for the compression is considerable, especially for larger inserts such as those greater than 6mm in diameter.
  • This type of tool is also very cumbersome in confined spaces because of the long handles required for leverage.
  • the second type of hand tool available to compress the inserts is a so-called screw-type.
  • the insert is compressed by a screwing action using its own thread for compression.
  • This type can usually cope with larger inserts of eg up to 8mm in diameter.
  • the finish is generally poor, since to prevent rotation of the insert during compression the tool includes a sharply serrated abutment surface which engages the front face of the insert in use leaving it severely pitted. Further problems can arise from the insert not being properly centred with respect to the tool during compression. It is an object of the present invention to provide an improved screw-type threaded insert placing tool.
  • the present invention provides a screw-type insert placing tool, comprising a drive screw for threaded engagement with an insert and an abutment part for engaging the front end of the insert against which the insert is compressed when the tool is in use, wherein the abutment part includes a circular recess, the peripheral edge of which radially engages the rim of the insert during compression to prevent rotation of the insert.
  • the tool will provide an improved finish on the threaded insert. Since rotation of the insert is restrained by radial engagement between the rim of the insert and the edge of the recess the use of sharp serrations which severely pit the front face of the recess may be avoided.
  • the base of the recess may therefore be substantially flat, although in a preferred embodiment the base includes slight serrations to assist initial engagement with the insert. These serrations need not substantially pit the surface, as in the prior art, as the edge of the recess performs the substantial part of the gripping as the rim spreads radially into firm engagement with the edge of the recess.
  • a further advantage of the recess is that it limits the amount of material of the insert pulled through an opening in sheet material during engagement by the insert by limiting radial spreading, thus avoiding leaving insufficient foldable material behind the opening for firm mounting of the insert to be achieved.
  • the diameter of the recess is preferably slightly larger than the outside diameter of the rim of the insert. This allows for tolerances on the insert size, and also limits the radial spread of the rim during compression. Because of the small permitted spread, the insert is substantially centred whilst being fixed to a sheet of material. Also preferably, the abutment part having the recess is interchangeable so that recesses, and therefore inserts of different sizes, can be accommodated.
  • This part could be nut- shaped and adapted for engagement in a complementary recess in a body part of the tool, but is preferably a cup-shaped cap releaseably mounted on a body part of the tool.
  • a simplified version of the tool more suitable for the DIY market may have only a single recess size for standard inserts supplied with the tool.
  • the drive screw rotates with respect to the body of the tool on bearings, thus avoiding unnecessary torque required to overcome friction.
  • these bearings are contained in one unit, and may comprise roller-bearings.
  • the tool could be automated, but the invention is particularly applicable to a manual tool.
  • the drive screw is preferably rotatably mounted in a tubular body part, handles, hand-grips, or means for fixing hand-grips being provided for effecting relative rotation.
  • bearings are arranged between the screw and body part.
  • the invention provides a hand held threaded insert placing tool with a drive screw rotatably mounted in and projecting outwardly from a tubular body part, hand ⁇ grips being coupled or adapted to be coupled respectively to the drive screw and body part, bearing means being arranged between the drive screw and body part to provide low friction relative rotational movement therebetween in use.
  • the bearing means is retained in the tubular body part by means of a tubular sleeve which is removably mounted in the body part and the front of which abuts the bearing means, a radially projecting hand grip being threadedly engaged in a radial aperture in the body part, and a threaded part of the hand grip co-operating internally with the sleeve to maintain it in place in the assembled tool, so that removal or loosening of the hand grip facilitates removal of the sleeve and bearing means.
  • the bearing means are contained in one unit, and may comprise roller-bearings.
  • Fig. 1 shows the insert placing tool in longitudinal section
  • Fig. la shows the cap from the underside; and Figs. 2a, b, c show the method of operation of the tool.
  • the insert placing tool comprises a spindle 1, a casing 2, a drive screw 3, a serrated cap 4, bearings 5, thrust-washers 6, a connector 7, a sleeve 8, a Delrin bush 9, handle 10, bush lever 11, lever handle 12 which has a threaded end 13 which fits into a correspondingly threaded hole 14 in the casing 2.
  • This lever handle 12 maintains the sleeve 8 in position.
  • the serrated cap 4 is held onto the casing 2 by ball and spring 15.
  • the handle 10 and bush 11 are held into the spindle 1 by a rollpin 16.
  • the connector 7 is similarly held onto the spindle with a rollpin 17 and the serrated cap is prevented from rotating during use with the rollpin 18.
  • FIG la is a detailed drawing of the cap 4.
  • the diameter of the recess is preferably .125mm to .250mm larger than inserts of diameter 6mm or less, and .250mm to ,5mm larger than inserts of over this size.
  • the recess further prevents an excess amount of foldable material from being pulled through to the upper side of the metal sheet.
  • the recess then acts as a grip for the insert, preventing it from turning with respect to the metal sheet. As the tool is tightened further, the foldable material underneath the sheet splays out and grips the metal sheet ( Figure 2c) .
  • the bearing 5 and thrust washers 6 are a further improvement over the prior art. Because of the bearing, the main part of the torque applied to the tool is used only to deform the insert rather than to overcome friction between parts of the tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Automatic Assembly (AREA)

Abstract

Un outil manuel de mise en place d'insertions filetées comprend une vis d'entraînement (3) à visser dans une insertion (23) et un embout (4) qui retient l'extrémité antérieure de l'insertion. L'embout (4) comprend une rainure circulaire dont le bord périphérique (4a) engage radialement le rebord (22) de l'insertion de façon à empêcher celle-ci d'être mise en rotation lorsqu'elle est comprimée. La rainure est de préférence légèrement plus grande que lediamètre externe du rebord de l'insertion et sa base peut comprendre une légère dentelure (24) auxiliaire de l'engagement initial de l'insertion. L'entraînement (3) est rotativement monté dans le corps (2) au moyen d'un coussinet (5) de préférence contenu dans une seule unité et maintenu en place par un manchon tubulaire (8).
PCT/GB1989/000450 1988-04-29 1989-04-27 Outil de mise en place d'insertions filetees WO1989010238A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9023489A GB2237525B (en) 1988-04-29 1990-10-29 Threaded insert placing tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888810183A GB8810183D0 (en) 1988-04-29 1988-04-29 Threaded insert placing tool
GB8810183.7 1988-04-29

Publications (1)

Publication Number Publication Date
WO1989010238A1 true WO1989010238A1 (fr) 1989-11-02

Family

ID=10636100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1989/000450 WO1989010238A1 (fr) 1988-04-29 1989-04-27 Outil de mise en place d'insertions filetees

Country Status (2)

Country Link
GB (2) GB8810183D0 (fr)
WO (1) WO1989010238A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996023632A1 (fr) * 1995-01-30 1996-08-08 Horst Pietrzyk Outil de pose d'ecrous de rivets borgnes
EP2361728A3 (fr) * 2010-02-22 2012-12-26 John Kenneth Hastings Outil d'installation d'écrous de rivets

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641378A (en) * 1949-06-01 1953-06-09 Goodrich Co B F Hand-powered tool for upsetting hollow rivets
US3008598A (en) * 1960-09-28 1961-11-14 Martin Alan Rivet nut tool
DE1627418A1 (de) * 1967-12-27 1970-10-29 Deutsch Fastener Corp Werkzeug zum Verformen von Huelsen an Befestigungselementen
DE2009428A1 (de) * 1969-03-19 1970-10-29 Aerpat Ag, Zug (Schweiz) Handwerkzeug zum Setzen von Blindankermuttern
FR2129467A5 (fr) * 1971-03-08 1972-10-27 Avdel Ltd
FR2256003A1 (en) * 1973-12-28 1975-07-25 Otalu Sa Tool for fixing threaded tubular rivets - uses levered rotation of bolt screwed into rivet to axially compress rivet
FR2387090A1 (fr) * 1977-04-11 1978-11-10 Avibank Mfg Inc Outil manuel pour l'installation d'ecrous d'ancrage borgnes
US4402203A (en) * 1982-07-22 1983-09-06 Deutsch Fastener Corp. Fastener installation tool
GB2185705A (en) * 1984-06-01 1987-07-29 Jednotne Rolnicke Druzstvo Slo Riveting tool for one side riveting of rivet nuts

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641378A (en) * 1949-06-01 1953-06-09 Goodrich Co B F Hand-powered tool for upsetting hollow rivets
US3008598A (en) * 1960-09-28 1961-11-14 Martin Alan Rivet nut tool
DE1627418A1 (de) * 1967-12-27 1970-10-29 Deutsch Fastener Corp Werkzeug zum Verformen von Huelsen an Befestigungselementen
DE2009428A1 (de) * 1969-03-19 1970-10-29 Aerpat Ag, Zug (Schweiz) Handwerkzeug zum Setzen von Blindankermuttern
FR2129467A5 (fr) * 1971-03-08 1972-10-27 Avdel Ltd
FR2256003A1 (en) * 1973-12-28 1975-07-25 Otalu Sa Tool for fixing threaded tubular rivets - uses levered rotation of bolt screwed into rivet to axially compress rivet
FR2387090A1 (fr) * 1977-04-11 1978-11-10 Avibank Mfg Inc Outil manuel pour l'installation d'ecrous d'ancrage borgnes
US4402203A (en) * 1982-07-22 1983-09-06 Deutsch Fastener Corp. Fastener installation tool
GB2185705A (en) * 1984-06-01 1987-07-29 Jednotne Rolnicke Druzstvo Slo Riveting tool for one side riveting of rivet nuts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996023632A1 (fr) * 1995-01-30 1996-08-08 Horst Pietrzyk Outil de pose d'ecrous de rivets borgnes
EP2361728A3 (fr) * 2010-02-22 2012-12-26 John Kenneth Hastings Outil d'installation d'écrous de rivets
US8485011B2 (en) 2010-02-22 2013-07-16 John Kenneth Hastings Tool for installing rivet nuts

Also Published As

Publication number Publication date
GB2237525A (en) 1991-05-08
GB2237525B (en) 1992-05-27
GB9023489D0 (en) 1991-02-27
GB8810183D0 (en) 1988-06-02

Similar Documents

Publication Publication Date Title
US5690452A (en) Spring loaded automatic plug ejector or hole saws
EP1791668B1 (fr) Ensemble collet sans outil
US4762035A (en) Depth adjusting device for screwdrivers
EP0842742B1 (fr) Outil pour enlever des éléments de fixation.
US8905822B2 (en) Clamp nut
US2948173A (en) Hand tool with adjustable torque release
US3508455A (en) Combination tool
US6893335B2 (en) Mounting device for abrasive wheels
EP0446198A1 (fr) Mecanisme de serrage rapide a verrou excentrique.
US4960017A (en) Hand tool for mounting or dismounting bicycle cranks
JPH11277312A (ja) チャック
US4476617A (en) Bearing installation tool
US5348319A (en) Chuck utilizing cam
WO1989010238A1 (fr) Outil de mise en place d'insertions filetees
US4984844A (en) Safety key for toolroom lathe chuck
US5782588A (en) Draw bar assisted rotary hole sawing
US4468895A (en) Surface grinder attachment
US5797302A (en) Screwdriver adapted to be coupled to an electric drill for automatic rotation thereof
EP0028019A1 (fr) Dispositif consistant en un écrou aveugle, et un outil pour son montage et procédé de montage
US10946455B2 (en) Keyless chuck assembly
CN219819542U (zh) 一种快速扳手
JPS5821606Y2 (ja) 携帯用電動工具のサイドハンドル着脱機構
JPH0752055A (ja) ドライバー
NZ781673A (en) Instantaneous availability of home cooked meals
JPH0244961Y2 (fr)

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): DK GB NO US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE