EP1262259A1 - Handnietgerät - Google Patents

Handnietgerät Download PDF

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Publication number
EP1262259A1
EP1262259A1 EP02425343A EP02425343A EP1262259A1 EP 1262259 A1 EP1262259 A1 EP 1262259A1 EP 02425343 A EP02425343 A EP 02425343A EP 02425343 A EP02425343 A EP 02425343A EP 1262259 A1 EP1262259 A1 EP 1262259A1
Authority
EP
European Patent Office
Prior art keywords
riveting tool
slider
pulling
pin
tool according
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Withdrawn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
EP02425343A
Other languages
English (en)
French (fr)
Inventor
Massimo Generali
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.)
Far Srl
Original Assignee
Far Srl
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 Far Srl filed Critical Far Srl
Publication of EP1262259A1 publication Critical patent/EP1262259A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
    • B21J15/386—Pliers for riveting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/043—Riveting hollow rivets mechanically by pulling a mandrel

Definitions

  • the present invention relates to a hand riveting tool.
  • the present invention relates to a hand riveting tool used to apply rivets by gripping, pulling and breaking the mandrel positioned coaxially inside each rivet.
  • Customary hand riveting tools of this type usually comprise two supporting and actuating elements pivoted to each other crossways on a pivot pin about which the two elements themselves rotate. On opposite sides of the pin, each element presents a long first portion forming a handle, by which the riveting tool can be held, and a short second portion forming part of a device for gripping and pulling the rivet mandrels.
  • the gripping and pulling device usually comprises: two jaws for clamping the mandrels; a slider which moves in the mandrel pulling direction and which engages with to the jaws in such a way as to drive them from an advanced position where they receive the mandrels to a retracted position where they clamp and pull the mandrels; and a slider sliding guide.
  • the sliding guide is supported by the short portion of one of the two supporting and actuating elements relative to which the other element acts as a lever in such a way as to cause the slider to slide in the guide in the aforementioned pulling direction when the handles are moved towards each other.
  • the short portion of the supporting and actuating element that acts as lever is coupled to the slider and, more specifically, to a curved slot made in the slider, by a second pin protruding from the short portion itself and parallel to the pivot pin which connects the two supporting and actuating elements.
  • the present invention has for an object to provide a hand riveting tool that significantly reduces the average effort which the user is required to exert to grip, pull and break the rivet mandrels.
  • the present invention provides a hand riveting tool for break mandrel rivets; the riveting tool comprising gripping and pulling means for engaging and pulling up the mandrels, and means for actuating the gripping and pulling means; said gripping and pulling means comprising means for clamping the mandrels and means for driving the clamping means in a mandrel pulling direction; the riveting tool being characterised in that the drive means have at least one variable length lever arm actuated by the actuating means and applying on the actuating means a resisting action that is correlated according to a constant proportionality factor to the resisting action exerted by the mandrels.
  • the numeral 1 denotes in its entirety a hand riveting tool designed to apply rivets (not illustrated) of the type with break mandrels (not illustrated).
  • the riveting tool 1 comprises two supporting and actuating elements 2, 3 pivoted to each other crossways on a pivot pin 4 about which the two elements 2 and 3 themselves rotate.
  • the pivot pin 4 is supported at its two opposite ends by the element 2 and is rotatably fitted inside a through hole 5 made in the element 3.
  • each element 2, 3 presents a long first portion 2a, 3a forming handles, 6, 7 by which the riveting tool 1 can be held, and a short second portion 2b, 3b forming part of a device 8 for gripping and pulling the rivet mandrels.
  • the portion 2b is shaped to form a substantially cylindrical hollow body 9 extending transversally to the portion 2a and, at the end opposite the portion 2a, is delimited by an interchangeable nozzle 10 which receives the mandrels.
  • the body 9 slidably houses and guides inside it a hollow slider 11 that can move in a straight line in a mandrel pulling direction D between a first limit position P1 ( Figure 1), where the slider 11 is close to the nozzle 10, and a second limit position P2 ( Figure 2), where the slider 11 and the nozzle 10 are positioned at a defined maximum distance from each other.
  • the slider 11 rigidly supports a second pin 12, which extends transversally to the direction D and parallel to the pin 4, and which is slidably engaged in a slot 13 made in the second portion 3b of the element 3.
  • the second portion 3b with the slot 13, forms a lever arm which engages with the slider 11 and whose length is given by the variable distance between the pins 4 and 12.
  • the gripping and pulling device 8 further comprises two jaws 14 for gripping, clamping and pulling the mandrels.
  • the jaws 14 are housed at least partially inside the slider 11 and are slidably engaged with a tapered inside wall of the slider 11.
  • Each of the jaws 14 has a first end facing the nozzle 10 and a second end, opposite the first end, coupled with a truncated cone shaped pushing element 15 also positioned inside the slider 11.
  • the element 15 is in turn coupled with a helical spring 16 which extends in the direction D between the element 15 itself and an end wall 17 of the slider 11, the end wall 17 being located at the end opposite the nozzle 10.
  • the position shown in Figure 1 is also the position where the distance between the pins 4 and 12 is at its largest.
  • the angle made by the handles 6 and 7 is at its smallest, the slider 11 is located at its position P2, the spring 16 is in position of maximum loading, the element 15 is at its largest distance from the nozzle 10 and the jaws 14 are located in a retracted mandrel pulling position where the jaws 14 themselves are closest together.
  • the position shown in Figure 2 is also the position where the distance between the pins 4 and 12 is at its smallest.
  • the portion 3b of the element 3, with the slot 13 acts as a resisting lever arm formed by the element 3 pivoted on the pin 4 to drive the slider 11 in the direction D away from the nozzle 10.
  • the pin 12 moves in a straight line in the direction D relative to the pin 4, and the distance between the pins 4 and 12 decreases from the largest to the smallest value in proportion to the movement of the pin 12 away from the nozzle 10. Moreover, as the distance between the pins 4 and 12 decreases, the projection of this distance onto the aforementioned plane normal to the direction D remains constant.
  • the slider 11 applies to the element 3 a resisting moment which, advantageously, is correlated to the resisting force of the mandrels according to a constant proportionality factor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Fuses (AREA)
  • Food-Manufacturing Devices (AREA)
  • Insertion Pins And Rivets (AREA)
EP02425343A 2001-05-31 2002-05-29 Handnietgerät Withdrawn EP1262259A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20010351 2001-05-31
IT2001BO000351A ITBO20010351A1 (it) 2001-05-31 2001-05-31 Rivettatrice manuale

Publications (1)

Publication Number Publication Date
EP1262259A1 true EP1262259A1 (de) 2002-12-04

Family

ID=11439396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02425343A Withdrawn EP1262259A1 (de) 2001-05-31 2002-05-29 Handnietgerät

Country Status (2)

Country Link
EP (1) EP1262259A1 (de)
IT (1) ITBO20010351A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102476158A (zh) * 2010-11-20 2012-05-30 余姚唐文工具有限公司 单把式拉铆枪
CN105081183A (zh) * 2014-05-20 2015-11-25 展仪工业股份有限公司 拉钉工具
WO2020211068A1 (zh) * 2019-04-19 2020-10-22 杭州联和工具制造有限公司 一种拉铆枪

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561249A (en) * 1968-11-29 1971-02-09 Richard B Freeman Blind rivet tool with modulated force linkage
NL7408634A (en) * 1974-06-26 1975-12-30 Beargrip Gereedschappenfabriek Blind-riveting tool with two pivoted halves - has one half with slotted hole engaging pins on operating means in other half

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561249A (en) * 1968-11-29 1971-02-09 Richard B Freeman Blind rivet tool with modulated force linkage
NL7408634A (en) * 1974-06-26 1975-12-30 Beargrip Gereedschappenfabriek Blind-riveting tool with two pivoted halves - has one half with slotted hole engaging pins on operating means in other half

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102476158A (zh) * 2010-11-20 2012-05-30 余姚唐文工具有限公司 单把式拉铆枪
CN102476158B (zh) * 2010-11-20 2014-12-10 余姚唐文工具有限公司 单把式拉铆枪
CN105081183A (zh) * 2014-05-20 2015-11-25 展仪工业股份有限公司 拉钉工具
WO2020211068A1 (zh) * 2019-04-19 2020-10-22 杭州联和工具制造有限公司 一种拉铆枪
US20220203431A1 (en) * 2019-04-19 2022-06-30 Hangzhou United Tools Co., Ltd. Hand riveter

Also Published As

Publication number Publication date
ITBO20010351A1 (it) 2002-12-01
ITBO20010351A0 (it) 2001-05-31

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