EP0489229B1 - Handbetriebenes Heftgerät - Google Patents

Handbetriebenes Heftgerät Download PDF

Info

Publication number: EP0489229B1
Authority: EP; European Patent Office
Prior art keywords: spring; pusher blade; stapling; magazine; locking pawl
Prior art date: 1990-12-05
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.): Expired - Lifetime

Application number

EP19910113962

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0489229A2 (de

EP0489229A3 (en

Inventor

Jorge Grau Perez

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.)

Erwin Mueller GmbH and Co

Original Assignee

Erwin Mueller GmbH and Co

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.)

1990-12-05

Filing date

1991-08-21

Publication date

1993-08-11

1991-08-21 Application filed by Erwin Mueller GmbH and Co filed Critical Erwin Mueller GmbH and Co

1992-06-10 Publication of EP0489229A2 publication Critical patent/EP0489229A2/de

1992-07-22 Publication of EP0489229A3 publication Critical patent/EP0489229A3/de

1993-08-11 Application granted granted Critical

1993-08-11 Publication of EP0489229B1 publication Critical patent/EP0489229B1/de

2011-08-21 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
- B25C5/02—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work
- B25C5/0221—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation
- B25C5/0242—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation having a pivoting upper leg and a leg provided with an anvil supported by the table or work

Definitions

the invention is based on a stapler according to the preamble of claim 1 and relates in particular to a mechanism for detaching the individual staple from a staple strip and for driving the same into the material to be stapled.
GB-A-2 229 129 has already disclosed a hand-operated stapling device, the butt knife of which is connected to a spring which in turn is mounted between the housing halves of the stapling device, the butt knife being guided in the housing, which is also closed at the top.
a pawl is also movably mounted in an elongated hole in the housing.
One nose engages in an opening of the impact knife, while the other end, provided with a roller, of the pawl is in constant operative connection with an actuating lever.
the spring should be tensioned after the pawl has re-engaged in the opening of the impact knife via the pawl and the actuating lever under the action of a second, previously compressed spring, the force of which is greater than that of the tension spring.
This actuating mechanism is disadvantageous insofar as its spring elements must each be designed for a specific or for a maximum thickness of stapled material, so that larger, mostly unnecessary spring forces have to be applied. On the other hand, tensioning and locking are carried out with the same pawl. Considerable manual forces must therefore be applied to tension the second spring and to unlock the impact knife.
the invention is therefore based on the object of a generic type that partially automates the function Specify a stapling device with an improved actuating mechanism that reduces the effort required to carry out and trigger the stapling process and, if the spring force is low and does not match the strength of the stapled material, enables the stapling process to be carried out completely.
the object is achieved with a stapling device in which the butt knife in the zero position protrudes upward beyond its lateral guide walls and guide webs and thus with thicker stapled material, i.e. if the staple is not fully driven in, an operative connection can be established with the upper part of the stapler and can thus be manually stapled in.
the spring attached to the butt knife is tensioned by pressing on the upper part independently of the pawl, and at the end of the tensioning process the pawl, which until then has been locked in a constant position, is pivoted sideways downwards by continued pressure on the upper part, so that the pusher knife is released and penetrates into the material under the action of the spring tension.
the spring is designed so that the staple material of common thickness penetrates and the ends of the staple are bent. If, in exceptional cases, the material to be stapled is thicker, the stapling process is continued after the clip has been driven in using the spring force by manual pressure on the upper part and the stapled material is thus stapled in again.
the spring force for driving in the clip and bending the clip ends can thus be designed for the usual thickness of stapled material, so that the majority of the stapling operations can also be carried out with little effort with regard to the spring tension to be overcome by the user. At the same time, however, it is possible to connect thicker stacks of stapled goods by manually pressing the top part. Due to the optimal design of the spring, in conjunction with the arrangement and design of the pawl according to the invention, which only serves as a holding element, the tension of the spring attached to the impact knife and the release of the pawl can be achieved by a uniform, low force.
the stapler according to the invention can thus be used in a variety of ways with the simplest handling.
Fig. 2 makes it clear that the effort required for a stapling process with a stapler according to the invention is significantly less and the force curve is uniform, i. H. is without force peaks.
the release mechanism 3 and equipped with the release mechanism according to the invention consists of the base plate 10, at one end of which there are side parts 11 and the other end with a Die 12 is equipped.
a magazine 20 for receiving the clips is connected to the side parts 11 of the base plate 10 by an axis 13.
the magazine 20 consists of a central channel 21, which is capable of receiving, guiding and pushing the clip strips into a position from which a single clip G at the strip end can be detached.
the magazine 20 also has guide walls 22 with guide webs 23.
the guide webs 23 lie above the release position of the central channel 21 and are essentially perpendicular to it.
the guide webs receive a vertically displaceable butt knife 24, the downward movement of the butt knife with its lower surface 54 separating the clip G which is in the release position from the clip strip, driving it into the material to be stapled and pressing on the clip G until the ends thereof are permanent are deformed by the die 12 of the base plate 10.
an upper part 30 which serves to transmit the force exerted by the user to the magazine 20 and the impact knife 24.
a spring 14 is provided between the base plate 10 and the magazine 20 in order to pull the magazine back after a stapling process has been completed.
a return spring 25 for the upper part 30 is arranged between the magazine 20 and the upper part 30 and is wound around an axis 26 in the exemplary embodiment.
the stapler has a release mechanism, consisting of one with pins 41; 42 spring 40 attached to the upper part 30.
the rear end of the spring 40 is held by a lock 43 in the magazine 20 and by the pin 41.
the front end of the spring 40 is mounted in an opening 44 provided in the knife 24 on the knife 24.
a device for temporarily locking the butt knife 24 in the position shown in FIG. 3, in which the lower surface 54 of the butt knife 24 is located above the clamp G to be separated is further provided.
this device consists of a pawl 45, which is attached by an axis to the front guide walls 22 of the magazine 20 with a hinge.
the pawl 45 is provided with two projections 48; 49 provided, which are provided in openings 50; 51 fit. If the projections 48; 49 in the respective openings 50; 51, they lock the butt knife 24 in its upper position above the clamp G regardless of the degree of tension of the spring 40.
the upper part 30 is provided with a nose 52 which exerts pressure on the upper free end 53 of the pawl 45 when the upper part is moved downwards.
FIGS. 5-A to 5-F The function of the locking and release mechanism described above with reference to FIG. 3 is described below with reference to FIGS. 5-A to 5-F, in which a complete stapling process is shown in the various working stages.
Fig. 5-A the stapler is in the rest position.
the spring 40 is not under tension.
the projections 48; 49 of the pawl 45 which is tensioned by the torsion spring 47, are located in the openings 50; 51 of the knife 24 so that the knife is held over the bracket G.
the nose 52 of the upper part 30 does not touch the free end 53 of the pawl 45.
Fig. 5-B the stapling process has been initiated by pressing on the front end of the upper part 30. With the return spring 25, the upper part 30 presses the magazine 20, not shown here, down to the material to be stapled.
the butt knife 24 is held by the pawl 45 in a substantially fixed position with respect to the clip G to be released. This position is maintained from the end of the stapling process (Fig. 5-A) until the next stapling process is triggered (Fig. 5-D; Fig. 5-E). In this essentially static locking position, the lower surface 54 of the impact knife 24 remains above the clamp G.
the designation "essentially static” excludes the possibility of small changes in position of the impact knife 24, which are caused by deviations and movements of the other parts of the Stapler are caused, not from. This applies in particular to the movement of the projections 48; 49 when they are in the corresponding openings 50; 51 penetrate or be pulled out of them.
the force to be exerted when the stapler is actuated is limited in practice to the tensioning of the torsion spring 40, and the force required for the movement of the return spring can be neglected.
the effort required by the user is completely independent of the characteristics of the clip, e.g. B. the force required to detach the clips from the clip strip or to deform the clip ends.
Fig. 2 the force required for the movement of the upper part 30 is shown graphically, it being noted that the force to be applied, in contrast to staplers which work without spring force (cf. Fig. 1), is approximately constant, i.e. the pulse-like force curve of conventional devices or force peaks cannot be recorded. In contrast to FIG. 1, the graphical representation according to FIG. 2 is not representative of the forces acting on the clamps.
the magazine 20 receives the staple strips in a slide rail which is located on the upper part of the device.
the invention can also be applied to other staplers of conventional type, for example staplers whose staple strips have been inserted into a fixed, ie non-extendable, feed rail in the lower part of the magazine after the upper part has been detached from the lower part has been.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Portable Nailing Machines And Staplers (AREA)
Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)

EP19910113962 1990-12-05 1991-08-21 Handbetriebenes Heftgerät Expired - Lifetime EP0489229B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
ES9003139		1990-12-05
ES9003139A ES2027154A6 (es)	1990-12-05	1990-12-05	Procedimiento de engrapado con sufridera y engrapadora correspondiente.

Publications (3)

Publication Number	Publication Date
EP0489229A2 EP0489229A2 (de)	1992-06-10
EP0489229A3 EP0489229A3 (en)	1992-07-22
EP0489229B1 true EP0489229B1 (de)	1993-08-11

Family

ID=8269967

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19910113962 Expired - Lifetime EP0489229B1 (de)	1990-12-05	1991-08-21	Handbetriebenes Heftgerät

Country Status (4)

Country	Link
EP (1)	EP0489229B1 (es)
JP (1)	JPH04269182A (es)
DE (1)	DE59100289D1 (es)
ES (1)	ES2027154A6 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB9124499D0 (en) *	1991-11-19	1992-01-08	Ofrex Group Holdings Plc	Improvements in or relating to a stapling machine
US6918525B2 (en) *	2003-05-23	2005-07-19	Worktools, Inc.	Spring energized desktop stapler
EP1778441A4 (en) *	2004-07-23	2009-04-22	Joyce Michael P	SPRING-MOUNTED STAPLER
JP4830476B2 (ja) *	2005-12-16	2011-12-07	マックス株式会社	ステープラ
EP1829648A1 (en) *	2006-03-02	2007-09-05	Chun Yuan Chang	Stapling device
WO2007129416A1 (ja) *	2006-05-09	2007-11-15	E-Top Corporation	ステープラ
CA2943806C (en)	2014-03-27	2022-05-31	Techtronic Power Tools Technology Limited	Powered fastener driver and operating method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2154755A (en) *	1936-11-19	1939-04-18	Fastener Corp	Stapling machine
FR1103854A (fr) *	1954-07-06	1955-11-08	Anciens Etablissements J B Vid	Cloueuse avec dispositif de frappe automatique
US4463890A (en) *	1981-12-22	1984-08-07	Henry Ruskin	Staplers
JPS6218378U (es) *	1985-07-17	1987-02-03
SE456660B (sv) *	1987-03-03	1988-10-24	Isaberg Ab	Anordning vid ett verktyg foer indrivning av ett faestelement, exempelvis en haeftklammer, i ett foeremaal
GB2229129A (en) *	1989-03-15	1990-09-19	Ted Szu Chang	Hand-operated stapler

1990
- 1990-12-05 ES ES9003139A patent/ES2027154A6/es not_active Expired - Lifetime
1991
- 1991-08-21 DE DE9191113962T patent/DE59100289D1/de not_active Expired - Lifetime
- 1991-08-21 EP EP19910113962 patent/EP0489229B1/de not_active Expired - Lifetime
- 1991-12-04 JP JP32023591A patent/JPH04269182A/ja active Pending

Also Published As

Publication number	Publication date
EP0489229A2 (de)	1992-06-10
ES2027154A6 (es)	1992-05-16
EP0489229A3 (en)	1992-07-22
DE59100289D1 (de)	1993-09-16
JPH04269182A (ja)	1992-09-25

Legal Events

Date	Code	Title	Description
1992-04-24	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1992-06-04	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1992-06-10	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB IT SE
1992-07-22	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE FR GB IT SE
1992-10-28	17P	Request for examination filed	Effective date: 19920901
1992-12-02	17Q	First examination report despatched	Effective date: 19921022
1993-06-25	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1993-08-11	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB IT SE
1993-09-15	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19930816
1993-09-16	REF	Corresponds to:	Ref document number: 59100289 Country of ref document: DE Date of ref document: 19930916
1993-10-08	ET	Fr: translation filed
1993-10-19	ITF	It: translation for a ep patent filed	Owner name: DE DOMINICIS & MAYER S.
1994-06-11	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1994-06-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1994-08-03	26N	No opposition filed
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 91113962.4
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2009-08-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: IT Payment date: 20090624 Year of fee payment: 19
2009-11-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20090526 Year of fee payment: 19 Ref country code: GB Payment date: 20090812 Year of fee payment: 19 Ref country code: SE Payment date: 20090807 Year of fee payment: 19
2011-03-29	EUG	Se: european patent has lapsed
2011-04-27	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20100821
2011-05-20	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST Effective date: 20110502
2011-05-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100821
2011-06-22	REG	Reference to a national code	Ref country code: DE Ref legal event code: R119 Ref document number: 59100289 Country of ref document: DE Effective date: 20110301
2011-07-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100831 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110301
2011-08-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100821
2011-09-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20090909 Year of fee payment: 19
2012-09-28	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100822

Publication	Publication Date	Title
DE3115792C2 (de)	1984-04-19	Chirurgisches Gerät zum Abbinden von Gefäßen o.dgl.
DE2704224C3 (de)	1980-03-13	Klammermagazin zum Ansetzen an ein Heftwerkzeug
DE19506942B4 (de)	2006-08-03	Antriebsvorrichtung für eine Nagelmaschine
EP0119542A1 (de)	1984-09-26	Nageleintreibgerät
DE2221723C3 (de)	1981-05-14	Muskelkraftbetriebenes tragbares Heftwerkzeug, insbesondere für Heftklammern, Nägel o.dgl.
DE602004011392T2 (de)	2009-01-08	Anti-stau-heftklammerhalteschiene für heftklammern
DE2914794A1 (de)	1979-10-25	Chirurgischer hefter sowie darin verwendbare chirurgische heftklammer
DE2712294A1 (de)	1977-11-24	Vorrichtung an werkzeugen zum eintreiben von befestigungsmitteln
EP0216218B1 (de)	1991-05-02	Kraftbetriebenes Einschlaggerät, insbesondere für Heftklammern
DE4001883C2 (de)	1996-05-30	Hefter
DE2248161C3 (de)	1978-08-24	Heftwerkzeug
EP0109493A2 (de)	1984-05-30	Heftgerät
DE3038565C2 (de)	1986-11-13	Heftapparat
EP0489229B1 (de)	1993-08-11	Handbetriebenes Heftgerät
DE69312856T2 (de)	1998-02-05	Werkzeug zum eintreiben spitzer befestigungselemente in objekte
DE3038616C2 (de)	1986-06-19	Heftapparat
DE3048465A1 (de)	1981-09-17	Werkzeug zum eintreiben von heftnaegeln oder heftklammern in einen rahmen, speziell bilderrahmen
DE69812851T2 (de)	2004-03-04	Heftvorrichtung
EP2794190B1 (de)	2018-01-10	Eintreibvorrichtung
EP0321440B1 (de)	1992-08-26	Verfahren und Vorrichtung zum Eintreiben von Nägeln
DE1197055B (de)	1965-07-22	Heftwerkzeug
DE69204967T2 (de)	1996-02-08	Heftmaschine.
EP0127853B1 (de)	1986-10-01	Klammermagazin für ein manuell oder motorisch angetriebenes Klammergerät
EP0191848A1 (de)	1986-08-27	Kombigerät zum heften und lochen von blättern insbesondere aus papier
DE2607161A1 (de)	1976-11-11	Heftapparat