EP0707925A1 - Couteau à lame échangeable tel que couteau d'ébavurage de pièces en matière plastique ou analoques - Google Patents
Couteau à lame échangeable tel que couteau d'ébavurage de pièces en matière plastique ou analoques Download PDFInfo
- Publication number
- EP0707925A1 EP0707925A1 EP95112339A EP95112339A EP0707925A1 EP 0707925 A1 EP0707925 A1 EP 0707925A1 EP 95112339 A EP95112339 A EP 95112339A EP 95112339 A EP95112339 A EP 95112339A EP 0707925 A1 EP0707925 A1 EP 0707925A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- slide
- extension
- clamping groove
- knife
- 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
Links
- 230000004323 axial length Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 description 2
- 208000011092 Hand injury Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B5/00—Hand knives with one or more detachable blades
Definitions
- the invention relates to a knife with interchangeable blade, such as deburring knife for plastic parts or the like. According to the preamble of claim 1.
- a knife has become known from DE 37 40 036 C2.
- the known knife with interchangeable blade which is mainly used as a deburring knife for plastic parts, has a grip body, the front grip area of which has an undercut clamping groove with a trapezoidal cross section.
- the edges of the clamping groove pointing outwards run parallel to one another.
- the clamping groove bottom rises from the front free end of the front grip area to the rear, so that wedge-shaped clamping groove side surfaces are present.
- a slide with parallel longitudinal edges is inserted from the front into this clamping groove, which has mutually identical trapezoidal cross sections over its axial length.
- the knife blade is received between the clamping groove base and the slider base facing the latter. By moving the slide further to the rear, the interchangeable blade is dragged backwards by frictional engagement and jammed as a result of the continuously decreasing clamping groove height.
- the front grip area forms a freely projecting clamping extension with a trapezoidal cross-section, on which the rear end is slipped with the slide which sits an undercut clamping groove with a trapezoidal cross-section
- the clamping groove base area and the latter facing the clamping extension base area form the clamping gap between them
- a very large clamping force can be applied according to the invention in that the clamping extension and the clamping groove continuously taper towards their front free ends, such that the width of the clamping groove and, correspondingly, the width of the clamping extension, decrease continuously towards the front free ends of the slide and the clamping extension .
- the clamping is also secured by self-locking.
- Another peculiarity of the knife according to the invention is that both the groove height and the height of the clamping extension decrease from the back to the front. In this way, a clear, almost tapered construction of the blade holder is achieved.
- An essential embodiment of the invention is that the slide is closed in a ring shape at least in its axial area.
- the slide is expediently ring-shaped by means of a web which is connected in its rear region and bridges the clamping groove and is integrally connected closed, which projects according to further features of the invention away from the clamping groove and is designed as a slide handle. Due to the fact that the slide is closed in an annular manner, the annular flow of force ensures that the lateral areas of the slide with the groove side surfaces cannot yield to the outside.
- the base of the clamping groove and the base of the extension of the extension are made to be excessively long compared to the axial length of the interchangeable blade, such that the interchangeable blade can be completely received and clamped in an axially retracted position within the clamping gap.
- the deburring knife according to the invention therefore allows a secure position of the interchangeable blade within a protective space formed by the clamping gap, so that hand injuries can be avoided in the event that the knife is carried in the work clothing when not in use.
- the slide has at least one locking arm which projects from its rear end to the rear and can be locked in the front grip area with axial movement space.
- This arrangement is the Slider held captive on the front grip area. The assembly is done in a simple manner by snap assembly. At the same time, the locking arm receives an axial movement space, so that the clamping and releasing function of the slide is ensured despite the fact that it cannot be lost.
- a deburring knife is generally designated by the reference number 10.
- the deburring knife 10 has an elongated handle 11 with a front grip area 12, from which a clamping extension 13 projects forward.
- a slider 15 having a clamping groove 14 is slipped onto the clamping extension 13.
- Clamping extension 13 and slider 15 together serve to clamp an interchangeable blade 16.
- the front grip area 12 (cf. FIG. 5) has a freely projecting clamping extension 13 with a trapezoidal cross section that continuously tapers towards its free end 17 .
- the slide 15 is attached on the clamping extension 13, with its rear end 18 ahead.
- the slide 15 has a clamping groove 14 with a trapezoidal cross-section which tapers continuously towards its free front end 20.
- clamping groove base surface 19 and the clamping extension base surface 21 facing the latter, on the one hand, and both clamping groove side surfaces 22 and both clamping extension side surfaces 23, on the other hand, extend parallel to one another.
- the clamping groove width BN and the clamping groove height HN and, correspondingly, the width BF and the height HF of the clamping extension 13 decrease continuously towards the free ends 20, 17 of the slide 15 and the clamping extension 13 (see also FIG. 8).
- the clamping gap SP is reliably delivered in parallel.
- a very secure clamping lock of the infeed position is brought about in that the clamping groove width BN and the clamping extension width BF decrease continuously towards the free ends 20 and 17. This is exemplified by the bottom view 7 of the clamping extension 13 according to FIG. 7 using the wedge angle ⁇ indicated there.
- the wedge angles ⁇ are dimensioned so that self-locking is ensured in the clamping position.
- the slide 15 is closed in an annular manner by means of a web 25, which is arranged in its rear region and bridges the clamping groove 14 transversely and integrally connected.
- the web 25 projects transversely upward away from the clamping groove 14 and at the same time forms handling surfaces 26, 27 for the actuation of the slide 15.
- the clamping groove base surface 19 and the clamping extension base surface 21 are formed to be axially longer than the axial length of the interchangeable blade 16.
- the slide 15 has a latching arm 28, which on the upper side forms an interchangeable blade guide surface 29 which is flush with the clamping groove base surface 19. In this way, the possibility is created that the interchangeable blade 16 is pushed back axially within the clamping gap SP Protective position is completely recordable and clampable.
- the slide 15 has a viewing opening 31 which breaks through the slide wall 30 in the region of the clamping groove base area 19.
- the locking arm 28 can be deflected transversely to the longitudinal central axis x of the knife 10 and has a hammer-head-shaped locking end 32 which can be locked with an axial movement space 35 into a locking groove 34 having axial stops 33 in its front end.
- the slider 15 can be mounted in a simple manner by means of plug-on mounting and is held captively.
- the clamping groove base surface 19 and the clamping extension base surface 21 each have a centrally arranged, axially extending groove-like incision 36 each with an approximately semicircular cross section for receiving the round shaft 37 shown in cross section in FIG. 9 of a round shaft deburring blade 38.
- Such round shaft deburring blades 38 are known, for example, from DE-GM 86 18 646.
- the insertion end of the round shaft 37 has an annular groove 39.
- a plate-shaped adapter 40 with the same cross section of the interchangeable blade 16 is inserted into the clamping gap SP between the clamping groove base 19 and the clamping extension base 21.
- the plate-shaped adapter 40 has, in a central arrangement, an adapter slot 42 which is aligned with the two groove-like incisions 36 and is open towards the front and undercut in the axial direction by centering projections 41.
- the centering projections 41 engage laterally in the annular groove 39.
- the rear end face 50 of the plate-shaped adapter 40 abuts against the rear stop 49 at the axial end of the locking groove base surface 48.
- the front end face 51 of the adapter 40 is flush with the front free end 17 of the clamping extension 13.
- the assembly of the arrangement shown in FIGS. 9 and 10 proceeds as follows: The round shaft 37 is inserted into the adapter slot 42 from above, so that the centering projections 41 can engage in the annular groove 39. This arrangement is then inserted from the front into the open clamping gap SP, after which the slide 15 is displaced in the sliding direction z.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knives (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4435807A DE4435807C1 (de) | 1994-10-07 | 1994-10-07 | Messer mit Wechselklinge, wie Entgratemesser für Kunststoffteile od. dgl. |
| DE4435807 | 1994-10-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0707925A1 true EP0707925A1 (fr) | 1996-04-24 |
| EP0707925B1 EP0707925B1 (fr) | 1998-04-22 |
Family
ID=6530151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95112339A Expired - Lifetime EP0707925B1 (fr) | 1994-10-07 | 1995-08-05 | Couteau à lame échangeable tel que couteau d'ébavurage de pièces en matière plastique ou analoques |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5647132A (fr) |
| EP (1) | EP0707925B1 (fr) |
| DE (1) | DE4435807C1 (fr) |
| ES (1) | ES2117336T3 (fr) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4435807C1 (de) * | 1994-10-07 | 1995-05-24 | Beermann Kg Martor Argentax | Messer mit Wechselklinge, wie Entgratemesser für Kunststoffteile od. dgl. |
| AU2001229361A1 (en) * | 2000-01-14 | 2001-07-24 | Stx Llc. | Golf club having replaceable striking surface attachments and method for replacing same |
| US6543140B1 (en) * | 2000-07-05 | 2003-04-08 | Adco Industries | Utility knife having improved blade carrier structure and method of manufacture thereof |
| DE10325214A1 (de) * | 2003-06-04 | 2004-12-30 | Martor Kg | Messer |
| US20060118998A1 (en) * | 2004-12-07 | 2006-06-08 | Kenneth Meacham | Putter-type club head with an insert and method of manufacturing |
| US20080153619A1 (en) * | 2006-11-21 | 2008-06-26 | Tucker Richard B C | Golf Club Having A Cam-Locked Insert |
| US8250764B2 (en) | 2007-04-16 | 2012-08-28 | Adco Industries-Technologies, L.P. | Adjustable utility knife |
| US8201336B2 (en) | 2008-05-02 | 2012-06-19 | Olympia Tools International, Inc. | Retractable utility knife |
| US8793881B2 (en) | 2008-08-15 | 2014-08-05 | Stanley Black & Decker, Inc. | Utility knife with blade lock |
| US8695221B2 (en) | 2008-08-21 | 2014-04-15 | Wen Hao | Utility knife with extended travel carriage |
| US8056241B2 (en) * | 2008-10-13 | 2011-11-15 | ADCO Industries—Technologies, L.P. | Utility cutter |
| US8307556B2 (en) * | 2009-06-19 | 2012-11-13 | ADCO Industries—Technologies, L.P. | Utility cutter |
| US8782909B1 (en) | 2013-02-12 | 2014-07-22 | ADCO Industries—Technologies, L.P. | Utility cutter |
| US9630328B2 (en) * | 2014-06-25 | 2017-04-25 | Benchmade Knife Co., Inc. | Folding tool adapted for simple assembly and disassembly |
| USD941653S1 (en) * | 2020-05-15 | 2022-01-25 | Slice, Inc. | Deburring tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3439419A (en) * | 1967-12-01 | 1969-04-22 | Sterling Plastics Co | Knife with slidable blade sheathed and selectively clampable in handle |
| DE2716861A1 (de) * | 1976-04-30 | 1977-11-17 | Stanley Mabo | Schneidvorrichtung |
| FR2352641A1 (fr) * | 1976-05-26 | 1977-12-23 | Gimel Bargeon & Cie | Couteau de poche a lame coulissante a ouverture et fermeture automatiques |
| EP0048077A1 (fr) * | 1980-09-12 | 1982-03-24 | Okada Kogyo Kabushiki Kaisha | Couteau à lame remplaçable |
| US4748743A (en) * | 1987-01-12 | 1988-06-07 | Anderson Lloyd E | Utility knife with improved blade locking feature |
| DE3740036C2 (fr) | 1987-11-26 | 1989-10-26 | Martor-Argentax E. H. Beermann Kg, 5650 Solingen, De |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB292879A (en) * | 1928-02-14 | 1928-06-28 | Arthur Vivian Thomas Tarr | Improvements in holders for safety razor blades and the like |
| US1861363A (en) * | 1931-07-01 | 1932-05-31 | Scheuner Charles | Quick detachable handle for tools |
| GB415606A (en) * | 1933-10-27 | 1934-08-30 | Joseph Archibald Gardner | Improvements relating to knives |
| DE8618646U1 (de) * | 1986-07-11 | 1986-09-11 | Noga Egineering Ltd., Nahariyya | Klingenhalter für ein Entgratungswerkzeug |
| DE4435807C1 (de) * | 1994-10-07 | 1995-05-24 | Beermann Kg Martor Argentax | Messer mit Wechselklinge, wie Entgratemesser für Kunststoffteile od. dgl. |
-
1994
- 1994-10-07 DE DE4435807A patent/DE4435807C1/de not_active Expired - Fee Related
-
1995
- 1995-08-05 EP EP95112339A patent/EP0707925B1/fr not_active Expired - Lifetime
- 1995-08-05 ES ES95112339T patent/ES2117336T3/es not_active Expired - Lifetime
- 1995-10-05 US US08/539,766 patent/US5647132A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3439419A (en) * | 1967-12-01 | 1969-04-22 | Sterling Plastics Co | Knife with slidable blade sheathed and selectively clampable in handle |
| DE2716861A1 (de) * | 1976-04-30 | 1977-11-17 | Stanley Mabo | Schneidvorrichtung |
| FR2352641A1 (fr) * | 1976-05-26 | 1977-12-23 | Gimel Bargeon & Cie | Couteau de poche a lame coulissante a ouverture et fermeture automatiques |
| EP0048077A1 (fr) * | 1980-09-12 | 1982-03-24 | Okada Kogyo Kabushiki Kaisha | Couteau à lame remplaçable |
| US4748743A (en) * | 1987-01-12 | 1988-06-07 | Anderson Lloyd E | Utility knife with improved blade locking feature |
| DE3740036C2 (fr) | 1987-11-26 | 1989-10-26 | Martor-Argentax E. H. Beermann Kg, 5650 Solingen, De |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4435807C1 (de) | 1995-05-24 |
| US5647132A (en) | 1997-07-15 |
| EP0707925B1 (fr) | 1998-04-22 |
| ES2117336T3 (es) | 1998-08-01 |
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