EP0487544A1 - Brieflocher. - Google Patents
Brieflocher.Info
- Publication number
- EP0487544A1 EP0487544A1 EP90910696A EP90910696A EP0487544A1 EP 0487544 A1 EP0487544 A1 EP 0487544A1 EP 90910696 A EP90910696 A EP 90910696A EP 90910696 A EP90910696 A EP 90910696A EP 0487544 A1 EP0487544 A1 EP 0487544A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure lever
- bearing
- punch according
- letter punch
- rear edges
- 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
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 230000000994 depressogenic effect Effects 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract 3
- 238000007906 compression Methods 0.000 abstract 3
- 210000005069 ears Anatomy 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/32—Hand-held perforating or punching apparatus, e.g. awls
- B26F1/36—Punching or perforating pliers
Definitions
- the invention relates to a letter punch with a lower part, a pressure lever pivotally mounted on the side walls of the lower part and acting on the punch on the lower part, acting against the restoring force of a spring pressure lever, the pressure lever being bent laterally downwards with its rear edge has a rear edge of the Sowange ⁇ scissors overlapping bearing tabs.
- the object of the invention is to improve the known letter punch of the type mentioned at the outset in such a way that a risk of injury is avoided even if the punch is used improperly.
- the rear edges of the bearing flaps and the side walls protrude in the entire pivoting range of the pressure lever by at least a finger width above their current crossing point, so that the shear angle when the pressure lever is actuated is between 80 and 180 ° and when the pressure lever is actuated between 50 and 110 ° is that the side cheeks and / or the Lagerlappe ⁇ are rounded in the area of their rear edges and have a smooth lubricious surface coating and that the distance between the pressure lever and the lower part is at least finger width when the pressure lever is actuated.
- the scissor angle should decrease by less than 25 ° when actuating the pressure lever.
- the rear edges of the bearing flaps and / or the side cheeks have a smooth, convex, preferably circular outer contour and if the scissor angle and / or the Cross point remain approximately constant over the entire swivel distance of the pressure lever.
- the distance between the pressure lever and the lower part is at least twice the finger width when the pressure lever is actuated.
- the side cheeks in the region of their rear edges, have stop fingers engaging behind the bearing flaps, the upper end faces of which, which form a stop for the depressed pressure lever, face one another and are convex from their outer side on the side of the bearing flap have inward and downward curved surface contours, which advantageously merge in their lower region into mutually facing, inward and downward sloping surfaces.
- Figure 1 is a side view of a punch with variable scissor angle.
- FIG. 3 is a perspective rear view of a punch
- FIG. 4 shows a section of the overlap area between the side cheek and the bearing tab of the punch according to FIG. 1.
- the letter punch shown in the drawing essentially consists of a lower part 10 and a pressure lever 16 which can be pivoted on side walls 12 of the lower part 10 about an axis 14 between two end positions.
- the pressure lever 16 has two laterally bent sides, the adjacent side walls 12 on the outside overlapping bearing tabs 18, whose rear, obliquely downward-facing edges 20 align with the rear edges 22 of the adjacent side cheeks 12 in a crossing point K, including one after at the rear, divergent scissors angle o (cut.
- the crossing point K is displaced more or less along the inclined path 22 and the scissors angle ⁇ X changed more or less.
- a circular contour of the edge 20 coaxial with the axis of rotation 14 ensured that both the crossing point K and the scissor angle c remain constant when the pressure lever is depressed.
- the side walls 12 and bearing flaps 18, which consist of sheet metal, have a surface coating 32, 34 of high lubricity which is formed by powder coating and is applied so thickly that they are in the edge region 20 of the bearing flap 18 leads to a rounding.
- the obliquely aligned embossing flank 36 which is produced in the course of the stamping process on the sheet metal edge of the bearing tab 18, makes a further contribution to the rounding.
- a stop finger 24 engages behind the bearing flaps 18, the upper end faces 26 of which form a stop for the depressed pressure lever 16.
- the end faces 26 have mutually facing surface contours which are convexly curved downward from their outer edge 28 on the bearing flap and which merge in the lower region into mutually facing, oblique surfaces 30 pointing downwards.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Automatic Assembly (AREA)
- Sheet Holders (AREA)
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT90910696T ATE102114T1 (de) | 1989-08-14 | 1990-07-06 | Brieflocher. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3926837 | 1989-08-14 | ||
| DE3926837 | 1989-08-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0487544A1 true EP0487544A1 (de) | 1992-06-03 |
| EP0487544B1 EP0487544B1 (de) | 1994-03-02 |
Family
ID=6387096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90910696A Expired - Lifetime EP0487544B1 (de) | 1989-08-14 | 1990-07-06 | Brieflocher |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0487544B1 (de) |
| CN (1) | CN1025302C (de) |
| DD (1) | DD297110A5 (de) |
| DE (1) | DE59004829D1 (de) |
| ES (1) | ES2051020T3 (de) |
| WO (1) | WO1991002634A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH271950A (de) * | 1949-02-25 | 1950-11-30 | Styner & Bienz Ag | Locher. |
| DE2032518C3 (de) * | 1970-07-01 | 1973-10-25 | Fa. Louis Leitz, 7000 Stuttgart | Brieflocher |
| DE3225776C2 (de) * | 1982-07-09 | 1986-06-12 | Carl Manufacturing Co., Ltd., Tokio/Tokyo | Locher |
| DE3704670A1 (de) * | 1987-02-14 | 1988-08-25 | Leitz Louis | Brieflocher |
-
1990
- 1990-07-06 ES ES90910696T patent/ES2051020T3/es not_active Expired - Lifetime
- 1990-07-06 WO PCT/EP1990/001092 patent/WO1991002634A1/de not_active Ceased
- 1990-07-06 DE DE90910696T patent/DE59004829D1/de not_active Expired - Lifetime
- 1990-07-06 EP EP90910696A patent/EP0487544B1/de not_active Expired - Lifetime
- 1990-08-14 DD DD90343441A patent/DD297110A5/de not_active IP Right Cessation
- 1990-08-14 CN CN90106951A patent/CN1025302C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9102634A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0487544B1 (de) | 1994-03-02 |
| DE59004829D1 (de) | 1994-04-07 |
| DD297110A5 (de) | 1992-01-02 |
| WO1991002634A1 (de) | 1991-03-07 |
| CN1025302C (zh) | 1994-07-06 |
| ES2051020T3 (es) | 1994-06-01 |
| CN1049471A (zh) | 1991-02-27 |
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