EP0487545A1 - Rastvorrichtung für anschlagschienen in brieflochern. - Google Patents
Rastvorrichtung für anschlagschienen in brieflochern.Info
- Publication number
- EP0487545A1 EP0487545A1 EP90910714A EP90910714A EP0487545A1 EP 0487545 A1 EP0487545 A1 EP 0487545A1 EP 90910714 A EP90910714 A EP 90910714A EP 90910714 A EP90910714 A EP 90910714A EP 0487545 A1 EP0487545 A1 EP 0487545A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- stop rail
- locking device
- latching
- foot parts
- 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
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 latching device for a stop rail which is displaceably arranged in a lower hole part and provided with a plurality of latching recesses at a distance from one another, with a spring arranged on the hole bottom part and a spring which bears against the stop rail under tension under the action of the spring from below the locking recesses releasably lockable locking member.
- the stop rail facilitates the precise punching of paper without prior center folding.
- the latching positions of the stop rail are assigned to different paper formats.
- the positional accuracy of the perforation essentially depends on the fact that the stop rail engages reliably and without play in its locking positions.
- a known latching device for perforators which meets high demands on the positioning accuracy, consists of three parts, a hollow cylindrical holding part that can be anchored to the lower part of the perforator, a compression spring arranged in the cylinder and one that passes through a cylinder opening under the action of the compression spring Locking ball.
- the manufacture and assembly of the known latching device has proven to be too expensive, especially for simpler holes.
- the invention is based on the object of a latching device of the type specified at the beginning To develop a type that is easy to manufacture and assemble and that nevertheless ensures that the stop rail snaps into place without play and therefore guarantees a high positioning accuracy.
- the invention is based on the idea that a one-piece locking spring made of flexible material, which can be made free of play with its locking element in the direction of displacement of the stop rail, is very easy to manufacture and, by suitable design measures, also high demands on the positioning - Accuracy of the stop rail is sufficient.
- a one-piece spring clip made of flexible material which consists of a spring bar that is convex to the side of the stop rail and has a centrally formed detent cam and two ends of the spring arranged one behind the other in the direction of displacement of the stop rail ⁇ webs on the opposite side to the stop rail bent at mirror-inverted angles, with their free ends on the lower part of the punch fixed and tilt-proof spring legs.
- convex does not necessarily mean a convex curvature.
- the fe- the web can rather also have two flat flanks which are bent in the middle at a obtuse-angled roof-like manner on a bending line running transversely to the direction of displacement.
- the locking cam is advantageously arranged centrally on the bending line of the spring bar.
- the spring legs are aligned essentially parallel to one another.
- the free ends of the spring legs are bent on mutually opposite sides of the foot section on bending lines running transversely to the direction of displacement of the stop rail.
- the spring legs and the foot parts expediently enclose an essentially right angle with one another.
- the outward-facing broad sides of the foot parts can be supported against a bottom abutment surface of the lower part of the punch, while the spring clip with the free edges of the foot parts can be clamped in the lower part of the punch with pre-tension between shoulders facing one another in the direction of displacement of the stop rail.
- the foot parts on their upper side facing the spring legs can be positively overlapped by a cover part rigidly connected to the hole lower part.
- the cover parts can be integrally formed on a cover housing which can be snapped into the lower part of the hole and which engages over the detent spring and the cover rail.
- Fig. 2 is a side view of the detent spring of FIG. 1 in two Biege eine ⁇ .
- the spring clip 10 shown in the drawing is intended for use in a letter punch and serves there as a detent spring for a stop rail 14 provided with a plurality of spacing-apart locking recesses 12.
- the spring clip 10 consists essentially of a spring bar 16, two the front ends of the spring web on the bending line 18 to the side opposite the stop rail, bent parallel to each other essentially parallel spring legs 20, one each on bending lines 22 on opposite sides of the spring legs 20 outwardly bent foot parts 24 and one in the middle arranged on the spring bar, designed as a bulge, which can be snapped into the locking recesses 12 of the stop rail 14.
- the spring bar 16 has two flat flanks 16 ', 16''which are bent at an obtuse angle to one another at a central bending line 28.
- the spring clip 10 is supported with the downward-facing broad side surfaces of its foot parts 24 against a bottom-side abutment surface 30 of the perforated lower part 32 and lies beneath the free edges of the foot parts 24 Prestress against opposing shoulders 34 in the lower part of the punch. So that the spring clip 10 cannot be accidentally pulled out of its clamping between the shoulders 34, the foot parts 24 are positively overlapped on their upper side by a cover part 36 of a cover housing rigidly connected to the hole punch lower part 32.
- the spring clip 10 can be easily inserted into the housing 32 from the outside under prestress.
- the pretension does not permit any longitudinal movement and, as a result, causes the stop rail 14 to engage in its displacement direction without play.
- the spring web is bent downward by a spring travel d, while at the same time the two spring legs are bent symmetrically outward by the same spring travel e. This ensures that the locking cam 26 performs a pure vertical movement without lateral deflection.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Details Of Cutting Devices (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT90910714T ATE95461T1 (de) | 1989-08-14 | 1990-07-06 | Rastvorrichtung fuer anschlagschienen in brieflochern. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3926835 | 1989-08-14 | ||
| DE3926835 | 1989-08-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0487545A1 true EP0487545A1 (de) | 1992-06-03 |
| EP0487545B1 EP0487545B1 (de) | 1993-10-06 |
Family
ID=6387094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90910714A Expired - Lifetime EP0487545B1 (de) | 1989-08-14 | 1990-07-06 | Rastvorrichtung für anschlagschienen in brieflochern |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0487545B1 (de) |
| JP (1) | JPH04503633A (de) |
| KR (1) | KR920700861A (de) |
| CN (1) | CN1019769B (de) |
| DD (1) | DD297108A5 (de) |
| DE (1) | DE59003033D1 (de) |
| ES (1) | ES2045936T3 (de) |
| WO (1) | WO1991002635A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602315C (de) * | 1934-09-06 | Soennecken Fa F | Locher mit einstellbarer Anschlagschiene | |
| CH342930A (de) * | 1955-08-08 | 1959-12-15 | Leitz Fa Louis | Papierlocher mit verstellbarem Seitenanschlag |
| US3714857A (en) * | 1970-09-09 | 1973-02-06 | Swingline Inc | Punch |
| DE2219178A1 (de) * | 1972-04-20 | 1973-10-25 | Kraut & Meienborn | Schriftgutlocher |
-
1990
- 1990-07-06 KR KR1019910701522A patent/KR920700861A/ko not_active Ceased
- 1990-07-06 JP JP2510664A patent/JPH04503633A/ja active Pending
- 1990-07-06 DE DE90910714T patent/DE59003033D1/de not_active Expired - Fee Related
- 1990-07-06 EP EP90910714A patent/EP0487545B1/de not_active Expired - Lifetime
- 1990-07-06 WO PCT/EP1990/001093 patent/WO1991002635A1/de not_active Ceased
- 1990-07-06 ES ES90910714T patent/ES2045936T3/es not_active Expired - Lifetime
- 1990-08-14 DD DD90343439A patent/DD297108A5/de not_active IP Right Cessation
- 1990-08-14 CN CN90106971A patent/CN1019769B/zh not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9102635A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04503633A (ja) | 1992-07-02 |
| DD297108A5 (de) | 1992-01-02 |
| KR920700861A (ko) | 1992-08-10 |
| WO1991002635A1 (de) | 1991-03-07 |
| ES2045936T3 (es) | 1994-01-16 |
| CN1019769B (zh) | 1992-12-30 |
| DE59003033D1 (de) | 1993-11-11 |
| EP0487545B1 (de) | 1993-10-06 |
| CN1049472A (zh) | 1991-02-27 |
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