EP1841600B1 - Self-inking stamp - Google Patents

Description

The invention relates to a self-inking stamp with a stamp housing in which a stamp-type aggregate, which is coupled with an adjustable relative to the punch housing actuating bow, slidably and at the same time pivotally mounted by 180 °, and with a connected to the operating bracket by latching handle, as Hollow body is designed with a cover, wherein the hollow body has an inner tube part which is displaceable upon actuation of the actuating bracket against the force of a spring along a tube part connected to the punch housing.

From the WO 90/02657 A is a self-inking of the aforementioned type is known in which the punch handle is connected to an operating handle either by means of screws or with the aid of locking hooks. The handle itself is designed as a hollow body, wherein in its interior a pipe part is formed as a guide sleeve, in which a sleeve or pipe part which is mounted on the punch housing, telescopically inserted when the operating handle together with the handle on the one hand and the punch housing on the other hand when using the Stamps are moved relative to each other. Within the pipe or sleeve parts, a spring is arranged, which presses apart the two components, namely the operating handle with the handle on the one hand and the punch housing on the other hand, so as to hold the operating handle relative to the punch housing in a non-operating position or rest position. In the case of the locking connection of the handle with the operating handle, the latching hooks of the handle are mounted on the underside thereof and inserted directly through holes in the upper transverse part or web of the actuating bar, wherein they are latched behind the opening edge. However, this latching connection is relatively unsafe, since the latching hook can be worn and canceled due to the leverage effect with frequent actuation of the stamp. In practice, therefore, this latching has not really been able to prevail, and it was usually provided a screw or attachment under plastic deformation of a plugged pin. The disadvantage here, however, the increased effort during assembly, and also be through the openings in the operating bracket plugged through, felt at the bottom or inside protruding parts of the handle as annoying and unpleasant.

A self-inking stamp of a different type, albeit with a latching connection in the region of the actuating yoke, is in the WO 96/16816 A revealed. Specifically, an outer plastic frame is here arranged above the metallic actuating bow, the legs of which bound together with the legs of the actuating bracket receiving spaces for coil springs, which are supported on a bottom wall of a stamp housing belonging to the receiving frame. The actuating bow and the surrounding him outside plastic frame are connected by means of a separate pin which is inserted through an opening in the web of the actuating bracket and locked inside a handle formed integrally with the plastic frame handle. This stamp design is thus quite expensive and expensive, as regards the production of the items and their assembly.

It is an object of the invention to remedy this situation and provide a Selbstfärbestempel with a locking of the handle with the operating handle, on the one hand a secure connection of the handle is achieved with the operating handle, on the other hand, if necessary, a slight release of the handle is possible and also the Appearance of the stamp is not affected by protruding latching or mounting hardware on the operating handle.

To solve this problem, the invention provides a self-inking as defined in claim 1. Particularly advantageous embodiments and further developments are specified in the subclaims.

In the technique of the invention, the position of the locking connection of the handle with the operating bracket is moved from directly to the transverse part of the actuating bracket in the interior of the handle, so that upon actuation of the punch due to the short lever length, a small load is exerted on the joint. Furthermore, the latching connection elements can be made comparatively solid inside the handle, and Therefore, the locking connection can also have a long life and multiple puncture actuations survive unscathed. Moreover, it is advantageous that the locking elements are hidden inside the handle, so that the appearance of the punch is not affected by any protruding parts on the operating handle. Nevertheless, access to the detents is readily possible when the cover is removed from the handle. This cover is usually snapped onto the remaining handle body. If access to the locking elements in the interior of the handle is made possible by removing the cover, and the engaging locking elements can be easily detached from each other, so that the handle can be easily removed from the operating part of the hand stamp. This can be used to selectively replace the handle, such as when a different handle is desired, eg, a handle with a soft outer handle coating, a larger handle, or a fundamentally different shaped handle, eg, rather than a more head-shaped handle, a more cylindrical handle.

The provided on the operating handle, protruding from him, hollow extension is preferably tubular, and it is, however, to optimally guide in the case of a self-inking stamp with actuation of the type unit upstanding from the punch housing tube or sleeve part, when the operating bracket and the punch housing relative to each other can be moved, record the extension of the pipe part on the punch housing, the helical compression spring, which is provided to push the operating handle away from the punch housing. The extension can also be closed at its upper end facing away from the die housing by a - possibly perforated - wall, so that the spring can be supported on the inside of this wall.

The extension can have a latching recess as a latching element, in which a latching projection engages the inner tube part of the handle. Also, a simple latching projection may be provided on the extension as a latching element. For a stable latching connection, which is nonetheless easily solvable, however, at least one resiliently deflectable latching tongue is advantageously provided as latching element on the extension. This latching tongue may be formed integrally with the extension, wherein they on their facing away from the punch housing upper end with the extension is firmly connected, while her the punch housing facing lower, freed end forms a radially outwardly projecting locking projection. In this way, a particularly stable connection of the handle is ensured with the operating handle, in which a particularly high resistance to unintentional removal of the handle is made possible by the operating handle.

The latching projection may have a bevel on the side remote from the engagement surface, in order to press the latching tongue over the inclined surface gradually resiliently inwardly upon pushing the handle on the extension until the latching projection snaps back behind the edge of the pipe part. The locking projection is then in the mounted position, e.g. at a remote from the die housing latching surface of the inner tube part of the handle, wherein further preferably provided that the locking surface of the tubular member is formed by an edge of a detent recess or recess in the pipe part. Instead, it would also be conceivable that the tube part simply ends in the region of the latching tongue, so that the upper edge of the tube part forms the latching surface as a counterpart to the latching tongue with latching projection on the extension. Characterized in that the pipe part continues beyond the extension and, e.g. However, an increased stability of the structure is achieved by having two latching niches or latching recesses for preferably two diametrically opposite latching elements or latching tongues. A particularly stable, fixed design is further made possible when the pipe part is closed on the side facing away from the punch housing upper side by an end wall. This end wall of the pipe part can rest in the mounted position on the wall terminating the extension. However, if such a closure wall is not provided, the end wall of the pipe part may rest at least on the end face of the tubular extension. In this case, the end wall of the pipe part form the support surface for the provided inside the helical compression spring.

Preferably, the components carrying the latching elements, that is to say in particular the extension or the actuating bracket carrying the extension, likewise consist of the handle hollow body, plastic, in particular acrylonitrile-butadiene-styrene copolymer (ABS) or polyoxymethylene (POM).

As already mentioned, two diametrically opposed latching elements are preferably provided on the extension on the one hand and on the other hand, in particular in the form of edges of latching windows or slots, on the inner tube part.

For manufacturing reasons on the one hand and strength reasons on the other hand, it is finally of particular advantage when the operating bar is provided in two parts, wherein an inner bracket part made of plastic forms a receptacle for an outer bracket part made of metal, and wherein the outer metal strap part in its connecting the stirrup leg a Has passage opening for the extension, which is connected to the inner bracket part, preferably in one piece.

• Die Fig. 1 und 2 schaubildliche Ansichten eines Selbstfärbestempels mit einem mehrere Typenbänder aufweisenden Stempelaggregat von zwei verschiedenen Seiten;
• Fig. 3 eine Seitenansicht dieses Selbstfärbestempels;
• Fig. 4 in einer auseinander gezogenen Darstellung die wesentlichen Komponenten eines solchen Selbstfärbestempels;
• Fig. 5 eine schaubildliche, auseinander gezogene Darstellung der Teile eines zweiteiligen Betätigungsbügels und eines zweiteiligen Griffs eines solchen Selbstfärbestempels;
• Fig. 6 einen Längsschnitt durch den Selbstfärbestempel gemäß Fig. 1 bis 4, mit einem zweiteiligen Betätigungsbügel gemäß Fig. 5;
• Fig. 7 einen Schnitt durch den Griff des Stempels gemäß der Linie VII-VII in Fig. 6; und
• Fig. 8 einen Schnitt durch den oberen Teil des Griffs ähnlich der Schnittdarstellung in Fig. 6, jedoch in einem demgegenüber vergrößerten Maßstab.

The invention will be explained below with reference to particularly preferred embodiments, to which it should not be limited, and with reference to the drawings. In detail in the drawing:

• The Fig. 1 and 2 perspective views of a self-inking stamp with a multi-type bands stamping unit from two different sides;
• Fig. 3 a side view of this self-inking stamp;
• Fig. 4 in an exploded view of the essential components of such self-inking stamp;
• Fig. 5 a diagrammatic, exploded view of the parts of a two-part operating handle and a two-part handle of such self-inking stamp;
• Fig. 6 a longitudinal section through the self-inking stamp according to Fig. 1 to 4 , with a two-part operating handle according to Fig. 5 ;
• Fig. 7 a section through the handle of the stamp according to the Line VII-VII in Fig. 6 ; and
• Fig. 8 a section through the upper part of the handle similar to the sectional view in Fig. 6 but in an enlarged scale on the other hand.

In the Fig. 1 to 4 By way of example, a self-inking stamp 1, which is conventional per se in terms of its basic construction and function, is provided with an over-striking coloration, with a turning mechanism 2 for a stamp type unit 3. The type unit 3 is in a formed of two parts 4A, 4B punch housing 4 by means of an actuating bracket 5 up and down and moved 180 ° from one in the Fig. 1 . 2 and 4 starting upper rest position starting in the stamp types (in Fig. 1 to 4 not apparent, cf. but Fig. 5 ) abut an ink pad impregnated with stamping ink in a load-shaped container 6 which can be pushed in and out in the stamp housing 4, and can be moved to a lower, turned-over impression position. The turning mechanism 2 is of a known type, see. for example the US Pat. No. 1,401,436 A or US 4 432 281 A , And has swing-shaped, pivotally mounted at the upper end turning parts 7 with a curved control slot 8 for a turn axis 9. This turning axis 9 extends in the assembled state through a base part 10 of the type unit 3, see. except Fig. 4 also Fig. 8 ; Furthermore, the turning axis 9 extends through longitudinal slots 11 and 11A, 11B (s. Fig. 4 ) of the stamp housing 4, and it is fixed by means of bush-shaped axle securing parts 12 in legs 13 of the actuating bracket 5. The turning parts 7 are pivotally mounted with pins 14 in bores 15 (or 15A, 15B) of the punch housing 4, and they carry inner pins 16, which for turning the type unit 3 in its downward movement by means of the bracket 5 and the turning axis 9 in lateral Guide grooves 17 of the type unit 3 engage, see. also Fig. 5 ,

The actuating bracket 5 is in a conventional manner by means of a spring 18, in particular a helical compression spring, which is supported on the upper side of the punch housing 4, in his in the Fig. 1 to 3 shown upper rest position, and he is against the force of this spring 18 relative to the punch housing 4 downwardly movable. The spring 18 is received in a tubular part 19, which extends into a at the top of the actuating bracket 5, at the transverse part or web 20, mounted handle 21, wherein the handle 21 and the tube member 19 are telescoped in the operation of the punch 1. This will, as well as the latching connection means for the handle 21, hereinafter referred to the Fig. 5 to 8 will be explained in more detail.

On the punch housing 4 is further an angled formed text viewing window 22 with a relatively large front surface 22A and an upper deck surface 22B attached, wherein in the upper deck surface 22B, a slot-shaped recess 22C is provided to the viewing window 22 when mounting the die housing 4, in particular by Snapping with the help of a lower, inwardly projecting locking bar 23 (s. Fig. 4 ), in spite of the pipe part 19 to postpone, the pipe part 19, as best of Fig. 2 can be seen, is received in the mounted position in this recess 22C. Out Fig. 4 Furthermore, a comparably angled formed, provided with an upper, rear slot text card 24 can be seen, this text card 24 a comparatively large footprint - on the front and at the top - for attaching appropriate information on the stamp imprint etc. offers. The Textkärtchen 24 can be placed when mounted in the viewing window 22 under rest on the Rastleitse 23 and fixed together with this on the punch housing upper part 4B under support at the top and latching the locking bar 23 with a cross bar 25 of the punch housing upper part 4B.

Out Fig. 1 Finally, a push-button ratchet 26 on the bracket 5 can be seen, which cooperates with notches 27 on the tube part 19 in order to fix the actuating bracket 5 in a predetermined position relative to the punch housing 4, as is known per se.

Similar to the stamp housing 4, the actuating bow 5 consists of two superimposed parts, namely an upper or outer, metallic, in view U-shaped bracket part 5A and a lower or inner, made of plastic Ironing part 5B, which has not only formed a receptacle 26 'for the push-button 26 at its upper web portion 20B, but also carries on its upper side a tubular extension 70 which at its upper end, ie the upper end facing away from the punch housing 4, by a Wall 71 is completed with a central opening 72. This extension 70 is provided with two diametrically opposed locking elements 73, which are in the form of locking tongues 74, each with a provided on the freely projecting lower end, outwardly projecting locking projection 75, are formed, see. except Fig. 5 and 6 especially Fig. 8 ,

The tubular extension 70 protrudes in the assembled state of the operating bracket 5, that is, when the metallic upper part 5A of the operating bracket 5 is pushed onto the lower part 5B, through an opening 76 in the upper web portion 20A of the metallic bracket part 5A and into the interior of the hollow body 21st 'executed handle 21, s. except Fig. 5 especially Fig. 6 , The lower bracket part 5B made of plastic is provided on its front side and on its rear side with the metallic upper bracket part 5A encompassing guide rails 77 which ensure a receptacle 78 for a tight fit of the upper bracket part 5A at the lower bracket part 5B and also the sharp edges of the metallic upper Cover bracket part 5A in the manner of a fairing.

In the in Fig. 6 as well as in Fig. 7 shown mounted position, the locking elements 73 on the extension 70 cooperate with corresponding locking elements 79 in the form of upwardly facing locking surfaces 80 of the handle 21, said locking surfaces 80, the edges of diametrically opposed latching niches or recesses 81 (s. Fig. 5 and 6 ) in an inner tube part 82 of the handle 21. This pipe part 82 is further on its as shown in FIG Fig. 5 to 8 upper side, which faces away from the punch housing 4, closed by an end wall 83. This end wall 83 is in the mounted position, as in Fig. 6 . 7 and 8th shown on the upper wall 71 of the extension 70 and thus additionally stabilizes this handle attachment.

As then in particular from the Fig. 5 and 8th it can be seen, the handle 21 except the actual handle-hollow body 21 'with a latched cover 84, wherein locking strips 85 on the upper end face of the hollow body 21' with an outer bead-shaped, unspecified in the drawing locking projection in a conventional manner snap into a corresponding groove 86 in the wall of the cover 84. The cover 84 has a flat front side 87, see FIG. Fig. 5 and 7 , with which it is guided along the tubular part 82. For this can be a direct attachment, as in Fig. 7 may be provided, but it can also be provided a conventional per se tongue and groove guide, wherein from Fig. 5 a corresponding guide groove 88 on the tube part 82 can be seen. Such a tongue and groove guide, with the guide groove 88, facilitates the placement and snapping the cover 84 on the hollow body 21 '. Nevertheless, the cover 84 can be easily removed by pushing up from the hollow body 21 ', whereby access to the interior of the handle-hollow body 21' and thus provided to the locking elements 73, so that these locking elements 73 can be pressed radially inwardly to the Detent engagement on the edge-locking surfaces 80 of the tubular member 82 to solve and so the handle 21 and its hollow body 21 'to remove from the operating bracket 5 can. In this way, although an extremely stable latching connection between the handle 21 and bracket 5 is achieved by means of the latching elements described, the handle 21 is easily and conveniently removed and replaced, for example, with another handle, such as with a different shape and / or surface ,

How far out Fig. 5 and 7 it can be seen, the tube member 82 may be connected in the interior of the handle-hollow body 21 'with the latter via at least substantially radial stiffening webs 89, which extend approximately star-shaped in plan view. The two are preferred in Fig. 5 visible front webs 89, however, off-center and parallel to the front 87 of the cover 84 is provided.

The lower bracket part 5B together extension 70 is preferably as well as the handle-hollow body 21 'together with inner tube part 82 made in one piece as an injection molded part, wherein as a plastic material, for example Acrylonitrile-butadiene-styrene copolymer (ABS), but optionally also polyoxymethylene (POM) or a similar plastic material can be used.

To support the spring 18 at the top, in the interior of the handle 21, it would of course also conceivable, instead of the upper wall 71 and the additionally supporting end wall 83, a web cross or the like. Provide. The end wall 83 can be omitted in principle at all. The tube part 82 could then be formed as a pipe socket, whose upper end face defines an all-round upper edge 80 as a latching element 79. Theoretically, it is also conceivable to interchange the latching elements 73 and 79 in functional terms, i. elastically deformable latching elements on the tube part 82 and rigid to provide cooperating with this locking surfaces or locking recesses on the extension 70. Furthermore, it is of course also possible to provide a one-piece bracket 5, in particular made of plastic, possibly also of metal. The shape of the handle 21 may be in addition to the shown flattened truncated cone shape also e.g. be cylindrical, spherical, etc.

The axle securing parts 12 may for example be injection molded from polyoxymethylene (POM) or a comparable comparatively hard, resilient plastic material, and they support the turning axis 9 rotatably in the operating part or operating bracket 5, thereby securing the turning axis 9 against accidental pushing out of the punch 1 and moreover, hold the temple parts 5A and 5B against each other, so that the ends of the temple parts 5A, 5B are not unintentionally spread apart. At the top of the actuating bracket 5 whose parts are 5A, 5B, with the web portions 20A, 20B, held together by the fact that the handle 21, more precisely, the hollow body 21 ', rests with its underside on the metal web 20A, if he his tube part 82 is snapped on extension 70 of the plastic strap part 5B.

Claims (12)

1. A self-inking stamp with a stamp housing (4) in which a stamp type unit (3), which is coupled to an actuating bow (5) that is displaceable relative to the stamp housing (4), is mounted so as to be displaceable and at the same time pivotable by 180°, and with a handle (21) connected to the actuating bow (5) by snap-in engagement, which handle is designed as a hollow body (21') having a cover (84), the hollow body (21') having an inner tubular member (82) which, when the actuating bow is actuated against the force of a spring (18), is displaceable along a tubular member (19) connected to the stamp housing (4), characterized in that a projecting hollow extension (70) is provided on the actuating bow (5), which extension, in the mounted position, extends into the hollow body (21) of the handle and guides the tubular member (19) connected to the stamp housing (4), and which has at least one snap-in element (73) which, in the mounted position, is engaged with a corresponding snap-in element (79) on the inner tubular member (82) of the handle (21).
2. The self-inking stamp according to claim 1, characterized in that the extension (70) is tubular.
3. The self-inking stamp according to claim 1 or 2, characterized in that the extension (70) carries, as snap-in element (73), at least one resiliently deflectable snap-in tongue (74).
4. The self-inking stamp according to claim 3, characterized in that, at its upper end facing away from the stamp housing (4), the snap-in tongue (74) is fixedly connected to the extension (70), whereas its lower, clear end forms a radially outwardly projecting snap-in projection (75).
5. The self-inking stamp according to claim 4, characterized in that in the mounted state, the snap-in projection (75) abuts on a snap-in surface (80) of the inner tubular member (82) of the handle (21), which snap-in surface (80) faces away from the stamp housing (4).
6. The self-inking stamp according to claim 5, characterized in that the snap-in surface (80) of the tubular member (82) is formed by a rim of a snap-in niche or recess (81).
7. The self-inking stamp according to claim 6, characterized in that the tubular member (80) is closed by a front wall (83) provided on its upper side facing away from the stamp housing (4).
8. The self-inking stamp according to claim 7, characterized in that, in the mounted state, the front wall (83) of the tubular member (82) abuts the front side of the extension (70).
9. The self-inking stamp according to any one of claims 1 to 8, characterized in that the extension (70) is closed by a wall (71) on its upper end which faces away from the stamp housing (4).
10. The self-inking stamp according to any one of claims 1 to 9, characterized in that the extension (70) just like the hollow body (21) of the handle is made of a synthetic material, e.g. ABS.
11. The self-inking stamp according to any one of claims 1 to 10, characterized in that the actuating bow (5) is provided in two parts, an inner bow part (5B) made of a synthetic material forming a seat (78) for an outer bow part (5A) made of metal, the outer bow part (5A) made of metal having a passage opening (76) provided in its web (78), which interconnects the bow legs, for passage of the extension (70) which is connected to the inner bow part (5B), preferably integrally connected.
12. The self-inking stamp according to any one of claims 1 to 11, characterized in that the hollow extension (70) has two oppositely arranged snap-in elements (73).

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