WO2004091923A1 - Stamp and reversing mechanism for a stamp - Google Patents

Abstract

The invention relates to a self-inking stamp with a top ink pad, which comprises two structures (SOC1, SOC2), one disposed on top of the other and both slidably mounted in a trigger element (AUS). The invention also relates to a reversing mechanism for a self-inking stamp with a top ink pad, especially for a stamp with two structures (SOC1, SOC2), one disposed on top of the other. Said mechanism comprises a stamp insert (EIN1, EIN2) and a trigger element (AUS) which encircles the structure (SOC1, SOC2) with two lateral limbs (AU1, AU2) guided at the narrow faces thereof. Said trigger element can be displaced towards the area of contact against an elastic force. Reversing axes (ACH) of the stamp insert (EIN1, EIN2) are mounted in the lateral limb ends of the trigger element and extend through the lateral faces of the structure (SOC1, SOC2) in straight guide slots (SFU). Stationary control cams (KUR) are mounted in the structure (SOC1, SOC2) on its narrow faces and a transmission element (GET) facing the narrow faces is disposed at a distance to the reversing axes (ACH) of the insert. Said transmission element interacts with the control cam (KUR) during the reciprocating movement of the stamp insert (EIN1, EIN2). The transmission element (GET) consists of a center pin (ZAP) and two rounded-off, concave recesses (GV1, GV2) disposed laterally thereof. A control cam (KUR) consists of two stops (ANS1, ANS2) having a rounded-off, convex contour, being disposed one on top of the other and adjacent to the guide slot (SFU) and being separated from each other by a recess or void (VER). The transmission element (GET), in the area of interaction with the control cam (KUR), is designed in such a manner that in an area between the two stops (ANS1, ANS2), the pin (ZAP), during the rotation of the stamp insert (EIN1, EIN2) and following a downward movement, first makes an upward movement which is then followed by a downward movement leading to the position of stamping.

Description

 STAMP AND REVERSE MECHANISM FOR A STAMP

The invention relates to a self-inking stamp with overlap staining, the stamp consisting of at least one base which can be placed on the surface to be stamped and which receives an ink pad lying opposite the attachment surface, and of a base arranged in the base and which can be moved back and forth between the ink pad and the attachment surface with simultaneous turning, the pressure plate or the like carrying stamp insert, as well as a release element which grips the base with two side legs guided on its narrow side walls and can be displaced towards the contact surface against spring force, in the side leg ends of which the reversible axes of the stamp insert passing through the narrow side walls of the base are mounted in straight guide slots , whereby fixed control cams are arranged in the base on its narrow side walls and a gear element facing the narrow side walls is arranged on the punch insert at a distance from the turning axes thereof, which gear element is connected to the control curve on the and movement of the stamp insert cooperates, the gear element consisting of a central pin and two rounded concave recesses arranged on the side thereof, and a control cam consisting of two superimposed, adjacent to the guide slot stops with a rounded, convex contour, which has a recess or exemption are separated from each other.

Usually the contour corresponds to the deepening in the. Essentially the outer contour of the stops.

A stamp mentioned at the outset is known, for example, from EP 1 152899 B1.

A disadvantage of such known stamps is that only a stamp impression can be generated with them.

It is an object of the invention to provide a stamp with which two (different) stamp impressions can be produced.

This object is achieved with a stamp mentioned at the outset in that, according to the invention, the stamp has two bases arranged one above the other, both of which are displaceably mounted in the release element.

By turning the stamp over, n different stamp impressions can be created. So that optimal operation of such a stamp is given for two stamp impressions and soiling of the hands of a user is reliably avoided, means are provided on the stamp for blocking the relative movement of a base relative to the actuating element.

In a specific embodiment, the means consist of a cover which surrounds the base in such a way that movement of the base relative to the release element is prevented. The respective cover element must be removed for actuation so that a relative movement is possible and the stamp plate can touch the surface to be stamped.

In another embodiment, the means is a bolt which is slidably mounted in the release element between two positions, movement of the base relative to the release element being blocked by the bolt in one position and movement being possible in the other position. With this variant, the user does not have to worry about which cover to remove. On the other hand, such reliable protection against dirt as with a cover is not possible.

It is particularly simple if the bolt is moved between its two positions by means of gravity.

A turning mechanism known for example from EP 1 152 899 B1 can be used to turn the stamp inserts. As can be seen from this document, in particular FIG. 2, gear means are attached to a stamp insert. This gear means consist of a central pin which is laterally delimited by two recesses. Both the pin and the depressions have a circular contour and interact with a control cam when the plunger is actuated.

This control curve consists of two stops with a circular contour which are arranged one above the other in the direction of movement of the stamp insert and which merge into one another via a depression with a likewise circular contour.

When the stamp is actuated, the stamp insert is initially moved straight down until the upper stop is moved into the recess on the stamp set. When the stamp insert moves further, it now rolls on the upper insert, so that the stamp insert begins to rotate around its turning axes guided in guide slots. As a result, the central pin engages in the recess, which connects the two stops forming the control cam, and the stamp set now rolls around the pin engaging in the recess until the stamp insert is finally turned through 180 ° and is then moved straight to the stamp position.

In such an arrangement, an imaginary center point of the pin describes - if one only considers the component of the movement directed parallel to the guide rail - a constantly downward movement.

A disadvantage of such a stamp, however, is that a relatively large amount of travel is required for turning the stamp insert in the vertical direction, which therefore also necessitates a certain overall height of the stamp.

In order to require less installation space than such a previously known turning mechanism, it is further provided that the gear element in its area interacting with the control cam is designed in such a way that in a region between the two stops of the pins during the rotary movement of the stamp insert, following a downward movement for the time being again executes an upward movement, which is followed by a downward movement leading to the tempering position.

Due to the design of the gear means according to the invention, the center point of the pin briefly describes an upward movement again during the downward and rotary movement of the stamp insert, which means that, in contrast to conventional stamps, less installation space is required for the rotary movement and the stamp can thus be manufactured with a lower overall height.

This effect according to the invention is achieved particularly well if the central pin in its front region, which interacts with the control cam, consists of two converging legs with an essentially rectilinear contour.

In order to allow smooth sliding off, it is provided that the straight legs merge into one another at the tip over a rounded area.

It is also favorable if the straight legs intersect at an angle of about 60 ° - 90 °.

In order on the one hand to allow the gear element to slide smoothly along the control curve and on the other hand to require the smallest possible installation space for the movement, the following measures are either taken on their own or in combination: x) the central pin has a smaller width than the diameter of the turning axis and it has an extension bounded by two parallel legs and parallel to the guide rail, which is in a leg guide parallel to the guide rail (= guide slots) in the narrow side walls the base is guided;

x) the rounded, concave depressions have a smaller diameter than the diameter of the turning axes;

x) the center point of the turning axis lies in a starting position in the direction of movement behind a connecting axis of the center points of the two depressions.

Furthermore, in the sense mentioned above, it is also expedient if the stops forming the control curve have a circular contour, both stops essentially have the same circular radius, and the distance between the two center points of the stops is essentially four times their radii.

In order to further improve the kinematics, it is advantageous if the width of the pin corresponds approximately to the diameter of the depression.

It is also favorable for optimal movement if the contour of the depressions essentially forms a semicircle.

In order to allow a rotational movement, the leg guide has a recess for the rotational movement of the pin in the region of the control curve.

The invention further relates to a turning mechanism for a self-inking stamp with overlap staining, the stamp consisting of at least one base which can be placed on the surface to be stamped and which receives an ink pad lying opposite the attachment surface, and of a base arranged in the base between the ink pad and the attachment surface with simultaneous turning - Movable, the pressure plate or the like. Carrying stamp insert, as well as a trigger element which grips the base with two side legs guided on its narrow side walls and can be displaced towards the contact surface against spring force, in the side leg ends of which the turning side axes of the stamp insert penetrating the narrow side walls of the base in straight guide slots are mounted, fixed control cams being arranged in the base on its narrow side walls and a gear element facing the narrow side walls arranged on the punch insert at a distance from the turning axes thereof, which s with the control curve for the back and forth movement supply of the stamp insert interacts, the gear element consisting of a central pin and two rounded, concave recesses arranged on the side thereof, and a control cam consisting of two superimposed, adjacent to the guide slot stops with a rounded, convex contour, which has a recess or exemption from each other are separated.

The contour of the depressions usually corresponds essentially to the outer contour of the stops.

A stamp mentioned at the outset is known, for example, from EP 1 152899 B1. As can be seen from this document, in particular FIG. 2, gear means are attached to a stamp insert. These gear means consist of a central pin which is laterally delimited by two recesses. Both the pin and the depressions have a circular contour and interact with a control cam when the plunger is actuated.

This control curve consists of two stops with a circular contour which are arranged one above the other in the direction of movement of the stamp insert and which merge into one another via a depression with a likewise Foeis-shaped contour.

When the stamp is actuated, the stamp insert is initially moved straight down until the upper stop is moved into the depression on the stamp insert. When the stamp insert moves further, it now rolls on the upper insert, so that the stamp insert begins to rotate around its turning axes guided in guide slots. As a result, the central pin engages in the recess, which connects the two stops forming the control cam, and the stamp insert now rolls around the pin that engages in the recess until the stamp insert is finally rotated through 180 ° and then in a straight line into the stamp position is moved.

In such an arrangement, an imaginary center point of the pin describes - if one only considers the component of the movement directed parallel to the guide rail - a constantly downward movement.

A disadvantage of such a stamp, however, is that a relatively long path is required for turning the stamp insert in the vertical direction, which therefore also requires a certain overall height of the stamp. Since it is an endeavor to usually design stamps as handily as possible, and an excessively high overall height, even when the stamp is placed on a base, makes this unstable, an excessive overall height of the stamp is disadvantageous.

It is an object of the invention to provide a turning mechanism for a stamp which requires less installation space in the stamp direction than previously known turning mechanisms.

This object is achieved with a turning mechanism mentioned at the outset in that, according to the invention, the gear element is designed in its area interacting with the control cam in such a way that in an area between the two stops of the pins, when the punch insert rotates, an upward movement is initially carried out following a downward movement , which is followed by a downward movement leading to the stamp position.

Due to the design of the gear means according to the invention, the center point of the pin briefly describes an upward movement again during the downward and rotary movement of the stamp insert, which means that, in contrast to conventional stamps, less installation space is required for the rotary movement and the stamp can thus be manufactured with a lower overall height.

This effect according to the invention is achieved particularly well if the central pin in its front region, which interacts with the control cam, consists of two converging legs with an essentially rectilinear contour.

In order to allow smooth sliding off, it is provided that the straight legs merge into one another at the tip over a rounded area.

It is also favorable if the straight legs intersect at an angle of about 60 ° - 90 °.

In order on the one hand to allow the gear element to slide smoothly along the control cam and on the other hand to require as little installation space as possible for the movement, the following measures are either taken on their own or in combination:

x) the central pin has a smaller width. on than the diameter of the turning axis and it has a rearward bounded by two parallel legs to which Guide rail parallel extension, which is guided in a parallel to the guide rail (= guide slots) leg guide in the narrow side walls of the base;

x) the rounded, concave depressions have a smaller diameter than the diameter of the turning axes;

x) the center point of the turning axis lies in a starting position in the direction of movement behind a connecting axis of the center points of the two depressions.

Furthermore, in the sense mentioned above, it is also expedient if the stops forming the control curve have a circular contour, both stops essentially have the same circular radius, and the distance between the two center points of the stops is essentially four times their radii.

In order to further improve the kinematics, it is advantageous if the width of the pin corresponds approximately to the diameter of the depression.

It is also favorable for optimal movement if the contour of the depressions essentially forms a semicircle.

In order to allow a rotational movement, the schericle guide has a recess in the region of the control curve for the rotational movement of the pin.

Furthermore, the invention relates to a stamp with at least one base and a trigger element displaceable relative to this and a stamp insert rotatably mounted in the trigger element.

In order to enable a low overall height of the stamp, the stamp according to the invention has a turning mechanism described above.

In one embodiment, the stamp has two bases, which are arranged one above the other and are mounted so as to be displaceable relative to the trigger element and in the latter.

This results in a stamp with which two different stamp impressions can be generated. So that optimal operation of such a stamp is given for two stamp impressions and soiling of the hands of a user is reliably avoided, means are provided on the stamp for blocking the relative movement of a base relative to the actuating element.

In a specific embodiment, the means consist of a cover which surrounds the base in such a way that movement of the base relative to the release element is prevented. The respective cover element must be removed for actuation so that a relative movement is possible and the stamp plate can touch the surface to be stamped.

In another embodiment, the means is a bolt which is displaceably mounted in the release element between two positions, movement of the base relative to the release element being blocked by the bolt in one position and movement being possible in the other position. With this variant, the user does not have to worry about which cover to remove. On the other hand, such reliable protection against dirt as with a cover is not possible.

It is particularly simple if the bolt is moved between its two positions by means of gravity.

The invention is explained in more detail below with reference to the drawing. In this show

1 is a perspective view of a double stamp,

2 shows a stamp according to FIG. 1 with the cap removed on one side,

3 shows an exploded drawing of a stamp according to FIGS. 1 and 2,

4 shows an even more detailed exploded view of the stamp,

5 shows a vertical section through a stamp parallel to the wider side walls,

6 shows a section along the line A-A according to FIG. 5,

7 shows a section along the line B-B according to FIG. 5,

8 shows a section along the line CC according to FIG. 5, 9 shows a section through a stamp in the area of the turning mechanism with the stamp set in its initial position,

10 - FIG. 14 further sections through a stamp in the area of the turning mechanism in different stages of movement of the stamp insert,

15a and 15b are schematic views of a gear element according to the prior art

Technology,

16a and 16b are schematic views of a transmission element according to the invention, and

17 shows a section through a further stamp with locking mechanisms for the movement of the stamp inserts.

Figures 1-4 show a hand stamp STE according to the invention, which - as will be explained in more detail below - is a double stamp, i.e. around a stamp with which two generally different impressions can be created.

The functioning of the stamp is explained in more detail below using a likewise new turning mechanism for the stamp inserts. This mechanism has the advantage that the stamp can be made with a lower overall height, which is particularly important in terms of operability and stability in the case of a double stamp. In principle, however, a turning mechanism known from the prior art can also be used.

The turning mechanism according to the invention for a stamp plate, which is also to be explained in more detail below, is particularly suitable for such a double punch, since the turning height allows the overall height to be kept lower than in the turning mechanisms known from the prior art. Nevertheless, it is expressly pointed out at this point that the invention is not restricted to a double stamp and can also be used with a conventional stamp with only one stamp plate or stamp insert, as a result of which this can also be manufactured with a lower overall height than known stamps.

If one looks at FIG. 1, one can essentially see two covers ABI, AB2, and a trigger element AUS, which form the housing of the stamp STE. In FIG. 2, the lower cover AB2 is removed; when the cover ABI is actuated, the trigger AUS is pushed down on a base SO2, as a result of which the turning mechanism for the lower stamp insert is actuated and this is moved into the stamp position. The trigger element AUS encompasses the narrow side walls of the base SOCl, SOC2 with two side legs AU1, AU2 and can be moved towards the mounting surface against spring force.

In the arrangement according to FIG. 2, the double stamp functions like a conventional single stamp. In principle, the representation according to FIG. 2 also represents a conventional single stamp, in which, as a rule, only the cover ABI is formed in one piece with the trigger element AUS, since a cover ABI is not necessary with such a stamp. Naturally, the stamp insert and turning mechanism in the upper area are naturally also missing.

If the upper stamp plate is to be used for a stamp impression, only the upper cover ABI has to be removed, the stamp has to be turned over and placed accordingly on the surface to be stamped, and the trigger element AUS has to be actuated by pressing the attached cover AB2.

In addition to the function of actuating a turning mechanism, the cover element ABI, AB2 also serves as protection against the actuation of the second turning mechanism (or in the case of non-use or transport, also against the actuation of both turning mechanisms) and any contamination of the user which may result therefrom ,

In Figure 4, the stamp STE is shown in an even more detailed representation. In addition to the components already explained, two stamp inserts EIN1, EIN2 can be seen. These inserts EIN1, EI 2 are rotatably supported via axles ACH in corresponding recesses ANE in the trigger element AUS, so that when the trigger element AUS moves downward they are displaced relative to the corresponding base SOCl, SOC2, but are free for a reversing movement.

The turning mechanism according to the invention now consists, on the one hand, of corresponding control cams in the bases SOCl, SOC2, and corresponding gear elements on the stamp inserts EIN1, EBNT2, which slide off when actuated in the assigned control cams and lead to a turning of the insert by 180 °. In the vertical cross section through the stamp according to FIG. 5, the two pillow drawers LAD1, LAD2 for the stamp pads KIS1, KIS2, and the stamp inserts EIN1, EIN2 with the stamp plates PLA1, PLA2 can also be seen, the stamp shown in the rest position of the stamp STE Stamp plates PLA1, PLA2 are in contact with the cushions KIS1, KIS2. The pillow drawers or stamp pads can be easily replaced via side opening slots OS1, OS2 in the bases SOCl, SOC2 with the cover ABI, AB2 removed (see Fig. 4).

When the plunger is actuated, the upper base SOCl (SOC2) is pressed against a pressure spring FED which is in contact with the lower base SOC2 (SOCl) and, when the plunger is relieved, moves it back into its starting position as shown in FIG. 5.

By actuating the stamp, the lower base SOC2 is thus practically displaced relative to the trigger element AUS. In this trigger element AUS, as already discussed, the stamp insert EIN1, EJN2 is rotatable via axes ACH, but fixed against lateral movement with respect to the trigger element. The axes ACH penetrate the base SOCl, SOC2 on its narrow side walls in guide slots SFU, and the stamp insert engages with corresponding gear elements in the area of these axes in control cams in the bases, which lead to a turning of the stamp insert.

An essential aspect of the invention now consists in the turning mechanism for a single or a double stamp, which leads to a turning of the stamp insert. As can be seen from FIGS. 6-8, which show sections along the lines AA, BB and CC from FIG. 5, the double stamp has a mirror-symmetrical structure, in the illustration only the lower cover cap is removed, so that only the lower stamp insert EIN2 is rotated when actuated and pressed against the base to be stamped, while the upper stamp insert EIN1 is not rotated and remains in its position relative to the upper base SOCl.

If one now considers FIG. 6, the turning mechanism according to the invention consists of a control curve KUR, which is arranged on the two narrower side walls of the base SOC2. In the following, for the sake of simplicity, only the lower, "active" area is referred to, but the considerations also apply analogously to the upper area of the stamp. The control curves KUR are attached to both narrow sides of the base SOC2, but in principle it is also sufficient if such a control cam is only arranged on one side. However, guiding and turning the stamp insert can be done much better with two such curves and corresponding gearboxes. elements can be realized, as tilting of the stamp insert is then reliably prevented.

The control curve KUR is essentially formed from two stops ANSI, ANS2, which lie vertically one above the other and are separated from one another by an exemption or depression VER. The gear elements of an insert can slide particularly well on the control cam if the stops ANSI, ANS2 have a circular contour with the same radius and the recess VER also has a circular contour with a correspondingly negative profile, but preferably also the same radius. The center points of the individual contours preferably lie on a line that is normal to the base when the stamp STE is placed on it.

The stamp insert EIN2 now has a gear element GET which interacts with the control cam KUR when the stamp is actuated and rotates the stamp insert EIN2. The gear element GET is either formed in one piece with the stamp insert EIN2 or is permanently connected or detachably connected to it, for example in order to be able to replace the insert E1N2 with another. As a rule, however, only the stamp plate itself is replaced if necessary.

The gear element GET consists of a central pin ZAP and two rounded, concave depressions GV1, GV2 arranged laterally therefrom. The central pin ZAP in its front area, which interacts with the control curve KUR, consists of two converging legs SEI, SE2 with an essentially straight contour.

In a slightly more external section through the side wall of the base SOC2 (see FIG. 7) there is also a vertical guide VEF for the pin ZAP, in which the pin is guided vertically in an upper and then in a lower area of its movement and a lateral one Tilting is prevented. In contrast, in an area at the level of the control curve KUR, this guide has a bulge BUC opposite the control curve, which allows a rotation of the elongated pin ZAP and thus a turn by 180 °.

In this area of the bulge BUC, a rotary movement of the stamp insert EIN2 is possible. Lateral slipping is prevented by guiding the insert EIN2 through the axis ACH, with which it is held in the trigger element AUS and is guided in a corresponding guide SFU in the base SOC2 (FIG. 8). FIGS. 9-14 show the sequence of movements of a stamp insert when turning through 180 °. Starting with the starting position according to FIG. 9, when the punch insert EIN2 moves downward, the first depression GV2 initially comes to rest against the upper stop ANSI (FIG. 10). At this stage of movement, the pin ZAP is already released for a rotary movement, since it is already in the area of the bulge BUC.

With a further movement, the insert EIN2 now rolls on the ANSI stop, i.e. the depression GV2 rolls on this stop ANSI until the pin ZAP comes into contact with the lower stop ANS2 with its leg SEI.

In conventional turning mechanisms, the recesses in the control cam and the “pin” of the insert are matched to one another in such a way that the pin rolls off in the recess with a precise fit leads to the fact that a certain height is necessary for the turning mechanism in order to be able to turn 180 °.

In the embodiment according to the invention, however, the pin does not have a circular contour, but its front area is formed from two straight legs SEI, SE2 converging towards one another.

In order to allow smooth sliding, it is provided that the straight legs merge into one another at the tip over a rounded area.

It is also favorable if the straight legs intersect at an angle of about 60 ° - 90 °.

In order on the one hand to allow the gear element to slide smoothly along the control curve and on the other hand to require as little installation space as possible for the movement, the following measures are either taken on their own or a combination is favorable:

x) the central pin has a smaller width than the diameter of the turning axis and it has at the rear an extension delimited by two parallel legs and parallel to the guide rail, which extends in a leg guide parallel to the guide slot in the narrow side walls of the base is; x) the rounded, concave depressions have a smaller diameter than the diameter of the turning axes;

x) the center point of the turning axis lies in a starting position in the direction of movement behind a connecting axis of the center points of the two depressions.

Furthermore, it is also expedient in the above sense if the stops forming the control curve have a circular contour, both stops essentially have the same circular radius, and the distance between the two center points of the stops is essentially four times their radii.

In order to further improve the kinematics, it is advantageous if the width of the pin corresponds approximately to the diameter of the depression.

It is also favorable for optimal movement if the contour of the depressions essentially forms a semicircle.

In order to allow a rotational movement, the leg guide has a recess BUC in the region of the control curve for the rotational movement of the pin ZAP.

Because of this configuration, when the pin ZAP moves downward, it first comes to rest with a leg SE2 against the contour of the lower stop ANS2 (FIG. 11), and a rolling movement of the pin begins around the point of contact of the leg on the contour of the stop. In the course of this rotary movement, the “center point” of the tip of the pin moves upward again and somewhat into the depression, the leg SEI of the pin ZAP sliding somewhat into the depression VER on the contour of the stop ANS2.

By this upward movement of the center of mass of the pin, some space can be saved in the vertical direction compared to a conventional, known stamp, whereby the overall height of the stamp can be kept correspondingly lower.

The final stage of the movement of the stamp insert EIN2 before being placed on the base to be stamped is shown in FIG. 13 and the stamping process in FIG. 14. FIG. 13 shows the rolling movement of the insert EFN2 on the lower stop ANS2, this rolling movement then resulting in a threading movement of the rear of the elongated one Guide the ZAP pin into the VEF guide, in which the insert E3N2 is then guided straight down and is then placed on the base.

After releasing the spring, the spring FED pushes the upper part of the plunger upwards again away from the base SOC2, the insert E1N2 being carried along via the axis ACH. The basically the same kinematic sequence as described above for a stamping process then leads to a turning of the insert again by 180 °, and finally the stamping plate is pressed into the stamping pad again in the end or starting position, with stop ANS2 then of course functioning as ANSI from the above description and leg SE2 takes over the function of SEI on the above description.

FIGS. 15a and 15b schematically show once again a known turning mechanism, FIGS. 16a and 16b in comparison a new turning mechanism according to the invention.

As can be seen from the comparison of the figures, there are essentially the following distinguishing features:

In the conventional mechanism, the pin ZAP 'has a circular cross section in a vertical section (with the punch stationary), and the depressions GV1' and GV2 'are relatively flat. The connecting line between the center points of the depressions GV1 ', GV2' goes through the center point M 'of the axis of rotation ACH'. As a result, a relatively large amount of space is required when the stamp insert is screwed in.

In the mechanism according to the invention, however, the pin ZAP has two essentially straight legs SE1, SE2, which form a rounded triangle, as a result of which it is possible to thread into the depression VER by resting the pin ZAP on the stop ANS2. In addition, the depressions GV1, GV2 are made deeper than those of the known prior art, which is achieved, for example, by a semicircular or parabolic contour of the depressions.

In addition, the center of the axis of rotation ACH does not lie on a line through the center points of the two depressions GV1, GV2, but rather somewhat behind this line when viewed in the direction of movement.

This configuration achieves the movement sequence described and shown in the figures, which takes up less space in the vertical direction than in a comparable known turning mechanism. Finally, a further embodiment of a stamp is shown in FIG. 17. As shown in the other figures, the stamp has two caps on the one hand to actuate the stamp and on the other hand to protect the user from dirt on his hands. When a cap is removed, the corresponding side is released for stamping, while the remaining cap serves as an actuating element.

In the embodiment according to FIG. 17, such caps are fundamentally not necessary, since undesired actuation of the wrong stamp insert by means of a locking bolt BOL is prevented, this locking bolt being actuated by gravity. In the position shown, the upper bolt is in the inner, blocking position, while the lower bolt is pushed outward against a stop by gravity and thus a movement of the trigger OFF is possible relative to the lower base SOC2.

Claims

1. Self-inking stamp with overlap staining, the stamp (STE) consisting of at least one base (SOCl, SOC2), which can be placed on the surface to be stamped and receives a color pad (KIS) opposite the surface to be placed, from a base arranged in the base (SOCl, SOC2), between the ink pad (HIS) and the contact surface with simultaneous turning back and forth, the pressure plate or the like carrying stamp insert (EINl, E1N2), as well as from a base (SOCl, SOC2) with two side legs guided on its narrow side walls (AU1 , AU2) encompassing release element (AUS), which can be moved towards the contact surface against spring force, and in whose side leg ends the turning axes (ACH) of the punch insert (EINl, E1N2) which pass through the narrow side walls of the base (SOCl, SOC2) in straight guide slots (SFU) are mounted are, in the base (SOCl, SOC2) fixed control cams (KUR) on its narrow side walls and on the punch insert (EINl, EIN2) at a distance of whose turning axes (ACH) are arranged a gear element (GET) facing the narrow side walls, which cooperates with the control cam (KUR) during the back and forth movement of the stamp insert (EIN1, EEM2), the gear element (GET) consisting of a central pin (ZAP ) and two rounded, concave depressions (GVl, GV2) arranged to the side of it, and a control curve (KUR) consists of two superimposed, adjacent to the guide slot (SFU) stops (ANSI, ANS2) with a rounded, convex contour, which consists of a Deepening or exemption (VER) are separated characterized in that the stamp has two bases (SOCl, SOC2) arranged one above the other, both of which are slidably mounted in the release element (AUS). 2. Stamp according to claim 1, characterized in that means for blocking the relative movement of a base (SOCl, SOC2) are provided relative to the actuating element (AUS). 3. Stamp according to claim 2, characterized in that the means consist of a cover (ABI, AB2) which surrounds the base (SOCl, SOC2) such that movement of the base (SOCl, SOC2) relative to the trigger element (AUS ) is prevented. 4. Stamp according to claim 2, characterized in that the means is a bolt (BOL) which is slidably mounted in the trigger element (AUS) between two positions, wherein in one position a movement of the base (SOCl, SOC2) relative to the trigger element (AUS) is blocked by the bolt (BOL) and is possible in the other position. 5. Stamp according to claim 4, characterized in that the bolt (BOL) is moved between its two positions by means of gravity. 6. Stamp according to one of claims 1 to 5, characterized in that the gear member (GET) in its area interacting with the control cam (KUR) is designed such that in a region between the two stops (ANSI, ANS2) the pin ( ZAP) during the rotary movement of the stamp insert (EIN1, E3N2), following a downward movement, initially performs an upward movement, which is followed by a downward movement leading to the stamp position. 7. Stamp according to claim 6, characterized in that the central pin (ZAP) in its front area, which cooperates with the control cam (KUR), consists of two converging legs (SEI, SE2) with a substantially rectilinear contour. 8. Stamp according to claim 7, characterized in that the straight legs (SEI, SE2) merge into one another at the tip over a rounded region (GBE). 9. Stamp according to claim 7 or 8, characterized in that the straight leg (SEI, SE2) intersect at an angle of about 60 ° - 90 °. 10. Stamp according to one of claims 7 to 9, characterized in that the central pin (ZAP) has a smaller width than the diameter of the turning axis (ACH) and that it is bounded towards the rear by one of two parallel legs to the guide rail ( SFU) has parallel extension which is guided in a leg guide (VEF) parallel to the guide rail in the narrow side walls of the base (SOCl, SOC2). 11. Stamp according to one of claims 6 to 10, characterized in that the rounded, concave depressions (GVl, GV2) have a smaller diameter than the diameter of the turning axes (ACH). 12. Stamp according to one of claims 6 to 11, characterized in that the center of the turning axis (ACH) is in an initial position in the direction of movement behind a connecting axis of the center points of the two depressions (GVl, GV2). 13. Stamp according to one of claims 6 to 12, characterized in that the stops (ANSI, ANS2) forming the control curve (KUR) have a circular contour, both stops (ANSI, ANS2) have essentially the same circular radius and the distance of the two centers of the stops (ANSI, ANS2) is essentially four times their radii. 14. Stamp according to one of claims 6 to 13, characterized in that the width of the pin (ZAP) corresponds approximately to the diameter of the recess (GVl, GV2). 15. Stamp according to one of claims 1 to 9, characterized in that the contour of the depressions (GVl, GV2) essentially forms a semicircle. 16. Stamp according to one of claims 6 to 15, characterized in that in the region of the control curve the leg guide (VEF) has a recess for the rotary movement of the pin (ZAP). 17.Turning mechanism for a self-inking stamp with overlap staining, the stamp (STE) consisting of at least one base (SOCl, SOC2), which can be placed on the surface to be stamped, a base (SOCl, SOC2) accommodating the inking surface, and a base (SOCl, SOC2 ) arranged, between the ink pad (HIS) and the contact surface with simultaneous turning back and forth, the pressure plate or the like. Carrying stamp insert (EIN1, EIN2), and one of the base (SOCl, SOC2) with two guided on its narrow side walls Side legs (AU1, AU2) encompassing release element (AUS), which can be moved towards the contact surface against spring force, in the side leg ends of which the turning axes (ACH) of the stamp insert (EINl, EIN2) penetrating the narrow side walls of the base (SOCl, SOC2) in straight guide slots (SFU) are stored, with fixed control cams (KUR) on the narrow side walls in the base (SOCl, SOC2) and on the stamp insert ( EINl, E1N2) at a distance from the turning axes (ACH) of which a gear element (GET) facing the narrow side walls is arranged, which cooperates with the control curve (KUR) during the back and forth movement of the stamp insert (EINl, EF 2), the gear element ( GET) consists of a central pin (ZAP) and two rounded, concave recesses (GVl, GV2), and a control curve (KUR) consists of two superimposed stops (ANSI, ANS2) with rounded edges that are adjacent to the guide contactor (SFU) , convex contour exists, which are separated from each other by a depression or exemption (VER), characterized in that the gear element (GET) is designed in its area interacting with the control cam (KUR) in such a way that in a region between the two stops (ANSI, ANS2) the pin (ZAP) adjoins one during the rotary movement of the stamp insert (EIN1, EIN2) Downward movement initially performs an upward movement, followed by a downward movement leading to the stamp position. 18. Turning mechanism according to claim 17, characterized in that the central pin (ZAP) in its front area, which interacts with the control cam (KUR), consists of two converging legs (SEI, SE2) with an essentially straight contour. 19. Turning mechanism according to claim 18, characterized in that the straight legs (SEI, SE2) merge into one another at the tip via a rounded region (GBE). 20. Turning mechanism according to claim 18 or 19, characterized in that the straight legs (SEI, SE2) intersect at an angle of about 60 ° - 90 °. 21. Turning mechanism according to one of claims 18 to 20, characterized in that the central pin (ZAP) has a smaller width than the diameter of the turning axis (ACH) and that it is bounded towards the rear by one of two parallel legs, to the guide rail ( SFU) has a parallel extension which is guided in a leg guide (VEF) that is parallel to the guide rail in the narrow side walls of the base (SOCl, SOC2). 22. Turning mechanism according to one of claims 17 to 21, characterized in that the rounded, concave depressions (GVl, GV2) have a smaller diameter than the diameter of the turning axes (ACH). 23. Turning mechanism according to one of claims 17 to 22, characterized in that the center point of the turning axis (ACH) lies in an output control in the direction of movement behind a connecting axis of the center points of the two depressions (GV1, GV2). 24. Turning mechanism according to one of claims 17 to 23, characterized in that the stops (ANSI, ANS2) forming the control curve (KUR) have a circular contour, both stops (ANSI, ANS2) essentially have the same circular radius and the distance between the two centers of the stops (ANSI, ANS2) is essentially four times their radii. 25. Turning mechanism according to one of claims 17 to 24, characterized in that the width of the pin (ZAP) corresponds approximately to the diameter of the recess (GVl, GV2). 26. Turning mechanism according to one of claims 17 to 25, characterized in that the contour of the depressions (GVl, GV2) essentially forms a semicircle. 27. Turning mechanism according to one of claims 21 to 26, characterized in that in the region of the control curve, the leg guide (VEF) has a recess for the rotary movement of the pin (ZAP). 28. Stamp with at least one base (SOCl, SOC2) and a trigger element (AUS) which is displaceable relative to this and a stamp insert (EF 1, EIN2) rotatably mounted in the trigger element (AUS), characterized in that it has a turning mechanism according to one of the Claims 17 to 27. 29. Stamp according to claim 28, characterized by two bases (SOCl, SOC2), which are arranged one above the other and are displaceably mounted relative to the trigger element (AUS) and in this. 30. Stamp according to claim 29, characterized in that means for blocking the relative movement of a base (SOCl, SOC2) are provided relative to the actuating element (AUS). 31. Stamp according to claim 30, characterized in that the means consist of a cover (ABI, AB2) which surrounds the base (SOCl, SOC2) in such a way that a movement of the base (SOCl, SOC2) relative to the trigger element (AUS ) is prevented. 32. Stamp according to claim 30, characterized in that the means is a bolt (BOL) which is slidably mounted in the trigger element (AUS) between two positions, in one position a movement of the base (SOCl, SOC2) relative to the Tripping element (AUS) is blocked by the bolt (BOL) and is possible in the other position. 33. Stamp according to claim 32, characterized in that the bolt (BOL) is moved between its two positions by means of gravity.