EP1442899A1 - Closure cap with refill function - Google Patents

Abstract

A writing fluid storage unit (12) receives writing fluid arranged in a closure cap (10) reversibly fitted to a shaft holding a capillary writing tip (32).

Description

The present invention relates to a wet writing device according to the Preamble of claim 1.

Such wet writing instruments are, for example, in the form of so-called Markers are used to identify, for example printed text passages a fluorescent marking fluid submit. To prevent the capillary writing tip from drying out in the event of a A closure cap can be used to prevent the pen from being used be placed on the shaft in such a way that the Writing tip is covered from the environment.

As a result of the high cost of manufacturing such writing instruments it is desirable to do this after the initial filling of writing fluid not having to throw it away, but refilling writing fluid to be able to. There are various solutions for this in practice. For example, wet writing instruments are known in which the shaft of the writing instrument has a liquid-tight seal Refill opening is provided. However, this alternative solution is in As a result of the need for a tight but multiple separable connection between the refill opening and a corresponding closure element having to provide, relatively expensive. A another solution is to provide a writing fluid reservoir, the contents of which are pressed into the writing instrument via the writing tip becomes. The storage device of the Writing instrument is often overcrowded, which is what started using the Pen after the refill to an increased levy Writing fluid leads.

In addition to the ability to refill writing fluid, can in addition, the storage capacity of the Increase writing fluid storage device. That alternative but are often opposed to design reasons, since such a writing instrument should not be of excessive width and / or length.

It is an object of the present invention in a wet writing device the writing fluid storage device of the type mentioned at the beginning considering a high storage capacity and / or the Arrange designs of the writing instrument optimally.

The above object is achieved by the features of claim 1 solved. Advantageous configurations can be found in the subsequent ones Claims 2 to 9.

By arranging the writing fluid storage device in the The closure cap is often used for design reasons, for example voluminously designed cap is used sensibly, in which the there dead volume at least partially the writing fluid storage device receives. In addition, the writing tip due to their direct contact with that in the cap arranged writing fluid storage device optimally with Soaked writing fluid. The solution is also inexpensive as it is implementable by machine. In addition, the known at Writing devices often find a proportionate division large or long shaft and a relatively small cap be changed so that the size of the cap to the size of the shaft 1: 1 or 2: 1 etc. Finally, the wet writing device can be refilled by that either the cap with empty writing fluid storage device simply against a new cap with full Storage device is replaced or the contact point between the capillary tip and the one in the cap Storage device used for refilling in a simple manner because it is easily accessible.

The arrangement of the liquid storage device in the closure cap can be done in different ways. An advantageous solution is that in the cap one to the bottom of the Sealing cap spaced apart is provided, which the liquid storage device opposite the cap entry opening limited for the shaft and which an opening has, by the closure cap placed on the shaft the capillary writing tip in liquid-conducting contact with that in the Writing liquid storage device stored writing liquid can reach. This will prevent dirt particles from entering avoided the writing fluid storage device. Furthermore depending on the design of the writing fluid storage device, the opening for the capillary tip find use as a refill opening for the writing fluid if the first filling of writing fluid in the storage device of the Cap is completely removed from this.

To transfer the writing fluid from the writing fluid storage device in the cap to the capillary tip to facilitate, it is advantageous if the capillarity or the effect of Capillary action of the writing fluid storage device in the closure cap is smaller than that of the capillary writing tip and one if necessary, further storage device present in the shaft.

To further increase the storage capacity of the writing instrument, furthermore be provided that a inside the shaft further or second writing fluid storage device arranged is. As a result, almost any existing dead volume of the writing instrument usefully used as a writing fluid storage device.

It is advantageous if the capillarity is arranged in the shaft Writing fluid storage device is smaller than that of the capillary writing tip, but larger than that of the writing fluid storage device in the cap.

In order to damage the writing fluid storage device in this case too in the shaft by, for example, penetration of Preventing dirt particles from the environment can continue be provided that the provided in the shaft Writing fluid storage device opposite the outside is completed by a cover wall, which is preferably the Capillary writing tip holds.

The writing fluid storage device in the cap and / or in the shaft by a sponge or a fiber material be educated. Of course, any other suitable one Material can be used.

A particularly inexpensive manufacture of the invention Wet writing device can be achieved in that in the cap arranged partition and / or the cover wall provided on the shaft by means of ultrasonic welding on the sealing cap or the shaft is liquid-tight.

Fig. 1

eine Seitenansicht eines erfindungsgemäßen Nassschreibgerätes;

Fig. 2

eine zu Fig. 1 ähnliche Ansicht, jedoch zusätzlich mit aufgeschnittener Verschlusskappe; und

Fig. 3

eine zu Fig. 2 ähnliche Ansicht, jedoch zusätzlich mit aufgeschnittenem Schaft.

Further advantageous configurations and an exemplary embodiment of the wet writing device according to the invention are explained below in conjunction with the accompanying drawing figures. In this context, it should be pointed out that the terms "left", "right", "bottom" and "top" used in the description of the exemplary embodiment refer to the drawing figures with normally readable figure designations or reference symbols. Here is:

Fig. 1

a side view of a wet writing instrument according to the invention;

Fig. 2

a view similar to Figure 1, but additionally with a cut cap. and

Fig. 3

a view similar to Fig. 2, but additionally with a cut shaft.

The wet writing device according to the invention shown in FIGS. 1 to 3 S has the outer contour of a in the side view shown Kite quadrangle, where the tops of the two form the kite square forming isosceles triangles are cut off. The two Cutting lines run parallel to each other and at least approximately perpendicular to the central longitudinal axis of the wet writing instrument S. Although not shown, is perpendicular to the plane of the drawing of Figures 1 to 3 extending thickness of the wet writing instrument S by a multiple smaller than its longitudinal extension in the plane of the drawing. How can also be seen from Figures 1 to 3, the corners of the Writing instrument S rounded off.

The wet writing device S according to the invention contains the main components a cap 10 and a shaft 30. The cap 10 is preferably plugged onto the shaft 30 in a liquid-tight manner and possibly locked there, but can be reversibly removed from this become. In Fig. 1 it is at least approximately perpendicular to the longitudinal extent of the writing instrument S running joint between the sealing cap 10 and shaft 30 with the reference numeral 20.

It can be seen that the parting line 20 does not coincide with the two triangles of the dragon square common basis, but this is located in the area of the closure cap 10.

The closure cap 10, which is made of a suitable plastic is at least approximately perpendicular to the central longitudinal axis the cap 10 or the writing instrument S extending Floor 10a and immediately adjacent to floor 10a Side walls 10b, which together define a cavity 10c or enclose. On the side opposite the floor 10a, i.e. the right side of the cap 10 is an insertion opening 10d is provided, via which the closure cap 10 on the shaft 30 can be put on.

Spaced from the insertion opening 10d is located inside the Cavity 10c a partition 10e, which is at least approximately perpendicular to the longitudinal extent of the closure cap 10 or of the writing instrument S and thus extends parallel to the bottom 10a. The distance of the partition 10e from the insertion opening 10d in the direction the longitudinal extent of the closure cap 10 is very much smaller than the distance of the partition 10e from the bottom 10a of the cap 10, as shown in Fig. 2. Although in FIG. 2 3 and 3, the partition 10e is not integral with the side walls 10b, but actually a single part, which in the manufacture of the writing instrument S according to the invention Cap 10 after inserting one which is explained below Writing fluid storage device 12 used and through there an ultrasonic welding process on the side walls 10b of the closure cap 10 is attached.

The partition 10e is concentric with the longitudinal axis of the closure cap 10 or the shaft 30 arranged opening 10f provided in their shape and dimensions according to the design of the shaft 30 in the area of a closer below explained writing tip 32 is formed. The opening 10f is by angling the edges of the opening 10f delimiting the opening Partition 10e in the direction of the bottom 10a of the closure cap 10, i.e. limited to the left.

Inside the cap 10 is a first writing fluid storage device 12 provided for recording and storage a writing fluid is provided. The writing fluid storage device In the present case, 12 is made of a fiber material educated. As is apparent from FIGS. 2 and 3, the writing fluid storage device is 12 each at a distance from both the floor 10a and to the partition 10e of the closure cap 10. These two distances are optional and can be both or individually not be present. In addition, the storage device 12 is the Shape of the cavity 10c adapted inside the cap 10.

The shaft 30, which is also made of a suitable plastic, in particular the same plastic as that of the cap 10, made is or can be, at least approximately Bottom running perpendicular to the central longitudinal axis of the shaft 30 30a and side walls directly adjoining the base 30a 30b, which together define or enclose a cavity 30c. On the side opposite to the bottom 30a is the Shank 30 provided with a cover wall 30d, which is an ultrasonic welding process with the side walls 30b of the shaft 30 connected is.

3, the cover wall 30b is in Form a cone with concave side walls curved inwards and ends in a concentric to the longitudinal axis of the shaft 30 or the closure cap 10 arranged circular opening 30e. The outer diameter of the opening 30e essentially corresponds the inner diameter of the opening 10f of the closure cap 10, so that when the closure cap is attached to the shaft 30 10 the portion of the cover wall 30d in FIG the opening 10f can enter and form a tight connection, as shown in Fig. 3.

A capillary writing tip 32 is inserted into the opening 30e is shown in Fig. 3, a wedge-shaped, from bottom left to top right has a bevelled outer contour. The capillary writing tip 32 protrudes in the direction of the closure cap 10 via the opening 30e outside. When the cap 10 is attached, the capillary writing tip can 32 into a corresponding to the shape of the writing tip 32 designed recess 12a in the writing fluid storage device 12 of the closure cap 10 in a liquid-conducting contact enter.

As is also apparent from Fig. 3, is in the interior of the cavity 30c, a second writing fluid storage device 34 is arranged, each a distance from the floor 30a or the cover wall 30d having. Otherwise, the writing fluid storage device 34 adapted to the shape of the shaft 30.

The writing fluid storage device 34 stands over writing fluid guiding elements 32a, 32b of the capillary writing tip 32 with this in liquid-conducting connection. The capillarity of the second storage device 34 is smaller than that of the writing tip 32 but larger than that of the first writing fluid storage device 12 in the cap 10. This ensures that on the shaft 30 plugged cap 10 in the first writing fluid storage device 12 located writing fluid as a result the capillarity difference between the first storage device 12 and the writing tip 32 on the one hand and between the first and the second storage device 12, 34 on the other hand from the first storage device 12 can get into the writing tip 32, but not into the second storage device 34. If the closure cap 10 is of removed from the shaft 30, the writing fluid arrives as a result of Capillary difference between the writing tip 32 and the second storage device 34 from the storage device 34 to the writing tip 32nd

In this context it should also be noted that the filling of the first writing fluid storage device 12 is preferred should be done with the cap 10 lying. In addition, um leakage of the writing fluid from the first storage device 12 to avoid when the cap 10 is in an unfavorable position, a compact shape of the closure cap 10 and / or the storage device 12 advantageous.

The arrangement of a writing fluid storage device 12 in the The closure cap 10 is also particularly suitable for several wet writing instruments S different colors advantageous. Becomes the capillary writing tip 32 of a wet writing device S according to the invention, which from the second writing fluid storage device 34 supplied with a color is "dipped" into the cap 10 of a different color, a mixed color can be created in this way. Because the recorded Amount of writing fluid proportional to the duration that a Cap 10 on a shaft 30 or on a writing tip 32 is plugged on, a controlled mixture can therefore be achieved. Because the last refilled writing fluid in high concentration contained in the writing tip 32, a smooth color transition are generated while the writing tip 32 is emptied and Writing fluid flows from the second storage device 34.

Claims (9)

Wet writing instrument, comprising a shaft (30) for holding a capillary writing tip (32) and a closure cap (10) which can be reversibly placed on the shaft (30) to protect the writing tip (32),
characterized in that a writing fluid storage device (12) for holding a writing fluid is arranged in the closure cap (10). Wet writing device according to claim 1,
characterized in that a separating wall (10e) is provided in the closure cap (10) which is spaced from the bottom (10a) of the closure cap (10) and which the writing liquid storage device (12) opposite the cap entry opening (10d) for the shaft (30 ) and which has an opening (10f) through which the capillary writing tip (32) can come into liquid-conducting contact with the writing liquid stored in the writing liquid storage device (12) when the cap (10) is placed on the shaft (30). Wet writing device according to claim 1 or 2,
characterized in that the capillarity of the writing fluid storage device (12) in the closure cap (10) is smaller than that of the capillary writing tip (32). Wet writing device according to one of claims 1 to 3,
characterized in that a further writing fluid storage device (34) is arranged in the interior of the shaft (30). Wet writing device according to claim 4,
characterized in that the capillarity of the liquid storage device (34) arranged in the shaft (30) is smaller than that of the capillary writing tip (32), but larger than that of the writing liquid storage device (12) in the closure cap (10). Wet writing device according to claim 4 or 5,
characterized in that the writing fluid storage device (34) provided in the shaft (30) is closed off from the outside by a cover wall (30d) which preferably holds the capillary writing tip (32). Wet writing device according to one of claims 1 to 6,
characterized in that the writing fluid storage device (12, 34) in the closure cap (10) and / or in the shaft (30) is formed by a sponge or a fiber material. Wet writing device according to one of claims 1 to 7,
characterized in that the partition (10e) arranged in the closure cap (10) and / or the cover wall (30d) provided on the shaft (30) is attached to the closure cap (10) or the shaft (30) in a liquid-tight manner by means of ultrasonic welding. Wet writing device according to one of claims 1 to 8,
characterized in that the capillary writing tip (32) is chamfered in a wedge shape.

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