JPH0132080B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a writing instrument having a sleeve-shaped casing, and a writing tip located at one end of the casing.

Writing instruments of this type are commercially available as fiber pens (felt pens), knotted pencils, and especially as so-called ballpoint pens. In this case, the writing tip can advantageously be retracted into the housing in order to avoid staining clothing or the like.
In other words, the writing tip only occupies the exterior of the tapered casing end at the writing tip when in use.

Inexpensive constructions of such writing implements generally do not include any securing devices for pockets of clothing, writing implement cases, document bags, etc. If such fastening devices are provided in expensive constructions, so-called clips are used, which are tongue-shaped and extend approximately parallel to the housing and are themselves spring-elastic or spring-elastic. is connected to the casing. In the case of plastic casings, the clip can be constructed integrally with the casing, for example by injection molding, but generally the clip is a flat metal plate that is connected to the casing by special fastening elements. Formed from a spring.

However, such clips only allow the writing instrument to be inserted into relatively flat objects, such as pockets in the wall of clothing, a writing instrument case or a briefcase. If an attempt is made to insert a writing instrument with a clip into a relatively thick object, the clip will become deformed or break completely. In practice, writing instruments are always encountered in which the clip breaks after a short period of use or bends in such a way that a secure fixation on the object is no longer possible.

Another disadvantage of the clip is that it does not provide much resistance to axial movement of the writing instrument. This is because the fixing does not take place form-fittingly, but rather frictionally, and the reliability of the fixing is dependent upon the spring force of the clip. If such a writing instrument is inserted, for example, into a shirt pocket or the back pocket of trousers (jeans), there is a risk that the writing instrument will be pushed out when the user bends down, causing the writing instrument to become dusty. This is particularly the case when a writing instrument is to be fixed to the front of the pants with a clip.

It is therefore an object of the present invention to provide a method of fixing even thick objects, in particular in the axial direction, by means of a pressing force acting on the casing in the axial direction, in such a way that even thick objects can be fixed in such a way that they do not fall off, provided that the objects have finite dimensions. The object of the present invention is to provide a writing instrument of the type mentioned at the outset, which can be fixed to a (narrow) belt or belt shaft in such a way that the fixation cannot be released.

According to the invention, this object is achieved in that a hook with a closing element is fixedly fixed on the housing at the end of the housing opposite the writing tip.

Particularly preferably, the hook is designed as a carabiner hook.

Such hooks always form an eye that is open or can be opened on one side.
In the case of carabiner hooks, the closing element is initially biased in the closing direction by a spring or is designed as a spring itself. Only by means of a pressing force exerted on the closure member is the closure member opened such that thick objects such as ropes, belts, thongs, belt loops etc. can be passed through and/or removed from the eye. can do.

It is clear that the internal dimensions are chosen accordingly.

Since the closing member cannot be opened by the forces that may arise from the part through which the eye is guided, the writing instrument can be fixed absolutely securely on the object mentioned above, so that the writing instrument (with respect to the force direction) cannot be opened. (irrelevant) cannot be destroyed. In the case of plastic housings, the hooks are injection molded onto the housing without any special loading, thereby eliminating special installation costs. Since the hook does not itself have to be spring-elastic nor does it have to be spring-elasticly fixed to the casing, the hook can be made much stronger than, for example, the aforementioned clip and thus very well prevents the writing instrument from becoming dusty. can do.

Furthermore, writing instruments have become fashionable items due to the fact that they can be carried almost completely outside of clothing. The decorative effect in this connection is further increased significantly by the tailored construction of the casing. Thus, for example, a writing instrument according to the invention can be produced with a surface condition (color, texture) that matches a given textile product.

A particularly advantageous writing instrument, according to an embodiment of the invention, is characterized in that the part forming the actual hook is approximately three-quarter circle shaped and is connected to the casing in such a way that it transitions into the casing; The closure element is at least partially designed as a cylindrical pin and is mounted axially displaceably in the housing.

In this case, it is particularly advantageous for the end face of the three-quarter circular hook to be located in the projection plane of the housing, so that the axially movable pin essentially replaces the missing quarter circle of the hook. In this connection, the relationships in the drawings are evaluated approximately as per standard.

A particularly advantageous relationship is obtained if the housing is connected to one end of the hook in such a way that it extends approximately tangentially to the hook and the movable pin is coaxially mounted in the housing.

Furthermore, it has already been pointed out that in such writing instruments, if the writing tip occupies the position of use, that is to say outside the end of the casing, there is a risk of staining textiles, etc. To avoid this, ballpoint pens in particular have a feeding mechanism, also considered as a pressing mechanism, for the writing insert (ballpoint lead) of the ballpoint pen, via which the writing insert is moved in the longitudinal direction. I am made to do so. In the conventional construction of such ballpoint pens, the feed mechanism is operated by a dowel pin projecting from the rear end of the casing.

The invention can be combined in a particularly advantageous manner with such a feed mechanism for the writing insert. According to an embodiment of the invention, this is achieved in that the closing member is connected to the feed mechanism. When using a writing instrument, the writing tip is initially still located outside the casing. However, in order to be able to hook and secure the hook, the feed mechanism must be operated in such a way that the writing insert is retracted or returned to its internal position under the action of a normally provided push spring. This means that in both cases, after the hook has been hooked and the closing member has been closed, the writing insert also occupies an internal position, so that the risk of soiling is eliminated.

For actuating the closing member and possibly also the feed mechanism, a sliding key is particularly preferably provided which is located on the outer circumference of the housing.

The invention will now be explained with reference to the illustrated embodiment.

The drawing shows a writing instrument 1 having a sleeve-shaped casing 2, at one end 3 of which a writing tip 4 is located. The writing tip 4 is part of a replaceable writing insert 5, which in this embodiment is designed as a ballpoint pen core with normal dimensions. The casing 2 is constructed in a conventional manner longitudinally divided in order to allow the writing insert 5 to be replaced.

A hook 7 is provided integrally with the casing 2 at the casing end 6 opposite to the writing tip.
Most of the hook 7 is constructed as a torus. In this case, the center point of the cross section of the hook extends over approximately three-quarters of a circle, and the hook is located at 8 points.
The thickness of the casing 2 gradually increases.

The hook 7 forms an eye 9 with an opening 10 in the direction of the longitudinal axis of the casing 2;
0 is closed by a closing member 11. The opening 10 is delimited on the one hand by the end face 12 of the hook 7 and on the other hand by the end face 13 of the casing end 6. Both end surfaces 12 and 13 are the casing 2
extends radially with respect to the longitudinal axis of In this case, the end face 12 is located in one plane in which the axis of rotation of the torus forming the hook 7 lies, whereas the smallest generatrix M forming the diameter of the eye 9 tangentially lies on the end face 13. It is transitioning. In this manner, the aperture 10 is approximately half the size of a quarter arc of the torus.

As can be seen in particular from FIG. 2, the closure member 11
is designed as a cylindrical pin and is mounted axially movably in the housing 2.
For movement, the closing member 11 is connected to the slide key 14 via a radial spacer 15. In the longitudinal range of movement of the spacer 15, the housing 2 is provided with a slot 16, whereas the sliding key 14 is seated in a recess 17 in the housing 2.

As can be seen in FIG. 2, the writing instrument has a feed mechanism 18 for the writing insert 5, to which a closing member 11 is coupled or directly connected. Groove 1 for even better hooking.
By actuating the slide key 14 with 9, not only the closing member 11 is opened or closed, but also the feed mechanism 18 is actuated at the same time. In this case, the feed mechanism 18 corresponds to a known feed mechanism having a locking pawl or the like. In any case, the arrangement is such that when the closing member 11 closes the opening 10 in the hook 7, the writing tip or writing insert 5 assumes a retracted position.

In order to prevent forces from acting on the end of the closure element 11, a recess 20 is provided in the end face 12 of the hook 7, into which the closure element engages positively. In this way, lateral forces acting on the closure member are additionally absorbed. This is because in this case the closure element is a support supported in two places.

[Brief explanation of drawings]

The drawings show an embodiment of the invention, in which FIG. 1 is a side view of a complete writing instrument configured as a ballpoint pen, and FIG. 2 is a partial vertical sectional view of the rear part of the writing instrument. 1... Writing implement, 2... Casing, 3... End, 4... Writing tip, 5... Writing insert, 6...
Casing end, 7... Hook, 8... Thick part, 9... Eye, 10... Opening, 12, 13...
End face, 14...Slide key, 15...Spacer, 16...Elongated hole, 17...Notch, 18...Feeding mechanism, 19...Groove, 20...Recess.

Claims (1)

[Claims] 1. A writing instrument, comprising a sleeve-shaped casing, in which a writing insert is movably disposed, and the writing tip of the writing insert is retracted into the casing at one end of the casing. possible, and furthermore a feeding mechanism is provided for the writing insert and a hook is integrally molded on the end of the casing opposite the writing tip, the hook being provided with a closing member. Writing instrument, characterized in that the closing member 11 is at least partially designed as a cylindrical pin and is mounted axially movably in the casing and is connected to a feed mechanism 18. 2. The writing instrument according to claim 1, wherein the portion forming the original hook 7 is formed in an approximately three-quarter circle shape and is connected to the casing 2 so as to be transferred to the casing 2. 3. The end face 12 of the hook 7 is located in the projection plane of the casing 2 and the closing member 11 fills the missing quadrant of the hook.
Writing implements listed in section. 4. A writing instrument according to claim 3, in which a recess 20 is arranged in the end face 12 of the hook 7, in which the closing member 11 engages positively in the closed position. . 5. The writing instrument according to claim 1, wherein a slide key 14 is coupled to the closing member 11, and the slide key is further coupled to a feeding mechanism 18. 6. The writing instrument according to claim 2, wherein the casing 2 is connected to one end of the hook so as to extend substantially tangentially to the hook 7. 7 Slide key 14 is inserted into notch 1 of casing 2
7. A writing instrument according to claim 5, which is supported by Patent No. 7. 8. The writing instrument according to claim 1, wherein the hook 7 is configured as a carabiner hook.