JPH0342599B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a writing instrument, such as a sharp pencil,
It relates to ballpoint pens or felt-tip pens. Specifically, a tubular body and a cap having a series of decorations drawn across both surfaces;
A hollow cylinder containing a feed tappet for holding the inner end of the core inside the tubular body and the cap, and a socket having an annular bottom attached to a rear portion of the hollow cylinder whose diameter is reduced through an annular shoulder. It is related to the writing instruments that were used. A writing instrument of the above-mentioned type in which the cap is screwed directly onto the tubular body or indirectly onto the body via a member cooperating with a member of the actuating mechanism arranged inside the cap and the body is Already known. therefore,
In these two cases, the cap and tubular body once screwed together with their respective screw pitches are in a defined relative angular position (in a longitudinal straight line) with the exterior decoration painted across them both. decoration, corresponding surfaces, etc.).

However, this requirement makes the manufacture of this type of writing instrument more complex and more expensive. Furthermore, the initial relative angular position will eventually change over time and the desired aesthetic effect will no longer be achieved.

An object of the present invention is to provide a writing instrument that eliminates the above-mentioned problems.

This purpose is to provide a writing instrument of the above type, with a fixed ring disposed on the rear part between the shoulder and the annular bottom, an inner ring that abuts the annular bottom inside the receptacle, and an annular compression spring that presses the ring toward the annular shoulder; and an annular compression spring screwed onto the rear portion and compressing the compression spring toward the annular shoulder to adjust the relative angular position of the socket with respect to the tubular body. A friction joint consisting of an adjustment screw for adjusting and fixing is provided, and the outer surface shape of the socket is matched to the inner surface shape of the cap so as to prevent relative rotation between the cap and the socket. It is achieved by what you do.

Below, two embodiments of the writing instrument according to the present invention will be described based on the drawings.

Referring first to FIGS. 1 to 5, a first embodiment of a writing instrument according to the invention consists of a tubular body 1 and a cap 2 forming the envelope of the writing instrument in the position of use, as shown in FIG. The outer surfaces of each of the tubular body 1 and the cap 2 are each decorated with a decoration 3.
It has longitudinal surfaces such as a and 3b. These surfaces and decorations 3a, 3b must be arranged in the position of use so as to be aligned and adjacent to each other so as to give the writing instrument an aesthetic appearance as shown in FIG.

As shown in FIG. 2, the writing instrument has a writing instrument holding cylinder 11 containing a transmission mechanism 4 and a hollow cylinder 10 therein, which is provided with a thread 5 allowing screw connection to the tubular body 1. This transmission mechanism 4 likewise consists of a rotatable socket 6 whose tip is adapted to operate said transmission mechanism 4 in order to move a wick 7 (ink cartridge, not shown) in the axial direction. The outer surface of the rotatable socket 6 is octagonal, as shown in FIG. 4, in which case the surface 8 representing the inner wall of the cap 2, as shown in FIG. 3, is adapted to cooperate in the position of use. (here 8
surface). Thus, the rotatable socket (hereinafter simply referred to as "socket") 6 is inserted into the cap 2 relative to the tubular body 1 in order to actuate the transmission mechanism 4.
By rotating the writing instrument, the rotation of the cap is transmitted to the receptacle without deviation, and the writing instrument can be operated from outside.

The transmission mechanism 4 shown in longitudinal section in FIG.
A mechanism is used which is partially known per se, for example from a mechanism of the type described in Swiss Patent No. 483,937. The transmission mechanism 4 includes a feed tappet 9 of a writing instrument core (not shown) mounted for axial sliding in a hollow cylinder 10, in particular a tubular cam.
Contains. The hollow cylinder 10 of this tubular cam is rotatably installed in the writing instrument holding cylinder 11, but is fixed in the axial direction, and a fixed ring 1 is used for this purpose.
2 is fitted onto the rear part 10' of the hollow cylinder 10 of the tubular cam emerging from the rear of the writing instrument holding cylinder 11. This writing instrument holding cylinder 11 has a thread 5 at its front end for fixing to the tubular body 1 with a screw. Furthermore, the lead feed tappet 9 cooperates on the one hand with a helical guide groove 14 in the wall of the hollow cylinder 10 of the tubular cam and on the other hand with a longitudinal straight slot 15 in the wall of the writing instrument holding cylinder 11. It is equipped with a pin 13 that connects the transmission mechanism to the pin 1.
3. Consists of a spiral guide groove and a longitudinal straight slit.

Said mechanism is actuated by a cooperating rotatable socket 6 in the rear part 10' of the hollow cylinder 10 of the tubular cam. This socket 6 has a wall 6', on the inside of which an inner ring 12' and a compression spring 16 are mounted on a reduced diameter rear part 10' via an annular shoulder 10a of a hollow cylinder 10, which is a tubular cam. through the rear part 1
A compression spring acts axially on an inner ring 12' which is rotatably mounted on the inner ring 12' and cooperates with the annular bottom 6a of the socket 6. Furthermore, the inner wall of this rear portion 10' has a male thread as an adjusting screw 17 which cooperates with the compression spring 16.

This adjustment screw 17 is connected via the compression spring 16.
The inner ring 12' is compressed, acting on the fixed ring 12 through the annular bottom 6a of the socket 6, and further adjusting the frictional force that is the coupling force with the hollow cylinder 10, which is a tubular cam. This frictional force must be adjusted by means of the adjusting screw 17 in order to obtain the actuation of the transmission mechanism by rotation of the socket 6. Thus, the person using the writing instrument of the invention can on the one hand move the cap 2 and, by applying a slight rotational force, rotate the receptacle 6 and activate the transmission mechanism of the writing instrument, and on the other hand move both e.g. the tubular body and the cap. Loosen the adjustable friction joint so that the external decoration drawn across the sides is in a straight line, fit the cap into the socket 6, and insert the tubular cam 10.
After adjusting the position between the two, the relative angular position of the cap 2 with respect to the tubular body 1 can be adjusted to a predetermined value by removing the cap and tightening the adjustment screw as described above.

A normal rotational movement of the socket 6 therefore causes the hollow cylinder 10 of the tubular cam to rotate on its axis and, by means of the helical guide groove 14 of the hollow cylinder, causes the tappet 9 to be rotated.
The pin 13 integral with
axial movement is generated. The axial movement of the feed tappet 9 causes the rearward position of the pin 13, which corresponds to the retracted position of the writing center and its end;
The length and shape of the spiral guide groove 14 is limited between the forward position of the pin 13 corresponding to the position in which the writing instrument is used, and the longitudinal straight slit 15 guides the pin 13 linearly between these two positions. .

The annular bottom 6a of the socket 6, the inner ring 12' under the action of the compression spring 16, the fixed ring 12 fitted into the annular shoulder 10a of the reduced diameter rear part 10' of the tubular cam 10, and the adjustment screw 17. The friction joint thus constructed allows an angular adjustment of the socket 6 relative to the tubular body 1 and thus of the cap 2 in relation to the tubular body 1.

Furthermore, in the position of use, the cap 2 is mounted on the socket 6 such that the inner wall surface 8 (shown in FIG. 3) cooperates with the outer wall surface of the socket 6 to fix the angular position of the cap 2. can be fitted on top. The outer walls of the socket 6 shown in FIG. 4 have slightly convex and deformable surfaces, so that they cooperate frictionally with the flat and rigid inner surface 8 of the cap 2.

Thus, according to the writing instrument according to the invention, for example, the surfaces of the respective jackets are aligned or the decorations of the jackets are matched.
The relative angular position of the cap and tubular body can be adjusted easily at any time.

When using the writing instrument according to the invention, the angular position adjustment of the cap 2 and the tubular body 1 can be carried out as follows. That is, adjustment screw 1
7, place the cap 2 in the use position and adjust its angular position as desired, then remove the cap 2 again and finally release the compression spring 16.
Tighten the adjustment screw 17 so as to stop the socket 6 in the selected relative angular position on the tubular cam 10, and finally refit the cap 2 into the position of use.

According to a variant not shown, the tubular body 1 by itself constitutes almost the entire envelope of the writing instrument, and only the socket emerges from the tubular body at the rear, in which case the cap covers only said socket. The dimensions are reduced as follows.

Referring to FIG. 6, a second embodiment of the writing instrument according to the present invention will be described. In the second embodiment, contrary to the first embodiment, the cap 18 does not play a role in advancing the writing tip. In fact, the cap 18 of this second embodiment is merely decorative and, in the position of use, is placed on a hollow cylinder 19, which is fixed to the tubular body 1, for example by screws.

The cap 18 has, at a defined angular position relative to the outer surface of the tubular body 1, a decoration or a shape on its outer surface which is adapted to be placed in the position of use. Furthermore, an opening 20 is opened in the rear end of the cap 18 in the axial direction to allow passage of an operating push button 21 for pushing out the core 24. This operation push button 21 is pressed so that the feed shaft rod 23 is pressed so as to push the ink cartridge (core) 24, which is the center of the writing instrument, toward the front of the retracted position in the use position.
acts on the feed tappet 22 via.

The mechanism for pushing out the core 24 is not shown or explained in detail here, but it uses a mechanism known per se, for example from a mechanism of the type described in Swiss Patent No. 413,656.

The hollow cylinder 19 has a rear part 19' which is provided with an axial opening for the passage of the feed shaft rod 23 which connects the operating pushbutton 21 to the feed tappet 22. The outer wall of the adjustable socket 25 is polygonal, the inner diameter of the portion of the cap 18 that corresponds to the socket 25 is also a polygon that fits into the outer wall of the socket, and the friction joint is a hollow cylindrical rear portion 19. An annular shoulder 1 of the rear part 19' mounted around and reduced in diameter
A fixed ring 26 fitted into the socket 9a and an inner ring 26' rotatably attached to the inside of the socket 25 around the part 19' sandwich the reduced conical part annular bottom part 25a of the socket 25 therebetween, compression spring 27
The stack compresses the inner ring 26' inside the socket, and the internal thread 28 is threaded into a thread in the outer wall at the rear end of the rear portion 19', providing a mechanism for pushing the compression spring.

As described above, the inner wall of the cap 18 has a polygonal portion that corresponds to and cooperates with the polygonal wall of the socket 25, so that the relative angular position of the cap 18 and the tubular body 1 can be fixed. . That is,
For purposes of aligning surfaces or matching decorations, this relative angular position can be adjusted by using the adjustable friction joint described above.

The friction joint is located at the rear portion 19' of the hollow cylinder 19.
First, the fixed ring 26 is fitted, and then the inner ring 2 is placed inside the reduced cone of the socket.
6', a compression spring 27 is provided thereon, and the socket 25 and the hollow cylinder 19 are strongly connected by the axial force exerted by tightening the female screw 28 from the outside of the compression spring. Therefore, as described above, the adjusting (female) screw 28 is also loosened, the cap is placed in the use position and its angular position is adjusted as desired with the decorative position, then the cap is removed and the cap is placed on the hollow cylinder 19'. Then, tighten the adjusting (female) screw 28 to stop the friction joint, and finally fit the cap 18 into its use position.

As described above, the writing instrument of the present invention prevents relative rotation between the cap and the socket by matching the external shape of the socket with the internal shape of the cap.
And by providing an adjustable friction joint as described above between the hollow cylinder whose angular position is determined by the tubular body and the receptacle, the decoration drawn astride the tubular body and the cap of the writing instrument. The positioning of the writing instrument can be adjusted very easily at any time, and the decorative value of the writing instrument can be ensured.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view showing one embodiment of the writing instrument of the present invention, Fig. 2 is a side view of the writing instrument of Fig. 1 with the cap removed, and Fig. 3 is an inner view of the cap of the writing instrument according to Fig. 1. , FIG. 4 is a rear view of the writing instrument shown in FIG. 1 with the cap removed, FIG. 5 is a partial longitudinal cross-sectional view showing the tubular body and the inside of the writing instrument shown in FIG. 1 with the cap removed, and FIG. FIG. 2 is a partial vertical sectional view showing a second embodiment of the writing instrument of the invention. [Symbols in the figure], 1... Tubular body, 2, 18...
... Cap, 3a, 3b ... Decoration, 4 ... Transmission mechanism, 5 ... Screw thread, 6 ... Rotatable socket (socket), 7 ... Core, 8 ... Polygonal surface, 9 ... Feed tappet, 10...Hollow cylinder (tubular cam), 11...
... Cylinder for holding the writing instrument center, 12, 26 ... Fixed ring,
12', 26'...Inner ring, 13...Pin, 14...
Spiral guide groove, 15...Longitudinal straight slit,
16, 27... Compression spring, 19... Hollow cylinder, 2
0...Opening, 21...Operation push button, 22...
Feed tappet, 23...Feed shaft rod, 24...Core (ink cartridge), 25...Socket, 17,2
8...Adjustment screw.

Claims (1)

[Claims] 1. A series of decorations drawn across both surfaces 3.
a; tubular body 1 and cap 2 having 3b;
18; a hollow cylinder 10; 19 which houses a feed tappet 9; 22 which holds the inner end of the core 7; 24 inside the tubular body and the cap;
An annular shoulder 10a of the hollow cylinder; a rear portion 10' whose diameter is reduced through 19a; an annular bottom 6a at 19';
A writing instrument is provided with a socket 6; 25 having a socket 6; 25a, the fixed ring 12; Inner ring 12' abutting the annular bottom; 2
6'; an annular compression spring 16; 27 that presses the inner ring toward the annular shoulder; and an annular compression spring 16; 27 that is screwed onto the rear portion and compresses the compression spring toward the annular shoulder. A friction joint consisting of an adjusting screw 17; 28 for adjusting and fixing the relative angular position of the socket with respect to the cap 2; 18 and the socket 6; 2 is provided;
5. A writing instrument characterized in that the outer shape of the receptacle matches the inner shape of the cap in order to prevent relative rotation with the writing instrument. 2. The writing instrument according to claim 1, wherein the outer surface shape of the socket 6; 25 is polygonal. 3. The hollow cylinder 10 is a tubular cam that can only rotate, and includes a pin 13 attached to the feeding tappet 9 contained therein, a spiral guide groove 14 provided in the hollow cylinder, and a writing instrument circumscribing the front part of the hollow cylinder. A writing instrument according to claim 1 or 2, characterized in that a longitudinal straight slit (15) provided in the holding cylinder (11) forms a transmission mechanism (14) for moving the lead (7) in and out. 4. The writing instrument according to claim 3, wherein the adjustment screw 17 is a male thread provided on the rear end portion 10' of the hollow cylinder 10. 5. The hollow cylinder 19 is fixed to the tubular body 1, with a feed shaft rod 23 equipped with a core 24 outside the feed tappet 22 and a feed mechanism connected to the rear of the feed tappet for moving the core in and out. A writing instrument according to claim 1 or 2, characterized in that the end of the cap (18) has an opening (20) that serves as a passage for a push button (21) of a feed shaft (23). 6. The writing instrument according to claim 5, wherein the adjustment screw 28 is a female screw that is tightened on the outer wall of the rear portion of the hollow cylinder.