CH709388B1 - Portable writing device deployable and retractable. - Google Patents

Abstract

The invention relates to a portable writing device (1000) comprising a writing means (500) movable between two deployed and retracted positions. It comprises first means for transforming a relative pivoting movement applied to a first (300) and a second (400) peripheral component in a movement along a longitudinal direction (D) of said writing means (500), and / or in a substantially radial movement of at least a third movable component (600) of said portable writing device (1000). It comprises a central crew containing said writing means (500), movable only longitudinally with respect to an intermediate crew (200) movable only longitudinally with respect to said first peripheral component (300), said intermediate crew (200) being recessed or outside said first peripheral component (300) in said extended or retracted position.

Description

Description

FIELD OF THE INVENTION The invention relates to a portable writing device comprising a writing means movable between two deployed and retracted positions.

The invention relates to the field of handheld devices, comprising a content usable on demand by the user, and preserved, when it is not used, in a container ensuring both the safety of the user and that of this content. A particular category relates to writing devices, such as pens, ballpoint pens, mechanical pencils, and the like.

BACKGROUND OF THE INVENTION The safety of using a small portable device, such as a pen or the like, concerns both the user who is carrying this device on him and must not suffer from nuisance such as injury, stain, irradiation, or other, and the content of this portable device, which may have a certain value such as a card or a memory stick containing data, a coding or decryption device, or similar, and which may still need to be protected due to its fragility as an optical device or a writing instrument, or the like.

We know spring eclipse mechanisms, followed by a pivoting cam during a relative pivoting imposed on two components of the device, or by control of a lever or a pusher accessible to the exterior of the appliance. The external components must be designed so as to prevent any operation not controlled by the user; in general, such external components are reduced to a minimum, since they represent discomfort for the user, which can occur both during the phases of use of the device where its content is operational for interacting with the external environment, as during periods of non-use where the content is protected inside.

The design of such a device must take into account security and ease of use for the user, but also the possibility of disassembly for intervention on the content, in particular for the exchange thereof.

Summary of the invention [0006] The invention proposes to provide a portable safety device, of use and easy implementation, designed for easy disassembly, with a simple and brief maneuver command for deployment or content retraction, which also authorizes the deployment or retraction of at least one other component than this content.

To this end, the invention relates to a portable writing device comprising a mobile writing means between two deployed and retracted positions, characterized in that said portable writing device comprises first means for transforming a relative pivoting movement applied to first and second peripheral components in a longitudinal movement of said writing means, and / or second means for transforming said relative pivoting into a substantially radial movement of at least one third mobile component of said portable device writing, and in that it comprises a central assembly containing said writing means, movable only longitudinally in a longitudinal direction relative to an intermediate assembly movable only longitudinally in said longitudinal direction with respect to said first peripheral component, the end of said intermedia crew re being set back or outside a front orifice of said first peripheral component in said deployed or respectively retracted position.

According to one embodiment of the invention, said central equipment extends in said longitudinal direction in which it is only movable relative to said intermediate equipment in which it is enclosed and which also extends in said direction, said intermediate unit being movable only in said direction relative to a front external unit extending in said direction and constituting said first peripheral component, and in that said intermediate unit is, in said deployed writing position, partially set back from said front exterior equipment, and, in said retracted position, in the fully extended position relative to said front exterior equipment.

According to one embodiment of the invention, said central assembly, said intermediate assembly, said first peripheral component, and said writing means are coaxial around a pivot axis parallel to said longitudinal direction.

According to one embodiment of the invention, said central equipment, said intermediate equipment, said first peripheral component, said second peripheral component and said writing means are coaxial around said pivot axis.

Brief description of the drawings [0011] Other characteristics and advantages of the invention will appear on reading the detailed description which follows, with reference to the accompanying drawings, where:

CH 709 388 B1

- fig. 1 shows, schematically and in longitudinal section view, a portable writing device constituting a particular application of the invention, in a first service position corresponding to the deployment of its content, constituted in this example by a cartridge of writing;

- fig. 2 shows, similarly to FIG. 1, the same writing device, in a second position corresponding to the retraction of its content;

- in fig. 1 are identified the fields corresponding to the details illustrated successively, from a so-called front end of the apparatus to a so-called rear end of the apparatus, by FIGS. 3 to 8;

- in the same way in fig. 2 are identified the fields corresponding to the details illustrated successively, from a so-called front end of the appliance to a so-called rear end of the appliance, by FIGS. 9 to 14;

- fig. 15 shows, schematically, in four views 15A, 15B, 15C, 15D, a closure cap comprising two guide yokes, one for guiding a radial drive carriage with a clip, and the other for the orientation of a tie;

- fig. 16 shows this maneuvering cart, schematically, in two views 16A, 16B;

- fig. 17 shows this drawing, schematically, in two views 17A, 17B.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention relates to a portable instrument, eclipsably containing at least one internal content, such as a writing means, a lighting means, a tool, a blade, a key, identification means, measurement means, sensor, or the like. This portable instrument comprises a container in at least two peripheral peripheral parts which are movable with respect to each other, capable of enclosing the content securely, both for the user and for this content.

The invention describes its particular, non-limiting application, to writing devices, such as stylographs, ballpoint pens, mechanical pencil, and the like.

More particularly, the invention relates to a portable writing device 1000 comprising at least one writing means 500 movable between a deployed writing position visible in FIG. 1, and a retracted position visible in FIG. 2.

According to the invention, this portable writing device 1000 comprises first means for transforming a relative pivoting movement applied to a first peripheral component 300 and a second peripheral component 400, which it comprises one and the other, in a longitudinal movement of this writing means 500, and / or of the second means of transformation of this same relative pivoting into a substantially radial movement of at least one third mobile component 600 which is still included in the portable device d 'writing 1000.

In a preferred embodiment and as visible in the figures, the portable writing device 1000 comprises a central equipment 100 containing this writing means 500.

This central equipment 100 extends in a longitudinal direction D, and is movable only longitudinally, in this same longitudinal direction D, relative to an intermediate equipment 200 that includes the portable writing device 1000.

This intermediate crew 200 extends in the longitudinal direction D, is movable only longitudinally, in this same longitudinal direction D, relative to the first peripheral component 300.

This intermediate equipment 200 is set back or outside this first peripheral component 300 in the deployed position or the retracted position respectively.

In a preferred configuration, and as visible in the figures, the central assembly 100, the intermediate assembly 200, the first peripheral component 300 and said writing means 500 are coaxial around a pivot axis A parallel to the longitudinal direction D.

More particularly, both the central crew 100, the intermediate crew 200, the first peripheral component 300, the second peripheral component 400 and the writing means 500 are coaxial around this pivot axis A.

According to the invention, the portable writing device 1000 comprises first means for transforming a relative pivoting movement applied to a first 300 and a second 400 peripheral components of this portable writing device 1000, into a longitudinal movement of this writing means 500, and / or in a substantially radial movement of at least one third mobile component 600 of this portable writing device 1000.

Preferably, the central crew 100 is enclosed in the intermediate crew 200, and the first peripheral component 300 is constituted by a front external crew, and contains the intermediate crew 200.

CH 709 388 B1 The end of the intermediate assembly 200 is, in the deployed writing position, partially set back from the first peripheral component 300, and, in the retracted position, is in the fully extended position relative to a front orifice 1A of this first peripheral component 300.

In a first embodiment of the invention, the portable writing device 1000 comprises at least these first means for transforming a relative pivoting movement applied to the first peripheral component 300 and to the second peripheral component 400, in a longitudinal movement of this writing means 500. The first peripheral component 300 and the second peripheral component 400 are graspable by a user, and extend in the same direction D around the longitudinal pivot axis A. The first component peripheral

300 and the second peripheral component 400 are pivotally movable relative to one another, and a relative pivoting movement imparted by a user allows, depending on the direction of pivoting, the expansion or retraction of at least one writing means 500 housed inside this portable writing device 1000.

The invention is described, for the sake of simplification, with a single content, such as this writing means 500. It also applies to multiple content, such as for example a pen comprising a barrel of cartridges d 'writing of several widths and / or colors.

In the illustrated embodiment, the first peripheral component 300 is a front external assembly 301, on a front side where the writing means 500 can project; and the second peripheral component 400 is a rear exterior body 401. By convention, the side where the writing means 500 shown on the left of the figures projects, and "rear" the opposite side shown on the right is called "front" In the figures, these adjectives will be used identically for all the components described below.

To trigger expansion or retraction, only counts the relative pivoting between this rear exterior body 401 and this front exterior equipment 301, and a user can, at his convenience, keep one or the other of these fixed. two sub-assemblies, or rotate them both.

The invention is illustrated with in two end positions corresponding to a relative pivot angle between the rear outer body 401 and the front outer crew 301, with a preferred, but not limiting, value of 180 °.

To make the writing means 500 operational, the user grasps the rear external body 401 by a cap 22, and grasps a barrel 2 which comprises the front external crew 301, and gives them a relative pivoting movement, relative to the longitudinal pivot axis A, along which also this barrel 2 and this cap 22 extend. The figures are represented in an operation where the user keeps the cap 22 fixed, and prints a pivoting on the barrel 2 .

If so the user drives the barrel 2 while maintaining fixed the cap 22, it therefore causes pivoting a barrel sleeve 9, which is mounted inside the barrel 2, and which has a first notch 91 A, and a second notch 91 B, which extend longitudinally in the longitudinal direction D, and in symmetry with each other with respect to the axis A. The first notch 91A and the second notch 91B guide respectively radial pins 8A and 8B.

The central crew 100 is here intended to receive the writing means 500, and in particular a cartridge 501, provided with a stylus 504 which constitutes the functional part thereof and which must be able to project from both the crew central 100 and the intermediate crew 200 in the writing position. This central assembly 100 comprises several tubular elements, extending in the direction D, preferably coaxial around the axis A, and screwed together, so as to allow its disassembly for the exchange of this cartridge 501. L 'one of these tubular elements is a front tube 7, which comprises two radial blind housings 71A and 71B of respective housing of these pins 8A and 8B.

Therefore, when the barrel sleeve 9 is pivoted, the pins 8A and 8B, driven by the notches 91A and 91 B, pivot the central crew 100, in accordance with the barrel 2 of l superior crew 300.

In the illustrated version, the central assembly 100 comprises, from front to rear, and assembled by threads and tappings of axis A, a tip body 4, a front tube 7, a tube central guide 13, and a rear tube 21.

According to the invention, the portable writing device 1000 also comprises, between the front external crew 301 and the central crew 100, an intermediate crew 200. This intermediate crew 200 extends in the direction D, and has a tip 3 serving both as a guide and as a means of protection by the writing means 500. In a manner specific to the invention, this intermediate assembly 200 is axially movable, in this longitudinal direction D, and according to a first longitudinal stroke with respect to the front external equipment 301, and with respect to the central equipment 100. In the writing position of FIG. 1, the end of the intermediate assembly 200 is partially set back from the front orifice 1A of the front exterior assembly 301, while in the retracted position of FIG. 2, this end is in the fully extended position relative to the front port 1A of the front exterior crew 301.

This intermediate equipment 200 comprises, assembled by screwing at the point 3, an internal tube 6 of axis D, which has two notches 61A and 61 B, which extend longitudinally in the longitudinal direction D, and in symmetry l 'from each other with respect to the axis A. The first notch 61A and the second notch 61B guide the radial pins 8A and 8B respectively. As a result, the central crew 100, the intermediate crew 200, and the forward outside crew

301 pivot synchronously.

In the illustrated version, the intermediate crew 200 comprises, from front to rear, and assembled by threads and tappings of axis A, a tip 3 and an internal tube 6.

CH 709 388 B1 In the illustrated version, the front external assembly 301 comprises, from front to rear, a front ring 1 comprising the front orifice 1A and driven into the barrel 2, and, and assembled by threads and tappings of axis A, this barrel 2, the barrel sleeve 9, and a barrel ring 11.

In the illustrated version, the rear outer body 401 comprises, from front to rear, and assembled by threads and tappings of axis A, a central ring 12, a threaded guide sleeve 15, and the cap 22. This cap 22 also carries, in the rear part, a closing plug 26 driven out and glued, as well as sealing, closing and covering elements such as a cap 32 or the like. A cap ring 16 is enclosed between the central ring 12 and the cap 22.

In variants not described here, this rear zone can be modified to integrate functional components such as a push button, a control crown, a pull tab, a removable plug, or the like. It is then possible to control other functionalities of the content, in particular the writing means, by selecting a parameter such as an output length, a color, or the like.

The central assembly 100 preferably comprises a central guide tube 13, which is here screwed to the front tube 7, and which comprises a single notch 130, which extends longitudinally in a longitudinal direction D.

The portable writing device 1000 comprises a cam 17, or respectively a transmission tube 14, integral with the first 300 or second 400 peripheral component, this cam 17, or respectively this transmission tube 14, cooperating with a tube transmission 14, or respectively a cam 17, pivotally controlled with the central equipment 100 and arranged to exert an action on the intermediate equipment 200 against an elastic return means

5, in particular a spring. The invention is described below in a particular, non-limiting variant, where the cam 17 of axis A and which comprises a ramp 170 is carried by the rear outer body 401, screwed into the cap 22 with which this cam 17 is therefore integral in pivoting.

More particularly, in the preferred embodiment illustrated, the portable writing device 1000 comprises a transmission tube 14, of axis A. This transmission tube 14 is mounted idly and trapped between, radially the central guide tube 130 of the central assembly 100 and the rear exterior body 401, and, longitudinally in direction D, between on the one hand a rear face 62 of the inner tube 6 of the intermediate equipment 200 with which rear end face 62 cooperates in abutment a first end 141 of the transmission tube 14, and on the other hand the ramp 170 of the cam 17.

On the side facing this cam ramp 170, which is in particular of helical profile or the like, the transmission tube 14 comprises an arm 140 extending in a direction parallel to the longitudinal direction D, and the distal end of which 142 is provided to come to bear on the cam ramp 170. This arm 140 comprises a finger 143 protruding from the side facing the axis A. This finger 143 cooperates with the notch 130 of the central guide tube 13.

A spring 5, arranged between a shoulder 2A of the barrel 2 and a front shoulder 63 of the inner tube 6, in a chamber 51 formed between the intermediate crew 200 and the outer crew before 301, tends to push the tube transmission 14 resting on cam 17.

Thus, the pivoting of the central assembly 100 and more particularly of the notch 130 of the central guide tube 13, relative to the cam 17, has the effect of modifying the longitudinal position of the transmission tube 14 relative to to the cam 17, and therefore to modify the longitudinal position of the intermediate assembly 200. The end of travel forwards of the transmission tube 14 corresponds to reaching a stop position between the notches 61 A, 61B of the intermediate tube

6, with the respective pins 8A and 8B.

In FIG. 1 showing an expansion position of the writing means 500, the spring 5 is in its greatest elongation, and the internal tube 6 is as close as possible to the cam 17, therefore, the tip 3 of the intermediate crew 200 is partially set back from the front orifice 1A of a front ring 1 that the front external assembly 301 comprises, at its front end which is opposite to the rear external body 401. In this position, a first front end 41, opposite to the rear outer body 401, a tip body 4 which comprises the central assembly 100 and which is screwed to the front tube 7 on the front side opposite to the rear outer body 401, comes into a stop position on an inner surface of support 31 that comprises the tip 3. In FIG. 2 showing the withdrawal position of the writing means 500, the spring 5 is in its greatest compression, and the internal tube 6 is at the furthest from the cam 17; the tip body 4 is then at a distance from the internal bearing surface 31, by the value of a withdrawal stroke of the writing means 500, which corresponds to the axial stroke of the transmission tube 14 relative to the cam 17.

On the rear side opposite to the tip body 4, the central assembly 100 includes a rear tube 21 screwed onto the central guide tube 13. This rear tube 21 has, on the rear side opposite to the tip body 4, a partition 213 having an internal bearing face 214 around a bore 215. The rear tube 21 encloses a tubular cam 20 comprising a similar partition 203 with an internal bearing face 204 around a bore 205. This tubular cam 20 comprises , on the side opposite to this partition 203, a flange 206, one rear face 207 of which cooperates in the support position with an internal shoulder 216 of the rear tube 21. The tubular cam 20 is pressed against the support face 214 of the rear tube 21 by a flange 191 of a tie rod 19. This tie rod 19 is held in abutment, by a nut 28 crushing an O-ring seal 27 in abutment on a rear face 261 of a closure cap 26 fixed, in particular by driving out and / or collage, o u other, to the cap 22 of the rear outer body 401. Advantageously, to prevent the pivoting of the tie rod 19,

CH 709 388 B1 this comprises two dishes 192 which cooperate with a guide 262 with parallel faces formed in a partition 263 of the closure cap 26.

The central equipment 100 includes an interior chamber 101 which receives, in its front part, the writing means 500, in particular a cartridge 501 in the nonlimiting example illustrated by the figures, and, in the rear part, a lug socket 18 partially guided in the tubular cam 20.

In its rear part receiving the tubular cam 20 and the lug socket 18, the rear tube 21 has no symmetry of revolution: it comprises, opposite a zone of greater section 217 delimiting l interior shoulder 216, a notch 212 extending longitudinally in the longitudinal direction D. This notch 212 is arranged to receive, in a single given angular position, a lug 181 which the lug socket 18 carries radially, so as to allow a disengagement stroke of the lug socket 18 towards the tubular cam 20 and towards the partition 213 of the rear tube 21, as visible in FIG. 2.

In the chamber 101 of the central assembly 100, a spring 503, bearing on the front side opposite the rear wall 213, tends to push the writing means 500, in particular a cartridge 501, pushing the lug socket 18 on the tubular cam 20. Preferably, the lug socket 18 comprises a flange 182 carrying an O-ring seal or the like and provided, on the front side, with a front toothing 183, intended to cooperate with a front toothing 505 making cam which generally comprises a standard refill cartridge 501.

Figs. 1 and 2 show a rear face 184 of the lug 181 of the lug socket 18 in frontal abutment respectively on a first end 208 and a second end 209 of a cam profile, helical or similar, of the tubular cam 20. In the case of fig. 1, the lug socket 18 is spaced as far as possible from the rear partition 213, and the writing means 500, in particular a stylet 504 of a cartridge 501 (here guided in the tip body 4 by means of a guide 502), is in the most advanced position possible, the spring 503 is compressed to the maximum, the point body 4 is in the position of maximum insertion into the point 3, and the stylet 504 constituting the front end of the means d 'writing 500 is then protruding with respect to a front orifice 3A that comprises the tip 3.

In the case of FIG. 2, the reverse configuration: the lug socket 18 is brought as close as possible to the rear partition 213, the lug 181 is in the notch 212 of the rear tube 21, and the writing means 500, in particular a cartridge 501, is in the most remote position possible, the spring 503 is relaxed as much as possible, the tip body 4 is in the minimum insertion position in the tip 3, and the stylet 504 is recessed with respect to the front orifice 3A of the tip 3. The axial stroke of the lug socket 81 relative to the tubular cam 20 thus constitutes a stroke for withdrawing or advancing the writing means 500.

It is understood that, according to the invention, the longitudinal movement of the intermediate body 200 and that of the lug socket 18 are simultaneous, and in the opposite direction: the cartridge 501 is pushed towards the exit when the intermediate crew 200 is retreated, and vice versa.

Preferably, the tip body 4 has four external radial lugs 43, which cooperate with four grooves 32 for orientation and stroke limitation that includes the tip 3, extending in the longitudinal direction D.

Preferably, the tip 3 has eight external facets 33, arranged to cooperate with eight internal facets 1B that includes the front ring 1.

In a second embodiment of the invention, which is advantageously cumulable with the first mode set out above, the portable writing device 1000 comprises second means for transforming a relative pivoting movement applied to two peripheral components 300, 400, of this portable writing device 1000, in a substantially radial movement of at least one third mobile component 600 of this portable writing device 1000.

In a particular application illustrated by the figures, this third movable component 600 is a clip 23, pivotally mounted by means of a pin 230 in a bore 231 of the clip 23, on a carriage 25, mounted in the rear external body 401. This carriage 25 comprises a housing 251 receiving the end of a clip spring 24 which tends to separate from the rear external body 401 a first end 232 of the clip 23, and to move closer to the external body rear 401, by leverage, around the pin 230, a second end 233 of the clip 23.

In a preferred implementation of the invention, and as shown in Figs. 1 and 2, the clip 23 is eclipsable in a housing 221 of the cap 22, during a relative pivoting movement between the rear external body 401 and the front external equipment 301.

To this end, the rear tube 21 has, at its rear wall 213, an eccentric bearing 211 eccentric with respect to a bore 215, which is coaxial with the pivot axis A and constitutes the guide of the tie rod 19 .

As explained above, the relative pivoting movement between the rear external body 401 and the front external equipment 301 causes the rear tube 21 to pivot about the axis A, and therefore of this range eccentric 211.

The carriage 25 has two parallel faces 255, and is slidably movable in a guide housing with parallel faces 265 that includes the plug 26. It comprises, around the axis A, a housing 253 of oblong section arranged to allow passage to the tie rod 19, in all the radial positions that the carriage 25 can occupy.

CH 709 388 B1 also has upper 254 and lower 256 bearing faces, on which the eccentric bearing 211 is supported to, respectively move away as in FIG. 2, or reconcile as in fig. 1, the clip 23 of the axis A, substantially parallel to this axis A. Thus, the clip 23 is eclipsed in the writing position, and deployed when the writing means 500 has returned to the body of the portable writing device 1000, thus guaranteeing user safety.

In the illustrated version, the carriage 25 slides radially relative to the axis D. An oblique sliding is achievable by the same means, insofar as the eccentric bearing 211 is of sufficient length to always be supported on the 'one of the upper support faces 254 and lower 256.

The invention is described in the particular case where the third mobile component 600 is a staple. This third component can consist of any component or object, functional and / or decorative, which one wishes to overshadow during the writing phase.

It is understood that, in the illustrated embodiment where are combined the first and second transformation of the relative pivoting movement printed on the first peripheral component 300 and the second peripheral component 400, in this single relative pivoting movement, both :

- removal or advancement of the intermediate body 200;

- the advancement or removal of the cartridge 500;

- the eclipsing or the deployment of clip 23.

Claims (8)

claims 1. Portable writing device (1000) comprising a writing means (500) movable between two deployed and retracted positions, characterized in that said portable writing device (1000) comprises first means for transforming a movement of relative pivoting applied to a first (300) and a second (400) peripheral components in a longitudinal movement of said writing means (500), and / or of second means for transforming said relative pivoting into a substantially radial movement of at least at least a third mobile component (600) of said portable writing device (1000), and in that it comprises a central equipment (100) containing said writing means (500), mobile only in said longitudinal direction (D) relative to an intermediate assembly (200) movable only in said longitudinal direction (D) relative to said first peripheral component (300), the end of said inter assembly medial (200) being set back or outside a front orifice (1 A) of said first peripheral component (300) in said deployed or respectively retracted position. 2. portable writing device (1000) according to claim 1, characterized in that said central equipment (100) extends in said longitudinal direction (D) in which it is only movable relative to said intermediate equipment (200) in which it is enclosed and which also extends in said direction (D), said intermediate assembly (200) being movable only in said direction (D) with respect to a front external assembly (301) extending in said direction (D ) and constituting said first peripheral component (300) and in that said intermediate assembly (200) is, in said deployed writing position, partially set back from said front exterior assembly (301), and, in said retracted position, in position fully extended relative to said forward exterior crew (301). 3. portable writing device (1000) according to claim 2, characterized in that said central equipment (100), said intermediate equipment (200), said front exterior equipment (301), and said writing means (500) are coaxial about a pivot axis (A) parallel to said longitudinal direction (D). 4. portable writing device (1000) according to claim 3, characterized in that said central equipment (100), said intermediate equipment (200), said front exterior equipment (301), said second peripheral component (400) and said writing means (500) are coaxial around said pivot axis (A). 5. portable writing device (1000) according to claim 3 or 4, characterized in that said two peripheral components (300; 400) are graspable by a user and extend in the same said longitudinal direction (D) around said longitudinal pivot axis (A), and are pivotally movable relative to each other so that a relative pivoting movement imparted by a user allows, depending on the direction of pivoting, the expansion or retraction of said writing means (500) housed inside said portable writing device (1000). 6. portable writing device (1000) according to claim 2, characterized in that said portable writing device (1000) comprises a cam (17), or respectively a transmission tube (14), integral with said first (300 ) or second (400) peripheral component, said cam (17) cooperating with a transmission tube (14), or respectively a cam (17), pivotally controlled with said central equipment (100) and arranged to exert an action on said intermediate crew (200) encountering an elastic return means (5). 7. portable writing device (1000) according to claim 6, characterized in that said portable writing device (1000) comprises said transmission tube (14), extending in said direction (D), which is mounted insane and prisoner between, radially a central guide tube (130) which comprises said central assembly (100) and a rear external body (400) constituting said second peripheral component, and, longitudinally in said direction (D), between a share an end face (62) of an internal tube (6) of said intermediate assembly (200), with which end face (62) abuts a first end (141) of said transmission tube (14), and d on the other hand a ramp (170) CH 709 388 B1 which comprises a cam (17), extending in said direction (D), and which is pivotally attached to said rear outer body (400), the transmission tube (14) comprising, on the side facing said ramp (170) an arm (140) extending in said direction (D), and the distal end (142) of which abuts on said ramp (170) under the action of a spring (5), said arm (140) comprising a finger (143) protruding from the side turned towards said axis (A) and which cooperates with a notch (130) of said central guide tube (13), so that any pivoting of said central equipment (100) relative to said cam (17) changes the longitudinal position of said transmission tube (14) relative to said cam (17), and therefore changes the longitudinal position of said intermediate assembly (200). 8. portable writing device (1000) according to claim 1, characterized in that said portable writing device (1000) comprises said second means for transforming a relative pivoting movement applied to said first (300) and to said second (400) peripheral components of said portable writing device (1000) in a substantially radial movement of at least said third mobile component (600) of said portable writing device (1000), under the action of an eccentric bearing (211) pivotally controlled about an axis (A) parallel to said longitudinal direction (D) by said relative pivoting for sliding movement of a carriage (25) with a single degree of freedom in abutment on said eccentric bearing (211) . CH 709 388 B1 CH 709 388 B1 CH 709 388 B1 CH 709 388 B1 1000 CH 709 388 B1 1000 91B 71B 8B 9 61B CH 709 388 B1 140 143 CH 709 388 B1 1000 'd- LD CH 709 388 B1 .1000 263 CH 709 388 B1 o O < CO CH 709 388 B1