TW201921228A - Flexible tip of a writing implement for digital handwriting recognition - Google Patents

Abstract

The invention relates to a writing implement tip (20) intended to be arranged in a writing implement end-piece, comprising a writing tip (22) and a connecting member (24) to the writing implement, the writing tip (22) and the connecting member (24) being connected by at least one arm (26). The writing tip (20) comprises a conical portion (28) provided with an apex (30) and a beveled portion (34) defining a free surface (34S) opposite the apex (30) of the conical portion (28). The arm (26) is made from a resiliently deformable material so as to allow travel of the writing tip (22) relative to the connecting member (24) when a force is applied on the free surface (34S) in a direction transverse to said free surface (34S).

Description

Flexible nib for a writing instrument for digital handwriting recognition

The invention relates to the field of writing instruments, such as pens. More specifically, the invention relates to a writing tool pen tip that is particularly intended to recognize a graphical gesture for handwritten digitization.

Writing tools combining a traditional writing function of ink with a graphic gesture recognition function for digitizing handwriting or digital handwriting recognition are known from the prior art.

To this end, some writing instruments include the following components: a pen tip that conveys ink at one end of the writing instrument; and a stylus pen that is connected to a sensor that allows digital writing recognition, the stylus pen being positioned at The opposite end of the writing instrument. Other writing instruments that combine the two functions include a single, identical nib that enables both ink delivery and digital recognition of the writing. However, these two types of writing instruments do have drawbacks.

In the first case, the writing experience is weakened for users who are forced to turn the pen frequently to use the writing function using digital ink and the digital writing recognition function. In the second case, the fact that the same nib enables two functions to be performed causes the ink delivered during writing with ink to remain on the nib during digital writing recognition. However, the presence of this ink can damage or soil the digital writing recognition media, which is most commonly the screen of a tablet or phone. To avoid this problem, it becomes necessary to use a special ink or to have a specific device for conveying the ink. Then, standardized ink cartridges can no longer be used unless the size of the writing instrument is increased. Finally, these devices cannot avoid any risk of ink remaining on the pen tip.

Therefore, preferably, the user can have a writing tool having one of two separate nibs for performing the traditional writing function and the digital writing recognition function without changing the writing experience of the user.

Writing instruments including a plurality of retractable nibs are also known from the prior art. However, associated institutions occupy significant space in writing instruments. This prevents the placement of electronic components related to graphic gesture recognition therein without significantly increasing the volume of the writing instrument body, which changes the user's writing comfort and the aesthetics of the writing instrument. Therefore, these traditional mechanisms are not suitable for a combination of a traditional writing function of ink and a writing tool for graphic gesture recognition of handwriting digitization.

Therefore, the present invention intends to solve these shortcomings by proposing a writing tool pen tip intended to be disposed in a writing tool end piece, which includes a writing pen tip and a connecting member to the writing tool, and the writing pen tip and the connecting member can At least one arm is connected, wherein the writing pen tip includes a conical portion having a vertex and an inclined portion defining a free surface opposite to the vertex of the conical portion, and wherein the at least one arm is deformed by a flexibility Made of material and structurally designed to allow the writing pen tip to travel relative to the connection member when a force is applied to the free surface in a direction transverse to the free surface.

Because the nib according to the present invention includes an inclined portion defining a free surface opposite to the conical portion and the arm of the nib is deformed to allow the writing nib relative to the connecting member when a lateral force is applied to the free surface Traveling, so that the writing instrument nib according to the present invention can be accommodated in the end piece of a writing instrument together with a conventional nib. In fact, it may be provided that during its travel away from the writing instrument, a pre-existing nib applies a force to the free surface in order to cause the nib according to the invention to travel, thereby moving away as it passes.

Therefore, it becomes possible to attach an additional nib intended for digital handwriting recognition to a writing instrument's conventional writing nib using ink to give the user a similar experience by using two nibs. The present invention can also be used in combination with another type of writing nib, such as a felt pen nib, a pencil nib, a mechanical pencil, and the like.

According to a preferred embodiment, the travel of the writing pen tip is a translation of the writing pen tip along one of the radial directions with respect to an axis of rotation of the conical portion.

According to another preferred embodiment, the arm is a blade comprising a straight member at its end closest to the writing tip and a curved member defining a concave surface at its opposite end. The blade form gives the arm flexibility to facilitate travel. In addition, the concave surface makes it possible to define a volume in which another pen tip of the writing instrument can be housed.

Advantageously, to further simplify the manufacture of the pen tip, the conical portion of the writing instrument is provided with a base, and an inclined portion protrudes from the base of the conical portion.

Preferably, to further simplify the manufacture of the pen tip, the arm is an extension of the inclined portion.

According to a specific embodiment of the present invention, the connecting member includes a connecting ring integral with the arm, and the hole of the connecting ring has a diameter that allows a component of another pen tip of the writing instrument to pass through. This particular structural design makes it possible to reduce the space occupied by the assembly formed by the nib according to the present invention and a pre-existing nib of a writing instrument. In addition, the surface of the attachment ring is useful as a support for a pen tip on another element of the writing instrument. This element may be associated with a force sensor, for example.

Preferably, in order to simplify the manufacture of the pen tip, the connecting ring includes an outer wall, the arm is integrated with the outer wall and extends along the outer wall.

According to another specific embodiment of the present invention, the connecting member includes a connecting hole formed at an end of the arm opposite to the writing pen tip. This particular structural design makes it possible to reduce the space occupied by the assembly formed by the nib according to the present invention and a pre-existing nib of a writing instrument. In addition, the hole can receive a pin belonging to another element of the writing instrument. This element may be associated with a force sensor, for example.

Preferably, the writing nib is made of a polymer, such as polyoxymethylene. In fact, polymers have traditionally been used to produce styluses intended for digital handwriting recognition because they avoid scratching the writing medium composed of the screen. Polyoxymethylene is particularly easy to process or mold and has mechanical properties suitable for this purpose.

According to a particular embodiment, the material of the writing nib is filled with particles made of a conductive material, such as carbon. For specific applications, adding these particles to the polymer that makes the nib makes it possible, for example, to make them conductive when associated with a force sensor.

Advantageously, in order to simplify the manufacture of the writing instrument nib, the arm is integrated with the writing nib. It can therefore be provided that the arm itself is also made of a polymer and preferably of polyoxymethylene, which can be filled, for example, with carbon particles. This material is indeed very suitable for obtaining a flexible deformable arm to allow the writing pen tip to travel relative to the connecting member when a force is applied to the free surface in a direction transverse to the free surface.

In an alternative, the arm is made of a material different from the material of the writing tip.

According to a preferred embodiment of the present invention, the writing instrument nib is a nib of a stylus pen which is intended to be used for handwritten digital gesture recognition.

The invention also relates to an assembly formed by a writing instrument and a writing instrument nib, wherein the nib is a nib according to the present invention.

According to a preferred embodiment of the present invention, the writing instrument extends along a longitudinal axis, and the travel of the writing pen tip with respect to the connecting member travels radially with respect to one of the longitudinal axes of the writing instrument.

1 to 4 show a writing implement pen tip 20 according to a first embodiment of the present invention. The writing instrument nib 20 is intended to be disposed in a writing instrument end piece 21 (visible in FIGS. 3 and 4), and the writing instrument end piece 21 is then intended to be inserted into a writing instrument body (not shown in the figure). In the embodiment shown in the figure, the writing tool pen tip 20 is a stylus pen tip intended to be used for hand gesture digitized graphic gesture recognition.

As can be seen in detail in FIGS. 1 and 2, the writing tool tip 20 includes a writing pen tip 22 and a connecting member 24 to the writing tool. The writing pen tip 22 and the connecting member 24 are connected by an arm 26.

The writing nib 22 includes a conical portion 28 (preferably turned), which is provided with a base portion 30 and a vertex 32. Vertex 32 is a component of writing tip 22, which is intended to be in contact with a writing medium, which may be, for example, a screen of a tablet computer, a phone, or the like. To this end, the conical portion 28 is preferably made of a polymer. In fact, polymers have traditionally been used to produce styluses intended for digital handwriting recognition because they avoid scratching the writing medium composed of the screen.

Preferably, the selected polymer will be polyoxymethylene, which is easy to process or mold and has mechanical properties suitable for the forces experienced by the writing tip 22. For specific applications, especially when the writing tool tip 20 is associated with a force sensor (as will be seen later), particles are added to the polyoxymethylene to make the writing tip conductive.

The writing pen tip 22 further includes an inclined portion 34 that defines a free surface 34S opposite the vertex 32. More specifically, the inclined portion 34 protrudes from the base portion 30 of the conical portion 28. The free surface 34S is substantially planar to facilitate the application of a force to this surface. The free surface 34S and the base 30 of the conical portion 28 define an angle comprised between 40 and 50 degrees. In the embodiment shown in FIGS. 1 to 4, the free surface 34S is defined by a substantially parabolic contour 34C.

In the embodiment shown in FIGS. 1 to 4, the arm 26 connecting the writing pen tip 22 to the connecting member 24 is an extension of one of the inclined portions 34. Preferably, in order to simplify the manufacturing thereof, the arm 26 is integrated with the inclined portion 34. In this case, the writing instrument nib 20 will preferably be injection molded. However, it is considered that the writing pen tip 22 and the arm 26 are made of different materials and assembled. Thus, the arm 26 may be made of, for example, one of the advantages of being sufficiently flexible and strong for this purpose, such as a conductive metal material, such as steel or aluminum.

As we will see later, regardless of the material chosen to make the arm 26, it is flexible so as to allow the writing tip 22 relative to the free surface 34S when applied with a force in a direction transverse to the free surface 34S. The connecting member 24 travels.

In the embodiment shown in FIGS. 1 to 4, the blade 26 includes a straight member 35 at its end closest to the writing tip 22 and a curved member 36 at its opposite end defining a concave surface 37. . The concave surface 37 defines a space provided to be able to accommodate another writing tip, as will be described later. The transition between the blade straight member 35 and the blade curved member 36 is continuously performed.

In this first embodiment, the curved blade 26 has a substantially triangular cross section. Thus, the curved blade 26 includes an outer surface 38 (ie, oriented substantially opposite the free surface 34S, substantially planar) and an inner surface 39 (ie, oriented, inclined relative to the free surface 34S). However, in an alternative, the cross section of the curved blade 26 may be different, such as substantially rectangular, as in the second embodiment illustrated in FIGS. 7 and 8, which will be described later.

A first end of one of the blades 26 (which is the end of the straight member 35) is connected to the writing pen tip 22 and, in the present case, to the inclined portion 34, where it is an extension. The other end of the blade 26 (which is the end of the curved member 37 opposite to the writing pen tip 22) is connected to the connecting member 24.

In the embodiment shown in FIGS. 1 to 4, the connecting member 24 includes a connecting ring 40 integrated with the arm 26. Therefore, the bending member 37 is connected to the connection ring 40 via. More specifically, the connecting ring includes an outer wall 40E, that is, the wall of the ring 40 opposite the hole 42 of the ring, and the arm 26 is integrated with the outer wall 40E and extends along the outer wall 40E. The curved part 37 therefore extends along the outer wall 40E of the connection ring 40. To allow the maximum travel of the arm 26 in the available volume defined by the inside of the end piece 21, the diameter of the ring 40 will preferably be selected so that the outer wall 40E is flush with the inner wall of the base of the end piece 21, i.e. it will approach On the inner wall of the base of the end piece 21.

The diameter of the hole 42 of the ring is selected to allow passage of components such as the nib 44 of a conventional writing instrument that conveys ink. In fact, as shown in FIGS. 3 and 4, the writing instrument nib 20 is structurally designed so that it can be accommodated in the end piece 21 of a writing instrument together with a conventional writing instrument nib 44 that conveys ink.

Here, the writing instrument end piece 21 is a substantially conical conventional end piece having one of the channel holes 46 at its apex. At the end opposite the passage hole 46, the end piece 21 is annular and is provided with a pitch 48 on its periphery, for example, to fasten it to a writing instrument body. However, it can be provided that this one end piece 21 is connected to the writing instrument body in another way, for example by being forcibly inserted therein. The end piece 21 defines an internal volume V, in which both the writing tool tip 20 and the conventional pen tip 44 are housed.

The conventional nib 44 shown in FIGS. 3 and 4 is known per se from the prior art. The conventional nib 44 includes a writing nib 50 (which may include, for example, a ball 51) using one of the inks and an ink container 52. The writing nib 50 using the ink forms an extension of the container 52. In other alternatives not shown, the traditional nib 44 does not necessarily have ink. The traditional nib 44 may particularly involve a felt pen nib, pencil, mechanical pencil, or the like. Here, the container 52 is cylindrically turned and its cross section has a constant diameter over its entire length. However, it goes without saying that a conventional nib 44 or magazine may include a diameter variation of one of the cross sections of its container 52, such as the end of the container 52.

As shown in FIGS. 3 and 4, in order to reduce the volume in the writing instrument end piece 21, the container 52 is inserted into the hole 42, and the diameter of the hole 42 is selected for this purpose. In the example shown in FIGS. 3 and 4, the hole 42 has a diameter larger than the diameter of the cross-section of the container 52. In the case where the cross-sectional diameter of a container has a variation, the diameter of the hole 42 is provided so that the end of the container 52 closest to the writing pen tip 50 using ink can enter the hole 42.

Further, in this first embodiment of the present invention, the connection ring 40 is connected to one of the storage members 54 of the writing instrument so as to be translationally fixed with the storage member 54. The storage member may be, in particular, a component of a force sensor or directly connected to a force sensor, the force sensor being applied by a writing force in response to a pressure exerted on the surface by a user via the writing pen tip 22 The force is sensitive.

In this particular embodiment shown in FIGS. 3 and 4, the receiving member includes a ring (referred to as a receiving ring) having an outer diameter substantially the same as that of the connecting ring 40. In addition, the diameter of the hole 56 of the receiving ring 54 allows a conventional nib 44 to be inserted therein.

FIG. 3 illustrates the structural design of the assembly formed by the writing instrument nib 20, the traditional nib 44 and the end piece 21. One user can use the writing instrument nib 20 to write. In the following, this structural design will be referred to as a digital identification structural design.

In the digital identification structure design, the conical portion 28 of the writing instrument pen tip 20 protrudes from the end piece 21 through the channel hole 46. The end of a conventional nib 44 including a nib 50 using ink is accommodated in a concave surface 37 defined by a curved member 36 of an arm 26. In this structural design, the arm 26 of the writing instrument nib 20 is therefore idle, that is, the arm 26 does not undergo any flexible deformation. In practice, the conventional nib 44 does not apply pressure to the arm 26.

FIG. 4 illustrates the structural design of the assembly formed by the writing tool tip 20, the conventional pen tip 44, and the end piece 21. One user can use the traditional pen tip 44 to write. In the following, this structural design will be referred to as the traditional writing structural design.

In this traditional writing structure design, the ink nib 50 of the traditional nib 44 protrudes from the end piece 21 through the passage hole 46. Here, the arm 26 is flexibly deformed such that it is radially separated from the longitudinal axis XX of the end piece 21, and the longitudinal axis XX of the end piece 21 corresponds to the axis of symmetry of the conical end piece. The upper corresponds to the axis of symmetry of the writing instrument, which is perpendicular to the surface defined by the channel hole 46. Therefore, the arm 26 also moves radially away from the longitudinal axis of the conventional pen tip 44, which conventionally coincides with the longitudinal axis X-X.

In this conventional writing structure design, the arm 26 has therefore given way to the traditional nib 44 and the writing nib 22 rests against the traditional nib 44. Therefore, the conventional nib 44 makes it useful as a stop against the flexible restoring force 26 of the writing instrument nib 20, which tends to cause it to return to its rest position.

In order to enter the traditional writing structure design from the digital writing structure design, the traditional nib 44 has been used to move along the longitudinal axis X-X toward the passage hole 46 without describing and understanding mechanical members known to those skilled in the art. In so doing, the ink nib 50 encounters the free surface 34S of the inclined portion 34 of the writing instrument nib 20 as it travels. Therefore, the pen tip 50 using the ink applies a force to the free surface 34S in a direction transverse to the surface.

However, as we have seen from the above, the arm 26 is made of a flexible deformable material and is structurally designed to allow a writing tip when a force is applied to the free surface in a direction transverse to the free surface 34S. Traveling with respect to the connection member 24. More specifically, the travel of the writing nib 22 is a translation of the writing nib 22 in one of the radial directions with respect to one of the rotation axes of the conical portion 28. Therefore, in this first embodiment of the present invention, the traveling system is translated in one of the directions of the longitudinal axis X-X in the radial direction.

In a second embodiment of the present invention shown in FIGS. 5 and 6, the connecting member 24 is no longer a connecting ring 40 but a connecting hole at the end of the arm 26 opposite to the writing tip 22. 58. The arm 26 is similar to one of the other blades of the first embodiment, except that the blade has a substantially rectangular cross-section such that the outer surface 38 and the inner surface 39 of the blade are substantially planar and parallel to each other.

Here, the connection hole 58 traverses the arm 26 all the way. The connection hole 58 allows, in particular, a pin connection to belong to a component (not shown) for accommodating a writing instrument instead of the accommodating ring 54. In this case, the pin is inserted into the connection hole 58 to provide a connection between the arm 26 and the storage member.

In this second embodiment, the arm 26 is preferably made of a material different from that of the writing pen tip 22. The arm 26 is therefore made of steel or aluminum, for example, and the writing tip 22 is preferably made of a polymer, such as polyoxymethylene.

In a third embodiment of the present invention shown in FIGS. 7 to 9, the arm 26 is replaced by two branches 60 connected to a connection ring 40. Here, the connecting ring 40 is similar to the connecting ring of the first embodiment of the present invention shown in FIGS. 1 to 4.

In particular, as shown in FIGS. 7 and 8, each branch 60 is a blade, including a straight piece 62 at its end closest to the writing tip, and one of its opposite ends defining a concave surface 66. Bent member 64.

Each branch 60 is connected to a connection ring 40 at a connection end 68, and each branch 60 is integrated with the connection ring 40. More specifically, similar to the arm 26 of the first embodiment of the present invention, the branch 60 is an extension of the outer surface 40E of the connection ring.

In this third embodiment of the present invention, the writing nib 22 is composed of two half nibs 70, and the two half nibs 70 are respectively located at a free end of each branch 60 opposite to the connection end 68. Each half nib 70 includes a half conical portion 72 at its free end. Here, a half-cone refers to a half-cone that is cut in the direction of its height. Accordingly, the semi-conical portions 72 each define a free semi-conical surface 72S that is placed substantially across one another.

The half nib 70 further includes an inclined portion 74 that defines a free surface 74S opposite the vertex 76 of each half cone 72. The semi-conical free surface 72S extends in a plane of symmetry of a cone formed by the assembly of the two semi-cones 72.

The two half pen tips 70 are symmetrical with respect to a plane parallel to a plane parallel to the free surface 72S and pass through the longitudinal axis of the connecting ring 40.

As shown in FIG. 9 (which shows the writing structure design of one of the writing instrument nibs 20), the writing nib 22 is formed by placing a free semi-conical surface 72S in surface contact. This contact placement is particularly possible when the half-tip nib 70 is inserted into the end piece of a conical writing instrument as shown in FIGS. 3 and 4.

In fact, like the arm 26, the branch 60 is made of a flexible deformed material and is structurally designed to allow a half-tip 70 to be opposed when a force is applied to the free surface 74S in a direction transverse to the free surface 74S. The connecting member 24 travels.

Thus, the flexibility of the two branches 60 allows them to be brought closer together, so that the free semi-conical surface 72S is placed in contact and the semi-conical 72 forms a cone similar to one of the conical portions 28 of the previous embodiment. In addition, and similar to the previous embodiment, when a conventional nib-using nib encounters a free surface 74S as it travels and a lateral force is applied thereto, the branches 60 deform to separate from each other and thus to half the nib The 70s are separated from each other to allow a conventional nib to pass.

In a fourth embodiment of the present invention shown in FIG. 10 and FIG. 11, the writing tool pen tip includes two branches 60 connected to a connecting ring 40, and the writing pen tip 22 is composed of two half pen tips 70. A third embodiment of the present invention is similar to that shown in FIGS. 7 to 9. In contrast, the free surface 74S of the half nib 70 is provided with a member 78 for locking in the writing position, so that it is possible to facilitate maintaining the contact of the free half-conical surface 72S when the writing nib 22 is in the writing position.

More specifically, the locking member 78 includes, on the one hand, a locking cavity 80 formed in one of the free half-conical surfaces 72S of one of the two half nibs 70, and on the other, includes a projection protruding from the free surface 74S of the other half of the nib 70.一 突 部 82。 A projection 82. The protrusion 82 and the cavity 78 are structurally designed so that the protrusion 82 can be inserted into the cavity 78 when the free semi-conical surface 72S surface contacts.

In the embodiment shown in FIGS. 10 and 11, the cavity 78 is hemispherical and the protrusion is hemisphere, with a diameter selected to allow the protrusion 82 to be inserted into the cavity 78. In other alternatives not shown, the protrusions 82 may be cylindrical or conical, and the shape of the cavity 78 is a corresponding shape.

Further, in this third embodiment, the straight member 62 of each branch 60 includes a thinner member 84 at its end closest to the inclined portion 74. The thinner part 84 makes it possible to increase the flexibility of this end of the straight part 62 and therefore, to produce a pivoting effect during the passage of a conventional nib, thereby facilitating the joining and separation of the two half nibs 70.

In addition, in this third embodiment, the writing instrument pen tip 20 includes two reinforcing ribs 86 that connect the connecting ring and the curved parts 64 of the branches. These reinforcing ribs 86 are preferably integrated with the bending members 64 on the one hand, and integrated with the connecting ring 40 on the other hand.

Naturally, the examples depicted in the figures and discussed above are provided for illustration only and are non-limiting. Various alternatives can be considered.

In particular, it is explicitly provided that different illustrated embodiments can be combined to suggest other embodiments.

It should be emphasized that those skilled in the art understand from the present invention that all features of the accompanying drawings and the scope of the patent application for the invention, even if they are specifically described in combination with other specific features (individually and in any combination), can still Other features or combinations of groups of features disclosed herein, as long as this is not explicitly excluded or the technical environment does not make such combinations impractical or meaningless.

20‧‧‧ writing tool nib

21‧‧‧ writing instrument end piece

22‧‧‧ Writing nib

24‧‧‧Connecting member

26‧‧‧arm / blade / flexible restoring force

28‧‧‧ Conical section

30‧‧‧ base

32‧‧‧ Vertex

34‧‧‧ Inclined

34C‧‧‧ Parabola contour

34S‧‧‧Free Surface

35‧‧‧Straight parts

36‧‧‧ Bent parts

37‧‧‧ concave

38‧‧‧ outside

39‧‧‧ inside

40‧‧‧ connecting ring

40E‧‧‧outer wall

42‧‧‧hole

44‧‧‧ writing tool nib

46‧‧‧channel hole

48‧‧‧ pitch

50‧‧‧ Writing nib using ink

51‧‧‧ball

52‧‧‧ Ink Container

54‧‧‧Storage member / Storage ring

56‧‧‧hole

58‧‧‧Connecting hole

60‧‧‧arm / branch

62‧‧‧Straight parts

64‧‧‧ Bent parts

66‧‧‧Concave

68‧‧‧Connector

70‧‧‧ Half nib

72‧‧‧ half cone

72S‧‧‧Free semi-conical surface

74‧‧‧ Inclined

74S‧‧‧Free Surface

76‧‧‧ Vertex

78‧‧‧ lock member

80‧‧‧ lock cavity

82‧‧‧ protrusion

84‧‧‧ thinner parts

86‧‧‧ rib

X-X‧‧‧ 迴 Spindle

Other features and advantages of the present invention will appear from reading the following description with reference to the accompanying drawings, in which:-FIG. 1 is a perspective view of a writing tool pen tip according to a first embodiment of the present invention;-FIG. 2 is a writing of FIG. 1 A side view of one of the tool nibs;-Fig. 3 is a perspective view of the writing tool nib of Fig. 1 and a perspective view of one of the writing tool nibs according to the present invention, shown in a sectional view, housed in a writing instrument end piece; The writing instrument nib has a first structural design;-Fig. 4 is a view similar to Fig. 3, wherein the writing instrument nib according to the present invention has a second structural design;-Fig. 5 is a second embodiment according to the present invention A perspective view of a writing instrument nib;-Fig. 6 is a side view of a writing instrument nib of Fig. 5;-Fig. 7 is a perspective view of a writing instrument nib according to a third embodiment of the present invention; 8 is a side view of one of the writing instrument nibs of FIG. 7;-FIG. 9 is a view similar to that of FIG. 8 with the writing instrument nib showing a writing structure design;-Fig. 10 The perspective view of one tip of the writing instrument, one embodiment of the present invention, one of a fourth embodiment; Figure 11 - view from line 10 is similar to one another view of FIG.

Claims (15)

A writing instrument nib (20) intended to be arranged in a writing instrument end piece (21), comprising a writing nib (22) and a connecting member (24) to the writing instrument, the writing pen tip (22) and the connecting member (24) connected by at least one arm (26; 60), wherein the writing nib (22) includes a conical portion (28; 72) having a vertex (32; 76) and the The vertex (32; 76) is opposite to an inclined portion (34; 74) of a free surface (34S; 74S), and wherein the at least one arm (26; 60) is made of a flexible deformable material and structurally designed In order to allow the writing pen tip (22) to travel relative to the connection member (24) when a force is applied to the free surface (34S; 74S) in a direction transverse to the free surface (34S; 74S). For example, the writing instrument nib (20) of claim 1, wherein the advance of the writing nib (22) is one of the writing nib (22) along one of the axis (XX) of rotation relative to the conical portion (28; 72). One of the radial directions translates. If the writing instrument nib (20) of claim 1 or 2, wherein the arm (26; 60) is a blade, includes a straight part (35; 62) at its end closest to the writing nib and is opposite A curved part (36; 64) defining a concave surface (37; 66) is included at the end. For example, the writing instrument nib (20) of claim 1 or 2, wherein the conical portion (28; 72) of the writing instrument (22) is provided with a base portion (30), and the inclined portion (34; 74) is from the conical shape. The base (30) of part (28; 72) protrudes. For example, the writing instrument nib (20) of claim 1 or 2, wherein the arm (26; 60) is an extension of the inclined portion (34; 74). For example, the writing instrument nib (20) of claim 1 or 2, wherein the connecting member (24) includes a connecting ring (40) integrated with the arm (26; 60), and the hole (42) of the connecting ring has a permission The component of the other nib (44) of the writing instrument passes through a diameter. For example, the writing instrument pen tip (20) of claim 6, wherein the connecting ring (40) includes an outer wall (40E), and the arm (26; 60) is integrated with the outer wall (40E) and extends along the outer wall (40E). For example, the writing tool nib (20) of claim 1 or 2, wherein the connecting member (24) includes a connecting hole (58) formed by the arm (26; 60) and the writing nib. (22) At the opposite end. The writing instrument nib (20) of claim 1 or 2, wherein the writing nib (22) is made of a polymer, such as polyoxymethylene. The writing instrument nib (20) of claim 9, wherein the material of the writing nib (22) is filled with particles made of a conductive material, such as carbon. For example, the writing instrument nib (20) of claim 1 or 2, wherein the arm (26; 60) is integrated with the writing nib (22). For example, the writing instrument nib (20) of claim 1 or 2, wherein the arm (26; 60) is made of a material different from the other material of the writing nib (22). For example, the writing instrument nib (20) of claim 1 or 2, wherein the writing instrument nib (22) is a nib of a stylus pen intended to be used for handwritten digital gesture recognition. An assembly formed by a writing instrument and a writing instrument nib (20), wherein the nib (20) is according to any one of the preceding claims. If the assembly of claim 14, wherein the writing instrument extends along a longitudinal axis, the travel of the writing pen tip (22) relative to the connecting member (24) travels radially with respect to one of the longitudinal axes (X-X) of the writing instrument.