CN109696969B

CN109696969B - Strengthened disc type pen point

Info

Publication number: CN109696969B
Application number: CN201710984456.XA
Authority: CN
Inventors: 范成玮; 李岳桦
Original assignee: Adonit Co ltd
Current assignee: Adonit Co ltd
Priority date: 2017-10-20
Filing date: 2017-10-20
Publication date: 2022-08-16
Anticipated expiration: 2037-10-20
Also published as: CN109696969A

Abstract

The invention discloses a reinforced disc-type pen point, which comprises a reinforcing ring, a disc-shaped flat plate, a ball column and a touch layer set, wherein the reinforcing ring is arranged on the disc-shaped flat plate; the strengthening ring is provided with a ring body, an upper ring edge, a lower ring edge corresponding to the upper ring edge and an inner edge extending inwards from the upper ring edge; the disc-shaped flat plate comprises an upper flat plate surface, a lower flat plate surface and a conical accommodating part which extends upwards from the center of the upper flat plate surface; the conical accommodating part comprises an accommodating channel; the ball column is provided with a ball head and a column body part, and the ball head can be rotatably inserted into the accommodating channel; the cylinder part extends upwards through the conical accommodating part and is electrically coupled with the touch pen; the touch layer set is arranged on the surface of the lower flat disc and is electrically coupled with the spherical head; the touch layer set, the conical receiving portion and the inner edge keep the spherical head in the receiving channel during the rotation movement of the spherical head; the reinforced disc-type pen point can avoid the accidental loosening of the disc-shaped flat plate during use, and can achieve the effects of clear visibility of end points and accurate coordinate judgment.

Description

Strengthened disc type pen point

Technical Field

The present invention relates to a disk pen head, and more particularly to a reinforced disk pen head capable of controlling a touch pen and a capacitive touch sensing device.

Background

Existing touch pens are often used as an input device to perform a variety of functions by contacting or approaching a touch sensitive device, such as a touch screen surface of a tablet computer, mobile device, tablet, and other suitable devices. When an object touches or approaches the surface of a touch sensing device, particularly a capacitive touch sensing device, a capacitance change is generated in the touch screen where capacitive coupling is formed after touch or approach. A touch-sensitive controller can process the capacitance change to determine the coordinates of the object on the touch screen and calculate the orientation (e.g., azimuth and tilt angle) to perform operations such as writing, drawing, painting, or selecting on the screen with a stylus tap.

Several stylus techniques have been developed with the ability to determine coordinates to calculate orientation. Some techniques detect capacitance from one or more locations of the stylus relative to a surface of the touch sensing device, then use the capacitance to determine its coordinates, and calculate the orientation of the stylus relative to the surface. Other techniques can attach a conductive pad to a tip of the stylus to ensure that capacitive coupling occurs between the stylus and the touch screen surface of the touch sensing device.

For a stylus with conductive pads, in some techniques, a pivoting connector, such as a ball stud, is used to assemble the stylus to the conductive pads. Therefore, when the user uses the touch pen, the conductive disc and the touch screen surface of the touch sensing device can be kept flush.

However, when using such a stylus, the conductive disc is often accidentally released from the ball stud, for example when the ball stud is rotated to its maximum angle. In this case, the pull-out force of the ball stud, which is the force the ball stud is subjected to in the axial/radial direction to separate it from the conductive disc, is reduced. As a result, accidental loosening thereafter occurs more and more frequently. In addition, since the conductive pad is small in size and the end points of the conductive pad are clearly visible for the convenience of a user, the conductive pad may not be visible when the conductive pad is accidentally released. Therefore, the conductive plate must be replaced, which increases the cost of the user.

In view of the above, there is a need for a strong dish-type pen tip to solve the above problems.

Disclosure of Invention

One objective of the present invention is to provide a reinforced disc-shaped pen head suitable for operating various touch pens and various capacitive touch sensing devices.

To achieve the above object, the present invention provides a reinforced disc-shaped pen tip for use with a touch pen, the reinforced disc-shaped pen tip comprising a reinforcing ring, a disc-shaped plate, a ball stud and a touch layer set. The reinforcing ring has a ring body, an upper rim connecting the ring body, a lower rim corresponding to the upper rim, and an inner rim extending inwardly from the upper rim. The disc-shaped flat plate comprises an upper flat plate surface, a lower flat plate surface corresponding to the upper flat plate surface and a conical accommodating part extending upwards from the center of the upper flat plate surface, wherein the conical accommodating part comprises an accommodating channel with a circular cross section. The ball column is provided with a spherical head and a column body part connected with the spherical head, and the spherical head can be rotatably inserted into the accommodating channel. The cylindrical portion extends upwards through the conical accommodating portion and is electrically coupled with the stylus. The touch layer set is arranged on the surface of the lower flat disc and is electrically coupled with the spherical head. The touch layer set, the tapered receptacle and the inner rim retain the spherical head within the receiving channel during rotational movement of the spherical head.

The invention also has the effect that the reinforcing ring can prevent the disc-shaped flat plate from accidentally loosening during the use of the ball column. In addition, when the disk-shaped flat plate is injection-molded, the reinforcing ring has both a supporting inner flange and a supporting outer flange having high bonding strength and an annular groove integrally molded with the disk-shaped flat plate. Thus, the pull-out force of the ball stud is increased, i.e. the pull-out force refers to the force the ball stud is subjected to in the axial/radial direction before separating its spherical head from the disc-shaped plate.

When the stylus is in contact with and moves along the surface of the touch screen of the touch sensing device, the disk-shaped plate can provide a user with more natural and less-laborious feelings of increased sensitivity (e.g., clear field of view (no shadow points), sharp endpoint recognition, no delay, no wavy lines, etc.) for drawing thin lines, through clear visibility of endpoints and accurate coordinate determination, thereby increasing the experience of the stylus. The reinforced disc-type pen point of the present embodiment is suitable for increasing the sensitivity of the stylus pen when drawing thin lines, and also can prolong the service life of the stylus pen through the reinforcing ring, so as to avoid separation due to the gradually increased pulling force between the ball stud and the disc-shaped plate, wherein the pulling force refers to the axial/radial force acting on the disc-shaped plate and/or the long-term use. Furthermore, the replacement costs are reduced, the use of maximum rotation angles is assured and loosening is avoided, and end point clear visibility and accurate coordinate determination are still achieved.

Drawings

FIG. 1 is a schematic diagram of a preferred embodiment of the present invention in use with a stylus.

FIG. 2 is a cross-sectional view of a preferred embodiment of the present invention.

FIG. 3A is a perspective view of a preferred embodiment of the stiffener ring of the present invention.

FIG. 3B is a cross-sectional view of a preferred embodiment of the stiffener ring of the present invention.

FIG. 4A is a perspective view of another preferred embodiment of the stiffener ring of the present invention.

FIG. 4B is a cross-sectional view of another preferred embodiment of the stiffener ring of the present invention.

FIG. 5A is a cross-sectional view of a preferred embodiment of the disk shaped plate of the present invention.

FIG. 5B is a cross-sectional view of another preferred embodiment of the disk plate of the present invention.

FIG. 6A is a perspective view of a preferred embodiment of a ball stud of the present invention.

FIG. 6B is a perspective view of another preferred embodiment of the ball stud of the present invention.

FIG. 7 is a perspective view of the preferred embodiment of the present invention.

Fig. 8 is an exploded perspective view of a preferred embodiment of the present invention.

FIG. 9 is a perspective cross-sectional view of a preferred embodiment of a touch layer set in accordance with the present invention.

Symbolic description in the drawings:

1, strengthening a disc-type pen point; 2, reinforcing rings; 21 a ring body; 22 an upper rim; 23 lower rim; 24 inner edges; 25 supporting the inner flange; 26 supporting the outer flange; 3a disk-shaped flat plate; 31 an upper flat disc surface; 32 lower flat disc surface; 321 a central circular hole; 33 a conical receiving portion; 331 receiving channels; 332 upper cavity edge; 333 lower cavity edge; 334 ring groove; 4, a ball column; 41 a spherical head; 42 a cylindrical portion; 421 a neck part; 422 a conical section; 423 cylinder; 424 rod ends; 5, touching the layer group; 51 compressing the conductive sheet; 52 supporting the conductive sheet; 521 an annular bottom block; 53 an adhesive layer; 531 central hole; 54 a conductive proximal layer; an included angle theta; 7 a touch pen; 71 a pen point; 72 a pen shell; 73 processing system circuitry; 74 a power source; theta' is rotated by the moving angle.

Detailed Description

The following detailed description and technical contents of the present invention are described with reference to the drawings, which are provided for reference and illustration purposes only and are not intended to limit the present invention.

As shown in fig. 1, the present invention provides a reinforced disc-type pen point 1, which is used in cooperation with a touch pen 7 for operating a capacitive touch sensing device (not shown). A capacitive touch sensing device, as referred to herein, is a tablet computer, a mobile device, a tablet, or other suitable touch device. In the embodiment shown in fig. 1, the stylus 7 includes a pen tip 71 and a pen housing 72 connected to the pen tip 71. The pen tip 71 can be composed of a reinforced disc-shaped pen tip 1 touching a touch surface of the capacitive touch sensor device. The reinforced disc-type pen point 1 of the embodiment can be concentric with the cross section of the pen shell 72; however, in other embodiments, the reinforced saucer-type pen head 1 may not be concentric with the cross section of the pen casing 72, and may be changed according to the requirement, and is not limited thereto. The pen housing 72 can house touch circuitry such as sensing components, signal processing components, and other suitable components (e.g., processing system circuitry 73 and power supply 74 shown in fig. 1), as may be required by the stylus 7.

In addition, the size of the reinforced disc-type pen tip 1 in this embodiment is preferably smaller than the size of the pen shell 72. However, in other embodiments, the size of the reinforced saucer-type pen head 1 may be the same as or larger than the pen shell 72, and is not limited thereto. The reinforced disc pen tip 1 can be made of any suitable conductive or non-conductive material so that the electrical connection can be made from the entire reinforced disc pen tip 1 up to the nib 71 and pen housing 72 of the stylus 7. In the present embodiment, the reinforced disc-type pen tip 1 is replaceably assembled on the pen shell 72, and the pen shell 72 can be made of a suitable conductive material or any suitable non-conductive material, which varies according to the requirement of the touch pen 7.

As shown in FIG. 2, the reinforced disc-type pen tip 1 includes a reinforcing ring 2, a disc-shaped plate 3, a ball stud 4 and a touch layer set 5. Because the disk-shaped plate 3 is used for a long time and/or the axial/radial force acting on the reinforced disk-shaped pen point 1 is increased, the pull-out force between the ball column 4 and the disk-shaped plate 3 is increased, and the design and the structure of the reinforced ring 2 and the disk-shaped plate 3 can avoid the accidental loosening of the ball column 4.

Referring to fig. 3A, 3B and 5A, the stiffener ring 2 has a ring body 21, an upper rim 22 connecting the ring body 21, a lower rim 23 corresponding to the upper rim 22, an inner rim 24 extending inwardly from the upper rim 22, an inner support rim 25 extending inwardly from the lower rim 23, and an outer support rim 26 extending outwardly from the lower rim 23. In the embodiment shown in fig. 3A and 3B, the reinforcing ring 2 has two annular supporting flanges (supporting inner flange 25, supporting outer flange 26), and the two annular supporting flanges (supporting inner flange 25, supporting outer flange 26) are disposed corresponding to the inner edge 24. The two annular supporting flanges (supporting inner flange 25, supporting outer flange 26) have shapes including, but not limited to, annular, wavy, zigzag, or other suitable shapes, and are respectively disposed on two sides of the lower rim 23 of the ring body 21. However, in other different embodiments, the inner supporting flange 25 and the outer supporting flange 26 can also be disposed between the upper rim 22 and the lower rim 23 of the ring body 21, so as to have a high bonding strength, a clear end-point visibility and a reinforcement capability between the reinforcement ring 2 and the annular groove 334 of the disc-shaped flat plate 3.

The reinforcement ring 2 is formed of a solid block, but the present embodiment is not limited thereto. The reinforcement ring 2 can be made of more than one solid block or solid block with holes in order to have a high bonding strength, a clear end visibility and a reinforcement capability exhibition between the reinforcement ring 2 and the annular groove 334 of the disc-shaped flat plate 3. The stiffener ring 2 can be made of any suitable conductive or non-conductive material, preferably stainless steel, so that the bending modulus (flexural modulus) of the suitable conductive or non-conductive material is greater than that of the disk-shaped plate 3. The higher bending modulus of the reinforcement ring 2, in particular the higher bending modulus of the inner edge 24, increases the strength of the bond between the ball stud 4 and the disc-shaped plate 3 to avoid accidental loosening of the ball stud 4.

The disc-shaped plate 3 includes an upper flat disc surface 31, a lower flat disc surface 32 corresponding to the upper flat disc surface 31, and a tapered receiving portion 33 extending upward from the center of the upper flat disc surface 31, wherein the tapered receiving portion 33 includes a receiving passage 331 having a circular cross section. The disc-shaped plate 3 can be made of any suitable non-conductive material, such as transparent Polycarbonate (PC), Polymethylmethacrylate (PMMA) or other plastic material according to the requirements of the present embodiment. In this embodiment, the disc-shaped plate 3 is preferably polycarbonate. The tapered receiving portion 33 further includes an upper cavity edge 332, a lower cavity edge 333, and a ring groove 334 surrounding the receiving channel 331. The stiffener ring 2 is formed integrally with the annular groove 334, and the inner edge 24 of the stiffener ring 2 is exposed and flush with the upper cavity edge 332 of the receiving passage 331 having a circular cross-section. Thus, the shape of the annular groove 334 and its configuration correspond to the shape of the stiffener ring 2 up to the inner edge 24.

In the embodiment shown in fig. 3A, 3B and 5A, the ring body 21 of the stiffener ring 2 is preferably perpendicular to the lower disc surface 32 of the disc-shaped plate 3. However, in the embodiment shown in fig. 4A, 4B and 5B, the ring body 21 of the stiffener ring 2 may form an angle θ with the lower flat disc surface 32 of the disc-shaped flat plate 3. Specifically, the ring body 21 and the rotation center of the ball head 41 of the ball stud 4 have an included angle θ, which is smaller than 90 degrees, so that the size of the lower rim 23 is larger than that of the upper rim 22. In addition, when the disk-shaped flat plate 3 is solidified after injection molding thereof, the supporting inner flange 25 and the supporting outer flange 26 of the reinforcement ring 2 can increase the bonding strength between the reinforcement ring 2 and the ring groove 334.

Referring to fig. 6A and 6B, the ball stud 4 has a spherical head 41 and a cylindrical portion 42 connecting the spherical head 41. The spherical head 41 is rotatably movably inserted in the receiving passage 331 to allow the spherical head 41 to rotatably move therein. The cylindrical portion 42 extends upward through the tapered receiving portion 33 and is electrically coupled to the stylus 7. The ball stud 4 of the present embodiment can be made of any suitable conductive material, such as stainless steel, aluminum, copper or other similar materials, preferably stainless steel.

The cylindrical portion 42 includes a neck 421, a tapered section 422, a cylinder 423 and a rod end 424. The neck 421 has a size smaller than that of the spherical head 41 and the tapered section 422 so that the rotational movement angle θ' of the cylindrical portion 42 with respect to the rotational center of the spherical head 41 is 100 degrees or more, as shown in fig. 7. As shown in fig. 6A and 6B, the neck 421 is integrally formed with the spherical head 41, and the tapered section 422 and the cylindrical body 423 are integrally formed with the rod end 424. In the embodiment shown in FIG. 6A, the shaft end 424 is preferably cylindrical in shape so that the reinforced disc-type pen tip 1 is electrically connected and pressed against the stylus 7. However, in the embodiment shown in fig. 6B, the rod end 424 is preferably a threaded portion (not labeled) so that the reinforced disc-type pen tip 1 is electrically connected and screwed to the stylus 7. Therefore, the reinforced disc-type pen point 1 of the present embodiment can be replaceably assembled on the touch pen 7.

Referring to fig. 8 and 9, the touch layer set 5 is mounted on the lower flat plate surface 32, and the touch layer set 5 is electrically coupled to the ball head 41 of the ball stud 4. During the rotational movement of the spherical head 41, the touching layer group 5, the conical receptacle 33 and the inner edge 24 of the stiffening ring 2 hold the spherical head 41 in the receptacle channel 331. In the embodiment shown in fig. 9, the touch layer set 5 includes a compressive conductive sheet 51, a supporting conductive sheet 52, an adhesive layer 53 having a central hole 531, and a conductive proximal layer 54. The adhesive layer 53 adheres the conductive proximal layer 54 to the lower disc surface 32 and to the supporting conductive pad 52. The thickness of the adhesive layer 53 and the size of the central hole 531 are designed such that the compressive conductive sheet 51, the supporting conductive sheet 52, the adhesive layer 53 and the conductive proximal layer 54 are electrically coupled to the ball stud 4.

In addition, the lower flat disc surface 32 has a central circular hole 321, and the supporting conductive sheet 52 is installed and received in the central circular hole 321. The supporting conductive sheet 52 has a ring-shaped bottom block 521, and the ring-shaped bottom block 521 contacts the exposed surface of the adhesive layer 53. The compressed conductive sheet 51 is preferably made of a compressed conductive material such as copper, silver or other suitable material as desired according to the present embodiment. As the spherical head 41 is rotationally moved within the receiving channel 331, contact is maintained between the compression conductive pads 51 and a contact surface area (not labeled) of the spherical head 41. Specifically, the compressibility of the compressed conductive sheet 51 allows not only a continuous contact between the ball head 41 and the compressed conductive sheet 51 during use, but the compressed conductive sheet 51 also allows a maximum possible contact area between the ball head 41 and the compressed conductive sheet 51 during indentation caused by the rotational movement of the ball stud 4.

The hard conductive material is used to support the conductive plate 52 relative to the compressed conductive plate 51, so that the supporting conductive plate 52 resists the force applied to the enhanced disc-type pen tip 1. The conductive proximal layer 54 can be made of any suitable conductive material, such as an Indium Tin Oxide (ITO) transparent conductive film, an aluminum-doped zinc oxide (Al-doped ZnO; AZO) transparent conductive film, or other suitable material, and the conductive proximal layer 54 of this embodiment is preferably ITO. While the ball stud 4 is rotatably held in the tapered receiving portion 33 of the disc-shaped plate 3, the annular bottom block 521 for supporting the conductive sheet 52 increases the adhesion area of the adhesive layer 53 and stably adheres and supports the conductive sheet 52, so that the strength and stability are increased.

During the rotational movement of the spherical head 41, the contact layer group 5, the conical receptacle 33 of the disc plate 3 and the inner edge 24 of the stiffening ring 2 hold the spherical head 41 of the ball stud 4 in the receiving channel 331 with a circular cross-section, avoiding an accidental release of the ball stud 4 from the disc plate 3.

In summary, the embodiments disclosed herein should be considered illustrative, rather than limiting, of the present invention. The scope of the invention should be determined by the appended claims, and their legal equivalents are covered thereby, and are not limited to the foregoing description.

Claims

1. The utility model provides a strengthen dish type nib, uses with a touch-control pen cooperation, its characterized in that, strengthen dish type nib and include:

a stiffener ring having a ring body, an upper rim connected to the ring body, a lower rim corresponding to the upper rim, and an inner edge extending inwardly from the upper rim;

the disc-shaped flat plate comprises an upper flat plate surface, a lower flat plate surface corresponding to the upper flat plate surface and a conical accommodating part extending upwards from the center of the upper flat plate surface, wherein the conical accommodating part comprises an accommodating channel with a circular cross section, and the accommodating channel comprises an upper cavity edge, a lower cavity edge and a ring groove annularly arranged in the accommodating channel;

the ball column is provided with a spherical head and a column body part connected with the spherical head, the spherical head is rotatably and movably inserted into the accommodating channel, and the column body part extends upwards through the conical accommodating part and is electrically coupled with the touch pen; and

a touch layer set mounted on the lower flat plate surface, the touch layer set being electrically coupled to the ball head, wherein the touch layer set, the tapered receiving portion and the inner rim keep the ball head in the receiving channel during the rotational movement of the ball head, the touch layer set comprising a compression conductive sheet;

wherein the disc-shaped flat plate is made of polycarbonate or polymethyl methacrylate, the disc-shaped flat plate is coated on the inner part and the outer part of the strengthening ring, the strengthening ring is arranged in the ring groove, the conical accommodating part is coated on the inner part, the outer part and the surface of the inner edge of the ring body, and the inner edge of the strengthening ring is exposed and flush with the edge of the upper cavity of the accommodating channel, when the spherical head rotates and moves in the accommodating channel, such that a contact surface area between the compressive conductive tab and the spherical head remains in contact, the compressibility of the compressive conductive tab, not only does continuous contact between the spherical head and the compressive conductive pads be allowed during use, the compressive conductive pads also allow for maximum area contact between the ball head and the compressive conductive pads during indentation by rotational movement of the ball stud.

2. The reinforced disc-type nib of claim 1, wherein the reinforcing ring is integrally formed with the annular groove.

3. The reinforced disc-type nib of claim 1, wherein the touch layer set comprises a supporting conductive pad, an adhesive layer having a central aperture, and a conductive proximal layer, the adhesive layer adhering the conductive proximal layer to the lower plate surface and the supporting conductive pad.

4. The enhanced saucer type pen head as claimed in claim 3, wherein said lower plate surface has a central circular hole, said supporting conductive plate being mounted in said central circular hole, wherein said supporting conductive plate has an annular bottom block, said annular bottom block contacting an exposed surface of said adhesive layer.

5. The reinforced disc nib of claim 3, wherein the compressed conductive pad is made of a compressed conductive material, the conductive material being copper or silver.

6. The enhanced disk pen tip according to claim 3, wherein the conductive proximal layer is made of a transparent conductive material, and the transparent conductive material is indium tin oxide.

7. The enhanced disk nib of claim 1, wherein said ring body is perpendicular to said lower disk surface of said disk plate or has an angle with the center of rotation of said ball-shaped head, said angle being less than 90 degrees such that the size of said lower rim is greater than the size of said upper rim.

8. The reinforced disc-type pen tip according to claim 1, wherein the barrel portion comprises a neck portion, a tapered section, a cylinder, and a rod end, the neck portion having a size smaller than the size of the ball-shaped head and the tapered section such that the rotational movement angle of the barrel portion with respect to the rotational center of the ball-shaped head is 100 degrees or more, wherein the neck portion is integrally formed with the ball-shaped head, and the tapered section and the cylinder are integrally formed with the rod end.

9. The reinforced disc-type pen tip of claim 8, wherein the rod end is shaped as a cylinder to allow the reinforced disc-type pen tip to be electrically connected and press-fitted to the stylus, and wherein the rod end is a threaded portion to allow the reinforced disc-type pen tip to be electrically connected and screw-fitted to the stylus.

10. The reinforced saucer-type pen head as claimed in claim 1, wherein said reinforcing ring further has an inner supporting flange extending inwardly from said lower rim and an outer supporting flange extending outwardly from said lower rim.