TWI639933B - Reinforced stylus disc tip - Google Patents

Abstract

A reinforced disc type pen head comprising a reinforcing ring, a disc plate, a ball column and a touch layer group. The reinforcing ring has a ring body, an upper ring edge, a lower ring edge corresponding to the upper ring edge, and an inner edge extending inwardly from the upper ring edge. The disc-shaped plate comprises an upper flat disc surface, a lower flat disc surface and a tapered receiving portion extending upward from the center of the upper flat disc surface. The tapered receiving portion includes a receiving passage. The ball column has a spherical head and a cylindrical body portion, and the spherical head is rotatably movable. The cylindrical portion is electrically coupled to the stylus via the tapered receiving portion. The touch layer group is mounted on the lower flat surface, and the touch layer group is electrically coupled to the spherical head. During the movement of the spherical head rotation, the touch layer set, the tapered receiving portion and the inner edge maintain the spherical head within the receiving channel.

Description

Enhanced disc type pen

The invention relates to a disc type pen tip, in particular to a reinforced disc type pen tip which can control a stylus pen and a capacitive touch sensing device.

The existing stylus is generally used as an input device to perform various functions of input devices by contacting or approaching a touch sensing device such as a tablet computer, a mobile device, a tablet, and other touch screen surfaces suitable for the device. When an object touches or approaches the touch sensing device, especially the surface of the capacitive touch sensing device, a capacitance change occurs in the touch screen where capacitive coupling occurs after touch or proximity. A touch sensing controller can then process the change in capacitance to determine the coordinates of the object on the touch screen and calculate the orientation (eg, azimuth and tilt angle) to perform, for example, writing, painting, painting, or touching on the screen. The pen is tapped for the selected operation.

Several stylus technologies with decision coordinates to calculate orientation have been developed. Some techniques may detect capacitance by one or more positions of the stylus relative to a surface of the touch sensing device, then use the capacitance to determine its coordinates, and calculate the orientation relative to the stylus on the surface. Other techniques can attach a conductive pad to a tip of the stylus to ensure capacitive coupling between the stylus and the touch screen surface of the touch sensing device.

In the case of a stylus having a conductive pad, in some techniques, a pivotally connected connector, such as a ball, is used to assemble the stylus to the conductive pad. Therefore, when the user uses the stylus, the conductive disk and the touch screen surface of the touch sensing device can be kept flush.

However, when using this stylus, the conductive disk is often accidentally released from the ball, such as when the ball is rotated to its maximum angle. In this case, the pull-out force of the ball column is reduced, and the pull-out force here refers to the force that the ball column is subjected to in the axial/radial direction to separate it from the conductive disk. Therefore, accidental loosening will occur more and more frequently. In addition, since the size of the conductive disk is small, and also because of some techniques for facilitating the visibility of the end of the conductive disk used by the user, the conductive disk may not be visible when it is accidentally released. Therefore, it is necessary to replace the conductive disk to increase the cost of the user.

In view of this, there is a need for a powerful disc type pen to solve the above problems.

One of the objects of the present invention is to provide a reinforced disc type pen tip suitable for controlling various stylus pens and various capacitive touch sensing devices.

To achieve the above object, the present invention provides a reinforced disc type pen tip for use with a stylus pen, the reinforced disc type pen tip comprising a reinforcing ring, a disk-shaped plate, a ball column and a touch layer group. The reinforcing ring has a ring body, an upper ring edge of the connecting ring body, a lower ring edge corresponding to the upper ring edge, and an inner edge extending inwardly from the upper ring edge. The disc-shaped flat plate comprises an upper flat disc surface, a lower flat disc surface corresponding to the upper flat disc surface, and a tapered receiving portion extending upward from the center of the upper flat disc surface, wherein the tapered receiving portion comprises a circular cross section receiving passage . The ball column has a spherical head and a cylindrical portion connected to the spherical head, and the spherical head is rotatably movable to receive the passage. The cylindrical portion extends upward through the tapered receiving portion and the stylus is electrically Coupling. The touch layer group is mounted on the lower flat surface, and the touch layer group is electrically coupled to the spherical head. During the movement of the spherical head rotation, the touch layer set, the tapered receiving portion and the inner edge maintain the spherical head within the receiving channel.

The present invention also has the effect that the reinforcing ring can prevent accidental loosening of the disc-shaped plate during use of the ball. Further, when the disk-shaped flat plate is injection-molded, the reinforcing ring has a support inner flange having a high bonding strength and a support outer flange and a ring groove integrally formed with the disk-shaped flat plate. Therefore, the pull-out force of the ball column is increased, that is, the pull-out force refers to the force that the ball column receives in the axial/radial direction before separating the spherical head from the disk-shaped flat plate.

When the stylus touches and moves along the touch screen surface of the touch sensing device, through the clear visibility of the endpoint and the precise coordinate determination, the disc plate can provide the user with more natural and lifting sensitivity for drawing thin lines. Effortless experience (such as clear field of view (no shadow point), sharp endpoint recognition, no delay, no wavy lines, etc.), thus increasing the experience of the stylus. The enhanced disc type pen tip of the embodiment is suitable for increasing the sensitivity of the stylus when drawing a thin line, and can also extend the service life through the reinforcing ring, thereby avoiding the gradual increase of the pull-out between the ball column and the disc-shaped plate. Separated by force, the pull-out force referred to herein refers to the axial/radial force acting on the disc plate for a long time and/or on the disc. In addition, the cost of replacement is reduced, the use of the largest angle of rotation is convincing and loose is avoidable, and the endpoint's clear visibility and accurate coordinate determination are still achieved.

1‧‧‧Strengthened disc type pen

2‧‧‧Strengthened ring

21‧‧‧ Ring Ontology

22‧‧‧Upper ring

23‧‧‧ lower ring

24‧‧‧ inner edge

25‧‧‧Support inner flange

26‧‧‧Support outer flange

3‧‧‧ disk plate

31‧‧‧Upper flat surface

32‧‧‧ Lower flat surface

321‧‧‧ center hole

33‧‧‧Cone-shaped housing

331‧‧‧Accommodation channel

332‧‧‧ upper edge of the cavity

333‧‧‧ lower cavity edge

334‧‧‧ Ring groove

4‧‧‧Ball

41‧‧‧ spherical head

42‧‧‧Cylinder Department

421‧‧‧ neck

422‧‧‧Cone section

423‧‧‧Cylinder

424‧‧‧ rod end

5‧‧‧Touch layer group

51‧‧‧Compressed conductive sheet

52‧‧‧Support conductive sheet

521‧‧‧ ring bottom block

53‧‧‧Adhesive layer

531‧‧‧ center hole

54‧‧‧conductive proximal layer

Θ‧‧‧ angle

7‧‧‧ stylus

71‧‧‧ nib

72‧‧‧ pen case

73‧‧‧Processing system circuit

74‧‧‧Power supply

FIG. 1 is a schematic view showing a preferred embodiment of the present invention in combination with a stylus.

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

3A is a perspective view of a reinforcing ring in accordance with a preferred embodiment of the present invention.

3B is an exploded view of a stiffening ring in accordance with a preferred embodiment of the present invention.

4A is another perspective view of a reinforcing ring in accordance with a preferred embodiment of the present invention.

4B is another exploded view of the reinforcing ring of the preferred embodiment of the present invention.

Figure 5A is a cross-sectional view showing a disk-shaped flat plate in accordance with a preferred embodiment of the present invention.

Figure 5B is another cross-sectional view showing a disk-shaped flat plate in accordance with a preferred embodiment of the present invention.

Figure 6A is a perspective view of a ball column in accordance with a preferred embodiment of the present invention.

6B is another perspective view of a ball post in accordance with a preferred embodiment of the present invention.

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

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

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

The detailed description and technical content of the present invention are set forth in the accompanying drawings.

As shown in FIG. 1 , the present invention provides a reinforced disc type pen tip 1 for use with a stylus pen 7 for controlling 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 pen 7 includes a tip 71 and a penetrating shell 72 that connects the nibs 71. The nib 71 can be composed of a reinforced disc type tip 1 that touches a touch surface of the capacitive touch sensing device. The reinforced disc type pen tip 1 of the present embodiment can be concentric with the shape of the pen case 72; however, in other different embodiments, the reinforced disc type pen tip 1 may not be concentric with the pen case 72, and may be changed as needed. limited. The pen case 72 can be mounted with touch circuitry, such as inductive components, signal processing components, and other suitable components (such as the processing system circuitry 73 and power supply 74 shown in FIG. 1), depending on the needs of the stylus 7.

Further, the size of the reinforced disc type pen tip 1 of the present embodiment is preferably smaller than the size of the pen case 72. However, in other different embodiments, the size of the reinforced disc type pen 1 may be the same or larger than the size of the pen case 72, and is not limited. The reinforced disc type pen tip 1 can be made of any suitable electrically conductive material or non-conductive material to enable electrical connection from the entire reinforced disc type pen tip 1 to the pen tip 71 and the pen case 72 of the stylus pen 7. In the present embodiment, the reinforced disc type pen tip 1 is replaceably assembled to the pen case 72, and the pen case 72 can be a suitable conductive material or any suitable non-conductive material, depending on the needs of the stylus pen 7.

As shown in FIG. 2, the reinforced disc type pen tip 1 includes a reinforced ring 2, a disk-shaped plate 3, a ball column 4, and a touch layer group 5. Due to the long-term use of the disc-shaped flat plate 3 and/or the axial/radial force acting on the reinforcing disc-type pen tip 1, the pull-out force between the ball stud 4 and the disc-shaped flat plate 3 is increased, and the reinforcing ring 2 and the disc-shaped flat plate are increased. The design and construction of 3 can avoid accidental loosening of the ball post 4.

Referring to FIG. 3A, FIG. 3B and FIG. 5A together, the reinforcing ring 2 has a ring body 21, an upper ring edge 22 of the connecting ring body 21, a lower ring edge 23 corresponding to the upper ring edge 22, and an inward extending from the upper ring edge 22. An inner edge 24, a support inner flange 25 extending inwardly from the lower collar edge 23, and a support outer flange 26 extending outwardly from the lower collar edge 23. In the embodiment shown in Figures 3A and 3B, the stiffening ring 2 has two annular support flanges 25, 26 and the two annular support flanges 25, 26 are disposed corresponding to the inner edge 24. The shape of the two annular support flanges 25, 26 includes, but is not limited to, an annular shape, a wave shape, a zigzag shape, or other suitable shape, and is disposed on both sides of the lower ring edge 23 of the ring body 21, respectively. However, in other various embodiments, the support inner flange 25 and the support outer flange 26 can also be disposed between the upper and lower rims 21, 23 of the ring body 21 for reinforcement of the ring 2 and the disk plate 3. The ring grooves 334 have a high bond strength, clear endpoint visibility, and enhanced performance.

The reinforcing ring 2 is composed of a solid block, but the embodiment is not limited thereto. The reinforcing ring 2 can be composed of more than one solid block or a solid block having pores so as to be in the ring of the reinforcing ring 2 and the disc-shaped plate 3 The grooves 334 have a high bond strength, clear endpoint visibility, and enhanced performance. The reinforcing ring 2 can be constructed of any suitable electrically conductive or non-conductive material, preferably stainless steel, such that the flexural modulus of a suitable electrically conductive or non-conductive material is greater than the bending modulus of the disc-shaped flat plate 3. The higher bending coefficient of the reinforcing ring 2, in particular, the higher bending coefficient of the inner edge 24 can increase the bonding strength between the ball post 4 and the disc-shaped flat plate 3 to avoid accidental loosening of the ball stud 4.

The disc-shaped flat plate 3 comprises 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 comprises a A circular section of the receiving passage 331. The disc-shaped plate 3 can be constructed of any suitable non-conductive material, such as transparent polycarbonate (PC), polymethyl methacrylate (PMMA) or other plastic materials as required by this embodiment. In the present embodiment, the disk-shaped flat 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 annularly disposed in the receiving passage 331. The reinforcing ring 2 is integrally formed with the ring groove 334, and the inner edge 24 of the reinforcing ring 2 is exposed and flush with the upper cavity edge 332 of the circular passage receiving passage 331. Thus, the shape of the annular groove 334 and its configuration are corresponding to the shape of the reinforcing ring 2 up to the inner edge 24.

In the embodiment shown in Figures 3A, 3B and 5A, the ring body 21 of the reinforcing ring 2 is preferably perpendicular to the lower flat surface 32 of the disc-shaped plate 3. However, in the embodiment shown in FIGS. 4A, 4B and 5B, the ring body 21 of the reinforcing ring 2 may also form an angle θ with the lower flat disk surface 32 of the disk-shaped flat plate 3. Specifically, the ring body 21 has an angle θ with the center of rotation of the spherical head 41 of the ball post 4, and the angle θ is less than 90 degrees so that the size of the lower ring edge 23 is larger than the size of the upper ring edge 22. Further, when the disk-shaped flat plate 3 is solidified by its injection molding, the support inner flange 25 and the support outer flange 26 of the reinforcing ring 2 can increase the bonding strength between the reinforcing ring 2 and the ring groove 334.

Referring to FIG. 6A and FIG. 6B together, the ball post 4 has a spherical head 41 and a cylindrical portion 42 connecting the spherical head 41. The spherical head 41 is rotatably movable to accommodate the passage 331 to allow the spherical head 41 to rotationally move therein. The cylindrical portion 42 is electrically coupled to the stylus pen 7 and extends upward through the tapered receiving portion 33 . The ball stud 4 of the present embodiment can be constructed of any suitable electrically conductive material, such as stainless steel, aluminum, copper or the like, which is preferably stainless steel.

The cylindrical portion 42 includes a neck portion 421, a tapered portion 422, a cylindrical body 423, and a rod end 424. The size of the neck portion 421 is smaller than the size of the spherical head 41 and the tapered portion 422 such that the rotational movement angle θ of the cylindrical portion 42 with respect to the center of rotation of the spherical head 41 is at least 100 degrees or more, as shown in FIG. As shown in FIGS. 6A and 6B, the neck portion 421 is integrally formed with the spherical head 41, and the tapered portion 422 and the cylindrical body 423 are integrally formed with the tapered portion 422 and the rod end 424. In the embodiment shown in FIG. 6A, the rod end 424 is preferably cylindrical in shape so that the reinforcing disc type tip 1 is electrically connected and crimped to the stylus 7. However, in the embodiment shown in FIG. 6B, the rod end 424 is preferably a threaded portion (not shown) to electrically connect and secure the reinforced disc tip 1 to the stylus 7. Therefore, the reinforced disc type pen 1 of the present embodiment can be assembled to the stylus pen 7 instead.

Referring to FIG. 8 and FIG. 9 together, the touch layer group 5 is mounted on the lower flat surface 32, and the touch layer group 5 is electrically coupled to the spherical head 41 of the ball column 4. During the movement of the spherical head 41, the inner layer 24 of the touch layer group 5, the tapered accommodation portion 33 and the reinforcing ring 2 maintains the spherical head 41 within the accommodation passage 331. In the embodiment shown in FIG. 9, the touch layer group 5 includes a compressed 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 bonds the conductive proximal layer 54 to the lower flat surface 32 and the supporting conductive sheet. The thickness of the adhesive layer 53 and the size of the central hole 531 can be designed such that the compressed conductive sheet 51, the supporting conductive sheet 52, the adhesive layer 53, and the conductive proximal layer 54 are electrically coupled to the ball post 4.

Further, the lower flat disk surface 32 has a central circular hole 321 through which the support conductive sheet 52 is mounted and accommodated. The support conductive sheet 52 has an annular bottom block 521 which contacts the exposed surface of the adhesive layer 53. The compressed conductive layer 51 is preferably made of a compressed electrically conductive material such as copper, silver or other suitable material as required in accordance with this embodiment. When the spherical head 41 is rotationally moved within the accommodating passage 331, the contact surface area (not shown) between the compressed conductive layer 51 and the spherical head 41 is kept in contact. Specifically, the compressibility of the compressed conductive sheet 51 not only allows continuous contact between the spherical head 41 and the compressed conductive sheet 51 during use, but also allows the compressed conductive sheet 51 to be allowed during the rotational movement of the ball post 4 to cause an indentation. The spherical head 41 and the compressed conductive sheet 51 serve as the largest possible contact area.

With respect to the compressed conductive sheet 51, a hard conductive material is used to support the conductive sheet 52 so that the supporting conductive sheet 52 resists the force acting on the reinforcing disc type tip 1. The conductive proximal layer 54 can be composed of any suitable conductive material, such as an indium tin oxide (ITO) transparent conductive film, an Al-doped ZnO (AZO) transparent conductive film or other suitable material, which is electrically conductive in this embodiment. The proximal layer 54 is preferably ITO. While the ball post 4 is maintained in the rotational movement in the tapered receiving portion 33 of the disc-shaped flat plate 3, the annular bottom block 521 supporting the conductive sheet 52 increases the adhesive area of the adhesive layer 53 and stably adheres the conductive sheet 52 so that Increased strength and stability.

During the rotational movement of the spherical head 41, the contact layer group 5, the tapered accommodating portion 33 of the disk-shaped flat plate 3, and the inner edge 24 of the reinforcing ring 2 hold the spherical head 41 of the ball stud 4 in the circular passage receiving passage 331 Inside, the ball stud 4 is prevented from being accidentally released from the disc-shaped flat plate 3.

In the above, the embodiments disclosed herein are to be considered as illustrative of the invention and not to limit the invention. The scope of the present invention is defined by the scope of the appended claims, and the legal equivalents thereof are not limited to the foregoing description.

Claims (10)

An enhanced disc type pen tip for use with a stylus pen, the reinforced disc type pen tip comprising: a reinforcing ring having a ring body, an upper ring edge connecting the ring body, a lower ring edge corresponding to the upper ring edge, and the upper ring edge corresponding to the upper ring edge An inner edge extending inwardly; a disc-shaped plate comprising an upper flat disc surface, a lower flat disc surface corresponding to the upper flat disc surface, and a tapered receiving portion extending upward from a center of the upper flat disc surface, wherein The accommodating passage includes a receiving passage having a circular cross section, and the accommodating passage further includes an upper chamber edge, a lower chamber edge and a ring groove disposed on the receiving passage, the reinforcing ring being integrated with the ring groove Forming a ball column, one end of which is inserted into the receiving passage of the disc-shaped plate, the ball column has a spherical head and a cylindrical portion connecting the spherical head, and the spherical head is rotatably inserted into the receiving passage The shank portion is electrically coupled to the stylus via the tapered accommodating portion; and a touch layer is mounted on the lower slab surface, the touch layer group is electrically coupled to the spheroid Head, wherein when the spherical head rotates During the touch layer group, the tapered receiving portion, and the inner edge of the spherical head remains in the receiving channel. The reinforced disc type tip of claim 1, wherein the inner edge of the reinforcing ring is exposed and flush with an edge of the upper cavity of the receiving passage. The reinforced disc type pen according to claim 1, wherein the touch layer group comprises a compressed conductive sheet, a supporting conductive sheet, an adhesive layer having a central hole, and a conductive proximal layer, wherein the adhesive layer is bonded to the adhesive layer Conducting the proximal layer to the lower flat surface and the supporting conductive sheet. The reinforced disc type pen tip according to claim 3, wherein the lower flat disk surface has a central circular hole, and the supporting conductive piece is mounted on the central circular hole, wherein the supporting conductive piece has an annular bottom block, and the annular bottom block Contact the exposed surface of the adhesive layer. The reinforced disc type pen tip according to claim 3, wherein the compressed conductive layer is made of a compressed conductive material, such as copper or silver, and the spherical head is rotated in the accommodating passage to enable A contact surface area between the compressed conductive layer and the spherical head is maintained in contact. The reinforced disc type tip according to claim 3, wherein the conductive proximal layer is made of a transparent conductive material such as indium tin oxide. The reinforced disc type pen tip according to claim 1, wherein the ring body is perpendicular to a surface of the lower plate of the disk plate or has an angle with a center of rotation of the ball head, the angle being less than 90 degrees such that the size of the lower ring edge Greater than the size of the upper ring edge. The reinforced disc type pen tip according to claim 1, wherein the column portion comprises a neck portion, a tapered portion, a cylinder body and a rod end, the neck portion having a size smaller than the spherical head portion and the tapered portion Dimensions such that the rotational movement angle of the cylindrical portion relative to the center of rotation of the spherical head is at least 100 degrees or more, wherein the neck is integrally formed with the spherical head, and the tapered portion and the cylindrical body and the tapered portion Formed integrally with the rod end. The reinforcing disc type pen tip according to claim 8, wherein the rod end has a cylindrical shape so that the reinforcing disc type pen tip is electrically connected and crimped to the stylus pen, wherein the rod end is a threaded portion. So that the reinforced disc type pen tip is electrically connected and screwed to the stylus pen. The reinforced disc type tip of claim 1, wherein the reinforcing ring further has a support inner flange extending inwardly from the lower rim and a support outer flange extending outwardly from the lower rim.