JP3215060U - Conductive touch pen tip and touch pen using the same - Google Patents

Abstract

A conductive touch pen tip and a touch pen using the same are provided. In such a conductive touch pen tip and a touch pen using the same, the conductive touch pen tip includes a metal rod and a plastic covering member. The metal rod 2 has a rod head portion 21, a tail portion 23, and a rod body 22, and a connecting core rod 25 is further extended between the rod head portion 21 and the rod body 22. The plastic covering member 3 and the metal rod 2 are integrally injection-molded. The plastic covering member 3 is connected to each other, and the conductive member 31 that covers the rod head 21 and the non-conductive member 32 that covers the rod body 22 respectively. And have. The connecting core rod 25 is covered with the conductive member 31 and the nonconductive member 32, and the tail portion 23 protrudes to the outside of the nonconductive member 32. Thereby, the signal strength can be effectively increased to improve the touch accuracy. [Selection] Figure 5

Description

  The present invention relates to a touch pen tip, and more particularly, to a conductive touch pen tip that improves touch accuracy and can be replaced, and a touch pen using the same.

  As science and technology develops, 3C products are evolving at an innovative rate. In particular, products with touch operation interfaces such as tablet PCs and smartphones have already become mainstream as the trend of future development. It has become. A product with a touch-type operation interface is realized mainly by combining a touch panel with a graphical operation interface of an operating system. The touch panel is based on its sensing principle, and is based on its sensing principle. It is classified into several types such as a touch panel and an electromagnetic touch panel.

  The various different touch panels are used for detecting the position of the touch pen to generate a corresponding indicator or cursor and interact with a product having a corresponding touch-type operation interface. However, if the touch pen is tilted on the touch panel, an error often occurs between the position of the indicator or cursor displayed on the touch panel and the position where the touch pen is used to control the operation. There is a problem that the user feels inconvenience in operation due to the inaccurate accuracy and the lowered sensitivity. In addition, the pen tip of the touch pen will wear out after a long period of use, so if it becomes unusable due to bending or tearing due to pressure, the entire touch pen must be replaced, reducing the user's expense. It will increase.

  Therefore, it is said that one of the important problems to be solved by the industry is how to overcome the above drawbacks by improving the structural design.

  One of the objects of the present invention is to provide a conductive touch pen tip capable of effectively improving touch accuracy by increasing signal intensity and a touch pen using the same.

  Another object of the present invention is to provide a replaceable conductive touch pen tip and a touch pen using the same.

  In order to achieve the above object, the present invention provides a conductive touch pen tip that is attached to a pen barrel and that operates a capacitive touch sensing device. The conductive touch pen tip includes a metal bar and a plastic covering member. The metal rod has a rod head, a tail, and a rod main body that connects the rod head and the tail, and a connecting core rod is further extended between the rod head and the rod main body. Each of the plastic covering members includes a conductive member that covers the rod head and a non-conductive member that covers the rod body, which are connected to each other. The connecting core rod is covered between the conductive member and the nonconductive member, and the tail portion protrudes to the outside of the nonconductive member.

  In order to achieve the above object, the present invention further provides a touch pen including a pen barrel and the conductive touch pen tip. The conductive touch nib can change components as needed for the touch pen, may be interchangeably mounted on the pen barrel, and the pen barrel may be a suitable conductive member or any suitable You may consist of a nonelectroconductive member.

  The present invention further has the following effects. In a specific embodiment, the plastic covering member and the metal rod are integrally injection-molded, that is, the conductive member, the non-conductive member, and the metal rod are integrally injection-molded from different materials. The positioning effect by two different materials can be increased through the positioning recesses of the metal bar. A connecting core rod for connecting the rod head and the rod body is further provided, and a positioning groove is formed on the connecting core rod. In other words, it is possible to create a positioning groove on the connecting core bar in the rod body by, for example, turning the connecting core bar in a radial direction using a lathe machining method, The positioning effect with the covering member can be increased.

  By reducing the cross-sectional area of the connecting core rod to half or less than the cross-sectional area of the rod head, it becomes difficult for the connecting core rod to generate a capacitance sensing signal on the touch panel. In other words, since the distance between the connecting core and the touch panel is increased and the distance between the bar head and the touch panel is shortened, the system actually determines when the conductive touch pen tip contacts the touch point of the touch panel. Since the difference / error from the touched position can be reduced, the accuracy and sensitivity of the touch between the conductive touch pen tip and the touch panel can be effectively improved.

  The present invention is a conductive touch pen that is easily and easily worn through a screw structure even when the conductive member of the conductive touch pen tip wears or wears down after a long period of use, leading to unexpected tearing or bending. The tip can be removed by turning from the insertion hole of the pen barrel, and the new conductive touch pen tip provided with the male screw portion is tightened by being screwed to the female screw portion of the insertion hole. In other embodiments, for example, a system such as an interference fit or a snap fit may be used. Therefore, the conductive touch pen tip of the present embodiment is easy to replace and excellent in reliability, and it is not necessary to purchase a new touch pen as a whole, and the purchase cost can be greatly reduced.

It is a schematic diagram which shows the touch pen of this invention, and is a schematic diagram of the electroconductive touch pen tip of the state with which the pen axial cylinder was mounted | worn. It is a perspective view which shows the metal stick of the electroconductive touch pen point of this invention. It is sectional drawing which shows the metal stick of the electroconductive touch pen point of this invention. It is sectional drawing which shows the metal rod and conductive member which were integrally injection-molded based on this invention. It is sectional drawing which shows the metal stick by which this invention was integrally molded, and a nonelectroconductive member. It is a perspective view which shows the state by which the plastic coating member of this invention was solidified and joined to the metal bar. It is sectional drawing which shows the state by which the electroconductive touch pen point of this invention was screwed to the pen axis cylinder so that replacement | exchange was possible. It is an experiment figure which shows the state which operated and controlled the electrostatic capacitance type touch sensing apparatus with the conventional touch pen. It is an experiment figure which shows the state which operated and controlled the electrostatic capacitance type touch sensing apparatus with the touch pen of this invention.

  Detailed description and technical contents of the present invention will be described below with reference to the drawings. The accompanying drawings are provided for reference and explanation only and are not used to limit the present invention.

  As shown in FIGS. 1 to 6, the conductive touch pen tip 1 provided by the present invention is attached to a pen barrel 5 and constitutes a touch pen 6. The touch pen 6 of the present embodiment can actively transmit or receive signals. For example, a touch panel such as a tablet personal computer, a mobile device, a graphic tablet, or other appropriate touch sensing device. Since an active capacitive touch pen 6 can be configured by touching a capacitive touch sensing device (not shown) having a touch pen tip 1, a pen barrel 5 having a power source or a capacitive circuit is provided. Easy to install inside. However, in other different embodiments, the touch pen 6 can be changed to a passive touch pen or other suitable touch pen as required.

  In the embodiment shown in FIGS. 1 and 7, a circuit unit 52 and a circuit unit 52 including electronic components such as an insertion hole 51 and a capacitor in the pen barrel 5 of the active capacitive touch pen 6. A power feeding unit 53 that is electrically connected to may be installed. The power supply unit 53 may be, for example, a dry battery, a storage battery, a lithium battery, or the like, and provides necessary power to the touch pen 6. The contact position is determined based on the amount of change in the capacitance value between the conductive touch nib 1 and the capacitive touch sensing device, and the coordinates correspond to the induced current generated by the touch position. Detected. The conductive touch pen tip 1 can change the constituent members according to the needs of the touch pen 6 and may be mounted on the pen barrel 5 in an exchangeable manner. It may consist of any suitable non-conductive member. Specifically, the conductive touch pen tip 1 is detachably attached to the insertion hole 51 of the pen barrel 5, and the attachment method will be described later.

  As shown in FIGS. 2 to 6, the conductive touch pen tip 1 includes a metal bar 2 and a plastic covering member 3. The metal rod 2 has a rod head 21, a tail portion 23, and a rod body 22, of which a connecting core rod 25 is further extended between the rod head 21 and one end of the rod body 22. The other end of 22 is connected to the tail 23. The metal bar 2 of the present embodiment preferably has an upright bar shape, and the material thereof includes a material having excellent conductivity such as iron, steel, copper, or an alloy thereof, but is not limited thereto. One end of the metal bar 2 supports and holds the plastic covering member 3, the other end is electrically connected to the circuit unit 52 of the pen barrel 5, and transmits an input signal generated by a touch panel (not shown). The coordinate position is determined based on the interaction with the system by receiving the input signal through the circuit unit 52 and transmitting the output signal to the touch sensing device (system).

  The plastic covering member 3 is integrally injection-molded on the metal bar 2 and controls the operation of a touch sensing device (not shown) by elasticity and wear resistance. In particular, the plastic covering member 3 includes a conductive member 31 that covers the rod head 21 and a non-conductive member 32 that covers the rod body 22, which are connected to each other. The connecting core rod 25 is covered with a conductive member 31 and a nonconductive member 32, and the tail portion 23 of the metal rod 2 protrudes outside the nonconductive member 32.

  A positioning ditch 24 is formed on the connecting core rod 25, and the positioning ditch 24 is annularly arranged on the surface of the connecting core rod 25. In the present embodiment, it is preferable that the conductive member 31 and the non-conductive member 32 are integrally injection-molded with different materials on the metal rod 2 using an insert molding method. Through the positioning groove 24 of the metal rod 2, the positioning effect by two different materials or the bonding strength thereof can be increased. In the embodiment shown in FIGS. 2 to 6, in the rod body 22, for example, a positioning recess is formed on the coupling core rod 25 by performing a lathe machining in the radial direction on the coupling core rod 25 using a lathe machining method. The groove 24 can be formed, and the positioning effect with the plastic covering member 3 can be increased. Since the diameter of the connecting core rod 25 is smaller than the diameter of the rod head 21 or the rod body 22, the plastic covering member 3 can be more firmly connected to the connecting core rod 25.

  It should be particularly explained here that the shape of the rod head 21 is preferably disk-shaped, the shape of the connecting core rod 25 is cylindrical, and the cross-sectional area of the cross-section of the rod head 21 is the connecting core rod. It is preferably larger than the cross-sectional area of the cross section of 25, and in a preferred embodiment, it is preferably at least twice as large as the cross-sectional area of the cross section of the connecting core rod 25. The conductive member 31 also partially exposes the connecting core rod 25, that is, the non-conductive member 32 partially covers the connecting core rod 25, so that the rod head located on the conductive member 31. 21 and the connecting core rod 25 can both generate an input signal for sensing capacitive coupling with the touch panel. However, the connecting core rod 25 and the rod main body 22 arranged on the non-conductive member 32 are not made of a conductive material, so that a capacitance sensing signal is not generated between the touch panel and the touch panel.

  What should be explained here is that the rod head 21 and the connecting core rod 25 located on the conductive member 31 both generate a capacitance sensing signal between the touch panel and the cross-sectional area of the connecting core rod 25. Since the cross-sectional area of the bar head 21 is smaller than one half, it is difficult for the connecting core bar 25 to generate a capacitance sensing signal on the touch panel. That is, since the distance between the connecting core rod 25 and the touch panel becomes longer and the distance between the rod head 21 and the touch panel becomes shorter, when the conductive touch nib 1 comes into contact with the touch point of the touch panel, depending on the system, Since the difference / error from the actually determined position can be reduced, the accuracy and sensitivity of the touch between the conductive touch pen tip 1 and the touch panel can be effectively improved.

  Hereinafter, the step of integrally injection-molding the plastic covering member 3 and the metal rod 2 will be further described with reference to FIGS. In general, a metal rod 2 produced by lathe processing or other suitable manufacturing method is placed in a mold (not shown). Next, a conductive member 31 in which a plastic material is mixed with a plurality of metal powders is poured into a mold so as to appropriately cover a part of the rod head 21 and the connecting core rod 25. Then, after confirming the solidification after the conductive member 31 is solidified, a step of injecting the non-conductive member 32 is executed. For example, when a non-conductive member 32 such as polyoxymethylene (POM) is injected into the mold, the non-conductive member 32 is connected to the conductive member 31 and inserted from a part of the connecting core rod 25. Since the covering portion 4 is covered, the positioning effect between the non-conductive member 32 and the conductive member 31 or the coupling strength thereof is obtained using the two housing chambers 222 on the positioning groove 24 and the convex ring portion 221. Can be increased.

  Similarly, polyoxymethylene (POM) is used as the plastic material for the conductive member 31, and the conductive member 31 and the non-conductive member 32 after solidification molding are all suitable for surface resistance, strength, elasticity, and resistance to resistance. Abrasion and excellent dimensional stability can be provided. However, in other different embodiments, the conductive member 31 and the non-conductive member 32 may be made of polyurethane (Polyurethane, PU) or other suitable thermoplastic material, of which the conductive member 31 is It can be produced by adding metal powder to the polyurethane.

  The length L ′ of the conductive member 31 in the longitudinal direction of the metal rod 2 is preferably smaller than the length L ″ of the non-conductive member 32 in the longitudinal direction of the metal rod 2, and the conductive touch pen tip 1 is electrostatically charged. When the capacitive touch sensing device is brought into contact with the inclination, the rod head 21 is located in the conductive member 31, and thus the capacitance sensing signal can be generated reliably.

  In the embodiment shown in FIG.5 and FIG.6, the insertion part 4 attached to the pen barrel 5 is further provided. The insertion portion 4 includes a convex ring portion 221 provided around the rod body 22 and a stretched non-conductive member 33 that covers the convex ring portion 221. Two corresponding accommodating chambers 222 are further opened in the convex ring portion 221 in the direction toward the rod head 21, and used to fit the stretched non-conductive member 33 into each accommodating chamber 222 during molding. Thereby, the positioning effect between the extending | stretching nonelectroconductive member 33 and the nonelectroconductive member 32, and the metal rod 3 can be increased. In this embodiment, when the non-conductive member 32 is injection-molded, it is preferable that the stretched non-conductive member 33 injection-molded on the convex ring portion 221 is also integrally injection-molded. Save time and money in the manufacturing process.

  Further, a male screw portion 231 is further provided on the outer surface of the tail portion 23, and is screwed to the pen barrel 5 in a replaceable manner. Referring to FIG. 7, the pen barrel 5 is further provided with an insertion hole 51 corresponding to the insertion part 4, and a female screw part 511 is provided along the inner wall surface of the insertion hole 51. Even when the conductive member 31 of the conductive touch nib 1 wears and wears over a long period of time and leads to unexpected tearing or bending, the conductive touch nib 1 is easily and easily worn through the screw structure. Can be removed by rotating from the insertion hole 51 of the pen barrel 5, and the new conductive touch pen tip 1 provided with the male screw portion 231 is tightened by being screwed into the female screw portion 511 of the insertion hole 51. It becomes a state. In other different embodiments, the touch pen tip 1 and the pen barrel 5 can be replaced with, for example, a snap-fit method such as an interference fit, a flange portion, or a recess portion, but is not limited thereto. Therefore, the conductive touch pen tip 1 of this embodiment is easy to replace and excellent in reliability, and it is not necessary to purchase a new touch pen 6 as a whole, and the purchase cost can be greatly reduced.

  Hereinafter, the conductive touch pen tip 1 of the present invention, the touch pen 6 using the same, and the conventional touch pen are compared in a state in which the capacitive touch sensing device (not shown) is operated and controlled. This will be further described with reference to 8A and 8B. FIG. 8A is an experimental diagram showing a state in which the capacitive touch sensing device is operated and controlled by a conventional touch pen. FIG. 8B is an experimental diagram showing a state in which the capacitive touch sensing device is controlled by the touch pen of the present invention. In a specific embodiment, when the touch pen tip 1 is tilted and brought into contact with a capacitive touch sensing device (not shown), the signal strength in the capacitive touch sensing device generated by the conventional touch pen (not shown). Is 1014 (the upper half shown in FIG. 8A), while the signal strength in the capacitive touch sensing device generated by the touch pen tip 1 of the present invention is significantly higher than the conventional design 1746 (the upper shown in FIG. 8B). Half).

  Furthermore, according to the structural design of the metal rod 2 of the present invention, noise (that is, both sides of the signal strength) can be significantly reduced. The conventional touch pen, the conductive touch pen tip 1 according to the present invention, and the touch pen 6 using the same are not so different in signal strength in the upright state of the touch sensing device, but the noise of the present invention is higher than the conventional technology. Is also shown by the lower half shown in FIGS. 8A and 8B. Accordingly, it has been proved by experiments that the conductive touch pen tip 1 of the present invention and the touch pen 6 using the same have the effect of effectively increasing the signal intensity and improving the touch accuracy.

  It should be noted that the embodiments disclosed herein are illustrative and not limiting. The scope of the present invention should be defined by the appended claims for utility model registration, and their legal equivalents are not limited to the above description.

1: Touch pen tip 2: Metal rod 21: Rod head 22: Rod body 221: Convex ring portion 222: Storage chamber 23: Tail portion 231: Male screw portion 24: Positioning groove 25: Connecting core rod 3: Plastic covering member 31: Conductive member 32: Non-conductive member 33: Stretched non-conductive member 4: Insertion part 5: Pen shaft tube 51: Insertion hole 511: Female thread part 52: Circuit unit 53: Power feeding unit 6: Touch pen L ', L ": Long The

Claims (9)

A conductive touch pen tip attached to a pen barrel and comprising a metal bar and a plastic covering member,
The metal rod has a rod head, a tail, and a rod body, a connecting core rod is further extended between the rod head and one end of the rod body, and the other end of the rod body is Connected to the tail,
The plastic covering member has a conductive member that covers the rod head and a non-conductive member that covers the rod body, the connecting core rod is covered with the conductive member and the non-conductive member, and The conductive touch pen tip, wherein the tail portion protrudes outside the non-conductive member.   The conductive touch pen tip according to claim 1, wherein a positioning concave groove is formed on the connecting core rod.   The diameter of the connecting core rod is smaller than the diameter of the rod head, the shape of the rod head is a disc shape, the shape of the connecting core rod is a column, and the cross-sectional area of the cross section of the rod head The conductive touch pen tip according to claim 1, wherein is larger than a cross-sectional area of a cross-section of the connecting core rod.   2. The conductive touch pen tip according to claim 1, wherein the length of the conductive member in the longitudinal direction of the metal rod is smaller than the length of the non-conductive member in the longitudinal direction of the metal rod.   A touch pen comprising: a pen barrel and the conductive touch pen tip according to any one of claims 1 to 4, wherein the conductive touch pen tip is replaceably mounted on the pen barrel. .   The conductive touch pen tip further includes an insertion portion attached to the pen barrel, and the insertion portion includes a convex ring portion provided around the rod body and a stretched non-conductive covering the convex ring portion. It has a member, The touch pen of Claim 5 characterized by the above-mentioned.   The convex ring portion is further provided with two corresponding storage chambers in the direction toward the head of the rod, and covers the rod main body by fitting the extended non-conductive member into each of the storage chambers. The touch pen according to claim 6, wherein the touch pen is provided.   The pen shaft cylinder is further provided with an insertion hole corresponding to the insertion portion, and an internal thread portion is provided along an inner wall surface of the insertion hole. Touch pen.   The outer surface of the tail portion of the conductive touch pen tip is further provided with a male screw portion, and the male screw portion of the conductive touch pen tip is screwed to the female screw portion of the pen barrel, The touch pen according to claim 8.

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