KR200321816Y1 - Stylus pen for portable handheld radiotelephone - Google Patents

Abstract

The present invention is a touch screen type consisting of a hollow cylinder, a shaft having a head installed on the upper side of the cylinder to reciprocate by a predetermined length in the vertical direction in the cylinder and a tip means installed on the lower side of the cylinder A stylus pen for manipulating a portable wireless terminal of the present invention, comprising: forming a predetermined insertion hole at an end of the cylinder, inserting a hollow bushing for supporting the shaft in the insertion hole, and hooking the outer peripheral surface of the shaft in place. By forming a rig jaw, the latching jaw of the shaft is caught in the bushing to limit the extension of the shaft to a certain length, so that only one insertion hole for inserting the bushing is to be processed, so that a plurality of conventional holes having different diameters can be processed. The processing time is significantly reduced than before, which leads to an increase in productivity and a reduction in manufacturing cost. There.

Description

Stylus pen of portable wireless terminal {STYLUS PEN FOR PORTABLE HANDHELD RADIOTELEPHONE}

The present invention relates to a stylus pen applied to a personal digital assistant (PDA) using a widescreen LCD module (or a widescreen LCD module) of a touch screen type. In particular, the present invention relates to a stylus pen of a portable wireless terminal having a structure capable of maximizing productivity by simplifying processing labor.

As portable wireless terminals become more and more popular, terminals of various functions and designs are appearing. In addition, as the terminal becomes smaller and lighter and shorter, the variety of functions is more highlighted. Therefore, in addition to the basic functions for transmitting and receiving voice with the other party, the wireless terminal is required to process Internet functions, text information, graphics, and the like. Accordingly, the display unit (LCD) module of the LCD module is gradually widened, whereas the volume of the terminal can gradually meet the needs of consumers only when the size of the terminal is gradually reduced to use a touch screen method without a separate keypad. Also, due to the nature of the product, an auxiliary mechanism for manipulating the touch screen can be used. The auxiliary device may be a writing instrument, and a stylus pen having a sharp tip may be used. The stylus pen may be carried separately by a user or fixed on the rear of the terminal body. do.

In addition, the stylus pen described above should be minimized because it should be mounted on a terminal or carried in a pocket when not in use. However, when used, it should be large enough to be grasped by the user's hand. In order to satisfy both of the above conditions, the head of the stylus pen is extended by a predetermined length.

1 is a perspective view of a portable wireless terminal having a stylus pen, the main body 100 of which is a main body, and the flip 200 and the flip 200 which are installed to be opened and closed on the main body 100. It consists of a hinge device 300 for connecting.

The main body 100 includes an upper casing frame 101 and a lower casing frame 102. An antenna unit 140 is installed at the top of the main body 100, and an ear piece 120 including a speaker is arranged below the antenna device 140. A touch screen LCD module 110 is installed below the ear piece 120, and a microphone device 130 is installed below the LCD module 110. On the lower side is provided a flip cover 200 that can protect all or a part of the LCD module 110. In addition, the reset button 103 is installed in place (installed on the side in this figure) of the terminal 100. The reset button has a function of allowing the user to selectively initialize the terminal.

At this time, one side of the terminal is provided with a terminal hanger for ease of carrying, and the end of the hanger is provided with a stylus pen 210 that can easily press the LCD module 110 of the touch screen. However, the stylus pen 210 may be carried without using a terminal hanger. In addition, although not shown, it is also preferable to be detachably mounted in place of the terminal.

2 is an operation of the stylus pen of FIG. 1, FIG. 3 is an exploded perspective view of the stylus pen according to the prior art, and FIG. 4 is a cross-sectional view of FIG. 3 according to the prior art, and includes a head installed on an upper portion of the cylinder 220. 240 is installed to expand and submerge in the direction of arrow A in FIG. In addition, the tip portion installed on the lower side of the cylinder 220 is composed of a predetermined tip cover 250 and a tip 251 installed to partially protrude from the lower side. At this time, the tip 251 of the stylus pen 210 enters the inside of the tip cover 250 when the user is pressed by careless and excessive pressing force or external impact (arrow B direction in FIG. 2). Has In addition, the end of the shaft 230 has a reset shaft 232 having a diameter capable of pressing the reset button of the terminal is formed to extend, and is separated from the shaft 230 by rotating the head 240 in the axial direction The reset shaft 232 may be used.

The tip portion has a tip 251 which protrudes downwardly from the tip cover 250 inside the tip cover 250 installed below the cylinder 220 and an elastic force for pressing the tip 251. It is comprised by accommodating the means 253.

The shaft 230 may be formed to extend the reset shaft 232 having a predetermined length on the upper side, it is formed to have a diameter capable of pressing the reset button (103 in Figure 1) of the terminal. Thereafter, a predetermined head 240 is installed on the shaft 230. The head 240 may be threaded by a threaded portion 231 formed at the upper end of the shaft 230. When the head 240 is fastened on the shaft 230, the reset shaft 232 is concealed into the head 240. Therefore, if necessary, the user may use the reset shaft 232 after detaching the head 240 from the shaft 230. In addition, a predetermined bushing 233 is disposed between the outer circumferential surface of the shaft 230 and the inner circumferential surface of the cylinder to minimize friction with the shaft 230 that extends and immerses in the cylinder 220.

At this time, as shown in Figure 4, the hollow cylinder 220 is subjected to various processing processes. First, the cylinder 220 is cut and the inner diameter operation in which the foundation hole operation is performed is performed. As shown in FIG. 4, the inner diameter operation processes the insertion hole 222 into which the bushing 233 of FIG. 3 is inserted, and the stepped hole that is prevented from being extended any longer after the shaft 230 is extended by a predetermined length ( 223). The insertion hole 222 is for inserting the bushing 233 in an interference fit manner, and the stepped hole 223 is formed to engage the locking step 235 formed at the end of the shaft 230. The insertion hole 222 and the stepped hole 223 are formed to be larger than the inner diameter of the shaft 230. Thereafter, the hollow cylinder is completed by performing tap work and outer diameter work after the reamer work.

However, as described above, in order to process the cylinder, since the inner hole is required to process the insertion hole for inserting the bushing and the step hole for catching the shaft through two processes, the number of processes increases. Productivity is lowered, and expensive costs are consumed.

An object of the present invention for solving the above problems is to provide a stylus pen of a portable wireless terminal is configured to reduce the labor and improve the productivity.

Another object of the present invention is to provide a stylus pen of a portable wireless terminal, which reduces manufacturing costs and reduces manufacturing costs.

1 is a perspective view of a portable wireless terminal with a stylus pen;

2 is an operation of the stylus pen of FIG.

3 is an exploded perspective view of a stylus pen according to the prior art;

4 is a cross-sectional view of FIG. 3 according to the prior art;

5 is an exploded perspective view of the stylus pen according to the present invention;

6 is a cross-sectional view of FIG. 5 according to the present invention; And

Figure 7 is a state diagram showing a state in which the head of the stylus pen according to the present invention is extended.

<Explanation of symbols for the main parts of the drawings>

20: cylinder 22: insertion hole

30: shaft 33: bushing

35: jamming jaw

In order to solve the above object, the present invention is provided in the lower side of the cylinder and a shaft having a hollow cylinder, a head provided on the upper side of the cylinder to reciprocate by a predetermined length in the vertical direction in the cylinder; A stylus pen for manipulating a touch screen type portable wireless terminal composed of a tip means, comprising: forming a predetermined insertion hole at an end of the cylinder, and inserting a hollow bushing for supporting a shaft in the insertion hole; It is characterized in that to form a hook in the outer peripheral surface of the shaft, the locking jaw of the shaft to catch the bushing to limit the extension of the shaft to a predetermined length.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. And, if it is determined that the subject matter of the present invention may be unnecessarily obscured, detailed description thereof will be omitted.

In the present invention, the flip type PDA is illustrated and described, but it is obvious that the touch screen is applicable to other devices using a stylus pen.

5 is an exploded perspective view of the stylus pen according to the present invention, FIG. 6 is a cross-sectional view of FIG. 5 according to the present invention, and FIG. 7 is a state diagram illustrating an extended state of the head of the stylus pen according to the present invention.

Stylus pen 10 according to the present invention is a hollow cylinder 20, the shaft 30 and the cylinder 20 is inserted to the upper side of the hollow cylinder 20 to be inserted and extended by a predetermined length is possible It is installed on the lower side of the) consists of a tip portion that can press the touch screen of the terminal.

The shaft 30 may be formed to extend the reset shaft 32 having a predetermined length on the upper side, it is formed to have a diameter capable of pressing the reset button (103 in Figure 1) of the terminal. Thereafter, a predetermined head 40 is installed on the shaft 30. The head 40 may be threaded by a threaded portion 31 formed at the upper end of the shaft 30. When the head 40 is fastened on the shaft 30, the reset shaft 32 is concealed into the head 40. Thus, if necessary, the user can use the reset shaft 32 after detaching the head 40 from the shaft 30. In addition, a predetermined bushing 33 may be interposed between the outer circumferential surface of the shaft 30 and the inner circumferential surface of the cylinder, thereby minimizing friction with the shaft 30 extending and subtracting in the cylinder 20.

The tip portion has a tip 51 protruding downwardly from the tip cover 50 inside the tip cover 50 installed below the cylinder 20, and an elastic force for pressing the tip 51. It is comprised by accommodating a means. The tip cover 50 may be fastened and fixed in the form of being threaded with the cylinder 20. Compression type coil spring 53 may be used as the elastic means. One end of the compression type coil spring 53 receives the support inside the cylinder and the other end presses the tip 51. At this time, since the step portion 52 larger than the diameter of the tip 51 is formed in place of the tip 51, the spring 53 is configured to press the tip 51. In addition, between the tip 51 and the tip cover 50, the tip 51 penetrates and serves as a spacer when a part of the tip cover 50 protrudes, and the tip 51 from the tip cover 50. A predetermined hollow bushing 55 may be disposed to prevent the departure of the departure. But it is not limited to this.

In addition, as shown in Figure 6, in order to support one end of the compression-type coil spring 53, the internal location of the cylinder 20 may be formed so that the entire blockage or a portion of the block is blocked, not shown. However, a bushing may also be provided between the closed end of the cylinder and the spring 53, which may also serve as a spacer.

At this time, the hollow bushing 33 is inserted into the inner circumferential surface of the cylinder 20. The hollow bushing 33 supports the outer circumferential surface of the shaft 30 during the immersion and extension of the shaft 30 and prevents friction between the outer circumferential surface of the shaft 30 and the inner circumferential surface of the cylinder 20. Will be The bushing 33 may be fixed in an interference fit manner on the insertion hole 22 formed in the inner circumferential surface of the cylinder 20. In addition, in order to perform the operation according to the present invention, the outer diameter of the bushing 33 is formed to be larger than the inner diameter of the cylinder (20).

Thereafter, at the outer circumferential surface of the shaft 30, a locking step 35 is formed to prevent the shaft 30 from extending beyond a predetermined length. The locking jaw 35 may be a stepped portion formed to be larger than an outer circumferential surface of the shaft 30. Therefore, when the shaft 30 is extended beyond a predetermined length, as shown in FIG. 7, the engaging jaw 35 of the shaft 30 is connected to the end of the bushing 33 fixed to the cylinder 20. By catching, it is possible to prevent the shaft 30 is completely separated from the cylinder 20.

In this case, the catching jaw 35 may be formed at an appropriate position according to the position where the bushing 33 is fixed inside the cylinder, which is essentially a process of forming once when machining or injecting the shaft 30. Because it is not a cumbersome process.

In other words, the cylinder 20 may be completed by one inner diameter operation without leaving a stepped hole to hook the separate shaft 30.

As described above, since the stylus pen according to the embodiment of the present invention only needs to process only one insertion hole for inserting the bushing, the number of machining processes is significantly reduced compared to when machining holes having a plurality of diameters in the related art, thereby increasing productivity. And the manufacturing cost can be reduced.

Claims (3)

A portable wireless touch screen system comprising a hollow cylinder, a shaft having a head installed above the cylinder to reciprocate by a predetermined length in the cylinder in the vertical direction, and a tip means installed below the cylinder. In the stylus pen for operating a terminal, A predetermined insertion hole is formed at the end of the cylinder, a hollow bushing for supporting the shaft is inserted in the insertion hole, and a gap is formed at the outer circumferential surface of the shaft so that the locking step of the shaft is connected to the bushing. Stylus pen of the portable wireless terminal, characterized in that the hanging to limit the extension of the shaft to a certain length. The method of claim 1, The outer diameter of the bushing is formed to be larger than the inner diameter of the cylinder stylus pen of a portable wireless terminal. The method according to claim 1 or 2, The bushing is a stylus pen of a portable wireless terminal, characterized in that fixed to the insertion hole of the cylinder by the interference fit method.