TWI425388B - Touch pen - Google Patents

Description

Stylus

The invention relates to a stylus, in particular to a stylus with adjustable thickness.

With the popularity of handheld electronic devices and touch-enabled liquid crystal display screens, handheld electronic devices without keyboards have gradually become the mainstream of handheld consumer electronic products. However, with the cancellation of the keyboard and the increasingly miniaturized LCD screen, in order to facilitate the display of the LCD screen as much as possible, it is necessary to develop the recognition by handwriting input, and the use of the stylus input becomes an effective method for solving such problems.

A conventional stylus includes a cylindrical body and a tip fixedly disposed at one end of the body. When in use, you can hold the subject and use the pen tip to touch or write on the screen. When not in use, the stylus can be stored in the jack of the handheld electronic device for easy carrying. However, in order to realize the thinning and thinning of the electronic device, it is necessary to reduce the space occupied by the stylus jack. Therefore, the general stylus has a thin body and the thickness of the stylus cannot be adjusted. When the user uses the stylus to write, it is inconvenient to apply force, which is easy to cause the strokes to be inconsistent when writing and the recognition rate is low. In addition, long-term writing is also easy to cause hand fatigue, causing a lot of inconvenience to the user.

In view of the above, it is necessary to provide a stylus with adjustable thickness.

A stylus includes a body and an air bag covering the body. A closed space is formed between the airbag and the body, and a communication portion is disposed on the sealed space, and external air can enter from the communication portion The airtight space is introduced to expand and deform the airbag, and gas in the sealed space can be discharged from the communication portion to restore the airbag to deformation.

The stylus is provided with an air bag covering the main body, and the external gas can be filled into the air bag to expand and deform the air bag to increase the diameter of the stylus and make it thicker, so that the user can hold the touch for the touch. Or writing and other operations, and the thickness of the stylus is determined by the volume of gas filled into the airbag, and the user can adjust as needed, which has strong adaptability. The gas in the confined space can also be discharged from the airbag to restore the airbag to its original state, so that the diameter of the stylus can be restored to the original size, thereby facilitating storage in the electronic device, and occupying a small space.

20‧‧‧ stylus

21‧‧‧ body

211‧‧‧ first end

212‧‧‧ second end

213‧‧‧Air passage

215‧‧‧ring groove

217‧‧‧Installation holes

22‧‧‧ pen head

223‧‧‧Connecting Department

224‧‧‧ nib

23‧‧‧Airbag

232‧‧‧Confined space

25‧‧‧Inflatable body

251‧‧‧Piston

252‧‧‧ piston rod

2521‧‧‧Connected end

2523‧‧‧ Pressing end

2524‧‧‧ Pressing Department

253‧‧‧Seal

256‧‧‧Flexible parts

258‧‧‧ air chamber

26‧‧‧Intake Department

264‧‧‧Connecting the airway

265‧‧‧Controls

266‧‧‧ Cone

27‧‧‧Exhaust department

271‧‧‧First fastening piece

2712‧‧‧Valves

273‧‧‧Second fasteners

1 is a schematic cross-sectional view of a stylus according to an embodiment of the present invention.

Figure 2 is a partially enlarged view of the portion II of Figure 1.

Figure 3 is a partial enlarged view of the portion III of Figure 1.

The stylus of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1 , a stylus pen 20 according to an embodiment of the present invention includes a main body 21 , a pen head 22 disposed at one end of the main body 21 , an air bag 23 covering the outside of the main body 21 , an inflating mechanism 25 for inflating the air bag 23 , and controlling external air. The air intake portion 26 of the airbag 23 and the air outlet portion 27 for discharging the gas in the airbag 23 are unidirectionally entered.

The body 21 is an elongated cylindrical body including a first end 211 and a second end 212 opposite the first end 211. An air flow passage 213 is provided in the main body 21. In this embodiment, the air flow passage 213 is a through hole that penetrates the main body 21 in the axial direction. An annular groove 215 is formed on the outer circumferential surface of the main body 21 adjacent to the first end 211 and the second end 212, respectively. Wherein the adjacent second end 212 A mounting hole 217 extending through the side wall of the main body 21 is further disposed above the annular groove 215.

The pen head 22 includes a connecting portion 223 and a pen tip 224 disposed at one end of the connecting portion 223. The connecting portion 223 is for fixedly connecting with the main body 21 and sealing the second end 212 of the main body 21. Of course, the pen tip 22 can also be integrally formed with the body 21.

The air bag 23 is made of an elastically deformable material which is swellable by the action of internal gas. In the present embodiment, the airbag 23 is made of rubber, and its original state, that is, the state when it is not assembled, is an elongated hose for covering the outside of the main body 21 and sealingly connecting with the main body 21 to be in the airbag 23 and A sealed space 232 is formed between the main bodies 21.

The inflator mechanism 25 includes a piston 251, a piston rod 252, a seal 253, and an elastic member 256.

The piston 251 has a disk shape having a diameter slightly smaller than the inner diameter of the air flow passage 213 of the main body 21, and is disposed in the air flow passage 213 and moves in the axial direction of the air flow passage 213.

The piston rod 252 is cylindrical and has an axially predetermined length including a connecting end 2521 and a pressing end 2523 opposite the connecting end 2521. The connecting end 2521 is fixedly coupled to the piston 251, and the pressing end 2523 is formed with a pressing portion 2524. The piston rod 252 is used for fixed connection with the piston 251 and drives the piston 251 to move.

The seal 253 is made of rubber and is sleeved on the periphery of the piston 251 and elastically abuts against the inner wall of the air passage 213 of the main body 21. In the present embodiment, the sealing member 253 is substantially bowl-shaped and protrudes toward one side of the piston 251 connecting the piston rod 252.

The resilient member 256 is used to provide an elastic force for resetting the piston 251, which may be in the form of a tension spring, a compression spring or a spring. In this embodiment, the elastic member 256 is a spiral compression spring, and the outer diameter of the compression spring is smaller than the inner diameter of the air flow passage 213 of the main body 21, so that the compression spring can be received in the air flow passage 213.

Referring to FIG. 2, the air inlet portion 26 includes a connecting air passage 264 and a control member 265 disposed inside the connecting air passage 264 for controlling airflow on and off. A tapered surface 266 is provided in the connecting air passage 264, and the control member 265 is movably disposed in a space defined by the tapered surface 266. Control member 265 can be a ball or a cone that can cooperate with tapered surface 266. To prevent the control member 265 from coming out of the connecting air passage 264, a stopper (not shown) may be provided at the large diameter end of the tapered surface 266. Of course, the air inlet portion 26 can also be a one-way air valve of other forms, which is not limited by the technical solution of the embodiment.

Referring to Fig. 3, the air outlet portion 27 is for communicating the inside of the airbag 23 with the outside atmosphere, and controls the discharge of gas from the inside of the airbag 23. In this embodiment, the air outlet portion 27 includes a first fastening component 271 and a second fastening component 273 that is buckled and sealed with the first fastening component 271. The periphery of the first fastening member 271 is sealingly connected to the airbag 23 and is provided with a valve 2712 communicating with the sealed space 232. Of course, the air outlet portion 27 can also be in other forms, and is not limited by the technical solution adopted in the embodiment. For example, a rotating member can be disposed, and the opening and closing of the valve can be realized by rotating the rotating member.

Referring to FIG. 1 to FIG. 3 simultaneously, the second end 212 of the main body 21 is first fixedly connected and sealed during assembly, and then the air inlet portion 26 is inserted into the mounting hole 217 of the main body 21 to communicate with the air flow passage 213. And the sealed space 232, and the large diameter end of the tapered surface 266 is directed toward the sealed space 232. Then, the elastic member 256 of the inflator 25 is placed in the air flow passage 213 to abut against the connecting portion 223 of the writing head 21. The piston rod 252 is fixedly coupled to the piston 251, and the seal member 253 is sleeved on the periphery of the piston 251, and the seal member 253 is projected toward the side of the piston rod 252. Then, the piston rod 252 is inserted into the air flow passage 213 to form a closed air chamber 258 together between the piston 251, the seal 253, the air flow passage 213 and the connecting portion 223 of the writing head 22. The peripheral edge of the first fastening member 271 of the air outlet portion 27 is sealingly connected to the airbag 23. The air bag 23 is sleeved on the outside of the main body 21, The two ends of the air bag 23 are respectively fixed in the two annular grooves 215 of the main body 21 by a clamp (not shown) engaged with the annular groove 215 to form a sealed space 232 between the air bag 23 and the main body 21.

When the stylus pen 20 is used for writing, the first fastening component 271 of the air outlet portion 27 is first engaged with the second fastening component 273 and sealed, and then the pressing portion 2524 of the piston rod 252 of the inflation mechanism 25 is repeatedly pressed. The air bag 23 is inflated to achieve a suitable outer diameter for easy grip. The specific process is as follows: pressing the pressing portion 2524 of the piston rod 252 causes the piston 251 to move downward and compress the elastic member 256. Since the seal member 253 disposed on the piston 251 is in the shape of a bowl and protrudes toward the side of the piston rod 252, when the piston 251 moves downward, the seal member 253 is radially opened and closely contacts the inner wall of the air flow passage 213. Therefore, the outside air cannot flow into the air chamber 258, the gas in the air chamber 258 is compressed, and the air pressure q1 in the air chamber 258 is increased. When the air pressure q1 is greater than the air pressure q2 in the sealed space 232, the gas in the air chamber 258 enters the airbag 23 through the air intake portion 26, and the air pressure q2 inside the airbag 23 is increased, so that the airbag 23 is inflated and deformed. When the pressing force on the piston rod 252 is cancelled, the piston 251 is automatically reset by the elastic force of the elastic member 256. At this time, the air pressure q1 in the air chamber 258 is decreased, and the air inlet portion 26 is closed. At the same time, the seal member 253 is contracted in the radial direction, and it has a clearance fit with the inner wall of the air flow passage 213, and the outside air can enter the air chamber 258. When the piston 251 is moved downward by pressing again, the inside of the sealed space 232 can be inflated again to inflate the airbag 23. By repeating the above operation, the airbag 23 can be continuously inflated to expand the airbag 23 to an appropriate size, so that the stylus 20 is thickened to be suitable for the operator to hold, and the volume of the gas charged in the airbag 23 can be adjusted according to actual needs. Adjustment.

When the stylus pen 20 is not used and is stored in the electronic device, the sealed connection between the first fastening member 271 and the second fastening member 273 of the air outlet portion 27 can be released to make the sealed space The gas in 232 is exhausted from the valve 2712. The elastic deformation of the air bag 23 is restored and abuts against the outer surface of the body 21, so that the diameter of the stylus pen 20 is reduced to substantially coincide with the diameter of the body 21. In this way, the stylus pen 20 can be conveniently stored in the accommodating portion of the electronic device, and the volume of the accommodating portion can be small, which is beneficial to improving the utilization of the internal space of the electronic device.

As a preferred solution, a fastening mechanism (not shown) may be disposed at the first end 211 of the body 21, and when the air is not required to be inflated into the sealed space 232, the fastening mechanism and the pressing end 2523 of the piston rod 252 are buckled. When they are required to be inflated into the sealed space 232, the fastening mechanism of the fastening mechanism and the piston rod 252 can be released and pressed.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

20‧‧‧ stylus

21‧‧‧ body

211‧‧‧ first end

212‧‧‧ second end

213‧‧‧Air passage

215‧‧‧ring groove

217‧‧‧Installation holes

22‧‧‧ pen head

223‧‧‧Connecting Department

224‧‧‧ nib

23‧‧‧Airbag

232‧‧‧Confined space

25‧‧‧Inflatable body

251‧‧‧Piston

252‧‧‧ piston rod

2521‧‧‧Connected end

2523‧‧‧ Pressing end

2524‧‧‧ Pressing Department

253‧‧‧Seal

256‧‧‧Flexible parts

258‧‧‧ air chamber

26‧‧‧Intake Department

27‧‧‧Exhaust department

271‧‧‧First fastening piece

Claims (11)

A stylus comprising a body, wherein the stylus further comprises an air bag covering the body, the air bag and the body form a closed space, and the closed space is provided with a communication portion from which the outside air can communicate The portion enters the confined space to expand and deform the air bag, and the gas in the confined space can be discharged from the communication portion to restore deformation of the air bag, the communication portion including an air inlet portion and an air outlet portion, the air outlet portion including the first buckle And a second fastening component, the first fastening component is sealingly connected with the airbag and is provided with a valve, and the second fastening component is connectable with the first fastening component to close the valve. The stylus according to claim 1, wherein the body is provided with an air flow passage, the air inlet portion communicates with the air flow passage and the sealed space, and the outside air can be unidirectional from the air flow passage through the air inlet portion. When entering the sealed space, the air outlet portion communicates with the sealed space and the outside, and the gas in the sealed space can be discharged from the sealed space through the air outlet portion. The stylus of claim 2, wherein the stylus further comprises an inflating mechanism, the inflating mechanism comprising a piston disposed in the airflow passage, a piston rod fixedly coupled to the piston and extending outside the main body An air chamber is formed between the piston and the air flow passage, and the air chamber communicates with the airtight space through the air inlet portion, and the piston moves relative to the air flow passage to change the air pressure of the gas in the air chamber. The stylus of claim 3, wherein the inflating mechanism further comprises a sealing member that is sleeved on the piston and elastically abuts against an inner wall of the airflow passage. The stylus according to claim 4, wherein the seal member is a bowl-shaped rubber member and protrudes toward one side of the piston rod. The stylus according to claim 3, wherein the piston is provided with a one-way air valve for controlling the one-way flow of the outside air into the air chamber, and the piston is sealingly connected with the air flow passage. The stylus according to claim 2, wherein the air inlet portion includes a connecting air passage and a control member, wherein the connecting air passage is provided with a tapered surface with a large diameter end facing the sealed space, and the control member is disposed on the tapered surface Within the defined space, the control gas enters the enclosed space unidirectionally from the connecting air passage. The stylus according to claim 7, wherein the control member is a sphere or a cone matching the tapered surface. The stylus of any one of claims 3 to 8, wherein the inflating mechanism further comprises an elastic member that provides an elastic force for resetting the piston. The stylus of claim 9, wherein the body is further provided with a fastening mechanism that is coupled to the piston rod. The stylus according to claim 9, wherein the elastic member is a spiral compression spring.