WO2022198876A1 - 电容触控笔 - Google Patents

电容触控笔 Download PDF

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Publication number
WO2022198876A1
WO2022198876A1 PCT/CN2021/110172 CN2021110172W WO2022198876A1 WO 2022198876 A1 WO2022198876 A1 WO 2022198876A1 CN 2021110172 W CN2021110172 W CN 2021110172W WO 2022198876 A1 WO2022198876 A1 WO 2022198876A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixed
assembly
pen
arm
capacitive touch
Prior art date
Application number
PCT/CN2021/110172
Other languages
English (en)
French (fr)
Inventor
赵兴军
付松
Original Assignee
深圳市信维通信股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202110325839.2A external-priority patent/CN113190127B/zh
Priority claimed from CN202110327378.2A external-priority patent/CN113190128B/zh
Priority claimed from CN202110334957.XA external-priority patent/CN113220142B/zh
Priority claimed from CN202110338966.6A external-priority patent/CN113220143B/zh
Application filed by 深圳市信维通信股份有限公司 filed Critical 深圳市信维通信股份有限公司
Priority to US17/466,169 priority Critical patent/US20220308688A1/en
Publication of WO2022198876A1 publication Critical patent/WO2022198876A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks

Definitions

  • the present invention relates to the technical field of touch control devices, and in particular, to a capacitive touch pen.
  • capacitive screens With the increasing popularity of capacitive screens, more and more electronic products such as tablet computers, mobile phones, and navigators have begun to use capacitive screens for operation control. Although capacitive screens can be touched with fingers, it is easy to mess up the display screen because of dirty fingers. Dirty, and the touch accuracy of the fingers is not very good, some professionals can not achieve the required accuracy with their fingers, so more and more consumers are looking for high-quality capacitive stylus to operate the touch screen.
  • the existing capacitive stylus generally includes a pen holder and a pen tip assembly, a battery, an antenna, a main control board, etc., which are arranged in the pen holder.
  • the sensor includes an elastic body and a strain gauge arranged on the elastic body, and the elastic body is usually a double-arm support structure (such as a U-shaped structure). After the pen tip is stressed, it is transmitted to the strain sensor, and the two arms of the strain sensor are deformed by force.
  • the strain gauge is designed on one of the arms, and its deformation outputs an electrical signal.
  • the U-shaped elastomer can effectively solve the problem of large differences in the relationship between the load and the strain gauge deformation at different writing angles.
  • the applicant proposes a new type of capacitive stylus.
  • the technical problem to be solved by the present invention is to provide a capacitive touch pen with a novel structure.
  • a capacitive touch pen including a fixing structure and a pen tip assembly arranged in the fixing structure
  • the fixing structure includes a pen holder
  • the pen tip assembly includes a pen tip shaft and a strain sensor
  • the strain sensor includes an elastic
  • the elastic body is connected with the pen tip shaft and the fixed structure, wherein the elastic body is L-shaped, and also includes an energy absorption structure arranged on the pen tip shaft, and the energy absorption structure is connected with the fixed structure. the fixed structure.
  • the beneficial effects of the present invention are: in the capacitive touch pen, the L-shaped elastic body cooperates with the energy-absorbing structure to form a double-supported elastic buffer structure, which is novel and practical in structure, and can make the capacitive touch pen rotate to different angles, the same In the case of load, the deformation rate of strain gauge is small, so that the consistent performance of signal output is superior, and the same use effect and experience as the U-shaped elastic body are achieved; Share part of the force of the elastic body, reduce the deformation amount of the elastic body, and improve the service life of the elastic body; in addition, the capacitive stylus has a good linear relationship between the strains under different writing angles and inclination angles, and the chip design will be done later. It has great advantages in selection.
  • FIG. 1 is a schematic structural diagram of the overall structure of the capacitive touch pen of the present invention
  • FIG. 2 is a schematic structural diagram of the capacitive touch pen of the present invention (after the pen holder is hidden);
  • FIG 3 is a schematic structural diagram of the capacitive touch pen of the present invention (after hiding part of the structure of the pen holder and the pen holder);
  • FIG. 4 is a schematic structural diagram of a pen tip assembly in a capacitive touch pen according to Embodiment 1 of the present invention.
  • FIG. 5 is an exploded view of the tip assembly in the capacitive touch pen according to the first embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a strain sensor in a capacitive touch pen according to Embodiment 1 of the present invention.
  • FIG. 7 is a cross-sectional view of a bushing assembly in the capacitive touch pen according to Embodiment 1 of the present invention.
  • FIG. 8 is a state diagram of a capacitive touch pen in the prior art (when the pen holder is inclined at 45° and self-rotated by 0°);
  • FIG. 9 is a state diagram of a capacitive stylus in the prior art (when the pen holder is tilted by 45° and rotated by 45°);
  • FIG. 10 is a state diagram of a capacitive stylus in the prior art (when the pen holder is tilted by 45° and rotated by 90°);
  • FIG. 11 is a state diagram of a capacitive stylus in the prior art (when the pen holder is tilted by 45° and rotated by 135°);
  • FIG. 12 is a state diagram of a capacitive touch pen in the prior art (when the pen holder is inclined by 45° and rotated by 180°);
  • FIG. 13 is a state diagram of the capacitive stylus according to the first embodiment of the present invention (when the pen holder is tilted by 45° and rotated by 0°);
  • FIG. 14 is a state diagram of the capacitive stylus according to the first embodiment of the present invention (when the pen holder is tilted by 45° and rotated by 45°);
  • FIG. 15 is a state diagram of the capacitive stylus according to the first embodiment of the present invention (when the pen holder is tilted by 45° and rotated by 90°);
  • 16 is a state diagram of the capacitive stylus according to the first embodiment of the present invention (when the pen holder is tilted by 45° and rotated by 135°);
  • FIG 17 is a state diagram of the capacitive stylus according to the first embodiment of the present invention (when the pen holder is tilted by 45° and rotated by 180°);
  • FIG. 18 is a schematic structural diagram of a pen tip assembly in a capacitive touch pen according to Embodiment 2 of the present invention.
  • FIG. 19 is a cross-sectional view of a shaft sleeve assembly in a capacitive touch pen according to Embodiment 2 of the present invention.
  • FIG. 20 is a schematic structural diagram of a pen tip assembly in a capacitive touch pen according to Embodiment 3 of the present invention.
  • 21 is a top view of the elastic support frame in the capacitive touch pen according to the third embodiment of the present invention.
  • FIG. 22 is an exploded view of the tip assembly in the capacitive touch pen according to the fourth embodiment of the present invention.
  • nib assembly 21, nib shaft; 211, flat plate part; 2111, limit protruding strip; 212, threaded section; 213, interference step; 214, installation post; 215, installation part; 2151, installation plate part; cylinder; 22, electrode assembly; 23, strain sensor; 231, elastomer; 2311, first arm; 2312, second arm; 232, strain gauge; 24, bushing assembly; 241, inner bushing; 242, outer Axle sleeve; 2421, annular part; 2422, extension part; 243, inner arc surface; 244, outer arc surface; 245, chamfering structure; 25, connecting pressure piece; 26, pen tip locking piece; 27, elastic support frame ; 271, fixed part; 272, elastic branch part; 2721, first arm; 2722, inclined arm; 2723, second arm; 273, reinforced spoke;
  • the capacitive touch pen includes a fixed structure and a pen tip assembly disposed in the fixed structure.
  • the fixed structure includes a pen holder
  • the pen tip assembly includes a pen tip shaft and a strain sensor
  • the strain sensor includes an elastic body and a pen tip set in the elastic body.
  • the elastic body connects the pen tip shaft and the fixed structure, wherein the elastic body is L-shaped, and also includes an energy absorbing structure arranged on the pen tip shaft, and the energy absorbing structure is connected to the fixing structure.
  • the beneficial effects of the present invention are: in the capacitive touch pen, the L-shaped elastic body cooperates with the energy-absorbing structure to form a double-supported elastic buffer structure, which has a novel and practical structure, and can make the capacitive touch pen rotate to At different angles and under the same load, the strain gage deformation rate is small, so that the signal output is consistent and the performance is superior, achieving the same use effect and experience as the U-shaped elastic body;
  • the increase of the energy structure can share part of the force of the elastic body, reduce the deformation amount of the elastic body, and thus improve the service life of the elastic body; in addition, the capacitive stylus has a better linear relationship of strain under different writing angles and inclinations. , which has great advantages in the subsequent design of chip selection.
  • the elastic body includes a connected first arm and a second arm, the first arm is connected and fixed with the fixing structure, the second arm is fixed on the pen tip shaft, and the A strain gauge is provided on the first arm.
  • the strain sensor has a simple structure, is easy to manufacture, and has a low production cost.
  • the pen tip shaft includes a flat plate portion, the second arm is fixed on the flat plate portion, and the flat plate portion is provided with a limiting protruding strip for limiting the second arm .
  • the setting of the limiting protruding strips can play the role of limiting the second arm, which facilitates the assembly of the elastic body and the nib shaft, and improves product consistency; in addition, the limiting protruding strips can also protect the second arm. The function of the arm prevents the second arm from being accidentally scratched during the assembly process.
  • the pen tip assembly further includes a chip assembly electrically connected to the strain sensor, and the chip assembly is disposed on the limiting ridge.
  • the limiting protruding strip not only plays the role of limiting and protecting the second arm, but also plays the role of providing a mounting position for the chip assembly, which realizes the multi-purpose of one thing, and makes the structure of the pen tip assembly more compact. Leave enough space for other components of the capacitive stylus.
  • the energy absorbing structure is disposed away from the strain gauge.
  • the energy absorbing structure is arranged away from the strain gauge, which can better share the force of the elastic body, reduce the deformation amount of the elastic body, and thus make the elastic body more durable.
  • the fixing structure further includes a pen holder provided in the pen holder and/or a shielding assembly provided in the pen holder.
  • the energy absorbing structure includes a shaft sleeve assembly
  • the shaft sleeve assembly includes a matching inner shaft sleeve and an outer shaft sleeve
  • the inner shaft sleeve is sleeved on the pen tip shaft
  • the outer shaft sleeve is sleeved.
  • the shaft sleeve is fixed on the fixed structure.
  • the number of the outer shaft sleeves in the shaft sleeve assembly is two, the outer shaft sleeve includes an annular portion, the annular portion has an inner arc surface, and the inner shaft
  • the outer peripheral wall of the sleeve is provided with an outer arc surface matched with the inner arc surface, and the annular portions of the two outer shaft sleeves are close to each other to form a limiting cavity for limiting the inner shaft sleeve.
  • the two outer shaft sleeves in the shaft sleeve assembly are connected and fixed to each other.
  • the shaft sleeve assembly is an integral structure, which can facilitate the assembly and production of the pen tip assembly.
  • the outer sleeve further includes an extension portion, the extension portion is located outside the annular portion and is connected to the annular portion, and the outer sleeve passes through the extension portion fixed on the fixed structure.
  • extension part can not only facilitate the forming process of the outer bushing, but also facilitate the connection and fixing work of the outer bushing and the fixing structure.
  • the inner shaft sleeve is sleeved in the middle area of the pen tip shaft.
  • an installation post is provided at the rear end of the pen tip shaft, and the inner shaft sleeve is sleeved on the installation post.
  • the installation position of the shaft sleeve assembly on the pen tip shaft can be set as required, which is beneficial to enrich the structural diversity of the capacitive stylus.
  • the space occupied by the pen tip assembly in the length direction can also be reduced, so that the internal structure of the capacitive touch pen is more compact.
  • a mounting post is arranged at the rear end of the nib shaft, the installation work of the shaft sleeve assembly on the nib shaft can be facilitated.
  • the energy absorbing structure includes an elastic support frame.
  • the elastic support frame as an energy-absorbing structure is not only easy to manufacture, but also has a good energy-absorbing effect.
  • the elastic support frame includes a fixed part and a plurality of elastic branch parts arranged on the fixed part, the fixed part is connected and fixed with the pen tip shaft, and the elastic branch parts are connected to The fixing structure is connected and fixed.
  • the elastic support frame has a simple and stable structure, and can provide sufficient buffer force.
  • a plurality of the elastic branch portions are evenly distributed along the periphery of the fixing portion.
  • the evenly distributed arrangement of a plurality of elastic branches can allow the pen tip shaft to receive a more balanced buffer force, which is beneficial to improve the monitoring accuracy of the strain sensor.
  • the elastic support frame further includes reinforcing spokes, and two adjacent elastic branch parts are connected by the reinforcing spokes.
  • the arrangement of the reinforced spokes can improve the strength of the elastic support frame itself, and can effectively prevent the reinforced spokes from being irreversibly deformed during the transport process; at the same time, the arrangement of the reinforced spokes can also improve the elastic modulus of the elastic support frame. , thereby improving the buffering effect of the elastic support frame and further sharing the stress on the strain sensor; in addition, the arrangement of the reinforcing spokes can also provide convenience for the connection between the elastic branch and the fixed structure, and avoid the elastic branch when the elastic branch is connected with the fixed structure. Branches sway freely.
  • the energy absorbing structure includes an elastic member and a fixing member, the fixing member is fixed on the fixing structure, and the elastic member is respectively connected to the fixing member and the pen tip shaft.
  • the energy absorbing structure is simple in structure, easy to manufacture and has good working stability.
  • the fixing member includes a fixing plate and a limiting structure provided on the fixing plate.
  • the setting of the limiting structure can limit the position of the elastic member, which facilitates the assembly of the elastic member.
  • the elastic member is a spring, and one end of the spring is matched with the limiting structure.
  • the limiting structure can prevent the elastic member from deviating, which is beneficial to ensure the structural stability of the capacitive touch pen.
  • the limiting structure is annular or columnar.
  • the limiting structure is simple in structure and easy to form.
  • a first embodiment of the present invention is a capacitive touch pen, which can be used to touch touch control devices such as mobile phones, tablet computers, and navigators.
  • the capacitive stylus includes a fixed structure, and the fixed structure includes a pen holder 1 , and the pen holder 1 is provided with a pen tip assembly 2 , a chip assembly 3 , a main control board 4 , a battery 5 and an antenna.
  • Assembly 6, the antenna assembly 6, the chip assembly 3 and the battery 5 are respectively electrically connected to the main control board 4, and the pen tip assembly 2 is located at the head of the pen holder 1.
  • the fixing structure further includes a pen support 7 and a shielding assembly 8, the pen support 7 and the shielding assembly 8 are respectively arranged in the pen holder 1, the pen support 7 is connected to the pen tip assembly 2, and the shielding assembly 8. Cover the pen tip assembly 2 to shield the pen tip assembly 2.
  • the antenna assembly 6, the main control board 4 and the battery 5 are respectively fixed on the pen support 7.
  • the pen tip assembly 2 is connected and fixed with the pen holder 7 through the shielding assembly 8 .
  • the pen holder 7 and/or the shielding component 8 may not be provided in the fixing structure.
  • the pen tip component 2, the antenna component 6, the main The control board 4 and the battery 5 can be directly fixed on the pen holder 1 .
  • the pen holder 7 is a metal injection-molded structural member, so that the design and manufacture of the structure of the pen holder 7 can be facilitated.
  • the main control board 4 is provided with a wireless charging module 41 , the wireless charging module 41 is electrically connected to the main control board 4 , and the pen holder 7 is A window 71 is provided corresponding to the wireless charging module 41 .
  • the pen tip assembly 2 includes a pen tip shaft 21 , an electrode assembly 22 and a strain sensor 23 , the electrode assembly 22 is electrically connected to the chip assembly 3 , and the strain sensor 23 includes an elastic body 231 and the strain gauge 232 provided on the elastic body 231, the elastic body 231 is L-shaped, and the elastic body 231 is connected and fixed with the pen tip shaft 21 and the fixing structure respectively.
  • the pen tip assembly 2 It also includes an energy-absorbing structure sleeved on the middle area of the pen tip shaft 21, and the energy-absorbing structure is connected to the fixing structure.
  • the elastic body 231 includes a connected first arm 2311 and a second arm 2312, the first arm 2311 is connected and fixed with the fixing structure, and the second arm 2312 is fixed on the pen tip shaft 21, so
  • the strain gauge 232 is disposed on the first arm 2311 .
  • the nib shaft 21 includes a flat plate portion 211
  • the second arm 2312 is fixed on the flat plate portion 211
  • the flat plate portion 211 is provided with a limiting protruding strip for limiting the second arm 2312 2111, the number of the limiting protruding strips 2111 is two, and the second arm 2312 is located between the two limiting protruding strips 2111.
  • the end of the first arm 2311 away from the end of the second arm 2312 is fixed on the fixing structure. In this way, the assembly difficulty of the capacitive touch pen can be reduced, materials can be saved, and the strain can be guaranteed.
  • the first arm 2311 is disposed close to the end of the pen tip shaft 21 away from the electrode assembly 22 , that is, the first arm 2311 and the energy absorbing structure leave enough space between them.
  • first arm 2311 and the shielding assembly 8 are welded and fixed, and the second arm 2312 is welded and fixed on the flat plate portion 211 .
  • first arm 2311 can also be directly fixed on the pen holder 7 or the pen holder 1, and the specific fixing method can be screwed, glued, clipped, etc.; the second arm 2312 can also be screwed , gluing, clamping and other fixing methods are connected and fixed with the nib shaft 21 .
  • the chip assembly 3 is preferably arranged on the flat plate portion 211 .
  • the chip assembly 3 is electrically connected to the strain gauge 232 and the electrode assembly 22, respectively. Further preferably, the chip assembly 3 is fixed on the limiting ridges 2111. In this way, the limiting ridges 2111 not only function as a position limiter, The function of protecting the second arm 2312 also plays the role of providing a mounting position for the chip assembly 3 , so that one thing can be used for multiple purposes.
  • the energy absorbing structure includes a shaft sleeve assembly 24
  • the shaft sleeve assembly 24 includes a matching inner shaft sleeve 241 and an outer shaft sleeve 242 .
  • the outer shaft sleeve 242 is fixed on the fixed structure and is sleeved on the middle area of the pen tip shaft 21 .
  • the number of the outer shaft sleeves 242 in the shaft sleeve assembly 24 is two, the outer shaft sleeve 242 includes an annular portion 2421, the annular portion 2421 has an inner arc surface 243, the inner shaft
  • the outer peripheral wall of the sleeve 241 is provided with an outer arc surface 244 that matches the inner arc surface 243 , and the annular portions 2421 of the two outer sleeves 242 are close to each other to form a limiting space for the inner sleeve 241
  • the diameter of the two openings of the limiting cavity is smaller than the maximum diameter of the outer arc surface 244, so that the inner sleeve 241 can be prevented from being separated from the limiting cavity, which is beneficial to ensure the structural stability of the sleeve assembly 24. .
  • the two outer shaft sleeves 242 in the shaft sleeve assembly 24 are connected and fixed to each other.
  • the outer shaft sleeve 242 further includes an extension portion 2422, and the extension portion 2422 is located in the annular
  • the outer side of the portion 2421 is connected to the annular portion 2421 , and the outer sleeve 242 is fixed on the fixing structure through the extending portion 2422 .
  • the two extension parts 2422 in the shaft sleeve assembly 24 are welded and fixed.
  • the nib shaft 21 is further provided with a threaded section 212 and a connecting pressure piece 25 for pressing the electrode assembly 22 , and a nib locking member 26 is threadedly connected to the threaded section 212 .
  • the pen tip locking member 26 presses the connecting pressing member 25 to lock the electrode assembly 22 .
  • the nib locking member 26 locks the connecting pressing member 25, at least a part of the connecting pressing member 25 is located in the nib locking member 26, thereby forming a pressing force.
  • the inner shaft sleeve 241 and the nib shaft 21 are in interference fit.
  • the nib shaft 21 is provided with an interference step 213, and both ends of the inner shaft sleeve 241 are respectively connected with the interference step 213. and the nib locking member 26, so that the inner sleeve 241 and the nib shaft 21 are stably connected and fixed.
  • the pen tip locking member 26 not only plays the role of locking the connecting pressure plate, but also plays the role of locking the inner shaft sleeve 241 , realizing the multi-purpose of one thing.
  • the inner shaft sleeve 241 and the pen tip shaft 21 may also be connected, fixed or reinforced by means of bonding, snap connection, or the like.
  • the annular portion 2421 and the extending portion 2422 are an integral structure formed by drawing a sheet of metal.
  • the applicant conducted simulation tests on the capacitive stylus in the prior art (the elastic body is U-shaped) and the capacitive stylus in this embodiment.
  • Pen tilt angle Force size Pen barrel rotation angle Deformation at the strain gauge stress at strain gauge 1 45° 400N 0° 0.015573mm 81.51MPa 2 45° 400N 45° 0.015861mm 111.45MPa 3 45° 400N 90° 0.0161893mm 152MPa 4 45° 400N 135° 0.016276mm 147.48MPa 5 45° 400N 180° 0.016068mm 119.31MPa
  • Pen tilt angle Force size Pen barrel rotation angle Deformation at the strain gauge stress at strain gauge 1 45° 400N 0° 0.031945mm 205.48MPa 2 45° 400N 45° 0.031905mm 206.14MPa 3 45° 400N 90° 0.031765mm 206.37MPa 4 45° 400N 135° 0.031604mm 205.41MPa 5 45° 400N 180° 0.031518mm 204.42MPa
  • the deformation change rate ⁇ of the stress sensor in the capacitive stylus of this embodiment is:
  • /Max 1.3367%.
  • the state diagrams of the capacitive stylus in Table 2 can refer to FIGS. 13 to 17 .
  • the deformation change rate ⁇ of the stress sensor in the capacitive touch pen of this embodiment is much smaller than that of the stress sensor in the capacitive touch pen of the prior art, which proves that the capacitive touch pen of this embodiment has a deformation change rate ⁇ .
  • the stylus has superior signal output consistency.
  • the stress of the stress sensor in the capacitive stylus of this embodiment is generally larger than that of the stress sensor in the capacitive stylus of the prior art. Therefore, the capacitive stylus of this embodiment also has a signal output Clear advantage.
  • the second embodiment of the present invention is a capacitive touch pen, which can be used to touch touch control devices such as mobile phones, tablet computers, and navigators.
  • the capacitive stylus includes a fixing structure
  • the fixing structure includes a pen holder 1, and the pen holder 1 is provided with a pen tip assembly 2, a chip assembly (not shown), a main control board 4, A battery 5 and an antenna assembly 6, the antenna assembly 6, the chip assembly and the battery 5 are respectively electrically connected to the main control board 4, the pen tip assembly 2 is located at the head of the pen holder 1, this embodiment
  • the fixing structure further includes a pen holder 7 and a shielding component 8, the pen holder 7 and the shielding component 8 are respectively arranged in the pen holder 1, and the pen holder 7 is connected to the pen tip component 2, so The shielding assembly 8 covers the pen tip assembly 2 to shield the pen tip assembly 2.
  • the antenna assembly 6, the main control board 4 and the battery 5 are respectively fixed on the pen support 7.
  • the The pen tip assembly 2 is connected and fixed to the pen support 7 through the shielding assembly 8 .
  • the pen holder 7 and/or the shielding assembly 8 may not be provided in the fixing structure.
  • the pen tip assembly 2, the antenna assembly 6, the main The control board 4 and the battery 5 can be directly fixed on the pen holder 1 .
  • the pen holder 7 is a metal injection-molded structural member, so that the design and manufacture of the structure of the pen holder 7 can be facilitated.
  • the main control board 4 is provided with a wireless charging module 41, the wireless charging module 41 is electrically connected to the main control board 4, and the pen holder 7 has a corresponding wireless charging module.
  • the pen tip assembly 2 includes a pen tip shaft 21, an electrode assembly 22 and a strain sensor 23.
  • the electrode assembly 22 is electrically connected to the chip assembly.
  • the strain sensor 23 includes an elastic body 231 and a The strain gauge 232 on the elastic body 231, the elastic body 231 is L-shaped, the elastic body 231 is respectively connected and fixed with the pen tip shaft 21 and the fixing structure, and also includes the mounting post 214 and the pen tip shaft 21.
  • the energy-absorbing structure disposed on the mounting post 214 is connected to the fixing structure.
  • the elastic body 231 includes a connected first arm 2311 and a second arm 2312, the first arm 2311 is connected and fixed with the fixing structure, and the second arm 2312 is fixed on the pen tip shaft 21, so
  • the strain gauge 232 is disposed on the first arm 2311 .
  • the nib shaft 21 includes a flat plate portion 211
  • the second arm 2312 is fixed on the flat plate portion 211
  • the flat plate portion 211 is provided with a limiting protruding strip for limiting the second arm 2312 2111, the number of the limiting protruding strips 2111 is two, and the second arm 2312 is located between the two limiting protruding strips 2111.
  • the end of the first arm 2311 away from the end of the second arm 2312 is fixed on the fixing structure. In this way, the assembly difficulty of the capacitive touch pen can be reduced, materials can be saved, and the strain can be guaranteed.
  • the mounting post 214 is provided at the end of the pen tip shaft 21 away from the electrode assembly 22, and the first arm 2311 is provided away from the mounting post 214. A sufficient distance is reserved between one arm 2311 and the energy absorbing structure.
  • the first arm 2311 is welded and fixed to the shielding assembly 8
  • the second arm 2312 is welded and fixed to the flat plate portion 211
  • the energy absorbing structure is welded and fixed to the shielding assembly 8 .
  • the first arm 2311 can also be directly fixed on the pen holder 7 or the pen holder 1, and the specific fixing method can be screwed, glued, clipped, etc.; the energy-absorbing structure can also be directly fixed on the pen On the bracket 7 or the pen holder 1, the specific fixing method can be screwed, glued, or clipped;
  • the chip assembly is disposed on the flat plate portion 211 , and the chip assembly is connected to the strain gauge 232 and the strain gauge 232 respectively.
  • the electrode assembly 22 is electrically connected, and further preferably, the chip assembly is fixed on the limiting protruding strip 2111, so that the limiting protruding strip 2111 not only functions to limit and protect the second arm 2312, but also To the role of providing installation locations for chip components, one thing is multi-purpose.
  • the energy absorbing structure includes a shaft sleeve assembly 24, and the shaft sleeve assembly 24 includes a matching inner shaft sleeve 241 and an outer shaft sleeve 242.
  • the inner shaft sleeve 241 The outer shaft sleeve 242 is fixed on the fixed structure by being sleeved on the mounting post 214 .
  • the number of the outer shaft sleeves 242 in the shaft sleeve assembly 24 is two, the outer shaft sleeve 242 includes an annular portion 2421, the annular portion 2421 has an inner arc surface 243, the inner shaft
  • the outer peripheral wall of the sleeve 241 is provided with an outer arc surface 244 that matches the inner arc surface 243 , and the annular portions 2421 of the two outer sleeves 242 are close to each other to form a limiting space for the inner sleeve 241
  • the diameter of the two openings of the limiting cavity is smaller than the maximum diameter of the outer arc surface 244, so that the inner sleeve 241 can be prevented from being separated from the limiting cavity, which is beneficial to ensure the structural stability of the sleeve assembly 24. .
  • the two outer shaft sleeves 242 in the shaft sleeve assembly 24 are connected and fixed to each other.
  • the outer shaft sleeve 242 further includes an extension portion 2422 .
  • 2422 is located at the outer side of the annular portion 2421 and is connected to the annular portion 2421 , and the outer sleeve 242 is fixed to the fixing structure through the extending portion 2422 .
  • the two extension parts 2422 in the shaft sleeve assembly 24 are welded and fixed, and the inner shaft sleeve 241 is welded and fixed on the mounting post 214 .
  • the two outer shaft sleeves 242 are fixed in other ways.
  • the inner shaft sleeve 241 is provided with a mounting hole matched with the mounting post 214 , and both ends of the installation hole are respectively provided with chamfered structures 245 .
  • the chamfered structure 245 can play a guiding role, thereby facilitating the installation of the inner bushing 241; when the inner bushing 241 and the mounting post 214 are welded, the chamfered structure 245 can play a role of tin absorbing function, thereby improving the stability of the connection between the inner bushing 241 and the mounting post 214 . It can be seen from this that the chamfered structure 245 also realizes a multi-purpose in this embodiment.
  • the annular portion 2421 and the extending portion 2422 are an integral structure formed by drawing a sheet of metal.
  • the third embodiment of the present invention is a capacitive touch pen, which can be used to touch touch control devices such as mobile phones, tablet computers, and navigators.
  • the capacitive stylus includes a fixing structure
  • the fixing structure includes a pen holder 1, and the pen holder 1 is provided with a pen tip assembly 2, a chip assembly (not shown), a main control board 4, A battery 5 and an antenna assembly 6, the antenna assembly 6, the chip assembly and the battery 5 are respectively electrically connected to the main control board 4, the pen tip assembly 2 is located at the head of the pen holder 1, this embodiment
  • the fixing structure further includes a pen holder 7 and a shielding component 8, the pen holder 7 and the shielding component 8 are respectively arranged in the pen holder 1, and the pen holder 7 is connected to the pen tip component 2, so The shielding assembly 8 covers the pen tip assembly 2 to shield the pen tip assembly 2.
  • the antenna assembly 6, the main control board 4 and the battery 5 are respectively fixed on the pen support 7.
  • the The pen tip assembly 2 is connected and fixed to the pen support 7 through the shielding assembly 8 .
  • the pen holder 7 and/or the shielding assembly 8 may not be provided in the fixing structure.
  • the pen tip assembly 2, the antenna assembly 6, the main The control board 4 and the battery 5 can be directly fixed on the pen holder 1 .
  • the pen holder 7 is a metal injection-molded structural member, so that the design and manufacture of the structure of the pen holder 7 can be facilitated.
  • the main control board 4 is provided with a wireless charging module 41, the wireless charging module 41 is electrically connected to the main control board 4, and the pen holder 7 has a corresponding wireless charging module.
  • the pen tip assembly 2 includes a pen tip shaft 21, an electrode assembly 22 and a strain sensor 23, the electrode assembly 22 is electrically connected with the chip assembly, and the strain sensor 23 includes an elastic body 231 and a device
  • the strain gauge 232 on the elastic body 231, the elastic body 231 is L-shaped, the elastic body 231 is connected and fixed with the pen tip shaft 21 and the fixing structure respectively, and also includes an energy absorbing device arranged on the pen tip shaft 21.
  • the energy-absorbing structure is connected to the fixing structure.
  • the energy-absorbing structure includes an elastic support frame 27 .
  • the elastic body 231 includes a connected first arm 2311 and a second arm 2312, the first arm 2311 is connected and fixed with the fixing structure, and the second arm 2312 is fixed on the pen tip shaft 21, so
  • the strain gauge 232 is disposed on the first arm 2311 .
  • the nib shaft 21 includes a flat plate portion 211
  • the second arm 2312 is fixed on the flat plate portion 211
  • the flat plate portion 211 is provided with a limiting protruding strip for limiting the second arm 2312 2111, the number of the limiting protruding strips 2111 is two, and the second arm 2312 is located between the two limiting protruding strips 2111.
  • the end of the first arm 2311 away from the end of the second arm 2312 is fixed on the fixing structure. In this way, the assembly difficulty of the capacitive touch pen can be reduced, materials can be saved, and the strain can be guaranteed.
  • the chip assembly is disposed on the flat plate portion 211 , and the chip assembly is connected to the strain gauge 232 and the strain gauge 232 respectively.
  • the electrode assembly 22 is electrically connected, and further preferably, the chip assembly is fixed on the limiting protruding strip 2111, so that the limiting protruding strip 2111 not only functions to limit and protect the second arm 2312, but also To the role of providing installation locations for chip components, one thing is multi-purpose.
  • the first arm 2311 is welded and fixed to the shielding assembly 8
  • the second arm 2312 is welded and fixed to the flat plate portion 211
  • the elastic support frame 27 is welded and fixed to the shielding assembly 8 .
  • the first arm 2311 can also be directly fixed on the pen holder 7 or the pen holder 1, and the specific fixing method can be screwed, glued, clipped, etc.
  • the elastic support frame 27 can also be directly fixed on the pen holder 7 or the pen holder 1.
  • the specific fixing method can be screwed, glued, or clipped;
  • the end of the pen tip shaft 21 away from the electrode assembly 22 is provided with a mounting portion 215 , and the elastic support frame 27 is mounted on the mounting portion 215 .
  • the first arm 2311 is disposed away from the mounting portion 215 , that is, the first arm 2311 is disposed away from the elastic support frame 27 . In this way, a sufficient distance can be left between the first arm 2311 and the elastic support frame 27 .
  • the mounting portion 215 includes a mounting plate portion 2151 connected to the pen tip shaft 21 and a column body 2152 disposed on the mounting plate portion 2151.
  • the existence of the column body 2152 can further increase the size of the first arm
  • the distance between 2311 and the elastic support frame 27, the elastic support frame 27 is fixed on the cylinder 2152 by screws.
  • the pen tip shaft 21 and the mounting portion 215 are integrally formed into an integral structure.
  • the elastic support frame 27 includes a fixed part 271 and a plurality of elastic branch parts 272 arranged on the periphery of the fixed part 271 .
  • the fixed part 271 is connected and fixed with the pen tip shaft 21
  • the branch portion 272 is connected and fixed with the fixing structure, and the fixing portion 271 is provided with a through hole for the screw to pass through.
  • a plurality of the elastic branch portions 272 are evenly distributed along the periphery of the fixing portion 271 .
  • the number of the elastic branch portions 272 is Four, two adjacent elastic branch portions 272 are arranged at an interval of 90°. In other embodiments, the number of the elastic branch portions 272 may also be two, three, five, six, and the like.
  • the elastic branch portion 272 shown in this embodiment is roughly Z-shaped. Specifically, the elastic branch portion 272 includes a first force arm 2721 , an inclined force arm 2722 and a second force arm 2723 that are connected in sequence. One end of the first lever arm 2721 is connected to the fixing portion 271 , and the other end of the first lever arm 2721 is bent and extended to form the inclined lever arm 2722 away from the fixing portion 271 . One end of the first lever arm 2721 is bent outward to form the second lever arm 2723 , and one end of the second lever arm 2723 away from the inclined lever arm 2722 is connected and fixed to the fixing structure.
  • the second force arm 2723 is parallel to the first force arm 2721 .
  • the specific structure of the elastic branch portion 272 may also be other forms, such as arc shape, spiral shape, etc.
  • the elastic branch portion 272 is spiral shape, the number of the elastic branch portion 272 is multiple.
  • the branches 272 form a swirl pattern.
  • the elastic support frame 27 is an integrated structure formed by cutting and bending a piece of metal plate.
  • the elastic support frame 27 may also be other structures, such as springs, rubber parts, and the like.
  • the elastic support frame 27 further includes reinforcing spokes 273 , and two adjacent elastic branches 272 are connected by the reinforcing spokes 273 .
  • the elastic support frame 27 may be in the shape of a spider web.
  • the arrangement of the reinforcing spokes 273 can improve the structural stability of the elastic support frame 27 and increase its own elastic modulus, and can also facilitate the assembly of the capacitive touch pen.
  • the fourth embodiment of the present invention is: a capacitive touch pen, which can be used to touch touch control devices such as mobile phones, tablet computers, and navigators.
  • the capacitive stylus includes a fixing structure
  • the fixing structure includes a pen holder 1, and the pen holder 1 is provided with a pen tip assembly 2, a chip assembly (not shown), a main control board 4, A battery 5 and an antenna assembly 6, the antenna assembly 6, the chip assembly and the battery 5 are respectively electrically connected to the main control board 4, the pen tip assembly 2 is located at the head of the pen holder 1, this embodiment
  • the fixing structure further includes a pen holder 7 and a shielding component 8, the pen holder 7 and the shielding component 8 are respectively arranged in the pen holder 1, and the pen holder 7 is connected to the pen tip component 2, so The shielding assembly 8 covers the pen tip assembly 2 to shield the pen tip assembly 2.
  • the antenna assembly 6, the main control board 4 and the battery 5 are respectively fixed on the pen support 7.
  • the The pen tip assembly 2 is connected and fixed to the pen support 7 through the shielding assembly 8 .
  • the pen holder 7 and/or the shielding assembly 8 may not be provided in the fixing structure.
  • the pen tip assembly 2, the antenna assembly 6, the main The control board 4 and the battery 5 can be directly fixed on the pen holder 1 .
  • the pen holder 7 is a metal injection-molded structural member, so that the design and manufacture of the structure of the pen holder 7 can be facilitated.
  • the main control board 4 is provided with a wireless charging module, the wireless charging module is electrically connected to the main control board 4, and the pen holder 7 has a setting corresponding to the wireless charging module. Window 71.
  • the pen tip assembly 2 includes a pen tip shaft 21, an electrode assembly 22 and a strain sensor 23, the electrode assembly 22 is electrically connected to the chip assembly, and the strain sensor 23 includes an elastic body 231 and a device
  • the strain gauge 232 on the elastic body 231, the elastic body 231 is L-shaped, the elastic body 231 is connected and fixed with the pen tip shaft 21 and the fixing structure respectively, and the pen tip assembly 2 further includes a pen tip shaft 21.
  • the energy-absorbing structure is connected to the fixing structure.
  • the energy-absorbing structure includes an elastic member 91 and a fixing member 92.
  • the fixing member 92 is fixed on the fixing structure, and the elastic members 91 are respectively The fixing member 92 is connected to the nib shaft 21 .
  • the elastic body 231 includes a connected first arm 2311 and a second arm 2312, the first arm 2311 is connected and fixed with the fixing structure, and the second arm 2312 is fixed on the pen tip shaft 21, so
  • the strain gauge 232 is disposed on the first arm 2311 .
  • the nib shaft 21 includes a flat plate portion 211
  • the second arm 2312 is fixed on the flat plate portion 211
  • the flat plate portion 211 is provided with a limiting protruding strip for limiting the second arm 2312 2111, the number of the limiting protruding strips 2111 is two, and the second arm 2312 is located between the two limiting protruding strips 2111.
  • the end of the first arm 2311 away from the end of the second arm 2312 is fixed on the fixing structure. In this way, the assembly difficulty of the capacitive touch pen can be reduced, materials can be saved, and the strain can be guaranteed.
  • the chip assembly is disposed on the flat plate portion 211 , and the chip assembly is connected to the strain gauge 232 and the strain gauge 232 respectively.
  • the electrode assembly 22 is electrically connected, and further preferably, the chip assembly is fixed on the limiting protruding strip 2111, so that the limiting protruding strip 2111 not only functions to limit and protect the second arm 2312, but also To the role of providing installation locations for chip components, one thing is multi-purpose.
  • the first arm 2311 is welded and fixed to the shielding assembly 8
  • the second arm 2312 is welded and fixed to the flat plate portion 211
  • the fixing member 92 is welded and fixed to the shielding assembly 8 .
  • the first arm 2311 can also be directly fixed on the pen holder 7 or the pen holder 1, and the specific fixing method can be screwed, glued, clipped, etc.
  • the fixing member 92 can also be directly fixed on the pen On the bracket 7 or the pen holder 1, the specific fixing method can be screwed, glued, or clipped;
  • the end of the pen tip shaft 21 away from the electrode assembly 22 is provided with a mounting portion 215, the elastic member 91 is mounted on the mounting portion 215, and the first arm 2311 is far away from the mounting portion 215.
  • the mounting portion 215 is disposed, that is, the first arm 2311 is disposed away from the elastic member 91 . In this way, a sufficient distance can be kept between the first arm 2311 and the elastic member 91 .
  • the elastic member 91 is a spring
  • the mounting portion 215 includes a mounting plate portion 2151 connected to the pen tip shaft 21 and a column 2152 disposed on the mounting plate portion 2151. One end is sleeved on the cylinder 2152 .
  • the pen tip shaft 21 and the mounting portion 215 are integrally formed into an integral structure.
  • the elastic member 91 may also be other structures, such as an X-shaped reed, a V-shaped reed, a rubber piece, and the like.
  • the fixing member 92 includes a fixing plate 921 and a limiting structure 922 disposed on the fixing plate 921 , and one end of the spring is matched with the limiting structure 922 .
  • the limiting structure 922 is annular, and at this time, the other end of the spring is sleeved in the limiting structure 922 and pressed against the fixing plate 921 . Therefore, it is not difficult to see that the outer diameter of the cylinder 2152 is smaller than the inner diameter of the spring, and the outer diameter of the spring is smaller than the inner diameter of the limiting structure 922, which can effectively reduce the impact of the pen tip assembly 2 on the capacitive touch.
  • the axial length space occupied in the stylus allows more space inside the capacitive stylus to set other components.
  • the limiting structure 922 is also feasible in the shape of a column.
  • the L-shaped elastic body cooperates with the energy-absorbing structure to form a double-supported elastic buffer structure, which is novel and practical in structure, and can make the capacitive stylus rotate to different angles.
  • the deformation rate of strain gage is small, so that the consistent signal output performance is superior, achieving the same use effect and experience as the U-shaped elastic body; and compared with the single-arm elastic body, the increase of the energy-absorbing structure It can share part of the force of the elastic body, reduce the deformation amount of the elastic body, and improve the service life of the elastic body; in addition, the capacitive stylus has a good linear relationship between the strain under different writing angles and inclination angles, and will be designed in the subsequent design. It has great advantages in chip selection. There are many types of energy-absorbing structures, which greatly enriches the diversity of capacitive stylus structures.

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Abstract

本发明公开了电容触控笔，包括固定结构和设于固定结构内的笔尖组件，固定结构包括笔杆，笔尖组件包括笔尖轴和应变传感器，应变传感器包括弹性体和设于弹性体上的应变计，弹性体连接笔尖轴与固定结构，弹性体呈L字型，还包括设于所述笔尖轴上的吸能结构，所述吸能结构连接所述固定结构。本电容触控笔中，L字型弹性体配合吸能结构组成了双支撑弹性缓冲结构，结构新颖、实用，可令电容触控笔自身旋转到不同角度时，相同负载的情况下，应变计形变变化率小，从而使得信号输出一致性能优越；吸能结构的增加可以分担弹性体的部分受力，减小弹性体的形变量，从而提高弹性体的使用寿命。

Description

电容触控笔 技术领域
本发明涉及触控控制设备技术领域，尤其涉及电容触控笔。
 背景技术
随着电容屏的日益普及，越来越多的平板电脑、手机、导航仪等电子产品开始使用电容屏进行操作控制，尽管电容屏可以用手指触摸，但因为手指的脏污易将显示屏弄脏，而且手指的触控精度也不太好，有些专业人员用手指达不到所需精度，因此，越来越多的消费者追求高品质的电容触控笔来操作触摸屏。
现有的电容触控笔一般包括笔杆和设于笔杆内的笔尖组件、电池、天线、主控板等，其中，笔尖组件包括笔尖轴及分别设于笔尖轴上的应变传感器与电极组件，应变传感器包括弹性体和设于弹性体上的应变计，弹性体通常为双臂支撑结构（如U字型结构）。笔尖受力后传导到应变式传感器，应变式传感器的两臂受力变形，应变计设于其中一个臂上，其变形输出电信号。
U型弹性体能够有效解决不同书写角度，负载与应变计形变之间的关系差异大的问题，为规避友商的专利，申请人提出了一种新型结构的电容触控笔。
 技术问题
本发明所要解决的技术问题是：提供一种结构新颖的电容触控笔。
 技术解决方案
为了解决上述技术问题，本发明采用的技术方案为：电容触控笔，包括固定结构和设于固定结构内的笔尖组件，固定结构包括笔杆，笔尖组件包括笔尖轴和应变传感器，应变传感器包括弹性体和设于弹性体上的应变计，弹性体连接笔尖轴与固定结构，其中，弹性体呈L字型，还包括设于所述笔尖轴上的吸能结构，所述吸能结构连接所述固定结构。
 有益效果
本发明的有益效果在于：本电容触控笔中，L字型弹性体配合吸能结构组成了双支撑弹性缓冲结构，结构新颖、实用，可令电容触控笔自身旋转到不同角度时，相同负载的情况下，应变计形变变化率小，从而使得信号输出一致性能优越，达到与U型弹性体相同的使用效果和体验；而且相比于单独的单臂弹性体，吸能结构的增加可以分担弹性体的部分受力，减小弹性体的形变量，从而提高弹性体的使用寿命；另外，本电容触控笔在不同书写角度和倾角条件下，应变线性关系较好，在后续设计芯片选型时具有较大优势。
 附图说明
图1为本发明的电容触控笔的整体结构的结构示意图；
图2为本发明的电容触控笔的结构示意图（隐藏笔杆后）；
图3为本发明的电容触控笔的结构示意图（隐藏笔支架的部分结构及笔杆后）；
图4为本发明实施例一的电容触控笔中的笔尖组件的结构示意图；
图5为本发明实施例一的电容触控笔中的笔尖组件的爆炸图；
图6为本发明实施例一的电容触控笔中的应变传感器的结构示意图；
图7为本发明实施例一的电容触控笔中的轴套组件的剖视图；
图8为现有技术中的电容触控笔的状态图（笔杆倾斜45°、自身旋转0°时）；
图9为现有技术中的电容触控笔的状态图（笔杆倾斜45°、自身旋转45°时）；
图10为现有技术中的电容触控笔的状态图（笔杆倾斜45°、自身旋转90°时）；
图11为现有技术中的电容触控笔的状态图（笔杆倾斜45°、自身旋转135°时）；
图12为现有技术中的电容触控笔的状态图（笔杆倾斜45°、自身旋转180°时）；
图13为本发明实施例一的电容触控笔的状态图（笔杆倾斜45°、自身旋转0°时）；
图14为本发明实施例一的电容触控笔的状态图（笔杆倾斜45°、自身旋转45°时）；
图15为本发明实施例一的电容触控笔的状态图（笔杆倾斜45°、自身旋转90°时）；
图16为本发明实施例一的电容触控笔的状态图（笔杆倾斜45°、自身旋转135°时）；
图17为本发明实施例一的电容触控笔的状态图（笔杆倾斜45°、自身旋转180°时）；
图18为本发明实施例二的电容触控笔中的笔尖组件的结构示意图；
图19为本发明实施例二的电容触控笔中的轴套组件的剖视图；
图20为本发明实施例三的电容触控笔中的笔尖组件的结构示意图；
图21为本发明实施例三的电容触控笔中的弹性支撑架的俯视图；
图22为本发明实施例四的电容触控笔中的笔尖组件的爆炸图。
标号说明：
1、笔杆；
2、笔尖组件；21、笔尖轴；211、平板部；2111、限位凸条；212、螺纹段；213、抵触台阶；214、安装柱；215、安装部；2151、安装板部；2152、柱体；22、电极组件；23、应变传感器；231、弹性体；2311、第一臂；2312、第二臂；232、应变计；24、轴套组件；241、内轴套；242、外轴套；2421、环状部；2422、延伸部；243、内弧面；244、外弧面；245、倒角结构；25、连接压件；26、笔尖锁止件；27、弹性支撑架；271、固定部；272、弹性分支部；2721、第一力臂；2722、倾斜力臂；2723、第二力臂；273、加强辐条；
3、芯片组件；
4、主控板；41、无线充电模组；
5、电池；
6、天线组件；
7、笔支架；71、开窗；
8、屏蔽组件；
91、弹性件；
92、固定件；921、固定板；922、限位结构。
 本发明的实施方式
为详细说明本发明的技术内容、所实现目的及效果，以下结合实施方式并配合附图予以说明。
请参照图1至图22，电容触控笔，包括固定结构和设于固定结构内的笔尖组件，固定结构包括笔杆，笔尖组件包括笔尖轴和应变传感器，应变传感器包括弹性体和设于弹性体上的应变计，弹性体连接笔尖轴与固定结构，其中，弹性体呈L字型，还包括设于所述笔尖轴上的吸能结构，所述吸能结构连接所述固定结构。
从上述描述可知，本发明的有益效果在于：本电容触控笔中，L字型弹性体配合吸能结构组成了双支撑弹性缓冲结构，结构新颖、实用，可令电容触控笔自身旋转到不同角度时，相同负载的情况下，应变计形变变化率小，从而使得信号输出一致性能优越，达到与U型弹性体相同的使用效果和体验；而且相比于单独的单臂弹性体，吸能结构的增加可以分担弹性体的部分受力，减小弹性体的形变量，从而提高弹性体的使用寿命；另外，本电容触控笔在不同书写角度和倾角条件下，应变线性关系较好，在后续设计芯片选型时具有较大优势。
在一种具体的实施例中，弹性体包括相连的第一臂和第二臂，所述第一臂与所述固定结构连接固定，所述第二臂固定在所述笔尖轴上，所述应变计设于所述第一臂上。
由上述描述可知，应变传感器结构简单，加工制造容易，生产成本低廉。
在一种具体的实施例中，所述笔尖轴包括平板部，所述第二臂固定在所述平板部上，所述平板部上设有用于限位所述第二臂的限位凸条。
由上述描述可知，限位凸条的设置能够起到限位第二臂的作用，方便弹性体与笔尖轴的组装工作，提高产品一致性；另外，限位凸条还能够起到保护第二臂的作用，防止第二臂在组装的过程中意外刮伤。
在一种具体的实施例中，所述笔尖组件还包括与所述应变传感器电性连接的芯片组件，所述芯片组件设于所述限位凸条上。
由上述描述可知，限位凸条不仅起到限位、保护所述第二臂的作用，还起到为芯片组件提供安装位置的作用，实现了一物多用，使得笔尖组件结构更为紧凑，为电容触控笔的其他部件留出足够的安装空间。
在一种具体的实施例中，所述吸能结构远离所述应变计设置。
由上述描述可知，吸能结构远离应变计设置能够更好地分担弹性体的受力，减小弹性体的形变量，从而使得弹性体更加耐用。
在一种具体的实施例中，所述固定结构还包括设于所述笔杆内的笔支架和/或设于所述笔杆内的屏蔽组件。
由上述描述可知，吸能结构具体的安装位置多种多样，可按需设置，利于丰富电容触控笔的多样性。
在一种具体的实施例中，所述吸能结构包括轴套组件，所述轴套组件包括相配合的内轴套与外轴套，所述内轴套套设在所述笔尖轴上，外轴套固定在固定结构上。
由上述描述可知，轴套组件结构简单、实用，工作稳定性好。
在一种具体的实施例中，所述轴套组件中所述外轴套的数量为两个，所述外轴套包括环状部，所述环状部具有内弧面，所述内轴套的外周壁设有与所述内弧面相配合的外弧面，两个所述外轴套的环状部相互靠近形成限位所述内轴套的限位空腔。
由上述描述可知，轴套组件结构稳定，内轴套不会意外脱离外轴套。
在一种具体的实施例中，所述轴套组件中的两个所述外轴套相互连接固定。
由上述描述可知，轴套组件是整体式结构，可方便笔尖组件的组装生产。
在一种具体的实施例中，所述外轴套还包括延伸部，所述延伸部位于所述环状部的外侧并与所述环状部相连，所述外轴套通过所述延伸部固定在所述固定结构上。
由上述描述可知，延伸部的存在不仅能够方便外轴套的成型过程，而且还能够方便外轴套与固定结构的连接固定工作。
在一种具体的实施例中，所述内轴套套设在所述笔尖轴的中部区域。
在一种具体的实施例中，所述笔尖轴的尾端设有安装柱，所述内轴套套设在所述安装柱上。
由上述描述可知，轴套组件在笔尖轴上的安装位置可按需设置，利于丰富电容触控笔结构的多样性。另外，当内轴套套设在笔尖轴的中部区域时，还能够缩减笔尖组件在长度方向上的占用空间，使得电容触控笔内部结构更为紧凑。当笔尖轴的尾端设置安装柱时，可方便轴套组件在笔尖轴上的安装工作。
在一种具体的实施例中，所述吸能结构包括弹性支撑架。
由上述描述可知，作为吸能结构的弹性支撑架不仅加工制造容易，而且吸能效果好。
在一种具体的实施例中，所述弹性支撑架包括固定部和设于所述固定部上的多个弹性分支部，所述固定部与所述笔尖轴连接固定，所述弹性分支部与所述固定结构连接固定。
由上述描述可知，弹性支撑架结构简单、稳定，能够提供充足的缓冲力。
在一种具体的实施例中，数量为多个的所述弹性分支部沿所述固定部的周缘均布设置。
由上述描述可知，数量为多个的弹性分支部均布设置能够让笔尖轴受到更均衡的缓冲力，利于提高应变传感器监测的准确度。
在一种具体的实施例中，所述弹性支撑架还包括加强辐条，相邻的两个所述弹性分支部通过所述加强辐条相连。
由上述描述可知，加强辐条的设置能够提高弹性支撑架自身结构的强度，能够有效地防止加强辐条在转运的过程中发生不可逆变形；同时，加强辐条的设置还能够提高弹性支撑架的弹性模量，从而提高弹性支撑架的缓冲效果，进一步分担应变传感器所受应力；另外，加强辐条的设置还能够为弹性分支部与固定结构连接工作提供方便，避免弹性分支部在与固定结构连接时，弹性分支部随意晃动。
在一种具体的实施例中，所述吸能结构包括包括弹性件和固定件，固定件固定在固定结构上，弹性件分别连接固定件与笔尖轴。
由上述描述可知，吸能结构结构简单，加工制造容易，工作稳定性好。
在一种具体的实施例中，所述固定件包括固定板和设于所述固定板上的限位结构。
由上述描述可知，限位结构的设置能够对弹性件起到限位作用，方便弹性件的组装工作。
在一种具体的实施例中，所述弹性件为弹簧，所述弹簧的一端与所述限位结构相配合。
由上述描述可知，限位结构能够防止弹性件跑偏，利于保证电容触控笔的结构稳定性。
在一种具体的实施例中，所述限位结构呈环状或柱状。
由上述描述可知，限位结构结构简单，成型容易。
实施例一
请参照图1至图17，本发明的实施例一为：一种电容触控笔，可用于触控操作手机、平板电脑、导航仪等触控设备。
请结合图1至图3，所述电容触控笔包括固定结构，所述固定结构包括笔杆1，所述笔杆1内设有笔尖组件2、芯片组件3、主控板4、电池5及天线组件6，所述天线组件6、所述芯片组件3和所述电池5分别与所述主控板4电性连接，所述笔尖组件2位于所述笔杆1的头部，本实施例中，所述固定结构还包括笔支架7与屏蔽组件8，所述笔支架7与所述屏蔽组件8分别设于所述笔杆1内，所述笔支架7连接所述笔尖组件2，所述屏蔽组件8罩设所述笔尖组件2以对笔尖组件2进行屏蔽，所述天线组件6、所述主控板4和所述电池5分别固定在所述笔支架7上，具体的，所述笔尖组件2通过所述屏蔽组件8与所述笔支架7连接固定。需要说明的是，在其他一些实施例中，所述固定结构也可以不设置所述笔支架7和/或屏蔽组件8，此时，所述笔尖组件2、所述天线组件6、所述主控板4和所述电池5直接固定在笔杆1上即可。可选的，所述笔支架7为金属注射成型的结构件，如此，可方便笔支架7结构的设计、制造。
请结合图2和图3，为方便充电，所述主控板4上设有无线充电模组41，所述无线充电模组41与所述主控板4电连接，所述笔支架7上具有对应于所述无线充电模组41设置的开窗71。
请结合图4至图6，具体的，所述笔尖组件2包括笔尖轴21、电极组件22和应变传感器23，所述电极组件22与所述芯片组件3电性连接，应变传感器23包括弹性体231和设于弹性体231的应变计232，弹性体231呈L字型，所述弹性体231分别与所述笔尖轴21及所述固定结构连接固定，本实施例中，所述笔尖组件2还包括套设在笔尖轴21的中部区域的吸能结构，吸能结构连接所述固定结构。
更具体的，弹性体231包括相连的第一臂2311和第二臂2312，所述第一臂2311与所述固定结构连接固定，所述第二臂2312固定在所述笔尖轴21上，所述应变计232设于所述第一臂2311上。优选的，所述笔尖轴21包括平板部211，所述第二臂2312固定在所述平板部211上，所述平板部211上设有用于限位所述第二臂2312的限位凸条2111，所述限位凸条2111的数量为两个，所述第二臂2312位于两个所述限位凸条2111之间。作为一种优选实施方式，所述第一臂2311远离第二臂2312的一端的端头固定在所述固定结构上，如此，可降低电容触控笔的组装难度并节省物料，且能够保证应变计232的反应灵敏度。
如图4所示，为进一步保证应变传感器23的灵敏度，优选所述第一臂2311靠近所述笔尖轴21远离所述电极组件22的一端设置，也就是说，第一臂2311与吸能结构之间保留有足够的间距。
详细的，所述第一臂2311与所述屏蔽组件8焊接固定，所述第二臂2312焊接固定在所述平板部211上。在其他实施例中，所述第一臂2311还可以直接固定在笔支架7或笔杆1上，具体的固定方式可选螺接、胶接、卡接等；第二臂2312也可以采用螺接、胶接、卡接等固定方式与笔尖轴21连接固定。
请结合图4和图5，为让电容触控笔内部结构更为紧凑及缩短电极组件22与芯片组件3的导通距离，优选所述芯片组件3设于所述平板部211上，所述芯片组件3分别与所述应变计232及电极组件22电性连接，进一步优选，所述芯片组件3固定在所述限位凸条2111上，如此，限位凸条2111不仅起到限位、保护所述第二臂2312的作用，还起到为芯片组件3提供安装位置的作用，实现了一物多用。
请结合图5和图7，本实施例中，所述吸能结构包括轴套组件24，所述轴套组件24包括相配合的内轴套241与外轴套242，所述内轴套241套设在所述笔尖轴21的中部区域，外轴套242固定在固定结构上。详细的，所述轴套组件24中所述外轴套242的数量为两个，所述外轴套242包括环状部2421，所述环状部2421具有内弧面243，所述内轴套241的外周壁设有与所述内弧面243相配合的外弧面244，两个所述外轴套242的环状部2421相互靠近形成限位所述内轴套241的限位空腔，所述限位空腔的两个开口的直径小于所述外弧面244的最大直径，如此可以避免内轴套241脱离所述限位空腔，利于保证轴套组件24的结构稳定性。
优选的，所述轴套组件24中的两个所述外轴套242相互连接固定，本实施例中，所述外轴套242还包括延伸部2422，所述延伸部2422位于所述环状部2421的外侧并与所述环状部2421相连，所述外轴套242通过所述延伸部2422固定在所述固定结构上。具体的，所述轴套组件24中的两个延伸部2422焊接固定，当然，两个所述外轴套242采用其他的固定方式相连也是可行的，例如螺接、卡接、粘接等。
请结合图4和图5，所述笔尖轴21上还设有螺纹段212和用于抵压电极组件22的连接压件25，所述螺纹段212上螺纹连接有笔尖锁止件26，所述笔尖锁止件26抵压所述连接压件25以锁止所述电极组件22。所述笔尖锁止件26对连接压件25形成锁定时，连接压件25的至少一部分区域位于所述笔尖锁止件26内，从而形成抵压。
内轴套241与笔尖轴21过盈配合，为保证笔尖组件2的结构稳定性，所述笔尖轴21上设有抵触台阶213，所述内轴套241的两端分别与所述抵触台阶213及所述笔尖锁止件26抵持，从而使得内轴套241与笔尖轴21形成稳定地连接固定。由此可见，本实施例中，所述笔尖锁止件26既起到锁止连接压板的作用，又起到了锁止内轴套241的作用，实现了一物多用。当然，所述内轴套241与笔尖轴21还可以采用粘接、卡接等方式进行连接固定或加固连接。
为保证外轴套242的结构稳定性以及方便其加工制造，所述环状部2421与所述延伸部2422为由一块金属板材经拉伸成型的一体式结构。
仿真测试
为进一步说明本申请技术方案的优势，申请人分别对现有技术中的电容触控笔（弹性体呈U字型）与本实施例中的电容触控笔进行了仿真模拟测试。
表1 具有U字型弹性体的电容触控笔仿真测试结果表
  笔杆倾斜角度 受力大小 笔杆自身旋转角度 应变计处形变 应变计处应力
1 45° 400N 0° 0.015573mm 81.51MPa
2 45° 400N 45° 0.015861mm 111.45MPa
3 45° 400N 90° 0.0161893mm 152MPa
4 45° 400N 135° 0.016276mm 147.48MPa
5 45° 400N 180° 0.016068mm 119.31MPa
由表1结果计算可知，具有U字型弹性体的电容触控笔中的应力传感器的形变变化率σ：|Max-Min|/Max=4.319%。表1中电容触控笔的状态图可参考图8至图12。
表2 本实施例的电容触控笔仿真测试结果表
  笔杆倾斜角度 受力大小 笔杆自身旋转角度 应变计处形变 应变计处应力
1 45° 400N 0° 0.031945mm 205.48MPa
2 45° 400N 45° 0.031905mm 206.14MPa
3 45° 400N 90° 0.031765mm 206.37MPa
4 45° 400N 135° 0.031604mm 205.41MPa
5 45° 400N 180° 0.031518mm 204.42MPa
由表2结果计算可知，本实施例的电容触控笔中的应力传感器的形变变化率σ：|Max-Min|/Max=1.3367%。表2中电容触控笔的状态图可参考图13至图17。
由此可见，本实施例的电容触控笔中的应力传感器的形变变化率σ要远小于现有技术的电容触控笔中的应力传感器的形变变化率，这证明本实施例的电容触控笔相比于现有技术的电容触控笔信号输出一致性能更为优越。另外，本实施例的电容触控笔中的应力传感器所受应力普遍较现有技术的电容触控笔中的应力传感器所受应力大，因此，本实施例的电容触控笔还具有信号输出清晰的优势。
实施例二
请参照图1至图3及图18和图19，本发明的实施例二为：一种电容触控笔，可用于触控操作手机、平板电脑、导航仪等触控设备。
请结合图1至图3，所述电容触控笔包括固定结构，所述固定结构包括笔杆1，所述笔杆1内设有笔尖组件2、芯片组件（图未示）、主控板4、电池5及天线组件6，所述天线组件6、所述芯片组件和所述电池5分别与所述主控板4电性连接，所述笔尖组件2位于所述笔杆1的头部，本实施例中，所述固定结构还包括笔支架7与屏蔽组件8，所述笔支架7与所述屏蔽组件8分别设于所述笔杆1内，所述笔支架7连接所述笔尖组件2，所述屏蔽组件8罩设所述笔尖组件2以对笔尖组件2进行屏蔽，所述天线组件6、所述主控板4和所述电池5分别固定在所述笔支架7上，具体的，所述笔尖组件2通过所述屏蔽组件8与所述笔支架7连接固定。需要说明的是，在其他一些实施例中，所述固定结构也可以不设置所述笔支架7和/或屏蔽组件8，此时，所述笔尖组件2、所述天线组件6、所述主控板4和所述电池5直接固定在笔杆1上即可。可选的，所述笔支架7为金属注射成型的结构件，如此，可方便笔支架7结构的设计、制造。
为方便充电，所述主控板4上设有无线充电模组41，所述无线充电模组41与所述主控板4电连接，所述笔支架7上具有对应于所述无线充电模组41设置的开窗71。
请结合图18，具体的，所述笔尖组件2包括笔尖轴21、电极组件22和应变传感器23，所述电极组件22与所述芯片组件电性连接，应变传感器23包括弹性体231和设于弹性体231上的应变计232，弹性体231呈L字型，所述弹性体231分别与所述笔尖轴21及所述固定结构连接固定，还包括设于笔尖轴21上的安装柱214及设于安装柱214上的吸能结构，吸能结构连接所述固定结构。
更具体的，弹性体231包括相连的第一臂2311和第二臂2312，所述第一臂2311与所述固定结构连接固定，所述第二臂2312固定在所述笔尖轴21上，所述应变计232设于所述第一臂2311上。优选的，所述笔尖轴21包括平板部211，所述第二臂2312固定在所述平板部211上，所述平板部211上设有用于限位所述第二臂2312的限位凸条2111，所述限位凸条2111的数量为两个，所述第二臂2312位于两个所述限位凸条2111之间。作为一种优选实施方式，所述第一臂2311远离第二臂2312的一端的端头固定在所述固定结构上，如此，可降低电容触控笔的组装难度并节省物料，且能够保证应变计232的反应灵敏度。
为进一步保证应变传感器23的灵敏度，优选所述安装柱214设于所述笔尖轴21远离所述电极组件22的一端，所述第一臂2311远离所述安装柱214设置，也就是说，第一臂2311与吸能结构之间保留有足够的间距。
详细的，所述第一臂2311与所述屏蔽组件8焊接固定，所述第二臂2312焊接固定在所述平板部211上，所述吸能结构焊接固定在所述屏蔽组件8上。在其他实施例中，所述第一臂2311还可以直接固定在笔支架7或笔杆1上，具体的固定方式可选螺接、胶接、卡接等；吸能结构还可以直接固定在笔支架7或笔杆1上，具体的固定方式可选螺接、胶接、卡接等；第二臂2312也可以采用螺接、胶接、卡接等固定方式与笔尖轴21连接固定。
为让电容触控笔内部结构更为紧凑及缩短电极组件22与芯片组件的导通距离，优选所述芯片组件设于所述平板部211上，所述芯片组件分别与所述应变计232及电极组件22电性连接，进一步优选，所述芯片组件固定在所述限位凸条2111上，如此，限位凸条2111不仅起到限位、保护所述第二臂2312的作用，还起到为芯片组件提供安装位置的作用，实现了一物多用。
请结合图18和图19，本实施例中，所述吸能结构包括轴套组件24，所述轴套组件24包括相配合的内轴套241与外轴套242，所述内轴套241套设在所述安装柱214上，外轴套242固定在固定结构上。详细的，所述轴套组件24中所述外轴套242的数量为两个，所述外轴套242包括环状部2421，所述环状部2421具有内弧面243，所述内轴套241的外周壁设有与所述内弧面243相配合的外弧面244，两个所述外轴套242的环状部2421相互靠近形成限位所述内轴套241的限位空腔，所述限位空腔的两个开口的直径小于所述外弧面244的最大直径，如此可以避免内轴套241脱离所述限位空腔，利于保证轴套组件24的结构稳定性。
如图19所示，优选的，所述轴套组件24中的两个所述外轴套242相互连接固定，本实施例中，所述外轴套242还包括延伸部2422，所述延伸部2422位于所述环状部2421的外侧并与所述环状部2421相连，所述外轴套242通过所述延伸部2422固定在所述固定结构上。具体的，所述轴套组件24中的两个延伸部2422焊接固定，所述内轴套241焊接固定在所述安装柱214上，当然，两个所述外轴套242采用其他的固定方式相连也是可行的，例如螺接、卡接、粘接等；同理，所述内轴套241采用其他的固定方式固定在安装柱214上也是可行的，例如卡接、过盈配合、粘接、螺接等。
作为一种优选的实施方式，所述内轴套241上设有与所述安装柱214相配合的安装孔，所述安装孔的两端分别设有倒角结构245，在将内轴套241安装到安装柱214上时，该倒角结构245能够起到导向作用，从而方便内轴套241的安装；在焊接内轴套241与安装柱214时，该倒角结构245能够起到容锡的作用，从而提高内轴套241与安装柱214连接的稳定性。由此可见，该倒角结构245在本实施例中也实现了一物多用。
为保证外轴套242的结构稳定性以及方便其加工制造，所述环状部2421与所述延伸部2422为由一块金属板材经拉伸成型的一体式结构。
实施例三
请参照图1至图3及图20和图21，本实用新型的实施例三为：一种电容触控笔，可用于触控操作手机、平板电脑、导航仪等触控设备。
请结合图1至图3，所述电容触控笔包括固定结构，所述固定结构包括笔杆1，所述笔杆1内设有笔尖组件2、芯片组件（图未示）、主控板4、电池5及天线组件6，所述天线组件6、所述芯片组件和所述电池5分别与所述主控板4电性连接，所述笔尖组件2位于所述笔杆1的头部，本实施例中，所述固定结构还包括笔支架7与屏蔽组件8，所述笔支架7与所述屏蔽组件8分别设于所述笔杆1内，所述笔支架7连接所述笔尖组件2，所述屏蔽组件8罩设所述笔尖组件2以对笔尖组件2进行屏蔽，所述天线组件6、所述主控板4和所述电池5分别固定在所述笔支架7上，具体的，所述笔尖组件2通过所述屏蔽组件8与所述笔支架7连接固定。需要说明的是，在其他一些实施例中，所述固定结构也可以不设置所述笔支架7和/或屏蔽组件8，此时，所述笔尖组件2、所述天线组件6、所述主控板4和所述电池5直接固定在笔杆1上即可。可选的，所述笔支架7为金属注射成型的结构件，如此，可方便笔支架7结构的设计、制造。
为方便充电，所述主控板4上设有无线充电模组41，所述无线充电模组41与所述主控板4电连接，所述笔支架7上具有对应于所述无线充电模组41设置的开窗71。
如图20所示，具体的，所述笔尖组件2包括笔尖轴21、电极组件22和应变传感器23，所述电极组件22与所述芯片组件电性连接，应变传感器23包括弹性体231和设于弹性体231上的应变计232，弹性体231呈L字型，所述弹性体231分别与所述笔尖轴21及所述固定结构连接固定，还包括设于笔尖轴21上的的吸能结构，所述吸能结构连接所述固定结构，本实施例中，所述吸能结构包括弹性支撑架27。
更具体的，弹性体231包括相连的第一臂2311和第二臂2312，所述第一臂2311与所述固定结构连接固定，所述第二臂2312固定在所述笔尖轴21上，所述应变计232设于所述第一臂2311上。优选的，所述笔尖轴21包括平板部211，所述第二臂2312固定在所述平板部211上，所述平板部211上设有用于限位所述第二臂2312的限位凸条2111，所述限位凸条2111的数量为两个，所述第二臂2312位于两个所述限位凸条2111之间。作为一种优选实施方式，所述第一臂2311远离第二臂2312的一端的端头固定在所述固定结构上，如此，可降低电容触控笔的组装难度并节省物料，且能够保证应变计232的反应灵敏度。
为让电容触控笔内部结构更为紧凑及缩短电极组件22与芯片组件的导通距离，优选所述芯片组件设于所述平板部211上，所述芯片组件分别与所述应变计232及电极组件22电性连接，进一步优选，所述芯片组件固定在所述限位凸条2111上，如此，限位凸条2111不仅起到限位、保护所述第二臂2312的作用，还起到为芯片组件提供安装位置的作用，实现了一物多用。
详细的，所述第一臂2311与所述屏蔽组件8焊接固定，所述第二臂2312焊接固定在所述平板部211上，所述弹性支撑架27焊接固定在所述屏蔽组件8上。在其他实施例中，所述第一臂2311还可以直接固定在笔支架7或笔杆1上，具体的固定方式可选螺接、胶接、卡接等；弹性支撑架27还可以直接固定在笔支架7或笔杆1上，具体的固定方式可选螺接、胶接、卡接等；第二臂2312也可以采用螺接、胶接、卡接等固定方式与笔尖轴21连接固定。
如图20所示，为进一步保证应变传感器23的灵敏度，所述笔尖轴21远离所述电极组件22的一端设有安装部215，所述弹性支撑架27安装于所述安装部215上，所述第一臂2311远离所述安装部215设置，也就是说，所述第一臂2311远离所述弹性支撑架27设置。如此，可让第一臂2311与弹性支撑架27之间保留有足够的间距。本实施例中，所述安装部215包括与所述笔尖轴21相连的安装板部2151以及设于所述安装板部2151上的柱体2152，柱体2152的存在能够进一步增大第一臂2311与弹性支撑架27之间的间距，所述弹性支撑架27通过螺钉固定在所述柱体2152上。作为一种优选的实施方式，所述笔尖轴21与所述安装部215为一体成型的一体式结构。
本实施例中，所述弹性支撑架27包括固定部271和设于所述固定部271周缘上的多个弹性分支部272，所述固定部271与所述笔尖轴21连接固定，所述弹性分支部272与所述固定结构连接固定，所述固定部271上设有供所述螺钉穿过的通孔。
为确保弹性支撑架27能够提供均衡的缓冲力，数量为多个的所述弹性分支部272沿所述固定部271的周缘均布设置，本实施例中，所述弹性分支部272的数量为四个，相邻的两个所述弹性分支部272之间间隔90°设置。在其他实施例中，所述弹性分支部272的数量还可以是两个、三个、五个、六个等。
本实施例中所示出的弹性分支部272大致呈Z字型，具体的，所述弹性分支部272包括依次相连的第一力臂2721、倾斜力臂2722和第二力臂2723，所述第一力臂2721的一端连接所述固定部271，所述第一力臂2721的另一端朝远离所述固定部271的斜上方弯折延伸形成所述倾斜力臂2722，所述倾斜臂远离所述第一力臂2721的一端朝外侧弯折延伸形成所述第二力臂2723，所述第二力臂2723远离所述倾斜力臂2722的一端与所述固定结构连接固定。可选的，所述第二力臂2723与所述第一力臂2721平行。在其他实施例中，所述弹性分支部272的具体构造还可以是其他形态的，例如弧线形、螺旋线形等，当弹性分支部272呈螺旋线形时，数量为多个的所述弹性分支部272形成漩涡状图案。
作为一种优选的实施方式，所述弹性支撑架27为由一块金属板材经裁切、弯折成型的一体式结构。
当然，在其他实施例中，所述弹性支撑架27还可以是其他结构，例如，弹簧、橡胶件等。
如图21所示，作为进一步优化，可选的，所述弹性支撑架27还包括加强辐条273，相邻的两个所述弹性分支部272通过所述加强辐条273相连，此时，俯视所述弹性支撑架27时，所述弹性支撑架27可以是呈蛛网状的。加强辐条273的设置能够提高弹性支撑架27自身结构的稳定性并增大其自身的弹性模量，且还能够方便电容触控笔的组装工作。
实施例四
请参照图1至图3和图22，本实用新型的实施例四为：电容触控笔，可用于触控操作手机、平板电脑、导航仪等触控设备。
请结合图1至图3，所述电容触控笔包括固定结构，所述固定结构包括笔杆1，所述笔杆1内设有笔尖组件2、芯片组件（图未示）、主控板4、电池5及天线组件6，所述天线组件6、所述芯片组件和所述电池5分别与所述主控板4电性连接，所述笔尖组件2位于所述笔杆1的头部，本实施例中，所述固定结构还包括笔支架7与屏蔽组件8，所述笔支架7与所述屏蔽组件8分别设于所述笔杆1内，所述笔支架7连接所述笔尖组件2，所述屏蔽组件8罩设所述笔尖组件2以对笔尖组件2进行屏蔽，所述天线组件6、所述主控板4和所述电池5分别固定在所述笔支架7上，具体的，所述笔尖组件2通过所述屏蔽组件8与所述笔支架7连接固定。需要说明的是，在其他一些实施例中，所述固定结构也可以不设置所述笔支架7和/或屏蔽组件8，此时，所述笔尖组件2、所述天线组件6、所述主控板4和所述电池5直接固定在笔杆1上即可。可选的，所述笔支架7为金属注射成型的结构件，如此，可方便笔支架7结构的设计、制造。
为方便充电，所述主控板4上设有无线充电模组，所述无线充电模组与所述主控板4电连接，所述笔支架7上具有对应于所述无线充电模组设置的开窗71。
如图22所示，具体的，所述笔尖组件2包括笔尖轴21、电极组件22和应变传感器23，所述电极组件22与所述芯片组件电性连接，应变传感器23包括弹性体231和设于弹性体231上的应变计232，弹性体231呈L字型，所述弹性体231分别与所述笔尖轴21及所述固定结构连接固定，所述笔尖组件2还包括设于笔尖轴21上的的吸能结构，所述吸能结构连接所述固定结构，本实施例中，所述吸能结构包括弹性件91和固定件92，固定件92固定在固定结构上，弹性件91分别连接固定件92与笔尖轴21。
更具体的，弹性体231包括相连的第一臂2311和第二臂2312，所述第一臂2311与所述固定结构连接固定，所述第二臂2312固定在所述笔尖轴21上，所述应变计232设于所述第一臂2311上。优选的，所述笔尖轴21包括平板部211，所述第二臂2312固定在所述平板部211上，所述平板部211上设有用于限位所述第二臂2312的限位凸条2111，所述限位凸条2111的数量为两个，所述第二臂2312位于两个所述限位凸条2111之间。作为一种优选实施方式，所述第一臂2311远离第二臂2312的一端的端头固定在所述固定结构上，如此，可降低电容触控笔的组装难度并节省物料，且能够保证应变计232的反应灵敏度。
为让电容触控笔内部结构更为紧凑及缩短电极组件22与芯片组件的导通距离，优选所述芯片组件设于所述平板部211上，所述芯片组件分别与所述应变计232及电极组件22电性连接，进一步优选，所述芯片组件固定在所述限位凸条2111上，如此，限位凸条2111不仅起到限位、保护所述第二臂2312的作用，还起到为芯片组件提供安装位置的作用，实现了一物多用。
详细的，所述第一臂2311与所述屏蔽组件8焊接固定，所述第二臂2312焊接固定在所述平板部211上，所述固定件92焊接固定在所述屏蔽组件8上。在其他实施例中，所述第一臂2311还可以直接固定在笔支架7或笔杆1上，具体的固定方式可选螺接、胶接、卡接等；固定件92还可以直接固定在笔支架7或笔杆1上，具体的固定方式可选螺接、胶接、卡接等；第二臂2312也可以采用螺接、胶接、卡接等固定方式与笔尖轴21连接固定。
为进一步保证应变传感器23的灵敏度，所述笔尖轴21远离所述电极组件22的一端设有安装部215，所述弹性件91安装于所述安装部215上，所述第一臂2311远离所述安装部215设置，也就是说，所述第一臂2311远离所述弹性件91设置。如此，可让第一臂2311与弹性件91之间保留有足够的间距。
本实施例中，所述弹性件91为弹簧，所述安装部215包括与所述笔尖轴21相连的安装板部2151以及设于所述安装板部2151上的柱体2152，所述弹簧的一端套设在所述柱体2152上。作为一种优选的实施方式，所述笔尖轴21与所述安装部215为一体成型的一体式结构。在其他实施例中，所述弹性件91还可以是其他结构，例如X字型簧片、V字型簧片、橡胶件等。
所述固定件92包括固定板921和设于所述固定板921上的限位结构922，所述弹簧的一端与所述限位结构922相配合。本实施例中，所述限位结构922呈环状，此时，所述弹簧的另一端套设于所述限位结构922内并抵压所述固定板921。由此，不难看出，所述柱体2152的外径小于所述弹簧的内径，所述弹簧的外径小于所述限位结构922的内径，这样能够有效地减小笔尖组件2在电容触控笔内所占用的轴向长度空间，使得电容触控笔内部有更多空间能够设置其他元器件。当然，在其他实施例中，所述限位结构922呈柱状也是可行的。
综上所述，本发明提供的电容触控笔中，L字型弹性体配合吸能结构组成了双支撑弹性缓冲结构，结构新颖、实用，可令电容触控笔自身旋转到不同角度时，相同负载的情况下，应变计形变变化率小，从而使得信号输出一致性能优越，达到与U型弹性体相同的使用效果和体验；而且相比于单独的单臂弹性体，吸能结构的增加可以分担弹性体的部分受力，减小弹性体的形变量，从而提高弹性体的使用寿命；另外，本电容触控笔在不同书写角度和倾角条件下，应变线性关系较好，在后续设计芯片选型时具有较大优势。吸能结构种类繁多，大大丰富了电容触控笔结构的多样性。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等同变换，或直接或间接运用在相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 电容触控笔，包括固定结构和设于固定结构内的笔尖组件，固定结构包括笔杆，笔尖组件包括笔尖轴和应变传感器，应变传感器包括弹性体和设于弹性体上的应变计，弹性体连接笔尖轴与固定结构，其中，弹性体呈L字型，还包括设于所述笔尖轴上的吸能结构，所述吸能结构连接所述固定结构。
  2. 根据权利要求1所述的电容触控笔，其中，弹性体包括相连的第一臂和第二臂，所述第一臂与所述固定结构连接固定，所述第二臂固定在所述笔尖轴上，所述应变计设于所述第一臂上。
  3. 根据权利要求2所述的电容触控笔，其中，所述笔尖轴包括平板部，所述第二臂固定在所述平板部上，所述平板部上设有用于限位所述第二臂的限位凸条。
  4. 根据权利要求3所述的电容触控笔，其中，所述笔尖组件还包括与所述应变传感器电性连接的芯片组件，所述芯片组件设于所述限位凸条上。
  5. 根据权利要求1所述的电容触控笔，其中，所述吸能结构远离所述应变计设置。
  6. 根据权利要求1所述的电容触控笔，其中，所述固定结构还包括设于所述笔杆内的笔支架和/或设于所述笔杆内的屏蔽组件。
  7. 根据权利要求1所述的电容触控笔，其中，所述吸能结构包括轴套组件，所述轴套组件包括相配合的内轴套与外轴套，所述内轴套套设在所述笔尖轴上，外轴套固定在固定结构上。
  8. 根据权利要求7所述的电容触控笔，其中，所述轴套组件中所述外轴套的数量为两个，所述外轴套包括环状部，所述环状部具有内弧面，所述内轴套的外周壁设有与所述内弧面相配合的外弧面，两个所述外轴套的环状部相互靠近形成限位所述内轴套的限位空腔。
  9. 根据权利要求8所述的电容触控笔，其中，所述轴套组件中的两个所述外轴套相互连接固定。
  10. 根据权利要求8所述的电容触控笔，其中，所述外轴套还包括延伸部，所述延伸部位于所述环状部的外侧并与所述环状部相连，所述外轴套通过所述延伸部固定在所述固定结构上。
  11. 根据权利要求7所述的电容触控笔，其中，所述内轴套套设在所述笔尖轴的中部区域。
  12. 根据权利要求7所述的电容触控笔，其中，所述笔尖轴的尾端设有安装柱，所述内轴套套设在所述安装柱上。
  13. 根据权利要求1所述的电容触控笔，其中，所述吸能结构包括弹性支撑架。
  14. 根据权利要求13所述的电容触控笔，其中，所述弹性支撑架包括固定部和设于所述固定部上的多个弹性分支部，所述固定部与所述笔尖轴连接固定，所述弹性分支部与所述固定结构连接固定。
  15. 根据权利要求14所述的电容触控笔，其中，数量为多个的所述弹性分支部沿所述固定部的周缘均布设置。
  16. 根据权利要求14所述的电容触控笔，其中，所述弹性支撑架还包括加强辐条，相邻的两个所述弹性分支部通过所述加强辐条相连。
  17. 根据权利要求1所述的电容触控笔，其中，所述吸能结构包括包括弹性件和固定件，固定件固定在固定结构上，弹性件分别连接固定件与笔尖轴。
  18. 根据权利要求17所述的电容触控笔，其中，所述固定件包括固定板和设于所述固定板上的限位结构。
  19. 根据权利要求18所述的电容触控笔，其中，所述弹性件为弹簧，所述弹簧的一端与所述限位结构相配合。
  20. 根据权利要求19所述的电容触控笔，其中，所述限位结构呈环状或柱状。
PCT/CN2021/110172 2021-03-26 2021-08-03 电容触控笔 WO2022198876A1 (zh)

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