CN113190128B

CN113190128B - Capacitive touch pen

Info

Publication number: CN113190128B
Application number: CN202110327378.2A
Authority: CN
Inventors: 付松; 吴远丽; 赵兴军; 宋喆; 虞成城
Original assignee: Shenzhen Sunway Communication Co Ltd
Current assignee: Shenzhen Sunway Communication Co Ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2023-06-06
Anticipated expiration: 2041-03-26
Also published as: CN113190128A

Abstract

The invention discloses a capacitive touch pen, which comprises a fixed structure and a pen point assembly arranged in the fixed structure, wherein the fixed structure comprises a pen holder, the pen point assembly comprises a pen point shaft and a strain sensor, the strain sensor comprises an elastic body and a strain gauge arranged on the elastic body, the elastic body is L-shaped, the end head of one end of the elastic body is fixed on the fixed structure, the capacitive touch pen also comprises a mounting column arranged on the pen point shaft and a universal structure arranged on the mounting column, and the universal structure is connected with the fixed structure. The capacitive touch pen adopts the L-shaped elastic body matched with the universal structure, is novel and practical in structure, can effectively solve the problem of large deformation difference of the strain gauge under the same load condition when different writing angles are achieved, and achieves the same using effect and experience as those of the U-shaped elastic body; the universal structure can share partial stress of the elastomer, so that the deformation of the elastomer is reduced, and the service life of the elastomer is prolonged; in addition, the universal structure is installed on the installing column, and convenience can be brought to the assembly work of the capacitive touch pen.

Description

Capacitive touch pen

Technical Field

The invention relates to the technical field of touch control equipment, in particular to a capacitive touch pen.

Background

With the increasing popularity of capacitive screens, more and more electronic products such as tablet computers, mobile phones and navigator begin to use the capacitive screens for operation control, although the capacitive screens can be touched by fingers, the touch accuracy of the fingers is not good because the touch screen is easy to be stained by the dirt of the fingers, and some professionals cannot achieve the required accuracy by using the fingers, so that more and more consumers pursue high-quality capacitive touch pens to operate the touch screens.

The conventional capacitive touch pen generally comprises a pen holder, a pen point assembly, a battery, an antenna, a main control board and the like, wherein the pen point assembly comprises a pen point shaft, and a strain sensor and an electrode assembly which are respectively arranged on the pen point shaft, and the strain sensor comprises an elastomer and a strain gauge arranged on the elastomer.

The Hua-Cheng and apple companies apply for related patent protection in the aspect of a capacitance pen structure, wherein the U-shaped elastomer provided by the Hua-Cheng company can effectively solve the problems of different writing angles and large relation difference between load and strain gauge deformation, and the applicant provides a capacitance touch pen with a novel structure for avoiding patents of friends.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: a capacitive stylus with novel structure is provided.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a capacitive touch pen, includes fixed knot constructs and locates the nib subassembly in the fixed knot constructs, and fixed knot constructs including the pen-holder, and the nib subassembly includes nib axle and strain sensor, and strain sensor includes the elastomer and locates the strain gauge on the elastomer, and the elastomer is L style of calligraphy and its one end is fixed on fixed knot constructs, still including locating the epaxial erection column of nib and locating the universal structure on the erection column, universal structure connects fixed knot constructs.

The invention has the beneficial effects that: the capacitive touch pen adopts the L-shaped elastic body matched with the universal structure, is novel and practical in structure, can effectively solve the problem of large deformation difference of the strain gauge under the same load condition when different writing angles are achieved, and achieves the same using effect and experience as those of the U-shaped elastic body; compared with the single-arm elastic body, the universal structure can share part of stress of the elastic body, and reduce deformation of the elastic body, so that the service life of the elastic body is prolonged; in addition, the universal structure is installed on the installing column, and convenience can be brought to the assembly work of the capacitive touch pen.

Drawings

Fig. 1 is a schematic structural diagram of an overall structure of a capacitive touch pen according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a part of a capacitive touch pen according to the first embodiment of the present invention (after hiding the pen holder);

fig. 3 is a schematic structural diagram of a part of the structure of a capacitive touch pen according to the first embodiment of the present invention (after hiding the pen holder and a part of the pen holder);

fig. 4 is a schematic structural diagram of a nib assembly in a capacitive touch pen according to a first embodiment of the present invention;

fig. 5 is a cross-sectional view of a sleeve assembly in a capacitive stylus according to a first embodiment of the invention.

Description of the reference numerals:

1. a penholder;

2. a nib assembly; 21. a pen tip shaft; 211. a mounting column; 212. a flat plate portion; 2121. limit raised strips; 22. an electrode assembly; 23. a strain sensor; 231. an elastomer; 2311. a first arm; 2312. a second arm; 232. strain gauges;

3. a main control board;

4. a battery;

5. an antenna assembly;

6. a pen stand; 61. windowing;

7. a shielding assembly;

8. a wireless charging module;

9. a sleeve assembly; 91. an inner sleeve; 911. an outer cambered surface; 912. a chamfering structure; 92. an outer sleeve; 921. an annular portion; 9211. an intrados surface; 922. an extension.

Detailed Description

In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.

Referring to fig. 1 to 5, a capacitive touch pen includes a fixing structure and a pen tip assembly 2 disposed in the fixing structure, the fixing structure includes a pen shaft 1, the pen tip assembly 2 includes a pen tip shaft 21 and a strain sensor 23, the strain sensor 23 includes an elastic body 231 and a strain gauge 232 disposed on the elastic body 231, the elastic body 231 is L-shaped and has an end fixed on the fixing structure, and further includes a mounting post 211 disposed on the pen tip shaft 21 and a universal structure disposed on the mounting post 211, and the universal structure is connected with the fixing structure.

From the above description, the beneficial effects of the invention are as follows: the capacitive touch pen adopts the L-shaped elastic body 231 to be matched with a universal structure, is novel and practical, can effectively solve the problem that strain gauges 232 are large in deformation difference under the same load condition when different writing angles are achieved, and achieves the same use effect and experience as those of the U-shaped elastic body 231; and compared with a single-arm elastic body alone, the increase of the universal structure can share partial stress of the elastic body 231 and reduce deformation quantity of the elastic body 231, so that the service life of the elastic body 231 is prolonged; in addition, the universal structure is mounted on the mounting post 211, which can also facilitate the assembly work of the capacitive stylus.

Further, the elastic body 231 includes a first arm 2311 and a second arm 2312 connected to each other, the first arm 2311 is fixedly connected to the fixing structure, the second arm 2312 is fixed to the pen tip shaft 21, and the strain gauge 232 is disposed on the first arm 2311.

Further, the pen tip shaft 21 includes a flat plate portion 212, the second arm 2312 is fixed on the flat plate portion 212, and a limiting protruding strip 2121 for limiting the second arm 2312 is provided on the flat plate portion 212.

As can be seen from the above description, the spacing protruding bar 2121 can play a role of spacing the second arm 2312, which facilitates assembling work of the elastic body 231 and the pen tip shaft 21, and improves product consistency; in addition, the spacing rib 2121 can also function to protect the second arm 2312 and prevent the second arm 2312 from being scratched accidentally during assembly.

Further, the universal structure comprises a shaft sleeve assembly 9, the shaft sleeve assembly 9 comprises an inner shaft sleeve 91 and an outer shaft sleeve 92 which are matched, the inner shaft sleeve 91 is sleeved on the mounting column 211, and the outer shaft sleeve 92 is fixed on the fixing structure.

From the above description, the sleeve assembly 9 is simple and practical.

Further, the nib assembly 2 further includes an electrode assembly 22 disposed on the nib shaft 21, the mounting post 211 is disposed at an end of the nib shaft 21 away from the electrode assembly 22, and the first arm 2311 is disposed away from the mounting post 211.

As can be seen from the above description, the first arm 2311 has a larger distance from the sleeve assembly 9, which is advantageous for improving the sensitivity of the strain sensor 23.

Further, the pen tip assembly further comprises a chip assembly disposed on the pen tip shaft 21, and the chip assembly is electrically connected with the strain gauge 232 and the electrode assembly 22, respectively.

Further, the number of the outer sleeves 92 in the sleeve assembly 9 is two, the outer sleeves 92 include an annular portion 921, the annular portion 921 has an inner arc surface 9211, an outer arc surface 911 matched with the inner arc surface 9211 is provided on an outer peripheral wall of the inner sleeve 91, and the annular portions 921 of the two outer sleeves 92 are close to each other to form a limiting cavity for limiting the inner sleeve 91.

Further, two of the outer sleeves 92 of the sleeve assembly 9 are fixedly connected to each other.

Further, the outer sleeve 92 further includes an extension 922, and the extension 922 is located outside the ring 921 and connected to the ring 921, and the outer sleeve 92 is fixed to the fixing structure by the extension 922.

Further, the fixing structure further comprises a pen support 6 arranged in the pen holder 1 and/or a shielding component 7 arranged in the pen holder 1.

According to the description, the specific installation positions of the universal structure are various and can be set according to the needs, so that the diversity of the capacitive touch pen is enriched.

Example 1

Referring to fig. 1 to 5, a first embodiment of the present invention is as follows: a capacitive stylus can be used for touch control operation of touch control equipment such as mobile phones, tablet computers, navigator and the like.

Please combine fig. 1 to 3, the capacitive touch pen includes a fixing structure, the fixing structure includes a pen holder 1, a pen point component 2, a chip component (not shown), a main control board 3, a battery 4 and an antenna component 5 are disposed in the pen holder 1, the antenna component 5, the chip component and the battery 4 are respectively electrically connected with the main control board 3, the pen point component 2 is located at the head of the pen holder 1, in this embodiment, the fixing structure further includes a pen support 6 and a shielding component 7, the pen support 6 and the shielding component 7 are respectively disposed in the pen holder 1, the pen support 6 is connected with the pen point component 2, the shielding component 7 covers the pen point component 2 to shield the pen point component 2, the antenna component 5, the main control board 3 and the battery 4 are respectively fixed on the pen support 6, specifically, the pen point component 2 is connected and fixed with the pen support 6 through the shielding component 7. In other embodiments, the fixing structure may not be provided with the pen holder 6 and/or the shielding component 7, and the pen tip component 2, the antenna component 5, the main control board 3 and the battery 4 may be directly fixed on the pen holder 1.

For convenient charging, be equipped with wireless module 8 that charges on the main control board 3, wireless module 8 that charges with the main control board 3 electricity is connected, have on the pen support 6 and correspond to the windowing 61 that wireless module 8 set up.

Referring to fig. 4, specifically, the nib assembly 2 includes a nib 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 strain gauge 232 disposed on the elastic body 231, the elastic body 231 is L-shaped, the elastic body 231 is respectively connected and fixed with the nib shaft 21 and the fixing structure, and the nib assembly further includes a mounting post 211 disposed on the nib shaft 21 and a universal structure disposed on the mounting post 211, and the universal structure is connected with the fixing structure.

More specifically, the elastic body 231 includes a first arm 2311 and a second arm 2312 that are connected, the first arm 2311 is fixedly connected to the fixing structure, the second arm 2312 is fixed on the pen tip shaft 21, and the strain gauge 232 is disposed on the first arm 2311. Preferably, the pen tip shaft 21 includes a flat plate portion 212, the second arm 2312 is fixed on the flat plate portion 212, a limiting protruding strip 2121 for limiting the second arm 2312 is provided on the flat plate portion 212, the number of the limiting protruding strips 2121 is two, and the second arm 2312 is located between the two limiting protruding strips 2121. As a preferred embodiment, the end of the first arm 2311 far away from the end of the second arm 2312 is fixed on the fixing structure, so that the assembling difficulty of the capacitive stylus can be reduced, materials can be saved, and the response sensitivity of the strain gauge 232 can be ensured.

To further secure the sensitivity of the strain sensor 23, it is preferable that the mounting post 211 is provided at an end of the stylus shaft 21 remote from the electrode assembly 22, and the first arm 2311 is provided remote from the mounting post 211, that is, a sufficient space is maintained between the first arm 2311 and the gimbaled structure.

In detail, the first arm 2311 is welded to the shielding member 7, the second arm 2312 is welded to the flat plate portion 212, and the gimbal is welded to the shielding member 7. In other embodiments, the first arm 2311 may also be directly fixed on the pen stand 6 or the pen holder 1, where a specific fixing manner may be selected from screwing, gluing, clamping, and the like; the universal structure can also be directly fixed on the pen support 6 or the pen holder 1, and the specific fixing mode can be selected from screw connection, cementing connection, clamping connection and the like; the second arm 2312 may be fixedly connected to the pen tip shaft 21 by screwing, gluing, clamping or other fixing methods.

In order to make the internal structure of the capacitive stylus more compact and shorten the conducting distance between the electrode assembly 22 and the chip assembly, preferably, the chip assembly is disposed on the flat plate portion 212, and the chip assembly is electrically connected with the strain gauge 232 and the electrode assembly 22, and further preferably, the chip assembly is fixed on the spacing protruding strip 2121, so that the spacing protruding strip 2121 not only plays a role in spacing and protecting the second arm 2312, but also plays a role in providing an installation position for the chip assembly, thereby realizing multiple purposes.

Referring to fig. 4 and 5, in this embodiment, the universal structure includes a sleeve assembly 9, the sleeve assembly 9 includes an inner sleeve 91 and an outer sleeve 92 that are matched with each other, the inner sleeve 91 is sleeved on the mounting post 211, and the outer sleeve 92 is fixed on a fixing structure. In detail, the number of the outer sleeves 92 in the sleeve assembly 9 is two, the outer sleeves 92 comprise annular portions 921, the annular portions 921 have inner cambered surfaces 9211, outer circumferential walls of the inner sleeves 91 are provided with outer cambered surfaces 911 matched with the inner cambered surfaces 9211, the annular portions 921 of the two outer sleeves 92 are mutually close to form limiting cavities for limiting the inner sleeves 91, and diameters of two openings of the limiting cavities are smaller than the maximum diameter of the outer cambered surfaces 911, so that the inner sleeves 91 can be prevented from being separated from the limiting cavities, and structural stability of the sleeve assembly 9 is guaranteed.

As shown in fig. 5, preferably, two outer sleeves 92 of the sleeve assembly 9 are fixedly connected to each other, in this embodiment, the outer sleeves 92 further include an extension 922, the extension 922 is located outside the annular portion 921 and is connected to the annular portion 921, and the outer sleeve 92 is fixed to the fixing structure by the extension 922. Specifically, the two extending portions 922 in the sleeve assembly 9 are welded and fixed, the inner sleeve 91 is welded and fixed on the mounting post 211, and it is also possible to connect the two outer sleeves 92 by other fixing methods, such as screwing, clamping, bonding, etc.; likewise, the inner hub 91 may be fastened to the mounting post 211 by other fastening means, such as a snap fit, interference fit, adhesive, screw, etc.

As a preferred embodiment, the inner sleeve 91 is provided with a mounting hole matched with the mounting post 211, and both ends of the mounting hole are respectively provided with a chamfer structure 912, and the chamfer structure 912 can play a guiding role when the inner sleeve 91 is mounted on the mounting post 211, so that the inner sleeve 91 is convenient to mount; when the inner sleeve 91 and the mounting post 211 are welded, the chamfer 912 can serve to contain tin, thereby improving the stability of the connection of the inner sleeve 91 and the mounting post 211. It can be seen that the chamfer 912 also provides a one-piece multi-purpose in this embodiment.

To ensure structural stability of the outer sleeve 92 and to facilitate manufacturing thereof, the ring portion 921 and the extension portion 922 are integrally formed by stretching a metal plate.

Example two

The second embodiment of the invention provides a further improvement on the pen stand based on the first embodiment, specifically: the pen support is a structural member formed by metal injection molding, so that the design and the manufacture of a pen support structure can be facilitated.

In summary, the capacitive touch pen provided by the invention adopts the L-shaped elastomer to be matched with the universal structure, has novel and practical structure, can effectively solve the problem of large deformation difference of the strain gauge under the same load condition when different writing angles are achieved, and achieves the same use effect and experience as the U-shaped elastomer; compared with the single-arm elastic body, the universal structure can share part of stress of the elastic body, and reduce deformation of the elastic body, so that the service life of the elastic body is prolonged; in addition, the universal structure is installed on the installing column, and convenience can be brought to the assembly work of the capacitive touch pen.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.

Claims

1. The utility model provides a capacitive touch pen, includes fixed knot constructs and locates the nib subassembly in the fixed knot constructs, and fixed knot constructs including the pen-holder, and the nib subassembly includes nib axle and strain sensor, and strain sensor includes the elastomer and locates the strain gauge on the elastomer, its characterized in that: the elastic body is L-shaped, the end head of one end of the elastic body is fixed on the fixing structure, the elastic body comprises a first arm and a second arm which are connected, the first arm is fixedly connected with the fixing structure, the second arm is fixed on the pen point shaft, and the strain gauge is arranged on the first arm; the pen point shaft comprises a flat plate part, the second arm is fixed on the flat plate part, the flat plate part is provided with limiting convex strips for limiting the second arm, the number of the limiting convex strips is two, and the second arm is positioned between the two limiting convex strips; the pen point pen is characterized by further comprising a mounting column arranged on the pen point shaft and a universal structure arranged on the mounting column, wherein the universal structure is connected with the fixing structure.

2. The capacitive stylus of claim 1, wherein: the pen point shaft comprises a flat plate part, the second arm is fixed on the flat plate part, and a limiting convex strip for limiting the second arm is arranged on the flat plate part.

3. The capacitive stylus of claim 1, wherein: the universal structure comprises a shaft sleeve assembly, the shaft sleeve assembly comprises an inner shaft sleeve and an outer shaft sleeve which are matched with each other, the inner shaft sleeve is sleeved on the mounting column, and the outer shaft sleeve is fixed on the fixing structure.

4. A capacitive stylus according to claim 3, wherein: the pen point assembly further comprises an electrode assembly arranged on the pen point shaft, one end, far away from the electrode assembly, of the pen point shaft is provided with a mounting column, and the first arm is far away from the mounting column.

5. The capacitive stylus of claim 4, wherein: the strain gauge comprises a pen tip shaft, a strain gauge body, a strain gauge and an electrode assembly, and is characterized by further comprising a chip assembly, wherein the chip assembly is arranged on the pen tip shaft and is electrically connected with the strain gauge and the electrode assembly respectively.

6. A capacitive stylus according to claim 3, wherein: the outer shaft sleeves in the shaft sleeve assembly are two in number, each outer shaft sleeve comprises an annular part, each annular part is provided with an inner cambered surface, the outer peripheral wall of each inner shaft sleeve is provided with an outer cambered surface matched with the corresponding inner cambered surface, and the annular parts of the two outer shaft sleeves are mutually close to form a limiting cavity for limiting the corresponding inner shaft sleeve.

7. The capacitive stylus of claim 6, wherein: two of the outer sleeves in the sleeve assembly are connected and fixed with each other.

8. The capacitive stylus of claim 6, wherein: the outer sleeve further comprises an extension portion, the extension portion is located on the outer side of the annular portion and connected with the annular portion, and the outer sleeve is fixed on the fixing structure through the extension portion.

9. The capacitive stylus of claim 1, wherein: the fixing structure further comprises a pen support arranged in the pen holder and/or a shielding component arranged in the pen holder.