CN113190128A

CN113190128A - Capacitive touch pen

Info

Publication number: CN113190128A
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: 2021-07-30
Anticipated expiration: 2041-03-26
Also published as: CN113190128B

Abstract

The invention discloses a capacitive touch pen which comprises a fixing structure and a pen point assembly arranged in the fixing structure, wherein the fixing 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 fixing structure, the capacitive touch pen further 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 fixing structure. The capacitance touch control pen adopts the L-shaped elastic body to match with the universal structure, has a novel and practical structure, can effectively solve the problem that the strain gauge has large deformation difference under the same load condition when different writing angles are adopted, and achieves the same using effect and experience as the U-shaped elastic body; the universal structure can share part of stress of the elastic body and reduce the deformation amount of the elastic body, so that the service life of the elastic body is prolonged; in addition, the universal structure is arranged on the mounting column, and convenience can be brought to the assembling 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 popularization of capacitive screens, more and more electronic products such as tablet computers, mobile phones and navigators begin to use the capacitive screens for operation control, and although the capacitive screens can be touched by fingers, the display screens are easily polluted due to the pollution of the fingers, the touch control precision of the fingers is not good, and some professionals cannot achieve the required precision by the fingers, so more and more consumers seek high-quality capacitive touch pens to operate the touch screens.

The existing capacitive touch pen generally comprises a pen holder, a pen point assembly, a battery, an antenna, a main control panel and the like, wherein the pen point assembly is arranged in the pen holder, 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 elastic body and a strain gauge arranged on the elastic body.

Hua for all having applied for relevant patent protection in the aspect of the electric capacity pen structure with the apple company, wherein Hua for the problem that different angles of writing, the relation difference between load and the strainometer deformation is big can effectively be solved to a U type elastomer that the company proposed, for avoiding the patent of friend, the applicant has proposed the electric capacity touch-control pen of a novel structure.

Disclosure of Invention

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

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a capacitance touch pen, includes fixed knot structure and locates the nib subassembly in the fixed knot structure, and fixed knot structure includes the pen-holder, and the nib subassembly includes nib axle and strain sensor, and strain sensor includes the elastomer and locates the strainometer 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 structural connection fixed knot constructs.

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

Drawings

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

fig. 2 is a schematic structural diagram of a partial structure of a capacitive stylus according to a first embodiment of the present invention (after a pen holder is hidden);

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

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

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

Description of reference numerals:

1. a pen holder;

2. a nib assembly; 21. a nib shaft; 211. mounting a column; 212. a flat plate portion; 2121. limiting convex strips; 22. an electrode assembly; 23. a strain sensor; 231. an elastomer; 2311. a first arm; 2312. a second arm; 232. a strain gauge;

3. a main control board;

4. a battery;

5. an antenna assembly;

6. a pen holder; 61. windowing;

7. a shielding assembly;

8. a wireless charging module;

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

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 5, a capacitive stylus includes a fixing structure and a pen point assembly 2 disposed in the fixing structure, the fixing structure includes a pen holder 1, the pen point assembly 2 includes a pen point 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 one end of the elastic body 231 is fixed on the fixing structure, and further includes a mounting post 211 disposed on the pen point shaft 21 and a universal structure disposed on the mounting post 211, and the universal structure is connected to the fixing structure.

From the above description, the beneficial effects of the present invention are: the capacitive touch pen adopts the L-shaped elastic body 231 to be matched with the universal structure, is novel and practical in structure, can effectively solve the problem that the deformation difference of the strain gauge 232 is large under the same load condition when different writing angles are adopted, and achieves the same using effect and experience as the U-shaped elastic body 231; compared with a single-arm elastic body, the universal structure can share part of stress of the elastic body 231 and reduce the deformation 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 column 211, and convenience can be brought to the assembly work of the capacitive touch pen.

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

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

As can be seen from the above description, the limiting protrusion 2121 can function as a limiting second arm 2312, so as to facilitate the assembly of the elastic body 231 and the nib shaft 21, and improve the consistency of the product; in addition, the limiting convex strip 2121 can also play a role in protecting the second arm 2312 and prevent the second arm 2312 from being accidentally scratched in the assembling process.

Further, the universal structure includes a shaft sleeve assembly 9, the shaft sleeve assembly 9 includes 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.

As can be seen from the above description, the bushing assembly 9 is simple and practical in structure.

Further, the pen tip assembly 2 further includes an electrode assembly 22 disposed on the pen tip shaft 21, the mounting post 211 is disposed at an end of the pen tip 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 greater spacing between the first arm 2311 and the boss assembly 9 facilitates an increase in the sensitivity of the strain sensor 23.

Further, the stylus pen comprises a chip assembly, wherein the chip assembly is arranged on the stylus pen shaft 21 and is electrically connected with the strain gauge 232 and the electrode assembly 22 respectively.

Further, in the shaft sleeve assembly 9 the number of the outer shaft sleeve 92 is two, the outer shaft sleeve 92 comprises an annular part 921, the annular part 921 has an inner arc surface 9211, the outer peripheral wall of the inner shaft sleeve 91 is provided with an outer arc surface 911 matched with the inner arc surface 9211, and the annular part 921 of the outer shaft sleeve 92 is close to each other to form a limiting cavity of the inner shaft sleeve 91.

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

Further, the outer sleeve 92 further includes an extension portion 922, the extension portion 922 is located outside the annular portion 921 and connected to the annular portion 921, and the outer sleeve 92 is fixed to the fixing structure through the extension portion 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 as required, and the diversity of the capacitive touch pen is enriched.

Example one

Referring to fig. 1 to 5, a first embodiment of the present invention is: a capacitive touch pen can be used for touch equipment such as a mobile phone, a tablet personal computer and a navigator.

Referring to 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 electrically connected to the main control board 3, respectively, the pen point component 2 is located at a head of the pen holder 1, in this embodiment, the fixing structure further includes a pen holder 6 and a shielding component 7, the pen holder 6 and the shielding component 7 are disposed in the pen holder 1, respectively, the pen holder 6 is connected to 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 fixed to the pen holder 6, specifically, the pen point component 2 is fixedly connected with the pen support 6 through the shielding component 7. It should be noted that, in some other embodiments, the pen holder 6 and/or the shielding assembly 7 may not be provided in the fixing structure, and in this case, the pen tip assembly 2, the antenna assembly 5, the main control board 3, and the battery 4 may be directly fixed on the pen barrel 1.

For convenient charging, be equipped with wireless charging module 8 on the main control board 3, wireless charging module 8 with the main control board 3 electricity is connected, have on the pen support 6 corresponding to windowing 61 that wireless charging 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 to the nib shaft 21 and the fixing structure, and further includes a mounting post 211 disposed on the nib shaft 21 and a gimbal structure disposed on the mounting post 211, and the gimbal structure is connected to the fixing structure.

More specifically, the elastic body 231 includes a first arm 2311 and a second arm 2312 connected with each other, the first arm 2311 is fixedly connected with the fixing structure, the second arm 2312 is fixedly arranged on the nib shaft 21, and the strain gauge 232 is arranged on the first arm 2311. Preferably, the nib shaft 21 includes a flat plate portion 212, the second arm 2312 is fixed on the flat plate portion 212, the flat plate portion 212 is provided with two limiting convex strips 2121 for limiting the second arm 2312, and the second arm 2312 is located between the two limiting convex strips 2121. As a preferred embodiment, an end of the first arm 2311, which is far away from the second arm 2312, is fixed on the fixing structure, so that the assembly difficulty of the capacitive stylus pen can be reduced, the material can be saved, and the response sensitivity of the strain gauge 232 can be ensured.

To further ensure the sensitivity of the strain sensor 23, it is preferable that the mounting post 211 is disposed at an end of the stylus shaft 21 away from the electrode assembly 22, and the first arm 2311 is disposed away from the mounting post 211, that is, a sufficient distance is left between the first arm 2311 and the gimbal structure.

In detail, the first arm 2311 is welded and fixed to the shielding assembly 7, the second arm 2312 is welded and fixed to the flat plate portion 212, and the gimbal structure is welded and fixed to the shielding assembly 7. In other embodiments, the first arm 2311 can also be directly fixed on the pen bracket 6 or the pen holder 1, and the specific fixing mode can be selected from screw joint, adhesive joint, clamping and the like; the universal structure can also be directly fixed on the pen bracket 6 or the pen holder 1, and the specific fixing mode can be selected from screw connection, glue connection, clamping connection and the like; the second arm 2312 may also be fixedly connected to the nib shaft 21 by means of screwing, gluing, clamping, or the like.

In order to make the internal structure of the capacitive stylus more compact and shorten the conduction distance between the electrode assembly 22 and the chip assembly, it is preferable that the chip assembly is disposed on the flat plate portion 212, the chip assembly is electrically connected to the strain gauge 232 and the electrode assembly 22, and it is further preferable that the chip assembly is fixed on the limiting convex strip 2121, so that the limiting convex strip 2121 not only plays a role in limiting and protecting the second arm 2312, but also plays a role in providing a mounting position for the chip assembly, thereby achieving multiple purposes.

Referring to fig. 4 and 5, in the present embodiment, the universal structure includes a shaft sleeve assembly 9, the shaft sleeve assembly 9 includes an inner shaft sleeve 91 and an outer shaft sleeve 92, which are matched with each other, the inner shaft sleeve 91 is sleeved on the mounting post 211, and the outer shaft sleeve 92 is fixed on the fixing structure. In detail, in the axle sleeve subassembly 9 the quantity of outer axle sleeve 92 is two, outer axle sleeve 92 includes cyclic annular portion 921, cyclic annular portion 921 has interior cambered surface 9211, the periphery wall of interior axle sleeve 91 be equipped with interior cambered surface 9211 matched with outer cambered surface 911, two the cyclic annular portion 921 of outer axle sleeve 92 is close to each other and forms spacingly the spacing cavity of interior axle sleeve 91, two open-ended diameters of spacing cavity are less than the maximum diameter of outer cambered surface 911, so can avoid interior axle sleeve 91 to break away from spacing cavity does benefit to the structural stability who guarantees axle sleeve subassembly 9.

As shown in fig. 5, preferably, two outer bushings 92 in the bushing assembly 9 are connected and fixed to each other, in this embodiment, the outer bushings 92 further include an extension portion 922, the extension portion 922 is located outside the annular portion 921 and connected to the annular portion 921, and the outer bushings 92 are fixed to the fixed structure through the extension portion 922. Specifically, two extending portions 922 in the shaft sleeve assembly 9 are welded and fixed, and the inner shaft sleeve 91 is welded and fixed on the mounting column 211, but it is also feasible that the two outer shaft sleeves 92 are connected by other fixing methods, such as screwing, clamping, bonding, and the like; similarly, it is also feasible that the inner sleeve 91 is fixed to the mounting post 211 by other fixing methods, such as clamping, interference fit, adhesion, screwing, and the like.

As a preferred embodiment, the inner bushing 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, so that when the inner bushing 91 is mounted on the mounting post 211, the chamfer structures 912 can play a role of guiding, thereby facilitating the mounting of the inner bushing 91; when the inner sleeve 91 and the mounting post 211 are welded, the chamfer structure 912 can play a role of tin holding, so that the connection stability of the inner sleeve 91 and the mounting post 211 is improved. It can be seen that the chamfer structure 912 also achieves multiple purposes in this embodiment.

In order to ensure the structural stability of the outer sleeve 92 and facilitate the processing and manufacturing thereof, the annular portion 921 and the extension portion 922 are an integral structure formed by stretching a metal plate.

Example two

The second embodiment of the invention provides further improvement on the pen bracket on the basis of the first embodiment, and specifically comprises the following steps: the pen support is a metal injection molding structural part, so that design and manufacture of the pen support structure can be facilitated.

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

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a capacitance touch-control pen, includes fixed knot structure and locates the nib subassembly in the fixed knot structure, and fixed knot structure includes the pen-holder, and the nib subassembly includes nib axle and strain sensor, and strain sensor includes the elastomer and locates the strainometer on the elastomer, its characterized in that: the elastic body is L-shaped, the end of one end of the elastic body is fixed on the fixed structure, the elastic body further 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.

2. The capacitive stylus of claim 1, wherein: 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.

3. The capacitive stylus of claim 2, wherein: the nib shaft comprises a flat plate part, the second arm is fixed on the flat plate part, and the flat plate part is provided with a limiting convex strip for limiting the second arm.

4. The capacitive stylus of claim 2, 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, the inner shaft sleeve is sleeved on the mounting column, and the outer shaft sleeve is fixed on the fixing structure.

5. The capacitive stylus of claim 4, wherein: the nib subassembly is still including locating epaxial electrode subassembly of nib, the nib axle is kept away from the one end of electrode subassembly is equipped with the erection column, first arm is kept away from the erection column sets up.

6. The capacitive stylus of claim 5, wherein: still include the chip subassembly, the chip subassembly is located on the nib axle, the chip subassembly respectively with the strainometer electrode subassembly electric connection.

7. The capacitive stylus of claim 4, wherein: the shaft sleeve assembly is characterized in that the number of the outer shaft sleeves is two, the outer shaft sleeves comprise annular parts, the annular parts are provided with inner arc surfaces, the peripheral walls of the inner shaft sleeves are provided with outer arc surfaces matched with the inner arc surfaces, and the outer arc surfaces are close to each other to form spacing limiting cavities of the inner shaft sleeves.

8. The capacitive stylus of claim 7, wherein: two outer shaft sleeves in the shaft sleeve assembly are mutually connected and fixed.

9. The capacitive stylus of claim 7, wherein: the outer shaft 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 shaft sleeve is fixed on the fixing structure through the extension portion.

10. 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.