Touch pen and electronic equipment
By using the design of module brackets and cantilever components in the electronic stylus, the strain gauge is fixedly installed, which solves the problem that the force transmission structure cannot be compact in the prior art, and improves the space utilization and structural stability.
Patent Information
- Application Number
- CN202421012069.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The frame size of the existing electronic stylus cannot be compact in the pen tip space, resulting in low internal space utilization and unable to effectively reduce the space occupied by the strain gauge module structure.
Adopt a structural design including pen case, refill, module support, refill support, cantilever assembly and strain gauge. The module support is built into the pen tip part, the cantilever assembly is arranged axially along the refill, and the strain gauge is fixedly installed on the cantilever. The components are fixed in the hollow structure of the module bracket by welding to reduce space.
It improves the stability of the force transmission structure of the stylus pen, and effectively reduces the space occupied by the strain gauge module structure in the stylus pen, improving the internal space utilization rate.
Smart Images
Figure CN222260026U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of touch pens, and in particular to a touch pen and an electronic device. Background Art
[0002] An electronic stylus is a small pen-shaped tool used to input commands to a computer screen, mobile device, drawing tablet or other device with a touch screen. Users can select files or draw by clicking the touch screen with the stylus. To achieve good writing performance of the electronic stylus, there are relatively strict requirements on the distance between the electrode structures of the electronic stylus, the signal shielding between the electrodes, and the size of the electrodes.
[0003] In the related art, existing electronic stylus pens are usually internally provided with a force transmission structure connected to the pen core to sense the force degree of the pen core so as to draw handwriting of different thicknesses on the display screen. However, in order to ensure sensitivity and stability, the frame size of the force transmission structure of the existing stylus cannot be made too small, and usually cannot be limited to the accommodation space of the pen tip, and needs to extend to occupy the space of the pen shaft, resulting in a reduction in the internal space occupancy rate of other components in the pen shaft, thereby causing a waste of internal space and low internal space utilization. Utility Model Content
[0004] The main purpose of the utility model is to provide a touch pen and an electronic device, aiming to reduce the occupied space of the strain gauge module structure in the touch pen.
[0005] To achieve the above-mentioned purpose, the utility model proposes a touch pen, comprising: a pen case, a pen core, a module bracket, a pen core bracket, a cantilever assembly and a strain gauge; the pen core has a force-bearing end located outside the pen case, and a connecting end inserted into the pen case; the module bracket is built into the nib part of the pen case; the pen core bracket is built into the module bracket and connected to the connecting end of the pen core; the cantilever assembly comprises a first cantilever and a second cantilever arranged at intervals along the axial direction of the pen core, the second cantilever is arranged relative to the first cantilever away from the force-bearing end of the pen core, the first cantilever fixes the pen core bracket and the module bracket, and the second cantilever fixes the pen core bracket and the module bracket; the strain gauge is fixedly mounted on the second cantilever.
[0006] Optionally, the module bracket is arranged in a cone that gradually tapers toward the force-bearing end of the pen core, and the module bracket is provided with a through hole extending along the axial direction, and the through hole includes a first cavity, a second cavity and a third cavity which are arranged in sequence from the force-bearing end of the pen core toward the connecting end and whose diameters increase in sequence; the pen core bracket includes a main body and a connecting tube arranged at one end of the main body, the connecting tube is arranged in the first cavity, the main body and the first cantilever are arranged in the second cavity, the second cantilever is arranged in the third cavity, the end of the main body close to the connecting tube is fixedly connected to the first cantilever, and the end of the main body facing away from the connecting tube is fixedly connected to the second cantilever.
[0007] Optionally, a notch is provided on the end face of the module bracket close to one end of the third cavity, and the second cantilever includes a middle plate for attaching the strain gauge and a limiting portion provided on the outer periphery of the middle plate, and the limiting portion is snap-fitted with the notch.
[0008] Optionally, a side wall of the second cavity is provided with a limiting hole for the first cantilever to pass through.
[0009] Optionally, the first cantilever includes a middle section and extension sections bent and extended from both ends of the middle section toward the same side, the middle section is inserted into the limiting hole and fixedly connected to the module bracket, and the extension section is fixedly connected to the refill bracket.
[0010] Optionally, the middle plate is provided with the limiting parts at both ends along the length direction thereof, and the module bracket is provided with the notches at two opposite sides thereof, and the limiting parts are engaged with the notches in a one-to-one manner.
[0011] Optionally, the connecting tube is provided with a threaded hole, and the pen core is threadedly connected to the threaded hole.
[0012] Optionally, the strain gauge is attached to the second cantilever, a welding point for welding with an electronic component is provided in the middle of the strain gauge, and strain resistors are symmetrically arranged on both sides of the welding point.
[0013] Optionally, positive strain resistors are symmetrically arranged on both sides of the welding point, and negative strain resistors are symmetrically arranged on a side of the positive strain resistor away from the welding point.
[0014] The utility model also provides an electronic device, comprising any one of the above-mentioned stylus and a touch screen for being touched by the stylus.
[0015] The technical solution of the utility model adopts a stylus including a pen case, a pen core, a module bracket, a pen core bracket, a cantilever assembly and a strain gauge; the module bracket is arranged at the pen tip part of the pen case; the pen core bracket is built into the module bracket; the cantilever assembly is arranged in the module bracket, and the cantilever assembly includes a first cantilever and a second cantilever arranged along the axial direction of the pen core, the first cantilever is fixedly connected to the pen core bracket and the module bracket, and the second cantilever is fixedly connected to the pen core bracket and the module bracket; the strain gauge is fixedly installed on the second cantilever. It not only improves the stability of the force transmission structure of the stylus, making the structural rigid connection more reliable, but also effectively reduces the space occupied by the strain gauge module structure in the stylus, and improves the space utilization rate in the stylus. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0017] Figure 1 It is a structural schematic diagram of an embodiment of the touch pen and electronic device of the utility model;
[0018] Figure 2 It is a structural schematic diagram of an embodiment of the pen tip portion of the touch pen in the utility model;
[0019] Figure 3 This is a schematic structural diagram of an embodiment of a refill holder of a touch pen in the utility model;
[0020] Figure 4 It is a structural schematic diagram of another embodiment of the pen tip part of the touch pen in the present utility model;
[0021] Figure 5 is a cross-sectional view of the tip of the stylus pen in the present invention;
[0022] Figure 6 It is a cross-sectional view of the module bracket of the touch pen in the present invention.
[0023] Description of Figure Numbers:
[0024] Label name Label name 1 Module bracket 2 Pen refill holder 3 Cantilever components 4 Strain gauges 11 First cavity 12 Second cavity 13 The third cavity 21 main body 22 Connecting pipe 31 First cantilever 32 Second cantilever 41 Solder Points 42 Strain Resistors 321 Middle plate 322 Limiting part 121 Limit hole 131 gap 10 Pen case 20 Refills
[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0028] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0029] The utility model provides a touch pen and an electronic device.
[0030] Reference Figure 1-5 , Figure 1 It is a structural schematic diagram of an embodiment of the touch pen and electronic device of the utility model; Figure 2 It is a structural schematic diagram of an embodiment of the pen tip portion of the touch pen of the utility model; Figure 3 This is a schematic structural diagram of an embodiment of a refill holder 2 of a touch pen of the utility model; Figure 4 It is a structural schematic diagram of another embodiment of the pen tip part of the touch pen of the utility model; Figure 5It is a cross-sectional view of the tip part of the stylus pen of the utility model; in one embodiment, the utility model proposes a stylus pen, comprising: a pen shell 10, a pen core 20, a module bracket 1, a pen core bracket 2, a cantilever assembly 3, and a strain gauge 4; the pen core 20 has a force-bearing end located outside the pen shell 10, and a connecting end inserted into the pen shell 10; the module bracket 1 is built into the pen tip part of the pen shell 10; the pen core bracket 2 is built into the module bracket 1 and connected to the connecting end of the pen core 20; the cantilever assembly 3 includes a first cantilever 31 and a second cantilever 32 arranged at intervals along the axial direction of the pen core 20, the second cantilever 32 is arranged relative to the first cantilever 31 away from the force-bearing end of the pen core 20, the first cantilever 31 fixes the pen core bracket 2 and the module bracket 1, and the second cantilever 32 fixes the pen core bracket 2 and the module bracket 1; the strain gauge 4 is fixedly installed on the second cantilever 32.
[0031] In this embodiment, the module bracket 1, the refill bracket 2, the cantilever assembly 3 and the strain gauge 4 constitute a strain gauge module structure. The module bracket 1 is the shell of the entire strain gauge module structure and is a hollow structure. The interior of the hollow structure can completely accommodate the refill bracket 2, the cantilever assembly 3 and the strain gauge 4. The refill bracket 2 is built into the module bracket 1 and is fixed to the interior of the hollow structure of the module bracket 1 by welding through the cantilever assembly 3. The force-bearing end is the tip of the stylus pen, which is used to contact the screen and move to form a writing track, and the connecting end is used to be electrically connected to the circuit structure in the stylus pen. The cantilever assembly 3 is a force transmission structure in the strain gauge module structure, which is used to transmit the force condition of the refill 20, including a first cantilever 31 arranged inside the hollow structure and a second cantilever 32 arranged at the end of the hollow structure. The first cantilever 31 and the second cantilever 32 are both provided with welding points for fixed connection with the module bracket 1 and the refill bracket 2. The number of cantilevers can be increased according to the force condition of the stylus pen during use to increase the stability of the force transmission structure. The strain gauge 4 is arranged to fit the surface of the second cantilever 32, and converts the force of the pen core 20 into an electrical signal and transmits it to the circuit system of the stylus to sense the user's writing. In addition, in the present application, the outer contour of the strain gauge 4 is arranged to fit the contour of the second cantilever 32, and the sensing resistor and the solder joint 41 area inside it are arranged according to the outer contour of the strain gauge 4. The arrangement of the sensing resistors can form an electric bridge to ensure that the sensitivity of the strain gauge 4 after the size reduction can still meet the user's writing requirements, while ensuring the sensing sensitivity of the strain gauge 4 and saving the internal structure space of the stylus.
[0032] The technical solution of the utility model adopts a cantilever assembly 3 including a first cantilever 31 and a second cantilever 32. The first cantilever 31 and the second cantilever 32 are respectively fixedly connected to the refill bracket 2 and the module bracket 1 to transmit the stress condition of the refill 20, and a strain gauge 4 is fixedly installed on the second cantilever 32 to sense the stress condition of the refill 20, and then the stress condition of the refill 20 is converted into an electrical signal and transmitted to the circuit system in the stylus to sense the handwriting of the user; the refill bracket 2, the cantilever assembly 3 and the strain gauge 4 in the technical solution of the utility model are completely accommodated in the module bracket 1, and do not occupy the space outside the module bracket 1. The strain gauge 4 has an outer contour that is compatible with the second cantilever 32 assembly 3, and is provided with an induction resistor to form an electric bridge to ensure the sensitivity of the strain gauge 4. There is no need to increase the volume of the second cantilever 32 to adapt to the size of the traditional strain gauge 4. On the premise of ensuring the reliable stability of the cantilever assembly 3 structure, the space occupied by the strain gauge module structure in the stylus can be effectively reduced, thereby improving the space utilization rate in the stylus.
[0033] Reference Figure 5-6 , Figure 5 is a cross-sectional view of the tip of the stylus pen in the present invention; Figure 6 It is a cross-sectional view of a module bracket 1 of the touch pen of the utility model; in one embodiment, the module bracket 1 is set in a cone that gradually tapers toward the force-bearing end of the pen core 20, and the module bracket 1 is provided with a through hole extending along the axial direction, and the through hole includes a first cavity 11, a second cavity 12 and a third cavity 13 which are sequentially arranged from the force-bearing end of the pen core 20 toward the connecting end and whose diameters increase sequentially; the pen core bracket 2 includes a main body 21 and a connecting tube 22 arranged at one end of the main body 21, the connecting tube 22 is arranged in the first cavity 11, the main body 21 and the first cantilever 31 are arranged in the second cavity 12, the second cantilever 32 is arranged in the third cavity 13, the end of the main body 21 close to the connecting tube 22 is fixedly connected to the first cantilever 31, and the end of the main body 21 away from the connecting tube 22 is fixedly connected to the second cantilever 32. The through hole can achieve the effect of temporary limiting the pen core holder 2 after it is installed and prevent it from falling out, so that it is easier to weld the cantilever assembly 3 with the pen core holder 2 and the module holder 1 later to complete the final fixation; the connecting tube 22 is integrally formed with the main body 21, and the connecting tube 22 is used to connect the pen core 20 to sense the user's writing handwriting. Its diameter is slightly smaller than the diameter of the first cavity 11 so that it is inserted into the first cavity 11. The end surface of the main body 21 away from the connecting tube 22 is convexly provided with a boss, and the boss and the second cantilever 32 can be fixedly connected by welding or bonding. The boss acts on the middle part of the second cantilever 32. When acting on the second cantilever 32, the strain gauge 4 can sense the pressure from the boss to form strain to sense the user's writing handwriting. The boss is only arranged in the middle part, which can also reduce unnecessary material waste, reduce the volume of the pen core holder 2, and save the internal space of the stylus.
[0034] Reference Figure 4 , Figure 4 1 is a schematic structural diagram of another embodiment of the tip portion of the touch pen of the utility model; in one embodiment, a notch 131 is provided on the end face of the module bracket 1 close to the third cavity 13, the second cantilever 32 includes a middle plate 321 for attaching the strain gauge 4 and a limiting portion 322 arranged on the outer periphery of the middle plate 321, the limiting portion 322 is engaged with the notch 131, the notch 131 is arranged at the open end of the third cavity 13 in a radial direction, the second cantilever 32 is inserted into the notch 131 and welded and fixed, the notch 131 of the third cavity 13 can lift the second cantilever 32 and suspend it in the third cavity 13, so that the strain gauge 4 attached to the second cantilever 32 is also suspended in the third cavity 13, so that the stress sensed by the strain gauge 4 is the stress of the pen core 20, the stress effect of the rest of the touch pen on the strain gauge 4 is reduced, and the rest of the stress effect is prevented from excessively affecting the final sensing result.
[0035] In one embodiment, the side wall of the second cavity 12 is provided with a limiting hole 121 for the first cantilever 31 to pass through. The limiting hole 121 is provided in an elongated strip shape for fixing the first cantilever 31, and the width of the elongated limiting hole 121 is slightly larger than the thickness of the first cantilever 31, so that the first cantilever 31 can be inserted into the elongated limiting hole 121 and fixed by welding.
[0036] In one embodiment, the first cantilever 31 includes a middle section, and extended sections bent and extended from both ends of the middle section toward the same side, the middle section is inserted into the limiting hole 121 and fixedly connected to the module bracket 1, and the extended section is fixedly connected to the refill bracket 2; to facilitate the insertion of the middle section of the first cantilever 31 into the bar-shaped through hole, a protrusion matching the length of the bar-shaped through hole can be provided on the outer edge of the middle section so that the first cantilever 31 can be more firmly fixed in the module bracket 1, and the extended section can be fixedly connected to the refill bracket 2 by welding.
[0037] Reference Figure 2 , Figure 2 It is a structural schematic diagram of an embodiment of the pen tip part of the touch pen of the utility model; in one embodiment, the middle plate 321 is respectively provided with the limiting parts 322 at both ends along its length direction, and the opposite sides of the module bracket 1 are respectively provided with the notches 131, and the limiting parts 322 are snap-fitted with the notches 131 one-to-one; the limiting part 322 is fixedly connected to the module bracket 1, and the limiting part 322 can be snapped into the notch 131 opened at the top of the third cavity 13 to achieve a temporary limiting effect, and provide a welding point for the second cantilever 32, and by welding the limiting part 322 and the module bracket 1, the second cantilever 32 can be fixedly connected to the module bracket 1 and suspended in the third cavity 13.
[0038] In one embodiment, the connecting tube 22 is provided with a threaded hole, and the refill 20 is threadedly connected to the threaded hole. The stylus refill 20 is provided with an external thread that matches the threaded hole, so that the stylus refill 20 and the first end are detachably connected by a thread pair. When the refill 20 is damaged and needs to be replaced, it is only necessary to unscrew the refill 20 and replace it, without disassembling the outer shell of the stylus to replace the refill 20.
[0039] In one embodiment, the strain gauge 4 is attached to the second cantilever 32, and a soldering point 41 for welding with electronic components is provided in the middle of the strain gauge 4, and strain resistors 42 are symmetrically arranged on both sides of the soldering point 41. The strain gauge 4 is attached to the second cantilever 32, and a soldering point 41 for welding with electronic components is provided in the middle of the strain gauge 4, and strain resistors 42 are symmetrically arranged on both sides of the soldering point 41. The strain gauge 4 is adhesive and is arranged to fit the outer surface plane of the second cantilever 32, so that it can be fixed to the module bracket 1 with the second cantilever 32, and sense the stress from the second cantilever 32. The sensing surface can deform with the stress, and convert the deformation information into an electrical signal to be transmitted in the circuit system. The soldering point 41 is used to weld electronic parts such as the flexible circuit board in the stylus.
[0040] In one embodiment, positive strain resistors are symmetrically arranged on both sides of the solder joint 41, and negative strain resistors are symmetrically arranged on the side of the positive strain resistor away from the solder joint 41; two strain resistors 42 are arranged on each side of the solder joint 41, and the stress on the strain gauge 4 area close to both sides of the solder joint 41 is the stress applied in the direction away from the pen tip, and the stress in this direction is set as positive stress, and the resistors arranged in the positive stress area are set as positive strain resistors, and their strain values are positive strain values; the stress on the strain gauge 4 away from both sides of the solder joint 41 is the stress applied in the direction of the pen tip, and the stress in this direction is set as negative stress, and the resistors arranged in the negative stress area are set as negative strain resistors, and their strain values are negative strain values; the four resistors have the same resistance value, and stresses in different directions make the four resistors arranged laterally along the shape of the second cantilever 32 form an electric bridge, which can improve the sensitivity of the strain gauge 4, so that even if the strain gauge 4 is reduced in size to the inside of the second cantilever 32, it can meet the sensing needs of the user when using the stylus.
[0041] The utility model also proposes an electronic device, comprising any of the above-mentioned stylus and a touch screen for the stylus to touch. The stylus contacts the touch screen and moves to form a writing track. The module bracket 1, the refill bracket 2, the cantilever assembly 3 and the strain gauge 4 are all arranged at the tip of the stylus pen housing 10, and the space of the pen barrel of the pen housing 10 can be used to accommodate a PCB board and a battery assembly, etc. The cantilever assembly 3 does not need to occupy the space of the pen barrel, thereby achieving a higher space utilization rate.
[0042] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A touch pen, characterized in that: include: Pen case; A pen core, wherein the pen core has a force-bearing end located outside the pen housing and a connecting end inserted into the pen housing; A module bracket, built into the pen tip portion of the pen housing; A refill support, built into the module support and connected to the connecting end of the refill; A cantilever assembly, comprising a first cantilever and a second cantilever spaced apart along the axial direction of the pen core, wherein the second cantilever is arranged at a force-bearing end of the pen core relative to the first cantilever, the first cantilever fixedly connects the pen core support and the module support, and the second cantilever fixedly connects the pen core support and the module support; as well as The strain gauge is fixedly mounted on the second cantilever.
2. The stylus pen according to claim 1, wherein: The module bracket is arranged in a cone shape which tapers toward the force-bearing end of the pen core, and the module bracket is provided with a through hole extending along the axial direction, and the through hole comprises a first cavity, a second cavity and a third cavity which are arranged in sequence from the force-bearing end of the pen core toward the connecting end and whose diameters increase in sequence; The refill holder includes a main body and a connecting tube arranged at one end of the main body, the connecting tube is arranged in the first cavity, the main body and the first cantilever are arranged in the second cavity, the second cantilever is arranged in the third cavity, one end of the main body close to the connecting tube is fixedly connected to the first cantilever, and one end of the main body away from the connecting tube is fixedly connected to the second cantilever.
3. The stylus pen according to claim 2, wherein: A notch is provided on the end face of one end of the module bracket close to the third cavity, and the second cantilever includes a middle plate for attaching the strain gauge and a limiting portion provided on the outer periphery of the middle plate, and the limiting portion is snap-fitted with the notch.
4. The stylus pen according to claim 2, wherein: The side wall of the second cavity is provided with a limiting hole for the first cantilever to pass through.
5. The stylus pen according to claim 4, wherein: The first cantilever includes a middle section and extension sections bent and extended from both ends of the middle section toward the same side, the middle section is inserted into the limiting hole and fixedly connected to the module bracket, and the extension section is fixedly connected to the refill bracket.
6. The stylus pen according to claim 3, wherein: The middle plate is provided with the limiting parts at both ends along the length direction thereof, and the module bracket is provided with the notches at two opposite sides thereof, and the limiting parts are engaged with the notches in a one-to-one manner.
7. The touch pen according to claim 2, wherein: The connecting tube is provided with a threaded hole, and the pen core is threadedly connected with the threaded hole.
8. The stylus pen according to any one of claims 1 to 7, characterized in that: The strain gauge is attached to the second cantilever, a welding spot for welding with electronic components is arranged in the middle of the strain gauge, and strain resistors are symmetrically arranged on both sides of the welding spot.
9. The stylus pen according to claim 8, wherein: Positive strain resistors are symmetrically arranged on both sides of the welding point, and negative strain resistors are symmetrically arranged on one side of the positive strain resistor away from the welding point.
10. An electronic device, characterized in that: It comprises any one of the stylus pen described in claims 1-9 and a touch screen for being touched by the stylus pen.