Active stylus

Abstract

The invention provides an active touch pen. The active touch pen comprises a pen body, a circuit board module, a pressure sensor and a pressing piece, the pen body is provided with a rib, and the rib has flexibility. The circuit board module and the pressure sensor are respectively arranged in the pen body. The pressure sensor is provided with a welding surface, and the pressure sensor abuts against and is electrically connected to the circuit board module through the welding surface. The pressing piece is assembled to the pen body to press the rib and drives the rib to deform so as to press the welding face.

Description

Technical Field

[0001] The invention relates to an active touch pen. Background Art

[0002] With the advancement and development of technology, many electronic devices on the market use touch panels or touch pads as operating interfaces. Users usually operate on the touch panels with their fingers. However, when sliding a finger on the touch panel, the friction is too large due to the large contact area of ​​the finger. It is not suitable for large-scale or fast input, and accidental touches may also occur. Therefore, a stylus pen is introduced.

[0003] Existing styluses can be divided into active and passive types. In an active stylus, the signal transmitting circuit in the stylus sends a signal, and the corresponding touch panel (or touch pad) receives the signal and determines the coordinates of the contacted position and the touch pressure. In other words, when the stylus is driven (written), the pressure on the stylus is transmitted to the pressure sensor to generate a touch pressure sensing signal.

[0004] However, as the technology of pressure sensors improves, the information they need to transmit also increases. The electrical transmission path of the prior art needs to occupy a certain space inside the active stylus, and it is also easy to be damaged during the operation due to component assembly or welding. Therefore, how to ensure the smooth progress of the above operation process has become a problem that technicians in this field need to think about and solve. Summary of the invention

[0005] The present invention is directed to an active touch pen, which provides a clamping structure required for combining a pressure sensor with a circuit board module through a pressing member and a flexible rib, so as to facilitate the installation and fixing of the pressure sensor and the circuit board module.

[0006] According to an embodiment of the present invention, an active stylus pen includes a pen body, a circuit board module, a pressure sensor, and a pressing member. The pen body has ribs, and the ribs are flexible. The circuit board module and the pressure sensor are respectively arranged in the pen body. The pressure sensor has a welding surface, and the pressure sensor is abutted and electrically connected to the circuit board module through the welding surface. The pressing member is assembled to the pen body to press the ribs, and drives the ribs to deform and press against the welding surface.

[0007] In the active stylus according to an embodiment of the present invention, the pen body includes a carrier having a groove, a rib extending across the groove to divide the groove into sub-groove 1 and sub-groove 2, and a pressure sensor and a pressing member are respectively assembled into sub-groove 1 and sub-groove 2.

[0008] In the active stylus according to the embodiment of the present invention, the pressure sensor and the circuit board module are assembled to the carrier from opposite sides of the carrier.

[0009] In the active stylus according to the embodiment of the present invention, the rib forms a bent protrusion from the second sub-groove toward the first sub-groove.

[0010] In the active stylus according to the embodiment of the present invention, the carrier and the rib form two bent depressions opposite to each other in the second sub-groove to fit the pressing member.

[0011] In the active stylus according to the embodiment of the present invention, the carrier further has a structural reinforcement rib formed at one of the bent recesses facing away from the rib.

[0012] In the active stylus according to the embodiment of the present invention, the carrier further has a stop convex portion, and the pressure sensor is placed in the first sub-slot and rests against the stop convex portion.

[0013] In the active stylus according to the embodiment of the present invention, the rib surface contacts the center of the welding surface.

[0014] In the active stylus according to the embodiment of the present invention, the circuit board module abuts against the eccentric portion of the welding surface.

[0015] In the active stylus according to the embodiment of the present invention, the active stylus further comprises a core module, which is disposed on the stylus body and abuts against the pressure-sensitive surface of the pressure sensor. The pressure-sensitive surface and the welding surface are two opposite surfaces of the pressure sensor.

[0016] In the active stylus according to the embodiment of the present invention, the pressing point of the pen core module relative to the pressure sensor and the pressing point of the circuit board module relative to the pressure sensor are not on the same axis.

[0017] In the active stylus according to the embodiment of the present invention, the circuit board module includes a first circuit board, the pressure sensor includes a second circuit board, and the first circuit board and the second circuit board are vertically abutted against each other.

[0018] In the active stylus according to the embodiment of the present invention, the second circuit board has a welding surface and a pressure-sensitive surface facing each other, and the active stylus further includes a core module abutting against the pressure-sensitive surface.

[0019] In the active stylus according to the embodiment of the present invention, the pressing member is a screw, which is simultaneously fixed to the circuit board module and the carrier.

[0020] Based on the above, the active stylus electrically connects the pressure sensor to the circuit board module with its welding surface, and the pen core module abuts against the pressure-sensitive surface of the pressure sensor. More importantly, while the pen body's carrier accommodates the circuit board module and the pressure sensor, the pen body's ribs are further used in conjunction with the abutting member to abut and limit the pressure sensor accommodated therein. When the circuit board module and the pressure sensor are to be welded, the welding surface of the pressure sensor can be limited to a fixed position, allowing the welding operation to proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an exploded schematic diagram of an active stylus according to an embodiment of the present invention.

[0022] Figure 2 and Figure 3 Drawing from different perspectives Figure 1 A partial schematic diagram of some components.

[0023] Figure 4 and Figure 5 Drawing from different perspectives Figure 1 A partial schematic diagram of some components after assembly.

[0024] Figure 6 yes Figure 1 A partial cross-sectional view of the components after assembly.

[0025] Figure 7 FIG. 4 is a partial cross-sectional view of an active stylus according to another embodiment of the present invention. DETAILED DESCRIPTION

[0026] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0027] Figure 1 is an exploded schematic diagram of an active stylus according to an embodiment of the present invention. Figure 2 and Figure 3 Drawing from different perspectives Figure 1 Please refer to the partial schematic diagram of some components. Figure 1 The active stylus 100 includes a pen body 110, a circuit board module 120, a pressure sensor 130, a pressing member 140, and a pen core module 150. The pen body 110 includes a carrier 111 and outer parts 112 and 113, wherein the carrier 111 is used to carry related components and is accommodated in the assembled outer parts 112 and 113. The pen core module 150 is assembled on the carrier 111 and the outer part 113, and protrudes from the pen body 110 through the outer part 113.

[0028] Please also refer to Figures 1 to 3 In this embodiment, the carrier 111 of the pen body 110 further has a groove SL and a rib 111a disposed therein, wherein the rib 111a spans the groove SL and further divides it into a sub-groove 1 SL1 and a sub-groove 2 SL2. Furthermore, the aforementioned circuit board module 120 includes a first circuit board 121 (and electronic components thereon) and a locking component 122, wherein the circuit board 121 is assembled and fixed to the lower side of the carrier 111 by the locking component 122. The pressure sensor 130 includes a sensing unit 132 and a second circuit board 131, wherein the sensing unit 132 is disposed on the second circuit board 131 and is inserted into the sub-groove 1 SL1. The pressing member 140 is assembled to the pen body 110 and is particularly inserted into the sub-groove 2 SL2 of the carrier 111.

[0029] Furthermore, the carrier 111 is made of plastic material, for example. Therefore, the rib 111a is flexible and elastic because it extends across the groove SL, so that the circuit board module 120 and the pressing member 140 respectively disposed in the sub-slot 1 SL1 and the sub-slot 2 SL2 can interact with the rib 111a. Figures 1 to 3 As shown, the second circuit board 131 of the pressure sensor 130 is inserted upright in the sub-slot 1 SL1, and the pressing member 140 is, for example, a screw, adapted to the sub-slot 2 SL2 with a screw hole, that is, the rib 111a therein forms a bending protrusion P1 from the sub-slot 2 SL2 toward the sub-slot 1 SL1, and the carrier 111 and the rib 111a form two bending depressions R1 and R2 (also where the threads of the screw hole are located) opposite to each other in the sub-slot 2 SL2. In this way, after the second circuit board 131 is inserted into the sub-slot 1 SL1, the pressing member 140 is then inserted into the sub-slot 2 SL2, so that the rib 111a can be pushed to deform from the sub-slot 2 SL2 toward the sub-slot 1 SL1, so that the bending protrusion P1 presses the second circuit board 131.

[0030] It is also worth mentioning here that Figure 3 As shown, the carrier 111 further has a side wall 111c and a structural reinforcement rib 111d, wherein the side wall 111c and the rib 111a are opposite to each other across the second sub-slot SL2, and the structural reinforcement rib 111d is formed at the bending recess R2 facing away from the rib 111a, that is, the side of the side wall 111c facing away from the second sub-slot SL2. In this embodiment, the structural reinforcement rib 111d is used to strengthen the resistance of the bending recess R2 (i.e., the side wall 111c) to the pressing member 140 (inserted into the second sub-slot SL2), so that the pressing member 140 inserted into the second sub-slot SL2 can smoothly drive the rib 111a to deform.

[0031] Figure 4 and Figure 5 Drawing from different perspectives Figure 1 Partial schematic diagram of some components after assembly. Please refer to Figure 4and Figure 5 And compare Figure 2 or Figure 3 The second circuit board 131 of the pressure sensor 130 has a welding surface S1 and a pressure-sensitive surface S2 that are opposite to each other. There is at least one electrically conductive path between the pressure-sensitive surface S2 and the welding surface S1, so that the sensing unit 132 is pressed by the pen core module 150 to generate a signal that can be smoothly transmitted to the welding surface S1. The pressure sensor 130 is abutted and electrically connected to the circuit board module 120 through the welding surface S1 to transmit the signal to the circuit board module 120. The pressing member 140 is assembled to the pen body 110 to press the rib 111a, and drive the rib 111a to deform and press against the welding surface S1. The carrier 111 also has a stop protrusion 111b. After the second circuit board 131 of the pressure sensor 130 is inserted into the sub-slot SL1, it will bear against the stop protrusion 111b. In this way, when the first circuit board 121 of the circuit board module 120 is configured on the carrier 111, it will abut against the welding surface S1 of the second circuit board 131. Figure 5 As shown, the first circuit board 121 and the second circuit board 131 are vertically abutted against each other. The second circuit board 131 has a plurality of pads 133 located on the welding surface S1, which correspond to the plurality of pads 121a of the first circuit board 121, and the corresponding pads 133 and 121a are welded by welding material 200 to achieve the effect of electrical conduction.

[0032] Figure 6 yes Figure 1 Partial cross-sectional view of the components after assembly. Please also refer to Figure 2 and Figure 6 In this embodiment, the pressure sensor 130 and the circuit board module 120 are assembled to the carrier 111 from opposite sides of the carrier 111. Figure 1 , Figure 6 For example, the pressure sensor 130 is assembled from top to bottom to the sub-slot SL1 of the carrier 111, and the circuit board module 120 is assembled from bottom to top to the carrier 111, so as to provide space on the upper side of the carrier 111 to accommodate electronic components or electronic components on the first circuit board 121.

[0033] Relatively speaking, in order to achieve the above configuration and facilitate the assembly and combination of the pressure sensor 130 and the circuit board module 120, after the refill module 150 is assembled to the pen body 110 and is aligned with the central axis CX of the pen body 110 and the sensing unit 132 of the pressure sensor 130, the rib 111a is in surface contact with the center of the welding surface S1, so that the pressing member 140 drives the rib 111a to press against the center of the welding surface S1. Furthermore, after the circuit board module 120 is assembled to the carrier 111, it is abutted against the eccentric part of the welding surface S1, that is, Figure 6As shown, it is lower than the central axis CX of the pen body 110. In other words, the pressing point of the pen core module 150 relative to the pressure sensor 130 and the pressing point of the circuit board module 120 relative to the pressure sensor 130 are not on the same axis.

[0034] Figure 7 is a partial cross-sectional view of an active stylus according to another embodiment of the present invention. Figure 7 , and the aforementioned embodiments (e.g. Figure 6 ) The difference is that in this embodiment, the pressing member 340 is assembled to the carrier 111 from bottom to top, that is, the pressing member 340, such as the same screw as shown in the previous embodiment, first passes through the first circuit board 321 of the circuit board module, and then is locked to the carrier 111, so that the circuit board module and the carrier 111 are locked and fixed together. This further strengthens the fixing effect of the carrier 111 and the circuit board module, and is conducive to the process of welding the first circuit board 321 and the second circuit board 131.

[0035] In another illustrated embodiment of the present invention, the pressing member 140 (or pressing member 340) may be replaced by a plug instead of the aforementioned screw, which is also inserted into the second sub-slot SL2 to deform the rib 111a, and the same pressing effect as described above can be achieved.

[0036] In summary, in the above-mentioned embodiment of the present invention, the active stylus electrically connects the pressure sensor to the circuit board module with its welding surface, and the pen core module abuts against the pressure-sensitive surface of the pressure sensor. More importantly, while the pen body's carrier accommodates the circuit board module and the pressure sensor, the pen body's ribs are further used in combination with the abutting member to abut and limit the pressure sensor accommodated therein. When the circuit board module and the pressure sensor are to be welded, the welding surface of the pressure sensor is restricted to a fixed position, so that the welding operation can be carried out smoothly.

[0037] In other words, the carrier is provided with a groove and a rib is arranged across it to divide it into a first sub-groove and a second sub-groove for inserting the pressure sensor and the pressing member respectively, wherein the rib has a bent depression corresponding to the pressing member and a bent convex portion corresponding to the second circuit board of the pressure sensor, so that the pressing member and the second circuit board can be respectively adapted. After the pressing is completed and the first circuit board of the circuit board module is arranged on the carrier, the first circuit board can be made perpendicular to the second circuit board and abut against the eccentricity of the welding surface of the second circuit board, thereby allowing the pads of the first circuit board and the second circuit board to correspond to each other, which is conducive to the welding process.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An active stylus pen, characterized in that: include: The pen body has ribs, and the ribs are flexible; A circuit board module is disposed in the pen body; A pressure sensor is disposed in the pen body, the pressure sensor has a welding surface, and the pressure sensor abuts and is electrically connected to the circuit board module through the welding surface; as well as The pressing piece is assembled to the pen body to press the ribs, and drives the ribs to deform and press against the welding surface.

2. The active stylus pen according to claim 1, characterized in that: The pen body includes a carrier having a groove. The ribs extend across the groove to divide the groove into a first sub-groove and a second sub-groove. The pressure sensor and the pressing member are respectively assembled into the first sub-groove and the second sub-groove.

3. The active stylus pen according to claim 2, characterized in that: The pressure sensor and the circuit board module are assembled to the carrier from opposite sides of the carrier.

4. The active stylus pen according to claim 2, characterized in that: The rib forms a bent protrusion from the second sub-groove toward the first sub-groove.

5. The active stylus pen according to claim 2, characterized in that: The bearing member and the rib form two bending depressions opposite to each other in the second sub-groove to fit the pressing member.

6. The active stylus pen according to claim 5, characterized in that: The bearing member further has a structural reinforcement rib formed at a position of one of the bending recesses facing away from the rib.

7. The active stylus pen according to claim 2, characterized in that: The bearing member also has a stop convex portion, and the pressure sensor is placed in the first sub-slot and rests against the stop convex portion.

8. The active stylus pen according to claim 1, characterized in that: The circuit board module abuts against an eccentric portion of the welding surface.

9. The active stylus pen according to claim 1, characterized in that: It also includes a core module, which is arranged on the pen body and abuts against the pressure-sensitive surface of the pressure sensor. The pressure-sensitive surface and the welding surface are two opposite surfaces of the pressure sensor.

10. The active stylus pen according to claim 9, characterized in that: The pressing point of the refill module relative to the pressure sensor and the pressing point of the circuit board module relative to the pressure sensor are not on the same axis.

11. The active stylus pen according to claim 1, characterized in that: The circuit board module includes a first circuit board, and the pressure sensor includes a second circuit board. The first circuit board and the second circuit board are vertically abutted against each other.

12. The active stylus pen according to claim 11, characterized in that: The second circuit board has the welding surface and the pressure-sensitive surface facing each other, and the active stylus pen further includes a core module abutting against the pressure-sensitive surface.

13. The active stylus pen according to claim 2, characterized in that: The pressing member is a screw, which is simultaneously locked to the circuit board module and the carrier.

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