Tip Waterproof Structure and Stylus Pen

Abstract

The present invention discloses a waterproof structure for a pen tip and a stylus pen. The waterproof structure for the pen tip includes a pen shell, a pen core, and an elastic waterproof member. One end of the pen shell is provided with a through hole. The pen core is arranged inside the pen shell. The pen core has a pen tip section extending out of the pen shell from the through hole. The elastic waterproof member has a first connecting portion and a second connecting portion. The first connecting portion is sealingly sleeved on the pen tip section, and the second connecting portion is sealingly sleeved on the pen shell. When using the stylus pen, due to the indeterminate direction of the force on the pen core, the pen core will make a telescopic movement along the axial direction of the through hole of the pen shell and also produce slight deformation in other directions. Due to its own characteristics, the elastic waterproof member can deform along with the relative change between the pen core and the pen shell, ensuring that the pen tip is in a sealed state at any time, greatly increasing the reliability of waterproof and dustproof performance.

Description

Technical Field

[0001] The present invention relates to the technical field of stylus waterproofing, and particularly to a waterproof structure for the nib of a stylus and a stylus. Background Art

[0002] A stylus is a tool that can be used to touch electronic devices such as mobile phones and computers with capacitive touchscreens. It has a pen-like appearance, and users can click on the touch screen through the stylus to achieve human-computer interaction. A stylus generally includes a nib, a pen barrel, and an internal circuit. Since the nib will be worn to a certain extent during daily use, the nib and the pen barrel are generally detachably connected to facilitate users to replace the nib.

[0003] In life, it is inevitable to encounter some unexpected situations, such as the spillage of tea, coffee, soy milk, etc., which causes liquid to enter the interior of the stylus at the connection between the nib and the pen barrel, easily resulting in electronic short circuits or rusting of the stylus, thereby affecting the service life of the product and the user experience.

[0004] Currently, the electronic styluses on the market can only achieve basic writing functions and cannot truly achieve dust and waterproofing. Summary of the Invention

[0005] The main object of the present invention is to propose a waterproof structure for the nib of a stylus, aiming to improve the dust and waterproofing ability of the stylus.

[0006] To achieve the above object, the present invention proposes a waterproof structure for the nib of a stylus, including:

[0007] A pen shell, one end of the pen shell is provided with a through hole;

[0008] A pen core, the pen core is arranged inside the pen shell, and the pen core has a nib section extending out of the pen shell through the through hole;

[0009] An elastic waterproof member, the elastic waterproof member has a first connecting portion and a second connecting portion, the first connecting portion is sealingly sleeved on the nib section, and the second connecting portion is sealingly sleeved on the pen shell.

[0010] Optionally, a first annular groove extending circumferentially is formed on the circumferential wall of the nib section, and the first connecting portion of the elastic waterproof member is sealingly sleeved in the first annular groove.

[0011] Optionally, the first connecting portion and the nib section are integrally formed by injection molding.

[0012] Optionally, the pen shell includes a fastening section and a pen barrel section, the through hole is opened in the fastening section, the pen core passes through the fastening section, and the second connecting portion is sealingly sleeved on the fastening section.

[0013] Optionally, the fastening section has an external thread, and the second connecting portion of the elastic waterproof member has an internal thread that mates with the external thread, and the elastic waterproof member is fastened to the fastening section by thread fitting.

[0014] Optionally, a positioning surface is formed at the connection between the pen barrel section and the fastening section, the positioning surface faces the direction of the nib section, and the second connecting portion abuts against the positioning surface.

[0015] Optionally, a waterproof rib is provided on the abutting surface where the second connecting portion abuts against the positioning surface.

[0016] Optionally, the elastic waterproof member further has a deformable elastic wall, the first connecting portion, the deformable elastic wall, and the second connecting portion are sequentially connected, and a deformation space is provided between the deformable elastic wall and the nib section.

[0017] Optionally, a second annular groove is formed in the deformable elastic wall along the circumferential direction of the pen core, or a plurality of second annular grooves are formed in the deformable elastic wall along the circumferential direction of the pen core, and the plurality of second annular grooves are arranged along the axial direction of the pen core.

[0018] Optionally, the material of the elastic waterproof member is liquid silicone.

[0019] The present invention also provides a stylus pen, which includes the nib waterproof structure as described above.

[0020] The present invention discloses a nib waterproof structure and a stylus pen. The nib waterproof structure includes a pen shell, a pen core, and an elastic waterproof member. A through hole is provided at one end of the pen shell. The pen core is arranged in the pen shell. The pen core has a nib section that extends out of the pen shell through the through hole. The elastic waterproof member has a first connecting portion and a second connecting portion. The first connecting portion is sealingly sleeved on the nib section, and the second connecting portion is sealingly sleeved on the pen shell. When using the stylus pen, due to the uncertain direction of the force on the pen core, the pen core will make a telescopic movement along the axial direction of the through hole of the pen shell and will also have a slight deformation in other directions. Due to its own characteristics, the elastic waterproof member can deform along with the relative change between the pen core and the pen shell, ensuring that the nib is in a sealed state at any time, greatly increasing the reliability of waterproof and dustproof. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0022] Figure 1 A cross-sectional view of an embodiment of the present invention;

[0023] Figure 2 An overall view of an embodiment of the present invention.

[0024] Explanation of the reference numerals in the drawings:

[0025] Label Name Label Name 100 Pen case 110 Fastening section 120 Pen barrel section 200 Refill 210 Nib section 220 Main body section 300 Elastic waterproof part 310 First connecting part 320 Deformable elastic wall 330 Second connecting part 400 Signal probe 500 Pressure sensor 321 Deformation space 331 Waterproof rib

[0026] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0030] The present invention provides a waterproof structure for the nib, which is applicable to an electronic pen capable of realizing touch or writing functions on an electronic screen, such as a stylus pen, which can also be called a capacitive pen or a smart pen. Generally, the stylus pen includes a pen shell 100, a pen core 200 and an internal circuit assembly.

[0031] In one embodiment, the waterproof structure for the nib proposed by the present invention includes a pen shell 100, a pen core 200 and an elastic waterproof member 300.

[0032] One end of the pen shell 100 is provided with a through hole. The pen core 200 is disposed inside the pen shell 100, and the pen core 200 has a nib section 210 that extends out of the pen shell 100 through the through hole.

[0033] The style of the pen shell 100 is not limited. It is usually in the shape of a pen commonly seen in daily life and is used for holding. The style of the pen core 200 is also not limited. It is usually connected to the pen shell 100, which can be by plugging or other connection methods. It has a nib section 210 extending outside the shell and is used for writing, drawing, or touching on the capacitive screen.

[0034] The common connection method between the pen core 200 and the pen shell 100 is plugging. When using the plugging method for connection, its waterproofness and dustproofness are generally poor. Currently, most of the pen shells 100 of the stylus pens adopt an integrated pen shell 100, and the only place where water or dust can enter is the nib, that is, the plugging connection part between the pen core 200 and the pen shell 100.

[0035] In the present invention, an elastic waterproof member 300 is used to seal the stylus pen. The elastic waterproof member 300 has a first connection portion 310 and a second connection portion 330. The first connection portion 310 is sealingly sleeved on the nib section 210, and the second connection portion 330 is sealingly sleeved on the pen shell 100, sealing and wrapping the gap at the plugging part of the pen core 200 and the pen shell 100, thereby improving the reliability of waterproofing. There are various ways of sealing and sleeving, such as injection molding.

[0036] In practical applications, generally, it is required that the stylus pen can write with different thicknesses according to the user's needs. Generally, the greater the pressure when writing, the thicker the strokes displayed on the capacitive screen. The pen core 200 has two opposite ends. One end is the nib for writing, and the other end is connected to a signal probe 400 built into the shell. The signal probe 400 is connected to a pressure sensor 500. The pressure sensor 500 can sense the change in the user's writing pressure, thereby changing the thickness of the handwriting according to the change in the user's writing pressure, and then achieving an excellent experience. To enable the pressure sensor 500 to work properly, it is required that the pen core 200 can perform a certain degree of telescopic movement along the axial direction of the through hole.

[0037] The elastic waterproof member 300 adopted in this embodiment is made of a soft material, which is more likely to deform compared with general hard materials and can meet the forward and backward telescopic movement of the pen core 200 along the axial direction of the through hole. The elastic waterproof member 300 can adopt liquid silicone. Liquid silicone has excellent tear resistance, resilience, anti-yellowing property, thermal stability, and anti-aging property, and is safer and more environmentally friendly compared with most other materials. Of course, in other embodiments, the material of the elastic waterproof member 300 can also be elastic plastic (such as TPE, TPR, TPU, etc.) or other materials.

[0038] In daily writing and painting on the touch screen, the direction of the force applied to the pen tip is not single. Due to the action of external force, the pen tip will stretch back and forth along the axial direction of the through hole of the pen shell 100, and will inevitably shake slightly left and right due to the action of external force, resulting in slight deformation. In this way, the gap between the pen core 200 and the shell plug-in will increase. If it accidentally contacts the liquid at this time, the risk of liquid intrusion will increase. Furthermore, the pen core 200 inserted in the pen shell 100 will continuously collide with the inner wall of the pen shell 100 during use. As time goes by, it will produce certain wear and tear. The gap between the pen core 200 and the pen shell 100 plug-in will further increase, and the risk of liquid and dust intrusion will also increase accordingly. However, due to its own characteristics, the elastic material can shake along with the shaking of the pen core 200, ensuring that the pen tip is in a sealed state at any time, greatly increasing the reliability of waterproofing and dustproofing.

[0039] Compared with the previous waterproof scheme, the present invention directly uses the elastic waterproof member 300 to seal the gap at the connection between the pen core 200 and the pen shell 100. During the writing process, when the pen core 200 is forced to make a telescopic movement along the axial direction of the through hole of the pen shell 100, the elastic waterproof member 300 is squeezed to play a further waterproof and dustproof role. When the pen core 200 is forced to shake left and right, the elastic waterproof member 300 also shakes left and right, and it is difficult for liquid or dust to enter the interior of the pen shell 100, thereby greatly improving the waterproof and dustproof performance of the stylus.

[0040] It should be noted that the front and back mentioned here refer to the axial direction of the through hole of the pen housing 100 , and the left and right refer to directions forming an angle with the axial direction of the through hole of the pen housing 100 , rather than two fixed directions.

[0041] A specific implementation of this embodiment: the pen shell 100 of the touch pen is integrally injection-molded, and a through hole is opened at one end; the pen core 200 includes a pen tip section 210 and a main body section 220, and the pen tip section 210 includes a pen head and a first pen core 200 section, wherein the pen head is one end for contacting the capacitive screen for writing and drawing, and the pen head, the first pen core 200 section and the second pen core 200 section are connected and arranged in sequence, and the pen head and the first pen core 200 section are both extended outside the pen shell 100, and the main body section 220 is inserted into the through hole; the elastic waterproof part 300 is arranged around the first pen core 200 section, and has a first connecting part 310 and a second connecting part 330 opposite to each other, the first connecting part 310 is sealed and sleeved on the pen tip section 210 by injection molding, and the second connecting part 330 is sealed and sleeved on the pen shell 100, and the sealing sleeve method can be injection molding connection or gluing fixation.

[0042] In one embodiment, in order to make the connection between the first connecting portion 310 of the elastic waterproof member 300 and the pen tip segment 210 more stable, the pen tip segment 210 is provided with a first annular groove extending along the circumferential direction, and the first connecting portion 310 of the elastic waterproof member 300 is sealingly sleeved in the first annular groove; the groove depth and the length along the axis direction of the through hole of the first annular groove are not limited. One purpose of providing the annular groove is to increase the contact area between the first connecting portion 310 and the pen tip segment 210 to make the connection between the two tighter. The second purpose is that the annular groove further limits the first connecting portion 310, so that the elastic waterproof member 300 is not easy to fall off when squeezed.

[0043] Furthermore, the first connecting portion 310 is fixedly connected to the nib section 210, and the methods of fixed connection include but are not limited to gluing combination fixation, one-piece injection molding, two-color injection molding, clamp injection molding or liquid injection molding, among which injection molding has higher connection strength and better waterproof performance, and liquid and dust can basically not enter the interior of the pen case 100 from the connection between the first connecting portion 310 and the nib section 210.

[0044] In one embodiment, the pen case 100 includes a fastening section 110 and a pen shaft section 120, a through hole is opened in the fastening section 110, the pen core 200 passes through the through hole, and the second connecting portion 330 is sealingly sleeved on the fastening section 110. In actual application, the pen shaft section 120 is used for holding.

[0045] In this embodiment, the elastic waterproof component 300 is detachably connected to the fastening section 110. When using the stylus in daily life, the pen tip or the elastic waterproof component 300 may be damaged due to various accidents, such as falling, collision, scratching, etc. Even under natural conditions, the pen tip will produce a certain degree of wear and tear as the use time increases, and the sealing performance will inevitably decrease. When the elastic waterproof component 300 is detachably connected to the fastening section 110, the elastic waterproof component 300 and the pen core 200 can be replaced separately without replacing the entire stylus, which is convenient and will not cause waste.

[0046] In addition, if the first connection portion 310 of the elastic waterproof component 300 and the pen tip section 210 are fixedly connected by integral injection molding or other means, then the place where the stylus can penetrate liquid or enter dust is the fixing point of the second connection portion 330 and the fastening section 110. In this embodiment, the second connection portion 330 and the fastening section 110 are connected by threaded cooperation. The presence of the thread can further increase the difficulty of liquid entry and improve certain waterproof and dustproof performance.

[0047] In one embodiment, the diameter of the fastening section 110 is smaller than that of the pen barrel section 120. A positioning surface is formed at the connection between the fastening section 110 and the pen barrel section 120, and the positioning surface faces the direction of the nib section 210. The second connecting portion 330 abuts against this positioning surface. When the second connecting portion 330 is fixed to the fastening section 110, the second connecting portion 330 and this positioning surface are mutually extruded, and the waterproof effect is improved.

[0048] In one embodiment, waterproof ribs 331 are provided on the abutting surface where the second connecting portion 330 abuts against the positioning surface. The waterproof ribs 331 surround the fastening section 110 and are arranged on the abutting surface. When the second connecting portion 330 is sealingly sleeved on the fastening section 110, the abutting surface and the positioning surface are mutually extruded, and the waterproof ribs 331 are flattened, further playing a role in waterproofing and dustproofing.

[0049] In this embodiment, the style of the waterproof ribs 331 is not limited, and it is preferably able to contact the positioning surface evenly. Specifically, after cutting the waterproof ribs 331 surrounding the fastening section 110, two cut sections can be obtained, and the cut sections can be square, rectangular, arc-shaped, triangular or trapezoidal, etc.

[0050] In this embodiment, the waterproof ribs 331 can be arranged in a circular ring manner on the first contact surface, or can be arranged in a square or other shape manner on the first contact surface.

[0051] In this embodiment, the waterproof ribs 331 can be a single ring or multiple rings.

[0052] In one embodiment, the elastic waterproof member 300 includes a first connecting portion 310, a deformable elastic wall 320, and a second connecting portion 330. The first connecting portion 310, the deformable elastic wall 320, and the second connecting portion 330 are connected and arranged in sequence. The first connecting portion 310 is sealingly sleeved on the nib section 210, the second connecting portion 330 is sealingly sleeved on the pen case 100, the deformable elastic wall 320 surrounds the nib section 210, and a deformation space 321 is provided between the deformable elastic wall 320 and the nib section 210.

[0053] In practical applications, generally, it is required that the stylus can write with different thicknesses according to the user's needs. Generally, the greater the writing force, the thicker the stroke displayed on the capacitive screen; the pen core 200 has opposite ends, one end is the writing tip, and the other end is connected to a signal probe 400 built into the housing. The signal probe 400 is connected to a pressure sensor 500. The pressure sensor 500 can sense the change in the user's writing force, so as to change the thickness of the handwriting according to the change in the user's writing force, and then achieve an excellent experience effect and meet the user's needs. To enable the pressure sensor 500 to work properly, the pen core 200 needs to be able to stretch axially along the through hole to a certain extent.

[0054] In a specific implementation manner of this embodiment, the elastic waterproof member 300 is arranged around the nib section 210, between the pen tip and the pen case 100. There is a space between the elastic waterproof member 300 and the nib section 210. Specifically, there is a space between the deformation elastic wall 320 and the pen core 200 section. This space is the deformation space 321. It can be understood that when the user is writing, the pen tip will squeeze the elastic waterproof member 300. In current practice, generally, to ensure the writing comfort, the elasticity of the elastic waterproof member 300 is not particularly large. If there is no deformation space 321, under normal writing force, its deformation is very small and it is not easily sensed by the pressure sensor 500. However, the existence of the deformation space 321 can increase its deformation degree, so that the pen core 200 can smoothly perform telescopic movement along the axis of the through hole and be sensed by the pressure sensor 500.

[0055] In one embodiment, further, the deformation elastic wall 320 is provided with a second annular groove along the circumferential direction of the pen core 200. In this way, the deformation elastic wall 320 can be more easily compressed, so that when the nib section 210 is stressed, it is more likely to perform slight telescopic movement along the axis of the through hole. It should be noted that the "second" here does not refer to the quantity. The annular groove provided on the deformation elastic wall 320 can be one ring or multiple rings. It can be provided on the inner wall of the deformation elastic wall 320, or on its outer wall, or both the inner and outer walls. When the second annular groove is multiple rings, the multiple second annular grooves are arranged at intervals along the axial direction of the pen core 200.

[0056] The present invention also proposes a stylus pen, which has the nib waterproof structure described in any of the above embodiments. Therefore, the technical effects that can be achieved are exactly the same and will not be elaborated here.

[0057] The above are only the optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A waterproof structure for a pen tip, characterized in that, Comprising: A pen shell, one end of the pen shell is provided with a through hole; A pen core, the pen core is arranged in the pen shell, the pen core has a nib section extending out of the pen shell from the through hole, and a first annular groove extending circumferentially is formed on the circumferential wall of the nib section; An elastic waterproof member, the elastic waterproof member has a first connecting portion and a second connecting portion, the first connecting portion is sealingly sleeved on the nib section, the first connecting portion is sealingly sleeved in the first annular groove, and the second connecting portion is sealingly sleeved on the pen shell; The elastic waterproof member further has a deformed elastic wall, the first connecting portion, the deformed elastic wall, and the second connecting portion are sequentially connected, and a deformation space is provided between the deformed elastic wall and the nib section.

2. The nib waterproof structure according to claim 1, wherein The first connecting portion and the nib section are integrally formed by injection molding.

3. The nib waterproof structure according to claim 1, characterized in that, The pen shell includes a fastening section and a pen barrel section, the through hole is opened in the fastening section, the pen core passes through the fastening section, and the second connecting portion is sealingly sleeved on the fastening section.

4. The nib waterproof structure according to claim 3, characterized in that, The fastening section has an external thread, and the second connecting portion of the elastic waterproof member has an internal thread matching with the external thread, and the elastic waterproof member is fastened on the fastening section by thread matching.

5. The nib waterproof structure according to claim 3, characterized in that, A positioning surface is formed at the connection between the pen barrel section and the fastening section, the positioning surface faces the direction of the nib section, and the second connecting portion abuts against the positioning surface.

6. The nib waterproof structure according to claim 5, characterized in that, A waterproof rib is provided on the abutting surface where the second connecting portion abuts against the positioning surface.

7. The tip waterproof structure according to claim 1, wherein, One second annular groove is formed on the deformed elastic wall along the circumferential direction of the pen core, or a plurality of second annular grooves are formed on the deformed elastic wall along the circumferential direction of the pen core, and the plurality of second annular grooves are arranged along the axial direction of the pen core.

8. The nib waterproof structure according to claim 1, characterized in that, The material of the elastic waterproof member is liquid silicone.

9. A stylus, characterized in that, Including the nib waterproof structure according to any one of claims 1-8.

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