Active touch pen

Abstract

The active touch pen comprises a pen container, a pen holder and a control chip, the pen holder comprises a pen holder section and a pen point section which are mutually independent, the pen holder section and the pen point section are both made of insulating materials, a plurality of conductive particles are evenly distributed on the pen holder section and the pen point section, the active touch pen further comprises an insulating electricity gathering ring sleeve, the pen point section is sleeved with the insulating electricity gathering ring sleeve, and the insulating electricity gathering ring sleeve is axially limited. The pen point and the tail end of the pen point section extend out of the insulating electricity gathering ring sleeve, the tail end of the pen point section is connected with the head end of the pen holder section to form a pen holder, the signal output end of the control chip is electrically connected to the tail end of the pen holder section, the control chip and the pen holder are arranged in the pen container, and the insulating electricity gathering ring sleeve is detachably assembled at an opening of the pen container. And combining to form the active touch pen. The utility model has the advantages of simple structure, low manufacturing cost, low use cost and convenience in maintenance.

Description

Technical Field

[0001] The utility model relates to a touch pen, in particular to an active touch pen. Background Art

[0002] Mainstream 3C products such as smartphones and tablets all use capacitive touch panel technology. The screen glass of capacitive touch panels contains a layer of ITO conductive material. The finger or stylus is a conductor. When the point is on the touch screen, a ground loop is formed at the contact point, which absorbs a small current. The screen determines the touch point by sensing the change in the capacitance value of the XY axis and can generate a touch response at that position.

[0003] Styluses include passive styluses and active styluses. Passive styluses replace fingers as conductors and do not require power. The pen tip is usually thicker to achieve sufficient capacitance sensing. As a result, passive styluses cannot meet the needs of finer touch tracks, such as electronic signatures and fine line drawings.

[0004] The active stylus contains a battery and a control chip. The control chip sends a driving or touch signal, so that the touch panel can confirm the pen tip position coordinates of the active stylus based on the signal emission point, and use the pressure detection module to send a touch signal when the pen tip contacts the touch panel, thereby achieving the touch purpose.

[0005] The pen holder of an active stylus pen is usually an integrated structure, with the front end of the pen holder reduced to form a pen tip, and the rear end connected to the battery via a control chip. Since the tip of an active stylus pen is fine and usually made of elastic material, it has poor durability, high overall replacement cost, and is also cumbersome.

[0006] Therefore, how to design an active stylus with a simple structure and low use cost is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0007] The purpose of the utility model is to provide an active touch pen with a simple structure, low manufacturing cost, low use cost and convenient maintenance in view of the deficiencies in the prior art.

[0008] The technical solution of the utility model is: an active touch pen, including a pen barrel, a pen shaft, and a control chip, the pen shaft including a pen shaft section and a pen tip section which are independent of each other, the pen shaft section and the pen tip section are both made of insulating material and have a number of conductive particles evenly distributed thereon, and also including an insulating charging ring sleeve, the insulating charging ring sleeve is sleeved on the pen tip section and axially limited, the pen tip and the tail end of the pen tip section both extend out of the insulating charging ring sleeve, the tail end of the pen tip section is connected to the head end of the pen shaft section, and the combination constitutes the pen shaft, the signal output end of the control chip is electrically connected to the tail end of the pen shaft section, the control chip and the pen shaft are arranged in the pen barrel, the insulating charging ring sleeve is detachably assembled at the opening of the pen barrel, and the combination constitutes an active touch pen.

[0009] The pen shaft section and the pen tip section are made of plastic or rubber through injection molding.

[0010] The conductive particles are carbon black particles, conductive metal particles or polymer conductive particles.

[0011] The insulating power-concentrating ring sleeve is in a truncated cone shape, the tip of the pen tip section extends out from the small diameter end of the truncated cone-shaped insulating power-concentrating ring sleeve, and the tail end of the pen tip section extends out from the large diameter end of the truncated cone-shaped insulating power-concentrating ring sleeve.

[0012] The pen tip section is a secondary step section, the large diameter section of the secondary step section is set to a hemispherical or 3 / 4 spherical body to form a pen tip, and the insulating power-gathering ring sleeve is set on the small diameter section of the secondary step section.

[0013] One or more limiting protrusions are arranged on the outer periphery of the small diameter section of the pen tip section, and a corresponding limiting cavity is arranged on the inner wall of the insulating power-concentrating ring sleeve. The insulating power-concentrating ring sleeve forms axial and circumferential limiting through the cooperation of the limiting cavity and the limiting protrusions.

[0014] The insulating power-gathering ring sleeve is sleeved on the small-diameter section of the pen tip section and is axially limited by the shaft shoulder of the secondary step section and the shaft end face of the pen shaft section.

[0015] The head end of the pen shaft section is provided with a connecting hole, and the tail end of the pen tip section is engaged in the connecting hole by plugging or threading to form a detachable connection.

[0016] The insulating electricity-gathering ring sleeve is threadedly matched or plugged into the opening of the pen barrel.

[0017] It also includes a pressure sensor, which is installed in the pen barrel and electrically connected to the control chip. The pressure sensor is in contact with the tail end of the pen shaft section.

[0018] The above technical solution has the following beneficial effects:

[0019] 1. The active touch pen includes a pen barrel, a pen holder, and a control chip, wherein the pen barrel is used to protect the pen holder and the control chip, and the pen holder is used to click the touch panel and send out electrical signals to meet the needs of fine touch. The pen holder includes a pen holder section and a pen tip section that are independent of each other. The pen holder section and the pen tip section are both made of insulating materials and are evenly distributed with a number of conductive particles. The pen tip section and the pen holder end of this structure have a material with moderate hardness to improve the smoothness of touch operation and can also meet the needs of electrical signal transmission. It also includes an insulating polyelectric ring sleeve, which is sleeved on the pen tip section and axially limited. The pen tip and the tail end of the pen tip section both extend out of the insulating polyelectric ring sleeve, and the tail end of the pen tip section is connected to the head end of the pen holder section to form a pen holder, that is, the pen tip section can be replaced separately, and the pen holder (including the pen tip section and the pen holder section) is isolated from the user's hand by the pen barrel and the insulating polyelectric ring sleeve, thereby increasing the current intensity of the pen holder and reducing the interference of the external environment on the signal. The signal output end of the control chip is electrically connected to the tail end of the pen barrel section. Obviously, the control chip is provided with a power supply. The control chip and the pen barrel are arranged in the pen barrel. The insulating power-concentrating ring sleeve is detachably assembled at the opening of the pen barrel to form an active stylus. The insulating power-concentrating ring sleeve is installed at the opening of the pen barrel to form the outer shell of the stylus. The pen tip section is fixedly assembled in the insulating power-concentrating ring sleeve, and the pen barrel section is fixedly assembled on the pen tip section. The position of the control chip is limited by the pen barrel section and the internal space of the pen barrel to ensure the normal use of the stylus. The pen tip section of the entire stylus is a consumable part, which is easy to install and disassemble, and can effectively reduce the maintenance and use costs of the stylus.

[0020] 2. The pen barrel section and the pen tip section are made of plastic or rubber through injection molding, so that the pen tip section has moderate hardness, which meets the use requirements of different consumers for the stylus pen and has low processing cost.

[0021] 3. The insulating charging ring is in a truncated cone shape, the tip of the pen tip section extends out from the small diameter end of the truncated cone-shaped insulating charging ring, and the tail end of the pen tip section extends out from the large diameter end of the truncated cone-shaped insulating charging ring, thereby ensuring the fixing strength of the pen tip section, improving the stability of the pen tip section, and thereby improving the touch accuracy of the stylus.

[0022] 4. The pen tip section is a two-stage stepped section, and the large diameter section of the secondary stepped section is set to a hemispherical or 3 / 4 spherical shape to form a pen tip, thereby improving the smoothness of the pen tip section on the touch screen and the service life of the pen tip section. The insulating polyelectric ring sleeve is set on the small diameter section of the secondary stepped section. The insulating polyelectric ring sleeve can also limit the matching depth of the pen tip section and the pen shaft section, thereby ensuring the length of the pen shaft composed of the pen tip section and the pen shaft section, and meeting the requirements of precise assembly.

[0023] 5. It also includes a pressure sensor, which is installed in the pen barrel and electrically connected to the control chip. The pressure sensor is in contact with the tail end of the pen shaft section. The pen shaft has a slight deformation along the axial direction. The pen tip pressure of the pen shaft can be detected by the pressure sensor and converted into a pressure value by the control chip, and then the output signal is adjusted to meet the needs of precise touch.

[0024] Further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an explosion diagram of the utility model;

[0026] Figure 2 for Figure 1 A cross-sectional view of

[0027] Figure 3 It is an assembly diagram of the utility model.

[0028] In the accompanying drawings, 1 is a pen holder, 2 is a pen shaft, 21 is a pen shaft section, 22 is a pen tip section, 221 is a limiting protrusion, 3 is a control chip, 4 is an insulating polyelectric ring sleeve, 41 is a limiting cavity, and 5 is a pressure sensor. DETAILED DESCRIPTION

[0029] See also Figures 1 to 3, which is a specific embodiment of an active stylus. The active stylus includes a pen barrel 1, a pen body 2, and a control chip 3, wherein the pen barrel is made of plastic or other non-conductive materials, such as ceramics. The improvement point of the utility model is not the chip, so the existing stylus chips are applicable to the utility model, such as the x3 smart chip, etc. The pen body 2 includes a mutually independent pen body section 21 and a pen tip section 22, and the pen body section 21 and the pen tip section 22 are both made of insulating materials. Specifically, the pen body section 21 and the pen tip section 22 are made of plastic or rubber by injection molding. The material is usually selected according to different uses, and a number of conductive particles are evenly distributed. The conductive particles are usually carbon black particles. Of course, other conductive particles, such as conductive metal particles or polymer conductive particles, can also be used to meet the needs of signal transmission. In this embodiment, the pen tip section 22 is a two-stage step section, and the large diameter section of the two-stage step section is set to a hemispherical or 3 / 4 spherical body to form a pen tip, and the pen body section is a conventional columnar structure. It also includes an insulating charging ring sleeve 4, which is sleeved on the pen tip section 22 and axially limited. The tip and tail end of the pen tip section 22 both extend out of the insulating charging ring sleeve 4. In this embodiment, the insulating charging ring sleeve is truncated cone-shaped, the tip of the pen tip section 22 extends out from the small diameter end of the truncated cone-shaped insulating charging ring sleeve 4, and the tail end of the pen tip section 22 extends out from the large diameter end of the truncated cone-shaped insulating charging ring sleeve 4. In order to ensure the connection stability between the pen tip section and the insulating charging ring sleeve, as well as the convenience of installation and disassembly, one or more limiting protrusions 221 are arranged on the outer periphery of the small diameter section of the pen tip section 22, which are usually designed to be symmetrically distributed. A corresponding limiting cavity 41 is arranged on the inner wall of the insulating charging ring sleeve 4, and the insulating charging ring sleeve 4 cooperates with the limiting cavity 41 and the limiting protrusion 221 to form axial and circumferential limitations. The tail end of the pen tip section 22 is connected to the head end of the pen shaft section 21, and the combination constitutes the pen shaft 2. Specifically, a connection hole is provided at the head end of the pen shaft section 21, and the tail end of the pen tip section 22 is plugged in or threadedly fitted in the connection hole to form a detachable connection. The insulating power-gathering ring sleeve assembled on the small diameter section of the pen tip section is axially limited by the axial shoulder of the secondary step section and the axial end face of the pen shaft section 21. The signal output end of the control chip 3 is electrically connected to the tail end of the pen shaft section 21. Obviously, the control chip is provided with a power supply to power it. The control chip can be designed to be sleeved on the tail end of the pen shaft section to form a detachable overall structure. The control chip 3 and the pen shaft 2 are arranged in the pen barrel 1, and the insulating power-gathering ring sleeve 4 is detachably assembled at the opening of the pen barrel, and the combination constitutes an active touch pen. Specifically, the insulating power-gathering ring sleeve 4 is threadedly fitted or plugged in at the opening of the pen barrel 1.

[0030] In order to further improve the refined touch requirements of the stylus pen, a pressure sensor 5 is also installed in the pen barrel. The pressure sensor 5 is electrically connected to the control chip 3. The pressure sensor 5 is in contact with the tail end of the pen shaft section 21. When the tip of the pen shaft is subjected to pressure, the pen shaft can transmit a slight deformation to the pressure sensor, thereby generating a signal and transmitting it to the control chip to convert it into a pressure value, thereby adjusting the electrical signal output by the control chip.

Claims

1. An active touch pen, comprising a pen holder (1), a pen shaft (2), and a control chip (3), characterized in that: The pen holder (2) comprises a pen holder section (21) and a pen tip section (22) which are independent of each other. The pen holder section (21) and the pen tip section (22) are both made of insulating materials and have a plurality of conductive particles evenly distributed thereon. It also includes an insulating power-gathering ring sleeve (4), which is sleeved on the pen tip section (22) and axially limited, and the pen tip and the tail end of the pen tip section (22) both extend out of the insulating power-gathering ring sleeve (4). The tail end of the pen tip section (22) is connected to the head end of the pen shaft section (21), and the combination forms the pen shaft (2). The signal output end of the control chip (3) is electrically connected to the tail end of the pen shaft section (21). The control chip (3) and the pen holder (2) are arranged in the pen barrel (1), and the insulating power-gathering ring sleeve (4) is detachably assembled at the opening of the pen barrel, and the combination forms an active touch pen.

2. The active stylus pen according to claim 1, characterized in that: The pen shaft section (21) and the pen tip section (22) are made of plastic or rubber through injection molding.

3. The active stylus pen according to claim 1, characterized in that: The conductive particles are carbon black particles, conductive metal particles or polymer conductive particles.

4. The active stylus pen according to claim 1, characterized in that: The insulating power-gathering ring sleeve (4) is in a truncated cone shape, the tip of the pen tip section (22) protrudes from the small-diameter end of the truncated cone-shaped insulating power-gathering ring sleeve (4), and the tail end of the pen tip section (22) protrudes from the large-diameter end of the truncated cone-shaped insulating power-gathering ring sleeve (4).

5. The active stylus pen according to claim 1, characterized in that: The pen tip section (22) is a secondary step section, the large diameter section of the secondary step section is set to be a hemispherical or 3 / 4 spherical body to form a pen tip, and the insulating power-gathering ring sleeve (4) is sleeved on the small diameter section of the secondary step section.

6. The active stylus pen according to claim 5, characterized in that: One or more limiting protrusions (221) are arranged on the outer periphery of the small diameter section of the pen tip section (22), and a corresponding limiting cavity (41) is arranged on the inner wall of the insulating power-gathering ring sleeve (4). The insulating power-gathering ring sleeve (4) forms axial and circumferential limiting through the cooperation of the limiting cavity (41) and the limiting protrusions (221).

7. The active stylus pen according to claim 5, characterized in that: The insulating power-gathering ring sleeve (4) is sleeved on the small-diameter section of the pen tip section and is axially limited by the shaft shoulder of the secondary step section and the shaft end face of the pen shaft section (21).

8. The active stylus pen according to claim 1, characterized in that: The head end of the pen shaft section (21) is provided with a connection hole, and the tail end of the pen tip section (22) is inserted or threadedly engaged in the connection hole to form a detachable connection.

9. The active stylus pen according to claim 1, characterized in that: The insulating power-gathering ring sleeve (4) is threadedly matched or plugged into the opening of the pen holder (1).

10. The active stylus pen according to claim 1, characterized in that: It also comprises a pressure sensor (5), which is installed in the pen barrel (1) and is electrically connected to the control chip (3), and the pressure sensor (5) is in contact with the rear end of the pen shaft section (21).

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