TW201704940A - Pressure detection structure of stylus and detecting method thereof - Google Patents

Abstract

A pressure detection structure of stylus and detecting method thereof are provided in the present disclosure. The detection structure is inclusive of a pen shaft, pressure sensor and a means of pressure transmission. A pressed deformable portion is arranged on an end of the pen shaft, a chamber is formed in the pen shaft, and the chamber is connected into the pressed deformable portion. The pressure sensor is arranged in the chamber corresponding to and at interval with the pressed deformable portion. The means of pressure transmission is arranged in the chamber for connecting and moving between pressure sensor and the pressed deformable portion. While the pressed deformable portion is pressed to deform by a force, the force is transmitted to the pressure sensor via the means of pressure transmission, and the pressure sensor delivers a continual signal according to pressure variances.

Description

Stylus pressure sensing structure and method thereof

The invention relates to an input device, in particular to a pressure sensing structure of a stylus and a method thereof.

Press, the traditional stylus, such as passive capacitive pen, usually only simulates the role of the finger; for example, when drawing on the touchpad, if you need to use the combination button, you must use the other finger to press the corresponding The buttons (such as the Shift button on the keyboard) to provide different drawing functions in conjunction with the hands.

However, although the conventional stylus can use different functions according to the above-mentioned buttons of other input devices, it is also inconvenient because the hands must be used in combination, and in particular, it cannot be completed by one hand, so it still needs to be improved.

In view of the above, the present inventors have made an effort to improve and solve the above-mentioned shortcomings, and have devoted themselves to research and cooperate with the application of the theory, and finally proposed a present invention which is reasonable in design and effective in improving the above-mentioned defects.

The main purpose of the present invention is to provide a pressure sensing structure of a stylus and a method thereof, which are capable of causing different touch pressure paths to the stylus by one hand when the stylus is operated by a human hand. Further, it is converted into a continuous signal by sensing its touch pressure channel as a judgment for controlling whether the other functions of the stylus are turned on or not.

In order to achieve the above object, the present invention provides a pressure sensing structure of a stylus, comprising a pen, a pressure sensor, and a pressure linkage device; wherein the pen holder is provided with a pressure deformation portion at one end, and the pen holder is further provided. a cavity is provided, and the cavity is connected to the inner surface of the touch deformation portion, the pressure sensor is disposed in the cavity and is opposite to the distance between the touch deformation portions, and the pressure linkage device is disposed in the cavity and is used in the touch deformation portion Cooperating with the pressure sensor; when the pressure deformation portion is deformed by external force, the external force can be transmitted to the pressure sensor through the pressure linkage device, and the pressure sensor senses the external force. Pressure changes produce a continuous signal.

In order to achieve the above object, the present invention provides a pressure sensing method for a stylus. The stylus is provided with a touch deformation portion at one end, and a cavity is disposed in the pen holder, and the cavity is connected to the touch deformation portion. The inner surface is connected to the pressure deformation device and the pressure sensor by a pressure linkage device. When the pressure deformation portion is deformed by external force, the external force can be transmitted through the pressure linkage device. On the pressure sensor, a continuous signal is generated by the pressure change caused by the external force sensed by the pressure sensor.

The detailed description of the present invention and the accompanying drawings are to be understood by the accompanying claims .

Please refer to FIG. 1 and FIG. 2 , which are respectively a perspective view of a first embodiment of the stylus of the present invention and a partial schematic view of an internal structure thereof. The invention provides a pressure sensing structure of a stylus and a method thereof, the stylus mainly comprising a rod 1, a pressure sensor 2, and a pressure linkage device 3; wherein:

The pen holder 1 can be used for hand holding for easy writing or manipulation. Generally, the pen holder 1 can have a pen head 10 at one end, and a touch deformation portion 11 is disposed on the pen head 10 to form a touch pen with a touch function such as a passive capacitive pen. As shown in FIG. 2, the present invention further provides a cavity 12 in the pen holder 1 which is communicated from the inside of the pen holder 1 to the inner surface of the contact deformation portion 11; and in the embodiment of the present invention The cavity 12 penetrates the inside of the pen head 10 and leads to the inner surface of the contact deformation portion 11.

The pressure sensor 2 is disposed in the cavity 12 of the pen holder 1 and disposed opposite to the pitch of the contact deformation portion 11 of the sheath 1 . In more detail, in the embodiment, the pressure sensor 2 can be a Force-Sensing Resistor (FSR) for contacting a circuit board 20 disposed in the cavity 12 of the sheath 1 . After the pressure sensor 2 contacts the circuit board 20, the circuit board 20 can receive the impedance change of the pressure sensing resistor to a predetermined predetermined value, thereby generating a continuous signal to provide the opening or not of other functions of the stylus. Judgment; for example: can automatically determine that the Shift key on the keyboard is pressed, then the user only needs to continue to operate the stylus with one hand, and can continue to operate with the function of the Shift key, without having to go with the other hand Operate the Shift key on the keyboard to press or not. It can be understood that the continuous signal can be connected to a system device such as a smart phone, a tablet, a tablet computer, a notebook computer or a desktop computer through a general wired transmission method, and can also be transmitted through, for example, a Bluetooth device. The wireless transmission mode is connected to each of the above system devices.

The pressure linkage device 3 is disposed in the cavity 12 of the pen holder 1 to provide the external force after the external pressure of the touch deformation portion 11 of the pen holder 1 (ie, the pressure applied by the user after operating the stylus) The pressure sensor 2 is transmitted to the pressure sensor 2 and causes the pressure sensor 2 to sense the pressure change caused by the external force. Therefore, the pressure linkage device 3 is used for interlocking between the pressure deformation portion 11 and the pressure sensor 2. In the present embodiment, the pressure linkage device 3 includes a push rod 30, a cushion 31, and an elastic member 32. The cushion system 31 is coupled to the back of the pressure sensor 2 (for example, a pressure sensing resistor). The elastic member 32 is coupled between the push rod 30 and the cushion 31. An end of the push rod 30 facing the touch deformation portion 11 is provided with an attaching end 300. The attaching end 300 can cooperate with the inner surface of the contact deformation portion 11 to form a curved surface, and is attached to the touch deformation portion. The inner surface of the push rod 30 is provided with a sleeve end 301 for the elastic member 32 to be sleeved at the other end. The elastic member 32 can be a compression spring coupled to the cushion 31 to connect the pressure sensor 2 to the circuit board 20.

Accordingly, as shown in FIG. 3, when the user operates the stylus, the touch deformation portion 11 of the sheath 1 is subjected to a continuous external force (ie, indicated by an arrow) by the user's pressure, so that the pressure is deformed. The portion 11 is deformed by the compression of the external force; at this time, the deformed pressure deformation portion 11 pushes the push rod 30 of the pressure linkage device 3 inwardly to drive the push rod 30 to press the elastic member 32 and interlock the pressure. The sensor 2 makes a continuous contact with the circuit board 20, wherein the cushion 31 enables the pressure sensor 2 as a pressure sensing resistor to more uniformly induce a change in impedance for the circuit board 20 to receive the impedance change to a predetermined value. After that, a continuous signal is generated to provide a judgment of whether the other functions of the stylus are turned on or not, so that the invention can increase the opening of other functions of the stylus in a pressure sensing manner, and can be conveniently operated by one hand. .

Furthermore, as shown in FIG. 4, it is a partial schematic view of the internal structure of the second embodiment of the stylus of the present invention. The pressure sensing structure of the stylus of the present embodiment and the method thereof are not described in the same manner as the foregoing embodiment, and only the differences between the embodiment and the foregoing embodiment will be described in detail below. The other embodiment of the pressure linkage device 3 is mainly provided; the pressure linkage device 3 can also be a medium sealed in the cavity 12 of the pen holder 1 . The medium is, for example, a gas, and the cavity 12 is an airtight space. Therefore, as shown in FIG. 5, when the contact deformation portion 11 of the sheath 1 is subjected to a continuous external force (ie, indicated by an arrow) by the user's pressing force, the deformed contact deformation portion 11 causes the inside of the cavity 12. The airtight space is reduced, so that the pressure of the gas sealed in the cavity 12 (ie, the pressure linkage device 3 of the embodiment) is increased, so that the pressure sensor 2 can detect a change in the pressure value in the cavity 12 for the change. After receiving the pressure change to a predetermined value, the circuit board 20 generates a continuous signal to determine whether the other functions of the stylus are turned on or not, which is the same as the above object and effect of the present invention.

According to the second embodiment, the sealed air pressure in the cavity 12 of the pen holder 1 causes an internal pushing effect. Therefore, in the embodiment, the cavity 12 is a pressure releasing member disposed in the pen holder 1. 4 is sealed and the pressure sensor 2 and its circuit board 20 are pushed against the pressure relief member 4 toward the cavity 12. The pressure release member 4 can include a piston 40 and a reset element 41. The piston 40 seals the cavity 12, and the reset element 41 pushes the piston 40 toward the cavity 12. A baffle 13 is disposed in the pen holder 1 , and the baffle 13 abuts against the reset element 41 to limit the position of the pressure release member 4 in the pen holder 1 . For example, the reset element 41 can be a compression spring, and the piston 40 and the baffle 13 are located at opposite ends of the reset element 41, respectively. When the air pressure in the cavity 12 is increased, the pressure release member 4 is pushed; and when the air pressure in the cavity 12 is restored (ie, the user releases the external force applied to the contact deformation portion 11), the pressure release member 4 will push the pressure sensor 2 and its circuit board 20 back to the initial position to balance the pushing effect in the sheath 1 due to the closed air pressure.

Therefore, the pressure sensing structure of the stylus of the present invention and the method thereof can be obtained by the above-described structural composition.

In summary, the present invention can achieve the intended use purpose, and solve the lack of the conventional, and because of the novelty and progress, fully meet the requirements of the invention patent application, and apply according to the patent law, please check and The patent in this case is granted to protect the rights of the inventor.

However, the above description is only a preferred embodiment of the present invention, and thus the scope of the present invention is not limited thereto, and the equivalent techniques and means, etc., which are used in the description of the present invention and the contents of the drawings, are the same. It is included in the scope of the present invention and is combined with Chen Ming.

<present invention>

1‧‧‧ pen

10‧‧‧ pen head

11‧‧‧Tensile deformation

12‧‧‧ cavity

13‧‧‧Baffle

2‧‧‧ Pressure Sensor

20‧‧‧ boards

3‧‧‧ Pressure linkage

30‧‧‧Put

00‧‧‧ Attached end

301‧‧‧Set

31‧‧‧ cushion

32‧‧‧Flexible components

4‧‧‧Pressure release member

40‧‧‧Piston

41‧‧‧Reset components

1 is a perspective view of a first embodiment of a stylus according to the present invention.

2 is a partial schematic view showing the internal structure of the first embodiment of the stylus according to the present invention.

FIG. 3 is a schematic view showing the action of the first embodiment of the stylus according to the present invention after being subjected to an external force.

4 is a partial schematic view showing the internal structure of a second embodiment of the stylus according to the present invention.

FIG. 5 is a schematic view showing the action of the second embodiment of the stylus according to the present invention after being subjected to an external force.

1‧‧‧ pen

10‧‧‧ pen head

11‧‧‧Tensile deformation

12‧‧‧ cavity

2‧‧‧ Pressure Sensor

20‧‧‧ boards

3‧‧‧ Pressure linkage

30‧‧‧Put

300‧‧‧ Attached end

301‧‧‧Set

31‧‧‧ cushion

32‧‧‧Flexible components

Claims (12)

A pressure sensing structure of a stylus, comprising: a pen having a touch deformation portion at one end thereof, wherein a cavity is further disposed in the pen bar, and the cavity is connected to the inner surface of the touch deformation portion; And a pressure linkage device disposed in the cavity for interlocking between the pressure deformation portion and the pressure sensor; When the pressure deformation portion is deformed by an external force, the pressure deformation portion transmits the external force to the pressure sensor through the pressure linkage device, and the pressure sensor senses a pressure change caused by the external force. Continuous signal. The pressure sensing structure of the stylus according to claim 1, wherein the end of the pen has a head, the touch deformation portion is located on the pen head, and the cavity passes through the pen head to the Touch the inner surface of the deformation. The pressure sensing structure of the stylus according to claim 1, wherein the pressure sensor is a pressure sensing resistor and is in contact with a circuit board disposed in the cavity. The pressure sensing structure of the stylus according to claim 3, wherein the pressure linkage device comprises a push rod, a cushion coupled to the back of the pressure sensor, and a push rod coupled to the push rod And an elastic member formed between the cushion, and the elastic member interlocks the pressure sensor to make contact with the circuit board. The pressure sensing structure of the stylus according to the fourth aspect of the invention, wherein the push rod is provided with an attaching end toward one end of the touch deformation portion, and the attaching end is attached to the touch deformation On the inside of the department. The pressure sensing structure of the stylus according to claim 5, wherein the attaching end is matched with the inner surface of the touch deformation portion to form a curved surface. The pressure sensing structure of the stylus according to claim 5 or 6, wherein the other end of the push rod is provided with a sleeve end for enclosing the elastic member. The pressure sensing structure of the stylus according to claim 1, wherein the cavity is an airtight space, and the pressure linkage device is a medium sealed in the cavity. The pressure sensing structure of the stylus according to claim 8, wherein the cavity is sealed by a pressure releasing member, and the pressure sensor is pushed toward the cavity by the pressure releasing member. Arrived. The pressure sensing structure of the stylus according to claim 9, wherein the pressure releasing member comprises a piston that seals the cavity, and a reset element that pushes the piston toward the cavity. The pressure sensing structure of the stylus according to claim 10, wherein the pen holder is provided with a baffle that abuts against the reset element. A pressure sensing method for a stylus, the stylus is provided with a touch deformation portion at one end, and a cavity is further disposed in the stylus, the cavity is connected to the inner surface of the touch deformation portion; a pressure linkage device is coupled between the pressure deformation portion and a pressure sensor, and when the pressure deformation portion is deformed by an external force, the external force can be transmitted to the pressure linkage device. On the pressure sensor, a pressure change caused by the external force is sensed by the pressure sensor to generate a continuous signal.