KR-102963849-B1 - electronic pen

Abstract

An electronic pen suitable for use with a foldable terminal is provided, in addition to having a waterproof function. The space between the first sealing member (22) and the second sealing member (26) of the electronic pen body part (2) is sealed by the inner body (1) being in close contact with the first sealing member (22) and the second sealing member (26), thereby realizing a waterproof function in that part. Furthermore, the electronic pen body part (2) and the inner body (1) are integrated and can move together. By doing so, countermeasures for the foldable terminal can be easily and sufficiently established.

Inventors

• 오가타 마모루
• 가네다 다케노리
• 니노미야 겐이치
• 아라이 다카유키
• 다나카 고헤이

Assignees

• 가부시키가이샤 와코무

Dates

Publication Date

20260513

Application Date

20211004

Priority Date

20201106

Claims (6)

1. An electronic pen body part having a first sealing member covering the periphery of the tip side and a second sealing member provided along the outer edge at a position separated from the tip side toward the rear end, As a tubular body, it has an inner body in which the first sealing member and the second sealing member are in close contact with the inner wall surface by inserting the tip side of the electronic pen main body part, and An elastic body holder having an elastic body on the tip side, and An electronic pen characterized by having an electronic pen body holder that accommodates a predetermined portion from the rear end of the electronic pen body in the front end direction, and whose rear end surface contacts the elastic body and is connected to the elastic body holder so as to be movable in the axial direction.
2. delete
3. In claim 1, An electronic pen characterized by having an outer housing that accommodates the portion comprising the inner body, the electronic pen body part, the electronic pen body part holder, and the elastic body holder.
4. In claim 1, At the rear end of the second sealing member of the electronic pen body, a circuit board and a half-pipe shaped board holder having an open upper surface for housing the circuit board are connected. An electronic pen characterized in that the upper surface of the circuit board is covered with resin.
5. In claim 1, An electronic pen characterized by having a coil formed between the first sealing member and the second sealing member of the electronic pen body.
6. In claim 1, The device is provided with an outer housing that accommodates the portion comprising the inner body, the electronic pen body part, the electronic pen body part holder, and the elastic body holder. A circuit board equipped with a press switch is connected to the rear end of the second sealing member of the electronic pen body part, and The above electronic pen body holder is provided with a rod-shaped presser part that extends a hollow portion toward the pen tip so as to pass through the upper part of the press switch from a fixed portion at the rear end. At a position on the side of the outer housing corresponding to the press switch of the circuit board, an opening is provided, and an operating part is provided in the opening. An electronic pen characterized in that the press switch of the above circuit board is operated via the operating part and the presser part.

Description

electronic pen The present invention relates to an electronic pen that enables the input of information by indicating coordinates to a position detection device mounted on an electronic device, such as a tablet PC (Personal Computer), for example. For example, in electronic devices such as high-performance mobile phone terminals called tablet PCs (Personal Computers) or smartphones, there are devices that enable instruction input using an electronic pen in order to perform more detailed drawing input through an onboard position detection device. Considering the usage patterns of tablet PCs and high-performance phone terminals, which are often used while on the go, it is being considered to make electronic pens more compact and suitable for portability. In addition, electronic devices such as tablet PCs and high-performance telephone terminals, as well as electronic pens, are increasingly being used in environments susceptible to water damage, such as outdoors during rainy weather or near bodies of water like seas, rivers, lakes, swamps, and swimming pools. For this reason, the need for waterproofing measures for electronic pens, along with the electronic devices themselves, is becoming increasingly important. Waterproofing measures for electronic pens are disclosed, for example, in Patent Documents 1 to 3 described below. Patent Document 1 discloses a technique for performing total sealing, which shields all important components of an electronic pen, such as coils or circuit boards. Patent Document 2 discloses a technique for adding a waterproof function by filling a hollow portion within an inner housing, which houses components that realize the electronic pen function, with resin. Patent Document 3 discloses a technique for preventing the intrusion of water, etc., from the outside by providing a waterproof elastic member (cap member or sealing member) at the pen tip side or circuit board connection part inside the housing. FIG. 1 is a perspective view illustrating the internal configuration of an electronic pen of an embodiment. FIG. 2 is a perspective view illustrating an electronic pen of an embodiment. FIG. 3 is a cross-sectional view illustrating the configuration of the pen tip side of an electronic pen of an embodiment. FIG. 4 is a cross-sectional view for explaining the state of an electronic pen of an embodiment before and after excessive pressure is applied. Hereinafter, an embodiment of an electronic pen according to the present invention will be described with reference to the drawings. For example, an electronic pen of the electromagnetic induction type is equipped with a resonant circuit formed by connecting a coil and a capacitor, and performs position indication or notification of writing pressure by transmitting and receiving a magnetic field between itself and a position detection device. For this reason, in the case of an electronic pen of the electromagnetic induction type, a coil is provided at the tip of the pen; however, since the electrical characteristics change if this coil part gets wet with water or the like, it becomes necessary to take waterproofing measures for the said coil part. Furthermore, in the case of active capacitive electronic pens, a coil for battery charging is often installed, making it necessary to implement waterproofing measures for the coil portion. As such, there are various types of electronic pens, and the need to devise waterproofing measures for each is increasing. The present invention is applicable to various electronic pens that have locations requiring waterproofing measures. For the sake of simplicity, the following description will use the case where the present invention is applied to an electromagnetic induction type electronic pen as an example. FIG. 1 is a perspective view for explaining the internal configuration of an electronic pen of an embodiment. As shown in FIG. 1, the electronic pen of this embodiment is composed of four main parts: an inner body (1), an electronic pen main body part (2), a main body part holder (3), and an elastic body holder (4). As shown in FIG. 1 (A), the inner body (1) is a tubular body with a tapered end at the front end, and the interior is hollow. A front opening (11) is provided at the front end, and a rear opening (12) is provided at the rear end. The upper and lower surfaces of the inner body (1) are formed in a flat shape, and a fitting projection (13a) is provided on the rear end side of the upper surface. Additionally, although not visible in FIG. 1 (A), a fitting projection (13b) is provided on the rear end side of the lower surface at a position opposite to the fitting projection (13a). The electronic pen body part (2) is a part that realizes the electronic pen function. As shown in (B) of FIG. 1, the exterior of the electronic pen body part (2) consists of a core body (21), a first sealing member (22), a coil (24), a pressure detection part (25), a second sealing member (26), a substrate holding part (2