KR20200124142A - Hinge structure for foldable device - Google Patents

Abstract

The present invention relates to a hinge structure for a foldable device with a smart pen receiving part and, more specifically, to a hinge structure for a foldable device with a smart pen receiving part capable of improving portability of the smart pen and the foldable device by accommodating the smart pen in the hinge structure for the foldable device. The present invention is the hinge structure for the foldable device provided between first and second display panels, connecting the first and second display panels, and implementing folding and unfolding operations of the first and second display panels and includes the smart pen receiving part provided at the boundary between first and second display panels and having the inner diameter corresponding to the outer diameter of the smart pen.

Description

Hinge structure for foldable devices with a smart pen receiving part {HINGE STRUCTURE FOR FOLDABLE DEVICE}

The present invention relates to a hinge structure for a foldable device having a smart pen receiving portion, and more particularly, by accommodating the smart pen in the hinge structure for the foldable device, the portability of the smart pen and the foldable device can be improved. It relates to a hinge structure for a foldable device having a smart pen receiving unit provided with a smart pen receiving unit.

A smartpen is a pen that writes like a general pen, but can save input as a digital file. First, there are two methods. First, the camera attached to the pen sees the pattern on the paper while writing on the paper where the pattern is recognized, and records the position by recognizing the position. Second, there is a method of recognizing the position by using an ultrasonic method by placing a receiver other than a pen. Such smart pens are actively used with the development of smart phones and tablet PCs.

In addition, in recent years, research and development of a foldable display device, a bendable display device, and a rollable display device using the advantages of a flexible display panel that can be bent or folded are in progress. Such display devices can be applied to various fields such as portable electronic devices, wearables, televisions, and monitors.

The conventional technology (Publication Patent No. 10-2018-0015515) is a language learning method and system thereof using a smart pen, and in more detail, a word or sentence that a user wants to learn using a smart pen is printed on a paper on which a specific code is printed. According to writing, the smart pen transmits coordinate values corresponding to the movement trajectory of the smart pen to the user device, the user device recognizes the text written by the user based on the coordinate values, and the user device recognizes the handwriting. It is a system that can learn foreign languages such as English or Chinese more efficiently by using a foreign language word learning system using a smart pen by providing feedback to the user based on the text.

However, in the case of the conventional technology, there is a problem that it is inconvenient to carry a smart pen while carrying a smart phone.

The present invention has been conceived to solve the above problems, and an object of the present invention is to improve the portability of a smart pen having a size relatively smaller than that of a foldable device.

Another object of the present invention is to provide a hinge structure for a foldable device accommodating a smart pen of various shapes.

In addition, the present invention is a smart pen accommodating unit to accommodate all of the smart pen to make the hinge structure for a foldable device and the appearance of the foldable device beautiful, or by accommodating the smart pen accommodating unit to partially expose the smart pen, The purpose is to easily withdraw the pen.

The present invention for the purpose of solving the above problems has the following configurations and features.

The present invention provides a hinge structure for a foldable device that is provided between the first and second display panels, connects the first and second display panels, and implements a folding and unfolding operation of the first and second display panels. In this case, it includes a smart pen accommodating portion provided at the boundary between the first and second display panels and having an inner diameter corresponding to the outer diameter of the smart pen.

In addition, the smart pen accommodating part may have a cross-sectional shape of any one of a circle, an oval, a semicircle, a square, and a polygon.

In addition, the depth of the smart pen accommodating portion is configured to correspond to or smaller than the length of the smart pen to accommodate all or part of the smart pen.

The present invention having the above configuration and characteristics has an effect that the portable device for a foldable device is provided with a smart pen accommodating portion, thereby improving portability of the smart pen together with the foldable device.

In addition, the present invention has an effect that the cross-sectional shape of the smart pen receiving portion is composed of any one of a circle, an oval, a semicircle, a square, and a polygon, and thus can accommodate a smart pen of various shapes.

In addition, the present invention makes the hinge structure for a foldable device and the appearance of the foldable device beautiful when the smartpen accommodation part has a depth corresponding to or smaller than the length of the smart pen, and the smartpen accommodation part accommodates all the smart pens, When the smart pen accommodating part is accommodated to partially expose the smart pen, it has an effect that the smart pen accommodated in the smart pen accommodating part can be easily withdrawn.

1 is a plan cross-sectional view of a hinge structure for a foldable device having a smart pen receiving portion in a folded state according to an embodiment of the present invention.
2 is a plan cross-sectional view of a hinge structure for a foldable device having a smart pen receiving portion in a folded state according to another embodiment of the present invention.
3A is a perspective view illustrating an unfolded state in a state in which a pen is accommodated in a hinge structure for a foldable device having a smart pen receiving portion.
3B is a perspective view for explaining a semicircular smartpen receiving part in a folded state.
4 is a view for explaining a protective film on the inner surface of the smart pen receiving portion.

The present invention will be described in detail in the text of the bar, implementation (態樣, aspect) (or embodiment) that can apply various changes and can have various forms. However, this is not intended to limit the present invention to a specific form of disclosure, and it should be understood that all changes, equivalents, and substitutes included in the spirit and scope of the present invention are included.

The terms used in the present specification are only used to describe specific embodiments (sun, 態樣, aspect) (or examples), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as ~include~ or ~consist~ are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of being added.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

The ~1~, ~2~, etc. described in the present specification will only be referred to to distinguish different constituent elements, and are not limited to the order of manufacture, and the names in the detailed description and claims of the invention It may not match.

Throughout the present specification, when a part is said to be "connected" with another part, it is not only "directly connected", but also "electrically connected" or "indirectly connected" with another element interposed therebetween. "Including the case.

The present invention relates to a hinge structure for a foldable device having a smart pen accommodating part. Hereinafter, for convenience of explanation, a hinge structure for a foldable device having a smart pen accommodating part according to an embodiment of the present disclosure is referred to as a'foldable device hinge. It will be referred to as'structure'.

1 is a plan cross-sectional view of a hinge structure for a foldable device having a smart pen receiving portion in a folded state according to an embodiment of the present invention.

Referring to FIG. 1, the hinge structure 1 for a foldable device is provided between the first display panel 2 and the second display panel 3, and includes a first display panel 2 and a third display panel. They are interconnected, and the first display panel 2 and the second display panel 3 are folded (refer to FIG. 1) and unfolded.

In more detail, the first display panel 2 and the second display panel 3 are unfolded as the hinge structure 1 for a foldable device rotates about the smart pen receiving part 11 described later as a central axis. Implement Illustratively, referring to FIG. 1, the first display panel 2 rotates by up to 180 degrees in a counterclockwise direction with the smart pen receiving part 11 described later as a central axis (3 o'clock based on FIG. 1 ). The first display panel 2 and the second display panel 3 are kept in an open state by rotating counterclockwise from the direction to a maximum of 9 o'clock (the second display panel 3 will be described later). The first display panel 2 and the second display panel 2 and the second are rotated clockwise by a maximum of 180 degrees with the receiving part 11 as the central axis (clockwise rotation from 3 o'clock to 9 o'clock based on FIG. 1). It goes without saying that the display panels 3 maintain the mutually open state). The hinge structure (1) for a foldable device is in the above-described direction with the smart pen receiving portion (11) as a central axis so that the first display panel (2) and the second display panel (3) are folded in an open state. It rotates in the opposite direction.

2 is a plan cross-sectional view of a hinge structure for a foldable device having a smart pen receiving portion in a folded state according to another embodiment of the present invention.

1 and 2, the hinge structure 1 for a foldable device is connected between the first display panel 2 and the second display panel 3 as well as the hinge structure of the hinge structure (see FIG. 1). The hinge structure 1 for a foldable device may be formed of a liquid crystal panel (see FIG. 2) that is elastically deformed to be foldable. That is, in the specification of the present invention, the hinge structure 1 for a foldable device is preferably understood as a concept including various embodiments that can be folded and unfolded.

1 and 2, the hinge structure 1 for a foldable device is provided at the boundary between the first display panel 2 and the second display panel 3, and corresponds to the outer diameter of the smart pen P. It includes a smart pen receiving portion 11 having an inner diameter. Here, the outer diameter of the smart pen P is the outer diameter of the cross-sectional area centered on the length direction of the smart pen P, and the diameter of the smart pen P in the direction of 2 o'clock to 8 o'clock ( Outer diameter) can mean length. In addition, the inner diameter of the smart pen accommodating part 11 may mean the diameter (inner diameter) of the smart pen accommodating part 11 when referring to FIGS. 1 and 2. That is, the inner diameter of the smart pen accommodating part 11 is provided larger than the outer diameter of the smart pen P so that the smart pen P can be inserted.

As described above, the hinge structure 1 for a foldable device includes the smart pen accommodating part 11 for accommodating the smart pen P, thereby making it easy to carry the smart pen P and the foldable device. In more detail, the smart pen P is relatively small in size compared to the foldable device, and may be lost. Therefore, by accommodating the smart pen (P) in the smart pen accommodating part 11 of the hinge structure (1) for a foldable device, the smart pen (P) and the foldable device are set to facilitate management of the smart pen (P). There is an advantage of losing. In addition, the smart pen (P) itself has a predetermined volume, as the smart pen (P) is accommodated in the smart pen receiving unit 11, the volume required to carry the smart pen (P) and the foldable device ( There is an advantage in that the volume of the bag or pocket) is reduced, making it easy to carry.

FIG. 3A is a perspective view illustrating an unfolded state in a state in which a pen is accommodated in a hinge structure for a foldable device having a smart pen accommodation part, and FIG. 3B is a perspective view illustrating a semicircular smart pen accommodation part in a folded state.

Referring to FIGS. 1 to 3B, the smartpen accommodating part 11 may have a cross-sectional shape of a circular shape (see FIG. 1 ), an oval shape, a semicircular shape (see FIG. 3B ), a rectangle, and a polygon.

Here, the cross-sectional shape of the smart pen receiving part 11 may mean a flat cross-sectional shape (a cross-section centered at 12 o'clock-6 o'clock with reference to FIGS. 3A and 3B) in FIGS. 3A and 3B.

The smart pen accommodating part 11 is preferably formed in a cross-sectional shape corresponding to the cross-sectional shape of the smart pen P, but is not limited thereto. That is, as described above, the smart pen receiving portion 11 may be formed in any one of a circle, an ellipse, a semicircle, a quadrangle, and a polygon while maintaining a state whose inner diameter is greater than the outer diameter of the smart pen P. The cross-sectional shape of the smart pen accommodating part 11 may have various shapes other than the above-described shape.

When the cross-sectional shape of the smart pen receiving part 11 is formed corresponding to the cross-sectional shape of the smart pen P, the volume of the inner space of the smart pen receiving part 11 can be reduced as much as possible, as a result, the hinge structure for a folder device ( 1) There is an advantage that the size can be reduced as much as possible. In addition, the smart pen accommodating part 11 can accommodate a smart pen P having various cross-sectional shapes while maintaining a state whose inner diameter is greater than the outer diameter of the smart pen P, and in this case, a hinge for a foldable device There is an advantage that the usability of the structure (1) is increased. In addition, as the smart pen receiving portion 11 is formed in one of a circle, an ellipse, a semicircle, a quadrangle, and a polygon, there is an advantage in that the appearance of the foldable device can be reduced as much as possible and various external appearances can be formed. Referring exemplarily with reference to FIG. 3B, the cross-sectional shape of the smartpen receiving part 11 is configured in a semicircular shape instead of a circular shape (refer to the left external shape in FIGS. 1 and 2), and the external shape of the foldable device is reduced to its volume. It can be manufactured in a square shape with the maximum reduction.

1 to 3B, the depth of the smart pen accommodating part 11 is configured to correspond to the length of the smart pen P (see FIG. 3B) or small (see FIG. 3A), It can accommodate all (see Fig. 3B) or part (see Fig. 3A).

Here, the depth of the smart pen receiving portion 11 is the length in the length direction of the smart pen receiving portion 11, and may mean the length in the 12 o'clock-6 o'clock direction based on FIG. 3A, and The length may also mean a length in the 12 o'clock-6 o'clock direction based on FIG. 3A.

When the depth of the smart pen receiving unit 11 is configured to correspond to the length of the smart pen (P), and when accommodating all of the smart pen (P), the aesthetics of the foldable device in the state receiving the smart pen (P) There is an advantage of being beautiful, and the depth of the smart pen receiving portion 11 is configured to be smaller than that of the smart pen (P), and when accommodating a part of the smart pen (P), the state accommodated in the smart pen receiving portion 11 There is an advantage that the smart pen (P) can be easily separated from the smart pen receiving portion (11).

4 is a view for explaining a protective film on the inner surface of the smart pen receiving portion.

1 to 4, the inner surface of the smart pen receiving unit 11 is always exposed to the external environment due to its characteristic, and the smart pen P is repeatedly drawn in and withdrawn into the inside of the smart pen receiving unit 11 Therefore, damage, warping, corrosion, etc. may occur due to impact, cuts, invasion, and the like, and thus it needs to be appropriately protected.

The present invention introduces a protective film provided on the inner surface of the smart pen receiving unit 11 as a protection means for the inner surface of the smart pen receiving unit 11. Specifically, referring to Figure 4, the present invention is a porous layer (G1) provided at a predetermined interval on the inner surface of the smart pen receiving portion 11, the heating layer (G2) provided on the porous layer (G1), and It is characterized in that it may further include a protective layer G including a protective layer G3 covering the outer surface of the cover 54 including the porous layer G1 and the heating layer G2.

Specifically, the porous layer (G1) is a configuration that adds buffering properties to the protective film (G), based on 100 parts by weight of expanded polystyrene, 5 parts by weight of antimony trioxide (Sb2O3), 7 parts by weight of melamine polyphosphate, and 10 parts by weight of expanded graphite. Includes parts by weight.

For each composition, expanded polystyrene has a disadvantage in that it is vulnerable to flame retardancy, but has been used because of the advantages of excellent insulation performance and low manufacturing cost. Each composition of the porous layer (G1) is determined based on 100 parts by weight of expanded styrene.

And antimony trioxide (Sb2O3) is a metal oxide obtained from luminous stone, and has been used for the advantage of having superior flame retardancy compared to other flame retardant materials. Such antimony trioxide preferably contains 5 parts by weight, relative to 100 parts by weight of expanded styrene. If used in excess of this, radical compounds generated during combustion may be harmful to the human body, and economical efficiency is achieved due to relatively high cost. Is lowered.

And melamine polyphosphate (Melamine Polyphosphate) is a kind of polyphosphorylated water, added for the function of blocking oxygen access by forming a glass coating. As a result of the repeated experiment, the optimal amount of use for forming an appropriate thickness of the glass coating film is to include 7 parts by weight relative to 100 parts by weight of expanded styrene.

And expanded graphite (Expanded Graphite) is added as a graphite compound that adds a flame-retardant function by generating carbides during combustion, and the preferred amount is that it contains 10 parts by weight.As a result of repeated experiments, the weight ratio of the melamine polyphosphate is 0.7: When used as 1, the flame retardant effect was maximized, and as a result, it was concluded that it is desirable to include 10 parts by weight.

The porous layer G1 is prepared through a predetermined curing operation after dispersing the components in water as a solvent. Here, matters related to the curing of the porous layer G1 are out of the scope of the present invention, and follow the known techniques and the general common sense of the skilled person.

Next, the heating layer (G2) is provided on the upper portion of the porous layer (G1), it receives sunlight and self-heats, so that the fusion and kneading between the porous layer (G1) and the protective layer (G3) can be achieved by itself. It is added to ensure that the kneading time is longer than 24 hours at room temperature, so it is a configuration provided to shorten the kneading time to within 30 minutes by providing a temperature condition of about 40 to 60°C. This heating layer (G2) includes 5 parts by weight of manganese dioxide and 3 parts by weight of silica gel, based on 100 parts by weight of tetrachlorogold(III) acid.

For each composition, tetrachlorogold(III) acid (HAuCl4) is a pale yellow crystal obtained by dissolving gold in aqua regia or dissolving gold(III) chloride in hydrochloric acid. It is preferable that those having a particle diameter of 15 to 30 nm are used. The following composition constituting the heating layer (G2) is determined based on 100 parts by weight of tetrachloroauric (III) acid.

In addition, manganese dioxide (MnO2) is a compound in which manganese and supernatant are combined, and is added to facilitate dispersion of the heating layer (G2) and to optimize the utilization area of the solar wavelength. Titanium, chromium, nickel, copper, etc. Among the metals, it was adopted because of its high emissivity and radiant energy efficiency in the far infrared region. Such manganese dioxide is prepared by sintering at about 1000°C in the presence of oxygen, and the smaller the particle diameter, the greater the induction heating effect, so it is preferable to use an average particle diameter of 10 to 100 nm, and the amount of the manganese dioxide is preferably used as a result of repeated experiments. It is preferably 5 parts by weight as seen.

And silica gel (Silica Gel) is added to sustain the exothermic effect of the heating layer (G2) and shorten the exothermic saturation time, and it was confirmed that the optimum heating efficiency was shown when 3 parts by weight were included as a result of repeated experiments.

The heating layer (G2) is made by adding a small amount of citric acid after heating an aqueous solution of tetrachlorogold (III) acid at about 100° C. for 10 minutes, and then mixing and dispersing manganese dioxide and silica gel in the above mixing ratio. Then, it is manufactured through a predetermined drying process. Here, the specific content of the drying process is to follow the known technology and the general common sense of a person skilled in the art.

Next, the protective layer G3 is a basic configuration of the protective layer G, and covers and protects the entire protective portion including the porous layer G1 and the heating layer G2. This protective layer (G3) is based on 100 parts by weight of silica bonded water containing 5% by weight of tetraethoxysilane and 5% by weight of methyltriethoxysilane and the balance of water, 10 parts by weight of pozzolan, 3 parts by weight of surfactant, bentonite 1 part by weight, 40 parts by weight of hydroxyethyl acrylate, and 3 parts by weight of ethylenediamine tetraacetate are included.

For each composition, silica bonded water is added for the geopolymer reaction of pozzolan, and it is preferable that a large amount of silica (SiO) is contained. The silica bonded water contains 5% by weight of tetraethoxysilane (TEOS) and 5% by weight of methyltriethoxysilane (MTES) and the remaining amount of water based on the total weight of the bonded water, and tetraethoxysilane is a stable silica molecule. It forms a network structure, and methyltriethoxysilane increases the flexibility of the network. When tetraethoxysilane is added in less than the composition ratio, the hardness of the protective layer (G3) is lowered, and when it is added in excess of the composition ratio, the silica precursor content is increased, and there is a risk of cracking during drying. In addition, when methyltriethoxysilane is used in less than the above composition ratio, the flexibility decreases, and when it is used in excess of the above composition ratio, the hardness of the protective layer (G3) decreases. The following composition constituting the protective layer (G3) is based on 100 parts by weight of silica bonded water.

In addition, pozzolan is a major binder in the geopolymer reaction, and any of natural pozzolan such as volcanic ash, artificial pozzolan such as slag fine powder, fly ash, silica fume, etc. may be selected. It is preferable to use 10 parts by weight of such pozzolan, and assuming that it is not excessive, the composition ratio may be exceeded, but when the composition ratio is less than the composition ratio, it is difficult to develop strength.

In addition, a surfactant is added to improve workability, and bentonite is added as a viscoelastic modifier to prevent dropping, thereby performing the function of a thixotropic agent. These surfactants and bentonite are sufficient if commercially available products are added in the above composition ratio with reference to known techniques and common sense. If the composition is out of the above composition ratio, the flowability is excessive or less than the reference value.

And hydroxyethyl acrylate (Hydroxyethylacrylate) is added as an adhesion promoter, and was particularly adopted because it has the advantage of excellent curability. As a result of repeated experiments, the preferred amount is 40 parts by weight, and when used in less than the composition ratio, the adhesion promoting effect is insignificant, and when used in excess of the composition ratio, the volatility increases and the toxicity becomes strong.

In addition, ethylenediaminetetracetate is added as an adsorption enhancing agent, and as a result, adhesion is improved by enhancing the adsorption power during initial construction of the protective film (G). As a result of repeated experiments, it was confirmed that the amount used to express the optimal adsorption enhancing effect was 3 parts by weight.

The protective layer G3 is prepared through a predetermined drying and curing process after mixing and stirring the components by putting the components into a stirrer.

As an example of the construction of the protective film (G), a porous layer (G1), a heating layer (G2), and a protective layer (G3) are provided in the order of the test block, and then left for 1 hour in an environment irradiated with sunlight. Then, the kneading process was carried out, and the protective film G was formed by curing. As a result of performing a cross-cut test, scratching test, combustion test through flame spraying, and internal invasion test through water spraying on this protective film (G), the peeling rate was less than 1%, and the failure rate was It was less than 5%, no combustion of the porous layer G1 occurred, and no internal invasion was detected.

The present invention described above with reference to the accompanying drawings can be variously modified and changed by a person skilled in the art, and such modifications and changes should be construed as being included in the scope of the present invention.

Hinge structure for foldable devices: 1
Smartpen Receptacle: 11
First display panel: 2
Second display panel: 3
Smartpen: P

Claims (4)

In the hinge structure for a foldable device provided between the first and second display panels, connecting the first and second display panels, and implementing a folding and unfolding operation of the first and second display panels,
A hinge structure for a foldable device including a smart pen accommodating portion provided at a boundary between the first and second display panels and having an inner diameter corresponding to an outer diameter of the smart pen.
The method according to claim 1,
The hinge structure for a foldable device, characterized in that the cross-sectional shape of the smart pen accommodating part is composed of one of a circle, an oval, a semicircle, a square, and a polygon.
The method according to claim 2,
The hinge structure for a foldable device, characterized in that the depth of the smart pen accommodating portion is configured to correspond to or smaller than the length of the smart pen to accommodate all or part of the smart pen.
The method of claim 3,
The smart pen accommodating part includes a protective film including a porous layer provided on the inner surface at predetermined intervals, a heating layer provided on the porous layer, and a protective layer covering the entire inner surface including the porous layer and the heating layer,
The porous layer contains 5 parts by weight of antimony trioxide (Sb2O3), 7 parts by weight of melamine polyphosphate, and 10 parts by weight of expanded graphite, based on 100 parts by weight of expanded polystyrene,
The heating layer includes 5 parts by weight of manganese dioxide and 3 parts by weight of silica gel, based on 100 parts by weight of tetrachlorogold(III) acid,
The protective layer comprises 10 parts by weight of pozzolan, 3 parts by weight of surfactant, 1 part by weight of bentonite, based on 100 parts by weight of silica bonded water containing 5% by weight of tetraethoxysilane, 5% by weight of methyltriethoxysilane and the balance of water. , A hinge structure for a foldable device comprising 40 parts by weight of hydroxyethyl acrylate and 3 parts by weight of ethylenediamine tetraacetate.

Images