KR20160058624A - A combined structure of electronic apparatus for wearing on the wrist and electronic apparatus - Google Patents

Abstract

The present invention relates to a combined structure of an electronic apparatus to be worn on a wrist and an electronic apparatus. To achieve this, according to the present invention, a combined structure of an electronic apparatus to be worn on a wrist has a body and a band unit coupled to the body, and comprises: a coupling groove formed at one side of the body, wherein a first terminal portion is formed at one side of an internal side surface; and a coupling unit formed at one side of the band unit, and having a second terminal portion at one side of an external side surface thereof, wherein the second terminal portion is in contact with the first terminal portion in a state of being coupled to the coupling groove.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wing-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a coupling structure of an electronic device for wrist-worn type and an electronic device.

As the demand of consumers changes due to the high performance of digitalization of electronic products, market demand is changing due to the development of power supply devices with high capacity due to thinness and light weight and high energy density.

Power supply devices such as lithium ion secondary batteries, lithium ion polymer batteries, supercapacitors (electric double layer capacitors), and water capacitors with high energy density and large capacity have been developed in order to meet consumer needs.

In recent years, demand for mobile electronic devices such as portable telephones, notebooks, and digital cameras is continuously increasing. Especially, attention is focused on flexible mobile electronic devices including rolled type displays, flexible electronic paper, flexible liquid crystal display devices, and flexible organic light emitting diodes This has recently increased. Accordingly, a power supply for a flexible mobile electronic device should also be required to have flexible characteristics.

Specifically, a watch-phone that combines the functions of a mobile phone into a form of a wristwatch, especially flexible mobile electronic devices, has appeared, and a flexible power supply unit has been incorporated into the watchband of a watch phone.

However, when a flexible power supply device is used as a watch strap, there is a problem in that it is not easy to make electrical contact with the main body of the watch phone at the same time because of flexibility of the terminal of the flexible power supply device.

Korea Patent Publication No. 2014-0059737 (May 16, 2014)

An object of the present invention is to provide a joining structure of a wrist wearable electronic device which can be easily electrically coupled to a main body while using a flexible battery as a band of a wrist.

According to an aspect of the present invention, there is provided a wing-type electronic device comprising: a coupling groove formed at one side of a main body and having a first terminal portion formed on one side of an inner side; And a coupling portion formed on one side of the band portion and having a second terminal portion on one side of the outer side thereof, the coupling portion being in contact with the first terminal portion in a state of being coupled to the coupling groove.

Further, the engaging groove may have an opening that is opened in the outward direction, and the engaging portion may be formed into a bar shape extending so as to have a cross section corresponding to the opening.

In addition, an opening / closing member that can slide in a direction away from or close to the main body so as to be able to open / close the opening may be provided in the coupling groove.

Further, it may include an elastic member provided between the main body and the opening and closing member for pressing the opening and closing member in the opening direction.

Further, the end face of the opening and closing member may have a shape corresponding to the opening.

The outer peripheral portion of the band portion may be formed with a sealing portion for sealing the contact portion between the band portion and the coupling groove so that foreign matter does not flow into the coupling groove in a state where the band portion is coupled to the coupling groove.

Further, the sealing portion may be formed as a protruding portion protruding outwardly with respect to the outer peripheral surface of the band portion.

Further, the sealing portion may be formed of a ring-shaped member coupled to the outer periphery of the band portion, and the ring-shaped member may be formed of an elastic material.

In addition, a fitting groove corresponding to the sealing portion may be formed on the opening side of the coupling groove.

A first fastening member may be provided on the other side of the inner surface of the engaging groove, and a first corresponding fastening member engageable with the first fastening member may be provided on the other side of the outer surface of the engaging portion.

In addition, a second fastening member may be provided on the other side of the main body, and a second corresponding fastening member may be provided on the other side of the band portion to be coupled to the second fastening member.

According to another aspect of the present invention, there is provided an electronic device, comprising: a main body having at one side thereof an engaging groove having a first terminal portion formed on an inner side thereof; And a band portion having a flexible battery portion and a coupling portion having a second terminal portion on one side of the outer side, the first portion being in contact with the first terminal portion while being coupled to the coupling groove, A wrist wearable electronic device having a built-in portion is provided.

In addition, the flexible battery part includes a casing, an electrode assembly, and an electrolytic core, and the casing and the electrode assembly have patterns for contraction and relaxation at the time of bending, and the patterns of the casing and the electrode assembly may include coinciding parts.

Also, the electrode assembly may include a positive electrode having a positive electrode active material layer formed on one surface or both surfaces of the positive electrode current collector; A negative electrode comprising a negative electrode active material layer formed on one side or both sides of the negative electrode current collector; And a separator, wherein the anode, the cathode, and the separator have a pattern for exporting and relaxing at the time of bending, and may include a portion corresponding to the pattern of the casing.

The separator may include a nanofiber web layer containing polyacrylonitrile nanofibers on one side or both sides of the nonwoven fabric layer.

Further, the pattern is formed continuously or discontinuously, and the pattern may include at least one selected from a prism pattern, a semicircular pattern, a wavy pattern, a polygonal pattern, an embossed pattern, and a mixed pattern thereof.

According to another aspect of the present invention, there is provided a coupling structure for a wrist wearable electronic device including a main body and a band portion coupled to the main body, the coupling structure comprising: a coupling groove formed on one side of the main body, And an engaging portion formed on one side of the band portion and having a second terminal portion on one side of the outer side surface that is in contact with the first terminal portion in a state of being coupled to the engaging groove, And the joining portion has a bar shape extending so as to have a cross section corresponding to the opening.

The coupling structure of the wrist wearable electronic device according to an embodiment of the present invention is characterized in that the flexible electrode terminal portion of the flexible battery portion embedded in the band portion is coupled to the coupling portion so that the electrode terminal portion of the flexible battery portion can be easily Lt; / RTI >

In addition, since the band portion can be detachably attached to the main body by the coupling member provided in the main body and the band portion, the flexible battery portion of the band portion other than the battery portion provided in the main body can be used as the auxiliary battery.

1 is a view showing a flexible battery unit used in an electronic device for a wrist according to an embodiment of the present invention.
2 is an enlarged cross-sectional view showing a detailed configuration of a flexible battery unit according to an embodiment of the present invention.
3 is an overall perspective view illustrating various patterns applied to an electrode assembly and a casing in a flexible battery unit according to an embodiment of the present invention.
FIGS. 4 to 7 are schematic views showing various patterns of a pattern in a flexible battery according to an embodiment of the present invention.
8 is a schematic view showing a state in which a flexible battery unit according to an embodiment of the present invention is applied to a wrist-wearing electronic apparatus.
9 is a perspective view illustrating an electronic device worn on a wrist according to an embodiment of the present invention.
10 is a perspective view illustrating a coupling structure of a wrist wearable electronic device according to an embodiment of the present invention.
11 is a perspective view illustrating a main body of an electronic device for a wrist according to an embodiment of the present invention.
12 is a perspective view illustrating a band portion of an electronic device for a wrist according to an embodiment of the present invention.
13A to 13D are cross-sectional views illustrating a coupling structure of a wrist wearable electronic device according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

FIG. 1 is a view showing a flexible battery unit used in a wrist electronic device according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view showing a detailed structure of a flexible battery unit according to an embodiment of the present invention, FIGS. 4 to 7 illustrate various types of patterns in a flexible battery according to an exemplary embodiment of the present invention. FIG. 4 is a perspective view of a flexible battery according to an exemplary embodiment of the present invention. FIG. 8 is a schematic view showing a state in which a flexible battery unit according to an embodiment of the present invention is applied to a wrist-wearing electronic apparatus.

The wrist electronic device of the present invention may include the body part 100 and the band part 200 and the flexible battery part 10 may be incorporated in the band part 200. [

The flexible battery unit 10 will be briefly described with reference to Figs. 1 to 3. Fig.

1 and 2, the flexible battery unit 10 according to an embodiment of the present invention includes an electrode assembly 20 and a casing 30.

The electrode assembly 20 is encapsulated with an electrolytic solution inside the casing 30 and may have a separation membrane 26 formed between the anode 22 and the cathode 24.

The positive electrode 22 includes a positive electrode collector 22a and a positive electrode active material 22b and the negative electrode 24 includes a negative electrode collector 24a and a negative electrode active material 24b and the positive electrode or negative electrode includes a separator 26, And can be integrated with the separation membrane 26.

Here, the negative electrode current collector 24a and the positive electrode current collector 22a may be formed with a negative electrode terminal 28a and a positive electrode terminal 28b respectively extending from the body.

At this time, the separation membrane 26 may include a nanofiber web layer 26b on one side or both sides of the nonwoven fabric layer 26a.

Here, the nanofiber web layer 26b may be a nanofiber containing at least one selected from the group consisting of polyacrylonitrile nanofiber and polyvinylidene fluoride nanofiber.

Preferably, it may be composed of only polyacrylonitrile nanofibers to ensure the formation of radioactive and uniform pores in the formation of the nanofiber web layer 26b. The polyacrylonitrile nanofibers of the nanofiber web layer 26b may have an average diameter of 0.1 to 2 mu m, and preferably 0.1 to 1.0 mu m.

This is because if the average diameter of the nanofibers is less than 0.1 mu m, the separation membrane may not have sufficient heat resistance. If the average diameter is more than 2 mu m, the mechanical strength of the separation membrane is excellent, but the elasticity of the separation membrane may be reduced.

In addition, the nonwoven fabric constituting the nonwoven fabric layer may be selected from the group consisting of cellulose, cellulose acetate, polyvinyl alcohol (PVA), polysulfone, polyimide, polyetherimide, polyamide, (PEO), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyurethane (PU), polymethyl methacrylate methylmethacrylate) and polyacrylonitrile may be used.

The nonwoven fabric layer may further include an inorganic additive. The inorganic additive may be selected from the group consisting of SiO, SnO, SnO ₂ , PbO ₂ , ZnO, P ₂ O ₅ , CuO, MoO, V ₂ O ₅ , B ₂ O ₃ , Si _{3 N 4, CeO 2, Mn} 3 O 4, Sn 2 P 2 O 7, Sn 2 B 2 O 5, Sn 2 BPO 6, TiO 2, BaTiO 3, Li 2 O, LiF, LiOH, Li 3 N, BaO , Na ₂ O, Li ₂ CO ₃ , CaCO ₃ , LiAlO ₂ , SiO ₂ , Al ₂ O ₃ and PTFE.

The inorganic particles as the inorganic additive may have an average particle diameter of 10 to 50 nm, preferably 10 to 30 nm, and more preferably 10 to 20 nm.

In addition, the average thickness of the separator may be 10 to 100 mu m, preferably 10 to 50 mu m.

If the average thickness of the separator is less than 10 mu m, the separator may be too thin to ensure long-term durability of the separator due to repeated bending and / or spreading of the battery. If the average thickness exceeds 100 mu m, It is preferable to have an average thickness within the range.

The nonwoven fabric layer may be formed to have an average thickness of 10 to 30 탆, preferably 15 to 30 탆, and the nanofiber web layer may have an average thickness of 1 to 5 탆.

The anode current collector and / or the anode current collector may be made of a thin metal foil and may be formed in a strip shape having a predetermined length and may be formed of copper, aluminum, stainless steel, nickel, titanium, chromium, manganese, iron, cobalt, zinc, molybdenum , Tungsten, silver, gold, and combinations thereof.

The positive electrode active material includes a positive electrode active material capable of reversibly intercalating and deintercalating lithium ions. Typical examples of such a positive electrode active material include LiCoO2, LiNiO2, LiMnO2, LiMn2O4, or LiNi1-x-yCoxMyO2 (0 & 1, 0? Y? 1, 0? X + y? 1, and M is a metal such as Al, Sr, Mg, or La). However, in the present invention, it is also possible to use other kinds of cathode active materials in addition to the cathode active material.

The negative electrode active material includes a negative electrode active material capable of intercalating and deintercalating lithium ions. Examples of the negative electrode active material include carbon-based negative electrode active material of crystalline or amorphous carbon, carbon fiber, or carbon composite material, tin oxide Lithium, a lithium alloy, and a mixture thereof. However, the present invention is not limited to the kind of the negative electrode active material.

Meanwhile, the positive electrode active material and the negative electrode active material may contain a PTFE (Polytetrafluoroethylene) component in order to prevent peeling from the positive electrode collector or the negative electrode collector and to prevent cracking of the positive electrode active material layer and the negative electrode active material layer.

The casing member 30 is formed of a plate-like member having a predetermined area and is for protecting the electrode assembly 20 from external force by accommodating the electrode assembly 20 and the electrolyte therein.

To this end, the casing member 30 is provided with a pair of first casing members 32 and a second casing member 34, and the electrolyte solution and the electrode assembly 20 contained therein are sealed And prevents leakage to the outside.

The outer sheath 30 may be sealed by an adhesive, the outer sheath 32 and the outer sheath 34 being made of two members and then being in contact with each other, or may be made of one member, It should be noted that the remainder that is folded in half along the direction and then abutted may be sealed through the adhesive.

At this time, the exterior material 30 is provided with a pattern 36 for shrinking and relaxing when bending at least one surface thereof, and at least a part of the pattern 36 is formed to facilitate contraction and relaxation of the exterior material 30 in the twisting direction Pattern 36 is included.

That is, the pattern 36 is for shrinking and relaxing in the longitudinal direction of the jacket 30 at the time of bending. The pattern 36 may be repeatedly arranged along the longitudinal direction of the facing material 30.

More specifically, the crests and troughs of the pattern 36 are formed parallel to a straight line parallel to the width direction of the facings 30.

At this time, the pattern 36 may be formed in parallel with the adjacent crests and valleys at equal intervals, or may be formed in parallel with the intervals of the adjacent crests or valleys at different intervals, Gaps may be provided in a combined form.

Accordingly, the flexible battery unit 10 according to the embodiment of the present invention facilitates shrinkage and relaxation in the longitudinal direction during the bending process through the pattern 36.

Therefore, even if the repeatedly bending operation of the case 30 is repeated, the fatigue applied to the case 30 itself can be reduced, and the electrode assembly 20 disposed inside the case 30 can also be bent Thereby being protected from the load generated during the operation.

In addition, the pattern formed on the casing member 30 may be formed on the entire surface of the casing member 30 or may be partially formed.

The electrode assembly 20 may be provided in a flexible plate shape. However, the electrode assembly 20 may have the same pattern as that of the pattern 36 formed on the casing 30 for shrinking and relaxing during bending, as in the case 30 .

That is, the anode 22, the cathode 24, and the separator 26, which constitute the electrode assembly 20, may have the same pattern as the pattern 36 formed on the casing 30 for shrinking and relaxing during bending have.

Here, the pattern 28 formed on the electrode assembly 20 is formed parallel to a straight line parallel to the width direction as shown in Fig. It will be appreciated that the pattern 36 formed on the casing 30 and the pattern 28 formed on the electrode assembly 20 need only be matched with each other.

4 to 7, the crests and valleys may be continuous or discontinuous, and the cross-sectional shape of the crests and valleys may be a linear pattern, a prism pattern, a semicircular pattern, a wave pattern A pattern, a polygonal pattern, and a mixed pattern thereof.

Meanwhile, the flexible battery unit 10 described above functions to supply power to the main body (100 of FIG. 8), and functions as an auxiliary battery for assisting the main battery provided in the main body 100 But may also be used as the main battery of the main body 100.

8, the flexible battery unit 10 includes a band unit 200 covering the surface of the jacket 30, and at one side of the band unit 200, At least one terminal portion 210 may be provided.

At this time, the band portion 200 can be made of a flexible soft material.

Accordingly, the flexible battery unit 10 according to an embodiment of the present invention can be used as an accessory such as a bracelet, a wrist strap, a wristband, etc., and can be used as a fashion article when charging of an external device is unnecessary.

A structure of a wrist wearable electronic device in which the flexible battery unit 10 having the above-described configuration is used will be described later in detail with reference to FIG. 9 to FIG.

FIG. 9 is a perspective view illustrating a wrist-wearing electronic apparatus according to an embodiment of the present invention, FIG. 10 is a perspective view illustrating a coupling structure of a wrist-wearable electronic apparatus according to an embodiment of the present invention, FIG. 12 is a perspective view illustrating a band portion of an electronic device for a wrist according to an embodiment of the present invention. FIG. 12 is a perspective view illustrating a main body of a wrist electronic device according to an embodiment of the present invention.

9 and 10, the wrist wearable electronic device may include a body portion 100 and a band portion 200 coupled to the body 100.

A coupling groove 110 may be formed at one side of the main body 100 and a coupling portion 210 coupled to the coupling groove 110 may be protruded at one side of the band portion 200.

The coupling groove 110 may have an opening 112 opened outwardly and the coupling portion 210 may have a bar shape extending to have a cross section corresponding to the opening 112.

11, the coupling groove 110 formed at one side of the main body 100 may include a first terminal portion 120, and the first terminal portion 120 may include a coupling groove 110, And may be formed on one of the upper surface, the bottom surface, and both side surfaces of the engaging groove 110.

Also, the first terminal portion 120 may be provided adjacent to the opening 112.

The first terminal portions 120 may be provided on a pair of inner sides of the coupling groove 110. One of the pair of first terminal portions 120 may be a negative terminal, The first terminal portion may be an anode electrode.

An opening and closing member 130 for opening and closing the opening 112 may be provided in the coupling groove 110. Specifically, the opening and closing member 130 may be installed to be slidable in a direction have.

In addition, the end face of the opening and closing member 130 may have a shape corresponding to the opening 112.

One end of the elastic member 140 may be connected to one end of the coupling groove 110, that is, a surface of the elastic member 140 that is in contact with the main body 100.

The other end of the elastic member 140 may be connected to one end of the opening and closing member 130 to apply an elastic force to the opening and closing member 130. Specifically, when the engaging portion 210 is separated from the engaging groove 110, the opening and closing member 130 can be returned to its original position by the elastic force of the elastic member 140 to close the opening 112.

As shown in FIG. 12, the coupling portion 210 may be formed to protrude from one side of the band portion 200 in a bar shape, and may be inserted into the coupling groove 110 through the opening 112.

The second terminal part 220 may be provided on one side of the outer surface of the coupling part 210 to be in contact with the first terminal part 120 provided in the coupling groove 110 in a state of being coupled to the coupling groove 110 .

That is, the second terminal portion 220 may be provided on one of the outer surfaces of the coupling portion 210 corresponding to the first terminal portion 110 so as to be in contact with the first terminal portion 110.

The second terminal part 220 may be provided on the outer surface of the coupling part 210. The second terminal part of one of the pair of second terminal parts 220 may be a cathode electrode, The second terminal portion may be a bipolar electrode.

Specifically, the cathode electrode of the first terminal portion 120 is connected to the anode electrode of the second terminal portion 220, and the anode electrode of the first terminal portion 120 is connected to the cathode electrode of the second terminal portion 220, 100 and the band portion 200 can be electrically connected to each other.

The sealing portion 230 may be formed on the outer peripheral portion of the coupling portion 210 to seal the contact portion between the coupling portion 210 and the coupling groove 110.

Specifically, the sealing portion 230 may be formed as a protruding portion protruding outwardly with respect to the outer peripheral surface of the coupling portion 210, or may be formed as a ring-shaped member of an elastic material that can be coupled to the outer peripheral portion of the coupling portion 210 .

A fitting groove 114 corresponding to the sealing portion 230 may be formed on the opening 112 side of the coupling groove 110 corresponding to the sealing portion 230 of the coupling portion 210. [

When the engaging portion 210 is engaged with the engaging groove 110, the sealing portion 230 is fitted into the engaging groove 114 so that the contact portion between the engaging portion 210 and the engaging groove 110 is It can be in a sealed state.

Accordingly, the foreign matter does not flow into the coupling groove 110 when the coupling portion 210 is coupled to the coupling groove 110 by the sealing portion 230.

When the coupling portion 210 of the band portion 200 is coupled to the coupling groove 110 of the main body 100, a fastening member may be provided for accurate fastening of the band portion 200 and the main body 100.

The first coupling member 150 may be provided on the inner surface of the coupling groove 110 and the first coupling member 150 coupled to the first coupling member 150 may be formed on the outer surface of the coupling portion 210. [ 240 may be provided.

Although the first fastening member 150 and the first fastening member 240 are illustrated as being attached to the coupling groove 110 and the coupling portion 210 respectively, no. For example, the main body 100 and the band unit 200 can be freely installed on the surfaces corresponding to each other.

The body 100 may include a second fastening member 160 and the band portion 200 may include a second fastening member 250 coupled to the second fastening member 160.

Here, the second fastening member 160 and the second fastening member 250 may be formed in a shape other than the first fastening member 150 and the first corresponding fastening member 240 provided in the coupling groove 110 and the coupling portion 210, The coupling groove 110 and the coupling portion 210 may be additionally provided at portions where the coupling groove 110 and the coupling portion 210 face each other.

The band part 200 may be detachably attached to the main body 100. The band part 200 is provided on the other side of the main body 100 and the band part 200.

The first fastening member 150 and the first fastening member 240 and the second fastening member 160 and the second corresponding fastening member 250 may be coupled in a forced fit manner, Or can be freely configured in any manner as long as it is a fastening type in which the main body 100 and the band portion 200 can be securely fastened.

The second fastening member 160 and the second fastening member 250 are provided on the other side of the main body and the other side of the band portion so that the band portion 200 can be detachable from the main body 100.

Therefore, the band part 200 in which the flexible battery part 10 is incorporated can be used as an auxiliary battery in addition to the battery part provided in the main body 100.

13A to 13D are cross-sectional views illustrating a coupling structure of a wrist wearable electronic device according to an embodiment of the present invention.

13A, the coupling groove 110 of the main body 100 and the coupling portion 210 of the band portion 200 are positioned to face each other.

13B, the engaging portion 210 protruding in a bar shape on the band portion 200 is in contact with one surface of the opening and closing member 130 provided in the opening 112 of the engaging groove 110 The opening and closing member 130 can be pressed in the direction of the elastic member 140.

The coupling portion 210 may be inserted into the coupling groove 110 by pressing the opening and closing member 130 and the second terminal portion 220 of the coupling portion 210 may be inserted into the coupling groove 110 To be electrically connected to the first terminal portion 120 of the first terminal 120.

Accordingly, when the band portion 200 is coupled to the main body 100 through the coupling portion 210, the first terminal 120 and the second terminal 220 corresponding to each other are electrically connected to each other, Is supplied with power from the flexible battery unit (10 in FIG. 1) built in the band unit 200 and receives power necessary for operation or is charged from the flexible battery unit (10 in FIG. 1).

The sealing part 230 formed on the coupling part 210 is coupled to the fitting groove 114 formed in the coupling groove 110 so that the coupling part 210 is engaged with the coupling groove 110, Thereby preventing foreign matter from flowing into the body 110.

13D, the first corresponding coupling member 240 of the coupling part 210 is coupled to the first coupling member 150 of the coupling groove 110, so that the electronic device can be worn on the wrist, And the band portion can be combined.

Therefore, the coupling structure of the wrist-wearable type electronic device can easily make the electrode terminal portion of the flexible battery portion electrically coupled with the electrode terminal of the main body by connecting the flexible electrode terminal portion of the flexible battery portion built in the band portion to the coupling portion.

In addition, since the band portion can be detachably attached to the main body by the coupling member provided in the main body and the band portion, the flexible battery portion of the band portion other than the battery portion provided in the main body can be used as the auxiliary battery.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: Flexible battery part 20: Electrode assembly
22: anode 24: cathode
26: separator 30: exterior material
32: first exterior material 34: second exterior material
36: pattern 100:
110: coupling groove 112: opening
114: fitting groove 120: first terminal portion
130: opening and closing member 140: elastic member
200: band part 210:
220: second terminal portion 230: sealing portion

Claims (17)

A coupling structure for a wrist-wear-type electronic device including a main body and a band portion coupled to the main body,
A coupling groove formed on one side of the main body and having a first terminal portion formed on one side of the inner side; And
And an engaging portion formed on one side of the band portion and having a second terminal portion on one side of the outer surface, the second terminal portion being in contact with the first terminal portion in a state of being coupled to the engaging groove. The method according to claim 1,
The engaging groove having an opening that opens outwardly,
Wherein the engaging portion has a bar shape extending to have a cross section corresponding to the opening. The method according to claim 1,
Wherein an opening and closing member capable of sliding in a direction away from or close to the main body is provided in the coupling groove so as to be capable of opening and closing the opening. The method of claim 3,
And an elastic member provided between the main body and the opening and closing member for pressing the opening and closing member in the opening direction. The method of claim 3,
Wherein the opening and closing member has a shape corresponding to the opening. The method according to claim 1,
Wherein a sealing portion for sealing a contact portion between the band portion and the coupling groove is formed on an outer circumferential portion of the band portion so that foreign matter does not flow into the coupling groove in a state where the band portion is coupled to the coupling groove. Bond structure. The method according to claim 6,
Wherein the sealing portion is formed as a protruding portion protruding outwardly with respect to an outer peripheral surface of the band portion. The method according to claim 6,
Wherein the sealing portion is formed of a ring-shaped member coupled to the outer periphery of the band portion, and the ring-shaped member is formed of an elastic material. The method according to claim 6,
And a fitting groove corresponding to the sealing portion is formed on the opening side of the coupling groove. The method according to claim 1,
A first fastening member is provided on the other side of the inner side surface of the engaging groove,
And a first corresponding fastening member engageable with the first fastening member is provided on the other side of the outer side surface of the engaging portion. The method according to claim 1,
A second fastening member is provided on the other side of the main body,
And a second corresponding fastening member coupled to the second fastening member on the other side of the band portion. A main body having at one side thereof an engaging groove having a first terminal portion formed at an inner side thereof; And
And a band portion formed at one side of a coupling portion having a second terminal portion which is in contact with the first terminal portion and is provided on one side of the outer side in a state of being coupled to the coupling groove,
And a flexible battery part is built in the band part. 13. The method of claim 12,
Wherein the flexible battery unit includes a casing, an electrode assembly, and an electrolytic nucleus,
The outer casing and the electrode assembly are provided with patterns for shrinking and relaxing during bending,
Wherein the pattern of the casing and the electrode assembly includes matching portions. 14. The method of claim 13,
The electrode assembly
A positive electrode having a positive electrode active material layer formed on one surface or both surfaces of the positive electrode collector; A negative electrode comprising a negative electrode active material layer formed on one side or both sides of the negative electrode current collector; And a separation membrane,
Wherein the anode, the cathode, and the separator have patterns for exporting and relaxing upon bending, and include portions corresponding to the pattern of the casing. 15. The method of claim 14,
The separation membrane
A wrist wearable electronic device comprising a nanofiber web layer containing polyacrylonitrile nanofibers on one side or both sides of a nonwoven fabric layer. 14. The method of claim 13,
The pattern is formed continuously or discontinuously,
Wherein the pattern includes at least one selected from a group consisting of a prism pattern, a semicircular pattern, a wavy pattern, a polygonal pattern, an embossed pattern, and a mixed pattern thereof. A coupling structure for a wrist-wear-type electronic device including a main body and a band portion coupled to the main body,
A coupling groove formed on one side of the main body and having a first terminal portion formed on one side of the inner side; And
And an engaging portion formed at one side of the band portion and having a second terminal portion which is in contact with the first terminal portion in a state of being coupled to the engaging groove on one side of the outer side,
The engaging groove having an opening that opens outwardly,
Wherein the engaging portion has a bar shape extending to have a cross section corresponding to the opening.

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