WO2016064025A1

WO2016064025A1 - Cellular phone cradle system having rotary contact part

Info

Publication number: WO2016064025A1
Application number: PCT/KR2014/012430
Authority: WO
Inventors: 임영철
Original assignee: 임영철
Priority date: 2014-10-23
Filing date: 2014-12-17
Publication date: 2016-04-28

Abstract

The present invention relates to a holder for a portable personal terminal and provides a cellular phone cradle system having a rotary contact part, comprising: a case in which a portable terminal is accommodated; and a cradle having a head part to/from which the case is attached/detached, a stand part provided at a lower part of the head part, and an adsorption plate provided to the bottom surface of the stand part, wherein the head part and the stand part are coupled by means of a ball joint. The cellular phone cradle system having a rotary contact part, according to the present invention, can be simply fixed onto a dashboard in a vehicle by having an adsorption plate, the attachment/detachment thereof is convenient, the horizontal/vertical rotation thereof is free in a fixed state, and a magnet part thereof is separated so as to fix a rotation angle such that the case is not tilted. In addition, a portable terminal provided in the case can be charged and can transmit and receive data in a state in which the portable terminal is hung over the cradle. Furthermore, the cradle can be conveniently fixed onto a fixing surface by operating a button.

Description

Mobile Phone Cradle System with Rotary Contact

The present invention relates to a cradle of a portable personal terminal, and more particularly, a case into which a mobile phone or a smartphone can be inserted, and the case can be combined to rotate vertically or horizontally, and can charge a mobile phone by an external power source. A mobile phone cradle system having a rotary contact comprising a cradle.

In general, a number of technologies related to a mounting mechanism for attaching or mounting a personal portable terminal such as a smartphone or a mobile phone to a dashboard or a front glass window in a vehicle to be used by a user are disclosed.

For example, Korean Patent Registration No. 10-1250267 (published date: 2013. 03. 06) relates to a contactless charger used in a vehicle, and is coupled to a fixed plate 10 fixed to the front panel of the vehicle to protrude to a certain height. The support bar 20 to be raised, the support panel 30 fixed to the end of the support bar 20, the charging pad in close contact with the size corresponding to the support panel 30 (= 1 primary device; 100) and When power is supplied to the charging pad, which is the primary device 100, it is built in the case A of the mobile terminal 301 and is energized with the battery 300 through the gender connection part 310 of the mobile terminal 301. Gender 200; And a terminal case (A) covering the rear and side surfaces of the portable terminal 301 from the outside except for the front surface of the portable terminal 301 to cover the mobile terminal 301 by engaging the upper case 210b and the lower case 210a with each other. It provides a vehicle mobile phone holder made of.

The above-mentioned cited technology includes a terminal case accommodating a mobile terminal and a charging pad provided to be charged through the terminal case, and provides a technology for charging the terminal by an induced current between the terminal case and the charging pad.

However, the cited technology requires a separate data connection means for data communication between the terminal and an external device in addition to supplying power to the terminal, and the support panel for fastening and supporting the terminal case is complicated. There is a problem that is uncomfortable and deterioration of appearance.

In order to solve the conventional problems as described above, the present invention is coupled to the case by the magnetic material, the rotation is free, the power charging and data transmission and reception is possible during rotation, and the constant rotation angle is set, so that the horizontal to vertical rotation A mobile phone cradle system is provided having an easy rotary contact.

Other objects of the present invention will be readily understood through the following description of the embodiments.

In order to achieve the above object, according to an aspect of the present invention, a portable terminal is accommodated, the case is provided with a USB terminal coupled to the charging terminal of the mobile terminal therein; And a head part to which the case is detachable, a support part provided at the bottom of the head, a suction plate provided at the bottom of the support part, and a cradle in which the head part and the support part are coupled to a ball joint. An outer housing provided such that the portable terminal is coupled to the front; A back plate coupled to a rear surface of the outer housing and having a through hole formed at a central portion thereof; An inner plate coupled between the outer housing and the back plate, and having a USB terminal coupled to a lower end thereof, and having an electrode plate exposed to the through hole of the rear plate fixed to an upper end thereof; And a coupling plate provided to be embedded at an upper end of the inner plate, wherein the cradle includes a front housing formed at one side of the head and coated with a protective film layer to attach and detach the case; A contact terminal provided on a front surface of the front housing and provided with a plurality of terminals in contact with the rotatable contact portion; One side is coupled to the bottom surface of the head portion, the other side is provided with a neck joint coupled to the upper end of the support portion; And a case and a cradle provided at an inner side of the support part, one side of which is coupled to an upper portion of the suction plate, and the other side of which is in contact with a bottom surface of the suction plate button provided at one side of the support part. This is provided.

The inner plate may include a terminal holder coupled to a lower end of the USB terminal coupled to the lower end; A film cable extending from one side of the USB terminal and connected to the electrode plate; And a first buried groove and a second buried groove in which the coupling plate is embedded, the mobile contact cradle system having a rotatable contact portion is provided.

In addition, the coupling plate, the electrode plate is provided in a disc shape so that the overlap, the circular coupling plate coupled to the first buried groove; And a rotation contact portion coupled to a second buried groove formed around the circular coupling plate and having four turning plates arranged at right angles to the center of the circular coupling plate. .

On the other hand, the head portion is provided in the shape of a flat surface on one side so that the back plate is in contact, a terminal hole is provided so that one side of the contact terminal protrudes in the central portion, the magnet portion is accommodated in the inner side, USB connection port is formed on one side of the bottom, A front housing to which the upper end of the neck is coupled to the other side of the bottom; A protective film layer attached to the front surface of the front housing; A substrate portion having one side coupled to the other side of the front housing and having a contact terminal at a central portion thereof to protrude into the terminal hole; And a rear housing coupled to the other side of the front housing to accommodate the substrate, wherein the magnet unit includes a circular magnet provided to attract a force to the circular coupling plate inside the rear plate when the case is mounted on the cradle; And is provided to be disposed around the outer diameter of the circular magnet, there is provided a mobile phone cradle system having a rotary contact portion including a turning magnet provided to attract the force to the turning plate.

In addition, the link member is provided in the shape of an isosceles triangle, one side edge is provided in contact with the bottom surface of the suction plate button, the other edge is rotatably coupled to the upper side of the suction plate, the corner of the vertex side is inside the support portion Rotatingly coupled to the support shaft formed in the, the suction plate button, the mobile phone cradle system having a rotary contact portion, characterized in that the bottom surface portion is extended horizontally to one side and has an elastic force and fixed to one side of the inner surface of the support portion Is provided.

According to the case and the cradle provided with a rotary contact portion according to the present invention, the suction plate is provided to be easily fixed on the dashboard in the vehicle, the case is fixed on the cradle by a magnet, so that the detachable is easy and horizontally in the fixed state Rotation is free, and the magnet is separated so that the rotation angle is fixed, the case does not tilt.

In addition, the USB power supply terminal provided in the case and the cradle enables charging or data transmission and reception of the mobile terminal mounted in the case while the case is detached from the cradle without additional manipulation. .

In addition, the cradle can be fixed to the fixed surface simply by operating a button.

1 is a perspective view of a cradle system according to an embodiment of the present invention.

2 is a perspective view of a case according to an embodiment of the present invention.

3 is an exploded perspective view of a case according to an embodiment of the present invention.

Figure 4 is an exploded perspective view of the cradle according to an embodiment of the present invention.

5 is a bottom perspective view of the cradle according to an embodiment of the present invention.

6 is a cross-sectional view of the cradle according to an embodiment of the present invention.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, but should be understood as including all changes, equivalents, and substitutes included in the spirit and scope of the present invention, and may be modified in various other forms. It is to be understood that the scope of the present invention is not limited to the following examples.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted.

1 is a perspective view of a case and a cradle according to an embodiment of the present invention, Figure 3 is an exploded perspective view of a case according to an embodiment of the present invention, Figure 4 is an exploded perspective view of a cradle according to an embodiment of the present invention to be.

1, 3 and 4, the present invention is a case 110 consisting of the outer housing 111, the back plate 112 and the inner plate 113, the head portion 130A, the neck portion 137 and It may be made of a cradle 130 is composed of a supporting portion (130B).

Referring to FIG. 2, the case 110 may include an outer housing 111, a rear plate 112, an inner plate 113, a coupling plate 114, and an electrode plate 115.

The outer housing 111 is configured to serve as a casing in which a mobile terminal, for example, a smartphone is coupled and protected, and may be made of an elastic material such as silicon or rubber to protect the smartphone. The smart phone is coupled to the outer housing 111 by the interference fit method so that the front display portion is exposed to the outside, and the side and the rear side are wrapped in the outer housing 111 can be protected from external impact and scratches.

The back plate 112 is provided in contact with the head portion 130A of the cradle 130 to support the case 110. The back plate 112 is made of a material having a higher rigidity than the outer housing 111 to maintain the shape of the case 110. In addition, the case 110 mounted on the cradle 130 is provided to be supported. Accordingly, although not shown in the drawing, a reinforcing rib in the form of a lattice may be formed on the inner surface of the back plate 112.

A through hole 112a is formed in the central portion of the back plate 112 so that the electrode plate 115 may be exposed to the outside. The through hole 112a serves to allow the contact terminal 40 provided on the head 130A to be in contact with the electrode plate 115 installed on the inner plate 113.

The inner side plate 113 is fixed to the inner side is coupled to the inner side of the back plate 112, the coupling plate 114, the electrode plate 115 and the film cable 116a between the back plate 112 and the inner plate 113. ) Is located. In this case, a coupling protrusion 113c is formed at a circumferential edge of the inner plate 113, and a coupling protrusion 113c is formed at the inner side of the back plate 112 although not shown in the drawing. By combining the inner plate 113 and the back plate 112 may be combined.

A buried groove is formed in the upper portion of the inner plate 113 for embedding the coupling plate 114. In this case, the coupling plate 114 may be formed of a circular coupling plate 114a at the center and a direction switching plate 114b provided in plural around the circular coupling plate 114a. The circular coupling plate 114a serves to allow the case 110 to be coupled to the head portion 130A by the magnetic force of the circular magnet 30a provided inside the head portion 130A of the cradle 130. The circular coupling plate 114a and the circular magnet 30a are circularly provided to have the same diameter to each other so that the case 110 coupled to the head portion 130A can be easily rotated horizontally or vertically.

The circular coupling plate 114a may be formed of a magnet material and may be disposed to have a polarity opposite to that of the circular magnet 30a, that is, the surfaces facing the circular magnet 30a to have opposite polarities. In addition, since the circular coupling plate 114a is provided as a simple steel plate, the case 110 may be coupled to the head portion 130A by the magnetic force of the circular magnet 30a.

The turning plate 114b is fixedly installed at a position corresponding to the turning magnet 30b accommodated inside the head portion 130A, more specifically, at a position for four division of the circular coupling plate 120b-1. do. Accordingly, the case 110 may be fixed at a fixed position rotated in the horizontal direction to the vertical direction while being mounted on the head portion 130A. At this time, the direction switching plate 114b may be provided with any one of a magnet or a steel plate material in the same manner as the circular coupling plate 114a described above.

The circular coupling plate 114a and the direction switching plate 114b are installed by being embedded in the first buried groove 113a and the second buried groove 113b respectively provided in the upper side of the inner plate 113.

USB terminal 116 is coupled to the bottom of the inner plate 113 is provided to protrude to the inside of the outer housing (111). At this time, the terminal holder 116b is coupled to the bottom of the USB terminal 116 to prevent the USB terminal 116 from being separated. The terminal holder 116b has both side ends coupled to a lower end of the terminal groove 111a formed at the bottom of the outer housing 111, and a hole into which the bottom of the USB terminal 116 is fitted is provided to support the USB terminal 116. do.

The electrode plate 115 is provided as a terminal exposed to the outside through the through hole 112a in the center of the back plate 112 at a position parallel to the center point of the circular coupling plate 114a. Although not illustrated in detail, the electrode plate 115 may be provided as a rectangular PCB including a point terminal in the center and an annular circle terminal surrounding the periphery of the point terminal. The dot terminal and the circular terminal of the PCB are provided to contact each of the contact terminals 40 provided on one side of the head portion 130A when the case 110 is mounted on the head portion 130A. The contact terminal 40 may maintain adhesion to the electrode plate 115 by being provided with a pogo pin or a spring pin having a 2-pin terminal.

The electrode plate 115 is electrically connected by the USB terminal 116 and the film cable 116a provided at the lower end of the inner plate 113. Generally, a USB terminal used for a smartphone is a micro USB terminal having a 4-pin standard, whereas the rotary contact part 120a is provided to have two connection points. Accordingly, the substrate unit for converting the signal current may be further included in the electrode plate 115. The film cable 116a may be replaced with a general wire.

Referring to FIG. 4, the cradle 130 may include a head portion 130A and a support portion 130B.

The head portion 130A may include a front housing 10 and a rear housing 60, a magnet portion 30, a contact terminal 40, and a substrate portion 50.

The front housing 10 is provided to be in contact with the back plate 112 of the case 110 by having a flat side surface, the terminal hole 10a is formed in the center. The protective film layer 10b may be added to the front surface of the front housing 10. The protective film layer 10b prevents the front housing 10 and the back plate 112 of the case 110 from being worn or scratched by mutual friction due to rotation, and can print various design patterns and the like.

The magnet part 30 is accommodated on the other side of the front housing 10. The magnet part 30 is composed of a circular magnet 30a and a turning magnet 30b, and the turning magnet 30b is provided with four magnets respectively disposed at positions that divide the outer diameter of the circular magnet 30a into four segments. do. At this time, it is preferable that the position of the turning magnet 30b is disposed at the same position as the position where the turning plate 114b described above is disposed.

Meanwhile, a pupil is formed at the center of the front housing 10 and the circular magnet 30a so that the contact terminal 40 is formed on the outer side of the front housing 10 through the terminal hole 10a formed at the center of the front housing 10. To be exposed. The contact terminal 40 is connected to the substrate portion 50 and the substrate portion 50 is fixed to the rear housing 60 so that the rear housing 60 and the front housing 10 are coupled to the terminal hole 10a. Through one side is exposed to the outside of the front housing 10.

As described above, the contact terminal 40 may be provided as a pogo pin or a spring pin to contact the electrode plate 115 when the case 110 is attached to the front housing 10.

The board unit 50 is electrically connected to the contact terminal 40 on one side thereof, and a USB port (not shown) is provided on the other side thereof so that the USB port 20a is formed at one side of the bottom surface of the front housing 10. Can be exposed. The substrate portion 50 is fixed to the rear side of the front housing 10 together with the circular magnet 30a.

Referring to FIG. 5, a USB connector 20a is provided at one side of the bottom surface of the head portion 130A to connect a USB cable to the head portion 130A, and the substrate portion 50, the contact terminal 40, and the rotary contact portion are provided. Power or data may be transmitted to the smartphone (not shown) through 120a.

At this time, the USB cable (not shown) coupled to the USB connector 20a passes through the cable hole 137a provided in the neck portion 137 so that the USB cable is arbitrarily removed from the USB connector 20a or the head portion 130A is removed. The USB cable prevents it from moving in an unintended direction.

Referring to FIG. 5, one end of the neck portion 137 is coupled to the other side of the bottom of the head portion 130A, and the other end thereof is provided to be coupled by the support portion 130B and the ball joint. Specifically, the ball (b) is formed on one end of the support 130B, the holder 137c is formed on the other end of the neck 137 may be provided so that the ball (b) is fitted to the holder (137c). Although not shown in the drawing, the holder 137c may be provided in a hole shape surrounded by a plurality of arms that are elastic so that the ball b may be fitted and fastened from one side. When the ball b is fastened to the holder 137c, the coupling force of the ball b and the holder 137c may be adjusted by tightening the tightening nut 137b provided to surround the holder 137c in a cylindrical shape. The tightening nut 137b may be formed with a groove having an inner side in contact with the holder 137c and tightening the arm of the holder 137c by screwing with one side of the neck 137. Accordingly, by rotating the tightening nut (137b) it is possible to freely move the head portion 130A or to be fixed in a specific direction and angle.

On the other hand, the support portion 130B may be provided with a structure for driving the suction plate 138c on the inside so that the suction plate 138c provided on the bottom surface can suck the bottom surface.

Referring to FIG. 6, a cross-sectional view schematically showing a cross section of the base 130B is shown.

One side of the support portion 130B is provided with a suction plate button 138b. The suction plate button 138b is provided so that one side of the bottom surface is horizontally extended and fixed to one side of the inner wall of the support 130B. The extension part e of the suction plate button 138b is provided to have an elastic force, and when the suction plate button 138b is pressed and released, it can be restored to its original position.

One side of the bottom surface of the extension part (e) is provided to be in contact with one side edge of the link member (138a). The link member 138a is provided in the shape of an isosceles triangle, one of the corners on both sides of the isosceles is in contact with the bottom of the extension portion e, and the other edge is pivotally coupled to the upper portion of the suction plate 138c. . The vertex corner of the link member 138a penetrates the support shaft 138d extending from the other side of the inner wall of the support 130B, thereby acting as a support point so that the link member 138a serves as a lever.

That is, when the suction plate button 138b is pressed, one edge of the link member 138a is pressed and the other edge connected to the upper portion of the suction plate 138c is lifted, and the support 130B is fixed while the suction plate 138c sucks the bottom surface. Can be.

The operation of the case and the cradle having a rotary contact according to the present invention will be described.

The user couples the smartphone to the case 110. The outer housing 111 of the case 110 may be made of an elastic silicone or rubber material, so that a smart phone may be coupled to the case 110 by applying a slight force. Thereafter, the case 110 is coupled to the cradle 130. When the rear side of the case 110 is close to the front housing 10 of one side of the head 130b of the cradle 130, the magnet unit 30 embedded in the rear of the front housing 10 is coupled to the case 110. The pulling is made while pulling the plate 114. In this case, the contact terminal 40 is positioned at the center of the magnet part 30, and is exposed to the terminal hole 10a of the front housing 10, and the electrode plate 115 is exposed at the rear of the case 110 so that the case 110 is exposed. ) Is in contact with the contact terminal 40 and the electrode plate 115 when the front housing 10 contacts.

When the case 110 is rotated from left to right in a state in which the case 110 is attached, the turning magnet 30b in the head portion 130A holds the turning plate 114b in the case 110 at the beginning of rotation. Some resistance occurs while pulling. When the case 110 is continuously rotated, the rotation angle may be fixed according to the attraction force of the turning magnet 30b positioned in the next rotation direction after leaving the attraction force of the turning magnet 30b. The turning magnet 30b is disposed every 90 ° along the outer diameter of the circular magnet 30a, and the turning plate 114b is also disposed at a symmetrical position thereof, so that the case 110 has a rotation angle of 90 °. The rotation angle may be fixed by magnetic force whenever close.

In addition, since the contact between the electrode plate 115 and the contact terminal 40 is maintained while the case 110 rotates as described above, power charging or data transmission and reception of the smart phone may be continuously performed.

As described above, the present invention has been described with reference to the accompanying drawings, but various modifications and changes can be made without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

According to an aspect of the invention, the portable terminal is accommodated, the case is provided with a USB terminal coupled to the charging terminal of the portable terminal inside; And a head part to which the case is detachable, a support part provided at the bottom of the head, a suction plate provided at the bottom of the support part, and a cradle in which the head part and the support part are coupled to a ball joint. An outer housing provided such that the portable terminal is coupled to the front; A back plate coupled to a rear surface of the outer housing and having a through hole formed at a central portion thereof; An inner plate coupled between the outer housing and the back plate, and having a USB terminal coupled to a lower end thereof, and having an electrode plate exposed to the through hole of the rear plate fixed to an upper end thereof; And a coupling plate provided to be embedded at an upper end of the inner plate, wherein the cradle includes a front housing formed at one side of the head and coated with a protective film layer to attach and detach the case; A contact terminal provided on a front surface of the front housing and provided with a plurality of terminals in contact with the rotatable contact portion; One side is coupled to the bottom surface of the head portion, the other side is provided with a neck joint coupled to the upper end of the support portion; And a case and a cradle provided at an inner side of the support part, one side of which is coupled to an upper portion of the suction plate, and the other side of which is in contact with a bottom surface of the suction plate button provided at one side of the support part. This is provided.

Industrial Applicability The present invention can be used industrially as a cradle for a portable personal terminal.

100: case and cradle

110 case 111 outer housing

112: back plate 113: inner plate

114: coupling magnet 115: electrode plate

116: USB terminal 130: cradle

130A: head portion 10: front housing

30: magnet portion 40: contact terminal

50: substrate 60: rear housing

130B: Base 137: Neck

138a: link member 138b: adsorption plate button

138c: adsorption plate 138d: support shaft

Claims

A case 110 having a portable terminal housed therein and having a USB terminal 116 coupled to a charging terminal of the portable terminal inside; And

The head part 130A to which the case 110 is attached and detached, the support part 130B provided below the head part 130A, the suction plate 138c provided on the bottom surface of the support part 130B, and the head part 130A and the support portion 130B includes a cradle 130 coupled to the ball joint,

The case 110,

An outer housing 111 provided to couple the portable terminal to a front surface thereof;

A rear plate 112 coupled to a rear surface of the outer housing 111 and having a through hole 112a formed at a central portion thereof;

The electrode plate 115 is coupled between the outer housing 111 and the back plate 112, the USB terminal 116 is coupled to the bottom, and exposed to the through hole 112a of the back plate 112 at the top An inner plate 113 fixed; And

It includes a coupling plate 114 is provided to be embedded in the upper end of the inner plate 113,

The cradle 130,

A front housing 10 formed at one side of the head part 130A and having a protective film layer 10b coated thereon to attach and detach the case 110;

A contact terminal 40 provided on a front surface of the front housing 10 and provided with a plurality of terminals in contact with the rotatable contact portion 120a;

One side is coupled to the bottom surface of the head portion (130A), the other side is provided with a neck portion 137 to be coupled to the ball joint with the upper end of the support portion (130B); And

A link provided inside the support part 130B, one side of which is coupled to an upper portion of the adsorption plate 138c, and the other side of which is in contact with a bottom surface of the adsorption plate button 138b provided on one side of the support part 130B. Case and cradle having a rotatable contact comprising a member (138a).
The method according to claim 1,

The inner plate 113,

A terminal holder 116b coupled to a lower end of the USB terminal 116 coupled to the lower end;

A film cable 116a extending from one side of the USB terminal 116 and connected to the electrode plate 115; And

Mobile phone cradle system having a rotary contact portion characterized in that the first buried groove (113a) and the second buried groove (113b) is formed in which the coupling plate 114 is embedded.
The method according to claim 1 or 2,

The coupling plate 114,

A circular coupling plate 114a provided in a disc shape such that the electrode plate 115 overlaps and coupled to the first buried groove 113a; And

It is coupled to the second buried groove (113b) formed around the circular coupling plate (114a), and includes four direction switching plate (114b) disposed four to be perpendicular to the center of the circular coupling plate (114a) Mobile phone cradle system with a rotary contact.
The method according to claim 1,

The head portion 130A,

One side is provided in a flat shape so that the back plate 112 is in contact, a terminal hole 10a is provided to protrude one side of the contact terminal 40 in the center portion, and the magnet part 30 is housed inside. A front housing 10 having a USB connector 20a formed at one side of a bottom thereof, and having an upper end of the neck 137 coupled to the other side of the bottom thereof;

A protective film layer 10b attached to the front surface of the front housing 10;

A substrate portion 50 having one side coupled to the other side of the front housing 10 and having a contact terminal 40 at a central portion thereof to protrude into the terminal hole 10a; And

And a rear housing 60 coupled to the other side of the front housing 20 to accommodate the substrate 50.

The magnet unit 30,

A circular magnet 30a provided to attract a force to the circular coupling plate 114a inside the rear plate 112 when the case 110 is mounted on the cradle 130; And

The mobile phone cradle system having a rotary contact portion is provided to be disposed around the outer diameter portion of the circular magnet (30a), and includes a turning magnet (30b) is provided so that the attraction force acts on the turning plate (114b).
The method according to claim 1,

The link member 138a,

Is provided in the shape of an isosceles triangle,

One side edge is provided to contact the bottom surface of the suction plate button (138b), the other edge is rotatably coupled to the upper portion of the suction plate (138c), the support shaft (138d) the corner of the vertex side is formed inside the support portion Rotatably coupled to,

The suction plate button 138b,

Mobile phone cradle system having a rotary contact portion characterized in that the bottom portion is horizontally extended to one side and has an elastic force and is fixed to one side of the inner surface of the support portion (130B).