KR20090089962A - Damping hinge for folding type mobile phone - Google Patents

Abstract

A damping hinge for a folder type portable terminal reducing impact and noise is provided to implement open and close operation and stabilize impact and noise by preventing the sudden stop. A first cam member(50) comprises a pair of jamming protrusions a pair of fixed cams(52). Jamming protrusions are formed in the inside of the fixed cam. A motion member comprises a pair of rotation projections. Rotation projections operate angular-motion the between jamming protrusion. A second cam member(60) includes a rotating cam. The rotating cam rotates the fixed cam. An elastic member contacts with each other to the fixed cam.

Description

Damping Hinge for Folding Mobile Device {Damping Hinge for Folding Type Mobile Phone}

The present invention relates to a damping hinge for a foldable portable terminal, and more particularly, stable and smooth opening and closing is possible because the weakening of the rotational force by elastic resistance in a section in which rotational force is automatically generated when the cover of the mobile terminal is opened and closed. It relates to a damping hinge for a foldable portable terminal configured to minimize the impact generated when.

In general, in order to enjoy services such as communication and multimedia broadcasting wirelessly while moving in places other than a fixed location, mobile terminals such as mobile phones, PDA terminals, laptops, portable TVs, and DMB terminals are frequently used.

In particular, in the case of the mobile phone is one of the essential necessities indispensable to life, the situation is gradually expanded to the elementary, middle and high school students and the elderly in the distribution target.

 1 shows a conventional foldable (folder type) portable terminal, and the portable terminal 2 is largely divided into a main body 3 and a cover 6, and the main body 3 includes a key input unit 4 and a talker unit ( 5) and the cover 6 is provided with a display unit 7 and a hydration unit 8, etc., the main body 3 and the cover 6 is rotatably connected to each other by a hinge (10). .

As shown in FIGS. 2 and 3, the hinge 10 is assembled with a support holder 11 having a cylindrical shape with one side opened, and one end portion rotatably inside the support holder 11. The fixed cam member 12, the movable cam member 14 which is installed and assembled to be movable in the longitudinal direction in the support holder 11, and is installed in the support holder 11 and fixed to the An elastic member 16 for applying a force such that the fixed cam 13 of the cam member 12 and the movable cam 15 of the movable cam member 14 are always in contact with each other, and the support holder 11 and the fixed cam member ( It consists of a hinge shaft 18 for engaging and supporting the 12 in a rotatable state.

The support holder 11 is mainly fixed to the cover 6 of the mobile terminal 2, and the fixed cam member 12 is mainly fixed to the body (3) of the mobile terminal.

4, the user rotates the cover 6 by a predetermined section (uphill section) to open and close the cover 6 of the first mobile terminal 2 as shown in FIG. 4. Then, the remaining section (downhill section) is formed to automatically rotate the cover (6).

The hinge device for a conventional portable terminal configured as described above has various problems such as adversely affecting the life or function of the portable terminal due to the shock generated when the cover is opened and closed.

That is, when the cover is opened and closed, the moving cam of the mobile cam member is rapidly turned downhill (automatic rotation section), and then the main body and the cover collide with each other so as to suddenly stop.

As a result, various problems such as breakage, malfunction, damage, etc. of the parts and shock noise are generated.

The present invention has been made in view of the above, the cover is rotated by slowing down the rotation speed by generating an elastic resistance in the section of the mobile terminal automatically rotates, so that sudden stop is prevented, the cover of the mobile terminal and It is an object of the present invention to provide a damping hinge for a foldable portable terminal in which shocks and noises generated when the main bodies collide with each other are reduced and a stable and smooth opening and closing operation is possible.

The damping hinge for a folding portable terminal proposed by the present invention includes a support holder having a cylindrical shape having one end surface opened, a shaft member rotatably installed to penetrate the inside of the support holder in a longitudinal direction, and one side of the shaft member. A first cam member integrally rotatably installed at an end thereof, and having a pair of fixed cams formed therein, and a pair of locking protrusions formed at predetermined intervals around the outer circumference of the shaft member in the fixed cams; An angular movement member which is assembled to the member so as to be movable along the longitudinal direction and is formed on the same rotation line as the locking projection of the first cam member, and a pair of rotating projections are formed to angularly move between the pair of the locking projections; A rotating cam is assembled to one side and is in sliding contact with the fixed cam of the first cam member and rotates together with the support holder. Standing forward movement toward the first cam member or the first cam member A second cam member moving backward to the opposite side, an elastic member installed inside the support holder and applying a force such that the fixed cam of the first cam member and the moving cam of the second cam member are in contact with each other; It is installed in the interior of the spirally wound around the shaft member is installed and one end is supported by the angular movement member and the other end comprises an elastic resistance member supported by the support holder.

One end of the shaft member and the first cam member are integrally coupled using a fastening pin.

The angular movement member and the support holder are formed with support holes for inserting and supporting both ends of the elastic resistance member, respectively.

The pair of moving grooves are formed on one side of the support holder at regular intervals on both sides facing each other, and a pair of moving protrusions are formed on both side surfaces of the second cam member, respectively.

According to the damping hinge for a portable terminal according to the present invention, it is possible to reduce the rotational speed of the cover of the mobile terminal because the cover of the mobile terminal is automatically rotated to reduce the rotational force generated by the torsion of the elastic resistance member. .

Therefore, the opening and closing operation of the cover of the portable terminal can be performed stably and smoothly, and it is possible to prevent the decrease in life due to the shock applied to the portable terminal during sudden rotation or sudden stop.

And since the cover of the portable terminal does not hit hard to the main body it is possible to reduce the noise during opening and closing, it is also possible to adjust the rotation speed according to the number and specifications of the elastic resistance member.

One embodiment of the damping hinge for a foldable portable terminal according to the present invention, as shown in Figures 5 to 7, the support holder 30, the shaft member 40 is installed through the interior of the support holder 30 And a first cam member 50 having a pair of fixed cams 52 and a pair of locking projections 54, an angular movement member 80 having a pair of rotating protrusions 82, and a pair of The second cam member 60, the rotary cam 60 is formed, the elastic member 70 is installed in the support holder 30, and the elastic resistance member is installed in the support holder 30 ( 90).

The support holder 30 has a cylindrical shape in which one end surface (right side in FIG. 7) is opened.

On the other end (left side in FIG. 7) of the support holder 30 is formed a through hole 32 through which the shaft member 40 rotatably penetrates.

The shaft member 40 is formed in a substantially bar shape and is rotatably installed to penetrate the inside of the support holder 30 in the longitudinal direction.

Both ends of the shaft member 40 are installed to be exposed from the support holder 30, one end of the first cam member 50 is installed, the other end of the support holder 30 The head portion 41 is exposed from the position is formed.

 A washer 46 may be installed between the head 41 and the support holder 30 of the shaft member 40.

As shown in FIG. 11, the first cam member 50 has a male assembly 51 formed on one side (right side in FIG. 7) and a fixed cam 52 formed on the other side (left side in FIG. 7). do.

The male assembly 51 is rotatably assembled to the main body 22 or the cover 26 of the mobile terminal 20.

The first cam member 50 is formed with an insertion hole 55 penetrating through the center portion so that one end of the shaft member 40 is inserted.

Inside the fixed cam 52, a pair of engaging protrusions 54 are formed at regular intervals around the outer circumference of the shaft member 40.

One end of the shaft member 40 and the first cam member 50 is rotatably coupled integrally using a fastening pin 58.

That is, as shown in Figure 10, one end portion of the shaft member 40 and the first cam member 50, the fastening holes 42, 56 are formed at positions corresponding to each other, respectively, the fastening hole The fastening pins 58 are assembled to 42 and 56.

The angular movement member 80 is installed at an approximately central portion of the shaft member 40 and is assembled to the shaft member 40 so as to be rotatable and slidable.

In the center portion of the angular movement member 80 is formed a through hole 82 through which the shaft member 40 passes.

As shown in FIGS. 9 and 18, the angular movement member 80 is positioned on the same rotation line as the locking protrusion 54 of the first cam member 50 to angularly move between the pair of locking protrusions 54. A pair of the rotation protrusions 84 are formed to be.

The second cam member 60 is assembled to one side of the support holder 30 and a pair of rotary cams 62 are formed to slide in sliding contact with the fixed cam 52 of the first cam member 50. And move forward toward the first cam member 40 while rotating together with the support holder 30 or the first cam member 40. Move backward to the other side.

The elastic member 70 exerts a force such that the fixed cam 52 of the first cam member 50 and the moving cam 62 of the second cam member 60 are in contact with each other.

The elastic member 70 is provided between the other end surface of the support holder 30 and the second cam member 60 and the compression coil spring to form a cylindrical shape by spirally wound around the shaft member 40 Is done using.

 The elastic resistance member 90 is installed inside the support holder 30 and spirally wound around the shaft member 40, and one end thereof is supported by the angular movement member 80 and the other end thereof. The part is supported by the support holder 30.

12 and 13, 15 and 16, the elastic resistance member 90 in the spiral wound around the shaft member 40 to form a cylindrical body of the elastic body 91 and the elastic Consists of a pair of support parts 93 are bent at approximately both ends of the body 91 extending and formed at right angles, the support parts 93 are inserted into the angular movement member 80 and the support holder 30, respectively, and supported Supporting holes 83 and 33 are formed respectively.

The elastic resistance member 90 may be made of a torsion coil spring or the like which is generally widely used.

In one embodiment of the damping hinge for a foldable portable terminal according to the present invention made as described above, a pair of moving grooves 36 are formed on both sides of the support holder 30 facing each other, and the second cam member Both side surfaces of the 60 may be provided with a pair of moving projections 66 movably assembled to the moving groove 32.

Next, an operation process of the damping hinge for a foldable portable terminal according to the present invention will be described with reference to the drawings.

First, when the cover 26 of the mobile terminal 20 is closed, the concave portion of the mobile cam 62 formed on the second cam member 60 protrudes from the protruding end portion of the first cam member 50. It is located in contact with (see Figs. 12 and 17 (a)).

When the cover 26 is rotated in the opening direction in order to use the mobile terminal 20 in the above state, the support holder 30 and the first cam member 60, the elastic member 70, the angular movement member 80, the elastic resistor 90 is rotated.

On the other hand, the first cam member 50 is stopped because it is assembled and fixed to the main body 22 of the mobile terminal 20, the shaft member 40 is fastened to the first cam member 50 and the fastening pin As it is fastened to (58), it is in a stopped state.

As the support holder 30 and the first cam member 60, the elastic member 70, the angular movement member 80, the elastic resistor 90 rotates, the uphill section of the movable cam 62 and the fixed cam The protruding ends of 52 slide and rotate in contact with each other, whereby the second cam member 60 moves backward to the opposite side of the first cam member 50 (see FIG. 13).

As described above, when the second cam member 60 moves backward, the elastic member 70 is compressed, and a protruding end portion of the fixed cam 52 is formed in an uphill section (top) of the mobile cam 62. (See FIG. 17B).

And the rotation projection 84 of the angular movement member 80 is stopped by the locking projection 54 of the first cam member 50, the rotation is stopped, accordingly the elastic resistance member 90 of one end portion Rotation is stopped.

If the cover 26 is continuously rotated in the above state, the compressive elastic force of the elastic member 50 is released even if the user does not apply any more force, and the second cam member 60 is the first cam member 50. Move forward automatically to).

In addition, the elastic resistance member 90 has a torsion caused by the rotation of the other end in a state in which the rotation of one end is stopped, thereby slowing down the speed at which the second cam member 60 moves forward. Therefore, the cover 26 of the mobile terminal 20 is also slowly rotated and opened. (See FIG. 16).

When the second cam member 60 moves forward and the concave portion of the fixed cam 50 is positioned in contact with the protruding end of the mobile cam 62 as in the initial state, the cover 26 of the mobile terminal 10 is moved. ) Is completed. (See FIGS. 12 and 17 (c)).

When the cover 26 of the portable terminal 20 is closed, an operation process is performed in the reverse order of the opening, so detailed description thereof will be omitted.

In the above description of the preferred embodiment of the damping hinge for a folding portable terminal according to the present invention, the present invention is not limited to this, but it is not limited to the claims and the detailed description of the invention, it is to be variously modified within the scope of the accompanying drawings. It is possible and this also falls within the scope of the present invention.

1 is a perspective view showing a hinge for a conventional folding portable terminal.

2 is an exploded perspective view showing a hinge for a conventional folding portable terminal.

3 is a cross-sectional view showing a hinge for a conventional folding portable terminal.

Figure 4 is a cam diagram of a mobile cam showing a hinge for a conventional foldable portable terminal.

5 is a perspective view showing an embodiment of a damping hinge for a folding portable terminal according to the present invention.

6 is an exploded perspective view showing an embodiment of a damping hinge for a folding portable terminal according to the present invention.

7 is a partial cross-sectional view showing an embodiment of a damping hinge for a foldable portable terminal according to the present invention.

8 is a cross-sectional view taken along the line A-A of FIG.

9 is a cross-sectional view taken along the line B-B in FIG.

10 is a cross-sectional view taken along the line C-C of FIG.

11 is a perspective view showing a first cam member in one embodiment of a damping hinge for a foldable portable terminal according to the present invention.

12 is a cross-sectional view showing a state in which the cover of the portable terminal is closed in one embodiment of a damping hinge for a foldable portable terminal according to the present invention.

Figure 13 is a cross-sectional view showing a state in which the cover of the portable terminal is half open or closed in one embodiment of the damping hinge for a folding portable terminal according to the present invention.

14 is a cross-sectional view showing the first cam member and the angular movement member in a state in which the cover of the portable terminal is half open or closed or the opening or closing is completed in one embodiment of the damping hinge for a folding portable terminal according to the present invention.

15 is a cross-sectional view showing an elastic resistance member in a state in which the cover of the portable terminal is half open or closed in one embodiment of the damping hinge for a folding portable terminal according to the present invention.

16 is a cross-sectional view showing an elastic resistance member in a state in which the cover of the portable terminal is open or closed in one embodiment of a damping hinge for a folding portable terminal according to the present invention.

17 is an exploded view of a fixed cam and a mobile cam showing an operation process in one embodiment of a damping hinge for a foldable portable terminal according to the present invention.

Claims (5)

A support holder having a tubular shape in which one end surface is opened; A shaft member rotatably installed in the longitudinal direction of the support holder; A first cam which is rotatably installed at one end of the shaft member and has a pair of fixed cams formed therein and a pair of locking projections formed at a predetermined interval around the outer circumference of the shaft member inside the fixed cam; Absence, An angular movement member which is assembled to the shaft member in a longitudinal direction and is disposed on the same line as the locking projection of the first cam member and has a pair of rotating projections to angularly move between the pair of locking projections; A rotating cam is assembled to one side of the support holder and is in sliding contact with the fixed cam of the first cam member and rotates. The rotating cam rotates together with the support holder and moves forward toward the first cam member or the first cam member. A second cam member moving backward to the opposite side; An elastic member installed inside the support holder and applying a force such that the fixed cam of the first cam member and the moving cam of the second cam member are in contact with each other; It is installed inside the support holder and is installed helically wound around the shaft member, one end is supported by the angular movement member and the other end is a foldable portable terminal including an elastic resistance member supported by the support holder Damping hinge. The method according to claim 1, The first cam member is the fixed cam is formed on one side and the water assembly is formed on the other side, Damping hinge for a foldable portable terminal is formed in the other end surface of the support holder a passage hole through which the other end of the shaft member passes. The method according to claim 1, The elastic resistance member is composed of an elastic body that is wound around the shaft member to form a cylindrical shape and a pair of support portions formed by bending at an angle at both ends of the elastic body, Damping hinge for a foldable portable terminal is formed in the angular movement member and the support holder, respectively, the support hole is inserted into each of the support is supported. The method according to claim 1, One side of the support holder is formed with a pair of moving grooves at regular intervals on both sides facing each other, Damping hinge for a foldable portable terminal is formed on both sides of the mobile cam member, a pair of moving projections are assembled to the moving groove, respectively. The method according to claim 1, Fastening holes are formed at one end of the shaft member and the first cam member at positions corresponding to each other, Damping hinge for a folding portable terminal that the fastening pin is assembled to the fastening hole.

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