JP2008248985A - Hinge device and mobile phone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge device capable of generating click sound and preventing rattling from occurring and a mobile phone having the hinge device. <P>SOLUTION: This hinge device 1 comprises: a first casing 11 and a second casing 12 disposed adjacent to each other on an axis rotatably relative to each other around a rotating axis L; a first hinge part 13 so disposed in the first casing 11 as to form the gap allowing it to be rotated relative to the first casing 11; a second hinge part 14 secured to the inside of the first casing 11 and unrotatable relative to the first casing 11; a second hinge part biasing part 16 disposed in the second casing 12 and biasing the second hinge part 14 to the first casing 11 side along the rotating axis L; and a rotatingly driving part for rotatingly driving the first hinge part 13 in the first casing 11 relative to the first casing when the first casing 11 and the second casing 12 are rotatingly driven a predetermined angle relative to each other. The first hinge part 13 has a contact part brought into contact with the inner surface of the first casing 11 when rotatingly driven by the rotatingly driving part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hinge device and a mobile phone.

2. Description of the Related Art Conventionally, electronic devices such as mobile phones have been downsized, and accordingly, folding mobile phones have become widespread. A hinge device is incorporated in a foldable mobile phone or the like, and a pair of cases are configured to be rotatable.
FIG. 14 shows the hinge device 8 (see Patent Document 1).
The hinge device 8 includes a fixed body 81, a movable body 82 arranged to be rotatable with respect to the fixed body 81, and a pair of coiled springs 83 and 84.
The fixed body 81 is provided with a fixed cam 85 on the side surface, and the movable body 82 is provided with a movable cam 86 on the surface facing the fixed cam 85. The movable cam 86 is in elastic contact with the fixed cam 85 by springs 83 and 84. When the mobile phone is closed, the tip of the movable cam 86 is in elastic contact with the inclined portion 85A of the fixed cam 85. When the mobile phone is opened, the movable body 82 rotates, and the tip of the movable cam 86 exceeds the protruding portion 85B of the fixed cam 85 and comes into contact with the inclined portion 85C of the fixed cam 85.

FIG. 15 shows a hinge device 9 having another structure (see Patent Document 2).
The hinge device 9 biases the first hinge member 92, the second hinge member 93, the striking member 94, the movable member 95, and the movable member 95, which are connected via the hinge shaft 91, to the striking member 94 side. And an urging means 96.
The second hinge member 93 is provided to be rotatable with respect to the first hinge member 92. The movable member 95 is provided with a sphere 97 that is inserted into a concave portion 94B formed on the surface of the striking member 94 opposite to the convex portion 94A.
Further, as shown in FIGS. 16 to 18, the second hinge member 93 is formed with a recess 93A into which the convex portion 94A of the striking member 94 is inserted, and the width of the concave portion 93A is larger than the width of the convex portion 94A. Is also getting bigger.
In such a hinge device 9, as shown in FIG. 16, the sphere 97 hits the slope 94 </ b> B <b> 1 of the recess 94 </ b> B of the striking member 94 when the mobile phone is folded.
When the mobile phone is opened, the sphere 97 comes into contact with the facing surface 94B2 of the recess 94B of the striking member 94 as shown in FIG. In the striking member 94, the convex portion 94 </ b> A of the striking member 94 moves in the concave portion 93 </ b> A of the second hinge member 93 at a high speed by the force from the sphere 97. As shown in FIG. 18, the click sound is generated when the convex portion 94 </ b> A of the striking member 94 collides with the concave portion 93 </ b> A of the second hinge member 93.

JP 2006-46583 A JP 2007-16813 A

When a so-called click sound is heard when opening and closing an electronic device such as a mobile phone, many users evaluate that the operability is good. With the technique of Patent Document 1, it is difficult to generate a click sound, and it is difficult to give the user an impression that the operability is good.
On the other hand, in the technique of Patent Document 2, since a click sound is generated, it is possible to give the user an impression that the operability is good.
However, the following problems arise.
A gap is formed between the convex portion 94 </ b> A of the striking member 94 and the concave portion 93 </ b> A of the second hinge member 93. Therefore, for example, when the hinge device 9 of Patent Document 2 is used for a mobile phone, rattling occurs between the display unit and the operation unit during opening and closing.

According to the present invention, a first housing and a second housing that are disposed adjacent to each other on an axis and are provided so as to be relatively rotatable about the axis as a rotation axis;
A first hinge portion disposed in the first housing with a gap that is rotatable relative to the first housing, and fixed in the first housing, relative to the first housing And a second hinge part biasing part disposed in the second casing and biasing the second hinge part toward the first casing along the rotation axis. And a rotational drive unit that rotationally drives the first hinge part in the first housing with respect to the first housing when the first housing and the second housing are rotationally driven relatively at a predetermined angle. There is provided a hinge device having a contact portion that contacts the inner surface of the first housing when the first hinge portion is rotationally driven by the rotational drive portion.

  According to such this invention, the 1st hinge part is arrange | positioned in the 1st housing | casing with the clearance gap which can rotate relatively with respect to a 1st housing | casing. In addition, the hinge device includes a rotation driving unit that rotates the first hinge portion in the first housing relative to the first housing when the first housing and the second housing are rotated at a predetermined angle. Have. Since the first hinge portion has a contact portion that comes into contact with the inner surface of the first housing when the first hinge portion is rotationally driven by the rotational drive portion, for example, the first housing is rotated by a predetermined angle with respect to the second housing. In this case, the abutting portion comes into contact with the first housing, and a click sound is generated.

Moreover, in this invention, the 2nd hinge part arrange | positioned in the 1st housing | casing is urged | biased by the 2nd hinge part urging | biasing part arrange | positioned in the 2nd housing | casing. And since the 2nd hinge part arrange | positioned in a 1st housing | casing is being fixed to the 1st housing | casing, even if it rotates a 1st housing | casing with respect to a 2nd housing | casing, for example, a 2nd hinge part is Then, the second hinge part urging unit is driven integrally with the first casing while being urged toward the first casing side. Thereby, rattling between the first housing and the second housing can be prevented.
As described above, according to the present invention, a click sound can be generated, and rattling between the first housing and the second housing can be prevented.

  ADVANTAGE OF THE INVENTION According to this invention, the click apparatus which can generate a click sound and can prevent shakiness and a mobile telephone which has this hinge apparatus can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the outline | summary of the hinge apparatus of this embodiment is demonstrated.
As shown in FIG. 1 and FIG. 2, the hinge device 1 constitutes a hinge portion of the mobile phone 2, and a pair of members (cases 22 and 23) are relatively rotated to form a pair of members (cases). 22 and 23). FIG. 2 is a cross-sectional view of the hinge device 1 configured to include the right first casing 11 and the second casing 12 among the pair of first casings 11 illustrated in FIG. 1. .
The hinge device 1 is disposed adjacent to the axis line, and is provided with a first casing 11 and a second casing 12 that are relatively rotatable about the axis line as a rotation axis L. The first hinge portion 13 is disposed with a gap that is rotatable relative to the first housing 11, and is fixed within the first housing 11, and rotates relatively with respect to the first housing 11. The second hinge portion 14 that is disabled and the second hinge portion urging portion that is disposed in the second housing 12 and urges the second hinge portion 14 toward the first housing 11 along the rotation axis L. 16 and the rotation which drives the 1st hinge part 13 in the 1st housing | casing 11 with respect to the 1st housing | casing 11 when the 1st housing | casing 11 and the 2nd housing | casing 12 rotate at a predetermined angle relatively. And a drive unit.
The first hinge portion 13 has an abutment portion 135 that abuts against the inner surface of the first housing 11 when the rotation is driven by the rotation drive portion (see FIG. 4).

Next, the hinge device 1 will be described in detail with reference to FIGS.
As shown in FIG. 1, the first housing 11 of the hinge device 1 is configured integrally with a case 22 on the display unit 21 side of the mobile phone 2.
As shown in FIG. 2, the first housing 11 has a bottomed cylindrical shape and opens toward the second housing 12. A first hole 111, a second hole 112, and a third hole 113 having different diameters are formed on the inner surface of the first housing 11 in a step shape. The diameter of the first hole 111 located on the second housing 12 side is larger than the diameter of the adjacent second hole 112, and the diameter of the second hole 112 is larger than the diameter of the adjacent third hole 113. Is also big. Each hole 111, 112, 113 has a flat shape. As shown in FIG. 5, the inner surface of the second hole 112 includes a pair of opposed flat portions 112A and a pair of arc portions 112B connecting the flat portions 112A.
Similarly, as shown in FIG. 7, the inner surface of the third hole 113 is also formed by a pair of flat portions 113A facing each other and a pair of arc portions 113B connecting the pair of flat portions 113A.
The arc portions 112B and 113B are arcs around the rotation axis L. The dimension between the pair of flat parts 112A and the dimension between the pair of flat parts 113A are smaller than the dimension between the pair of arc parts 112B passing through the rotation axis L and the dimension between the pair of arc parts 113B.
5 is a cross-sectional view in the BB direction of FIG. 2, and FIG. 7 is a cross-sectional view in the CC direction of FIG.

As shown in FIG. 2, the first hinge portion 13 is accommodated in the second hole 112 of the first housing 11. As shown in the plan views of FIGS. 3 and 4A, the first hinge portion 13 is formed in a ring shape with a circular hole formed in the center portion.
The planar shape of the first hinge part 13 will be described in detail. The first hinge part 13 has a flat shape, and the first hinge part 13 includes a pair of opposed flat parts 132 and an arc part connecting the flat parts 132. 131. The arc portion 131 is an arc centered on the rotation axis L. The dimension between the pair of flat portions 132 is smaller than the dimension between the pair of arc portions 131 passing through the rotation axis L.
When the first hinge part 13 is accommodated in the second hole 112 of the first housing 11, as shown in FIG. 5, the flat part 112 </ b> A of the second hole 112 and the flat part 132 of the first hinge part 13 In the meantime, a gap is formed between the arc portion 112B of the second hole 112 and the arc portion 131 of the first hinge portion 13. By this gap, the first hinge part 13 and the first housing 11 are relatively rotatable.

  Of the four corners formed by the flat portion 132 and the arc portion 131 of the first hinge portion 13, the rotation center of the first hinge portion 13 (in this embodiment, the rotation axis L is the rotation center). One pair of corners facing each other through the above-mentioned contact portion 135 is the contact portion 135 described above. Further, the other pair of corners facing each other through the rotation center of the first hinge portion 13 becomes a locking portion 134 locked to the inner surface of the second hole 112 of the first housing 11. The function of the locking part 134 will be described later in detail.

Further, as shown in FIG. 3 and FIGS. 4A and 4B, the first hinge portion 13 has a pair of protrusions that protrude toward the second housing 12 when accommodated in the second hole 112. A portion 133 is formed. FIG. 4B is a cross-sectional view in the DD direction of FIG. The pair of convex portions 133 are formed on the arc portion 131 side of the first hinge portion 13, and the pair of convex portions 133 are separated by 180 ° with the rotation axis L of the first housing 11 and the second housing 12 in between. Opposed to the position. Further, the pair of convex portions 133 are arranged on a circumference around the rotation axis L of the first housing 11 and the second housing 12.
Furthermore, the planar shape of the convex portion 133 is a substantially trapezoidal shape whose width dimension decreases toward the rotation center of the first hinge portion 13.
In addition, among the surfaces constituting the convex portion 133, the pair of side surfaces that are substantially orthogonal to the rotation direction of the first hinge portion 13 and that are opposed to each other are inclined surfaces, and the dimension between the pair of side surfaces is as follows: It becomes narrower toward the tip side of the convex 133 (see FIGS. 12 and 13). That is, it can be said that the cross section of the convex portion 133 along the rotation direction of the first hinge portion 13 has a tapered shape in which the width dimension decreases toward the tip of the convex portion 133.

As shown in FIGS. 2 and 3, the second hinge portion 14 is provided on the proximal end side of the insertion portion 141 and the insertion portion 141 into which the distal end is inserted into the hole of the ring-shaped first hinge portion 13. And a flange portion 142.
As shown in FIGS. 3, 6A, and 6B, the insertion portion 141 has a cylindrical shape, and a pair of convex portions 141A are formed at the tip. The planar shape of the convex portion 141A has a shape in which the width dimension is narrowed toward the rotation axis L. In the present embodiment, the planar shape is substantially a planar shape. The convex portions 141A are arranged to face each other by 180 ° so that the fan-shaped apexes face each other.
Such a pair of convex portions 141 </ b> A is disposed on a circumference around the rotation axis L of the first housing 11 and the second housing 12.
Of the surfaces constituting the convex portion 141A, the pair of side surfaces that are substantially orthogonal to the rotation direction of the first housing 11 and the second housing 12 and that are opposed to each other are inclined surfaces, and are between the pair of side surfaces. Is narrower toward the tip of the convex portion 141A (see FIG. 11). That is, it can be said that the cross section along the rotation direction of the first housing 11 and the second housing 12 of the convex portion 141A is a tapered shape whose width dimension decreases toward the tip of the convex portion 141A.
6A is a plan view of the second hinge portion 14, and FIG. 6B is a cross-sectional view in the EE direction of FIG. 6A.

The flange portion 142 is inserted into the third hole 113 of the first housing 11. The flange portion 142 has a flat shape, and has a pair of opposed flat portions 142A and a pair of arc portions 142B connecting the flat portions 142A. The arc portion 142B is an arc centered on the rotation axis L. The dimension between the pair of flat portions 142A is smaller than the dimension between the pair of arc portions 142B passing through the rotation axis L.
When the flange portion 142 is inserted into the third hole 113 of the first housing 11, a gap is formed between the arc portion 142B of the flange portion 142 and the arc portion 113B of the third hole 113 as shown in FIG. However, the flat portion 142A of the flange portion 142 and the flat portion 113A of the third hole 113 are in contact with each other. As a result, the second hinge portion 14 is fixed to the first housing 11. Accordingly, the second hinge portion 14 is driven integrally with the first housing 11 and is relatively unrotatable.

Again, as shown in FIG. 1, the second housing 12 of the hinge device 1 is configured integrally with the case 23 of the communication unit (keyboard 24 side) of the mobile phone 2.
As shown in FIG. 2, the second housing 12 has a hollow cylindrical shape and opens toward the first housing 11 side. As shown in FIG. 8, the inner surface of the second housing 12 has a pair of opposed flat portions 121 and a pair of arc portions 122 connecting the flat portions 121. 8 is a cross-sectional view in the AA direction of FIG.
As shown in FIG. 2, in the second housing 12, the first hinge portion 13 is biased toward the first housing 11 along the rotation axis L of the first housing 11 and the second housing 12. A first hinge portion biasing portion 15 and a second hinge portion for biasing the second hinge portion 14 toward the first housing 11 side along the rotation axis L of the first housing 11 and the second housing 12. A force portion 16 is disposed.
The first hinge portion biasing portion 15 and the second hinge portion biasing portion 16 are both coil-shaped springs, and the first hinge portion biasing portion 15 has a larger diameter than the second hinge portion biasing portion 16. It consists of a spring. A second hinge portion biasing portion 16 is disposed inside the first hinge portion biasing portion 15.

Between such a 1st hinge part urging | biasing part 15 and the 1st hinge part 13, as shown to FIG.2, 3, the 1st engagement engaged with the convex part 133 of the 1st hinge part 13 is carried out. Part 17 is arranged. Similarly, a second engagement portion 18 that engages with the convex portion 141 </ b> A of the second hinge portion 14 is disposed between the second hinge portion urging portion 16 and the second hinge portion 14.
As shown in FIGS. 3 and 9A and 9B, the first engagement portion 17 is configured in a ring shape, like the first hinge portion 13. FIG. 9A is a plan view of the first engaging portion 17, and FIG. 9B is a cross-sectional view in the FF direction of FIG. 9A.
The planar shape of the first engaging portion 17 is the same as the planar shape of the first hinge portion 13. A pair of recesses 171 are formed on the surface of the first engagement portion 17 on the first hinge portion 13 side. Since the convex portion 133 of the first hinge portion 13 is engaged with the concave portion 171, the concave portion 171 is provided according to the convex portion 133 of the first hinge portion 13. Specifically, the concave portion 171 is disposed so as to be opposed to a position separated by 180 °. In addition, the pair of recesses 171 are arranged on a circumference around the rotation axis L of the first casing 11 and the second casing 12.
Of the surfaces constituting the recess 171, the pair of side surfaces opposed to each other substantially perpendicular to the rotation direction of the first hinge portion 13 are inclined surfaces, and the width dimension between the pair of side surfaces is the first hinge portion. It spreads toward the 13th side. That is, the cross section along the rotation direction of the first hinge portion 13 of the concave portion 171 is a tapered shape whose width dimension decreases toward the bottom portion of the concave portion 171. Further, the concave portion 171 of the first engaging portion 17 is more Is also sandwiched between a pair of projecting portions 172 projecting to the first hinge portion 13 side.

As shown in FIGS. 3, 10A, and 10B, the second engagement portion 18 has a cylindrical shape, and a pair of recesses 181 are formed on the surface on the second hinge portion 14 side. 10A is a plan view of the second engaging portion 18, and FIG. 10B is a cross-sectional view in the GG direction of FIG. 10A.
The recesses 181 are arranged to face each other by 180 °. The pair of recesses 181 are arranged on a circumference around the rotation axis L of the first casing 11 and the second casing 12.
A pair of side surfaces that are substantially orthogonal to the rotation direction of the first housing 11 and the second housing 12 among the surfaces that form the recess 181 and that are opposed to each other are inclined surfaces. The dimensions are narrower toward the bottom side of the recess 181 (see FIGS. 12 and 13). That is, it can be said that the cross section of the recess 181 along the rotation direction of the first housing 11 and the second housing 12 has a tapered shape in which the width dimension decreases toward the bottom of the recess 181.
The convex portion 141A engages with the concave portion 181.
The pair of recesses 181 of the second engagement portion 18 is sandwiched between a pair of protrusions 182 that protrude toward the second hinge portion 14 from the bottom of the recess 181.

The first hinge portion urging portion 15, the second hinge portion urging portion 16, the first engagement portion 17, and the second engagement portion 18 are formed in a cylindrical case as shown in FIGS. 19 is housed. The case 19 is a bottomed cylinder that opens to the first housing 11 side. As shown in FIG. 8, the case 19 is fixed to the second housing 12. If it demonstrates in detail, the outer peripheral surface which comprises case 19 is comprised from a pair of flat part 191 which opposes, and a pair of circular arc part 192 which connects between this flat part 191. The arc portion 192 is an arc centered on the rotation axis L. The dimension between the pair of flat portions 191 is smaller than the dimension between the pair of arc portions 192 passing through the rotation axis L.
When the case 19 is inserted into the second housing 12, a gap is generated between the arc portion 122 of the second housing 12 and the arc portion 192 of the case 19, but the flat portion 121 of the second housing 12, The flat portion 191 of the case 19 comes into contact. As a result, the case 19 is fixed to the second housing 12.
The first hinge portion biasing portion 15 and the second hinge portion biasing portion 16 are fixed to the bottom portion of the case 19 as described above.
Therefore, when the second housing 12 is rotated to the first housing 11, the case 19, the first hinge portion urging portion 15 accommodated in the case 19, the second hinge portion urging portion 16, the first engagement The part 17 and the second engaging part 18 are rotationally driven together with the second housing 12.

Next, the rotation drive unit will be described.
As described above, when the first housing 11 and the second housing 12 are rotationally driven at a predetermined angle, the rotational driving unit moves the first hinge portion 13 in the first housing 11 to the first housing 11. The housing 11 is rotationally driven, and the contact portion 135 of the first hinge portion 13 is brought into contact with the inner surface of the first housing 11.
The rotational drive unit applies a force against the biasing force from the first hinge portion biasing portion 15 to the first hinge portion biasing portion 15 and the first hinge portion biasing portion 15 described above, and the first hinge A reaction force generation unit that generates a reaction force in the portion urging unit 15. Then, the first hinge portion 13 is rotationally driven with respect to the first housing 11 by the reaction force generated in the first hinge portion urging portion 15 by the reaction force generating portion.
Here, the reaction force generating portion includes the locking portion 134 of the first hinge portion 13, the convex portion 133, and the protruding portion 172 of the first engaging portion 17. As will be described in detail later, when the first housing 11 and the second housing 12 are relatively rotated, the locking portion 134 of the first hinge portion 13 is locked to the inner surface of the first housing 11. Further, when the first casing 11 and the second casing 12 are rotated relative to each other, the first casing 11 and the first hinge portion 13 are integrated to rotate relative to the second casing 12. Will be. At this time, the convex portion 133 of the first hinge portion 13 pushes the protruding portion 172 of the first engaging portion 17 toward the first hinge portion urging portion 15, and the first hinge portion urging portion 15 includes A reaction force will be generated.

In the above description, the hinge device 1 including the first housing 11 on the right side in FIG. 1 has been described. However, other hinge devices can also be formed by the first housing 11 and the second housing 12 on the left side in FIG. It is configured.
That is, a first hinge portion 13 and a second hinge portion 14 are housed in the first housing 11 on the left side of FIG. 1, and a case is placed on the left end portion of the second housing 12 in FIG. 19, a first hinge portion biasing portion 15, a second hinge portion biasing portion 16, a first engagement portion 17, and a second engagement portion 18 housed in the case 19 are housed.

Next, the opening / closing operation of the mobile phone 2 will be described with reference to FIGS.
When the user opens the mobile phone 2 in order to use a function such as a call or mail, the case 22 on the display unit 21 side is opened while the case 23 on the call unit (keyboard 24 side) is held and fixed.
At this time, since the case 23 on the communication unit side is fixed, the second housing 12 of the hinge device 1, the case 19 inside the second housing 12, the first hinge portion urging portion 15 inside the case 19, The two hinge part urging part 16, the first engaging part 17, and the second engaging part 18 do not move.
On the other hand, when the case 22 on the display unit 21 side is opened, the first housing 11 of the hinge device 1 formed integrally with the case 22 rotates.
Since the second hinge portion 14 inside the first housing 11 is fixed to the first housing 11, it is rotationally driven together with the first housing 11.

This will be described in detail with reference to FIG.
FIGS. 11A and 11B show a state before the case 22 on the display unit 21 side is opened. In this state, the convex portion 141A of the second hinge portion 14 is inserted into and engaged with the concave portion 181 of the second engaging portion 18.
Next, when the case 22 starts to be opened, the second hinge portion 14 is rotationally driven together with the first housing 11 as shown in FIG. At this time, as shown in FIG. 11 (d), when the second hinge portion 14 is driven to rotate, the inclined side surface of the convex portion 141 </ b> A of the second hinge portion 14 is inclined to the concave portion 181 of the second engaging portion 18. The second engagement portion 18 is gradually disengaged from the concave portion 181 as the side surface begins to slide. Thereby, the compressive force in the direction of the arrow starts to act on the second hinge portion urging portion 16.

Further, when the case 22 is opened, the second hinge portion 14 is further rotated together with the first housing 11 as shown in FIG. At this time, as shown in FIG. 11 (f), when the second hinge portion 14 is driven to rotate, the engagement between the convex portion 141 A of the second hinge portion 14 and the concave portion 181 of the second engaging portion 18 is The protrusion 141 </ b> A is completely released and comes into contact with the protruding portion 182 of the second engagement portion 18. Accordingly, the second hinge portion urging portion 16 is thereby compressed in the arrow direction.
Further, when the case 22 is rotated so that the case 22 is fully opened, the compression of the second hinge portion urging portion 16 is released and at the same time the convex portion 141A of the second hinge portion 14 and the second engagement. The concave portion 181 of the joint portion 18 is engaged.

On the other hand, since a gap is formed between the first hinge portion 13 in the first housing 11 and the first housing 11, even if the case 22 starts to be opened, immediately with the first housing 11. Does not rotate.
The movement of the first hinge portion 13 will be described in detail with reference to FIGS.
FIGS. 12A and 12B show a state before the case 22 on the display unit 21 side is opened. In this state, the convex portion 133 of the first hinge portion 13 is inserted into and engaged with the concave portion 171 of the first engaging portion 17.
Next, when the case 22 starts to be opened, the first casing 11 is driven to rotate, but a gap is formed between the first casing 11 and the first hinge portion 13. 13 does not rotate. Further, when the first housing 11 rotates, as shown in FIG. 12C, the locking portion 134 of the first hinge portion 13 comes into contact with the flat portion 112A on the inner surface of the first housing 11 and is locked. The Rukoto. At this time, as shown in FIG. 12D, the inclined side surface of the convex portion 133 of the first hinge portion 13 slides on the inclined side surface of the concave portion 171 of the first engaging portion 17, and the first hinge The convex part 133 of the part 13 will gradually deviate from the concave part 171 of the first engaging part 17. Then, a compressive force starts to act on the first hinge portion urging portion 15 in the arrow direction.

Further, when the case 22 is opened and the first housing 11 is rotationally driven, the first hinge portion 13 that is engaged with the first housing 11 together with the first housing 11 as shown in FIG. It will rotate. At this time, as shown in FIG. 13B, the engagement between the convex portion 133 of the first hinge portion 13 and the concave portion 171 of the first engaging portion 17 is completely released. And the convex part 133 of the 1st hinge part 13 contacts the upper surface of the protrusion part 172 adjacent to the recessed part 171 of the 1st engaging part 17. As shown in FIG. As a result, a compressive force in the direction of the arrow acts on the first hinge portion biasing portion 15, and a reaction force is generated on the first hinge portion biasing portion 15.
Thereafter, when the case 22 is fully opened, as shown in FIGS. 13C and 13D, the first hinge portion 13 is applied to the first housing 11 by the reaction force generated in the first hinge portion urging portion 15. And the locking by the locking part 134 is released, and the convex part 133 of the first hinge part 13 enters the concave part 171 of the first engaging part 17, and the convex part 133 and the concave part 171 are engaged. To do. At this time, the convex portion 133 slides on the inclined side surface of the concave portion 171 and the convex portion 133 is guided to the inclined side surface of the concave portion 171 so that the convex portion 133 and the concave portion 171 are engaged.
Then, the abutting portion 135 of the first hinge portion 13 comes into contact with the flat portion 112A of the first housing 11, and a click sound of “click” is generated.

When the user closes the mobile phone, a click sound is generated according to the same principle.
When the case 22 starts to close, the first hinge portion 13 does not rotate, and only the first housing 11 rotates together with the case 22. Thereby, the contact part 135 of the 1st hinge part 13 will leave | separate from the flat part 112A of the 1st housing | casing 11. FIG. Further, when the case 22 is rotated, the locking portion 134 of the first hinge portion 13 is locked to the flat portion 112A of the first housing 11, and the first hinge portion 13 and the first housing 11 are integrally formed. It starts to rotate. At this time, the engagement between the convex portion 133 of the first hinge portion 13 and the concave portion 171 of the first engaging portion 17 is released.
Thereafter, when the case 22 is further rotated, the first hinge portion 13 is rotated with respect to the first housing 11 by the reaction force generated in the first hinge portion urging portion 15, and the locking by the locking portion 134 is performed. Canceled. Then, the abutting portion 135 of the first hinge portion 13 comes into contact with the flat portion 112A of the first housing 11, and a click sound is generated.
Even when the user holds and fixes the case 22 on the display unit 21 side by hand and opens and closes the case 23 on the call unit (keyboard 24 side), a click sound is generated according to the same principle as described above. be able to.

Next, the effect of this embodiment is demonstrated.
A gap that is relatively rotatable is formed between the first hinge portion 13 and the first housing 11. And when the 1st housing | casing 11 and the 2nd housing | casing 12 are rotationally driven by the predetermined angle relatively, the 1st hinge part 13 in the 1st housing | casing 11 rotationally drives with respect to the 1st housing | casing 11, A contact portion 135 of one hinge portion 13 contacts the inner surface of the first housing 11. Thereby, a click sound can be generated.
Further, when the click sound is generated, the first hinge portion urging portion 15 is compressed to generate a reaction force, and the first hinge portion 13 is rotationally driven by this reaction force. The 13 contact portions 135 can be vigorously brought into contact with the inner surface of the first housing 11. Thereby, a click sound can be generated reliably.

The second hinge portion 14 disposed in the first housing 11 is biased by a second hinge portion biasing portion 16 disposed in the second housing 12. And since the 2nd hinge part 14 arrange | positioned in the 1st housing | casing 11 is being fixed to the 1st housing | casing 11, even if it rotates the 1st housing | casing 11 with respect to the 2nd housing | casing 12, it is 1st. The two hinge part urging parts 16 are driven integrally with the first casing 11 while being urged toward the first casing 11 side. Thereby, rattling between the first housing 11 and the second housing 12 can be prevented.
As described above, the hinge device 1 according to the present embodiment can generate a click sound and can further prevent rattling between the first housing 11 and the second housing.

  Furthermore, in this embodiment, the hinge apparatus 1 has the 1st engaging part 17 in which the recessed part 171 engaged with the convex part 133 of the 1st hinge part 13 was formed. The first engagement portion 17 is disposed between the first hinge portion 13 and the first hinge portion urging portion 15. In the state where the convex portion 133 of the first hinge portion 13 and the concave portion 171 of the first engaging portion 17 are engaged, no force is applied to the first hinge portion urging portion 15 in the compression direction. However, the engagement between the convex portion 133 of the first hinge portion 13 and the concave portion 171 of the first engaging portion 17 is released, and the convex portion 133 of the first hinge portion 13 is protruded portion 172 of the first engaging portion 17. By making it the non-engagement state which contacts the upper surface of this, the force of a compression direction can be applied to the 1st hinge part urging | biasing part 15 easily and reliably. Thereby, the force contrary to the urging | biasing force can be generated with respect to the 1st hinge part urging | biasing part 15, and a click sound can be generated reliably.

In the present embodiment, a locking portion 134 that is locked to the first housing 11 is formed in the first hinge portion 13. In a state where the locking portion 134 of the first hinge portion 13 is locked to the first housing 11, the first hinge portion 13 and the first housing 11 are integrated with the second housing 12. It will be rotationally driven. Therefore, by rotating the first housing 11 with respect to the second housing 12, the concave portion 171 of the first engaging portion 17 fixed to the second housing 12 and the first housing 11 are integrated. The engagement of the first hinge portion 13 that is driven to the convex portion 133 can be easily released.
Thereby, the force of a compression direction can be reliably applied with respect to the 1st hinge part urging | biasing part 15, and a click sound can be produced | generated reliably.

Moreover, in this embodiment, a pair of side surface substantially orthogonal to the rotation direction of the 1st hinge part 13 among the surfaces which comprise the convex part 133 of the 1st hinge part 13 is an inclined surface, A pair of side surface The dimension between them is narrower toward the tip end side of the convex portion 133 (the cross section along the rotation direction of the first hinge portion 13 of the convex portion 133 is tapered). On the other hand, among the surfaces constituting the recess 171 of the first engagement portion 17, the pair of side surfaces substantially orthogonal to the rotation direction of the first hinge portion 13 are inclined surfaces, and the width dimension between the pair of side surfaces is The first hinge part 13 is widened toward the first hinge part (the section along the rotation direction of the first hinge part 13 of the recess 171 is tapered).
As described above, the side surface of the convex portion 133 is an inclined surface, and the side surface of the concave portion 171 with which the convex portion 133 engages is also an inclined surface, so that the first hinge portion 13 rotates as the first housing 11 rotates. In doing so, the side surface of the convex portion 133 can be moved along the side surface of the concave portion 171, and the engagement between the convex portion 133 and the concave portion 171 can be easily released.
Further, by making the side surface of the convex portion 133 an inclined surface and also making the side surface of the concave portion 171 with which the convex portion 133 engages an inclined surface, the reaction force generated in the first hinge portion urging portion 15 is utilized, The first hinge portion 13 can be rotationally driven, and the convex portion 133 and the concave portion 171 can be easily engaged.

  Moreover, the hinge apparatus 1 has the 2nd engaging part 18 in which the recessed part 181 engaged with the convex part 141A of the 2nd hinge part 14 was formed. In the state where the convex part 141A of the second hinge part 14 and the concave part 181 of the second engaging part 18 are engaged, no force is exerted on the second hinge part urging part 16 in the compression direction. , The engagement between the convex portion 141A of the second hinge portion 14 and the concave portion 181 of the second engaging portion 18 is released, and the convex portion 141A of the second hinge portion 14 of the protruding portion 182 of the second engaging portion 18 is released. By contacting the upper surface, a force in the compression direction can be applied to the second hinge portion urging portion 16, and a force against the urging force is generated. As a result, the second hinge portion urging portion 16 urges the second hinge portion 14 toward the first housing 11 with a stronger force, and the second hinge portion 14 is securely fixed in the first housing 11. The Rukoto. Therefore, it is possible to reliably suppress the occurrence of rattling between the first housing 11 and the second housing 12 in the middle of opening and closing the cases 22 and 23 of the mobile phone 2.

Further, in the present embodiment, the first hinge portion 13 is formed in a ring shape, and the second hinge portion 14 is provided with an insertion portion 141 that is inserted into the hole of the first hinge portion 13 and a flange portion 142. . By doing in this way, the installation of the 1st hinge part 13 and the 2nd hinge part 14 does not take a place, but size reduction of the hinge apparatus 1 can be achieved.
Similarly, the hinge device 1 can be reduced in size by installing the second engagement portion 18 in the hole of the ring-shaped first engagement portion 17.
The hinge device 1 can also be reduced in size by installing the second hinge portion urging portion 16 inside the first hinge portion urging portion 15.

Furthermore, in the present embodiment, the contact portion 135 is brought into contact with the flat portion 112A of the first housing 11 to generate a click sound, so that a gap between the contact portion 135 and the flat portion 112A is not generated. The volume of the click sound can be adjusted by adjusting the distance. When the distance of the gap between the contact part 135 and the flat part 112A is increased, the click sound increases, and when the distance of the gap between the contact part 135 and the flat part 112A is reduced, Click sound is reduced.
In the present embodiment, the second hinge portion 14 fixed in the first housing 11 is attached to the first housing 11 side by the second hinge portion urging portion 16 disposed in the second housing 12. Therefore, even if the distance between the contact portion 135 and the flat portion 112A is adjusted, it is possible to prevent rattling between the first housing 11 and the second housing 12.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, the convex portion 133 is formed on the first hinge portion 13 and the concave portion 171 is formed on the first engaging portion 17. However, the present invention is not limited thereto, and the concave portion is formed on the first hinge portion. A convex portion may be formed in one engaging portion.
Similarly, the convex portion 141A is formed on the second hinge portion 14, and the concave portion 181 is formed on the second engaging portion 18. However, the concave portion is formed on the second hinge portion, and the convex portion is provided on the second engaging portion. May be.
Further, the first hinge portion 13 has a pair of convex portions 133 formed at positions 180 ° apart on the circumference around the rotation axis L of the first housing 11 and the second housing 12. Not limited to this, the number of convex portions may be three or more. A plurality of convex portions may be formed at equal intervals on the circumference around the rotation axis L of the first housing 11 and the second housing 12.
Moreover, the convex part 133 of the 1st hinge part 13 and the convex part 141A of the 2nd hinge part 14 may be one.
In addition, what is necessary is just to form the recessed part of a 1st engaging part according to the convex part of a 1st hinge part.

Further, the first hinge portion 13 has a ring shape, and the insertion portion 141 of the second hinge portion 14 is inserted into the hole of the first hinge portion 13. Is not limited to this.
Furthermore, in the said embodiment, although the hinge apparatus 1 was mounted in the mobile telephone, you may mount not only in this but in another electronic device. For example, you may mount in a digital camera, a personal computer, etc.

It is a perspective view which shows the mobile telephone concerning one Embodiment of this invention. It is sectional drawing which shows a hinge apparatus. It is a disassembled perspective view which shows the principal part of a hinge apparatus. (A) is a top view which shows the 1st hinge part of a hinge apparatus, (b) is sectional drawing of the DD direction of (a). It is sectional drawing which shows the principal part of a hinge apparatus. (A) is a top view which shows the 2nd hinge part of a hinge apparatus, (b) is sectional drawing of the EE direction of (a). It is sectional drawing which shows the principal part of a hinge apparatus. It is sectional drawing which shows the principal part of a hinge apparatus. (A) is a top view which shows the 1st engaging part of a hinge apparatus, (b) is sectional drawing of the FF direction of (a). (A) is a top view which shows the 2nd engaging part of a hinge apparatus, (b) is sectional drawing of the GG direction of (a). It is a figure which shows the drive state of the 2nd hinge part of a hinge apparatus. It is a figure which shows the drive state of the 1st hinge part of a hinge apparatus. It is a figure which shows the drive state of the 1st hinge part of a hinge apparatus. It is sectional drawing which shows the conventional hinge apparatus. It is sectional drawing which shows the conventional hinge apparatus. It is sectional drawing which shows the conventional hinge apparatus. It is sectional drawing which shows the conventional hinge apparatus. It is sectional drawing which shows the conventional hinge apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hinge apparatus 2 Cellular phone 8 Hinge apparatus 9 Hinge apparatus 11 1st housing | casing 12 2nd housing | casing 13 1st hinge part 14 2nd hinge part 15 1st hinge part biasing part 16 2nd hinge part biasing part 17 1st One engagement portion 18 Second engagement portion 19 Case 21 Display portion 22 Case 23 Case 24 Keyboard 81 Fixed body 82 Movable body 85 Fixed cam 85A Inclined portion 85B Protruding portion 85C Inclined portion 86 Movable cam 91 Hinge shaft 92 First hinge member 93 Second hinge member 93A Concave portion 94 Impact member 94A Convex portion 94B Concave portion 94B1 Slope 94B2 Opposing surface 95 Movable member 96 Energizing means 97 Sphere 111 First hole 112 Second hole 112A Flat portion 112B Arc portion 113 Third hole 113A Flat part 113B Arc part 121 Flat part 122 Arc part 131 Arc part 132 Flat part 133 Convex part 134 Locking part 135 Part 141 insertion portion 141A protruding portion 142 flange portion 142A flat portion 142B arcuate portion 171 recess 172 protrusion 181 recess 182 protrusion 191 flat part 192 arc portion L rotary shaft

Claims (8)

A first housing and a second housing, which are arranged adjacent to each other on an axis, and are relatively rotatable about the axis as a rotation axis;
A first hinge portion disposed in the first housing with a gap that is rotatable relative to the first housing;
A second hinge portion fixed in the first housing and relatively non-rotatable with respect to the first housing;
A second hinge portion biasing portion disposed in the second casing and biasing the second hinge portion toward the first casing along the rotation axis;
A rotation drive unit configured to rotate the first hinge part in the first case relative to the first case when the first case and the second case are relatively rotated by a predetermined angle; And
The hinge device has a contact portion that contacts the inner surface of the first housing when the first hinge portion is rotationally driven by the rotational drive portion. The hinge device according to claim 1, wherein
The rotation drive unit is disposed in the second housing, and a first hinge portion urging portion that urges the first hinge portion toward the first housing along the rotation axis;
A reaction force generator that applies a force against the urging force from the first hinge portion urging portion to the first hinge portion urging portion to generate a reaction force on the first hinge portion urging portion; ,
A hinge device that rotationally drives the first hinge portion with respect to the first housing by a reaction force generated in the first hinge portion urging portion by the reaction force generating portion. The hinge device according to claim 2, wherein
Between the first hinge portion urging portion and the first hinge portion, there is provided a first engagement portion that is fixed to the second housing and engageable with the first hinge portion. ,
The reaction force generating portion is configured to include the first hinge portion and the first engaging portion, and by bringing the first hinge portion and the first engaging portion into a disengaged state, Generate a reaction force in the first hinge part biasing part,
A hinge that causes the first hinge portion to rotate with respect to the first housing and simultaneously engages the first hinge portion and the first engagement portion by the reaction force generated in the first hinge portion urging portion. apparatus. The hinge device according to claim 3, wherein
The first casing and the second casing are provided on each of a pair of members,
The hinge device is configured to open and close the pair of members by relatively rotating the pair of members.
The reaction force generating portion is formed in the first hinge portion, and when the first housing and the second housing are relatively rotated to a certain angle smaller than the predetermined angle, It is configured to include a locking portion that is locked to the first housing,
A hinge device in which a convex portion or a concave portion formed in the first hinge portion engages with a concave portion or a convex portion formed in the first engaging portion when the pair of members are closed and opened. The hinge device according to claim 4, wherein
The cross section along the rotation direction of the first hinge part of the convex part is a tapered shape whose width dimension narrows toward the tip of the convex part,
The cross-section along the rotation direction of the first hinge portion of the concave portion is a hinge device having a tapered shape in which a width dimension becomes narrower toward the bottom portion of the concave portion. The hinge device according to any one of claims 3 to 5,
Between the second hinge portion urging portion and the second hinge portion, a second engagement portion that engages with the second hinge portion is disposed,
One of the first hinge part and the second hinge part is ring-shaped, and the other is provided with an insertion part whose tip is inserted into the hole of the one ring-shaped hinge part,
Of the first engagement portion and the second engagement portion, one engagement portion that engages with the one ring-shaped hinge portion is formed in a ring shape, and the other engagement portion is formed in one ring shape. The hinge device to be inserted into the hole of the engaging portion. The hinge device according to claim 6,
One of the first hinge part urging part and the second hinge part urging part is interposed through one ring-shaped engagement part of the first engagement part and the second engagement part. , A large-diameter spring that biases any one of the ring-shaped hinge portions of the first hinge portion and the second hinge portion,
The other of the first hinge part urging part and the second hinge part urging part is via the other engagement part of the first engagement part and the second engagement part. A small-diameter spring that biases the other hinge portion of the first hinge portion and the second hinge portion;
The small diameter spring is a hinge device arranged inside the large diameter spring.   A mobile phone having the hinge device according to claim 1.

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