JP2010133494A - Hinge device and electronic equipment using hinge device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an innovative hinge device in which a cam component of a cam mechanism with a recess and cam lobe does not break, the lobe gets out of the recess early in a rotational position of 35 degrees or less to generate rotational energization by a down-gradient sliding part while ensuring a smooth rotation, and sufficient rotational energization can be generated by lowering the crest of the climbing slope of the recess without making the up-gradient value steeper than or equal to the limit gradient slope. <P>SOLUTION: The hinge device is structured so that a rotating angle at which the cam lobe 10 of the cam mechanism gets out of the recess 11 is 35 degrees or less, and the down-gradient of the inter-recess sliding part 12 up to approximately 90 degrees from getting out of the recess 11 is made greater than or equal to the down-gradient of the farther sliding range, whereby the rotational energization varies before and after a position where the rotating angle is approximately 90 degrees. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention, for example, is a hinge that pivotally attaches a main body part provided with an operation part and a superposed part provided with a display part so that the superposed part is turned upside down and turned into an open state from a superposed polymerized closed state. The present invention relates to a device and an electronic device such as a mobile phone, a mobile or a notebook computer using the hinge device.

  In an electronic device that opens and closes the overlapping part with respect to the main body part such as a foldable mobile phone or a notebook personal computer, the main part is the first member, and the overlapping part is the second member. The following hinge device is employed.

  For example, such an up-and-down rotation type hinge device has a rotation shaft portion on one of a first connection portion provided on the first member and a second connection portion provided on the second member, and the rotation shaft portion on the other side. A bearing portion that is connected to be rotatable is provided so as to be rotatable. However, the rotation position is click-held at a predetermined rotation position, or a closing bias or an opening bias (rotation bias). ), A hinge device incorporating a cam mechanism is employed.

  Specifically, a cam part and a cam engaging part are provided on the rotating shaft part or the bearing part, and one of them is provided so as to rotate together with the first member, and the other is provided so as to rotate together with the second member. When the cam portion and the cam engaging portion rotate relative to each other as the second member rotates with respect to the first member, a convex portion and a concave portion are provided on the mutually opposite inner surfaces that serve as the mating surfaces. The rotation position is click-held by engaging the concave and convex portions with the concave and convex portions.

  More specifically, for example, a cam portion is provided in a co-rotating state integrally with a first connecting portion that is coupled to the first member in a co-rotating state, and the first connecting portion and a rotating shaft portion protruding from the cam portion are rotated. Freely and slidably movable cam engaging portion is provided, and this cam engaging portion is slidable to a second connecting portion (for example, a cylindrical case portion) provided in a corotating state with the second member, and is prevented from rotating. The rotating shaft portion is rotatably inserted into the second connecting portion (in the cylindrical case portion) and the cam engaging portion, and these are used as a bearing portion. An engagement biasing spring (engagement biasing mechanism) is provided in the cylindrical case portion together with the cam engagement portion, and the cam engagement portion is pressed against the cam portion so as to urge the concave and convex portions.

  Therefore, when the second member is rotated upside down with respect to the first member, the second connecting portion and the cam engaging portion provided in a co-rotating state with respect to the first connecting portion and the cam portion provided thereon are provided. The protrusion of the cam portion and the recess of the cam engagement portion engage with each other at the open rotation position. (Strictly speaking, the stopper does not reach the bottom of the recess and is in the middle of the sloping inclined portion just before it. Is configured to be held by clicking).

  For example, the convex part and the concave part are provided in two opposing positions that are 180 degrees out of phase, and the opposing surfaces of the cam part and the cam engaging part are provided in a rotationally symmetrical shape. For example, the first member and the second member At the superposition closed position where the overlapped, the cam engagement portion is engaged and biased (pressed) against the cam portion by the engagement biasing mechanism in the middle of the concave and convex engagement, and the convex portion tends to fall into the concave portion. A suction force is generated, and a closing bias is generated.

  Further, when the second member is swung up and down from 0 ° to about 45 ° in the overlapped closed state, the cam engaging portion rotates relative to the cam portion, and the convex portion from the concave portion resists the engagement biasing mechanism. Climb up and get out of the recess, and the recess is pressed against the sliding part between the recesses by the engagement biasing mechanism, so that rotation resistance (torque) is generated and it does not fluctuate during rotation. It is also possible to realize a free stop in which the rotation position is maintained at a position where the so-called hand is released by increasing the torque, and the sliding portion is lowered and inclined to provide an open bias (with rotation) And the convex part engages with the concave part at the 170 degree position just before 180 degrees, but strictly speaking, as described above, the stopper is at 165 degree just before this. Over rotation is prevented by the Open state without also fluctuate urging open is caused by the suction force by becoming is configured to be clicked held.

  That is, the cam mechanism automatically generates a closing bias when the polymerization is closed. When the cam mechanism rotates against this, the convex portion rises from the concave portion in the middle of rotation (45 degrees), and the closing bias is automatically generated. In this case, torque is generated by the pressure contact of the convex portion, or conversely, the convex portion is lowered and pressed against the inclined surface to generate an open bias to automatically rotate, or This rotational position is configured to be click-held when finally opened.

  The cam part provided with the convex part and the cam engaging part provided with the concave part are each configured by a resin molded part so that such a function occurs, but ascending from the concave part to the next concave part as described above. A sliding portion between the concave portion and the concave portion is provided on the downwardly inclined surface, and the convex portion is pressed against the downwardly inclined surface by an engagement urging mechanism such as an engagement urging spring to generate a rotational urging force. If the undulation reversal rotation operation is lightened or configured to rotate automatically, this rotation bias is desired to occur early, but the rotation position where the convex part is removed from the concave part can be reduced. Conventionally, it is close to 45 degrees.

  In other words, in order to generate a sufficient closing bias in the overlapped state of the polymerization, the convex portion rises to the middle of the inclined portion at the 0 degree position, and is compared with the closing force due to the weight of the overlapping portion and this suction force. Even if it does not provide a superposition locking mechanism, the superposition part is configured not to fluctuate and open, but when the convex part rises from this concave part and climbs the inclined part and tries to get over the top part, the concave part escape position is 45 degrees or less. The climb slope of the climb slope portion must be further steep.

  Therefore, if the convex part tries to escape from the concave part at 35 degrees or less, the upward inclination of the concave part will become extremely tight if it tries to secure a sufficient closing bias or a click holding force in the open state. When the part cannot climb up the concave part and cannot rotate up and down, or it does not rotate smoothly, or the cam part or cam engaging part forming part is damaged or broken by forcibly rotating (The slope of the climbing slope will exceed the limit slope).

  Therefore, if the position to escape from the concave portion is set to 35 degrees or less, the slope of the inclined portion will eventually become tighter than the limit inclination, and therefore the height of the top of the inclined portion will be lowered. The depth of the concave portion must be reduced, and therefore the downward inclined surface of the sliding portion between the concave portion and the concave portion must be made gentle so that the necessary rotation bias cannot be generated. End up.

  Therefore, in the past, the concave portion was deepened to ensure the closing bias and click holding force by the convex portion and the concave portion, and considering this limit inclination, the rotation operation was sufficiently lightened or automatically rotated. When a large rotational bias is desired, the position where the convex part is removed from the concave part is forced to be about 45 degrees. Therefore, the convex part finally comes out of the concave part at the 45 degree position, and the sliding part inclined downward from here. Is configured to generate a rotation bias. In other words, the superposed portion must be lifted up to 45 degrees against the closing bias, and the rotation bias is not generated until 45 degrees.

  The present invention has found such a problem in the conventional cam mechanism and solved it, and the inclination of the rising part of the concave part does not become a steep inclination exceeding the limit inclination, but the rotation The cam parts that make up the recesses and projections are not damaged, and the cam parts that make up the recesses and projections are not damaged. Rotation bias is generated by the sliding part that falls off and falls, and the top of this recessed part is lowered and the top part of the inclined part is lowered so that the rising inclination is not steeply inclined beyond the limit inclination. From the position where the weight of the overlapped portion is lowered to a position of approximately 90 degrees where the weight of the overlapped portion is applied, the inclination is suddenly increased to generate a large rotation bias. In the rotation range, the lower slope is more gentle than this Therefore, the position where the concave part is removed is set to 35 degrees or less so that the rotational bias is generated instead of the closing bias. It is an object of the present invention to provide an extremely innovative hinge device and an electronic device using the hinge device that can obtain sufficient rotation bias even if set to.

  The gist of the present invention will be described with reference to the accompanying drawings.

  The first member 1 and the second member 2 are brought into an open state by turning the second member 2 up and down with respect to the first member 1 from the overlapped closed state obtained by superposing the first member 1 and the second member 2. Is provided with a convex portion 10 on one of a first connecting portion 3 connected to the first member 1 and a second connecting portion 4 connected to the second member 2. The cam engaging portion 8 provided with the concave portion 11 that engages with the convex portion 10 of the cam portion 7 by providing relative rotation to the other cam portion 7 is provided in the common rotating state. At least one of the cam portion 7 and the cam engagement portion 8 is provided in the co-rotating state and slidably movable in the engagement / disengagement direction which is the rotation axis direction. The cam portion 7 or the cam engagement portion 8 is engaged. An engagement urging mechanism 9 for urging in the mating direction is provided, and the cam engaging portion 8 is provided with the concave portion 11 in which the convex portion 10 falls and engages. And the relative rotation, so that the convex portion 10 is removed from the concave portion 11 against the engagement biasing mechanism 9 until the convex portion 10 is engaged with the concave portion 11 again. 10 is provided with a sliding portion 12 that is pressed and slid by engagement biasing of the engagement biasing mechanism 9, and this sliding portion 12 is inclined downward toward the concave portion 11 to which the convex portion 10 is next engaged. In a hinge device that is provided on an inclined surface that is configured to generate a rotation bias by the engagement bias mechanism 9, the rotation angle in a superposed closed state in which the first member 1 and the second member 2 are overlapped When the second member 2 is rotated with respect to the first member 1, the convex part 10 climbs up the concave part 11, climbs over the inclined part 13 and is released from the concave part 11. The concave portion 11 is formed so that the rotational angle of the moving position is 35 degrees or less, and the downward inclined surface of the sliding portion 12 is not changed in this inclination degree. The lower slope of the turning range until the turning angle is approximately 90 degrees after the convex part 10 is removed from the recessed part 11 is less than the lower slope of the further turning range. The hinge device is characterized in that it is formed so that the rotation bias changes before and after the rotation angle is approximately 90 degrees.

  In addition, the cam portion 7 is provided with the two convex portions 10, and the cam engaging portion 8 is provided with the two concave portions 11 that are engaged with the two convex portions 10, respectively. The concave portion 11 is also provided on the opposing surface of the cam portion 7 or the cam engaging portion 8 at an opposite position that is 180 degrees out of phase, and the sliding portion 12 that is the downward inclined surface is provided between the two concave portions 11. The hinge device according to claim 1 is characterized in that.

  Further, when the convex portion 10 provided on the cam portion 7 is relatively rotated, the convex portion 10 that rises and engages the climbing inclined portion 13 of the concave portion 11 is lowered, and the top portion of the rising inclined portion 13 is When it gets over, the sliding portion 12 having the downward inclined surface is brought into pressure contact with the urging force of the engaging urging mechanism 9 to generate the rotational urging force. It is configured so as to fall into and engage with the concave portion 11, and by increasing the climbing inclination of the climbing inclined portion 13, the rotation angle of the position where the convex portion 10 is released from the concave portion 11 becomes 35 degrees or less. The concave portion 11 is formed as described above, and the height of the climbing slope portion 13 is lowered so that the climb slope of the climb slope portion 13 is smaller than the limit slope that cannot be climbed. 11 is formed. This relates to the hinge device described in item 1.

  Moreover, the main body part provided with the operation part is the first member 1 or the second member 2, and the superposition part provided with the display part superposed on the main part is the second member 2 or the first member 1. The hinge and the overlapping portion are pivotally attached by the hinge device according to any one of claims 1 to 3 so that the undulation and reversal rotation from the overlapped closed state is brought into an open state. The present invention relates to an electronic device using the apparatus.

  Since the present invention is configured as described above, the inclination of the rising slope of the concave portion does not become steep so as to exceed the limit inclination, and the concave portion or the convex portion cannot be rotated or difficult to rotate. The cam part is not damaged, and smooth rotation is always maintained, but at the rotation position of 35 degrees or less, the convex part comes off from the concave part at an early stage, and the rotation is performed by the inclined sliding part. 90 degree position where the weight of the overlapped part is applied from the position where it is removed from the recessed part without lowering the top part of the rising part of the rising part of the recessed part and making the rising inclination steeply inclined beyond the limit inclination. Until the drop slope is steep and a large turning bias is generated. Conversely, in the turning range from approximately 90 degrees or more where the weight of the overlapping portion is applied in the turning direction, the falling slope is made gentler than this. Efficient as a smaller rotation bias is acceptable By generating the dynamic bias, even if the position where the recess is removed is set to 35 degrees or less and the position where the rotational bias is generated instead of the closing bias is set early, sufficient rotational bias can be obtained. This is an extremely innovative hinge device and an electronic device using the hinge device.

  Moreover, in invention of Claim 2, 3, it becomes a more excellent hinge apparatus in which the said effect | action and effect are exhibited more favorably.

  Embodiments of the present invention that are considered suitable (how to carry out the invention) will be briefly described with reference to the drawings, illustrating the operation of the present invention.

  In the overlapped closed state in which the second member 2 is superposed on the first member 1 (rotation angle 0 degree), the convex portion 10 of the cam portion 7 and the concave portion 11 of the cam engaging portion 8 are in the middle of the concave-convex engagement and are closed. There is a momentum.

  That is, the convex portion 10 is in the middle of the upward inclined portion 13 of the concave portion 11, and the convex portion 10 is in the middle of being lowered at the position of the engaging bias by the engaging biasing mechanism 9 and the upward inclined portion 13. The return rotation bias is generated.

  From this state, when the second member 2 is turned upside down with respect to the first member 1, the cam portion 7 and the cam engaging portion 8 are separated from each other against the engagement biasing mechanism 9, and the convex portion 10 is formed in the concave portion 11. Ascending and climbing up the inclined part 13 and overcoming this top part, it is released from the concave part 11, and until the next concave part 11 is engaged and urged by the engagement urging mechanism 9, and the convex part 10 comes into pressure contact with the sliding part 12. .

  Since the sliding portion 12 is formed on a downwardly inclined surface, the rotating force is generated by the engaging bias by the engaging biasing mechanism 9 so that the rotating operation is lightened or automatically rotated. can do.

  However, the concave portion 11 cannot be shallow in order to ensure the closing bias or the click holding force in the open state due to the concave-convex engagement. Therefore, while keeping the recess 11 deep, the slope 10 of the sliding portion 12 after the projection 10 engaging with the recess 11 is removed from the recess 11 is sufficiently lowered so that the necessary rotation bias is generated. In order to make the inclined surface at a degree, the position where the convex portion 10 is removed from the concave portion 11 as in the conventional configuration must be 45 degrees or more as already described.

  That is, as shown in FIG. 9, if the angle is smaller than 35 degrees, the climbing slope of the slope 11 and the climbing slope of the sloped part 13 must be steeply increased, and there is a risk of exceeding the limit slope that can no longer climb. Because.

  However, according to the present invention, even if the rotation angle is smaller than this, for example, 25 degrees, it is possible to remove the recess 11 and cause the sliding portion 12 to generate the necessary rotation bias from the early 25 degrees.

  That is, if the angle is smaller than 35 degrees, the climbing slope of the climbing slope portion 13 increases, but the height of the top of the climbing slope section 13 (depth of the recess 11) is lowered (shallow), and the climbing slope is increased. Part 13 is less steep than the limit slope.

  On the other hand, if the degree of inclination of the downward inclined surface of the sliding portion 12 is constant as in the prior art, this does not cause sufficient rotation bias, but in the present invention, as shown in FIG. The conventional fixed concept is broken, and the downward inclination of the sliding portion 12 is not made constant, and the rotational bias is made to be a fairly steep downward inclined surface up to about 90 degrees where a large rotational bias is required. In the range of rotation beyond this, a gentle and small rotation bias may be sufficient (flat and zero), and the inclination of the sliding part 12 can be efficiently adjusted to around 90 degrees as required. It is changed with.

  That is, the rotation resistance is rotated until the weight of the member that rotates upside down (for example, the second member 2 relative to the first member 1) is raised, but it is around 90 degrees, in other words, the member that rotates is raised. In the state (upright state), almost no self-weight becomes rotation resistance, and if it exceeds this, rotation is conversely promoted, so the downward inclination of the sliding portion 12 is about 90 degrees, that is, until the rising state is reached. The rotation range is steeper than the further rotation range so that a large rotation bias is generated, and the rotation range may be smaller than that. Lowering the height of the top of the rising slope 13 and setting the rotation position of the top of the climbing slope 13 to 35 degrees or less, the rotation bias starts to take effect quickly, yet climbing up the slope 13 is steeper than the limit slope In addition, a necessary large urging force is generated, and the electronic device using the epoch-making hinge device and the hinge device that can lighten the operation and can also realize automatic rotation.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In the present embodiment, a main body portion provided with an operation portion such as a foldable mobile phone is referred to as a first member 1, and a superposition portion provided with a display portion superposed thereon is referred to as a second member 2. The present invention is applied to a hinge device in which end portions are pivotally attached to the two members 2 so as to be rotatable upside down.

  Specifically, the basic configuration of the hinge device of the present embodiment is the same as the configuration example described in the conventional example, and is an embodiment in which the present invention is applied to the type of the conventional example.

  That is, the rotation shaft portion 5 is provided on one of the first connection portion 3 provided on the first member 1 and the second connection portion 4 provided on the second member 2, and the rotation shaft portion 5 is relatively rotatable on the other. The bearing portion 6 to be connected is provided so as to be pivotally connected. Specifically, the cam portion 7 and the cam engagement portion 8 are provided on the rotation shaft portion 5 or the bearing portion 6 and one of them is the first. It is provided so as to rotate together with the member 1, and the other is provided so as to rotate together with the second member 2, and the cam portion 7 and the cam engaging portion 8 are used for the rotation of the second member 2 relative to the first member 1. Accordingly, when the relative rotation is performed, the convex portion 10 and the concave portion 11 are provided on the inner facing surfaces as the mating surfaces, and the convex portion 10 and the concave portion 11 are engaged with each other so that the rotation position is clicked. It is configured to be retained.

  More specifically, in this embodiment, the cam portion 7 is integrated with the first connecting portion 3 which is engaged with the mounting hole provided in the first member 1 serving as the main body portion 1 in a non-rotating state and connected in a co-rotating state. The rotation shaft portion 5 is protruded so as to be non-rotatable or rotatable so as to penetrate the cam portion 7 provided in the first connecting portion 3, and the rotation shaft portion 5 is made rotatable. A cam engagement portion 8 is provided which is slidably movable relative to the cam portion 7, and the cam engagement portion 8 is connected to the second member 2 serving as the overlapping portion 2 in a co-rotating state. Provided to the part 4 (tubular case part 4) in a non-rotating state.

  That is, in this embodiment, the cylindrical case portion 4 as the second connecting portion 4 is provided in the mounting hole of the second member 2 in a non-rotating state, and the cam engaging portion 8 is slidable in the cylindrical case portion 4. The rotation shaft portion 5 is rotatably inserted into the second connecting portion 4 (in the cylindrical case portion 4) and the cam engaging portion 8 so as to be a bearing portion 6. A spring as an engagement urging mechanism 9 is provided together with the cam engaging portion 8 in the cylindrical case portion 4 which is the second connecting portion 4 and serves as the bearing portion 6, and the cam engaging portion 8 is connected to the cam portion 7. It is configured to press and urge the concave-convex engagement.

  Therefore, when the second member 2 is turned upside down with respect to the first member 1, the second connecting portion 4 and the cam portion 7 provided integrally with the first connecting portion 3 and the first connecting portion 3 are prevented from rotating. The cam engaging portion 8 provided on the cam portion 8 rotates, and the convex portion 10 of the cam portion 7 and the concave portion 11 of the cam engaging portion 8 engage with each other at the open rotation position. In this way, it is configured so that it is prevented from being over-rotated by a stopper in the middle of the falling inclined portion 14 and is held by clicking.

  In this embodiment, both the convex portion 10 and the concave portion 11 are provided at two opposing positions that are 180 degrees out of phase, and the cam portion 7 and the cam engaging portion 8 are engaged with the concave and convex opposing surfaces in a rotationally symmetrical shape. In the overlapped closing position (0 degree) where the first member 1 and the second member 2 are overlapped, the cam engaging portion 8 is engaged with the cam portion 7 by the engaging biasing mechanism 9 in the middle of the uneven engagement. Is biased (pressed) to generate a suction force that causes the convex portion 10 to fall into the concave portion 11.

  Further, when the second member 2 is swung up and down from 0 degrees, the cam engaging portion 8 rotates relative to the cam portion 7 and the convex portion 10 rises against the engaging biasing mechanism 9 from the concave portion 11. The projections 10 are removed from the climbing recesses 11, and each projection 10 is further biased to open by being brought into pressure contact with each sliding portion 12 formed as a downward inclined surface to the other recess 11 facing the engagement biasing mechanism 9. (Rotation bias) is generated.

  More specifically, in this embodiment, the convex portion 10 is detached from the concave portion 11 against the engagement biasing mechanism 9 by relative rotation, and the convex portion 10 is again put in the other concave portion 11. A sliding portion 12 is provided at a rotationally symmetric position between the concave portions 11 so that the convex portion 10 is pressed and slid by the engagement bias of the engagement biasing mechanism 9 until it is engaged. 12 is provided on the inclined surface inclined downward toward the concave portion 11 to which the convex portion 10 is engaged next, and the biasing force of the engaging biasing mechanism 9 is generated. The concave portion 11 is formed so that the rotational angle of the rotational position that has climbed up and climbed over the inclined portion 13 and removed from the concave portion 11 is 35 degrees or less, and the downward inclined surface of the sliding portion 12 is A slope with a constant slope that does not change the slope is not used, and a downward slope from the turning angle to about 90 degrees after the convex part 10 is removed from the concave 11 is And greater than downward inclination of the further rotation range, the rotationally biased before and after the position of the rotation angle is approximately 90 degrees are formed so as to vary.

  That is, in this embodiment, the rotation angle at the position where each of the two convex portions is removed from the two concave portions 11 is set to 35 degrees or less, but specifically, 25 degrees.

  Then, the sliding portion 12 formed as a downward inclined surface to which the convex portion 10 is pressed is set to approximately 90 degrees, for example, 85 degrees to 95 degrees, at which the weight of the second member 2 hardly becomes a rotational resistance. The inclination of the sliding portion 12 is configured to change from a steep inclination to a gentle inclination.

  More specifically, the cam portion 7 is provided with the two convex portions 10, and the cam engaging portion 8 is provided with two concave portions 11 that are engaged with the two convex portions 10. The concave portion 11 is also provided on the opposite surface of the cam portion 7 or the cam engaging portion 8 at an opposite position that is 180 degrees out of phase, and the sliding portion 12 having the downward inclined surface between the two concave portions 11 is provided. The cam engagement portion 8 forming part made of resin is precisely formed so that the shape of the entering and exiting of the facing surface of the cam engagement portion 8 is as shown in FIG.

  Specifically, in this embodiment, the bottom of the concave portion 11 and the top of the climbing inclined portion 13 have a rotation angle of 35 degrees, and when the rotation angle is 0 degrees in the overlapped state, the rotation is 10 degrees from the bottom. It is located in the middle of the moved up-and-inclined slope portion 13, so that the closing bias is automatically generated in the polymerization blockage state. Accordingly, when the convex part 10 is rotated from 0 to 25 degrees, the convex part 10 ascends and ascends the inclined part 13 and escapes from the concave part 11, and the convex part 10 comes into pressure contact with the sliding part 12 formed as a downwardly inclined surface. It is constructed so as to generate a force, and a steeply inclined surface from 25 degrees to 90 degrees is formed, and a gentle inclined surface is provided until just before the maximum opening rotation position where the open state is reached. The rotation bias is set from strong to weak.

  The range from about 90 degrees, which is gentle, to the open state (until just before as will be described later) may be quite gentle or horizontal.

  However, the 170 degree convex part 10 is configured to reach the bottom of the concave part 11 so as to generate a suction force of at least 5 degrees so that it can be clicked and held in the open state, but the stopper is at 165 degrees five degrees before that. Is prevented from over-rotation, so that the convex portion 10 is positioned in the middle of the slanted inclined portion 14 of the concave portion 11 so that it is in an open state. It is configured to do.

  More specifically, in this embodiment, by increasing the climbing slope of the climbing slope 13, the pivot angle at the position where the convex part 10 leaves the concave part 11 is reduced to 25 degrees, which is considerably early. The concave portion 11 is formed so as to cause a rotational bias, and the height of the top portion of the climbing slope portion 13 is lowered to make the climbing slope of the climbing slope portion 13 smaller than the limit slope. The concave portion 11 is formed as described above, and the downward inclined surface of the sliding portion 12 is not an inclined surface having a constant inclination that does not change the inclination, and the convex portion 10 is detached from the concave 11. A position where the downward inclination of the rotational range from the rotational angle to about 90 degrees is larger than the downward inclination just before the maximum opening position in the further rotational range, and the rotational angle is about 90 degrees. It is formed so that the rotational biasing changes between before and after.

  The lower slope of the first half to nearly 90 degrees may be considerably large so as not to cause a large rotational bias, and may be formed so that the slope gradually decreases as it approaches approximately 90 degrees. In any case, the first half is significantly lower than the latter half with the vicinity of 90 degrees as a boundary, and the slope 11 is climbed up, and the top of the sloped portion 13 rises slightly to the required range (first half). Is configured to occur.

  Therefore, in the present embodiment, the rotation resistance is rotated until the weight of the member that rotates upside down (the second member 2 relative to the first member 1) rises, but it is around 90 degrees (85 to 95 degrees), in other words, When the member to be rotated is in a standing state (upright state), almost no self-weight becomes rotation resistance, and if it exceeds this, rotation is promoted conversely. The rotation range until 90 °, that is, the rising state, is steeper than the further rotation range so that a large rotation bias is generated. By effectively increasing and decreasing the height, the height of the top portion of the inclined portion 13 that rises in the concave portion 11 is lowered and the rotational position of the top portion of the upward inclined portion 13 is set to 35 degrees or less (25 degrees). As a configuration that starts to work quickly, The rising slope part 13 does not become steeper than the limit inclination degree, and the necessary large turning bias is generated, so that the turning operation of the second member 2 can be lightened, and an innovative hinge that can realize automatic turning. It becomes a device.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

It is a description perspective view of a present Example. It is a description perspective view of the hinge apparatus of a present Example. It is a description exploded perspective view of the hinge apparatus of a present Example. It is a description perspective view of the cam engaging part of a present Example. It is a description perspective view of the cam part of a present Example. It is operation | movement explanatory sectional drawing at the time of the assembly | attachment of the hinge apparatus of a present Example. It is an operation explanation side view of a present Example. It is explanatory drawing which shows the shape of the recessed part and sliding part of a cam engaging part of a present Example. It is explanatory drawing which shows the shape of the recessed part and sliding part of the cam engaging part of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st member 2 2nd member 3 1st connection part 4 2nd connection part 7 Cam part 8 Cam engaging part 9 Engagement biasing mechanism
10 Convex
11 Recess
12 Sliding part
13 Climbing slope

Claims (4)

  The first member and the second member can be rotated freely so that the first member and the second member are superposed and rotated from the overlapped state where the first member and the second member are overlapped to the first member. A hinge device to be connected, wherein a cam portion provided with a convex portion is provided in a co-rotating state on one of a first connecting portion connected to the first member and a second connecting portion connected to the second member, and the other The cam engaging portion provided with a concave portion that engages with the convex portion of the cam portion by rotating relative to each other is provided in a co-rotating state, and at least one of the cam portion and the cam engaging portion is in the co-rotating state. And an urging mechanism for urging the cam portion or the cam engaging portion in the engaging direction is provided, and the cam engaging portion is provided in the cam engaging portion. Is provided with the concave portion in which the convex portion is depressed and engaged, and the engagement biasing device is rotated by relative rotation. Against which the convex portion is slidably pressed by the engagement bias of the engagement biasing mechanism until the convex portion is removed from the concave portion and the convex portion is engaged with the concave portion again. In this hinge device, the sliding portion is provided on an inclined surface that is inclined downward toward the concave portion with which the convex portion is engaged next, and the rotational biasing force is generated by the engagement biasing mechanism. When the rotation angle in the overlapped state where the first member and the second member are overlapped is 0 degree, the second member is rotated with respect to the first member, and the convex portion is the concave portion. The concave portion is formed so that the rotation angle of the rotation position that has climbed over the inclined portion and escaped from the concave portion is 35 degrees or less, and the inclination of the downward inclined surface of the sliding portion is changed. Do not make the inclined surface with a certain degree of inclination, and the rotation angle is approximately 90 degrees after the convex part is removed from the concave part. The lower inclination of the rotation range is larger than the lower inclination of the further rotation range so that the rotation bias changes before and after the rotation angle is approximately 90 degrees. A hinge device characterized by the above.   The cam portion is provided with the two convex portions, and the concave portions engaging the concave portions with the two convex portions are provided in the cam engaging portion, and both the convex portion and the concave portion are cam portions or cam engaging portions. 2. The hinge device according to claim 1, wherein the sliding device is provided at an opposing position that is an opposing surface of the portion and having a phase difference of 180 degrees, and the sliding portion that is the downward inclined surface is provided between the two concave portions.   When the convex portion provided on the cam portion relatively rotates, it climbs up the rising slope portion of the concave portion where the convex portion is depressed and engages, and climbs over the top portion of the climbing slope portion, The sliding portion is pressed by the engagement urging mechanism by the engagement urging mechanism to generate the rotation urging force, and the sliding portion is further slid into the next recess to be engaged. And forming the recess so that the rotation angle of the position at which the convex portion is removed from the concave portion is 35 degrees or less by increasing the degree of climbing inclination of the climbing inclined portion. The concave portion is formed so that the height of the top portion of the climbing portion is lowered and the climbing slope of the climbing slope portion is smaller than a limit slope that cannot be climbed up. The hinge device according to item.   The main body part provided with the operation part is used as the first member or the second member, and the superposition part provided with the display part superposed on the main part is used as the second member or the first member. An electronic apparatus using a hinge device, wherein the hinge device is pivotally attached to the hinge device according to any one of claims 1 to 3 so as to be turned in an undulating and reversed state from a superposed blockage state. .

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