JP5016395B2 - Hinge device for portable device and portable device - Google Patents

Description

  According to the present invention, the first casing and the second casing constituting the mobile device are relatively opened and closed in the two directions of the vertical direction and the horizontal direction from the closed state in which the first casing and the second casing are overlapped with each other. The present invention relates to a hinge device for a portable device that is suitable for use at the time, and a portable device including the hinge device.

  A mobile phone, which is a type of mobile device, includes a first housing having a keyboard or the like on a top surface and a second housing having a display or the like, and the first housing and the second housing are connected to each other. Folded mobile phones that are pivotally connected by a hinge device are on the market. In this two-fold cellular phone, the second housing is rotatably connected to the rear upper surface of the first housing via a hinge device, and the second housing is superimposed on the upper surface of the first housing. In addition, a closed state in which the upper surface of the first housing is covered with the second housing and an open state in which the upper surface of the first housing is exposed by rotating the second housing with respect to the first housing are created. Is.

In recent years, mobile phones having a variety of functions such as a function using a communication line such as the Internet and a game function in addition to a call function are on the market. Such a cellular phone cannot fully perform its function unless the display unit can only be used in a portrait orientation. That is, the hinge device connects the first housing and the second housing so as to be rotatable in the longitudinal direction with the width direction as an axis, and can be opened and closed in only one direction, and the display unit is vertically long. Could only use it. Therefore, in addition to opening and closing the first housing and the second housing in the longitudinal direction (vertical direction), a hinge device that can be opened and closed in the width direction (left and right direction) and a portable device using the hinge device A telephone has been proposed (for example, see Patent Document 1).
JP 2006-233998 A

  The hinge device described in Patent Document 1 includes a first shaft attached to a first housing, a second shaft attached to a second housing, and a first shaft and a second shaft centered on each axis. When the base portion, the first housing, and the second housing that are rotatably supported can be opened and closed in either one of the two directions when they are closed, the first housing and the second housing And a restricting means for restricting the opening and closing in one of the two directions when the casing is opened and closed in either one of the two directions and in a state other than the closed state. The casing and the second casing can be opened and closed in two directions, and when the closed first casing and the second casing are opened and closed in either direction, the other direction Opening and closing is restricted.

  By the way, in recent years, mobile devices such as mobile phones have been reduced in thickness as well as being multifunctional, and it is desired to reduce the thickness as much as possible. However, the constituent elements of the regulating means are between the first shaft and the second shaft. It is difficult to reduce the thickness because the lock member is provided. That is, the base has a cylindrical first shaft support portion that rotatably supports the first shaft, a cylindrical second shaft support portion that rotatably supports the second shaft, and the first shaft support portion. And a cylindrical connecting portion that connects the second shaft support portion, and a lock member is movably accommodated in the connecting portion, and the closed first housing and second housing are arranged in two directions. When one of the end portions of the lock member is opened and closed in either direction, the opening and closing in the other direction is restricted by engaging either the first shaft support portion or the second shaft support portion. It has become. Thus, a space for providing a lock member is required between the first shaft and the second shaft, and it has been difficult to reduce the thickness and size. Further, if the distance between the first shaft axis and the second shaft axis is wide, it is considered that the backlash increases when the second housing is rotated with respect to the first housing.

  The present invention has been made in order to solve the above-mentioned problems. The object of the present invention is to reduce the distance between the shaft of the first shaft and the shaft of the second shaft to reduce the thickness and size. An object of the present invention is to provide a hinge device for a portable device and a portable device provided with the hinge device that can reduce a backlash when rotating a second housing with respect to one housing.

The hinge device of a portable device according to the present invention for achieving the object, the first housing constituting a portable device and a second housing, from a closed to each other in a mutually superposed state, a vertical left-right direction And a first shaft attached to a corner of one of the first casing and the second casing, and a hinge device that opens and closes selectively in two directions. A second shaft attached to a corner of the other housing of the first housing and the second housing, and the first shaft and the second shaft are supported so as to be rotatable about their respective axes. And when the base and the first casing and the second casing are both closed, they can be opened and closed in either one of the two directions. When any one of the second housings is open, the second housing A regulating means for regulating the opening and closing of the other of the casing and the second casing, and the regulating means is disposed at one end face of the first shaft close to the peripheral surface of the second shaft. A first restriction engagement portion formed by a planar second restriction engagement surface extending in the axial direction on an outer periphery of one end portion of the first shaft and the first restriction engagement portion formed by A third restriction engagement portion formed by a planar third restriction engagement surface extending in the axial direction provided on a peripheral surface of the second shaft close to one end face of the first shaft; And a fourth restriction engagement portion formed by a planar fourth restriction engagement surface extending in the circumferential direction of the second shaft, and the first shaft is rotated with respect to the base portion. When the state other than the closed state is reached, the end surface of the first restriction engagement portion and the third restriction engagement surface are When the rotation of the second shaft is restricted and the second shaft rotates with respect to the base and enters a state other than the closed state, the second restriction engagement surface and the fourth restriction The rotation of the first shaft is restricted by engagement with an engagement surface .

  According to the present invention, a first shaft, a second shaft, a base portion that supports the first shaft and the second shaft so that the first shaft and the second shaft can rotate about their respective axes, and is connected in an orthogonal direction, the first housing, When the second housing is in a closed state, the second housing can be opened and closed in either of two directions, and the first housing and the second housing can be either the first shaft or the second shaft. Since the first shaft includes the restricting means for restricting the first housing and the second housing from rotating about the other of the first shaft and the second shaft when the shaft is in the open state. Compared to the case where a lock member is provided between the first shaft and the second shaft, the distance between the first shaft and the second shaft can be reduced. As a result, the thickness can be reduced, the number of parts can be reduced, and the size and cost can be reduced. Moreover, since the space | interval of the axis | shaft of a 1st shaft and the axis | shaft of a 2nd shaft becomes narrow, the play gap at the time of rotating a 2nd housing | casing with respect to a 1st housing | casing can be made small.

Further, in the hinge device for a portable device according to the present invention, the first shaft is provided with a first through hole penetrating in the axial direction, and the first shaft has one end surface of the second shaft. The second shaft is arranged so as to be close to the surface, and the second shaft is composed of two second shaft support portions cut at a portion facing one end surface of the first shaft. The second through hole penetrating in the axial direction is preferably provided. Moreover, in the hinge device for a portable device according to the present invention, the base portion includes a cylindrical portion provided on the outer periphery of the first shaft so as to be rotatable with respect to the first shaft, and the first portion of the cylindrical portion. It is preferable that a rotation support portion that extends in the axial direction from two opposite side portions of the end portion on the two shaft side and that rotatably supports the second shaft is provided.

In the portable device hinge device according to the present invention, a first cam mechanism for controlling the rotation of the first shaft relative to the base, and a second cam mechanism for controlling the rotation of the second shaft relative to the base. The first cam mechanism is provided on the first shaft, rotates with respect to the base together with the first shaft, and is in surface contact with the first cam A body, A first cam B body which is provided at the base portion so as to be movable in the axial direction of the first shaft and rotates with the base portion with respect to the first shaft, a contact surface of the first cam A body and the first cam A first cam engagement convex portion provided on at least one of the contact surfaces of the B body, and provided on at least the other of the contact surface of the first cam A body and the contact surface of the first cam B body , Engage with the convex part and the front with respect to the first housing A first cam engaging recess for holding the position of the second housing at a predetermined position; and an urging means for urging the first cam B body to come into surface contact with the first cam A body. The second cam mechanism is provided so as to be movable in the axial direction of the first shaft, and is biased toward the second shaft by the biasing means and to the second shaft. It is preferable to have a second cam portion that is provided and engages with the second cam presser to hold the position of the second housing relative to the first housing at a predetermined position. Moreover, in the hinge device for a portable device according to the present invention, the base portion includes a cylindrical portion provided on the outer periphery of the first shaft so as to be rotatable with respect to the first shaft, and the first portion of the cylindrical portion. The first cam A body, the first cam A body, and a rotation support portion that extends in the axial direction from two opposite side portions of the end portion on the two shaft side and rotatably supports the second shaft. It is preferable that one cam B body, the urging means, and the second cam pressing body are provided in the cylindrical portion.

  A portable device according to the present invention includes the portable device hinge device according to the present invention. According to the present invention, as described above, when the first housing and the second housing are opened and closed in one of the two directions and are in a state other than the closed state, the first shaft and the second shaft Are directly engaged to restrict the opening and closing in either one of the two directions, so that the distance between the first shaft axis and the second shaft axis can be narrowed, and the thickness can be reduced. The number of parts can be reduced, the size and cost can be reduced, and the backlash when rotating the second housing relative to the first housing can be reduced.

  As described above, according to the portable device hinge device and the portable device according to the present invention, the first shaft, the second shaft, and the first shaft and the second shaft are rotatably supported around the respective axes. When the base and the first casing and the second casing connected to each other in the orthogonal direction are closed, they can be opened and closed in either one of the two directions. When the body is in an open state with one of the first shaft and the second shaft as an axis, the first housing and the second housing rotate with the other of the first shaft and the second shaft as an axis. And a regulation means for regulating this, it is possible to reduce the distance between the shaft of the first shaft and the shaft of the second shaft, reduce the thickness, reduce the number of parts, and reduce the size and cost. To the first housing It is possible to reduce the backlash deviation when rotating the second housing.

  Hereinafter, a hinge device for a portable device and a portable device according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram showing an example of a portable device provided with a hinge device for a portable device according to the present invention. 2-7 is a figure which shows an example of the hinge apparatus of a portable apparatus in this invention. As shown in FIGS. 1 to 7, the hinge device for a portable device according to the present invention is arranged in a vertical state from a closed state in which a first housing 11 and a second housing 12 constituting the portable device 10 are overlapped with each other. It opens and closes relatively in two directions, one direction and one left-right direction.

  The mobile device 10 is not particularly limited, and examples thereof include a mobile phone, a PDA, a notebook personal computer, a mobile terminal such as Zaurus (trademark), a calculator, a pocket computer, a portable game machine, and the like. Preferably there is. In the present invention, the portable device includes an ashtray, a case lid, and the like. That is, there is no particular limitation as long as the two casings are slid with respect to each other. In the present embodiment, the portable device will be described without any particular limitation.

  The first housing 11 has, for example, a keyboard (not shown) on the upper surface. The second housing 12 has, for example, a display 12a such as an LCD on the lower surface. The 1st housing | casing 11 and the 2nd housing | casing 12 are each formed in the substantially same substantially rectangular shape. From the closed state in which the first casing 11 and the second casing 12 are overlapped with each other, the second casing 12 is referred to as a longitudinal direction (one direction in the vertical direction) with respect to the first casing 11, for example. And the first housing 11 and the second housing 12 are connected via the hinge device 1 so as to be relatively openable and closable in two directions of the width direction (sometimes referred to as one of the left and right directions). The mobile device 10 is configured. In other words, the portable device 10 has the lower surface of the second housing 12 overlapped with the upper surface of the first housing 11 to close the upper surface of the first housing 11, and the second from the upper surface of the first housing 11. The lower surface of the housing 12 is separated and the upper surface of the first housing 11 can be exposed.

  The hinge device 1 of the portable device according to the present invention includes a first shaft 2 attached to one of the first housing 11 and the second housing 12, for example, the first housing 11, and the first housing. The other shaft of the body 11 and the second housing 12, for example, the second shaft 3 attached to the second housing 12, and the first shaft 2 and the second shaft 3 are rotated about the respective axes. When the base 4 that is supported and coupled in the orthogonal direction, and the first housing 11 and the second housing 12 are in a closed state, they can be opened and closed in either one of the two directions. When the housing 11 and the second housing 12 are in an open state with one of the first shaft 2 and the second shaft 3 as an axis, the first housing 11 and the second housing 12 are in the first shaft 2. And a rule for restricting rotation around the other shaft of the second shaft 3 Is characterized in that a means 5.

  The base portion 4 includes a first shaft support portion 41 that is a cylindrical portion that rotatably supports the first shaft 2, and a second shaft support portion that is a rotation support portion that rotatably supports the second shaft 3. 42. The first shaft support portion 41 supports the first shaft 2 so as to be rotatable, and the first housing 11 and the second housing 12 rotate vertically with respect to the first shaft 2. Supported as possible. The first shaft support portion 41 is formed in, for example, a substantially oval cylindrical shape in which two circular opposing portions, for example, upper and lower portions are cut out in parallel with each other. A flange having a second shaft support portion 42 provided at one end of the first shaft support portion 41 and a circular insertion hole 43a coaxially provided at the opening of the other end portion. A portion 43 is provided.

  For example, the lower portion of the second shaft support portion 42 is positioned on the bottom portion of the first shaft support portion 41, both side portions are positioned on the peripheral surface of the first shaft support portion 41, and the upper portion is the first shaft. A flat plate portion 42a formed in the shape of a rectangular flat plate positioned above the upper portion of the support portion 41, and rotation supports that extend from both sides of the flat plate portion 42a in the axial direction of the first shaft support portion 41 and face each other. It consists of parts 42b and 42c. The rotation support portions 42b and 42c above the axis of the first shaft support portion 41 are provided with circular rotation support holes 42d and 42e on the same axis. These rotation support holes 42d and 42e may have the same size. For example, as shown in the drawing, one rotation support portion (also referred to as a first rotation support portion 42b) may have a rotation support hole ( The first rotation support hole 42d) is the rotation support hole (referred to as the second rotation support hole 42e) of the other rotation support portion (also referred to as the second rotation support portion 42c). It may be formed with a larger diameter.

  The 1st shaft 2 is supported so that rotation to the 1st shaft support part 41 is possible, for example. The first shaft 2 is formed in a substantially oval bar shape in which two opposing circular portions having a diameter that can be inserted into the insertion hole 43a of the first shaft support portion 41 are cut out in parallel with each other. A first through hole 25 through which an electric wire or the like for electrically connecting the first housing 11 and the second housing 12 is inserted is provided on the same axis of the first shaft 2. A circular flange portion 21 is provided on the outer periphery on the one end side of the center portion of the first shaft 2. The flange portion 21 has a diameter larger than that of the insertion hole 43 a of the first shaft support portion 41, and a diameter that can rotate within the first shaft support portion 41. One end portion side of the flange portion 21 of the first shaft 2 may be referred to as a first A shaft 22, and the other end portion side of the flange portion 21 of the first shaft 2 may be referred to as a first B shaft 23. The length of the first B shaft 23 (the length in the axial direction) is such that the flange 21 of the first shaft 2 is in contact with the flange 43 of the first shaft support 41 and the tip is supported by the second shaft. It is formed in a dimension that projects within the portion 42 so as to engage with the second shaft 3.

  In the first shaft 2, the first A shaft 22 is inserted into the first shaft support portion 41 from the second shaft support portion 42 side of the first shaft support portion 41 so that the first A shaft 22 protrudes from the insertion hole 43 a. Provided. The flange portion 21 side of the first A shaft 22 is formed as a circular circular portion 22a. On the outer periphery of the first A shaft 22 protruding from the insertion hole 43a of the first shaft support portion 41, a cylindrical mounting member 15 and a washer 16 that are fitted to the outer periphery of the first A shaft 22 are provided. The front end portion of the 1A shaft 22 is crimped and the attachment member 15 and the washer 16 are attached to the first A shaft 22 so that the first shaft 2 does not come out of the first shaft support portion 41 (base portion 4).

  The outer peripheries of the attachment member 15 and the washer 16 are formed in substantially the same oval shape as the outer periphery of the first shaft support portion 41. The inner shape of the mounting member 15 is a circle having a diameter that is slightly larger than the circular portion where the circular portion 22a of the first A shaft 22 is positioned so as to be fitted and positioned on the first A shaft 22. It is formed as a circular portion 15 a having a shape, and is formed in a substantially oval shape so that the portion other than the circular portion 15 a can be fitted to the outer periphery of the first A shaft 22. A circular projecting portion 15b having a diameter shorter than the interval between the two parallel portions of the mounting member 15 is provided on the end surface of the mounting member 15 on the washer 16 side, and this projecting portion 15b contacts the washer 16. By being in contact with each other, the outer protrusions 15b of the mounting member 15 and the washer 16 are formed as mounting grooves 15c. The attachment member 15 and the washer 16 are attached to, for example, an attachment hole (not shown) of the first housing 11, and at this time, an attachment member 15 is attached by attaching an E-ring (not shown) to the attachment groove 15c. And the washer 16 is attached to the first housing 11 without being detached.

  For example, the second shaft 3 is rotatably supported with respect to the second shaft support portion 42. The second shaft 3 is rotatably supported in the rotation support holes 42d and 42e of the second shaft support portion 42. The second shaft 3 may be formed of a single member, but the second A shaft 31 and the second B are supported individually and rotatably in the first rotation support hole 42d and the second rotation support hole 42e, respectively. It is preferably formed from two members with the shaft 32.

  The second A shaft 31 is provided integrally with a substantially disc-shaped second AA shaft 33 having a diameter larger than that of the first rotation support hole 42d and one end face of the second AA shaft 33 coaxially. And the second AB shaft 34 inserted into the first rotation support hole 42d. The second AB shaft 34 is a circle having a diameter slightly smaller than the diameter of the first rotation support hole 42d at a position positioned in the first rotation support hole 42d when inserted into the first rotation support hole 42d. It is formed as a circular portion 34a having a shape, and other than the circular portion 34a is formed as a substantially oval mounting portion 34b. A second through hole 35 through which an electric wire or the like is inserted is provided on the same axis as the second A shaft 31, and the first casing 11 is provided in the second through hole 35 and the first through hole 25 of the first shaft 2. An electric wire or the like that electrically connects the second housing 12 is inserted.

  The second B shaft 32 is basically substantially the same as the second A shaft 31 and formed in a facing shape. For example, the second B shaft 32 has a substantially disk-like second BA shaft 36 having the same diameter as the second AA shaft 33, and The second BA shaft 36 includes a second BB shaft 37 that is integrally provided coaxially with one end face of the second BA shaft 36 and inserted into the second rotation support hole 42e. The second BB shaft 37 is a circle having a diameter slightly smaller than the diameter of the second rotation support hole 42e at a position positioned in the second rotation support hole 42e when inserted into the second rotation support hole 42e. A circular portion 37a having a shape is formed, and a portion other than the circular portion 37a is formed as a substantially oval mounting portion 37b.

  The second AB shaft 34 of the second A shaft 31 is inserted into the first rotation support hole 42 d of the second shaft support portion 42, and the second BB shaft 37 of the second B shaft 32 is the second time of the second shaft support portion 42. The second A shaft 31 and the second B shaft 32 (second shaft 3) are rotatably supported by the second shaft support portion 42 by being inserted into the dynamic support hole 42e. A mounting bracket 17 is attached to the second A shaft 31 and the second B shaft 32.

  The attachment bracket 17 is attached to the second housing 12 with, for example, a screw. The mounting bracket 17 is opposed to each other by being bent in a direction substantially perpendicular to the flat plate portion 17a at both end portions on one end side of the flat plate portion 17a and a substantially elongated flat plate portion 17a having a mounting hole 17b. It consists of two attachment pieces 17c and 17d. The interval between the mounting pieces 17c and 17d is formed to be slightly larger than the interval between the outer surfaces of the first rotation support portion 42b and the second rotation support portion 42c of the second shaft support portion 42, for example. The attachment piece 17c on the second A shaft 31 side is provided with a substantially oval insertion hole 17e so that the attachment portion 34b of the second A shaft 31 can be fitted. The attachment piece 17d on the second B shaft 32 side is provided with a substantially oval insertion hole 17f so that the attachment portion 37b of the second B shaft 32 can be fitted. The second A shaft 31 through the first rotation support hole 42d and the second B shaft 32 through the second rotation support hole 42e are inserted and fitted into the insertion holes 17e and 17f of the mounting pieces 17c and 17d, respectively. By doing so, the second shaft 3 and the mounting bracket 17 are rotatably supported with respect to the base portion 4.

  The mounting bracket 17 is attached, for example, below the lower surface of the second housing 12 and in the vicinity of one side end, so that the axis of the first shaft 2 is in the width direction (left-right direction) of the first housing 11. The second shaft 3 is positioned such that the first shaft 2 extends in the longitudinal direction of the second housing 12 and the axis of the second shaft 3 extends in the longitudinal direction (vertical direction). Yes. As a result, the second housing 12 can be rotated in the vertical direction about the first shaft 2 relative to the first housing 11 and can be rotated in the left-right direction about the second shaft 3. Has been.

  When the first casing 11 and the second casing 12 are in the closed state, the regulating means 5 can be opened and closed in either one of the two directions, and the first casing 11 and the second casing 12 can be opened and closed. Is in the open state with one of the first shaft 2 and the second shaft 3 as an axis, the first housing 11 and the second housing 12 are either the first shaft 2 or the second shaft 3. Rotation around the axis is restricted. For example, the restriction means 5 includes a first restriction engagement portion 51 and a second restriction engagement portion 52 provided on the first shaft 2, and a third restriction engagement portion 53 and a fourth restriction provided on the second shaft 3. When the first shaft 2 rotates with respect to the base 4 and enters a state other than the closed state, the first restriction engagement portion 51 and the third restriction engagement portion 53 are engaged. Then, when the rotation of the second shaft 3 is restricted and the second shaft 3 is rotated with respect to the base portion 4 and enters a state other than the closed state, the second restriction engagement portion 52 and the fourth restriction engagement portion 54 is preferably engaged to restrict the rotation of the first shaft 2.

  The first restriction engaging portion 51 is, for example, the end surface of the first B shaft 23 (the end surface of the first shaft 2 that is close to the peripheral surface of the second shaft 3). The second restricting / engaging portion 52 is formed, for example, by forming the end face sides of two parallel portions facing each other on the peripheral surface of the first B shaft 23 as the second restricting / engaging surface. For example, the second restriction engagement portions 52 are provided on the first B shaft 23 so as to be substantially parallel to a surface substantially orthogonal to the axis of the second shaft 3 in the closed state.

  The third restriction engagement portion 53 is, for example, a planar third restriction engagement surface that extends in the axial direction on the peripheral surface of the second shaft 3. The third restriction engaging portions 53 are provided on the second AA shaft 33 of the second A shaft 31 and the second BA shaft 36 of the second B shaft 32 so as to face the end surface of the first B shaft 23, respectively. For example, when the second AA shaft 33 and the second BA shaft 36 are formed in a circular shape in the closed state, these third restriction engaging portions 53 are portions where the front end portion of the first B shaft 23 can come into contact. It is formed so as to be cut out so as to be substantially parallel to the end surface of the first B shaft 23. That is, in the closed state, the first restriction engagement portion 51 (the end surface of the first B shaft 23) and the third restriction engagement portion 53 are positioned substantially parallel but not engaged, and the base portion 4, when the first shaft 2 (the first shaft 2 with respect to the second shaft 3) rotates from the closed state to a state other than the closed state, the first restriction engaging portion 51 and the third restriction member Part of the joint portion 53 is engaged with each other so that the second shaft 3 cannot rotate with respect to the base portion 4.

  The fourth restriction engagement portion 54 is, for example, a flat fourth restriction engagement surface extending in the circumferential direction on the end surfaces of the second AA shaft 33 and the second BA shaft 36 of the second shaft 3. For example, when the second restriction engagement portion 54 rotates the second shaft 3 with respect to the base portion 4 with the second shaft 3 as an axis from the closed state, the fourth restriction engagement portion 54 has a position where the end surface of the first B shaft 23 can contact. It is formed so as to be cut out along the circumferential direction of the 2AA shaft 33 and the second BA shaft 36. That is, in the closed state, the second restriction engagement portion 52 and the fourth restriction engagement portion 54 are positioned substantially parallel but not engaged, and the second shaft 3 is not engaged with the base portion 4. Is rotated from the closed state to a state other than the closed state, a part of the second restriction engagement portion 52 and the fourth restriction engagement portion 54 are engaged with each other, and The first shaft 2 is configured not to rotate.

  Moreover, you may make it provide the 2nd shaft rotation control means which controls rotation of the 2nd shaft 3 (attachment bracket 17) with respect to the base 4 in the hinge apparatus 1 which concerns on this invention. The second shaft rotation restricting means is not particularly limited, and for example, the second shaft rotation restricting means can rotate within an angle range of 0 ° to 140 ° (sometimes referred to as a second rotation angle) with the second shaft 3 as an axis. In addition, when the second rotation angle is 0 °, the first contact portion 57 that the mounting bracket 17 contacts and prevents the second shaft 3 and the mounting bracket 17 from rotating in the minus direction from 0 °, Provided on the tip surfaces of the 2AA shaft 33 and the second BA shaft 36, when the second rotation angle is 140 °, the end surface of the first B shaft 23 comes into contact with the second shaft 3 and the mounting bracket 17 more than 140 °. You may comprise with the 2nd contact part 58 which prevents the rotation to a direction. The second rotation angle is an angle between a straight line extending in the width direction of the first housing 11 and a straight line extending in the width direction of the second housing 12. Moreover, the rotation range in the 2nd rotation angle of the 2nd shaft 3 (attachment bracket 17) with respect to the base 4 is not limited to 0 degrees-140 degrees, but is decided arbitrarily. Further, the second shaft rotation restricting means is provided in the hinge device 1 according to the present invention. However, the present invention is not limited to this, and the second shaft rotation restricting means is provided in the first casing 11 and the second casing 12. Also good. In addition, in the present invention, 0 ° includes around 0 °, and 140 ° includes around 140 °.

  Further, the first shaft rotation restricting means for restricting the rotation of the first shaft 2 with respect to the base 4 may be provided in the hinge device 1 according to the present invention, or provided in the first housing 11 and the second housing 12. You may do it. Moreover, the rotation range in the 1st rotation angle of a 1st shaft rotation control means can be set arbitrarily, for example, may be 0 degree-160 degrees. The first rotation angle is an angle between a straight line extending in the longitudinal direction of the first housing 11 and a straight line extending in the longitudinal direction of the second housing 12. When the first rotation angle and the second rotation angle are 0 °, the first casing 11 and the second casing 12 are in a closed state where they overlap each other. In the present invention, the term “160 °” includes around 160 °.

  The hinge device 1 according to the present invention includes a first cam mechanism 6 that controls the rotation of the first shaft 2 with respect to the base 4 and a second cam mechanism 7 that controls the rotation of the second shaft 3 with respect to the base. It is preferable to provide.

  The first cam mechanism 6 is, for example, for holding the first shaft 2 in a predetermined position with respect to the base 4 and, for example, with respect to the base 4 at two first rotation angles of 0 ° and 160 °. It is preferable that the first shaft 2 is configured to be held in a locked state. The first cam mechanism 6 is not particularly limited, but may be provided in the first shaft support portion 41 of the first shaft 2. The first cam mechanism 6 is provided on the first shaft 2, for example, and is in surface contact with the first cam A body 61 that rotates with the first shaft 2 relative to the base portion 4, and the first cam A body 61. The first cam B body 62 that is provided on the base 4 so as to be movable in the axial direction of the first shaft 2 and rotates with respect to the first shaft 2 together with the base 4, the contact surface of the first cam A body 61 and the first cam A body 61. At least one of the contact surfaces of the 1 cam B body 62, for example, the first cam engagement convex portion 63 provided on the contact surface of the first cam A body 61, the contact surface of the first cam A body 61, and the first cam B The position of the second housing 12 with respect to the first housing 11 is provided on at least the other contact surface of the body 62, for example, on the contact surface of the first cam B body 62 and engages with the first cam engagement convex portion 63. The first cam engaging recess 64 that holds the first cam B body 62 and the first cam A body 61. It is preferable that the have a biasing means 65 which biases the contact.

  The first cam A body 61 is positioned in the first shaft support portion 41 and is formed, for example, in a substantially ring shape. The first cam A body 61 is formed with an outer shape having a diameter narrower than the interval between the parallel portions of the first shaft support portion 41. The inside of the first cam A body 61 (sometimes referred to as an inner hole) is formed in a substantially oval shape that can be inserted and fitted into the outer periphery of the first B shaft 23 of the first shaft 2. That is, the first cam A body 61 rotates together with the first shaft 2 without rotating around the axis of the first B shaft 23 and is movable in the axial direction of the first B shaft 23. It is provided on the outer periphery. One end surface of the first cam A body 61 is a surface that contacts the flange portion 21 of the first shaft 2. The other end surface of the first cam A body 61 is a surface that contacts the first cam B body 62 (sometimes referred to as a first contact surface). Although the first cam A body 61 is formed as a separate member from the first shaft 2, the first cam A body may be formed integrally with the first shaft.

  Although the 1st cam engagement convex part 63 may be provided in the 1st cam B body 62, in an example, it is provided in the 1st contact surface. Two first cam engagement protrusions 63 are provided on the first contact surface in the circumferential direction at intervals of 180 °. These two first cam engagement convex portions 63 are each formed to protrude from the first contact surface in a trapezoidal shape, for example. The front end surface of the first cam engagement convex portion 63 is formed in a flat shape.

  The first cam B body 62 is in contact with the first cam A body 61 and positioned in the first shaft support portion 41, and is formed in a substantially ring shape. For example, the outer shape of the first cam B body 62 is formed in a substantially oval shape slightly smaller than the inner shape of the first shaft support portion 41 so as to be fitted into the first shaft support portion 41. The inner shape (sometimes referred to as an inner hole) of the first cam B body 62 is formed in a circular shape having a diameter slightly larger than the outer diameter of the first B shaft 23. That is, the first cam B body 62 rotates around the axis of the first B shaft 23 but is fitted to the first shaft support portion 41 and rotates together with the first shaft support portion 41, and the first B shaft 23. It is provided on the outer periphery of the first B shaft 23 so as to be movable in the axial direction.

  The first cam engagement concave portion 64 is engaged with the first cam engagement convex portion 63, and is, for example, an end surface (referred to as a second contact surface) of the first cam B body 62 that contacts the first cam A body 61. Is provided). Two first cam engagement recesses 64 are provided on the second contact surface at intervals of 180 ° in the circumferential direction. These first cam engagement concave portions 64 are formed in a concave shape so as to be able to engage with the first cam engagement convex portion 63. For example, the two first cam engagement recesses 64 can be completely (including substantially completely) the two first cam engagement projections 63 when the first rotation angles are −10 ° and 170 °. It is preferable that they are arranged as described above. In addition, the two first cam engagement recesses 64 are, for example, a first rotation angle of −10 ° and 170 °, respectively, 20 ° front and back, and the first cam engagement protrusions 63 are the first cam engagement recesses 64. It is preferable that it is formed so that it may begin to engage with. That is, for example, it is preferable that a part of the first cam engagement convex portion 63 is formed so as to enter the first cam engagement concave portion 64 when the first rotation angle is 20 ° or 150 °. The first cam engagement convex portion 63 and the first cam engagement concave portion 64 can be completely engaged (including substantially complete) at −10 ° and 170 °, but are not limited thereto. However, the first cam engagement convex portion 63 and the first cam engagement concave portion 64 are completely (including substantially complete) when the first rotation angle is a negative angle from 0 °. It is preferable to be able to engage.

  The 2nd contact surface of the 1st cam B body 62 other than the 1st cam engagement recessed part 64 is formed in planar shape. A biasing means 65 is provided on an end surface (also referred to as a biasing surface) of the first cam B body 62 opposite to the second contact surface.

  The biasing means 65 is, for example, a compression spring 65a. For example, the compression spring 65 a is fitted on the outer periphery of the first B shaft 23, one end is in contact with the urging surface of the first cam B body 62, and the other end is on the outer periphery of the first B shaft 23. It is in contact with the second cam presser 71 provided. The urging force of the compression spring 65 a urges the first cam B body 62 to be pressed toward the first cam A body 61, and between the first cam A body 61 and the first cam B body 62. The acting frictional force is increased so that the first shaft 2 can be held at a predetermined position with respect to the base portion 4.

  For example, the second cam mechanism 7 holds the second shaft 3 in a predetermined position with respect to the base 4. For example, the second cam mechanism 7 holds the second shaft 3 with respect to the base 4 at a second rotation angle of 0 °. It is preferably configured to be held in a locked state. The second cam mechanism 7 is not particularly limited. For example, the second cam pressing body 71 provided on the second shaft 3 so as to be movable in the axial direction of the first shaft 2 and the second cam pressing body 71 are provided. One of the second cam portion 72 that engages and holds the position of the second housing 12 with respect to the first housing 11 in a predetermined position, and the second cam presser 71 and the second cam portion 72, for example, It is preferable to include second cam biasing means for biasing the second cam pressing body 71 so as to contact the second cam portion 72.

  For example, the second cam presser 71 is mounted on the outer periphery of the first B shaft 23 so as to be in contact with the other end of the compression spring 65a, and is formed in a substantially ring shape. For example, the outer shape of the second cam presser 71 is formed in a substantially oval shape slightly smaller than the inner shape of the first shaft support portion 41 so as to be fitted into the first shaft support portion 41. The inner hole of the second cam presser 71 is formed in a circular shape having a diameter slightly larger than the outer diameter of the first B shaft 23. That is, the second cam retainer 71 rotates around the axis of the first B shaft 23 but is fitted to the first shaft support 41 and rotates together with the first shaft support 41, and the first B shaft 23. It is provided on the outer periphery of the first B shaft 23 so as to be movable in the axial direction.

  The second cam portion 72 is provided on the second shaft 3 and engages with the second cam presser 71 to hold the position of the second housing 12 with respect to the first housing 11 at a predetermined position. Although it does not specifically limit as the 2nd cam part 72, For example, among 2nd AA shaft 33 of the 2nd A shaft 31, and the 3rd control engagement part 53 of the 2nd BA shaft 36 of the 2nd B shaft 32, it is the 2nd cam presser. 71 (which may be referred to as a second cam A portion 73) and a peripheral surface of the second AA shaft 33 and the second BA shaft 36 (also referred to as a second cam B portion 74).

  The second cam urging means is not particularly limited, but it is preferable to also use a compression spring 65a that is the urging means 65 of the first cam mechanism 6. Of course, an urging means other than the compression spring 65a may be provided. The other end of the compression spring 65a is brought into contact with the second cam presser 71, and the second cam presser 71 is pressed against the second cam A portion 73 or the second cam B 74 by the urging force of the compression spring 65a. As a result, the frictional force acting between the second cam presser 71 and the second cam A portion 73 or the second cam B portion 74 (second shaft 3) increases, and the second shaft acts on the base portion 4. 3 can be held at a predetermined position.

  At this time, when the rotation range of the second shaft 3 with respect to the base portion 4 is 0 ° to 140 ° when the second rotation angle is 0 °, the second cam presser is rotated. Since the end surface of the body 71 and the second cam A portion 73 are in surface contact, the second shaft 3 is held in a locked state with respect to the base portion 4 and, for example, the second rotation angle is around 10 °. The second cam presser 71 starts to engage with the second cam A portion 73 so that the second shaft 3 is urged to rotate relative to the base 4 so that the second rotation angle is automatically 0 °. It is configured.

  Next, the operation of the portable device hinge device 1 and the portable device 10 according to the present invention will be described.

  In the closed state in which the mobile device 10 is not used, the first housing 11 and the second housing 12 are usually folded in two so as to overlap each other (see FIGS. 1A and 1B). . At this time, the first rotation angle is 0 °, and the first cam engagement convex portion 63 and the first cam engagement concave portion 64 are engaged. For example, the first shaft 2 is locked with respect to the base portion 4. Held in a state. In this way, the first cam engaging convex portion 63 and the first cam engaging concave portion 64 are engaged, and the first casing 11 and the second casing 12 are held in a double-folded closed state where they overlap each other. However, the first cam engaging convex portion 63 and the first cam engaging concave portion 64 are not completely fitted (including substantially complete), so that the first cam engaging convex portion 63 is engaged. Since a part is in the first cam engagement recess 64, the first housing 11 and the second housing 12 are held in a closed state without rattling.

  That is, since the first cam engagement recess 64 is arranged to engage with the first cam engagement projection 63 when the first rotation angle is −10 ° instead of 0 °, The tip of the cam engaging convex portion 63 is in contact with a part of the first cam engaging concave portion 64 (inclined portion) and incompletely enters the first cam engaging concave portion 64 to be completely (including substantially complete). .) Is engaged in a state where it is not fitted. That is, the first cam engaging convex portion 63 is closed in a folded manner in which the first housing 11 and the second housing 12 overlap each other in a state of moving toward the bottom of the first cam engaging concave portion 64. It is in a state. As a result, when the first rotation angle is 0 °, the second housing 12 is in close contact with the first housing 11 so as to be fully fitted (including substantially complete). Therefore, the first housing 11 and the second housing 12 are held in a closed state without rattling.

  In the closed state, the second rotation angle is 0 °, and the second cam presser body 71 and the second cam presser body 71 are in contact with the end face of the second cam presser body 71 and the second cam A portion 73. Since the cam portion 72 is engaged, for example, the first shaft 2 is held in a locked state with respect to the base portion 4. That is, the second cam presser 71 and the second cam portion 72 are engaged, and the first casing 11 and the second casing 12 are held in a double-folded closed state where they overlap each other. Since the end face of the second cam presser 71 and the second cam A portion 73 are engaged with each other in surface contact with each other, the first housing 11 and the second housing 12 are brought into a closed state without rattling. Is retained.

  In the closed state, the first restricting / engaging portion 51 (the end surface of the first B shaft 23) and the third restricting / engaging portion 53 are positioned substantially in parallel but are not engaged (opposed). Therefore, the first housing 11 and the second housing 12 can be opened and closed by rotating the first shaft 2 as an axis. Further, since the second restriction engagement portion 52 and the fourth restriction engagement portion 54 are positioned substantially in parallel but are not engaged (not opposed), the second shaft 3 is used as the first shaft. The housing 11 and the second housing 12 can be rotated to open and close. Therefore, in the closed state, the first housing 11 and the second housing 12 can be opened and closed by rotating in either one of the two directions.

  In order to use the portable device 10 by opening it in the longitudinal direction, for example, the second housing 12 is moved around the first shaft 2 with the first housing 11 fixed (with the first shaft 2 as an axis). The lower part of the second housing 12 is rotated in a direction away from the first housing 11. As a result, when the first cam engagement convex portion 63 is disengaged from the first cam engagement concave portion 64 (disengaged) and the first rotation angle exceeds 150 °, the first cam engagement convex portion 63 is released. The mating projection 63 starts to engage with the first cam engagement recess 64, and the second housing 12 can automatically rotate with respect to the first housing 11. When the first rotation angle reaches 160 °, the first housing 11 and the second housing 12 are in the first open state opened in the longitudinal direction (see FIG. 1C). Thereby, the portable apparatus 10 can be used in the state opened in the longitudinal direction. Further, the engagement between the first cam engagement convex portion 63 and the first cam engagement concave portion 64 is completely the same as in the closed state. Since the first cam engagement convex portion 63 is not fitted into the first cam engagement concave portion 64 (not including substantially perfect), the first casing 11 and the second casing The body 12 is held in the first open state without rattling.

  Further, for example, when the second housing 12 is rotated with respect to the first housing 11 about the first shaft 2, the first cam engagement when the first rotation angle is 10 ° to 150 °. The projection 63 is detached from the first cam engagement recess 64, and the planar tip surface of the first cam engagement projection 63 is in surface contact with the planar second contact surface of the first cam B body 62. Slide on the surface. As a result, a friction torque is generated between the first housing 11 and the second housing 12, so when the rotation of the second housing 12 is stopped, the second housing 12 stops at that position by the friction torque. To do. Therefore, the second housing 12 can be stopped at a desired angle in the first rotation angle range of 10 ° to 150 ° with respect to the first housing 11.

  Further, when the second housing 12 is rotated relative to the first housing 11 around the first shaft 2 from the closed state (see FIG. 5), the first shaft 2 is rotated with respect to the base portion 4, There is a place where the first restriction engagement portion 51 (the end surface of the first B shaft) and the third restriction engagement portion 53 face each other, that is, the first restriction engagement portion 51 and the third restriction engagement portion 53 Therefore, the first housing 11 and the second housing 12 do not rotate around the second shaft 3. As described above, since the first casing 11 and the second casing 12 do not rotate and open in the other direction (width direction), the first casing 11 and the second casing 12 can be opened and closed smoothly. .

  In order to return the second housing 12 to the original position after using the mobile device 10 in the longitudinal direction, for example, the direction in which the second housing 12 is opened with the first housing 11 fixed. Rotate in the opposite direction. As a result, the engagement between the first cam engagement convex portion 63 and the first cam engagement concave portion 64 is released, and the first cam engagement convex portion 63 is in the first cam engagement when the first shaft 2 is 0 °. The first housing 11 and the second housing 12 are closed and returned to the original state by entering and engaging with the recess 64 and being held in a locked state.

  In order to use the portable device 10 by opening it in the width direction, for example, with the first housing 11 fixed, the second housing 12 is moved around the axis of the second shaft 3 (with the second shaft 3 as an axis). ) Rotate so that the upper surface of the first housing 11 is exposed. As a result, when the first rotation angle reaches 140 °, the end surface of the first B shaft 23 comes into contact with the second contact portion 58 of the second shaft 3, and the rotation of the second housing 12 stops and the second opening is performed. It will be in a state (refer FIG.1 (d)). Thereby, the portable apparatus 10 can be used in the state opened in the width direction. At this time, the second cam presser 71 is pressed against the second cam B part 74 by the urging force of the compression spring 65a, and the second cam presser 71 and the second cam B part 74 (second shaft 3) are brought into contact with each other. The first casing 11 and the second casing 12 are held in the second open state by the frictional force acting therebetween.

  Further, for example, when the second housing 12 is rotated with respect to the first housing 11 about the second shaft 3, the second cam presser body has a second rotation angle of 10 ° to 140 °. 71 slides on the circumferential surface while contacting the second cam B portion 74 (second shaft 3). As a result, a friction torque is generated between the first housing 11 and the second housing 12, so when the rotation of the second housing 12 is stopped, the second housing 12 stops at that position by the friction torque. To do. Therefore, the second housing 12 can be stopped at a desired angle in the second rotation angle range of 10 ° to 140 ° with respect to the first housing 11.

  Further, when the second housing 12 is rotated with respect to the first housing 11 around the second shaft 3 from the closed state (see FIG. 6), the second shaft 3 is rotated with respect to the base 4. Since the second restriction engagement portion 52 and the fourth restriction engagement portion 54 face each other, that is, the second restriction engagement portion 52 and the fourth restriction engagement portion 54 engage with each other. The first housing 11 and the second housing 12 do not rotate around the 1 shaft 2. As described above, since the first casing 11 and the second casing 12 do not rotate and open / close in the other direction (longitudinal direction), the first casing 11 and the second casing 12 can be opened and closed smoothly. .

  In order to return the second housing 12 to the original position after using the portable device 10 in the width direction, for example, the direction in which the second housing 12 is opened with the first housing 11 fixed. Rotate in the opposite direction. As a result, when the second casing 12 rotates while the end surface of the second cam presser 71 is in sliding contact with the second cam B portion 74 (while being engaged), the second rotation angle becomes 10 °. The end surface of the cam presser 71 moves from the second cam B portion 74 to the second cam A portion 73 so that the second housing 12 can automatically rotate in the closing direction with respect to the first housing 11. Become. When the second rotation angle becomes 0 °, the end surface of the second cam presser 71 comes into surface contact with the second cam A portion 73, and the mounting bracket 17 comes into contact with the first contact portion 57. The first casing 11 and the second casing 12 are closed and return to the original state.

  Therefore, in the portable device hinge device 1 and the portable device 10 according to the present invention, the distance between the axis of the first shaft 2 and the axis of the second shaft 3 is narrow, so that the thickness can be reduced and the number of parts can be reduced. , Miniaturization and cost reduction. Further, since the distance between the axis of the first shaft 2 and the axis of the second shaft 3 is narrowed, the backlash when the second casing 12 is rotated with respect to the first casing 11 can be reduced. .

  The second shaft 3 is divided into two, one shaft, for example, the second A shaft 31 is provided with a second through hole 35, and the second through hole 35 and the first through hole 25 of the first shaft 2 are provided with a first housing. By inserting an electric wire or the like that electrically connects the body 11 and the second housing 12, it is not necessary to provide a protective member or the like that protects the electric wire or the like, and the appearance is good and further miniaturization can be achieved. Further, since the attachment member 15 attached to the first housing 11 is formed in a cylindrical shape, a bracket for attachment to the first housing 11 can be eliminated, and the cost can be reduced. Moreover, since it is the structure which inserts and assembles the 1st shaft 2 to the 1st housing | casing 11, size reduction can be achieved. In addition, since the biasing means of the first cam mechanism 6 and the second cam mechanism 7, for example, the compression spring 65a is used together, the number of parts can be reduced and the cost can be reduced. Further, by using the compression spring 65a also, the overall length can be shortened and the size can be reduced. Further, since the restricting means 5 and the second cam mechanism 7 are partially used, the size can be reduced.

  As described above, the hinge device for a portable device according to the present invention supports the first shaft, the second shaft, the first shaft and the second shaft so as to be rotatable about the respective axes, and in the orthogonal direction. When the base to be connected, the first housing, and the second housing are in a closed state, they can be opened and closed in either one of two directions, and the first housing and the second housing are the first. Regulation that restricts rotation of the first housing and the second housing about the other of the first shaft and the second shaft as an axis when the shaft is in the open state with the shaft or the second shaft as an axis The distance between the shaft of the first shaft and the shaft of the second shaft can be reduced, the thickness can be reduced, the number of parts can be reduced, the size and cost can be reduced, and the first Rotate the second housing relative to one housing It is possible to reduce the backlash shift when, is suitably used as a mobile phone of the hinge device, especially among portable devices.

It is a figure which shows an example of the portable apparatus provided with the hinge apparatus of the portable apparatus which concerns on this invention, (a) And (b) is a perspective view which shows a closed state, (c) is a perspective view which shows a 1st open state, (D) is a perspective view which shows a 2nd opening state. It is a figure which shows an example of the hinge apparatus of the portable device which concerns on this invention, (a) And (b) is a perspective view, (c) is a front view, (d) is an AA arrow directional cross section in (c). FIG. It is a disassembled perspective view which shows an example of the hinge apparatus of the portable device which concerns on this invention. It is a disassembled perspective view which shows an example of the hinge apparatus of the portable device which concerns on this invention. It is an example of the hinge apparatus of the portable apparatus which concerns on this invention, and is a perspective view which shows the state which rotated the 1st shaft with respect to the base. It is an example of the hinge apparatus of the portable apparatus which concerns on this invention, and is a perspective view which shows the state which rotated the 2nd shaft with respect to the base. It is a figure which shows an example of the 2nd open state in the hinge apparatus of the portable apparatus which concerns on this invention, (a) is a side view, (b) is a BB arrow sectional drawing in (a), (c) is A rear view, (d) is a cross-sectional view taken along line CC in (c), and (e) is a cross-sectional view taken along line DD in (c).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hinge apparatus 2 1st shaft 3 2nd shaft 4 Base 5 Control means 6 1st cam mechanism 7 2nd cam mechanism 10 Portable apparatus 11 1st housing | casing 12 2nd housing | casing 25 1st through-hole 35 2nd through-hole 41 1st shaft support part (tubular part)
42 Second shaft support (rotation support)
51 1st restriction engagement part 52 2nd restriction engagement part 53 3rd restriction engagement part 54 4th restriction engagement part 61 1st cam A body 62 1st cam B body 63 1st cam engagement convex part 64 1st 1 cam engaging recess 65 urging means 71 second cam presser 72 second cam portion

Claims (6)

A hinge device that opens and closes a first housing and a second housing constituting a mobile device alternately and in two directions, a vertical direction and a left-right direction, from a closed state in which they are overlapped with each other. ,
A first shaft attached to a corner of one of the first housing and the second housing;
A second shaft attached to a corner of the other casing of the first casing and the second casing;
A base portion that supports the first shaft and the second shaft so as to be rotatable about respective axes and is connected in an orthogonal direction;
When both the first casing and the second casing are in a closed state , the first casing and the second casing can be opened and closed in either one of the two directions, and either the first casing or the second casing A regulating means for regulating the opening / closing of the other of the first casing and the second casing when
The restricting means is disposed on the outer periphery of the first restricting engagement portion formed on one end surface of the first shaft close to the peripheral surface of the second shaft and the one end portion of the first shaft. A second restriction engagement portion formed by a planar second restriction engagement surface extending in the axial direction, and provided on a peripheral surface of the second shaft close to one end face of the first shaft; A third restriction engagement portion formed by a planar third restriction engagement surface extending in the axial direction and the second restriction engagement surface formed by a planar fourth restriction engagement surface extending in the circumferential direction on the second shaft. 4 restriction engagement parts,
When the first shaft rotates with respect to the base and enters a state other than the closed state, the end surface of the first restriction engagement portion and the third restriction engagement surface engage with each other, and the second shaft. And the second restriction engagement surface engages with the fourth restriction engagement surface when the second shaft rotates relative to the base and enters a state other than the closed state. Then , the hinge device of the portable device is characterized in that the rotation of the first shaft is restricted . The first shaft is provided with a first through-hole penetrating in the axial direction, and the first shaft is disposed such that one end surface thereof is close to the peripheral surface of the second shaft, and the second shaft Consists of two second shaft support portions cut at locations facing one end surface of the first shaft, and a second through hole penetrating in the axial direction is provided in one of the second shaft support portions. The hinge device for a portable device according to claim 1 , wherein the hinge device is provided. The base portion includes a cylindrical portion provided on the outer periphery of the first shaft so as to be rotatable with respect to the first shaft, and two opposite sides of the end portion of the cylindrical portion on the second shaft side. The mobile device hinge device according to claim 1 , further comprising: a rotation support portion that extends in a direction of the axis from the portion and rotatably supports the second shaft. A first cam mechanism that controls the rotation of the first shaft relative to the base, and a second cam mechanism that controls the rotation of the second shaft relative to the base;
The first cam mechanism is provided on the first shaft, rotates together with the first shaft with respect to the base, and is in surface contact with the first cam A body. Of the first cam B body which is provided in the base portion so as to be movable in the axial direction of the first cam B body and rotates with the base portion with respect to the first shaft, the contact surface of the first cam A body and the first cam B body A first cam engagement convex portion provided on at least one of the contact surfaces ; a first cam convex portion provided on at least the other of the contact surface of the first cam A body and the contact surface of the first cam B body; A first cam engagement recess that engages and holds the position of the second housing relative to the first housing at a predetermined position, and the first cam B body is in surface contact with the first cam A body. Biasing means for biasing to
The second cam mechanism is provided so as to be movable in the axial direction of the first shaft, and is provided on the second shaft and a second cam pressing body that is biased toward the second shaft by the biasing means. is characterized by having a second cam portion for holding a position of the second housing relative to the second cam pressing member engaged with the first housing in a predetermined position, in claim 1 The hinge apparatus of the portable apparatus as described. The base portion includes a cylindrical portion provided on the outer periphery of the first shaft so as to be rotatable with respect to the first shaft, and two opposite sides of the end portion of the cylindrical portion on the second shaft side. A rotation support portion that extends in the axial direction from the portion and rotatably supports the second shaft,
5. The portable device according to claim 4 , wherein the first cam A body, the first cam B body, the urging means, and the second cam pressing body are provided in the cylindrical portion. Hinge device. A portable device comprising the portable device hinge device according to any one of claims 1 to 5 .

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