JP2011220397A - Portable apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable apparatus for following the same midway form, even in any case of forward transfer and inverse transfer, in the portable apparatus of connecting two casings via a biaxial hinge device.SOLUTION: The portable apparatus includes a first casing 2, a second casing 3 and connecting members 6a and 6b. The first casing 2 is rotatably connected to the connecting members 6a and 6b via first hinges 5a and 5b, and the second casing is rotatably connected to the connecting members 6a and 6b via second hinges 7a and 7b. Starting end side rotation checking torque of the first hinges 5a and 5b is set smaller than starting end side rotation checking torque of the second hinges 7a and 7b, and tail end side rotation checking torque of the first hinges 5a and 5b is set larger than tail end side rotation checking torque of the second hinges 7a and 7b.

Description

  The present invention relates to a portable device in which two casings are connected via a biaxial hinge device.

  There are known portable devices in which a first housing and a second housing are rotatably connected to each other via a hinge device, for example, so-called notebook personal computers, cellular phones, and other portable information devices. Since the first housing and the second housing are connected via the hinge device, the hinge device is opened during use to expand the first housing and the second housing, and are not used (portable) ) Sometimes the hinge device can be closed and folded so that the first housing and the second housing overlap vertically.

  In addition, portable devices in which a first housing and a second housing are connected via a so-called biaxial hinge device are also known (for example, Patent Documents 1 to 3).

  The biaxial hinge device includes a connecting member, a first hinge shaft provided at one end of the connecting member, and a second hinge shaft provided at the other end of the connecting member. The shaft and the second hinge shaft are arranged parallel to each other. The first housing of the mobile device is connected to the biaxial hinge device via the first hinge shaft, and the second housing is connected to the biaxial hinge device via the second hinge shaft. It rotates relative to the shaft hinge device.

  When such a biaxial hinge device is used, the rotation angle of the housing can be expanded. For example, if the surface of the first and second housings is called the abdominal surface and the surface on the back side of the abdominal surface is called the back surface, the first and second housings are in contact with each other from the form The form of the portable device can be freely changed to the form in which the back surfaces of the first and second cases are brought into contact with each other via the form in which the first and second cases are deployed to each other (patent) Document 1 (FIGS. 9 and 10), Patent Document 2 (FIGS. 1, 4, and 5)).

JP 2002-118633 A JP 2002-171324 A Japanese Utility Model Publication No. 02-134316

  In the portable device in which the first housing and the second housing are connected via such a biaxial hinge device, there is a problem that the rotation order of the first and second hinge shafts is not fixed. . For example, the first housing is lifted from the form in which the first housing is folded on the second housing (FIG. 1 of Patent Document 1), and the first housing is moved to the second housing. When the first casing is rotated relative to the second casing, it is not determined whether the first casing rotates relative to the connecting member or the connecting member rotates relative to the second casing. For this reason, every time the first casing is opened / closed and rotated, the rotation order of the connecting member and the first casing is changed, and there is a problem that the user feels uncomfortable.

  However, the second hinge shaft is provided with a resistance applying mechanism as disclosed in Patent Document 3, and the rotational resistance torque of the second hinge shaft is larger than the rotational resistance torque of the first hinge shaft. If comprised in this way, a rotation order can be defined so that a 1st hinge axis may rotate first, and a 2nd hinge axis may rotate after that. For example, as shown in FIG. 8A, when the mobile phone terminal 81 is in a form in which the first casing 2 is folded on the second casing 3 (hereinafter referred to as “original form”), When a force is applied to the first casing 2 so that the first casing 2 rotates clockwise about the two-axis hinge device 4, the first hinge shaft 5 having a small rotation resistance torque is first moved. To turn. Therefore, as shown in FIG. 8B, the first housing 2 rotates clockwise with respect to the connecting member 6 of the biaxial hinge device 4. The first housing 2 reaches the end of the rotation range of the first hinge shaft 5 (here, 180 ° from the position shown in FIG. 8A) and stops rotating with respect to the connecting member 6. (FIG. 8 (c)). Since the first hinge shaft 5 does not rotate any more, if the force is further applied to the first housing 2, the second hinge shaft 7 having a large rotation resistance torque rotates. Therefore, the connecting member 6 rotates clockwise with respect to the second housing 3. Therefore, the mobile phone terminal 81 goes through the form shown in FIGS. 8D and 8E, and finally moves to the form shown in FIG. 8F. That is, the first housing 2 is shifted to a form folded below the second housing 3 (hereinafter referred to as “inverted form”).

  When the cellular phone terminal 81 is returned from the inverted configuration (FIG. 8F) to the original configuration (FIG. 8A), the first housing 2 rotates counterclockwise around the biaxial hinge device 4. A force is applied to the first housing 2 so as to move. Also in this case, since the rotational resistance torque of the first hinge shaft 5 is smaller than the rotational resistance torque of the second hinge shaft 7, the first hinge shaft 5 rotates first. Therefore, as shown in FIGS. 8G and 8H, the first housing 2 rotates counterclockwise with respect to the connecting member 6. During this time, the connecting member 6 does not rotate with respect to the second housing 3. When the first casing 2 reaches the end of the rotation range of the first hinge shaft 5 and stops rotating with respect to the connecting member 6 (FIG. 8 (i)), the second hinge shaft 7 rotates. Then, the connecting member 6 rotates counterclockwise with respect to the second housing 3 (FIG. 8 (j)) and returns to the original form (FIG. 9 (a)).

  FIGS. 8B to 8E show forms in the middle of shifting the mobile phone terminal 81 from the original form (FIG. 8A) to the inverted form (FIG. 8F). 8 (g) to 8 (j) show a form in the middle of returning from the inverted form (FIG. 8 (f)) to the original form (FIG. 8 (a)) (hereinafter referred to as “reverse transition”). ing. Here, as can be seen by comparing FIGS. 8B and 8J, FIG. 8C and FIG. 8I, FIG. 8D and FIG. 8H, and FIG. 8E and FIG. Are different from each other in the forward and reverse transitions.

  Such a difference in the intermediate form between the forward transition and the reverse transition is undesirable because it makes the user feel uncomfortable.

  The present invention has been made in view of such circumstances, and is a portable device in which two casings are connected via a biaxial hinge device, and is the same in both cases of forward transition and reverse transition. An object of the present invention is to provide a portable device that follows the form of the device.

  In order to solve the above-described problem, a mobile device according to a first aspect of the present invention includes a first housing, a second housing, and a connecting member, and the first housing is interposed via a first hinge. The second housing is rotatably connected to the connection member via a second hinge, and the rotation shafts of the first hinge and the second hinge are connected to the connection member. In the portable device configured to be arranged in parallel, the first hinge rotates between a first start end and a first end, and at the first start end, the first hinge rotates a predetermined amount. A first start-end-side rotation preventing means for applying a blocking torque to block the rotation from the first start end toward the first end; and a predetermined rotation-preventing torque applied to the first hinge at the first end To prevent rotation from the first end toward the first start First end side rotation preventing means, and the second hinge rotates between the second start end and the second end, and at the second start end, the second hinge A second start-end-side rotation-preventing means for applying a rotation-preventing torque to prevent the rotation from the second start end toward the second end, and a predetermined rotation-prevention at the second hinge at the second end A second terminal-side rotation preventing unit that applies torque to prevent rotation from the second terminal to the second starting end, and the rotation-preventing torque of the first start-side rotation preventing unit is the first torque 2 is set smaller than the rotation prevention torque of the start end side rotation prevention means, and the rotation prevention torque of the first end side rotation prevention means is set larger than the rotation prevention torque of the second end side rotation prevention means. It is characterized by being.

  A portable device according to a second aspect of the present invention includes a first housing, a second housing, and a connecting member, and the first housing is rotatable with respect to the connecting member via a first hinge. The second casing is rotatably connected to the connecting member via a second hinge, and the first hinge and the second hinge are arranged in parallel with each other. In the portable device, the first hinge rotates between a first start end to a first end, and a predetermined rotation prevention torque is applied to the first hinge at the first start end to apply the first rotation. First start-end-side rotation blocking means for blocking rotation from the first end toward the first end, and applying a predetermined rotation-blocking torque to the first hinge at the first end 1st termination side rotation prevention which prevents rotation toward the 1st start end from the termination The second hinge rotates between a second start end and a second end, and applies a predetermined anti-rotation torque to the second hinge at the second start end. A second start-end-side rotation preventing means for preventing rotation from the start end of the second end toward the second end, and applying a predetermined rotation-preventing torque to the second hinge at the second end, A second end-side rotation preventing means for preventing rotation from the end to the second start end, and the rotation preventing torque of the first start-end side rotation preventing means is equal to that of the second start-end side rotation preventing means. The rotation prevention torque is set larger than the rotation prevention torque, and the rotation prevention torque of the first terminal side rotation prevention means is set smaller than the rotation prevention torque of the second terminal side rotation prevention means.

  When the first casing rotates from the first terminal end toward the first start end and reaches the first start end, the first casing comes into contact with the connecting member, and The second casing is configured to restrict the subsequent rotation of the first hinge, and the second hinge rotates from the second start end to the second end. Then, when the second end is reached, the second member may be configured to abut against the connecting member and restrict subsequent rotation of the second hinge.

  A first rotation restricting means for restricting a rotation range of the first hinge from the first start end to the first end; and a rotation range of the second hinge from the second start end to the first end. You may make it provide the 2nd rotation control means controlled between 2 terminal.

  According to the portable device of the present invention, it is a portable device in which two casings are connected via a two-axis hinge device, and the same intermediate form can be followed in both cases of forward transition and reverse transition. .

BRIEF DESCRIPTION OF THE DRAWINGS It is an external view of the mobile telephone terminal which shows an example of embodiment of this invention, (a) is a perspective view, (b) is the elevation seen from the A direction of (a). It is sectional drawing of a hinge axis | shaft. It is a top view of a case side disk. It is a top view of a connection member body side disk. It is a notional sectional view of the first spherical groove. It is explanatory drawing which shows the effect | action of a connection member body side disk. It is explanatory drawing which shows the effect | action of a mobile telephone terminal. It is explanatory drawing which shows the example of a prior art.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

  A cellular phone terminal 1 shown in FIG. 1 is an example of a portable device according to the present invention, and connects a first casing 2 and a second casing 3 via two-axis hinge devices 4a and 4b. The first casing 2 and the second casing 3 are configured to freely rotate with respect to the biaxial hinge devices 4a and 4b (see FIG. 1A).

  As shown in FIG. 1B, the biaxial hinge device 4a includes a first hinge shaft 5a, a connecting member 6a, and a second hinge shaft 7a, and the biaxial hinge device 4b includes a first hinge shaft. 5b, the connecting member 6b, and the second hinge shaft 7b. The first hinge shafts 5a and 5b are disposed at one end of the connecting members 6a and 6b, and rotatably connect the first housing 2 to the connecting members 6a and 6b. The second hinge shafts 7a and 7b are disposed at the other ends of the connecting members 6a and 6b, and rotatably connect the second housing 3 to the connecting members 6a and 6b. Further, the first hinge shaft 5a and the first hinge shaft 5b, the second hinge shaft 7a and the second hinge shaft 7b are arranged coaxially with each other, and the first hinge shafts 5a and 5b are connected to the second hinge shaft 5b. The hinge shafts 7a and 7b are arranged in parallel to each other.

  Further, as is clear from FIG. 1B, the biaxial hinge devices 4a and 4b are arranged symmetrically at the left and right ends of the mobile phone terminal 1. The shapes and structures of the first hinge shafts 5a and 5b, the connecting members 6a and 6b, and the second hinge shafts 7a and 7b constituting the biaxial hinge devices 4a and 4b are also bilaterally symmetric. That is, the shapes and structures of the first hinge shaft 5b, the connecting member 6b, and the second hinge shaft 7b are the same as those in the center plane of the mobile phone terminal 1 (the plane indicated by AA ′ in FIG. 1B). The shape and structure of the hinge shaft 5a, the connecting member 6a, and the second hinge shaft 7a are mirror images of each other. Therefore, hereinafter, the shapes and structures of the biaxial hinge device 4a, that is, the first hinge shaft 5a, the connecting member 6a, and the second hinge shaft 7a will be described.

  FIG. 2 is a cross-sectional view showing the configuration of the first hinge shaft 5a (FIG. 2 (a)) and the second hinge shaft 7a (FIG. 2 (b)) of the biaxial hinge device 4a. As is apparent from FIG. 2, the first hinge shaft 5a and the second hinge shaft 7a basically have the same configuration. Therefore, in the following, the components of the first hinge shaft 5a are denoted by reference numerals in the 50s, the components of the second hinge shaft 7a are denoted by symbols in the 70s, and the common components are denoted by reference numerals. The same number is attached to one digit. That is, the constituent elements labeled “5X” and “7Y” have the same configuration and function, “5X” is a constituent element of the first hinge shaft 5a, and “7X” is the second hinge shaft. It shows that it is a component of 7a.

  The first hinge shaft 5a and the second hinge shaft 7a include housing side shaft tubes 51 and 71 and connecting member body side shaft tubes 52 and 72, respectively. The casing side shaft cylinder 51 is fixed to the first casing 2, and the casing side axis cylinder 71 is fixed to the second casing 3. Further, both the connecting member body side shaft cylinders 52 and 72 are fixed to the connecting member 6a.

  Housing-side discs 53 and 73 are fitted inside the housing-side shaft cylinders 51 and 71. Grooves 53a and 73a are formed on the end faces of the case side disks 53 and 73, and are engaged with the ribs 51a and 71a formed at the bottom of the rib case side shaft cylinders 51 and 71, respectively. Therefore, the rotation of the housing side disks 53 and 73 with respect to the housing side cylinders 51 and 71 is restricted.

  The connecting member body side discs 54 and 74 are fitted in the connecting member body side shaft cylinders 52 and 72, respectively. Guide grooves 54 a and 74 a are formed on the outer edges of the connecting member body side disks 54 and 74, and engage with guide ribs 52 a and 72 a formed on the inner surfaces of the connecting member body shaft cylinders 52 and 72. Therefore, the connecting member body side discs 53 and 73 freely advance and retract in the length direction of the connecting member body side shaft cylinders 52 and 72, but the rotation with respect to the connecting member body side shaft cylinders 52 and 72 is restricted.

  Springs 55 and 75 are provided on the back side of the connecting member body side disks 54 and 74. In addition, rods 56 and 76 are located behind the springs 55 and 75, and flanges 56 a and 76 a at the rear ends of the rods 56 and 76 support the springs 55 and 75. 75, the connecting member body side disks 54 and 74, and the housing side disks 53 and 73, and are screwed and fixed to the housing side cylinders 51 and 71. Since it is configured in this manner, the connecting member body side disks 54 and 74 are pressed by the springs 55 and 75 and are urged in a direction toward the housing side disks 53 and 73.

  The first spheres 57a and 77a and the second spheres 57b and 77b are sandwiched between the housing side disks 53 and 73 and the connecting member body side disks 54 and 74. The first spheres 57a and 77a are formed in first sphere grooves 53b and 73b formed in the housing side disks 53 and 73 and first sphere grooves 54b and 74b formed in the connecting member body side disks 54 and 74, respectively. Guided and rolled. Similarly, the second spheres 57b and 77b are formed in the second sphere grooves 53c and 73c formed in the housing side disks 53 and 73 and the second sphere grooves 54c and 74c formed in the connecting member body side disks 54 and 74, respectively. Rolled by being guided by.

  Here, comparing FIG. 2 (a) and FIG. 2 (b), the distance between the first sphere 57a and the second sphere 57b and the distance between the first sphere 77a and the second sphere 77b are different. Please be careful. The distance between the first spheres 57a and 77a and the second spheres 57b and 77b changes according to the mechanism shown in the following paragraphs when the first hinge shaft 5a or the second hinge shaft 7a is rotated.

  FIG. 3 is a plan view of the housing side disk 53 as viewed from the connecting member body side shaft cylinder 52. As apparent from FIG. 3, the first and second spherical grooves 53 b and 53 c of the housing side disk 53 extend linearly in the radial direction of the housing side disk 53. Accordingly, the first and second spheres 57 a and 57 b are guided by the first and second sphere grooves 53 b and 53 c and roll in the radial direction of the housing-side disk 53. The planar shape of the housing side disk 73 viewed from the connecting member body side shaft cylinder 72 is the same as this. Therefore, the first and second spheres 77 a and 77 b are guided by the first and second sphere grooves 73 b and 73 c and roll in the radial direction of the housing-side disk 73.

  FIG. 4 is a plan view of the connecting member body side disk 54 as seen from the housing side shaft cylinder 51. As is clear from FIG. 4, the first and second spherical grooves 54 b and 54 c of the connecting member body side disk 54 draw a semicircular arc. Further, the first and second spherical grooves 54b and 54c have the arcs in opposite directions. Further, the first and second spherical grooves 54b and 54c are displaced from each other in the radial direction. That is, the first and second spherical grooves 54b and 54c draw a bowl-shaped pattern. In addition, recesses 54d to 54g are formed at both ends of the first and spherical grooves 54b and 54c.

  Therefore, when the housing side disk 53 is rotated with respect to the connecting member body side disk 54, the first sphere 57a is guided between the recess 54d and the recess 54e by the first sphere groove 54b, thereby forming an arc shape. Roll to draw the trajectory of. The second sphere 57b is guided between the recess 54f and the recess 54g by the second sphere groove 54c and rolls in an arcuate locus.

  The planar shape of the connecting member body side disc 74 viewed from the housing side shaft cylinder 71 is the same as that of the connecting member body side disc 54. Therefore, when the housing side disk 73 is rotated with respect to the connecting member body side disk 74, the first sphere 77a is guided by the first sphere groove 74b and rolls in an arcuate path. In addition, the second sphere 77b is guided by the second sphere groove 74c and rolls along an arcuate locus.

  FIG. 5 is a conceptual cross-sectional view showing a path from the recess 54d of the connecting member body side disk 54 to the recess 54d through the first spherical groove 54b. FIG. 5 (b) is an enlarged view of the recess 54d. As is apparent from FIG. 5, the recess 54d and the recess 54d are recessed with respect to the bottom surface of the first spherical groove 54b. Therefore, when the first sphere 57a is moved from the recess 54d to the recess 54e, the first sphere 57a is lifted from the recess 54d (escaped from the recess 54d) and placed on the first sphere groove 54b. Operation is required.

  At this time, that is, when the first sphere 57a gets over the edge of the boundary between the recess 54d and the first sphere groove 54b, the horizontal component Rh of the reaction force R received by the first sphere 57a from the edge (FIG. 5). (See (b)) acts as a force for preventing the first sphere 57a from escaping from the recess 54d (hereinafter referred to as “escape prevention force F”). Further, the escape prevention force F is determined by the shapes and dimensions of the first sphere 57a and the recess 54d, and does not change depending on the position of the recess 54d with respect to the connecting member body side disk 54.

  Now, as shown in FIG. 6 (a), when the first sphere 57a is in the recess 54d and the second sphere 57b is in the recess 54g, the housing side axial disc 53 is rotated counterclockwise. Sometimes, the escape prevention force F acts on the first and second spheres 57a and 57b in opposite directions. The moment Mccw that acts on the housing-side shaft-side disc 53 by this pair of escape prevention forces F is expressed by equation (1).

    Mccw = F * Dccw (1)

  Here, Dccw is the distance between the action lines of the pair of escape prevention forces F, that is, the distance between the recess 54d and the recess 54g.

  Similarly, as shown in FIG. 6 (b), when the first sphere 57a is in the recess 54e and the second sphere 57b is in the recess 54f, the housing side axial disk 53 is rotated clockwise. Sometimes, the escape prevention force F acts on the first and second spheres 57a and 57b in opposite directions. A moment Mcw that acts on the housing-side shaft-side disc 53 by this pair of escape prevention forces F is expressed by Expression (2).

    Mcw = F * Dcw (2)

  Here, Dcw is the distance between the action lines of the pair of escape prevention forces F, that is, the distance between the recesses 54e and 54f.

  As is clear from FIG. 6, since Dccw <Dcw, Expression (3) is derived from Expression (1) and Expression (2).

    Mccw <Mcw (3)

  The moment Mcw acts as a rotation-preventing torque that prevents the rotation of the casing-side shaft cylinder 51 at one end of the rotation range of the first hinge shaft 5a when the case-side shaft cylinder 51 is rotated toward the other end. To do. Further, the moment Mccw is a rotation prevention torque that prevents the rotation when the casing side shaft cylinder 51 is rotated toward the one end at the other end of the rotation range of the first hinge shaft 5a. Acts as

  That is, Expression (3) indicates the magnitude of the rotation prevention torque at both ends of the rotation range of the first hinge shaft 5a. In other words, the rotation prevention torque of the first hinge shaft 5a is different depending on the rotation direction, and is different depending on the forward rotation, reverse rotation, clockwise rotation, and counterclockwise rotation.

  Similarly, the rotation prevention torque of the second hinge shaft 7a also varies depending on the rotation direction. Depends on forward rotation, reverse rotation, clockwise rotation or counterclockwise rotation. The same applies to the first hinge shaft 5b and the second hinge shaft 7b.

  Finally, the operation of the mobile phone terminal 1 will be described. As shown in FIG. 7 (a), when the mobile phone terminal 1 is in the original form, that is, when the first casing 2 is folded on the second casing 3, In the connecting member body side disk 54 of the hinge shaft 5a, the first sphere 57a is fitted in the recess 54d, and the second sphere 57b is fitted in the recess 54g. In the connecting member body side disk 74 of the second hinge shaft 7a, the first sphere 77a is fitted in the recess 74e, and the second sphere 77b is fitted in the recess 74f. 7 shows the connecting member body side disks 54 and 74 viewed from the side opposite to that in FIG. 6, that is, the connecting member 6a side, the shapes of the first and second spherical grooves 54b, 54c, 74b, and 74c are as follows. The left and right are drawn in reverse. In the following description, “clockwise” and “counterclockwise” are used with reference to the viewpoint of FIG.

  Now, in the original configuration, the first hinge shaft 5a and the second first hinge shaft 7a are in the state as described above, and therefore the rotation prevention torque of the first hinge shaft 5a is the second hinge shaft. It is larger than the rotation prevention torque of 7a. Therefore, when the first housing 2 is lifted from the second housing 3, the first housing 2 rotates clockwise around the first hinge shaft 5 a as shown in FIG. 7B. I take the. That is, the first sphere 57a is pulled up from the recess 54d and rolls on the first sphere groove 54b. The second sphere 57b is pulled up from the recess 54g and rolls on the second sphere groove 54c. At this time, since the second hinge shaft 7a does not move, the first and second spheres 77a and 77b of the second hinge shaft 7a remain fitted in the recesses 74e and 74f.

  When the first casing 2 is further rotated clockwise around the first hinge shaft 5a, it reaches the end of the rotation range of the first hinge shaft 5a. That is, as shown in FIG. 7C, the first housing 2 is rotated from the original form by 180 ° around the first hinge shaft 5a, and the first and second spheres of the first hinge shaft 5a are rotated. 57a and 57b are fitted in the recesses 54f and 54e. At this time, the first casing 2 stops rotating by contacting and interfering with the connecting member 6a.

  After the rotation of the first casing 2 around the first hinge shaft 5a is stopped, the first casing 2 is further rotated clockwise around the two-axis hinge device 4a. Starts rotating around the second hinge shaft 7a. That is, as shown in FIG. 7 (d), the first and second spheres 77a and 77b of the second hinge shaft 7a are lifted from the recesses 74e and 74f, and the first and second sphere grooves 74b and 74c. Roll over.

  When the first casing 2 is further rolled clockwise around the second hinge shaft 7a, the first casing 2 overlaps the second casing. That is, the mobile phone terminal 1 takes the reverse form. At this time, as shown in FIG. 7E, the first and second spheres 77a and 77b of the second hinge shaft 7a are fitted in the recesses 74d and 74g. At this time, the connecting member 6a comes into contact with and interferes with the second housing 3 and stops rotating.

  Now, when the mobile phone terminal 1 is returned from the inverted form to the original form, the forms shown in FIGS. 7A to 7E are followed in reverse order. That is, in the reverse form, contrary to the original form, since the rotation prevention torque of the second hinge shaft 7a is larger than the rotation prevention torque of the first hinge shaft 75a, the reverse form (FIG. 7 (e)). When the first housing 2 is pulled down, the first housing 2 rotates counterclockwise around the second hinge shaft 7a, and passes through the form shown in FIG. Transition to the form shown in FIG. Thereafter, the first housing 2 rotates counterclockwise around the first hinge shaft 5a, and returns to the original form (FIG. 7A) through the form shown in FIG. 7B.

  As described above, the mobile phone terminal 1 follows the same intermediate form in both the transition from the original form to the reverse form (forward transition) and the transition from the reverse form to the original form (reverse transition). No discomfort to the person.

  That is, in the original configuration, the rotation prevention torque of the first hinges 5a and 5b is set to be smaller than the rotation prevention torque of the second hinges 7a and 7b. When the first hinges 5a and 5b reach the end of the rotation, the second hinges 7a and 7b rotate. Further, in the reverse form, the rotation prevention torque of the first hinges 5a and 5b is set larger than the rotation prevention torque of the second hinges 7a and 7b, so that the second hinges 7a and 7b are preceded. After that, the first hinges 5a and 5b are rotated.

  Further, the rotation ranges of the first hinges 5a and 5b and the second hinges 7a and 7b are restricted by the first spherical grooves 54b and 74b and the second spherical grooves 54c and 74c, respectively. The form can be changed within the range.

  When the first hinge 5a, 5b or the second hinge 7a, 7b reaches the end of rotation, the first casing 2 or the second casing 3 comes into contact with and interferes with the connecting member 6a. Stop. Therefore, since excessive stress is not applied to the first hinges 5a and 5b and the second hinges 7a and 7b, durability is improved.

  The above description of the embodiment is an exemplification of the embodiment of the present invention, and the technical scope of the present invention is not limited by the above description. The present invention can be implemented by application, modification or improvement within the scope of the technical idea described in the claims.

  For example, in the above description, an example in which two sets of biaxial hinge devices 4a and 4b are provided and both the first and second casings 2 and 3 are supported is shown, but the biaxial hinge device is one set. There may be three or more sets.

  Moreover, you may reverse the structure or function of the housing | casing side axial cylinder 51 and the connection member body side axial cylinder 52. FIG. That is, the connecting member body side disk 54, the spring 55, the rod 56, or an element having the same function may be attached to the housing side.

  In the above description, the casing-side shaft cylinder 51 and the casing-side disk 53 are separate parts, but they may be integrally formed.

  In the above description, the planar shapes of the first and second spherical grooves 54b, 54c, 74b, and 74c are arcs. However, the planar shapes of the first and second spherical grooves 54b, 54c, 74b, and 74c are arcs. It is not limited to. Various curves can be selected.

  In the above description, the recesses 54d and 54e provided at both ends of the first spherical groove 54b have the same shape and the same escape prevention force F, but the shapes of the recesses 54d and 54e are changed. Thus, the escape prevention force F of the end portion (recess 54e) for which the rotation prevention torque is to be increased may be larger than the other (recess 54d).

  In the original configuration, the rotation prevention torque of the second hinges 7a and 7b is configured to be smaller than the rotation prevention torque of the first hinges 5a and 5b. In the inverted configuration, the first hinge You may comprise so that the rotation prevention torque of 5a, 5b may become smaller than the rotation prevention torque of 2nd hinge 7a, 7b. In this case, in the case of forward transition, the second hinges 7a and 7b are rotated in advance, and in the case of reverse transition, the first hinges 5a and 5b are rotated in advance. In both the forward transition and the reverse transition, the same intermediate form is followed, so that the user does not feel uncomfortable.

  In the above embodiment, the mobile device according to the present invention has been described by taking the mobile phone terminal as an example. However, the present invention is not limited to the mobile phone terminal, and a plurality of casings are rotated with each other via the hinge device. As long as it has a structure that is movably connected, it can be applied to so-called notebook personal computers, PDAs (Personal Data Assistances), electronic books, and any other portable devices.

  It is also possible to connect three or more housings using two or more hinge devices.

  DESCRIPTION OF SYMBOLS 1 ... Mobile phone terminal, 2 ... 1st housing | casing, 3 ... 2nd housing | casing, 4, 4a, 4b ... 2-axis hinge apparatus, 5, 5a, 5b ... 1st hinge shaft, 6, 6a, 6b ... connecting member, 7, 7a, 7b ... second hinge shaft, 51, 71 ... housing side shaft tube, 52, 72 ... connecting member body side shaft tube, 53, 73 ... housing side disk, 53b, 73b ... first Sphere for groove, 53c, 73c ... Second sphere groove, 54, 74 ... Connection member body side disk, 54b, 74b ... First sphere groove, 54c, 74c ... Second sphere groove, 54d, 54e, 54f, 54g ... recess, 74d, 74e, 74f, 74g ... recess, 54c, 74c ... second sphere groove, 55, 75 ... spring, 56, 76 ... rod, 57a, 77a ... first sphere, 57b, 77b ... Second sphere, 81 ... mobile phone terminal

Claims (4)

A first housing, a second housing, and a connecting member;
The first housing is rotatably connected to the connecting member via a first hinge,
The second casing is rotatably connected to the connecting member via a second hinge,
In a portable device configured by arranging rotation axes of the first hinge and the second hinge in parallel,
The first hinge rotates between a first start end and a first end, and at the first start end, a predetermined rotation prevention torque is applied to the first hinge so that the first start end extends from the first start end. A first start-end-side rotation blocking means for blocking rotation toward the first end, and a predetermined rotation-blocking torque applied to the first hinge at the first end to start the first end from the first end First end side rotation preventing means for preventing rotation toward the starting end of
The second hinge rotates between a second start end and a second end, and at the second start end, a predetermined rotation prevention torque is applied to the second hinge to start the second start end from the second start end. Second start-end-side rotation blocking means for blocking rotation toward the second end, and applying a predetermined rotation-blocking torque to the second hinge at the second end to start the second end from the second end Second end side rotation preventing means for preventing rotation toward the starting end of
The rotation prevention torque of the first start end side rotation prevention means is set smaller than the rotation prevention torque of the second start end side rotation prevention means,
The portable device characterized in that the rotation prevention torque of the first terminal side rotation prevention means is set larger than the rotation prevention torque of the second terminal side rotation prevention means. A first housing, a second housing, and a connecting member;
The first housing is rotatably connected to the connecting member via a first hinge,
The second casing is rotatably connected to the connecting member via a second hinge,
In a portable device configured by arranging rotation axes of the first hinge and the second hinge in parallel,
The first hinge rotates between a first start end and a first end, and at the first start end, a predetermined rotation prevention torque is applied to the first hinge so that the first start end extends from the first start end. A first start-end-side rotation blocking means for blocking rotation toward the first end, and a predetermined rotation-blocking torque applied to the first hinge at the first end to start the first end from the first end First end side rotation preventing means for preventing rotation toward the starting end of
The second hinge rotates between a second start end and a second end, and at the second start end, a predetermined rotation prevention torque is applied to the second hinge to start the second start end from the second start end. Second start-end-side rotation blocking means for blocking rotation toward the second end, and applying a predetermined rotation-blocking torque to the second hinge at the second end to start the second end from the second end Second end side rotation preventing means for preventing rotation toward the starting end of
The rotation prevention torque of the first start end side rotation prevention means is set larger than the rotation prevention torque of the second start end side rotation prevention means,
The portable device, wherein the rotation prevention torque of the first terminal side rotation prevention means is set smaller than the rotation prevention torque of the second terminal side rotation prevention means. When the first casing rotates from the first terminal end toward the first start end and reaches the first start end, the first casing comes into contact with the connecting member, and Configured to restrict subsequent rotation of the first hinge;
When the second casing rotates from the second start end toward the second end and reaches the second end, the second casing contacts the connecting member, and The portable device according to claim 1, wherein the portable device is configured to restrict subsequent rotation of the second hinge. First rotation restricting means for restricting a rotation range of the first hinge from the first start end to the first end;
3. The portable device according to claim 1, further comprising a second rotation restricting unit that restricts a rotation range of the second hinge between the second start end and the second end. .

Images