JP2006105271A - Hinge device and electronic apparatus using hinge device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge device having a composition wherein a second member carrying out opening turning slides in an extending direction, and realizing the so-called free stop wherein click holding of a turning position is carried out, torque is generated during opening turning, and stoppage is carried out at a freed turning position. <P>SOLUTION: The hinge device is composed such that a first member 1 and the second member 2 are pivoted, rack teeth 3, and a gear 4 meshing with the rack teeth 3 are provided on the first member 1 and the second member 2 along the extending direction to which the first member 1 and the second member 2 are continuous in an opened state, and the second member 2 moves in the continuous extending direction with respect to the first member 1 when opening turning of the second member 2 is carried out. A click mechanism 8 is provided wherein one engagement part moving following movement of the gear 4 along the rack teeth 3, or turning following turning of the gear 4 is engaged or partly engaged with another engagement part 7 by pressing energization in an engagement direction in at least a closed state and the opened state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hinge device provided at a pivotally attached portion of an electronic device such as a mobile phone, a mobile, a notebook computer, a digital camera, and the like, and an electronic device using the hinge device.

  When the end members of the two members are pivotally attached, and when the other member is swung up and down with respect to one member from the closed state where they are overlapped with each other, it is configured to be in an open state in which each other's face is exposed. For example, even if a part where one member is not overlapped is provided in a part of one member in the closed state and a part that is always exposed is provided, the other member is covered above the part that is always exposed when it is opened. It will be unexposed.

  That is, the part to be always exposed is provided on the base end side of the upper surface of one member, and the base end part of the other member is pivotally attached not to the base end part of one end part but toward the front end side avoiding the part. Thus, even if it is configured not to overlap this portion, if the other member is opened and rotated, the other member comes to the upper surface of the portion that has not been overlapped.

  On the other hand, if the base end side of the member to be opened and closed is cut out in a U-shape and this is set to a shape that avoids the portion to be exposed as a window portion, this portion is exposed even if it is rotated open However, this notch will be vacant in an open state.

  In view of this, a hinge device has been developed in which the pivoting portion is configured to slide during opening rotation so that it is exposed even in a superposed state and the opening / closing portion does not come to the top of this portion even in the open state.

  Specifically, for example, in mobile phones, the two-screen method is popular. However, in the conventional two-screen method, for example, the main screen (first screen) is provided on the lower surface side of the opening / closing part so that it can be opened and exposed freely. In the closed state, the sub screen (second screen) provided on the back side opposite to the lower surface side of the opening / closing part comes to the upper surface, so this sub screen can be used even in the overlapped state. And the sub screen is opposite, so it cannot be seen at the same time.

  However, as described above, the pivoting part of the opening / closing part is configured to slide along with the opening rotation, so that a second screen is provided on the operation part base end side of the upper surface of the main body part, and the opening / closing part is overlapped. In this state, the operation part is overlapped and concealed, but it is not overlapped on this second screen, and when it opens and rotates, the pivoting part of the opening and closing part slides, so that the opening and closing part is located above this second screen. It is possible to realize a configuration in which the first screen on the lower side of the opening / closing part is exposed and the second screen is exposed in tandem with the opening and turning.

  That is, a second screen that is always exposed is provided in the main body, and this second screen can always be used even in the overlapped state, and in the open state, the second screen is continuously provided with the exposed first screen of the opening / closing portion. Therefore, two screens can be used even in an open state, and an epoch-making mobile phone that is extremely convenient when making a videophone call can be realized.

Japanese Patent Laid-Open No. 2004-112056

  However, simply by sliding the pivoting portion, the opening / closing rotation of the opening / closing portion fluctuates, and the positioning cannot be maintained both in the overlapped closed state and in the open state.

  The present invention further improves the above-described configuration, and can always expose a portion that is desired to be exposed in both a closed state and an open state. For example, a second screen can be provided in this portion to easily realize the two-screen method. Although it is configured, it is possible to realize a so-called free stop in which the opening and closing unit is stopped at the rotational position where the hand is released by releasing the hand by properly generating a click torque at a predetermined position and generating a rotational torque in the middle of the rotation with a simple configuration. It is an object of the present invention to provide a hinge device having excellent practicality, a hinge device having an epoch-making configuration capable of realizing this more easily, and an electronic apparatus using the hinge device.

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

  The first member 1 and the second member 2 are pivotally attached, and the first member 1 and the second member 2 are configured to be opened from the closed state where the first member 1 and the second member 2 are overlapped with each other to be in an open state in which the overlapping surface is exposed. The rack device 3 is provided with rack teeth 3 on the first member 1 or the second member 2 along an extending direction in which the first member 1 and the second member 2 are continuous when the hinge device is in an open state. The second member 2 or the first member 1 is provided with a gear 4 that meshes with the teeth 3 and rotates with the opening rotation. A guide portion 5 that guides the movement of the gear 4 along the rack teeth 3 is provided in the first member 1 or the second member 2, and the second member 2 is opened with respect to the first member 1. When rotating, the second member 2 moves forward with respect to the first member 1 along with the opening rotation. In the hinge device configured to move in a continuous extending direction, one of the engagements that moves as the gear 4 moves along the rack teeth 3 or rotates as the gear 4 rotates. The portion 6 is provided with a click mechanism 8 that engages or disengages in the other engaging portion 7 by pressing biasing in the engaging direction in at least the closed state and the open state, and at least the closed state and In the opened state, the rotation position of the second member 2 with respect to the first member 1 is click-held, and in the middle of the opening rotation, a rotation resistance is generated by the pressing bias of the click mechanism 8 in the engagement direction. The present invention relates to a hinge device that is configured as described above.

  Further, the second member 2 is provided so as to be able to move up and down relatively with respect to the first member 1, and the first member 1 has a lower surface from the closed state in which the second member 2 is superposed. The rack member 3 is configured to be openable and closable so as to be exposed, and the rack teeth 3 are arranged along the extending direction in which the first member 1 and the second member 2 are continuous in the open state. The second member 2 is provided with the gear 4 that meshes with the rack teeth 3 and rotates on the rack teeth 3 as the second member 2 opens and rotates. The first member 1 is provided with the guide portion 5 that guides the movement of the gear 4 by slidingly engaging the slide portion 9 that provides the gear 4 that moves in a freely rotating manner. The slide portion 9 and the guide portion 5 are 2. The hinge device according to claim 1, wherein the click mechanism is provided at a pivot shaft portion for pivotally attaching the gear mechanism or the gear to the slide portion. is there.

  Further, the slide portion 9 is provided in the guide groove 5A of the guide portion 5 arranged in the same direction as the rack tooth 3 so as to be slidable with the slide portion 9 being prevented from coming off, and the slide portion 9 meshes with the rack tooth 3. The gear 4 is pivotally mounted, and the one engaging portion 6 is provided in the slide portion 9 or the guide groove 5A, and the closed state and the open state are provided in the guide groove 5A or the slide portion 9. In the state, the engaging portion 6 and the other engaging portion 7 which is in the middle of the concave-convex engagement or in the middle of the concave-convex engagement are provided, and a spring material for energizing the concave-convex engagement is provided or the one engagement with the spring material. The hinge device according to any one of claims 1 and 2, wherein the click mechanism 8 is configured by forming the joint portion 6 or the other engagement portion 7.

  Further, the slide portion 9 is provided in the guide groove 5A of the guide portion 5 arranged in the same direction as the rack tooth 3 so as to be slidable with the slide portion 9 being prevented from coming off, and the slide portion 9 meshes with the rack tooth 3. The gear 4 is pivotally mounted, and the one engaging portion 6 is provided integrally with the slide portion 9 or the gear 4 or is prevented from rotating in the rotation direction, and the gear 4 or the slide is provided. In the closed state and in the opened state, the other engaging portion 7 that is in the concave-convex engagement or in the middle of the concave-convex engagement with the engaging portion 6 in the closed state and in the open state is provided integrally or in a non-rotating state in the rotational direction. The hinge device according to any one of claims 1 and 2, wherein the click mechanism 8 is configured by arranging a spring material for energizing the concave-convex engagement.

  Further, the main body portion is the first member 1 or the second member 2, the open / close portion is the second member 2 or the first member 1, and the main body portion 1 and the open / close portion 2 are defined in the first to fifth aspects. The present invention relates to an electronic device using a hinge device characterized by being pivotally connected by the hinge device according to any one of the above.

  Further, an operation unit 11 is provided on the upper surface of the main body 1, a display unit 12 is provided on the lower surface of the opening / closing unit 2, and a second display 13 is provided on the upper surface of the main body 1 on the opening / closing unit 2 side, Sometimes, the opening / closing part 2 is configured to conceal and conceal the operation part 11 but the second display 13 does not conceal and conceal the second member 2 from the closed state where the main body part 1 is overlapped. As a result, the opening / closing part 2 moves in a direction away from the main body part 1 so that the opening / closing part 2 covering the operation part 11 is not positioned above the second display 13 and also exposes the second display 13. The hinge device and the hinge device according to any one of claims 1 to 5, wherein the hinge device and the hinge device according to any one of claims 1 to 5 are configured such that the second display 13 is always exposed in a closed state and an open state. Depends on the electronic equipment used It is intended.

  Since the present invention is configured as described above, the second member is rotated relative to the first member by rotating the second member from the overlapped state with respect to the first member. For example, the lower surface of the second member may be exposed so as to be connected to the avoiding portion from the state where the predetermined portion of the first member is overlapped to avoid the predetermined portion. It becomes possible to design as possible. Therefore, for example, a two-screen openable mobile phone can be easily realized.

  For example, a second screen that is always exposed on the upper surface of the first member is provided, a shape that avoids the second screen is designed, and the second member that has the first screen provided on the lower surface is pivotally attached to the polymerization state. When the second member is opened and rotated from the closed state, the second screen and the first screen provided on the lower surface side of the second member are both slid in the extending direction together with the rotating shaft portion. It can be designed to be exposed in the extending direction.

  In addition, in the present invention, the second member that rotates and opens in this way is configured to slide in the extending direction. Is held by clicking and torque (rotation resistance) is generated in the middle of this opening rotation, and by adjusting this torque, a so-called free stop that stops at the released rotation position is realized. A revolutionary hinge device.

  In particular, in the invention described in claim 2, the hinge device is provided with a simple configuration and the functions and effects are reliably exhibited. In the inventions described in claims 3 and 4, the hinge device is easily realized with a simpler configuration. It becomes a hinge device with excellent practicality.

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

  For example, a portion that is always desired to be exposed is provided on the base end side of the upper surface of the first member 1, and the base end portion of the second member 2 that is set in a shape that avoids the portion that is always exposed is overlapped with the first member 1 slightly. It is pivotally attached to the tip side so that the polymerization can be freely opened. Therefore, in the closed state in which the first member 1 and the second member 2 are overlapped, the portion to be always exposed is not overlapped and can be exposed even in the closed state.

  When the second member 2 is opened and rotated with respect to the first member 1 from this closed state, the gear 4 is engaged with the rack teeth 3 and the gear 4 is moved along the rack teeth 3 and the guide portion 5 with the first member 1 and the second member 2. The member 2 opens and rotates while sliding in the extending direction of the member 2.

  Accordingly, in the opened state, the second member 2 that moves together with the gear 4 serving as the pivot shaft moves to move, so that the second member 2 is positioned above the portion that is always exposed by setting the amount of movement. Without moving, the pivot shaft moves to the base end portion of the first member 1 to be in an open state, so that it is in an extended state with the lower surface of the second member 2 without covering the portion that is always desired to be exposed. It will be possible to open the exposure.

  In addition, in the present invention, the click mechanism 8 is provided, and by this click mechanism 8, one of the engagements according to the movement of the gear 4 along the rack teeth 3 or the rotation of the gear 4 along with the opening rotation. The mating portion 6 moves or pivots, and at least in the closed state or in the open state, the one engaging portion 6 is spring-biased to the other engaging portion 7 so that the concave-convex engagement or the concave-convex engagement is in progress. It is click-held (with closing urging by the suction force, engagement positioning holding at the open position, etc.).

  Further, a rotational resistance is generated by the spring bias, and by setting the rotational resistance, a so-called free stop that stops at the rotational position where the hand is released can be easily realized.

  In addition, specifically, a slide portion 9 provided with the gear 4 so as to be rotatable is provided so as to be movable along the guide portion 5, and the click mechanism 8 is provided on the slide portion 9 and the guide portion 5. By providing the click mechanism 8 at the shaft-attached portion of the gear 4 and the slide portion 9, the click mechanism 8 that exerts the above-described operation / effect can be easily configured with a simpler configuration.

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

  The illustrated embodiment is an embodiment in which the present invention can be easily understood and is applied to a mobile phone that can be made compact in size, and is a first case in which electronic parts such as a circuit board and a power source are housed in a case. An operation unit 11 having a keyboard function in which numeric keys and function keys are arranged is provided on the upper surface side of a plate-like main body unit 1 as a member 1 and is superposed on the main body unit 1 to cover the operation unit 11 but always exposed. A plate-like opening / closing part 2 as a substantially identical second member 2 with a short length that does not cover the main part is configured to be pivotally connected by a hinge device H so that it can be pivoted up and down.

  Further, in this embodiment, the first screen 12 (display 12) is provided on the lower surface side of the second member 2 and the second member 2 is opened and rotated in a configuration that realizes a two-screen system having two display displays. The second screen 13 (second display) is provided so as to protrude slightly upward from the upper end of the upper surface of the first member 1, and the first screen 12, The second screen 13 is openly exposed in the extending direction, and the second screen 13 is not exposed to be concealed and is always exposed even in the overlapped state.

  That is, the end portions of the first member 1 and the second member 2 are not pivotally attached, and the end portion of the second member 2 is recessed so as to be able to turn up and down while avoiding the slightly raised second screen 13. The first base member 1 is provided in a undulating rotation from the state where the concave base end portion is pivotally attached to the first end portion of the first member 1 slightly so as to avoid the second screen 13 so as to avoid the second screen 13. The first member 1 and the second member 2 are configured to be openable and closable so as to be in the open state in which the concealed surfaces are exposed from the closed state in which the second member 2 is in a superposed state. The rack teeth 3 are provided on the side of the upper surface proximal end portion of the first member 1 along the extending direction in which the second member 2 is engaged with the rack teeth 3 and the second member 2 is opened and rotated. A rigid frame 15 in which the gear 4 rotating on the rack teeth 3 is provided at the concave base end of the second member 2. The guide part 5 that guides the movement of the gear 4 by slidingly engaging the slide part 9 that is provided and rotatably provided with the gear 4 that moves along the rack teeth 3 and that slides and guides the slide part 9. Is configured such that the second screen 13 of the first member 1 is provided on the side of the raised portion. In this embodiment (first embodiment), the click mechanism 8 is provided in the slide portion 9 and the guide portion 5, and in the second embodiment described later, the gear 4 is rotated to the slide portion 9. The click mechanism 8 is provided on a rotating shaft portion that is freely attached to the shaft.

  That is, in this embodiment, the operation unit 11 is provided on the upper surface of the main body 1, the display unit 12 is provided on the lower surface of the opening / closing unit 2, and the second display is provided on the upper surface of the main body 1 on the opening / closing unit 2 side. 13 is provided, the opening / closing part 2 is set to a short length so as not to superimpose the operation part 11 but the second display 13 is overlapped, and the closed state in which the second member 2 is overlapped with the main body part 1 The opening / closing part 2 is slid in the direction away from the main body part 1 by rotating to open, and the opening / closing part 2 covering the operation part 11 is not positioned above the second display 13 and is second. The display 13 is also open at the position where it is exposed, and the two screens are arranged side by side in the extending direction when opened, and the second display 13 is always exposed in both closed and open states. ing.

  More specifically, in the first embodiment shown in FIGS. 1 to 9, a rail member arranged in parallel with the rack teeth 3 is used as the guide portion 5, and the slide portion 9 is provided in the guide groove 5 </ b> A of the guide portion 5. The gear 4 is provided so as to be slidable in a state of being prevented from coming off and meshing with the rack teeth 3, and the gear 4 provided on the frame 15 is pivotally mounted on the slide portion 9. The one engaging portion 6 formed in a convex shape by the spring material 14 is provided in the portion 9 and the engaging portion 6 slides on the groove bottom of the guide groove 5A in the closed state and the opened state. The other engaging portion 7 that is in the middle of the depression-concave engagement or uneven engagement is provided.

  In the present embodiment, the engaging portion 6 (convex portion) is formed of the spring material 14 as described above without interposing a spring material separately, and this is pressed against the slide road surface disposed on the groove bottom of the guide groove 5A. A pressing bias is generated by the pressure contact, and thereby a resistance when the slide portion 9 slides together with the gear 4 with respect to the guide groove 5A of the guide portion 5 is generated, and a rotation resistance of the second member 2 is generated. I am letting.

  Further, a plate material which is disposed on the groove bottom of the guide groove 5A and forms a slide road surface is recessed and bent so that the slide road surface on the groove bottom of the guide groove 5A at the position where the guide groove 5A is almost closed is opened. The other engaging portion 7 is formed, and in the opened state, the one engaging portion 6 falls into the engaging portion 7 to engage with the concave and convex portions, and the opened state is positioned and held. A closing bias is generated by the suction force and the spring bias.

  Therefore, in the present embodiment, the slide portion 9 on which the gear 4 is rotatably provided is provided so as to be slidable by being prevented from coming off the guide portion 5, and the gear that is rotated along the rack teeth 3 by the slide portion 9. 4 is provided with a click mechanism 8 that engages the slide part 9 that slides and the guide groove 5A of the guide part 5 to engage and disengage at a predetermined slide position.

  In addition, at least one of the concave and convex engaging portions, that is, one engaging portion 6 provided on the slide portion 9 in this embodiment is formed in a convex shape by bending a leaf spring, and this is attached to the slide portion 9. Then, the engaging portion 6 having the spring action is configured to be pressed and urged against the slide road surface of the guide groove 5A, and an appropriate slide resistance is generated by adjusting the spring urging, that is, by selecting a spring material or bending degree. In addition, the member that forms the slide road surface is bent and formed to form the other engaging portion 7, and the engaging portion 6 is engaged with the concave portion (engaging portion 7) to engage and disengage. In the middle, a suction force is generated together with a spring bias, and a closing bias is favorably generated.

  In addition, an inclined surface (a portion protruding from the bottom) is formed around the concave portion (engagement portion 7), and after overcoming this, a convex portion (engagement portion 6) is formed in the concave portion (engagement portion 7). ) Is depressed and engaged so that click retention is further improved.

  As described above, in this embodiment, it is only necessary to form the engaging portions 6 and 7 that engage with the concave and convex portions in the pressing biased state on the slide portion 9 of the slide guide mechanism and the guide groove 5A of the guide portion 5, and in particular, this embodiment As shown in the example, it is only necessary to form the engaging portion 7 (concave portion) at an appropriate position of the guide groove 5A and provide the slide portion 9 with the convex engaging portion 6 formed by bending the leaf spring, so that assembly is easy. The click mechanism 8 can be assembled without deteriorating mass productivity.

  Further, in the second embodiment shown in FIGS. 10 to 13, the click mechanism 8 is provided on the rotating shaft portion for pivotally mounting the gear 4 on the slide portion 9 so as to be opened and closed. The one engaging portion 6 that rotates together with the rotation of the gear 4 that rotates with the opening rotation of the portion 2 is provided inside the frame 15 where the gear 4 is provided, and the closing portion 9 is closed on the slide portion 9. In this state and in the opened state, the engagement portion 6 is provided with the other engagement portion 7 that is unevenly engaged or in the middle of the uneven engagement in a rotationally stopped state, and a spring that biases the uneven engagement. The click mechanism 8 is configured by arranging a material 14.

  That is, in the structure of the portion where the gear 4 and the slide portion 9 are pivotally attached to the frame 15, the gear 4 is provided on the frame 15 in a non-rotating state and the rotary shaft portion 10 is provided in a non-rotating state. The sliding portion 9 is provided so as to be rotatable, and the one engaging portion is in a non-rotating state with respect to the rotating shaft portion 10 on the inner side of a frame 15 in which the gear 4 is provided in a non-rotating state on the outside. 6 is provided with a cam engaging portion 6 having a concave-convex cam surface, and on the other hand, the cam engaging portion 6 has a concave-convex shape on the cam engaging portion 6 so as to be non-rotating with respect to the slide portion 9 and to move away from the spring material 14 in the axial direction. The cam engagement portion 7 is provided as the other engagement portion 7 to be engaged, and the engagement portion 6 and the engagement portion 7 are click-held by the engagement of the cam in the open position, and are rotated. In the middle, the engaging portion 7 against the engaging portion 6 moves along the rotating shaft portion 10 against the spring material 14. In this state, the spring is biased to cause rotation resistance, and in the closed state, the cam is unevenly engaged again. A closing bias is generated by the force.

  Therefore, in the present embodiment, the slide portion 9 on which the gear 4 is rotatably provided is provided so as to be slidable by being prevented from coming off the guide portion 5, and the gear that is rotated along the rack teeth 3 by the slide portion 9. 4 is provided, and a click mechanism 8 is provided by using the rotary shaft portion 10 at a portion where the gear 4 is pivotally attached to the slide portion 9 that slides.

  In both the first embodiment and the second embodiment, a click mechanism 8 capable of performing a proper click operation without taking up space and without losing appearance can be incorporated into the frame 15, and this assembly is also easy. The hinge device has a small number of parts and can be realized with almost no change in the design layout.

  In particular, in the present embodiment, as described above, the cam portion is provided on the slide portion 9 so as to be slidable along the guide portion 5, and the engaging portion 7 is provided along the rotary shaft portion 10 in a non-rotating state in the cam case. In addition, an engaging portion 6 that engages and disengages with the engaging portion 7 is provided in a non-rotating state on the gear 4 (frame 15), so that the sliding member serves as a cam case. With the configuration in which the cam lock mechanism is assembled to the slide portion 9 as described above, the click mechanism 8 can be assembled without being inferior in mass production and extremely easy to assemble as described above.

  In this embodiment, since the rotary shaft portion 10 is rotatably provided on the slide portion 9, the slide portion 9 is slidably engaged with the guide portion 5 without contacting the bottom of the guide portion 5. .

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

It is a description perspective view in the obstruction | occlusion state of a 1st Example. It is an explanation perspective view in the open state of the first example. It is operation | movement explanatory drawing of a 1st Example and a 2nd Example. It is an explanation exploded perspective view of an important section of the 1st example. It is a description perspective view of the principal part of the obstruction | occlusion state of a 1st Example. It is a description perspective view of the principal part of the open state of a 1st Example. It is operation | movement explanatory side sectional drawing of the principal part of a 1st Example. It is operation | movement description front sectional drawing of the principal part of 1st Example. It is an explanatory perspective view in the open state of the 2nd example. It is a description disassembled perspective view of the principal part of 2nd Example. It is a description perspective view of the principal part of the obstruction | occlusion state of 2nd Example. It is a description perspective view of the principal part of the open state of 2nd Example. It is operation | movement description front sectional drawing of the principal part of 2nd Example.

Explanation of symbols

1 First member (main part)
2 Second member (opening / closing part)
3 rack teeth 4 gear 5 guide portion 5A guide groove portion 6 one engaging portion 7 other engaging portion 8 click mechanism 9 slide portion
11 Operation unit
12 Display section
13 Second display section

Claims (6)

  The hinge device is configured such that the first member and the second member are pivotally attached, and the first member and the second member are rotated from the closed state where the first member and the second member are overlapped with each other to be in an open state in which the overlapping surface is exposed. When the open state is established, the rack teeth are provided on the first member or the second member along the extending direction in which the first member and the second member are continuous, and mesh with the rack teeth and the opening rotation. A gear that rotates along with the second member or the first member is provided on the second member or the first member, and a guide that guides the movement of the gear along the rack teeth. When the second member is opened and rotated with respect to the first member, the second member is provided with respect to the first member. A hinge device configured such that the member moves in the continuous extending direction. The one engaging portion that moves with the movement of the gear along the rack teeth or rotates with the rotation of the gear is in the engagement direction at least in the closed state and the released state. A click mechanism that engages or disengages in the other engaging portion due to the pressing bias is provided so that the rotation position of the second member with respect to the first member is clicked at least in the closed state and the open state. A hinge device configured to generate a rotation resistance by being pressed and biased in the engagement direction of the click mechanism in the middle of opening rotation.   The second member is provided so as to be able to rotate up and down relatively with respect to the first member, and the open state in which the lower surfaces are exposed to each other from the closed state in which the second member is superposed on the first member; The rack teeth are provided in the first member along the extending direction in which the first member and the second member are continuous in the open state, and meshed with the rack teeth. The second member is provided with the gear that rotates on the rack teeth as the second member is opened and rotated, and a slide portion that is rotatably provided with a gear that moves along the rack teeth is a retaining member. The slide part is guided by sliding, and the guide part for guiding the movement of the gear is provided in the first member, and the click mechanism or the gear is provided in the slide part and the guide part. Rotate to slide The hinge apparatus according to claim 1, characterized by providing the click mechanism on the pivot shaft portion pivotally connected to the stationary.   A slide groove is provided in the guide groove of the guide portion arranged in the same direction as the rack teeth so that the slide portion is prevented from coming off and is slidably movable. The gear meshing with the rack teeth is pivotally attached to the slide portion. The sliding part or the guide groove is provided with the one engaging part, and the guide groove or the sliding part is engaged with the engaging part in the closed state or in the open state. The click mechanism is provided by providing the other engaging portion that is in the middle of the coupling, and providing a spring material for energizing the concave-convex engagement or forming the one engaging portion or the other engaging portion with a spring material. The hinge device according to any one of claims 1 and 2, wherein the hinge device is configured.   A slide groove is provided in the guide groove of the guide portion arranged in the same direction as the rack teeth so that the slide portion is prevented from coming off and is slidably movable. The gear meshing with the rack teeth is pivotally attached to the slide portion. The one engaging portion is provided integrally with the slide portion or the gear or in a rotationally stopped state, and the gear or the slide portion is engaged in the closed state and the open state. The click portion is provided with the other engagement portion that is in a concave-convex engagement with each other or in the middle of the concave-convex engagement in a state of being integrally or in a rotation-prevented state, and a spring material that biases the concave-convex engagement is provided in the click The hinge apparatus according to claim 1, wherein the mechanism is configured.   The main body portion is the first member or the second member, the opening / closing portion is the second member or the first member, and the main body portion and the opening / closing portion are described in any one of the preceding claims. An electronic apparatus using a hinge device, wherein the electronic device is pivotally connected by a hinge device. An operating part is provided on the upper surface of the main body part, a display part is provided on the lower surface of the opening / closing part, a second display is provided on the upper surface of the main body part on the opening / closing part side, The shape of the second display is set so as not to be concealed but overlapped, and the opening and closing part moves away from the body by rotating the second member from the closed state where the second member is overlapped with the body. Thus, the opening / closing part covering the operation part is not located above the second display but is opened at a position where the second display is exposed, and the second display is always exposed in the closed state or the opened state. The hinge device according to any one of claims 1 to 5, and an electronic apparatus using the hinge device.

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