JP4152342B2 - HINGE DEVICE AND ELECTRONIC DEVICE USING HINGE DEVICE - Google Patents

Description

  The present invention relates to a hinge device and an electronic apparatus using the hinge device.

  For example, a conventional foldable mobile phone is provided with an operation unit on which the numeric keys and function keys are arranged on the upper surface side of the lower main unit, and a liquid crystal panel on which a predetermined display is made by the key operation of the operation unit. The display part is provided on the lower surface side (polymerization side) of the superposition part on the upper side, this main part and superposition part are connected via a hinge device, and the main part and superposition part are folded in half and operated From the folded closed state in which the portion is concealed by the overlapping portion, the overlapping portion is turned upside down by the hinge device and reversed to be switched to an open state in which the operation portion and the display portion are exposed.

  Therefore, in a conventional electronic device that covers the operation part of the main body part with such a undulating and rotating superposition part, it can be folded and compactized, but the display part is also concealed in a superposition state where the operation part is concealed In many cases, use in a compact state is inevitably restricted.

  In addition, when operating the operation unit, it is necessary to raise and turn the heavy overlapping unit provided with the display unit, and there is a drawback that it is difficult to perform this opening / closing operation (especially the opening operation) (in recent years, the camera mechanism). As the number of models equipped with more and more, this superposition part tends to become heavy.)

  Therefore, instead of opening and closing by rolling up and down, it is configured to open and close by rotating the overlapping part in a substantially horizontal direction along the overlapping surface, for example, folded when not in use or requiring no key operation Even in other words, even in a compact state where the operation unit is concealed by superimposing the overlapped part provided with the display part on the main body part, the display part is arranged on the upper side so that the display part can be seen or functioned. In addition, when switching from a superposed and compacted state to a state in which the operation unit and the display unit are exposed and the main body unit and the superposed unit are connected, the horizontal direction along the superposition surface Since it can be performed by rotating the overlapping portion, this opening operation can be easily performed, and the usage can be expanded as a device and the opening / closing operation can be easily performed. Electronic devices and the like have been proposed.

  As a result of repeated trial and error in order to improve the practicality of such an electronic device of, for example, the horizontal rotation type, the applicant of the present invention has achieved a revolutionary hinge device with extremely high commercial value and an electronic device using the hinge device. Developed.

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

A first member 1 and second member 2 pivoted, a relatively rotating allowed to hinge the first member 1 relative to the second member 2, the coupling to the first member 1 the pivot shaft portion 4 to the first connecting portion 3 is provided, the bearing portion 6 of the rotating shaft 4 is engaged rotatably provided on the second connecting portion 5 for connecting to the second member 2, the first The connecting portion 3 has the cam portion 8 having the first convex portion 7A and the second convex portion 7B, or the first concave portion 9A and the second concave portion 9B which are rotated together with the rotating shaft portion 4 and are not on the same circumference. The cam engaging portion 10 is provided, and the cam engaging portion 10 or the first convex portion 7A has the first concave portion 9A and the second concave portion 9B at positions not rotating on the same circumference by rotating together with the bearing portion 6. , provided the cam portion 8 having the second convex portion 7B to the second connecting portion 5, and concavo-convex engaging by the relative rotation the Cam portion 8, the engagement separating direction provided with slidably moving at least one along the pivot shaft portion 4 of the cam engaging portion 10, the cam portion 8, at least one of the cam engaging portion 10 An engagement biasing mechanism 11 that biases in the engagement direction when moving in the disengagement direction at the time of engagement / disengagement is provided, and the first member 1 and the second member 2 are relatively rotated to make one rotation. so that said cam engaging portions 10 and the cam portion 8 at the position P1 is uneven engagement with biased engagement, the engagement is or Kakarigozuke biased held by the engagement biasing mechanism 11 Configured so that either one of the cam portion 8 and the cam engagement portion 10 is moved in the separation direction against the engagement biasing mechanism 11 and is relatively rotated in either one of the left and right directions. When the first convex portion 7A and the second convex portion 7B are engaged with and disengaged from the first concave portion 9A and the second concave portion 9B. The first downward surface portion 12A and the second downward surface portion 12B in which the first convex portion 7A and the second convex portion 7B slide with the urging force of the engagement urging mechanism 11 are used as the cam portion 8 or the cam engaging portion. 10 at positions that are not on the same circumference, and either one of the cam portion 8 or the cam engagement portion 10 is moved in the separation direction against the engagement biasing mechanism 11 in either the left or right direction. When the first convex portion 7A and the second convex portion 7B are engaged with and disengaged from the first concave portion 9A and the second concave portion 9B by relative rotation, the first convex portion 7A and the second convex portion 7B The position where the second descending surface portion 12C and the fourth descending surface portion 12D in which the second convex portion 7B slides with the bias of the engagement biasing mechanism 11 is not on the same circumference of the cam portion 8 or the cam engaging portion 10 And the first member 1 and the second member 2 are moved to another rotation position P2 different from the one rotation position P1. It is configured so as to generate an automatic rotation bias that rotates counterclockwise, and when the cam portion 8 and the cam engagement portion 10 are relatively rotated, they are disengaged from the first concave portion 9A and the second concave portion 9B. The first convex portion 7A and the second convex portion 7B are simultaneously in contact with the first downward surface portion 12A, the second downward surface portion 12B or the third downward surface portion 12C, and the fourth downward surface portion 12D. it is configured to slide those of the hinge device according to claim.

  2. The hinge device according to claim 1, wherein a rotation range from the one rotation position P1 to another rotation position P2 is set to a rotation range of 180 [deg.].

Further, the cam portion 8 or the cam engagement portion and the cam engagement portion 10 of the engagement recess 13 of the convex part 7 is depressed engaging the lower portion of the down surface portion 12 in which the protrusion 7 is sliding provided in 10 Or it is provided in the said cam part 8, It concerns on the hinge apparatus of any one of Claim 1 and 2 characterized by the above-mentioned.

Further, any one of claims 1 to 3, characterized in that a over-rotation preventing mechanism 17 for preventing relative excessive rotation by with automatic turning force of the first member 1 relative to the second member 2 1 This relates to the hinge device described in the item.

Further, the main body portion provided with the operation unit 14 and the superposition unit provided with the display unit 15 are superposed and disposed so as to cover the operation unit 14 when the operation unit 14 is not operated. In order to be able to rotate the overlapping portion relatively horizontally to expose the operation portion 14, the main body portion and the overlapping portion are rotatably connected to each other. the body portion and the first member 1 or the second member 2, the hinge device according to the overlap portion in any one of the claims 1 to 4 and the second member 2 or the first member 1 The present invention relates to an electronic apparatus using a hinge device characterized by being used.

  Since the present invention is configured as described above, it is possible to provide an extremely convenient pivot attachment structure with excellent operability as compared with a conventionally proposed hinge device. Hinge device.

Further, in the inventions according to claims 2 to 4 , it is an epoch-making hinge device with extremely high commercial value, such as being able to provide a very convenient pivot attachment structure with excellent operability.

Further, in the invention described in claim 5 , the electronic device uses an epoch-making hinge device with extremely high commercial value such as excellent operability and very convenient.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 main body provided with the operation unit 14 and a superposition unit provided with the display unit 15 are arranged so as to cover the operation unit 14 when the operation unit 14 is not operated. When the present invention is applied as a hinge device that pivotally connects the main body portion and the overlapping portion so that the operation portion 14 can be exposed by relatively rotating the portion horizontally, specifically, For example, if the second member 2 is a main body provided with an operation part 14 and the first member 1 is a superposition part provided with a display part 15, the end devices are superposed and connected by this hinge device. The superposition part 1 can be connected to the main body part 2 so as to be rotatable in a substantially horizontal direction. When the operation part 14 is not operated, the main body part 2 and the superposition part 1 are covered so as to cover the operation part 14 for compactness. The top and bottom are arranged in a superposition, and this compact In the combined state, since the display unit 15 is arranged on the upper surface side of the overlapping unit 1, the display unit 15 can be visually recognized even if the operation unit 14 cannot be operated, and the display unit 15 is made to function. If configured, the display unit 15 can be visually recognized, for example, by displaying a date or calendar that is set in advance by the operation unit 14 or performing a data communication display (for example, an incoming call display on a mobile phone). Various uses are possible, the usage is expanded, the functionality is improved, it becomes very convenient and the practicality (commercial value) increases.

  By the way, in the present invention, when the operation unit 14 of the main body 2 is exposed, if the superposition unit 1 is horizontally rotated to a predetermined position with respect to the main body 2, then the superposition unit 1 with respect to the main body 2. Is automatically rotated horizontally, and the operation unit 14 of the main body 2 is exposed.

  Specifically, the overlapping portion 1 (first member) and the main body portion 2 (second member) are relatively rotated so that the cam portion 8 and the cam engagement portion 10 are engaged at one rotation position P1. It is configured so that the engagement is uneven and the engagement is maintained or the engagement is biased by the engagement biasing mechanism 11, and either the cam portion 8 or the cam engagement portion 10 is engaged. Convex provided on the cam part 8 or the cam engaging part 10 with respect to the concave part 9 provided on the cam engaging part 10 or the cam part 8 by rotating while moving in the separating direction against the urging mechanism 11 When the cam part 8 is disengaged, the cam part 8 or the cam engaging part 10 is provided with a descending surface part 12 on which the convex part 7 provided on the cam engaging part 10 or the cam part 8 slides. An automatic rotation urging force that causes the main body 2 to rotate relative to another rotation position P2 different from the one rotation position P1 is generated.

  That is, when the convex portion 7 provided on the cam portion 8 or the cam engaging portion 10 engages with the concave portion 9 provided on the cam engaging portion 10 or the cam portion 8 and is positioned at one rotation position P1, it is overlapped. When the part 1 is in a state of being superposed on the main body part 2, when the convex part 7 is disengaged from the concave part 9 by rotating the superposed part 1 relative to the main body part 2, the convex part 7 The overlapping portion 1 is different from the one rotation position P1 with respect to the main body portion 2 by the automatic turning bias generated by sliding the descending surface portion 12 provided on the cam engaging portion 10 or the cam portion 8. The operation part 14 of the main body 2 is exposed by automatically turning horizontally to the moving position P2.

  Therefore, in the case of a conventionally proposed hinge device, the overlapping portion 1 is changed from the overlapped state to the exposed state, for example, until the operation portion of the main body portion 2 is exposed with the hand opposite to the hand having the main body portion 2. In this respect, according to the present invention, for example, the overlapping portion 1 is simply rotated horizontally to a predetermined position with a finger of a hand having the main body portion 2. It will automatically rotate horizontally until the operation part 2 is exposed, which is very convenient and excellent in operability. Further, when the operation unit of the main body is concealed again by the superimposing unit 1, the superposed unit with respect to the main body 2 to the position where the convex portion 7 engages with the concave portion 9 by using a hand or the like. 1 is rotated horizontally.

Further, according to the present invention , the first member 1 can be rotated relative to the second member 2 in either the left or right direction. In addition, the handleability will be dramatically improved, and even when the relative rotation is performed in either the left or right direction, the first member 1 is merely rotated to the predetermined position with respect to the second member 2, After that, the first member 1 is automatically rotated to a predetermined position, which is more convenient because it is more excellent in operability.

It is described with reference to the accompanying drawings concrete examples 1.

In the first embodiment , the present invention is applied to a mobile phone that can be made compact in size. On the upper surface side of a plate-like second member 2 (main body portion 2) in which electronic parts such as a circuit board and a power source are housed in a case. An operation unit 14 in which numeric keys, function keys, and the like are arranged is provided, and a substantially identical plate-shaped first member 1 (overlapping unit 1) that overlaps the main body unit 2 and covers the operation unit 14 can be rotated substantially horizontally. The hinge device H is connected to the shaft.

  A display unit 15 such as a liquid crystal panel is provided on the upper surface side of the superimposing unit 1 so that a predetermined display is made by a preset screen or operation of the operation unit 14 or an incoming call.

  The main body 2 and the overlapping portion 1 are connected by connecting the overlapping portions of both ends with a hinge device H having a rotating shaft portion arranged in the vertical direction, and rotating the rotating shaft portion. As a support shaft, it is connected to be rotatable in a substantially horizontal direction.

  Further, both the main body 2 and the overlapping portion 1 are formed so as to be slightly raised and inclined with respect to the end overlapping portion where the hinge device H is assembled (if the main body 2 is arranged horizontally, the end is slightly raised and inclined). When the superposition part 1 is horizontally rotated approximately 180 degrees from the superposed state so that the main body part 2 and the superposition part 1 are arranged in a straight line, the display part 15 of the superposition part 1 is in relation to the main body part 2. It is configured to be easy to see because it is tilted as if it was slightly raised.

Next, the hinge apparatus H of Example 1 will be described.

In the first embodiment , as shown in FIGS. 1 to 4, the first connecting portion 3 made of a metal plate fixed to the overlapping portion 1 with screws or the like is provided, and the metal cylinder fixed to the main body portion 2 with screws or the like. A second connecting portion 5 made of metal is provided, and the first connecting portion 3 and the second connecting portion 5 are pivotally connected to each other via the rotating shaft portion 4 and the bearing portion 6, so that the first member 1 is connected. The second member 2 is configured so as to be capable of relative rotation in either the left or right direction from the overlapped state.

  Specifically, the first connecting portion 3 connected to the overlapping portion 1 is connected to the distal end portion 4a of the rotating shaft portion 4 in a non-rotating state, and the second connecting portion 5 connected to the main body portion 2 is rotated. A cylindrical bearing portion 6 with which the shaft portion 4 is rotatably engaged is provided.

  In addition, the first connecting portion 3 is provided with a cam engaging portion 10 having a V-shaped concave portion 9 that rotates together with the rotating shaft portion 4 in a non-rotating state. A cam portion 8 having a V-shaped convex portion 7 that rotates together with a bearing portion 6 that is slidably fitted is provided on the second connecting portion 5 in a non-rotating state, and this relative rotation is performed. The cam portion 8 is provided so as to be slidable in the engagement / separation direction along the rotation shaft portion 4, and the coil spring is biased in the engagement direction when the cam portion 8 moves in the separation direction when the cam portion 8 is engaged / disengaged. An engagement urging mechanism 11 is provided.

  Accordingly, the overlapping portion 1 and the main body portion 2 are relatively rotated so that the convex portion 7 of the cam portion 8 and the concave portion 9 of the cam engaging portion 10 are engaged and urged at one rotational position P1. Then, the engagement is maintained or is urged by the engagement urging mechanism 11 (see FIGS. 7 and 8). Reference numeral 16 denotes a washer.

Further, in the first embodiment , the cam portion 8 is turned against the concave portion 9 provided in the cam engagement portion 10 by rotating the cam portion 8 while sliding the cam portion 8 against the engagement biasing mechanism 11. The descending surface portion 12 (inclination with a smooth surface) that the convex portion 7 provided on the cam portion 8 slides with the urging force of the engagement urging mechanism 11 when the convex portion 7 provided is engulfed and disengaged. Surface) is provided on the cam engaging portion 10, and when the convex portion 7 slides on the descending surface portion 12, the first member 1 and the second member 2 are rotated by 180 ° from the one rotation position P1. An automatic rotation bias that causes relative rotation to another rotation position P2 that falls within the range is generated (see FIGS. 7 and 8).

  Specifically, the cam portion 8 is moved in the separation direction against the engagement urging mechanism 11 and rotated in the right direction so that the cam portion 8 has the recess 9 provided in the cam engagement portion 10. When the provided convex portion 7 gets on and is disengaged (rotational position P3 rotated about 45 ° rightward from the rotational position P1), the convex portion 7 provided on the cam portion 8 is engaged with the engagement bias. A first descending surface portion 12A that slides with the urging of the mechanism 11 is provided in the cam engaging portion 10, and conversely, the cam portion 8 moves in the left direction against the engaging urging mechanism 11 while moving in the left direction. When the convex portion 7 provided on the cam portion 8 is mounted on and disengaged from the concave portion 9 provided on the cam engaging portion 10 by rotating it (rotated leftward by about 45 ° from the rotational position P1). The cam engaging portion 10 is provided with a second descending surface portion 12B in which the convex portion 7 provided on the cam portion 8 slides with the urging force of the engagement urging mechanism 11.

  Therefore, when the convex portion 7 provided on the cam portion 8 is engaged with the concave portion 9 provided on the cam engaging portion 10 so as to engage with the concave and convex portions, the overlapping portion 1 overlaps the main body portion 2 when positioned at one rotation position P1. When the state where the operation part 14 is concealed (the state where the operation part 14 is concealed), when the convex part 7 is disengaged from the concave part 9 by rotating the overlapping part 1 in the left or right direction with respect to the main body part 2 The convex portion 7 has an automatic rotation bias generated by sliding the first descending surface portion 12A or the second descending surface portion 12B provided in the cam engaging portion 10, so that the overlapping portion 1 is one with respect to the main body portion 2. The operating portion 14 of the main body 2 is exposed by horizontally turning automatically from the turning position P1 to another turning position P2 within a turning range of 180 °. It functions even when the overlapping portion 1 at one rotation position P1 is horizontally rotated in either the left or right direction.

Further, in the first embodiment, the convex portion 7 falls to the descending end position (rotation position P2) at the lower portion of the descending surface portion 12 on which the convex portion 7 provided on the cam portion 8 slides. A locking recess 13 having a V-shape when viewed from the front is provided.

  The locking recess 13 is for stopping the overlapping portion 1 that automatically rotates horizontally with respect to the main body 2, and the locking recess 13 prevents the overlapping portion 1 from over-rotating with respect to the main body 2. In addition, the overlapping portion 1 is configured so as to be linear with respect to the main body portion 2.

In the first embodiment, an over-rotation prevention mechanism 17 that prevents relative over-rotation of the overlapping portion 1 with respect to the main body 2 is provided. Even when the part 1 is relatively rotated in the left or right direction from the overlapped state, the relative overturning is prevented at the same phase position where the overlapping part 1 is linearly connected to the main body part 2. (See FIG. 8).

  Specifically, the over-rotation preventing mechanism 17 is connected to the first connecting portion 3 in a non-rotating state, and is a cylindrical stopper member that is connected to the second connecting portion 5 so as to be relatively rotatable. 18 is provided, and an annular fitting member 19 that is rotatable relative to the stopper member 18 in either the left or right direction is fitted and connected, and between the stopper member 18 and the fitting member 19 The stopper member 18 is provided with a first abutting and locking mechanism 20 in which both the fitted members 19 are jointly rotated in the left-right direction by locking against each other regardless of whether the stopper member 18 rotates in the left or right direction. Even when both the member 18 and the fitted member 19 are jointly rotated in either the left or right direction, the second abutting locking mechanism 21 that prevents the joint rotation by abutting and locking is provided with the fitted member 19 and the second fitting member 19. The connecting portion 5 is provided.

  More specifically, the first abutment locking mechanism 20 includes a first engagement member protruding from one end edge (upper edge) of the fitted member 19 when the stopper member 18 rotates in the left and right directions. A first abutting portion 23 that abuts and engages with each of the left and right side portions of the stopper portion 22 protrudes from the stopper member 18, and one of the first abutting portions 23 is rotated by rotating the stopper member 18 to the right. When the side portion 23a of the first contact portion 22 abuts and is engaged with one side portion 22a of the first locking portion 22, both the stopper member 18 and the fitted member 19 rotate together in the right direction, and conversely, the stopper member 18 The first abutting portion 23 is rotated substantially to the left so that the other side portion 23b of the first abutting portion 23 abuts against the other side portion 22b of the first locking portion 22. By stopping, both the stopper member 18 and the fitted member 19 are provided so that they can rotate together in the left direction. It is configured.

  When the stopper member 18 and the fitted member 19 are both rotated together in the right direction by the first abutment locking mechanism 20, the second engagement is provided at the other end (lower end edge) of the fitted member 19. A second abutting portion 25 that abuts and locks against one side portion 24a of the stopping portion 24 to prevent its joint rotation protrudes from the upper surface of the second connecting portion 5, and on the contrary, is fitted to the stopper member 18 When the member 19 and the member 19 are jointly rotated in the left direction, the third abutment that abuts and locks against the other side 24b of the second engaging portion 24 provided on the fitted member 19 to prevent the joint rotation. The second abutting locking mechanism 21 is configured with the portion 26 as an upper surface of the second connecting portion 5 and projecting at a position via the second abutting portion 25 and a predetermined distance S (see FIG. 4).

  Further, the first abutting locking mechanism 20 and the second abutting locking mechanism 21 constituting the over-rotation preventing mechanism 17 relatively rotate the first connecting portion 3 in the left direction with respect to the second connecting portion 5. When the first connecting portion 3 provided in the first connecting portion 3 is rotated and stopped relative to the position where the first abutting portion 23 is stopped and the second connecting portion 5 is rotated to the right. The position where the first abutting portion 23 provided in one connecting portion 3 stops rotating is the same position (see FIG. 9).

That is, the first embodiment is configured such that the first abutting portion 23 is prevented from over-rotating at the same phase position when the rotating shaft portion 4 rotates in either the left or right direction within the range of 360 °. This is because the thickness (width) of the first abutting portion 23, the thickness (width) of the first locking portion 22 and the second locking portion 24, and the second abutting and locking mechanism 21 This is realized by setting the distance S between the abutting portion 25 and the third abutting portion 26 (see FIG. 9). In the first embodiment , until the first abutting portion 23 of the first connecting portion 3 abuts against and locks against the first locking portion 22 of the fitted member 19, the first connecting portion 3 is in contact with the fitted member 19. Until the second locking portion 24 of the fitted member 19 hits against the second butting portion 25 and the third butting portion 26 of the second connecting portion 5 and can be rotated in both directions. The fitted member 19 is configured to be able to rotate 60 ° in either of the left and right directions with respect to the second connecting portion 5. In short, the relative rotation range R1 between the first connecting portion 3 and the fitted member 19 restricted by the first abutting locking mechanism 20, and the second connecting portion 5 restricted by the second abutting locking mechanism 21. What is necessary is just to set so that the sum (R1 + R2) with relative rotation range R2 with the fitting member 19 may be 360 degrees.

  When the main body 2 and the overlapping portion 1 are connected to each other in the horizontal direction through the hinge device H provided with the over-rotation preventing mechanism 17 having the above configuration, the overlapping portion 1 is The over-rotation prevention mechanism 17 functions in a position where it is linearly connected to the main body 2 so that the rotation is prevented (see FIG. 8).

  This assembly is advantageous in consideration of twisting of wiring or the like disposed between the main body portion 2 and the overlapping portion 1.

  In other words, this is a case where the superposed part 1 is superposed on the main body 2 and the wiring is not twisted. If the superposed part 1 is superposed on the main body 2 at a position where it is superposed. When assembled so that the over-rotation prevention by the rotation prevention mechanism 17 functions, the overlapping portion 1 can be rotated 360 ° relative to the main body portion 2 from the overlapped state, so that the wiring is rotated by 360 °. In this point, when assembled so that the over-rotation prevention mechanism 7 functions in the position where the overlapping portion 1 is linearly connected to the main body portion 2, Since it does not rotate in the same direction by 180 ° or more at the maximum from the superposed state, the twisting of the wiring or the like is prevented as much as possible.

Since the first embodiment is configured as described above, for example, by simply horizontally rotating the overlapping portion 1 to a predetermined position with a finger of the hand having the main body portion 2, the overlapping portion 1 exposes the operation portion of the main body portion 2 thereafter. It will automatically rotate horizontally until it is in a state of being able to do so, and it is very easy to use and convenient. Further, when the operation unit of the main body is concealed again by the superimposing unit 1, the superposed unit with respect to the main body 2 to the position where the convex portion 7 engages with the concave portion 9 by using a hand or the like. 1 is rotated horizontally.

Moreover, since Example 1 can relatively rotate the superposition | polymerization part 1 with respect to the main-body part 2 in either direction on either side, for example, a user can be rotated in the direction which is easy to rotate each time, Handleability will be greatly improved. Moreover, even when the relative rotation is performed in either direction, it is only necessary to rotate the overlapping portion 1 to a predetermined position with respect to the main body portion 2, and then the polymerization is performed. The part 1 is automatically rotated to a predetermined position, which is very convenient because it is more excellent in operability.

It is described with reference to the accompanying drawings concrete example 2.

In the second embodiment , a cam portion 8 having a plurality of convex portions 7 rotating with the bearing portion 6 or a cam engaging portion 10 having a plurality of concave portions 9 is provided on the second connecting portion 5. A cam engaging portion 10 having a plurality of concave portions 9 rotating with the moving shaft portion 4 or a cam portion 8 having a plurality of convex portions 7 is provided.

  Specifically, as shown in FIG. 10, the rotation shaft portion 4 is placed at a position not on the same circumference of the bearing hole opening end portion 6 </ b> A of the bearing portion 6 into which the rotation shaft portion 4 is fitted and engaged. A cam portion 8 having a first convex portion 7A and a second convex portion 7B or a cam engaging portion 10 having a first concave portion 9A and a second concave portion 9B is provided at the sandwiched position, and the bearing hole opening end portion of the bearing portion 6 is provided. 6A A cam having a first concave portion 9A and a second concave portion 9B at opposite positions sandwiching the rotary shaft portion 4 at a position that is not on the same circumference of the butting end portion 4A of the rotary shaft portion 4 that is in abutting state with 6A. The cam portion 8 having the engaging portion 10 or the first convex portion 7A and the second convex portion 7B is provided, and one of the cam portion 8 and the cam engaging portion 10 is separated from the engaging biasing mechanism 11. The first convex portion 7A and the second convex portion 7 with respect to the first concave portion 9A and the second concave portion 9B are relatively rotated in either the left or right direction while being moved in the direction. When the first convex portion 7A and the second convex portion 7B slide with the urging force of the engagement urging mechanism 11 when the B is engaged and disengaged, the first downward surface portion 12A and the second downward surface portion 12B are butt end portions. 4A or bearing hole opening end portion 6A is not located on the same circumference, and is provided at a position facing the rotation shaft portion 4, and either one of the cam portion 8 and the cam engagement portion 10 is engaged. The first convex portion 7A and the second convex portion 7B are moved with respect to the first concave portion 9A and the second concave portion 9B by moving the first convex portion 9A and the second concave portion 9B relative to each other while moving in the separation direction against the biasing mechanism 11. When engaged and disengaged, the first and second convex portions 7A and 7B slide with the urging force of the engagement urging mechanism 11, and the third descending surface portion 12C and the fourth descending surface portion 12D are butt end portions or bearings. The first member 1 and the second member 2 are provided at opposite positions with the rotation shaft portion 4 sandwiched between them at positions that are not on the same circumference of the hole opening end 6A. When the cam portion 8 and the cam engagement portion 10 are rotated relative to each other, the automatic rotation bias is generated so as to relatively rotate to another rotation position P2 different from the one rotation position P1. The first convex portion 7A and the second convex portion 7B that are disengaged from the first concave portion 9A and the second concave portion 9B simultaneously serve as the first downward surface portion 12A, the second downward surface portion 12B, or the third downward surface portion 12C, and the fourth downward surface portion 12D. It is configured to slide in a contact state at a plurality of locations.

  Accordingly, this contributes to smooth relative rotation between the first member 1 and the second member 2.

  That is, for example, when the convex portion 7 provided in the cam portion 8 that engages with the concave portion 9 provided in the cam engaging portion 10 and slides with respect to the descending surface portion 12 is constituted by one, this single convex portion 7. Is in a one-point contact state (so-called cantilever state) that is supported at one point when sliding down the descending surface portion 12, the cam portion 8 and the cam engagement portion 10 that rotate relative to each other via the rotation shaft portion 4. It is conceivable that a force is applied between the two members in the tilt direction, that is, an eccentric load is applied between the rotating shaft portion 4 and the bearing portion 6 that rotate relative to each other. There are concerns that various problems may occur, such as a problem of sticking and a problem that the rotation of the rotation shaft portion 4 is not performed well and the automatic rotation bias does not function well.

In this respect, the second embodiment is provided with a plurality of convex portions 7 provided on the cam portion 8, concave portions 9 provided on the cam engaging portion 10, and descending surface portions 12, so that the cam portion 8 and the cam engaging portion 10 are relatively arranged. Since each convex part 7 engaged / disengaged from each concave part 9 will slide at the same time in a state where a plurality of descending surface parts 12 are in contact with each other at the time of rotation, a more stable state can be obtained. Thus, it is possible to prevent a force from being applied in the inclined direction as described above between the cam portion 8 and the cam engaging portion 10 that rotate relative to each other via the rotation shaft portion 4, and to rotate relative to each other. It is possible to prevent as much as possible that an uneven load is generated between the moving shaft portion 4 and the bearing portion 6.

Therefore, Example 2 can provide good relative rotation between the first member 1 and the second member 2.

  The present invention is not limited to the first and second embodiments, and the specific configuration of each component can be designed as appropriate.

FIG. 3 is an explanatory diagram of a use state of the first embodiment. FIG. 3 is an explanatory diagram of a use state of the first embodiment. 3 is an explanatory cross-sectional view of a main part according to Embodiment 1. FIG. 1 is an exploded perspective view showing Example 1. FIG. FIG. 3 is a perspective view of a main part according to the first embodiment. FIG. 3 is a side view of a main part according to the first embodiment. 2 is a plan view of a main part according to Embodiment 1. FIG. FIG. 3 is a schematic operation explanatory diagram of the first embodiment. FIG. 6 is an operation explanatory diagram of a main part according to the first embodiment. FIG. 6 is a perspective view of a main part according to a second embodiment.

Explanation of symbols

P1 One rotation position P2 Other rotation positions 1 First member 2 Second member 3 First connecting portion 4 Rotating shaft portion 5 Second connecting portion 6 Bearing portion 7 Convex portion
7A 1st convex part
7B Second convex part 8 Cam part 9 Concave part
9A first recess
9B second recess
10 Cam engagement part
11 Engagement bias mechanism
12 Down surface
12A First down surface
12B Second descending surface
12C third down surface
12D fourth down surface
13 Locking recess
14 Operation unit
15 Display section
17 Over-rotation prevention mechanism

Claims (5)

A first member and a second member pivotally mounted to a hinge device which allowed to pivot relative to the first member relative to said second member, rotating the first coupling portion that couples to the first member the shaft portion is provided, wherein the rotation shaft portion to the second coupling portion that couples the second member provided with a bearing portion that engages rotatably, rotated together with the rotation shaft portion to said first connecting portion A cam part having a first convex part, a second convex part or a cam engaging part having a first concave part and a second concave part is provided at a position not on the same circumference, and rotates together with the bearing part and has the same circumference. The cam engaging part or the first convex part having the second concave part and the cam part having the second convex part are provided in the second connecting part at a position not above, and this relative rotation is performed. the cam portion for recess-projection engaging by engagement away at least one of said cam engaging portion along the pivot shaft portion With slidably provided on direction, the cam portion, is provided an engagement biasing mechanism for biasing the engaging direction when moving in the separating direction when at least one of said cam engaging portion is disengaged, the the first member and the second member and the cam portion in one rotational position by relative rotation of said cam engaging portion is biased engagement engaged uneven engagement by the engagement biasing mechanism The engagement is maintained or biased , and either the cam portion or the cam engagement portion is moved in the separation direction against the engagement biasing mechanism. When the first convex portion and the second convex portion are engaged with and disengaged from the first concave portion and the second concave portion by relatively rotating in any one direction, the first convex portion, The first descending surface portion and the second descending surface portion in which the second convex portion slides with the bias of the engagement biasing mechanism are the cam portion or The cam engagement portion is provided at a position not on the same circumference, and either one of the cam portion or the cam engagement portion is moved in the separation direction against the engagement biasing mechanism, either in the left or right direction When the first convex portion and the second convex portion are engaged with and disengaged from the first concave portion and the second concave portion, the first convex portion and the second convex portion Is provided with a third descending surface portion and a fourth descending surface portion that slide with the biasing force of the engagement biasing mechanism at positions not on the same circumference of the cam portion or the cam engaging portion, The second member is configured to generate an automatic rotation bias that relatively rotates the second member to another rotation position different from the one rotation position, and the cam portion and the cam engagement portion are relatively rotated. When the first concave portion, the first convex portion disengaged from the second concave portion, and the second convex portion are simultaneously the first downward surface And a second descending surface portion or the third descending surface portion, and the fourth descending surface portion are slid in a contact state at a plurality of locations .   The hinge device according to claim 1, wherein a rotation range from the one rotation position to another rotation position is set to a rotation range of 180 °. In that the convex portion provided on the cam portion or the cam engagement portion is provided with a locking recess convex portion below the site of downstream face is depression locking to slide in the cam engagement portion or the cam portion The hinge device according to claim 1 , wherein the hinge device is characterized in that The hinge according to any one of claims 1 to 3 , further comprising an over-rotation prevention mechanism that prevents relative over-rotation by the automatic rotation bias of the first member with respect to the second member. apparatus. A main body part provided with an operation part and a superposition part provided with a display part are arranged so as to cover the operation part when the operation part is not operated, and the superposition part is relatively moved from the superposed state. A hinge device that pivotably connects the main body portion and the overlapping portion so that the operation portion can be exposed by horizontal rotation, and the main body portion is connected to the first member in the hinge device. or the said second member, use the hinge apparatus characterized by using a hinge device according to the overlap portion in any one of the claims 1 to 4 and the second member or the first member Was electronic equipment.

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