JP2006220198A - Hinge device as well as electronic equipment using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a unique hinge device having nonconventional operating effects, and to provide electronic equipment using the same. <P>SOLUTION: The hinge device is provided for turnably connecting a first member to a second member. A first recessed portion 8 and a second recessed portion 9 are provided in a cam engaging portion 5, with which a first protruded portion 6 and a second protruded portion 7 provided on a cam portion 4 engage or in the process of engaging, respectively, when the first member 1 and the second member 2 are in closed conditions. A third recessed portion 10 and a fourth recessed portion 11 are provided in the cam engaging portion 5, with which the first protruded portion 6 and the second protruded portion 7 engage or in the process of engaging, respectively, when the first member 1 and the second member 2 are in opened conditions. During turning the cam portion 4 relative to the cam engaging portion 5, a positional relationship is established where one of the first protruded portion 6 and the second protruded portion 7 does not engage with the recessed portion with which the other engages. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hinge device provided in a pivotally attached portion of an electronic device such as a mobile phone and a mobile, and an electronic device using the hinge device.

  For example, a foldable mobile phone is currently the mainstream, and this foldable mobile phone is provided with an operation unit on which the numeric keys and function keys are arranged on the lower side of the main body. A display unit such as a liquid crystal panel, on which a predetermined display is made by the key operation of, is provided on the lower surface side (overlapping side) of the overlapping portion (lid portion) on the upper side, and this main body portion and the overlapping portion are connected via a hinge device From the folded closed state in which the main body part and the superposition part are folded in two and the operation part is concealed by the superposition part, the superposition part is swung up and down by the hinge device, and the operation part and the display part are reversed. It can be switched to the open state where is exposed.

  By the way, in recent years, mobile phones with camera functions are popular as mobile phones are increasingly required to have various functions.

  This mobile phone with a camera function is to shoot while looking at the display unit by directing the camera unit provided on the back side of the main unit or superimposing unit to the subject and projecting the video captured from the camera unit on the display unit Can do.

  However, the folding mobile phone proposed heretofore is easy to talk and the display part is easy to see (operability of the operation part while looking at the display part). The maximum opening angle is configured so that it can only be swung up and down only up to an angle slightly smaller than 180 ° (about 160 to 170 °), but this configuration causes various problems. In addition, the maximum opening position restriction in the undulation rotation of the overlapping portion is excessively set by providing a stopper for preventing the excessive rotation at the rotating portion of the hinge device or by setting the shape of the pivot portion between the main body portion and the overlapping portion. The maximum opening position in the undulation rotation is regulated and determined by preventing the rotation.

  That is, for example, when shooting with the camera unit facing the object opposite to you, the display unit is easy to see and the operation unit is on your side, so you can shoot without any problems. It is only when it is provided on the back side of the overlapping part (the side opposite to the side where the main display part is provided), and the camera part is provided on the back side of the main body part (the side opposite to the side where the operation part is provided) If the camera part is pointed straight at the subject, the display part will be in a state of falling to the near side of the camera, making it difficult to see the camera part. is there.

  Also, if you want to take a picture of yourself, change the entire mobile phone so that the camera part is facing you, but in this case, the maximum opening position of the overlapping part is As described above, the camera unit can be opened only up to about 160 to 170 degrees. Therefore, when the camera unit is directed toward the user, the operation unit is directed in a direction opposite to that of the user. In this case, the angle of the camera part must be adjusted by bending the wrist in an unnatural state, etc., and it is troublesome. There is a problem that cannot be done.

  The present invention solves the above-described problems, and provides a revolutionary hinge device having excellent practicality and an electronic device using the hinge device.

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

  A hinge device that connects the first member 1 and the second member 2 so as to be rotatable, and is provided so as to be relatively rotatable with respect to the rotation shaft portion 3. It has a cam portion 4 that moves, and a cam engagement portion 5 that rotates with the rotation of the second member 2, and a convex portion provided on the cam portion 4 and a concave portion provided on the cam engagement portion 5. In the hinge device configured such that the rotational position is engaged and held by engaging the concave and convex portions, the first convex portion 6 and the second convex portion 7 provided on the cam portion 4 are the first member. 1 and the second member 2 are provided with a first recess 8 and a second recess 9 in the cam engagement portion 5 that are engaged or in the middle of engagement when the first member 6 and the second member 2 are in the closed state. And the second convex portion 7 is engaged with the first concave portion 10 and the fourth concave portion 10 when the first member 1 and the second member 2 are in the open state. A concave portion 11 is provided in the cam engaging portion 5, and the first convex portion 6 and the second convex portion 7 are engaged with each other when the cam portion 4 and the cam engaging portion 5 are relatively rotated. The present invention relates to a hinge device that is configured to have a positional relationship that does not engage with the concave and convex portions.

  Further, the first member 1 and the second member 2 are pivotally connected to each other, and the first member 1 is pivoted relative to each other about the pivot shaft 3. And a cam engagement portion 5 that rotates with the rotation of the second member 2. A convex portion provided on the cam portion 4 and a concave portion provided on the cam engagement portion 5. In the hinge device configured such that the rotation position is engaged and held by engaging with the concave and convex portions, the first convex portion 6 and the second convex portion 7 provided on the cam portion 4 include the first convex portion A first concave portion 8 and a second concave portion 9 that are engaged or in the middle of engagement when the one member 1 and the second member 2 are in the closed state are provided in the cam engaging portion 5, and the first convex portion When the first member 1 and the second member 2 are in the open state, the portion 6 and the second convex portion 7 are engaged with each other, or a third concave portion 10 that is in the middle of engagement. The fourth concave portion 11 is provided in the cam engaging portion 5, the first convex portion 6 and the second convex portion 7 are provided at positions not on the same circumference of the cam portion 4, and the first concave portion 8 and the second concave portion 9 and the third concave portion 10 and the fourth concave portion 11 are provided at positions not on the same circumference of the cam engaging portion 5, and the cam portion 4 and the cam engaging portion 5 are The hinge device is characterized in that, when rotating, the first convex portion 6 and the second convex portion 7 are configured to be in a positional relationship in which the concave and convex portions engaged with each other are not concave and convex. It is related to.

  Further, when the first member 1 and the second member 2 are in the open state in which the first member 1 and the second member 2 are opened and rotated by 180 ° from the closed state, the first convex portion 6 and the second convex portion 7 are respectively connected to the third concave portion 10. The hinge device according to any one of claims 1 and 2, wherein the hinge device is configured to engage with or be engaged with the fourth recess 11.

  Further, a main body portion provided with an operation portion and a superposition portion provided with a display portion are arranged so as to cover the operation portion when the operation portion is not operated. A hinge device that pivotably connects the main body portion and the overlapping portion so that the operation portion can be exposed by rotating the main body portion. A hinge using the hinge device according to any one of claims 1 to 3, wherein the hinge device is the member 2 or the first member 1, and the overlapped portion is the first member 1 or the second member 2. The present invention relates to an electronic device using the apparatus.

  Since the present invention is configured as described above, the first member and the second member are opened as much as possible, as well as providing a good closing action in the closed state in which the first member and the second member are closed. It becomes an innovative hinge device and an electronic device using the hinge device that are extremely excellent in practicality. For example, a favorable opening action can be always obtained in any rotated open state.

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

  In the present invention, when the first member 1 and the second member 2 are in the closed state, the first convex portion 6 and the second convex portion 7 provided on the cam portion 4 are provided on the cam engaging portion 5. The closed state is held while receiving the closing action by engaging with or in the middle of the one recess 8 and the second recess 9, while the first member 1 and the second member 2 are In the open state, the first convex portion 6 and the second convex portion 7 are engaged with or engaged with the third concave portion 10 and the fourth concave portion 11 provided in the cam engaging portion 5. This open state is held while receiving the opening action.

  By the way, it is particularly effective when the hinge device according to the present invention is employed as the hinge device for a mobile phone with a camera function described above.

  That is, for example, a conventionally proposed hinge device is provided with a pair of convex portions on the cam portion 4 provided on the first member 1, and a pair of concave portions engaged with the convex and concave portions with the bias of the biasing mechanism. This is a structure provided in the cam engaging portion 5 provided in the second member 2. With this structure, the first member 1 and the second member 2 are protruded when the open state is rotated 180 ° from the closed state. When the concave portion and the concave portion are to be engaged with the concave and convex portions, the convex portion of the cam portion 4 is completely depressed into the concave portion of the cam engaging portion 5 so that the concave portion and the concave portion are engaged. In the open state, the opening action (open urging force for urging in the opening direction) cannot be exerted, and rotation between the first member 1 and the second member 2 is possible unless the convex portion and the concave portion are manufactured with high accuracy. There will be play in the direction.

  In addition, for example, if one convex portion provided in the cam portion 4 is provided and concave portions where the convex portion engages with the concave and convex portions are provided at two locations of the cam engaging portion 5, the first member 1 and the first member In the open state in which the two members 2 are opened and rotated 180 ° from the closed state, the convex portion and the concave portion can be in the middle of engagement, and it is possible to exert the opening action. 4 and the cam engaging portion 5 are in a single-point support state, and are inclined, and the relative rotation between the cam portion 4 and the cam engaging portion 5 is not smoothly performed.

  In this regard, according to the present invention, the first convex portion 6 and the second convex portion 7 provided on the cam portion 4 are engaged with each other when the first member 1 and the second member 2 are in the closed state. The first concave portion 8 and the second concave portion 9 are provided in the cam engaging portion 5, and the first convex portion 6 and the second convex portion 7 are in the open state of the first member 1 and the second member 2. At this time, the third concave portion 10 and the fourth concave portion 11 which are engaged or in the middle of the engagement are provided in the cam engaging portion 5, and the first convex portion is formed when the cam portion 4 and the cam engaging portion 5 are rotated relative to each other. Since the portion 6 and the second convex portion 7 are configured so as not to be concavely and convexly engaged with concave portions that engage with each other, for example, positions where the convex portions of the cam portion 4 and the concave portions of the cam engaging portion 5 are provided. The position where the convex part and the concave part with the relative rotation between the cam part 4 and the cam engaging part 5 engage with the concave and convex parts (the position in the middle of the engagement) can be varied. When the member 1 and the second member 2 are turned 180 degrees from the closed state, the first convex portion 6 and the second convex portion 7 are provided with the third concave portion 10 and the second concave portion 10 provided in the cam engaging portion 5. The four recesses 11 can be engaged or in the middle of engagement.

  That is, as in the embodiment described later, when the cam portion 4 and the cam engaging portion 5 are relatively rotated by 200 °, the convex portion and the concave portion are completely engaged, and the convex portion is located at the position where the relative rotation is 180 °. If the first member 1 and the second member 2 are rotated by 180 ° when the first member 1 and the second member 2 are rotated by 180 °, the opening is rotated by 180 °. In this state, an opening action (biasing force in the opening direction) is generated, and a good open state without backlash between the first member 1 and the second member 2 is obtained.

  Therefore, in the closed state in which the first member 1 and the second member 2 are closed, a good closing action can be obtained, as well as which of the first member 1 and the second member 2 is opened and rotated to the maximum. Even in the open state (if it is within the 360 ° rotation range), a good opening action can always be obtained at the rotation position, and the relative rotation between the cam portion 4 and the cam engagement portion 5 is two. Since it rotates according to the point support state, it will be tilted and will be very stable and smooth, and when the hinge device according to the present invention is used in the hinge device of a mobile phone with a camera function Since the first member 1 and the second member 2 can be firmly held in an open state in which the first member 1 and the second member 2 are opened and rotated 180 °, for example, the display unit is easy to see and can be photographed in a state where it can be easily photographed. And you can hold it in a comfortable state You will be able to take good pictures without blurring.

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

  In the present embodiment, the present invention is applied to a mobile phone that can be made compact, and is formed on the upper surface side of a plate-like main body 2 (second member 2) in which electronic parts such as a circuit board and a power source are housed in a case. An operation unit 12 that performs a keyboard function in which numeric keys and function keys are arranged is provided, and a substantially overlapping plate-like overlapping part 1 (first member 1) that overlaps the main body part 2 and covers the operation part 12 is undulated. It is configured to be pivotally connected by a hinge device H so as to be movable.

  A display unit 13 such as a liquid crystal panel on which a predetermined display is made by a predetermined screen or an operation or an incoming call of the operation unit 12 is provided on the lower surface side (lower surface) of the overlapping unit 1.

  The connection between the main body 2 and the overlapping portion 1 is such that the overlapping portions of both end portions are arranged in the width direction and the undulating rotation shaft portion 14 is arranged in a direction orthogonal to this. It is connected by a biaxial hinge device H having a portion 15, and as usual, the overlapping portion 1 can be rotated up and down by 180 ° in the front-rear direction, and can rotate and rotate by 180 ° in the left-right direction (reversible). By rotating 180 degrees, the front and back directions of the overlapping portion 1 can be switched, and the bottom surface and the exposed surface of the overlapping portion 1 in the closed state where they are overlapped with each other can be reversed.

  A camera unit (not shown) is provided on the outer surface of the overlapping portion 1 of the overlapping portion 1 of the main body portion 2 so that an image of the camera portion is displayed on the display portion 13 of the overlapping portion 1, and the display portion 13 is inverted. The superimposing unit 1 is superposed on the operation unit 12 so that it can be folded and made compact so that it can be used as a digital camera.

  Next, the hinge apparatus H of a present Example is demonstrated.

  In this embodiment, as described above, the main body portion 2 and the overlapping portion 1 are overlapped with each other, and the pair of left and right undulation rotation shaft portions 14 are opened and rotated to a predetermined angle so that the overlapping surface is exposed. The overlapping portion of the overlapping portion 1 can be rotated up and down so as to be in a state and the overlapping portion 1 that is openly rotated with respect to the main body portion 2 can be freely rotated around one rotation turning shaft portion 15 as an axis. A hinge device H for connecting a surface and an exposed surface so as to be able to be reversed and switched, wherein one attachment portion 16 of an opening / closing rotation hinge portion HA is connected to the main body portion 2, and the one attachment portion 16 and the undulation The other attachment portion 17 that is rotatably connected via the moving shaft portion 14 is connected to the overlapping portion 1 via the rotation rotation hinge portion HB provided with the rotation rotation shaft portion 15, and The rotation rotation hinge portion HB is provided so as to be freely undulated (revolution rotation) by the opening / closing rotation hinge portion HA.

  More specifically, a shaft mounting portion 17 (base portion 17) that serves as a mounting seat base for the rotation rotation shaft portion 15 of the rotation rotation hinge portion HB is formed in a U-shape, and the opposing leg portion 17A of the base portion 17 is formed. One is provided with a shaft support hole (not shown) through which one undulation rotation shaft portion 14 is inserted, and the other is provided with a connecting portion 17C for connecting another undulation rotation shaft portion 14 to the upper piece portion ( A shaft hole (not shown) through which the rotation shaft 15 is inserted is provided in the installation part 17B).

  First, the opening / closing rotation hinge portion HA will be described. A mounting portion 16 (base portion 16) that serves as a mounting seat base for the undulating rotation shaft portion 14 is formed in a U shape, and one of the opposing leg portions 16A of the base portion 16 is formed. The cylindrical case 18 is disposed on the side of the one opposing leg portion 16A of the base portion 16, and is fixed to the one opposing leg portion 17A of the base portion 17 in a non-rotating state. In this cylindrical case 18, a biasing mechanism 19 (spring) is fitted in the cylindrical case 18 so that the cam portion 4 is fitted to the rotary shaft portion 3 with the rotary shaft portion 3 as an axis. The cam engagement portion 5 is slidably mounted against the force and is rotatable relative to the cam portion 4. The cam engagement portion 5 is provided with a concave portion engaged with the convex portion provided on the cam portion 4. It is fixed to the side of one opposing leg portion 16A in a non-rotating state (the cam engaging portion 5 may be built in the cylindrical case 18 or the cam 4 and may be furnished to 5 both cam engaging portion in the cylindrical case 18.). That is, in the present embodiment, the cam portion 4 that is fitted and rotated on the rotation shaft portion 3 is slidably housed in the cylindrical case 18, and the other cam engagement portion 5 is provided on the rotation shaft portion. The cam engaging member 5A is arranged in a non-rotating state on one opposing leg portion 16A of the base portion 16 that rotates relative to the base portion 16 to form the cam engaging portion 5.

  Accordingly, the cam portion 4 and the cam engaging portion 5 are positioned (cam-locked) with the bias of the spring 19 (with the bias of the biasing mechanism) at the predetermined undulation rotation position, for example, the main body When the portion 2 and the overlapping portion 1 are in the closed state, they are in the middle of the cam engagement and exhibit a closing action (blocking bias), and in the open state, they are in the middle of the cam engagement and exhibit an opening action (open bias). Further, during the up-and-down rotation (while the pair of convex portions of the cam portion 4 slide in a two-point support state on the flat surface 5b between the concave portions of the cam engaging portion 5), the rotational resistance is caused by the spring bias. It is configured so that a free stop can be realized in which the pivot position where the hand is released is held.

  Reference numeral 21 denotes a fixing screw for fixing the cylindrical case 18 to the opposing leg portion 16A of the base portion 16, and 22 denotes the opposing leg portion 16A of the base portion 16, the cam engaging portion 5, the cam portion 4, the spring 19, and When the end portion of the rotating shaft portion 3 penetrating the cylindrical case 18 is caulked, it is a retaining member for retaining the rotating shaft portion 3 by being locked to the caulking portion.

  In the present embodiment, the cam portion 4 is provided with two convex portions, and the four concave portions in which the pair of convex portions are engaged with the concave and convex portions are provided in the cam engaging portion 5. In addition, the concave-convex engagement referred to in this specification has a broad meaning including both complete engagement and mid-engagement.

  Specifically, the first convex portion 6 and the second convex portion 7 projecting from the end face of the cam portion 4 are engaged with each other when the overlapping portion 1 and the main body portion 2 are in the closed state. When the concave portion 8 and the second concave portion 9 are provided in the end face of the cam engaging portion 5 and the first convex portion 6 and the second convex portion 7 are in the open state of the overlapping portion 1 and the main body portion 2. A third recessed portion 10 and a fourth recessed portion 11 that are in the middle of engagement are formed in the end surface of the cam engaging portion 5, and when the cam portion 4 and the cam engaging portion 5 are rotated relative to each other, The convex portion 6 and the second convex portion 7 do not engage with the concave and convex portions (the first concave portion 8 and the second concave portion 9, the third concave portion 10 and the fourth concave portion 11) that are engaged with each other. It is configured as follows.

  That is, as shown in FIGS. 6 and 7, the first cam portion 4 and the cam engagement portion 5 arranged in abutting state with the rotation shaft portion 3 as an axis are provided on the butting surface of the cam portion 4. The convex portion 6 and the second convex portion 7 are provided at the inner and outer positions that are not on the same circumference as opposed positions with bearing holes 4a provided in the cam portion 4 penetrating the rotating shaft portion 3 therebetween. The first convex portion 6 and the second convex portion 7 provided in the cam portion 4 are engaged with the concave and convex portions, and a bearing hole 5a provided in the cam engaging portion 5 penetrating the rotating shaft portion 3 is provided therebetween. The first concave portion 8 and the second concave portion 9 are provided on the abutting surface of the cam engaging portion 5 at the inner and outer positions that are not on the same circumference as the opposed positions, and the cam portion 4 and the cam engaging portion 5 are rotated relative to each other. The third concave portion 10 in which the first convex portion 6 and the second convex portion 7 which are moved and engaged with and disengaged from the first concave portion 8 and the second concave portion 9 are depressed and engaged with each other. And the fourth recess 11 is provided at the inner and outer positions that are not on the same circumference of the butting surface of the cam engagement portion 5 with the bearing holes 5a provided in the cam engagement portion 5 being opposed to each other. The straight line connecting the centers of the first concave portion 8 and the second concave portion 9 and the straight line connecting the centers of the third concave portion 10 and the fourth concave portion 11 do not coincide with each other so as to intersect with each other. It is configured.

  Therefore, when the cam portion 4 and the cam engaging portion 5 are relatively rotated, the first convex portion 6 and the second convex portion 7 have a positional relationship in which the concave and convex portions are not engaged with the concave portions that are engaged with each other. Become.

  Further, in the present embodiment, when the overlapping portion 1 and the main body portion 2 are opened and rotated 180 ° from the closed state, each of the first convex portion 6 and the second convex portion 7 has a third concave portion. 10 and the fourth recess 11 are in the middle of engagement.

  Specifically, in this embodiment, when the cam portion 4 and the cam engaging portion 5 are relatively rotated, the first concave portion 8 and the second concave portion 9 are completely lowered and engaged with the concave and convex portions. After the first convex portion 6 and the second convex portion 7 are disengaged from the first concave portion 8 and the second concave portion 9 and relatively rotated by 200 °, the first convex portion 6 and the second convex portion 7 are The first convex portion 6, the second convex portion 7, the first concave portion 8, the second concave portion 9, the third concave portion 10, and the third concave portion 10 and the fourth concave portion 11 are completely depressed and engaged with the concave and convex portions. The arrangement and size of each of the concave portion 10 and the fourth concave portion 11 are appropriately set.

  Therefore, as shown in FIG. 7, when the cam portion 4 and the cam engagement portion 5 are rotated relative to each other by 200 °, the convex portion and the concave portion are completely engaged with each other, and within this relative rotation range of 200 °. If the convex portion and the concave portion are configured to be engaged at a position rotated by 180 °, the overlapping portion 1 and the main body portion 2 are closed in the closed state (biasing force in the closing direction). And, if the rotation is restricted when the overlapping portion 1 and the main body 2 are rotated 180 degrees from the closed state, the opening action (the urging force in the opening direction) is performed in the opened state that is relatively rotated 180 degrees. ) Will occur, and a good open state without backlash between the overlapping portion 1 and the main body portion 2 will be obtained (see FIGS. 9 to 11).

  It should be noted that the arrangement and size of each of the first convex portion 6, the second convex portion 7, the first concave portion 8, the second concave portion 9, the third concave portion 10, and the fourth concave portion 11 can be appropriately changed. By doing so, the angle (for example, 300 degrees etc.) at which the convex part of the cam part 4 and the concave part of the cam engaging part 5 engage with each other can be freely set.

  Further, in this embodiment, the overlapping portion 1 is connected to the base portion 17 that swings up and down with respect to the main body portion 2 (the rotation shaft portion 3) via the rotation rotation hinge portion HB so as to be freely rotatable. Yes.

  The rotation rotation hinge portion HB provided with the rotation rotation shaft portion 15 is an attachment portion provided at one end (upper end) in the shaft hole of the upper piece portion (erection portion 17B) of the base portion 17 (shaft attachment portion 17). The other end (lower end) of the rotation rotation shaft portion 15 connected to the overlapping portion 1 through 20 is rotatably inserted, and a cam portion (not shown) that is prevented from rotating by the rotation rotation shaft portion 15 is inserted. In addition, in this embodiment, a cam engagement portion (not shown) that is cam-engaged with the cam portion is provided on the upper piece portion (the erection portion 17B) of the base portion 17 so as to be uneven, and the cam portion is provided with a rotation rotation shaft portion It is configured to be slidable along 15 and to be engaged and biased by a spring (not shown).

  Accordingly, the overlapping portion 1 rotates and rotates about the rotation and rotation shaft portion 15 and is cam-locked in a non-twisting rotation direction that can be overlapped by the cam engagement between the cam portion and the cam engagement portion. It is composed.

  Also, when rotating 180 degrees from a direction without twisting, the cam part separates from the cam engaging part against the spring and rotates relative to it, and opens and closes at the 0 and 180 degree reversal positions. In the same way as the moving hinge part HA, the cams are locked by engaging with each other in a concave-convex manner, and a free stop is realized by a spring bias in the middle of the rotation, so that it can be closed and rotated at 0 degrees without twisting, It is positioned at the 180 degree rotation position and is configured not to swing and rotate.

  Further, in this embodiment, it is rotated with the cam portion or the cam portion (rotating rotation shaft portion) so that it does not rotate more than about 180 degrees so that the wiring is not hindered and can be rotated at the forward and reverse times in this range. The stopper member 23 is provided so as to abut against each other and the cam engaging portion or the member integrated therewith.

  Since the present embodiment is configured as described above, the first convex portion 6 and the second convex portion 7 provided on the cam portion 4 are cam-engaged when the overlapping portion 1 and the main body portion 2 are closed. The closed state is maintained while receiving the closing action by being engaged with the first recessed portion 8 and the second recessed portion 9 provided in the portion 5, while the overlapping portion with respect to the main body portion 2 is held. In the open state in which 1 is rotated 180 °, the first convex portion 6 and the second convex portion 7 are engaged with the third concave portion 10 and the fourth concave portion 11 provided in the cam engaging portion 5. By being in the middle, this open state is held while receiving the opening action.

  Therefore, according to the present embodiment, when the hinge device H having the above-described configuration is adopted in a hinge device of a mobile phone with a camera function, the overlapping portion 1 and the main body portion 2 are opened by rotating 180 °. Since the state can be firmly held, for example, the display unit can be easily seen and photographed in a state where it can be easily photographed, and since it can be held firmly in an easy state, good shooting without blurring Can be done.

  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 use condition explanatory drawing of a present Example. It is a perspective view explaining a present Example. It is a disassembled perspective view which shows a present Example. It is explanatory sectional drawing of the principal part which concerns on a present Example. It is explanatory sectional drawing of the principal part which concerns on a present Example. It is explanatory drawing of the principal part which concerns on a present Example. It is explanatory drawing of the principal part which concerns on a present Example. It is schematic operation explanatory drawing of a present Example. It is a description perspective view of the principal part concerning a present Example. It is a description perspective view of the principal part concerning a present Example. It is a description perspective view of the principal part concerning a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st member 2 2nd member 3 Rotating shaft part 4 Cam part 5 Cam engaging part 6 1st convex part 7 2nd convex part 8 1st recessed part 9 2nd recessed part
10 Third recess
11 Fourth recess

Claims (4)

  A hinge device that rotatably connects a first member and a second member, wherein the cam portion rotates with the rotation of the first member. And a cam engaging portion that rotates together with the rotation of the second member, and the convex portion provided on the cam portion and the concave portion provided on the cam engaging portion engage with each other to make the rotation. In the hinge device configured such that the position is engaged and held, the first convex portion and the second convex portion provided on the cam portion are engaged when the first member and the second member are in the closed state. A first recess and a second recess that are in the middle of engagement or engagement are provided in the cam engaging portion, and the first and second protrusions are formed by the first member and the second member. A third recess and a fourth recess, which are engaged or in the middle of engagement in the opened state, are provided in the cam engaging portion, In the relative rotation with the engaging portion, the first convex portion and the second convex portion are configured to be in a positional relationship in which the concave and convex portions are not engaged with the concave portions that are engaged with each other. The hinge device.   A hinge device that pivotably connects a first member and a second member, and is a cam portion that rotates relative to each other about the rotation shaft portion, and that rotates relative to each other about the rotation shaft portion. And a cam engaging portion that rotates together with the rotation of the second member, and the convex portion provided on the cam portion and the concave portion provided on the cam engaging portion engage with each other to make the rotation. In the hinge device configured such that the position is engaged and held, the first convex portion and the second convex portion provided on the cam portion are engaged when the first member and the second member are in the closed state. A first recess and a second recess that are in the middle of engagement or engagement are provided in the cam engaging portion, and the first and second protrusions are formed by the first member and the second member. A third recess and a fourth recess that are engaged or in the middle of engagement in the opened state are provided in the cam engagement portion, and the first protrusion The second convex portion is provided at a position not on the same circumference of the cam portion, and the first concave portion, the second concave portion, the third concave portion, and the fourth concave portion are arranged on the same circumference of the cam engaging portion. Provided at a position not above, and when the cam portion and the cam engaging portion are relatively rotated, the first convex portion and the second convex portion do not engage with the concave portion where the other concave and convex portions engage with each other. A hinge device characterized by being configured to be in a relationship.   When the first member and the second member are in an open state in which the first member and the second member are rotated 180 degrees from the closed state, the first convex portion and the second convex portion are engaged with the third concave portion and the fourth concave portion, respectively. The hinge device according to any one of claims 1 and 2, wherein the hinge device is configured to be engaged or engaged. 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 body portion and the overlapping portion so that the operation portion can be exposed by rotating, and the hinge device includes the second member or An electronic apparatus using a hinge device, wherein the hinge device according to any one of claims 1 to 3 is used, wherein the hinge device is the first member and the overlapping portion is the first member or the second member. .

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