JP5076703B2 - Hinge device and image display device - Google Patents

Description

  The present invention relates to a hinge device and an image display device, and more particularly to a hinge structure for opening and closing an image display panel for displaying an image.

  2. Description of the Related Art An image display device including a thin image display panel such as a liquid crystal display element is known. Specifically, there are a video camera, a digital still camera, a mobile phone, a notebook personal computer, a portable DVD (Digital Versatile Disc) player, and the like.

Many of such image display apparatuses include an apparatus main body and an image display panel, and further include a hinge device that connects the image display panel to the main body so as to be freely opened and closed.
Normally, the hinge device is held in a closed state in which the image display panel is in close contact with the main body when the device is not used, and can be held in an open state, for example, about 90 ° with respect to the main body when the device is used. It is configured.

When the image display device is a portable DVD player or a notebook computer, the hinge device can be opened and closed between the closed state and the open state, that is, it can be rotated about one axis. The mobile phone or the like is configured to be capable of rotating corresponding to so-called swinging in the open state.
That is, the hinge device is configured to be able to rotate the image display panel around first and second axes orthogonal to each other, and examples thereof are disclosed in the following patent documents.

In Patent Document 1, as shown in FIG. 2, a pair of substantially U-shaped members are connected to each other by a connecting portion provided on each arm so as to freely rotate around the first rotation axis. The U-shaped member is connected to a rotation shaft member that can rotate around a second rotation axis that is orthogonal to the first rotation axis, and is provided around each of the first rotation axis and the second rotation axis. A hinge device that is pivotable is disclosed.
This hinge device is configured without using an axial core member extending in the axial direction.

  In Patent Document 2, as shown in FIG. 1, at the center of an opening / closing shaft 3 (corresponding to a first rotating shaft in Patent Document 1) supported at both ends by brackets, a rotation perpendicular to this shaft is performed. There is disclosed a hinge device in which a moving shaft 5 (corresponding to a second rotating shaft in Patent Document 1) is rotatably combined to be rotatable around an opening / closing shaft and a rotating shaft.

In the image display apparatus, the first rotation axis in the hinge device described in each of the above-mentioned patent documents is normally set as a rotation axis for opening and closing the image display panel.
Therefore, the rotation around the first rotation axis not only enables the image display panel to be simply opened and closed, but also holds the image display panel at an arbitrary angular position and is used during the rotation. It is required that the user can feel a moderate and comfortable feeling of friction and can obtain a click feeling at a specific angular position.

An example of a hinge mechanism for realizing this is described in Patent Document 3.
The hinge mechanism described in Patent Document 3 includes a shaft extending on a first rotation shaft, a second cam that is not interlocked with the second cam that is interlocked with the rotation of the shaft, and both A spring that biases one side so that the cam surface abuts is extrapolated.
According to this configuration, rotational resistance is obtained by the bias of the spring, the image display panel is held at an arbitrary angular position, and a click feeling is obtained at a specific angular position corresponding to the cam shape.
JP 2001-272719 A JP 2000-240636 A Japanese Patent Laid-Open No. 10-311327

By the way, the image display apparatus on which the hinge device as described above is mounted has been reduced in size and weight with the spread of portable use.
Accordingly, the hinge device itself is also reduced in size, and the member used is reduced in thickness for weight reduction, and the strength and rigidity tend to decrease.
Usually, the image display panel of the image display device has a predetermined rotation angle range in which the image display panel can be rotated, and the hinge device is provided with a stopper structure to prohibit further rotation. The strength of this stopper structure also tends to decrease.

However, since the turning force (hand force) that the user tries to apply to the image display panel to make the image display panel the desired posture does not change, when the image display panel is rotated, There is a high possibility that the hinge device is damaged due to the force exceeding the reduced strength.
In particular, in the rotation around the first rotation axis described above, that is, in the opening and closing of the image display panel, when the image display panel is open, the panel easily hits a wall, a desk, etc. On the other hand, there is a high possibility that the hinge device is damaged due to an unintentional excessive force.
Thus, it is desired that the hinge device can maintain a high rotation restricting strength even if the hinge device is downsized.

  On the other hand, the hinge device described in Patent Document 1 is provided on the arm portion of the U-shaped member in order to hold the image display panel at an arbitrary angular position or to obtain a click feeling at a specific angular position. The connecting portion is provided with a thin annular friction spring and a small hole that engages with this to provide a click feeling.

However, the friction spring has an annular shape, and a stroke in the direction of the rotational axis cannot be obtained sufficiently in its elastic deformation. Therefore, there are problems that the frictional force varies and it is difficult to obtain a high-quality friction feeling.
In addition, there is a problem that it is difficult to exert a click feeling with a delicate friction feeling, and it is difficult to obtain a high-quality rotation operation.

  Also in the hinge device described in Patent Document 2, the image display panel is held at an arbitrary angular position or clicked at a specific angular position on the opening / closing axis support portions that are provided at both ends of the opening / closing axis and support the shaft. A wave spring for obtaining a feeling is provided, or an opening / closing click plate having a spherical recess that engages with a spherical protrusion formed on the wave spring.

However, since the wave spring is a thin ring, the elastic deformation region is narrow, and it is difficult to obtain a sufficient stroke in the direction of the rotation axis. Therefore, it is difficult to obtain a high-quality feeling of friction because the frictional force varies. There was a problem.
In addition, there is a problem that it is difficult to exert a click feeling with a delicate friction feeling, and it is difficult to obtain a high-quality rotation operation.

In addition, the hinge mechanism described in Patent Document 3 can freely set the cam surfaces in the rotation axis direction, and the spring for biasing the cam surfaces also increases the stroke of elastic deformation in the rotation axis direction. Can be set.
Accordingly, although the frictional force is stable and a high-quality friction feeling can be exhibited, the shaft further extends on the rotating shaft, and further includes first and second cams and springs inserted through the shaft. Since each cam has a large outer diameter, if a mechanism that rotates around the second rotation axis orthogonal to the first rotation axis is provided on the cam, the hinge device is further increased in size. There was a problem.

Therefore, the problem to be solved by the present invention is that the member to be rotated can be stably held at an arbitrary angular position, and a high-quality friction feel can be obtained in the rotation operation. It is an object of the present invention to provide a hinge device that can provide a high-quality click feeling at a specific angular position and can be miniaturized.
In addition, the image display panel can be stably held at an arbitrary angular position, and a high-quality friction feel can be obtained in the rotation operation, and a high-quality click feeling can be obtained at a specific angular position in the rotation operation. An object of the present invention is to provide an image display device which can be obtained and can be miniaturized.

In order to solve the above problems, the present invention has the following means 1) to 7).
1) In the hinge device (50) configured to support the rotating body (50B) so as to be relatively rotatable about one rotation axis (X) with respect to the fixed body (50A),
The rotating body (50B)
The base portion (2b) extending along the one rotation axis (X), and extending once from both ends of the base portion (2b) in a direction perpendicular to the one rotation axis (X). A base frame (2) having first and second side portions (2cA, 2cB) provided with a through hole (2c1) having a dynamic axis (X) as a central axis;
A first cam surface (5M) at one end and a hole with a bottom on the first cam surface side are provided, and the one pivot shaft (X) with respect to the base portion (2b) is provided by the base portion (2b). ) A first cam body (5) supported so as to be unable to rotate around and to be movable in the direction of the one rotation axis (X);
Arranged between the first cam body (5) and the second side part (2cB), the first cam body (5) is attached to the first side part (2cA). An urging body (12) for energizing,
The fixed body (50A)
The first and second side portions (2cA, 2cB) are inserted through the through holes (2c1), respectively, and the base frame (2) is rotatably supported around the one rotation axis (X). And a second shaft (7, 8);
A second cam surface (6M) is provided at one end, and the first shaft (7) is provided between the first cam body (5) and the first side (2cA) by the first shaft (7). A second cam body (6) supported so as not to be able to rotate about the one rotation axis (X) with respect to one shaft (7),
The tip of the first side (2) side of the first shaft (7) is inserted into the bottomed hole of the first cam body (5), and the biasing body (12) is biased. The hinge device (50) is characterized in that the first cam surface (5M) and the second cam surface (6M) are pressed against each other.
2) The distance (Ls) between the tips of the first and second shafts (7, 8) is the length (Lc) of the first cam body (5) in the one-turn axis (X) direction. The hinge device (50) according to 1), characterized in that it is longer.
3) The base portion (2b) of the base frame (2) has a through hole (2b1) whose center axis is another rotation axis (Y) orthogonal to a plane including the one rotation axis (X). Have
A third shaft (9) inserted from the outside into the through hole (2b1);
The third shaft (9) that is inserted is fixed to the tip of the third shaft (9), the base portion (2b) is sandwiched between the third shaft (9) and the other rotation with respect to the base frame (2). A shaft fixing part (11) rotating around an axis (Y);
A recess (5g) provided on a side portion of the first cam body (5),
The hinge device (50) according to 1) or 2), wherein the shaft fixing portion (11) is configured to enter the concave portion (5g).
4) A main body (151), an image display (152) for displaying an image, and a hinge device that opens and closes the image display (152) by rotating about at least one axis with respect to the main body (152). And comprising
The hinge device is the hinge device (50) according to 1) or 2),
The fixed body (50A) is connected to the main body (151) side, and the rotating body (50B) is an image display device (150) connected to the image display section (152) side.
5) A main body (151), an image display (152) for displaying an image, and a hinge device that opens and closes the image display (152) with respect to the main body (151) by rotating about at least one axis. And comprising
The hinge device is the hinge device (50) according to 3),
The fixed body (50A) is connected to the main body (151) side, and the third shaft (9) is an image display device (150) connected to the image display part (152) side.
6) The rotating body (50B) rotates between a first angular position (K1) and a second angular position (K2) that form an angle of at least 90 ° around the one rotation axis (X). Movement is allowed,
The rotating body (50B) and the fixed body (50A) include the image display section (152) and the main body section (151) when the rotating body (50B) is at the first angular position (K1). ) Is connected to the image display unit (152) and the main body unit (151) so as to face each other in close proximity to each other, and the image display device (150) according to 4) It is.
7) The rotating body (50B) rotates between a first angular position (K1) and a second angular position (K2) that form an angle of at least 90 ° around the one rotation axis (X). Movement is allowed,
The rotating body (50B) and the fixed body (50A) include the image display section (152) and the main body section (151) when the rotating body (50B) is at the first angular position (K1). ) Are connected to the image display unit (152) and the main body unit (151) so that the outer surface (151G) of the
The other rotation axis (Y) is parallel to the outer surface (151G) that the image display unit (152) is in close proximity to when the rotating body (50B) is at the first angular position (K1). This is an image display device (150) according to 5).

According to the present invention, it is possible to provide a hinge device that can obtain a high-quality friction feel by a turning operation, can obtain a high-quality click feeling at a specific angular position in the turning operation, and can be miniaturized.
In addition, the image display panel can be stably held at an arbitrary angular position, and a high-quality friction feel can be obtained in the rotation operation, and a high-quality click feeling can be obtained at a specific angular position in the rotation operation. An effect is obtained that an image display device that can be obtained and can be reduced in size can be provided.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to FIGS.
FIG. 1 is an external view showing an embodiment of an image display device of the present invention.
FIG. 2 is an external view for explaining the rotation form of the image display panel in the embodiment of the image display apparatus of the present invention.
FIG. 3 is an external view showing an embodiment of the hinge device of the present invention.
FIG. 4 is a view for explaining a structure for attaching an embodiment of the hinge device of the present invention to an image display device.
FIG. 5 is an exploded view for explaining an embodiment of the hinge device of the present invention.
FIG. 6 is a perspective view for explaining a first main part in the embodiment of the hinge device of the present invention.
FIG. 7 is a perspective view for explaining a second main part in the embodiment of the hinge device of the present invention.
FIG. 8 is a first perspective view for explaining a third main part in the embodiment of the hinge device of the present invention.
FIG. 9 is a second perspective view for explaining a third main part in the embodiment of the hinge device of the present invention.
FIG. 10 is a third perspective view for explaining a third main part in the embodiment of the hinge device of the present invention.
FIG. 11 is a perspective view for explaining a fourth main part in the embodiment of the hinge device of the present invention.
FIG. 12 is a plan view showing an embodiment of the hinge device of the present invention.
FIG. 13 is a perspective view for explaining a rotation operation in the embodiment of the hinge device of the present invention.
FIG. 14 is a perspective view for explaining an embodiment of the hinge device of the present invention.

  Hereinafter, a video camera 150 will be described as an embodiment of the image display apparatus of the present invention.

As shown in FIG. 1, the video camera 150 includes a main body 151, an image display panel 152, and a hinge device that is an embodiment of the hinge device of the present invention that opens and closes the image display panel 152 relative to the main body 151. 50.
FIG. 1 shows an open state (second angular position K2) in which the image display panel 152 is opened by approximately 90 ° with respect to the main body 151.

  A connecting portion between the main body 151 and the image display panel 152 is covered with a hinge cover 51 in appearance, and the hinge device 50 is housed inside the hinge cover 51.

A lens unit 80 is provided on the front side of the main body 151 of the video camera 150.
Further, inside the main body 151, an image sensor 81 that converts an image of a subject obtained through the lens unit 80 into an electric signal, and a signal processing circuit 82 that processes the electric signal from the image sensor 81. A recording / reproducing unit 83 that records the image signal output from the signal processing circuit 82 on a recording medium and reproduces the recorded image signal is provided.

Here, the image includes a still image and a moving image.
As the recording medium, a magnetic tape, an optical disk, a magneto-optical disk, a solid memory, or the like is used.
This recording medium may be built in the video camera 150 or detachable. Further, the recording medium may be arranged outside, and the video camera 150 may be provided with an external communication unit, and a signal may be exchanged with the external recording medium via the communication unit.
An image of the subject, a reproduced image from the recording / reproducing unit 83, an operation image for operation, or the like is displayed on the image display unit 84 provided on the image display panel 152.

  In the video camera 150, the image display panel 152 can take a pivotal form mainly as shown in FIGS. 2A to 2D by the hinge device 50.

First, a position where the image display panel 152 is placed on the side surface of the outer surface 151G of the main body 151 with the image display unit 84 inside is defined as a basic position (first angular position K1).
At this basic position (first angular position K1), the image display panel 152 (image display unit 84) is opposed to and close to the outer surface 151G.
Then, as shown in FIG. 2A, a first rotation position rotated from the basic position around the X axis perpendicular to the plane including the optical axis CL (see arrow A) (hereinafter, referred to as “the first rotation position”). The X axis is also referred to as a first rotation axis) (this position is also referred to as a second angular position K2 with respect to the first angular position K1).

  The following is a second rotation position rotated from the first rotation position by 180 ° (see arrow B) around the Y axis orthogonal to the X axis (hereinafter, the Y axis is the second rotation). Also called an axis). This position is shown in FIG. 2 (c), and the form of the intermediate position between the first rotation position and the second rotation position is shown in FIG. 2 (b).

Further, when the second rotation position is rotated around the X axis (see arrow AA), the third rotation position as shown in FIG. 2D is obtained.
In the third rotation position shown in FIG. 2D, the display surface of the image display unit 84 faces outward, but the image display panel 152 is opposed to the outer surface 151G of the main body 151. , And can be regarded as one form of the first angular position K1.
Further, at the first angular position K1, the second rotation axis Y is set to be parallel to the outer surface (side surface in FIG. 2) 151G of the main body 151.

  The first rotation position is set when the user visually recognizes the screen (image display unit) 84 in normal shooting, and the second rotation position is set in the screen 84 by the user who is the subject in self shooting. The third rotation position is a form that is preferably used when the playback image is mainly viewed.

As described above, the hinge device 50 according to the embodiment enables independent rotation around two rotation axes of the X axis and the Y axis orthogonal to the plane orthogonal to the X axis.
The Y axis is not limited to the axis intersecting with the X axis, and may be an axis orthogonal to a plane including the X axis.
The rotation angle around the X axis from the basic position to the first rotation position is defined as 90 °, for example, and the rotation around the Y axis from the first rotation position to the second rotation position. The angle is defined by, for example, 180 °, but is not limited to this.
In general, as an image display device, it is practical that the image display unit rises 90 ° or more with respect to the main body, and therefore, the rotation angle around the X axis is preferably at least 90 ° or more.

The hinge device 50 is configured as an assembly unit shown in FIG. 3, and is attached to the image display device 150 as shown in FIG.
4 shows a basic position in which the image display panel 152 is closed from the first rotation position shown in FIG. 2A for easy understanding of the exterior panel and the main body 151 of the image display panel 152. It is the figure which mainly showed the member which removed the exterior panel and was directly couple | bonded with the hinge apparatus.

First, an outline of the hinge device 50 will be described with reference to FIG.
In the hinge device 50, the first and second brackets 1A and 1B arranged on the X axis are fixed to the first mating member to which the device is fixed.
Further, the first and second brackets 1A and 1B support a base frame 2 having a pair of bent portions and having a substantially U-shape so as to be rotatable around the X axis.
FIG. 3 shows the first angular position K1 and the second angular position K2 described above applied to the hinge device 50, and FIG. 3 shows a mode at the first angular position K1. . Further, the angle range θ between both the positions K1 and K2 is, for example, 90 ° or more.

A third stud 9 fixed to the subframe 3 is supported at the center of the base frame 2 so as to be rotatable around a Y axis that is coaxial with the axis.
The base frame 2 is rotatable with respect to the first and second brackets 1A and 1B within a predetermined angle range around the X axis, and further exhibits a predetermined frictional force in rotation and has a specific force. It has a cam mechanism M1 that produces a click feeling at an angle.

Further, the sub frame 3 is rotatable with respect to the base frame 2 within a predetermined angle range around the Y axis, and further exhibits a predetermined frictional force in rotation and has a click feeling at a specific angle. It has a rotation restricting mechanism M2 for taking out.
Details of the cam mechanism M1 and the rotation restricting mechanism M2 will be described later.

  On the other hand, in FIG. 4, in the hinge device 50, the first bracket 1 </ b> A is fixed to the first chassis 151 a of the main body 151 with screws (not shown), and the second bracket 1 </ b> B is the second of the main body 151. It is fixed to the chassis 151b with screws (not shown) and integrated with the main body 151.

The sub-frame 3 is engaged with an engagement portion 152a2 formed of a rib 152a1 provided on the frame 152a of the image display panel 152 without looseness, and is fixed to the rib 152a1 by screws (not shown) to display an image. It is integrated with the panel 152.
FIG. 4 shows a state in which the exterior panel of the image display panel 152 is removed as described above, and the liquid crystal which is the image display unit 84 housed in the image display panel 152 is placed in the frame 152a. Illumination device 152b included in the display element is shown. Further, the hinge device 50 is in the state of the first angular position K1.

  With the structure described above, the hinge device 50 according to the embodiment is attached to the image display device 150, and can open and close the image display panel 152 with respect to the main body 151.

  Next, the detail of the hinge apparatus 50 of an Example is demonstrated using FIG. 3, FIG. First, each constituent member including the first and second brackets 1A and 1B will be described.

  Since the first and second brackets 1A and 1B have substantially plane-symmetric shapes, here, as a representative, the second bracket 1B will be described with reference to FIG. In FIG. 6, the reference numerals of the first bracket 1 </ b> A having a substantially symmetrical shape are shown in parentheses for convenience.

  The bracket 1B is formed by pressing and bending a metal plate. Examples of the metal that can be used include a stainless steel material having a thickness of 0.8 mm and an SPCC material. In the case of an SPCC material, the surface may be subjected to nitriding for modification.

In FIG. 6, the bracket 1B further includes a substantially rectangular bottom surface portion 1Ba, two side surface portions 1Bb and 1Bc bent at 90 ° from two adjacent sides of the bottom surface portion 1Ba, and one side surface portion 1Bc. The overlapping side surface portion 1Bd is bent so as to overlap the outer surface of the other side surface portion 1Bb.
The bottom surface portion 1Ba is provided with a hole 1Ba1 for screwing to another member, for example, the above-described second chassis 151b.

The other side surface portion 1Bb and the overlapping side surface portion 1Bd are formed with through-holes 1Be and 1Bf that are coaxial with both sides D-cut.
The through-holes 1Be and 1Bf are formed so that the through-hole 1Bf of the overlapping side surface portion 1Bd is larger in diameter (including the D-cut portion) and has a contact surface 1Bg on the surface of the other side surface portion 1Bb. .
Each of the through holes 1Be and 1Bf does not necessarily have to be coaxial or similar in shape, and may have a portion that overlaps each other to form a through opening, and any stud 7 or 8 that will be described later can be inserted therethrough. In FIG. 6, the through hole 1Be is a through opening.
In addition, the superimposed side surface portion 1Bd and the other side surface portion 1Bb are formed in an arc shape (EK portion) on the opposite side to the bottom surface portion 1Ba.
The overlapping side surface portion 1Bd has a base overlapping side surface portion 1Bdk in which the through hole 1Bf is opened and a connecting portion 1Bh including a bent portion MG1 that is a bent portion from the side surface portion 1Bc, and is formed integrally with the side surface portion 1Bc. Has been.
The width H of the connecting portion 1Bh is set to 2 mm, for example.

When this bracket 1B is formed, first, through the blanks and the piercing process and the bending process, the through holes are formed and the bending portions MG1 are bent at the same time, and then the bending portion MG2 is bent. Processing.
In this bending process, the other side surface portion 1Bb and the overlapping side surface portion 1Bd may not be completely adhered to each other, but can be adhered by a caulking process of the first stud 7 described later.
In FIG. 6, the overlapping side surface portion 1 </ b> Bd is superimposed on the front side, and the other side surface portion 1 </ b> Bb is on the back side, but the reverse is also possible.
In the opposite case, both sides are overlapped with the overlapping side surface portion 1Bd on the back side and the other side surface portion 1Bb on the near side, but each through-hole is formed so that the contact surface 1Bg is formed on the overlapping side surface portion 1Bd. 1Be, 1Bf shape, etc. are set

  The first bracket 1A is also formed in the same manner, and in the following description and drawings, the reference numeral 1B is replaced with 1A.

Next, the base frame 2 will be described with reference to FIG.
The base frame 2 is formed by pressing and bending a metal plate. Examples of the metal that can be used include a stainless steel material having a thickness of 0.8 mm and an SPCC material.
In the case of the SPCC material, the surface may be nitrided for modification.

  In FIG. 7, the base frame 2 is bent at 90 ° toward the inner side from both end surface edges of the long side surface, a bottom surface portion 2 a having a substantially rectangular shape, a long side surface portion 2 b bent at 90 ° from the long side edge thereof. Short side surface portions 2c and 2c (first and second short side surface portions 2cA and 2cB, respectively).

  A through-hole 2c1 having a common axis X (hereinafter also referred to as X axis) is formed in the short side surface portion 2c.

  In the hinge device 50, this common axis is the X axis.

A pair of long holes 2a1 in the direction along the X axis are formed in the bottom surface portion 2a so as to be separated from each other along the axis.
In addition, a pair of engagement holes 2a5 that are separated from each other along the X-axis are formed in the vicinity of the center of the bottom surface portion 2a at positions that are symmetrical with respect to a through-hole 2b1 (described later) provided in the long side surface portion 2b. Has been.

In addition, an L-shaped rising portion 2a2 and a rising portion 2a3 that are raised to approximately 90 ° are provided on the long side edge of the bottom surface portion 2a opposite to the long side surface portion 2b.
The L-shaped rising portion 2a2 has a cutout portion 2a4 cut out along the X-axis direction on the base side, and is L-shaped.

On the other hand, a through hole 2b1 is formed substantially at the center of the long side surface portion 2b. The central axis of the through hole 2b1 is the Y axis in the hinge device 50.
In addition, a pair of square holes 2b2 that are separated from each other in the X-axis direction are formed at positions that are symmetrical with respect to the through-hole 2b1.
In addition, a protrusion 2b3 that is rectangular and protrudes inward is formed by a half punch adjacent to one of the square holes 2b2.

On the other hand, a cut portion 2c2 that is partially bent is provided at the edge of the short side surface portion 2c on the bottom surface portion 2a side, and the cut portion 2c2 extends from the bottom surface portion 2a in the X-axis direction. The extending portion 2a6 is engaged.
And this extension part 2a6 is formed so that the front-end | tip may protrude outside the outer surface of the short side part 2c, and the contact surface which is the surface by the side of the long side part 2b of this protrusion part 2a6t which protruded The ST abuts against the side surfaces 1Ahs and 1Bhs (see FIG. 6) of the connecting portions 1Ah and 1Bh of the first and second brackets 1A and 1B to restrict the rotation of the hinge device 50 about the X axis. (This regulation structure will be described later).

Next, the camshaft 5 will be described in detail with reference to FIGS.
8 is a view from a perspective direction substantially similar to the camshaft 5 in the assembly view of FIG. 5, and FIG. 9 is a view as seen from the lower left side in FIG. FIG. 10 is a view of FIG. 9 as viewed from obliquely above.

The cam shaft 5 has a substantially semi-cylindrical shape in which a semicylindrical portion 5e2 is connected to a substantially rectangular parallelepiped base portion 5e1 extending in the direction of the axis X5, and is formed of a synthetic resin.
An example of a resin that can be used is PBT (polybutylene terephthalate). It is good also as PBT which added the glass fiber in order to improve an intensity | strength further.

  A bottomed hole 5a1 having an axis X5 as a central axis is formed in one end surface portion 5a of the cam shaft 5.

Further, the donut-shaped surface around the hole 5a1 is formed in a shape that is uneven in the axial direction, and is provided with a cam portion 5M having a cam surface in the circumferential direction.
As shown in FIG. 8, the cam portion 5M has a pair of convex portions 5M1 at positions facing each other across the axis X5 (position shifted by 180 °). The convex portions 5M1 It is formed in a surface shape that connects from the reference surface 5M2 to the most protruding surface 5M1a of the convex portion 5M1 via the inclined surface 5M3.

On the other hand, a pair of projecting portions 5c1 and 5c2 projecting outward are provided on the side of the other end surface portion 5b on the side surface of the base portion 5e1 (see also FIG. 9).
Further, the end surface portion 5b is provided with a spring guide 5d (see also FIG. 9) that protrudes in a cylindrical shape with the axis X5 as the central axis.

  The axis X5 is coaxial with the X axis when the camshaft 5 is attached to the base frame 2.

In FIG. 9, a pair of protrusions 5f are provided on the bottom surface portion 5e1a of the base portion 5e1 so as to be separated in the longitudinal direction.
In addition, a concave portion 5g is formed in the middle portion in the longitudinal direction so that the cam shaft 5 has a substantially U shape. Hereinafter, the length of the concave portion 5g in the longitudinal direction is referred to as L (see FIG. 10).

Next, the cam ring 6 will be described in detail with reference to FIG.
FIG. 11A is a perspective view of the cam ring 6 as viewed from the surface facing the cam shaft 5, and FIG. 11B is the opposite surface, here the same direction as the perspective direction of FIG. It is the figure seen from.

  The cam ring 6 is made of synthetic resin. Examples of the resin that can be used include POM (polyacetal).

The cam ring 6 has a double-sided D-cut through hole 6a.
Further, the donut-shaped surface around the through hole 6a in one end surface portion 6b is formed with an uneven surface in the axial direction, and a cam portion 6M having a cam surface in the circumferential direction is provided.
As shown in FIG. 11A, the cam portion 6M has a pair of convex portions 6M1 at positions facing each other across the axis X6 (position shifted by 180 °). It is formed in a surface shape that is connected to the most protruding surface 6M1a of the convex portion 6M1 via the inclined surface 6M3 from the reference surface 6M2 that is a shape surface.

As will be described in detail later, the cam ring 6 is assembled so that the cam portions 5M and 6M are coaxial with the cam shaft 5 and are relatively rotated while being pressed.
Therefore, according to the cam shape of the cam portions 5M and 6M, it is possible to freely set the friction feeling and the click feeling at the time of rotation, the rotation angle at which this click feeling is exhibited, and the like.

  In this embodiment, the rotational resistance is large in the angular range where the convex portions 5M1 and 6M1 of the cam portions 5M and 6M are in contact with each other, and the rotational resistance is small in the non-contacting angular range. You can feel a click.

Next, the 1st-3rd studs 7-9 are demonstrated using FIG.
The first stud 7 includes a base tube portion 7a formed with D cuts on both sides, and first and second shaft portions 7b and 7c having a smaller diameter than the base tube portion 7a extending coaxially from the base tube portion 7a. It is formed.
Both side D cuts corresponding to the base tube portion 7a are formed on the distal end side of the first shaft portion 7b.

The second stud 8 has a circular flange portion 8a and a shaft portion 8b extending coaxially with the flange portion 8a.
Both side D cuts are formed on the tip side of the shaft portion 8b.

The third stud 9 has a base tube portion 9a and a shaft portion 9b extending coaxially from the base tube portion 9a and having a smaller diameter than the base tube portion 9a.
A double-sided D-cut is formed on the tip side of the shaft 9b, and a double-sided D-cut 9c is also formed on the end of the base tube 9a opposite to the shaft 9b.

  These first to third studs 7 to 9 are made of a metal material. For example, stainless steel can be used as the material.

  The subframe 3, the spring plate 10, and the lock plate 11 will be further described with reference to FIG.

The subframe 3 has a substantially rectangular shape, and is formed by pressing and bending a metal plate.
Examples of the metal that can be used include a stainless steel material having a thickness of 0.8 mm and an SPCC material.
In the case of the SPCC material, the surface may be nitrided for modification.

A pair of through-holes 3a are formed on both ends of the subframe 3 in the longitudinal direction so as to be screwed to the counterpart part.
As the counterpart component, for example, there is a frame 152a of the image display panel 152 (see FIG. 4). As described above, the subframe 3 is connected to the engaging portion 152a2 formed on the rib 152a1 provided on the frame 152. It engages without play and is fixed to the frame 152 via a through-hole 3a with a screw (not shown) and integrated with the image display panel 152.

  Returning to FIG. 5, in the vicinity of the center of the subframe 3, a square hole 3 b having a longitudinal direction along the longitudinal direction is formed. The square hole 3b is formed so as to fit with the double-sided D-cut portion 9c of the third stud 9 without play.

The spring plate 10 is made of a metal plate having a spring property (such as a stainless steel plate or a phosphor bronze plate), and is formed in a shape that becomes a part of a cylindrical surface that protrudes from the center and is gently curved.
A through hole 10a is formed near the center, and a bent portion 10b is formed at each of a pair of side edges that form a straight line.
Further, the other pair of side edges exhibiting a curve are respectively formed with convex portions 10c that protrude on the side opposite to the bent portion 10b.

The lock plate 11 has a substantially disk shape and is formed of a metal plate material such as stainless steel. A through-hole 11a having a double-sided D-cut shape is formed at the center, and a semicircular cut-out portion 11b is formed at each peripheral edge corresponding to the D-cut position.
In addition, an overhanging portion 11c that protrudes outward in the radial direction is formed in a predetermined angular range at the peripheral edge.

The entire hinge device 50 including the members described in detail above will be described in detail.
The hinge device 50 has two rotation axes, an X axis and a Y axis, and each rotation structure will be described in the order of the Y axis and the X axis.

<Rotating structure around Y axis>
In FIG. 5, the third stud 9 is integrated with the subframe 3, with the double-sided D-cut portions 9 c fitting into the square holes 3 b of the subframe 3.
On the other hand, the shaft portion 9 b of the third stud 9 is inserted from the outside into the through hole 2 b 1 of the long side surface portion 2 b in the base frame 2.
The inserted shaft portion 9 b is inserted into the through hole 10 a of the spring plate 10, and further inserted into the through hole 11 a of the lock plate 11 and crimped, and the third stud 9 is integrated with the lock plate 11. .

The bent portion 10b of the spring plate 10 is engaged with the square hole 2b2 of the base frame 2 so that the rotation about the Y axis is restricted.
Further, since the caulking operation of the shaft portion 9b is performed by crushing the spring plate 10 by a predetermined amount, the spring plate 10 always urges the lock plate 11 in the Y-axis direction by its elastic repulsive force.

Therefore, the lock plate 11 can rotate around the Y axis while generating a predetermined frictional force with respect to the spring plate 10.
That is, the sub frame 3 is configured to be held by this frictional force at an arbitrary angular position around the Y axis with respect to the base frame 2 and to be rotated when a force against the frictional force is applied.

Further, as the lock plate 11 rotates about the Y axis, the convex portion 10c of the spring plate 10 is fitted to the notch portion 11b at the predetermined rotation angle position. A click feeling accompanying rotation around the Y axis is exhibited.
FIG. 5 is described at an angular position where the notch portion 11b and the convex portion 10c are fitted.
Further, as the lock plate 11 rotates about the Y axis, the two end surface portions of the projecting portion 11c come into contact with the end surfaces of the pair of engagement holes 2a5 of the base frame 2 at the two predetermined rotation angle positions. Further rotation is prohibited.
Therefore, the sub frame 3 can be rotated with respect to the base frame 2 within a predetermined angular range around the Y axis.

<Rotating structure around X axis>
First, the connection between the first and second brackets 1A and 1B and the base frame 2 will be described.
3, 5 and 6, the first shaft portion 7b of the first stud 7 is inserted from the inside of the base frame 2 into the through hole 2c1 of one short side surface portion 2c, and further, the first bracket. The through holes 1Af and 1Ae are inserted in this order from the 1A overlapping side surface 1Ad side.

In the 1st axial part 7b, the contact surface 7b1 orthogonal to an axis | shaft is naturally formed in the root side of the part in which the double-sided D cut was given.
The contact surface 7b1 contacts the contact surface 1Ag (see FIG. 6) of the first bracket 1A to position the first stud 7 in the outward direction on the X axis. Further, the double-sided D-cut of the first shaft portion 7b and the double-sided D-cut of the first bracket 1A are engaged, and rotation about the X-axis is prohibited.

On the other hand, the X-axis direction distance L7 between the contact surface 7b1 of the first shaft portion 7b and the end surface 7a1 of the base tube portion 7a caused by the diameter difference is slightly smaller than the plate thickness of the short side surface portion 2c of the base frame 2. Since it is set large, the base frame 2 can be rotated around the X axis without resistance when the tip of the first shaft portion 7b that has passed through the through hole 1Ae is fixed by caulking. Supported.
Further, since the side surface portion 1Ab and the overlapping side surface portion 1Ad of the first bracket 1A are pressed in the axial direction at the time of caulking, both are integrated with the first stud 7 in close contact.

The second bracket 1B and the base frame 2 are coupled by a second stud 8.
The shaft portion 8b of the second stud 8 is inserted from the inside of the base frame 2 into the through hole 2c1 of the other short side surface portion 2c, and further, the through hole 1Bf, from the overlapping side surface portion 1Bd side of the second bracket 1B. Insert them in the order of 1Be.

The shaft portion 8b has a contact surface 8b1 orthogonal to the shaft on the flange portion 8a side of the portion subjected to double-sided D-cut.
The contact surface 8b1 contacts the contact surface 1Bg of the second bracket 1B, and the second stud 8 is positioned outward on the X axis.
Further, the double-sided D-cut of the shaft portion 8b and the double-sided D-cut of the second bracket 1B are engaged, and rotation about the X-axis is prohibited.

  On the other hand, the distance L8 in the X-axis direction between the contact surface 8b1 of the shaft portion 8b and the end surface 8a1 on the shaft portion 8b side of the flange portion 8a is set slightly larger than the plate thickness of the short side surface portion 2c of the base frame 2. Therefore, when the tip of the shaft portion 8b that has passed through the through hole 1Be is caulked and fixed, the base frame 2 is supported so as to be rotatable around the X axis without resistance with respect to the second bracket 1B.

  Further, since the side surface portion 1Bb and the overlapping side surface portion 1Bd of the second bracket 1B are pressed in the axial direction at the time of caulking, they are integrated with the second stud 8 in close contact with each other.

  Next, a description will be given of the cam mechanism M1 that provides friction and a click feeling in the rotation around the X axis.

  In FIG. 5, a through hole 6 a of the cam ring 6 is extrapolated to the second shaft portion 7 c of the first stud 7. Here, since both the D-cuts are engaged, the cam ring 6 is prohibited from rotating with respect to the first stud 7.

On the other hand, one end side of the coil spring 12 engages with the flange portion 8a of the second stud 8 and is disposed on the X axis.
The shaft extending from the flange portion 8a of the second stud 8 is only the shaft portion 8b in the embodiment, but depending on the inner diameter of the coil spring 12, it extends to the side opposite to the shaft portion 8b (coil spring 12 side). You may have another axis part.

Further, the cam shaft 5 is arranged on the X axis so that its spring guide 5d (see also FIG. 9) is engaged with the other end of the coil spring 12, and the cam portion 5M is engaged with the cam portion 6M of the cam ring 6. It is arranged.
In addition, the tip end side of the second shaft portion 7c of the first stud 7 is inserted into the bottomed hole 5a1 of the cam shaft 5, and the cam shaft 5 is supported in alignment.

  Here, the inner diameter of the coil spring 12 is larger than the outer diameter of the flange portion 8a of the second stud 8 and the outer diameter of the spring guide 5d of the cam shaft 5, and they are offset from each other. Engages well without.

In this configuration, the length of each member in the X-axis direction is set so that the coil spring 12 is compressed by a predetermined amount in the longitudinal direction.
Therefore, the coil spring 12 urges the cam shaft 5 in the direction in which the cam portion 5M presses the cam portion 6M by the elastic repulsive force accompanying this compression.

On the other hand, the cam shaft 5 is disposed so as to be prohibited from rotating around the X axis with respect to the base frame 2 and to reciprocate a predetermined distance in the X axis direction.
Specifically, one protrusion 5c1 of the cam shaft 5 is in the notch 2a4 of the base frame 2, and the other protrusion 5c1 is in the gap between the protrusion 2b3 on the long side surface 2b and the bottom 2a. The pair of protrusions 5f (see FIG. 9) of the cam shaft 5 are engaged with the long holes 2a1 (see FIG. 7) of the base frame 2.

In each engagement structure, the engagement shape on the base frame 2 side is a notch or a hole extending in the X-axis direction, and the width in the direction perpendicular to the X-axis is the side of the cam shaft 5 to be engaged Is set to be approximately the same as the width of the protrusions and protrusions.
Therefore, the cam shaft 5 is movable with respect to the base frame 2 within an allowable range in the X-axis direction set by the shapes of the long hole 2a1 and the notch 2a4 to be engaged.

  12 is a view of the hinge device 50 as viewed from the direction orthogonal to the X axis and the Y axis. As shown in FIG. 12, the L-shaped rising portion 2a2 provided on the base frame 2 and the standing device 2a. The raised portion 2a3 is formed along the side surface of the camshaft 5, and the camshaft 5 is held between these and the long side surface portion 2b with minimal play in the direction perpendicular to the X axis. Is prevented from detaching from the X axis.

Further, the recess 5g provided in the cam shaft 5 is configured so that the spring plate 10 and the lock plate 11 enter, and the X axis and the outer surface of the long side surface portion 2b of the base frame 2 correspond to the entrance. The distance L2 can be shortened, and the hinge device 50 can be made smaller.
Therefore, the image display device 150 using the hinge device 50 can also be reduced in size.

The length L of the concave portion 5g in the longitudinal direction is set to a necessary length so as not to interfere with other members when the cam shaft 5 is incorporated into the base frame 2.
Specifically, when the camshaft 5 is incorporated into the base frame 2, the pair of projecting portions 5c1 are housed in the base frame 2 at positions where they do not interfere with the L-shaped rising portions 2a2 and the projecting portions 2b3 (see FIG. 5). Arrow E1) and then slide in the X-axis direction (arrow E2 in FIG. 5).
Accordingly, the length L of the concave portion 5g is set so as to ensure the escape from the counterpart component corresponding to the sliding operation of the arrow E2.

Next, a restricting structure of the rotation range around the X axis (hereinafter also referred to as a stopper structure) will be described with reference to FIG.
FIG. 13 shows only the base frame 2 and the brackets 1A and 1B for easy understanding, and FIG. 13A is a basic position (position shown in FIG. 5) (first angular position K1). FIG. 13 (b) shows a first rotation position (second angular position K2) that is rotated by 90 ° from this basic position (arrow A in FIG. 5) and further rotation is restricted. ing.

A pair of contact surfaces ST, which are partial surfaces of the extending portion 2a6 in the bottom surface portion 2a of the base frame 2, indicated by oblique lines in FIG. 13A, are the first surfaces shown in FIG. 13B. In the rotation position, they contact the side surfaces 1Ahs and 1Bhs of the connecting portions 1Ah and 1Bh, respectively.
When the base frame 2 is to be rotated by 90 ° or more, the pressing force indicated by the arrow F is applied to the connecting portions 1Ah and 1Bh.

  The pressing force F will be described using the second bracket 1B as a representative with reference to FIG.

The second bracket 1B has the bottom surface portion 1Ba fixed, and the overlapping side surface portion 1Bd and the side surface portion 1Bc are formed by bending the bottom surface portion 1Ba, so that a strong pressing force F is applied to the side surface 1Bhs. Then, it tries to deform in the direction of the broken line arrow HK.
However, the overlapping side surface portion 1Bd is in close contact with the other side surface portion 1Bb, and is caulked and fixed together with the second stud 8 by the second stud 8 penetrating both.
Therefore, the second bracket 1B receives the pressing force F together with the second stud 8 in cooperation with not only the overlapping side surface portion 1Bd but also the other side surface portion 1Bb and the second stud 8, so And exhibits extremely high strength.
Therefore, the portion of the brackets 1A and 1B where the contact surface ST of the base frame 2 on the rotating side contacts is not limited to the overlapping side surface portions 1Ad and 1Bd as in this embodiment, but other side surface portions 1Ab and 1Bb. , Even if it is provided on the first stud 7 or the second stud 8, it also exhibits a very high strength against bending.

On the other hand, since the contact surface ST on the base frame 2 side is the surface of the extending portion 2a6, when contacting the side surfaces 1Ahs and 1Bhs of the connecting portions 1Ah and 1Bh, the extending portion 2a6 is shown in FIG. As described above, the reaction force Fr of the pressing force F is applied.
As described above, since the extending portion 2a6 is engaged with the cut portion 2c2 formed in the short side surface portion 2c, even if the extending portion 2a6 is deformed in the direction by the reaction force Fr, the extending portion 2a6. Contacts the side surface of the cut portion 2c2 and receives the reaction force Fr together with the arm-like locking portion 2c3 having the side surface.
Therefore, not only the brackets 1A and 1B but also the base frame 2 side has a very high strength as a stopper.

That is, the hinge device 50 of this embodiment has a very high stopper strength that restricts the rotation about the X axis, and is extremely difficult to break even if it is forced to rotate beyond the restriction angle position.
Here, when this stopper structure is used for both the first and second brackets as in the embodiment, it is preferable because higher strength is obtained, but it may be used for only one of them. Of course, a high rotation restricting strength can be obtained also in that case.
In addition, this stopper structure is preferable because the highest strength can be obtained when both the brackets 1A, 1B and the base frame 2 that are in contact with each other have the above-described shape and configuration as in the embodiment. Only one of them may be used.
Of course, it goes without saying that a high rotation restricting strength can also be obtained in this case.

In the image display device 150 of the embodiment provided with the hinge device 50 of this embodiment, even if the image display panel 152 is opened beyond a predetermined rotation restriction angle position, for example, 90 °, the hinge device 50 is extremely broken. It is difficult and very reliable.
In other words, the bracket 1A (1B) side structure in the stopper structure around the X-axis of this embodiment will be described with reference to FIG. 6. Each bracket 1A (1B) has a bottom surface 1Aa (1Ba) → one side surface. 1Ac (1Bc) → overlapping side surface portion 1Ad (1Bd) → stud 7 (8) → other side surface portion 1Ab (1Bb) → bottom surface portion 1Aa (1Ba) constituting a closed loop (annular structure) Can be considered. The force F is received by any one of the constituent members of the loop.

  Usually, such a closed loop shape is extremely difficult to deform from the inside to the outside, and has a high strength against deformation. Therefore, the stopper structure of the embodiment has a high strength. Is easily understood.

In comparison with the comparative example in which the loop structure is cut by the inventors' experiment, specifically, the comparative example in which the stud 7 (8) is removed, the embodiment is a modification of the connecting portions 1Ah and 1Bh with respect to the pressing force F. It has been confirmed that it has twice or more strength.
In other words, the strength equal to or higher than that of the comparative example can be obtained even if the thickness of the constituent member is reduced or the shape is reduced, thereby reducing the cost and further downsizing.

The hinge device 50 of the embodiment is partially repeated, but with the above-described configuration, the direction of the arrow A1 around the X axis with respect to the first and second brackets 1A and 1B from the basic rotation position shown in FIG. When the subframe 3 is rotated, the base frame 2 connected to the subframe 3 by the third stud 9 is also rotated integrally.
As the base frame 2 rotates, the cam shaft 5 held by the base frame 2 and the coil spring 12 that urges the cam shaft 5 toward the cam ring 6 also rotate integrally with the base frame 2.

  On the other hand, since the cam ring 6 is prohibited from rotating with respect to the first bracket 1A by the first stud 7, the cam portion 5M of the cam shaft 5 and the cam portion 6M of the cam ring 6 are rotated by the rotation of the base frame 2. Slide around the X axis while urging each other.

As the base frame 2 rotates, the cam shaft 5 reciprocates in the X-axis direction according to the cam shapes of the cam portions 5M and 6M. Therefore, the amount of deflection of the coil spring 12 is changed by the reciprocation, and the urging force for urging the cam shaft 5 is changed.
The change of the urging force is grasped by the user as a rotation feeling and also recognized as a click feeling.

The cam shaft 5 only reciprocates in the X-axis direction with respect to the base frame 2, and the cam shaft 5 is provided with a recess 5 g that has a recess in the axial direction greater than the reciprocating stroke.
Accordingly, the rotation restricting mechanism M2 around the Y axis can be accommodated in the recess 5g regardless of the rotation angle position of the base frame 2, and the hinge device 50 can be configured extremely compactly.

As described above, the hinge device 50 according to the embodiment described in detail above can obtain a desired click feeling at a desired rotation position in accordance with the cam shapes of the cam portions 5M and 6M that are engaged with each other. Furthermore, the coil spring 12, the cam shaft 5, and the cam ring 6 can be exchanged.
This replacement is possible because the hinge device 50 according to the embodiment has no shaft member that is fixed through the brackets 1A and 1B that support the base frame 2.
More specifically, the distance Ls between the tips of the first and second studs 7 and 8 (see FIG. 14: FIG. 14 shows that the coil spring 12, the cam shaft 5, and the cam ring 6 are removed from the hinge device 50. (Showing the state) is set to be longer than the total length Lc of the camshaft 5 (see FIG. 10). Thereby, the cam shaft 5 can be removed without the shafts of the studs 7 and 8 being caught.
Here, the total length Lc of the cam shaft 5 is sufficient based on the most protruding surface 5M1a of the cam portion 5M. However, depending on the cam shape, the total length Lc may be based on the reference surface 5M2. This may be set according to the cam position when the camshaft 5 is removed.

The replacement of the coil spring 12, the cam shaft 5, and the cam ring 6 will be specifically described.
First, when the coil spring 12 is contracted in the X-axis direction, the engagement between the flange portion 8a of the second stud 8 and the spring guide 5d of the cam shaft 5 can be released and removed from the X-axis.
Further, after removing the coil spring 12, the cam shaft 5 is released from the engagement with the base frame 2 by sliding in the direction opposite to the arrow E2 in FIG. 5 and can be easily removed.
Further, if the cam shaft 5 is disengaged, the cam ring 6 is detached from the second shaft portion 7c of the first stud 7 by sliding in the axial direction. FIG. 14 shows a state where these members are removed.

In this way, the hinge device 50 can easily and independently replace the coil spring 12, the cam shaft 5, and the cam ring 6, so that other coil springs having different spring constants, cam portion shapes, cam portion protruding positions, and the like can be obtained. The rotation specifications (rotation resistance, click feeling, rotation angle position where a click feeling can be obtained, etc.) for rotation around the X axis can be set freely and easily by exchanging with or combining with a camshaft or cam ring. can do.
Further, as can be seen from the above, the hinge device 50 is used for various image display devices having different rotation specifications of the image display panel even if members other than the coil spring 12, the cam shaft 5 and the cam ring 6 are shared. Therefore, it can be provided at a very low cost.

If the expression that the hinge device 50 of the embodiment described in detail above rotates the rotating body around the X axis with respect to the fixed body is used, the first and second brackets 1A, 1B, A fixed body 50A is configured including the first and second studs 7 and 8 and the cam ring 6, and a rotating body 50B is configured including the base frame 2, the coil spring 12, and the cam shaft 5. Of course, the third stud 9 that rotates together with the base frame 2 is also included in the rotating body 50B.
When the hinge device 50 is mounted on the image display device 150, the position where the base frame 2 and the bracket 1 </ b> A or the stud 7 are in contact with each other is the position where the image display unit 152 is stored in the main body 151 (both are The position is the most open position that is raised by the rotation from the position (opposite adjacent). Again, this rotation range is usually at least 90 ° or more.
Specifically, for example, when the allowable rotation angle range is 90 °, when the image display unit 152 is raised from the main body 151 and opened 90 °, the contact portion 2a6 of the base frame 2 is moved to the second position of the bracket 1A. 1 side surface part 1Ab, overlap side surface part 1Ad, or the stud 7 is contacted, and the rotation of 90 ° or more is firmly restricted to prevent the occurrence of problems such as destruction.

The embodiment of the present invention is not limited to the configuration and procedure described above, and it goes without saying that modifications may be made without departing from the scope of the present invention.
A lubricant such as grease may be applied to the sliding portion of each member.
The cam shaft 5 and the cam ring 6 are not limited to those having the axial length as shown in the embodiment. In any shape (length), it is desirable for downsizing that a recess for escaping the rotation restricting mechanism M2 is formed on either side.
Of course, the double-sided D-cut of each engaging portion may be a single-sided D-cut.

Needless to say, the image display device to which the hinge device of the embodiment can be applied is not limited to a video camera, as long as it is a device having a thin image display panel. The present invention can be applied to various devices such as a digital still camera, a notebook personal computer, a mobile phone, a personal digital assistant (PDA), a portable television, a game device, and a portable optical disc player.
Further, the hinge device of the embodiment can be applied even if the image display panel is a panel having functions other than image display, for example, an operation panel in which operation buttons are arranged.

  The above-described embodiment is configured to have two axes, the X axis and the Y axis, but may be configured to rotate only around the X axis. In this case, the coil spring, the cam shaft, and the cam ring may be exchanged to obtain an arbitrary It goes without saying that the effect of easily obtaining a hinge of a rotation specification can be obtained.

In the embodiment, the coil spring has been described as the urging member that urges the cam shaft. However, the present invention is not limited to this, and an elastic body such as rubber may be used. Further, an elastic body such as rubber and a coil spring may be used in combination.
Further, the recess 5g may be formed so as to fall into a region on the left side of the X axis in FIG.

It is an external view which shows the Example of the image display apparatus of this invention. It is an external view explaining the rotation form of the image display panel in the Example of the image display apparatus of this invention. It is an external view which shows the Example of the hinge apparatus of this invention. It is drawing for demonstrating the structure attached to the image display apparatus of the Example of the hinge apparatus of this invention. It is an exploded view explaining the Example of the hinge apparatus of this invention. It is a perspective view for demonstrating the 1st principal part in the Example of the hinge apparatus of this invention. It is a perspective view for demonstrating the 2nd principal part in the Example of the hinge apparatus of this invention. It is a 1st perspective view for demonstrating the 3rd principal part in the Example of the hinge apparatus of this invention. It is a 2nd perspective view for demonstrating the 3rd principal part in the Example of the hinge apparatus of this invention. It is a 3rd perspective view for demonstrating the 3rd principal part in the Example of the hinge apparatus of this invention. It is a perspective view for demonstrating the 4th principal part in the Example of the hinge apparatus of this invention. It is a top view which shows the Example of the hinge apparatus of this invention. It is a perspective view for demonstrating rotation operation in the Example of the hinge apparatus of this invention. It is a perspective view for demonstrating the Example of the hinge apparatus of this invention.

Explanation of symbols

1A, 1B 1st, 2nd bracket 1Ba Bottom face part (base face part)
1Ba1 Hole 1Bb, 1Bc Side surface portion 1Bd Superposed side surface portion (superimposed surface portion)
1Be Through hole (opening)
1Bf Through-hole 1Bg Contact surface 1Bh Connecting portion 1Bhs Contact surface 2 Base frame 2a Bottom surface portion (longitudinal side portion)
2a1 long hole 2a2 L-shaped rising part 2a3 rising part 2a4 notch part 2a5 engagement hole 2a6 extension part (contact part)
2a6t Protruding part 2b Long side part (base part)
2b1 Through-hole 2b2 Square hole 2b3 Projection 2c Short side (side)
2cA, 2cB First and second short side surfaces (side portions)
2c1 Through-hole 2c2 Cut section 3 Subframe 5 Cam shaft (first cam body)
5a, 5b End face part 5a1 Hole 5c1 Projection part 5d Spring guide 5e1 Base part 5e2 Semi-cylindrical part 5f Projection 5g Concave part 5M Cam part (first cam surface)
5M1 Protruding portion 5M1a Most protruding surface 5M2 Reference surface 5M3 Inclined surface 6 Cam ring (second cam body)
6a Through-hole 6b (One) end surface part 6M Cam part (2nd cam surface)
6M1 Convex portion 6M1a Most protruding surface 6M2 Reference surface 6M3 Inclined surface 7 First stud (first shaft)
7a Base cylinder part 7b, 7c 1st, 2nd axial part 7b1 Contact surface 8 2nd stud (2nd shaft)
8a Flange portion 8b Shaft portion 9 Third stud (third shaft)
9a Base tube portion 9b Shaft portion 9c Double-sided D-cut portion 10 Spring plate 10a Through hole 10b Bending portion 10c Convex portion 11 Lock plate (shaft fixing portion)
11a Through-hole 11b Notch 11c Overhang 12 Coil spring (biasing body)
DESCRIPTION OF SYMBOLS 50 Hinge apparatus 50A Fixed body 50B Rotating body 80 Lens part 81 Image pick-up element 82 Signal processing circuit 83 Recording / reproducing part 84 Image display part 150 Video camera (image display apparatus)
151 Body 151a, 151b First and second chassis 151G Outer surface (side surface)
152 Image display panel (image display unit)
152a Frame 152a1 Rib 152a2 Engaging portion 152b Illuminating devices K1, K2 First and second angular positions M1 Cam mechanism M2 Rotation restricting mechanisms MG1, MG2 Bending portion ST Contact surface

Claims (7)

In the hinge device configured to support the rotating body relative to the fixed body so as to be relatively rotatable about one rotation axis,
The rotating body is
A base portion extending along the one rotation axis, and a through hole extending from both ends of the base portion in a direction orthogonal to the one rotation axis and having the one rotation axis as a central axis are provided. A base frame having first and second sides;
A first cam surface at one end and a hole with a bottom on the first cam surface side ; the base portion makes rotation about the one rotation axis relative to the base portion impossible; and A first cam body supported so as to be movable in the direction of one rotation axis;
A biasing body disposed between the first cam body and the second side portion and biasing the first cam body toward the first side portion;
The fixed body is
First and second shafts, which are respectively inserted through the first and second side through-holes and support the base frame so as to freely rotate about the one rotation axis;
A second cam surface is provided at one end, and the first shaft rotates between the first cam body and the first side portion around the one rotation axis with respect to the first shaft. A second cam body that is immovably supported, and
The distal end of the first shaft on the second side portion side is inserted into the bottomed hole portion of the first cam body, and the first cam surface and the A hinge device characterized in that a second cam surface is in pressure contact with each other in the one rotation axis direction .   2. The hinge device according to claim 1, wherein a distance between tips of the first and second shafts is longer than a length of the first cam body in the one rotation axis direction. The base portion of the base frame has a through hole having a central axis about another rotation axis that is orthogonal to a plane including the one rotation axis,
A third shaft inserted from the outside into the through hole;
A shaft fixing portion that is fixed to a tip portion of the inserted third shaft, sandwiches the base portion with the third shaft, and rotates around the other rotation axis with respect to the base frame;
A recess provided on a side portion of the first cam body,
The hinge device according to claim 1, wherein the shaft fixing portion is configured to enter the concave portion. A main body part, an image display part that displays an image, and a hinge device that opens and closes the image display part by rotation about at least one axis with respect to the main body part,
The hinge device is the hinge device according to claim 1 or 2,
The fixed body is connected to the main body portion side, and the rotating body is connected to the image display portion side. A main body part, an image display part that displays an image, and a hinge device that opens and closes the image display part by rotation about at least one axis with respect to the main body part,
The hinge device according to claim 3,
The fixed body is connected to the main body, and the third shaft is connected to the image display. The rotating body is allowed to rotate between a first angular position and a second angular position that form an angle of at least 90 ° around the one rotational axis,
The rotating body and the fixed body are the image display section and the main body, respectively, such that when the rotating body is at the first angular position, the image display section and the outer surface of the main body section face each other. The image display device according to claim 4, wherein the image display device is connected to the unit. The rotating body is allowed to rotate between a first angular position and a second angular position that form an angle of at least 90 ° around the one rotational axis,
The rotating body and the fixed body are the image display section and the main body, respectively, such that when the rotating body is at the first angular position, the image display section and the outer surface of the main body section face each other. Connected to the
The image display device according to claim 5, wherein the other rotation shaft is parallel to an outer surface that the image display unit is in close proximity to when the rotation body is at the first angular position.

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