JP2009174557A - Hinge device and equipment with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent generation of a gap between exterior members without causing interference with a casing member side to be opened/closed, regarding a hinge device to be used to open/close a casing member. <P>SOLUTION: This hinge device includes bearing parts 4 and 6 having a long diameter part in a bearing hole 68, which turnably supports a shaft (an opening/closing shaft 8), and supporting the shaft with the long diameter part freely to be displaced, first cam mechanisms 14 and 16 for engaging a cam follower (a cam follower part 44) with an eccentric cam 42 having an eccentric cam surface 46 so as to displace the shaft in response to a turning angle of the shaft in the long diameter part of the bearing, and second cam mechanisms 22 and 24 for engaging protrusions 78 and 80 of a turning cam, which is turned with the shaft, with the cam surface of a fixed cam 64 having a cam surface 74 formed at a different height so as to apply restoring force of a spring (a coil spring 26), which is provided on the shaft, between the cam surface and the protrusions. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device that connects members and enables two-axis operation centering on intersecting axes such as opening and closing of each member and rotation of the member, and more particularly, an opening and closing shaft that supports the member so that the member can be opened and closed. The present invention relates to a hinge device that is eccentric in accordance with a rotation angle and a device including the hinge device.

  A device such as a digital camera is provided with a hinge device that connects the housing unit and the monitor unit, and this hinge device realizes an opening / closing operation of the housing unit and the monitor unit and a rotation operation of the monitor unit. . In order to realize functions such as equipment specifications and the ability to stop at a certain angle, such a hinge device, for example, a function that regulates an independent rotation angle for each axis, and generation of a constant sliding rotation torque on each axis There is a need for a function, a click feeling generating function for generating a rotational resistance at a fixed angle position on each axis.

With regard to such a hinge device, Patent Document 1 discloses a configuration in which a body on the opening / closing axis side and a lid on the rotating shaft side are separated from each other in a biaxial hinge in which the opening / closing axis and the rotation axis are orthogonal to each other. Further, in Patent Document 2, an operation unit including two arc-shaped guide portions is fixed to a panel portion that is a separate member from the main body, and a fixing portion attached to the main body side is inserted into the guide portion. A hinge mechanism for rotating the panel portion with respect to the main body is disclosed.
JP 2002-227826 A (summary and FIG. 1 etc.) Japanese Utility Model Publication No. 55-166876 specification and drawings

  By the way, in a device provided with a hinge device, two casing members that can be opened and closed are joined by the hinge device, and the casing member is opened and closed by rotating an opening and closing shaft around the hinge device. It is installed inside and concealed. In addition, each casing member constitutes a display unit or a main body device of the device, and has a thickness larger than that of the hinge device installed inside the device. If such a casing member is opened and closed by a hinge device installed inside the apparatus, interference occurs on the opening and closing locus between the edges of the casing member, and the opposite edges of each other of the casing members come into contact with each other. Can not be opened and closed. In order to avoid this, it is necessary to regulate the shape of the casing member and provide a required gap between the casing members. There is a limit in changing the shape of the housing member on the device side, and a mechanism for performing desired opening and closing is required without changing the size and shape of the housing member.

  As shown in FIGS. 14A and 14B, when a hinge device 300 having a simple uniaxial structure is used, a main body that stores the liquid crystal unit side housing 302 when the liquid crystal unit side housing 302 is opened and closed. Since the edge surface 308 of the storage unit 306 of the side housing 304 and the edge surface 310 of the liquid crystal unit side housing 302 interfere with each other and contact occurs between them, in order to avoid interference between these edge surfaces, A clearance 312 for so-called escape is required at the interference location. 14A (broken line in FIG. 14B) shows a state in which the liquid crystal unit side housing 302 is stored in the storage portion 306 of the main body side housing 304, and FIG. The unit side housing 302 is rotated and pulled out from the storage unit 306 of the main body side housing 304. A gap 312 formed between the main body side housing 304 and the liquid crystal unit side housing 302 may expose the inside of the storage unit 306 and may cause dust or the like to enter. Such a gap 312 may deteriorate the appearance quality, for example, causing an irritating feeling to the entire apparatus 314.

  Regarding such problems, Patent Documents 1 and 2 do not disclose, nor do they disclose or suggest solutions.

  Accordingly, an object of the present invention relates to a hinge device used for opening and closing a housing member, etc., and to prevent the appearance member from generating a gap without causing interference on the side of the housing member to be opened and closed. is there.

Another object of the present invention is to provide a device provided with such a hinge device.

  In order to achieve the above object, a first aspect of the present invention is a hinge device having a long diameter portion in a bearing hole that rotatably supports a shaft, and the shaft is supported eccentrically by the long diameter portion. The height is different from the first cam mechanism in which the cam follower is engaged with the bearing portion and the eccentric cam having the eccentric cam surface, and the shaft is eccentric by the long diameter portion of the bearing hole according to the rotation angle of the shaft. A fixed cam having a cam surface is engaged with a protrusion on a rotating cam that rotates with the shaft, and a restoring force of a spring installed on the shaft is applied between the cam surface and the protrusion. And a second cam mechanism acted on. With this configuration, the above object is achieved.

  In order to achieve the above object, the hinge device preferably includes a stopper portion attached to the shaft, and the rotation range of the shaft may be regulated by the stopper portion. The above object can also be achieved by such a configuration.

  In order to achieve the above object, the hinge device may preferably include a stopper for restricting the rotational range of the shaft to the eccentric cam. The above object can also be achieved by such a configuration.

  In order to achieve the above object, a second aspect of the present invention is a device provided with a hinge device, wherein the first member and the second member are connected by a hinge device, and the first device is connected by the hinge device. And the second member can be opened and closed, the rotation center of the first member or the second member is eccentric according to the rotation angle, and the eccentric direction is determined by the long diameter portion of the bearing portion. It is regulated. With this configuration, the above object is achieved.

In order to achieve the above object, the device including the hinge device may preferably be configured to include the above-described hinge device. The above object can also be achieved by such a configuration.

  As described above, according to the present invention, the following effects can be obtained.

  (1) A hinge device used for opening / closing a casing member, etc., which does not interfere with the side of the casing member to be opened / closed, and can prevent a gap from being generated in the appearance member.

  (2) The rotation center of the shaft can be displaced according to the rotation angle of the shaft, and the distance between the member fixed to the bearing and the member fixed to the shaft is changed according to the angle due to the eccentric rotation of the shaft. The eccentric direction and distance can be regulated by the bearing hole forming the guide means, and the degree of freedom of opening and closing between the members can be increased according to the eccentric direction and distance.

  (3) Since the distance between the member fixing the bearing portion and the member fixed on the shaft side can be changed according to the angle due to the eccentric rotation of the shaft, it can be opened and closed when used for opening and closing the housing member, etc. Interference between housing members can be prevented.

  (4) According to the device provided with such a hinge device, it is possible to prevent interference between members, without being restricted by the thickness and shape of the member for avoiding interference, and to increase the degree of freedom in design. it can.

(5) Since the distance between the member fixed to the bearing portion and the member fixed to the shaft side can be changed according to the angle due to the eccentric rotation of the shaft, for example, between the member in the open / closed position and the open or closed position Therefore, measures such as a gap for opening and closing between members are not required.

[First Embodiment]

  The first embodiment will be described with reference to FIG. 1 and FIG. FIG. 1 is a perspective view showing a hinge device, and FIG. 2 is a front view of the hinge device shown by cutting a coil spring. The configurations shown in FIGS. 1 and 2 are examples, and the present invention is not limited to such configurations.

  As shown in FIGS. 1 and 2, the hinge device 2 rotatably supports an opening / closing shaft 8 by first and second bearing portions 4, 6, and a third portion is provided at an intermediate portion of the opening / closing shaft 8. The rotary shaft 12 is attached to the opening / closing shaft 8 in a direction intersecting with the bearing portion 10 and is rotatably supported.

  The opening / closing shaft 8 is an example of a shaft that is supported by the bearing portions 4 and 6 so as to be rotatable and eccentric. The open / close shaft 8 is provided with first cam mechanisms 14 and 16 and stopper mechanisms 18 and 20 outside the bearing portions 4 and 6, and between the bearing portions 4 and 6 and the bearing portion 10. Two cam mechanisms 22 and 24 are installed. The cam mechanisms 14 and 16 are mechanisms for decentering the opening / closing shaft 8 in accordance with the rotation angle of the opening / closing shaft 8, and the stopper mechanisms 18 and 20 are means for regulating the rotation angle range of the opening / closing shaft 8. In this embodiment, the rotation is restricted within a rotation range of 90 degrees from the position a to the position b of the rotating shaft 12. The cam mechanisms 22 and 24 give an angle, that is, a rotation moment to the opening / closing start point and the opening / closing end side of the opening / closing shaft 8 by the restoring force of the coil spring 26 maintained in a compressed state, thereby providing an automatic return force and a sense of stability. It is a means of generating.

  Next, FIG. 3 is referred with respect to the component configuration of the hinge device 2. FIG. 3 is an exploded perspective view showing the hinge device. The configuration shown in FIG. 3 is an example, and the present invention is not limited to such a configuration. 3, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals.

  The bearing portions 4 and 6 are means for supporting the opening / closing shaft 8 so as to be rotatable and eccentric, and are attached to the opening / closing shaft 8 at a constant interval. These bearing portions 4 and 6 are made of, for example, a rigid material such as a metal plate, and include a fixed portion 28 in parallel with the opening / closing shaft 8. The bearing portions 4 and 6 are formed with bearing holes 30 for rotatably supporting and opening and closing the opening / closing shaft 8, and the bearing holes 30 are oblong holes having a long diameter portion formed in the eccentric direction of the opening / closing shaft 8. It consists of In this embodiment, the long diameter portion is set in the direction of 45 degrees with respect to the surface portion of the fixed portion 28.

  The opening / closing shaft 8 is integrally provided with a bearing portion 10 at an intermediate portion thereof, and a pair of first cam shaft portions to which the cam mechanisms 14 and 16 and the stopper mechanisms 18 and 20 are attached on the end portion side with the bearing portion 10 interposed therebetween. 32, a pair of support shaft portions 34 supported by the bearing holes 30 of the bearing portions 4 and 6, and a pair of second cam shaft portions 36 to which the cam mechanisms 22 and 24 are attached. The cam shaft portion 32 is provided with a parallel surface portion 38 by performing a so-called I-cut for cutting off a part of the peripheral surface of the cylindrical shaft in parallel. The support shaft portion 34 is a cylindrical shaft, and the cam shaft portion 36 has a so-called I-cut on the peripheral surface of the cylindrical shaft having a diameter larger than that of the support shaft portion 34, and includes a parallel surface portion 40.

  Each of the cam mechanisms 14 and 16 includes an eccentric cam 42 and a cylindrical cam follower portion 44 that protrudes from the bearing portion 4. The eccentric cam 42 includes an eccentric cam surface 46 that causes the opening / closing shaft 8 to be eccentric depending on the rotation angle. ing. The eccentric cam 42 includes a fixing hole 48, and the cam shaft portion 32 of the opening / closing shaft 8 is inserted into the fixing hole 48, thereby being fixed to the cam shaft portion 32. A ring-shaped washer 50 made of synthetic resin is attached between each eccentric cam 42 and the bearings 4 and 6 to maintain smooth rotation. A cam follower portion 44 attached to the bearing portions 4 and 6 contacts the eccentric cam surface 46 of the eccentric cam 42.

  The stopper mechanisms 18, 20 are combined with the eccentric cam 42, fixed to the cam shaft portion 32 and rotated together with the opening / closing shaft 8, and a second stopper formed on the fixed portion 28 side of the bearing portion 4. The stopper portion 54 and the engagement between the stopper portion 52 and the stopper portion 54 determine the rotation angle range of the opening / closing shaft 8. The stopper portion 52 includes a stopper piece 56 for engaging with the stopper portion 54 formed on the fixed portion 28, and by inserting the engaging protrusion 58 protruded from the eccentric cam 42 into the engaging hole 60, Combine with the eccentric cam 42. A fixed hole 62 similar to the eccentric cam 42 is formed in the stopper portion 52, and the cam shaft portion 32 of the opening / closing shaft 8 is inserted into the fixing hole 62, and the stopper portion 52 is fixed to the opening / closing shaft 8.

  The cam mechanisms 22 and 24 include a fixed cam 64 fixed to the bearing portions 4 and 6, a rotating cam 66 that is slidably supported by the cam shaft portion 36 of the opening / closing shaft 8, and a coil spring 26. ing. The fixed cam 64 includes a bearing hole 68 through which the support shaft portion 34 of the opening / closing shaft 8 is inserted, and a plurality of fixing protrusions 70 and positioning holes 71 are formed around the bearing hole 68. The projecting portion 70 is inserted into the fixing recess 72 or the fixing hole 75 of the bearing portions 4 and 6, and the positioning projection 73 on the bearing portions 4 and 6 side is inserted into the positioning hole 71. And united. The shape of the bearing hole 68 is the same as that of the bearing hole 30 of the bearing portion 4. The fixed cam 64 includes a cam surface 74 formed of curved surfaces having different heights in the thickness direction. The rotary cam 66 includes, for example, a synthetic resin and a sliding hole 76 having a cross-sectional shape similar to that of the cam shaft portion 36. The rotating cam 66 protrudes in a direction orthogonal to the central axis of the sliding hole 76, and the height of the top is equal. Semi-cylindrical protrusions 78 and 80 having different diameters are provided, and these protrusions 78 and 80 are brought into contact with the cam surface 74 of the fixed cam 64. A reinforcing ring 84 made of metal is attached to the small-diameter portion 82 formed in the rotating cam 66, and the cam shaft portion 36 is provided between the rotating cam 66 having the reinforcing ring 84 and the bearing portion 10. The attached coil spring 26 is inserted.

  The bearing portion 10 is provided with a stopper mechanism 86 that restricts the rotation of the rotating shaft 12, and the end portion of the rotating shaft 12 is inserted into the fixing hole 90 of the fixing plate 88 and fixed to the fixing plate 88.

  Next, the cam mechanisms 22 and 24 will be described with reference to FIGS. FIG. 4 is a view showing a cam mechanism excluding the coil spring, FIG. 5 is a view showing a fixed cam, and FIG. 6 is a view showing a rotating cam. The configurations shown in FIGS. 4 to 6 are examples, and the present invention is not limited to such configurations. 4 to 6, the same parts as those in FIGS. 1 to 3 are denoted by the same reference numerals.

  On the cam surface 74 of the fixed cam 64 fixed to the bearing portions 4 and 6, as shown in FIG. 4, a protrusion 78 of a rotary cam 66 slidably attached to the cam shaft portion 36 of the opening and closing shaft 8, 80 is in contact, and a pressing force is applied between the cam surface 74 and the protrusions 78 and 80 by the restoring force of the coil spring 26 (FIGS. 1 to 3).

As shown in FIGS. 5A, 5B, and 5D, the fixed cam 64 has a flat surface joined to the bearing portions 4 and 6, and the long diameter side of the bearing hole 68. Is set high and the short diameter side is set low. FIG. 5A is a perspective view showing the entire fixed cam 64, FIG. 5B is a perspective view of the fixed cam 64 with the short diameter portion side in the lateral direction, and FIG. 5C. FIG. 5 is a perspective view of the fixed cam 64 shown with the long diameter portion side in the horizontal direction, and FIG. 5D is a side view of the fixed cam 64 shown from the long diameter portion side. In the fixed cam 64, the maximum height h ₁ on the major axis side of the bearing hole 68, the minimum height h ₂ at the edge of the short diameter portion (<h ₁₎ is set, the short diameter side of the bearing hole 68 A recess 92 having a minimum height h ₂ is formed by an inclined surface 94 that rises gently in the direction of the outer edge of the fixed cam 64.

  The rotating cam 66 opposed to the cam surface 74 of the fixed cam 64 has a sliding hole 76 similar to the cross section of the cam shaft portion 36 of the opening / closing shaft 8 as shown in FIGS. As described above, the annular body at the center includes the semi-cylindrical protrusions 78 and 80 having the same top height and different diameters. 6A is a perspective view of the rotating cam 66 viewed from obliquely above the sliding hole 76, and FIG. 6B is a side view of the rotating cam 66. As shown in FIG. 6B, the heights of the tops of the protrusions 78 and 80 are the same. By receiving the pressing force of the coil spring 26 from the back side of the rotating cam 66 as well as the contact between the tops of the protrusions 78 and 80 and the cam surface 74 of the fixed cam 64 ((A) and (C) in FIG. 5). A rotational moment is generated on the rotating cam 66 side.

  Next, the opening / closing operation will be described with reference to FIGS. FIG. 7 is a diagram showing the operation of the stopper mechanism, FIG. 8 is a diagram showing the eccentric rotation operation of the opening and closing shaft, FIG. 9 is a diagram showing the eccentric trajectory by the cam mechanism, and FIG. 10 is the generation of the rotational moment by the cam mechanism. It is a figure for demonstrating. The configurations shown in FIGS. 7 to 10 are examples, and the present invention is not limited to such configurations. 7 to 10, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals.

  The position shown in (A) of FIG. 7 is such that the rotary shaft 12 is maintained in parallel with the fixed portion 28 of the bearing portion 4, and if this position is the opening and closing start point, the position shown in (C) of FIG. The opening / closing end point, and the position shown in FIG. 7B is the intermediate point. When the opening / closing shaft 8 is rotated from the opening / closing start point as indicated by an arrow c, the opening / closing end point shown in FIG. 7 (C) is reached via the intermediate point shown in FIG. 7 (B). In this case, the stopper portion 52 of the stopper mechanism 18 rotates counterclockwise from the position of FIG. 7A around the opening / closing shaft 8 until the stopper piece 56 hits the stopper portion 54 of the fixing portion 28. 8 can be rotated. When the stopper piece 56 hits the stopper portion 54, the rotation of the opening / closing shaft 8 is prevented, and this becomes the opening / closing end point. 7A to 7C show the stopper mechanism 18 on the bearing unit 4 side, the same operation is performed in the stopper mechanism 20 on the bearing unit 6 side.

As the opening / closing shaft 8 rotates, the eccentric cam 42 rotates. In the position shown in FIG. 8A, the cam follower portion 44 is merely in contact with the eccentric cam surface 46 of the eccentric cam 42, and there is no eccentricity of the opening / closing shaft 8. That is, when the center of the opening / closing start point and the opening / closing end point of the eccentric cam 42 is O ₁ and the center of eccentric rotation is O ₂ , the center O ₁ and the eccentric rotation center O ₂ coincide with each other at the opening / closing start point and opening / closing end point. When the angle of the opening / closing shaft 8 is changed in the direction of the arrow c from the opening / closing start point, the eccentric cam surface 46 rises to the cam follower portion 44, and at the position shown in FIG. an eccentric rotational center O ₂ eccentric from the center O ₁ in accordance with R, is the distance ΔX between the center O ₁ and the eccentric rotation center O ₂ occurs.

In this case, when the opening / closing shaft 8 is rotated by 45 degrees from the state shown in FIG. 8A, the cam follower portion 44 has a portion with the maximum radius R _max of the eccentric cam 42 as shown in FIG. reached, in the position shown in FIG. 8 (C), an eccentric rotational center O ₂ eccentric from the center O ₁ in accordance with the maximum radius R _max from the rotation center of the eccentric cam surface 46, the center O ₁ and the eccentric rotation center O _A distance ΔX _max occurs between the _two . That is, this is the maximum eccentric position.

When the opening / closing shaft 8 is rotated from this position in the direction of the arrow c, the position exceeds the position of the maximum radius R _max of the eccentric cam surface 46. At the position shown in FIG. eccentric rotational center O ₂ eccentric from the center O _1, the distance ΔX between the center O ₁ and the eccentric rotation center O ₂ occurs in response to. This is the same position as in FIG.

When the opening / closing shaft 8 is rotated by 90 degrees from the state shown in FIG. 8A, the portion of the eccentric cam 42 having the minimum radius R _min reaches the cam follower portion 44 as shown in FIG. 8E. However, at the position shown in FIG. _8E , the eccentric rotation center O ₂ coincides with the center O ₁ according to the minimum radius R _min, and there is no eccentricity.

In the eccentric rotation from the opening / closing start point (0 degree) to the opening / closing end point (90 degrees), as shown in FIG. 9, the opening / closing start point and the opening / closing end point are changed by the orbital displacement n from the center O ₁ to the eccentric rotation center O ₂ . An eccentric trajectory m having a maximum displacement at the midpoint is obtained. The broken line m _O is a comparative example of the rotation trajectory when there is no eccentricity.

  With regard to the relationship between the eccentric rotation and the cam mechanisms 22 and 24, at the opening and closing start point, as shown in FIG. 10A, the rotating cam 66 receives the restoring force of the coil spring 26 in the compressed state and receives the fixed cam 64. The hatched portions 95 and 96 indicate contact portions. The hatched portion 95 is a contact portion of the protrusion 78 of the rotating cam 66, and the hatched portion 96 is a contact portion of the protrusion 80 of the rotating cam 66. The positions of the hatched portions 95 and 96 are in the middle of the inclined surface 94 from the minimum height portion to the maximum height portion of the cam surface 74.

  When the rotating cam 66 is rotated counterclockwise and the rotating cam 66 reaches the intermediate position (45 degrees) between the opening / closing start point and the opening / closing end point, the rotation cam 66 is compressed as shown in FIG. The coil spring 26 is lifted to the maximum height portion of the cam surface 74 of the fixed cam 64 against the restoring force of the coil spring 26 maintained in the state.

  Further, when the rotating cam 66 is further rotated counterclockwise and the rotating cam 66 reaches the opening / closing end point (position 90 degrees from the opening / closing start point), as shown in FIG. The cam surface 74 reaches the middle of the inclined surface 94 extending from the minimum height portion to the maximum height portion.

  A rotational moment is generated in the rotating cam 66 by the contact between the protrusions 78 and 80 due to the eccentric rotation of the rotating cam 66 and the cam surface 74 of the fixed cam 64 and the restoring force of the coil spring 26. That is, in FIG. 10B, the protrusions 78 and 80 are in contact with the maximum height portion of the cam surface 74, and the rotational moment M is M = 0, whereas in FIG. Since the portions 78 and 80 are in contact with the inclined surface 94 directed from the maximum height portion to the minimum height portion of the cam surface 74, the restoring force of the coil spring 26 is received from the back surface of the rotation cam 66, and the rotation cam 66 10C, and the protrusions 78 and 80 are in contact with the inclined surface 94 from the maximum height portion of the cam surface 74 toward the minimum height portion. Due to the restoring force of the coil spring 26 from the back surface of the cam 66, the rotating cam 66 generates a counterclockwise rotational moment M. That is, due to the rotational moment M, a force (rotational force) is applied at the opening / closing start point to rotate in the opposite direction (clockwise) to the opening / closing end point, and at the opening / closing end point, the force is opposite to the opening / closing start point. A force (rotational force) for rotating in the direction (counterclockwise) acts, and automatic return to the clockwise or counterclockwise direction is possible with the intermediate point in FIG. 10B as the center. .

  As described above, in the hinge device 2, the rotation center of the opening / closing shaft 8 can be displaced by the cam mechanisms 14, 16 according to the rotational position of the opening / closing shaft 8, and the opening / closing range is regulated by the stopper mechanisms 18, 20. In addition, the cam mechanisms 22 and 24, together with the eccentric rotation, can automatically return to the opening / closing start point or the opening / closing end point by a gentle rotation.

[Second Embodiment]

  The second embodiment will be described with reference to FIGS. 11 and 12. 11 and 12 show a device provided with a hinge device, FIG. 11 is a perspective view showing a device at an opening / closing start point, and FIG. 12 is a perspective view showing a device at an opening / closing end point. The configurations shown in FIGS. 11 and 12 are examples, and the present invention is not limited to such configurations. 11 and 12, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals.

  As shown in FIG. 11, the device 100 including the hinge device 2 includes a housing 102 as a first member and a housing 104 as a second member, and the hinge device 2 is provided between the housings 102 and 104. It is connected with. The bearings 4 and 6 of the hinge device 2 are fixed to the housing 102 with fixing screws 106, and the fixing plate 88 of the hinge device 2 is fixed to the housing 104 with fixing screws 108.

  According to such a configuration, as shown in FIG. 11, when the casing 104 of the device 100 is set to the closed position of the opening / closing start point, the opening / closing shaft 8 of the hinge device 2 is centered on the rotation as shown by the arrow Nx in FIG. In this embodiment, as shown by an arrow Ny, the housing 104 can be rotated around the rotation shaft 12 at an open position of 90 degrees that is an opening / closing end point.

  In this case, when the casing 104 of the device 100 is at a position of 45 degrees, which is an intermediate point between the open position and the closed position, the rotational moment M of the hinge device 2 is M = 0 {(B) in FIG. A rotational moment M from the position toward the closed position or the open position is applied to the housing 104, and the housing 104 can be automatically closed to the closed position, or the housing 104 can be automatically opened to the open position.

  Further, since the casing 104 is opened and closed by the eccentric rotation of the hinge device 2, it is possible to perform the gentle eccentric opening and closing at the opening and closing start point and the opening and closing end point with the minimum eccentric position, with the middle point of opening and closing as the maximum eccentric position.

[Third Embodiment]

  FIG. 13 is referred to for the third embodiment. FIG. 13 shows a device provided with a hinge device, FIG. 13A is a perspective view showing the device at the opening / closing start point, and FIG. 13B is an open / closed state between the opening / closing start point and the opening / closing end point. FIG. The configuration shown in FIG. 13 is an example, and the present invention is not limited to such a configuration. In FIG. 13, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals.

  In the device 200 on which the hinge device 2 according to the first embodiment is mounted, the housing 206 that can be housed in the housing portion 204 on the housing 202 side is configured to be openable and closable by the hinge device 2. As described above, since the hinge device 2 can be rotated eccentrically, as shown in FIG. 13A, the hinge device 2 is slightly between the housing 206 and the storage portion 204 when the housing 206 is closed. The only gap 208 is provided.

  Thus, even when the slight gap 208 does not exist between the edge of the housing portion 204 of the housing 202 and the housing 206 is opened from the housing 202, the eccentric rotation of the hinge device 2 is performed. Thus, the housing 206 can escape from the housing 202 by eccentricity and can be opened and closed without causing the two to interfere with each other.

  Further, by using the hinge device 2, the gap 208 between the storage portion 204 of the housing 202 and the edge portion of the housing 206 can be reduced, and entry of dust and the like from the outside can be prevented, and the housing can be prevented. The appearance quality can be improved without exposing the inside of the storage portion 204 of 202.

  The following advantages can be obtained by using the hinge device 2 by configuring the housing 206 side to be a liquid crystal unit member, for example.

  (1) If the bearing hole 68 of the fixed cam 64 is a long-diameter hole having a length corresponding to a predetermined track for controlling the track of the opening / closing shaft 8, for example, the liquid crystal unit member can be opened and closed. .

  (2) Since the cam follower portion 44 is always in contact with the outer periphery of the eccentric cam 42, the rotation center of the opening / closing shaft 8 is eccentric according to the shape of the eccentric cam 42. For example, according to the opening / closing of the liquid crystal unit member Interference between the housing 202 on the main body side and the housing 206 on the liquid crystal unit side can be avoided.

  (3) Since the recess 92 of the fixed cam 64 and the rotating cam 66 are always kept in contact with each other, the rotational displacement associated with opening and closing becomes smooth, and for example, the liquid crystal unit member does not feel uncomfortable.

As described above, the most preferred embodiment of the present invention has been described. However, the present invention is not limited to the above description, and is described in the claims or the best for carrying out the invention. Various modifications and changes can be made by those skilled in the art based on the gist of the invention disclosed in the embodiments, and it goes without saying that such modifications and changes are included in the scope of the present invention.

The present invention is a hinge device and a device provided with the hinge device, which can displace the rotation center of the shaft in accordance with the rotational position of the shaft, and a member fixed to the shaft side and a member fixed to the shaft side Therefore, the degree of freedom of opening and closing between the members can be increased, and interference with the side of the casing member to be opened and closed is highly useful. Moreover, since the width | variety of the space | gap provided between each housing | casing member can be made small and it can arrange | position in the very close state, since the surface of each housing | casing member can be made into the form close | similar to a continuous surface. The appearance quality of the entire device can be improved.

It is a perspective view which shows the hinge apparatus which concerns on 1st Embodiment. It is the front view which cut and showed a part of hinge apparatus. It is a disassembled perspective view of a hinge apparatus. It is a figure which shows the cam mechanism shown except a coil spring. It is a figure which shows a fixed cam. It is a figure which shows a rotation cam. It is a figure which shows operation | movement of a stopper mechanism. It is a figure which shows the eccentric rotation operation | movement of an opening-and-closing axis | shaft. It is a figure which shows the eccentric track | orbit by a cam mechanism. It is a figure for demonstrating the production | generation of the rotational moment by a cam mechanism. It is a perspective view which shows the apparatus in an opening-and-closing starting point. It is a perspective view which shows the apparatus in an open / close end point. It is a figure which shows the apparatus provided with the hinge apparatus. It is a figure which shows the apparatus using the conventional hinge apparatus.

Explanation of symbols

2 Hinge device 4, 6 Bearing portion 8 Opening and closing shaft 14, 16 First cam mechanism 22, 24 Second cam mechanism 26 Coil spring 42 Eccentric cam 44 Cam follower portion 46 Eccentric cam surface 64 Fixed cam 66 Rotating cam 68 Bearing hole 74 Cam face 78, 80 Projection

Claims (5)

A bearing hole that rotatably supports the shaft, and a bearing portion that supports the shaft eccentrically by the long diameter portion;
A first cam mechanism that engages a cam follower with an eccentric cam having an eccentric cam surface, and causes the shaft to be eccentric by the long diameter portion of the bearing hole in accordance with a rotation angle of the shaft;
A protrusion on a rotating cam that rotates together with the shaft is engaged with the cam surface of a fixed cam having cam surfaces of different heights, and a restoring force of a spring installed on the shaft is applied to the cam surface and the protrusion. A second cam mechanism acting between the two parts,
A hinge device comprising: The hinge device according to claim 1, wherein
A hinge device comprising a stopper portion attached to the shaft, wherein the rotation range of the shaft is restricted by the stopper portion. The hinge device according to claim 1, wherein
A hinge device comprising a stopper that restricts the rotational range of the shaft to the eccentric cam.   The first member and the second member are connected by a hinge device, and the first device and the second member can be opened and closed by the hinge device, and the first member or the second member can be opened and closed. A device provided with a hinge device, characterized in that the center of rotation of the member is eccentric according to the rotation angle and the eccentric direction is regulated by the long diameter portion of the bearing portion.   A device provided with the hinge device according to claim 4, comprising the hinge device according to claim 1, 2 or 3.

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