JP5331850B2 - Hinge device and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a notebook personal computer using a hinge device surely maintaining a closed state of a lid body relative to a personal computer body. <P>SOLUTION: The notebook personal computer includes the personal computer body, the lid body covering an upper surface of the personal computer body, and one pair of the hinge devices disposed on the same axial line to support the lid body to be openable/closable relative to the personal computer body. The lid body is attached to the one pair of hinge devices so as to close the lid body with the phase of a rotating cam relative to a fixed cam disposed on the axial line of the left side hinge device A and the phase of the rotating cam relative to a fixed cam disposed on the axial line of the right side hinge device B shifted, and between a position where open/close load on one hinge device is maximized and a position where open/close load on the other hinge device is maximized. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

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

  FIG. 7 is an exploded perspective view of a hinge device used in an electronic device such as a notebook personal computer. As shown in FIG. 7, the hinge device 4 includes a hinge main body 41 fixed to the electronic device main body, and a hinge shaft 42 fixed to the hinge main body 41 and extending to the side. The hinge shaft 42 includes a base portion 42a, a flange portion 42b serving as a boundary with the base portion 42a, and a shaft portion 42c extending from the flange portion 42b to the tip. Further, the flange portion side of the shaft portion 42c is formed so that the cross section is a perfect circle, and this portion is fitted into the outer stay 43, the inner stay 44, and the rotating cam 45, and the outer stay 43, the inner stay 44, and the rotation. The cam 45 rotates as a unit. On the other hand, a pair of flat surfaces 42c1 are provided on the distal end side of the shaft portion 42c, and the cross section thereof is formed so as to form an irregular shape in which both sides of a perfect circle are cut out. This portion is fitted into a fixed cam 46 and a plurality of disc springs 47, and the fixed cam 46 is fixed in the circumferential direction of the hinge shaft 42. A male screw 42c2 is formed on the tip side of the shaft portion 42c. A female screw 48a formed on the nut 48 is screwed onto the male screw 42c2, and the above-described outer stay 43, inner stay 44, rotating cam 45, fixed cam 46, and a plurality of disc springs 47 are attached. A lid is attached to the outer stay 43 and the inner stay 44.

  The hinge device 4 described above has characteristics as shown in FIG. 8 between the hinge opening / closing angle and the opening / closing load (torque). That is, when the hinge opening / closing angle is gradually opened / closed from the case where the hinge opening / closing angle is 0, the opening / closing load increases rapidly and reaches a maximum value when the hinge opening / closing angle is around 10 degrees. Thereafter, the opening / closing load decreases rapidly and becomes constant when the hinge opening / closing angle exceeds about 20 degrees. As shown in FIG. 9, the hinge device 4 having such characteristics has an electronic switching load so that an opening / closing load acts on the electronic device main body with the lid closed (the opening / closing angle of the lid is 0 degree). It attaches between an apparatus main body and a cover body (for example, refer patent documents 1-3).

JP 2008-298279 A JP 2004-332874 A JP-A-2005-140152

  However, as shown in FIG. 8, when the hinge device is opened and closed, the opening and closing load of the hinge device increases rapidly, reaches a maximum value, and then decreases rapidly. In addition, since the opening / closing load characteristics of the hinge device vary greatly, it is difficult to set the opening / closing load characteristics to operate even if the opening / closing load characteristics are controlled within a predetermined range, and the lid body is not attached to the electronic device body. It is difficult to reliably maintain the closed state.

  This invention is made in view of the above, Comprising: It provides the electronic device using the hinge apparatus and hinge apparatus which can maintain the state which the cover body obstruct | occluded with respect to the electronic device main body reliably. Objective.

  In order to solve the above-described problems and achieve the object, the present invention provides a hinge device including a pair of hinges that are provided on the same axis and support the electronic device main body so that the lid can be opened and closed. The lid is attached to the pair of hinges in a state where the phase of the rotating cam with respect to the fixed cam provided on one hinge is shifted from the phase of the rotating cam with respect to the fixed cam provided on the other hinge.

  Further, according to the present invention, in the above-described invention, the pair of the pair is configured so as to be closed between a position where the switching load generated in the one hinge is maximum and a position where the switching load generated in the other hinge is maximum. A lid is attached to the hinge.

  In addition, the present invention provides an electronic device main body, a lid that covers the upper surface of the electronic device main body, and a pair of hinge devices that are provided on the same axis and that support the lid so as to be openable and closable with respect to the electronic device main body. In an electronic device comprising: a state in which the phase of the rotating cam with respect to the fixed cam provided on the axis of one hinge device is shifted from the phase of the rotating cam with respect to the fixed cam provided on the axis of the other hinge device The lid is attached to the pair of hinge devices.

  In the present invention, the lid may be closed between a position where the opening / closing load of the one hinge device is maximized and a position where the opening / closing load of the other hinge device is maximized. Further, the lid is attached to the pair of hinge devices.

  In the hinge device according to the present invention, the lid is attached to the pair of hinges in a state where the phase of the rotating cam with respect to the fixed cam provided on one hinge is shifted from the phase of the rotating cam with respect to the fixed cam provided on the other hinge. The peak width of the opening / closing load generated in the lid is widened. Since the lid is attached to the pair of hinges so as to close between the position where the opening / closing load generated in one hinge is maximized and the position where the opening / closing load generated in the other hinge is maximized, The state where the lid is closed with respect to the device main body can be reliably maintained.

  In the electronic device according to the present invention, the phase of the rotating cam with respect to the fixed cam provided on the axis of one hinge device is shifted from the phase of the rotating cam with respect to the fixed cam provided on the axis of the other hinge device. Thus, since the lid is attached to the pair of hinge devices, the peak width of the opening / closing load generated in the lid is widened. Then, the lid body is attached to the pair of hinge devices so that the lid body is closed between the position where the opening / closing load of one hinge device is maximum and the position where the opening / closing load generated in the other hinge device is maximum. Since it attached, the state which the cover body closed with respect to the electronic device main body can be maintained reliably.

FIG. 1 is a perspective view showing a notebook personal computer according to an embodiment of the present invention. FIG. 2 is a diagram showing a state in which the lid of the notebook computer shown in FIG. 1 is opened. 3 is an exploded perspective view of the hinge device shown in FIG. FIG. 4 is an exploded view for explaining the relationship between the fixed cam and the rotating cam shown in FIG. FIG. 5 is an assembly diagram illustrating a state where the fixed cam and the rotating cam illustrated in FIG. 3 are engaged with each other. FIG. 6 is a diagram illustrating the relationship between the opening / closing angle of the lid and the opening / closing torque. FIG. 7 is an exploded perspective view of the hinge device. FIG. 8 is a diagram illustrating the relationship between the opening / closing angle of the hinge device and the opening / closing torque. FIG. 9 is a diagram illustrating the relationship between the opening / closing angle of the lid and the opening / closing torque.

  Embodiments of a hinge device and an electronic apparatus using the hinge device according to the present invention will be described below in detail with reference to the drawings. Although a notebook personal computer will be described as an example here, the present invention is not limited to this embodiment.

  FIG. 1 is a perspective view showing a notebook computer according to an embodiment of the present invention, and FIG. 2 is a diagram showing a state in which a lid of the notebook computer shown in FIG. 1 is opened. FIG. 3 is an exploded perspective view of the hinge device shown in FIG.

  As shown in FIG. 1, a notebook personal computer 1 according to an embodiment of the present invention is provided between a personal computer main body 2, a lid 3 that covers the upper surface of the personal computer main body 2, and between the personal computer main body 2 and the lid 3. And a pair of hinge devices 4 for supporting the lid 3 so as to be freely opened and closed with respect to the personal computer main body 2. Thereby, the notebook computer 1 can be carried with the lid 3 closed with respect to the personal computer main body 2, and can be used with the lid 3 opened with respect to the personal computer main body 2.

  Further, input devices such as operation keys 21 and a touch pad 22 for inputting various information are provided on the upper surface of the personal computer main body 2. These input devices are covered with the lid 3 when the lid 3 is closed with respect to the personal computer main body 2.

  Further, a display 31 for displaying and outputting various information is provided on the front surface of the lid 3. The display 31 is covered by the personal computer main body 2 when the lid 3 is closed with respect to the personal computer main body 2.

  As described above, the hinge device 4 is provided between the personal computer main body 2 and the lid 3 and supports the personal computer main body 2 so that the lid 3 can be opened and closed. Then, maintaining the closed state of the lid 3 with respect to the personal computer main body 2, holding the lid 3 in that position when the lid 3 is opened to an arbitrary position with respect to the personal computer main body 2, Is required. In addition, in order to improve the opening operability of the lid 3 with respect to the personal computer main body 2, it is also required that the lid 3 be opened with a slight force.

  As shown in FIGS. 2 and 3, the pair of hinge devices 4 are paired on the left and right sides, have a rotation axis on the same axis, and open and close the lid 3 with respect to the personal computer main body 2. But it wo n’t itch or twist.

  As shown in FIGS. 2 and 3, the hinge device 4 includes a hinge main body 41 fixed to the personal computer main body 2 and a hinge shaft 42 fixed to the hinge main body 41 and extending to the side. 2 and 3, the axis of the hinge shaft 42 of the hinge device 4 (A) on the left side and the axis of the hinge shaft 42 of the hinge device 4 (B) on the right side are positioned on the same axis. The hinge main body 41 of the hinge device 4 (A) on the left side and the hinge main body 41 of the hinge device 4 (B) on the right side are attached.

  The hinge shaft 42 has a base portion 42a, a flange portion 42b serving as a boundary with the base portion 42a, and a shaft portion 42c extending from the flange portion 42b to the tip. These base part 42a, flange part 42b, and shaft part 42c are formed in a cylindrical shape having the same center line. Further, the flange portion (base end) side of the shaft portion 42c is formed so that the cross section is a perfect circle, and this portion is fitted into the outer stay 43, the inner stay 44, and the rotating cam 45, and the outer stay 43, inner side The stay 44 and the rotating cam 45 rotate together. A pair of flat surfaces 42c1 are provided on the distal end side of the shaft portion 42c, and the cross section thereof is formed so as to have a modified shape in which both sides of a perfect circle are cut out. This portion is fitted into a fixed cam 46 and a plurality of disc springs 47, and the fixed cam 46 is fixed in the circumferential direction of the hinge shaft 42.

  A male screw 42c2 is formed on the tip side of the shaft portion 42c. A female screw 48a formed on the nut 48 is screwed onto the male screw 42c2, and the above-described outer stay 43, inner stay 44, rotating cam 45, fixed cam 46, and a plurality of disc springs 47 are attached.

  The outer stay 43 and the inner stay 44 described above are for attaching the lid 3. The outer stay 43 is formed by bending a plate-like body. The outer stay 43 extends from the shaft hole 43a through which the hinge shaft 42 is inserted to the outside in the diameter direction of the shaft hole 43a, and is then bent 90 degrees to be outside the lid body 3. Extends towards. Further, the front side of the tip is bent 90 degrees to form the attachment portion 43b. The attachment portion 43b is provided with a through hole 43b1 that overlaps with the screw hole 3a provided in the lid 3, and a small screw (not shown) inserted through the through hole 43b1 is screwed into the screw hole 3a, so that the outer side The lid 3 is attached to the stay 43.

  The inner stay 44 is formed by bending a plate-like body in the same manner as the outer stay 43. The inner stay 44 extends from the shaft hole 44a passing through the hinge shaft 42 to the outside in the diameter direction of the shaft hole 44a, and then bent 90 degrees. And extends toward the inside of the lid 3. Further, the front side of the tip is bent 90 degrees to form the attachment portion 44b. The attachment portion 44b is provided with a through hole 44b1 that overlaps with the screw hole 3a provided in the lid 3, and a small screw (not shown) inserted through the through hole 44b1 is screwed into the screw hole 3a, so that the inner side The lid 3 is attached to the stay 44.

  As shown in FIG. 3, the rotating cam 45 and the fixed cam 46 have a desired opening / closing load (a desired opening / closing load) between the personal computer main body 2 to which the hinge main body 41 is attached and the lid body 3 to which the outer stay 43 and the inner stay 44 are attached. Torque) is generated, and the closed state of the lid body 3 with respect to the personal computer main body 2 is maintained by the opening / closing load, and the lid body 3 opened to an arbitrary position with respect to the personal computer main body 2 is held at that position. The

  As described above, the rotary cam 45 is fitted to the shaft portion 42c of the hinge shaft 42 and is rotatably supported with respect to the hinge shaft 42. The rotary cam 45 is formed with a shaft hole 45a into which the shaft portion 42c of the hinge shaft 42 is fitted. The shaft hole 45a is formed with substantially the same diameter as the shaft portion 42c of the hinge shaft 42, and the rotary cam 45 can smoothly rotate around the shaft portion 42c of the hinge shaft 42.

  Further, the rotary cam 45 includes a lever portion 45b extending outward in the diameter direction of the shaft hole 43a. The lever portion 45b is a portion for integrating the outer stay 43 and the inner stay 44 with the rotating cam 45, and the outer stay 43 and the inner stay 44 are integrated with the rotating cam 45 by the lever portion 45b. In addition, the structure to integrate can employ | adopt pin connection, welding, and various other things, for example.

  As shown in FIG. 4, a pair of recesses 45 c and 45 d are provided on the surface of the rotating cam 45 facing the fixed cam 46. The recesses 45c and 45d are for generating a desired torque with the fixed cam 46. One recess 45c is provided on the inner peripheral side near the shaft hole 45a, and the other recess 45d is a shaft hole. Provided on the outer peripheral side away from 45a. The one recess 45c and the other recess 45d face each other with the shaft hole 45a as a boundary. Moreover, one dent 45c and the other dent 45d are each formed in a fan shape, and both side edges thereof are inclined obliquely.

  As described above, the fixed cam 46 is fitted in the tip side of the hinge shaft 42 and a portion provided with the pair of flat surfaces 42 c 1, and the fixed cam 46 is fixed in the circumferential direction of the hinge shaft 42. The fixed cam 46 is formed with a deformed hole 46a into which a portion provided with a pair of flat surfaces 42c1 is fitted on the distal end side of the hinge shaft 42. The deformed hole 46a is formed in substantially the same shape as the cross section of the tip side of the hinge shaft 42 and the pair of flat surfaces 42c1 provided, and the fixed cam 46 is fixed in the circumferential direction of the hinge shaft 42.

  Further, as shown in FIG. 4, the surface of the fixed cam 46 facing the rotating cam 45 is provided with protrusions 46c and 46d which are paired with the recesses 45c and 45d provided in the rotating cam 45 and fit into the recesses 45c and 45d. is there. One protrusion 46c is provided on the inner peripheral side near the modified hole 46a, and the other protrusion 46d is provided on the outer peripheral side away from the modified hole 46a. Similarly to the recesses 45c and 45d formed in the rotating cam 45, the one protrusion 46c and the other protrusion 46d face each other with the deformed hole 46a as a boundary. Further, the one protrusion 46c and the other protrusion 46d are each formed in a fan shape, and both side edges thereof are inclined obliquely.

  The rotating cam 45 and the fixed cam 46 described above are attached in a combined state as shown in FIG. And the convex 46c provided in the fixed cam 46 fits into the recess 45c provided in the rotating cam 45, and the convex 45d provided in the fixed cam 46 fits into the concave 45d provided in the rotating cam 45. At this time, the bottom surface of the recess 45c and the top surface of the projection 46c do not contact each other, and the bottom surface of the recess 45d and the top surface of the projection 46d do not contact each other. When the rotating cam 45 is rotated with respect to the fixed cam 46, the recesses 45c and the protrusions 46c, the recesses 45d and the protrusions 46d are engaged, and an opening / closing load (torque) is generated. When the rotating cam 45 is further rotated from this state, the opening / closing load gradually increases. When the rotating cam 45 is further rotated, the protrusion 46c gets over the recess 46c, and the protrusion 46d gets over the recess 46d. Then, the switching load decreases rapidly and eventually becomes constant. In this state, the upper surfaces of the protrusions 46c and 46d of the fixed cam 46 and the upper surface of the rotating cam 45 are in sliding contact.

  By the way, the notebook type personal computer 1 according to the embodiment of the present invention is rotated with respect to the fixed cam 46 in the hinge device 4 (A) on the left side and the hinge device 4 (B) on the right side in FIGS. It is characterized in that the phase of the cam 45 is different. That is, as shown in FIG. 6, in FIGS. 1 to 3, the hinge angle at which the opening / closing load (maximum value) occurs in the hinge device 4 (A) on the left side, and the opening / closing load in the hinge device 4 (B) on the right side. The opening / closing load (maximum value) of the lid 3 has a width (peak width) by making the hinge angle (maximum value) at which the above occurs differ. This is because the opening / closing load of the lid 3 is a combined load of the opening / closing load of the hinge device 4 (A) on the left side and the opening / closing load of the hinge device 4 (B) on the right side. The load characteristic curve before and after the maximum value of the switching load in the device 4 is regarded as a sine curve, and the phase is shifted by approximately one half (for example, about 10 degrees to 12 degrees), so that the peak width of the switching load of the lid 3 is increased. To have. The lid 3 is set to close within the peak width of the opening / closing load of the lid 3. Specifically, the hinge device 4 on the left side in FIGS. 1 to 3 is such that the opening / closing load is maximized at a position where the lid 2 is further shifted from the closed position by an angle of 6 degrees (−6 degrees) in the closed direction. While the phase of (A) is set, the hinge on the right side in FIGS. 1 to 3 is such that the opening / closing load is maximized at a position where the lid body 2 is shifted from the opening / closing position by an angle of 6 degrees (+6 degrees) in the opening direction. The phase of the device 4 (B) is set. Accordingly, in FIGS. 1 to 3, the hinge device 4 (A) on the left side and the hinge device 4 (B) on the right side have a phase difference of 12 degrees.

  Further, the disc spring 47 described above urges the fixed cam 46 so that the fixed cam 46 comes into close contact with the rotating cam 45. As a result, the fixed cam 46 comes into close contact with the rotating cam 45, and an opening / closing load is generated between the rotating cam 45 and the fixed cam 46.

  The above-described notebook personal computer 1 according to the embodiment of the present invention is shown in FIGS. 1 to 3 in which the left side hinge device 4 (A) and the right side hinge device 4 (B) rotate with respect to the solid cam 46. Since the cam 45 has a different phase, the opening / closing load of the lid body 3 has a peak width, and the lid body 3 is set to be closed with respect to the personal computer main body 2 within the range of the peak width. The state in which the lid 3 is closed with respect to the personal computer main body 2 can be reliably maintained, and when the lid 3 is opened with respect to the personal computer main body 2, the lid 3 is held at that position. On the other hand, the opening operability of the lid 3 with respect to the personal computer main body 2 is not impaired.

  In the hinge device 4 according to the above-described embodiment, the rotating cam 45 is provided with the recesses 45c and 45d, and the fixed cam 46 is provided with the protrusions 46c and 46d. A recess may be provided.

1 Notebook PC (electronic equipment)
2 PC body 21 Operation keys 22 Touch pad 3 Lid 3a Screw hole 31 Display 4 Hinge device (hinge)
41 Hinge body 42 Hinge shaft 42a Base portion 42b Flange portion 42c Shaft portion 42c1 Flat surface 42c2 Male screw 43 Outer stay 43a Shaft hole 43b Mounting portion 43b1 Through hole 44 Inner stay 44a Shaft hole 44b Mounting portion 44b1 Through hole 45 Rotary cam 45 45b Lever portion 45c, 45d Recess 46 Fixed cam 46a Deformed hole 46c, 46d Convex 47 Belleville spring 48 Nut 48a Female screw A Hinge device on the left side B Hinge device on the right side

Claims (4)

In a hinge device provided with a pair of hinges that are provided on the same axis and support the electronic device main body so that the lid can be opened and closed,
A hinge device, wherein a lid is attached to the pair of hinges in a state where a phase of a rotating cam with respect to a fixed cam provided on one hinge is shifted from a phase of the rotating cam with respect to a fixed cam provided on the other hinge.   A lid is attached to the pair of hinges so as to be closed between a position where the opening / closing load generated in the one hinge is maximized and a position where the opening / closing load generated in the other hinge is maximized. The hinge device according to claim 1, wherein the hinge device is characterized in that: An electronic device comprising: an electronic device main body; a lid that covers an upper surface of the electronic device main body; and a pair of hinge devices that are provided on the same axis and support the lid body to be openable and closable with respect to the electronic device main body In
In the state in which the phase of the rotating cam with respect to the fixed cam provided on the axis of one hinge device is shifted from the phase of the rotating cam with respect to the fixed cam provided on the axis of the other hinge device, the pair of hinge devices An electronic apparatus having the lid attached thereto.   The lid is attached to the pair of hinge devices so that the lid is closed between a position where the opening / closing load of the one hinge device is maximized and a position where the opening / closing load of the other hinge device is maximized. The electronic apparatus according to claim 3, wherein a body is attached.

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