JP2014062644A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a first housing and a second housing to be opened or closed by a range of 360 degree, interference of housings themselves to be prevented when they show oscillation and further enable the housings to be approach to each other when they are opened approximately by 180 degree.SOLUTION: An electronic apparatus according to the present invention comprises: a first housing 101 and a second housing 102 that can be folded within a range of angle 360 degree by a hinge mechanism 50. The hinge mechanism comprises: a first slide shaft 14 moved along a first cam face, a second slide shaft 16, a third slide shaft 34 moved along a second cam face, a fourth slide shaft 36, a cam plate 1 formed with the first cam face and the second cam face, folding operation cooperative mechanisms 51, 52 for cooperatively operating an oscillation operation of the first housing 101 and an oscillation operation of the second housing 102, and a pre-load applying mechanism 53 in which the second slide shaft and the fourth slide shaft always apply a load against the cam plate.

Description

  The present invention provides a parallel biaxial hinge device capable of a 360-degree swinging motion in an electronic device having two housings, and improves the degree of freedom in which the first housing and the second housing can be taken. The present invention relates to an openable electronic device that improves the usability of the user.

  In general, it is preferable in terms of visibility and operability that a portable information terminal is small when carried and is large when used. For this reason, there are known a type in which two casings are enlarged by sliding them in use, a type in which two casings are connected by hinges so that they can be opened and closed, and a type in which they are opened in use. What is connected by this hinge to open and close, so-called foldable (or foldable), is provided with one shaft body, parallel with two shaft bodies provided in parallel. One having a biaxial hinge device is known. The parallel biaxial hinge mechanism is preferred in that there is no portion where the hinge mechanism protrudes from the housing.

There are many parallel biaxial hinge mechanisms in which the casings are opened and closed within a range of 180 degrees, but those capable of opening and closing within a range of 360 degrees are also known.
For example, even when backlash exists between the tooth surfaces of the first gear and the second gear, when the backlash is located at the predetermined first position, rattling occurs between the first hinge member and the second hinge member. A technique related to a biaxial hinge device that can prevent the occurrence of the problem is known (for example, see Patent Document 1).

  In addition, the first rotation shaft portion and the second rotation shaft portion are connected by an interlocking link portion, and the second rotation portion is configured to rotate in conjunction with transmission by the rotation of the first rotation portion. There is also known a technique related to a hinge device in which an interlocking link portion is disposed at an axially extended position on the outer side in the axial direction from one end portion of the first rotation shaft portion and the second rotation shaft portion, and an electronic device using the hinge device. (For example, refer to Patent Document 2). Furthermore, a fixed body connected to the fixed holder and formed with a fixed gear; a movable body connected to the movable holder and formed with a movable gear; a conversion gear meshed with the fixed gear; and the conversion gear and the movable gear. It consists of a meshing relay gear and a lock plate on which the gears are mounted. When the movable holder is opened at a predetermined angle with respect to the fixed holder, it comes into contact with a locking portion formed on the fixed body or the fixed holder. A technique related to an opening / closing device in which an engaging portion is provided on the lock plate and the conversion gear is movably formed is also known (see, for example, Patent Document 3).

JP 2005-207465 A Japanese Patent Laid-Open No. 2008-075747 JP 2008-144962 A

However, in the casings of the techniques of Patent Documents 1 to 3, in order to prevent the corners on the inner side from folding from interfering with the corners during the opening / closing operation, the inner corners have a relief shape (for example, the corners have a predetermined shape). R shape with rounded radii) is formed. For this reason, the technology has not been able to meet the demand to increase the size of the display screen while keeping the device downsized. In other words, in a foldable electronic device capable of opening and closing 360 degrees, when the casings are opened 180 degrees, the display screens of the pair of casings form a flat display screen, The configuration cannot be increased in size.
Thus, the conventional 360-degree open / close electronic device still has room for improvement.

  On the other hand, the applicant can prevent interference between the housings when the first housing and the second housing are swinging in an electronic device in which the pair of housings can be folded within 180 degrees. Japanese Patent Application Laid-Open No. 2012-251572, etc. proposes an electronic device capable of bringing the casings close to each other when the first casing and the second casing are opened 180 degrees. In addition, even in an electronic device in which a pair of housings can be opened and closed 360 degrees, it is desired to develop an electronic device that can bring the housings close together when the first housing and the second housing are opened 180 degrees. Has been.

The present invention has been made to solve the above-described problems, and achieves the following object.
An object of the present invention is to prevent interference between a pair of casings at the time of opening and closing operations in an electronic apparatus including a hinge device that allows a pair of casings to open and close 360 degrees. An object of the present invention is to provide an electronic device capable of bringing a pair of casings as close as possible to each other when they are open.

  Another object of the present invention is to synchronize and synchronize the opening and closing operations of a pair of housings and prevent rattling when the pair of housings are equipped with a hinge device that can open and close 360 degrees. An object of the present invention is to provide an electronic device that can be used.

In order to achieve the above object, the present invention employs the following means.
The electronic device of the present invention 1
The first housing with built-in electronic components and the hinge mechanism can be folded within an angle of 360 degrees relative to the folding center line, together with the swing of the first housing, and the built-in electronic components In the electronic device including the second housing, the hinge mechanism is disposed on a side surface of the first housing and moves along the first cam surface, and the first slide shaft and the center. A second slide shaft that is arranged so that the lines are parallel to each other and moves along the first cam surface, and a third slide that is arranged on the side surface of the first housing and moves along the second cam surface A shaft, a fourth slide shaft arranged so that the center line of the third slide shaft and the center line are parallel to each other, and moving along the second cam surface; and a substantially rectangular plate, which is a cam groove. The first cam surface and the second cam which is a cam groove. A cam plate formed at a position symmetrical with respect to the folding center line, a swing operation of the first housing, and a swing operation of the second housing. When a folding operation interlocking mechanism and the opening and closing operations of the first housing and the second housing are performed, a predetermined load is always applied in the axial direction of the first slide shaft and the third slide shaft. A preload applying mechanism, wherein the first cam surface is a first cam groove that is a through groove for guiding the first slide shaft, and a concave groove for guiding the second slide shaft. The second cam surface is a third cam groove that is a through groove for guiding the third slide shaft, and a fourth groove that is a concave groove for guiding the fourth slide shaft. It consists of a cam groove.

The electronic device according to the second aspect of the present invention is the electronic apparatus according to the first aspect of the present invention.
The second cam groove and the fourth cam groove are V-shaped cam grooves formed in a V shape or a substantially V shape in which a V-shaped tip faces the folding center line and faces each other, The first cam groove is a cam groove that has a groove width for guiding the first slide shaft in the center of the V-shape of the second cam groove, and is formed in a linear shape and / or a curved shape. The third cam groove has a groove width for guiding the third slide shaft in the center of the V-shape of the fourth cam groove, and is formed in a straight line and / or a curved line. It is a groove.

The electronic device of the third aspect of the present invention is the second aspect of the present invention.
In the second cam groove, one cam groove portion formed in a linear shape and / or a curved shape of the V-shaped cam groove has one surface of the first housing and one surface of the second housing. When the first folding storage position folded so as to face each other and the first housing and the second housing swing between an open position opened 180 degrees or substantially 180 degrees, 2 is a portion for guiding the slide shaft, and the other cam groove portion formed in a linear shape and / or a curved shape of the V-shaped cam groove is connected to the other surface of the first housing and the second housing. A portion for guiding the second slide shaft when swinging between the second folding storage position folded so as to face the other surface of the body and the open position; The cam groove is one cam groove portion formed in a linear shape and / or a curved shape of the substantially V-shaped cam groove. And a portion for guiding the fourth slide shaft when swinging between the first folding position and the opening position, and is formed in a linear and / or curved shape of the substantially V-shaped cam groove. The other cam groove portion is a portion for guiding the fourth slide shaft when swinging between the second folding position and the opening position.

The electronic device of the fourth aspect of the present invention is the first to third aspects of the present invention.
The preload applying mechanism is characterized in that the second slide shaft and the fourth slide shaft always apply a load in a direction in which the cam plate is pressed against the cam plate.

The electronic device of the fifth aspect of the present invention is the fourth aspect of the present invention.
The preload applying mechanism includes a first urging member for urging the end surface of the second slide shaft with a predetermined urging force on the bottom surface of the concave groove of the second cam groove, and the fourth cam groove. A second urging member for urging the end surface of the fourth slide shaft with a predetermined urging force is provided on the bottom surface of the concave groove.

The electronic device of the sixth aspect of the present invention is the fifth aspect of the present invention.
When the first casing and the second casing are opened and closed at a predetermined position on the bottom surface of the concave groove, the second slide shaft comes into contact with the second cam groove to feel a click. A first click feeling generating portion for generating the first housing is formed, and the first housing and the second housing are opened and closed at a predetermined position on a bottom surface of the concave groove in the fourth cam groove. In this case, a second click feeling generating portion for generating a click feeling by contacting the fourth slide shaft is formed.

The electronic device of the present invention 7 is the present invention 1, wherein
The second slide shaft is provided integrally with a first cam follower connected to the first slide shaft, and the fourth slide shaft is a second cam connected to the third slide shaft. The preload applying mechanism is provided integrally with the driven body, and the preload applying mechanism is configured to apply the first slide shaft and the second cam driven body to the first cam driven body and the second cam driven body by a biasing force of a biasing member. A load is applied in the axial direction of the three slide shafts.

The electronic device of the present invention 8 is the electronic device according to the present invention 7,
The first cam follower is formed with a first convex portion formed so as to protrude on the opposite side of the direction in which the second slide shaft protrudes, and the second cam follower includes the first cam follower. A second convex portion is formed so as to protrude on the opposite side of the direction in which the four slide shafts protrude, and is provided so as to be movable back and forth in the axial direction of the first slide shaft and the third slide shaft; A movable cam plate having a first end surface cam formed with a cam surface that contacts the first convex portion, and a second end surface cam formed with a cam surface that contacts the second convex portion; The first convex portion and the inclined surface formed at a predetermined position of the first end face cam engage with each other, and the inclined surface formed at the predetermined position of the second convex portion and the second end face cam. Engaging one surface of the first housing and one surface of the second housing. In the first folding storage position folded so as to face each other, or in the second folding storage position folded so that the other surface of the first housing and the other surface of the second housing face each other The housing is provided with a housing folding holding mechanism for holding the folded state.

The electronic apparatus according to the ninth aspect of the present invention includes the first to eighth aspects of the present invention,
In the folding operation interlocking mechanism, in the first slide shaft and the third slide shaft, one of the first slide shaft or the third slide shaft extends from the first cam groove or the third cam groove. A first fold for moving in the direction in which the third cam groove or the first cam groove extends in conjunction with the other of the third slide shaft or the first slide shaft when moved in the direction of movement. When one of the operation interlocking mechanism and the first slide shaft or the third slide shaft swings in the direction around the axis center line, the other of the third slide axis or the first slide shaft is moved to the axis center line. And a second folding operation interlocking mechanism that swings in an interlocking manner.

The electronic device according to the tenth aspect of the present invention is the electronic apparatus according to the ninth aspect,
The first folding operation interlocking mechanism includes a link shaft plate swingably provided on a main body of the hinge mechanism, a first link plate provided between the first slide shaft and the link shaft plate, The interlocking mechanism is interlocked by a link mechanism having a second link plate provided between the third slide shaft and the link shaft plate, and the second folding operation interlocking mechanism is rotatably provided on the main body. A pair of synchronization gears, one synchronization cam provided on the first slide shaft and engaged with an engagement portion formed on one synchronization gear of the pair of synchronization gears, and the third slide shaft It is an interlocking mechanism provided with the other synchronous cam engaged with the engaging part formed in the other synchronous gear of said pair of synchronous gear.

  The electronic device according to the present invention is a foldable electronic device including a parallel biaxial hinge device, wherein the first housing and the second housing are closed so that one surface faces each other. 360 ”in the“ position state ”, the“ first folding state in which the first housing and the second housing are opened approximately 180 degrees ”, and the“ second folding storage position state ”in which the other surface is opposed to each other. Opening and closing operations can be performed over an angle of degrees. In addition, the electronic device can swing in conjunction with the swing operation of the first housing and the swing operation of the second housing during the opening / closing operation.

  Further, when the electronic device is opened / closed, the first housing and the second housing are closest to each other in the “approximately 180 degrees open state”, and the first housing and the second housing are in the other opening / closing positions. The housings can be moved away from each other to prevent interference between the housings. In other words, in the “approximately 180 degree open state”, the casings can be brought as close as possible, and the display screen is integrated and flush with an electronic device in which the display screens are provided in both casings. A large display screen can be formed. In addition, the first housing and the second housing do not interfere with the corners of the first housing and the corners of the second housing when the opening / closing operation is performed. It is not necessary to provide (the round shape formed at the corner), and the display screen is closer.

  In addition, the electronic device includes a folding operation interlocking mechanism and a preload applying mechanism, and the opening / closing operation of the pair of housings is a synchronized interlocking operation and can prevent rattling when the opening / closing operation is performed. That is, this electronic device has a smooth opening and closing operation, high reliability, and a reduction in the size of the hinge mechanism. Moreover, the user who operates this electronic device can feel a click feeling at a desired folding position, and the touch when the electronic device is opened and closed can be improved. In this electronic apparatus, the degree of freedom of the form in which the first casing and the second casing can be improved is improved, and the usability of the user can be improved.

FIG. 1 is an exploded view showing a hinge mechanism in an electronic apparatus according to an embodiment of the present invention. 2A and 2B are component diagrams showing a cam plate of the hinge mechanism, wherein FIG. 2A is a front view as viewed from the direction of arrow A in FIG. 1, and FIG. 2B is a cross-section taken along line BB in FIG. FIG. FIGS. 3A and 3B are views for explaining the relationship between the opening / closing operation of the housing (mounting member) and the cam surface-slide shaft, where FIG. 3A is one folding storage position state, and FIG. The angle state, (c) shows an open state of about 180 degrees, (d) shows the other intermediate angle state, and (e) shows the other folded storage position state. FIG. 4 is an explanatory diagram showing an enlarged relationship between the cam surface and the first slide shaft, the second slide shaft, the third slide shaft, and the fourth slide shaft, and FIGS. The relationship in the state is shown. FIG. 5 is an explanatory diagram showing an enlarged relationship between the cam surface and the first slide shaft, the second slide shaft, the third slide shaft, and the fourth slide shaft, and FIGS. The relationship in the state is shown. FIG. 6 is a partial cross-sectional view showing the second interlocking mechanism. FIG. 7 is a partial cross-sectional view showing the preload applying mechanism. FIG. 8 is an exploded view showing a hinge mechanism in an electronic apparatus according to another embodiment of the present invention. FIG. 9 is an explanatory diagram for explaining the opening / closing operation of the mounting member and the relationship between the cam surface and the slide shaft in the electronic device according to another embodiment, where FIG. b) shows one intermediate angle state, (c) shows an open state of approximately 180 degrees, (d) shows the other intermediate angle state, and (e) shows the other folded storage position state. FIGS. 10A and 10B are explanatory diagrams for explaining the interlocking operation of the second folding operation interlocking mechanism in the electronic device according to another embodiment, where FIG. 10A is one folding storage position state, and FIG. The intermediate angle state, (c) shows an open state of approximately 180 degrees, (d) shows the other intermediate angle state, and (e) shows the other folded storage position state. FIG. 11 is an explanatory diagram for explaining the operation of the preload applying mechanism in the electronic apparatus according to another embodiment.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an exploded view showing a hinge mechanism of an electronic device according to an embodiment of the present invention. 2A and 2B are diagrams showing a cam plate of a hinge mechanism, wherein FIG. 2A is a front view as viewed from the direction of arrow A in FIG. 1, and FIG. 2B is a cross-sectional view taken along line BB in FIG. It is. FIGS. 3A and 3B are diagrams for explaining the relationship between the opening / closing operation of the housing and the mounting member and the cam surface-sliding shaft, where FIG. 3A is one folded storage position state, and FIG. 3B is one intermediate angle. The state, (c) shows an open state of approximately 180 degrees, (d) shows the other intermediate angle state, and (e) shows the other folded storage position state. FIG. 4 is an explanatory diagram showing an enlarged relationship between the cam surface and the first slide shaft, the second slide shaft, the third slide shaft, and the fourth slide shaft, and FIGS. The relationship in the state is shown. FIG. 5 is an explanatory diagram showing an enlarged relationship between the cam surface and the first slide shaft, the second slide shaft, the third slide shaft, and the fourth slide shaft, and FIGS. The relationship in the state is shown. FIG. 6 is a partial cross-sectional view showing the second interlocking mechanism. FIG. 7 is a partial cross-sectional view showing the preload applying mechanism.

  The casing of the foldable electronic device is a pair of casings, and includes a first casing 101 (see FIG. 3) and a second casing 102 (see FIG. 3) that open and close via a hinge mechanism 50. Has been. The first housing 101 and the second housing 102 are opened / closed by the hinge mechanism 50 in an angle range within 360 degrees relative to the folding center line CC (see FIG. 3C). Can be folded. The first housing 101 and the second housing 102 each contain an electronic component, and the first housing 101 and the second housing 102 are connected by a cable (not shown). Each of the first casing 101 and the second casing 102 includes a display unit (not shown). The electronic device includes a first folding storage position (one folding storage position) for folding and storing the first casing 101 and the second casing 102 so that one surfaces of the first casing 101 and the second casing 102 face each other. The second folding storage position (the other folding storage position) for storing the second casing 102 so that the other surfaces of the second casing 102 face each other, and the first casing 101 and the second casing 102 are 180. It opens and closes via a hinge mechanism 50 at a 360 degree opening / closing position including an opening position of about 180 degrees for setting the opening degree or about 180 degrees (hereinafter referred to as about 180 degrees). The hinge mechanism 50 is provided at both ends of the side surface of the electronic device.

  The hinge mechanism 50 includes a first mounting member 12 that is fixedly disposed on an attachment surface on the other surface 101b side of the first housing 101, and an attachment surface on the other surface 102b side of the second housing 102. It has the 2nd attachment member 13 arrange | positioned fixedly. The first mounting member 12 is a substantially L-shaped member, and a bolt hole 12b for fastening a mounting surface on the other surface 101b side to one surface of the L shape is formed on the other surface of the L shape. A double-sided hole 12a is formed. The mounting surface of the first housing 101 and the first mounting member 12 are fastened by a screw member such as a bolt inserted through the bolt holes 12b and 12b. A first shaft portion 14 a that is one end side of the first slide shaft 14 is fitted into the two-faced hole 12 a of the first mounting member 12. The first shaft portion 14a is a shaft portion in which a two-side shaving portion that can be fitted into the two-side shaving hole 12a is formed. The first slide shaft 14 is configured such that the two-surface shaving portion of the first shaft portion 14a is fitted into the two-surface shaving hole 12a of the first mounting member 12 and the end portion of the first shaft portion 14a is caulked. The first mounting member 12 is prevented from coming out of 14. That is, the first mounting member 12 is fitted into the first shaft portion 14a and is in contact with the stepped portion, and the end portion of the first shaft portion 14a is caulked so that the first mounting member 12 is moved to the first slide. The first slide shaft 14 is integrated in the axial direction so as not to come out of the shaft 14. Further, the first mounting member 12 and the first slide shaft 14 are arranged around the axis of the first slide shaft 14 by the engagement of the two-surface cutting hole 12a and the two-surface cutting portion of the first shaft portion 14a. Swing in one direction.

  The second mounting member 13 is a substantially L-shaped member, and a bolt hole 13b for fastening the second housing 102 to one surface of the L-shape is cut into two faces on the other surface of the L-shape. A hole 13a is formed. The mounting surface of the second housing 102 and the second mounting member 13 are fastened by a screw member such as a bolt inserted through the bolt holes 13b and 13b. A first shaft portion 34 a that is one end side of the third slide shaft 34 is fitted into the two-faced cutting hole 13 a of the second mounting member 13. The first shaft portion 34a is a shaft portion in which a two-side shaving portion that can be fitted into the two-side shaving hole 13a is formed. The third slide shaft 34 is configured such that the two-surface shaving portion of the first shaft portion 34a is fitted into the two-surface shaving hole 13a of the second mounting member 13 and the end portion of the first shaft portion 34a is caulked. The second mounting member 13 is prevented from coming out of 34. That is, the second mounting member 13 is fitted into the first shaft portion 34a and is in contact with the stepped portion, and the end portion of the first shaft portion 34a is caulked so that the second mounting member 13 is moved to the third slide. The third slide shaft 34 is integrated in the axial direction so as not to come out of the shaft 34. The second mounting member 13 and the third slide shaft 34 are arranged in a direction around the axis line of the third slide shaft 34 by engaging the two-surface shaving hole 13a and the two-surface shaving portion of the first shaft portion 34a. Swing together.

  The first slide shaft 14 is guided by a second shaft portion 14b having a larger diameter than the first shaft portion 14a, a bowl-shaped third shaft portion 14c having a larger diameter than the second shaft portion 14b, and a cam plate 1 described later. The fourth shaft portion 14d is formed with a part and the like, the fifth shaft portion 14e is formed on the two-face shaving portion, and the sixth shaft portion 14f is smaller in diameter than the fifth shaft portion 14e. The sixth shaft portion 14f has a two-side shaved portion on the tip side.

  The fourth shaft portion 14 d is inserted into the first hole portion 10 a on the large diameter side of the link plate 10, the inner diameter portion of the washer 11, the first hole portion 2 a of the synchronous cam 2, and the first cam groove 1 a of the cam plate 1. The The two-faced hole 3a of the first click plate 3 is inserted through the fifth shaft portion 14e. The inner diameter portion of the sleeve 21 and the two-faced hole portion 4a of the second click plate 4 are inserted through the sixth shaft portion 14f. The end of the sixth shaft portion 14f is caulked, and the sleeve 21 and the second click plate 4 inserted through the sixth shaft portion 14f of the first slide shaft 14 do not come out in the axial direction of the first slide shaft 14. So that it is fixed. The first click plate 3 is a plate having an egg-shaped cross section, and a double-sided hole 3a and a hole 3b are formed at positions separated by a predetermined dimension. The second click plate 4 is an egg having a cross-sectional egg shape, and similarly to the first click plate 3, a double-sided hole 4a and a hole 4b are formed at positions separated by a predetermined dimension. A sleeve 21 is provided between the first click plate 3 and the second click plate 4, and the sleeve 21 is inserted through the sixth shaft portion 14 f of the first slide shaft 14. The sleeve 21 is for providing the second click plate 4 at a position away from the step portion of the sixth shaft portion 14f by a predetermined amount. The first click plate 3, the second click plate 4, and the first slide shaft 14 are composed of a two-surface shaving hole portion 3 a and a fifth shank portion 14 e, a two-surface shaving hole portion 4 a, and a sixth shaft portion 14 f. Since the two-side shaving portion is fitted together, it swings integrally in the direction around the axial direction of the first slide shaft 14.

  A second slide shaft 16 is provided on the opposite side of the cam plate 1 from the first attachment member 12 side. The second slide shaft 16 is formed with a first shaft portion 16a and a second shaft portion 16b with a central flange portion 16c interposed therebetween. The first shaft portion 16 a is inserted into the hole portion 3 b of the first click plate 3, and the second shaft portion 3 b is inserted into the hole portion 4 b of the second click plate 4. In other words, the second slide shaft 16 is supported by the first click plate 3 and the second click plate 4 so as to be movable in the axial direction. A coil spring 22 is wound around the outer peripheral portion of the second shaft portion 16b. Further, the second slide shaft 16 is always provided by the first click plate 3 and the second click plate 4 so that the axis is always parallel to the first slide shaft 14. The second slide shaft 16 is constantly urged toward the cam plate 1 side by the urging portion 16c being urged by the urging force of the coil spring 22 (see FIG. 7).

  The end portion side of the first shaft portion 16 a of the second slide shaft 16 is guided by being fitted into the second cam groove 1 b of the cam plate 1. The second cam groove 1b is a V-shaped cam groove formed in a V-shape or a substantially V-shape. One cam groove portion 1b1 on one side of the V-shaped cam groove and the V-shaped cam groove And the other cam groove portion 1b2 which is the other side (see FIG. 2). The second cam groove 1b is a cam groove formed so as to have a groove width for guiding the second slide shaft 16 and a predetermined depth. In the second cam groove 1b, a first casing 101 and a second casing 102 are provided at three locations, that is, a V-shaped tip end portion at the center of the V-shape, one end portion (start end portion), and the other end portion (termination end portion). Engaged hole portions 1e1, 1e2, 1e3 for providing a click feeling when opening and closing are formed. A V-shaped central portion of the second cam groove 1b has a groove width for guiding the first slide shaft 14, and a V-shaped tip portion of the second cam groove 1b and a fourth cam groove 1d described later. A first cam groove 1a is formed extending in a straight line direction connecting to the V-shaped tip (X direction in FIG. 3; directions indicated by arrows + X and -X directions). The first cam groove 1a is a cam groove for guiding the first slide shaft 14 to move forward and backward. In this embodiment, the first cam groove 1a is described as being linear, but is not limited thereto.

  That is, the first cam groove may be a cam groove having a groove width for guiding the first slide shaft 14 and extending in a linear direction connecting both V-shaped tip portions. Alternatively, it may be a substantially straight cam groove, a curved cam groove, a cam groove having a combination of a straight line and a curved line, or the like. Further, in this embodiment, one cam groove portion and the other cam groove portion of the second cam groove are formed in a linear cam groove portion, but may be in other shapes. For example, it may be a substantially straight cam groove portion, a curved cam groove portion, a cam groove portion having a shape in which a straight line and a curve are combined, or the like. The shapes of the first cam groove and the second cam groove are appropriately selected according to the specifications of the electronic device as long as the first slide shaft and the second slide shaft can be guided and moved while maintaining a parallel state. is there.

  In the second slide shaft 16, the end portion of the first shaft portion 16 a comes into contact with the bottom portion of the second cam groove 1 b by the biasing force of the coil spring 22, and opens and closes the first housing 101 and the second housing 102. In this case, a predetermined load (preload) is always applied to prevent the occurrence of rattling during the opening / closing operation. Further, when the end portion of the first shaft portion 16a is engaged with the engaged hole portions (click feeling generating portions) 1e1, 1e2, 1e3, or when the engagement is released, a click feeling is given. The preload applying mechanism 53 on the first mounting member 12 side is configured by the coil spring 22, the first click plate 3, the second click plate 4, and the like.

  The third slide shaft 34 is guided by a second shaft portion 34b having a larger diameter than the first shaft portion 34a, a bowl-shaped third shaft portion 34c having a larger diameter than the second shaft portion 34b, and a cam plate 1 described later. It is formed from a fourth shaft portion 34d in which a part or the like is formed, a fifth shaft portion 34e formed in a two-faced cutting portion, and a sixth shaft portion 34f having a smaller diameter than the fifth shaft portion 34e. The sixth shaft portion 34f is formed with a two-side shaving portion on the tip side.

  The fourth shaft portion 34 d is inserted into the first hole portion 30 a on the large diameter side of the link plate 30, the inner diameter portion of the washer 31, the first hole portion 27 a of the synchronous cam 27, and the third cam groove 1 c of the cam plate 1. The A two-faced hole 28a of the third click plate 28 is inserted through the fifth shaft portion 34e. The inner diameter portion of the sleeve 41 and the two-faced hole portion 29a of the fourth click plate 29 are inserted through the sixth shaft portion 34f. The end portion of the sixth shaft portion 34f is caulked, and the sleeve 41 and the fourth click plate 29 inserted through the sixth shaft portion 34f of the third slide shaft 34 do not come out in the axial direction of the third slide shaft 34. So that it is fixed. The third click plate 28 is a plate having an egg-shaped cross section, and a double-sided cut hole 28a and a hole 28b are formed at positions separated by a predetermined dimension. The fourth click plate 29 is a plate having an egg-shaped cross section, and similarly to the third click plate 28, a double-sided cut hole 29a and a hole 29b are formed at positions separated by a predetermined dimension. A sleeve 41 is provided between the third click plate 28 and the fourth click plate 29, and the sleeve 41 is inserted through the sixth shaft portion 34 f of the third slide shaft 34. The sleeve 41 is for providing the fourth click plate 29 at a position separated from the step portion of the sixth shaft portion 34f by a predetermined amount. The third click plate 28, the fourth click plate 29, and the third slide shaft 34 are formed by a two-side shaving hole portion 28a and a fifth shank portion 34e, a two-side shaving hole portion 29a, and a sixth shaft portion 34f. Since the two-side shaving portion is fitted together, it swings integrally in the direction around the axial direction of the third slide shaft 34.

  A fourth slide shaft 36 is provided on the opposite side of the cam plate 1 from the first mounting member 13 side. The fourth slide shaft 36 is formed with a first shaft portion 36a and a second shaft portion 36b with a central flange portion 36c interposed therebetween. The first shaft portion 36 a is inserted into the second hole portion 28 b of the third click plate 28, and the second shaft portion 36 b is inserted into the hole portion 29 b of the fourth click plate 29. The third click plate 28 is a plate having an egg-shaped cross section, and a double-sided cut hole 28a and a hole 28b are formed at positions separated by a predetermined dimension. The fourth click plate 29 is a plate having an egg-shaped cross section, and similarly to the third click plate 28, a double-sided cut hole 29a and a hole 29b are formed at positions separated by a predetermined dimension. The third click plate 28 corresponds to the first click plate 3, and the fourth click plate 29 corresponds to the second click plate 4. A coil spring 42 is wound around the outer peripheral portion of the second shaft portion 36 b of the fourth slide shaft 36. Further, the fourth slide shaft 36 is always provided by the third click plate 28 and the fourth click plate 29 so that the axis is always parallel to the third slide shaft 34. The fourth slide shaft 36 is constantly biased toward the cam plate 1 by the biasing force of the coil spring 42.

  The end side of the first shaft portion 36 a of the fourth slide shaft 36 is guided by being fitted into the fourth cam groove 1 d of the cam plate 1. The fourth cam groove 1d is a V-shaped cam groove formed in a V-shape or a substantially V-shape. One cam groove portion 1d1 on one side of the V-shaped cam groove and the V-shaped cam groove And the other cam groove portion 1d2 which is the other side of (see FIG. 2). The fourth cam groove 1d is a cam groove formed so as to have a groove width for guiding the fourth slide shaft 36 and a predetermined depth. In the fourth cam groove 1d, the first casing 101 and the second casing 102 are provided at three locations, that is, a V-shaped tip end portion in the center of the V-shape, one end portion (start end portion), and the other end portion (termination end portion). Engaged hole portions 1e4, 1e5, 1e6 are provided to give a click feeling when the two are opened and closed. The V-shaped central portion of the fourth cam groove 1d has a groove width for guiding the third slide shaft 34, and the V-shaped tip portion of the second cam groove 1b and the V-shape of the fourth cam groove 1d. A third cam groove 1c is formed extending in a linear direction (X direction in FIG. 3) connecting the tip portion. The third cam groove 1c is a cam groove for guiding the third slide shaft 34 to move forward and backward. In this embodiment, the third cam groove 1c is described as being linear, but is not limited thereto.

  That is, the third cam groove may be a cam groove having a groove width for guiding the third slide shaft 34 and extending in a linear direction connecting both V-shaped tip portions. Alternatively, it may be a substantially straight cam groove, a curved cam groove, a cam groove having a combination of a straight line and a curved line, or the like. Further, in this embodiment, one cam groove portion and the other cam groove portion of the fourth cam groove are formed in a linear cam groove portion, but other shapes may be used. For example, it may be a substantially straight cam groove portion, a curved cam groove portion, a cam groove portion having a shape in which a straight line and a curve are combined, or the like. The shapes of the third cam groove and the fourth cam groove are appropriately selected according to the specifications of the electronic device as long as the third slide shaft and the fourth slide shaft can be guided and moved while maintaining a parallel state. is there.

  The first cam surface composed of the first cam groove 1a and the second cam groove 1b and the second cam surface composed of the third cam groove 1c and the fourth cam groove 1d are the folding center line C−. It is formed in a symmetrical shape with respect to C (see FIGS. 3C, 4 and 5). In other words, the 1st cam groove 1a and the 3rd cam groove 1c are formed in the symmetrical shape centering on folding center line CC (refer FIG.3 (C), FIG.4, 5). Similarly, the 2nd cam groove 1b and the 4th cam groove 1d are formed in the symmetrical shape centering on folding center line CC (refer FIG.3 (C), FIG.4, 5).

  In the fourth slide shaft 36, the end portion of the first shaft portion 36a contacts the bottom portion of the fourth cam groove 1d by the biasing force of the coil spring 42, and opens and closes the first housing 101 and the second housing 102. In this case, a predetermined load (preload) is always applied to prevent the occurrence of rattling during the opening / closing operation. Further, when the end portion of the first shaft portion 36a is engaged with the engaged hole portions (click feeling generating portions) 1e4, 1e5, 1e6, or when the engagement is released, a click feeling is given. The preload applying mechanism 53 on the second mounting member 13 side is configured by a coil spring 42, a third click plate 28, a fourth click plate 29, and the like.

  The link shaft plate 7 is a plate having a substantially rhombus shape, and a first hole 7a is formed in the center, and a second hole 7b and a third hole 7c are formed on both sides in the longitudinal direction. The second hole 7b and the third hole 7c are provided at symmetrical positions separated by a predetermined amount with the hole center of the first hole 7a as the center. A fixed plate 8 is provided at a position away from the link shaft plate 7 by a predetermined amount. The fixed plate 8 is a substantially rectangular plate and is fixed to the cam plate 1. The fixed plate 8 is formed with a second hole 8b in the center. Also, the first hole portion 8a and the first hole portion 8a are formed at a position away from the second hole portion 8b by a predetermined amount in the longitudinal direction, and the position away from the second hole portion 8b by a predetermined amount in the direction orthogonal to the longitudinal direction. A third hole portion 8c and a fourth hole portion 8d are formed. The first holes 8a, 8a have the same pitch dimensions as the holes 1f, 1f formed in the cam plate 1.

  A pair of fixing pins 17 are provided between the fixing plate 8 and the cam plate 1. The fixing pin 17 has a first shaft portion 17a on one side and a second shaft portion 17b on the other side with the flange portion in between. The first shaft portion 17a of the fixing pin 17 is inserted into the first hole portion 8a of the fixing plate 8, and the end portion of the first shaft portion 17a is caulked so that the first shaft portion 17a comes out of the fixing plate 8. There is no one. The second shaft portion 17b of the fixing pin 17 is inserted into the hole portion 1f of the cam plate 1, and the second shaft portion 17b does not come out of the cam plate 1 by caulking the end portion of the second shaft portion 17b. , It is one. In other words, the cam plate 1 and the fixing plate 8 are fixed via the fixing pins 17 and 17 at positions separated from the width of the flange portion of the fixing pin 17.

  A link shaft 19 is provided between the first hole portion 7 a of the link shaft plate 7 and the second hole portion 8 b of the fixed plate 8. The link shaft 19 is formed with a flange portion 19a, a first shaft portion 19b having a smaller diameter than the flange portion, and a second shaft portion 19c having a smaller diameter than the first shaft portion 19b. A first hole portion 7a and a washer 9 of the link shaft plate 7 are inserted through the first shaft portion 19b. The second shaft portion 19c is inserted into the second hole portion 8b of the fixed plate 8 and caulked at the end portion. As a result, the fixed plate 8 does not come out of the second shaft portion 19c in the axial direction, and the link shaft plate 7 and the fixed plate 8 are integrated. A washer 9 is provided between the link shaft plate 7 and the fixed plate 8. The link shaft plate 7 is sandwiched between the flange portion 19 a of the link shaft 19 and the washer 9 and swings around the link shaft 19. The washer 9 determines the distance between the link shaft plate 7 and the fixed plate 8 to a predetermined amount.

  The second hole 7 b of the link shaft plate 7 and the second hole 10 b of the link plate 10 are connected by a connecting pin 18. The coupling pin 18 is formed with a first shaft portion 18a having a smaller diameter than the flange portion and a second shaft portion 18b having a smaller diameter than the first shaft portion 18a. The first shaft portion 18 a of the coupling pin 18 is inserted into the second hole portion 7 b of the link shaft plate 7. The second shaft portion 18b of the coupling pin 18 is inserted into the second hole portion 10b on the small-diameter hole side of the link plate 10, and the link plate 10 is connected to the axis of the coupling pin 18 from the coupling pin 18 by caulking the end portion. It does not come out in the direction.

The third hole 7c of the link shaft plate 7 and the second hole 30b of the link plate 30 are connected by a connecting pin 38. The coupling pin 38 is formed with a first shaft portion 38a having a smaller diameter than the flange portion and a second shaft portion 38b having a smaller diameter than the first shaft portion 38a. The first shaft portion 38 a of the coupling pin 38 is inserted into the third hole portion 7 c of the link shaft plate 7. The second shaft portion 38b of the coupling pin 38 is inserted into the second hole portion 30b on the small-diameter hole side of the link plate 30 and caulked at the end, so that the link plate 30 is connected to the coupling pin 38 from the coupling pin 38 axis. It does not come out in the direction. The first folding operation interlocking mechanism 51 includes a link shaft plate 7, a link plate 10, a coupling pin 18, a link shaft 19, a link plate 30, a coupling pin 38, and the like.
A washer 11 is provided between the link plate 10 and the synchronization cam 2. A washer 31 is provided between the link plate 30 and the synchronization cam 27.

  The first shaft portion 20 a of the gear shaft 20 is inserted into the third hole portion 8 c of the fixed plate 8, and the gear shaft 20 is fixed to the fixed plate 8. The first shaft portion 40 a of the gear shaft 40 is inserted into the fourth hole portion 8 d of the fixed plate 8, and the gear shaft 40 is fixed to the fixed plate 8. An inner diameter portion 5c of a first sector gear (first synchronous gear) 5 is inserted into the second shaft portion 20b of the gear shaft 20, and the first sector gear 5 is rotatably supported. The first sector gear 5 is formed with a fan-shaped gear portion 5a and an engaging portion 5b on the side of the gear portion 5a. The engaging portion 5b of the first sector gear 5 includes a first engaging portion 5b1 and a second engaging portion 5b2 (see FIG. 6). An inner diameter portion 6c of the second sector gear 6 (second synchronous gear) is inserted into the second shaft portion 40b of the gear shaft 40, and the second sector gear 6 is rotatably supported. The second sector gear 6 is formed with a fan-shaped gear portion 6a and an engaging portion 6b on the side portion of the gear portion 6a. The engaging portion 6b of the second sector gear 6 includes a first engaging portion 6b1 and a second engaging portion 6b2 (see FIG. 6). The gear portion 5a and the gear portion 6a are engaged with each other.

  The synchronous cam 2 has the same position as the center position of the outer peripheral portion of the R-shaped engagement portion 2c having an outer diameter of a predetermined diameter across the first hole portion 2a. The center second hole 2b is formed in a symmetrical shape. A recess 2d is formed between the pair of R-shaped engaging portions 2c and the R-shaped engaging portion 2c. The synchronization pin 15 has a first shaft portion 15a formed to have a diameter substantially the same as that of the R-shaped engagement portion 2c, and a second shaft fitted into the second hole portion 2b of the synchronization cam 2. A portion 15b is formed. The pair of first shaft portions 15a is provided so as to be able to contact the first engagement portion 5b1 and / or the second engagement portion 5b2 so as to sandwich the engagement portion 5b of the first sector gear 5. .

  The synchronous cam 27 has the same position as the center position of the outer peripheral portion of the R-shaped engagement portion 27c and the R-shaped engagement portion 27c having an outer diameter of a predetermined diameter across the first hole portion 27a. The center second hole 27b is formed in a symmetrical shape. A concave portion 27d is formed between the pair of R-shaped engaging portions 27c and the R-shaped engaging portion 27c. The synchronization pin 35 has a first shaft portion 35a formed to have a diameter substantially the same as the diameter size of the R-shaped engagement portion 27c, and a second shaft fitted into the second hole portion 27b of the synchronization cam 27. A portion 35b is formed. The pair of first shaft portions 35a is provided so as to be able to contact the first engagement portion 6b1 and / or the second engagement portion 6b2 so as to sandwich the engagement portion 6b of the second sector gear 6. . The second folding operation interlocking mechanism 52 includes the synchronization cam 2, the synchronization pin 15, the first sector gear 5, the gear shaft 20, the synchronization cam 27, the synchronization pin 35, the second sector gear 6, the gear shaft 40, and the like. The second folding operation interlocking mechanism 52 is for making the folding operation between the first casing 101 and the second casing 102 smoother, and if provided, the operability and usability are improved. It does not have to be provided.

  The first mounting member 12 fixed to the first housing 101 is a two-surface shaving portion of the first shaft portion 14a of the first slide shaft 14 fitted into the two-surface shaving hole 12a of the first mounting member 12. Therefore, when the first housing 101 swings in the ± θ direction in FIG. 3, the first slide shaft 34 also swings integrally. The first mounting member 13 fixed to the second housing 102 is such that the two-surface shaving portion of the first shaft portion 34a of the third slide shaft 34 is fitted into the two-surface shaving hole 13a of the second mounting member 13. Therefore, when the first housing 102 swings in the ± θ direction in FIG. 3, the third slide shaft 34 swings integrally.

The operation of the hinge mechanism 50 during the opening / closing operation of the first housing 101 and the second housing 102 of the electronic device will be described with reference to FIGS.
In this description, from the first folding storage position where one surface of the first housing 101 and one surface of the second housing 102 face each other, the other surface of the first housing 101 and the second housing An operation when an operation of opening and closing the second folding storage position where the other surface of the body 102 faces is described. In addition, when opening / closing operation | movement from the 2nd folding storage position to the 1st folding storage position, only reverse operation | movement is performed and description is abbreviate | omitted.

  FIG. 3A shows one closed state (the state of the first folding storage position) where one surface 101a of the first housing 101 and one surface 102a of the second housing 102 are opposed to each other. When the first housing 101 is opened from the state of FIG. 3A, the first slide shaft 14 is guided and moved by the first cam groove 1a. The second slide shaft 16 moves while being guided by the other cam groove portion 1b2 (see FIGS. 4 and 5) of the second cam groove 1b. When the second casing 102 is opened, the third slide shaft 34 is guided and moved by the third cam groove 1c. The fourth slide shaft 36 moves while being guided by the other cam groove 1d2 (see FIGS. 4 and 5) of the fourth cam groove 1d. The first housing 101 swings in the −θ direction and moves in the −X direction. Similarly, the second housing 102 swings in the + θ direction and moves in the + X direction. At this time, the first slide shaft 14, the second slide shaft 16, the third slide shaft 34, and the fourth slide shaft 36 are mutually connected by the first folding operation interlocking mechanism 51 and the second folding operation interlocking mechanism 52. The first casing 101 and the second casing 102 swing in conjunction with each other. When the one surface 101a of the first housing 101 and the one surface 102a of the second housing 102 are at an angle of approximately 90 degrees, the state shown in FIG. 3B (one intermediate angle state) is obtained.

  Further, when the first casing 101 and the second casing 102 are opened until the first casing 101 and the second casing 102 are opened approximately 180 degrees (approximately 180 degrees opened state), the first casing 101 is Swings in the -θ direction and moves in the + X direction. Similarly, the second housing 102 swings in the + θ direction and moves in the −X direction (see FIG. 3C). At this time, the first slide shaft 14, the second slide shaft 16, the third slide shaft 34, and the fourth slide shaft 36 are mutually connected by the first folding operation interlocking mechanism 51 and the second folding operation interlocking mechanism 52. The first casing 101 and the second casing 102 swing in conjunction with each other. The first housing 101 and the second housing 102 are closest to the gap δ. Further, when the opening operation from the state of FIG. 3A to the state of FIG. 3C is performed, interference or the like occurs at the corner portion of the first housing 101 and the corner portion of the second housing 102. There is nothing to do.

  From the state where the first housing 101 and the second housing 102 are opened approximately 180 degrees as shown in FIG. 3C, the other surface 101b of the first housing 101 and the other surface of the second housing 102 are When the closing operation is performed so that the angle becomes approximately 90 degrees, the first slide shaft 14 is guided and moved by the first cam groove 1a. The second slide shaft 16 moves while being guided by one cam groove portion 1b1 (see FIGS. 4 and 5) of the second cam groove 1b. The third slide shaft 34 moves while being guided by the third cam groove 1c. The fourth slide shaft 36 moves while being guided by one cam groove portion 1d1 (see FIGS. 4 and 5) of the fourth cam groove 1d. When the other surface 101b of the first housing 101 and the other surface 102b of the second housing 102 are at an angle of approximately 90 degrees, the state shown in FIG. 3D (the other intermediate angle state) is obtained. The first housing 101 swings in the −θ direction and moves in the −X direction. Similarly, the second housing 102 swings in the + θ direction and moves in the + X direction. At this time, the first slide shaft 14, the second slide shaft 16, the third slide shaft 34, and the fourth slide shaft 36 are mutually connected by the first folding operation interlocking mechanism 51 and the second folding operation interlocking mechanism 52. The first casing 101 and the second casing 102 swing in conjunction with each other.

  Further, when the second surface 101b of the first housing 101 and the other surface 102b of the second housing 102 are closed to face each other, the state shown in FIG. 3E (second folding storage position state). It becomes. At this time, the first casing 101 swings in the −θ direction and moves in the + X direction. Similarly, the second housing 102 swings in the + θ direction and moves in the −X direction. At this time, the first slide shaft 14, the second slide shaft 16, the third slide shaft 34, and the fourth slide shaft 36 are mutually connected by the first folding operation interlocking mechanism 51 and the second folding operation interlocking mechanism 52. The first casing 101 and the second casing 102 swing in conjunction with each other. Even during this swinging operation, the corner of the first housing 101 and the corner of the second housing 102 do not interfere with each other. That is, the first casing 101 and the first housing 101 are rotated 360 degrees from the state of the first folding storage position shown in FIG. 3A to the state of the second folding storage position shown in FIG. Two housings 102 can be opened and closed. Further, when the first casing 101 and the second casing 102 are opened approximately 180 degrees, the first casing 101 and the second casing 102 can be brought closest to each other, and a 360-degree opening / closing operation is performed. When performing, the corner of the first housing 101 and the corner of the second housing 102 do not interfere with each other.

4 and 5, the opening / closing operation of the first housing 101 and the second housing 102, the first cam groove 1a, the second cam groove 1b, the third cam groove 1c formed in the cam plate 1, The relationship between the fourth cam groove 1d and the first slide shaft 14, the second slide shaft 16, the third slide shaft 34, and the fourth slide shaft 36 will be further described.
4 and 5, the first housing 101 and the first mounting member 12 move together, and when the first housing 101 swings in the ± θ direction, the first slide shaft 14 also moves. Swings together. Further, the first slide shaft 14 and the second slide shaft 16 have a predetermined dimension L between both shaft centers by the first click plate 3 and the second click plate 4, and both axes are parallel to each other. Swing while maintaining the posture. The second housing 102 and the second mounting member 13 move together, and when the second housing 102 swings in the ± θ direction, the third slide shaft 34 swings together. The third slide shaft 34 and the fourth slide shaft 36 have a predetermined dimension L between both shaft centers by the third click plate 28 and the fourth click plate 29, and both axes are parallel to each other. Swing while maintaining posture.

  The first slide shaft 14 is guided by the first cam groove 1a and moves in the + X direction or the -X direction as shown in FIGS. In other words, the first slide shaft 14 is restricted from moving in directions other than the X direction. The second slide shaft 16 moves while being guided by the second cam groove 1b. The third slide shaft 34 is guided by the third cam groove 1c and moves in the + X direction or the -X direction as shown in FIGS. In other words, the third slide shaft 34 is restricted from moving in directions other than the X direction. The fourth slide shaft 36 moves while being guided by the fourth cam groove 1d.

  As shown in FIG. 4, one surface 101a of the first housing 101 and one surface 102a of the second housing 102 are opened approximately 180 degrees (the first slide shaft 14 to the fourth slide shaft 36 are connected). When the closing operation is performed so that the angle between the one surface 101a of the first housing 101 and the one surface 102a of the second housing 102 is approximately 90 degrees from the state indicated by the solid line) The first slide shaft 14 moves in the −X direction to a state indicated by reference numeral 14 ′ in FIG. 4 and the center position moves from P1 to P2. The second slide shaft 16 moves while being guided by the other cam groove portion 1b2 of the second cam groove 1b. The second slide shaft 16 is in a state indicated by reference numeral 16 'in FIG. 4, and the center position moves from O1 to O2. At this time, the first slide shaft 14 swings in the + θ direction around the axis. The third slide shaft 34 moves in the + X direction to a state indicated by reference numeral 34 'in FIG. 4, and the center position moves from P1' to P2 '. The fourth slide shaft 36 moves while being guided by the other cam groove portion 1d2 of the fourth cam groove 1d. The fourth slide shaft 36 is in a state indicated by reference numeral 36 'in FIG. 4, and the center position moves from O1' to O2 '. At this time, the third slide shaft 34 swings in the + θ direction in the direction around the axis.

  Further, the first housing 101 and the second housing 102 are in a closed state (first folding) in which one surface 101a of the first housing 101 and one surface 102a of the second housing 102 are opposed to each other. When the closing operation is performed, the first slide shaft 14 moves in the + X direction to the state indicated by reference numeral 14 ″ in FIG. 4 and the center position moves to P3. The second cam groove 1b is guided by the other cam groove portion 1b2 and moved, and the state indicated by reference numeral 16 "in FIG. 4 is moved to the center position O3. At this time, the first slide shaft 14 swings in the −θ direction around the axis. The third slide shaft 34 moves in the −X direction to a state indicated by reference numeral 34 ″ in FIG. 4 and the center position moves to P3 ′. Further, the fourth slide shaft 36 moves to the other side of the second cam groove 1b. It moves while being guided by the cam groove 1b2, and enters the state indicated by reference numeral 36 "in FIG. 4, and the center position moves to O3 '. At this time, the third slide shaft 34 swings in the −θ direction in the direction around the axis.

  As shown in FIG. 5, from the state where the first housing 101 and the second housing 102 are opened approximately 180 degrees, the other surface 101b of the first housing 101 and the other surface 102b of the second housing 102 are displayed. And the first slide shaft 14 moves in the −X direction to the state of reference numeral 14 ′ in FIG. 5 and the center position is P1. To P4. The second slide shaft 16 is guided by the one cam groove portion 1b1 of the second cam groove 1b and moves to the state 16 'in FIG. 5, and the center position moves from O1 to O4. At this time, the first slide shaft 14 swings in the −θ direction around the axis. The third slide shaft 34 moves in the + X direction to be in the state of 34 'in FIG. 5, and the center position moves from P1' to P4 '. The second slide shaft 36 is guided by the one cam groove portion 1d1 of the fourth cam groove 1d and moves to the state 36 'in FIG. 5, and the center position moves from O1' to O4 '. At this time, the third slide shaft 34 swings in the + θ direction around the axis.

  Further, the first housing 101 and the second housing 102 are in a closed state (second folding) in which the other surface 101b of the first housing 101 and the other surface 102b of the second housing 102 are opposed to each other. When the closing operation is performed (in the storage position state), the first slide shaft 14 moves in the + X direction to the state of 14 ″ in FIG. 5, and the center position moves to P5. The first cam groove portion 1b1 of the second cam groove 1b moves while being guided by one cam groove portion 1b1, and the center position moves to O5. At this time, the first slide shaft 14 swings in the −θ direction around the axis. The third slide shaft 34 moves in the + X direction to the state of 34 "in FIG. 5, and the center position moves to P5 '. The second slide shaft 36 is one cam groove portion 1d1 of the fourth cam groove 1d. To move to the state of 36 ″ in FIG. 5, and the center position moves to O5 ′. At this time, the third slide shaft 34 swings in the + θ direction around the axis.

  The opening and closing operations of the first housing 101 and the second housing 102 are interlocked by the first folding operation interlocking mechanism 51 and the second folding operation interlocking mechanism 52. For example, when the first slide shaft 14 is guided by the first cam groove 1 a and moves in the −X direction, the link shaft plate 7 swings around the link shaft 19 via the link plate 10 and the coupling pin 18. The swing of the link shaft plate 7 is transmitted to the coupling pin 38 and the link plate 30. The swing of the link plate 30 is transmitted to the third slide shaft 34. Since the third slide shaft 34 can move only in the X direction by the third cam groove 1c, the third slide shaft 34 moves in the + X direction. When the first slide shaft 14 is guided in the first cam groove 1 a and moves in the + X direction, the link shaft plate 7 swings about the link shaft 19 via the link plate 10 and the coupling pin 18. The swing of the link shaft plate 7 is transmitted to the coupling pin 38 and the link plate 30. The swing of the link plate 30 is transmitted to the third slide shaft 34. Since the third slide shaft 34 is movable only in the X direction by the third cam groove 1c, the third slide shaft 34 moves in the -X direction. That is, in the first folding operation interlocking mechanism 51, one slide shaft is guided to the first cam groove 1a (or the third cam groove 1c) between the first slide shaft 14 and the third slide shaft 34. When the movement is made in this direction, the other slide shaft is guided by the third cam groove 1c (or the first cam groove 1a) and moved in conjunction with the other direction.

  The first slide shaft 14 swings in one direction around the axis of the first slide shaft 14 as the second slide shaft 16 moves while being guided by the second cam groove 1b. This swing is transmitted to the third slide shaft 34 via the second folding operation interlocking mechanism 52 including the synchronous cam 2, the first sector gear 5, the second sector gear 6, the synchronous cam 27, and the like. 34 swings in other directions around the axis. That is, the second folding operation interlocking mechanism 52 is configured such that when one slide shaft swings in one direction around the axis between the first slide shaft 14 and the third slide shaft 34, the other slide shaft Are swung in conjunction with other directions around the axis.

  In other words, the first housing 101 and the second housing 102 open and close in an interlocking manner between 360 degrees. Further, since the engaged hole portions 1e1 to 1e6 are formed at positions corresponding to the first folding storage position, the second folding storage position, and the opening position of about 180 degrees, the electronic device is operated at these positions. The user can feel a click feeling. In addition, since a predetermined load is constantly applied by the preload application mechanism 53, the user does not feel rattling when the user performs the opening / closing operation of the first casing 101 and the second casing 102.

[Other Embodiments]
An electronic device according to another embodiment will be described with reference to FIGS.
FIG. 8 is an exploded view showing a hinge mechanism of an electronic apparatus according to another embodiment. FIG. 9 is an explanatory diagram for explaining the opening / closing operation of the mounting member and the relationship between the cam surface and the slide shaft in the electronic device according to another embodiment, where FIG. b) shows one intermediate angle state, (c) shows an open state of approximately 180 degrees, (d) shows the other intermediate angle state, and (e) shows the other folded storage position state. FIGS. 10A and 10B are explanatory diagrams for explaining the interlocking operation of the second folding operation interlocking mechanism in the electronic device according to another embodiment, where FIG. 10A is one folding storage position state, and FIG. The intermediate angle state, (c) shows an open state of approximately 180 degrees, (d) shows the other intermediate angle state, and (e) shows the other folded storage position state. FIG. 11 is an explanatory diagram of a preload applying mechanism in an electronic apparatus according to another embodiment.

  The electronic apparatus according to the other embodiment mainly has a configuration in which a configuration such as a preload applying mechanism is changed. In the description of the other embodiments, the description will focus on the parts changed from the above-described embodiment, and the same members as those in the embodiment will be assigned the same reference numerals and detailed description thereof will be omitted. doing.

  The hinge mechanism 250 includes a first attachment member 12 that is fixedly disposed on an attachment surface on the other surface 101b (see FIG. 3) side of the first housing 101 (see FIG. 3), and a second housing 102 (see FIG. 3). The second mounting member 13 is fixedly disposed on the mounting surface on the other surface 102b (see FIG. 3) side of the other surface 102b (see FIG. 3). The first mounting member 12 is a substantially L-shaped member, and a bolt hole 12b for fastening a mounting surface on the other surface 101b side to one surface of the L shape is formed on the other surface of the L shape. A double-sided hole 12a is formed. The mounting surface of the first housing 101 and the first mounting member 12 are fastened by a screw member such as a bolt inserted through the bolt holes 12b and 12b. A first shaft portion 214 a that is one end side of the first slide shaft 214 is fitted into the two-sided cutting hole 12 a of the first mounting member 12. The first shaft portion 214a is a shaft portion in which a two-side shaving portion that can be fitted into the two-side shaving hole 12a is formed. The first slide shaft 214 is configured such that the two-surface shaving portion of the first shaft portion 214a is fitted into the two-surface shaving hole 12a of the first mounting member 12, and the end portion of the first shaft portion 214a is caulked. The first mounting member 12 does not come out from 214. The first mounting member 12 and the first slide shaft 214 are arranged in the direction around the axis of the first slide shaft 214 by engaging the two-surface shaving hole 12a and the two-surface shaving portion of the first shaft portion 214a. Swing together.

  The second mounting member 13 is a substantially L-shaped member, and a bolt hole 13b for fastening the second housing 102 to one surface of the L-shape is cut into two faces on the other surface of the L-shape. A hole 13a is formed. The mounting surface of the second housing 102 and the second mounting member 13 are fastened by a screw member such as a bolt inserted through the bolt holes 13b and 13b. The first shaft portion 234a that is one end side of the third slide shaft 234 is fitted into the two-faced cutting hole 13a of the second mounting member 13. The first shaft portion 234a is a shaft portion in which a two-side shaving portion that can be fitted into the two-side shaving hole 13a is formed. The third slide shaft 234 is configured such that the two-surface shaving portion of the first shaft portion 234a is fitted into the two-surface shaving hole 13a of the second mounting member 13, and the end portion of the first shaft portion 234a is caulked. The second mounting member 13 is prevented from coming out of 234. The second mounting member 13 and the third slide shaft 234 are arranged in a direction around the axis of the third slide shaft 234 by engaging the two-surface shaving hole 13a and the two-surface shaving portion of the first shaft portion 234a. Swing together.

  The first slide shaft 214 has a second shaft portion 214b having a larger diameter than the first shaft portion 214a, a third shaft portion 214c having a smaller diameter than the second shaft portion 214b, and a smaller diameter than the third shaft portion 214c, and a two-face shaving portion. The fourth shaft portion 214d is formed, the fifth shaft portion 214e is formed with a portion guided by the cam plate 201, which will be described later, and the sixth shaft portion 214f is formed on the two-face shaving portion. Yes. The third shaft portion 214c is inserted into the first hole portion 10a which is the large diameter side of the link plate 10. A two-faced hole 202a of the synchronous cam 202 is inserted through the fourth shaft portion 214d. The two shaving holes 203a of the cam follower 203 are inserted through the sixth shaft portion 214f. The end portion of the sixth shaft portion 214f is caulked so that the first slide shaft 214 and the cam follower 203 are not pulled out integrally in the axial direction of the first slide shaft 214, and the first slide shaft 214 is removed. Oscillates integrally in the direction around the axis.

  The third slide shaft 234 has a second shaft portion 234b having a larger diameter than the first shaft portion 234a, a third shaft portion 234c having a smaller diameter than the second shaft portion 234b, and a smaller diameter than the third shaft portion 234c, and a two-face shaving portion. A fourth shaft portion 234d formed with a first shaft portion, a fifth shaft portion 234e formed with a portion guided by a cam plate 201, which will be described later, and a sixth shaft portion 234f formed on a two-face shaving portion. Yes. The third shaft portion 234c is inserted into the first hole portion 30a which is the large diameter side of the link plate 30. The second shaving hole 222a of the synchronization cam 222 is inserted through the fourth shaft portion 234d. A two-side shaving hole 233a of the cam follower 233 is inserted through the sixth shaft portion 234f. The end portion of the sixth shaft portion 234f is caulked, and the third slide shaft 13 and the cam follower 223 are integrated with each other in the axial direction of the third slide shaft 13, and the third slide shaft 13 is not pulled out. Oscillates integrally in the direction around the axis.

  The cam plate 201 has a V-shaped second cam groove 1b and a V-shaped fourth on the surface opposite to the first mounting member 12 and the second mounting member 13 (the other side). A V-shaped second cam groove 201b (see FIG. 9) and a fourth cam groove 201d (see FIG. 9) corresponding to the cam groove 1d (see FIG. 2) are formed. The cam plate 201 has a linear cam groove 201a (see FIGS. 8 and 9) corresponding to the first cam groove 1a and a linear cam groove 201c (see FIGS. 8 and 9) corresponding to the third cam groove 1c. Reference) is formed. The first cam groove 201 a and the third cam groove 201 c are formed so as to penetrate the cam plate 201. The first cam groove 201a is inserted such that the fifth shaft portion 214e of the first slide shaft 214 is movable in the longitudinal direction of the first cam groove 201a. The third cam groove 201c is inserted so that the fifth shaft portion 234e of the second slide shaft 234 can move in the longitudinal direction of the third cam groove 201c.

  In a lateral (short) direction perpendicular to the longitudinal direction of the first cam groove 201a, a first shaft portion 201e formed with a substantially quarter-circle (1/4 circle) -shaped member vertically projects in one direction. It is formed as follows. An inner diameter portion 205a of the first synchronization gear 205 is rotatably fitted to the first shaft portion 201e. A hole 205b is formed in the first synchronization gear 205, and an engagement pin 206 is inserted into the hole 205b.

  In the lateral (short) direction of the third cam groove 201c, a second shaft portion 201f formed with a substantially quarter-circle (1/4 circle) -like member is formed so as to protrude in one direction. Yes. An inner diameter portion 225a of the second synchronization gear 225 is rotatably fitted to the second shaft portion 201f. A hole 225b is formed in the second synchronization gear 225, and an engagement pin 226 is inserted into the hole 225b.

  The cam plate 201 is formed with a third shaft portion 201g1 and a fourth shaft portion 201g2 for rotatably supporting the first intermediate gear 207 and the second intermediate gear 227. The first synchronization gear 205, the first intermediate gear 207, the second intermediate gear 227, and the second synchronization gear 225 each constitute a gear train that meshes, and the rotation on the first synchronization gear 205 side is the second synchronization gear. The rotation on the 225 side or the second synchronization gear 225 side is transmitted to the first synchronization gear 205 side.

  The cam plate 201 is formed with a fixing shaft portion 201h1 and a fixing shaft portion 201h2 for fixing the fixing plate 213. The fixing plate 213 has a hole 213a and a hole 213b. The fixing plate 213 has the end portions of the fixing shaft portion 201h1 and the fixing shaft portion 201h2 in the state where the small diameter portions of the fixing shaft portion 201h1 and the fixing shaft portion 201h2 are inserted into the hole portions 213a and 213b. The cam plate 201 is fixed by crimping.

  A synchronization cam 202 is provided on one side (the fixed plate 213 side) of the first synchronization gear 205. The synchronous cam 202 is formed with a two-side cut hole 202a through which the two-side cut portion formed in the fourth shaft portion 214d of the first slide shaft 214 is inserted, and an engagement groove 202b through which the engagement pin 206 is inserted. Has been. Accordingly, when the first slide shaft 214 rotates in the direction around the axis, the two-side scraped portion of the fourth shaft portion 214d, the two-side scraped hole 202a of the synchronization cam 202, the engagement groove 202b of the synchronization cam 202, and the engagement pin The rotation is transmitted to the first synchronization gear 205 via 206. The configuration composed of the engagement groove 202b and the engagement pin 206 is such that the rotational force can be transmitted even when the first slide shaft 214 is guided by the cam plate 201 and linearly moves.

  Similarly, a synchronization cam 222 is provided on one side (the fixed plate 213 side) of the second synchronization gear 225. The synchronous cam 222 is formed with a two-side cut hole 222a through which the two-side cut portion formed in the fourth shaft portion 234d of the third slide shaft 234 is inserted, and an engagement groove 222b through which the engagement pin 226 is inserted. Has been. The configuration composed of the engagement groove 222b and the engagement pin 226 is such that the rotational force can be transmitted even when the third slide shaft 234 is linearly moved while being guided by the cam plate 201. Therefore, when the third slide shaft 234 rotates in the direction around the axis, the two-surface shaving portion of the fourth shaft portion 234d, the two-surface shaving hole 222a of the synchronization cam 222, the engagement groove 222b of the synchronization cam 222, and the engagement pin The rotation is transmitted to the second synchronization gear 225 via 226.

  Further, since the first synchronization gear 205 and the second synchronization gear 225 are meshed with each other via the first intermediate gear 207 and the second intermediate gear 227, which of the first slide shaft 214 and the third slide shaft 234 is One of the rotations is transmitted to the other. The first synchronization gear 205, the second synchronization gear 225, the synchronization cam 202, the synchronization cam 222, the first intermediate gear 207, the second intermediate gear 227, the engagement pin 206, the engagement pin 226 and the like are the second folding operation interlocking mechanism. 252 is formed. The first folding operation interlocking mechanism 51 includes the link shaft plate 7, the link plate 10, the coupling pin 18, the link shaft 19, the link plate 30, the coupling pin 38, and the like, and is the same as that of the above-described embodiment. Since it is a structure, detailed description is abbreviate | omitted.

  The cam follower 203 is a plate-like member having a substantially egg shape, and is formed with a double-sided cut hole 203a in a substantially central portion, and a double-sided cut portion of the sixth shaft portion 214f of the first slide shaft 214. Are engaged. The first slide shaft 214 is fixed by caulking the end portion of the sixth shaft portion 214f in a state where the sixth shaft portion 214f is inserted into the two-faced hole 203a of the cam follower 203. The cam follower 203 has a slide shaft portion 216 formed on one side. The slide shaft portion 216 corresponds to the second slide shaft 16 of the above-described embodiment, and engages with the V-shaped second cam groove 201b of the cam plate 201. The first slide shaft 214 and the slide shaft portion 216 are integrally guided to the first cam groove 201a and the second cam groove 201b, and as shown in FIG. 9, the same slide operation as that of the above-described embodiment is performed. do.

  The cam follower 223 is a plate-like member having an approximately egg shape, and is formed with a two-surface cutting hole 223a at a substantially central portion, and a two-surface cutting portion of the sixth shaft portion 234f of the third slide shaft 234. Are engaged. The third slide shaft 234 is fixed by caulking the end portion of the sixth shaft portion 234f in a state where the sixth shaft portion 234f is inserted into the two-faced cutting hole 223a of the cam follower 223. The cam follower 223 has a slide shaft portion 236 formed on one side. The slide shaft portion 236 corresponds to the fourth slide shaft 36 of the above-described embodiment, and engages with the V-shaped fourth cam groove 201d of the cam plate 201. The third slide shaft 234 and the slide shaft portion 236 are integrally guided to the third cam groove 201c and the fourth cam groove 201d, and as shown in FIG. 9, the slide operation similar to the above-described embodiment is performed. do.

  In other words, the first mounting member 12 and the second mounting member 13 perform the same swinging operation as in the above-described embodiment, and perform an opening / closing operation in which the first housing and the second housing are interlocked (FIG. 3). reference).

The rear plate 219 is integrally fixed to the cam plate 201 with a predetermined interval.
One end of the first guide shaft 218 and the second guide shaft 238 is fixed to the rear plate 219. On one surface side of the movable cam plate 204, a first end face cam C1 that engages with an engagement convex portion 203b (see FIG. 11) formed on the cam follower 203 on one side in the longitudinal direction is provided in the longitudinal direction. A second end face cam C <b> 2 that engages with an engaging convex portion 223 b formed on the cam follower 223 is formed on the other side. The first end face cam C <b> 1 and the second end face cam C <b> 2 are formed in a symmetrical shape with respect to the center line that crosses the movable cam plate 204.

  The movable cam plate 204 is formed with a pair of holes 204d and 204d formed so as to have a predetermined interval, and a pair of holes 204e and 204e formed so as to have a predetermined interval. The rear plate 219 is also formed with a pair of holes 219a and a pair of holes 219b and 219b at positions corresponding to the pair of holes 204d and 204d. . The first guide shaft 218 and the second guide shaft 238 are inserted through the pair of holes 219a of the rear plate 219, respectively. The first guide shaft 218 and the second guide shaft 238 are fixed to the rear plate 219 by caulking the end portions on the rear plate 219 side. The first guide shaft 218 and the second guide shaft 238 are inserted into the pair of holes 204d and 204d of the movable cam plate 204, and guide the movable cam plate 204 to be movable.

  In the cam plate 201, a third guide shaft 218a and a fourth guide shaft 238a are integrally formed at positions corresponding to the pair of holes 219b and 219b of the rear plate 219. The other ends of the third guide shaft 218a and the fourth guide shaft 238a are fixed by caulking into the pair of holes 219b and 219b of the rear plate 219, respectively. By the third guide shaft 218a and the fourth guide shaft 238a, the rear plate 219 and the cam plate 201 are configured to have a predetermined interval. The third guide shaft 218a and the fourth guide shaft 238a are inserted into the pair of holes 204e and 204e of the movable cam plate 204. The third guide shaft 218a and the fourth guide shaft 238a cooperate with the first guide shaft 218 and the second guide shaft 238 to move the movable cam plate 204 to the first guide shaft 218, the second guide shaft 238, and the third guide shaft 218a. The guide shaft 218a and the fourth guide shaft 238a are guided so as to be movable in the axial direction. A coil spring (biasing member) 217 is wound around the first guide shaft 218. A coil spring (biasing member) 237 is wound around the second guide shaft 238. In other words, the movable cam plate 204 is constantly pressed toward the cam plate 201 by the biasing force of the coil spring 217 and the coil spring 237.

  The movable cam plate 204 is pressed by the coil spring 217 and the coil spring 237, and the cam surface of the first end face cam C1 and the engagement convex portion 203b of the cam follower 203, and the cam face of the second end face cam C2 and the cam follower 223 are engaged. The joint convex part 223b is in contact.

  The first end face cam C1 is formed with a cam surface composed of a substantially Ω-shaped Ω-shaped convex portion or the like, and a first inclined surface portion having a higher top side in a concave portion formed in the center of the Ω-shaped convex portion. 204a, a second inclined surface portion 204b is formed on one end side of the Ω-shaped convex portion, and a third inclined surface portion 204c is formed on the other end portion side of the Ω-shaped convex portion. Similarly, the second end face cam C2 is formed with a cam surface made up of a substantially Ω-shaped Ω-shaped convex portion or the like, and the top side is raised in a concave portion formed at the center of the Ω-shaped convex portion. The first inclined surface portion 204a, the second inclined surface portion 204b on one end side of the Ω-shaped convex portion, and the third inclined surface portion 204c are formed on the other end side of the Ω-shaped convex portion.

  Since the movable cam plate 204 is always pressed by the urging force of the coil spring 217 and the coil spring 237, the end surface of the engagement convex portion 203b of the cam follower 203 is always in contact with the cam surface of the first end surface cam C1. Yes. Further, the end surface of the engagement convex portion 223b of the cam follower 223 is always in contact with the cam surface of the second end surface cam C2. As a result, the cam follower 203, the cam follower 223, and the cam plate 201 are always brought into contact with each other by the biasing force of the coil spring 217 and the coil spring 237, so that the user can open and close the first housing and the second housing. When performing, since a predetermined load (preload) is always applied, the occurrence of rattling during the opening / closing operation is prevented.

  Further, when the first mounting member 12 (first housing) and the second mounting member 13 (second housing) are in a state of being opened approximately 180 degrees, the engagement convex portion 203b of the cam follower 203 is It will be in the state engaged with the 1st slope part 204a while being located in the recessed part of the end surface cam C1. Further, the engaging convex portion 223b of the cam follower 223 is located in the concave portion of the second end face cam C2 and is engaged with the first inclined surface portion 204a. As a result, the pair of housings are stably held in a state of being opened approximately 180 degrees.

  When one surface of the first housing and one surface of the second housing face each other in the closed state (the first folded storage position), the engagement convex portion 203b of the cam follower 203 is provided. However, it will be in the state engaged with the 2nd slope 204b of the 1st end surface cam C1. Further, the engaging convex portion 223b is engaged with the second inclined surface 204b of the second end face cam C2. At this time, the cam follower 203 is pressed toward the cam plate 201 by the urging force F of the coil spring 217, but the cam plate 201 restricts the movement of the first slide shaft 214 in the axial direction. Rotate around. The cam follower 223 is pressed toward the cam plate 201 by the urging force F of the coil spring 237, but the movement of the third slide shaft 234 in the axial direction is restricted by the cam plate 201. Rotate. In other words, the first mounting member 12 (first housing) is moved in the direction around the axis of the first slide shaft 214 from the one closed state by the urging force F of the coil spring 217 and the coil spring 237. In the closing direction, a rotational force T acts so as to always swing. The second mounting member 13 (second housing) has a rotational force T so as to always swing in the direction around the axis of the third slide shaft 234 from the one closed state to the direction in which the second housing is further closed. Acts (see FIG. 11).

  Further, when the other surface of the first housing and the other surface of the second housing face each other in the closed state (second folding storage position state), the cam projecting body 203 has an engaging projection. The portion 203b is in a state of being engaged with the third inclined surface 204c of the first end face cam C1. Further, the engagement convex portion 223b is engaged with the third inclined surface 204c of the second end face cam C2. At this time, the cam follower 203 is pressed toward the cam plate 201 by the urging force F of the coil spring 217, but the cam plate 201 restricts the movement of the first slide shaft 214 in the axial direction. Rotate around. The cam follower 223 is pressed toward the cam plate 201 by the urging force F of the coil spring 237, but the movement of the third slide shaft 234 in the axial direction is restricted by the cam plate 201. Rotate. In other words, the first mounting member 12 (first housing) always swings in the direction around the axis of the first slide shaft 214 from the other closed state to the direction in which the first housing is further closed. A rotational force T acts. The second mounting member 13 (second housing) has a rotational force T so that it always swings in the direction around the axis of the third slide shaft 234 in the direction in which the second housing is further closed from the other closed state. Act.

  Thus, in one closed state or the other closed state, a rotational force is always acting in the direction around the axes of the first slide shaft 214 and the third slide shaft 234. As a result, there is no possibility that, when closed, the closed portions of the pair of housings will rattle or the pair of housings will be in a state where the mouths are open (so-called mouth open state). When the movable cam plate 204 is in one closed state or the other closed state by the first end face cam C1, the second end face cam C2, the driven cam body 203, the driven cam body 223, the coil spring 217, the coil spring 237, etc. A housing folding holding mechanism is configured to enable the first housing and the second housing to be held in a folded state (posture).

  When the user operates to open the first housing and the second housing from one closed state, the engaging convex portion 203b and the engaging convex portion 223b are connected to the second inclined surface 204b of the first end cam C1, Since the second end cam C2 moves toward the Ω-shaped convex portion side from the second slope 204b, the user can feel a click. Similarly, when the user performs an operation to open the first housing and the second housing from the other closed state, the engaging convex portion 203b is moved to the third inclined surface 204c of the first end face cam C1, and the engaging convex portion. Since the portion 223b moves from the third slope 204c of the second end face cam C2 in the direction of climbing toward the Ω-shaped convex portion, the user can feel a click. In addition, when the user operates to close in either direction from the 180 degree open state, the user moves in the direction of climbing the slope from the concave portion toward the Ω-shaped convex portion side, so that the user feels a click. You can feel it. A preload applying mechanism according to another embodiment (corresponding to the preload applying mechanism 53 of the above-described embodiment) includes a movable cam plate 204, a cam follower 203, a cam follower 223, a coil spring 217, a coil spring 237, and the like. It is configured.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment. Needless to say, changes can be made without departing from the scope and spirit of the present invention.

1, 201 ... Cam plates 1a, 201a ... First cam grooves 1b, 201b ... Second cam grooves 1c, 201c ... Third cam grooves 1d, 201d ... Fourth cam grooves 2, 27 ... Synchronous cam 3 ... First click plate 4 ... 2nd click plate 5 ... 1st synchronous gear (1st sector gear)
6 ... Second synchronous gear (second sector gear)
7 ... Link shaft plate 8 ... Fixed plate
10, 30 ... Link plate
DESCRIPTION OF SYMBOLS 12 ... 1st attachment member 13 ... 2nd attachment member 14, 214 ... 1st slide axis | shaft 15, 35 ... Synchronization pin 16 ... 2nd slide axis | shaft 17, 37 ... Fixing pin 18, 38 ... Linking pin 19 ... Link axis 20 ... Gear shaft 22, 42 ... Coil spring 28 ... Third click plate 29 ... Fourth click plate 30 ... Link plate
34, 234 ... third slide shaft 36 ... fourth slide shaft 50, 250 ... hinge mechanism 51 ... first folding operation interlocking mechanism 52, 252 ... second folding operation interlocking mechanism 53 ... preload applying mechanism 101 ... first housing
102 ... 2nd housing | casing 203 ... Cam follower 204 ... Movable cam plate 216 ... Slide shaft part (2nd slide shaft)
217 ... Coil spring (biasing member)
219 ... Rear plate 223 ... Cam follower 236 ... Slide shaft (fourth slide shaft)
237 ... Coil spring (biasing member)

Claims (10)

A first housing (101) containing electronic components;
The hinge mechanism (50, 250) can be folded within an angle of 360 degrees relative to the folding center line (CC) together with the swinging of the first casing, and incorporates electronic components. In an electronic device comprising the second housing (102),
The hinge mechanism is
A first slide shaft (14, 214) disposed on a side surface of the first housing and moving along the first cam surface;
A second slide shaft (16, 216) which is arranged so that the first slide shaft and a center line are parallel to each other and moves along the first cam surface;
A third slide shaft (34, 234) disposed on a side surface of the first housing and moving along the second cam surface;
A fourth slide shaft (36, 236), which is disposed so that the third slide shaft and a center line are parallel to each other and moves along the second cam surface;
A substantially rectangular plate, wherein the first cam surface that is a cam groove and the second cam surface that is a cam groove are formed symmetrically with respect to the folding center line ( 1, 201),
A folding operation interlocking mechanism (51, 52, 252) for interlocking the swinging motion of the first housing and the swinging motion of the second housing;
A preload applying mechanism for applying a predetermined load in the axial direction of the first slide shaft and the second slide shaft at all times when performing the opening / closing operation of the first housing and the second housing; Prepared,
The first cam surface is a first cam groove (1a, 201a) that is a through groove for guiding the first slide shaft, and a second cam groove that is a concave groove for guiding the second slide shaft. (1b, 201b)
The second cam surface is a third cam groove (1c, 201c) that is a through groove for guiding the third slide shaft, and a fourth cam groove that is a concave groove for guiding the fourth slide shaft. (1d, 201d) The electronic device characterized by the above-mentioned. The electronic device according to claim 1,
The second cam groove and the fourth cam groove are V-shaped cam grooves formed in a V shape or a substantially V shape in which a V-shaped tip faces the folding center line and faces each other,
The first cam groove is a cam groove that has a groove width for guiding the first slide shaft in the center of the V-shape of the second cam groove, and is formed in a linear shape and / or a curved shape. Yes,
The third cam groove is a cam groove that has a groove width for guiding the third slide shaft at the center of the V-shape of the fourth cam groove, and is formed in a linear shape and / or a curved shape. Electronic equipment characterized by being. The electronic device according to claim 2,
In the second cam groove, one cam groove portion formed in a linear shape and / or a curved shape of the V-shaped cam groove has one surface of the first housing and one surface of the second housing. When the first folding storage position folded so as to face each other and the first housing and the second housing swing between an open position opened 180 degrees or substantially 180 degrees, 2 is a portion for guiding the slide shaft, and the other cam groove portion formed in a linear shape and / or a curved shape of the V-shaped cam groove is connected to the other surface of the first housing and the second housing. A portion for guiding the second slide shaft when swinging between the second folding storage position folded so as to face the other surface of the body and the open position;
When the one cam groove portion formed in a linear shape and / or a curved shape of the substantially V-shaped cam groove swings between the first folding position and the opening position, A portion for guiding the fourth slide shaft, and the other cam groove portion formed in a linear shape and / or a curved shape of the substantially V-shaped cam groove is formed between the second folding position and the opening position. An electronic device characterized by being a part for guiding the fourth slide shaft when swinging between them. The electronic device according to claim 1, wherein
The preload applying mechanism is configured such that the second slide shaft and the fourth slide shaft always apply a load in a direction in which the cam plate is pressed against the cam plate. machine. The electronic device according to claim 4,
The preload applying mechanism includes a first urging member for urging the end surface of the second slide shaft with a predetermined urging force on the bottom surface of the concave groove of the second cam groove, and the fourth cam groove. An electronic device, wherein a second urging member for urging the end surface of the fourth slide shaft with a predetermined urging force is provided on a bottom surface of the concave groove. The electronic device according to claim 5,
When the first casing and the second casing are opened and closed at a predetermined position on the bottom surface of the concave groove, the second slide shaft comes into contact with the second cam groove to feel a click. A first click generating part is generated for generating,
When the first casing and the second casing are moved to open and close at a predetermined position on the bottom surface of the concave groove, the fourth slide shaft comes into contact with the fourth cam groove to feel a click. An electronic device characterized in that a second click feeling generating part for generating the electronic device is formed. The electronic device according to claim 1,
The second slide shaft (216) is provided integrally with a first cam follower (203) connected to the first slide shaft (214).
The fourth slide shaft (236) is provided integrally with a second cam follower (223) connected to the third slide shaft (234),
The preload applying mechanism applies a load to the first cam follower and the second cam follower in the axial direction of the first slide shaft and the third slide shaft by a biasing force of a biasing member. An electronic device characterized by The electronic device according to claim 7,
The first cam follower is formed with a first convex portion (203b) formed so as to protrude to the opposite side of the direction in which the second slide shaft protrudes,
The second cam follower is formed with a second convex portion (223b) formed so as to protrude to the opposite side of the direction in which the fourth slide shaft protrudes,
A first end cam (C1) that is provided so as to be movable back and forth in the axial direction of the first slide shaft and the third slide shaft, and has a cam surface that comes into contact with the first convex portion; and the second convex portion A movable cam plate (204) formed with a second end face cam (C2) formed with a cam surface that comes into contact with
The first convex portion and the inclined surface formed at a predetermined position of the first end face cam engage with each other, and the inclined surface formed at the predetermined position of the second convex portion and the second end face cam. Are engaged with each other so that one surface of the first housing and one surface of the second housing face each other, or the first folding storage position of the first housing A housing folding holding mechanism is provided for enabling the folded state to be held at the second folding storage position folded so that the other surface and the other surface of the second housing face each other. An electronic device characterized by that. The electronic apparatus according to any one of claims 1 to 8,
In the folding operation interlocking mechanism, in the first slide shaft and the third slide shaft, one of the first slide shaft or the third slide shaft extends from the first cam groove or the third cam groove. A first fold for moving in the direction in which the third cam groove or the first cam groove extends in conjunction with the other of the third slide shaft or the first slide shaft when moved in the direction of movement. When one of the operation interlocking mechanism (51) and the first slide shaft or the third slide shaft swings around the central axis, the other of the third slide shaft or the first slide shaft is centered. An electronic device comprising: a second folding operation interlocking mechanism (52, 252) that swings in an interlocking manner in the direction around the axis. The electronic device according to claim 9,
The first folding operation interlocking mechanism includes a link shaft plate swingably provided on a main body of the hinge mechanism, a first link plate provided between the first slide shaft and the link shaft plate, A mechanism interlocked by a link mechanism having a second link plate provided between the third slide shaft and the link shaft plate;
The second folding operation interlocking mechanism includes a pair of synchronous gears provided rotatably on the main body, and an engaging portion provided on one of the pair of synchronous gears provided on the first slide shaft. An interlocking mechanism having one synchronization cam that engages with the other synchronization cam that is provided on the third slide shaft and that engages with an engagement portion formed on the other synchronization gear of the pair of synchronization gears. Electronic equipment characterized by being.

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