JP2013164144A - Electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a first casing and a second casing to prevent interference between the casings during swinging motion, and to allow the casings to approach each other when opened at approximately 180 degrees.SOLUTION: Electronic equipment includes a first casing 101 and a second casing 102 foldable through a hinge mechanism 1. The hinge mechanism includes: a first slide shaft 13 and a second slide shaft 14 which move along a first cam face 11; a third slide shaft 33 and a fourth slide shaft 34 which move along a second cam face 31; a cam plate 12 in which the first cam face and the second cam face are formed; a fixing plate 21 spaced at a given interval apart from the cam plate and fixed integrally with the cam plate; a folding operation interlocking mechanism provided in between the cam plate and the fixing plate and synchronized and interlocked with the swinging motions of the first and the second casing; and an interlocking mechanism load application member 20 which is provided in between the folding operation interlocking mechanism and the fixing plate and always applies a load in a given direction to the folding operation interlocking mechanism.

Description

  The present invention relates to an openable electronic device including a parallel biaxial hinge device in an electronic device including two housings. More specifically, the first housing and the second housing can be prevented from interfering with each other when the first housing and the second housing are swinging, and the first housing and the second housing are opened approximately 180 degrees. It is related with the electronic device which can make a housing | casing approach at the time.

  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.

Techniques relating to small electronic devices and biaxial hinge mechanisms in which a pair of housings are connected so as to be openable and closable via a parallel biaxial hinge mechanism are known (see, for example, Patent Documents 1 to 3). 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, when the casings are opened 180 degrees, a uniform display screen is formed in which the display screens of the pair of casings are continuous to increase the size of the display screen. It was a configuration that could not be.
On the other hand, technologies relating to an information terminal device and a mobile terminal that aim to reduce the size of the device and enlarge the display screen are also known (see, for example, Patent Documents 4 and 5).

JP 2010-78112 A JP 2006-64000 A JP 2008-14449 A JP 2003-298700 A JP 2006-174435 A

  However, the information terminal device of patent document 4 is a thing of a uniaxial hinge mechanism, and is a thing of the structure from which a part of hinge part protrudes from a display part. In addition, this information terminal device requires an automatic slide mechanism in addition to the hinge mechanism, there is a possibility that the structure is complicated and the reliability may be reduced, and the device may not be miniaturized much. was there. Further, this information terminal device is not very good in the operability of the opening / closing operation. The mobile terminal of Patent Document 5 is of a uniaxial hinge mechanism, and has a configuration in which hinges provided at both ends protrude to the display unit side, and visibility, workability, and operability are not good. was there. As described above, there is still room for improvement in the conventional openable electronic device.

The present invention has been made to solve the above-described problems, and achieves the following object.
It is an object of the present invention to prevent interference between a pair of casings during an opening / closing operation in an open / close type electronic device provided with a parallel biaxial hinge device, and a pair when the casings are opened approximately 180 degrees. An object of the present invention is to provide an electronic device capable of bringing the casings of the two units as close as possible.

  Another object of the present invention is to provide an electronic device that can synchronize and synchronize the opening and closing operations of a pair of housings and prevent rattling when the opening and closing operations are performed.

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 containing the electronic parts and the hinge mechanism can be folded within a relative angle of about 180 degrees around the folding center line in conjunction with the swing of the first housing, and the electronic parts are built in. In the electronic device including the second housing, the hinge mechanism is disposed on both side surfaces of the first housing, and moves along the first cam surface. The first slide shaft and the center line are arranged on both side surfaces at a position farther from the first slide shaft with respect to the folding center line, and move along the first cam surface. A second slide shaft, a third slide shaft disposed on both side surfaces of the second housing and moving along the second cam surface, and both side surfaces of the second housing on the basis of the folding center line At a position farther from the third slide shaft, and A fourth slide shaft that is arranged so that a slide shaft and a center line are parallel to each other and moves along the second cam surface; a first plate that is a substantially rectangular plate and is a cam groove; The second cam surface which is a cam groove is formed in a symmetrical position with respect to the folding center line, and the cam plate is fixed integrally with the cam plate with a predetermined interval. A folding operation interlocking mechanism provided between the plate, the cam plate, and the fixed plate, wherein the swinging motion of the first housing and the swinging motion of the second housing are synchronized with each other. The folding operation interlocking mechanism and the fixed plate, and the interlocking mechanism load applying member for always applying a load in a predetermined direction to the folding operation interlocking mechanism. Features.

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 folding operation interlocking mechanism is movably provided between the cam plate and the fixed plate, extends in the longitudinal direction of the cam plate, and passes through the first slide shaft; A synchronization plate extending in the longitudinal direction and having a second elongated hole through which the third slide shaft is inserted is provided between the cam plate and the fixed plate, and the synchronization plate is connected to the cam plate. A synchronization plate guide for guiding the movable plate in a direction perpendicular to the longitudinal direction of the first and second slide shafts or the third slide shaft to convert a swinging motion into a linear motion of the synchronization plate, The linear motion of the synchronizing plate is converted into a swing motion of the third slide shaft or the first slide shaft and interlocked.

The electronic device of the third aspect of the present invention is the second aspect of the present invention.
The interlock mechanism load applying member is an urging member provided integrally with the synchronizing plate between the fixed plate and the synchronizing plate, and urging the synchronizing plate toward the cam plate. Features.

The electronic device of the fourth aspect of the present invention is the first aspect of the present invention.
The folding operation interlocking mechanism is supported by a central portion of the cam plate and has a central axis on which a guide surface is formed in a direction orthogonal to the longitudinal direction of the cam plate, and the second slide on one end side. One second link member, the shaft of which is swingably connected, the other second link member, of which the fourth slide shaft is swingably connected to one end side, and the center axis A first link member that swings and is swingably connected to the other end side of the one second link member and the other end side of the other second link member; and the longitudinal direction A first elongated hole through which the first slide shaft is inserted, a second elongated hole through which the third slide shaft is inserted, and a guide groove guided by the guide surface. A synchronization plate formed, and the first slide shaft or the third slide The oscillating motion of the id shaft is converted into the linear motion of the synchronizing plate, and the linear motion of the synchronizing plate is converted into the oscillating motion of the third slide shaft or the first slide shaft to be interlocked. And

The electronic device of the fifth aspect of the present invention is the fourth aspect of the present invention.
The interlocking mechanism load applying member is provided between the folding motion interlocking mechanism and the fixed plate, and is in contact with a first contact surface portion formed on one side of the one second link member. A cam member having a first inclined surface, a cam member having a second inclined surface portion for contacting a second contact surface portion formed on one side of the other second link member, and an axial direction of the central axis A biasing member that constantly biases the cam member toward the cam plate, and applies a load in a predetermined rotational direction to the one second link member and the other second link member. It is characterized by being.

The electronic device of the present invention 6 is the present invention according to any of the first to fifth aspects of the present invention.
The third slide shaft is disposed at a symmetrical position with respect to the first slide axis with the folding center line as a center, and the fourth slide shaft has the second slide with the folding center line as a center. The cam plate is arranged in a symmetrical position with respect to the axis, and the first cam surface and the second cam surface are formed in a symmetrical position around the folding center line. It is characterized by.

The electronic device according to a seventh aspect of the present invention includes:
When the second slide shaft and the fourth slide shaft swing at the farthest distance from the folding center line at the intermediate angular position of the swing of the first housing and the second housing, The corners of the first casing and the second casing at a swing center point on the folding center line have a shape that does not overlap the folding center line.

The electronic device of the present invention 8 is the electronic device according to the present invention 1 to 7,
The first cam surface has a first cam groove for guiding the first slide shaft, and a second cam groove for guiding the second slide shaft, and the second cam surface has the third slide shaft. A third cam groove for guiding and a fourth cam groove for guiding the fourth slide shaft are provided.

  The electronic device according to the present invention is a foldable electronic device including a parallel biaxial hinge device, and the first housing and the second housing are in a “closed state” in which the first housing and the second housing are closed. In the process of opening and closing from the “open state” opened approximately 180 degrees or from the “open state” to the “closed state”, the first housing and the second housing are interlocked with the swinging motion of the first housing. The body and the second housing are moved away from each other to prevent interference between the housings. In the “open state”, the casings can be brought as close as possible to each other. In an electronic device in which both casings are provided with display screens, the display screens are integrated and flush with a large display screen. It becomes possible to form.

  In addition, the electronic device of the present invention includes a folding operation interlocking mechanism and an interlocking mechanism load applying member, and the opening / closing operation of the pair of housings is a synchronized interlocking operation and prevents rattling when the opening / closing operation is performed. Can do. That is, the opening / closing operation is smooth, the reliability is high, and the hinge mechanism can be downsized. The touch when the user opens and closes the electronic device can be improved.

FIG. 1 is a front view showing a hinge portion of a foldable electronic device according to the present invention. FIG. 2 is an exploded view showing the structure of the hinge mechanism according to Embodiment 1 of the present invention. FIG. 3 is a diagram for explaining the relationship between the opening / closing operation of the attachment member (housing) and the cam surface in the first and second embodiments, where (a) is a closed state, (b) is an intermediate angle state, (C) is explanatory drawing seen from the arrow A direction in FIG. 1 which showed the open state of about 180 degree | times. FIG. 4 is an explanatory diagram for explaining the relationship between the synchronization plate, the leaf spring member, and the fixed plate in the first embodiment. FIG. 5 is an exploded view showing the structure of the hinge mechanism in the second embodiment. 6A and 6B are diagrams for explaining the relationship between the opening / closing operation of the attachment member (housing) and the movement operation of the synchronization plate according to the second embodiment, where FIG. 6A is a closed state, and FIG. 6B is an intermediate angle state. (C) is the side view seen from the arrow B direction in FIG. 5 which showed the open state of about 180 degree | times. FIG. 7 is an explanatory diagram for explaining a relationship between the cam member and the second link member according to the second embodiment.

Hereinafter, the first and second embodiments of the present invention will be described in detail with reference to the drawings.
In the description of the first and second embodiments, the side approaching the side surface of the electronic device in the direction orthogonal to the side surface of the electronic device is described as the other side, and the side away from this side surface (the opposite side surface side) Will be described as one side.

[Embodiment 1]
A first embodiment of a foldable electronic device will be described with reference to FIGS.
FIG. 1 is a front view showing a hinge portion of a foldable electronic device according to the present invention. FIG. 2 is an exploded view showing the structure of the hinge mechanism according to Embodiment 1 of the present invention. 3A and 3B are diagrams for explaining the relationship between the opening / closing operation of the attachment member (housing) and the cam surface in the first embodiment, where FIG. 3A is a closed state, FIG. 3B is an intermediate angle state, and FIG. ) Is an explanatory diagram viewed from the direction of arrow A in FIG. FIG. 4 is an explanatory diagram for explaining the relationship between the synchronization plate, the leaf spring member, and the fixed plate in the first embodiment.

  The case of the foldable electronic device 100 is a pair of cases, and includes a first case 101 and a second case 102 that open and close via the hinge mechanism 1. The first casing 101 and the second casing 102 are opened and closed by the hinge mechanism 1 in an angle range within about 180 degrees (for example, 180 ± 5 degrees) relative to the folding center line CC. 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 105. The first housing 101 and the second housing 102 include a display unit 103 and a display unit 104, respectively. The first housing 101 and the second housing 102 are connected via the hinge mechanism 1 between a portable (storage) state for folding and carrying the electronic device 101 and a use state for opening and using the electronic device 101. Opens and closes. The hinge mechanism 1 is provided at both ends of the side surface of the electronic device 101.

  The hinge mechanism 1 includes a first mounting member 10 fixedly disposed on the rear surface of the first housing 101 (rear surface of the display unit 103), and a rear surface of the second housing 102 (rear surface of the display unit 104). And a second mounting member 30 that is fixedly disposed. The cam plate 12 and the fixed plate 21 are integrated with each other with a fourth shaft portion 16d, which is a large-diameter portion of the four support shafts 16, and a second shaft portion 16b having a smaller diameter than the fourth shaft portion 16d. The hinge body of the hinge mechanism 1 is fixed. That is, the cam plate 12 and the fixed plate 21 are provided so as to have a predetermined interval and be parallel to each other. Between the cam plate 12 and the fixed plate 21, connecting members 15 and 35, a synchronization plate 18 and the like are provided.

  The cam plate 12 is a substantially rectangular plate, and a first cam surface 11 and a second cam surface 31 formed through the plate are formed. At predetermined positions at the four corners of the cam plate 12, holes 12a, which are through-holes, are formed. A first shaft portion 16a formed on the other side of the support shaft 16 and having a smaller diameter than the fourth shaft portion 16d is inserted into the hole portion 12a. The end portion of the first shaft portion 16a is caulked to the hole portion 12a so that the first shaft portion 16a does not come out of the cam plate 12. The fixed plate 21 is a substantially rectangular plate. At predetermined positions at the four corners of the fixing plate 21, holes 21a that are through holes are formed.

  Further, the hole 12a of the cam plate 12 and the hole 21a of the fixing plate 21 are opened with the same pitch dimension. A third shaft portion 16c formed on one side of the support shaft 16 and having a smaller diameter than the second shaft portion 16b is inserted into the hole portion 21a. The support shaft 16 is configured not to come out of the fixed plate 21 by caulking the end portion of the third shaft portion 16c to the hole portion 21a. Synchronous plate guides 19 and 19 are disposed at both ends of the fixed plate 21 in the longitudinal direction, respectively. The synchronization plate guides 19 and 19 are used to guide the synchronization plate 18 when the synchronization plate 18 described later moves in a direction perpendicular to the longitudinal direction of the fixed plate 21. The synchronization plate guide 19 is formed with two holes 19 a that are through holes, and the holes 19 a are inserted into the second shaft portion 16 b of the support shaft 16.

  The first mounting member 10 includes a main body plate portion 10a to which the first housing 101 is fixed, and a shaft body mounting portion 10b in which a first slide shaft 13 and a second slide shaft 14 to be described later are respectively provided. ing. The first mounting member 10 is a member formed integrally with the main body plate portion 10a and the shaft body mounting portion 10b at an angle of 90 degrees, that is, connected in a L-shape by the connecting portion. Bolt holes 10 c that are two through holes into which the shaft portions of the bolts 106 for fixing the first housing 101 are inserted are formed in the main body plate portion 10 a of the first mounting member 10. The shaft body attaching part 10b is formed with a first hole part 10d and a second hole part 10e which are through holes. The first shaft portion 13a of the first slide shaft 13 is inserted through the first hole portion 10d, and the first shaft portion 14a of the second slide shaft 14 is inserted through the second hole portion 10e.

  The second attachment member 30 includes a main body plate portion 30a to which the second housing 102 is fixed, and a shaft body attachment portion 30b on which a third slide shaft 33 and a fourth slide shaft 34 described later are provided. The second attachment member 30 is a member formed integrally with the main body plate portion 30a and the shaft body attachment portion 30b forming an angle of 90 degrees, that is, connected in an L shape at the connection portion. Bolt holes 30 c that are two through holes into which the shaft portions of the bolts 106 for fixing the second housing 102 are inserted are formed in the main body plate portion 30 a of the second mounting member 30. The shaft body attaching portion 30b is formed with a first hole portion 30d and a second hole portion 30e which are through holes. The first shaft portion 33a of the third slide shaft 33 is inserted through the first hole portion 30d, and the first shaft portion 34a of the fourth slide shaft 34 is inserted through the second hole portion 30e.

  The cam plate 12 is disposed adjacent to (in contact with) the shaft body mounting portion 10 b of the first mounting member 10 and the shaft body mounting portion 30 b of the second mounting member 30. The cam plate 12 includes a first cam surface 11 on which the first slide shaft 13 and the second slide shaft 14 are guided, and a second cam surface 31 on which the third slide shaft 33 and the fourth slide shaft 34 are guided. Is formed. The first cam surface 11 and the second cam surface 31 are formed as holes penetrating in the plate thickness direction of the cam plate 12. The first cam surface 11 and the second cam surface 31 are formed in a symmetric shape with respect to the folding center line CC (see FIG. 3). The relationship between the first cam surface 11 and the second cam surface 31, and the first slide shaft 13, the second slide shaft 14, the third slide shaft 33, and the fourth slide shaft 34 is a special feature submitted by the present applicant. This is described in detail in Japanese Patent Application No. 2011-122234 (filed on May 31, 2011), and since it is not the gist of the present invention, a detailed description thereof will be omitted.

  An arc-shaped first cam groove 11a for guiding the first slide shaft 13 and a linear second cam groove 11b for guiding the second slide shaft 14 are formed on the first cam surface 11 ( (See FIG. 3). The first slide shaft 13 and the second slide shaft 14 are arranged so that their center lines are parallel to each other. Further, the second slide shaft 14 is disposed at a position farther from the first slide shaft 13 with respect to the folding center line CC. The second cam surface 31 is formed with an arc-shaped third cam groove 31a for guiding the third slide shaft 33 and a linear fourth cam groove 31b for guiding the fourth slide shaft 34 ( (See FIG. 3). The third slide shaft 33 and the fourth slide shaft 34 are arranged so that their center lines are parallel to each other. The fourth slide shaft 34 is arranged at a position farther from the third slide shaft 33 with respect to the folding center line CC. Further, the third slide shaft 33 is disposed at a symmetrical position with respect to the first slide shaft 13 around the folding center line CC. The fourth slide shaft 34 is disposed at a symmetrical position with respect to the second slide shaft 14 with the folding center line CC as the center. The first cam surface 11 and the second cam surface 31 are in an opened state in which the first housing 101 and the second housing 103 are opened approximately 180 degrees from the folded closed state (the state of FIG. 3A) ( 3 (c)), the corners of the first casing 101 and the second casing 102 are folded at the folding center line CC at the pivot center point on the folding center line CC. The shape does not overlap.

  That is, in order to prevent the corners of the first housing 101 and the corners of the second housing 102 from interfering with each other, when the two housings are swung, the center of the second slide shaft 14 and the folding center line are provided. The distance between CC and the distance between the fourth slide shaft 34 and the folding center line CC need to be maximized. The groove shapes of the first cam surface 11 and the second cam surface 31 formed on the cam plate 12 may be formed so as to satisfy this condition. In other words, the first cam surface 11 and the second cam surface 31 are in the second slide position at an intermediate angle state of the swing of the first housing 101 and the second housing 102 (state shown in FIG. 3B). When the shaft 14 and the fourth slide shaft 34 are swung at a distance farthest from the folding center line CC, the first housing 101 and the second housing 101 are swung at the swing center point on the folding center line CC. The corner portion of the housing 102 has a shape that does not overlap the folding center line CC.

  On the fixed plate 21 side of the cam plate 12, connecting members 15 and 35 are provided in a pair. The connecting member 15 is a plate having an approximately elliptical shape, and is formed so that a hole 15a and a square hole 15b, which are through-holes, are arranged at a predetermined interval in the center line direction of the first slide shaft 13. Has been. The connecting member 35 is a plate having a substantially elliptical shape, and the center line of the third slide shaft 33 is in the parallel line direction, and the holes 35a and the square holes 35b that are through holes are arranged at a predetermined interval. It is formed as follows.

  The second slide shaft 14 includes a small-diameter shaft portion 14a and a large-diameter shaft portion 14c on the other side, and a square column portion 14b is formed on one end side of the large-diameter shaft portion 14c. After the small diameter shaft portion 14a is inserted into the second hole portion 10e of the shaft body mounting portion 10b, the end of the small diameter shaft portion 14a is caulked and the second slide shaft 14 is slid from the shaft body mounting portion 10b. The shaft 14 is configured not to come out. The second slide shaft 14 has a stepped portion of the large-diameter shaft portion 14c that is in contact with the shaft body mounting portion 10b and a shaft end of the small-diameter shaft portion 14a is caulked so that the first mounting member 10 It is attached to the shaft body attaching portion 10b.

  The large-diameter shaft portion 14 c of the second slide shaft 14 slides in a substantially linear direction within the second cam groove 11 b of the first cam surface 11. The quadrangular column portion 14b of the second slide shaft 14 is fitted in the square hole 15b. The first slide shaft 13 has the end of the first shaft portion 13a caulked after the first shaft portion 13a is inserted into the hole 15a, the first cam groove 11a, and the first hole portion 10d. The first slide shaft 13 has a stepped portion of a second shaft portion 13c having a diameter larger than that of the first shaft portion 13a abuts on the shaft body mounting portion 10b, and an end of the first shaft portion 13a of the first slide shaft 13 By caulking the portion, the first slide shaft 13 is configured not to come out from the shaft body mounting portion 10b.

  The fourth slide shaft 34 includes a small-diameter shaft portion 34a and a large-diameter shaft portion 34c on the other side, and a square column portion 34b is formed on one end side of the large-diameter shaft portion 34c. In the fourth slide shaft 34, after the small diameter shaft portion 34a is inserted into the second hole 30e of the shaft body mounting portion 30b, the end portion of the small diameter shaft portion 34a is caulked, and the fourth slide shaft extends from the shaft body mounting portion 30b. 34 is configured not to come out. The fourth slide shaft 34 has a shaft portion of the second mounting member 30 because the step portion of the large diameter shaft portion 34c is in contact with the shaft body mounting portion 30b and the shaft end of the small diameter shaft portion 34a is caulked. It is attached to the attachment part 30b. The large-diameter shaft portion 34 c of the fourth slide shaft 34 slides in the fourth cam groove 31 b of the second cam surface 31. The quadrangular column part 34b of the fourth slide shaft 34 is fitted in the square hole 35b.

  The third slide shaft 33 is caulked at the end of the first shaft portion 33a after the first shaft portion 33a is inserted into the hole 35a, the third cam groove 31a, and the first hole portion 30d. The third slide shaft 33 abuts the stepped portion of the second shaft portion 33c having a larger diameter than the first shaft portion 33a against the shaft body mounting portion 30b, and the end portion of the first shaft portion 33a of the third slide shaft 33. It is attached to the shaft body attaching part 30b by caulking. A synchronization plate 18 is arranged on the side of the fixing plate 21 of the connecting members 15 and 35 so as to be adjacent (contact) to the connecting members 15 and 35. The synchronization plate 18 has a substantially rectangular plate shape and is guided by the side surfaces of the two synchronization plate guides 19 and 19.

  The synchronization plate 18 is movable in a direction orthogonal to the longitudinal direction of the cam plate 12 (direction orthogonal to the central axis of the first slide shaft 13 and the third slide shaft 33). The synchronization plate 18 is formed with a first long hole 18a and a second long hole 18b. The first elongate hole 18a and the second elongate hole 18b are long axes in a direction parallel to or substantially parallel to the second cam groove 11b of the first cam surface 11 and the fourth cam groove 31b of the second cam surface. Is formed to extend. In other words, the first elongated hole 18a, the second elongated hole 18b, the second cam groove 11b, and the fourth cam groove 31b are provided in parallel or substantially in parallel. A third shaft portion 13b of the first slide shaft 13 is movably inserted into the first long hole 18a. A washer 17 is interposed between the step portion of the first slide shaft 13 b and the synchronization plate 18. A third shaft portion 33b of the third slide shaft 33 is movably inserted into the second elongated hole 18b. A washer 17 is interposed between the step portion of the third shaft portion 33 b and the synchronization plate 18.

  In addition, two engagement recesses 18 c that are recesses are formed on both end surfaces of the synchronization plate 18 in the longitudinal direction. A leaf spring member 20 is disposed between the synchronization plate 18 and the fixed plate 21. The leaf spring member 20 has an engagement claw 20c that engages with the engagement recess 18c of the synchronization plate 18, and is formed in a mountain shape in which the central portion 20a is convex from the end face side in the longitudinal direction. The leaf spring member (interlocking mechanism load applying member) 20 is integrated with the synchronization plate 18 by the engagement claw portion 20c engaging the engagement recess 18c. The synchronizing plate 18 and the synchronizing plate guide 19 constitute a folding operation interlocking mechanism.

  As shown in FIG. 4, a convex portion 20 b is formed on the planar central portion 20 a of the leaf spring member 20 by plastic working. The convex portion 20b is locked to the first locking hole 21b and the second locking hole 21c formed in the fixing plate 21, so that the first casing 101 and the second casing 102 are opened, or While holding the closed state with the frictional force, it is possible to create a click feeling when the convex portion 20b removes the first locking hole 21b or the second locking hole 21c. Further, even if the convex portion 20b is not locked to the first locking hole 21b and the second locking hole 21c, the convex portion 20b abuts on the fixed plate 21 by the elastic force of the leaf spring member 20, and the convex portion A smooth opening and closing operation can be performed without feeling play due to the frictional force 20b comes into contact with the surface 20d of the fixed plate 21. The leaf spring member 20 can improve the feeling when the user opens and closes the electronic device by applying an appropriate load to the folding operation interlocking mechanism side. Further, due to the synergistic effect of the folding operation interlocking mechanism and the leaf spring member 20, it is possible to suppress or prevent “rattle” when performing the opening / closing operation.

[Operation of Hinge Mechanism of Electronic Device of Embodiment 1]
The operation procedure and operation of the hinge mechanism 1 will be described with reference to FIGS. 3A shows that the first mounting member 10 to which the first casing 101 (see FIG. 1) is attached and the second mounting member 30 to which the second casing 102 (see FIG. 1) is attached are closed. It is explanatory drawing which shows the state, Comprising: It is the figure seen from the A direction of FIG. FIG. 3C is an explanatory view showing a state in which the first attachment member 10 and the second attachment member 30 are opened approximately 180 degrees. FIG. 3B shows an intermediate angle state between the state of FIG. 3A and the state of FIG. 3C (for example, the first housing 101 and the second housing 102 are opened about 90 degrees. It is explanatory drawing which shows a state.

  Either or both of the first housing 101 on the first mounting member 10 side and the second housing 102 on the second mounting member 30 side may be opened or closed. In this description, the first mounting member 10 A description will be given of an example in which an operation of opening the second attachment member 30 (second housing 102) is performed on the (first housing 101). If the second mounting member 30 is opened from the closed state in which the first mounting member 10 (first housing 101) and the second mounting member 30 (second housing 102) are closed, the leaf spring member 20 protrudes. The locking between the portion 20b and the first locking hole 21b of the fixing plate 21 is released, and a click feeling is felt. Further, the third slide shaft 33 is guided in the third cam groove 31a, the fourth slide shaft 34 is guided in the fourth cam groove 31b, and the second mounting member 30 (second housing 102) is shown in FIG. It swings in the indicated θ1 direction (clockwise direction in FIG. 3) and linearly moves in a direction away from the first mounting member 10 (first housing 101) (+ X direction in FIG. 3). The third slide shaft 33 and the fourth slide shaft 34 are moved while maintaining the relative positional relationship by the second mounting member 30, the connecting member 35, etc., so that the state shown in FIG.

  Further, the fourth slide shaft 34 is guided by the fourth cam groove 31b and linearly moves in the + X direction, and the third slide shaft 33 has an arc shape in FIG. 3 along the arc shape of the third cam groove 31a. Swing from the bottom to the center. Thus, the synchronization plate 18 is guided by the synchronization plate guide 19 and moves in one direction (+ Y direction in FIG. 3). That is, when the third slide shaft 33 swings, the movement in the X direction is absorbed by the movement of the third slide shaft 33 in the second long hole 18 b of the synchronization plate 18. Accordingly, only the force for moving in the Y direction is transmitted to the synchronization plate 18, and the synchronization plate 18 moves in one direction (+ Y direction). The synchronization plate 18 transmits the movement in this one direction (+ Y direction) to the first slide shaft 13.

  The first slide shaft 13 is moved by the first mounting member 10, the connecting member 15, etc. while maintaining the relative relationship with the second slide shaft 14, so that the synchronization plate 18 is moved in one direction (+ Y direction). The first slide shaft 13 swings from the lower part of the arc shape to the center part along the arc shape of the first cam groove 11a. When the first slide shaft 13 swings, the movement of the first slide shaft 13 in the X direction is absorbed by the movement of the first slide shaft 13 in the first long hole 18a of the synchronization plate 18, The movement of the synchronization plate 18 is not hindered. Therefore, the first attachment member 10 is also opened in conjunction with the movement of the second attachment member 30. That is, the first mounting member 10 swings in the θ2 direction (counterclockwise direction in FIG. 3) and linearly moves in a direction away from the second mounting member 30 (−X direction). In other words, the first casing 101 swings in the θ2 direction and the second casing 102 swings in the θ1 direction, and the first casing 101 and the second casing 102 linearly move in directions away from each other.

  An operation of opening the second mounting member 30 in the opening direction is performed on the first mounting member 10 so as to change from the intermediate angle state (the state of FIG. 3B) to the open state (the state of FIG. 3C). Then, the third slide shaft 33 and the fourth slide shaft 34 are guided by the third cam groove 31a and the fourth cam groove 31b, and finally become the state of FIG. When the second mounting member 30 is opened from the state shown in FIG. 3B with respect to the first mounting member 10, the third slide shaft 33 is moved into the third cam groove 31 a and the fourth slide shaft 34 is moved into the second position. Guided by the four cam grooves 31b, the second mounting member 30 swings in the θ1 direction and linearly moves in a direction approaching the first mounting member 10 (−X direction).

  The third slide shaft 33 and the fourth slide shaft 34 are moved while maintaining the relative positional relationship by the second mounting member 30, the connecting member 35, and the like, so that the state shown in FIG. Further, the fourth slide shaft 34 is guided by the fourth cam groove 31b and linearly moves in the −X direction, and the third slide shaft 33 follows the arc shape of the third cam groove 31a, and the arc shape in FIG. The synchronization plate 18 is guided by the synchronization plate guide 19 and moves in one direction (+ Y direction). That is, when the third slide shaft 33 swings, the movement in the X direction is absorbed by the movement of the third slide shaft 33 in the second long hole 18 b of the synchronization plate 18. Accordingly, only the force moving in the Y direction is transmitted to the synchronization plate 18, and the synchronization plate 18 moves in the + Y direction. The synchronization plate 18 transmits the movement in the + Y direction to the first slide shaft 13.

  The first slide shaft 13 is moved while maintaining the relative relationship with the second slide shaft 14 by the first mounting member 10, the connecting member 15, etc., so that the first slide is moved when the synchronization plate 18 moves in the + Y direction. The shaft 13 swings upward from the center portion of the arc shape along the arc shape of the first cam groove 11a. When the first slide shaft 13 swings, the movement of the first slide shaft 13 in the X direction is absorbed by the movement of the first slide shaft 13 in the first long hole 18a of the synchronization plate 18, The movement of the synchronization plate 18 is not hindered. Therefore, the first attachment member 10 is also opened in conjunction with the movement of the second attachment member 30. That is, the first mounting member 10 swings in the θ2 direction and linearly moves in a direction approaching the second mounting member 30 (+ X direction). When the first mounting member 10 (first housing 101) and the second mounting member 30 (second housing 102) are in the open state, the convex portion 20b of the leaf spring member 20 becomes the second locking hole of the fixing plate 21. It is latched by 21c and keeps the open state. In other words, the first casing 101 swings in the θ2 direction, the second casing 102 swings in the θ1 direction, and the first casing 101 and the second casing 102 linearly move in directions approaching each other. By this swinging operation, there is no gap between the first housing 101 and the second housing 102. That is, the display unit 103 of the first housing 101 and the display unit 104 of the second housing 102 can be brought as close as possible.

  When performing the operation of closing the first housing 101 and the second housing 102 from the open state (the state of FIG. 3C) to the closed state (the state of FIG. 3A), Only the operation procedure and the operation opposite to the operation are performed, and the description is omitted.

[Embodiment 2]
A second embodiment of the foldable electronic device will be described with reference to FIGS. 5 is an exploded view showing the structure of the hinge mechanism 5 in the second embodiment, and FIG. 6 shows the relationship between the opening / closing operation of the mounting member (housing) and the movement operation of the synchronization plate in the second embodiment. It is a figure for explanation, (a) is a closed state, (b) is an intermediate angle state, (c) is a side view seen from the direction of arrow B in FIG. FIG. 6 is an explanatory diagram for explaining a relationship between a cam member and a second link member. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The first casing 101 and the second casing 102 are opened and closed by the hinge mechanism 5 in an angle range within about 180 degrees (for example, 180 ± 5 degrees) relative to the folding center line CC. Can be folded. The hinge mechanism 5 includes a first attachment member 50 provided on the rear surface of the first housing 101 (rear surface of the display unit 103) and a second attachment member provided on the rear surface of the second housing 102 (rear surface of the display unit 104). 70. Further, the cam plate 52 and the fixed plate 65 are integrally fixed with a third shaft portion 57 c which is a large diameter portion of the four support shafts 57, and constitute a hinge body of the hinge mechanism 5. That is, the cam plate 52 and the fixed plate 65 are provided so as to have a predetermined interval and be parallel to each other. Between the cam plate 52 and the fixed plate 65, a first link member 59, connecting plate members 58 and 78, second link members 60 and 80, a cam member 63, and the like are provided.

  The cam plate 52 is a rectangular plate, and the first cam surface 51 and the second cam surface 71 are formed symmetrically with respect to the folding center line CC (see FIG. 3). At predetermined positions at the four corners of the cam plate 52, hole portions 52b, which are through holes, are formed. A first shaft portion 57a having a smaller diameter than the third shaft portion 57c formed on the other side of the support shaft 57 is inserted into the hole portion 52b, and the end portion of the first shaft portion 57a is caulked to thereby form a cam. The plate 52 is fixed so as not to come off. The fixed plate 65 is a rectangular plate. At predetermined positions at the four corners of the fixing plate 65, hole portions 65b that are through holes are formed. Further, the hole 52b of the cam plate 52 and the hole 65b of the fixing plate 65 are opened with the same pitch dimension. A second shaft portion 57b formed on one side of the support shaft 57 is inserted into the hole portion 65b, and the end of the second shaft portion 57b is caulked so that the support shaft 57 is pulled out from the fixed plate 65. Is configured to not.

  In the center of the cam plate 52, a central hole portion 52a that is a through hole is formed. A central hole 65 a that is a through hole is formed in the center of the fixing plate 65. A central shaft 56 is inserted into the central hole portion 52a from the other side toward one side. The central shaft 56 is a shaft body in which a head portion 56b, a first shaft portion 56a, and a second shaft portion (not shown) having a smaller diameter than the first shaft portion 56a are formed, and the second shaft portion is a fixed plate 65. The center hole 65a is inserted. On the head portion 56b of the central shaft 56, a two-surface width portion 56c in which the head portion is cut into two surfaces is formed. A groove 54c of a synchronization plate 54, which will be described later, is fitted to the two-surface width portion 56c, and serves as a guide surface for linear movement of the synchronization plate 54. The second shaft portion of the central shaft 56 is configured so as not to come out of the fixed plate 65 by being caulked at the end face after being inserted into the central hole portion 65 a of the fixed plate 65.

  The first attachment member 50 includes a main body plate portion 50a to which the first housing 101 is fixed, and a shaft body attachment portion 50b in which a first slide shaft 53 and a second slide shaft 55, which will be described later, are provided. ing. The first attachment member 50 is a member in which the main body plate portion 50a and the shaft body attachment portion 50b are connected by an L-shaped connection portion 50f, and both are integrally formed. Bolt holes 50c, which are through holes into which the shaft portions of the bolts 106 for fixing the first housing 101 are inserted, are formed in the main body plate portion 50a of the first mounting member 50. A first shaft portion 53a of the first slide shaft 53 is inserted into the shaft body mounting portion 50b, and a first hole portion (not shown) which is a through hole and a first shaft portion (see FIG. (Not shown) is inserted to form a second hole 50e, which is a through hole.

  The second mounting member 70 includes a main body plate portion 70a to which the second housing 102 is fixed, and a shaft body mounting portion 70b on which a third slide shaft 73 and a fourth slide shaft 75 described later are provided. The second mounting member 70 is a member formed integrally by connecting the main body plate portion 70a and the shaft body mounting portion 70b with an L-shaped connecting portion 70f. Bolt holes 70c, which are through holes into which the shaft portions of the bolts 106 for fixing the second housing 102 are inserted, are formed in the main body plate portion 70a of the second mounting member 70. A first hole portion 70d through which the first shaft portion 73a of the third slide shaft 73 is inserted and a first shaft portion 75a of the fourth slide shaft 75 are inserted into the shaft body attaching portion 70b and are through holes. Two holes 70e are formed.

  On the fixing plate 65 side (one side) of the shaft body mounting portion 50b of the first mounting member 50 and the shaft body mounting portion 70b of the second mounting member 70, the shaft body mounting portion 50b and the shaft body mounting portion 70b are connected. A cam plate 52 is provided adjacently. The cam plate 52 includes a first cam surface 51 on which the first slide shaft 53 and the second slide shaft 55 are guided, and a second cam surface 71 on which the third slide shaft 73 and the fourth slide shaft 75 are guided. Is formed. The first cam surface 51 and the second cam surface 71 are formed in a symmetrical shape with respect to the folding center line CC (see FIG. 3). The first cam surface 51 is formed with an arc-shaped first cam groove 51 a for guiding the first slide shaft 53 and a linear second cam groove 51 b for guiding the second slide shaft 55. The second cam surface 71 is formed with an arc-shaped third cam groove 71a for guiding the third slide shaft 73 and a linear fourth cam groove 71b for guiding the fourth slide shaft 75.

  The first slide shaft 53 and the second slide shaft 55 are arranged so that the center lines are parallel to each other. The second slide shaft 55 is disposed at a position farther from the first slide shaft 53 with respect to the folding center line CC. The third slide shaft 73 and the fourth slide shaft 75 are arranged so that their center lines are parallel to each other. The fourth slide shaft 75 is arranged at a position farther from the third slide shaft 73 with respect to the folding center line CC. The third slide shaft 73 is disposed at a symmetrical position with respect to the first slide shaft 53 around the folding center line CC. The fourth slide shaft 75 is disposed at a symmetrical position with respect to the second slide shaft 55 around the folding center line CC. The first cam surface 51 and the second cam surface 71 are approximately 180 from the closed state in which the first housing 101 and the second housing 103 are folded (the state shown in FIGS. 3A and 6A). The first casing 101 and the second casing at the swing center point on the folding center line CC when swinging to the opened state (the state shown in FIGS. 3C and 6C). The corner portion 102 has a shape that does not overlap the folding center line CC.

  That is, when the first casing 101 and the second casing 102 are swung to an intermediate angular position in order to prevent the corners of the first casing 101 and the corners of the second casing 102 from interfering with each other. The distance between the center of the second slide shaft 55 and the folding center line CC and the distance between the fourth slide shaft 75 and the folding center line CC need to be maximized. The groove shapes of the first cam surface 51 and the second cam surface 71 formed on the cam plate 52 may be formed so as to satisfy this condition. In other words, the first cam surface 51 and the second cam surface 71 are in an intermediate angle state of the swinging of the first housing 101 and the second housing 102 (the states of FIGS. 3B and 6B). In the position, when the second slide shaft 55 and the fourth slide shaft 75 are swung at a distance farthest from the folding center line CC, the first slide shaft 55 is located at the swing center point on the folding center line CC. The corners of the casing 101 and the second casing 102 are shaped so as not to overlap the folding center line CC.

  On the fixed plate 65 side of the cam plate 52, connecting plate members 58 and 78 are provided in a pair. One connecting plate member 58 is a plate having a substantially elliptical shape, and is formed so that a stepped hole 58a and a hole 58b have a predetermined interval in the long axis direction. The stepped hole portion 58a and the hole portion 58b of the connecting plate member 58 have the same pitch size as the first hole portion and the second hole portion 50e of the first mounting member 50. The other connecting plate member 78 is a plate having an approximately elliptical shape, and is formed such that the stepped hole portion 78a and the hole portion 78b have a predetermined interval in the major axis direction. The stepped hole 78a and the hole 78b of the connecting plate member 78 have the same pitch dimension as the first hole 70d and the second hole 70e of the second mounting member 70.

  A first link member 59 is provided between the contact plate members 58 and 78. The first link member 59 is a plate having a substantially elliptical shape, and a central hole 59a is formed at the center, and holes 59b and 59b are formed at both ends in the major axis direction. On the fixing plate 65 side of the contact plate members 58 and 78 and the first link member 59, the second link members 60 and 80 are provided in a pair. One second link member 60 is a substantially L-shaped plate, and is formed with a first hole 60a and a second hole 60b. The other second link member 80 is a substantially L-shaped plate, and is formed with a first hole 80a and a second hole 80b.

  A synchronization plate 54 is provided on the other side of the shaft body mounting portion 50 b of the first mounting member 50 and the shaft body mounting portion 70 b of the second mounting member 70. The synchronization plate 54 is an oval member in which a step portion whose center protrudes to the other side is formed. A groove portion (guide groove) 54c into which the two-surface width portion (guide surface) 56c of the central shaft 56 is fitted is formed at the center portion. The two-surface width portion 56 c of the central shaft 56 and the groove portion 54 c of the synchronization plate 54 constitute a guide portion that guides the synchronization plate 54. Moreover, the 1st long hole 54a and the 2nd long hole 54b are each formed in the surface by the side of an edge part. The first long hole 54 a is a hole through which the first shaft portion 53 a of the first slide member 53 is inserted. The second long hole 54b is a hole through which the first shaft portion 73a of the third slide member 73 is inserted (see FIG. 6). The first long hole 54a and the second long hole 54b are long in a direction parallel to or substantially parallel to the second cam groove 51b of the first cam surface 51 and the second cam groove 71b of the second cam surface 71. The shaft is formed to extend. In other words, the first long hole 54a and the second long hole 54b, and the second cam groove 51b and the second cam groove 71b are provided in parallel or substantially in parallel. In the second embodiment, the synchronization plate 54, the central shaft 56, the connecting plate members 58 and 78, the first link member 59, the second link members 60 and 80, the connecting shafts 61a and 61b, and the like constitute a folding operation interlocking mechanism. .

  The first slide shaft 53 includes a head 53c, a first shaft portion 53a, and a second shaft portion 53b having a smaller diameter than the first shaft portion. The second slide shaft 55 is a shaft body in which a head, a first shaft portion, a second shaft portion having a smaller diameter than the first shaft portion, and a third shaft portion having a smaller diameter than the second shaft portion are formed. Is the same as a fourth slide shaft 75 described later. The third slide shaft 73 is formed with a head portion 73c, a first shaft portion 73a, and a second shaft portion 73b having a smaller diameter than the first shaft portion. The fourth slide shaft 75 includes a head portion 75d, a first shaft portion 75a, a second shaft portion 75b having a smaller diameter than the first shaft portion 75a, and a third shaft portion 75c having a smaller diameter than the second shaft portion 75b.

  In the first slide shaft 53, the first shaft portion 53 a is inserted through the first long hole 54 a of the synchronization plate 54, the first hole portion of the shaft body mounting portion 50 b, and the first cam surface 51 of the cam plate 52. The end portion of the second shaft portion 53b is caulked with the second shaft portion 53b inserted into the stepped hole portion 58a of the connecting plate member 58. By doing so, the contact plate member 58 is configured not to come out from the first slide shaft 53. The second slide shaft 55 has a first shaft portion in the second hole portion 50e of the shaft body mounting portion 50b, the first cam surface 51 of the cam plate 52, and the hole portion 58b of the one connecting plate member 58. The portion is inserted through the first hole 60 a of one second link member 60, and the third shaft portion is inserted through the washer 62. By caulking the end portion of the third shaft portion inserted into the washer 62, the second link member 60, the washer 62, and the like are not pulled out from the second slide shaft 55.

  In the third slide shaft 73, the first shaft portion 73a is inserted through the second long hole 54b of the synchronization plate 54, the first hole portion 70d of the shaft body mounting portion 70b, and the second cam surface 71 of the cam plate 52, and the other The end portion of the second shaft portion 73b is caulked with the second shaft portion 73b inserted into the stepped hole portion 78a of the connecting plate member 78. By doing so, the other connecting plate member 78 and the like are configured not to come out of the third slide shaft 73. In the fourth slide shaft 75, the first shaft portion 75a is connected to the second hole portion 70e of the shaft body mounting portion 50b, the second cam surface 71 of the cam plate 52, and the hole portion 78b of the other connecting plate member 78. The shaft portion 75 b is inserted through the first hole 80 a of the other second link member 80, and the third shaft portion 75 c is inserted through the washer 62. By caulking the end portion of the third shaft portion 75 c inserted into the washer 62, the other second link member 80, the washer 62, and the like are not pulled out from the fourth slide shaft 75.

  One connecting shaft 61a is inserted into one hole 59b of the first link member 59 and the second hole 60b of one second link member 60, and the one connecting shaft 61a is an end of the shaft. By caulking, one connecting shaft 61a, the first link member 59, and the one second link member 60 are configured to be integrated. The other connecting shaft 61b is inserted into the other hole 59b of the first link member 59 and the second hole 80b of the other second link member 80, and the end of the shaft portion of the other connecting shaft 61b. By caulking, the other connecting shaft 61b, the first link member 59, and the second link member 80 are configured to be integrated.

  The cam member 63 includes four mounting leg portions 63b, a flat surface portion 63d, a first sloping surface portion 63e formed between the mounting leg portion 63b and the flat surface portion 63d, and a second sloping surface portion 63f. The lower surface 63c of the first slope portion 63e is in contact with the shoulder portions (first contact surface portions) 60c, 60c of one second link member 60. The lower surface 63c of the second slope portion 63f is in contact with the shoulder portions 80c and 80c of the other second link member 80. On the side of the second shaft portion 57b having a smaller diameter than the third shaft portion 57c of the four support shafts 57, spring members 64, which are interlocking mechanism load applying members, are provided between the mounting leg portions 63b and the fixing plate 65, respectively. Is provided. An engaging portion 64 a is formed at one end of the spring member 64. The engaging part 64a engages with an engaged part formed on the mounting leg part 63b and restricts the spring member 64 from rotating. The spring member 64 constantly biases the cam member 63 to the other side (cam plate side). For example, when one of the second link members 60 swings around the second slide shaft 55 and the shoulder portion 60c swings in the direction of arrow D, the cam member 63 is pressed against the first inclined surface portion 63e and the spring member 64. It moves in the direction of arrow Z against the urging force (see FIG. 7). In other words, the cam member 63 always presses at least one of the shoulder portion 60c of the second link member 60 and the shoulder portion 80c of the second link member 80.

[Operation of Hinge Mechanism of Electronic Device of Second Embodiment]
The operation procedure and operation of the hinge mechanism 5 will be described with reference to FIGS.
Either or both of the first casing 101 on the first mounting member 50 side and the second casing 102 on the second mounting member 70 side may be opened or closed. An example of a procedure for opening the second casing 102 (second mounting member 70) with respect to one casing 101 (first mounting member 50) will be described below. When the first mounting member 50 and the second mounting member 70 are closed (when the second mounting member 70 is opened from the closed state (the state shown in FIGS. 3A and 6A)), the third slide shaft 73 is guided by the third cam groove 71a and the fourth slide shaft 75 is guided by the fourth cam groove 71b, and the second mounting member 70 is in the θ1 direction (clockwise direction in FIG. 3) as shown in FIG. And move linearly in the direction away from the first mounting member 50 (the + X direction in FIG. 3). The third slide shaft 73 and the fourth slide shaft 75 move while maintaining the relative positional relationship by the shaft body attaching portion 70b and the other connecting plate member 78.

  The fourth slide shaft 75 is guided by the fourth cam groove 71b and linearly moves in the + X direction, and the third slide shaft 73 follows the arc shape of the third cam groove 71a from the lower part of the arc shape in FIG. Swing motion to the part. As a result, the other connecting plate member 78 and the other second link member 80 swing. The swing of the other second link member 80 is transmitted to the first link member 59 via the other connecting member 61b, and the first link member 59 swings about the central shaft 56 as a fulcrum. The swing of the first link member 59 is transmitted to one second link member 60 through one connection shaft 61a. The swing of one second link member 60 is transmitted to the first slide shaft 53 and the second slide shaft 55 side through the one connecting plate member 58, and the first mounting member 50 also moves in the θ2 direction (the opposite direction in FIG. 3). Oscillates clockwise. At this time, the first slide shaft 53 and the second slide shaft 55 are moved while maintaining the relative positional relationship by the shaft body mounting portion 50b and the one connecting plate member 58. In other words, the first casing 101 swings in the θ2 direction and the second casing 102 swings in the θ1 direction, and the first casing 101 and the second casing 102 linearly move in directions away from each other. Further, in the synchronization plate 54, the movement of the third slide shaft 73 and the first slide shaft 53 in the X direction is absorbed by the second long hole 54b and the first long hole 54a. It is guided by the two-surface width portion 56c and moves linearly only in the Y direction. Accordingly, the synchronization plate 54 is moved from the position in the closed state (the state in FIG. 6A) where the first housing 101 and the second housing 102 are closed to the position in the intermediate angle state (the state in FIG. 6B). The first housing 101 and the second housing 102 are synchronized. The first housing 101, the second housing 102, the synchronization plate 54, and the like are in the state shown in FIGS. 3B and 6B.

  With respect to the first mounting member 50, the intermediate angle state (the state shown in FIGS. 3B and 6B) is changed to the open state (the state shown in FIGS. 3C and 6C). 2 When the operation of opening the attachment member 70 is performed, the third slide shaft 73 is guided to the third cam groove 71a, and the fourth slide shaft 75 is guided to the fourth cam groove. That is, the second mounting member 70 swings in the θ1 direction and linearly moves in a direction approaching the first mounting member 50 (−X direction). The third slide shaft 73 and the fourth slide shaft 75 move while maintaining the relative positional relationship by the shaft body attaching portion 70b and the other connecting plate member 78.

  At this time, the fourth slide shaft 75 is guided by the fourth cam groove 71b and linearly moves in the −X direction, and the third slide shaft 73 has an arc shape in FIG. 3 along the arc shape of the third cam groove 71a. Swing from the center to the top. As a result, the other connecting plate member 78 and the other second link member 80 swing. The swing of the other second link member 80 is transmitted to the first link member 59 via the other connecting member 61b, and the first link member 59 swings about the central shaft 56 as a fulcrum. The swing of the first link member 59 is transmitted to one second link member 60 through one connection shaft 61a. The swing of the one second link member 60 is transmitted to the first slide shaft 53 and the second slide shaft 55 via the one connecting plate member 58, and the first mounting member 50 also swings in the θ2 direction. At this time, the first slide shaft 53 and the second slide shaft 55 are moved while maintaining the relative positional relationship by the shaft body mounting portion 50b and the one connecting plate member 58.

  In other words, the first casing 101 swings in the θ2 direction, the second casing 102 swings in the θ1 direction, and the first casing 101 and the second casing 102 linearly move in directions approaching each other. By this swinging operation, there is no gap between the first housing 101 and the second housing 102. That is, the display unit 103 of the first housing 101 and the display unit 104 of the second housing 102 can be brought as close as possible. At this time, the synchronization plate 54 absorbs the movement of the third slide shaft 73 and the first slide shaft 53 in the X direction by the second elongated hole 54b and the first elongated hole 54a. It is guided by the two-surface width portion 56c and moves linearly only in the Y direction. Therefore, the synchronization plate 54 is in the open state (the state shown in FIG. 6C) in which the first housing 101 and the second housing 102 are opened approximately 180 degrees from the intermediate angle state (the state shown in FIG. 6B). ) And the first casing 101 and the second casing 102 are synchronized. The first housing 101, the second housing 102, the synchronization plate 54, and the like are in the state shown in FIGS. 3 (c) and 6 (c). Thus, the first mounting member 50 and the second mounting member 70 operate in conjunction with each other while maintaining a synchronous relationship. For this reason, the first housing 101 and the first mounting member 50 are also opened in synchronization with the operation of the second housing 102 and the second mounting member 70.

  Further, the first inclined surface portion 63e and the second inclined surface portion 63f of the cam member 63 have at least one of the shoulder portion 60c of one second link member 60 and the shoulder portion 80c of the other second link member 80 as a spring. The structure is such that it is always pressed by the biasing force of the member 64. For example, when one second link member 60 swings and the shoulder portion 60c presses the lower surface 63c of the first inclined surface portion 63e of the cam member, the cam member 63 is moved against the urging force of the spring member 64 ( (See FIG. 7). Although not shown, when the other second link member 80 swings and the shoulder 80c presses the lower surface 63c of the second inclined surface 63f of the cam member 63, the cam member 63 is attached to the spring member 64. Move against the power. Thus, since the cam member 63 is configured to constantly press the one second link member 60 and / or the other second link member 80, the first casing 101, the second casing, and the like. Occurrence of opening and closing when the body 102 is opened and closed can be suppressed or prevented. The touch when the user opens / closes the first housing 101 and the second housing 102 of the electronic device can be improved, and the opening / closing operation can be performed smoothly.

  The first housing 101 and the second housing 102 are moved from the open state (the state shown in FIGS. 3C and 6C) to the closed state (the state shown in FIGS. 3A and 6A). In the case of closing, only the operation procedure and operation opposite to the operation procedure and operation described above are performed, and the description is omitted.

  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, 5 ... Hinge mechanism
DESCRIPTION OF SYMBOLS 10, 50 ... 1st attachment member 12, 52 ... Cam plate 11, 51 ... 1st cam surface 11a, 51a ... 1st cam groove 11b, 51b ... 2nd cam groove 13, 53 ... 1st slide shaft 14, 55 ... Second slide shaft 15, 35 ... Connecting member 18 ... Synchronizing plate 19 ... Synchronizing plate guide 20 ... Leaf spring member 21, 65 ... Fixed plate 30, 70 ... Second mounting member 31, 71 ... Second cam surface 31a, 71a ... 3rd cam groove 31b, 71b ... 4th cam groove 33, 73 ... 3rd slide shaft 34, 75 ... 4th slide shaft 58, 78 ... Connecting plate member 59 ... 1st link member 60, 80 ... 2nd link member 63 ... Cam member 64 ... Spring member 101 ... First housing
102 ... 2nd housing | casing 103 ... 1st display part
104 ... 2nd display part 105 ... Cable

Claims (8)

A first housing containing electronic components;
In an electronic device comprising a second casing that can be folded within a relative angle of approximately 180 degrees around the folding center line, together with the swing of the first casing, by means of a hinge mechanism, and that has a second casing with a built-in electronic component ,
The hinge mechanism is
A first slide shaft (13, 53) disposed on both side surfaces of the first housing and moving along the first cam surface;
The first cam is disposed on both side surfaces of the first housing at a position farther from the first slide shaft with respect to the folding center line, and so that the first slide shaft and the center line are parallel to each other. A second slide axis (14, 55) moving along the plane;
A third slide shaft (33, 73) disposed on both side surfaces of the second housing and moving along the second cam surface;
The second cam is disposed on both side surfaces of the second casing at a position farther from the third slide shaft with respect to the folding center line, and so that the third slide shaft and the center line are parallel to each other. A fourth slide axis (34, 75) moving along the plane;
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 ( 12, 52),
A fixed plate (21, 65) fixed to the cam plate integrally with a predetermined interval;
A folding operation interlocking mechanism that is provided between the cam plate and the fixed plate, and that interlocks the swinging motion of the first housing and the swinging motion of the second housing;
An interlocking mechanism load applying member (20, 64) provided between the folding operation interlocking mechanism and the fixed plate, and for always applying a load to the folding operation interlocking mechanism in a predetermined direction. An electronic device characterized by that. The electronic device according to claim 1,
The folding operation interlocking mechanism is movably provided between the cam plate and the fixed plate, extends in the longitudinal direction of the cam plate, and passes through the first slide shaft; A synchronization plate (18) extending in the longitudinal direction and formed with a second elongated hole through which the third slide shaft is inserted, and provided between the cam plate and the fixed plate, the synchronization plate, A synchronization plate guide for guiding the cam plate so as to be movable in a direction perpendicular to the longitudinal direction of the cam plate;
The swinging motion of the first slide shaft or the third slide shaft is converted into the linear motion of the synchronizing plate, and the linear motion of the synchronizing plate is converted to the swinging motion of the third slide shaft or the first slide shaft. An electronic device characterized by being converted into an interlocking device. The electronic device according to claim 2,
The interlock mechanism load applying member is an urging member that is provided integrally with the synchronizing plate between the fixing plate and the synchronizing plate and applies a predetermined load to the fixing plate. Features electronic equipment. The electronic device according to claim 1,
The folding operation interlocking mechanism is supported by a central portion of the cam plate and has a central axis (56) having a guide surface (56c) formed in a direction orthogonal to the longitudinal direction of the cam plate, and one end portion. One second link member (60) to which the second slide shaft is swingably connected to the side, and the other second link to which the fourth slide shaft is swingably connected to one end side The member (80) swings around the central axis, the other end side of the one second link member (60), and the other end side of the other second link member (80) A first link member (59) that is swingably connected to the first elongated hole, a first elongated hole that extends in the longitudinal direction and through which the first slide shaft is inserted, and a third slide shaft that extends in the longitudinal direction. And a guide groove guided by the guide surface are formed. Of the Sync plate (54) and provided with,
The swinging motion of the first slide shaft or the third slide shaft is converted into the linear motion of the synchronizing plate, and the linear motion of the synchronizing plate is converted to the swinging motion of the third slide shaft or the first slide shaft. An electronic device characterized by being converted into an interlock. The electronic device according to claim 4,
The interlocking mechanism load applying member is provided between the folding motion interlocking mechanism and the fixed plate, and is in contact with a first contact surface portion formed on one side of the one second link member. A cam member (63) having a first inclined surface and a second inclined surface portion for contacting a second contact surface portion formed on one side of the other second link member; and the central axis The biasing member (64) that constantly biases the cam member toward the cam plate is provided in the axial direction of the first link member (60) and the second link member (80). On the other hand, an electronic device is characterized in that a load is applied in a predetermined rotational direction. In the electronic device according to any one of claims 1 to 5,
The third slide shaft is arranged at a symmetrical position with respect to the first slide shaft, with the folding center line as a center.
The fourth slide shaft is disposed at a symmetrical position with respect to the second slide shaft, with the folding center line as a center.
The electronic device, wherein the cam plate is formed such that the first cam surface and the second cam surface are symmetric with respect to the folding center line. The electronic device according to any one of claims 1 to 6,
The cam grooves of the first cam surface and the second cam surface are
When the second slide shaft and the fourth slide shaft swing at the farthest distance from the folding center line at the intermediate angular position of the swing of the first housing and the second housing, An electronic device, wherein corners of the first housing and the second housing are shaped so as not to overlap the folding center line at a swing center point on the folding center line. The electronic apparatus according to any one of claims 1 to 7,
The first cam surface has a first cam groove (11a, 51a) for guiding the first slide shaft, and a second cam groove (11b, 51b) for guiding the second slide shaft,
The second cam surface has a third cam groove (31a, 71a) for guiding the third slide shaft and a fourth cam groove (31b, 71b) for guiding the fourth slide shaft. Features electronic equipment.

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