JP4553811B2 - Folding electronics - Google Patents

Description

  The present invention relates to a foldable electronic device, and more particularly to a connection wiring that connects a pair of device cases such as a mobile phone, a notebook personal computer, and an electronic dictionary.

  In recent years, electronic information devices such as mobile phones, notebook personal computers, electronic dictionaries, etc. have become widespread, and these electronic information devices have been developed and equipped with various software, and have improved functionality. Are small, lightweight and designed, and among them, mobile phones are most advanced in terms of hardware size, weight and design, and various types have been proposed (for example, the following) Patent Document 1).

  FIG. 14 shows a foldable mobile phone described in the following Patent Document 1, FIG. 14 (a) is a perspective view, and FIG. 14 (b) is a partially broken enlarged front view of the hinge mechanism.

  The foldable mobile phone 80 includes a cover case 82 having a display unit 81, a speaker, and the like, a main body case 84 having a wireless transmission / reception circuit and various operation keys 83, a microphone, and the like, and hinge mechanisms 85, 85 ′. The lid case 82 and the main body case 84 are connected to each other by hinge mechanisms 85 and 85 ′ so as to be foldable.

  The hinge mechanisms 85 and 85 'are composed of a right hinge mechanism 85 and a left hinge mechanism 85' in FIG. Among these hinge mechanisms, the right hinge mechanism 85 has a first piece part 84a protruding from the main body case 84 and a first piece part 82a protruding from the lid case 82, which are arranged coaxially. A hinge assembly 86 is fitted in the central hole of the piece portions 84a and 82a, and the left hinge mechanism 85 ′ is provided so as to protrude from the second piece portion 84b protruding from the main body case 84 and the lid case 82. The second piece 82b is coaxially arranged, and a hinge shaft 87 is fitted in the central hole of these pieces 84b and 82b. As shown in FIG. 14B, the hinge assembly 86 inserted into the central holes of the first piece parts 84a and 82a is connected to the end of the main body case 84 and rotates integrally with the main body case. 88, a lid driving unit 89 that is coupled to the end of the lid case 82 and rotates integrally with the lid case, and is interposed between the main body driving unit 88 and the lid driving unit 89, and the lid case 82 A driving mechanism (not shown) that exerts a force to rotate the lid drive unit 89 in the opening direction of the lid, and a holding mechanism for holding the lid case 82 in the closed position with the lid case 82 closed. It consists of

By providing such a hinge mechanism, the foldable mobile phone disclosed in Patent Document 1 described below allows the lid case 82 to be smoothly folded and opened with respect to the main body case 84.
JP 2001-251396 A (FIG. 2, FIG. 5, paragraphs [0016] to [0021])

  In the folding cellular phone described in Patent Document 1, a flexible print is provided between the main body case and the lid case in order to electrically connect the control circuit boards in both cases to transmit various signals. A connecting wiring such as a wiring board (FPC: Flexible Printed Circuit; hereinafter simply referred to as FPC) is connected.

  However, since the folding mobile phone disclosed in Patent Document 1 has hinge mechanisms 85 and 85 ′ provided on the left and right sides on the same axis, both FPCs are wired in such a hinge mechanism. Since the FPC is bent or pulled when the case is opened and closed, the FPC may be twisted or may be damaged due to a relatively large tensile force. In particular, such a load is concentrated on a portion of the FPC located particularly on the hinge mechanism.

  In view of the above problems, the present inventors have found that the above problems can be solved by dispersing the stress generated at the position where the hinge mechanism of the connection wiring is provided. Specifically, it has been found that the rotation angle of each rotation axis can be halved by providing two rotation axes of the hinge mechanism for connecting the two device cases as compared with the case of one rotation axis. Is.

  That is, an object of the present invention is to provide a foldable electronic device in which stress generated in a connection wiring that electrically connects both device cases is dispersed and is not easily damaged.

In order to achieve the above object, the invention of the foldable electronic device according to claim 1 of the present application includes a pair of device cases each including at least a control circuit board, and one side end portions of the pair of device cases. In a foldable electronic device comprising a hinge mechanism that is rotatably connected and a connection wiring that electrically connects the pair of device cases to transmit various control signals and the like, each of the pair of device cases , the one end of the hinge mechanism is connected, the two arm pieces that protrude a predetermined length in the direction in which both corners is orthogonal to the one side end portion is formed, and the projection of said pair of device cases the hinge mechanism to the arm pieces are attached, wherein the hinge mechanism is provided with a first rotary shaft provided between the two arm pieces of one of the device case, between the two arm pieces of the other device case Is And a second rotary shaft, wherein the connecting line includes a one corner portion of the pair of device cases along said hinge mechanism is being bent wire, the connecting wire first to fourth bent portion From one device case through one corner of the device case, led out to the hinge mechanism side along the first rotation axis through the first bent portion, and through the second bent portion. Extending from the first rotating shaft to the second rotating shaft side, led out of the hinge mechanism along the second rotating shaft via the third bent portion, and via the fourth bent portion wherein the wiring to the other device case, wherein the first bent portion between the second bend one arm piece of the one of the device case is interposed, the said fourth bent portion and the third bent portion One arm piece of the other device case is interposed between them.

  Moreover, in the foldable electronic device according to claim 1, the invention according to claim 2 is the foldable electronic device according to claim 1, wherein the connection wiring passes through one of the adjacent corner portions of the pair of device cases. It is characterized by being wired like this.

  According to a third aspect of the present invention, in the foldable electronic device according to the first aspect, the connection wiring is a flexible printed wiring board.

  According to a fourth aspect of the present invention, in the foldable electronic device according to the third aspect, the flexible printed wiring board has terminal pieces connected to connection portions provided on the control circuit board at both ends. It consists of the formed elongate film-like body, The longitudinal direction intermediate part is bent in the substantially U shape.

  According to a fifth aspect of the present invention, in the foldable electronic device according to the fourth aspect, two sides extending in a direction orthogonal to the longitudinal direction of the flexible printed wiring board are the first and second sides of the hinge mechanism. It is wired along the rotation axis.

  The invention according to claim 6 is the folding electronic device according to claim 4, wherein each side extending in a direction parallel to the longitudinal direction of the flexible printed wiring board is bent in the U-shape. It is wound around the first and second rotating shafts at a predetermined angle at a position close to the portion.

  The invention according to claim 7 is the foldable electronic device according to claim 4, wherein each of the bent portions bent in the U-shape is bent in an arc shape.

  The invention according to claim 8 is the foldable electronic device according to claim 3, wherein a plurality of the flexible printed wiring boards are stacked and wired.

  The invention according to claim 9 is the foldable electronic device according to claim 1, wherein the connection wiring is a coaxial cable having a predetermined diameter.

  According to a tenth aspect of the present invention, in the foldable electronic device according to the ninth aspect, the coaxial cable has terminal pieces connected to connection portions provided on the control circuit board at both ends. It is characterized by being made of a cable-like body having flexibility and wired so as to pass through the communication hole formed along the axis of the first and second rotating shafts.

  By providing the above configuration, the present invention has the following excellent effects. That is, according to the first aspect of the present invention, a biaxial type hinge mechanism is used, and the connecting case is connected by wiring the connecting case along the hinge mechanism. Since stress generated in the connection wiring by the operation is distributed to each axis so that the stress is not concentrated on a part of the connection wiring, it is possible to prevent the connection wiring from being damaged by being bent or pulled. Specifically, since stress does not concentrate on each part of the connection wiring, and there are two rotation axes, there is a lot of space for allowing bending or the like that occurs when opening and closing around these two axes. Even if this occurs, it is difficult for stress to be applied to the connecting wiring due to this bending, and thus damage is less likely to occur. In addition, since the first to fourth bent portions are provided in the connection wiring, the stress caused by the opening / closing operation of the device case can be distributed to the four bent portions, so that damage to the connection wiring can be further prevented. It becomes like this. Furthermore, the narrow space of the hinge portion can be effectively used.

  According to the invention of claim 2, since the connecting wiring is wired so as to communicate the corners of both device cases adjacent to each other, the connecting wiring can be made relatively short.

  Further, according to the third and fourth aspects of the invention, even when an FPC made of a film is used as the connection wiring, breakage can be satisfactorily prevented even when the device case is opened and closed several times.

  According to the fifth aspect of the present invention, the two sides perpendicular to the longitudinal direction of the FPC are wired along the rotation axis, so that no stress is generated during the rotation of these two sides.

  According to the invention of claim 6, when the opening / closing operation is performed by rotating each bent portion by a predetermined angle (for example, 180 °) about the rotation axis, the diameter of the rotating portion is enlarged or reduced. Thus, the FPC is not directly stressed.

  According to the seventh aspect of the present invention, since the arc portion is not provided at the bent portion, the stress does not concentrate on the corner portion, so that the breakage hardly occurs.

  Further, according to the invention of claim 8, as shown in the effect of the invention of claim 1, since there are two rotating shafts, a large FPC wiring space can be obtained. When it is desired to connect the control boards of the case using many wires, even if the FPCs are overlapped and wired, the FPC is not stressed easily, so the number of FPCs can be easily changed according to the number of wires. it can.

  According to the ninth aspect of the present invention, even if a coaxial cable is used instead of the FPC for the connection wiring, the control boards of both device cases can be connected without causing damage.

  According to the invention described in claim 10, the coaxial cable is formed of a flexible cable, and the two control boards can be connected by bending and communicating along two rotation axes. . In this case, since the coaxial cable is wired along the two rotation axes, as shown in the effect of the invention described in claim 1 above, the stress generated for each bent portion is dispersed, so that the breakage and the like are improved. Can be prevented.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies a foldable electronic device for embodying the technical idea of the present invention, and is not intended to specify the present invention as this foldable electronic device. Other embodiments within the scope of the claims are equally applicable. In the following embodiment, an example in which the present invention is applied to a foldable mobile phone as a foldable electronic device will be described. However, the present invention is not limited to such a mobile phone, and a folding mechanism such as a notebook PC and an electronic dictionary is provided. It can be applied to various devices.

  FIG. 1 is a perspective view showing a foldable mobile phone to which a hinge mechanism according to an embodiment of the present invention is applied. FIG. 2 is a state in which a housing and a case are removed from the mobile phone of FIG. 3 is a perspective view seen from the back of FIG. 2, FIG. 5 is an exploded perspective view showing the hinge mechanism in an exploded manner, and FIG. 6 is an exploded perspective view seen from a different direction.

  As shown in FIGS. 1 to 3, the foldable mobile phone 1 includes a transmission case 2 in which a wireless transmission / reception circuit, various operation keys, a microphone, and the like are accommodated, and a reception case 10 in which a display unit, a receiver, and the like are accommodated. And a hinge mechanism 20 that rotatably connects these transmission / reception cases 2 and 10. In FIG. 1, the hinge mechanism 20 is covered with a hinge cover C including a pair of cover members 7 and 8.

  The transmission case 2 accommodates components such as the control circuit board 3 inside, an elongated box-like rear housing 2a having a speaker opening and a battery mounting portion formed at the bottom, and the rear housing 2a. A control circuit board 3 including a microphone, a speaker, and the like, various operation keys 5a to 5c, and a front surface housing 2b that has a plurality of holes that expose the various operation keys 5a to 5c and covers the opening of the back housing 2a. In addition, components such as the control circuit board 3 and various operation key switch boards are accommodated in the rear housing 2a, and the opening is covered with the front housing 2b.

  The control circuit board 3 is equipped with a call control circuit for controlling a call function, a network control circuit for controlling network connection and the like, and a control circuit for controlling other functions, and these control circuits are controlled by a built-in CPU. It has become so. In addition, since these control circuits use a well-known thing, detailed description is abbreviate | omitted. The switch board, the operation sheet member, the control circuit board, and the like are fixed to the support frame 4, and one end of the support frame 4 is fixed to the second frame 41 of the hinge mechanism 20. The switch board 5 includes a plurality of operation keys 5a to 5c.

  The receiving case 10 has an opening 10b ′ on the front surface, and includes a rear housing 10a, a display panel 11 made of a liquid crystal display device and the like, components such as a receiver 12, and a display window that exposes the display surface of the display panel 11. And a front housing 10b that covers the opening of the rear housing 10a. The rear housing 10a accommodates components such as a panel control board 14 and a receiver 12 for controlling an image to be displayed on the display panel 11. Components such as the display panel 11 and the panel control board 14 are fixed to a support frame 13 as shown in FIG. 2, and one end of the support frame 13 is fixed to a first frame 21 of the hinge mechanism 20. .

  In this embodiment, the control circuit boards 3 and 14 accommodated in the transmitting case 2 and the receiving case 10 are connected by flexible lead wires, that is, FPCs 6 as shown in FIGS. Has been. The FPC 6 is formed of a strip-like body having a narrow width and a predetermined length in which an ultrafine wire is wired inside an insulating film, and a central portion thereof is bent in a substantially U-shape. This FPC 6 is hinged by disposing a portion bent in a substantially U-shape from the control circuit board 3 through one corner 15b to which the hinge mechanism 20 of the transmission case 2 is connected. The mechanism 20 is connected to the control circuit board 14 via one corner 16 b of the receiving case 10.

  4A and 4B show an FPC, FIG. 4A is a plan view, and FIG. 4B is a perspective view showing the FPC in a state of being attached to a mobile phone.

  As shown in FIG. 4 (a), the FPC 6 includes relatively long terminal pieces 6a and 6b each having a terminal portion connected to each control circuit board 3 and 14 at the tip portion, and these terminal pieces 6a, 6b and a connecting piece 6c which is bent in a substantially U shape and is assembled to the hinge mechanism 20. Each terminal piece 6a, 6b is formed to be slightly wider than the connecting piece 6c and serves as a terminal portion connected to a contact terminal (not shown) of each control circuit board 3, 14.

The connecting piece 6c includes first annular portions 6 ₁ , 6 ₁ bent substantially at right angles to the longitudinal direction provided at positions extending a predetermined length from the other ends of the terminal pieces 6a, 6b, 1 annular parts 6 _1, first connection piece 6 which extends a predetermined length from 6 ₁ perpendicularly _2, 6 _2, provided at the end of the first connection piece 6 _2, 6 _2, first connection piece 6 _2, a 6 second annular parts 6 _{3 2} ends are substantially right angle bend so as to be connected, 6 _3, second connection that connects the second annular parts 6 _3, 6 ₃ together It has a strip 6 _4. The first annular parts 6 ₁ , 6 ₁ and the second annular parts 6 ₃ , 6 ₃ are as shown in the figure. The bending direction is set so as to be symmetric with respect to the central portion in the longitudinal direction. Further, the connecting piece 6 c wired along the hinge mechanism 20 is covered with a hinge cover C.

As shown in FIG. 2 and FIG. 4B, the wiring inside the mobile phone 1 of the FPC 6 is connected to the first annular portions 6 ₁ , 6 ₁ of the connecting piece 6 c by the second arm of the first frame 21 of the hinge mechanism 20. piece 24, and the corner portion 15b, a first annular parts 6 at 16b ₁ corners 15b, of the one as well as disposed within 16b one of which flank the fourth arm piece 44 of the second frame 41, 6 ₁ is rotated by a predetermined angle, for example, 180 ° about two rotation axes of the hinge mechanism 20, and a part of the first connection pieces 6 ₂ , 6 ₂ is part of the arm portions of the second arm piece 24 and the fourth arm piece 44. Are inserted into the U-shaped grooves 25c and 45c. Further, the second annular portions 6 ₃ , 6 ₃ are disposed in the vicinity of the middle portion in the longitudinal direction of the first and second frames 21, 41, and further, for example, 180 ° about the two rotating shafts of the hinge mechanism 20. rotate wherein securing the second connection piece 6 ₄ on the joining piece 31 of the connecting member 30 of the hinge mechanism 20.

This FPC 6 has first annular portions 6 ₁ , 6 ₁ , first connecting pieces 6 ₂ , 6 _2, and second annular portions 6 ₃ , 6 _{3 on} a connecting piece 6c, and a second annular ring. parts by 6 _3, 6 ₃ are connected by the second connection piece 6 _4, the cellular phone 1 is opened and closed a twisted FPC6 even that might have partially disappears. More specifically, since one corner 15b to which the FPC 6 of the transmission case 2 is wired and one corner 16b to which the FPC 6 of the reception case 10 are wired are adjacent to each other in a straight line, the twist is not caused. It can be prevented from occurring. Further, since the mobile phone 1 has two rotation axes of the hinge mechanism 20, the FPC 6 wired along the rotation axis has a rotation axis of 1 when the open state is, for example, 160 °. In the case of a shaft, stress is applied to the FPC wired to the hinge mechanism part by a rotation of 160 °. However, if the rotation shaft is two, the rotation angle generated on one rotation shaft is the same as that in the case of one shaft. Since it is half of 80 ° and the rotation angle generated on one rotating shaft is reduced and the stress applied to the FPC 6 is also distributed to the two shaft portions, the durable life of the FPC 6 can be dramatically increased. In addition, since the two annular portions 6 ₁ , 6 ₁ , 6 ₃ , and 6 ₃ are provided on each of the two rotation shafts, the stress generated on the rotation shaft can be further dispersed. .

  Further, since the hinge mechanism is constituted by two rotating shafts, a space is generated in the hinge mechanism 20 as compared with the single-shaft hinge mechanism, and the flexure of the FPC 6 generated when the mobile phone is opened and closed. Therefore, the stress applied to the FPC 6 can be further reduced.

Therefore, it is to join an excessive stress to the FPC 6, can avoid accidents such as cutting of wire by twisting, double-sided adhesive tape or other binding piece 31 of the connecting member 30 of the second connecting portion 6 ₄ of the hinge mechanism 20 be fixed to the fixing means, the second connecting portion 6 ₄ is moved, also eliminates damaging caught on obstructions.

  In the above embodiment, the control boards of the transmission case 2 and the reception case 10 are connected by the FPC 6, but the present invention is not limited to this, and for example, a coaxial cable or the like may be used. In this case, if the coaxial cable is arranged in a crank shape so that the axial center portion of the rotation shaft of the link mechanism is inserted, the stress applied to the coaxial cable can be reduced as in the case where the FPC 6 is used.

Further, in this embodiment, when the FPC 6 is disposed along each rotational axis, the first annular portions 6 ₁ and 6 ₁ and the second annular portions 6 ₃ and 6 ₃ are rotated by a predetermined angle along the rotational axis. However, the crank-shaped FPC 6 may be provided without rotating in this manner, and in this case as well, since a relatively wide space exists in the hinge mechanism 20, the deflection and the twist of the FPC 6 are suppressed satisfactorily. be able to.

  As shown in FIGS. 5 and 6, the hinge mechanism 20 includes a pair of first and second frames 21 and 41 attached to the support frames 4 and 13 housed in the transmission / reception cases 2 and 10, and these The connecting member 30 as a third frame for connecting the first and second frames 21 and 41 and the first and second frames 21 and 41 connected by the connecting member 30 are respectively rotated from the folding position to a predetermined angle. The first and second drive mechanisms 50 and 50 for regulating and holding the drive, the link mechanism 60 for linking the first and second frames 21 and 41, and the drive of both frames, and the transmission case 2 And stopper mechanisms 70 and 70 that maintain the open and closed states when the receiving case 10 is opened and closed.

  The components constituting the first and second frames 21 and 41, the connecting member 30, the first and second drive mechanisms 50 and 50, the link mechanism 60, and the stopper mechanisms 70 and 70 are mostly made of metal rigid bodies. Is formed by stamping and bending a metal plate. As the metal material, a stainless steel spring material (for example, SUS304CSP-1 / 2H) having high strength, high rigidity, and high toughness is preferable. The plate thickness of the first and second frames 21 and 41 is, for example, 1.5 mm, and the plate thickness of the connecting member 30 is, for example, 1.2 mm. By forming each component with a metal material in this way, the mechanical strength of the hinge mechanism can be increased as compared with a conventional resin material, so that the component can be made smaller. Moreover, since the support frames 4 and 13 are electrically connected by forming the hinge mechanism 20 as a whole by a metal rigid body, the reception area of the antenna provided in either of the support frames 4 and 13 can be increased, and the antenna Performance can be improved.

  In addition, the first and second frames 21 and 41 are incorporated without providing any protrusions in the respective concave portions formed at the connecting portions of the transmission / reception cases 2 and 10 that are folded in two.

  As shown in FIGS. 5 and 6, the first frame 21 has a predetermined length of the coupling piece 26 and a pair of first and second predetermined lengths bent substantially at right angles from both ends of the coupling piece 26 in the same direction. It consists of 2nd arm pieces 22 and 24, is attached to the support frame 13 of the receiving case 10, and the whole is U-shaped when it sees from a plane.

  The length of the coupling piece 26 is shorter than the width of the receiving case 10, and the first and second arm pieces 22, 24 have coupling portions 22 a, 24 a formed at their respective distal ends, U-shaped grooves 23c and 25c for inserting FPCs or lead wires are formed in the arm portions of the arm pieces 22 and 24, respectively.

  The coupling portion 22a of the first arm piece 22 is a ring-shaped attachment ring having an opening 22b of a size that allows the cylindrical cap 51 to be inserted. In addition, a groove 22c into which the flange 53 formed on the flange 52 of the cylindrical cap 51 is inserted is formed on the outer periphery of the coupling portion 22a.

  Further, the coupling portion 24a of the second arm piece 24 is made of a plate-like body having a predetermined size, and a non-circular attachment hole 24b for attaching the first attachment shaft 72 of the stopper member 71 to the plate-like body, A pair of protrusions 25a and 25b for positioning and fixing the stopper member 71 are formed on one surface of the plate-like body (the surface facing the first arm piece 22).

  The height of these protrusions 25a and 25b (height from the surface of the plate-like body) is shorter than the wall thickness of the stopper member 71, that is, is shorter than the thickness of the stopper member 71, and has a predetermined fan shape around the mounting hole 24b. It is on the imaginary line opened at an angle and is provided on the outer peripheral edge of the second arm piece 24. These protrusions 25 a and 25 b are formed by punching from the other surface of the second arm piece 24.

  The coupling piece 26 has a band shape, and attachment holes 26a and 26b to be attached to the support frame 13 are formed in the vicinity of both ends.

  The second frame 41 has substantially the same shape as the first frame 21, and has a predetermined length of a coupling piece 46 and a pair of first lengths of a predetermined length that are bent substantially at right angles from both ends of the coupling piece 46 in the same direction. 3 and the fourth arm pieces 42 and 44, which are attached to the support frame 4 of the transmission case 2.

  The length of the coupling piece 46 is shorter than the width of the transmission case 2, and the third and fourth arm pieces 42 and 44 are formed with coupling portions 42a and 44a at the respective leading ends, respectively. U-shaped grooves 43c and 45c for inserting FPCs or lead wires are formed in the arm portions of the arm pieces 42 and 44, respectively.

  The coupling portion 42a of the third arm piece 42 is a ring-shaped attachment ring having an opening 42b large enough to allow the cylindrical cap 51 to be inserted. In addition, a groove 42c into which the flange 53 formed on the flange 52 of the cylindrical cap 51 is inserted is formed on the outer periphery of the coupling portion 42a.

  Further, the coupling portion 44a of the fourth arm piece 44 is formed of a plate-like body having a predetermined size, a non-circular mounting hole 44b for attaching the stopper member 71 to the plate-like body, and one surface of the plate-like body ( A pair of protrusions 45a and 45b for positioning and fixing the stopper member 71 are formed on the surface facing the third arm piece 42, respectively.

  The heights of these protrusions 45a and 45b are the same as the heights of the protrusions 25a and 25b of the first frame, and are on the imaginary line opened at a predetermined angle in a fan shape with the mounting hole 44b as the center. It is provided on the outer peripheral edge of the piece 44. These protrusions 45 a and 45 b are formed by punching from the other surface of the fourth arm piece 44.

  The coupling piece 46 has a band shape, and U-shaped grooves 46a and 46b attached to the support frame 4 are formed in the vicinity of both ends.

  As shown in FIGS. 5 and 6, the connecting member 30 is bent at a substantially right angle in the same direction from both ends of the connecting piece 31 and the connecting piece 31 shorter than the connecting piece 26 of the first frame 21. The first and second connecting pieces 32 and 33 and the connecting piece 31 are integrally connected. Each of the first and second connecting pieces 32, 33 is composed of a substantially horizontally long elliptical plate-like body branched to the left and right, and a part of the outer peripheral edge of the central portion in the longitudinal direction is coupled to the end of the coupling piece 31. The left and right are the first and third coupling portions 34 and 36 and the second and fourth coupling portions 35 and 37 with the coupling portion as the center.

  A fixing hole 38 for mounting an operation bar 61 of a link mechanism 60 described later is formed in the first connecting piece 32 at substantially the center thereof. The first and third coupling portions 34 and 36 are provided with mounting holes 34a and 36a that are inserted into the operating rod 67, and the outer surfaces, that is, the inner surfaces of the first and third arm pieces 22 and 42 at the time of assembly. A plurality of cams 34b and 36b are integrally formed by pressing or the like on the surface opposite to. These cams 34b and 36b are formed radially around the respective mounting holes 34a and 36a.

  The second connecting piece 33 includes second and fourth coupling portions 35 and 37, and mounting holes 35a and 37a in which second mounting shafts 73 and 73 provided on the stopper members 71 and 71 are mounted, respectively, Locking projections 35b and 37b that are provided on the outer edge portions of the fourth coupling portions 35 and 37 and restrict the rotation of the stopper members 71 and 71 to a predetermined angle in a state where the stopper members 71 and 71 are mounted. Each is formed. Therefore, when the stopper members 71 and 71 are rotated by a predetermined angle, the locking claws 71a and 71b collide with the locking projections 35b and 37b, and the rotation is restricted. This rotation limitation is the rotation limitation of the second and fourth arm pieces 24, 44, that is, the rotation limitation of the first and second frames 21, 41.

  That is, each stopper member 71, 71 is fixed by being prevented from rotating by the mounting holes 24b, 44b and the projections 25a, 25b, 45a, 45b of the second and fourth arm pieces 24, 44. When the arm pieces 24 and 44 are rotated, the stopper members 71 and 71 are also rotated according to the rotation. When the arm pieces 24 and 44 are rotated by a predetermined angle, the locking claws 71a and 71b of the stopper members 71 and 71 are locked. The rotation is restricted by colliding with the projections 35b and 37b.

  The heights of the locking projections 35b and 37b are lower than the thickness of a stopper member 71 described later, and are formed at the bottoms of the second and fourth coupling portions 35 and 37, respectively. The protrusions 25a, 25b, 45a, 45b provided on the second and fourth arm pieces 24, 44 are not in contact with the locking protrusions 35b, 37b provided on the second and fourth coupling portions 35, 37. In addition, the length obtained by adding the heights of both protrusions is slightly shorter than the thickness of the stopper member 71.

  Here, first, the stopper mechanism 70 will be described first.

  The stopper mechanism 70 is a pair of stopper members 71 and 71 fixed to the first and second frames 21 and 41, and the stopper members 71 and 71 come into contact with the rotation of the first and second frames 21 and 41. It is comprised from the latching protrusions 35b and 37b which contact | connect and regulate the rotation.

  Since both the stopper members 71 and 71 have the same structure, the stopper member 71 attached to the 2nd arm piece 24 is demonstrated below. However, the stopper member 71 attached to the second arm piece 24 and the stopper member 71 attached to the fourth arm piece 44 are disposed symmetrically with respect to the connecting member 30 as a boundary.

  The stopper member 71 has a shape in which locking claws 71a and 71b protrude in the normal direction from two locations on the outer peripheral edge of the plate body having a substantially circular shape and a predetermined thickness, and is substantially crescent-shaped in plan view, First and second mounting shafts 72 and 73 are provided at substantially the center of the front and back surfaces, and the crescent-shaped tip portions serve as locking claws 71a and 71b. Each locking claw 71a, 71b is separated from the first mounting shaft 72 by a predetermined angle θ (not shown). The first mounting shaft 72 is formed in a non-circular shape so as to be fitted into the mounting hole 24b, and is prevented from rotating by being fitted into the mounting hole 24b of the second arm piece 24. The second mounting shaft 73 is thick enough to be inserted into the mounting hole 35 a of the second coupling part 35 and slightly longer than the thickness of the second coupling part 35. Then, after being inserted into the attachment hole 35a, the tip end portion of the second attachment shaft 73 is caulked to be rotatably fixed to the attachment hole 35a. Note that the angle θ formed by each of the locking claws 71a and 71b is, for example, equally divided into a desired maximum rotation angle when mounted on the mobile phone 1, and the angle of the locking protrusions 35b and 37b in the circumferential direction is equal to that angle. The angle plus the extension angle.

  The stopper member 71 is made of a metal material, particularly stainless steel having a high mechanical strength. When the stopper member 71 is made of such a metal material, even if an excessive force is applied to one of the first and second frames 21 and 41, the locking claws 71a and 71b are locked to the locking projections 35b and 37b. Therefore, damage or the like is less likely to occur.

  Next, the drive mechanism 50 will be described.

  Drive mechanisms 50 and 50 are provided on the coupling portion 22a of the first arm piece 22 of the first frame 21 and the coupling portion 42a of the third arm piece 42 of the second frame 41, respectively. Each of the drive mechanisms 50 and 50 includes a cam mechanism that regulates and holds the first and second frames 21 and 41 at predetermined positions, and a spring body that drives the cam mechanism, and the first and second frames 21 and 41 are provided. These frames are moved intermittently according to the rotation. Since the drive mechanisms provided in the first arm piece 22 and the third arm piece 42 have the same configuration, the same reference numerals are given, and the drive mechanism 50 attached to the first arm piece 22 is described below. Only explain.

  The cam mechanism includes a cam 34b provided in the first coupling portion 34 and a disc-shaped cam plate 55 having a cam 55b meshing with the cam 34b on one surface. The cam plate 55 is provided with a spring body pressing portion 54 whose one end is pressed by a spring body (not shown) provided in the cylindrical cap 51 and whose other end is connected to the link mechanism 60. It is integrally fixed to the operating rod 67. The spring body pressing portion 54 of the cam plate 55 has a diameter that is substantially the same as the diameter of the opening of the cylindrical cap 51 and a predetermined thickness, and faces the inner surface thereof, that is, one surface of the first coupling portion 34. A plurality of cams 55 b are formed radially from the operating rod 67 on the surface to be operated. Further, the cam plate 55 is provided with a recess 55c between the cams 55b so as to mesh with the cam 34b of the first coupling portion 34. Similarly, a recess 34 c is also formed between a plurality of cams 34 b provided on the outer surface of the first coupling portion 34. Further, the cylindrical cap 51 is fixed in the mounting hole 22b of the coupling portion 22a by the flange 53, and the spring pressing portion 54 of the cam plate 55 is fixed to the cylindrical cap 51. The first frame 21 rotates as the first frame 21 rotates. The rear end portion of the cylindrical cap 51 protrudes from the first and third arm pieces 22 and 42. The rear end portion is accommodated in the other corner portions 15a and 16a of the transmission / reception cases 2 and 10 when assembled. Is done.

  The cams 34b and 55b of each other are preferably provided in accordance with the angle when the mobile phone 1 is opened. For example, if the open state of the mobile phone 1 is 160 °, the interval between the cams is 160 ° or If it is provided at every half of 80 °, the transmission / reception cases 2 and 10 are fixed when the cams are engaged with each other, so that the transmission / reception cases 2 and 10 in the open state, the closed state, or an intermediate portion thereof are stabilized.

  Thus, when the first and second frames 21 and 41 are rotated, the cam plate 55 of the drive mechanism 50 is rotated, and the cam 55b provided on the cam plate 55 is engaged with the first and second frames. It moves against the urging force of the spring body so as to ride on the cams 34b, 36b of the three coupling portions 34, 36. Thereby, when the cams are not meshed with each other, an appropriate resistance is generated, and a snap action at the time of rotation is realized.

  Next, the link mechanism 60 will be described.

  The link mechanism 60 is provided on the first and third arm pieces 22 and 42, has a protruding bar 65 a on one surface thereof, and rotates in conjunction with the rotation of the first and third arm pieces 22 and 42. A long rod-like body rotatably fixed to the connecting member 30 by a cam piece 65, a restricting plate 63 fixed to the first connecting piece 32 of the connecting member 30, and a shaft bar 61a provided at the center. The operation bar 61 is configured to link the rotation of the first and third arm pieces 22 and 42 by fixing both ends thereof to the protruding rod 65a communicated with the restriction holes 63a and 63b provided in the restriction plate 63. And when either one of the drive mechanisms 50, 50 is driven, the other drive mechanisms are operated in conjunction with each other.

  The cam piece 65 is fixed to the first and third arm pieces 22 and 42 by a fixing member 68 provided at the distal end portion of the operating rod 67, and is linked to the drive mechanisms 50 and 50 provided in both arm pieces. In addition, a small protrusion 69 that is locked to the locking holes 64 a and 64 b of the restriction plate 63 is provided at the tip of the fixing member 68. Further, the cam piece 65 has a substantially half-moon shape, and a protruding bar 65a that engages with the restriction holes 63a and 63b of the restriction plate 63 is formed at a position away from the rotation shaft on the inner surface thereof. The rod 65a swings in an arc shape in accordance with the rotation of the cam piece 65.

  The restriction plate 63 is formed of a substantially elliptical plate-like body having substantially the same length and width as the first connecting piece 32, and is provided at both ends in the longitudinal direction of the plate-like body at the tip of the fixing member 68. A restriction hole 64a, 64b that is engaged with the small protrusion 69, and a narrow groove opening that is bent over a predetermined angle around the engagement hole and into which the protruding rod 65a is inserted. Holes 63a and 63b are provided. The protruding rod 65a inserted into the restriction holes 63a and 63b can swing within the holes, and its movement is restricted at a predetermined position.

  The actuating bar 61 is made of a rod-like body having substantially the same length as the restricting plate 63, and is provided with elliptical holes 62a, 62b provided with a predetermined length of play in the longitudinal direction at both ends. The protruding rod 65a of the cam piece 65 is inserted into the holes 62a and 62b.

  With the above-described configuration, when the link mechanism 60 is moved, for example, by rotating the first frame 21 from the open state to the closed state, the link mechanism 60 is accompanied by the rotation of the rotated first frame 21. The cam piece piece 65 connected to the first arm piece 22 rotates, whereby the protruding bar 65a of the cam piece piece 65 moves counterclockwise as viewed from the right in the restriction hole 63a. Along with this movement, a counterclockwise force is also applied to the hole 62a at one end of the operating bar 61, and the operating bar 61 rotates clockwise about the shaft bar 61a. Then, a clockwise force is applied to the protruding rod 65a of the cam piece 65 connected to the third arm piece 42 connected to the hole 62b at the other end of the operating bar 61, whereby the cam piece 65 is rotated clockwise. Accordingly, the third arm piece 42 similarly rotates clockwise in accordance with this movement, so that the first frame 21 and the second frame 41 rotate in directions opposite to each other. In addition, since it is clear that the same operation is performed in the case of shifting from the closed state to the open state, the description thereof is omitted here.

  Next, the assembly of the hinge mechanism 20 will be described with reference to FIGS.

  First, stopper members 71 and 71 are mounted on the second coupling portion 33 of the connecting member 30, respectively. The stopper member 71 is mounted by inserting the second mounting shaft 73 of the stopper member 71 through the mounting holes 35a and 37a provided in the first and second coupling portions 35 and 37 of the second connecting piece 33, The top of this shaft is caulked so as not to come out of 35a, 37a. 5 and 6 are already crimped.

  On the other hand, the cylindrical cap 51 is inserted from the inside of the mounting holes 22b and 42b of the first and third arm pieces 22 and 42, and the flange piece 52 of the cylindrical cap 51 is inserted into the groove of the first and third arm pieces 22 and 42. Insert into 22c, 42c and position. Next, a coiled spring body (not shown) is inserted into the cylindrical cap 51. The spring pressing portion 54 of the cam plate 55 is inserted and fixed in the cylindrical cap 51, and then the connecting member 30 and the first and second frames 21 and 41 are attached. In this attachment, the cam plate 55 pressed by the spring body is pushed against the spring body, and in this state, between the first and third arm pieces 22 and 42 and the second and fourth arm pieces 24 and 44. The first to fourth coupling portions 34 to 37 of the coupling member 30 are arranged on the first coupling shaft 72 of the stopper members 71 and 71 mounted on the second and fourth coupling portions 35 and 37 of the second coupling piece 33. , 72 are inserted into the mounting holes 24a, 44a of the second and fourth arm pieces 24, 44 to prevent rotation, and the locking claws 71a, 71b of the stopper members 71, 71 are connected to the protrusions 25a, 25b, 45a, It is fixed in contact with 45b.

  The operating rod 67 is inserted through the mounting holes 34a and 34b and the center of the cam plate 55 to the bottom of the inner surface of the cylindrical cap 51, and the cams 34b and 36b of the first and third coupling portions 34 and 36 are inserted. The cam 55 is engaged with the cam 55b of the cam plate 55. Subsequently, the cam piece 65 is attached to the operating rod 67. For this mounting, the cam piece 65 is inserted into the operating rod 67, a fixing member 68 is attached to the tip of the operating rod 67, and the cam piece 65 is fixed to the fixing member 68 to prevent rotation. Then, the shaft bar 61a of the actuating bar 61 is inserted into the fixing hole 38 through the insertion hole 64c of the restricting plate 63 and fixed in a freely rotatable manner, and then the locking holes 64a and 64b of the restricting plate 63 are fixed to the tip of the fixing member 68 Is inserted into the small projection 69 of the part. In addition, the protruding rod 65a of the cam piece 65 is inserted into the holes 63a and 63b of the restricting plate 63 and the holes 62a and 62b formed at both ends of the operating bar 61, and the tip is caulked.

  7 to 9 show a state where the hinge mechanism shown in FIGS. 5 and 6 is assembled, FIG. 7 is a perspective view showing a case where the hinge mechanism is closed, and FIG. 8 is a perspective view showing a state where the hinge mechanism is in the middle of opening and closing. FIG. 9 and FIG. 9 are perspective views showing a case where the hinge mechanism is in an open state.

  As shown in FIGS. 7 to 9, the assembled hinge mechanism 20 includes a first connecting portion 101 in which the first arm piece 22 and the first connecting portion 34 are connected, a second arm piece 24 and the second connecting portion. 35 is connected to the second connecting portion 102, the third arm piece 42 and the third connecting portion 36 are connected to each other, the fourth arm piece 44 and the fourth connecting portion 37 are connected to each other. The first and second frames 21 and 41 and the connecting member 30 are integrally formed by the fourth connecting portion 104, and the drive mechanism 50 and the link mechanism 60 are provided in the first and third connecting portions 101 and 103. In addition, a stopper mechanism 70 is provided in the second and fourth connecting portions 102 and 104. The axes connecting the central portions of the first and second connecting portions and the axes connecting the central portions of the third and fourth connecting portions serve as two rotation shafts of the hinge mechanism 20 of the present embodiment.

  FIG. 10 explains the relationship between the folded state of the transmission / reception case and the hinge mechanism. FIG. 10 (a) shows a state where both cases are folded with the transmission / reception case of FIG. 1 cut from the line AA. 10 (b) is an enlarged side sectional view showing the hinge mechanism in the state of FIG. 10 (a), FIG. 11 shows a state where the transmission / reception case of FIG. 10 is opened by 80 °, and FIG. 11A is a side sectional view, FIG. 11B is an enlarged side sectional view showing the hinge mechanism in the state of FIG. 11A, FIG. 12 shows a state in which the transmission / reception case of FIG. (A) is a sectional side view, FIG.12 (b) is an expanded sectional side view which shows the hinge mechanism in the state of Fig.12 (a). In FIGS. 10A, 11A, and 12A, the link mechanism is omitted so that the shape of the housing at the connecting portion can be easily understood, and FIGS. 11 (b) and FIG. 12 (b) show the hinge mechanism 20 cut at a predetermined position so that the stopper member can be seen.

  As shown in FIGS. 10 (a), 11 (a) and 12 (a), the hinge mechanism 20 is covered by being sandwiched between a pair of substantially semi-elliptical cover members 7 and 8 from the front surface and the back surface. It is attached between the transmission case 2 and the reception case 10. The cover members 7 and 8 are formed with hook-shaped locking portions 7a and 8a at one end portion in the longitudinal direction, and locking screw mounting ports 7b and 8b are formed at the other short side portions facing each other. The locking screw mounting ports 7b and 8b are communicated with each other while the locking portions 7a and 8a are locked to each other, and the connected locking screw mounting ports 7b and 8b are fixed by screws 9 with screws. Yes. At this time, by providing the locking screw mounting ports 7b and 8b at the side ends of the semi-elliptical longitudinal direction, the transmission / reception cases 2 and 10 are folded and opened at a predetermined angle. Since the screw 9 is not exposed from the talking case 2 and the receiving case 10, that is, cannot be seen from the outside, the aesthetic appearance can be improved.

  As shown in FIGS. 7 and 10B, the first and second frames 21 and 41 in the hinge mechanism in the state where the transmission / reception cases 2 and 10 are folded are in a substantially parallel state. That is, among the stopper members 71, 71, the locking claw 71 a of the stopper member 71 provided in the fourth connecting portion 104 abuts on the locking protrusion 37 b of the fourth coupling portion 37 of the connecting member 30, The locking claw 71 a of the stopper member 71 provided in the two connecting portions 102 is located at a distance from the locking projection 35 b of the second coupling portion 35. That is, when the cellular phone 1 is in the closed state, only one of the locking claws 71a of the two stopper members 71 is in contact with the locking projection 37b. For example, when the opening / closing angle of the transmission / reception cases 2 and 10 of the cellular phone 1 is 160 °, the opening / closing angle restricted by the stopper member 71 is slightly more than 160 ° (for example, about 1 to 3 °, ie, 1 This means that a large angle is set for each rotation axis, and the angle restricted by the stopper member 71 is set to be larger than the actual opening / closing angle. For example, since the stopper member 71 is not restricted even in the closed state, the transmission case 2 and the reception case 10 can be urged to be pressed against each other by the drive mechanism 50. It is possible to prevent a gap from being generated between the transmission / reception cases 2 and 10 in the state. In addition, although the case where one of the stopper members 71 and 71 abuts is described here, both the stopper members are slightly spaced (0.5 to 1.5 ° around the rotation axis, preferably 1 °). You may make it be in the state which opened. In this case, in the closed or open state of the transmission / reception cases 2 and 10, the two cases 2 and 10 are supported by contacting each other.

  Next, when one case, for example, the reception case 10 is rotated by a predetermined angle from this folded state, the other transmission case 2 is also rotated by the same angle in the opposite direction. For example, when the transmission / reception cases 2 and 10 are opened by 80 ° as shown in FIGS. 8 and 11A, the hinge mechanism 20 has the first and second frames 21 and 41 as shown in FIG. Rotate substantially the same angle, ie 40 °, in opposite directions with respect to the connecting member 30.

  Further, when the transmission / reception cases 2 and 10 are rotated and opened to 160 °, which is in the open state, the hinge mechanism 20 has the first and second frames 21 and 21 as shown in FIG. 9 and FIG. 41 are rotated by 80 ° from each other with respect to the connecting member 30, and in a state of being opened 160 °, both corners 15 a, 15 b, 16 a, 16 b of the transmission / reception cases 2, 10 come into contact with each other. The open state is supported, and the stopper members 71 and 71 are positioned with a slight gap (2 °) with respect to the locking projections 35b and 37b. However, in the open state, the transmission / reception cases 2 and 10 are brought into contact with each other and the stopper members 71 and 71 are also brought into contact with the locking projections 35b and 37b without providing such a small gap. good.

  FIG. 13 is a side view seen from the direction B in FIG. As shown in this figure, when the hinge mechanism 20 is covered with the cover members 7 and 8, the gap where the hinge mechanism 20 sandwiched between the corners 15a, 15b and 16a, 16b of the transmission / reception cases 2, 10 is connected. In the width direction is longer than the width direction of the cover members 7 and 8 constituting the hinge cover C, and the side edges of the cover members 7 and 8 and the corners 15a of the transmission and reception cases 2 and 10, A small gap of a predetermined length d is formed between 15b and 16a, 16b. If a gap is formed at this position, when the transmission / reception cases 2 and 10 are folded, the transmission / reception cases 2 and 10 and the cover members 7 and 8 are not rubbed to generate a frictional sound such as a squeak noise. It is preferable that the small gap has a structure that does not allow dust or the like to enter.

  As described above, the hinge mechanism of the embodiment is driven by the link mechanism 60 so that the rotation of the first and second frames 21 and 41 is linked with the connecting member 30 in the opposite phase. Since the rotation of both frames is always linked, a stable opening / closing operation can be realized and the transmission / reception cases 2 and 10 in the closed state are not displaced.

  In this embodiment, the drive mechanism 50 is provided at two locations of the first and third connecting portions 101 and 103, but any number of drive mechanisms 50 may be provided at any of the first to fourth connecting portions 101 to 104. However, if there is only one drive mechanism 50, since play or backlash due to backlash occurs, it is preferable to provide one for each rotating shaft. In addition, the link mechanism 60 is provided in the first and third connecting portions 101 and 103 provided with the drive mechanism 50. Any link mechanism 60 can be used as long as the first frame 21 and the second frame 41 can be linked. Preferably, the first arm piece 22 and the third arm piece 42, or the second arm piece 24 and the fourth arm piece 44 are provided so as to be linked with each other, so that the most space-saving installation can be achieved.

  In the above embodiment, the case where the cam piece pieces 65 and 65 and the operation bar 61 are used as the link mechanism 60 has been described. However, the present invention is not limited to this, and for example, one of the first and second frames 21 and 41. The link mechanism 60 may be configured by a pair of gears fixed to the arm piece and an even number of free gears provided between the gears for connecting and driving the gears.

  In addition, in the present embodiment, the connection wiring (FPC 6) is provided on the second and fourth connection portions 102 and 104 where only the stopper mechanisms 70 and 70 are provided. This is provided in such a position because it is easy to take a space around the FPC 6 to allow stress, but it is not limited to this position. Good. However, it is preferable to provide it in a connecting portion where various mechanisms are not provided as much as possible, and if the wiring is connected to a connecting portion that is close and opposed among the first and second connecting portions and the third and fourth connecting portions, the FPC 6 itself The length can be shortened and twisting and the like can be satisfactorily prevented.

  In the embodiment, the stopper mechanism 70 is also provided in the second and fourth connecting portions 102 and 104. However, any number of stopper mechanisms 70 may be provided in any of the connecting portions, but preferably one for each rotating shaft as in the driving mechanism. It shall be provided one by one. It will be apparent to those skilled in the art that the stopper mechanism 70 can be provided even in a connecting portion provided with the drive mechanism 50 and the link mechanism 60.

FIG. 1 is a perspective view showing a folding cellular phone to which a hinge mechanism according to an embodiment of the present invention is applied. FIG. 2 is a perspective view showing a state in which a housing and a case are removed from the mobile phone of FIG. 1 so that an internal mechanism such as a link mechanism can be seen; 3 is a perspective view seen from the back of FIG. 4 shows an FPC, FIG. 4 (a) is a plan view, FIG. 4 (b) is a perspective view showing the FPC in a state attached to a mobile phone, FIG. 5 is an exploded perspective view showing the hinge mechanism in an exploded manner. 6 is an exploded perspective view of FIG. 5 viewed from different directions. FIG. 7 is a perspective view showing a case where the hinge mechanism is in a closed state in a state where the hinge mechanism shown in FIGS. 5 and 6 is assembled. FIG. 8 is a perspective view showing a state in which the hinge mechanism is in the middle of opening and closing in a state where the hinge mechanism shown in FIGS. 5 and 6 is assembled. FIG. 9 is a perspective view showing a case where the hinge mechanism is in an open state in a state where the hinge mechanism shown in FIGS. 5 and 6 is assembled. FIG. 10 explains the relationship between the folded state of the transmission / reception case and the hinge mechanism. FIG. 10 (a) shows a state where both cases are folded with the transmission / reception case of FIG. 1 cut from the line AA. FIG. 10B is an enlarged side sectional view showing the hinge mechanism in the state of FIG. 11 shows a state where the transmission / reception case of FIG. 10 is opened by 80 °, FIG. 11 (a) is a side sectional view, and FIG. 11 (b) is an enlarged side sectional view showing a hinge mechanism in the state of FIG. 11 (a). , 12 shows a state in which the transmission / reception case of FIG. 10 is opened by 160 °, FIG. 12 (a) is a side sectional view, and FIG. 12 (b) is an enlarged side sectional view showing a hinge mechanism in the state of FIG. , FIG. 13 is a side view seen from the direction B in FIG. 14 shows a conventional foldable mobile phone, FIG. 14 (a) is a perspective view, FIG. 14 (b) is a partially broken enlarged front view of a hinge mechanism,

Explanation of symbols

1 Mobile phone (folding device)
2 Transmission case 6 FPC
6a, 6b Terminal piece 6c Connection piece 6 ₁ , 61 ₁ 1st ring part 6 ₂ , 6 ₂ 1st connection part 6 ₃ , 6 ₃ 2nd ring part 6 ₄ 2nd connection part 10 Reception case 20 Hinge mechanism 21 First frame 22 First arm piece 24 Second arm piece 26 Coupling pieces 26a, 26b Mounting hole 30 Connecting member (third frame)
31 coupling piece 32 first coupling piece 33 second coupling piece 34 first coupling portion 34b cam 35 second coupling portion 35b locking projection 36 third coupling portion 36b cam 37 fourth coupling portion 37b locking projection 41 second frame 42 Third arm piece 44 Fourth arm piece 46 Coupling pieces 46a, 46b U-shaped groove 50 Drive mechanism 51 Cylindrical cap 54 Spring body pressing portion 55 Cam plate 55b Cam 60 Link mechanism 61 Actuating bar 63 Restricting plate 65 Cam piece 65a Protruding bar 67 Actuating rod 70 Stopper mechanism 71 Stopper members 71a and 71b Locking claw 101 First connecting portion 102 Second connecting portion 103 Third connecting portion 104 Fourth connecting portion

Claims (10)

A pair of device cases each having at least a control circuit board therein, a hinge mechanism for rotatably connecting one side ends of the pair of device cases, and various types by electrically connecting the pair of device cases In foldable electronic equipment consisting of connecting wiring that transmits control signals, etc.,
Said s pair of device cases husband, the one end the hinge mechanism is connected, the two arm pieces that protrude a predetermined length in the direction in which the both corners is orthogonal to the one side end portion is formed, the The hinge mechanism is attached between the protruding arm pieces of a pair of device cases,
The hinge mechanism includes a first rotary shaft provided between the two arm pieces of one of the device case, and a second rotation shaft provided between the two arm pieces of the other device case,
The connection wiring, and one of the corners of the pair of device cases along said hinge mechanism is being bent wire, the connecting wire comprises first to fourth bent portion, this from one of the device case It passes through one corner of the device case , is led out to the hinge mechanism side along the first rotating shaft through the first bent portion, and is separated from the first rotating shaft through the second bent portion. Extending to the second rotating shaft side, led out of the hinge mechanism along the second rotating shaft via the third bent portion, and wired to the other device case via the fourth bent portion,
One arm piece of the one device case is interposed between the first bent portion and the second bent portion, and the other device case is interposed between the third bent portion and the fourth bent portion . A foldable electronic device characterized in that one arm piece is interposed.   2. The foldable electronic device according to claim 1, wherein the connection wiring is wired so as to pass through one of the adjacent corner portions of the pair of device cases.   The foldable electronic device according to claim 1, wherein the connection wiring is a flexible printed wiring board.   The flexible printed wiring board is composed of an elongated film-like body in which terminal pieces connected to connection portions provided on the control circuit board are formed at both ends, and a middle portion in the longitudinal direction is substantially U-shaped. The foldable electronic device according to claim 3, wherein the foldable electronic device is bent.   5. The folding electron according to claim 4, wherein two sides extending in a direction orthogonal to a longitudinal direction of the flexible printed wiring board are wired along the first and second rotation axes of the hinge mechanism. machine.   Each side extending in a direction parallel to the longitudinal direction of the flexible printed circuit board is wound at a predetermined angle around the first and second rotation axes at a position close to each bent portion bent in the U shape. The foldable electronic device according to claim 4, wherein the electronic device is a foldable electronic device.   The folding electronic device according to claim 4, wherein each of the bent portions bent in the U shape is bent in an arc shape.   The foldable electronic device according to claim 3, wherein a plurality of the flexible printed wiring boards are wired so as to overlap each other.   The foldable electronic device according to claim 1, wherein the connection wiring is a coaxial cable having a predetermined diameter.   The coaxial cable is formed of a flexible cable-like body in which terminal pieces connected to connection portions provided on the control circuit board are formed at both ends, and the axial center of the first and second rotating shafts. The foldable electronic device according to claim 9, wherein the foldable electronic device is wired so as to pass through a communication hole formed along the communication hole.

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