JP2006183870A - Hinge device and portable telephone set using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge device which is excellent in durability and a fold type portable telephone using it. <P>SOLUTION: The hinge device revolvably intercouples the element 13 and the cover 12 of the portable telephone. The hinge device is provided with a shaft element 8 provided with a head, a cam mechanism comprising a cam member maintaining and releasing an engaging state with a disc member in the closing position and the opening position of the cover, an energizing means 3 to maintain an engaging state between the cam member and the disc member, a case 7 where a fit-in part having wall surfaces parallel to each other formed at right and left is situated and cylinders in a cross-sectional elips-like shape consisting of a circular arc are formed at the upper and lower sides, a bottom in which a hole is formed is situated at one end of the cylinder, an insert is securely fitted in a cylinder on the side of the one of the element 13 and the cover 12, and a hook 1 provided with a plurality of fastening claws fixed at the shaft end of the shaft element and protruding from a substrate and formed that the fastening claws are securely fitted in the hole on the side of the other of the element and the cover. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hinge device and a foldable mobile phone using the hinge device.

  2. Description of the Related Art In recent years, a foldable portable device that has a sufficient size as an operation unit or a display unit when used in a portable device or the like and is folded when not in use and is convenient for carrying has become widespread. This foldable mobile phone is configured such that a main body as a transmitter and a lid as a receiver are connected by a hinge device so as to be freely opened and closed.

  As a hinge device used between the main body A and the cover (lid body) B of the mobile phone, for example, the one shown in FIG. 16 is disclosed (Japanese Patent Laid-Open No. 2001-1527286). The hinge device 80 includes one hinge member 81 and another hinge member 83 that is rotatably connected to the hinge member 81 via a connecting shaft 82.

  The one hinge member 81 has a cylindrical shape, the rotation shaft portion of the connecting shaft 82 is rotatably inserted into the one hinge member 81, and the tip portion penetrates the hinge member 81, and the other hinge The member 83 is fitted and fixed. A movable member 84 is disposed inside one hinge member 81, and guide portions are formed on both sides of the movable member 84.

  On the other hand, the other hinge member 83 includes a contact member 85 on the hinge member 81 side and a support member 86 on the opposite side. The movable member 84 is biased toward the contact member 85 by a coil spring 87, and a pair of pressing protrusions 88 are formed on an end surface facing the contact member 85, and the movable member 84 and the contact member A cam mechanism is formed between the cam 85 and the cam 85. Thereby, it becomes possible to turn between one hinge member 81 and the other hinge member 83, and the hinge mechanism which connects the main body A and the cover B so that rotation is possible is comprised.

  In the hinge device, between the movable member 84 and the abutting member 85, that is, between one hinge member 81 and the other hinge member 83, both slide and move relative to each other as a cam mechanism. Do exercise. Usually, a lubricant is filled between the two to make the rotation smooth.

  However, between the one hinge member 81 and the other hinge member 83 is disposed in an exposed state, and is easily affected by the use environment of the portable device, and dust and the like are easily attached thereto. For this reason, there is a problem that the amount of dust increases with time, the smoothness of the cam mechanism is lost, and the durability is impaired.

  The present invention has been made in view of the above problems, and an object thereof is to provide a hinge device having excellent durability and a mobile phone using the hinge device.

  In order to solve the above technical problem, as shown in FIG. 1 or FIG. 10, the present invention has a bottom portion formed at one end in a hinge device that rotatably connects a main body 13 and a lid 12. Cylindrical cases 7 and 66, disk members 6 and 65 housed in the bottom of the case and rotated integrally with the case, and housed in the case, and the lid 12 is closed and opened. In the position, cam members 4 and 64 that maintain the engaged state with the disk member and fix the lid portion 12 while releasing the engaged state by the opening and closing operation of the lid portion 12. The urging means 3 and 63 that press the cam member toward the disk member at one end to maintain the engagement with the disk member, and prevent the other end of the urging means from moving in the axial direction And rotate integrally with the cam member. A stopper 2,62, a structure having.

  Further, as shown in FIG. 1, the hinge device according to the present invention accommodates and holds a part of the sphere 5 in the disk member 6 so as to be rotatable, while the cam member 4 has a pair of recesses in which a smooth wall surface is formed. 38 is provided, and the spherical body 5 escapes from the recess 38 against the biasing means 3 as the lid body portion 12 is rotated by opening and closing movement, and the lid body portion 12 is in the open position and the closed position. The spherical body 5 is engaged with the recess 38 and the lid 12 is fixed.

  In addition, as shown in FIG. 10, the hinge device according to the present invention is provided with a concave or convex portion having a smooth wall surface formed on the disk member 65, while a convex or smooth wall surface is formed on the cam member 64. The concave portion is provided with a concave and convex engagement structure, and the convex portion escapes from the concave portion against the urging means 63 as the lid body portion 12 is rotated by opening and closing movement, and the lid body portion In the open position and the closed position, the convex portion engages with the concave portion and the lid body portion 12 is fixed.

  Further, in the hinge device according to the present invention, a part of the shaft portion is rotatably inserted into the center portions of the bottom portions of the cases 7 and 66 and the hole portions provided in the center portions of the disk members 6 and 65, respectively. On the other hand, the other part of the shaft part is fitted into the fitting holes provided in the center part of the cam members 4 and 64 and the center part of the stoppers 2 and 62 so that the cam member and the stopper are integrated with each other. This is a configuration having pivotable shaft bodies 8 and 67.

  The mobile phone according to the present invention is provided with hooks 1 and 61 that rotate integrally with the stoppers 2 and 62, and one side of the main body part 13 having a transmitting part or the like or the lid part 12 having a receiving part or the like. The main body part 13 and the lid part 12 are pivotally connected to each other using the hinge device according to any one of the above, wherein the cases 7 and 66 are fixed to the other side and the hook is engaged with the other side. It is a configuration.

  According to the hinge device of the present invention, the engagement state between the disc member housed in the bottom portion of the case and the disc member is maintained to fix the lid portion, and the engagement state is released by the opening / closing operation. The cam member, the biasing means for maintaining the engaged state, and the stopper for preventing the movement of the biasing means, so that the intrusion of dust is prevented and the cam mechanism operates smoothly. In addition, the durability of the cam mechanism is enhanced, and the cam mechanism is housed in the case, so that leakage of the lubricant filled in the cam mechanism is prevented, and the main body part and the lid part may be soiled. There is no effect.

  Further, according to the hinge device of the present invention, the sphere is stored and held in the disk member, while the cam member is provided with a recess, and the sphere engages with the recess in the open position and the closed position of the cover body portion, and the lid body portion. In addition to the above effects, there is an effect that the cam mechanism operates smoothly.

  Further, according to the hinge device of the present invention, the disc member is provided with a recess or a protrusion, while the cam member is provided with a protrusion or a recess to form an uneven engagement structure, and the lid portion is opened and closed. Since the configuration in which the convex portion engages with the concave portion and the lid portion is fixed at the position is adopted, in addition to the above effects, there is an effect that the cam mechanism can be configured compactly and the apparatus can be downsized.

  According to the mobile phone of the present invention, the hook that rotates integrally with the stopper is provided, and the case is fixed to one side of the main body or the lid, while the hook is locked to the other side and the main body and the lid. Since the structure is connected to the unit so that it can rotate, the intrusion of dust is prevented, the smooth operation of the cam mechanism is maintained, and the durability of the cam mechanism is enhanced. Since it is housed, the lubricant filled in the cam mechanism is prevented from leaking and the mobile phone is not soiled.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of a hinge device 11 according to the first embodiment, which is used in a portable device such as a folding cellular phone. As shown in FIG. 2, the external appearance shape of the hinge device 11 includes a hook 1, a stopper 2, a case 7, and a cover 9, and other members are housed inside the case 7.

  As shown in FIG. 3, the foldable mobile phone has a lid 12 that is a receiver that is provided with a display screen and a main body 13 that is a transmitter that is provided with operation keys and the like. The stopper 2 of the hinge device 11 is locked to the cylindrical portion provided on the lid body portion 12, and the case 7 of the hinge device 11 is fitted and fixed to the cylindrical portion provided on the main body portion 13. And the lid 12 are opened and closed.

  The hinge device 11 includes a hook 1, a stopper 2, a coil spring 3, a cam member 4, two spheres 5, a disk member 6, a case 7, a shaft body 8, and a cover 9 as constituent members. Among these members, a cam mechanism is mainly constituted by the cam member 4, the sphere 5 and the disk member 6.

  The hook 1 and the cover 9 are made of synthetic resin such as ABS, the shaft body 8 is made of aluminum or metal such as steel, and the coil spring 3 is made of steel. The stopper 2, cam member 4, sphere 5, disk member 6 and case 7 are made of metal such as steel or stainless steel. The stopper 2, the cam member 4, the disk member 6, the case 7, and the shaft body 8 are preferably subjected to surface treatment such as electroless Ni plating or Ni plating.

  Here, each component will be described. As shown in FIG. 4, the hook 1 has four locking claws 20 formed outward from the substrate 21, and a square hole 22 is provided in the center of the substrate 21. In addition, fitting grooves 24 are provided on the left and right portions of the outer surface of the substrate 21. As shown in FIG. 1, the stopper 2 is provided with a square hole 26 at the center of a disc-shaped base, and with fitting grooves 28 at the left and right portions of the base. The coil spring 3 is a compression spring and biases the cam member 4.

  As shown in FIG. 5, the cam member 4 is a member in which a shaft portion 34 provided with a through hole 32 is formed so as to protrude from the central portion of the hollow disc portion 30. The through-hole 32 is formed continuously and in the same shape from the disc portion 30, and the shape of the hole is an oval shape in which the upper and lower portions are parallel and the left and right portions are arcs. In addition, a shallow groove-shaped guide path 36 is formed on the outer surface of the disk portion 30, and concave portions 38 are formed on the upper and lower portions of the guide path 36. The concave surface portion 38 is a shallow spherical hole that forms a part of a spherical surface, and the radius of the spherical surface is larger than the radius of the CC line cross section of FIG. 5B. When the sphere 5 enters the spherical wall surface of the concave surface portion 38, the moving speed of the sphere 5 is urged.

  FIG. 6 shows the disk member 6. The disk member 6 has an outer shape of a flat part 41 that is a parallel part on the left and right sides, and an elliptical plate body that has an arc part on the top and bottom. In the center, a circular hole 40 is provided. On one surface of the disk member 6, a hemispherical deep hole 42 is formed at each of the upper and lower portions on the same circumference. These hole portions 42 are rotatably held in a state where approximately half or more of the spheres 5 are accommodated.

  As shown in FIG. 7, the case 7 is a cylindrical container in which a bottom portion 46 having a through hole 44 is formed at one end side and an opening 45 is formed on the other end side. The cylindrical portion 47 of the case 7 is formed with wall surfaces parallel to the left and right, and the upper and lower sides have an elliptical cross section formed by an arc. The parallel wall surface is fitted as a fitting portion 48 with a cylindrical portion provided in the main body portion 13 of the mobile phone. In the case 7, the disk member 6, the sphere 5, the cam member 4, and the coil spring 3 are accommodated.

  As shown in FIG. 8, the shaft body 8 includes a disk-shaped head portion 50 and a shaft portion 52. A square shaft section 54 having a quadrangular cross section is formed at the tip of the shaft section 52, a section 56 having an oval section in the middle section of the shaft section 52, and a section near the head 50 of the shaft section 52. Are formed with cylindrical portions 58 each having a circular cross section.

  As shown in FIG. 9, the hinge device 11 has a case 7 in which a disk member 6, a cam member 4, and a coil spring 3 in which a sphere 5 is fitted from the back are accommodated. Then, the coil spring 3 is fitted on the outer periphery of the shaft portion 34 of the cam member 4, one end portion of the coil spring 3 is brought into contact with the disc portion 30 of the cam member 4, and the other end portion of the coil spring 3 is applied to the stopper 2. The stopper 2 is disposed outside the opening 45 of the case 7.

  Then, the shaft portion 52 of the shaft body 8 is inserted from the through hole 44 of the bottom portion 46 of the case 7, and the disk member 6, the cam member 4, the coil spring 3, and the stopper 2 are inserted, and the hook 1 is attached to the tip portion of the shaft portion 52. The hinge device is assembled by crimping the end of the shaft portion 52 that finally protrudes from the hook 1.

  In this state, the disk member 6, the sphere 5, the cam member 4, and the coil spring 3 are housed in the case 7, while the opening 2 45 of the case 7 is closed by the stopper 2. At this time, the oval through hole 32 of the cam member 4 is fitted into the oval portion 56 of the shaft body 8, and the square hole 26 and the hook of the stopper 2 are fitted to the angular shaft portion 54 of the shaft body 8. One square hole 22 is fitted together.

  Thereby, the cam member 4, the stopper 2 and the hook 1 rotate integrally with the shaft body 8, and when the cam member 4 rotates, the shaft body 8 rotates, and further, the stopper 2 and the hook 1 rotate. On the other hand, the through hole 44 of the case 7 and the hole 40 of the disk member 6 are inserted into the cylindrical portion 58 of the shaft body 8. Therefore, the case 7 and the disk member 6 are free with respect to the rotation of the shaft body 8, and the disk member 6 is fitted in the case 7, so that the disk member 6 and the case 7 rotate integrally. .

  Further, the cam member 4 is always urged toward the disk member 6 by the coil spring 3, and a cam mechanism is formed between the cam member 4 and the disk member 6 via the sphere 5. Therefore, this hinge device constitutes a hinge mechanism in which the stopper 2 and the hook 1 rotate with respect to the case 7 via the cam mechanism.

  When this hinge device is attached to the cellular phone shown in FIG. 3, the latching claw 20 of the hook 1 of the hinge device 11 is latched in the hinge mounting hole provided in the lid portion 12 of the cellular phone, At the same time, the stopper 2 is fitted and fixed, and the fitting portion 48 of the case 7 of the hinge device is fitted and fixed to the cylindrical portion for mounting the hinge provided on the main body portion 13.

  In the mobile phone equipped with the hinge device, when the lid 12 is opened by hand, the cam mechanism is activated. At this time, the cam member 4 rotates together with the stopper 2 (hook 1), the concave surface portion 38 of the cam member 4 comes out of engagement with the sphere 5 held by the disk member 6, and the sphere 5 moves along with the rotation of the cam member 4. Rolls on the guide path 36 of the cam member 4, and the concave portion 38 moves in the direction of the other sphere 5. Eventually, when the expansion of the lid portion 12 is completed, the concave surface portion 38 engages with the other sphere 5.

  Such cam operation between the disk member 6 and the cam member 4 is performed in the interior of the case 7. By filling the cam mechanism with a lubricant, the operation of the cam mechanism becomes smoother. Further, when engaged, the urging force of the coil spring 3 adds a momentum to the entry of the sphere 5 into the concave surface portion 38, and a click feeling is obtained. This click feeling is obtained when the rotation of the lid portion 12 is completed, and gives a sharp feeling to the opening and closing of the lid portion 12.

  During the closing operation of the lid body portion 12, the cam member 4 rotates with the closing movement of the lid body portion 12, and the concave surface portion 38 comes out of engagement with the other sphere 5 and moves in the direction of the original sphere 5. When the concave portion 38 is engaged with the original sphere 5, the momentum increases as in the above-described opening, and the lid portion 12 is closed together with the click feeling. If a clearance is provided between the case 7 and the disk member 6 so that the disk member 6 is loosely fitted in the case 7, a cam member sound is generated when the lid 12 is opened and closed. Gives 12 more opening and closing feelings.

  Therefore, according to the mobile phone using the hinge device 11 according to the above embodiment, since the cam member and the disk member as the cam mechanism are arranged in the back of the case, the intrusion of dust is prevented and the cam mechanism operates smoothly. Is maintained and the durability of the cam mechanism is enhanced. Further, since the cam mechanism is housed in the case 7, the lubricant filled in the cam mechanism is satisfactorily held, the leakage of the lubricant is prevented, and the mobile phone is not soiled. Furthermore, since it is not influenced by dust, the click feeling at the time of opening and closing the cover body part 12 is favorably sustained over a long period of time.

  FIG. 10 shows a hinge device according to the second embodiment. The hinge device 15 is used in a portable device such as the folding cellular phone shown in FIG. 3 in the same manner as the hinge device 11 according to the first embodiment. The hinge device 15 is different in that a cam mechanism that does not use the sphere 5 according to the hinge device 11 is configured for miniaturization.

  As shown in FIG. 11, the external shape of the hinge device 15 is formed by a hook 61, a stopper 62, a case 66 and a cover 68, and the other members are housed in the case 66, as with the hinge device 11. The hinge device 15 includes a hook 61, a stopper 62, a coil spring 63, a cam member 64, a disk member member 65, a case 66, a shaft body 67, and a cover 68 as constituent members. Among these members, a cam mechanism is mainly constituted by the cam member 64 and the disk member member 65.

  Of the constituent members of the hinge device 15, the hook 61, the stopper 62, the coil spring 63, and the shaft body 67 have the same basic structure as the hook 1, the stopper 2, the coil spring 3, and the shaft body 8 according to the hinge device 11, respectively. Therefore, explanation here is omitted.

  As shown in FIG. 12, the cam member 64 is a member in which a shaft portion 74 provided with a through hole 72 is formed to protrude from the center portion of the hollow disc portion 70. The through-hole 72 is formed continuously and in the same shape from the disc portion 70, and the shape of the hole is an oval shape whose upper and lower parts are parallel and whose left and right parts are arcs. Further, the disc portion 70 is formed with engaging convex portions 76 at left and right portions sandwiching the through hole 72. The engaging convex portion 76 is a trapezoidal convex portion with the left and right side surfaces 75 inclined, and the ridge line is formed toward the center of the disc portion 70, and the upper surface portion is reduced toward the center.

  FIG. 13 shows a disk member 65. This disk member 65 is a plate-like body in which a circular hole 78 is provided at the center and an outward projecting portion 79 is formed at a part of the periphery. . The disk member 65 is provided with engagement recesses 80 at the left and right portions sandwiching the hole 78, and an annular flat guide path 81 is formed between the engagement recesses 80. Both side surfaces of the engaging recess 80 form tapered surfaces 82 inclined in a mortar shape. The engaging convex portion 76 of the cam member 64 is fitted into and engaged with the engaging concave portion 80 of the disk member 65.

  As shown in FIG. 14, the case 66 is a cylindrical container in which a bottom portion 84 having a through-hole 82 is formed in the central portion on one end side and an open port 87 is formed on the other end side. The cylindrical portion 85 of the case 66 has a shape in which an outward protruding portion 86 is formed in part. The protruding portion 86 has a flat cylindrical surface and is fitted with a cylindrical portion provided on the main body portion 13 of the mobile phone. In the case 66, the disk member 65, the cam member 64, and the coil spring 63 are accommodated.

  As shown in FIG. 15, the hinge device 15 houses a disc member 65 and a cam member 64 from the back in a case 66. Then, the coil spring 63 is fitted on the outer periphery of the shaft portion 74 of the cam member 64, and one end portion of the coil spring 63 is brought into contact with the disc portion 70 of the cam member 64. On the other hand, the other end of the coil spring 63 is brought into contact with the stopper 62, and the stopper 62 is disposed outside the opening 87 of the case 66.

  Then, the shaft portion 52 of the shaft body 67 is inserted from the through hole 82 in the bottom portion 84 of the case 66, the disk member 65, the cam member 64, the coil spring 63, and the stopper 62 are inserted, and the hook 61 is attached to the distal end portion of the shaft portion 52. The hinge device is assembled by crimping the end portion of the shaft portion 52 that finally protrudes from the hook 61.

  In this state, the disk member 65, the cam member 64, and the coil spring 63 are accommodated in the case 66, while the opening 62 of the case 66 is closed by the stopper 62. At this time, an oval through hole 72 of the cam member 64 is fitted into the oval portion 56 of the shaft body 67, and the square hole 26 and the hook of the stopper 62 are fitted to the angular shaft portion 54 of the shaft body 67. 61 square holes 22 are fitted together.

  Thereby, the cam member 64, the stopper 62, and the hook 61 rotate integrally with the shaft body 67. When the cam member 64 rotates, the shaft body 67 rotates, and further, the stopper 62 and the hook 61 rotate. On the other hand, a through hole 64 of the case 66 and a hole 78 of the disk member 65 are inserted into the cylindrical portion 58 of the shaft body 67. Therefore, the case 66 and the disk member 64 are free with respect to the rotation of the shaft body 67, and the disk member 64 is fitted in the case 66. Therefore, the disk member 64 and the case 66 rotate integrally. To do.

  Further, the cam member 64 is always biased toward the disk member 64 by the coil spring 63, and the cam member 64 and the disk member 64 form a cam mechanism. Therefore, this hinge device constitutes a hinge mechanism in which the stopper 62 and the hook 61 rotate with respect to the case 66 via the cam mechanism. The hinge device 15 is used by being attached to the mobile phone shown in FIG.

  In the mobile phone equipped with the hinge device, when the lid 12 is opened by hand, the cam mechanism is activated. At this time, the cam member 64 rotates together with the stopper 62 (hook 61), and the engaging convex portion 76 of the cam member 64 comes out of engagement with the engaging concave portion 80 of the disc member 65, and slides on the guide path 81 of the disc member 65. It moves and moves toward the other engaging recess 80. Eventually, when the expansion of the lid body 12 is completed, the engagement convex portion 76 of the cam member 64 engages with another engagement concave portion 80.

  Such a cam operation between the disk member 65 and the cam member 64 is performed in the interior of the case 66. By filling the cam mechanism with a lubricant, the operation of the cam mechanism becomes smoother. Further, at the time of engagement, due to the biasing force of the coil spring 63, the engagement convex portion 76 of the cam member 64 slides down the tapered surface 82 of the engagement concave portion 80, and at this time, momentum is added to the engagement and a click feeling is obtained. . This click feeling is obtained when the rotation of the lid body portion 12 is completed, and gives a sharp feeling to the opening and closing of the lid body portion 12.

  During the closing operation of the lid 12, the cam member 64 rotates with the closing movement of the lid 12, and the engagement protrusion 76 comes out of the engagement of the engagement recess 80 of the disk member 65 and is the original engagement recess 80. Move in the direction of. When the engaging convex portion 76 engages with the original engaging concave portion 80, the momentum increases as in the above-described opening, and the lid portion 12 is closed together with a click feeling. If a clearance is provided between the case 66 and the disk member 65 so that the disk member 65 is loosely fitted in the case 66, a cam member sound is generated when the lid body portion 12 is opened and closed, thereby further opening and closing. You can get a sharp feeling.

  Therefore, according to the mobile phone using the hinge device 15 according to the second embodiment, since the disc member and the cam member as the cam mechanism are arranged in the back of the case, the intrusion of dust is prevented and the cam mechanism The smooth operation of the cam mechanism is maintained, and the durability of the cam mechanism is enhanced. Further, since the cam mechanism is housed in the case, the lubricant filled in the cam mechanism is prevented from leaking and the mobile phone is not soiled. Furthermore, since no dust adheres, the click feeling is maintained well for a long time when the lid 12 is opened and closed.

It is a figure which shows the disassembled perspective view of the hinge apparatus which concerns on 1st embodiment of this invention. The external appearance of the hinge apparatus which concerns on 1st embodiment is shown, (a) is a front, (b) is a figure which shows the right side. It is the schematic which shows the mobile telephone using the hinge apparatus which concerns on embodiment. (A) is a front view, (b) is a right side surface, (c) is a left side surface, and (d) is a cross-sectional view taken along the line AA. (A) is a front view, (b) is a left side view, (c) is a right side view, (d) is a cross section taken along line BB, and (e) is a cross section taken along line CC. (F) is a figure which shows the DD line | wire cross section. (A) is a right side surface, (b) is a front surface, (c) is a left side surface, and (d) is a cross-sectional view taken along line EE, with respect to the disk member of the hinge device. (A) is a front view, (b) is a right side surface, and (c) is a cross-sectional view taken along the line FF with respect to the case of the hinge device. (A) is a front view, (b) is a cross-sectional view taken along line GG, (c) is a plane, and (d) is a right side view of the shaft body of the hinge device. It is a figure which concerns on 1st embodiment and shows the cross section of a hinge apparatus. It is a figure which shows the disassembled perspective view of the hinge apparatus which concerns on 2nd embodiment of this invention. The external appearance of the hinge apparatus which concerns on 2nd embodiment is shown, (a) is a front, (b) is a figure which shows a right side. (A) is a front view, (b) is a left side surface, (c) is a right side surface, (d) is a cross section taken along the line HH, and (e) is a cross section taken along the line II. FIG. (A) is a right side surface, (b) is a cross-sectional view taken along the line JJ, and (c) is a cross-sectional view taken along the line KK with respect to the disk member of the hinge device. (A) is a left side surface, (b) is a right side surface, and (c) is a cross-sectional view taken along line LL, with respect to the case of the hinge device. It is a figure which concerns on 2nd embodiment and shows the cross section of a hinge apparatus. (A) is a front view and (b) is a figure which shows a cross section of the hinge apparatus which concerns on a prior art example.

Explanation of symbols

1, 61 Hook 2, 62 Stopper 3, 63 Biasing means (coil spring)
4, 64 Cam member 5 Spherical body 6, 65 Disc member 7, 66 Case 8, 67 Shaft body 12 Lid body part 13 Main body part

Claims (6)

In the hinge device that rotatably connects the main body portion and the lid portion of the mobile phone,
A shaft body provided with a head having an enlarged diameter at one end of the shaft portion;
While the disk member inserted through the shaft portion of the shaft body and the closed position and the open position of the lid body portion, the engaged state with the disk member is maintained and the lid body portion is fixed. A cam mechanism composed of a cam member that is released from the engaged state by rotation by opening and closing the
An urging means that is inserted through the shaft body and urged so that the cam member is pressure-bonded in the direction of the disk member, and maintains an engaged state with the disk member;
The urging means is housed together with the shaft body, and a fitting portion is formed in which wall surfaces parallel to the left and right are formed, and a cylindrical portion having an elliptical cross section formed of an arc is formed on the upper and lower sides. One end portion of the shaft body is formed with a bottom portion in which a shaft portion of the shaft body is inserted and a hole portion to which the head portion is engaged is formed, and the fitting is fitted to the cylindrical portion on one side of the main body portion or the lid portion. A case where the part is fitted and fixed,
A substrate that is fixed to a shaft end portion of the shaft body through which the case, the biasing means, and the cam mechanism are inserted, and that constrains each member within the range of the shaft portion, and a plurality of latches that are formed to protrude from the substrate. A hinge device comprising a claw and a hook for locking the locking claw to the hole on the other side of the main body or the lid. While providing a concave or convex portion in which a smooth wall surface is formed on the disk member,
The cam member is provided with a convex portion or a concave portion having a smooth wall surface to form a concave-convex engaging structure, and the convex portion resists the biasing means as the lid body is rotated by opening and closing movement. Escape from the recess,
2. The hinge device according to claim 1, wherein the convex portion engages with the concave portion at the open position and the closed position of the lid portion and the lid portion is fixed.   The hinge device according to claim 2, wherein the convex portion is formed in a trapezoidal cross section in the circumferential direction, and the ridge line is formed in a shape in which the upper surface portion is reduced toward the center of the disk portion.   A large step portion having a larger diameter than the shaft portion is provided between the head portion and the shaft portion of the shaft body, and a concave step portion capable of attaching a cover is provided between the bottom portion of the case and the head portion. The hinge device according to claim 1, wherein the hinge device is formed.   The hinge device according to any one of claims 1 to 4, wherein a clearance is provided between the case and the cam mechanism so as to obtain a sharp feeling when the lid is opened and closed. While fitting and fixing the fitting portion of the case to the cylindrical portion on one side of the lid portion having the main body portion or the receiving portion etc. having a transmitting portion or the like,
The hinge device according to any one of claims 1 to 5, wherein the hook is locked in the hole on the other side, and the main body portion and the lid body portion are rotatably connected. Mobile phone.

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