JP4625424B2 - Hinge device and portable device - Google Patents

Description

  The present invention is used when a first casing and a second casing constituting an OA apparatus such as a portable computer such as a notebook computer or a copier are connected to each other so as to be relatively rotatable in a state where they are overlapped with each other. The present invention relates to a suitable hinge device and a portable device.

A notebook personal computer or the like, which is a type of portable device, includes a first housing provided with a keyboard or the like on a top surface, and a second housing provided with a display or the like, and the first housing and the second housing, Are connected to each other by a hinge device so as to be openable and closable. In this notebook computer, a second housing is rotatably connected to a rear portion of the upper surface of the first housing via a hinge device, and a display of the second housing is provided on an upper surface having a keyboard of the first housing. In addition, the keyboard and the display can be exposed by opening the display from the superimposed state. That is, when the keyboard and the display are not exposed in the closed state in which the first casing and the second casing are overlapped when not in use, in order to expose the keyboard and the display, for example, The first housing is fixed with one hand, and the second housing is rotated with respect to the first housing via the hinge device so that the keyboard and the display are exposed by grasping the second housing with the other hand. By doing so, the keyboard and the display are exposed to be in an open state, and the notebook computer can be used. As the hinge device, the first housing and the second housing are pivotably connected, and the second housing is connected to the first housing with the first housing and the second housing opened. On the other hand, what can be held in that state without being naturally closed has been proposed (for example, see Patent Document 1).
JP 2003-120650 A

  The hinge device described in Patent Document 1 generates a frictional force between a support member fixed to the first housing and a rotating shaft fixed to the second housing, and the frictional force causes the first to be generated. One housing and the second housing are held in a desired open state. In this way, the first housing and the second housing are held in a desired open state by the frictional force generated between the first housing and the second housing, but this frictional force is Since it occurs not only in the open state but also in the closed state, that is, it always occurs, when rotating the first housing and the second housing from the closed state to the open state, If a force larger than the frictional force is not always applied, the second housing cannot be rotated with respect to the first housing, and the operability is poor.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a hinge device that can be opened and closed with high operability and a portable device including the hinge device.

In order to achieve the above object, a hinge device according to the present invention rotates a first housing and a second housing relative to each other about a hinge shaft so as to rotate the first housing and the second housing. Is a hinge device that forms a closed state in which the first housing and the second housing are opened, and a hinge device in which the first housing and the second housing are opened. An attachment member that is attached to one of the housings and rotatably supports the hinge shaft; and the hinge shaft that is attached to the other housing of the first housing and the second housing. Is attached to the attachment member between a closed position where the first casing and the second casing are overlapped with each other and an open position where the first casing and the second casing are opened. a support member can pivot, to rotate together with the hinge shaft A cylindrical cam body, a movable body which is provided so as to be movable in the vertical direction into the mounting member, contacts the cam body, a biasing member which biases the movable body to press the cam body, and the cam A cam convex portion projecting from a peripheral surface of the body, and the cam convex portion between a first position of a predetermined closing angle of the second casing relative to the first casing and the closed position. From the first position of the second casing with respect to the first casing; and a suction mechanism for biasing the support member in the closing direction with respect to the mounting member A hop-up mechanism for urging the support member in the opening direction with respect to the mounting member by contacting the movable body with the other inclined surface of the cam projection until a second position of a predetermined opening angle; The support member is opened from the second position with respect to the mounting member. When it is positioned in direction forwardly, characterized in that in that position the second housing provided with a friction mechanism for generating friction between the attachment member and the hinge shaft to stop.

  According to this invention, in order to change (open) the first casing and the second casing from the closed state, the first casing is rotated in the opening direction with respect to the second casing. The support member is rotated in the opening direction with respect to the attachment member. At this time, when the support member passes the first position, it receives the urging force of the hop-up mechanism and automatically rotates to reach the second position. When the rotation of the support member is stopped when the second position is exceeded, the support member is stopped at that position by the friction mechanism, and the first housing and the second housing can be used. When closing the opened first casing and second casing, the first casing (support member) is rotated in the closing direction with respect to the second casing (attachment member). At this time, when the support member passes the first position, it automatically rotates by the suction mechanism to reach the closed position, and the first housing and the second housing are held in the closed state. Thus, by holding the first housing and the second housing in the closed state, a latch mechanism for locking the first housing and the second housing in the closed state can be made unnecessary. . As a result, the unlocking operation for unlocking when opening the first housing and the second housing is unnecessary. Accordingly, there is a region where the first housing (supporting member) automatically rotates during the opening / closing operation, and an unlocking operation for releasing the lock when opening is unnecessary, so that the opening / closing operation can be performed with good operability. Yes.

  In the hinge device according to the present invention, a rotation range of the support member with respect to the attachment member is 180 °, and a rotation angle of the support member with respect to the attachment member is set to 0 ° at the closed position. Preferably, the rotation angle of the support member relative to the attachment member at the first position is 15 °, and the rotation angle of the support member relative to the attachment member at the second position is 45 °. .

Further, in the hinge device according to the present invention, the moving body is a slider member provided in the mounting member so as to be capable of reciprocating in the vertical direction, and the urging member attaches the slider member to the cam body. Desirably, one or more compression springs are pressed by force.

  Further, in the hinge device according to the present invention, the friction mechanism is attached to the attachment member and is rotated together with the cam A body through which the hinge shaft passes, and the hinge shaft, and is movable in the axial direction of the hinge shaft. The cam B body that comes into surface contact with the cam A body, the friction biasing means that biases the cam B body against the cam A body, and the cam A convex portion provided on the contact surface of the cam A body And when the support member is positioned forward of the mounting member in the opening direction with respect to the mounting member, the cam A convex portion and the front end surface of each other are located on the contact surface of the cam B body. It is preferable to have a cam B convex portion that is in surface contact and generates the friction between the hinge shaft and the mounting member. In the hinge device according to the present invention, the cam A body and the cam B body are each formed in a disc shape, and the friction biasing means is one or more ring-shaped leaf springs. Is preferred. In the hinge device according to the present invention, the cam A convex portion has a first cam A convex portion formed in an arc shape with the hinge shaft as a center, and a diameter different from the first cam A convex portion. The cam B convex portion is formed in an arc shape centering on the hinge shaft, and includes the first cam A convex portion and a second cam A convex portion formed at a position facing the hinge shaft as a center. Is a first cam B convex portion formed in an arc shape centering on the hinge shaft, an arc shape centering on the hinge shaft with a different diameter from the first cam B convex portion, and the first cam B convex portion It is preferable that the first cam B convex portion and the second cam B convex portion formed at positions facing each other with the hinge shaft as a center.

  A portable device according to the present invention includes the hinge device according to the present invention. According to this invention, as described above, when the support member passes the first position when opening the first housing and the second housing, the support member automatically rotates under the urging force of the hop-up mechanism. It reaches 2 position. Further, when the support member passes the first position when closing the first housing and the second housing, the suction mechanism automatically rotates to reach the closed position, and the first housing and the second housing are It is kept closed. Accordingly, there is a region where the first housing (supporting member) automatically rotates during the opening / closing operation, and an unlocking operation for releasing the lock when opening is unnecessary, so that the opening / closing operation can be performed with good operability. Yes.

  As described above, according to the hinge device and the portable device according to the present invention, when the first casing and the second casing are opened, there is a region in which the support member is automatically rotated by the hop-up mechanism, and the first Since there is a region where the support member automatically rotates by the suction mechanism when the first housing and the second housing are closed, and the first housing and the second housing are held closed by the suction mechanism. It can be opened and closed with good operability.

  Hereinafter, an example of a hinge device and a portable device according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram showing an example of a portable device provided with a hinge device according to the present invention. 2-8 is a figure which shows an example of the hinge apparatus based on this invention. As shown in FIG. 1, the hinge device according to the present invention rotates the first housing 11 and the second housing 12 relative to each other about the hinge shaft 2, so that the first housing 11 and the first housing 11 are rotated. A closed state in which the two housings 12 are overlapped with each other and an open state in which the first housing 11 and the second housing 12 are opened are formed. In other words, the hinge device 1 according to the present invention connects the first housing 11 and the second housing 12 so as to be rotatable about the hinge shaft 2. As shown in FIGS. 3 and 4, the hinge device 1 according to the present invention is a pair, and the first housing 11 and the second housing 12 are rotatably connected. Since they are substantially the same, only one hinge device 1 on the left side, for example, will be described, and description on the other hinge device 1 ′, for example, the right side, will be omitted. In the present invention, the open state and the open position refer to a state in which the first housing 11 and the second housing 12 are not opened any more, for example, when the rotation angle is 180 °.

  The device to which the hinge device according to the present invention is applied is not particularly limited. For example, the device is an OA device such as a portable device 10 or a copying machine, and the portable device 10 is preferable. The portable device 10 according to the present invention is not particularly limited, and examples thereof include a notebook personal computer, a PDA, a pocket personal computer, a Zaurus (trademark), a mobile phone, a calculator, and a portable game machine. In the present invention, the portable device includes an ashtray, a case lid, and the like. That is, it is not particularly limited as long as the two casings are rotated with respect to each other. However, for example, a notebook personal computer or the like is preferable, and in the present embodiment, the portable device will be described without particular limitation.

  The first housing 11 has, for example, a keyboard (not shown) on the upper surface. The 1st housing | casing 11 is formed in the substantially rectangular shape, for example. A pair of attachment members 3 of the hinge device 1 according to the present invention are detachably attached, for example, by screws or screws, in the vicinity of two corners on the rear side of the upper surface of the first housing 11. The second housing 12 has, for example, a display (not shown) such as an LCD on one surface (sometimes referred to as a first surface). The second housing 12 is formed in, for example, a substantially rectangular shape that can be superimposed on the first housing 11. A pair of support members 4 of the hinge device 1 according to the present invention are detachably attached, for example, with screws or screws, in the vicinity of two corners on the rear side of the first surface of the second housing 12.

  As shown in FIGS. 2 to 8, the hinge device 1 according to the present invention is attached to one of the first housing 11 and the second housing 12, for example, the first housing 11, and is hinged. The hinge member 2 is attached to the attachment member 3 that rotatably supports the shaft 2 and one of the first housing 11 and the second housing 12, for example, the second housing 12. The first housing 11 and the second housing 12 rotate with respect to the attachment member 3 from the closed position where the first housing 11 and the second housing 12 are overlapped with each other to the open position where the first housing 11 and the second housing 12 are opened. A support member 4 to be obtained, a suction mechanism 5 for biasing the support member 4 in the closing direction from the closed position to a first position between the closed position and the open position; Mounting part for supporting member 4 between 1 position and 2nd position between 1st position and open position When the hop-up mechanism 6 that urges 3 in the opening direction and the support member 4 are positioned forward of the mounting member 3 with respect to the mounting member 3 from the second position, the second housing 12 is at that position. A feature is that a friction mechanism 7 that generates friction between the hinge shaft 2 and the attachment member 3 is provided so as to stop.

  As shown in FIGS. 2 to 9, the attachment member 3 includes, for example, a substantially rectangular bottom portion 31, and both side portions 32 a extending in a direction orthogonal to the bottom portion 31 and having an upper portion formed in a semicircular shape. 32b, a substantially rectangular rear portion 33 extending in a direction orthogonal to the bottom portion 31 and both side portions 32a and 32b, and front end portions of both side portions 32a and 32b are bent to opposite sides. The pair of guide portions 34 are formed.

  The two side portions 32a and 32b are each provided with two mounting holes 32c each having a thread groove on the inner surface. The housing attachment member 13 is attached to one side portion of the both side portions 32a and 32b (sometimes referred to as the first side portion 32a) by, for example, a screw, and the attachment member 3 is attached via the housing attachment member 13. It is attached to the first housing 11. A shaft hole 35 through which the hinge shaft 2 is inserted is provided in the upper part of the first side portion 32a. A cam attachment hole 36 to which the cam A body 71 is attached is provided in the upper part of the other side portion (second side portion 32b). The cam mounting hole 36 is formed in a substantially rectangular shape in which the central portion of the lower side protrudes downward in a semicircular shape.

  As shown in FIGS. 2 to 8 and 10, the hinge shaft 2 is longer than between the side portions 32 a and 32 b of the mounting member 3, for example, with a size about 1.5 times between the side portions 32 a and 32 b. Has been. The hinge shaft 2 is linearly cut out in parallel to each other at two opposing circular surfaces having a diameter larger than the diameter of the shaft hole 35 and shorter than the length of the short side of the cam mounting hole 36. It is formed in a substantially oval shape. A portion having a dimension slightly longer than one end portion (sometimes referred to as a first end portion) of the hinge shaft 2 and between both side portions of the mounting member 3 has a diameter larger than that of the hinge shaft 2 and a short side of the cam mounting hole. A ring portion 21 having a diameter shorter than the length is provided. The ring portion 21 is rotatably attached to the second side portion 32b of the attachment member 3 via the cam A body 71.

  The vicinity of the first end portion side from the ring portion 21 of the hinge shaft 2 is formed as a first bracket mounting portion 22 in a step shape having a slightly larger size than the hinge shaft 2. The location in the vicinity of the first end portion of the hinge shaft 2 and the location in the vicinity of the inside of the first side portion 32 a of the attachment member 3 when the hinge shaft 2 is attached to the attachment member 3 is slightly smaller than the hinge shaft 2. And is formed as a second bracket mounting portion 23. The first end portion of the hinge shaft 2 (the tip portion from the second bracket mounting portion 23) is formed with a diameter slightly shorter than the diameter of the shaft hole 35 of the first side portion 32a of the mounting member 3. The hinge shaft 2 is rotatably attached by inserting the end portion into the shaft hole 35. A mounting groove 24 extending in the circumferential direction is provided at a location protruding from the shaft hole 35 when the hinge shaft 2 is mounted on the mounting member 3 on the outer periphery of the first end portion of the hinge shaft 2.

  The support member 4 includes, for example, a substantially L-shaped housing attachment portion 41 attached to the second housing 12 by screws, screws, and the like, and a shaft attachment portion 42 to which the hinge shaft 2 is attached. The shaft attachment portion 42 is formed in a substantially U shape, and both side portions 42 a and 42 b are positioned between the both side portions 32 a and 32 b of the attachment member 3. The length between both side portions 42 a and 42 b of the shaft mounting portion 42 is formed with a dimension slightly shorter than the length between both side portions 32 a and 32 b of the mounting member 3, for example. Of the both side portions 42a and 42b of the shaft mounting portion 42, in the vicinity of the tip portion of the side portion close to the second side portion 32b of the mounting member 3 (sometimes referred to as the first side portion 42a), A first shaft insertion hole 43 is provided to be inserted in a state where the one bracket mounting portion 22 is fitted. A second shaft insertion hole 44 to be inserted in a state where the second bracket mounting portion 23 is fitted is provided in the vicinity of the distal end portion of the remaining side portion (sometimes referred to as the second side portion 42b). .

  The hinge shaft 2 is the second side portion 32b of the mounting member 3 (substantially the through hole 71a of the cam A body 71), the washer 45, the first shaft insertion hole 43 of the first side portion 42a of the support member 4, and the support member. 4 is inserted into the second shaft insertion hole 44 of the second side portion 42 b, the washer 46, and the shaft hole 35 of the first side portion 32 a of the mounting member 3, and the hinge shaft 2 protruding from the shaft hole 35 of the mounting member 3 By attaching the E-ring 26 to the attachment groove 24 via the washer 25, the hinge shaft 2 is rotatably attached to the attachment member 3 without coming out of the shaft hole 35. At this time, the first bracket mounting portion 22 of the hinge shaft 2 is inserted in a state of being fitted into the first shaft insertion hole 43 of the support member 4, and the second bracket mounting portion 23 of the hinge shaft 2 is supported by the support member. 4, the support member 4 is pivotally attached to the attachment member 3 together with the hinge shaft 2, that is, the support member 4 is hinged shaft 2. Is attached to the attachment member 3 so as to be rotatable about the axis.

  As a result, the attachment member 3 is attached to the first housing 11 and the support member 4 is attached to the second housing 12, whereby the first housing 11 and the second housing 12 are overlapped with each other. The second housing 12 is rotated from the state (see FIGS. 1 and 5) to the open state (see FIGS. 1 and 8) in which the second housing 12 is rotated, for example, 180 ° about the hinge shaft 2 with respect to the first housing 11. In addition, it can be turned from the open state to the closed state. In the present invention, the rotation angle is an angle of the second housing 12 with respect to the first housing 11. The rotation angle of 0 ° is a closed state in which the first housing 11 and the second housing 12 are overlapped with each other, and the rotation angle of 180 ° is the first housing 11. And the second housing 12 is in an open state in which the second housing 12 is opened substantially linearly. Moreover, when the 1st housing | casing 11 and the 2nd housing | casing 12 are connected by the hinge apparatus 1 which concerns on this invention, it can rotate in the range whose rotation angle is 0 degree-180 degrees, for example. It is configured. In the present invention, 0 ° includes about 0 °, and in the present invention, 180 ° includes about 180 °.

  The suction mechanism 5 biases the support member 4 in the closing direction with respect to the mounting member 3 from the closed position to the first position between the closed position and the open position. The hop-up mechanism 6 biases the support member 4 in the opening direction with respect to the mounting member 3 from the first position to the second position between the first position and the opening position. The suction mechanism 5 and the hop-up mechanism 6 may be provided separately, but are preferably provided integrally. For example, the suction mechanism 5 and the hop-up mechanism 6 move to the cam body 51 that rotates together with the hinge shaft 2 and the attachment member 3. A movable body that is provided in contact with the cam body 51, an urging member 53 that urges the movable body to press the cam body 51, and a protrusion that protrudes from the peripheral surface of the cam body 51, and is in the first position. It is preferable that a cam projection 54 whose tip is in contact with the moving body is provided.

  The cam body 51 is attached to the outer periphery of the hinge shaft 2 between both side portions 42a and 42b of the support member 4 around its axis. The cam body 51 is formed in a cylindrical shape. The length of the cam body 51 in the axial direction is, for example, a dimension slightly shorter than the length between the side portions 42a and 42b of the support member 4. The inner circumferential surface of the cam body 51 is formed in a substantially oval shape in which two circumferentially opposed circumferential surfaces are linearly cut out parallel to each other so as to be inserted in a state where the hinge shaft 2 is fitted. The cam body 51 is attached to the hinge shaft 2 so that it can rotate together with the hinge shaft 2.

  The moving body is movably provided on the attachment member 3 and is, for example, a slider member 52. For example, the slider member 52 is formed in a substantially rectangular parallelepiped shape whose thickness (height) is shorter than the vertical and horizontal dimensions and whose horizontal rectangle is slightly smaller than the rectangle in the mounting member 3. The member 3 is accommodated so as to be movable in the vertical direction. That is, the slider member 52 is provided so as to be movable between the bottom 31 in the attachment member 3 and the hinge shaft 2. A semicircular contact portion 55 extending in the width direction is provided at a substantially central portion of the upper surface of the slider member 52 in the vertical direction, and the contact portion 55 comes into contact with the cam body. . On the lower surface of the slider member 52, for example, three biasing member receiving recesses that are recessed in a circular shape are provided in the width direction.

  The biasing member 53 presses the slider member 52 against the cam body 51. The urging member 53 is not particularly limited, and is preferably a compression spring 56 or the like, for example. The number of compression springs 56 is not particularly limited, but is, for example, three. These compression springs have one end in contact with the bottom 31 of the mounting member 3 and the other end in contact with the urging member accommodating recess 52a of the slider member 52. The contact portion 55 of the slider member 52 is always the cam body 51. It is urged to be pressed against.

  On the peripheral surface of the cam body 51, a cam convex portion 54 extending in the axial direction is projected. The distal end portion of the cam convex portion 54 is formed in a curved shape. When the support member 4 is positioned at the first position, the cam convex portion 54 is in contact with the distal end portion of the contact portion 55 of the slider member 52 when the support member 4 is in the first position. When the slider is located at the closed position from the first position, the contact portion 55 of the slider member 52 contacts one slope of the cam convex portion 54 so that the support member 4 is in the closing direction with respect to the mounting member 3. The suction mechanism 5 is configured to be biased.

  Further, when the support member 4 is positioned between the first position and the second position, the contact portion 55 of the slider member 52 contacts the other inclined surface of the cam protrusion 54. The hop-up mechanism 6 is configured such that the support member 4 is urged in the opening direction with respect to the attachment member 3 and the support member 4 is positioned at the second position.

  Although a 1st position is not specifically limited, For example, a rotation angle is 15 degrees (refer FIG.1 and FIG.6). Although a 2nd position is not specifically limited, For example, a rotation angle is 45 degrees (refer FIG.1 and FIG.7). When the rotation angle is less than 15 °, the first housing 11 and the second housing 12 are urged in the overlapping direction, and when the rotation angle exceeds 15 ° and less than 45 °, the rotation angle becomes 45 °, for example. The second housing 12 is urged to rotate with respect to the one housing 11. In other words, the state where the rotation angle, which is the first position, is 15 ° is a neutral state intermediate between the suction mechanism 5 and the hop-up mechanism 6, and the support member 4 moves relative to the mounting member 3 from either of the neutral states. The support member 4 is automatically rotated so as to be in the closed state or the third position. In the present invention, 15 ° includes about 15 °, and 45 ° in the present invention includes about 45 °.

  The friction mechanism 7 includes the hinge shaft 2 and the attachment member 3 so that when the support member 4 is positioned forward of the opening direction with respect to the attachment member 3, the second housing 12 stops at that position. Friction between the two. The friction mechanism 7 is not particularly limited. For example, the friction mechanism 7 is attached to the attachment member 3 and is rotated together with the cam A body 71 through which the hinge shaft 2 passes, and the hinge shaft 2, and is movable in the axial direction of the hinge shaft 2. A cam B body 72 that is in surface contact with the cam A body 71, friction urging means 73 that urges the cam B body 72 to be pressed against the cam A body 71, and a cam provided on the contact surface 71b of the cam A body 71 The A convex portion 74 and the contact surface 72b of the cam B body 72 are provided on the contact surface 72b of the cam B body 72. It is preferable to provide a cam B convex portion 75 in which the front end surfaces come into surface contact and generate friction between the hinge shaft 2 and the mounting member 3.

  The cam A body 71 is formed in a disk shape, for example, as shown in FIGS. A circular through hole 71a through which the hinge shaft 2 passes coaxially is provided at the center of the cam A body. A substantially rectangular cam mounting portion 76 that fits into the cam mounting hole 36 projects from a surface (also referred to as a second surface) opposite to the contact surface 71 b of the cam A body 71. Further, the cam mounting portion 76 of the cam A body 71 is provided with a circular ring fitting recess 77 on which the ring portion 21 of the hinge shaft 2 is fitted coaxially, and this cam mounting portion 76 is the mounting member 3. The cam A body 71 is attached to the attachment member 3 by being fitted into the cam attachment hole 36.

  As shown in FIGS. 2 to 8 and 12, for example, the cam B body 72 is formed in a disk shape having substantially the same diameter as the cam A body 71. A circular through-fitting hole 72 a through which the hinge shaft 2 passes coaxially is provided at the center of the cam B body 72. The through-fitting hole 72a is formed in a substantially oval shape in which two circumferentially opposed circumferential surfaces are linearly cut out in parallel with each other so as to be inserted in a state in which the hinge shaft 2 is fitted. The cam B body 72 is attached to the hinge shaft 2 so as to be able to rotate together with the hinge shaft 2 and to move on the same axis as the hinge shaft 2.

  The friction biasing means 73 biases the cam B body 72 to press it against the cam A body 71. The friction urging means 73 is not particularly limited and is, for example, a ring-shaped leaf spring 78 or the like. The number of leaf springs 78 is not particularly limited, and is preferably, for example, four. These leaf springs 78 are provided around the axis of the hinge shaft 2 so as to contact the second surface of the cam B body 72 opposite to the contact surface 72b with which the cam A body 71 contacts. A washer 79 is provided on the hinge shaft 2 on the surface opposite to the cam B body 72 of the plate spring 78, that is, on the second end of the hinge shaft 2. The leaf spring 78 is attached to the hinge shaft 2 by caulking the second end portion of the hinge shaft 2 protruding from the washer 79.

  The contact surface 71b of the cam A body 71 and the contact surface 72b of the cam B body 72 have, for example, the friction between the hinge shaft 2 and the mounting member 3 when the rotation angle is in the range of 45 ° to 180 °. The cam A convex part 74 and the cam B convex part 75 which generate | occur | produce and make it a free stop state are provided. The cam A convex portion 74 and the cam B convex portion 75 are formed so as to protrude from the contact surface 71b of the cam A body 71 and the contact surface 72b of the cam B body 72, respectively, and the rotation angle is 45 ° to 45 °. In the range of 180 °, the tip surface of the cam A convex portion 74 and the tip surface of the cam B convex portion 75 are in surface contact with each other, and friction is generated between the hinge shaft 2 and the mounting member 3. It has become.

  As shown in FIG. 11, the cam A convex portion 74 has two first cam A convex portions formed on the contact surface 71 b of the cam A body 71 in an arc shape around the hinge shaft 2 (through hole 71 a). It is preferable that it consists of 74a and the 2nd cam A convex part 74b. The first cam A convex portion 74a and the second cam A convex portion 74b have arc shapes with different diameters, have a flat tip surface, and are formed with substantially the same height. It is formed at a position facing (through hole 71a) as a center. The diameter of the first cam A convex portion 74a is, for example, smaller than the diameter of the second cam A convex portion 74b. It is preferable that both ends in the arc direction of the first cam A convex portion 74a and both ends in the arc direction of the second cam A convex portion 74b are formed to be inclined.

  As shown in FIG. 12, the cam B convex portion 75 has two first cams B formed on the distal end surface of the cam B convex portion 75 in an arc shape with the hinge shaft 2 (through fitting hole 72a) as the center. It is preferable to consist of the convex part 75a and the 2nd cam B convex part 75b. The first cam B convex portion 75a and the second cam B convex portion 75b are arcs having different diameters, the tip end surfaces thereof are planar, and are formed to have substantially the same height. It is formed at a position facing the (through fitting hole 72a) as a center. The diameter of the first cam B convex portion 75a is, for example, a dimension smaller than the diameter of the second cam B convex portion 75b and is substantially the same as the diameter of the first cam A convex portion 74a. The diameter of the second cam B convex portion 75b is substantially the same as the diameter of the second cam A convex portion 74b. It is preferable that both ends in the arc direction of the first cam B convex portion 75a and both ends in the arc direction of the second cam B convex portion 75b are formed to be inclined.

  Thus, when the rotation angle is in the range of 45 ° to 180 °, the tip surface of the first cam A convex portion 74a and the tip surface of the first cam B convex portion 75a are in surface contact with each other, and the second cam A convex portion The tip surface of the portion 74b and the tip surface of the second cam B convex portion 75b are in surface contact with each other and between the hinge shaft 2 and the mounting member 3, that is, between the first housing 11 and the second housing 12. Friction that can achieve a free stop state is generated. When the rotation angle is in the range of 0 ° to 45 °, the front end surface of the first cam A convex portion 74a and the front end surface of the second cam A convex portion 74b are contact surfaces 72b of the cam B body 72 (first surface). The surface of the first cam B convex portion 75a and the front surface of the second cam B convex portion 75b are in contact with the cam B convex portion 75a and the second cam B convex portion 75b. The body 71 is in surface contact with the contact surface 71b (a surface other than the first cam A convex portion 74a and the second cam A convex portion 74b), and at this time, a free stop is provided between the hinge shaft 2 and the mounting member 3. It is configured not to generate friction that can be in a state.

  Next, the operation of the hinge device 1 and the portable device 10 according to the present invention will be described.

  In a normal state where the mobile device 10 is not used, the first housing 11 and the second housing 12 are in a closed state where they overlap each other. At this time, as shown in FIG. 5, the contact portion 55 of the slider member 52 comes into contact with one inclined surface of the cam convex portion 54, and the support member 4 is attached to the mounting member 3 by the compression spring 56 in the closing direction. Therefore, the first casing 11 and the second casing 12 are held in a closed state where they overlap each other. As described above, the first casing 11 and the second casing 12 are held in the closed state, thereby eliminating the need for a latch mechanism for locking the first casing 11 and the second casing 12 in the closed state. can do. As a result, the unlocking operation for unlocking the first housing 11 and the second housing 12 is not required.

  When using the portable device 10, for example, a force is applied to the second housing 12 such that the second housing 12 rotates about the hinge shaft 2 with respect to the first housing 11. When the rotation angle is 0 ° to less than 15 °, this force moves the second housing 12 to the first housing so that the slider member 52 can be moved into the mounting member 3 against the urging force of the compression spring 56. 11 to rotate. As shown in FIG. 6, when the rotation angle becomes 15 ° and exceeds 15 °, the contact portion 55 of the slider member 52 slides from the one inclined surface of the cam convex portion 54 to the other inclined surface. Therefore, the second housing 12 is automatically rotated by the urging force of the compression spring 56 until the rotation angle becomes 45 ° with respect to the first housing 11.

  Then, as shown in FIG. 7, the second casing 12 having a rotation angle of 45 ° is forced against the second casing 12 so that the second casing 12 is further rotated around the hinge shaft 2 with respect to the first casing 11. Act. Then, the first cam A convex portion 74a and the first cam B convex portion 75a ride on each other against the urging force of the leaf spring 78, and the front end surface of the first cam A convex portion 74a and the first cam B convex portion 75a. The second cam A convex portion 74b and the second cam B convex portion 75b ride on each other and the front end surface of the second cam A convex portion 74b and the second cam B The tip 75b of the convex portion 75b slides while being in surface contact with each other. This state is performed in the range from the rotation angle exceeding 45 ° to 180 °.

  If the rotation of the second housing 12 is stopped by the urging force of the leaf spring 78 in this surface contact state, the tip surface of the first cam A convex portion 74a and the tip surface of the first cam B convex portion 75a Friction due to surface contact and surface contact between the distal end surface of the second cam A convex portion 74b and the distal end surface of the second cam B convex portion 75b is generated, so that the second housing 12 is stopped and held at that position. The As a result, the display provided on the second housing 12 and the keyboard provided on the upper surface of the first housing 11 are exposed, so that the keyboard can be operated while viewing the display. When the angle of the display (second housing 12) is to be adjusted within the range of 45 ° to 180 °, the second housing 12 is rotated with respect to the first housing 11 to obtain a desired angle. When stopped at the position, the display is stopped and held at that position, so that the angle of the display can be easily adjusted to a desired angle.

  To return to the closed state after use, the second casing 12 is rotated in the closing direction with respect to the first casing 11. At this time, the front end surface of the first cam A convex portion 74a and the front end surface of the first cam B convex portion 75a slide while being in surface contact with each other, and the second cam A convex portion 74b and the second cam B convex portion. When the rotation angle becomes 45 °, the first cam A convex portion 74a and the first cam B convex portion 75a are engaged, and the second cam A convex portion 74b and the second cam A convex portion 74b The engagement with the two cam B convex portions 75b is released. When the rotation angle is 45 ° to 15 °, the second housing 12 is rotated against the urging force of the compression spring 56. When the rotation angle becomes smaller than 15 °, the contact portion 55 of the slider member 52 reaches the one inclined surface after sliding the tip from the other inclined surface of the cam convex portion 54. Therefore, the biasing force of the compression spring 56 The second casing 12 is automatically rotated with respect to the first casing 11 until the rotation angle is 0 °, that is, in the closed state, so that the first casing 11 and the second casing 12 overlap each other. Held closed.

  Therefore, the hinge device 1 and the portable device 10 according to the present invention have a region where the first housing 11 automatically rotates during the opening / closing operation, and does not require an unlocking operation for releasing the lock when opening. Therefore, the opening / closing operation can be performed with good operability.

  The suction mechanism 5 and the hop-up mechanism 6, particularly the hop-up mechanism 6, include a slider member 52 that reciprocates in a linear direction and a compression spring 56 that is a biasing member 53 that biases the slider member 52. Thus, since the urging direction of the slider member 52 is a linear direction, the second housing 12 is sufficiently rotated automatically by the hop-up mechanism 6 even in the relatively heavy second housing 12 such as a laptop computer. be able to. Further, the suction mechanism 5, the hop-up mechanism 6 and the friction mechanism 7 are configured by using the cam body 51, the slider member 52, the compression spring 56, the cam A body 71, the cam B body 72, the leaf spring 78, and the like. With a simple structure, the number of parts can be reduced, and cost reduction and downsizing can be achieved.

  As described above, the hinge device and the portable device according to the present invention have a region in which the support member is automatically rotated by the hop-up mechanism when the first housing and the second housing are opened. When the body and the second housing are closed, there is a region where the support member automatically rotates by the suction mechanism, and the first housing and the second housing are held in the closed state by the suction mechanism. Since it can be opened and closed with good performance, it is particularly suitable for use in notebook computers.

It is a schematic side view which shows an example of the portable apparatus which concerns on this invention. It is a disassembled perspective view which shows an example of the hinge apparatus which concerns on this invention. It is a figure which shows an example of the left side of a pair of hinge apparatus which concerns on this invention, (a) is a perspective view, (b) is a left view, (c) is a front view, (d) is a right view. It is a figure which shows an example of the right side of a pair of hinge apparatus which concerns on this invention, (a) is a perspective view, (b) is a left view, (c) is a front view, (d) is a right view. It is a figure in case a rotation angle is 0 degree which shows an example of the hinge apparatus which concerns on this invention, (a) is a front view, (b) is an AA arrow directional cross-sectional view in (a). It is a figure in case a rotation angle is 15 degrees which shows an example of the hinge apparatus which concerns on this invention, (a) is a front view, (b) is a BB arrow directional cross-sectional view in (a). It is a figure in case a rotation angle is 45 degrees which shows an example of the hinge apparatus which concerns on this invention, (a) is a front view, (b) is CC sectional view taken on the line in (a). It is a figure when a rotation angle is 180 degrees which shows an example of the hinge apparatus which concerns on this invention, (a) is a front view, (b) is a DD sectional view taken on the line in (a). It is a perspective view which shows an example of the attachment member which concerns on this invention. It is a figure which shows an example of the hinge shaft which concerns on this invention, (a) is a perspective view, (b) is a top view, (c) is a side view, (d) is a rear view. It is a figure which shows an example of the cam A body which concerns on this invention, (a) is a perspective view, (b) is a top view, (c) is a bottom view, (d) is a side view. It is a figure which shows an example of the cam B body which concerns on this invention, (a) is a perspective view, (b) is a top view, (c) is a bottom view, (d) is a side view.

DESCRIPTION OF SYMBOLS 1 Hinge apparatus 2 Hinge shaft 3 Mounting member 4 Support member 5 Suction mechanism 6 Hop-up mechanism 7 Friction mechanism 10 Portable apparatus 11 1st housing | casing 12 2nd housing | casing 51 Cam body 52 Slider member (moving body)
53 Biasing member 54 Cam convex part 55 Abutting part 56 Compression spring 71 Cam A body 72 Cam B body 73 Friction biasing means 74 Cam A convex part 75 Cam B convex part 78 Leaf spring

Claims (7)

A closed state in which the first housing and the second housing are rotated relative to each other about a hinge shaft, and the first housing and the second housing are overlapped with each other; and the first housing And a hinge device configured to form an open state in which the second housing is opened,
An attachment member attached to one of the first housing and the second housing, and rotatably supporting the hinge shaft;
The hinge shaft is attached to the other housing of the first housing and the second housing, and the first housing and the second housing are overlapped with each other from the closed position. A support member capable of rotating with respect to the attachment member between the first housing and the open position where the second housing is opened;
A cylindrical cam body that rotates together with the hinge shaft, a moving body that is movable in the vertical direction into the mounting member, and that contacts the cam body, and urges the moving body to be pressed against the cam body. An urging member and a cam protrusion projecting on the peripheral surface of the cam body, from a first position of a predetermined closing angle of the second casing to the first casing to the closed position A suction mechanism that urges the support member in the closing direction with respect to the mounting member by contacting the movable body with one inclined surface of the cam convex portion between ,
Between the first position of the second casing with respect to the first casing and a second position having a predetermined opening angle, the movable body comes into contact with the other inclined surface of the cam projection, and the support member is A hop-up mechanism that urges the mounting member in the opening direction;
When the support member is located in front of the second position with respect to the mounting member, the friction between the hinge shaft and the mounting member is such that the second housing stops at that position. A friction mechanism that generates
A hinge device comprising:   When the rotation range of the support member relative to the attachment member is 180 °, and the rotation angle of the support member relative to the attachment member is 0 ° in the closed position, the rotation position of the support member in the first position is The rotation angle of the support member with respect to the attachment member is 15 °, and the rotation angle of the support member with respect to the attachment member at the second position is 45 °. Hinge device. The movable body is a slider member provided in the mounting member so as to be reciprocally movable in the vertical direction, and the biasing member presses the slider member against the cam body by a biasing force. The hinge device according to claim 1 , wherein the hinge device is a compression spring. The friction mechanism is attached to the attachment member and the cam A body through which the hinge shaft passes, and the cam that rotates together with the hinge shaft and is movable in the axial direction of the hinge shaft and is in surface contact with the cam A body. B body, friction biasing means for biasing the cam B body against the cam A body, a cam A convex portion provided on the contact surface of the cam A body, and a contact surface of the cam B body Provided, when the support member is positioned in front of the mounting member in the opening direction with respect to the mounting member, the cam A convex portion and the tip surfaces thereof are in surface contact with each other, and the hinge shaft and the and having a cam B protrusions for generating the friction between the mounting member, hinge device according to any one of claims 1-3. Wherein formed on the cam A member and the cam B member each disc-shaped, wherein said friction biasing means is one or more annular leaf spring, according to claim 4 Hinge device. The cam A convex portion has a first cam A convex portion formed in an arc shape centering on the hinge shaft, and an arc shape centering on the hinge shaft with a diameter different from that of the first cam A convex portion. And the first cam A convex portion and the second cam A convex portion formed at a position facing the hinge shaft as a center,
The cam B convex portion has a first cam B convex portion formed in an arc shape centering on the hinge shaft, and an arc shape centering on the hinge shaft with a diameter different from that of the first cam B convex portion. and characterized by comprising a second cam B convex portions are formed in opposite positions around the hinge shaft and the first cam B protrusion, a hinge device according to claim 1. The portable apparatus provided with the hinge apparatus of any one of the said Claims 1-6 .

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