JP3157566U - Tilt mechanism - Google Patents

Abstract

A tilt mechanism having a simple structure for use in an electronic device or the like that can hold a movable base in a tilted state with respect to a fixed base. A fixed base 12, a movable base 14 disposed on the fixed base 12, and a movable base 14 with respect to the fixed base 12 by rotating around a fixed first end 32. And a driven arm that determines the moving posture of the moving base 14 by rotating around the fixed second end 36 when the moving base 14 is moved. It has an arm 18 and a hinge mechanism having a semi-automatic function, and when the moving base 14 moves to the open position, the abutting side end 31 of the moving base 14 comes into contact with the upper surface 24 of the fixed base 12. At the same time, the movable base 14 is held by the main arm 16 and the follower arm 18 in an inclined state with respect to the fixed base 12. [Selection] Figure 4

Description

  The present invention relates to a tilt mechanism that holds a movable base in a tilted state on a fixed base, and a mobile phone, electronic dictionary, and portable game machine incorporating the tilt mechanism.

  For example, a mobile phone having a configuration in which a second housing (movable base) in which a liquid crystal display device or the like is disposed is slidable with respect to a first housing (fixed base) in which a numeric keypad or the like is disposed. Is provided (Patent Document 1). This type of mobile phone can be improved in portability by sliding so that the first housing and the second housing are completely overlapped with each other, and the first housing can be used during a call or numeric keypad operation. The operability is improved by exposing the numeric keypad by sliding the second housing in which the liquid crystal display device or the like is disposed with respect to the body.

  By the way, in recent years, mobile phones have become more multifunctional, and those that receive terrestrial digital broadcasts and display them on liquid crystal display devices have come to be provided. In this type of mobile phone, since the liquid crystal display device is viewed for a long time, the second housing in which the liquid crystal display device or the like is disposed is tilted with respect to the first housing. Therefore, it is desired to improve the visibility of the liquid crystal display device.

  2. Description of the Related Art Conventionally, as a tilt mechanism for tilting a second housing in which a liquid crystal display device or the like is disposed with respect to a first housing, a lift hinge that is driven in conjunction with a slide hinge is provided. A mechanism is known in which a second casing is slid with respect to the casing, and the second casing is tilted with respect to the first casing by a lift hinge (Patent Document 2). Also, a tilt mechanism has been proposed in which only the liquid crystal display device is tilted with respect to the second housing when the second housing slides relative to the first housing by the slide mechanism (Patent Document 3). ).

JP 2008-148271 A JP 2007-132508 A Japanese Patent Laid-Open No. 2007-180853

  However, in the tilt mechanism disclosed in Patent Documents 2 and 3, the slide mechanism that slides the second housing relative to the first housing and the second housing tilted relative to the first housing A tilt mechanism for tilting or a tilt mechanism for tilting the liquid crystal display device with respect to the second casing is necessary, which increases the number of components and increases the size of the mechanism.

  The present invention has been made in view of the above points, a tilt mechanism capable of holding the movable base in a tilted state with respect to the fixed base with a simple configuration, and a mobile phone incorporating the tilt mechanism, An object is to provide an electronic dictionary and a portable game machine.

From the first point of view, the above problem is
A fixed base;
A movable base disposed on the fixed base;
A fixed-side first end rotatably connected to the fixed base; and a fixed-side first other end rotatably connected to the movable base, the fixed-side first end being A main arm that moves the movable base between a closed position and an open position with respect to the fixed base by rotating as a center;
A fixed-side second end rotatably connected to the fixed base; and a moving-side second other end rotatably connected to the movable base, and the fixed base When moving the moving base, a driven arm that determines the moving posture of the moving base by rotating about the fixed-side first end;
The shaft to which the main drive arm is connected, and when the main drive arm is urged to rotate, the shaft is urged to rotate in the return direction to a predetermined neutral position, and the shaft is rotated to a position past the neutral position. And a hinge mechanism that urges the shaft to rotate in a direction opposite to the return direction,
The main drive arms are disposed at both ends of the shaft, and the pair of main drive arms are configured to rotate in synchronization with the shaft,
When the moving base moves to the open position, the main base arm and the driven arm hold the mobile base in a tilted state with respect to the fixed base. Can be solved.

  According to the disclosed tilt mechanism, the movable base can be held in a tilted state with respect to the fixed base at the open position with a simple mechanism.

FIG. 1 shows a tilt mechanism according to a first embodiment of the present invention, and is a perspective view showing a state in which a movable base is in an open position. FIG. 2 shows the tilt mechanism according to the first embodiment of the present invention, and is a perspective view showing a state where the movable base is in the closed position. FIG. 3 is a schematic side view for explaining the operation of the tilt mechanism according to the first embodiment of the present invention (No. 1). FIG. 4 is a schematic side view for explaining the operation of the tilt mechanism according to the first embodiment of the present invention (No. 2). FIG. 5 is an exploded perspective view of a hinge mechanism provided in the tilt mechanism according to the first embodiment of the present invention. FIG. 6 is a perspective view showing an example in which the tilt mechanism according to the first embodiment of the present invention is applied to an electronic dictionary. FIG. 7 is a perspective view showing an example in which the tilt mechanism according to the first embodiment of the present invention is applied to a portable game machine. FIG. 8 is an enlarged perspective view showing the hinge mechanism of the tilt mechanism according to the second embodiment of the present invention. FIG. 9 is an exploded perspective view showing the hinge mechanism of the tilt mechanism according to the second embodiment of the present invention in an enlarged manner. FIG. 10 is an enlarged perspective view showing the hinge mechanism of the tilt mechanism according to the third embodiment of the present invention. FIG. 11 is an enlarged perspective view showing a main arm used in the third embodiment of the present invention. FIG. 12 shows a main arm used in the third embodiment of the present invention, in which (A) is a plan view and (B) is a sectional view.

  Next, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 are perspective views showing the appearance of the tilt mechanism 10 according to the first embodiment of the present invention, FIGS. 3 and 4 are side views showing the operation of the tilt mechanism 10, and FIG. 5 shows the tilt mechanism. 10 is an exploded perspective view of the hinge mechanism 20 provided in FIG. In the present embodiment, an example in which the tilt mechanism 10 is applied to a mobile phone will be described.

  In general, the tilt mechanism 10 includes a fixed base 12, a movable base 14, a main driving arm 16, a driven arm 18, a hinge mechanism 20, and the like.

  The fixed base 12 serves as a main body of the mobile phone. A keyboard 22 and the like are provided on the upper surface 24 of the fixed base 12. The mobile base 14 serves as a lid portion of the mobile phone. A liquid crystal display device 30 and the like are provided on the upper surface 25 of the movable base 14.

  When a mobile phone is carried, it is necessary to reduce its shape and improve portability. For this reason, the movable base 14 can be opened and closed with respect to the fixed base 12 by the tilt mechanism 10.

  FIG. 1 shows a state in which the movable base 14 is open with respect to the fixed base 12 (hereinafter referred to as an open state), and FIG. 2 shows a state in which the movable base 14 is closed with respect to the fixed base 12 ( Hereinafter, it is referred to as a closed state). In this closed state, the movable base 14 is configured to overlap the fixed base 12, thereby ensuring portability.

  In the open state, the movable base 14 is configured to be tilted (tilted) by a predetermined angle θ on the fixed base 12. Further, in the open state, the end (the side surface serving as the end) of the moving base 14 in the direction of the arrow Y1 in the drawing is in contact with the upper surface 24 of the fixed base 12 (the end is in contact). Called side end 31).

  Thus, the visibility of the liquid crystal display device 30 can be improved by holding the movable base 14 provided with the liquid crystal display device 30 in an inclined state with respect to the fixed base 12. In the following description, the position of the moving base 14 in the open state is referred to as an open position, and the position of the moving base 14 in the closed state is referred to as a closed position.

  In the present embodiment, the main arm 16 has a dock leg shape (hoop shape), and an end portion on the fixed base 12 side (hereinafter referred to as a fixed side first end portion 32) rotates to the fixed base 12. Connected as possible. Specifically, the fixed-side first end portion 32 is connected to both end portions in the X1 and X2 directions of the hinge mechanism 20 provided in the fixed base 12.

  In addition, an end 34 on the moving base 14 side of the main arm 16 (hereinafter referred to as a moving-side first end 34) is rotatably connected to the moving base 14. The main arm 16 rotates around the fixed first end 32 to move the movable base 14 between the closed position and the open position with respect to the fixed base 12.

  However, in the configuration in which the moving base 14 is moved with respect to the fixed base 12 using only the main arm 16, the moving base 14 rotates around the moving-side first end 34, and the moving posture at the time of movement is It becomes unstable. For this reason, a driven arm 18 is provided together with the main drive arm 16 between the fixed base 12 and the movable base 14.

  The driven arm 18 has a fixed second end 36 that is rotatably connected to the fixed base 12 and a movable second end 38 that is rotatably connected to the moving base 14. In the present embodiment, unlike the main drive arm 16, the driven arm 18 is arranged only on one side of each base 12, 14, but like the main drive arm 16, two pieces are sandwiched between the bases 12, 14. It is good also as a structure to provide.

  Thus, by providing the moving base 14 together with the driven arm 18 between the fixed base 12 and the moving base 14, when the moving base 14 is moved relative to the fixed base 12, the moving base 14 is It moves with a fixed movement trajectory with respect to the fixed base 12. That is, when the moving base 14 moves between the closed position and the opened position, the moving posture of the moving base 14 is uniquely determined by the arms 16 and 18.

  Next, the hinge mechanism 20 will be described. FIG. 5 is an exploded perspective view of the hinge mechanism 20. The hinge mechanism 20 generally includes a hinge frame 40, a shaft 41, a compression spring 50, a head cam 51, a drive cam 52, a hinge case 53, and the like.

  The hinge mechanism 20 is a so-called semi-auto hinge. The compression spring 50, the head cam 51, the drive cam 52, and the hinge case 53 constitute a cam type semi-automatic mechanism.

  The hinge frame 40 is attached in the vicinity of one long side of the fixed base 12 so as to extend in the directions of the arrows X1 and X2. The hinge frame 40 has bearing portions 40a and 40b formed at both ends, and the shaft 41 is supported by the bearing portions 40a and 40b.

  At both end portions of the shaft 41, attachment portions 41a and 41b are formed by processing a cylindrical portion partially into a flat shape. When the shaft 41 is attached to the hinge frame 40, the main arm 16 and the parts constituting the semi-automatic mechanism are attached to the attachment portions 41a and 41b of the shaft 41.

  The compression spring 50, the head cam 51, the drive cam 52, and the hinge case 53 constituting the semi-automatic mechanism are attached to the attachment portion 41a. In order to attach the semi-automatic mechanism to the attachment portion 41a, first, the retaining washer 54 and the hinge case 53 are attached to the attachment portion 41a (shaft 41).

  Next, the drive cam 52 that rotates in synchronization with the shaft 41 is mounted on the mounting portion 41 a, and the head cam 51 is mounted on the mounting portion 41 a so as to contact the drive cam 52. Next, the compression spring 50 is attached to the attachment portion 41a so that the drive cam 52 and the head cam 51 are in pressure contact. The compression spring 50, the head cam 51, and the drive cam 52 are housed in a hinge case 53.

  As described above, when each component constituting the semi-automatic mechanism is mounted on the mounting portion 41a, the mounting portion 41a is inserted into the bearing portion 40a. At this time, the bearing portion 40 a abuts against the compression spring 50, and thus each part constituting the semiautomatic mechanism is locked between the bearing portion 40 a and the washer 54. In such a structure, when the shaft 41 rotates, a sliding torque is generated on the contact surface between the fixed cam 52 and the rotating cam 53.

  The contact surface between the drive cam 52 and the head cam 51 is formed with a convex surface and a concave surface that are fitted to each other. When the convex surfaces come into contact with each other, the compression spring 50 causes the contact surface between the rotating cam and the fixed cam. The pressing force is urged to generate a rotational sliding torque.

  The rotational sliding torque acts in a direction to return the shaft 41 to the position before the apex portions of the convex surfaces of the drive cam 52 and the head cam 51 come into contact with each other (this position becomes the neutral position). However, when the apex of the convex surface exceeds the neutral position, the rotational sliding torque acts in the direction in which the shaft 41 is advanced (the direction opposite to the direction in which it is restored).

  When the shaft 41 to which each part of the semi-automatic mechanism is attached is mounted on the hinge frame 40, a part of the attachment part 41a extends in the X1 direction from the bearing part 40a, and a part of the attachment part 41b extends from the bearing part 40b. Extends in the X2 direction. The main drive arm 16 is fixed to the extended portion using a slider 42, a stopper 43, an E retaining ring 44, and the like.

  In this fixed state, the pair of main arms 16 are fixed to the shaft 41, respectively. Therefore, the pair of main driving arms 16 are configured to rotate in synchronization with the shaft 41. As a result, when the moving base 14 moves relative to the fixed base 12 by the main driving arm 16 as described above, the main driving arms 16 rotate synchronously, thereby moving the moving base 14 stably. be able to.

  According to the hinge mechanism 20 having the above-described configuration, when the main driving arm 16 (shaft 41) is urged to rotate by the components constituting the semi-automatic mechanism, the main driving arm 16 is rotated to the neutral position. When the shaft 41 is urged to rotate in a return direction opposite to the urged direction and the main arm 16 (shaft 41) is rotated to a position past the neutral position, the shaft is rotated in a direction opposite to the return direction. 41 is rotationally biased.

  Therefore, when opening the movable base 14 with respect to the fixed base 12, if the opening operation is performed from the closed position to the neutral position, the movable base 14 automatically moves toward the open position thereafter. Conversely, when closing the movable base 14 with respect to the fixed base 12, if the closing operation is performed from the open position to the neutral position, the movable base 14 automatically moves toward the closed position. Thus, by providing the semi-auto hinge type hinge mechanism 20, the operability of the tilt mechanism 10 can be improved.

  Next, the dimensions of the primary arm 16 and the driven arm 18 constituting the tilt mechanism 10 with respect to the fixed base 12 and the movable base 14 will be described. FIG. 3A shows the dimensions of the primary arm 16 and the driven arm 18 with respect to the fixed base 12 and the movable base 14.

  As a reference for each dimension to be described below, an abutting side end 31 in the direction of arrow Y1 in the drawing of the moving base 14 and an end 28 in the direction of arrow Y2 of the fixed base 12 (hereinafter, this end is referred to as a reference end 28). The reference end portion 28 is defined as an end portion on the opposite side to the end portion 26 on the contact side end portion 31 side of the fixed base 12 when the movable base 14 is located at the closed position.

  Here, the distance between the fixed-side first end 32 and the moving-side first end 34 of the main drive arm 16 is defined as W1. Further, the distance between the reference end portion 28 and the fixed first end portion 32 is W2. Further, the distance between the contact-side end portion 31 and the moving-side first end portion 34 is defined as W3.

  On the other hand, the distance between the fixed-side second end 36 and the moving-side second end 38 of the driven arm 18 is L1. The distance between the reference end portion 28 and the fixed second end portion 36 is L2. Furthermore, the distance between the contact-side end portion 31 and the moving-side second end portion 38 is L3. At this time, in the tilt mechanism 10 according to the present embodiment, the distances W1, W2, W3, L1, L2, and L3 are set so as to satisfy the conditions of W1 <W2 + W3 and L1 <L2 + L3.

  If the distances W1, W2, W3, L1, L2, and L3 are set to satisfy W1> W2 + W3 and L1> L2 + L3, the movable base 14 is not tilted on the fixed base 12, and the fixed base The stage 12 and the movement base 14 are moved to a state where they are arranged in a flat manner. However, when the distances W1, W2, W3, L1, L2, and L3 are set as W1 <W2 + W3 and L1 <L2 + L3 as described above, the movable base 14 is tilted on the fixed base 12 (tilt state). Can be securely held.

  Next, a specific operation of the tilt mechanism 10 will be described. 3 and 4 show the movement of the moving base 14 from the closed state to the open state.

  FIG. 3A shows the tilt mechanism 10 in the closed state. In this closed state, the movable base 14 is in a state where it overlaps the upper part of the fixed base 12. The driven arm 18 rotates counterclockwise around the fixed second end 36, and the main arm 16 also rotates counterclockwise around the fixed first end 32. At this time, the main arm 16 is urged to rotate counterclockwise by the elastic urging force of the compression spring 50 of the hinge mechanism 20 described above. Due to this rotational urging force, the movable base 14 is pressed against the fixed base 12 to prevent rattling between the bases 12 and 14.

  When the moving base 14 is moved from the closed state toward the open position, the moving base 14 moves away from the fixed base 12 and sequentially moves toward the open position as shown in FIGS. . At this time, the main arm 16 rotates about the fixed side first end 32 with respect to the fixed base 12, and the driven arm 18 also rotates about the fixed side second end 36 with respect to the fixed base 12. . The main arm 16 rotates about the moving side first end 34 with respect to the moving base 14, and the driven arm 18 also rotates about the moving side second end 38 with respect to the moving base 14.

  At this time, the movable base 14 is supported by two arms, a main driving arm 16 and a driven arm 18. For this reason, the moving posture of the moving base 14 is uniquely determined, and the moving base 14 does not become unstable unlike the configuration in which it is supported by only one arm.

  Further, as the main arm 16 rotates as described above, the shaft 41 constituting the hinge mechanism 20 also rotates. However, when the movable base 14 is in the state shown in FIGS. 3B and 3C, the convex surfaces of the drive cam 52 and the head cam 51 constituting the semi-automatic mechanism do not reach the neutral position. Therefore, when the movement operation is canceled in the state shown in FIGS. 3B and 3C, the fixed base 12 is moved again toward the closed position by the urging force of the compression spring 50.

  FIG. 4A shows a state where the moving base 14 has moved to the neutral position. As described above, the vertex portions of the convex surfaces of the drive cam 52 and the head cam 51 are in contact with each other at the neutral position. Therefore, when the movable base 14 is further operated from the neutral position toward the open position, the rotational sliding torque generated on the contact surface between the drive cam 52 and the head cam 51 is reversed in the direction in which the shaft 41 is advanced. As a result, the main drive arm 16 is urged to rotate clockwise about the fixed-side first end 32.

  Therefore, after the moving base 14 is slightly operated from the neutral position toward the opening position, the moving base 14 automatically moves toward the opening position (see FIG. 4B). Then, the movement of the moving base 14 stops when the abutting side end 31 (specifically, the corner 31a) of the moving base 14 comes into contact with the upper surface 24 of the fixed base 12. As shown to 4 (C), the movement base 14 will be in an open state. The tilt angle θ (tilt angle) of the moving base 14 with respect to the fixed base 12 (upper surface 24) in the open state is the distances W1, W2, W3, L1, L2, L3 and the Y1, The angle can be adjusted by adjusting the length in the Y2 direction or the like.

  In the open state, the main arm 16 is urged to rotate clockwise by the elastic urging force of the compression spring 50 of the hinge mechanism 20. Due to this rotational biasing force, the abutting side end 31 of the moving base 14 is pressed against the fixed base 12, so that the moving base 14 is prevented from rattling on the fixed base 12.

  Note that the operation and operation of moving the movable base 14 from the open state shown in FIG. 4C toward the closed position is opposite to the operation and operation described above with reference to FIGS. Shall be omitted.

  As described above, the tilt mechanism 10 according to the present embodiment holds the moving base 14 in a tilted state with respect to the fixed base 12 in the open position with a simple mechanism, and moves the moving base 14 in the closed position. The base 14 can be held in a state of being superimposed on the fixed base 12. Further, the movement posture between the closed position and the open position of the movable base 14 is uniquely determined by using the two arms 16 and 18. For this reason, the movement base 14 does not fluctuate during the movement, and the collision between the movement base 14 and the fixed base 12 can be prevented.

  FIG. 6 shows an example in which the tilt mechanism according to the first embodiment is applied to an electronic dictionary, and FIG. 7 is a perspective view showing an example in which the tilt mechanism according to the first embodiment is applied to a portable game machine. In each figure, FIGS. 6A and 7A show a closed state, and FIGS. 6B and 7B show an open state. 6 and 7, the same reference numerals are given to the components corresponding to those shown in FIGS. 1 to 5, and the description thereof is omitted.

  In the electronic dictionary 55 shown in FIG. 6, the liquid crystal display device 30 is provided on the upper surface of the movable base 14 serving as a lid. 6B, an input keyboard 56 is provided on the upper surface 24 of the fixed base 12 exposed to the outside.

  In addition, the portable game machine 57 shown in FIG. 7 is provided with the liquid crystal display device 30 on the upper surface of the movable base 14 serving as a lid similarly to the electronic dictionary 55. 7B, operation switches 58 and 59 are disposed on the upper surface 24 of the fixed base 12 exposed to the outside.

  As described above, the tilt mechanism 10 according to the present invention is applied to various apparatuses and devices that hold the movable base 14 in a tilted state with respect to the fixed base 12, such as the electronic dictionary 55 and the portable game machine 57 described above. It is possible.

  Next, tilt mechanisms according to the second and third embodiments of the present invention will be described.

  8 and 9 show a tilt mechanism according to the second embodiment, and FIGS. 10 and 12 show a tilt mechanism according to the third embodiment. The tilt mechanism according to the second and third embodiments is characterized in that a flexible cable is disposed on the main arm.

  Note that the tilt mechanism according to the second and third embodiments is characterized by a hinge mechanism and the other configuration is the same as the tilt mechanism 10 according to the first embodiment, and therefore only the tilt mechanism is shown in FIGS. An enlarged view is shown, and illustration of other components is omitted. 8 to 12, the same reference numerals are given to the components corresponding to those shown in FIGS. 1 to 5, and the description thereof is omitted.

  In the tilt mechanism according to the second embodiment, a main driving arm 62 constituting the hinge mechanism 60 is constituted by an arm main body 63 and an arm lid body 65. As shown in FIG. 9, the arm main body 63 is formed with a cable mounting groove 64 extending from the fixed first end 32 to the moving first end 34. The cable mounting groove 64 has a width corresponding to the width of the flexible cable 61 mounted on the main driving arm 62.

  The flexible cable 61 has an end on the fixed first end 32 side connected to the fixed base 12, and an end on the moving first end 34 side connected to the moving base 14. Therefore, the electronic component installed in the fixed base 12 and the electronic component installed in the moving base 14 are electrically connected by the flexible cable 61.

  In order to arrange the flexible cable 61 in the cable mounting groove 64, the flexible cable 61 is mounted in the cable mounting groove 64, and then the arm lid 65 is fixed by bonding to the cable mounting groove 64. As a result, the flexible cable 61 is placed inside the main drive arm 62. FIG. 8 shows a state where the flexible cable 61 is disposed in the main drive arm 62.

  The means for fixing the cable mounting groove 64 to the arm main body 63 is not limited to adhesion, and other means can be used. Specifically, fixing by screwing, or a structure in which a locking groove is formed in the arm main body 63 and a locking claw that engages and locks the locking groove in the arm lid 65 may be provided.

  When the fixed base 12 and the movable base 14 are separated as in the present embodiment, the electronic components installed in the fixed base 12 and the electronic components installed in the movable base 14 are electrically connected. In order to connect, it is necessary to arrange wiring between the bases 12 and 14. Further, since the moving base 14 moves relative to the fixed base 12, it is desirable to use a flexible cable that is flexible as this wiring.

  However, if a flexible cable is simply provided between the bases 12 and 14, the flexible cable is exposed from the bases 12 and 14, which is not desirable in design. Because it bends, it also leads to a shortened life of the flexible cable.

  On the other hand, in this embodiment, the flexible cable 61 that electrically connects the fixed base 12 and the movable base 14 is disposed in the main arm 62 that constitutes the hinge mechanism 60. For this reason, the flexible cable 61 is not exposed to the outside, so that the design of the tilt mechanism 10 (hinge mechanism 60) can be improved.

  Further, when the moving base 14 rotates with respect to the fixed base 12, the flexible cable 61 moves while being held by the main driving arm 62. For this reason, even if the movable base 14 rotates as described above, the flexible cable 61 is not damaged over time. For this reason, the lifetime of the flexible cable 61 can be extended, and the reliability of the tilt mechanism 10 (hinge mechanism 60) can be improved.

  Next, a tilt mechanism according to the third embodiment will be described.

  FIG. 10 shows the hinge mechanism 70 of the tilt mechanism according to the third embodiment, and FIG. 11 shows the main arm 72 of the hinge mechanism 70 in an enlarged manner. 12A is a plan view of the main driving arm 72, and FIG. 12B is a cross-sectional view taken along the line AA in FIG. 12A.

  In the second embodiment described above, the flexible cable 61 is disposed in the main arm 62, and after mounting the flexible cable 61 in the cable mounting groove 64 of the arm body 63, the arm lid 65 is fixed to the arm body 63, Thus, the flexible cable 61 is arranged in the main arm 62. On the other hand, this embodiment is characterized in that the flexible cable 61 is integrally disposed in the main drive arm 72 (embedded structure).

  The arm main body 73 is made of resin, and the flexible cable 61 is configured to be installed in the resin arm main body 73. Further, the end of the flexible cable 61 connected to the fixed base 12 (the lower side in the figure) extends from the fixed side first end 32 to the outside and is connected to the movable base 14 (in the figure). The upper end portion is configured to extend outward from the moving side first end portion 34.

  As a method of disposing the flexible cable 61 in the arm body 73, a so-called insert molding method is used in which the flexible cable 61 is disposed in a molding die when the arm body 73 is resin-molded. be able to. By using this insert molding method, the flexible cable 61 can be easily and reliably disposed in the arm main body 73.

  Also in the above-described third embodiment, the flexible cable 61 is disposed in the main driving arm 72 constituting the hinge mechanism 70 as in the second embodiment. Therefore, since the flexible cable 61 is not exposed to the outside, the design of the tilt mechanism 10 (hinge mechanism 70) can be improved, and the flexible cable 61 can be prevented from being damaged over time. The service life of 61 can be extended.

  Further, in this embodiment, since the flexible cable 61 is insert-molded in advance in the main arm 72, the number of parts of the hinge mechanism 70 can be reduced and the assembling work can be simplified. In the above-described third embodiment, the configuration example in which the arm main body 73 is formed of resin is shown. However, the arm main body 73 is not limited to resin, but is made of other material (for example, metal) other than resin. It is also possible to configure and arrange the flexible cable 61 therein.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific embodiments described above, and within the scope of the present invention described in the claims of the utility model registration, Various modifications and changes are possible.

DESCRIPTION OF SYMBOLS 10 Tilt mechanism 12 Fixed base 14 Moving base 16, 62, 72 Main arm 18 Subordinate arm 20, 60, 70 Hinge mechanism 28 Reference end 31 Contact side end 32 Fixed side first end 34 Moving side first End 36 Fixed second end 38 Moving second end 40 Hinge frame 41 Shaft 50 Compression spring 51 Head cam 52 Drive cam 53 Hinge case 54 Washer 55 Electronic dictionary 57 Portable game machine 61 Flexible cables 63, 73 Arm body 64 Cable mounting groove 65 Arm lid

Claims (8)

A fixed base;
A movable base disposed on the fixed base;
A fixed-side first end rotatably connected to the fixed base; and a fixed-side first other end rotatably connected to the movable base, the fixed-side first end being A main arm that moves the movable base between a closed position and an open position with respect to the fixed base by rotating as a center;
A fixed-side second end rotatably connected to the fixed base; and a moving-side second other end rotatably connected to the movable base, and the fixed base When moving the moving base, a driven arm that determines the moving posture of the moving base by rotating about the fixed-side first end;
The shaft to which the main drive arm is connected, and when the main drive arm is urged to rotate, the shaft is urged to rotate in the return direction to a predetermined neutral position, and the shaft is rotated to a position past the neutral position. And a hinge mechanism that urges the shaft to rotate in a direction opposite to the return direction,
The main drive arms are disposed at both ends of the shaft, and the pair of main drive arms are configured to rotate in synchronization with the shaft,
A tilt mechanism characterized in that when the movable base moves to the open position, the movable base and the follower arm hold the movable base in a tilted state with respect to the fixed base. When the moving base is located at the closed position, the end on the opposite side to the end on the abutment side end of the fixed base is a reference end,
The distance between the fixed side first end of the main arm and the moving side first end is W1,
The distance between the reference end and the fixed first end is W2.
The distance between the abutting side end and the moving side first end is W3,
The distance between the fixed second end of the driven arm and the movable second end is L1,
The distance between the reference end and the fixed second end is L2,
When the distance between the abutting side end and the moving side second end is L3,
2. The tilt mechanism according to claim 1, wherein the distances W1, W2, W3, L1, L2, and L3 are set so as to satisfy the conditions of W1 <W2 + W3 and L1 <L2 + L3. Provide wiring for connecting the fixed base and the movable base,
The tilt mechanism according to claim 1, wherein the wiring is disposed on the main arm.   The tilt mechanism according to claim 3, wherein the wiring is a flexible cable.   The tilt mechanism according to claim 3 or 4, wherein the wiring is disposed in the main arm by insert molding.   A mobile phone incorporating the tilt mechanism according to any one of claims 1 to 5.   An electronic dictionary incorporating the tilt mechanism according to any one of claims 1 to 5. A portable game machine in which the tilt mechanism according to any one of claims 1 to 5 is incorporated.

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