JP5203483B2 - Opening and closing mechanism - Google Patents

Description

  The present invention relates to an opening / closing mechanism that opens and closes a second casing relative to a first casing, and more particularly to an opening / closing mechanism in which the first casing and the second casing are connected by wiring.

  In general, a portable device configured to be able to move a second housing (movable base) in which a liquid crystal display device or the like is disposed with respect to a first housing (fixed base) in which a numeric keypad or the like is disposed. A terminal device is provided. Further, in this type of portable terminal device, in order to be able to see the liquid crystal display device for a long time, the second housing in which the liquid crystal display device is disposed is provided as the first housing by providing a tilt mechanism. In contrast, the liquid crystal display device is improved in visibility (see Patent Document 1).

  In an electronic apparatus having this type of tilt mechanism, it is necessary to provide wiring for transmitting and receiving signals and supplying power between the first housing and the second housing. In the tilt mechanism disclosed in Patent Document 1, the wiring connecting the first housing and the second housing is bonded to the arm provided between the first housing and the second housing. In other words, a method of fixing by using an insert molding method has been adopted.

Utility Model Registration No. 3157666

  However, in the method of fixing the wiring to the arm using bonding, an adhesive is required in addition to the arm and the wiring, and the number of parts increases. Moreover, it is necessary to apply the adhesive without protruding to the narrow arm during the assembly operation, which causes a problem that the assembly operation becomes troublesome.

  In addition, the method of disposing the wiring on the arm using insert molding requires a special mold, which increases the cost of the mold and may cause damage to the wiring due to heat during insert molding. There was a point.

  The present invention has been made in view of the above points, and an object of the present invention is to provide an opening / closing mechanism capable of easily and reliably arranging a wiring in an arm.

From the first point of view, the above problem is
A pair of main arms that have one end connected to the first housing and the other end connected to the second housing, and that opens and closes the second housing with respect to the first housing with rotation;
An opening / closing mechanism having a wiring disposed between the first casing and the second casing,
Among the pair of main arms, at least one of them is a wiring internal arm constituted by an arm body and an arm cover,
Forming a first slide portion for slidingly mounting the arm cover on the arm body, and forming a second slide portion engaging the first slide portion on the arm cover;
This can be solved by an opening / closing mechanism characterized in that, when the arm cover is attached to the arm body, the wiring is fixed between the arm body and the arm cover.

  According to the disclosed hinge mechanism, the wiring can be fixed in the wiring internal arm by slidingly mounting the arm cover on the arm main body, so that the wiring can be reliably and easily disposed on the arm.

FIG. 1 shows an open / close mechanism according to an 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 an opening / closing mechanism according to an 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 an exploded perspective view of the opening / closing mechanism according to the embodiment of the present invention. FIG. 4 is a diagram for explaining the operation of the opening / closing mechanism according to the embodiment of the present invention. FIG. 5 is an enlarged perspective view showing the vicinity of the main arm and hinge base of the opening / closing mechanism according to the embodiment of the present invention. FIG. 6 is an exploded perspective view showing an enlarged view of the vicinity of the main arm and the hinge base of the opening / closing mechanism according to the embodiment of the present invention. FIG. 7 is a perspective view of a hinge mechanism provided in the opening / closing mechanism according to an embodiment of the present invention. FIG. 8 is an exploded perspective view of a hinge mechanism provided in the opening / closing mechanism according to an embodiment of the present invention. FIG. 9 is a perspective view of a wiring arm provided in an opening / closing mechanism according to an embodiment of the present invention. FIG. 10 is an exploded perspective view of the wiring arm provided in the opening / closing mechanism according to the embodiment of the present invention. 11A and 11B are diagrams for explaining the effect of the opening / closing mechanism according to the embodiment of the present invention, in which FIG. 11A is a plan view, FIG. 11B is a cross-sectional view taken along line AA in FIG. (C) is sectional drawing which follows the BB line in (A). 12A and 12B are diagrams showing an opening / closing mechanism as a comparative example, in which FIG. 12A is a plan view and FIG. 12B is a cross-sectional view taken along line AA in FIG.

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

  1 to 4 show an opening / closing mechanism according to an embodiment of the present invention. In this embodiment, as a kind of opening / closing mechanism, the movable base 14 (second housing) is opened / closed with respect to the fixed base 12 (first housing), and the movable base 14 is moved with respect to the fixed base 12. A tilt mechanism that holds 14 in a tilted state will be described as an example.

1 and 2 are perspective views showing an appearance of a tilt mechanism 10 according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of the tilt mechanism 10, and FIG. 4 is a side view showing an operation of the tilt mechanism 10. FIG. In the present embodiment, an example in which the tilt mechanism 10 is applied to a mobile terminal device will be described.

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

  The fixed base 12 is a main body of the mobile terminal device. In the walking embodiment, the fixed base 12 is configured by combining the first housing half 12A and the second housing half 12B, as shown in FIG. Further, a hinge base storage portion 13 for storing a hinge frame 40 described later is formed in the second housing half 12B positioned inside in the combined state. An electronic component such as a keyboard or a liquid crystal display device is provided on the upper surface 24 of the fixed base 12.

  The movable base 14 serves as a lid of the portable terminal device, and is configured to be movable with respect to the fixed base 12 by the main arms 16A and 16B and the driven arm 18. A liquid crystal display device 30 and the like are provided on the upper surface 25 of the movable base 14. Further, as shown in FIG. 3, the movable base 14 is also configured by combining the first housing half 14A and the second housing half 14B. Furthermore, storage recesses 15A to 15C in which main driving arms 16A and 16B and a following arm 18 described later are stored are formed in the second housing half 14B located on the inner side.

  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. In this open state, the end of the moving base 14 in the direction of the arrow Y1 in the drawing (the side surface serving as the end) is in contact with the upper surface 24 of the fixed base 12 (this end is the contact 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.

  The main driving arms 16A and 16B are made of metal or hard resin, and as shown in an enlarged view in FIGS. 5 and 6, when viewed from the direction of the rotation axis (the direction of the arrow X1 or X2 in the figure), As a crank shape (Z shape). Specifically, first extending portions 63A and 63B extending in one direction (Z1 direction) perpendicularly from one end portion thereof with the center portion 62A extending horizontally in FIG. 6 as the center, and other end portions The second extending portions 64A and 64B extending in the direction perpendicular to the extending direction of the first extending portion 63A in the direction opposite to the extending direction (Z2 direction) are integrally formed.

  Moreover, the moving side 1st spindle 34 is rotatably arrange | positioned at the upper end part in FIG. 6 of main drive arm 16A, 16B. The moving side first support shaft 34 is attached to the fixed base 12. On the other hand, the lower ends of the main drive arms 16A and 16B in FIG. 6 are fixed to the fixed first support shaft 32. The fixed first support shaft 32 constitutes a part of hinge mechanisms 20A and 20B described later.

  The main arms 16A and 16B are configured so that the movable base 14 is moved between the closed position and the open position with respect to the fixed base 12 by the rotation of the fixed first support shaft 32 disposed on the fixed base 12 side. Move between. At this time, the upper ends of the main driving arms 16A and 16B also rotate about the moving side first support shaft 34.

  However, in the configuration in which the moving base 14 is moved with respect to the fixed base 12 only by the main arms 16A and 16B, the moving base 14 rotates around the moving-side first support shaft 34, and the posture at the time of movement. Becomes unstable. For this reason, a driven arm 18 is provided between the fixed base 12 and the movable base 14 together with the main driving arms 16A and 16B.

  The driven arm 18 has a fixed second support shaft 36 rotatably disposed at a lower end portion in FIG. 6, and a movable second support shaft 38 rotatably disposed at an upper end portion. The fixed-side second support shaft 36 is attached to the fixed base 12, and the moving-side second support shaft 38 is attached to the moving base 14. In this embodiment, unlike the main driving arm 16, the driven arm 18 is disposed only on one side of each base 12, 14, but the bases 12, 14 are sandwiched in the same manner as the main driving arm 16. Two may be provided.

  As described above, by providing the driven arm 18 together with the main driving arms 16A and 16B between the fixed base 12 and the moving base 14, the moving base 14 moves relative to the fixed base 12 when the moving base 14 is moved. Move with a constant movement trajectory. Therefore, in the opening / closing operation of the tilt mechanism 10, the posture of the moving base 14 is stable and occurrence of unnecessary displacement can be prevented.

  Next, the hinge mechanism 20 will be described. FIG. 7 is a perspective view of the hinge mechanisms 20A and 20B, and FIG. 8 is an exploded perspective view of the hinge mechanisms 20A and 20B. It should be noted that the hinge mechanism 20A and the hinge mechanism 20B have substantially the same configuration except that the inside is a target configuration because they rotate in opposite directions as the main driving arms 16A and 16B rotate. For this reason, the hinge mechanisms 20A and 20B will be described collectively (in the case of description collectively, the hinge mechanisms 20 are indicated).

  The hinge mechanism 20 generally includes a shaft 41, a compression spring 50, a head cam 51, a drive cam 52, a hinge case 53, a washer 54, 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 part exposed from the hinge case 53 of the shaft 41 becomes the fixed-side first support shaft 32 to which the main driving arms 16A and 16B are attached. Further, the compression spring 50, the head cam 51, and the drive cam 52 are disposed in a portion of the shaft 41 that is located in the hinge case 53. Furthermore, the washer fixing portion 41a located at the end portion of the shaft 41 protrudes from the end portion of the hinge case 53, and the washer 54 is fixed to this portion.

  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).

  In the present embodiment, the hinge mechanism 20 (20A, 20B) having the above-described configuration is provided on the main drive arms 16A, 16B, respectively. Specifically, a hinge mechanism 20A is provided on the main drive arm 16A, and a hinge mechanism 20B is provided on the main drive arm 16B. Therefore, the main driving arm 16A and the main driving arm 16B are configured independently of each other, and are not configured to be connected using a shaft or the like (this will be described in detail later). The main driving arm 16A provided with the hinge mechanism 20A and the main driving arm 16B provided with the hinge mechanism 20B are mounted on the hinge frame 40.

  Next, the hinge frame 40 will be described mainly with reference to FIGS. The hinge frame 40 is made of hard resin or metal. The hinge frame 40 is fixed to the fixed base 12 by being stored in the hinge base storage portion 13 formed in the second housing 12B as described above (see FIG. 4).

  The hinge space 40 has a structure in which a frame main body 42, main arm storage portions 43A and 43B, a driven arm storage portion 44, hinge storage portions 45A and 45B, and the like are integrally formed. The frame main body 42 is a portion having a thin plate shape extending long in the X1 and X2 directions in the drawing, and main arm storage portions 43A and 43B and hinge storage portions 45A and 45B are formed on both sides thereof. A driven arm storage portion 44 is formed at the end.

  The main arm storage unit 43A and the hinge storage unit 45A are provided adjacent to each other, and the main arm storage unit 43B and the hinge storage unit 45B are provided adjacent to each other. The main arm storage portions 43A and 43B are concave portions in which predetermined portions of the lower ends of the main arm 16A and 16B are rotatably stored. The hinge storage portions 45A and 45B are formed therein with storage holes for storing the hinge mechanisms 20A and 20B (see the hinge storage portion 45A on the X1 direction side in FIG. 6). The storage hole is formed so as to penetrate the hinge storage portions 45A and 45B in the X1 and X2 directions.

  The main moving arms 16A and 16B and the hinge mechanisms 20A and 20B are attached to the hinge space 40 as follows. The main drive arms 16A and 16B are previously removed from the fixed first support shaft 32 of the hinge mechanisms 20A and 20B. Then, the main driving arms 16A and 16B are moved in the direction of the arrow Z2 in the figure, and the lower ends thereof are mounted in the main driving arm storage units 43A and 43B.

  Subsequently, the hinge mechanism 20A is inserted into the storage hole formed in the hinge storage portion 45A in the direction of the arrow X1, and the hinge mechanism 20B is inserted into the storage hole formed in the hinge storage portion 45B in the direction of the arrow X2. As a result, the hinge mechanisms 20A and 20B are attached to the hinge storage portions 45A and 45B. With this insertion, the fixed first support shaft 32 is press-fitted into an attachment hole formed at the lower end of the main drive arms 16A and 16B. Thereby, hinge mechanism 20A, 20B and main drive arm 16A, 16B become an integral structure.

  Further, a bearing portion 46 is formed on the outer wall of the main arm storage portions 43A and 43B (in the figure, only the bearing portion 46 formed on the outer wall of the main arm storage portion 43A appears in the figure). The distal end portion of the fixed first support shaft 32 protruding from the main driving arms 16A and 16B is supported by the bearing portion 46. Thereby, main drive arms 16A and 16B become composition which can rotate to hinge frame 40 with operation of hinge mechanisms 20A and 20B.

  The driven arm 18 is inserted into the driven arm storage portion 44 with the fixed second support shaft 36 removed. On both side walls of the driven arm storage portion 44, mounting holes for mounting the fixed second support shafts 36 are formed. After the driven arm 18 is moved to the driven arm storage portion 44 in the Z2 direction and mounted on the driven arm storage portion 44, the fixed-side second support shaft 36 is inserted from the mounting hole formed in the side wall. It attaches to the attachment hole formed in the lower end part. As a result, the driven arm storage portion 44 is configured to be rotatable with respect to the hinge frame 40.

  In the tilt mechanism 10 according to the present embodiment, the main driving arms 16A and 16B are provided with hinge mechanisms 20A and 20B, respectively, and the main driving arms 16A and 16B have an independent configuration. However, the main drive arms 16A and 16B are disposed together on a single hinge frame 40 and are configured to be rotatable with respect to the hinge frame 40. Thereby, even if each main drive arm 16A, 16B is an independent structure, when the movement base 14 moves, each main drive arm 16A, 16B will rotate synchronously. Therefore, no rattling occurs when the moving base 14 moves, and the moving base 14 can be stably moved between the open position and the closed position.

  Further, in the tilt mechanism 10 according to the present embodiment, by providing the main driving arms 16A and 16B on the hinge frame 40, it is possible to eliminate the need for the shaft that has been conventionally disposed between the main driving arms 16A and 16B. . This will be described with reference to FIGS. 11 and 12.

  FIG. 12 shows the tilt mechanism 100 using the shaft 130. The tilt mechanism 100 moves the moving base 114 relative to the fixed base 112 between an open position and a closed position. The tilt mechanism 100 includes main driving arms 116A and 116B and a driven arm 118, and a hinge mechanism 120 is provided only on the main driving arm 116B. Further, the main drive arm 116A and the main drive arm 116B are connected by a shaft 130, whereby the main drive arms 116A and 116B are configured to rotate synchronously.

  However, in this conventional tilt mechanism 100, the shaft 130 is positioned long in the X1 and X2 directions between the main drive arms 116A and 116B. Since the portion where the shaft 130 is disposed is a position close to the outside, the portion is suitable for disposing a connector terminal for external connection. However, in the conventional tilt mechanism 100, since the shaft 130 is disposed at this portion, there is a problem in that the degree of freedom of the arrangement position of electronic components such as connector terminals for external connection is reduced.

  On the other hand, FIG. 11 shows the tilt mechanism 10 according to the present embodiment. In the present embodiment, the conventionally required shaft 130 or the like is not provided between the main drive arm 16A and the main drive arm 16B. Since the main driving arms 16A and 16B are both disposed on the hinge frame 40, the main driving arms 16A and 16B rotate synchronously when the moving base 14 moves even if they are not connected by a shaft or the like. be able to. Furthermore, the thickness W (indicated by the arrow in FIG. 11C) of the frame main body 42 of the hinge frame 40 can be a thin dimension of 1 mm or less.

  Therefore, in the tilt mechanism 10 of the present embodiment, a space portion S indicated by a one-dot chain line in FIG. 11C is formed between the main drive arm 16A and the main drive arm 16B. Therefore, electronic parts such as connector terminals for external connection can be disposed in the space S, and the degree of freedom in mounting the electronic parts in the fixed base 12 can be increased.

  Next, the dimensions of the main driving arm 16 (16A, 16B) and the driven arm 18 constituting the tilt mechanism 10 will be described. FIG. 3A shows the lengths of the main driving arm 16 and the driven arm 18 with arrows.

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

  On the other hand, the distance between the fixed second support shaft 36 and the movable second support shaft 38 of the driven arm 18 is L1. Further, the distance between the reference end portion 28 and the fixed-side second support shaft 36 is L2. Furthermore, the distance between the contact-side end portion 31 and the moving-side second support shaft 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. FIG. 4 shows an operation in which the moving base 14 moves from the closed state to the open state.

  FIG. 4A 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 clockwise about the fixed second support shaft 36, and the main drive arm 16 (16A, 16B) also rotates clockwise about the fixed first support shaft 32. At this time, the main arm 16 is urged to rotate clockwise 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 starts to move away from the fixed base 12 toward the open position. At this time, the main arm 16 rotates about the fixed first support shaft 32 with respect to the fixed base 12, and the driven arm 18 also rotates about the fixed second support shaft 36 with respect to the fixed base 12. . At the same time, the main arm 16 rotates about the moving first support shaft 34 with respect to the moving base 14, and the driven arm 18 also moves with respect to the moving base 14 about the moving second support shaft 38. Rotate.

  During this movement, the moving 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, in a state where the convex surfaces of the drive cam 52 and the head cam 51 have not reached the neutral position, when the movement operation is released, the fixed base 12 performs an operation of returning to the closed position again by the urging force of the compression spring 50.

  FIG. 4B 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 counterclockwise about the fixed first support shaft 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. Then, when the abutting side end 31 of the moving base 14 comes into contact with the upper surface 24 of the fixed base 12, the movement of the moving base 14 stops. Thereby, as shown in FIG.4 (C), the movement base 14 will be in an open state (tilt 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 counterclockwise 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.

  In this embodiment, since the main driving arm 16 has a crank shape, it is not necessary to form a relief hole in the reference end portion 28 of the fixed base 12 for escaping the main driving arm 16. That is, if the fixed side first support shaft 32 and the moving side first support shaft 34 are not crank-shaped but linearly driven main arms (indicated by a one-dot chain line 16-1 in FIG. 4C), Since the position of the reference end portion 28 indicated by the arrow P interferes with the main drive arm 16-1, a clearance hole needs to be formed at this position P. However, when a clearance hole is formed in the fixed base 12, dust enters the fixed base 12 through the clearance hole. Further, if there is a clearance hole in the outer peripheral portion of the fixed base 12, the appearance is not good.

  On the other hand, by making the main driving arm 16 into a crank shape as in the present embodiment, the main driving arm 16 is configured to bypass the reference end portion 28, thereby eliminating the need to form a relief hole in the reference end portion 28. be able to. Thereby, the penetration | invasion of the dust into the fixed base 12 and the fall of the design property of the fixed base 12 can be suppressed. Even if the main driving arm 16 has a crank shape, the original operation of the main driving arm 16 itself is not hindered.

  The operation and operation for moving the moving base 14 toward the closed position from the open state shown in FIG. 4C is opposite to the operation and operation described above with reference to FIG. 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.

  Next, a wiring arrangement method between the fixed base 12 and the hinge base storage portion 13 will be described.

  As described above, the fixed base 12 is provided with a liquid crystal display device and a numeric keypad, and the movable base 14 is provided with a liquid crystal display device and the like. Need to be electrically connected. In the present embodiment, a flexible cable 61 (flexible wiring board) is used as a wiring for electrically connecting the fixed base 12 and the movable base 14, and the flexible cable 61 is connected to the main driving arms 16A and 16B. It is characterized in that it is provided in one main driving arm 16A (in the following description, this main driving arm 16A is particularly referred to as a wiring internal arm 16A).

  Since the flexible cable 61 is thin, it can be installed in the wiring internal arm 16A. Moreover, since the flexible cable 61 is rich in flexibility, even if the flexible cable 61 is disposed in the wiring internal arm 16A that rotates as the moving base 14 moves as described above, there is little risk of disconnection or deterioration over time. .

  The wiring internal arm 16 </ b> A includes an arm main body 69 and an arm cover 70. 9 shows a state in which the flexible cable 61 and the arm cover 70 are attached to the arm main body 69, and FIG. 10 shows a state in which the flexible cable 61 and the arm cover 70 are removed from the arm main body 69.

  As shown in FIG. 10, the arm main body 69 has a center portion 62A, a first extension portion 63A, and a second extension portion 64A. A cable housing portion 62a is formed on the surface of the first extending portion 63A on the side where the arm cover 70 is disposed (hereinafter referred to as the inner surface). Similarly, a cable storage portion 63a is formed on the inner side surface of the first extension portion 63A, and a cable storage portion 64a is formed on the inner side surface of the second extension portion 64A. The cable storage portions 62a to 64a are continuous, and wall portions 65 and 66 are formed on both sides.

  In addition, a slide groove 67 having a predetermined length is formed in the wall portions 65 and 66 formed on both sides of the cable housing portion 63a from the upper end portion in the arrow H1 direction in the figure. Similarly, a slide groove 68 having a predetermined length is formed on the wall portions 65 and 66 formed on both sides of the cable housing portion 64a from the upper end portion in the direction of the arrow H1 in the figure.

  The arm cover 70 is a resin molded product, and has a configuration in which a central portion 72, a first extending portion 73, and a second extending portion 74 are integrally formed. The central portion 72 is formed to correspond to the shape of the cable storage portion 62a of the arm body 69. Similarly, the first extension 73 corresponds to the shape of the cable storage 63a, and the second extension 74 corresponds to the shape of the cable storage 64a.

  In addition, slide protrusions 77 are formed on both side walls of the first extension part 73, and slide protrusions 78 are formed on both side walls of the second extension part 74. The slide protrusion 77 and the slide groove 67 are paired and have a corresponding shape. The slide protrusion 78 and the slide groove 68 are also paired and have a corresponding shape.

  In order to attach the flexible cable 61 to the wiring internal arm 16 </ b> A, first, the flexible cable 61 is inserted into the cable storage portions 62 a to 64 a formed in the arm body 69. At this time, since the flexible cable 61 is flexible, even if it is the wiring-internal arm 16A having the crank shape as described above, the wiring-internal arm 16A is securely mounted in the cable housing portions 62a to 64a. can do. Moreover, since the wall parts 65 and 66 are formed in the both sides of the cable storage parts 62a-64a, the flexible cable 61 is guided to the wall parts 65 and 66 on both sides. Also by this, the wiring internal arm 16A can be stored in the cable storage portions 62a to 64a with high positional accuracy.

  As described above, when the flexible cable 61 is mounted in the cable storage portions 62a to 64a, the arm cover 70 is mounted on the arm body 69.

  Specifically, the slide groove 67 and the slide protrusion 77 are aligned at the upper part of the arm body 69, and the slide groove 68 and the slide protrusion 78 are aligned. Subsequently, the arm cover 70 is moved to FIG. The slide protrusion 77 is inserted into the slide groove 67 and the slide groove 68 is inserted into the slide groove 68 by moving in the direction indicated by the arrow H1.

  The lengths of the slide grooves 67 and 68 and the slide protrusions 77 and 78 are set equal. Therefore, the arm cover 70 is fixed to the arm body 69 by the lower end portions of the slide protrusions 77 and 78 coming into contact with the lower end portions of the slide grooves 67 and 68. Thus, the flexible cable 61 is disposed between the arm main body 69 and the arm cover 70.

  The shape of the slide protrusions 77 and 78 is set to be the same as or slightly larger than the shape of the slide grooves 67 and 68. For this reason, the slide protrusions 77 and 78 are strongly engaged with the slide grooves 67 and 68 in a state where the arm cover 70 is attached to the arm main body 69. For this reason, even if the wiring internal arm 16 </ b> A rotates as the moving base 14 moves, the arm cover 70 does not come off from the arm main body 69. In addition, the arm cover 70 can be securely attached to the arm body 69 by engaging the two pairs of the slide protrusion 77 and the slide groove 67 and the pair of the slide protrusion 78 and the slide groove 68 respectively. it can.

  Further, with the arm cover 70 attached to the arm body 69, a gap that is the same as or slightly narrower than the thickness of the flexible cable 61 is formed between the arm cover 70 and the cable storage portions 62a to 64a. It is configured. Therefore, the arm cover 70 presses the flexible cable 61 against the cable storage portions 62a to 64a in a state where the arm cover 70 is attached to the arm main body 69.

  Thereby, even if the wiring internal arm 16A rotates as the moving base 14 moves, the flexible cable 61 can be prevented from being displaced with respect to the wiring internal arm 16A. In particular, the wiring internal arm 16A according to the present embodiment has a crank shape instead of a linear shape. Therefore, the flexible cable 61 is also bent in the wiring arm 16A. For this reason, it is possible to restrict the flexible cable 61 from moving unnecessarily in the wiring internal arm 16 </ b> A, thereby preventing deterioration over time and extending the life of the flexible cable 61. Furthermore, since the flexible cable 61 that electrically connects the fixed base 12 and the movable base 14 is not exposed to the outside, the design of the tilt mechanism 10 can be improved.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific embodiments described above, and various modifications are possible within the scope of the gist of the present invention described in the claims. It can be modified and changed.

10 Tilt mechanism 12 Fixed base 14 Moving base 16, 16A, 16B Main arm (16A wiring internal arm)
18 driven arm 20 hinge mechanism 32 fixed side first support shaft 34 moving side first support shaft 36 fixed side second support shaft 38 moving side second support shaft 40 hinge frame 62A central portion 63A first extension portion 64A second extension Outer portions 62a, 63a, 64a Cable housing portions 65, 65 Wall portions 67, 68 Slide groove 70 Arm cover 72 Center portion 73 First extension portion 74 Second extension portions 77, 78 Slide protrusion

Claims (6)

A pair of main arms that have one end connected to the first housing and the other end connected to the second housing, and that opens and closes the second housing with respect to the first housing with rotation; ,
An opening / closing mechanism having a wiring disposed between the first casing and the second casing,
Among the pair of main arms, at least one of them is a wiring internal arm constituted by an arm body and an arm cover,
Forming a first slide portion for slidingly mounting the arm cover on the arm body, and forming a second slide portion engaging the first slide portion on the arm cover;
An opening / closing mechanism configured to fix the wiring between the arm body and the arm cover when the arm cover is attached to the arm body.   2. The opening / closing mechanism according to claim 1, wherein when the wiring internal arm is viewed from the direction of the rotation axis, the shape of the wiring internal arm is bent into a crank shape.   The opening / closing mechanism according to claim 1 or 2, wherein the wiring is a flexible cable.   4. The opening / closing mechanism according to claim 1, wherein two pairs of the first slide portion and the second slide portion are provided on the wiring internal arm. 5.   When the main arm is rotated and biased to each of the pair of main arms, the main arm is rotated and biased in the returning direction to a predetermined neutral position, and the main arm is rotated to a position past the neutral position. The opening / closing mechanism according to any one of claims 1 to 4, further comprising a hinge mechanism that rotationally biases the main drive arm in a direction opposite to the return direction. The base member provided with the flat-plate-shaped main-body part fixed to the said 1st housing | casing, and the arm mounting part to which the said main drive arm is attached to the both ends of this main-body part is provided. The opening / closing mechanism according to any one of 1 to 5.

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