JP2005100700A - Tilt rotation mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple tilt rotation mechanism which can secure the appropriate movement of the curved part of a flexible circuit board by preventing the breakage of the flexible circuit board and the reduction of a clipping force due to a change with passage of time, and a tilt rotation mechanism which contributes to a high function and a small size. <P>SOLUTION: This tilt rotation mechanism has a base fitting 1 capable of relative rotation and a flexible printed-circuit board 3 which connects electrically non-facing both sides passing through an FPC depressing fitting 19, and the FPC 3 has a curved part 3a of an arc shape along the wiring direction L, a throughhole 3d at one end side of the curved part, and a throughhole 3f at the other side. Furthermore, a boss 1a which is engaged with the throughhole 3d is formed at the base fitting and an FPC supporting projection 17a which is engaged with the through hole 3f is formed at the FPC depressing fitting 19. The throughholes 3d, 3f are formed at a portion other than the wiring portion of the FPC 3 and are engaged with the boss 1a and the FPC supporting projection 17a in a state that the curved part 3a is folded back in the normal line direction W. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a tilt rotation mechanism that can electrically connect a plurality of relatively rotatable components.

  A tilt rotation mechanism for electrically connecting a plurality of conventional relatively rotatable parts, for example, a tilt rotation mechanism used for a connecting portion between a main body cabinet and a viewfinder in a camera-integrated VTR is shown in FIGS. 11 will be described below.

  As shown in FIG. 8, the camera-integrated VTR is provided with a rotation mechanism as a connecting device at the joint between the main body cabinet 103 and the viewfinder 101, and the viewfinder 101 rotates with respect to the main body cabinet 103. The structure can be set to a desired rotation angle. In addition, both the main body cabinet 103 and the viewfinder 101 are provided with an electric circuit such as a signal processing circuit for performing signal processing, and both are electrically connected and at the same time the viewfinder 101 is connected to the main body cabinet 103. It is mechanically connected so that the tilt can be rotated.

  As shown in FIG. 8, the mechanical connecting portion of the conventional tilt rotation mechanism is such that a leaf spring 102 is engaged with the joint 101a of the viewfinder 101, and the main body cabinet 103 and the sheet metal 104 are pivoted on the joint 101a. By attaching the screw 106 to the screw hole 101b of the viewfinder 101 through the insertion hole 105a of the disc 105, the disc 105 is superimposed on the sheet metal 104 and screwed to the viewfinder 101. Realized. With this configuration, the leaf spring 102 and the disc 105 can be rotated synchronously with respect to the viewfinder 101, while the main body cabinet 103 and the sheet metal 104 sandwiched between them can be arbitrarily tilted with respect to the viewfinder 101. It has become.

  Then, a strip-shaped flexible substrate 107 as an electrical connection body is inserted into the hollow portion 108 of the mechanical connection portion in a swirl state a plurality of times, and both ends of the flexible substrate 107 are inserted into the main body cabinet 103 and the viewfinder 101. The rotation of the viewfinder 101 and the main body cabinet 103 is absorbed by the expansion and reduction operations of the roll diameter of the winding portion of the flexible substrate 107 by connecting to the connectors (not shown) of the respective electric circuits. Thus, the twist that causes the disconnection of the flexible substrate 107 is eliminated (for example, see Patent Document 1).

  However, as the number of processing data increases and the number of wires in the flexible substrate increases, the width of the flexible substrate increases. As a result, the flexible substrate space between the main body cabinet 103 and the viewfinder 101 increases. The pace also becomes large, which is against the miniaturization.

On the other hand, as a method for arranging a flexible substrate between the main body cabinet 103 and the viewfinder 101, a technique shown in FIG. 9 is known. In FIG. 9, the flexible substrate 109 is formed in a U shape, the U-shaped curved portion is folded back, and the folding position is moved along with the relative rotation between the main body cabinet 103 and the viewfinder 101. . In FIG. 9, in order to realize the movement of the folding position, the start point 110a and the end point 110b of the bending portion 110 of the flexible substrate 109 are fixed by holders 111 and 112 that rotate relative to each other (for example, patents). Reference 1).
Japanese Patent Laid-Open No. 6-95212 (FIGS. 1, 8, 13, and 15)

  However, as a method of fixing the flexible substrate 109 with the holders 111 and 112, as shown in FIGS. 10 and 11, a sandwiching member that forms a crank-shaped gap S in the width direction of the flexible substrate 109 is used. 111a-111b and 112a-112b are used to pinch by passing between them, so a long time use will cause a pressing force in the reverse direction locally across the width of the flexible substrate, resulting in disconnection. There was a problem such as the occurrence of looseness due to the fear of squeezing and the reduction of the pinching force of the sandwiching member.

  In addition, a structure for realizing high functionality and miniaturization in a trade-off relationship has been desired.

  The present invention has been made in order to solve the above-described problems, and eliminates the disconnection of the flexible substrate and the decrease in the holding force due to secular change. An object of the present invention is to provide a simple tilt rotation mechanism that can ensure the movement. Another object of the present invention is to provide a tilt rotation mechanism that contributes to high functionality and downsizing.

In order to achieve the above object, the present invention has the following configuration.
A flexible printed circuit board that electrically connects between the non-opposing surface sides of the first and second rotating members through the relatively rotatable first and second rotating members. The flexible printed circuit board includes an arc-shaped curved portion along a wiring direction, a first fixing portion on one end side of the curved portion, and the other end of the curved portion. A second fixing portion on the side, wherein the first rotating member has a first engaging shaft that engages with the first fixing portion, and the second rotating member is And a second engaging shaft that engages with the second fixing portion, wherein the first and second fixing portions are formed on a portion other than the wiring portion of the flexible printed circuit board. The first and second fixing portions engage with the first and second engaging shafts in a state where the bending portion is folded back in the normal direction.

  The first rotating member includes a spacer that is sandwiched between the flexible printed circuit boards in a folded state and has a ring-shaped sliding portion having a size including the curved portion, The second rotating member has a holder that can slide in the sliding portion, and the second engagement shaft is formed in the holder.

  Further, the first rotating member has a plurality of click spaces in the same circumference, and the second rotating member is engaged with the space at the position of the same circumference. An elastic portion having a click projection is provided.

  Further, the click projection is grounded.

Further, the first and second rotating members pass between the first and second rotating members in an unoccupied region of the flexible printed circuit board in a folded state. A guide groove for passing a connecting member that connects between the non-opposing surfaces is formed.
In addition, an opening is formed in at least one of the first and second rotating members.

  According to the tilt rotation mechanism according to the present invention, the first and second fixing portions are shaft engaging portions formed in portions other than the wiring portion of the flexible printed circuit board, and the bending portion is in the normal direction. In order to engage with the first and second engaging shafts in the folded state, the positional displacement of the flexible printed circuit board accompanying the tilt rotation is eliminated, damage to the wiring portion is prevented, and the product life is greatly increased. Can improve.

  Further, a smooth tilt rotation can be realized by having a spacer having a sliding portion and a holder that can slide in the sliding portion, and forming the second engagement shaft in the holder.

  In addition, by providing the first rotating member with a click space and providing the second rotating member with an elastic portion having a click protrusion that engages with the space, an indication of the amount of rotation and stability is provided. The use angle and the like can be known to the user with a simple configuration.

  In addition, by grounding the click projection, it is possible to easily secure grounding between the devices that relatively tilt and rotate.

  Further, the spacer passes through the first and second rotating members into the non-occupied region of the flexible printed circuit board in the folded state, and the first and second rotating members By forming a guide groove through which the connecting member that connects between the non-facing surfaces is passed, the degree of freedom of the mounting position of the wiring cord etc. coming out from the tilt rotation mechanism is increased, and as a result, the design of the apparatus using the tilt rotation mechanism This contributes to the simplification of the system and downsizing of the device.

  In addition, by forming an opening in at least one of the first and second rotating members, heat resistance can be improved, and user operability (usage time, use age group) can be improved by weight reduction.

  Hereinafter, a first embodiment of the tilt rotation mechanism of the present invention will be described with reference to FIGS. 1 to 7, for example, a tilt rotation mechanism used for connecting a main body cabinet and a viewfinder in a camera-integrated VTR. To do.

  FIG. 1 is an exploded perspective view of a tilt rotation mechanism according to the present embodiment. The tilt rotation mechanism in the present embodiment is for connecting the viewfinder and the electrical circuits in the main body cabinet that are rotatably coupled to each other, and includes a base metal fitting 1 and a flexible printed circuit board (FPC). ) 3, ring spacer 5, first norglide ring 7, ring metal fitting 9, second norglide ring 11, holding metal fitting 13, screw 15, holder 17, FPC holding metal fitting 19 and screw 21. .

  The base metal fitting 1 is a base metal fitting attached to the viewfinder side, and includes a boss 1a that enables positioning and screwing of other members, a guide port 1b of the FPC 3, and a guide port 1c for other wiring (not shown). And a heat radiating opening 1d.

  The boss 1 a penetrates the FPC 3 and the ring spacer 5 and can be fixed to the presser fitting 13 using a screw 15, so that they can be positioned and fixed. In this embodiment, the bosses 1a are provided at three locations.

  As shown in FIG. 2, the FPC 3 includes a curved portion 3a whose longitudinal direction (electrical wiring direction) L perpendicular to the width direction (normal direction of bending) W is an arc shape, and the vicinity of the starting point of the curved portion 3a. A first positioning portion P1 provided on 3b, a second positioning portion P2 provided near the end point 3e of the bending portion 3a, a viewfinder side terminal 3h, and a main body cabinet side terminal 3i. .

  The curved portion 3a is a circular (arc-shaped) curved portion formed so as to extend around the columnar rotation center portion 5f of the ring spacer 5 (FIG. 1). Any shape that forms a portion that overlaps the same curved shape when folded as shown in FIG. If it is U-shaped, a semicircular curved portion is formed, and if it is a shape closer to a circle (substantially Ω shape) than the U-shape, an arc-shaped curved portion of 180 degrees or more is formed.

  The first positioning portion P1 (FIG. 2) forms a through hole that engages with the boss 1a, and the protruding portion 3c that is shifted from the wiring area of the FPC 3 in the width direction W side and the through of the boss 1a. 3d. Although the protrusion 3c is formed by deforming the FPC 3, it may be formed by a separate member. In the present embodiment, the through hole 3d is formed by sharing the boss 1a used for other positioning in order to reduce the number of parts. However, the present invention is not limited to this, and a dedicated protrusion provided in the base metal fitting 1 is used. Even if it is the hollow (hole) and through-hole to engage, there exists the same effect. Further, the formation position of the member (1a) that penetrates or engages with the through hole 3d is not limited to the base metal fitting 1, but may be provided on the ring spacer 5 (FIG. 1) side facing the FPC 3. .

  The second positioning portion P2 is a through-hole that engages with a protrusion provided on the holder 17 (FIG. 1), and forms a through-hole 3f that is shifted from the wiring area of the FPC 3 in the width direction W side. A support piece 3g that is harder and thicker than the FPC 3 is bonded to the FPC 3. In the protrusion 3c of the first positioning portion P1, the tip of the penetrating boss 1a is closed by the presser fitting 13 (FIG. 1), so that the boss 1a and the protrusion 3c can be reliably engaged during assembly. On the other hand, if the protrusion engaging with the through hole 3f of the second positioning portion P2 is short and the tip of the protrusion is a free end, it is easy to come out from the thin FPC 3, so that the support piece 3g having a predetermined thickness and hardness is formed. The through hole 3f is formed to enhance the retaining effect. In the case where a free end protrusion is used for engagement with the first positioning portion P1 (3c, 3d), it is desirable to form the same as the support piece 3g.

  The ring spacer 5 (FIGS. 1 and 3) has a disk shape with a smaller diameter than the base metal fitting 1. The ring spacer 5 in FIG. 1 is a perspective view on the main body cabinet side, and the ring spacer 5 in FIG. 3 is a perspective view on the viewfinder side (the surface facing the base metal fitting 1).

  The ring spacer 5 includes three positioning holes 5a (FIG. 3) through which the boss 1a passes, a ring-shaped engagement surface 5b (FIG. 1) in surface contact with the first norglide ring 7, and a positioning projection 5c. A bending hole 5d for bending and guiding the FPC 3 from the base metal fitting 1 side to the FPC pressing metal fitting 19 side, a sliding part 5e for sliding the holder 17, and a rotation center part 5f serving as a movement center of the FPC 3. Further, a guide groove 5g (FIG. 3) such as a wiring continuously extending in the outer peripheral direction from the rotation center portion 5f, and a plate-like wiring support member 5h (FIG. 3) for supporting the wiring and the like coming out of the guide groove 5g. ) And.

  The positioning projection 5c (FIG. 1) is a projection for restricting the rotation of the first and second norglide rings 7 and 11 and the presser fitting 13 which are concentrically overlapped in the circumferential direction. It is erected from a disk-shaped plane. At the time of assembly shown in FIG. 5, the positioning projection 5 c is engaged with the recesses 7 a, 11 a, 13 a provided at the same position on the inner ring side of the first and second norglide rings 7, 11 and the presser fitting 13. .

  The folding hole 5d (FIG. 1) has a substantially fan shape having a width and a length that allow the folded portion 3j (FIGS. 5 and 7) of the FPC 3 to freely move. The rotation center portion 5f is a through hole through which a wiring or the like can pass.

  The sliding portion 5e (FIG. 1) is a concave guide for guiding the moving direction when the holder 17 moves around the rotation center portion 5f. The sliding portion 5e has an intermittent cylindrical side surface and a ring-shaped bottom surface. However, the sliding portion 5e is not limited thereto, and may be any one that guides the movement of the holder 17 around the rotation center portion 5f. In order to reduce contact resistance, holes and depressions may be formed on the side surface and the bottom surface.

  FIG. 7 shows a schematic view when the FPC 3 is folded and the first and second positioning portions P1 and P2 are relatively moved. FIG. 7B shows a front view (f) and a side view (s) in a state where the bent portions 3a of the folded FPC 3 overlap each other, and FIG. 7 (a) shows the main body from the state of FIG. 7 (b). FIG. 7C is a front view in which the FPC 3 on the cabinet side terminal 3i side is rotated in the direction D1, and FIG. 7C shows the FPC 3 on the main body cabinet side terminal 3i side in the direction D2 from the state of FIG. FIG. FIG. 7C shows the end of the rotation direction D2.

  A region R1 surrounded by a broken line in FIG. 7C is a region that occupies the FPC 3 in a developed state (a region where the U-shaped opening end is closed), and is a non-occupied region of the folded FPC 3. Accordingly, since the FPC 3 does not interfere with the unoccupied region R1, the guide groove 5g of another wiring A is formed in the unoccupied region R1 of the ring spacer 5 (FIG. 3). In the present embodiment, in consideration of certainty and ease of design, the guide groove 5g of the ring spacer 5 is formed in a region corresponding to the unoccupied region R2 of the unfolded FPC 3 as shown in FIG.

  By forming the guide groove 5g in the non-occupied region R1 of the ring spacer 5 as described above, the degree of freedom of design is widened as compared with the case where the wiring cord that is output from the tilt rotation mechanism is always output from the rotation center portion 5f. The degree of freedom of the attachment positions of the connection terminals in the viewfinder and the main body cabinet is also increased, and as a result, the viewfinder and the main body cabinet can be reduced in size.

  The wiring support member 5h (FIG. 3) is located in the guide port 1c (FIGS. 1 and 2) of the base metal fitting 1 during assembly. In order to secure a space for guiding the wire A from the guide groove 5g to the outside of the base metal fitting 1 through the gap between the wire support member 5h and the guide port 1c, the radial length of the wire support member 5h is made shorter than the guide port 1c. ing.

  The first norglide ring 7 (FIG. 1) has a flat ring shape that comes into contact with the ring metal 9, increases the contact resistance with the ring metal 9, and makes contact with the ring metal 9 to facilitate torque adjustment. A fine file-like projection is provided on the surface 7b.

  The ring fitting 9 has a ring shape, and is formed by a ring-shaped rotating surface 9 a sandwiched between the first norglide ring 7 and the second norglide ring 11, an FPC presser fitting 19 and a screw 21. It has a screw fixing portion 9b that is fixed (screwed) and a connection portion 9c that is connected to a main body cabinet (not shown).

  The second norglide ring 11 has the same shape as the first norglide ring 7, and a surface provided with a fine projection in a file shape is brought into contact with the rotating surface 9 a of the ring metal fitting 9.

  The presser fitting 13 has a ring shape, together with a recess 13a that engages with the protrusion 5c of the ring spacer 5, a contact surface (not shown) that makes surface contact with the second norglide ring 11, and a boss 1a of the base metal fitting 1. It has three screw holes 13b screwed by screws 15 and a plurality of click stoppers 13c (FIG. 5).

  A plurality of click stoppers 13c are provided in the same diameter portion of the presser fitting 13, and are formed by click protrusions 19f provided in the FPC presser fitting 19 described later (through holes and depressions into which the vicinity of the tip of FIG. 69 enters. When the viewfinder and the main body cabinet are rotated relative to each other, when the vicinity of the tip of the click protrusion 19f enters the click stopper 13c, an interference sound (click sound) such as clicking, clicking, or clicking is generated, and the click protrusion 19f is clicked. 13c is stabilized by a pressing force by an elastic body such as a spring that is pressed to the side, and the turning force exceeding the pressing force is applied to the click protrusion 19f, so that the click protrusion 19f comes off from the click stop 13c, and the tilt Rotation can be continued, and the user can determine the predetermined angle and stability based on the click sound and the stable state. The interval between the click stop portions 13c can be arbitrarily determined according to the user's preference, usage mode, etc. Further, the generation of a click sound can be erased according to the user's preference, It can be set as the shape of the click stop part 13c made small.

  The base metal fitting 1, the FPC 3, the ring spacer 5, the first norglide ring 7, the ring metal fitting 9, the second norglide ring 11, and the holding metal fitting 13 are stacked in this order, and the screw hole 13b and the boss 1a are screwed with screws 15. In the state where the screw is screwed (FIGS. 1 and 5), the sliding portion 5e and the rotation center portion 5f of the ring spacer 5 are formed at a height protruding from the inside of the ring shape of the presser fitting 13.

  The holder 17 (FIGS. 1 and 4) is a sliding body that slides around the rotation center portion 5f in the sliding portion 5e of the ring spacer 5, and has an arch (arc) shape in the width direction. Yes. As shown in FIG. 4A, the holder 17 has an FPC support protrusion 17a, a support piece space 17b, a support piece space forming protrusion 17c, and a positioning engagement protrusion 17d on the surface facing the FPC presser fitting 19 during assembly. The two arch-shaped rails 17e (FIG. 4B) are formed on the surface facing the sliding portion 5e during assembly.

  The FPC support protrusion 17a is a protrusion that penetrates and engages the through hole 3f (FIG. 2) of the FPC 3. The support piece space 17b (FIG. 4) is a space that accommodates the support piece 3g (FIG. 2) forming the through hole 3f, and the support piece space forming protrusion 17c prevents the support piece 3g from sliding. In FIG. 5, the presser fitting 13 is stacked in order from the base metal fitting 1 and fixed with screws 15, and the FPC 3 is guided from the base metal fitting 1 side to the FPC presser metal fitting 19 side through the bent hole 5 d, and the FPC support protrusion 17 a is penetrated by the through hole. 3f is shown, and the support piece 3g is accommodated in the support piece space 17b.

  The positioning engagement protrusion 17 d (FIG. 4) is a protrusion for engaging with a through hole 19 c (FIGS. 1 and 6) provided in the FPC presser fitting 19 and positioning the holder 17 with respect to the FPC presser fitting 19. .

  The rail 17e (FIG. 4B) is formed with two thin, arch-shaped continuous protrusions in parallel in the sliding direction, and has a contact resistance in the sliding direction within the sliding portion 5e. Reduced to ensure smooth sliding.

  The FPC presser fitting 19 (FIG. 1) is connected to the screw 21 together with the FPC hole 19a for leading the main body cabinet side terminal 3i of the FPC 3 engaged with the holder 17 to the main body cabinet side, and the screw stopper 9b of the ring metal piece 9. And a through hole 19c that is an engaging portion that engages with the support piece space 17b (FIG. 4) of the holder 17, and a through hole 19d for heat dissipation and weight reduction (FIG. 6A). ), A click spring 19e for click (FIGS. 6A and 6B), and a click projection 19f (FIGS. 6A and 6B). FIG. 6 is a front view showing a state where the FPC presser fitting 19 is further screwed to the state shown in FIG.

  FIG. 6B is a side view of the click spring 19e and the click protrusion 19f portion of FIG. The click spring 19e is formed by projecting a band-shaped portion of a predetermined width of the main body portion of the FPC presser fitting 19 forming the FPC hole 19a, the through hole 19d, and the like into the presser fitting 13 side in a substantially U-shape or trapezoidal shape. ing. The click protrusion 19f is a protrusion portion in which a part of the click spring 19e is further recessed toward the presser fitting 13. The size of the click protrusion 19f is such that the vicinity of the tip enters the click stopper 13c. In the present embodiment, the click projection 19f on the main body cabinet side is provided with a ground function, and the ground on the viewfinder side that forms the presser fitting 13 on the receiving side is secured.

  Next, attachment of the tilt rotation mechanism will be described. As shown in FIG. 2, the viewfinder side terminal 3 h extends from the guide port 1 b of the base metal fitting 1 to the viewfinder side, and the through hole 3 d of the FPC 3 is passed through the boss 1 a of the base metal fitting 1.

  The other body side terminal 3i side of the FPC 3 is positioned and engaged with the base metal fitting 1 through the bending hole 5d of the ring spacer 5, and the holder 17 is overlapped on the ring spacer 5 from the first norglide ring 7. Engage.

  The curved portion 3a of the FPC 3 is folded back in the width direction W in the bending hole 5d, the support piece 3g is engaged with the support piece space forming projection 17c of the holder 17 provided on the ring spacer 5, and the FPC support projection 17a of the holder 17 is engaged. The through hole 3f of the FPC 3 is engaged through the engagement (FIG. 5), the FPC 3 body side terminal 3i is taken out from the FPC hole 19a of the FPC retainer 19, and the FPC retainer 19 is fixed to the ring bracket 9 with screws (FIG. 6). ) To assemble the tilt rotation mechanism.

  In the assembled tilt rotation mechanism, the base metal 1, the ring spacer 5, the first norglide ring 7, the second norglide ring 11, the presser metal 13, and the through hole 3 d of the FPC 3 that engages with the base metal 1. (Figure 2) moves in sync with the viewfinder.

  On the other hand, members that rotate in synchronization with the main body cabinet are the ring metal fitting 9, the FPC pressing metal fitting 19, the holder 17, and the through hole 3 f (FIG. 2) of the FPC 3 that engages with the holder 17.

  Therefore, when the main body cabinet is rotated with respect to the viewfinder, the ring metal fitting 9 fixed to the main body cabinet, the FPC presser metal fitting 19 fastened to the ring metal 9 and the holder 17 engaged with the FPC presser metal fitting 19 are obtained. Rotational force is transmitted, and the through hole 3f of the FPC 3 engaged with the holder 17 rotates in synchronization.

  As a result, when the viewfinder and the main body cabinet are relatively tilted and rotated, the through hole 3d of the FPC 3 engaged with the base metal fitting 1 and the through hole 3f of the FPC 3 engaged with the holder 17 are relatively located. As the through-holes 3d and 3f change in relative position, the folded portion 3j of the FPC 3 also moves in the folding hole 5d of the ring spacer 5 and the like, and the slack adjustment of the FPC 3 inside the tilt rotation mechanism is performed. Done automatically.

  In the present embodiment, the fixed portion of the FPC 3 that engages with a relatively tilting member (base metal fitting 1, holder 17) is a protruding portion 3c or a supporting piece 3g that protrudes outside the wiring area of the FPC 3. This reduces the burden on the wiring area, eliminates the possibility of damage to the wiring over time, and can greatly improve the product life.

  In addition, the fixed part of the FPC 3 and the part that relatively tilts and pivots are formed as a protruding part 3c that protrudes outside the wiring area of the FPC 3 and a through hole of the support piece 3g, so that the fixed part can be positioned and fixed easily and reliably. Can be. In addition, it is possible to reliably prevent the positional deviation between the relatively tilting member and the FPC 3.

  In addition, by providing a click function (generation of click sound, stability, rotation resistance, etc.) to the presser bracket 13 and the FPC presser bracket 19 that are relatively tilt-rotated, an approximate amount of rotation, a stable use angle, etc. Can be known to the user with a simple configuration. In this embodiment, the press fitting 13 is provided with a click stopper 13c (FIG. 5), and the FPC press fitting 19 is provided with a click spring 19e and a click projection 19f. A click protrusion may be provided, and a click stop portion may be provided on the FPC presser fitting 19.

  Further, by providing the presser fitting 13 having the click function and the FPC presser fitting 19 with an earth function, it is possible to easily secure the earth between the devices that relatively rotate and tilt.

  Moreover, by providing the through hole 19d for heat dissipation and weight reduction in the FPC presser fitting 19, heat resistance can be improved, and user operability (usage time, age group for use) can be improved by weight reduction.

  Further, by forming the guide groove 5g in the non-occupied region R1 of the ring spacer 5, the degree of freedom is widened as compared with the case where the wiring cord or the like output from the tilt rotation mechanism is always output from the rotation center portion 5f. The degree of freedom of the attachment position of the connection terminal in the main body cabinet is also increased, and as a result, the viewfinder and the main body cabinet are reduced in size.

  Further, by providing the holder 17 that engages the through hole 3f of the FPC 3 in the sliding portion 5e, the rotation direction is determined, and smooth tilt rotation can be realized. In the present embodiment, the sliding portion 5e (ring spacer 5) and the holder 17 are made of plastic in order to improve the slidability, and the holder 17 is a separate member from the metal FPC presser fitting 19 that requires strength. However, it may be formed of a metal integrally with the same member as the FPC presser fitting 19.

  The tilt rotation mechanism of the present embodiment can be used for an apparatus that requires electrical connection as well as mechanical tilde rotation connection. For example, the viewfinder and main body cabinet of the camera-integrated image display apparatus can be used. It can be used for a connecting portion, a connecting portion between a camera and a display portion, or the like.

  The tilt rotation mechanism of this embodiment can be used for an apparatus that requires electrical connection as well as mechanical chilled rotation connection. For example, a connection part between a viewfinder of a camera-integrated image display apparatus and a main body cabinet It can also be used for a connecting portion between a camera and a display portion.

It is a disassembled perspective view of the tilt rotation mechanism which concerns on embodiment of this invention. It is explanatory drawing of the base metal fitting 1 and FPC3 which concern on embodiment of this invention. It is a perspective view of the back surface side of the ring spacer 5 which concerns on embodiment of this invention. They are the perspective view (a) of the front side of the holder 17 which concerns on embodiment of this invention, and a back surface side perspective view (b). It is assembly explanatory drawing of the tilt rotation mechanism which concerns on embodiment of this invention. It is assembly explanatory drawing (a) of the tilt rotation mechanism based on embodiment of this invention, and explanatory drawing (b) of the click spring 19e for a click, and the click protrusion 19f. It is explanatory drawing of FPC3 accompanying the tilt rotation which concerns on embodiment of this invention. It is a disassembled perspective view of the conventional tilt rotation mechanism. It is a disassembled perspective view of the conventional tilt rotation mechanism. It is a disassembled perspective view of the conventional tilt rotation mechanism. It is a disassembled perspective view of the conventional tilt rotation mechanism.

Explanation of symbols

1 Base metal fitting 1a Boss 3 Flexible printed circuit board (FPC)
L Electrical wiring direction 3a Curved portion 3b Start point vicinity P1 First positioning portion 3c Protruding portion 3d Through hole 3e End point vicinity P2 Second positioning portion 3f Through hole 3g Support piece 3j Fold 5 Ring spacer 9 Ring bracket 13 Press bracket 13c Click stop 17 Holder 17a FPC support protrusion 19 FPC presser fitting 19e Click spring (elastic member)
19f Click projection

Claims (6)

A flexible printed circuit board that electrically connects between the non-opposing surface sides of the first and second rotating members through the relatively rotatable first and second rotating members. A tilt rotation mechanism having
The flexible printed circuit board includes an arcuate curved portion along a wiring direction, a first fixing portion on one end side of the bending portion, a second fixing portion on the other end side of the bending portion, Have
The first rotating member has a first engagement shaft that engages with the first fixing portion,
The second rotating member has a second engagement shaft that engages with the second fixing portion,
The first and second fixing portions are shaft engaging portions formed in a portion other than the wiring portion of the flexible printed circuit board,
The tilt rotation mechanism characterized in that the first and second fixing portions engage with the first and second engagement shafts in a state in which the bending portion is folded back in a normal direction. The first rotating member includes a spacer that is sandwiched between the flexible printed circuit boards in a folded state and has a ring-shaped sliding portion having a size including the curved portion,
The second rotating member has a holder that can slide in the sliding portion,
The tilt rotation mechanism according to claim 1, wherein the second engagement shaft is formed on the holder. The first rotating member has a plurality of click spaces in the same circumference,
2. The tilt rotation mechanism according to claim 1, wherein the second rotation member includes an elastic portion having a click protrusion that engages with the space at the same circumferential position.   The tilt rotation mechanism according to claim 3, wherein the click projection is grounded.   The spacer has a non-occupied region of the flexible printed circuit board in a folded state, passes between the first and second rotating members, and the non-occupying area of the first and second rotating members. The tilt rotation mechanism according to claim 2, wherein a guide groove that allows a connection member that connects the opposing surfaces to pass is formed.   The tilt rotation mechanism according to claim 1, wherein an opening is formed in at least one of the first and second rotation members.

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