JP3937501B2 - Electronics - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic apparatus suitable for application to, for example, a video camera device equipped with an external liquid crystal display panel, and more specifically, the liquid crystal display panel is turned upright with respect to the video camera main body, and further turned. By reducing the size of the hinge mechanism for reducing the size of the hinge mechanism, the entire apparatus can be made compact.
[0002]
[Prior art]
Conventionally, as an example of a video camera apparatus provided with this type of liquid crystal display panel, there is a video camera previously proposed by the present applicant in Japanese Patent Application No. 6-281522. This will be described with reference to FIG.
[0003]
In FIG. 12, a liquid crystal display panel 61 is disposed on one side surface of the video camera main body, indicated as a whole by reference numeral 60. The liquid crystal display panel 61 is coupled to the video camera body 60 by a hinge mechanism 62 and is housed in a housing 60a formed in the video camera body 60 with the panel display surface facing away. Reference numeral 63 denotes an electronic viewfinder mounted on the video camera body 1.
[0004]
As shown in FIG. 13, the liquid crystal display panel 61 configured as described above is configured to watch an image displayed on the panel display surface 61a of the liquid crystal display panel 61 in a state where the hinge mechanism unit 62 is erected and pivoted to the upright position. While shooting video.
[0005]
Further, the liquid crystal display panel 61 can be rotated 180 ° from the state shown in FIG. 13 around the hinge mechanism 62 as a rotation center. Therefore, in this state, the panel display surface 61a faces the photographing side. You can shoot video while showing images.
[0006]
Further, by storing and using the liquid crystal display panel 61 in the storage section 60a of the video camera main body section 60 with the panel display surface 61a facing up, with the liquid crystal display panel 61 turned upside down, the video playback image is displayed on the liquid crystal display panel 61. You can also see it on the screen.
[0007]
The video camera device configured as described above is a novel video camera device that can improve the visibility of the liquid crystal display panel and can be used in various usage modes of the video camera.
[0008]
[Problems to be solved by the invention]
However, there is room for improvement with respect to the hinge mechanism 62 for rotating the liquid crystal display panel 61 in a standing manner or performing a reverse operation. The hinge mechanism 62 is a first rotation mechanism for rotating the liquid crystal display panel 61 between the upright position and the storage position, and a second for rotating the liquid crystal display panel 61 in the upright position. It comprises a so-called biaxial hinge mechanism having a rotation mechanism.
[0009]
This is the two-axis hinge mechanism is pivotable operation in a state where the liquid crystal display panel 61 is erected operation in the storage position and an upright position, also other than the liquid crystal display panel 61 is erected operates the accommodated position and the upright position described above middle A cam member is disposed for making it impossible to turn in the operating state.
[0010]
Since this cam member is formed by bending a sheet metal, it becomes a relatively large part, and the size of the entire biaxial hinge mechanism must be increased. Therefore, when the depth length of the video camera device is shortened, the screen size of the liquid crystal display panel has to be reduced, and the height of the biaxial hinge mechanism is increased. There is a problem that the size of the direction inevitably increases.
[0011]
Further, the cam member described above needs to be attached to the video camera main body via a bracket, which is a separate member, and there are flat parts on both sides facing the tip of the rotating shaft that engages with the cam member. There is also a problem that the number of parts increases and the cost increases accordingly.
[0012]
The present invention has been made to solve the above-described problems, and can reduce the number of parts together with the miniaturization of the biaxial hinge mechanism. An object of the present invention is to obtain a suitable electronic device by applying to a biaxial hinge mechanism of a liquid crystal display panel such as a video camera device.
[00113]
[Means for Solving the Problems]
In order to achieve the above-described object, an electronic device according to the present invention has a first rotating means for raising and rotating a display body from a stored state, and the display body is rotated around the rotation axis by the first rotating means. A biaxial hinge mechanism comprising a second rotating means to be operated is provided, and the cam shaft at the tip of the rotating shaft of the second rotating means is engaged with a cam groove formed in the bracket of the first rotating means. make. Further, the biaxial hinge mechanism has a flat shaft shape in which the cam shaft is processed at the tip of the rotating shaft, and the cam groove has an expanded cam groove shape in which the cam shaft can rotate at both ends thereof. The camshaft is a passage-shaped cam with a width that allows the flat shaft side of the camshaft to pass, and the bracket is composed of a pair of bearing plates and a connecting frame that connects the bearing plates, and the cam groove is connected to the connecting frame integrally. Each of the bearing plates has a bearing hole, and a movable frame is supported by the bearing hole .
[0014]
With this configuration, when the display body is in the stowed and upright position, the camshaft can rotate in the cam groove, and the camshaft is restricted to the cam groove when the display body is in a rotating position other than the stowed and upright position. It becomes impossible to turn.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of an electronic apparatus according to the present invention will be described below with reference to the drawings, taking a video camera apparatus having a liquid crystal display panel as an example.
[0016]
FIG. 1 is an external perspective view of the video camera device according to the present embodiment in a state where a liquid crystal display panel is not used.
[0017]
In FIG. 1, a liquid crystal display panel 2 that is a display body is disposed on one side of a video camera main body 1 that is an electronic device main body . The liquid crystal display panel 2 is coupled to the video camera body 1 by a biaxial hinge mechanism 3 and is housed in a housing 1a which is a display body housing formed on the video camera body 1 with the panel display surface facing back. ing. Incidentally, 4 is an electronic view finder mounted on the video camera body 1, 5, a camera mechanism of a front lens, 6 a battery as a power supply.
[0018]
2 is a configuration diagram in which the video camera main body 1 and the liquid crystal display panel 2 are coupled by a biaxial hinge mechanism 3. FIG. 3 is an exploded perspective view of the biaxial hinge mechanism 3. FIG. 4 is a biaxial hinge. FIG. 5 is a front view showing the assembled state of the mechanism unit 3 and FIG.
[0019]
Details of the biaxial hinge mechanism 3 will be described.
A frame 11 that is a connecting frame is connected between a pair of first brackets 10 and 10 serving as bearing plates by caulking and fixing claw portions 11a and 11a (only one side is visible) at both ends thereof. Both brackets 10, 10 have mounting plates 12, 12. Both brackets 10 and 10 have bearing holes 13 and 13, and a U-shaped movable frame 14 is supported by the bearing holes 13 and 13.
[0020]
A torque generating seat 15 is attached to the inner surface of one bracket 10. This torque generating seat collar 15 has notches 16 and 16 and a plurality of projections 17 projecting short to the inner peripheral side. The notches 16 and 16 are fitted to the convex surfaces 10a and 10a projecting from the bracket 10, The shaft hole 15 a is fixed so as to communicate with the bearing hole 13. Then, one bearing piece 18 of the movable frame 14 is positioned on the torque generating seat 15, and a washer 19, two corrugated washers 20, 20 and a washer 21 are stacked on the inner surface side of the bearing piece 18. Each shaft hole 21a, 20a, 20a, 19a penetrates the shaft pin 22, and further, the shaft hole 18a of one bearing piece 18 of the movable frame 14, the shaft hole 15a of the torque generating seat 15 and the bearing hole of the bracket 10. 13 and the end of the shaft pin 22 is fixed by caulking. At this time, a plurality of cutout holes 18 b formed around the bearing pieces 18 of the movable frame 14 are made to correspond to the projections 17 of the torque generating seat spring 15.
[0021]
In the bearing hole 13 of the other bracket 10, a caulking shaft 24 a on the outer side of the flange portion 23 is fixed by caulking from the inner surface side, and the other bearing piece 18 of the movable frame 14 is fixed to the shaft pin 24 protruding inside the flange portion 23. The shaft hole 18a is supported.
[0022]
Thus, the movable frame 14 constitutes a first rotating mechanism that rotates about the shaft pins 22 and 24 with respect to the brackets 10 and 10 by the bearing structure described above.
[0023]
On the other hand, a spring receiver 25 is disposed at the center on the inner surface side of the movable frame 14, and a recess 25 a formed on the upper portion of the spring receiver 25 is positioned and held on the flange 26 of the movable frame 14. A substantially arch-shaped torque generating plate spring 27 is attached to the spring receiver 25 by engaging the leg portions 27 a and 27 a at both ends thereof with the grooves 28 and 28 of the movable frame 14. Convex portions 29 and 29 are provided at the center of the torque generating leaf spring 27 in the vertical direction.
[0024]
Reference numeral 30 denotes a rotating shaft that is supported by the movable frame 14 described above, and the rotating shaft 30 is formed with a cam shaft 31 whose front end portion is machined into a flat shape at the front portion of the flange 30a. The rear portion of the flange 30 a is processed into a flat shape in a horizontal shape, and is provided on a shaft portion 32 that is thicker than the cam shaft 31. A click-generating washer 33 can be inserted into the shaft portion 32 in a non-rotatable manner. Four groove portions 34 are formed around the click-generating washer 33 in the vertical and horizontal directions, and one stopper portion 34a is formed at an oblique position. Yes.
[0025]
Thus, the square hole 33a of the click generating washer 33 is inserted into the shaft portion 32 of the rotating shaft 30 to make it non-rotatable, and the shaft portion 32 is made into the above-described window hole 27b of the torque generating spring 27 and the opening hole 25b of the spring receiver 25. Through the opening hole 14a of the movable frame 14.
[0026]
Then, the shaft portion 32 penetrating the opening hole 14a of the movable frame 14 is supported by a bearing tube portion 36 of a cover mounting frame 35 formed from a resin mold member disposed on the back side of the movable frame 14, and this cover In the mounting frame 35, convex portions 35a and 35a protruding from the inner surface side thereof are positioned in the positioning holes 14b and 14b of the movable frame 14, and screws 37 and 37 inserted from the through holes 35c and 35c of the cover mounting frame 35 are movable. The screw holes 14c and 14c of the frame 14 are fixed by screwing.
[0027]
Further, a mounting hole 39a of a flange 39 formed in a second bracket 38 for supporting a liquid crystal display panel to be described later is fixed by caulking to a caulking shaft 32a of the shaft portion 32 protruding from the bearing tube portion 36 of the cover mounting frame 35. The
[0028]
Thus, the movable frame 14 constitutes a second rotating mechanism in which the second bracket 38 is turned together with the rotating shaft 30.
[0029]
Here, the first and second rotation mechanisms described above are protected by the combined upper cover 40 and lower cover 41 except for the first brackets 10 and 10. Four leg pieces 42 (only two leg pieces are visible in FIG. 3) extend to the upper cover 40, and an engaging claw 42a is formed at the tip. The upper cover 40 is positioned by engaging convex portions (not shown) formed on the inner surface thereof with the engagement holes 35 d and 35 d of the cover mounting frame 35.
[0030]
The lower cover 41 has pins 43 and 43 formed on the inner surface thereof, and the pins 43 and 43 are engaged and positioned in the engagement holes 44 and 44 of the cover mounting frame 35.
[0031]
When the upper cover 40 and the lower cover 41 are positioned, when both covers are combined, the engaging claws 42a of the upper cover 40 can be engaged with the engaging portions 45 of the lower cover 41 and integrated. Further, the covers 40 and 41 have halved tube covers 46 and 47, respectively, and the bearing tube portion 36 of the cover mounting frame 35 is protected by the tube covers 46 and 47 in the combined state of both covers.
[0032]
In FIG. 3, the pair of engaging claws 48 projecting from the lower surface of the cover mounting frame 35 is for fixing a power-on / off microswitch body (not shown). Because it is not, it is omitted here. In addition, cam surfaces 49 and 49 are formed on the outer edges of the cylinder covers 46 and 47 for reversing the liquid crystal display image built in the liquid crystal display panel.
[0033]
Now, in the biaxial hinge mechanism configured as described above, the cam shaft 31 at the tip of the second rotating mechanism corresponds to the frame 11 connecting the first brackets 10 and 10 described above. The frame 11 has an arc surface shape centered on the rotation center of the first rotation mechanism, that is, the bearing hole 13 of the first bracket 10, and a cam groove 50 is provided on the inner surface of the frame 11. . The cam groove 50 is a semicircular first cam groove 51a and a second cam groove 51b in which the cam shaft 31 can freely rotate at both upper and lower ends, and between the cam grooves 51a and 51b, A cam groove 51c having a width through which a flat portion of the cam shaft 31 passes is formed.
[0034]
In the biaxial hinge mechanism configured as described above, the first brackets 10 and 10 are screwed to the video camera main body 1 using the screw holes 12a of the mounting plates 12 and 12, and the second bracket 38 is used. The liquid crystal display panel 2 is screwed using the screw holes 38a.
[0035]
Next, the operation of the biaxial hinge mechanism will be described including the development of the cam groove 50 shown in FIG.
[0036]
1 and 2 show a state in which the panel display surface 2a side of the liquid crystal display panel 2 is set inside and is stored in the storage portion 1a of the video camera main body 1.
[0037]
In the storage state of the liquid crystal display panel 2, the cam shaft 31 at the tip of the second rotation mechanism is positioned in the first cam groove 51a in the direction indicated by the solid line. Accordingly, the liquid crystal display panel 2 can be pivoted around the second rotation mechanism in the first cam groove 51a, but the liquid crystal display panel 2 is stored in the storage portion 1a. Therefore, it is not necessary to turn.
[0038]
7 and 8 show a state in which the liquid crystal display panel 2 is turned upright to the upright position to enable video shooting while viewing an image displayed on the panel display surface 2a. That is, when the liquid crystal display panel 2 is erected and rotated with the first rotation mechanism as a rotation fulcrum, the cam shaft 31 of the second rotation mechanism passes from the first cam groove 51a through the passage-shaped cam groove 51c. It will move into the second cam groove 51b. For this reason, at the turning position where the liquid crystal display panel 2 does not stand up completely, the cam shaft 31 is positioned in the passage-like cam groove 51c, so that the second turning mechanism is prevented from turning, and the liquid crystal display panel. 2 turning operation is impossible. Further, in the pivoting operation of the first pivoting mechanism, a predetermined torque is generated by the action of the torque generating seat spring 15 and the waveform washer 20, thereby enabling an operation that responds to the standing pivoting of the liquid crystal display panel 2. Yes.
[0039]
FIG. 9 shows a state in which the liquid crystal display panel 2 is turned by 180 ° from the upright position, and video shooting is enabled while showing an image displayed on the panel display surface 2a to the subject. That is, since the cam shaft 31 is positioned in the second cam groove 51b at the upright position of the liquid crystal display panel 2, the second rotation mechanism can rotate about the rotation shaft 30 and the liquid crystal display. The panel 2 can be turned. At this time, the swiveling operation of the liquid crystal display panel 2 is performed by a click action every 90 ° swiveling operation because the groove portion 34 of the click generating washer 33 and the convex portion 29 of the click generating leaf spring 27 are spring-engaged. At the same time, a turning operation with a response is possible.
[0040]
Further, the turning direction of the liquid crystal display panel 2 can be turned 180 ° by turning the liquid crystal display panel 2 upward, and the stopper 34 a formed on the click-generating washer 33 at a turning angle slightly exceeding 180 ° is provided with the movable frame 14. It is regulated to stop against the flange 26. Further, when turning downward, the stopper 34 a of the click generating washer 33 is restricted to abut against the flange 26 of the movable frame 14 and stop in a downward state.
[0041]
Thus, the liquid crystal display panel 2 is stored in the storage portion 1a with the display panel surface 2a facing forward as shown in FIG. 10 in the swiveled state shown in FIG. 9, and the video taken is displayed on the display panel surface 2a. You can play and watch. That is, when the liquid crystal display panel 2 is stored, the cam shaft 31 is positioned in parallel with the passage-shaped cam groove 51c in the second cam groove 51b at the turning operation position of the liquid crystal display panel 2. Then, the cam shaft 31 passes through the passage-like cam groove 51c and again moves into the first cam groove 51a. In this case as well, at the turning position where the liquid crystal display panel 2 is not completely stored, the cam shaft 31 is positioned in the passage-like cam groove 51c, so that the rotation of the second turning mechanism is prevented. The turning operation of the display panel 2 becomes impossible.
[0042]
Further, in FIG. 10, the liquid crystal display panel 2 is in a state in which the liquid crystal display panel 2 can be swung. Therefore, by rotating the liquid crystal display panel 2 slightly upward in the storage position as shown in FIG. The visibility when reproduced and viewed in 2a can be improved.
[0043]
As described above, according to the present invention, the cam groove 50 is formed using the frame 11 constituting the first rotation mechanism, and the cam shaft 31 engaged with the cam groove 50 is moved to the second rotation. Since the tip end portion of the rotating shaft 30 of the moving mechanism is formed by the cam shaft 31 processed flat, the number of parts can be reduced, and the cost can be reduced as well as the assemblability of the biaxial hinge mechanism.
[0044]
In particular, since the biaxial hinge mechanism can be miniaturized, the screen size of the liquid crystal display panel 2 can be increased by reducing the depth direction of the biaxial hinge mechanism. Since the height of the mechanism has been lowered, it has become possible to make the video camera device thinner.
[0045]
Further, since the first rotation mechanism and the second rotation mechanism can be accommodated in the halved covers 40 and 41, the biaxial hinge mechanism can be assembled as one unit, Therefore, the assembling property to the video camera device can be improved.
[0046]
The present invention is not limited to the form described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention.
[0047]
In the example of the present invention, the case where the liquid crystal display panel 2 can correspond to various usage modes by the biaxial hinge mechanism with respect to the video camera main body 1 of the video camera device has been described. The present invention can also be widely applied to a biaxial hinge mechanism portion of an electronic device main body and its display body.
[0048]
【The invention's effect】
As described above, the electronic device according to the present invention enables the miniaturization of the biaxial hinge mechanism, and the screen size of the display body can be increased as much as the size in the depth direction of the biaxial hinge mechanism can be reduced. In addition, since the height size of the biaxial hinge mechanism is reduced, the electronic device main body can be thinned.
[0049]
Further, the number of parts of the biaxial hinge mechanism is reduced, and the cost can be reduced as well as the assemblability.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a liquid crystal display panel in a non-use state in a video camera device as an example of an electronic apparatus of the present invention.
FIG. 2 is an operation diagram of a biaxial hinge mechanism when the liquid crystal display panel is not in use.
FIG. 3 is an exploded perspective view of a biaxial hinge mechanism.
FIG. 4 is a plan view of the assembled state of the biaxial hinge mechanism.
FIG. 5 is a front view of the assembled state of the biaxial hinge mechanism.
FIG. 6 is a development view of a cam groove and a cam shaft.
FIG. 7 is an external perspective view of a video camera device in a state where a liquid crystal display panel is rotated to an upright position.
FIG. 8 is an operation diagram of a biaxial hinge mechanism portion in an upright position of a liquid crystal display panel.
FIG. 9 is an external perspective view of a video camera device in a usage mode in which a display surface of a liquid crystal display panel is reversed.
FIG. 10 is an external perspective view of a storage state in which a display surface of a liquid crystal display panel is reversed.
FIG. 11 is an external perspective view of a video camera device according to one usage mode in which a display surface of a liquid crystal display panel is reversed.
FIG. 12 is an external perspective view of a conventional video camera device.
FIG. 13 is an external perspective view of a conventional video camera device in a state in which a liquid crystal display panel is rotated.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Video camera main-body part, 2 Liquid crystal display panel, 2a Panel display screen, 3 2-axis hinge mechanism, 10 1st bracket, 11 frame, 14 movable frame, 15 Torque generating seat spring , 20 Wave washer, 22, 24 axis Pin, 25 Spring receiver, 27 Torque generating leaf spring, 30 round shaft, 31 Cam shaft, 33 Click generating washer, 35 Cover mounting frame, 38 Second bracket, 40 Upper cover, 41 Lower cover, 50 Cam groove, 51a First cam groove, 51b Second cam groove, 51c Passive cam groove

Claims (7)

First rotating means for rotating the display body upright from the display body housing part on one surface of the electronic device main body part, and the display body is rotated in a reversible manner on the front and back surfaces at the upright position. an electronic apparatus having a biaxial hinge mechanism having a second pivot means,
The first rotating means is supported by a bracket fixed to the electronic apparatus main body, and upright pivot the movable frame with said second pivot means,
The second pivot means has an axis of rotation to a bracket that supports the display body, the rotary shaft turning operation the display body is rotatably supported to the movable frame about said rotational axis ,
A cam shaft at a tip portion of the rotating shaft, and a cam groove having an arcuate surface engaged with a part of the bracket along a locus in which the cam shaft is raised and rotated by the first rotating means;
In the biaxial hinge mechanism, when the display body is in the stowed and upright position, the camshaft is not restricted by the cam groove, and the display body can be swiveled. A cam mechanism in which the cam shaft is restricted by the cam groove in the moving position and the display body cannot be turned;
Further, the biaxial hinge mechanism has a flat shaft shape in which the cam shaft is processed at a tip portion of the rotating shaft, and the cam groove has an expanded cam groove shape in which the cam shaft can rotate at both ends. There is a passage-like cam shape having a width through which the flat shaft side of the cam shaft passes in the middle of the cam groove,
The bracket includes a pair of bearing plates and a connecting frame that connects the bearing plates, and the cam groove is configured as a part of the connecting frame integrally with the connecting frame,
An electronic apparatus , wherein each of the bearing plates has a bearing hole, and the movable frame is supported by the bearing hole . The electronic device according to claim 1,
An electronic apparatus, wherein the first rotating means includes a torque mechanism having a predetermined torque force. The electronic device according to claim 1,
The electronic device according to claim 1, wherein the second rotating means includes a click mechanism for positioning the display body at every 90 ° turning angle. The electronic device according to claim 1,
The electronic device according to claim 2, wherein the second rotating means includes a stopper mechanism for restricting unnecessary turning motion of the display body. The electronic device according to claim 1,
An electronic apparatus, wherein the first rotating means, the second rotating means, and the cam mechanism are housed in one cover. The electronic device according to claim 1,
An electronic apparatus, wherein the cam groove is formed integrally with the bracket. The electronic device according to claim 1,
The electronic apparatus is a video camera device, and the display body is a liquid crystal display panel.

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