JP3780964B2 - Electronics - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic device including a display body at a predetermined position on an upper surface of a case body.
[0002]
[Prior art]
Conventionally, some electronic parts such as a liquid crystal display or a display unit or an operation panel are rotatably attached to the case body. In such a case, it is necessary to arrange and connect the electronic parts to the case body side. is there. An example of such a technique is disclosed in Japanese Utility Model Laid-Open No. 60-122989. Japanese Utility Model Laid-Open No. 60-122989 discloses a rotating shaft that pivotally supports an operation panel on a musical instrument body.
[0003]
[Problems to be solved by the invention]
Such a conventional technique can also be applied to a display body such as a display device, but since the wiring is passed through the rotating shaft portion, the shaft portion becomes thicker, and a portion protruding above the panel (instrument body) can be made. End up. Further, when the wiring cable is exposed, not only the appearance is deteriorated, but a finger is entangled with the wiring cable when the display body is turned upright.
[0004]
The present invention provides an electronic device including a display body rotatably disposed at a predetermined position on the upper surface of a case body, and improves the wiring process of a wiring cable from the display body, which is good-looking and safe. It is an object to perform wiring processing.
[0005]
[Means for Solving the Problems]
The electronic apparatus according to claim 1 of the present invention includes a case body, a display body with a rotatably disposed a cover on the upper surface of the case body, the one of the display body and the other times in the case body side It is fixed at a distance from the pivot shaft, and a optional angle holding mechanism for rotating and held at any angle relative to the rotation of the display member to at least one direction, from the display body to the cover of the display body An extension portion extending in the case body is provided, and one of the arbitrary angle holding mechanisms is fixed to the extension portion, and a wiring cable from the circuit portion of the display body is routed through the extension portion. And the extended portion covers the wiring cable in the entire range of the arbitrary angle.
[0006]
According to the electronic apparatus of the first aspect configured as described above, the wiring cable is not exposed to the outside of the case body, the appearance is good, and the safe wiring process that is hardly broken is achieved. That is, the extending portion covers the entire range of the display body from standing upright so that the cable cannot be seen, and functions to bring the arbitrary angle holding mechanism inside the case body.
[0007]
As a preferred form of the electronic device of the present invention, a storage recess for storing the display body may be provided on the upper surface of the case body, and the display body may be fitted and stored in the storage recess. Thereby, when the display body is stored, the display body does not protrude from, for example, the operation panel surface on the upper surface of the case body, and the operation panel surface becomes smart.
[0008]
Further, in the case of having the above-mentioned storage recess, the display body is rotated around the rotation fulcrum part of the display body, and the extended part of the cover of the display body is provided in the vicinity of the fulcrum part in the direction intersecting the rotation fulcrum part, When the display body is stored, a wiring cable may be disposed inside the case body from the storage recess through an opening provided in the storage recess. Thereby, the wiring space of the wiring cable can be secured without difficulty.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 3 is a perspective view of a main part of the keyboard-type electronic musical instrument (electronic device) according to the embodiment, and shows a state in which a substantially central portion of the electronic musical instrument is viewed from the rear side. In this electronic musical instrument, the performer side (keyboard side) at the time of performance is “front” or “front”, the opposite side is “rear” or “rear”, and “left and right” means the electronic instrument In the upright state, it is set to the right and left from the front. The main body case of the electronic musical instrument is composed of a synthetic resin upper case (case body) 1 and a lower case (not shown), and the upper surface of the upper case 1 has a surface behind the keyboard 10 and an operation panel surface 11. It has become. A large number of operation switches 20 such as a timbre selection switch and various function switches are disposed on the operation panel surface 11, and a storage recess 12 is formed in a part of the operation panel surface 11.
[0010]
The storage recess 12 has a rectangular planar shape and a uniform depth with a taper on the left and right sides, and is formed from the middle of the operation panel surface 11 to the rear panel 13 on the rear side. A display body 2 as a movable body is disposed in the storage recess 12. The display body 2 is pivotally supported by a hinge mechanism, which will be described later, inside the front side of the housing recess 12 and is rotatable in the front-rear direction with the left-right direction as a rotation axis. Further, on the back surface of the cover 21 of the display body 2, an extended portion 211 described later is formed integrally with the cover 21, and a large gear 212 that engages with a torque mechanism (friction mechanism) described later is attached. .
[0011]
An engagement claw 121 is disposed at the center rear end of the storage recess 12, and an engagement portion 22 that is detachable from the engagement claw 121 is formed at the center upper end of the display body 2. When the body 2 is tilted rearward and stored in the storage recess 12, the engaging portion 22 engages with the engaging claw 121, and the display body 2 is fixed to the upper case 1. Further, by operating the protrusion 221 of the engaging portion 22, the engaging portion 22 is released from the engaging claw 121 and the display body 2 can be raised.
[0012]
FIG. 4 is a perspective view showing a main part on the back surface side of the upper case 1, and shows a state viewed from the lower front part of the electronic musical instrument. In the figure, the display body 2 is housed in the housing recess 12. A rectangular trapezoidal bulging portion 12R corresponding to the storage recess 12 is formed on the back side of the upper case 1, and the first print is on the left side (right side of the electronic musical instrument) of the bulging portion 12R. A substrate 301 is disposed, a second printed circuit board 302 is disposed in front of the bulging portion 12R, and a third printed circuit board 303 is disposed on the right side (left side of the electronic musical instrument) of the bulging portion 12R. It is arranged. In addition, a contact portion 14 that contacts a boss of a lower case (not shown) is formed on the back surface of the back panel 13 and other predetermined locations. The contact portion 14 and the boss of the lower case are connected from the lower case side. The upper case 1 and the lower case are united by screwing.
[0013]
Hinges 31 of the hinge mechanism 3 which will be described in detail later with reference to FIGS. 5 and 6 are attached to two locations on the front left and right ends of the bulging portion 12R (the back surface of the housing recess 12). Further, a rectangular opening 12a is formed in the vicinity of the second printed circuit board 302 at the center of the bulging portion 12R, and the extending portion 211 of the display body 2 is penetrated through the opening 12a. Further, a torque mechanism 4 is formed between the opening 12a and one hinge mechanism 3 in the bulging portion 12R. The torque mechanism 4 includes a friction generator 41 that is fixed to the bulging portion 12R and generates rotational friction, and a pinion 42 that is fixed to the shaft of the friction generator 41. The pinion 42 includes a large gear of the display body 2. 212 is engaged. When the large gear 212 tries to rotate together with the rotation of the display body 2, a frictional force acts on the rotation of the pinion 42 by the friction generator 41, and the gear ratio between the large gear 212 and the pinion 42 is large. Resistance is added to the rotational force of the body 2. This resistance is such that the display body 2 rotates slowly when it rotates by its own weight. The torque mechanism can be realized by a rotating means of a metal shaft and a rubber body that wraps the metal shaft, or an oil damper mechanism.
[0014]
An arbitrary angle holding mechanism 5 is disposed at the center of the bulging portion 12R (the back surface of the housing recess 12). The arbitrary angle holding mechanism 5 is fitted to the two lock mechanism blocks 51 and 51 disposed in parallel with each other behind the opening 12a in the bulging portion 12R, and one end of the lock mechanism blocks 51 and 51 is fitted to the lock mechanism blocks 51 and 51, respectively. The other end is constituted by a link member 52 connected to the end portion 211 a of the extending portion 211 of the display body 2. The two lock mechanism blocks 51, 51 are formed in a mirror image symmetrical shape with synthetic resin, and are provided with guide grooves 511 which will be described in detail later with reference to FIGS. The link member 52 is made of metal, and is configured by fixing a guide pin 522 to one end of the link 521 and connecting a fixing plate 523 to the other end of the link 521 by a hinge 524. The fixing plate 523 is fixed to the end portion 211 a of the extending portion 211, and the guide pin 522 is fitted in the guide groove 511 of the lock mechanism blocks 51 and 51.
[0015]
5 and 6 are sectional views showing the hinge mechanism 3. 4 corresponds to the cross-sectional view taken along the line A-A in FIG. 4, FIG. 5 shows a state in which the display body 2 is housed in the housing recess 12, and FIG. 6 raises the display body 2 from the housing recess 12. Indicates the state. The hinge 31 of the hinge mechanism 3 is configured by connecting a rotating plate 31a and a fixed plate 31b with a shaft 31c. The lower end portion of the cover 21 of the display body 2 has an arcuate cross section, and openings 21a are formed at two positions on the left and right sides of the cover 21 (positions corresponding to two sets of hinge mechanisms). A boss 21b is formed in the vicinity of the opening 21a inside the cover 21, and a rotating plate 31a of a hinge 31 is screwed to the boss 21b. A boss 12R-1 is formed at the front end of the bulging portion 12R of the upper case 1 (the back surface of the housing recess 12), and a fixing plate 31b of a hinge 31 is screwed to the boss 12R-1.
[0016]
As described above, the hinge mechanism 3 is a hinge mechanism that rotatably holds the display body 2 on the operation panel surface 11, and the shaft 31c and the rotation plate 31a are provided inside the cover 21, and one end thereof is fixed to the cover. A fixing plate 31b having the other end protruding from the cover 21 is provided to extend, and the fixing plate 31b is fixed to the case body 1 from the inside of the case body 1. The display body 2 rotates about the axes 31c and 31c of the hinges 3 and 3. Further, the rotation axis of the display body 2 is constituted by the portions of the shafts 31 c and 31 c of the hinges 31 and 31 inside the cover 21, and is not an actual axis that penetrates the cover 21 in the left-right direction, for example. . That is, it is safe without catching a finger or the like on the shaft, and the rotating shaft itself is not visually recognized from the outside, so that it looks good.
[0017]
The hinges 31 and 31 may be provided with a friction mechanism. However, since the angle of the display body 2 can be held by the arbitrary angle holding mechanism 5, the hinges 31 and 31 do not need a friction mechanism and have a simple configuration. It has become.
[0018]
FIG. 1 and FIG. 2 are main part sectional views showing the arbitrary angle holding mechanism 5. 4 corresponds to the cross-sectional view taken along the line B-B in FIG. 4. FIG. 1 shows a state in which the display body 2 is housed in the housing recess 12, and FIG. 2 raises the display body 2 from the housing recess 12. Indicates the state. The guide groove 511 of the lock mechanism block 51 includes a lower horizontal first groove 511a, an upper horizontal second groove 511b substantially partitioned by the first groove 511a and the horizontal plate 51a, and a first groove 511a. It is formed by four engagement grooves 511c, 511d, 511e, and 511f formed in the lower piece. Further, the lock mechanism block 51 has an opening 51b in a part on the rear side of the guide groove 511, and has a blade plate 51c extending from the horizontal plate 51a and extending on the opening 51b. The end portion of the blade plate 51c merely connects the first groove 511a and the second groove 511b with a width smaller than the diameter of the guide pin 522 of the link member 52, and the end portion of the blade plate 51c is connected to the blade plate 51c. It is a free end due to elasticity.
[0019]
With the above configuration, when the display body 2 is raised from the storage recess 12, that is, when the axes 31c and 31c of the hinges 31 and 31 are rotated counterclockwise in FIG. The link member 52 connected to the second member 52 moves, and the guide pin 522 moves to the rear side (right side in the drawing) following the first groove 511a. When the guide pin 522 moves to the inclined surface at the rear end of the first groove 511a and further rotates the display body 2, the guide pin 522 pushes up the blade plate 51c along the inclined surface, and the guide pin 522 is in the second groove. Move to 511b. When the display body 2 is rotated clockwise in FIG. 1 from here, the guide pin 522 moves to the front side (left side in the drawing) along the second groove 511b on the blade plate 51c. When the guide pin 522 moves to the inclined surface at the front end of the second groove 511b and further rotates the display body 2, the guide pin 522 moves along the inclined surface to the first groove 511a. From the above, the vane plate 51c functions as a pin movement check valve.
[0020]
In this way, when the display body 2 is raised from the storage recess 12 to the maximum standing position (position where the guide pin 522 abuts the rear end of the second groove 511b) and stored in the storage unit 12 again, the guide pin 522 is moved between them. The first groove 511a → the second groove 511b → the first groove 511a moves. Therefore, when the display body 2 is tilted backward (when it rotates clockwise in FIG. 1) when the guide pin 522 is in the first groove 511a, the guide pin 522 is engaged with the engaging grooves 511c, 511d, and 511e. , 511f are engaged with the engaging groove on the front side of the guide pin 522, and the display body 2 is not further rotated (turned down) toward the storage recess 12 side. That is, the angle of the display body 2 can be held at a plurality of arbitrary positions corresponding to the plurality of engaging grooves 511c, 511d, 511e, and 511f. Therefore, the performer (user) can set the display body 2 to a desired angle, and the display visibility of the display body 2 is improved.
[0021]
As shown in FIG. 4, a protrusion 15 having a horizontal cross section “Y” is formed between the rear panel 13 of the upper case 1 and the lock mechanism blocks 51, 51 of the arbitrary angle holding mechanism 5. The rear end portions of the lock mechanism blocks 51 and 51 come into contact with the projection 15. Thus, the lock mechanism blocks 51 and 51 are reinforced so that the lock mechanism blocks 51 and 51 can withstand even when a force to further tilt the display body 2 forward is applied with the display body 2 raised to the maximum standing position.
[0022]
As described above, the arbitrary angle holding mechanism 5 is an arbitrary angle holding mechanism having the link member 52 and the lock mechanism block 51 that is movable while fitting one end of the link member 52 and locks the one end at a predetermined position. Thus, one is connected to the display body 2 and the other is connected to the case body 1 to hold the display body 2 at an arbitrary angle. That is, the lock mechanism block 51 functions as a limiter that restricts the movement path of the guide pin 522 of the link member 52 to the path of only the first groove 511 a and the second groove 511 b and restricts the rotation range of the display body 2. Therefore, since the display body 2 is not rotated or overturned more than necessary, the display body 2 can be prevented from being broken.
[0023]
The arbitrary angle holding mechanism 5 is attached to the inside of the case body 1, and a connecting portion (the end 211 a of the extension portion 211 and the fixing plate 523 of the link member 52) between the arbitrary angle holding mechanism 5 and the display body 2 is also provided. Located inside the case body 1. That is, since the arbitrary angle holding mechanism 5 is not exposed outside the case body 1, the arbitrary angle holding mechanism 5 itself is not destroyed, and there is a risk that a hand or the like may be caught in the arbitrary angle holding mechanism 5. Absent.
[0024]
As shown in FIGS. 1 and 2, the extending portion 211 of the display body 2 is a curved portion bulged from the back surface portion 21-1 of the cover 21 with a circular arc shape centering on the shaft 31 c of the hinge mechanism 3. 211-1 and a rectangular portion 211-2 formed on the lower end side of the cover 21 in parallel with the back surface portion 21-1 of the cover 21 from the curved portion 211-1. The curved portion 211-1 protrudes from the opening 12a with respect to the storage recess 12 by the rotation of the display body 2, but the rectangular portion 211-2 is near the front side of the bulging portion 12R (the back surface of the storage recess 12). Thus, it moves (rotates) inside the case body 1. Further, the extended portion 211 has an opening 211-3 formed in a portion facing the back surface of the upper case 1 in a state where the display body 2 is stored in the storage recess 12 (FIG. 1). Then, a wiring cable 23 such as a flat cable connected to the circuit portion inside the display body 2 is connected to the upper case 1 from the cover 21 via the bending portion 211-1, the rectangular portion 211-2, and the opening 211-3. It is pulled out inside. As shown in FIG. 4, the wiring cable 23 is connected to the connector 302a in the second printed board 302 on which a display circuit and the like are mounted.
[0025]
As described above, in this embodiment, the movable body, which is a display body, extends the end surface 211-4 from the rotating shaft (rotating fulcrum portion) to the inside of the case body 1, and this extending portion (extending portion) One of the arbitrary angle holding mechanisms 5 is rotatably provided in the installation portion 211). With this technical idea, it is possible to arbitrarily hold the angle of the movable body by incorporating the arbitrary angle holding mechanism in the case body. Further, since the extending portion can be used as a cover for the entire range of rotation of the movable body for cable wiring, the wiring portion can be seen from the outside and is not unsightly.
[0026]
It goes without saying that the wiring cable 23 can be connected to the first printed circuit board 301 or the third printed circuit board 303 according to the circuit design, but even in such a case, as shown in FIG. A pressing member 302b may be provided on the second printed board 302 adjacent to the portion 211, and the wiring cable 23 may be hooked on the holding member 302b and then wired to the first printed board 301 or the third printed board 303. Although FIG. 7 shows a state in which wiring is performed on the first printed circuit board 301 side, when wiring is performed on the third printed circuit board 303 side, the wiring cable 23 is not necessarily bent to the opposite side. As described above, when the wiring cable 23 is wired to the second printed board 302 or the pressing member 302b is provided, the bending deformation of the wiring cable 23 becomes only a part even when the display body 2 is rotated. The wiring is stable.
[0027]
As described above, when the arbitrary angle holding mechanism 5 is fixed to the upper case 1, the link member 52 fixed to the cover 21 has the arbitrary angle holding mechanism 5 fixed to the cover 523 via the inside of the extending portion 211. The wiring cable 23 is arranged from the circuit portion of the body 2. Therefore, the wiring cable 23 is not exposed to the outside of the upper case 1, and disconnection is extremely difficult, and the safety wiring design is achieved.
[0028]
Further, a storage recess 12 is provided at a position where the display body 2 is set with respect to the operation panel surface 11 set when the arbitrary angle holding mechanism 5 is stored, and the display body 2 is fitted and stored in the storage recess 12. Therefore, the display body 2 does not protrude from the operation panel surface 11 when the display body 2 is stored, and the operation panel surface 11 becomes smart.
[0029]
Further, the display body 2 rotates about the rotation fulcrum portion (the shafts 31c and 31c of the hinges 31 and 31) of the display body 2, and the extended portion 211 of the cover 21 is in the direction intersecting the rotation fulcrum portion. It is provided in the vicinity, and when the display body 2 is stored, it is arranged further from the storage recess 12 provided on the operation panel surface 11 through the opening 12a. Therefore, the wiring space of the wiring cable 23 can be secured without difficulty.
[0030]
Although the display body in the embodiment is a liquid crystal panel or the like covered with a cover, it may be a display body having a frame or the like, and the frame may be connected to one end of an arbitrary angle holding mechanism.
[0031]
In the embodiments, the electronic keyboard musical instrument has been described as an example, but it goes without saying that the present invention can be applied to other various electronic devices.
[0032]
【The invention's effect】
According to the electronic device of the first aspect, the wiring cable is not exposed to the outside of the case body, the appearance is good, and the safe wiring process that is hardly broken is achieved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part showing an arbitrary angle holding mechanism in a state where a display body in an embodiment of the present invention is housed in a housing recess.
FIG. 2 is a cross-sectional view of an essential part showing an arbitrary angle holding mechanism in a state where a display body is raised from a storage recess according to an embodiment of the present invention.
FIG. 3 is a perspective view of a main part of the keyboard-type electronic musical instrument according to the embodiment of the present invention.
FIG. 4 is a perspective view showing a main part on the back side of the upper case in the embodiment of the present invention.
FIG. 5 is a cross-sectional view of the main part showing the hinge mechanism in a state where the display body in the embodiment of the present invention is housed in the housing recess.
FIG. 6 is a cross-sectional view of the main part showing the hinge mechanism in a state where the display body in the embodiment of the present invention is raised from the storage recess.
FIG. 7 is a diagram showing another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Upper case (case body), 2 ... Display body, 12 ... Storage recessed part, 12a ... Opening part, 21 ... Cover, 211 ... Extension part, 23 ... Wiring cable, 5 ... Arbitrary angle holding mechanism

Claims (1)

The case body,
A display body with a cover rotatably disposed on the upper surface of the case body;
On one of the display body and the other is fixed at a distance from the pivot axis to the case body side, and an arbitrary angle holding mechanism for holding and rotating at any angle relative to the rotation of the display member to at least one direction,
With
The cover of the display body is provided with an extending portion extending from the display body into the case body, and one of the arbitrary angle holding mechanisms is fixed to the extending portion, and the inside of the extending portion is interposed, An electronic apparatus comprising: a wiring cable from a circuit portion of a display body; and the extending portion covers the wiring cable in the entire range of the arbitrary angle.

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