JP4097777B2 - In-vehicle display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-vehicle display device in which a monitor is variable between a standing posture and a lying posture.
[0002]
[Prior art]
This type of in-vehicle display device is configured, for example, such that a device body is embedded in a dashboard of a vehicle and a TV image or the like is viewed on a monitor provided on the front surface of the body. In the main body, there is a TV tuner for displaying a TV image on a monitor, as well as an AV device that drives a CD or MD, for example. In an apparatus equipped with an AV device, a loading port for a recording medium such as a CD or an MD is arranged on the front surface of the main body. Therefore, when it is necessary to load / discharge the recording medium, a monitor in a standing posture is laid down. The loading port needs to be exposed. An apparatus capable of moving the monitor between the standing posture and the lying posture as described above is disclosed in, for example, Japanese Patent Laid-Open Nos. 9-31814 and 9-309388.
[0003]
[Problems to be solved by the invention]
In the apparatus disclosed in Japanese Patent Laid-Open No. 9-31814, a monitor in a standing posture is simply tilted forward and lying on its side. In this case, the screen of the monitor in a lying posture faces downward, so that the screen cannot be seen. Further, since this apparatus is configured to manually drive the monitor, the operability is poor.
[0004]
On the other hand, the device disclosed in Japanese Patent Laid-Open No. 9-309388 does not tilt the monitor forward, but drives the monitor from a standing posture to a recumbent posture while maintaining a state where the screen is always visible. It comes to face. However, this device also has a configuration in which the monitor is manually rotated, so that the operability is poor. Considering that this is done electrically, the movement of the monitor is not a simple rotation but a special movement. It is difficult to operate with.
[0005]
An object of the present invention is to provide a vehicle-mounted display device capable of driving a monitor device between a standing posture and a recumbent posture (a posture in which the screen faces upward) with a single drive source by devising a structure related to monitor driving. Is to provide.
[0006]
[Means for Solving the Problems]
1 to 4 showing an embodiment, the present invention is arranged on the front surface of the apparatus body 10 and stands upright in a state where the screen extends substantially vertically, and the screen is upward. Is applied to an in-vehicle display device provided with a monitor 20 that can move between a recumbent posture that protrudes substantially horizontally from the lower front surface of the apparatus body 10.
A slider 46 is rotatably connected to the side portion of the monitor 20 and is linearly movable in a substantially horizontal direction between a position accommodated in the apparatus body 10 and a position protruding from the front surface of the apparatus body 10, and one end. Is connected to the side of the monitor 20 so as to be pivotable, and a portion separated from one end is pivotally coupled to the apparatus main body 10 and a motor 31. The lever 44 is connected to the apparatus main body 10. When the driving force is transmitted to the monitor 20 by the rotation of the lever 44, the slider 46 slides while keeping the slider connecting portion of the monitor 20 at a constant height. The monitor 20 is configured to be driven between a standing posture and a recumbent posture, thereby solving the above problems.
According to the second aspect of the present invention, a link member 43 whose one end is rotatably connected to the lever 44, a distal end portion is rotatably connected to the other end side of the link member 43, and a base end portion is connected to the apparatus main body 10. On the other hand, the first rotating member 41 supported to be rotatable and the middle part of the link member 43 are pivotally connected to the front end portion and in a state of being kept parallel to the first rotating member 41. The driving force of the motor 31 is transmitted to at least one of the second rotating member 42 whose base end portion is rotatably supported by the apparatus main body 10 and the first and second rotating members 41, 42. The lever drive mechanism 100 is provided with power transmission means G1 to G7 for providing rotational force to the apparatus main body 10, and the link member is interlocked with the rotation of the first and second rotating members 41 and 42 with respect to the apparatus main body 10. 43 and the lever 44 is driven by the link member 43. It is obtained by adapted to rotate relative to Okimoto body 10.
The invention of claim 3 is configured such that the power transmission means applies a driving force to both the first and second rotating members 41 and 42.
The invention of claim 4 further includes urging means 62 for applying an urging force on the standing posture side to the monitor 20 at least when the monitor 20 is in the lying posture.
According to the fifth aspect of the present invention, the apparatus main body 10 is provided with an engaging portion 51 that engages with a part of the monitor in a range from the intermediate posture between the lying posture and the standing posture to the standing posture and guides the movement of the monitor. It is a thing.
[0007]
In the section of the means for solving the above-described problem to explain the configuration of the present invention, the drawings of the embodiments are used for easy understanding of the present invention, but the present invention is thereby limited to the embodiments. It is not something.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS.
1 and 2 are perspective views showing the appearance of the in-vehicle display device according to the present embodiment. The display device includes a device main body 10 embedded in a dashboard of a vehicle and a monitor 20 disposed on the front surface of the main body 10, and a TV image or the like is displayed on the screen of the monitor 20. In the casing 11 constituting the main body 10, in addition to a TV tuner for projecting a TV image on the monitor 20, for example, an AV apparatus for driving a CD or MD is housed. A front panel 11e of the casing 11 stores a CD or MD. A loading port SL (FIG. 2) is arranged.
[0009]
In FIG. 1, the monitor 20 takes a standing posture (90 degrees) and observes the screen in this posture. As will be described later, the monitor posture at the time of observation can be adjusted within a predetermined angle range. In FIG. 2, the monitor 20 takes a recumbent posture (0 degree), and the loading slot SL is exposed at this time, so that it is possible to load / discharge a CD or the like. The posture change of the monitor 20 is an application of a so-called Scott Russell mechanism, and is electrically performed by a device provided in the casing 11 as described below.
[0010]
FIG. 3 is a plan view showing the internal configuration of the display device, and FIG. 4 is a side view thereof.
The casing 11 includes a bottom plate 11a, side plates 11b and 11c, a rear plate 11d, a front panel 11e (FIG. 2), and a top plate (not shown), and the monitor driving mechanism 100 along one side plate 11b. Is provided. As shown in FIG. 4, the monitor drive mechanism 100 has a motor 31, a pair of arm members 41 and 42, a link member 43, and a plurality of gears G1 to G7 for power transmission, which are not used. It is fixed to the side plate 11b and the bottom plate 11a of the casing 11 by the illustrated support member.
[0011]
The worm 31a attached to the output shaft of the motor 31 meshes with the gear G1, and the gear G3 meshes with the gear G2 integrated with the gear G1. The gear G5 integrated with the gear G3 meshes with the gear G5, the gear G5 meshes with the gear G6, and the gear G7 integrated with the gear G6 meshes with the gear portions 41b and 42b of the pair of arm members 41 and 42. Yes. The arm members 41, 42 have arm portions 41a, 42a integrated with the gear portions 41b, 42b, and one arm portion 41a is rotatably connected to one end of the link member 43, and the other on the left side in the figure. The arm portion 42 a is rotatably connected to the link member 43. One end of a monitor driving lever 44 is rotatably connected to the other end of the link member 43.
[0012]
The lever 44 is pivotally connected to the side plate 11 b of the casing 11 at the intermediate portion and is pivotally connected to the side surface of the monitor 20 at the other end. Then, as shown in FIG. 5, assuming that the rotation centers of the arm members 41 and 42 and the lever 44 are O1, O2 and O3 and the connection points with the link member 43 are C1, C2 and C3, the points O1, O2 and O3 are located on the same straight line, and the three straight lines connecting the points O1, O2, O3 and the points C1, C2, C3 are parallel to each other and have the same length and length. An arrangement position is defined. That is, by connecting the points, two parallelograms are formed as shown in the figure. In this configuration, when the pair of arm members 41 and 42 rotate in the same direction, the link member 43 moves in a circular arc while maintaining the same posture, and in conjunction with this, the lever 44 rotates around the point O3. To do. This movement changes the length L1 of one side of the parallelogram, but the relationship of the parallelogram is maintained regardless of the position of each member.
[0013]
A lever 45 (FIGS. 3 and 6) is disposed on the other side of the casing 11, and the lever 45 can be rotated to the other side plate 11 c of the casing 11 and the other side surface of the monitor 20 at the same position as the lever 44. Connected to
[0014]
As shown in FIG. 3, the slider 46 is arrange | positioned along the bottom plate 11a of the casing 11, and the guide parts 46a and 46b which stand on the both sides are extended along the both-sides plates 11b and 11c. A pair of front and rear guide holes (long holes) 46c are formed in the guide portions 46a and 46b, respectively. On the side plates 11b and 11c, front and rear guide pins PN project, and the guide pins PN engage with the guide holes 46c. is doing. Therefore, the slider 46 is slidable in the front-rear direction (AB direction) between the position shown in FIG. 4 and the position shown in FIG. 8 by being guided by the guide pin PN. And the front-end | tip of both guide part 46a, 46b is each connected with the side surface of the monitor 20 so that rotation is possible.
[0015]
Rollers 21 are rotatably attached to the upper rear surface of the monitor 20 so as to protrude on both sides, and these rollers 21 can be engaged with guide grooves 51 of guide members 50 provided on the side plates 11b and 11c, respectively. The The dimensions are set so that there is almost no play between both walls of the guide groove 51 and the roller 21. Further, as shown in FIGS. 7 and 8, the guide groove 51 is provided only within a predetermined range from the upper part of the side plates 11b and 11c, and the monitor 20 is set at a predetermined angle (> 0 degree) from the standing posture (90 degrees) in FIG. The roller 21 is engaged with the guide groove 51 only until it reaches. The reason why the guide groove 51 is provided only in this range is for angle adjustment at the time of monitor observation, the details of which will be described later.
[0016]
The side plate 11c of the casing 11 is provided with an assist mechanism 60 that urges the monitor 20 toward the standing posture. As shown in FIG. 6, the assist mechanism 60 includes a plate member 61 that is guided by a pin PN1 projecting from the side plate 11c and moves up and down, and a tension spring 62 that spans between the pin PN1 and the plate member 61. Become. The end of the lever 45 is protruded from the lower portion of the plate member 61 so that the end of the lever 45 can come into contact with the protrusion 61a. When the lever 45 rotates with respect to the main body 10 to the two-dot chain line position, the lever 45 comes into contact with the protrusion 61a. When the lever 45 further rotates, the plate member 61 is pushed upward through the projection 61a, and the spring 62 is pulled. Then, as shown in FIG. 9, when the lever 45 becomes substantially horizontal (at this time, the monitor 20 is in the lying position), the maximum spring force acts on the monitor 20 via the lever 45. The direction of this spring force is the direction in which the monitor 20 is moved to the standing posture.
[0017]
The monitor operation of the display device configured as described above will be described.
When the monitor 20 is in the standing posture as shown in FIG. 4, the roller 21 of the monitor 20 is engaged with the upper portion of the guide groove 51 of the guide member 50. Since there is almost no play between the guide groove 51 and the roller 21, the monitor 20 does not shake even when the vehicle vibrates, and the generation of unpleasant noise can be prevented.
[0018]
When an operation for lying down the monitor is performed in this state, the motor 31 is rotated forward, and the driving force is transmitted to the gear portions 41b and 42b of the arm members 41 and 42 via the worm 31a and the gears G1 to G7. . As a result, the arm members 41 and 42 rotate in the counterclockwise direction shown in the figure, and the link member 43 moves in a circular arc as described above to rotate the lever 44 in the counterclockwise direction. The rotation of the lever 44 gives a force for pushing the monitor 20 in the A direction and a force for pushing the monitor 20 downward, but the slider 46 prevents the monitor 20 from moving downward, and the movement in the A direction is allowed. As the slider 46 advances in the A direction, the monitor 20 tilts as shown by a two-dot chain line in the figure. Thereafter, the slider 46 slides while keeping the slider connection point CP of the monitor 20 at a constant height, and tilts the monitor 20. As the monitor 20 moves, the roller 21 descends in the guide groove 51 substantially vertically, and the other lever 45 rotates in the same manner as the lever 44.
[0019]
FIG. 7 shows a state in which the levers 44 and 45 are rotated to 45 degrees, and the monitor 20 is also tilted to 45 degrees at this time. In this state, as shown by a two-dot chain line in FIG. 6B, one end of the other lever 45 comes into contact with the projection 61a of the plate member 61 constituting the assist mechanism 60, and thereafter, the lever 45 is projected into the projection 61a. The plate member 61 is pushed up against the urging force of the spring 62 via. The biasing force of the spring 62 acts as a force in a direction to return the monitor 20 to the standing posture via the plate member 61 and the lever 45.
[0020]
When the levers 44 and 45 further rotate, the roller 21 of the monitor 20 escapes from the guide groove 51 as indicated by a two-dot chain line in FIG. 7, but the roller 21 continues to descend in the vertical direction thereafter. When the monitor 20 reaches the recumbent posture shown in FIG. 8, a detection device (not shown) detects this and stops the motor 31. At this time, the other lever 45 pushes up the plate member 61 to the uppermost stage as shown in FIG. 9, and the spring force of the spring 62 is maximized. When the monitor 20 is in the recumbent posture, the loading slot SL is exposed as shown in FIG. 2, so that it is possible to load / discharge a CD or the like. Further, when an operation for raising the monitor 20 in this state is performed, the motor 31 is reversely rotated, and the monitor 20 is driven to the standing posture by an operation reverse to the above.
[0021]
By the way, in this Embodiment, the monitor angle attitude | position at the time of observation can be adjusted according to a passenger | crew's liking. For example, when the posture adjustment operation is performed in the standing state of FIG. 4, the motor 31 is rotated forward by a predetermined amount, and when the monitor 20 is tilted by the predetermined amount by the above-described operation, the motor 31 is stopped. Is held in the angle state. Such a posture adjustment of the monitor is possible in a plurality of stages between the state of FIG. 4 and the state of FIG. 7, but the roller 21 is always engaged with the guide groove 51 within the range in which the posture adjustment is possible. Therefore, even if the monitor 20 is fixed at any position, the monitor 20 can be prevented from shaking due to the vibration of the vehicle.
[0022]
As described above, in the present embodiment, the levers 44 and 45 and the slider 46 are used, and the monitor 20 is driven between the standing posture and the recumbent posture by applying the motor driving force only to the lever 44. Monitoring operation is possible with one motor. Therefore, the configuration of the monitor drive mechanism is simplified, the number of parts can be reduced, and it is advantageous in terms of space, and the drive timing control of each motor becomes complicated as in the case of using two or more motors. Nor. Further, although a great amount of force is required to erect the monitor 20 in the recumbent posture, in the present embodiment, the spring 62 (FIG. 9) is attached to the monitor 20 in the recumbent posture via the lever 45. Since the force acts as a force in the standing direction, the monitor 20 can be erected without any trouble without increasing the torque of the motor 31 itself. Therefore, there is no need to use an unnecessarily large motor, and the cost can be reduced.
[0023]
Furthermore, in this embodiment, since the pair of arm members 41 and 42 and the link member 43 are used to drive the lever 44, the following effects are obtained.
That is, in order to rotate the lever 44, for example, a gear is provided on the rotation shaft portion O3 and power is transmitted directly to the gear. However, in this mechanism, the monitor 20 and the slider 46 are located at the positions where they should be arranged. This is not feasible. Thus, for example, as shown in FIG. 10, a mechanism for rotating the lever 44 using the link member 43 ′ and one arm member 41 ′ is conceivable. In this mechanism, the rotating shaft portion of the lever 44, the lever 44 is used. The connecting point with the link member 43 ', the rotation shaft portion of the arm member 41' and the connecting point with the link member 43 'of the arm member 41' are positioned on a straight line as shown (monitor angle is 45 degrees). Then, since the rotation of the link member 43 ′ is not transmitted to the lever 44, the monitor 20 cannot be tilted smoothly. In order to solve this, the link member 43 ′ and the arm member 41 ′ may be arranged at a position where the lever can be rotated by a necessary amount (about 90 degrees) within a range where the above points are not arranged in a straight line. In some cases, these members cannot be accommodated in the casing 11. On the other hand, if the pair of arm members 41 and 42 and the link member 43 are provided as in the present embodiment and the rotational force is transmitted equally to both the arm members 41 and 42, the above points are aligned. Even in an aligned state, the rotational force can be transmitted to the lever 44 via the link member 43, and the monitor 20 can be tilted smoothly, and all the above problems are solved.
[0024]
In the configuration of the above embodiment, the arm members 41 and 42 are the first and second rotating members, the gears G1 to G7 are the power transmission means, the spring 62 is the biasing means, and the guide groove 51 is engaged. Each part is configured.
[0025]
【The invention's effect】
According to the present invention, a monitor driving lever and a slider are provided, and when the driving force is transmitted to the monitor by the rotation of the lever, the slider slides while keeping the slider connecting portion of the monitor at a constant height. Thus, since the monitor is configured to be driven between the standing posture and the lying posture, the monitor can be electrically driven by one motor, and the configuration and control of the monitor drive mechanism can be simplified.
If the lever is rotated by driving the link with a pair of rotating members, the lever can be rotated without providing a driving mechanism such as a gear on the rotating shaft portion of the lever, and the apparatus main body can be downsized. I can plan. In particular, if power is transmitted to both of the pair of rotating members, the lever can be smoothly rotated and the monitor can be smoothly moved.
At least when the monitor is in the recumbent posture, if the urging force on the standing posture side is applied to the monitor, the monitor can be raised from the recumbent posture without increasing the motor torque so much that the cost can be reduced. When the monitor is engaged with a part of the monitor in the range from the intermediate posture to the standing posture and the engagement portion for guiding the movement of the monitor is provided in the apparatus main body, the monitor can be driven more smoothly and the monitor can be moved to the intermediate position. Even if the posture is fixed in any posture between the posture and the standing posture, the shake of the monitor can be prevented.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external appearance of a vehicle-mounted display device according to an embodiment of the present invention, showing a state where a monitor is in a standing posture.
FIG. 2 is a view similar to FIG. 1, showing a state where the monitor is in a lying position.
FIG. 3 is a plan view showing an internal configuration of the apparatus main body.
FIG. 4 is a side view showing a configuration of a monitor drive mechanism.
FIG. 5 is a diagram illustrating a mechanism for driving a lever 44;
6A and 6B are diagrams for explaining an assist mechanism that applies a biasing force on a standing posture side to a monitor, where FIG. 6A is a view seen from the rear of the apparatus, and FIG. 6B is a view seen from the line bb.
FIG. 7 is a diagram for explaining a monitor operation and showing a state in which the monitor is in an intermediate posture.
FIG. 8 is a diagram for explaining a monitor operation and shows a state in which the monitor is in a lying position.
FIG. 9 is a diagram showing an assist mechanism when the monitor is in a recumbent posture.
FIG. 10 is a diagram illustrating a problem when only one arm member is provided.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Apparatus main body 11 Casing 20 Monitor 21 Roller 31 Motor 41, 42 Arm member 41a, 42a Arm part 41b, 42b Gear part 43 Link 44, 45 Lever 46 Slider 50 Guide member 51 Guide groove 60 Assist mechanism 61 Plate member 62 Spring 100 Monitor Drive mechanism G1-G7 gear

Claims (5)

It is placed on the front of the device body and can move between a standing posture that stands up when the screen extends approximately vertically and a recumbent posture that protrudes substantially horizontally from the lower front of the device body with the screen facing upward In-vehicle display device equipped with a simple monitor
A slider rotatably connected to the side of the monitor and linearly movable in a substantially horizontal direction between a position accommodated in the apparatus main body and a position protruding from the front surface of the apparatus main body;
One end is rotatably connected to the side portion of the monitor, and a portion separated from the one end is rotatably connected to the apparatus main body,
A lever driving mechanism having a motor and rotating the lever with respect to the apparatus main body;
When the driving force is transmitted to the monitor by the rotation of the lever, the slider slides while keeping the slider connecting portion of the monitor at a constant height, so that the monitor is in the standing posture and the recumbent posture. An in-vehicle display device characterized by being driven between the two. The lever drive mechanism is
A link member having one end rotatably connected to the lever;
A first rotating member that is rotatably connected to the other end side of the link member and a base end portion of which is rotatably supported with respect to the apparatus main body;
A second end is rotatably connected to the intermediate portion of the link member, and a base end is rotatably supported by the apparatus main body while maintaining a parallel state with the first rotating member. A rotating member;
Power transmission means for transmitting the rotational force of the motor to at least one of the first and second rotating members and applying the rotational force to the device main body to the rotating member;
The link member is driven in conjunction with the rotation of the first and second rotating members with respect to the apparatus main body, and the lever is rotated with respect to the apparatus main body by driving the link member. The in-vehicle display device according to claim 1, wherein The in-vehicle display device according to claim 2, wherein the power transmission means is configured to apply the driving force to both the first and second rotating members. The in-vehicle display device according to any one of claims 1 to 3, further comprising urging means for applying an urging force on the standing posture side to the monitor when at least the monitor is in the recumbent posture. . The apparatus main body is provided with an engaging portion that engages with a part of the monitor in a range from an intermediate position between the recumbent posture and the standing posture to a standing posture and guides the movement of the monitor. The in-vehicle display device according to any one of claims 1 to 4, wherein the on-vehicle display device is provided.

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