JP2002200941A - On-vehicle av device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle AV device capable of automatically setting and housing a monitor unit in an easy-to-see position while a driver being seated on a seat, causing no lowering of the monitor unit, and excellent in an external appearance in a small type. SOLUTION: In this on-vehicle AV device set in a ceiling part of an automobile and having a function capable of tilting the monitor unit 60, a motor unit 11 with a speed reducer is used for a tilting driving mechanism for tilting the monitor unit 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle AV device such as a liquid crystal television and a car navigation device mounted on a ceiling of an automobile or the like.

[0002]

2. Description of the Related Art In the past, it was common for a person in a rear seat to watch a television or the like on a monitor or the like with a monitor attached to a dashboard or a console box. It is also increasingly used to mount the camera on the ceiling of a car. As a device to be mounted on the ceiling, a torque is generated by applying a load to a tilt (rotation) axis of the monitor with a spring or the like. When tilting, the monitor is rotated by hand with a torque higher than the load torque. There is a manual mounting type having a structure in which the rotated position is held by a load torque by a spring. In the manual mounting type, when the monitor is not used, the monitor is stored by hand so as to be substantially parallel to the ceiling, and when used, the monitor is tilted and set at a position that is easy for the user to see.

[0003]

However, the conventional ceiling-mounted AV device has a structure in which the monitor is manually tilted, so that the monitor cannot be tilt-set while sitting on a seat. In addition, there is a problem that the monitor is rotated from the storage position and lowered by the weight of the monitor. Further, there are many structural components such as gears and springs, which are large in size and large in volume projecting from the ceiling, and there are many structures in which the gear portion and the like can be seen in the appearance of the product.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to automatically set or store a monitor unit at an easy-to-view position while sitting on a seat, and to lower the monitor unit. It is an object of the present invention to provide an in-vehicle AV device that is compact, has a small protrusion from the ceiling, and has a good appearance.

[0005]

According to the present invention, there is provided an on-vehicle AV apparatus which is set on a ceiling of an automobile and has a function of rotating a monitor unit. The tilt drive mechanism for tilting the monitor unit is provided. And a drive unit having the following. This allows
The user can automatically set the monitor in a position where it is easy to see while sitting in the seat, and can automatically store the monitor when not in use.

[0006] The tilt drive mechanism uses a motor and a reduction gear. As a result, the user can automatically set the monitor in a position where the user can easily view the monitor while sitting on the seat, and can automatically store the monitor when not in use.

Further, a motor unit with a speed reducer is used for the tilt drive mechanism. As a result, the volume of the drive unit can be reduced as compared with the case where a normal motor is used, so that the product can be downsized, and when mounted on the ceiling, there is an effect that the volume protruding from the ceiling is minimized. .

The tilt drive mechanism has a transmission gear for transmitting the driving force, and the transmission gear is constituted only by a train of spur gears. Thereby, the transmission efficiency of the force is good, and the generation of loud meshing noise can be prevented.

In addition, a storage portion for covering the periphery of the monitor unit and the drive unit is provided, a final gear of the monitor unit is provided outside the monitor unit, and the final gear is stored in the storage portion. . This makes it possible to improve the appearance since the gear portion and the like are not visible in the appearance of the product during storage and use.

[0010] Further, a lock unit is provided for locking the monitor unit by driving a lock drive mechanism when the monitor unit is stored on the ceiling side. As a result, the monitor does not rotate due to the vibration of the vehicle or the weight of the monitor during storage and does not come down.

Further, a motor unit with a speed reducer is used for the lock drive mechanism. As a result, the mechanism can be downsized, so that the product can be downsized.

The lock unit has a lock speed reducer motor unit, a spur gear provided as a final gear of the lock speed reducer motor unit, and a flat spur gear meshing with the spur gear at one end. And a lock gear having a lock portion inserted into a groove provided in the monitor unit at the other end. As a result, stable locking against vehicle vibration can be achieved.

Further, when the monitor unit is stored on the ceiling side, the display surface of the monitor unit faces the ceiling side. Thus, no external impact is directly received.

Further, the back surface of the monitor unit is substantially flush with the projection of the storage section. This results in a design with a sense of unity and good appearance.

Further, the drive unit is mounted on the ceiling of the vehicle so as to enter the interior of the ceiling lining member of the vehicle. Thereby, the protrusion from the ceiling of the device can be reduced.

Further, the operation switch is provided on the rear seat side of the storage section. This allows easy operation without a remote control.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings. FIG. 1 is a perspective view showing a state in which a vehicle-mounted AV device according to an embodiment of the present invention is mounted on a ceiling of a car, showing a state where a monitor unit is tilted, and FIG. Figure,
FIG. 3 is a perspective view of the main body of the AV apparatus viewed from the ceiling mounting side, and FIG.
FIG. 5 is a perspective view of the AV apparatus main body viewed from below, showing a state where the monitor unit is not tilted. FIG. 5 is a perspective view of the AV apparatus main body when the monitor unit is tilted.

1 and 2, reference numeral 60 denotes a monitor unit, 60a denotes a liquid crystal display surface, 60b denotes a back surface of the monitor unit, 80 denotes an inner case, 120 denotes an outer case as a storage portion, 110 denotes a ceiling lining member, and 130 denotes an operation switch. It is.

(1) AV Device Main Body In FIGS. 3 to 5, reference numeral 300 denotes an AV device main body, which comprises a drive unit 40 and a monitor unit 60.
In the drive unit 40, reference numeral 20 denotes a drive frame;
Reference numeral denotes a motor unit with a tilt speed reducer, which is a tilt drive mechanism. The motor unit is adjusted to a predetermined reduction ratio, and is fixed by screws to a tilt motor fixing frame 15 fixed to the drive frame 20 by screws. Reference numeral 12a denotes a transmission gear press-fitted into the tilt output shaft of the motor unit 11 with a tilt reducer, which is guided by a fixing pin 13a fixed to the side surface of the drive frame 20 by caulking.

The transmission gears 12b to 12e are connected to the transmission gear 12a.
The transmission gears 12b, 12c, 12d are guided and fixed to metal pins 13b, 13c rotatably mounted on the tilt motor fixing frame 15 and the drive frame 20, respectively. The transmission gears 12e and 12f are rotatably fixed to fixing pins 13d and 13e which are fixed by caulking on the side surface of the drive frame 20, respectively. The transmission gears 12a to 12a
2f is a spur gear.

Reference numeral 14 denotes a spring member provided on the transmission gear 12b for applying a load to the metal pin 13b, and constitutes a torque limiter together with the transmission gear 12c.
32 is fixed to the drive frame 20 and the sensor substrate 31
And a tilt angle control sensor (rotary sensor) connected to the protruding portion of the metal pin 13c protruding from the outer surface of the side surface of the drive frame 20. When the metal pin 13c rotates, the tilt angle control sensor 3
2 also detects the resistance value corresponding to the rotation angle of the variable resistance part rotating.

In the monitor unit 60, reference numeral 63 denotes a rotating shaft which is fixed by screws inside the monitor unit 60 and serves as a rotating shaft of the monitor unit 60. Fixed to 62 is fixed to a rotating shaft 63, and
This is the final gear that meshes with the transmission gear 12f. Reference numeral 64 denotes a monitor return spring provided on the rotating shaft 63. One end of the spring is hooked on the side surface of the drive frame 20. When the monitor unit 60 is rotated between the rotating shaft 63 and the monitor unit 60, a spring for returning the monitor works. It is installed as follows. The monitor return spring 64 functions to suppress rattling due to gear backlash.

Reference numeral 30 denotes a control board, which is screw-fixed to the drive frame 20, and controls the motor unit 11 with the tilt reducer and controls the video / audio data from the external unit. Consists of 66 is a connection cable (FPC). Although not shown, the monitor unit 60 is provided with an infrared sensor for a remote controller, a dimmer sensor for adjusting the brightness of the monitor screen by external light, and the like.

Next, the operation of the AV apparatus main body 300 will be described with reference to FIG.
5 will be described. First, when receiving a signal to start tilting, the motor unit 11 with a reduction gear for tilting is started.
Starts to rotate and transmits to the transmission gear 12a by the rotation of the motor unit 11 with the tilt reducer, and then to the transmission gear 12b, the spring member 14, and the transmission gear 12c constituting the torque limiter, and the monitor unit is driven by external force. 60
If a force greater than the set value is applied to the device, the rotation will be cut off.

Next, the transmission gear 12d is transmitted to the transmission gear 1d.
2e and 12f, the rotation is transmitted to the final gear 62, and the rotating shaft 6 is fixed to and integrated with the final gear 62.
By rotating the monitor 3, the monitor unit 60 is rotated (falled) to a set angle as shown in FIG. FIG. 5 shows the case where the angle is about 110 degrees from the angle 0 in the housed state on the ceiling side.

Next, when storing (starting up), of the operation switches 130 provided on the outer case 120,
When a signal of a close switch or a close switch operation by a remote controller is received, the motor unit 11 with the tilt reducer starts to rotate in a direction opposite to the shutdown, and the subsequent rotation is transmitted to the transmission gear, and the monitor unit 60 is turned on. Rotate and store.

(2) Lock Unit FIG. 6 is a cross-sectional view when the AV device main body and the lock unit are fixed to the ceiling-mounted frame, FIG. 7 is a partial perspective view when the lock unit is mounted to the ceiling-mounted frame, and FIG. FIG. 9 is a perspective view showing a mounting position of a main part of the unit and the monitor unit, FIG. 9 is an exploded perspective view of the lock unit,
FIG. 10 is an explanatory diagram of the lock operation.

6 to 9, reference numeral 200 denotes a lock unit, which is a motor unit 210 with a lock reducer adapted to a reduction ratio for producing a predetermined force, and a lock output shaft of the motor unit 210 with a lock reducer. Lock transmission gear (flat tooth) 220 press-fitted, lock gear (flat tooth) having a portion for locking monitor unit 60
230 is a main component. 67 is the monitor unit 6
No. 0 is a groove provided on the side surface of the tip.

As shown in FIG. 9, the lock unit 200 is assembled by a motor unit 210 having a lock speed reducer.
Is guided by a lock motor fixing frame 250 and is fixed by screws. Then, the lock transmission gear 220 is guided by a fixing pin 241 fixed by caulking to a side surface of the lock unit fixing frame 240. At the same time, the lock motor fixing frame 250 also It is positioned on the lock unit fixing frame 240 by a guide dowel (not shown) and fixed by screws.

Next, the lock gear 230 is connected to the lock gear guide frame 260 by the lock gear slide portions 234, 235.
The lock gear guide frame 270 is disposed from above so that the movement limiting pins 271 and 272 are inserted into the groove 233 provided in the lock gear 230, and fixed by screws. Next, the integrated lock gear 230 and lock gear guide frames 260 and 270 are positioned on the lock unit fixing frame 240 by a guide dowel (not shown), and are screw-fixed to the lock gear guide frame 270 to complete the lock unit 200.

Then, the lock unit 200 is screw-fixed to a predetermined position of the ceiling mounting frame 70 to complete the arrangement of the lock mechanism. After mounting, the power supply for driving the lock unit 200 and the wiring related to control are arranged appropriately on the ceiling-mounted frame 70.

Next, the operation will be described with reference to FIG. FIG. 10 shows only the motor unit 210 with lock speed reducer, the lock transmission gear 220, and the lock gear 230 of the lock unit 200, and the monitor unit 60 is in the retracted state and at a tilt angle of 0 degree.

First, when locking is performed, when a lock start signal is input, the motor unit 210 with the lock reducer starts to rotate, and the rotation is transmitted to the lock transmission gear 2.
20, the lock gear 230 is moved to the lock side, and the lock gear 23 is inserted into the groove 67 of the monitor unit 60.
The zero lock portion 232 enters and is locked. The actual movement is guided by the lock gear slide guides 261 and 262 of the lock gear guide rail 260 and the movement limiting pins 271 and B272 of the lock gear guide frame 270, and the lock gear 230 moves. The lock gear 230 hits the movement limiting pin 271 and stops.

Next, to release the lock, when a signal to start the release of the lock is input, the motor unit 210 with the lock reducer starts to rotate in a direction opposite to that in the lock operation, and the rotation is transmitted to the lock transmission gear. 220, the lock gear 230 is moved to the release side, and the monitor unit 60
The lock portion 232 of the lock gear 230 is released from the groove portion 67 and is released. The actual movement is the lock gear guide rail 2
60 and the movement limiting pins 271 and 2 of the lock gear guide frame 270.
Guided by 72, the lock gear 230 moves. The lock gear 230 hits the movement limiting pin 272 and stops.

As described above, the motor unit 2 with the speed reducer
By using 10, the lock unit 200 can be significantly reduced in size and simplified. When a normal motor is used, several types of gears for reducing the speed to a predetermined reduction ratio are required. Also, without using a motor, use a solenoid to change the magnetic force into arm movement (including rotation) force,
Further, a mechanism for locking by changing the axial movement distance within the solenoid to the arm movement amount is not suitable for use because the force, movement amount, position accuracy, etc. are insufficient.

(3) Assembly of Vehicle-mounted AV Device and Attachment to Car FIG. 11 is an explanatory view of assembly of the vehicle-mounted AV device. First, when the monitor unit 60 is tilted to the ceiling-mounted frame 70, the interior case 80 is fixed with screws so that the ceiling-mounted frame 70 and the internal wiring and the like cannot be seen. And
The lock unit 200 is also fixed to the ceiling mounting frame 70 with screws. There, integrated monitor unit 6
The AV main body 300 including the drive unit 40 and the drive unit 40 is mounted. The drive unit 4 is mounted on the ceiling mounting frame 70.
0 is fixed to a mounting screw hole provided in the drive frame 20 with a screw. Then, a protective case 50 made of plastic for protecting the drive unit 40 is attached to the drive frame 2.
Fix to 0 with screws. After assembling so far, attach it to the ceiling of the car.

Next, the mounting of the in-vehicle AV device on a car will be described. FIG. 12 is an explanatory view of the installation of the intermediate assembly of the in-vehicle AV apparatus on the ceiling of the car, FIG. 13 is an explanatory view of the installation of the outer case of the in-vehicle AV apparatus, and FIG. FIG. 15 is a perspective view, and FIG. 15 is a schematic view illustrating a final gear.

First, as shown in FIG. 12, an intermediate assembly of an in-vehicle AV device in which a monitor unit 60, a drive unit 40, a lock unit 200 and the like are mounted on a ceiling mounting frame 70 is mounted on a lining member 110 of a vehicle ceiling mounting portion. Attachment member 10 provided on interior car side ceiling frame etc.
Attach it to the screw hole 71 with a screw. In FIG. 12, the lock gear 230 of the lock unit 200 is not yet locked (locking is performed at the time of initialization after assembly is completed). The drive unit is attached to the driver's seat side, and the monitor unit is attached to the rear seat side.

Next, as shown in FIG. 13, after the ceiling mounting frame 70 is fixed to the vehicle-side mounting member 100 and the wiring-related processing is completed, the outer case 120 as the final assembly member is covered with the monitor unit. It is hooked on an outer case hooking portion 72 provided on the ceiling mounting frame 70, and is fixed so as to sandwich the ceiling lining member 110 in the outer peripheral portion of the mounting hole provided in the mounting portion of the ceiling lining of the vehicle. Here, the outer case 120 located between the lock gear 230 of the lock unit 200 and the groove 67 of the monitor unit 60 has a hole at an opposite position, and the lock gear 230 is locked in the groove 67 while penetrating the hole. .

When the hooking force is insufficient, for example, a screw hole is provided in the outer case to fix the frame to the ceiling mounting frame 70, but it is necessary to prevent the appearance of the product from being affected. As described above, the structure in which the structural portion is inserted into the interior of the ceiling lining member of the vehicle to some extent can reduce the amount of the outer case 120 protruding from the lining portion (portion A in FIG. 13 and its volume). In addition, since switches 130 provided on the monitor unit 60 are provided on the rear seat side of the outer case 120, operation can be performed without a remote controller, and operability is good.

Further, as shown in FIG. 14, when the monitor unit 60 is housed, it is accommodated in the outer case 120, and the protruding portion of the outer case 120 and the surface of the monitor unit 60 are substantially at the same height. It has a certain design and structure. The monitor unit 60
During storage, the liquid crystal display surface 60a facing the inside faces the inside of the outer case, so that it does not receive external shock directly. Note that the tilt angle is 0 degree (at the time of storage) to 120 degrees (at the time of tilt MAX).

As shown in FIG. 15, since the final gear 62 has been put out of the outer shape of the monitor unit 60, the outer case 1
Since the 20 is inserted between the monitor unit 60 and the final gear 62, the gear can be made invisible to the user in the event of a tilt or the like.

[0043]

According to the present invention, while sitting on a seat,
The monitor unit can be automatically set or stored at a position where it can be easily viewed, the monitor unit can be prevented from falling down, and the appearance can be improved because it is small and has little protrusion from the ceiling.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which an in-vehicle AV device according to an embodiment of the present invention is mounted on a ceiling of a car.

FIG. 2 is a perspective view when the monitor unit of the on-vehicle AV device is stored.

FIG. 3 is a perspective view of the AV device main body of the on-vehicle AV device viewed from a ceiling mounting side.

FIG. 4 is a perspective view of the AV apparatus main body viewed from below.

FIG. 5 is a perspective view of the AV apparatus main body when the monitor unit is tilted.

FIG. 6 is a cross-sectional view when the AV device main body and the lock unit are fixed to a ceiling mounting frame.

FIG. 7 is a partial perspective view when the lock unit is mounted on a ceiling mounting frame.

FIG. 8 is a perspective view showing a mounting position of a main part of the lock unit and a monitor unit.

FIG. 9 is an exploded perspective view of the lock unit.

FIG. 10 is a diagram illustrating the operation of the lock unit.

FIG. 11 is an explanatory view of assembling the on-vehicle AV device.

FIG. 12 is an explanatory view for assembling the on-vehicle AV device.

FIG. 13 is an explanatory diagram of mounting an outer case of the on-vehicle AV device.

FIG. 14 is a perspective view showing a state where the on-vehicle AV device is completely mounted on a vehicle.

FIG. 15 is a schematic diagram illustrating a final gear.

[Explanation of symbols]

 Reference Signs List 11 Motor unit with reduction gear 12a to 12f Transmission gear 40 Drive unit 60 Monitor unit 60b Back surface of monitor unit 62 Final gear 120 Outer case 130 Operation switch 200 Lock unit 210 Motor unit with reduction gear for locking 220 Spur gear 230 Lock gear 233 Lock part 234 flat spur teeth

Claims (12)

[Claims] 1. An on-vehicle AV device which is set on a ceiling of an automobile and has a function of rotating a monitor unit, comprising a drive unit having a tilt drive mechanism for tilting the monitor unit. AV equipment. 2. The on-vehicle AV according to claim 1, wherein the tilt drive mechanism uses a motor and a reduction gear.
apparatus. 3. The on-vehicle AV device according to claim 1, wherein a motor unit with a speed reducer is used for the tilt drive mechanism. 4. The in-vehicle vehicle according to claim 1, wherein the tilt drive mechanism includes a transmission gear for transmitting a driving force, and the transmission gear includes only a train of spur gears. AV equipment. 5. A storage unit that covers the periphery of a monitor unit and a drive unit, wherein a final gear of the monitor unit is provided outside the monitor unit, and the final gear is stored in the storage unit. The in-vehicle AV device according to claim 1. 6. A lock unit according to claim 1, further comprising a lock unit that locks the monitor unit by driving a lock drive mechanism when the monitor unit is stored on the ceiling side. In-vehicle AV equipment. 7. The on-vehicle AV device according to claim 6, wherein a motor unit with a speed reducer is used as the lock drive mechanism. 8. The lock unit has a lock speed reducer motor unit, a spur gear provided as a final gear of the lock speed reducer motor unit, and a flat spur gear meshing with the spur gear at one end. 8. The on-vehicle AV device according to claim 6, further comprising a lock gear having a lock portion inserted into a groove provided in the monitor unit at the other end. 9. The in-vehicle AV device according to claim 1, wherein when the monitor unit is stored on the ceiling side, the display surface of the monitor unit faces the ceiling side. 10. The in-vehicle AV device according to claim 9, wherein the back surface of the monitor unit is substantially flush with the projection of the storage unit. 11. The on-vehicle AV according to claim 1, wherein the drive unit is mounted on the ceiling of the vehicle so as to enter the interior of the ceiling lining member of the vehicle.
apparatus. 12. An on-vehicle AV apparatus, wherein an operation switch is provided on a rear seat side of a storage section.