JPH1016655A - Monitor elevatable device of on-vehicle electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stop a monitor even at an intermediate position of a rising position and a lowering position. SOLUTION: A plural number of recessed parts 2b, 2c, 2d, 2e are provided on a lever 2 to elevate a monitor up and down, and a lock pin 6 is provided free to go in and out toward a moving passage of a plural number of the recessed parts 2b, 2c, 2d, 2e. The lock pin 6 is made to rush into the recessed parts 2c, 2d at a stopping position in the middle of a rising position and a lowering position of the monitor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted electronic device having a monitor, such as a vehicle-mounted television and a navigation device, and more particularly to a monitor elevating device.

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional monitor elevating device for a vehicle-mounted television or the like raises and lowers a monitor at two positions: a solid line rising position and a dotted line falling position.

[0003]

In the above-described conventional monitor elevating device, the monitor can be stopped only at two places. However, depending on the mounting position of the electronic device of the vehicle, when the monitor is raised, the monitor and the like may be stopped. In some cases, it could not be used due to interference.

Further, in order to place the monitor in the most visible position, it is desired to change the height in accordance with the position of the seat and the physique of the user. The conventional monitor elevating device satisfies such a demand. Could not. For example, even if a motor having a lock function such as a worm gear is used as a drive source of a monitor elevating device and the motor is stopped halfway, there is a problem that the screen is gradually lowered due to the vibration of the vehicle.

[0005] The present invention has been made in view of the above-mentioned points, and aims to expand the range of vehicles that can be installed, and to adjust the monitor position according to the position of the seat and the physique of the user. It is an object of the present invention to provide a monitor elevating device for an in-vehicle electronic device that can be adjusted.

[0006]

According to the present invention, there is provided a monitor raising / lowering device for a vehicle-mounted electronic device, wherein a plurality of recesses are provided in a lever for raising / lowering the monitor or a member which moves together with the lever, and a plurality of lock pins are provided in a fixing member. The lock pin is provided so as to be able to freely enter and exit toward the moving path of the concave portion, and the lock pin is inserted into the concave portion at a stop position intermediate between the ascending position and the descending position of the monitor.

Also, in the monitor elevating device for the vehicle-mounted electronic device, when the lock pin is pulled out of the recess in order to elevate and lower the monitor, the lever is once driven in a direction opposite to a direction in which gravity of the monitor is applied. It is what was constituted.

In the above configuration, since the lifting / lowering device is reliably stopped by fitting the lock pin and the concave portion, the screen position does not move due to the vibration of the vehicle. In addition, the weight of the monitor acts to bite the lock pin and the concave part to lock, but when the lock pin is pulled out, the lever is driven once in the direction opposite to the direction in which the gravity of the monitor is applied. Even if the sticking phenomenon occurs, it can be easily released, so that the lock pin can be reliably pulled out with a small force.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a monitor elevating device for an in-vehicle video / audio device to which the present invention is applied will be described with reference to the drawings. FIG. 1 is a perspective view showing the appearance of a monitor elevating device of a video / audio equipment for a vehicle to which the present invention is applied, and FIG. 2 is a side view showing the monitor elevating device. In FIG. 2, reference numeral 1 denotes a main body chassis of an in-vehicle video / audio device, which rotatably supports a driving arm 2 and a driven arm 3 via shafts 2a and 3a.

The monitor frame 4 is pin-connected to the drive arm 2 and the driven arm 3, and the monitor frame 4
A link mechanism for moving the camera without changing its posture is formed. The drive arm 2 and the driven arm 3 have the same shape and are provided in pairs on the left and right sides of the main body, and the left and right drive arms 2 are configured to be driven in synchronization. The shaft 2a is driven to rotate by a driving mechanism (not shown).

The drive arm 2 is provided with recesses 2b, 2c, 2d and 2e on concentric circles centered on the shaft 2a.
The disk 5 is fixed to the drive arm 2 and cut and raised.
a, 5b are provided. The disk 5 is further provided with notches 5c, 5d, 5e and 5f on concentric circles centered on the shaft 2a.

The lock pin 6 is movably supported in the direction perpendicular to the paper surface, is urged upward by a spring (not shown), and is driven downward by a solenoid (not shown). The lock pin 6 is located at a position where it engages with the recesses 2b, 2c, 2d, and 2e. The detector holder 7 is the main body chassis 1
And supports the microswitch 8 and the photointerrupters 9a and 9b. The microswitch 8 is actuated by cutting and raising 5a, 5b, and the photo interrupters 9a, 9b are cutouts 5c, 5d, 5e, 5f.
Is detected.

The drive arm 2 is driven in a range A shown in the figure, and its lower limit position and the raised position correspond to the lowered position and the raised position of the monitor. Although FIG. 1 shows the monitor's raised position by a solid line, the monitor is also stopped at three positions shown by dotted lines. The positions are set as the descending position from the bottom, the first intermediate position, and the second intermediate position, and the on / off states of the microswitch 8 and the photointerrupters 9a and 9b are as shown in the following table.

Lower position First intermediate position Second intermediate position Ascended position Micro switch 8 ON OFF OFF ON Photo interrupter 9a ON ON OFF OFF Photo interrupter 9b OFF OFF ON ON In this way, the monitor position is detected based on the state of the detector. You. When instructed to raise and lower the monitor, the control device rotates the motor in the direction to move the monitor, but before that, turns on the solenoid and removes the lock pin from the recess of the drive arm 2. At this time, when it is detected that the lock pin is locked by the drive arm 2 due to the bite and does not move for a certain period of time, the control device drives the drive arm 2 once in the direction opposite to the direction of the gravity of the monitor to lock the lock pin. After confirming that the monitor has come off, rotate the motor in the direction to move the monitor.

Since each stop position of the monitor is detected by the sensor as described above, the solenoid is turned off when it is detected that the vehicle has passed the stop position immediately before the target stop position. At the target stop position, the lock pin enters the concave portion of the drive arm 2 by the elastic force of the spring and the drive arm 2
Is locked. Immediately thereafter, the motor is stopped.

Although the embodiment is constructed as described above, the invention is not limited to this. For example, the concave portion engaging with the lock pin may be provided in the driven arm 3 which moves in a one-to-one corresponding positional relationship with the drive arm 2. Good. Further, in the embodiment, the drive arm 2 is driven in the unlocking direction only when the lock pin does not move for a certain period or more. However, the drive arm 2 may be driven in the unlocking direction whenever the lock pin is removed.

[0017]

According to the apparatus for raising and lowering a monitor of an on-vehicle electronic device according to the present invention, the position of the monitor can be stopped at a position intermediate between the raised position and the lowered position, so that the number of types of vehicles that can be installed increases. Further, the position of the monitor can be adjusted according to the position of the seat and the physique of the user, and the monitor can be viewed in a comfortable posture.

Further, since the lifting device is reliably stopped by fitting the lock pin and the concave portion, the screen position does not move due to the vibration of the vehicle. In addition, the weight of the monitor acts to lock the lock pin and recess by biting, but when the lock pin is pulled out, the lever is once driven in the direction opposite to the direction of the gravity of the monitor, so the lock action is released and the lock is released. The pin can be reliably pulled out with a small force.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of a monitor elevating device of a video / audio device for a vehicle to which the present invention is applied.

FIG. 2 is a side view showing the monitor elevating device.

FIG. 3 is a perspective view showing an example of a monitor elevating device for a conventional in-vehicle video / audio device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body chassis 2 Drive arm, 2a axis, 2b, 2c, 2d, 2e
Concave portion 3 Followed arm, 3a shaft 4 Monitor frame 5 Disk, 5a, 5b Cut and raised, 5c, 5d, 5
e, 5f Notch 6 Lock pin 7 Detector holder 8 Micro switch 9a, 9b Photo interrupter

Claims (2)

[Claims] A plurality of recesses are provided on a lever for raising and lowering a monitor or a member that moves together with the lever, and a lock pin is provided on a fixed member so as to be able to move in and out toward a moving path of the plurality of recesses. A monitor elevating device for an in-vehicle electronic device, wherein the lock pin is inserted into the recess at a stop position intermediate to a lower position. 2. The in-vehicle electronic device according to claim 1, wherein when the lock pin is pulled out of the recess in order to raise and lower the monitor, the lever is once driven in a direction opposite to a direction in which gravity of the monitor is applied. Monitor lifting device.