KR100806715B1 - Device of controlling front panel tilt - Google Patents

Abstract

The present invention is a front panel tilt control device, the motor operating in the forward or reverse direction, by controlling the operation of the motor to tilt or return the front panel motor drive unit and the movement of the moving member for driving the tilt of the front panel An optical sensor for measuring optically and a control unit for generating a command for controlling the operation of the motor based on the degree of movement of the moving member measured from the optical sensor and transmitting to the motor drive, wherein the optical sensor, A front panel which measures the movement of the movable member by reading an identification mark formed in a bar code form according to the position of the movable member at regular intervals on a surface corresponding to the optical sensor of the movable member performing linear reciprocating motion It relates to a tilt control device.

According to the present invention, the front panel tilt mechanism of the vehicle media playback device is measured with a pulse or other signal using a photointerrupt to enable accurate position control of the tilt mechanism and improve the durability of the tilt mechanism. Can be.

Car Audio, Front Panel, Light Sensor, Tilt, Angle, Pulse, Barcode

Description

Front panel tilt control device {DEVICE OF CONTROLLING FRONT PANEL TILT}

1 shows an exemplary configuration of a car audio having a tiltable front panel according to the prior art.

2 is an exemplary block diagram of a front panel tilt control device in accordance with the present invention.

3A-3C illustrate an exemplary embodiment of an identification mark in a front panel tilt control device in accordance with the present invention.

<Description of the symbols for the main parts of the drawings>

110: body 120: frame

125: front panel 200: gear-motor assembly

210: motor 220: motor shaft

230: worm gear 240: first gear

250: second gear 260: moving member

262: rack 264: hinge pin

270: guide rib 272: hinge pin

274: guide slot 310: motor

320: driving unit 330: light sensor

340: control unit

The present invention relates to a front panel tilt control device. More specifically, an optical sensor can be used to count the front panel tilt mechanism of a car media player using pulses or other signals to accurately control the tilt mechanism. And a front panel tilt control device for improving the durability of the tilt mechanism.

Cars are typically used with attached car audio devices that include functions such as radios, cassette players, or CD players. In addition, a car audio device may include a DVD playback function, for example. These car audio devices are mounted on a dashboard on the front of the driver's seat for easy operation while the driver is driving.

Conventional car audio is composed of a main body embedded in a cartridge formed in a vehicle body, for example, and a front panel is installed in a frame mounted on the front of the main body. The front panel is provided with a plurality of knob assemblies or operation buttons for selecting various functions of the car audio, and there may be a display device such as an LCD for displaying the operation of the car audio.

In such a conventional car audio, in particular, the front panel may be designed to be tiltable. The tiltable front panel is designed to incline the display device, especially when light is incident on the display device, since the displayed content may not be identified. In addition, when the display device is enlarged, mechanical interference may occur. There is also a purpose to avoid. For example, the front panel is provided such that only a display device or an operation button is provided, and the CD is inserted through an insertion hole disposed in the main body after the front panel is tilted.

1 is a view showing an exemplary configuration of a car audio having a tiltable front panel according to the prior art.

As shown, a car audio having a conventional tiltable front panel includes a main body 110 embedded in a cartridge formed in a vehicle body, and a frame 120 is mounted on a front surface of the main body 110. The front panel 125 is installed in the frame 120 to enable tilt movement.

Although not shown, the front panel 125 is provided with a plurality of knob assemblies or operation buttons for selecting various functions of the car audio device, and is provided with a display device for displaying the frequency tuning or operation mode of the car audio.

In addition, one of the operation buttons includes a button for controlling the tilting function. When performing the tilting function, the front panel 125 moves in the width direction of the frame 120 and tilts outward of the frame 120. When performing the return function, the front panel 125 is returned to its original position in a tilted state.

The tilt or return of the front panel 125 may be designed to tilt or return, for example, by a predetermined angle depending on the number of times the corresponding button is pressed, or to be fully tilted or returned directly to its original position when the button is pressed and held down. It may be.

In addition, a pair of guide ribs 270 to which the upper end of the front panel 125 is coupled are respectively installed at both front upper ends of the frame 120. A guide slot 274 having a predetermined curvature is formed at the center of the pair of guide ribs 270. The guide slot 274 is formed to be curved in the outward direction of the frame 120 to facilitate tilt movement of the front panel 125.

In addition, the front panel 125 is movably coupled to the guide rib 270 by a pair of hinge pins 272. One end of the pair of hinge pins 272 is fixedly inserted into both upper ends of the front panel 125, respectively. In addition, the other ends of the pair of hinge pins 272 are inserted into the guide slots 274 so as to be movable. Accordingly, when the front panel 125 is tilted, the hinge pin 272 is moved along the guide slot 274.

In addition, the car audio device is coupled to the front panel 125 and coupled with the movable member 260 and the movable member 260 that linearly reciprocate to tilt the front panel 125 to reciprocate the movable member 260. And a motor-gear assembly 200 to move.

The moving member 260 is disposed below the inner side of the main body 110, and both front ends of the moving member 260 extend through the lower part of the frame 120, and the front panel 125 is hinged 264. It is coupled to both lower ends of the respective ends. In addition, a rack gear 262 engaged with the motor-gear assembly 200 is formed at one side of the moving member 260.

The gear-motor assembly 200 is coupled to the worm gear 230 and the worm gear 230, which are integrally coupled to the motor 210 mounted on the inner wall of the main body, the rotating shaft 220 of the motor 210. A second gear 240 disposed between the first gear 240 and the first gear 240 and the rack gear 262 to transmit the rotational force of the first gear 240 to the rack gear 262. 250).

In addition, the motor 210 has a forward and reverse motor that can be rotated in the forward and reverse directions, in particular may use a stepping motor that operates by a predetermined angle.

Although not shown in an exemplary configuration of a car audio having a tiltable front panel according to the related art, the control unit includes a control unit for controlling the tilt operation of the front panel 125.

For example, the front panel 125 may include a limit switch that detects when the front panel 125 is fully open, and thus the controller may stop the tilt operation of the front panel 125 according to the signal of the limit switch. In addition to the limit switch may be provided with a switch for sensing the current progress of the tilt operation, the control unit may be configured to control the tilt operation or the return operation using these switches.

The control unit may also control the tilt operation through the control parameter of the motor 210 for a desired operation without using a plurality of switches such as a limit switch. That is, the operation time of the motor is stored in advance with respect to the tilt angle, and the tilt operation is performed by operating the corresponding time corresponding to the tilt command input.

However, the conventional control of the tilting operation has the following problems.

First of all, in the case of using a plurality of switches, in particular, in the case of implementing a plurality of tilt angles, there is a disadvantage in that a plurality of switches can be used corresponding to the corresponding angles, and the use of such a plurality of switches increases the manufacturing cost. In addition, when using a mechanical switch method has a disadvantage in that the failure occurs due to the weakness in durability.

In addition, when the control parameter is based, there are no disadvantages in that a large number of switches are provided. However, when there is a part that is not considered in the control parameter, such as when the tilt angle varies depending on the load state, the position or angle control of the tilt operation is impossible. have. In addition, when the control parameter is changed according to the use, it is inconvenient to use since the normal use is possible only by updating the control parameter.

An object of the present invention is to measure the front panel tilt mechanism of the vehicle media playback device using a light sensor as a pulse or other signals to accurately control the tilt mechanism and to improve the durability of the tilt mechanism. To provide a device.

In order to achieve the above technical problem, the present invention provides a front panel tilt control device, a motor operating in the forward or reverse direction, the motor driving unit by controlling the operation of the motor to tilt or return the front panel, the tilt of the front panel An optical sensor for optically measuring the movement of the moving member for driving a; and a control unit for generating a command for controlling the operation of the motor based on the movement degree of the moving member measured from the optical sensor to transmit to the motor driving unit. The optical sensor may include an identification mark formed in a bar code form according to the position of the movable member at a predetermined interval on a surface corresponding to the optical sensor of the movable member performing linear reciprocating motion. It provides a front panel tilt control device that measures movement.

In the front panel tilt control device according to the invention, the motor may be a stepping motor.

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In addition, in the front panel tilt control device according to the present invention, the identification mark may be a form in which lines are repeated at regular intervals on a surface corresponding to the optical sensor of the moving member.

In addition, in the front panel tilt control device according to the present invention, the identification mark may be printed in the form of a sticker and attached to a surface corresponding to the optical sensor of the moving member.

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In addition, in the front panel tilt control apparatus according to the present invention, the optical sensor reads the identification mark and transmits it to the control unit, the control unit determines the current tilt degree of the front panel through the identification mark of the motor You can create commands to control the operation.

Further, in the front panel tilt control device according to the present invention, the optical sensor forms a pulse signal based on the identification mark of the predetermined interval, the control unit in advance the number of the pulse signal according to the degree of tilt of the front panel And a command for controlling the operation of the motor by determining a tilt degree of the front panel from the number of pulse signals from the optical sensor.

In addition, in the front panel tilt control device according to the present invention, the optical sensor is to read the bar code form, the control unit pre-stores a corresponding bar code signal according to the degree of tilt of the front panel, from the optical sensor The tilt level of the front panel may be determined from the barcode signal to generate a command for controlling the operation of the motor.

Hereinafter, the front panel tilt control device of the present invention will be described in more detail with reference to the accompanying drawings.

2 is an exemplary block diagram of a front panel tilt control device in accordance with the present invention. As shown, the front panel tilt control apparatus according to the present invention includes a motor 310, a driver 320, an optical sensor 330, and a controller 340.

The motor 310 operates in the forward or reverse direction. The motor 310 is mechanically connected to the moving member 260 of the front panel 125 so that the moving member 260 performs a linear motion in accordance with the operation of the motor 310 and the moving member 260 moves according to the linear motion. Tilt or return the front panel 125. Since the tilt or return of the front panel 125 has been described with reference to FIG. 1, a detailed description thereof will be omitted. In addition, the motor 310 may use a stepping motor to easily perform the front panel 125 tilt control.

The motor driver 320 controls the operation of the motor 310 to tilt or return the front panel 125.

The optical sensor 330 optically measures the movement of the moving member 260 that drives the tilt of the front panel 125.

In this case, the moving member 260 preferably performs a linear reciprocating motion, and the optical sensor 330 reads the identification mark attached to the moving member 260 to measure the movement of the moving member 260.

Identification labels can be implemented in various forms.

3A to 3C show an exemplary embodiment of an identification mark in the front panel tilt control device according to the invention.

For example, the identification mark illustrated in FIG. 3A or 3B is formed in a form that enables location information to be identified at regular intervals on a surface corresponding to the optical sensor 330 of the moving member 260. The identification mark may be implemented in a form in which lines are repeated at regular intervals as shown in FIG. 3A, or may be implemented in a form in which circles are repeated at regular intervals as shown in FIG. 3B. Alternatively, as shown in FIG. 3C, barcodes may be arranged at positions corresponding to a predetermined interval or a specific angle.

Such an identification mark may also be attached in the form of a sticker, for example. That is, the identification mark formed in FIGS. 3A to 3C is printed on a sticker and attached to the surface corresponding to the optical sensor 330 of the moving member 260.

The controller 340 generates a command for controlling the operation of the motor 310 based on the movement information of the front panel 125 measured by the optical sensor 330, and transmits the command to the motor driver 320.

That is, as the moving member 260 moves, the optical sensor 330 reads the identification mark and transmits it to the control unit 340.

The controller 340 detects the position of the moving member 260 based on the identification mark, and since the position of the moving member 260 corresponds to the tilt angle of the front panel 125, the current tilt of the front panel 125 is performed. You can check the degree. Therefore, a command for controlling the operation of the motor 310 is generated and transmitted to the driver 320 based on the information.

In this case, if the identification marks are arranged at regular intervals, the optical sensor 330 may read them to generate, for example, a pulse signal. If the control unit 340 stores the number of pulse signals according to the desired tilt angle in advance, for example, if the number of pulse signals is stored in advance for each of the angles from the initial position to the maximum tilt angle, the control unit 340 generates the pulse signal. The tilt angle of the front panel 125 may be extracted simply by measuring the number of signals, and the operation of the motor 310 may be controlled based on the number of signals.

In addition, if the identification mark is in the form of a barcode, when the barcode is read through the optical sensor 330, the controller 340 may know the degree of tilt of the front panel 12. That is, the controller 340 stores the barcode signal corresponding to the tilt degree of the front panel 340 in advance, and then determines the tilt degree of the front panel 125 based on the barcode signal from the optical sensor 330 to determine the motor. A command for controlling the operation of 310 may be generated.

Although the configuration of the present invention has been described in detail, it is only for illustrating the present invention, and the protection scope of the present invention is not limited thereto, and the protection scope of the present invention is defined through the description of the claims.

As described above, according to the present invention, the tilt mechanism of the media reproducing apparatus for automobiles is counted as a pulse using an optical sensor, thereby enabling accurate position control of the tilt mechanism and improving durability of the tilt mechanism.

Claims (10)

As the front panel tilt control device, A motor operating in the forward or reverse direction, A motor driver to control an operation of the motor to tilt or return the front panel; An optical sensor for optically measuring the movement of the movable member for driving the tilt of the front panel; A control unit for generating a command for controlling the operation of the motor based on the movement degree of the moving member measured from the optical sensor to transmit to the motor drive unit Including but not limited to: The optical sensor measures the movement of the movable member by reading an identification mark formed in a bar code form according to the position of the movable member at regular intervals on a surface corresponding to the optical sensor of the movable member performing linear reciprocating motion. Front panel tilt control device. The method of claim 1, And said motor is a stepping motor. delete delete The method of claim 1, The identification mark is a front panel tilt control device in which the line is repeated at regular intervals on the surface corresponding to the optical sensor of the moving member. delete The method of claim 1, And the identification mark is printed in a sticker form and attached to a surface corresponding to the optical sensor of the moving member. The method of claim 1, The optical sensor reads the identification mark and transmits it to the control unit, And the control unit generates a command to control the operation of the motor by determining the current tilt degree of the front panel through the identification mark. The method of claim 5, The optical sensor forms a pulse signal based on the at least one identification mark, The controller may store the number of pulse signals in advance according to the degree of tilt of the front panel, and determine a degree of tilt of the front panel from the number of pulse signals from the optical sensor to control the operation of the motor. Front panel tilt control device to produce. The method of claim 1, The optical sensor reads the barcode form, The control unit may store a bar code signal corresponding to the degree of tilt of the front panel in advance, and generate a command to control the operation of the motor by determining the degree of tilt of the front panel from the bar code signal from the optical sensor. In-panel tilt control.

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