JP4256321B2 - Panel drive mechanism for electronic equipment - Google Patents

Description

  The present invention relates to an electronic apparatus, and more particularly to a panel driving mechanism thereof.

  An example of a panel drive mechanism provided with a display unit of a conventional in-dash type in-vehicle TV will be described with reference to FIG. The chassis 1 shown in FIG. 6 is fixed inside a housing (not shown). The shafts 1 a and 1 a erected on the chassis 1 pass through guide grooves 2 a provided on the slider 2, and the slider 2 is supported by the chassis 1 so as to be movable in the front-rear direction.

  A gear 10 a rotated by a motor 10 fixed to the chassis 1 meshes with a rack 2 g provided on the slider 2, and the slider 2 is driven in the front-rear direction by the motor 10. The panel 3 provided with the display unit is rotatably supported by a shaft 2e erected on the slider 2.

  A final gear 21 rotated by a motor 20 fixed to the slider 2 meshes with a gear 3b fixed to the panel 3. The shaft 2e and the gear 3b are arranged coaxially. The panel 3 is rotated around the shaft 2e by the rotation of the motor 20, but the slider 3 is in the horizontal position in the state where the slider 2 is rearward (hereinafter, the inner direction of the casing is referred to as the rear and the forward direction of the casing is the front. Is moved into the panel 3. When in use, the slider 2 is projected forward of the housing, and the panel 3 is rotated to stand.

  The panel drive mechanism described above requires a motor 10 that drives the slider 2, a motor 20 that rotates the panel 3, and a drive mechanism that is driven by the respective motors. This increases the manufacturing cost and also requires the necessary space. It was getting bigger.

  Furthermore, if a drive mechanism for rotating the panel is provided only on one side of the panel, the driven side is weak and the driven side is easily bent. In order to drive on both sides of the panel, a drive shaft extending on both sides of the panel is required, which causes a problem that a space for arranging the drive shaft is required.

In the display unit opening / closing device proposed in Japanese Patent Laid-Open No. 6-199187, the rotating speed of the display unit (panel) is reduced in the vicinity of adjusting the position of the display unit (panel). Similarly to the example, the base (slider) and the display unit (panel) are driven by separate drive mechanisms, and there is a problem similar to the conventional one shown in FIG.
Japanese Patent Laid-Open No. 6-199187, paragraphs 0019 and 0020, FIGS. 1 and 3

  The present invention has been made in view of the above points, and an object of the present invention is to provide a panel drive mechanism for an electronic device that can be moved in and out of the casing of the panel only by driving a slider. Is to provide.

  The panel drive mechanism of the electronic device according to the present invention is configured such that the panel is rotatably supported by a slider that is movable in the front-rear direction with respect to the chassis fixed inside the housing, and the panel is in a horizontal posture in the state where the panel is in a horizontal posture. In a panel drive mechanism of an electronic device in which a slider is moved in and out of the housing and the panel is projected from the housing and rotated to stand, the panel is urged by a first spring in a horizontal posture direction. The lever is pivotally supported on the panel, the lock arm is pivotally supported on the chassis, and the first abutting portion provided on the lock arm is in contact with the lever. The panel is rotated in the upright direction by the backward movement of the slider in the housing direction.

  Further, in the panel drive mechanism of the electronic device, the first abutting portion of the lock arm is pressed by a first cam provided on the slider pushing a second abutting portion provided on the lock arm. The lock arm is rotated in the direction in which the lever comes into contact with the lever, and the second contact portion is pushed by a second cam provided on the slider, whereby the first contact portion of the lock arm is moved. It is configured to rotate in a direction away from the lever.

  Further, in the panel drive mechanism of the electronic device, the lock arm is configured to be reversely biased by a reversal spring in one of a direction in contact with the lever and a direction away from the lever.

  Further, in the panel drive mechanism of the electronic device, the lock arm is urged by a second spring in a direction approaching the chassis in the rotation axis direction, and an inclined surface is provided behind the first cam of the slider. When the second abutting portion of the lock arm is located behind the inclined surface and the slider moves rearward, the inclined surface pushes the second abutting portion to push the lock arm. The slider is moved against the elastic force of the second spring, and the slider can be moved so that the second contact portion is positioned in front of the first cam.

  According to the panel drive mechanism of the electronic apparatus of the present invention, the panel can be erected by the movement of the slider that moves the panel in and out of the housing. Therefore, the dedicated motor for rotating the panel and the rotation of the motor are transmitted. A drive mechanism is not required, and the mechanism can be configured simply.

  It is also possible to drive the panel on both sides without providing a drive mechanism on both sides of the panel that transmits the rotation of a dedicated motor for rotating the panel. Can be supported.

  The best mode for carrying out the present invention will be described below with reference to examples.

  1 is a plan view showing a panel drive mechanism of an in-vehicle electronic device according to a first embodiment of the present invention with some members removed or seen through, and FIG. 2A is a partial view in the direction of arrow A in FIG. FIG. 2B is a cross-sectional view taken along the line BB in FIG. 2A, and FIG. 2C is a cross-sectional view taken along the line CC in FIG. 2A. 3 to 5 are diagrams showing other states of the portion shown in FIG.

  The chassis 1 shown in the figure is fixed inside a housing (not shown). The shafts 1a, 1a,... Erected on the chassis 1 pass through guide grooves 2a, 2a, etc. provided on the slider 2, and the slider 2 is supported by the chassis 1 so as to be movable in the front-rear direction.

  A motor 10 fixed to the chassis 1 rotates a final gear 11 rotatably supported by the chassis 1 via a speed reduction mechanism. The final gear 11 meshes with a rack 2g provided on the slider 2, and the motor 10 drives the slider 2 in the front-rear direction.

  The specific position of the slider 2 is detected by a photo sensor or micro switch, but these photo sensor or micro switch are not shown. An arc-shaped first cam 2b and a second cam 2c are formed in the lower rear portion of the slider 2, and an inclined surface 2d is formed behind the first cam 2b.

  The members described below are provided symmetrically on both sides of the chassis 1, but only one of them will be described. A panel 3 provided with a display unit (LCD) is rotatably supported on a shaft 2e erected on a slider 2. A first spring 6 composed of a torsion coil spring is fitted on the shaft 2e, locks the panel 3 and the slider 2, and urges the panel 3 in the horizontal posture position direction. When the panel 3 is in the horizontal posture, it abuts against a stopper (not shown) and the position is stabilized.

  A shaft 3 a erected on the panel 3 supports the lever 4 in a freely rotatable manner. A shaft 2 f erected on the slider 2 is engaged with a groove 4 b provided on the lever 4. When the is rotated, the parallel state with the side surface of the panel 3 is maintained. An arc-shaped recess 4 a is formed at the tip of the lever 4.

  A lock arm 5 is rotatably supported on a shaft 1 b erected on the chassis 1 and is urged toward the chassis 1. That is, a second spring 7 composed of a compression coil spring is fitted between the washer 8 and the lock arm 5 which are locked to the flange portion of the shaft 1b, and the second spring 7 attaches the lock arm 5 to the chassis. Energizing towards 1.

  A shaft 5a that abuts against the recess 4a of the lever 4 is provided upright at one end of the lock arm 5, and the first cam 2b and the second cam 2c of the slider 2 are provided at the other end of the lock arm 5. An abutting shaft 5b is provided upright. A reversing spring 9 that engages the lock arm 5 and the chassis 1 biases the lock arm 5 in either the clockwise direction or the counterclockwise direction.

  Next, the operation of the panel drive mechanism having the above configuration will be described. When the panel 3 is housed in the housing, the slider 2 is located at the rearmost position as shown in FIGS. 1 and 2A, and the panel 3 is in a horizontal posture.

  When a panel entry / exit button (not shown) is pressed in this state, the signal is input to a control unit (not shown), and the control unit causes the motor 20 to rotate forward. The slider 2 moves forward by the forward rotation of the motor 20. When the slider 2 moves forward, the first cam 2b pushes down the shaft 5b of the lock arm 5, and the lock arm 5 is rotated clockwise. When the lock arm 5 is rotated clockwise until it passes a predetermined position, the reversing spring 9 is urged clockwise and presses the lock arm 5 against a stopper (not shown).

  The position of the slider 2 that rotates the lock arm 5 in this way is detected by a photo sensor (not shown). When a signal from the photo sensor is input to the control unit, the control unit stops the motor 20 and then The motor 20 is reversed. When the slider 2 moves backward, the recess 4a of the lever 4 is engaged with the shaft 5a of the lock arm 5 as shown in FIG.

  FIG. 3A shows a state immediately before the recess 4 a of the lever 4 is engaged with the shaft 5 a of the lock arm 5. Since the lock arm 5 is stationary relative to the chassis 1 with the recess 4a of the lever 4 engaged with the shaft 5a of the lock arm 5, the movement of the lever 4 is restricted so as to rotate around the shaft 5a. Is done.

  Then, the shaft 3a of the panel 3 that moves together with the slider 2 applies the clockwise turning force to the lever 4, so that the lever 4 rotates clockwise, and the panel 3 is resisted against the elasticity of the second spring 6. Turn clockwise.

  Thus, when the slider 2 moves backward, the panel 3 passes through the position shown in FIG. 3B and is rotated to the fixed position in the use state shown in FIG. Since the groove 4b has a shape of a locus drawn on the lever 4 by the shaft 2f at this time, the engagement between the groove 4b and the shaft 2f does not hinder the movement of the lever 4 and the panel 3.

  The position of the slider 2 when the panel 3 is in a fixed position in use is detected by a photo sensor (not shown), and the motor 10 is stopped. This state is shown in FIG. The slider 2 may be stopped at a plurality of positions, or the motor 10 may be rotated only while the push button is being pressed so that the inclination angle in use of the panel 3 can be selected.

  4A, when the panel entry / exit button is pressed, the signal is input to a control unit (not shown), and the control unit causes the motor 20 to rotate forward. The slider 2 moves forward by the forward rotation of the motor 20. At this time, the panel 3 is brought into a horizontal posture by the first spring 6.

  The slider 2 advances to the most advanced position shown in FIG. 5A via the position shown in FIG. 4B, and the motor 1 overcurrent is generated when the shaft 1a pushes the right end of the guide groove 2a of the slider 2. It is detected and the motor 10 is stopped.

  During this time, the second cam 2c pushes up the shaft 5b of the lock arm 5 and the lock arm 5 is rotated counterclockwise. When the lock arm 5 is rotated counterclockwise until it passes a predetermined position, the reversing spring 9 biases the lock arm 5 counterclockwise, and presses the lock arm 5 against a stopper (not shown). To do.

  After the slider 2 stops at the most advanced position shown in FIG. 5A, the control unit reverses the motor 20. The slider 2 moves backward by the reverse rotation of the motor 20. At this time, the inclined surface 2 d of the slider 2 pushes up the shaft 5 b of the lock arm 5 and moves the lock arm 5 in a direction away from the chassis 1 against the elasticity of the second spring 7.

  When the shaft 5b gets over the rear portion of the first cam, the first cam 2b is positioned behind the shaft 5b. Thereafter, the slider 2 continues to move back to the last retracted position shown in FIG. In this state, the panel 3 is housed inside the housing, which is the same state as the initial state shown in FIG.

  The embodiment is configured as described above, but the invention is not limited to this. For example, the panel is not limited to the one holding the LCD, and the invention is applied to a panel provided only with a lighting display unit and an operation knob. Can do.

  Further, when the rigidity of the panel and its support mechanism is high, the effect of the present invention can be obtained even if a mechanism for rotating the panel is provided only on one side of the panel.

It is a top view which shows the panel drive mechanism of the vehicle-mounted electronic device which is Example 1 of this invention remove | eliminating or seeing through a part member. 2A is a view showing a part of the member in the A direction arrow view in FIG. 1, FIG. 2B is a cross-sectional view taken along the line BB in FIG. 2A, and FIG. It is CC sectional drawing in 2 (a). 3A is a diagram showing another state of the portion shown in FIG. 2A, and FIG. 3B is a diagram showing still another state of the portion shown in FIG. 4A is a diagram showing still another state of the portion shown in FIG. 2A, and FIG. 4B is a diagram showing still another state of the portion shown in FIG. FIG. 5A is a diagram showing still another state of the portion shown in FIG. 2A, and FIG. 5B is a diagram showing still another state of the portion shown in FIG. It is a side view which shows a part member transparently and shows the example of the panel drive mechanism of the conventional in-dash type vehicle-mounted TV.

Explanation of symbols

1 chassis, 1a, 1b shaft 2 slider, 2a guide groove, 2b first cam, 2c second cam, 2d inclined surface 2e, 2f shaft, 2g rack 3 panel, 3a shaft, 3b gear 4 lever, 4a dent, 4b groove 5 lock arm, 5a, 5b shaft 6 first spring 7 second spring 8 washer 9 reversing spring 10 motor, 10a gear 11 final gear 20 motor 21 final gear

Claims (4)

A panel is rotatably supported by a slider that is movable in the front-rear direction with respect to a chassis fixed inside the casing, and the slider is moved in and out of the casing in a state where the panel is in a horizontal posture. In a panel drive mechanism of an electronic device that stands up by rotating the panel in a state of protruding from a housing, the panel is biased by a first spring in a horizontal posture direction, and a lever is rotatable on the panel. The lock arm is rotatably supported by the chassis, and the first abutting portion provided on the lock arm and the lever are in contact with each other toward the rear in the housing inner direction of the slider. A panel drive mechanism for an electronic device, wherein the panel is rotated in a standing direction by movement of the electronic device. When the first cam provided on the slider pushes the second contact portion provided on the lock arm, the lock arm moves in the direction in which the first contact portion of the lock arm contacts the lever. So that the first abutting portion of the lock arm is pivoted away from the lever by pressing the second abutting portion with a second cam provided on the slider. The panel drive mechanism of the electronic device of Claim 1 comprised. The panel drive mechanism of the electronic device of Claim 2 comprised so that the said lock arm might be reversely urged | biased in any one of the direction contact | abutted with the said lever by the reversing spring, and the direction away from the said lever. The lock arm is urged by a second spring in a direction approaching the chassis in the rotational axis direction, an inclined surface is provided behind the first cam of the slider, and the second contact of the lock arm is provided. When the slider is moved rearward when the contact portion is positioned behind the inclined surface, the inclined surface pushes the second contact portion to resist the lock arm against the elasticity of the second spring. 4. The panel drive mechanism for an electronic device according to claim 3, wherein the slider can be moved so that the second abutting portion is moved in front of the first cam.

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