JP2018002050A - Head-up display - Google Patents

Abstract

Provided is a pop-up storage type HUD that can cope with a plurality of types of driving of a combiner with a simple structure, and thus can achieve a compact overall arrangement. A frame 2 in which a plurality of guide shafts 3 are arranged between upper and lower flanges 2b and 2c, and a lead screw 5 rotatably supported on the frame in parallel with the guide shafts. A unit case 4 which is provided so as to be movable in the vertical direction along the guide shaft of the frame and to which a nut 9 screwed with the lead screw is fixed, a first motor 6 which rotationally drives the lead screw, and a unit case A rotating shaft 10 disposed horizontally in the shaft and supported so as to be rotatable about an axis, and a combiner 13 which is integrated with the outer periphery of the rotating shaft and has a plate surface disposed along the vertical direction. The second motor 16 is provided in the unit case and rotates the rotation shaft via a rotation mechanism. [Selection] Figure 1

Description

  The present invention relates to a head-up display that is incorporated in a dashboard of a car or the like and displays an image on a combiner, and particularly relates to a pop-up storage type head-up display that drives a combiner up and down and stores it in a case body. .

  2. Description of the Related Art In recent years, a head-up display (hereinafter abbreviated as HUD) that reflects an image on a concave plate-shaped combiner front and displays driving information in a driver's field of view has been adopted in various vehicles such as passenger cars. ing.

  6 and 7 show a rotary storage type HUD in which a combiner is rotated and stored in the case main body 20 among HUDs having a conventional combiner mounted in a dashboard of a car. A concave plate-shaped combiner 21 and a projection unit 22 for projecting an image toward the combiner 21 are incorporated in the case body 20 having an opening on the upper surface. .

  Here, the combiner 21 is integrally provided with a rotation shaft 23 along one side thereof, and is located at a position where the case body 20 is closed by the rotation shaft 23 and a position where the case body 20 stands from the upper surface. It is provided so as to be freely rotatable.

  A helical gear 24 is provided at one end of the rotating shaft 23, and a worm gear 26 provided on the output shaft of the stepping motor 25 is screwed to the helical gear 24. A spiral spring 27 is provided at the other end of the rotating shaft 23 to urge the rotating shaft 23 around the axis in a direction in which the combiner 21 closes the opening.

As a result, the combiner HUD projects the image from the projection unit 22 by raising the combiner 21 by the stepping motor 25 during use, and stores the image in the opening of the case body 20 by the urging force of the spiral spring 27 after use. It has become.
The configuration of the HUD incorporated in such a dashboard is also disclosed in, for example, Patent Document 1 below.

JP 11-091403 A

  On the other hand, in addition to the rotary storage type HUD in which the combiner 21 having the above-described configuration is rotated and stored in the case body 20, the pop-up storage in which the combiner 30 is driven up and down and stored in the case body 31 as shown in FIG. A type of HUD has also been developed.

  In such a pop-up storage type HUD, when the image is projected from the projection unit in the case body 31 after the combiner 30 is driven up and down, the image is received by rotating the combiner 30 around the lower end. It is necessary to adjust the angle (tilt adjustment).

  For this reason, if a plurality of driving operations for the combiner 30 are performed by a single stepping motor such as the rotary storage type HUD shown in FIGS. 6 and 7, the structure becomes extremely complicated and the size of the apparatus becomes large. There was also a problem of inviting it.

  The present invention has been made in view of the above circumstances, and provides a pop-up storage type HUD that can handle a plurality of types of drive of a combiner with a simple structure, and thus can achieve a compact overall arrangement. It is an object to do.

  In order to solve the above problems, the invention according to claim 1 is a frame in which a plurality of guide shafts are arranged in parallel between upper and lower flanges inside a case body in which an opening is formed in the top plate. A lead screw disposed in parallel to the guide shaft and supported rotatably on the frame; and a vertically movable lead screw along the guide shaft of the frame; and screwed with the lead screw. A unit case to which a nut is fixed, a first motor that rotationally drives the lead screw, a rotation shaft that is disposed in the unit case in a horizontal direction and is rotatably supported around an axis, The lower end is integrated with the outer periphery of the dynamic shaft, and the combiner is arranged with the plate surface along the vertical direction, and the rotational shaft is provided via the rotational mechanism provided in the unit case. And a second motor to be moved, wherein the lead screw is rotated by the first motor to raise and lower the unit case so that the combiner is raised and lowered from the opening. Is.

  According to a second aspect of the present invention, in the first aspect of the present invention, the rotating mechanism meshes with the worm gear fixed to the output shaft of the second motor and the worm gear and rotates the rotating mechanism. And a helical gear for rotating the moving shaft.

  In the first or second aspect of the invention, when the lead screw is rotated by the first motor, the unit case to which the nut screwed to the lead screw is fixed rises along the guide shaft, and the unit case A combiner provided at the top passes through the opening and protrudes outside the case body.

  In this state, the second motor provided in the unit case rotates the rotating shaft in the unit case and rotates the combiner around the rotating shaft, thereby receiving the image projected from the projection unit. Adjust the shadow angle.

  After using the HUD, when the combiner is raised by the second motor and the lead screw is rotated in the opposite direction by the first motor, the unit case descends along the guide shaft and the combiner opens. It is stored in the case body through the section.

  As described above, by using the first and second motors, it is possible to cope with a plurality of types of driving such as the vertical movement and rotation of the combiner with a simple structure, and thus the overall arrangement can be made compact. .

  According to the second aspect of the present invention, as a rotating mechanism for rotating the combiner, a worm gear fixed to the output shaft of the second motor, and the rotating shaft meshing with the worm gear and the rotating shaft. Since the rotating helical gear is used, it is possible to prevent the combiner from rotating by the worm gear even if an external force acts in the rotating direction from the combiner side after adjusting the receiving angle of the combiner. it can.

It is a side view which shows the state which made the combiner protrude from the case main body in one Embodiment of HUD which concerns on this invention. It is a perspective view of the principal part which shows. It is a perspective view of the principal part of FIG. It is the perspective view which abbreviate | omitted the flame | frame and unit case of FIG. It is a perspective view of the principal part which shows the state which accommodated the combiner of FIG. 1 in the case main body. FIG. 5 is a side view of FIG. 4. It is a perspective view which shows schematic structure of the conventional rotation storing type HUD. It is a perspective view of the principal part of FIG. It is a perspective view which shows the conventional pop-up storage type HUD.

1 to 5 show an embodiment of a pop-up storage type HUD according to the present invention.
In the case body 1a of the HUD 1, an opening is formed in the top plate 1b, and a frame 2 is fixed inside. The frame 2 is a plate-like member in which an upper flange 2b and a lower flange 2c that are bent horizontally are formed at the upper and lower ends of the wall plate 2a, and two guides are provided between the upper and lower flanges 2b and 2c. The shafts 3 are provided at intervals in the horizontal direction.

  And along these guide shafts 3, a box-shaped unit case 4 whose upper surface is open is provided so as to be movable up and down. A lead screw 5 is disposed between the guide shafts 3 through the unit case 4, and upper and lower end portions thereof are rotatably supported by the upper and lower flanges 2b and 2c, respectively. On the other hand, a stepping motor (first motor) 6 is fixed adjacent to the lower end of the lead screw 5 on the lower surface side of the lower flange 2c, and a gear 7 is fixed to an output shaft protruding on the upper surface side of the lower flange 2c. Has been.

  The gear 7 is screwed to a gear 8 fixed to the lower end portion of the lead screw 4, and a nut 9 fixed to the unit case 4 is screwed to the lead screw 5. Thus, when the stepping motor 6 is rotated, the unit case 4 to which the lead screw 5 is rotated and the nut 9 screwed with the lead screw 5 is fixed is moved up and down in the case main body 1a.

  In the unit case 4, a rotation shaft 10 is disposed in the horizontal direction and is supported so as to be rotatable around an axis. A base portion 11 having a diameter larger than that of the rotation shaft 9 is fixed to the central portion of the rotation shaft 9. The base portion 11 has a screw 11 a formed on the lower half of the circumference thereof, and a flat plate combiner holder 12 provided in parallel with the rotary shaft 10 on the outer circumference of the upper side.

  The combiner holder 12 is arranged with the upper part protruding from the upper opening of the unit case 4, and the lower end part of the combiner 13 arranged with the plate surface along the vertical direction is attached to the combiner holder 12. Yes.

  On the other hand, a pinion gear 14 that engages with the screw 11a is rotatably provided in the unit case 4 with its axis line parallel to the rotation shaft 10, and a helical gear 15 having a larger diameter is provided on the pinion gear 14. It is integrally formed.

  Further, a tilting stepping motor (second motor) 16 is mounted in the unit case 4 with its axis line directed in the vertical direction. A worm gear 17 fixed to the output shaft of the stepping motor 16 is meshed with the helical gear 15. The screw 11 a of the base 11, the pinion gear 14, the helical gear 15, and the worm gear 17 constitute a turning mechanism for turning the turning shaft 9.

  In the case main body 1a, a projection unit (not shown) for projecting an image toward the combiner 13 is disposed adjacent to the lift areas of the frame 2 and the unit case 4. .

  In the pop-up storage type HUD 1 configured as described above, when the lead screw 5 is rotated by the stepping motor 6, the unit case 4 to which the nut 9 screwed to the lead screw 5 is fixed rises along the guide shaft 3. As shown in FIGS. 1 to 3, the combiner 13 provided on the upper part of the unit case 4 passes through the opening and protrudes to the outside of the case body 1 a.

  In this state, by rotating the helical gear 15 that meshes with the worm gear 17 by the tilting stepping motor 16 provided in the unit case 4, the pivot shaft 10 that meshes with the pinion gear 14 is rotated and the combiner is rotated. By rotating 13, the inclination angle of the image projected from the projection unit in the receiving direction is adjusted.

  After use, the combiner 13 is raised by the tilting stepping motor 16, and the lead screw 5 is rotated in the opposite direction by the stepping motor 5, thereby lowering the unit case 4 along the guide shaft 3. 4 and FIG. 5, the combiner 13 is stored in the case main body 1a.

  As described above, according to the pop-up storage type HUD 1, by using the two stepping motors 6 and 16, it is possible to cope with a plurality of types of driving such as the vertical movement and rotation of the combiner 13 with a simple structure. Therefore, the overall arrangement can be made compact.

  In addition, a worm gear 17 is provided on the output shaft of the tilting stepping motor 16, the helical gear 15 is engaged with the worm gear 17, the helical gear 15 is integrated, and the rotating shaft 10 is rotated by the pinion gear 14. Therefore, after adjusting the receiving angle of the combiner 13, even when an external force is applied in the rotation direction from the combiner 13 side, the stepping 16 is prevented from rotating by the worm gear 17 and the combiner 13 is prevented from rotating. it can.

1 Pop-up storage type HUD
1a Case body 1b Top plate 2 Frame 2b Upper flange 2c Lower flange 3 Guide shaft 4 Unit case 5 Lead screw 6 Stepping motor (first motor)
9 Nut 10 Rotating shaft 13 Combiner 15 Helical gear 16 Tilt stepping motor (second motor)
17 Worm gear

Claims (2)

  A frame in which a plurality of guide shafts are arranged in parallel between the upper and lower flanges inside the case body having an opening formed in the top plate, and the frame is arranged in parallel with the guide shafts so as to be rotatable. A lead screw supported on the frame, a unit case which is provided so as to be movable in the vertical direction along the guide shaft of the frame, and which is fixed to a nut screwed with the lead screw, and rotationally drives the lead screw. A first motor, a rotation shaft disposed horizontally in the unit case and supported so as to be rotatable about an axis, a lower end portion is integrated with an outer periphery of the rotation shaft, and a plate surface is provided. A combiner disposed along the vertical direction; and a second motor that is provided in the unit case and rotates the rotation shaft via a rotation mechanism. Head-up display, characterized in that said combiner by lifting the unit case by rotating the lead screw and so as to rise from, the opening by chromatography data.   2. The rotating mechanism includes a worm gear fixed to the output shaft of the second motor, and a helical gear that meshes with the worm gear and rotates the rotating shaft. The head-up display described in 1.

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