HUD (Head Up Display) mechanism

Abstract

The utility model relates to an HUD (Head Up Display) mechanism, and belongs to the technical field of HUD display. The device comprises a mounting shell, a PGU unit, a curved mirror rotationally mounted on the mounting shell, a positioning mirror mounted corresponding to the curved mirror, and a rotating mechanism for driving the curved mirror to rotate, wherein the mounting shell is provided with an image output port through which an image passes and is projected on a windshield; the rotating mechanism comprises a rotating driving part, a driving screw rod connected with an output shaft of the rotating driving part, a sliding seat in threaded fit with the driving screw rod and a guide rod used for guiding the sliding seat to slide, a rotating head is arranged on one side of the curved mirror, and an inserting groove allowing the rotating head to be inserted in is formed in the sliding seat. The HUD display mechanism has the effect of improving the adaptability of the HUD display mechanism to different drivers.

Description

Technical Field

[0001] This application relates to the field of HUD display technology, and in particular to HUD head-up display mechanisms. Background Technology

[0002] HUD (Head-Up Display) is a technology that projects key driving information, such as vehicle speed and navigation instructions, directly into the driver's line of sight.

[0003] In a HUD display, PGU stands for Power Generation Unit or Image Generation Unit, and it is one of the core components of the HUD system. Current HUD display devices typically have an optoelectronic display mounted on the dashboard, and the image generated by the PGG is displayed on this optoelectronic display.

[0004] Regarding the aforementioned technologies, optoelectronic display devices are generally fixed on the dashboard, resulting in images being displayed only in a specific area, which reduces adaptability to different drivers. Utility Model Content

[0005] To improve the adaptability of the HUD display mechanism to different drivers, this application provides a new HUD head-up display mechanism.

[0006] The HUD head-up display mechanism provided in this application adopts the following technical solution:

[0007] The HUD head-up display mechanism includes a mounting housing, a PGU unit, a curved mirror rotatably mounted on the mounting housing, a positioning mirror corresponding to the curved mirror, and a rotation mechanism for driving the curved mirror to rotate. The mounting housing has an image output port for an image to pass through and be projected onto the windshield.

[0008] The rotating mechanism includes a rotating drive component, a drive screw connected to the output shaft of the rotating drive component, a sliding seat threaded with the drive screw, and a guide rod for guiding the sliding seat to slide. A rotating head is provided on one side of the curved mirror, and the sliding seat has an insertion slot for the rotating head to be inserted.

[0009] By adopting the above technical solution, the PGU first emits the image to the positioning mirror, which then refracts the image onto the curved mirror. The curved mirror then refracts the image onto the windshield of the car, finally displaying the image on the windshield. The curved mirror is rotatably mounted on the mounting housing, and its rotation is achieved through a rotating mechanism. This allows the position of the image on the windshield to be changed, thus adapting to different drivers, improving the driving experience, eliminating the need for a photoelectric display device, simplifying the structure, and reducing the collision risk associated with the protruding dashboard.

[0010] Optionally, the mounting housing has a motor mount for mounting the rotary drive component, the motor mount is provided with a sliding groove for sliding the sliding seat, and the motor mount is provided with a mounting head on the side wall of the sliding groove for rotating the end of the drive screw.

[0011] By adopting the above technical solution, the rotating drive component is fixed to the motor base, the sliding seat is slidably installed on the motor base, and the two ends of the drive screw are respectively set on the mounting head and the rotating drive component, making the overall structure of the rotating mechanism more compact and easier to assemble.

[0012] Optionally, the motor base is provided with at least two positioning protrusions on the bottom wall of the sliding groove, and the end of the positioning protrusion is provided with a screw hole. The mounting housing has a fixing through hole corresponding to the positioning protrusion.

[0013] By adopting the above technical solution, the positioning protrusion and the fixing through hole are aligned and then the mounting housing and the motor base are fixed by bolts. The use of bolts makes the stability of the rotating mechanism within the mounting housing more reliable.

[0014] Optionally, positioning grooves are provided on opposite sides of the motor base, and positioning ridges that are inserted into the positioning grooves are provided inside the mounting housing.

[0015] By adopting the above technical solution, the cooperation of the positioning groove and the positioning ridge can achieve a positioning effect before the mounting housing and motor base are fixed, thereby improving the assembly efficiency of the motor base and the mounting housing.

[0016] Optionally, the motor base is provided with a mounting plate corresponding to the sliding groove, and the motor base is provided with a distance sensor abutting against the sliding base on the mounting plate.

[0017] By adopting the above technical solution, the distance sensor can monitor the sliding distance of the sliding seat in real time, making it easier for the driver to accurately adjust the image position.

[0018] Optionally, the curved mirror is provided with a rotating shaft at both ends, and the mounting housing is provided with a rotating seat for mounting the rotating shaft. The rotating head and the rotating shaft are arranged in parallel.

[0019] By adopting the above technical solution, the curved mirror is rotatably mounted on the mounting housing via a rotating shaft. The rotating base and the mounting housing are detachably connected, so that the curved mirror first mates with the rotating base before installation, and then the curved mirror and the rotating base are fixed to the mounting housing, which improves assembly efficiency.

[0020] Optionally, the mounting housing is provided with a rotation limiting groove for limiting the rotation angle of the curved mirror.

[0021] By adopting the above technical solution, the setting of the rotation limiting groove can limit the rotation angle of the curved mirror, preventing the curved mirror from rotating too much and causing the image to become blurry.

[0022] Optionally, the mounting housing has a lens slot for mounting the positioning mirror, and a lens bracket is provided on the side of the positioning mirror away from the curved mirror. The lens bracket is inserted into and positioned by the mounting housing.

[0023] By adopting the above technical solution, the positioning mirror is fixed to the mounting housing by the lens bracket, and the lens bracket and the mounting housing are snapped together, making it easy to assemble and disassemble the positioning mirror and the mounting housing.

[0024] Optionally, the mounting housing includes an upper housing, a lower housing, and an inner housing. The PGU unit is disposed at the bottom of the lower housing, and the inner housing is disposed at the bottom of the lower housing and covers the PGU unit. The curved mirror and the positioning mirror are both disposed in the lower housing, and the lower housing is made of aluminum alloy.

[0025] By adopting the above technical solution, the mounting housing is specifically divided into an upper housing, a lower housing, and an inner housing, which makes the assembly of the overall HUD display mechanism more convenient. The lower housing is made of aluminum alloy, which makes the heat dissipation effect of the PGU more ideal.

[0026] Optionally, the mounting housing is provided with a light shield at the image output port.

[0027] By adopting the above technical solution, the light shield can block and filter light at the image output port, reduce light interference, and improve image contrast and clarity.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. This application achieves the rotation of the curved mirror by setting a rotating mechanism, which can change the position of the image on the windshield, thereby adapting to different drivers, improving the driving experience, eliminating the photoelectric display device, making the structure simpler, and reducing the collision risk of the dashboard protruding outward;

[0030] 2. This application, through the cooperation of positioning protrusions, fixing through holes, positioning grooves, and positioning ridges, makes the assembly of the rotating mechanism and the mounting housing convenient, the connection strength good, and ensures the stability of the rotating mechanism;

[0031] 3. By setting a rotation limiting groove, this application can limit the rotation angle of the curved mirror, preventing the curved mirror from rotating too much and causing the image to become blurry. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0033] Figure 2 This is a schematic cross-sectional view of an embodiment of this application.

[0034] Figure 3 This is an exploded view of the positioning mirror and the lower housing according to an embodiment of this application.

[0035] Figure 4 This is a cross-sectional schematic diagram of the PGU unit in an embodiment of this application.

[0036] Figure 5 This is a schematic diagram of the curved mirror and rotating mechanism according to an embodiment of this application.

[0037] Figure 6 This is a schematic diagram of the rotating mechanism in an embodiment of this application.

[0038] Figure 7 This is a cross-sectional schematic diagram of the rotating mechanism and the lower housing after they are fitted together according to an embodiment of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Mounting housing; 11. Upper housing; 111. Image output port; 112. Light shield; 12. Lower housing; 121. Lens slot; 1211. Support column; 122. Fixing through hole; 123. Positioning ridge; 13. Inner housing; 131. Image input port; 132. Rotating seat; 133. Rotation limit groove; 2. PGU unit; 21. Unit housing; 22. Fixing bracket; 23. Cover plate; 231. Insertion opening; 24. Thermal insulation tape; 25. PCB board; 26. 1. Concentrating lens; 27. Screen; 28. First diaphragm; 29. ​​Concentrating lens; 210. Second diaphragm; 3. Curved mirror; 31. Rotating shaft; 32. Rotating head; 4. Positioning mirror; 5. Rotating mechanism; 51. Rotating drive component; 52. Drive screw; 53. Sliding seat; 531. Insertion slot; 54. Guide rod; 55. Motor seat; 551. Mounting head; 552. Positioning protrusion; 553. Positioning groove; 554. Sliding groove; 555. Mounting piece; 56. Distance sensor; 6. Lens bracket. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0041] This application discloses a HUD (Head-Up Display) mechanism.

[0042] Reference Figure 1 and Figure 2 The HUD (Head-Up Display) mechanism includes a mounting housing 1, a PGU (Power Generation Unit) 2, a curved mirror 3, and a positioning mirror 4. The X direction in the diagram is defined as the vertical direction. The mounting housing 1, along the X direction, comprises an upper housing 11 and a lower housing 12.

[0043] Reference Figure 2 and Figure 3 The PGU unit 2 includes a unit housing 21, a fixing bracket 22, and a cover plate 23. The unit housing 21 and the cover plate 23 are located on opposite sides of the fixing bracket 22, and the unit housing 21 is fixed to the fixing bracket 22, the cover plate 23, and the fixing bracket 22 by snap-fit.

[0044] Inside the mounting bracket 22, from bottom to top, are arranged heat-insulating tape 24, a PCB board 25, and a light-concentrating plate 26. The light-concentrating plate 26 is inserted and fixed to the mounting bracket 22, and the PCB board 25 is snapped and fixed to the mounting bracket 22. The heat-insulating tape 24 adheres to and covers the bottom of the PCB board 25.

[0045] Inside the unit housing 21, from top to bottom, are arranged a screen 27, a first diaphragm 28, a condenser lens 29, and a second diaphragm 210. The screen 27 and the first diaphragm 28 are located on the top opening side of the unit housing 21, while the condenser lens 29 and the second diaphragm 210 are located on the bottom opening side of the unit housing 21. The screen 27 is positioned and installed in the unit housing 21 and then pressed and fixed by a cover plate 23.

[0046] An inner housing 13 is bolted to the lower housing 12, forming a mounting chamber between the inner housing 13 and the lower housing 12 for mounting the PGU unit 2. The mounting chamber has an image input port 131 communicating with the inner cavity of the lower housing 12, and the image input port 131 is correspondingly mounted to the screen 27. The bottom of the fixing bracket 22 is fixed to the bottom of the lower housing 12 by bolts. The cover plate 23 also has a insertion opening 231 for positioning and insertion into the image input port 131, thereby improving the assembly efficiency of the PGU unit 2 and the mounting housing 1.

[0047] Reference Figure 2 and Figure 4 The positioning mirror 4 and the image input port 131 are set accordingly, and the positioning mirror 4 and the transmitting unit of the PGU unit 2 have a refraction angle so that the image emitted by the PGU unit 2 can be refracted on the positioning mirror 4.

[0048] The positioning mirror 4 is fixedly mounted with a lens bracket 6 on the side away from the PGU unit 2, and the positioning mirror 4 is fixed to the lower housing 12 by the lens bracket 6. The lower housing 12 has a lens groove 121 for positioning the positioning mirror 4, and a bracket post 1211 is provided on the opening edge of the lens groove 121 of the lower housing 12 to be inserted into the lens bracket 6. After the lens bracket 6 and the bracket post 1211 are inserted, the lens bracket 6 and the lower housing 12 are fixed by bolts.

[0049] Reference Figure 2 and Figure 5The curved mirror 3 is rotatably mounted inside the lower housing 12 and corresponds to the positioning mirror 4. The upper housing 11 covers the top opening of the lower housing 12 and has an image output port 111 that communicates with the inner cavity of the lower housing 12 for outputting images. A light shield 112 is also provided on the top of the upper housing 11 to shield the image output port 111, and the light shield 112 is fixed to the upper housing 11 with soft adhesive. The image refracted by the positioning mirror 4 is emitted to the curved mirror 3, and the image is directly projected onto the windshield from the image output port 111 through the refraction of the curved mirror 3.

[0050] The curved mirror 3 has a rotating shaft 31 integrally provided at both ends, and a rotating seat 132 that rotates with the rotating shaft 31 is installed in the inner housing 13. The rotating seat 132 is installed in the lower housing 12 by bolts.

[0051] Reference Figure 5 and Figure 6 The lower housing 12 is equipped with a rotation mechanism 5 that drives the curved mirror 3 to rotate, thereby adjusting the position of the image information on the windshield. The rotation mechanism 5 includes a rotation drive 51, a drive screw 52, ​​a sliding seat 53, and a guide rod 54. The rotation drive 51 is a conventional rotary motor, and the lower housing 12 has a motor mount 55 for the rotary motor to be fixedly installed.

[0052] The rotating drive component 51 is fixed to one end side wall of the motor base 55 by bolts, and the drive screw 52 and the output shaft of the rotating drive component 51 are fixed coaxially. A mounting head 551 is fixedly installed on the side of the motor base 55 away from the rotating drive component 51, and the mounting head 551 and the drive screw 52 are rotatably engaged.

[0053] Combination Figure 7 The motor base 55 has two positioning protrusions 552 spaced apart. The bottom end face of the positioning protrusions 552 has a threaded hole. The lower housing 12 has a fixing through hole 122 corresponding to the positioning protrusions 552. In order to facilitate the fixing of the motor base 55 and the lower housing 12, positioning grooves 553 are provided at both ends of the motor base 55 along its length. The lower housing 12 is provided with positioning ridges 123 that are inserted and matched with the positioning grooves 553.

[0054] The motor mount 55 has a sliding groove 554 between the mounting head 551 and the rotating drive member 51, and the sliding seat 53 is slidably mounted in the sliding groove 554. Guide rods 54 are disposed on both sides of the drive screw 52, ​​with their ends fixed to the opposite side walls of the sliding groove 554. The sliding seat 53 has guide holes penetrating both end faces and allowing the guide rods 54 to pass through. The sliding seat 53 also has a threaded hole between the two guide holes that mates with the drive screw 52.

[0055] The top of the sliding base 53 has an insertion slot 513, and the side wall of the curved mirror 3 has a rotating head 32 that inserts into the insertion slot 513. The rotating head 32 is located below the rotating shaft, and its end is rounded, which is inserted into the insertion slot. When the rotation drive 51 is activated, the sliding base 53 slides back and forth within the sliding base 53, and the sliding base 53 simultaneously drives the rotating head 32 to slide, so that the curved mirror 3 can rotate around the rotating shaft, thereby realizing the position adjustment of the image on the windshield.

[0056] The motor base 55 is also integrally provided with a mounting plate 555 corresponding to the sliding base 53, and a distance sensor 56 is fixedly mounted on the mounting plate 555. The end of the distance sensor 56 elastically abuts against the sliding base 53, and can always abut against the side wall of the sliding base 53 to monitor the sliding distance of the sliding base 53.

[0057] To limit the rotation angle of the curved mirror 3, the inner housing 13 also has a rotation limiting groove 133 for mounting the curved mirror 3. The bottom limit of the curved mirror 3 is arranged in the rotation limiting groove 133.

[0058] The implementation principle of the HUD head-up display mechanism in this application embodiment is as follows: After assembling the PGU unit 2, it is installed on the lower housing 12 and fixed with bolts. Then, the rotating mechanism 5, the motor base 55 and the distance sensor 56 are assembled and fixed on the lower housing 12. Then, the curved mirror 3 and the rotating base 132 are assembled, and the rotating head 32 is inserted into the sliding base 53. Finally, the positioning mirror 4 and the upper housing 11 are installed, and the light shield 112 is fixed to the image output port 111 with soft glue.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A HUD (Head-Up Display) mechanism, characterized in that, The device includes a mounting housing (1), a PGU unit (2), a curved mirror (3) rotatably mounted on the mounting housing (1), a positioning mirror (4) corresponding to the curved mirror (3), and a rotation mechanism (5) for driving the curved mirror (3) to rotate. The mounting housing (1) has an image output port (111) through which an image passes and is projected onto the windshield. The rotating mechanism (5) includes a rotating drive (51), a drive screw (52) connected to the output shaft of the rotating drive (51), a sliding seat (53) threaded with the drive screw (52), and a guide rod (54) for guiding the sliding seat (53) to slide. A rotating head (32) is provided on one side of the curved mirror (3), and the sliding seat (53) has an insertion slot (531) for the rotating head (32) to be inserted.

2. The HUD head-up display mechanism according to claim 1, characterized in that, The mounting housing (1) has a motor mount (55) for mounting the rotary drive (51), the motor mount (55) is provided with a sliding groove (554) for sliding the sliding seat (53), and the motor mount (55) is provided with a mounting head (551) on the side wall of the sliding groove (554) for rotating the end of the drive screw (52).

3. The HUD head-up display mechanism according to claim 2, characterized in that, The motor base (55) has at least two positioning protrusions (552) on the bottom wall of the sliding groove (554). The end of the positioning protrusion (552) is provided with a screw hole. The mounting housing (1) has a fixing through hole (122) corresponding to the positioning protrusion (552).

4. The HUD head-up display mechanism according to claim 3, characterized in that, The motor base (55) has positioning grooves (553) on both sides, and the mounting housing (1) has positioning ridges (123) that are inserted into the positioning grooves (553).

5. The HUD head-up display mechanism according to claim 2, characterized in that, The motor mount (55) is provided with a mounting plate (555) corresponding to the sliding groove (554), and the motor mount (55) is provided with a distance sensor (56) abutting against the sliding seat (53) on the mounting plate (555).

6. The HUD head-up display mechanism according to claim 1, characterized in that, The curved mirror (3) has a rotating shaft (31) at both ends. The mounting housing (1) is equipped with a rotating seat (132) for mounting the rotating shaft (31). The rotating head (32) and the rotating shaft (31) are arranged in parallel.

7. The HUD head-up display mechanism according to claim 1, characterized in that, The mounting housing (1) is provided with a rotation limiting groove (133) for limiting the rotation angle of the curved mirror (3).

8. The HUD head-up display mechanism according to claim 1, characterized in that, The mounting housing (1) has a lens slot (121) for mounting the positioning mirror (4). A lens bracket (6) is provided on the side of the positioning mirror (4) away from the curved mirror (3). The lens bracket (6) is inserted into the mounting housing (1) for positioning.

9. The HUD head-up display mechanism according to claim 1, characterized in that, The mounting housing (1) includes an upper housing (11), a lower housing (12) and an inner housing (13). The PGU unit (2) is located at the bottom of the lower housing (12). The inner housing (13) is located at the bottom of the lower housing (12) and covers the PGU unit (2). The curved mirror (3) and the positioning mirror (4) are both located on the lower housing (12). The lower housing (12) is made of aluminum alloy.

10. The HUD head-up display mechanism according to claim 1, characterized in that, The mounting housing (1) is provided with a light shield (112) at the image output port (111).

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