Electric and manual combined adjustment mechanism HUD test platform

Abstract

The utility model discloses a kind of electric and manual composite adjusting mechanism HUD test platform, including base, windshield and secondary reflector, secondary reflector is located below windshield, rotating support is equipped on base, secondary reflector is movably connected on rotating support, transmission support is equipped at the bottom of secondary reflector, gear plate is equipped on transmission support, adjusting assembly is equipped below secondary reflector, using the electric and manual composite adjusting mechanism HUD test platform of the utility model, with the advantages of convenient operation, high test precision, low test interruption risk and low cost.

Description

Technical Field

[0001] This utility model belongs to the field of HUD testing technology. Specifically, this utility model relates to a HUD testing platform with an electric and manual combined adjustment mechanism. Background Technology

[0002] HUD technology has expanded from the military to the automotive field, and its testing platforms require angle adjustment of the secondary reflector to adapt to different eye box ranges. In existing technologies, most testing platforms employ a fully electric adjustment scheme (such as motor + gear / screw drive). While this achieves automated control, it suffers from the following problems: motor adjustment often experiences positional misalignment or inaccurate reset, requiring repeated calibration; pure electric structures are costly, complex in integration, and lack manual backup solutions; and in open-loop control mode, the efficiency of optical parameter testing is significantly affected by adjustment accuracy.

[0003] Disadvantages of existing technology: 1. Insufficient precision of automatic adjustment: Traditional electric solutions use open-loop control, and the motor step size error leads to incomplete adjustment. After reset, the position offset can reach ±0.5°.

[0004] 2. Reliability defects: The pure electric structure has no manual backup, and cannot be adjusted in case of motor or circuit failure, resulting in a high risk of test interruption.

[0005] 3. Cost and efficiency conflict: The whole machine electric adjustment requires a matching motor, gear set, control circuit, etc., which is more than 3 times more expensive than the manual solution, and the debugging procedure is complicated.

[0006] Utility model patent CN206132356U, published on April 26, 2017, discloses a HUD image testing device, which includes an image comparison module located at one end of a vibration isolation module, an image detection module located at the other end of the vibration isolation module, a windshield mounting module located between the image comparison module and the image detection module, and a HUD mounting module located below the windshield mounting module. However, this HUD image testing device does not completely solve the aforementioned technical problems. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a power-operated and manual combined adjustment mechanism HUD test platform that is easy to operate, has high testing accuracy, low risk of test interruption, and low cost.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The electric and manual combined adjustment mechanism HUD test platform includes a base, a windshield, and a secondary reflector. The secondary reflector is located below the windshield. A rotating bracket is provided on the base, and the secondary reflector is movably connected to the rotating bracket. A transmission bracket is provided at the bottom of the secondary reflector, and a toothed plate is provided on the transmission bracket. An adjustment component is provided below the secondary reflector.

[0009] The adjustment component includes a motor mounted on a base. The motor includes an output shaft with a locking block at the end of the output shaft. A clutch is mounted on the base with a sliding groove at the top of the clutch. A movable handle is slidably connected to the sliding groove. A gear and a fixing block are respectively provided on both sides of one end of the movable handle. The gear and the fixing block are rotatably connected to the movable handle. A locking groove corresponding to the locking block is provided in the middle of the fixing block.

[0010] The adjustment assembly also includes an adjustment screw, a support seat is provided on the base, a nut is provided on the support seat, the adjustment screw cooperates with the nut, the adjustment screw is horizontally set, and one end of the adjustment screw abuts against the transmission bracket.

[0011] The secondary reflector has cylindrical shafts at both ends, and the secondary reflector is hinged to the rotating bracket through the cylindrical shafts. An angle encoder is connected to the cylindrical shaft near the motor. A controller is also provided on the base, and the angle encoder is electrically connected to the controller and the motor.

[0012] An extension plate is fixedly connected to the other end of the adjusting screw.

[0013] One end of the movable handle has a T-shaped structure.

[0014] The transmission bracket is a Z-shaped sheet metal part, and the transmission bracket is provided with a connection hole.

[0015] The technical advantages of this invention are as follows: The HUD test platform employing the electric-manual hybrid adjustment mechanism of this invention utilizes a hybrid drive structure for the angle adjustment of the secondary reflector. Electric drive and manual adjustment are switched via a clutch, forming an adjustment system that is "electrically driven as the primary mode and manually driven as the secondary mode." This facilitates debugging and minimizes the risk of test interruption. The electric mode adjustment enables closed-loop feedback control; the angle encoder and controller are combined to achieve closed-loop adjustment of "command-execution-feedback," resolving issues of position offset and adjustment accuracy. The electric drive device adopts a modular design, offering strong compatibility and low cost. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following: Figure 1 This is a schematic diagram of the structure of the HUD test platform with electric and manual combined adjustment mechanism of this utility model; Figure 2This is a partial structural schematic diagram of the electric and manual adjustment components of this utility model; Figure 3 This is a schematic diagram of the connection of a portion of the electric adjustment component of this utility model; Figure 4 This is a schematic diagram of the structure of the motor and clutch of this utility model.

[0017] The following are labeled in the diagram: 1. Base; 11. Rotating bracket; 12. Support base; 13. Controller; 14. Windshield bracket; 2. Windshield; 3. Secondary reflector; 31. Cylindrical shaft; 32. Angle encoder; 33. Transmission bracket; 34. Gear plate; 35. Connecting hole; 36. Primary reflector; 37. LCD light-emitting surface; 4. Motor; 41. Output shaft; 42. Locking block; 43. Clutch; 44. Slide groove; 45. Moving handle; 46. Gear; 47. Fixing block; 48. Slot; 5. Adjusting screw; 51. Nut; 52. Extension plate. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this invention, and to facilitate its implementation.

[0019] like Figure 1 As shown, the electric and manual combined adjustment mechanism HUD test platform includes a base 1, a windshield 2, and a secondary reflector 3. The secondary reflector 3 is located below the windshield 2. A rotating bracket 11 is provided on the base 1, and the secondary reflector 3 is movably connected to the rotating bracket 11. A transmission bracket 33 is provided at the bottom of the secondary reflector 3, and a toothed plate 34 is provided on the transmission bracket 33. An adjustment component is provided below the secondary reflector 3. In the above structure, the windshield 2 is mounted on the base 1 via a windshield bracket 14. The base 1 is a rectangular metal plate, and its four corners are fixed to the test platform surface by M6 adjusting screws 5. A T-slot is provided on the upper surface for installing other components. A primary reflector 36 and an LCD light-emitting surface 37 are also provided on both sides of the secondary reflector 3 to meet various testing requirements. The rotating bracket 11 is an L-shaped aluminum alloy part. The bottom is fixed to the middle right position of the base 1 by two M4 adjusting screws 5. Two cylindrical holes with a diameter of 10mm are opened on the vertical surface of the top to support the cylindrical shafts 31 at both ends of the secondary reflector 3. The two ends of the secondary reflector 3 are Φ10mm×15mm cylindrical shafts 31. The two cylindrical shafts 31 are respectively inserted into the holes of the two rotating brackets 11 to meet the requirements of rotation and support.

[0020] like Figures 2 to 4As shown, the adjustment assembly includes a motor 4, which is mounted on a base 1. The motor 4 includes an output shaft 41, with a locking block 42 at the end of the output shaft 41. A clutch 43 is mounted on the base 1, with a sliding groove 44 at the top of the clutch 43. A movable handle 45 is slidably connected to the sliding groove 44. Gears 46 and fixed blocks 47 are respectively provided on both sides of one end of the movable handle 45. Both gears 46 and fixed blocks 47 are rotatably connected to the movable handle 45. A slot 48 corresponding to the locking block 42 is provided in the middle of the fixed block 47. In the above structure, the toothed plate 34 and the gears 46 constitute a gear set 46 that transmits power to the motor 4. The motor 4, the gear set 46, and the angle encoder 32 serve as the electric drive mechanism for the secondary reflector 3. The clutch 43 is existing technology and is located between the movable handle 45 and the adjusting screw 5. By driving the movable handle 45 to move within the sliding groove 44, the locking block 42 and the slot 48 are separated or engaged, thereby realizing the separation / engagement of electric and manual drive power. Gear 46 and fixed block 47 are fixedly connected by a rotating shaft passing through movable handle 45, realizing synchronous rotation of motor shaft 41, fixed block 47 and gear 46. When the locking block 42 engages with the locking slot 48, motor 4 outputs power through gear 46 to adjust the angle of secondary reflector 3; when the locking block 42 disengages from the locking slot 48, the angle of secondary reflector 3 can be manually adjusted. The switching between manual and electric modes is as follows: In electric mode, controller 13 sends an angle command, motor 4 rotates gear 46 to drive transmission bracket 33 to rotate secondary reflector 3; in manual mode, clutch 43 moves movable handle 45 to move gear 46 away from transmission bracket 33, gear 46 disengages, cutting off power to motor 4, and manual adjustment is performed by adjusting screw 5. Motor 4 is a micro stepper motor 4, with the following parameters: model 42BYGH34, transmission ratio 1:3~1:5, step angle ≤1.8°. The motor 4 is fixed to the base 1 by an aluminum alloy bracket (not shown in the figure). The aluminum alloy bracket has a motor 4 mounting cavity (40mm×30mm×30mm) inside. The cavity wall has a wire hole for leading out the control wire of the motor 4. The motor 4 is fixed in the motor 4 mounting cavity by an M3 adjusting screw 5. The output shaft 41 (Φ5mm) extends out of the cavity.

[0021] like Figure 2As shown, the adjustment assembly also includes an adjustment screw 5. A support seat 12 is provided on the base 1, and a nut 51 is provided on the support seat 12. The adjustment screw 5 engages with the nut 51. The adjustment screw 5 is horizontally positioned, with one end abutting against the transmission bracket 33. The adjustment screw 5 is a manual adjustment component. The end of the adjustment screw 5 abuts against the transmission bracket 33. The axial movement of the adjustment screw 5 is achieved by manually turning it, thereby adjusting the angle of the secondary reflector 3. The threaded engagement between the adjustment screw 5 and the nut 51 provides an axial self-locking effect, maintaining the stability of the angle of the secondary reflector 3 before and after adjustment. Furthermore, the feed rate of the adjustment screw 5 is small and stable, facilitating the adjustment of the secondary reflector 3 to a suitable angle and maintaining stability. The nut 51 is an M8×1.25 specification, press-fitted into the circular hole of the support seat 12 on the left side of the base 1. The support seat 12 is 20mm high, and the axis of the adjustment screw 5 is perpendicular to the cylindrical shaft 31 of the secondary reflector 3.

[0022] like Figure 3 As shown, the secondary reflector 3 has cylindrical shafts 31 at both ends. The secondary reflector 3 is hinged to the rotating bracket 11 via the cylindrical shafts 31. An angle encoder 32 is connected to the cylindrical shaft 31 near the motor 4. A controller 13 is also provided on the base 1. The angle encoder 32 is electrically connected to the controller 13 and the motor 4. The angle encoder 32 is mounted on the cylindrical shaft 31 of the secondary reflector 3 and is fixed to the left end of the cylindrical shaft 31 of the secondary reflector 3 via a flange. The shaft of the angle encoder 32 is coaxial with the cylindrical shaft 31 of the secondary reflector 3, and the two are connected by a flexible coupling to provide real-time feedback of the angle data of the secondary reflector 3. The gear plate 34 of the transmission bracket 33 serves as the driven gear 46, and the gear 46 serves as the driving gear 46. The controller 13 sends an angle command, the motor 4 rotates the gear set 46, driving the transmission bracket 33 to rotate the secondary reflector 3. The angle encoder 32 provides angle feedback, and the controller 13 corrects the adjustment amount. The controller 13 sends an angle command, the motor 4 rotates, the gear set 46 rotates, the transmission bracket 33 rotates the secondary reflector 3, the angle encoder 32 provides angle feedback, and the controller 13 corrects the adjustment amount. Angle encoder 32 parameters: Model E6B2-CWZ6C, resolution 1024 lines, resolution ≥0.1°; Signal transmission: The angle encoder 32 data line is protected by a metal corrugated pipe and connected to the high-speed counting port of the controller 13.

[0023] like Figure 2 As shown, an extension plate 52 is fixedly connected to the other end of the adjusting screw 5. The extension plate 52 with a diameter of 30mm is welded to the end of the adjusting screw 5 as a manual turning end for the operator, which improves the convenience of rotating the adjusting screw 5.

[0024] like Figure 2 and Figure 4As shown, one end of the movable handle 45 has a T-shaped structure. The T-shaped end of the movable handle 45 is adapted to the slide groove 44 on the clutch 43, so that the movable handle 45 can move while being limited, thereby improving stability.

[0025] like Figure 2 As shown, the transmission bracket 33 is a Z-shaped sheet metal part, and a connecting hole 35 is provided on the transmission bracket 33. The lower left end of the secondary reflector 3 is locked to the connecting hole 35 on the upper end face of the transmission bracket 33 by an M3 countersunk screw. The transmission bracket 33 is a Z-shaped sheet metal part used to contact one end of the adjusting screw 5.

[0026] The switching logic between electric mode and manual mode is as follows: In electric mode, the controller 13 sends an angle command, the motor 4 drives the gear 46 group to drive the transmission bracket 33 to rotate the secondary reflector 3; in manual mode, the handle 45 is moved to move the gear 46 group away from the transmission bracket 33, the large and small teeth no longer mesh, the power of the motor 4 is cut off, and manual adjustment is performed by rotating the original adjustment screw 5.

[0027] Motor 4 is connected to transmission bracket 33 via gear set 46. Angle encoder 32 is coaxially set with the cylindrical shaft 31 of secondary reflector 3 and outputs angle signal. Angle encoder 32 and controller 13 form a closed-loop system. Controller 13 adjusts the operating parameters of motor 4 according to the feedback signal. Closed-loop feedback control improves angle adjustment accuracy, reduces system failure rate, and maintains low cost advantage.

[0028] Compared with traditional technologies, the use of the above two modes offers the following advantages: 1. Improved accuracy: Closed-loop control reduces the angle adjustment error from ±0.5° to ±0.1°, meeting the high-precision testing requirements of AR-HUD. 2. Enhanced reliability: In dual-mode adjustment, manual mode can be switched in case of failure, reducing the risk of test interruption by 90%. 3. Optimized efficiency: In electric mode, the adjustment time for a single group is reduced from 2 minutes in manual mode to 15 seconds, increasing batch testing efficiency by 8 times. 4. Controllable cost: The motor 4 drive device adopts a modular design and can be coaxially assembled with the adjusting screw 5 structure without modifying the main body of the test platform, ensuring strong compatibility and reducing the total cost by 40% compared to the pure electric solution.

[0029] This HUD test platform for a combined electric and manual adjustment mechanism utilizes a composite drive structure for the angle adjustment of the secondary reflector 3. Electric drive and manual adjustment are switched via a clutch 43, forming an adjustment system that is "electrically driven as the primary mode and manually driven as the secondary mode." This facilitates debugging and minimizes the risk of test interruption. The electric mode adjustment features closed-loop feedback control; the angle encoder 32 and controller 13 work together to achieve a closed-loop "command-execution-feedback" adjustment, resolving issues of position offset and adjustment accuracy. The electric drive device employs a modular design, offering strong compatibility and low cost.

[0030] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A power-operated and manual combined adjustment mechanism HUD test platform, comprising a base (1), a windshield (2), and a secondary reflector (3), wherein the secondary reflector (3) is located below the windshield (2), and a rotating bracket (11) is provided on the base (1), and the secondary reflector (3) is movably connected to the rotating bracket (11), characterized in that: The secondary reflector (3) is provided with a transmission bracket (33) at its bottom, a toothed plate (34) is provided on the transmission bracket (33), and an adjustment component is provided below the secondary reflector (3).

2. The HUD test platform with electric and manual combined adjustment mechanism according to claim 1, characterized in that: The adjustment assembly includes a motor (4), which is mounted on a base (1). The motor (4) includes an output shaft (41), and a locking block (42) is provided at the end of the output shaft (41). A clutch (43) is provided on the base (1), and a sliding groove (44) is provided at the top of the clutch (43). A moving handle (45) is slidably connected to the sliding groove (44). A gear (46) and a fixing block (47) are respectively provided on both sides of one end of the moving handle (45). The gear (46) and the fixing block (47) are rotatably connected to the moving handle (45). A locking groove (48) corresponding to the locking block (42) is provided in the middle of the fixing block (47).

3. The HUD test platform with electric and manual combined adjustment mechanism according to claim 2, characterized in that: The adjustment assembly also includes an adjustment screw (5), a support seat (12) is provided on the base (1), a nut (51) is provided on the support seat (12), the adjustment screw (5) cooperates with the nut (51), the adjustment screw (5) is horizontally set, and one end of the adjustment screw (5) abuts against the transmission bracket (33).

4. The HUD test platform with electric and manual combined adjustment mechanism according to claim 2 or 3, characterized in that: The secondary reflector (3) has cylindrical shafts (31) at both ends. The secondary reflector (3) is hinged to the rotating bracket (11) via the cylindrical shafts (31). An angle encoder (32) is connected to the cylindrical shaft (31) near the motor (4). A controller (13) is also provided on the base (1). The angle encoder (32) is electrically connected to the controller (13) and the motor (4).

5. The HUD test platform with electric and manual combined adjustment mechanism according to claim 3, characterized in that: An extension plate (52) is fixedly connected to the other end of the adjusting screw (5).

6. The HUD test platform with electric and manual combined adjustment mechanism according to claim 2, characterized in that: One end of the movable handle (45) has a T-shaped structure.

7. The HUD test platform with electric and manual combined adjustment mechanism according to claim 4, characterized in that: The transmission bracket (33) is a Z-shaped sheet metal part, and the transmission bracket (33) is provided with a connection hole (35).

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