Head-up display assembly, head-up display system and vehicle

Abstract

The utility model belongs to the technical field of head-up display, and particularly relates to a head-up display assembly, a head-up display system and a vehicle. The head-up display assembly comprises an image unit, a mounting seat and a pre-tightening structure, the image unit is connected with the mounting seat, and the pre-tightening structure is connected with the image unit and the mounting seat so as to form pre-tightening force on the image unit. The pre-tightening structure is connected with the image unit and the mounting seat, and when the image unit shakes, the pre-tightening force of the pre-tightening structure on the image unit can resist the vibration force generated by the vibration of the image unit, so that the shaking of the image unit is limited, and the effect of supporting the image unit is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of head-up display, and particularly relates to a head-up display component, a head-up display system and a vehicle. Background Art

[0002] A HUD (Head-up-Display) includes an image unit, which is used to project information such as the current speed and navigation of a vehicle onto a windshield to form an image in front of the glass, so that a driver can see navigation and vehicle speed information without turning or lowering his head.

[0003] However, in the existing head-up display, during the driving of a vehicle, the image unit is prone to shake, resulting in imaging jitter. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a head-up display component, a head-up display and a vehicle for the problem that in the existing head-up display, the image unit is prone to shake, resulting in imaging jitter.

[0005] To solve the above technical problem, on the one hand, an embodiment of the utility model provides a head-up display component, including an image unit, a mounting seat and a pre-tightening structure. The image unit is connected to the mounting seat, and the pre-tightening structure is connected to the image unit and the mounting seat to form a pre-tightening force on the image unit.

[0006] Optionally, the pre-tightening structure is an elastic member, and the pre-tightening structure is located on a side of the mounting seat facing away from the image unit.

[0007] Optionally, the pre-tightening structure is a damping spring piece, and the damping spring piece includes a supporting part and a pre-tightening part. The supporting part is connected to the pre-tightening part; the supporting part is connected to the mounting seat, and at least part of the pre-tightening part is spaced from the mounting seat in a first direction.

[0008] Optionally, the supporting part has a wave part bent in a direction away from the image unit, and the bottom of the wave part is connected to the mounting seat.

[0009] Optionally, a connecting part protruding toward the damping spring piece is arranged on the back surface of the image unit;

[0010] The head-up display component further includes a fastener, and the fastener connects the pre-tightening part and the connecting part to enable the damping spring piece to form a pre-tightening force on the image unit.

[0011] Optionally, the image unit is rotatably mounted on the mounting seat around a first rotation axis; an arc surface is arranged on a side of the mounting seat facing away from the image unit, and the pre-tightening structure is connected to the arc surface.

[0012] Optionally, a guiding groove is provided on a side of the mounting base facing away from the image unit, the pre-tightening structure is mounted in the guiding groove, and the guiding groove is used for guiding the pre-tightening structure when the image unit rotates.

[0013] Optionally, a plurality of pre-tightening structures are provided, and the plurality of pre-tightening structures are axially spaced apart along the first rotation axis.

[0014] Optionally, the head-up display assembly further includes a motor and a transmission mechanism. The transmission mechanism includes a lead screw and a lead screw nut seat. The lead screw and the lead screw nut seat are in transmission connection. The motor is mounted on a lead screw bracket, and the lead screw bracket is fixedly connected to the mounting base;

[0015] The motor is in transmission connection with the lead screw, the lead screw nut seat is connected to the image unit, the motor can drive the lead screw to rotate, so as to drive the lead screw nut seat to move, and further the lead screw nut seat drives the image unit to rotate.

[0016] Optionally, a guide rail groove is provided on the lead screw bracket, the lead screw nut seat is slidably mounted in the guide rail groove, and the guide rail groove is used for guiding the lead screw nut seat to move in a second direction when the motor rotates; wherein, the second direction is perpendicular to the direction of the first rotation axis.

[0017] Optionally, the image unit is provided with a protruding driving portion, the driving portion is eccentrically arranged on the image unit, and the driving portion is connected to the lead screw nut seat.

[0018] Optionally, the guide rail groove is a through hole penetrating along the direction of the first rotation axis, a part of the lead screw nut seat extends out of the guide rail groove and is connected to the driving portion, or at least a part of the driving portion extends into the guide rail groove and is connected to the lead screw nut seat.

[0019] On the other hand, an embodiment of the present invention provides a head-up display system, including the above-mentioned head-up display assembly.

[0020] On the other hand, an embodiment of the present invention provides a vehicle, including the above-mentioned head-up display system.

[0021] In the head-up display assembly of the present invention, the pre-tightening structure is connected to the image unit and the mounting base. When the image unit shakes, the pre-tightening force of the pre-tightening structure can resist the vibration force generated by the vibration of the image unit, so as to limit the shaking of the image unit and play a role in supporting the image unit. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of a head-up display assembly provided by an embodiment of the present invention;

[0023] Figure 2 is Figure 1 a schematic view of the back side of

[0024] Figure 3 is Figure 2 an exploded view of

[0025] Figure 4 is Figure 2 a longitudinal sectional view when the mirror surface in

[0026] Figure 5 is Figure 4 a longitudinal sectional view after the mirror surface in

[0027] Figure 6 is Figure 5 a force analysis diagram when the image unit vibrates;

[0028] Figure 7 is Figure 1 a side view of

[0029] The reference numerals in the specification are as follows:

[0030] 1. Transmission mechanism; 11. Motor; 12. Lead screw support; 121. Guide rail groove; 13. Lead screw nut seat; 131. Trigger part; 14. Limit switch; 15. Lead screw; 2. Mounting seat; 21. Guide groove; 22. Avoidance hole; 23. Arc surface; 3. Image unit; 31. Connecting part; 32. Rear mirror housing; 33. Mirror surface housing; 34. Driving part; 4. Damping spring piece; 41. Supporting part; 42. Pre-tightening part; 5. Connecting spring piece; 6. Fastener. Detailed implementation manners

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0032] As Figures 1 to 3 shown, an embodiment of the present utility model provides a head-up display assembly, including an image unit 3, a mounting seat 2 and a pre-tightening structure. The pre-tightening structure is connected to the image unit 3 and the mounting seat 2 to form a pre-tightening force on the image unit 3.

[0033] Specifically, when the vehicle passes through a rough road condition and the image unit 3 shakes, the pre-tightening force of the pre-tightening structure on the image unit 3 can resist the vibration force generated by the vibration of the image unit 3 and play a role in supporting the image unit 3.

[0034] It should be noted that the image unit 3 can be a reflection device or a display device.

[0035] In the head-up display assembly of the present utility model, the pre-tightening structure is connected to the image unit 3 and the mounting base 2. When the image unit 3 shakes, the pre-tightening force of the pre-tightening structure can resist the vibration force generated by the vibration of the image unit 3 to limit the shaking of the image unit 3 and play a role in supporting the image unit 3.

[0036] In one embodiment, the pre-tightening structure is an elastic member, and the pre-tightening structure is located on the side of the mounting base 2 facing away from the image unit 3. The elastic member is elastically connected to the image unit 3 and the mounting base 2, so that the pre-tightening force provided by the pre-tightening structure to the image unit 3 is an elastic force, and the vibration damping and buffering effect is better.

[0037] In one embodiment, the pre-tightening structure is a damping spring piece 4. The damping spring piece 4 includes a supporting portion 41 and a pre-tightening portion 42, and the supporting portion 41 is connected to the pre-tightening portion 42; the supporting portion 41 is connected to the mounting base 2, and at least part of the pre-tightening portion 42 is spaced from the mounting base 2 in the first direction. Among them, the image unit 3, the mounting base 2 and the damping spring piece 4 are arranged in sequence in the first direction, and the first direction refers to Figure 3 the Z direction shown in

[0038] Since the supporting portion 41 is connected to the mounting base 2 and at least part of the pre-tightening portion 42 is spaced from the mounting base 2 in the first direction, when the image unit 3 shakes and drives the pre-tightening portion 42 to move, the pre-tightening portion 42 is compressed and deformed, and the reaction elastic force generated by the pre-tightening portion 42 is the pre-tightening force to resist the shaking of the image unit 3.

[0039] In one embodiment, the pre-tightening portion 42 is formed by bending the middle part of the supporting portion 41 away from the image unit 3.

[0040] In one embodiment, the supporting portion 41 has a wave portion formed by bending away from the image unit 3, and the wave bottom of the wave portion is connected to the mounting base 2.

[0041] The wave-shaped wave portion can increase the force arm of the pre-tightening portion 42, improve the elastic performance of the damping spring piece 4, and further increase the pre-tightening force of the damping spring piece 4 on the image unit 3, so as to better straighten the image unit 3.

[0042] In one embodiment, the image unit 3 is provided with a connecting portion 31 protruding toward the damping spring piece 4.

[0043] The head-up display assembly further includes a fastener 6, and the fastener 6 connects the pre-tightening portion 42 and the connecting portion 31 to form a pre-tightening force of the damping spring piece 4 on the image unit 3.

[0044] The connection length between the fastener 6 and the connecting portion 31 affects the magnitude of the pre-tightening force formed by the damping elastic sheet 4 on the image unit 3. Therefore, during installation, the magnitude of the pre-tightening force formed by the damping elastic sheet 4 on the image unit 3 can be adjusted by adjusting the connection length between the fastener 6 and the connecting portion 31, so as to improve the applicability of the head-up display assembly.

[0045] In one embodiment, as Figure 3 and Figure 4 shown, the fastener 6 is a threaded fastener. A through hole is provided on the pre-tightening portion 42, and a first threaded hole is provided on the connecting portion 31. A part of the fastener 6 passes through the through hole and is threadedly connected in the first threaded hole, and another part of the fastener 6 presses the pre-tightening portion 42 against the connecting portion 31.

[0046] In one embodiment, the threaded fastener is a bolt. The rod portion of the bolt passes through the through hole and is threadedly connected in the first threaded hole, and the head of the bolt presses the pre-tightening portion 42 against the connecting portion 31.

[0047] A single-piece bolt can achieve the pre-tightening connection between the pre-tightening portion 42 and the connecting portion 31. The number of parts is small, which is convenient for installation.

[0048] In one embodiment, the image unit 3 is rotatably mounted on the mounting base 2 around a first rotation axis. The side of the mounting base 2 facing away from the image unit 3 has an arc surface 23, and the arc surface 23 extends along the rotation direction of the mounting base 2. The center of the arc surface 23 is located on the side facing the image unit 3, and the pre-tightening structure can be connected between the image unit 3 and the arc surface 23.

[0049] Specifically, when the vehicle passes through rough road conditions, the image unit 3 will undergo mirror surface vibration and shaft vibration. When the image unit 3 undergoes mirror surface vibration, the pre-tightening force of the above pre-tightening structure on the image unit 3 can resist the vibration force generated by the mirror surface vibration of the image unit 3 and play a role in supporting the image unit 3. When the image unit 3 undergoes shaft vibration, the sliding friction force between the pre-tightening structure and the arc surface 23 of the mounting base 2 will cancel out the vibration force of the image unit 3 in the shaft rotation direction.

[0050] Figure 6 The X marked in the figure represents the mirror surface vibration direction, R represents the shaft vibration direction, F1 represents the force exerted by the pre-tightening structure on the image unit 3, and F2 represents the sliding friction force between the pre-tightening structure and the mounting base 2.

[0051] Figure 4 The image unit 3 shown is in a vertical state, Figure 5 The image unit 3 shown is in a state of rotating a certain angle.

[0052] As Figure 4 and Figure 5As shown, when the image unit 3 rotates around the first rotation axis, the pre-tightening structure connected to the image unit 3 rotates together with the image unit 3. The arrangement of the arc surface 23 on the image unit 3 enables the pre-tightening structure to closely adhere to the mounting seat 2 when rotating to any angle along with the image unit 3, so as to effectively connect the pre-tightening structure with the mounting seat 2, which is beneficial to ensuring that the sliding friction force between the mounting seat 2 and the pre-tightening structure cancels out the vibration force generated when the image unit 3 vibrates around the axis.

[0053] In one embodiment, as Figure 3 and Figure 4 shown, the corrugated part of the support part 41 extends along the first rotation axis direction.

[0054] In one embodiment, the support part 41 has two corrugated parts, and the two corrugated parts are arranged at intervals on both sides of the pre-tightening part 42 along the rotation direction of the image unit 3.

[0055] In one embodiment, as Figure 3 shown, a guide groove 21 is provided on the side of the mounting seat 2 facing away from the image unit 3, and the pre-tightening structure is installed in the guide groove 21. The guide groove 21 is used to guide the pre-tightening structure when the image unit 3 rotates.

[0056] In one embodiment, there are two raised ribs on the side of the mounting seat 2 facing away from the image unit 3. The ribs extend along the height direction of the image unit 3, and the interval between the two ribs forms the above-mentioned guide groove 21. Among them, the height direction of the image unit 3 is Figure 3 the Y direction shown in

[0057] In one embodiment, in the height direction of the image unit 3, the connecting part 31 is located at the middle position of the image unit 3.

[0058] During the mirror vibration, the pre-tightening force exerted by the pre-tightening structure on the image unit 3 acts on the middle position in the height direction of the image unit 3, so that the image unit 3 is in force balance in the height direction, avoiding the image unit 3 rotating around the rotation axis due to unbalanced force.

[0059] In one embodiment, multiple pre-tightening structures are provided, and the multiple pre-tightening structures are axially spaced along the first rotation axis to increase the number of support positions for elastically supporting the image unit 3, so that elastic vibration damping can be performed at various positions of the image unit 3.

[0060] In one embodiment, two pre-tightening structures are provided, and the two pre-tightening structures are located on the opposite sides of the image unit 3 along the first rotation axis direction.

[0061] In one embodiment, as Figure 3 and Figure 7As shown, the head-up display assembly further includes a motor 11 and a transmission mechanism 1. The transmission mechanism 1 includes a lead screw 15 and a lead screw nut seat 13. The lead screw 15 and the lead screw nut seat 13 are in transmission connection. The motor 11 is installed on a lead screw support 12, and the lead screw support 12 is fixedly connected to a mounting seat 2.

[0062] The motor 11 is in transmission connection with the lead screw 15. The lead screw nut seat 13 is connected to the image unit 3. The motor 11 can drive the lead screw 15 to rotate, so as to drive the lead screw nut seat 13 to move, and further the lead screw nut seat 13 drives the image unit 3 to rotate.

[0063] Specifically, when the motor 11 rotates, the lead screw 15 rotates, and the lead screw nut seat 13 that is in threaded cooperation with the lead screw 15 moves along the lead screw 15. The lead screw nut seat 13 drives the image unit 3 to rotate around a first rotation axis, so as to adjust the tilt angle of the image unit 3, thereby adjusting the imaging height of the head-up display on the windshield.

[0064] Compared with the situation where the use of gear transmission causes the image unit 3 to wobble around the axis due to large tooth clearances, imaging jitter, vibration abnormal noise under harsh road conditions, and the gear transmission structure cannot be self-locked, resulting in the motor needing to remain powered on to maintain torque to avoid the displacement of the mirror. In the transmission mechanism 1 of the present utility model, a lead screw transmission structure is adopted. The screw clearance between the lead screw 15 and the lead screw nut seat 13 is smaller, the transmission accuracy is higher, the transmission efficiency between the lead screw 15 and the lead screw nut seat 13 is higher, the angle of the image unit 3 can be more precisely controlled, and at the same time, the abnormal noise of vibration and imaging displacement wobbling of the image unit 3 caused by transmission vibration can be avoided, improving the reliability of the head-up display assembly.

[0065] Since there is a self-locking property between the lead screw 15 and the lead screw nut seat 13, therefore, after the transmission mechanism 1 drives the image unit 3 to rotate to an angle, the lead screw nut seat 13 locked with the lead screw 15 can keep the position of the image unit 3 unchanged and limit vibration, eliminating the need for an additional self-locking structure, making the volume of the head-up display assembly smaller and occupying less space.

[0066] In an embodiment, a guide rail groove 121 is provided on the lead screw support 12. The guide rail groove 121 extends along a second direction. The lead screw nut seat 13 is slidably installed in the guide rail groove 121. The guide rail groove 121 is used to guide the lead screw nut seat 13 to move along the second direction when the motor 11 rotates, and further the lead screw nut seat 13 drives the image unit 3 to rotate; wherein, the second direction is perpendicular to the direction of the first rotation axis, and the guide rail groove 121 constitutes a guiding structure. Figure 7 The straight arrow shown in indicates the second direction, and the rotating arrow indicates the rotation direction of the motor 11.

[0067] Specifically, when the motor 11 rotates, the lead screw 15 rotates, and the lead screw nut seat 13 that is in threaded engagement with the lead screw 15 linearly moves in the second direction under the guiding action of the guiding structure. Furthermore, the lead screw nut seat 13 pushes and pulls the image unit 3 to rotate.

[0068] The lead screw nut seat 13 that linearly moves in the second direction drives the image unit 3 to rotate. The movement trajectory is simple, which is beneficial to ensuring the stability of the lead screw nut seat 13 at various positions, and further beneficial to ensuring the stability of the image unit 3 at various angles.

[0069] In other embodiments, the guiding structure may include two guiding rods. Two guiding holes that are spaced apart along the first rotation axis direction are provided on the lead screw nut seat 13. The guiding holes extend in the second direction, and the guiding rods are inserted into the guiding holes.

[0070] In one embodiment, the housing of the motor 11 is fixed to the lead screw support 12 by screws.

[0071] In one embodiment, the lead screw support 12 is fixed to the mounting seat 2 by screws.

[0072] In one embodiment, as Figure 3 shown, the image unit 3 is provided with a protruding driving portion 34. The driving portion 34 is eccentrically arranged on the image unit 3, and the driving portion 34 is connected to the lead screw nut seat 13.

[0073] The so-called "eccentric arrangement" means that the driving portion 34 is arranged deviating from the rotation center line (i.e., the first rotation axis) of the image unit 3, so that the moving lead screw nut seat 13 can drive the image unit 3 to rotate around the first rotation axis through the driving portion 34.

[0074] One side of the image unit 3 is connected to the lead screw nut seat 13 through the protruding driving portion 34. The structure of the driving portion 34 is simple to reduce the space occupied by the head-up display component, and further reduce the requirements for the installation space position of the head-up display component, which is beneficial to installation in the instrument panel space.

[0075] In one embodiment, the driving portion 34 is a driving platform. The driving platform protrudes and is arranged below one side of the image unit 3 along the first rotation axis direction. A driving port is provided on one side of the lead screw nut seat 13 close to the driving portion 34. The driving port has an opening facing the driving portion 34 side. The driving platform is inserted into the driving port along the first rotation axis direction. When the lead screw nut seat 13 linearly moves in the second direction, the lead screw nut seat 13 pushes and pulls the driving platform to drive the image unit 3 to rotate around the axis.

[0076] In other embodiments, the image unit 3 may be hinged to the lead screw nut seat 13 through a ball hinge seat.

[0077] In one embodiment, at least one pre-tightening structure is connected to the other side of the image unit 3 along the direction of the first rotation axis. The pre-tightening structure and the lead screw nut seat 13 respectively support both sides of the image unit 3 along the direction of the first rotation axis, making the overall force on the image unit 3 more balanced and facilitating the improvement of the effect of reducing mirror vibration.

[0078] In one embodiment, the guide rail groove 121 is a through hole penetrating along the direction of the first rotation axis. Part of the lead screw nut seat 13 extends out of the guide rail groove 121 to be connected to the driving part 34, or at least part of the driving part 34 extends into the guide rail groove 121 to be connected to the lead screw nut seat 13.

[0079] In one embodiment, as Figure 3 and Figure 7 shown, the head-up display assembly further includes a limit switch 14. The limit switch 14 is installed on the lead screw bracket 12. A trigger part 131 is provided on one side of the lead screw nut seat 13 extending out of the guide rail groove 121. The trigger part 131 is used to trigger the limit switch 14 when the lead screw nut seat 13 moves to the end of the guide rail groove 121, so that the limit switch 14 controls the motor 11 to cut off the power.

[0080] In one embodiment, the limit switch 14 is fixed to the lead screw bracket 12 by screws.

[0081] In one embodiment, the mounting base 2 is in a long strip shape extending along the direction of the first rotation axis. An installation groove extending along the direction of the first rotation axis is provided on the mounting base 2. The image unit 3 is rotatably installed in the installation groove, and the back surface of the image unit 3 is attached to the bottom wall of the installation groove.

[0082] The long strip-shaped mounting base 2 has relatively high structural strength and relatively high support stability for the image unit 3. Moreover, when multiple pre-tightening structures are provided, the long strip-shaped mounting base 2 has enough space to install multiple pre-tightening structures, so that multiple pre-tightening structures can be installed on the same mounting base 2, reducing the number of mounting bases 2.

[0083] At this time, an avoidance hole 22 is provided on the mounting base 2. The avoidance hole 22 penetrates the bottom wall of the installation groove. The connecting part 31 extends through the avoidance hole 22 towards the damping elastic sheet 4 to be connected to the pre-tightening part 42 through the fastener 6.

[0084] When the image unit 3 is rotatably installed on the mounting base 2 around the first rotation axis, the avoidance hole 22 is a long strip hole extending along the rotation direction of the image unit 3, so that the connecting part 31 can rotate in the avoidance hole 22.

[0085] In one embodiment, the image unit 3 is the lens of a reflector, and the mounting base 2 is the mirror base of the reflector.

[0086] The lens may include a rear lens housing 32 and a front lens housing 33. The rear lens housing 32 has an inner cavity with an opening facing away from the mounting base 2. The front lens housing 33 is installed in the inner cavity. The rear lens housing 32 is installed on the mounting base 2, and the connecting portion 31 is provided on the back surface of the rear lens housing 32.

[0087] Of course, the display unit 3 may also be a display device.

[0088] In one embodiment, a connecting elastic piece 5 is further included. On both sides of the rear lens housing 32 along the first rotation axis direction, protruding rotating shafts are provided. On the side walls of both sides of the mounting base 2 along the first rotation axis direction, rotating shaft holes are provided. The rotating shaft hole of the mounting base 2 away from the transmission mechanism 1 has an opening facing the image unit 3. The rotating shaft on one side of the rear lens housing 32 is inserted into the corresponding rotating shaft hole through this opening, and the rotating shaft on the other side is inserted into another rotating shaft hole, so as to rotatably mount the rear lens housing 32 on the mounting base 2 around the first rotation axis.

[0089] The connecting elastic piece 5 includes a first flat section, a second flat section and a third flat section. Both the first flat section and the third flat section extend along the second direction. The second flat section extends along the height direction of the image unit 3 and connects one end of the first flat section away from the mounting base 2 and one end of the third flat section away from the mounting base 2 to form a limiting groove. At one end of the third flat section close to the mounting base 2, a clamping groove with an opening facing the mounting base 2 is provided. The clamping groove is stuck on the rotating shaft on one side of the rear lens housing 32, and the corresponding side wall of the mounting base 2 is inserted into the limiting groove, and the first flat section and the third flat section clamp the corresponding side wall of the mounting base 2.

[0090] In one embodiment, the appearance of the image unit 3 is square, and the mirror surface of the image unit 3 is a curved surface. Correspondingly, the mounting groove on the mounting base 2 is a square groove.

[0091] In other embodiments, the pre-tightening structure may be a spring, a disc spring or a gasket, etc.

[0092] In other embodiments, the damping elastic piece 4 may be snap-connected to the image unit 3, and the pre-tightening portion 42 is snap-connected to the connecting portion 31, so that the supporting portion 41 presses on the mounting base 2.

[0093] In other embodiments, the fastener 6 may be a rivet, and the rivet rivets the pre-tightening portion 42 and the connecting portion 31.

[0094] In other embodiments, the fastener 6 may include a screw and a nut. One end of the screw is threadedly connected to the connecting portion 31, and the other end of the screw is fastened by the nut to press the pre-tightening portion 42 on the end surface of the connecting portion 31.

[0095] In other embodiments, the supporting portion 41 may include an arc portion and a flat portion arranged around the arc portion. The flat portion presses tightly on the mounting base 2, and the middle of the arc portion bends away from the image unit 3 to form the pre-tightening portion 42.

[0096] In other embodiments, only one pre-tightening structure may be provided, and one pre-tightening structure may be provided at the center position of the image unit 3. Of course, three or more pre-tightening structures may also be provided.

[0097] In other embodiments, the transmission mechanism 1 may include a driving gear and a driven gear. The output shaft of the motor is connected to the driving gear, and the driving gear and the driven gear are engaged for transmission. The rotating shaft of the driven gear is connected to the rotating shaft of the image unit 3. When the motor operates, it drives the driving gear to rotate, and then drives the image unit 3 to rotate through the driven gear.

[0098] In other embodiments, the driving part 34 may be provided on one side in the height direction of the image unit 3, so that the transmission mechanism 1 is provided on the side in the height direction of the image unit 3. Of course, the transmission mechanism 1 may also be provided on the back of the image unit 3.

[0099] In addition, an embodiment of the present invention provides a head-up display system, including the head-up display assembly of the above embodiment.

[0100] In addition, an embodiment of the present invention provides a vehicle, including the head-up display system of the above embodiment.

[0101] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A head-up display assembly, characterized in that: It comprises an image unit (3), a mounting seat (2) and a pre-tightening structure, wherein the image unit (3) is connected to the mounting seat (2), and the pre-tightening structure is connected to the image unit (3) and the mounting seat (2) to form a pre-tightening force on the image unit (3).

2. The head-up display assembly according to claim 1, characterized in that: The pre-tightening structure is an elastic member, and the pre-tightening structure is located on a side of the mounting seat (2) facing away from the image unit (3).

3. The head-up display assembly according to claim 2, characterized in that: The pre-tightening structure is a damping spring sheet (4), and the damping spring sheet (4) comprises a supporting portion (41) and a pre-tightening portion (42), wherein the supporting portion (41) is connected to the pre-tightening portion (42); the supporting portion (41) is connected to the mounting seat (2), and at least a portion of the pre-tightening portion (42) and the mounting seat (2) are spaced apart along a first direction.

4. The head-up display assembly according to claim 3, characterized in that: The support portion (41) has a wave portion that is bent in a direction away from the image unit (3), and the bottom of the wave portion is connected to the mounting seat (2).

5. The head-up display assembly according to claim 3, characterized in that: The image unit (3) is provided with a connecting portion (31) protruding toward one side of the damping spring sheet (4); The head-up display assembly further comprises a fastener (6), wherein the fastener (6) connects the pre-tightening portion (42) and the connecting portion (31), so that the damping spring sheet (4) forms a pre-tightening force on the image unit (3).

6. The head-up display assembly according to any one of claims 1 to 5, characterized in that: The image unit (3) is rotatably mounted on the mounting seat (2) around a first rotation axis; the mounting seat (2) has a curved surface (23) on a side facing away from the image unit (3), and the pre-tightening structure is connected to the curved surface (23).

7. The head-up display assembly according to claim 6, characterized in that: A guide groove (21) is provided on a side of the mounting seat (2) facing away from the image unit (3), the pre-tightening structure is mounted in the guide groove (21), and the guide groove (21) is used to guide the pre-tightening structure when the image unit (3) rotates.

8. The head-up display assembly according to claim 6, characterized in that: A plurality of the pre-tightening structures are provided, and the plurality of the pre-tightening structures are axially spaced and distributed along the first rotation axis.

9. The head-up display assembly according to claim 6, characterized in that: The head-up display assembly further comprises a motor (11) and a transmission mechanism (1), wherein the transmission mechanism (1) comprises a screw rod (15) and a screw nut seat (13), wherein the screw rod (15) and the screw nut seat (13) are in transmission connection, wherein the motor (11) is mounted on a screw support (12), and the screw support (12) is fixedly connected to the mounting seat (2); The motor (11) is transmission-connected to the lead screw (15), and the lead screw nut seat (13) is connected to the image unit (3). The motor (11) can drive the lead screw (15) to rotate, thereby driving the lead screw nut seat (13) to move, and then the lead screw nut seat (13) drives the image unit (3) to rotate.

10. The head-up display assembly according to claim 9, characterized in that: A guide rail groove (121) is provided on the screw support (12), and the screw nut seat (13) is slidably installed in the guide rail groove (121). The guide rail groove (121) is used to guide the screw nut seat (13) to move along a second direction when the motor (11) rotates; wherein the second direction is perpendicular to the direction of the first rotation axis.

11. The head-up display assembly according to claim 10, characterized in that: The image unit (3) is provided with a protruding driving portion (34), and the driving portion (34) is eccentrically arranged on the image unit (3); the driving portion (34) is connected to the screw nut seat (13).

12. The head-up display assembly according to claim 11, characterized in that: The guide rail groove (121) is a through hole that penetrates along the direction of the first rotation axis, and part of the screw nut seat (13) extends out of the guide rail groove (121) to be connected to the drive part (34), or at least part of the drive part (34) extends into the guide rail groove (121) to be connected to the screw nut seat (13).

13. A head-up display system, characterized in that: A head-up display assembly comprising any one of claims 1 to 12.

14. A vehicle, characterized in that: Includes the head-up display system as claimed in claim 13.

Images