Driving module and HUD reflector
By installing a limiting sleeve on the worm of the HUD device and using an elastic pressing part to prevent axial squirting, the structural wear and motor abnormal noise caused by worm squirting in the prior art is solved, and higher adjustment accuracy and reliability are achieved.
Patent Information
- Application Number
- CN202420952430.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-05-06
AI Technical Summary
In existing HUD equipment, the worm rods cause squirming and vibration in the axial direction, resulting in structural wear, abnormal motor noise, high failure rate and short service life.
By installing a limiting shaft sleeve at one end of the worm, and using the elastic pressing part to form an elastic thrust that pushes the worm close to the motor side, the abutment surface of the worm is closely in contact with the support surface, and preventing axial twitching.
Effectively prevent the worm from squirting in the axial direction, eliminate the assembly gap in the axial direction of the worm, and improve the adjustment accuracy and reliability of the HUD mirror.
Smart Images
Figure CN222689967U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of HUD equipment, and in particular to a driving module and a HUD reflector. Background Art
[0002] At present, vehicles are usually equipped with HUD devices, which use motors to drive worms to drive the HUD reflectors. Specifically, the worm drives the helical gears to drive the HUD reflectors to adjust the angle. Due to the existence of assembly gaps, not only is the adjustment accuracy of the HUD reflectors low, but also during the movement of the vehicle, the reflectors will shake under the influence of gravity, causing the worms to move and vibrate in the axial direction, which can easily cause structural wear or abnormal noise in the motor, resulting in a high failure rate and a short service life of the HUD equipment. Utility Model Content
[0003] The purpose of the present application is to provide a driving module and a HUD reflector, which can avoid the movement of the worm, eliminate the axial assembly clearance of the worm, and improve the adjustment accuracy and use reliability of the HUD reflector.
[0004] The embodiment of the present application is implemented as follows:
[0005] In the first aspect, an embodiment of the present application discloses a driving module, including a mounting bracket, a motor and a worm; the worm is rotatably arranged on the mounting bracket, one end of the worm is provided with a mounting shaft, and the other end is connected to the motor; a limiting sleeve is sleeved on the mounting shaft, and the mounting bracket has a clamping hole, and the mounting shaft is clamped with the clamping hole through the limiting sleeve, and the end of the limiting sleeve facing away from the motor is provided with an elastic pressing portion abutting against the end face of the mounting shaft, the end of the worm close to the motor has an abutting surface, and the mounting bracket has a supporting surface at a position corresponding to the abutting surface, and the elastic pressing portion can form an elastic thrust to push the worm toward one side of the motor, so that the abutting surface abuts against the supporting surface.
[0006] As an optional embodiment, a clamping protrusion is provided on the inner wall of the clamping hole; the limiting sleeve has a first limiting portion at one end close to the motor and a second limiting portion at the end away from the motor, the limiting sleeve is inserted into the clamping hole and driven to rotate at a preset angle, and the first limiting portion and the second limiting portion are respectively located on both sides of the clamping protrusion.
[0007] As an optional embodiment, the mounting bracket has a limiting hole, the limiting sleeve is provided with an extension arm extending radially, and the extension arm is provided with a locking protrusion on the side close to the motor; after the limiting sleeve is rotated by a preset angle, the locking protrusion is inserted into the limiting hole.
[0008] As an optional implementation, the elastic pressing portion is a U-shaped elastic structure, one end of the U-shaped elastic structure is connected to the extension arm, and the other end abuts against the end surface of the mounting shaft away from the motor.
[0009] In the second aspect, an embodiment of the present application also discloses a HUD reflector, comprising a shell, a reflector and the above-mentioned drive module; the reflector is provided with a reflector shaft rotatably connected to the shell, and a gear is provided at the end of the reflector shaft; the worm of the drive module is meshed with the gear, and the motor can drive the gear to rotate through the worm, so that the reflector rotates around the reflector shaft.
[0010] As an optional embodiment, a reflector mounting hole is provided on the mounting bracket of the driving module, and one end of the reflector shaft is passed through the reflector mounting hole; the mounting bracket is provided with a radial elastic abutment portion in the circumferential direction of the reflector mounting hole, and the radial elastic abutment portion abuts against the side wall of the reflector shaft.
[0011] As an optional embodiment, a torsion spring is sleeved on the reflector shaft, one end of the torsion spring is connected to the reflector or the gear, and the other end is connected to the housing or the mounting bracket; the torsion spring can generate a force to push the gear and the worm to engage tightly.
[0012] As an optional embodiment, a slot is provided on the shell, one end of the reflector shaft is inserted into the slot, a buckle is provided on the slot, and the buckle has an elastic limiting portion abutting against the circumferential side wall of the reflector shaft, and the elastic limiting portion can generate a force to push the reflector shaft to abut against the slot.
[0013] As an optional implementation, the elastic limiting portion is an arc-shaped structural member, and the arc-shaped structural member is in contact with the axial side wall of the reflector shaft.
[0014] As an optional implementation, it further includes a tension spring, one end of which is connected to the reflector, and the other end of which is connected to the housing.
[0015] The beneficial effects of the embodiments of the present application include:
[0016] The embodiment of the present application discloses a driving module, including a mounting bracket, a motor and a worm; the worm is rotatably arranged on the mounting bracket, one end of the worm in the embodiment of the present application is provided with a mounting shaft, and the other end is connected to the motor; a limiting sleeve is sleeved on the mounting shaft, and a clamping hole is provided on the mounting bracket. The mounting shaft in the embodiment of the present application is clamped with the clamping hole through the limiting sleeve, and an elastic pressing part is provided at the end of the limiting sleeve away from the motor to abut against the end face of the mounting shaft, and the worm has an abutting surface at one end close to the motor, and the mounting bracket has a supporting surface at a position corresponding to the abutting surface, and the elastic pressing part in the embodiment of the present application can form an elastic thrust to push the worm to one side of the motor, so that the abutting surface abuts against the supporting surface. Compared with the prior art, the embodiment of the present application implements elastic abutment on the mounting shaft at one end of the worm, so that the abutting surface of the worm is in close contact with the supporting surface, effectively preventing the worm from moving in the axial direction, which can not only greatly reduce the processing accuracy of the part structure, but also effectively eliminate the assembly gap in the axial direction of the worm, and improve the adjustment accuracy and use reliability of the HUD reflector.
[0017] The embodiment of the present application also discloses a HUD reflector, including a housing, a reflector and the above-mentioned drive module; the embodiment of the present application adopts the above-mentioned drive module to achieve angle adjustment of the reflector. The reflector of the embodiment of the present application is provided with a reflector shaft rotatably connected to the housing, and a gear is provided at the end of the reflector shaft; the worm of the drive module is meshed with the gear, and the motor can drive the gear to rotate through the worm, so that the reflector rotates around the reflector shaft. Compared with the prior art, the HUD reflector provided by the embodiment of the present application has a worm supported by an elastic pressing portion, so that the worm does not move or vibrate in the axial direction, avoids reverse dragging of the motor, thereby avoiding structural wear and abnormal noise of the motor, and can greatly improve the structural reliability of the HUD reflector. In addition, the embodiment of the present application can make the worm and the gear tightly meshed, so that the HUD reflector has a higher adjustment accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is one of the structural schematic diagrams of the driving module of an embodiment of the present application;
[0020] Figure 2 This is the second structural diagram of the driving module of the embodiment of the present application;
[0021] Figure 3 This is the third structural diagram of the driving module of the embodiment of the present application;
[0022] Figure 4 This is the fourth structural diagram of the driving module of the embodiment of the present application;
[0023] Figure 5 This is one of the structural schematic diagrams of the HUD reflector in the embodiment of the present application;
[0024] Figure 6 This is the second structural schematic diagram of the HUD reflector in the embodiment of the present application;
[0025] Figure 7 This is the third structural schematic diagram of the HUD reflector in the embodiment of the present application;
[0026] Figure 8 This is the fourth structural schematic diagram of the HUD reflector in the embodiment of the present application.
[0027] icon:
[0028] 100-driving module; 101-mounting bracket; 102-motor; 103-worm; 104-mounting shaft; 105-limiting sleeve; 106-clamping hole; 107-elastic pressing part; 108-butt surface; 109-support surface; 110-clamping protrusion; 111-first limiting part; 112-second limiting part; 113-extension arm; 114-locking protrusion; 115-housing; 116-reflector shaft; 117-gear; 118-reflector mounting hole; 119-radial elastic butt portion; 120-torsion spring; 121-slot; 122-buckle; 123-elastic limiting part; 124-tension spring. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0032] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0033] At present, vehicles are usually equipped with HUD devices, which use motor 102 to drive worm 103 to drive HUD reflector, specifically, worm 103 drives bevel gear 117 to drive HUD reflector to achieve angle adjustment. Due to the existence of assembly gap, not only the adjustment accuracy of HUD reflector is low, but also during the movement of the vehicle, the reflector will shake under the influence of gravity, so that worm 103 will move and vibrate in the axial direction, which is easy to cause structural wear or abnormal noise of motor 102, so that the failure rate of HUD device is high and the service life is short.
[0034] In order to solve the above technical problems, the embodiment of the present application provides a driving module 100 and a HUD reflector.
[0035] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, the embodiment of the present application discloses a driving module 100, including a mounting bracket 101, a motor 102 and a worm 103; the worm 103 is rotatably arranged on the mounting bracket 101, one end of the worm 103 is provided with a mounting shaft 104, and the other end is connected to the motor 102; a limiting shaft sleeve 105 is sleeved on the mounting shaft 104, and a clamping hole 106 is provided on the mounting bracket 101, and the mounting shaft 104 is clamped with the clamping hole 106 through the limiting shaft sleeve 105, and the limiting shaft sleeve 105 is provided with an elastic pressing portion 107 abutting against the end face of the mounting shaft 104 at one end away from the motor 102, and the worm 103 has an abutting surface 108 at one end close to the motor 102, and the mounting bracket 101 has a supporting surface 109 at a position corresponding to the abutting surface 108, and the elastic pressing portion 107 can form an elastic thrust to push the worm 103 to the side of the motor 102, so that the abutting surface 108 abuts against the supporting surface 109.
[0036] It should be noted that the driving module 100 of the embodiment of the present application is configured in the HUD reflector device, and the angle of the HUD reflector can be adjusted by meshing the worm 103 with the gear 117 on the HUD reflector.
[0037] The motor 102 and the worm 103 of the embodiment of the present application are both fixed on the mounting bracket 101, the motor 102 is located at one end of the worm 103, and the mounting shaft 104 is set at the other end of the worm 103. It should be noted that the central axis of the mounting shaft 104 is the rotation axis of the worm 103 on the mounting bracket 101. The embodiment of the present application uses a limiting sleeve 105 to connect the mounting shaft 104 and the mounting bracket 101. The limiting sleeve 105 is connected to the mounting bracket 101 through a clamping structure to ensure that both ends of the worm 103 are rotatably connected. Among them, the mounting shaft 104 can rotate in the limiting sleeve 105.
[0038] It should be noted that after the two ends of the worm 103 are rotationally connected, the worm 103 will form a certain degree of movement displacement in the axial direction due to the problem of assembly accuracy.
[0039] In the embodiment of the present application, an elastic pressing portion 107 is provided on the limiting sleeve 105, and a force is applied to the end surface of the mounting shaft 104 by the elastic pressing portion 107, so that the worm 103 can be pressed tightly against the side of the mounting bracket 101 close to the motor 102 to prevent it from moving in the axial direction.
[0040] The embodiment of the present application discloses a driving module 100, including a mounting bracket 101, a motor 102 and a worm 103; the worm 103 is rotatably arranged on the mounting bracket 101, one end of the worm 103 of the present application is provided with a mounting shaft 104, and the other end is connected to the motor 102; a limiting shaft sleeve 105 is sleeved on the mounting shaft 104, and a clamping hole 106 is provided on the mounting bracket 101, and the mounting shaft 104 of the present application embodiment is connected to the clamping hole 106 through the limiting shaft sleeve 105. 06 is engaged with the motor 102, the end of the limiting sleeve 105 facing away from the motor 102 is provided with an elastic pressing portion 107 that abuts against the end face of the mounting shaft 104, the end of the worm 103 close to the motor 102 is provided with an abutting surface 108, and the mounting bracket 101 is provided with a supporting surface 109 at a position corresponding to the abutting surface 108. The elastic pressing portion 107 of the embodiment of the present application can form an elastic thrust to push the worm 103 to approach the motor 102, so that the abutting surface 108 abuts against the supporting surface 109. Compared with the prior art, the embodiment of the present application implements elastic abutment on the mounting shaft 104 at one end of the worm 103, so that the abutting surface 108 of the worm 103 is in close contact with the supporting surface 109, effectively preventing the worm 103 from moving in the axial direction, which can not only greatly reduce the processing accuracy of this part of the structure, but also effectively eliminate the axial assembly clearance of the worm 103, thereby improving the adjustment accuracy and reliability of the HUD reflector.
[0041] Reference Figure 3 , Figure 4 As shown, as an optional embodiment, a clamping protrusion 110 is provided on the inner wall of the clamping hole 106; the limiting sleeve 105 has a first limiting portion 111 at one end close to the motor 102 and a second limiting portion 112 at the end away from the motor 102, the limiting sleeve 105 is inserted into the clamping hole 106 and driven to rotate by a preset angle, and the first limiting portion 111 and the second limiting portion 112 are respectively located on both sides of the clamping protrusion 110.
[0042] In the embodiment of the present application, a clamping protrusion 110 is provided on the inner wall of the clamping hole 106, and the clamping protrusion 110 extends along the circumferential direction of the inner wall of the clamping hole 106. It should be noted that there may be two, three or four clamping protrusions 110. The specific number of the clamping protrusions 110 is not particularly limited in the embodiment of the present application, and those skilled in the art may set it as needed.
[0043] A groove is formed between adjacent clamping protrusions 110, and the first limiting portion 111 can penetrate the groove. After the limiting sleeve 105 is rotated by a preset angle, the first limiting portion 111 and the second limiting portion 112 are located on both sides of the clamping protrusion 110, so as to realize the limiting installation of the limiting sleeve 105. The circumferential constraint of the limiting sleeve 105 depends on the inner wall of the clamping hole 106, and the constraint and limitation in the axial direction depends on the limiting blocking of the clamping protrusion 110.
[0044] Exemplarily, it can be rotated 45-90° so that the first limiting portion 111 and the second limiting portion 112 are located on both sides of the clamping protrusion 110 .
[0045] Reference Figure 1 , Figure 3 as well as Figure 4 As shown, as an optional embodiment, a limiting hole is provided on the mounting bracket 101, and an extension arm 113 extending radially is provided on the limiting sleeve 105, and a locking protrusion 114 is provided on the side of the extension arm 113 close to the motor 102; after the limiting sleeve 105 is rotated by a preset angle, the locking protrusion 114 is inserted into the limiting hole.
[0046] Furthermore, the embodiment of the present application forms a limiting hole on the mounting bracket 101, and the limiting sleeve 105 is locked by plugging a locking protrusion 114 provided on the radially extending extension arm 113 into the limiting hole, thereby effectively preventing the limiting sleeve 105 from being installed in place and rotating when elastic pressure is applied to the mounting shaft 104, so that the first limiting portion 111 withdraws from the locking hole 106.
[0047] It should be noted that the limiting sleeve 105 provided in the embodiment of the present application is easier to install and disassemble than the traditional retaining spring structure.
[0048] Reference Figure 3, Figure 4 As shown, as an optional implementation, the elastic pressing portion 107 is a U-shaped elastic structure, one end of the U-shaped elastic structure is connected to the extension arm 113 , and the other end abuts against the end surface of the installation shaft 104 away from the motor 102 .
[0049] It should be noted that the elastic pressing portion 107 may be a U-shaped elastic structure, or a structure of other shapes, such as an arc-shaped structure.
[0050] The U-shaped elastic structure can be integrally injection molded with the limiting sleeve 105, or can be separated as two independent components. The U-shaped elastic structure can be made of metal or plastic material, and those skilled in the art can choose according to specific needs.
[0051] Reference Figure 5 , Figure 6 As shown, the embodiment of the present application also discloses a HUD reflector, including a shell 115, a reflector and the above-mentioned driving module 100; the reflector is provided with a reflector shaft 116 rotatably connected to the shell 115, and a gear 117 is provided at the end of the reflector shaft 116; the worm 103 of the driving module 100 is engaged with the gear 117, and the motor 102 can drive the gear 117 to rotate through the worm 103, so that the reflector rotates around the reflector shaft 116.
[0052] It should be noted that in the HUD reflector disclosed in the embodiment of the present application, one end of the worm 103 is directly rotatably connected to the mounting bracket 101 through the shaft hole, and the other end is rotatably connected to the mounting bracket 101 through the limiting sleeve 105. The worm 103 is easy to disassemble and assemble, and while eliminating the radial gap, it can also effectively reduce the processing accuracy of the worm 103, the mounting bracket and other structures at this point, which is conducive to reducing production costs and can obtain a HUD reflector with higher adjustment accuracy.
[0053] The embodiment of the present application also discloses a HUD reflector, comprising a housing 115, a reflector and the above-mentioned drive module 100; the embodiment of the present application adopts the above-mentioned drive module 100 to adjust the angle of the reflector. The reflector of the embodiment of the present application is provided with a reflector shaft 116 rotatably connected to the housing 115, and a gear 117 is provided at the end of the reflector shaft 116; the worm 103 of the drive module 100 is meshed with the gear 117, and the motor 102 can drive the gear 117 to rotate through the worm 103, so that the reflector rotates around the reflector shaft 116. Compared with the prior art, the HUD reflector provided by the embodiment of the present application is supported by the elastic pressing portion 107, so that the worm 103 does not move or vibrate in the axial direction, avoids reverse dragging of the motor 102, thereby avoiding structural wear and abnormal noise of the motor 102, and can greatly improve the structural reliability of the HUD reflector. In addition, the embodiment of the present application can enable the worm 103 to be tightly meshed with the gear 117, so that the HUD reflector has a higher adjustment accuracy.
[0054] Reference Figure 7 As shown, as an optional embodiment, a reflector mounting hole 118 is provided on the mounting bracket 101 of the driving module 100, and one end of the reflector shaft 116 is passed through the reflector mounting hole 118; the mounting bracket 101 is provided with a radial elastic abutment portion 119 in the circumferential direction of the reflector mounting hole 118, and the radial elastic abutment portion 119 abuts against the side wall of the reflector shaft 116.
[0055] Furthermore, in the embodiment of the present application, a radial elastic abutment portion 119 is provided on the circumference of the reflector mounting hole 118. The radial elastic abutment member is used to abut against the side wall of the reflector shaft 116, which can effectively eliminate the radial installation gap of the reflector and improve the stability of the reflector.
[0056] Reference Figure 3 , Figure 6 As shown, as an optional embodiment, a torsion spring 120 is sleeved on the reflector shaft 116, one end of the torsion spring 120 is connected to the reflector or the gear 117, and the other end is connected to the housing 115 or the mounting bracket 101; the torsion spring 120 can generate a force to push the gear 117 to tightly engage with the worm 103.
[0057] Furthermore, in the embodiment of the present application, a torsion spring 120 is directly mounted on the rotating reflector, and an elastic force acting on the reflector is directly generated by the torsion spring 120. The reflector can drive the gear 117 and the worm 103 to engage tightly through the elastic force, thereby further improving the adjustment accuracy of the drive module 100 on the reflector.
[0058] It should be noted that the torsion spring 120 can be sleeved on one end of the reflector shaft 116 or on both ends of the reflector shaft 116 , and those skilled in the art can configure it according to needs.
[0059] Reference Figure 5 , Figure 8 As shown, as an optional embodiment, a slot 121 is provided on the shell 115, one end of the reflector shaft 116 is inserted into the slot 121, a buckle 122 is provided on the slot 121, and the buckle 122 is provided with an elastic limiting portion 123 abutting against the circumferential side wall of the reflector shaft 116. The elastic limiting portion 123 can generate a force to push the reflector shaft 116 to abut against the slot 121.
[0060] Furthermore, in the embodiment of the present application, a radial force is applied to the reflector shaft 116 through the elastic limiting portion 123 on the buckle 122 to prevent the reflector shaft 116 from moving in the slot 121 of the housing 115 .
[0061] The elastic limiting portion 123 is an arc-shaped structural member, and the arc-shaped structural member is in contact with the axial side wall of the reflector shaft 116 .
[0062] Reference Figure 5 As shown, as an optional embodiment, a tension spring 124 is further included, one end of the tension spring 124 is connected to the reflector, and the other end is connected to the housing 115. It should be noted that the end of the reflector shaft 116 is blocked by the blocking plate, and the tension generated by the tension spring 124 causes the reflector shaft 116 to abut against the blocking plate.
[0063] Furthermore, the embodiment of the present application uses a tension spring 124 to limit the axial direction of the reflector shaft 116, effectively preventing the reflector from moving in the axial direction, which is beneficial for making the HUD reflector have higher stability, thereby improving the clarity of the picture.
[0064] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A driving module, characterized in that: The invention comprises a mounting bracket (101), a motor (102) and a worm (103); the worm (103) is rotatably arranged on the mounting bracket (101); one end of the worm (103) is provided with a mounting shaft (104), and the other end is connected to the motor (102); a limiting shaft sleeve (105) is sleeved on the mounting shaft (104); a clamping hole (106) is provided on the mounting bracket (101); the mounting shaft (104) is clamped with the clamping hole (106) through the limiting shaft sleeve (105); An elastic pressing portion (107) abutting against the end surface of the mounting shaft (104) is provided at one end of the positioning sleeve (105) facing away from the motor (102); an abutting surface (108) is provided at one end of the worm (103) close to the motor (102); and the mounting bracket (101) has a supporting surface (109) at a position corresponding to the abutting surface (108); the elastic pressing portion (107) can form an elastic thrust for pushing the worm (103) toward one side of the motor (102), so that the abutting surface (108) abuts against the supporting surface (109).
2. The driving module according to claim 1, characterized in that: The inner wall of the clamping hole (106) is provided with a clamping protrusion (110); the limiting shaft sleeve (105) has a first limiting portion (111) at one end close to the motor (102) and a second limiting portion (112) at one end away from the motor (102); the limiting shaft sleeve (105) is inserted into the clamping hole (106) and driven to rotate at a preset angle; the first limiting portion (111) and the second limiting portion (112) are respectively located on both sides of the clamping protrusion (110).
3. The driving module according to claim 2, characterized in that: The mounting bracket (101) is provided with a limiting hole, the limiting shaft sleeve (105) is provided with an extension arm (113) extending in the radial direction, and the extension arm (113) is provided with a locking protrusion (114) on a side close to the motor (102); after the limiting shaft sleeve (105) is rotated by a preset angle, the locking protrusion (114) is inserted into the limiting hole.
4. The driving module according to claim 3, characterized in that: The elastic pressing portion (107) is a U-shaped elastic structure, one end of which is connected to the extension arm (113), and the other end of which is in contact with the end surface of the installation shaft (104) away from the motor (102).
5. A HUD reflector, characterized in that: The invention comprises a housing (115), a reflector and a driving module (100) as claimed in any one of claims 1 to 4; the reflector is provided with a reflector shaft (116) rotatably connected to the housing (115), and a gear (117) is provided at the end of the reflector shaft (116); the worm (103) of the driving module (100) is meshed with the gear (117), and the motor (102) can drive the gear (117) to rotate through the worm (103), so that the reflector rotates around the reflector shaft (116).
6. The HUD reflector according to claim 5, characterized in that: A reflector mounting hole (118) is provided on the mounting bracket (101) of the driving module (100), and one end of the reflector rotating shaft (116) is inserted into the reflector mounting hole (118); the mounting bracket (101) is provided with a radial elastic abutment portion (119) in the circumferential direction of the reflector mounting hole (118), and the radial elastic abutment portion (119) abuts against the side wall of the reflector rotating shaft (116).
7. The HUD reflector according to claim 5, characterized in that: A torsion spring (120) is sleeved on the reflector rotating shaft (116); one end of the torsion spring (120) is connected to the reflector or the gear (117), and the other end is connected to the housing (115) or the mounting bracket (101); the torsion spring (120) can generate a force that pushes the gear (117) and the worm (103) to mesh tightly.
8. The HUD reflector according to claim 5, characterized in that: The housing (115) is provided with a slot (121), one end of the reflector shaft (116) is inserted into the slot (121), a buckle (122) is provided on the slot (121), and the buckle (122) is provided with an elastic limiting portion (123) abutting against a circumferential side wall of the reflector shaft (116), and the elastic limiting portion (123) can generate a force that pushes the reflector shaft (116) to abut against the slot (121).
9. The HUD reflector according to claim 8, characterized in that: The elastic limiting portion (123) is an arc-shaped structural component, and the arc-shaped structural component is in contact with the axial side wall of the reflector rotating shaft (116).
10. The HUD reflector according to any one of claims 5 to 9, characterized in that: It also includes a tension spring (124), one end of which is connected to the reflector, and the other end of which is connected to the housing (115).