Assembling device, assembling production line, assembling method and digital display instrument

Abstract

The present application relates to the technical field of HUD, in particular to an assembling device, an assembling production line, an assembling method and a head-up display. The assembling device comprises a positioning mechanism for positioning the base, three limiting mechanisms for positioning three side surfaces of the upper cover, a support fixed to the base plate, a pressing plate rotationally connected to the support, a first mounting seat fixed to the base plate, and a suction accessory fixed to the first mounting seat and facing the pressing plate. The pressing plate is provided with at least one bolt positioning piece for guiding the bolts to pass through the upper cover and the base in sequence. The pressing plate presses the upper cover in the pressing state, and the suction accessory adsorbs the pressing plate in the non-working state. The bolt tightening mechanism comprises a bolt tightening gun capable of moving in multiple directions. The bolt tightening gun is arranged to tighten the bolts for fixing the upper cover and the base of the head-up display assembly. The present application integrates the processes of mirror fixing and upper cover assembling.

Description

Technical Field

[0001] This invention relates to the field of HUD technology, and in particular to an assembly device, assembly line, assembly method, and head-up display suitable for HUDs. Background Technology

[0002] A head-up display (HUD), also known as a head-up digital display system, projects important driving information such as speed and navigation onto the driver's windshield, allowing the driver to view driving information without looking down or turning their head.

[0003] The components of a HUD include: a primary reflector, a secondary reflector, an image generation unit (PGU), a motor module, a PCBA, a top cover, a bottom shell, fasteners, internal wiring harnesses, a worm gear, a worm shaft, proximity switches, springs, dustproof film, and diffusion film. The primary reflector is typically an aspherical mirror used to reflect and magnify the image emitted by the PGU.

[0004] The assembly process for the HUD is as follows: Install the PGU and PCBA onto the base, ensuring correct circuit connections. Install the primary and secondary reflectors to form the reflector array, adjusting the reflector angles to ensure the image is correctly projected onto the windshield. Install the motor module and worm gear drive system onto the base and connect them to the PCBA. Install the top cover onto the base and secure it with fasteners. Wiring the internal wiring harness and installing the proximity switch. Apply dustproof and diffusion films to the surfaces of the PGU and reflectors.

[0005] The current HUD assembly process involves first fixing the reflector to the base shell, and then fixing the top cover to the base shell, which is divided into two main production stages. However, each stage is completed at a different workstation. While this can improve production efficiency and assembly quality, it also has some potential drawbacks, such as:

[0006] First, the time required to move components between different workstations increases the product production cycle and reduces production efficiency.

[0007] Second, components may be damaged during handling, especially optical and precision electronic components, which will increase the defect rate and rework costs.

[0008] Third, intermediate inspections are required between the two workstations to ensure that components are not damaged or assembled incorrectly during transfer. This increases the number of inspection steps and costs.

[0009] Fourth, each workstation requires independent equipment and tools, which increases equipment investment and maintenance costs.

[0010] Fifth, two workstations require more production space, which leads to a decrease in the utilization efficiency of the production site.

[0011] 6. If the production speeds of the two workstations are not matched, it will lead to a decrease in the utilization rate of some equipment and an increase in the idle time of the equipment. Summary of the Invention

[0012] To address the shortcomings of existing technologies, this invention discloses an assembly apparatus, an assembly production line, an assembly method, and a head-up digital display.

[0013] The technical solution adopted in this invention is as follows:

[0014] In a first aspect, an assembly apparatus is provided, comprising:

[0015] A positioning mechanism is used to position the base of the head-up display assembly;

[0016] Three limiting mechanisms are used to position the three sides of the top cover of the head-up digital display assembly; each limiting mechanism includes a support fixed to the base plate, a pressure plate rotatably connected to the support, a first mounting base fixed to the base plate, and an adsorption member fixed to the first mounting base facing the pressure plate; wherein, the pressure plate is provided with at least one bolt positioning member, which is used to guide the bolt to pass through the top cover and the base in sequence; when the pressure plate is in the pressed state, it presses the top cover; when the pressure plate is in the non-working state, the adsorption member adsorbs the pressure plate.

[0017] A bolt tightening mechanism includes a bolt tightening gun that can translate and / or rotate in multiple directions; the bolt tightening gun is configured to tighten bolts used to secure the top cover and base of the head-up display assembly.

[0018] In one embodiment of the present invention, the bolt positioning member is provided with a guide channel; the guide channel extends a predetermined distance along the direction of the upper cover.

[0019] In one embodiment of the present invention, the limiting mechanism further includes a fixing seat fixed to the substrate, a fastening member fixed to the fixing seat, and a snap-fit ​​member fixed to the pressure plate near the fastening member; when the pressure plate is in the pressed state, the fastening member and the snap-fit ​​member snap-fit ​​together.

[0020] In one embodiment of the present invention, the limiting mechanism further includes a connector fixed to one side of the pressure plate and an adjusting member connected to the connector; the adjusting member is configured to rotate the pressure plate.

[0021] In one embodiment of the present invention, the positioning mechanism includes a first positioning seat fixed to a substrate and a positioning pin axially passing through the first positioning seat; the first positioning seat has a mating surface adapted to the side of the base of the head-up digital display assembly.

[0022] In one embodiment of the present invention, the positioning mechanism further includes a second mounting base fixed to one side of the first positioning seat, a pressing drive source fixed to the second mounting base, and an action component connected to the action end of the pressing drive source; the action component is configured to rotate and press the upper cover of the head-up digital display assembly.

[0023] In one embodiment of the present invention, the actuating component includes a connecting shaft connected to the actuating end of the pressing drive source, a rotating member for passing through the connecting shaft, and a pressing member detachably connected to the rotating member; wherein the rotating member has an active channel, and the connecting shaft moves along the active channel under the action of the pressing drive source.

[0024] In one embodiment of the invention, an oiling mechanism is further included; the oiling mechanism is configured to oil the reflector of the head-up digital display assembly.

[0025] In one embodiment of the present invention, the oiling mechanism includes a reflector fixing mechanism and an oiling module; the reflector fixing mechanism includes a second positioning seat fixed to the substrate and a support block detachably connected to the second positioning seat; the support block has a positioning surface adapted to the reflector; the oiling module includes a linear module fixed to the substrate and an oiling valve connected to the movable part of the linear module.

[0026] Secondly, an assembly production line is provided, including the assembly apparatus described above.

[0027] Thirdly, an assembly method is provided, utilizing the assembly apparatus described above, comprising the following steps:

[0028] S1. Place the reflector into the reflector fixing mechanism. The reflector fixing mechanism positions the reflector. The oil injection module injects oil into the reflector.

[0029] S2. Place the base on the positioning mechanism, and the positioning mechanism positions the base; place the reflector from step S1 on the base, and fix the reflector and the base.

[0030] S3. Place the top cover on the reflector in step S2. The three limiting mechanisms position the three sides of the top cover. The bolts pass through the top cover and the base in sequence through the bolt positioning parts, and the top cover and the base are fixed by the bolt tightening mechanism.

[0031] Fourthly, a head-up digital display is provided, which is assembled using the assembly line or assembly method described above.

[0032] The technical solution of the present invention has the following advantages compared with the prior art:

[0033] The assembly device described in this invention integrates the processes of mirror fixing and top cover assembly, effectively shortening the production cycle and reducing the risk of damage to precision components during handling. The integrated design reduces the number of equipment required, improves production space utilization, and eliminates equipment idleness caused by speed mismatches between workstations. The coordination between the guide channel and the multi-directional tightening mechanism ensures bolt assembly accuracy and avoids rework due to human error. Attached Figure Description

[0034] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0035] Figure 1 This is a schematic diagram of the assembly device in this invention.

[0036] Figure 2 This is a first-view structural schematic diagram of the limiting mechanism in this invention.

[0037] Figure 3 This is a structural schematic diagram of the limiting mechanism in this invention from a second perspective.

[0038] Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0039] Figure 5 This is a schematic diagram of the positioning mechanism in this invention.

[0040] Figure 6 This is a schematic diagram of the positioning module in this invention.

[0041] Figure 7 This is an exploded view of the positioning module in this invention.

[0042] Figure 8 This is a first-view structural schematic diagram of the oil injection mechanism in this invention.

[0043] Figure 9 This is a second-view structural schematic diagram of the oil injection mechanism in this invention.

[0044] Explanation of reference numerals on the accompanying drawings:

[0045] 10. Limiting mechanism; 101. Pressure plate; 102. Adjusting component; 103. First connecting component; 104. Bolt positioning component; 105. Guide channel; 106. Support component; 107. Support; 108. Rotating shaft; 109. First mounting base; 110. Adsorption component; 111. Fixing base; 112. Fastening component; 113. Snap-fit ​​component; 1131. Boss; 114. Buffer element;

[0046] 20. Positioning mechanism; 201. First positioning seat; 202. Mating surface; 203. Positioning pin; 204. Rotating component; 205. Second mounting seat; 206. Connecting shaft; 207. Pressing drive source; 208. Pressing component;

[0047] 30. Bolt tightening mechanism;

[0048] 40. Reflector fixing mechanism; 401. Second positioning seat; 402. Support block;

[0049] 50. Oil injection module; 501. Linear module; 502. Second connector; 503. Oil injection valve; 504. Oil collection tank;

[0050] 60. Head-up digital display assembly. Detailed Implementation

[0051] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0052] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present invention. Furthermore, in all embodiments, the same reference numerals denote the same elements.

[0053] In existing technologies, the assembly process of head-up display (HUD) is typically divided into two stages: mirror fixing and top cover assembly, completed at different workstations. While this phased production method can improve efficiency in some stages, it also presents problems such as increased handling time due to workstation changes, risk of damage to optical components, increased intermediate inspection steps, redundant equipment investment, and insufficient utilization of production space. For example, after the mirror is fixed, the semi-finished product needs to be transferred to another workstation for top cover assembly. The handling process may cause misalignment or damage to precision components, and two additional sets of positioning fixtures and tightening equipment are required.

[0054] To address these issues, researchers attempted to integrate the mirror fixing and top cover assembly into a single workstation. Observations of existing assembly processes revealed that the positioning accuracy of the mirror and base directly impacted the subsequent top cover assembly quality. Furthermore, in traditional multi-station production, the mirror was prone to displacement during transfer. This led to the concept of integrating mirror fixing, base positioning, and top cover assembly into a single process. A composite positioning device was designed to enable simultaneous completion of multiple processes, eliminating component handling steps.

[0055] Therefore, as Figure 1 As shown, this embodiment proposes an assembly device including a positioning mechanism 20, three limiting mechanisms 10, and a bolt tightening mechanism 30. The positioning mechanism 20 positions the base, the three limiting mechanisms 10 respectively constrain the three sides of the upper cover, and the bolt tightening mechanism 30 is equipped with a multi-directional adjustable bolt tightening gun to complete the tightening operation.

[0056] Among them, such as Figure 5 As shown, the positioning mechanism 20 includes a mating surface 202 that matches the shape of the base's bottom surface. Spatial positioning of the base is achieved through physical contact. Specifically, this can be achieved using a first positioning seat 201 with a contour-following positioning block, ensuring the positional stability of the base during assembly. Combined with... Figure 2 and Figure 3 Each of the three limiting mechanisms 10 includes a support 107 fixed to the substrate, a pressure plate 101 rotatably connected to the support 107 via a rotating shaft 108 and a support member 106, a first mounting base 109 fixed to the substrate, and an adsorption member 110 fixed to the first mounting base 109 facing the pressure plate 101. The pressure plate 101 has at least one bolt positioning member 104, which guides the bolt through the upper cover and the base sequentially. A support member 106 is located at the bottom of the pressure plate 101. A connecting hole is formed on the side of the support member 106 near the support 107, through which the rotating shaft 108 axially passes. The main body of the rotating shaft 108 and the support member 106 are rotatably engaged, and the end of the rotating shaft 108 is rotatably engaged with the support 107.

[0057] When pressed, the pressure plate 101 fixes the top cover; when not in operation, the pressure plate 101 is held in the open position by the adsorption member 110.

[0058] Specifically, after the base is placed on the first positioning seat 201 of the positioning mechanism 20, the reflector is placed at the designated position on the base. After the top cover covers the reflector, the pressure plates 101 of the three limiting mechanisms 10 press together from different directions, guiding the operator or automatic equipment to insert the bolts through the bolt positioning component 104. The multi-degree-of-freedom bolt tightening gun moves according to the preset path, completing the tightening operation of each bolt in sequence, and the entire process is completed in the same station.

[0059] Combination Figure 2 and Figure 3 In this embodiment, the bolt positioning component 104 is provided with a guide channel 105, which extends a preset distance along the direction of the upper cover.

[0060] The guide channel 105 refers to a through structure installed in the bolt positioning member 104 to guide the movement path of the bolt. Specifically, it can be implemented using a cylindrical channel with its inner wall forming a clearance fit with the outer diameter of the bolt. This guide channel 105 ensures that the bolt remains coaxially aligned with the threaded holes of the cover and base by limiting the bolt's vertical offset. The preset distance refers to the extension length of the guide channel 105 in the bolt insertion direction, which can be adjusted according to the bolt length and installation space requirements.

[0061] Specifically, when the pressure plate 101 is in the pressed state, the operator inserts the bolt from the bolt positioning member 104 into the guide channel 105. The inner wall of the guide channel 105 contacts the bolt shank to form a sliding guide, forcing the bolt to move vertically downward along a preset path. The bolt remains vertical under the constraint of the guide channel 105 until it is fully inserted into the threaded hole of the base. During this process, the matching relationship between the length of the guide channel 105 and the bolt stroke prevents the bolt from tilting or getting stuck.

[0062] Combination Figure 3 and Figure 4 This embodiment further proposes that the limiting mechanism 10 also includes a fixing seat 111 fixed to the substrate, a fastening member 112 fixed to the fixing seat 111, and a snap-fit ​​member 113 fixed to the pressure plate 101 near the fastening member 112. In the first state, the pressure plate 101 is snapped together by the fastening member 112 and the snap-fit ​​member 113.

[0063] The fixed base 111 refers to the support structure mounted on the base plate for supporting the fastening element 112. The fastening element 112 refers to a locking element that is rigidly connected to the fixed base 111 and has a groove, for example, it is fixed to the top of the fixed base 111 by bolt connection. The snap-fit ​​element 113 refers to a mating structure that is disposed on the edge of the pressure plate 101 and has a shape complementary to the fastening element 112. Specifically, it can be implemented as a metal sheet with a boss 1131, for example, it is fixed to the edge of the pressure plate 101 by riveting or bolt connection. When the pressure plate 101 is in the closed state, the boss 1131 of the snap-fit ​​element 113 is inserted into the groove of the fastening element 112 to form a mechanical interlock.

[0064] Specifically, when the operator rotates the pressure plate 101 to the closed position, the locking member 113 at the end of the pressure plate 101 contacts the fastening member 112 on the fixing base 111. As the pressure plate 101 continues to press down, the protrusion 1131 of the locking member 113 slides along the groove surface of the fastening member 112 until it is fully embedded in the bottom of the groove to form a stable lock. At this time, a rigid connection is formed between the pressure plate 101 and the base plate, preventing accidental opening due to vibration or external force. When it is necessary to unlock, simply apply a reverse force to make the protrusion 1131 slide out along the groove surface.

[0065] Furthermore, the limiting mechanism 10 also includes a buffer element 114 fixed to the fixed base 111. The buffer element 114 can specifically be a hydraulic buffer, with the working end of the hydraulic buffer facing the pressure plate 101. When the pressure plate 101 rotates to the closed position, when the snap-fit ​​member 113 at the end of the pressure plate 101 contacts the fastener 112 on the fixed base 111, the hydraulic buffer generates a damping force through the flow of oil, absorbing the impact energy and thus reducing the damage of the impact force to the pressure plate 101.

[0066] Combination Figure 2 and Figure 3 This embodiment further proposes that the limiting mechanism 10 also includes a first connecting member 103 fixed to one side of the pressure plate 101 and an adjusting member 102 connected to the first connecting member 103. The adjusting member 102 is configured to rotate the pressure plate 101.

[0067] The first connecting member 103 is a rigid component fixed to one side of the pressure plate 101, which can be implemented using an L-shaped connecting block, and is used to transmit the rotational torque of the adjusting member 102 to the pressure plate 101. The adjusting member 102 is a driving component connected to the first connecting member 103, which can be implemented using a manual handle, and changes the angular position of the pressure plate 101 through rotational movement.

[0068] Specifically, when the state of the pressure plate 101 needs to be adjusted, the rotational action of the adjusting member 102 is transmitted to the pressure plate 101 through the first connecting member 103, causing it to rotate around the rotating shaft 108. When the pressure plate 101 is in the pressed state, rotating the adjusting member 102 causes the pressure plate 101 to press against the upper cover, completing the positioning. In the non-working state, rotating the adjusting member 102 in the opposite direction causes the pressure plate 101 to detach from the upper cover, at which point the suction member 110 suctions the pressure plate 101 to maintain stability. This structure allows the operator to precisely control the position of the pressure plate 101 with a single adjustment action, avoiding positioning deviations caused by multi-step operations.

[0069] Combination Figures 5 to 7 This embodiment further proposes a positioning mechanism 20 including a first positioning seat 201 fixed to a substrate, a positioning pin 203 axially passing through the first positioning seat 201, a second mounting seat 205 fixed to one side of the first positioning seat 201, a pressing drive source 207 fixed to the second mounting seat 205, and an action component connected to the action end of the pressing drive source 207. The first positioning seat 201 has a mating surface 202 adapted to the side of the base of the head-up display assembly 60. The action component is configured to rotatably press the top cover of the head-up display assembly 60. The action component includes a connecting shaft 206 connected to the action end of the pressing drive source 207, a rotating member 204 for passing through the connecting shaft 206, and a pressing member 208 detachably connected to the rotating member 204. The rotating member 204 has an active channel, and the connecting shaft 206 moves along the active channel under the action of the pressing drive source 207.

[0070] The first positioning seat 201 is a support structure used to support the base and restrict its horizontal displacement. Its mating surface 202 is complementary in shape to the side of the base for precise positioning. The positioning pin 203 is a guide component that axially penetrates the first positioning seat 201 and is used to insert into a pre-drilled hole in the base to restrict its rotational freedom. The pressing drive source 207 is a power device that provides linear thrust, which can be implemented using a cylinder or an electric actuator. Its working end transmits linear motion through the connecting shaft 206. The movable channel allows the connecting shaft 206 to move along a specific trajectory during the driving process. The pressing component 208 is a force-applying component bolted to the rotating component 204, which can be implemented using a metal pressure block with a rubber buffer layer, applying vertical downward pressure to the upper cover during rotation.

[0071] Specifically, the base is placed on the mating surface 202 of the first positioning seat 201, with its side completely fitting against the mating surface 202. Simultaneously, the positioning pin 203 is inserted into the corresponding mounting hole of the base, achieving bidirectional positioning constraint. After the pressing drive source 207 is activated, it pushes the connecting shaft 206 to move in a linear direction. Since the connecting shaft 206 passes through the movable channel of the rotating component 204, its linear motion is converted into the rotational motion of the rotating component 204. The rotating component 204 drives the pressing component 208 to rotate around the hinge point, causing the end of the pressing component 208 to gradually press down and contact the surface of the upper cover. When the pressing drive source 207 reaches the preset stroke, the pressing component 208 applies a stable pressing force to the upper cover, ensuring that the upper cover and the base remain tightly fitted. During this process, the length and tilt angle of the movable channel can control the rotation amplitude of the rotating component 204.

[0072] Combination Figure 1 , Figure 8 and Figure 9 This embodiment further proposes that the assembly device also includes an oiling mechanism. The oiling mechanism is configured to oil the reflector of the head-up digital display assembly 60. The oiling mechanism includes a reflector fixing mechanism 40 and an oiling module 50. The reflector fixing mechanism 40 includes a second positioning seat 401 fixed to the substrate and a support block 402 detachably connected to the second positioning seat 401. The support block 402 has a positioning surface adapted to the reflector. The oiling module 50 includes a linear module 501 fixed to the substrate and an oiling valve 503 connected to the movable part of the linear module 501 via a second connector 502. The second connector 502 may be an L-shaped part, with one side of the second connector 502 fixedly connected to the linear module 501 and the other side fixedly connected to the oiling valve 503.

[0073] Among them, the reflector fixing mechanism 40 refers to the positioning device used to fix the reflector. Specifically, it can be implemented by a support block 402 with a contoured positioning surface, which achieves displacement-free fixing by matching the curved shape of the reflector.

[0074] Linear module 501 refers to the actuator that drives the oil injection valve 503 to move. Specifically, it can be implemented using a ball screw structure driven by a servo motor.

[0075] Specifically, after the reflector is placed on the positioning surface of the support block 402, the linear module 501 drives the oil injection valve 503 to move along a preset trajectory, and the nozzle of the oil injection valve 503 sprays a metered amount of grease into the reflector area at a constant pressure. During the oil injection process, the support block 402 keeps the reflector stable. After the oil injection is completed, the reflector directly enters the assembly process.

[0076] Furthermore, the oil injection module 50 also includes an oil collection tank 504 located at the actuating end of the oil injection valve 503. The oil collection tank 504 is used to collect oil that may leak or overflow during the oil injection process in order to keep the work area clean and safe.

[0077] The working principle of this invention is as follows:

[0078] S1. Place the reflector in the reflector fixing mechanism 40. The reflector fixing mechanism 40 positions the reflector. The oil injection module 50 injects oil into the reflector.

[0079] S2. Place the base on the positioning mechanism 20, and the positioning mechanism 20 positions the base. The reflector from step S1 is placed on the base, and the reflector and the base are fixed.

[0080] S3. Place the top cover on the reflector from step S2. The three limiting mechanisms 10 position the three sides of the top cover. Bolts pass through the top cover and the base sequentially via bolt positioning parts 104, and the top cover and the base are fixed by the bolt tightening mechanism 30.

[0081] Specifically, the reflector is first placed on the positioning surface of the support block 402. The linear module 501 drives the oil injection valve 503 to move to the oil injection hole position on the edge of the reflector to complete the oil injection operation. The base is then loaded onto the first positioning seat 201 of the positioning mechanism 20. The mating surface 202 of the first positioning seat 201 is completely in contact with the bottom surface of the base. The pressing drive source 207 pushes the pressing part 208 to press and fix the base. The oiled reflector is transferred to the surface of the base and initially fixed by bolt connection. After the top cover is placed above the reflector, the three limiting mechanisms 10 act simultaneously: the pressure plate 101 rotates to the working position under the drive of the adjusting part 102, and the fastening part 112 and the snap-fit ​​part 113 complete the mechanical locking. The operator inserts the bolt into the bolt positioning part 104 and through the guide channel 105. Under the action of gravity, the bolt slides along the guide channel 105 into the connection hole between the top cover and the base. The bolt tightening mechanism 30 completes the bolt tightening according to the set torque.

[0082] This embodiment also proposes an assembly production line, including the above-mentioned assembly device and other functional modules.

[0083] The assembly line refers to a system that integrates multiple functional modules into a continuous operation unit. This can be achieved through interlocking control of robotic arms and workstations, eliminating the need to transfer components between different workstations. This production line integrates base positioning, mirror lubrication, cover limiting, and bolt tightening into a continuous process.

[0084] This embodiment also proposes a head-up digital display (HUD), which is assembled using the above-described assembly line or assembly method. The HUD includes a main reflector, a secondary reflector, an image generation unit (PGU), a motor module, a PCBA, a top cover, a bottom shell, fasteners, internal wiring harnesses, a worm gear, a worm shaft, a proximity switch, a spring, internal wiring harnesses, a dustproof film, and a diffusion film, etc.

[0085] It should be noted that the main design feature of this invention lies in the structural improvement of the assembly device. Other structures of the head-up display, such as the electrical connection part and mechanical structure part of the head-up display, will not be described in detail.

[0086] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0087] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An assembly device, characterized by include: A positioning mechanism (20) is used to position the base of the head-up digital display assembly (60); the positioning mechanism (20) includes a first positioning seat (201) fixed to the base plate, a positioning pin (203) axially passing through the first positioning seat (201), a second mounting seat (205) fixed to one side of the first positioning seat (201), a pressing drive source (207) fixed to the second mounting seat (205), and an action component connected to the action end of the pressing drive source (207); the first positioning seat (201) has a mating surface (202) adapted to the side of the base of the head-up digital display assembly (60); the action component is configured to rotatably press the top cover of the head-up digital display assembly (60); Three limiting mechanisms (10) are used to position the three sides of the top cover of the head-up digital display assembly (60); the limiting mechanism (10) includes a support (107) fixed to the base plate, a pressure plate (101) rotatably connected to the support (107), a first mounting base (109) fixed to the base plate, and an adsorption member (110) fixed to the first mounting base (109) facing the pressure plate (101); wherein, the pressure plate (101) is provided with at least one bolt positioning member (104), the bolt positioning member (104) is used to guide the bolt to pass through the top cover and the base in sequence; when the pressure plate (101) is in the pressed state, it presses the top cover, and when the pressure plate (101) is in the non-working state, the adsorption member (110) adsorbs the pressure plate (101). The limiting mechanism (10) further includes a fixing seat (111) fixed to the base plate, a fastening member (112) fixed to the fixing seat (111), and a snap-fit ​​member (113) fixed to the pressure plate (101) near the fastening member (112); when the pressure plate (101) is in the pressed state, the fastening member (112) and the snap-fit ​​member (113) snap together; The bolt tightening mechanism (30) includes a bolt tightening gun that can translate and / or rotate in multiple directions; the bolt tightening gun is configured to tighten bolts used to secure the top cover and base of the head-up digital display assembly (60); The oiling mechanism is configured to oil the reflector of the head-up digital display assembly (60); the oiling mechanism includes a reflector fixing mechanism (40) and an oiling module (50); the reflector fixing mechanism (40) includes a second positioning seat (401) fixed to the substrate and a support block (402) detachably connected to the second positioning seat (401); the support block (402) has a positioning surface adapted to the reflector; the oiling module (50) includes a linear module (501) fixed to the substrate and an oiling valve (503) connected to the movable part of the linear module (501).

2. The assembly apparatus of claim 1, wherein, The bolt positioning component (104) is provided with a guide channel (105); the guide channel (105) extends a preset distance along the direction of the upper cover.

3. The assembly apparatus according to claim 1, characterized in that, The limiting mechanism (10) further includes a connector (103) fixed to one side of the pressure plate (101) and an adjusting member (102) connected to the connector (103); the adjusting member (102) is configured to rotate the pressure plate (101).

4. The assembly apparatus according to claim 1, characterized in that, The functional components include a connecting shaft (206) connected to the working end of the pressing drive source (207), a rotating member (204) for passing through the connecting shaft (206), and a pressing member (208) detachably connected to the rotating member (204); wherein the rotating member (204) has an active channel, and the connecting shaft (206) moves along the active channel under the action of the pressing drive source (207).

5. An assembly production line, characterized in that, Includes the assembly apparatus as described in any one of claims 1-4.

6. An assembly method, characterized in that, The assembly apparatus according to any one of claims 1-4 includes the following steps: S1. Place the reflector in the reflector fixing mechanism (40), the reflector fixing mechanism (40) positions the reflector, and the oil injection module (50) injects oil into the reflector; S2. Place the base on the positioning mechanism (20), and the positioning mechanism (20) positions the base; the reflector in step S1 is placed on the base, and the reflector and the base are fixed. S3. Place the top cover on the reflector in step S2. The three limiting mechanisms (10) position the three sides of the top cover. The bolts pass through the top cover and the base in sequence through the bolt positioning parts (104), and the top cover and the base are fixed by the bolt tightening mechanism (30).

7. A heads-up digital display, characterized in that, It is assembled using the assembly line as described in claim 5 or the assembly method as described in claim 6.

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