CN210270240U - Take engineering resin HUD speculum of micro-stress assembly structure - Google Patents

Abstract

The utility model relates to an engineering resin HUD reflector with a micro-stress assembly structure, which comprises a reflector optical surface main body, wherein the reflector optical surface main body comprises a substrate layer, the substrate layer is covered with a bonding film layer, the bonding film layer is covered with a metal film layer, and the metal film layer is covered with a protective film layer; the periphery of the reflector optical surface main body is provided with edge reinforcing ribs; reflector mounting lugs are symmetrically arranged in the middle of the lower edges of the left side edge and the right side edge of the edge reinforcing rib, and mounting lug stress-relieving grooves are formed in the intersection positions of the edge reinforcing rib and the two sides of the reflector mounting lugs; and optical surface stress relief grooves are formed in the middle of the left side surface and the right side surface of the reflector optical surface main body. The method can be applied to one-step forming to realize various curved surface types with assembly structures; the precision of the optical surface type of the reflector molding and the subsequent assembly is ensured, and the influence of self plastic deformation and assembly stress is eliminated.

Description

Take engineering resin HUD speculum of micro-stress assembly structure

Technical Field

The utility model relates to the field of optical technology, especially a take engineering resin HUD speculum of micro-stress assembly structure.

Background

At present, in order to realize a new human-vehicle conversation mode and improve the further pursuit of the great number of automobile consumers for perfect driving experience, the mass introduction of an augmented reality technology has been tried on some foreign middle-high-end automobile models. Therefore, automakers of domestic autonomous brands are also currently beginning to actively develop and introduce an AR-HUD (augmented reality) vehicle-mounted head-up display, which accurately integrates image information into actual traffic road conditions through an internal specially designed optical system, thereby expanding the perception of the rider of the actual driving environment. The core component of the AR-HUD system is the HUD mirror. The HUD reflector belongs to a part with optical imaging requirements, the requirement on the surface type precision of an optical functional surface is very high, particularly, the popularization of the existing mature plastic molding technology is combined with an optical mold with high precision processing, the HUD reflector is approved and widely adopted, the plastic molding HUD reflector scheme with low cost is realized, more specifically, the optical aspheric reflector with certain length-width proportion specification and thickness is molded by adopting engineering resin, and the structure of the reflector on the whole is required to be simple without an auxiliary structure. Due to the fact that engineering resin is adopted as a base material, once the structural design is not reasonable, plasticity or stress deformation objectively existing in the plastic part can be caused. Therefore, in order to ensure the surface type precision of the reflector, as shown in fig. 1, the assembly structure of the HUD reflector and the optical surface main body of the reflector cannot be designed into a whole, and the parts of the adaptation structure of the reflector need to be additionally designed, which increases the manufacturing cost of parts of the AR-HUD system, and becomes a difficult point for popularizing the configuration and realizing the technology in the automobile industry.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model aims at providing a take engineering resin HUD speculum of micro-stress assembly structure ensures the optics face type precision of speculum shaping and back assembly, eliminates self plastic deformation and assembly stress influence.

The embodiment of the utility model provides an in adopt following scheme to realize: the engineering resin HUD reflector with the micro-stress assembly structure comprises a reflector optical surface main body, wherein the reflector optical surface main body comprises a protective film layer, a metal film layer, a bonding film layer and a substrate layer; the substrate layer is covered with the bonding film layer, the bonding film layer is covered with the metal film layer, and the metal film layer is covered with the protective film layer; a circle of edge reinforcing ribs are arranged around the periphery of the reflector optical surface main body; reflector mounting lugs are symmetrically arranged in the middle of the lower edges of the left side edge and the right side edge of the edge reinforcing rib, and mounting lug stress-relieving grooves are formed in the intersection positions of the edge reinforcing rib and the two sides of the reflector mounting lugs; and optical surface stress relief grooves are formed in the middle of the left side surface and the right side surface of the reflector optical surface main body.

The utility model relates to an in the embodiment, the width W of edge reinforcement muscle is no longer than 60% of 10 design thickness d of substrate layer, the high H of edge reinforcement muscle is no longer than the design thickness d of substrate layer.

The utility model relates to an embodiment, the top edge at edge reinforcement muscle left side limit, right side limit middle part is seted up flutedly, is located the top of speculum installation journal stirrup.

The utility model has the advantages that: the utility model provides an engineering resin HUD reflector with a micro-stress assembly structure, which aims at simplifying the design of AR-HUD system parts and also realizes the lightweight of system design;

the reflector optical surface main body and the assembly structure are optimized to be integrally designed, so that the reflector optical surface main body and the assembly structure can be applied to one-step molding to realize reflectors with various curved surface types and assembly structures; the optical surface shape precision of reflector molding and subsequent assembly is ensured, and the influence of self plastic deformation and assembly stress is eliminated; have plasticity, lightweight, and can ensure to realize the integrated shaping of HUD speculum optics face main part and assembly structure under the prerequisite of optics face type precision, compare current technical HUD speculum and make production technology, it can effectively avoid follow-up because of assembly stress, mounting structure warp influences optics face type precision, has promoted AR-HUD system whole imaging's reliability and stability.

Drawings

Fig. 1 is a schematic structural view of a conventional HUD mirror.

FIG. 2 is a schematic diagram of an engineered resin HUD mirror with a micro-stress mounting structure.

FIG. 3 is a sectional view taken along line A-A of an engineered resin HUD mirror with a micro-stress mounting structure.

FIG. 4 is a partially enlarged schematic view of a cross-sectional view A-A of an engineered resin HUD mirror with a micro-stress mounting structure.

FIG. 5 is a schematic diagram of an engineered resin HUD mirror with a micro-stress mounting structure.

FIG. 6 is a schematic view of a second embodiment of a mirror mounting lug of an engineered resin HUD mirror with a micro-stress mounting structure.

FIG. 7 is a schematic view of a third embodiment of a mirror mounting lug for an engineered resin HUD mirror with a micro-stress mounting structure.

FIG. 8 is a schematic drawing showing the dimensioning of an engineered resin HUD mirror with a microstress mounting structure.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 2 to 8, the utility model provides an engineering resin HUD reflector with a micro-stress assembly structure, which comprises a reflector optical surface main body 5, wherein the reflector optical surface main body 5 comprises a protective film layer 7, a metal film layer 8, a following film layer 9 and a substrate layer 10; the substrate layer 10 is structurally positioned at the bottommost layer of the reflector optical surface main body 5, and is used for receiving a multilayer composite coating material on one hand and ensuring that the optical surface type approaches the design requirement on the other hand so as to realize the established optical design; the substrate layer 10 is covered with the bonding film layer 9, the bonding film layer 9 is covered with the metal film layer 8, the bonding film layer 9 plays a role in firmly bonding the substrate layer 10 and the metal reflection film layer respectively, and the metal film layer 8 plays a role in achieving an optical reflection function index of the reflector; the metal film layer 8 is covered with the protective film layer 7, the protective film layer 7 plays a role in protecting the optical surface, the weather resistance, oxidation resistance and scratch resistance of the composite film material can be improved under the extreme environmental condition, and the optical function indexes of the reflector are prevented from being attenuated or failed due to failure, scratch, even peeling and the like of the composite film material caused by external environmental factors; a circle of edge reinforcing ribs 4 are arranged around the periphery of the reflector optical surface main body 5, the edge reinforcing ribs 4 are used for improving the structural strength of the reflector optical surface main body 5, the out-of-control surface type precision of the reflector optical surface main body 5 caused by the stress deformation of a plastic part in the long-term use process is avoided, and the function of ensuring the surface type precision of the reflector optical surface main body 5 is achieved; reflector mounting lugs are symmetrically arranged in the middle of the lower edges of the left side edge and the right side edge of the edge reinforcing rib 4, mounting lug destressing grooves 1 are formed in the intersection positions of the edge reinforcing rib 4 and the two sides of the reflector mounting lug, the mounting lug destressing grooves 1 eliminate the phenomenon of assembly stress concentration potentially generated in the reflector assembly process, and provide more elastic change allowance for the mounting lugs 6; the optical surface stress relief groove 11 is formed in the middle of the left side surface and the right side surface of the reflector optical surface main body 5, stress influence possibly existing at the joint of the reflector optical surface main body 5 and the reflector mounting support lug 6 is further eliminated, and stress transmitted to the reflector optical surface main body 5 once the reflector mounting support lug 6 is subjected to plastic deformation is blocked.

Please refer to fig. 2 to 5 and fig. 8, in an embodiment of the present invention, the width W of the edge bead 4 is not more than 60% of the designed thickness d of the substrate layer 10, and is more than the width W, which is easy to cause shrinkage after the circumference of the optical surface main body 5 of the reflector is molded; the height H of edge reinforcement 4 is no longer than the design thickness d of substrate layer 10 exceeds and leads to the substrate 10 shaping drawing of patterns difficulty easily, and the face type precision of reflector optical surface main part 5 is influenced to the unbalance after ejecting.

Referring to fig. 5, in an embodiment of the present invention, the upper edge of the middle portion of the left side and the right side of the edge reinforcing rib 4 is provided with a groove 3 located above the reflector mounting lug 6.

Referring to fig. 5 to 7, in an embodiment of the present invention, the reflector mounting lug 6 is used to ensure that the reflector can be well matched with other components, and even can realize a predetermined optical design function, such as a change of an optical incident angle; the reflector can be designed into various shapes according to specific opponent parts, and can be a plane support lug, and a reflector assembling hole 2 is formed in the plane support lug; or a cylindrical rotary lug; or a buckle lug; the fitting manner is not limited to one form of the fitting hole. The shape of the reflector optical surface main body 5 may be a plane, a spherical surface, or a free-form surface.

The utility model discloses the theory of operation below has:

the main body of the optical surface of the reflector is realized by covering a substrate 10 with a multilayer composite film material, in the process, a protective film material 7, a metal film material 8 and a following film material 9 are introduced into coating equipment, and the process is realized by sequentially coating the following film material 9 on the substrate 10; the metal film material 8 is plated on the following film material 9; the guard film material 7 is finally plated onto the metal film material 8. In order to reliably realize the optical performance index of the reflector, the several layers of composite film materials play a crucial role. The metal film layer material may be a metal aluminum film or a metal silver film. The substrate layer is a plastic substrate.

The mounting lug stress relief groove plays a role in eliminating the phenomenon of assembly stress concentration potentially generated in the assembly process of the reflector and provides more elastic change allowance for the mounting lug 6; the optical surface stress relief groove 11 further eliminates stress influence possibly existing at the joint of the reflector optical surface main body 5 and the reflector mounting lug 6, and prevents the stress of the reflector mounting lug 6 once undergoing plastic deformation from being transferred to the reflector optical surface main body 5.

The above description is only for the preferred embodiment of the present invention, and should not be interpreted as limiting the scope of the present invention, which is intended to cover all the equivalent changes and modifications made in accordance with the claims of the present invention.

Claims (3)

1. The utility model provides a take engineering resin HUD speculum of micro-stress assembly structure which characterized in that: the optical surface of the reflector comprises a reflector optical surface main body, wherein the reflector optical surface main body comprises a protective film layer, a metal film layer, a bonding film layer and a substrate layer; the substrate layer is covered with the bonding film layer, the bonding film layer is covered with the metal film layer, and the metal film layer is covered with the protective film layer; a circle of edge reinforcing ribs are arranged around the periphery of the reflector optical surface main body; reflector mounting lugs are symmetrically arranged in the middle of the lower edges of the left side edge and the right side edge of the edge reinforcing rib, and mounting lug stress-relieving grooves are formed in the intersection positions of the edge reinforcing rib and the two sides of the reflector mounting lugs; and optical surface stress relief grooves are formed in the middle of the left side surface and the right side surface of the reflector optical surface main body.

2. The engineered resin HUD mirror with a microstress mounting structure of claim 1, wherein: the width W of edge reinforcement rib is no more than 60% of design thickness d of substrate layer 10, the height H of edge reinforcement rib is no more than the design thickness d of substrate layer.

3. The engineered resin HUD mirror with a microstress mounting structure of claim 1, wherein: the upper edges of the middle parts of the left side edge and the right side edge of the edge reinforcing rib are provided with grooves which are positioned above the reflector mounting support lugs.

Images