CN114274875B - Frameless external rearview mirror - Google Patents

Abstract

The invention relates to a borderless external rearview mirror, which comprises a lens and a mirror foot, wherein the lens comprises a folding mechanism, a steering mechanism, a sealing structure and a substrate, the mirror housing is covered on the outermost part of the lens, the mirror foot passes through a hole below the mirror housing to be connected with the folding mechanism, and the sealing structure is arranged at the position of a hole of the mirror housing. The lens, the mirror ring and the mirror shell are combined to form the outline of the borderless outer rearview mirror, so that the space occupied by the traditional mirror shell is saved, the size of the lens is reduced, and the front visual field range is enlarged; the vibration damper arranged between the baseplate and the mirror ring can weaken the vibration of the lens of the frameless outer rearview mirror in a bumpy road section, improve the driving safety and prolong the service life of the outer rearview mirror; the electric steering gear of the steering mechanism drives the whole lens to rotate, which is different from the traditional external rearview mirror which only rotates the lens; the sealing structure arranged at the opening of the mirror shell is an elastic sealing structure, so that rainwater, wind and dust can be effectively prevented from entering the lens, normal work of parts in the lens is affected, and the reliability of the outer rearview mirror is improved.

Description

Frameless external rearview mirror

Technical Field

The invention relates to the technical field of automobile exterior rearview mirrors, in particular to a borderless exterior rearview mirror.

Background

When a driver drives a car to go ahead, the driver needs to know the condition of the side rear part of the car body through the rearview mirror while looking ahead, comprehensively makes a judgment, and if the driver does not have the rearview mirror or even cannot drive the car normally, the visible rearview mirror is very important for the car. The rear view mirror generally includes an inner rear view mirror reflecting the rear and in-vehicle conditions, and an outer rear view mirror reflecting the side and rear conditions.

Exterior mirrors are typically located on either side of the front of the vehicle body, and are typically mounted to the vehicle door. The outer rearview mirror simply comprises a lens and a lens foot, wherein the lens foot is connected with a vehicle door or a vehicle body and is positioned outside the vehicle door or the vehicle body, the lens is connected with the lens foot, the lens is a generic name of parts such as a lens shell, a reflecting element, an actuator and the like, and the lens can be folded around the lens foot to the direction of the vehicle body.

As a walking aid, automobiles are considered for safety and reliability. However, with the popularization of automobiles, the automobile is not used as a walking tool, customers begin to pay attention to the experience (such as comfort and operability) and the attractive and fashion appearance of users, and the pursuit of various aspects of automobiles promotes the rapid development of automobile related technologies. Similarly, the performance of the exterior mirror is directly related to the driving safety, and the appearance of the exterior mirror is also directly influencing the vision of people as an exterior part, so that the exterior mirror is also paid attention to. Therefore, the outer rearview mirror needs to be updated, and firstly, from the application of the outer rearview mirror, a driver hopes to enlarge the visual field range, so that correct judgment on the surrounding conditions of the automobile is facilitated, and the driving is safer; meanwhile, when the outer rearview mirror meets bumpy road sections such as mountain roads, the outer rearview mirror can still be normally used, and driving safety is guaranteed; secondly, from the reliability, the structure of the outer rearview mirror can prevent rainwater, wind and dust from entering the lens, and ensure the normal operation of the outer rearview mirror; thirdly, in the aspect of appearance, people pay more attention to whether the appearance of various products is attractive and fashionable in recent years, and the external rearview mirror is no exception. The prior art exterior rear view mirror is in need of improvement in all three aspects.

Disclosure of Invention

Aiming at the defects or shortcomings of the prior art, the technical problem to be solved by the invention is to provide the rimless external rearview mirror which can provide a wider visual field, is good in sealing performance, high in safety and reliability and attractive in appearance, and can cope with special road sections.

In order to solve the technical problems, the invention comprises the following components:

The frameless external rearview mirror comprises a lens and a mirror foot, wherein the mirror foot is connected to the outside of a vehicle body, and the lens is connected with the mirror foot; the lens shell covers the outermost part of the lens, the lens foot passes through the avoiding hole below the lens shell and is connected with the folding mechanism, and the sealing structure is arranged at the avoiding hole of the lens shell;

The steering mechanism comprises an electric steering gear, a mirror ring mounting plate, a mirror ring and a lens in sequence, adjacent parts are connected, a connecting plate of the electric steering gear is mounted on the base plate, a steering motor of the electric steering gear is rotatably connected with the connecting plate, clamping legs of the steering motor penetrate through corresponding clamping holes in the connecting plate to be clamped, and the steering motor drives the mirror ring mounting plate, the mirror ring, the lens and the mirror shell to rotate together in a certain angle in the direction limited by the clamping legs; the mirror shell is provided with an inner cavity, the back of the mirror ring is embedded into an inner cavity opening, the end face of the inner cavity opening is pressed on the back of the mirror ring, the outer curve of the mirror shell is smoothly connected with the circular arc of the outer surface of the mirror ring, and the lens is arranged on the bottom surface of the thin-wall shell wall on the front of the mirror ring to form a frame-free outer rearview mirror structure; the folding mechanism comprises a pin shaft and a folding motor, the pin shaft is a long shaft-shaped part and comprises a head and a rod part, the head is fixedly arranged on the mirror foot, the rod part of the pin shaft is rotatably connected with the folding motor, the folding motor can rotate around the fixed pin shaft, the folding mechanism is arranged in a cavity of the base plate, the folding motor is fixedly connected with the base plate, and a hole is formed in the upper portion of the cavity for the pin shaft part to pass through. The pin shaft is axially fixed, and the folding motor drives the substrate to drive the steering mechanism and the mirror shell on the substrate to rotate around the pin shaft together so as to realize the folding action of the outer rearview mirror; the sealing structure is arranged between the mirror shell and the pin shaft and is elastic, and when the lens turns or is folded, the sealing structure can stretch out and draw back along with the lens.

The frameless outer rearview mirror further comprises a vibration damper which is arranged between the base plate and the mirror ring mounting plate of the steering mechanism, and vibration of the outer rearview mirror is reduced in a mode that the space formed by the upper inner wall and the lower inner wall of the groove limits the displacement of the protruding structure accommodated in the space.

The mirror ring mounting plate sets up bellied pivot portion towards base plate one side, pivot portion appearance is cavity structure, cavity opening towards base plate, two cavity wall supports installation round axle, and the round axle does not rotate, sets up the rectangular shape limiting plate that stretches to the pivot portion on the base plate, limiting plate surface perpendicular to round axle axis, open the groove in the middle of the limiting plate and form two upper and lower slender teeth, in slender teeth insert the cavity of pivot portion, the round axle transversely passes logical groove simultaneously, the upper and lower side limit round axle's of logical groove upper and lower displacement.

A limiting structure is arranged between a pin shaft of the folding mechanism and a substrate, L-shaped limiting blocks are protruded from the side edges of the annular surface of the pin shaft, limiting rings are arranged at the lower portion of the substrate, the limiting blocks are located in grooves defined by the limiting rings, and when the substrate rotates in the forward and reverse directions until two ends of the limiting rings are respectively contacted with the limiting blocks of the fixed pin shaft, the limiting blocks prevent the substrate from continuing to rotate.

When the pin shaft portion is axially fixed with the base plate, the end portion of the pin shaft portion is sequentially sleeved with a spring, a gasket and a clamp spring, the spring is in surface contact with the base plate, the clamp spring is located at the extreme end of the shaft portion, and when the base plate rotates around the pin shaft, the elastic force of the spring acts on the base plate.

In the folding mechanism, a rotatable connection structure between a pin shaft part and a folding motor is characterized in that a plurality of trapezoid teeth are uniformly distributed on the circumference of an annular surface of a pin shaft head part, the side surfaces of the trapezoid teeth are inclined planes, a plurality of trapezoid grooves are uniformly formed on the circumference of the lower end surface of a folding disc part of the folding motor, the trapezoid teeth are clamped into the trapezoid grooves and transmit resistance, the pin shaft blocks the folding disc part from rotating, and a rotating part of the folding motor drives a substrate to rotate around the folding disc part and the pin shaft.

In the steering mechanism, a central shaft of a steering motor and a central hole of a connecting plate are in spherical fit, two pairs of clamping feet extend out of one side of the steering motor towards the connecting plate, each pair of clamping feet are symmetrically arranged relative to the central shaft of the steering motor, a connecting line of each pair of clamping feet is an axis for steering a lens, two rotation directions of the lens are determined by two axes formed by the two pairs of clamping feet, the clamping feet penetrate through four corresponding clamping holes on the connecting plate, the end parts of the clamping feet cannot be reversely separated, and the clamping feet have a certain length, so that a certain rotation space is provided for the steering motor.

The mirror shell is divided into an upper part and a lower part, the lower part is a secondary mirror shell, the upper part is a decorative cover, the secondary mirror shell is fixed on the mirror ring mounting plate, the lower end face and the front end face of the decorative cover are respectively fastened on the secondary mirror shell and the mirror ring, and the decorative cover and the secondary mirror shell enclose an inner cavity.

The sealing structure comprises a sealing ring, a sealing flange and a pressing sleeve, wherein the sealing ring is of a shaft sleeve-shaped structure, the sealing ring is sleeved on a pin shaft, the lower part of the sealing ring is in contact with a mirror foot, a labyrinth seal is formed between an inner hole of the sealing ring and the pin shaft and the mirror foot, the sealing flange is made of soft materials, a lip edge of the sealing flange is fixed on the sealing ring, a flat pad part of the sealing flange is fixed on a mirror shell through the pressing sleeve, a corrugated part connecting the lip edge and the flat pad part is a wavy connecting body formed by repeatedly folding, the sealing flange has larger expansion and contraction amount, and the sealing structure is elastically connected between the mirror shell and the pin shaft.

The mirror foot is the support subassembly, and the support subassembly includes support and support guard shield, and support and automobile body coupling, support outside towards the automobile body one side have bellied cylindrical spliced pole, open the circular constant head tank with the axle center in the spliced pole, and the round pin axle head holds in the constant head tank and fixes in the constant head tank bottom, and the inside open hole intercommunication of constant head tank bottom and round pin axle is in order to hold the pencil of connecting lens and automobile body, and the support guard shield covers in the support outside, and the support is fixed a position the support guard shield.

Compared with the prior art, the invention has the advantages that:

the frameless rearview mirror omits the space occupied by the outer eave type mirror shell of the traditional lens, can enlarge the area of the lens, enlarge the rear view field, or reduce the size of the lens, enlarge the front view field range, ensure that a driver has wider view field and improve the driving safety.

The vibration damper of the frameless rearview mirror can weaken the vibration of the lens of the frameless outer rearview mirror on a bumpy road section, improve the safety of the driving process and prolong the service life of the outer rearview mirror.

The electric steering gear of the steering mechanism drives the whole lens to rotate, and is different from the traditional external rearview mirror which only rotates the lens, and the novel steering mechanism can only meet the requirements of the borderless external rearview mirror.

The sealing structure provided by the invention is an elastic sealing structure, can effectively prevent rainwater, wind and dust from entering the lens, and is very suitable for the situation that the whole lens of the frameless external rearview mirror is folded and turned.

The external circular arcs of the rimless external rearview mirror are smoothly connected, and the rimless external rearview mirror has more attractive and fashionable appearance.

Drawings

The following drawings are included to provide a further understanding of the invention and are not to be construed as limiting the invention.

Fig. 1: the external view of the rimless external rearview mirror is shown in the figure;

Fig. 2: the internal structure diagram of the movable decorative cover of the rimless outer rearview mirror is that the decorative cover is moved;

fig. 3: an exploded view of the structure of the rimless exterior mirror of the present invention;

Fig. 4: the invention relates to a perspective view of a pin shaft of a rimless outer rearview mirror;

fig. 5: a perspective view of a substrate of the rimless exterior mirror of the present invention;

fig. 6: the limit structure diagram of the folding mechanism of the rimless outer rearview mirror is provided;

Fig. 7: the invention relates to a perspective view of an electric driver of a rimless outer rearview mirror;

Fig. 8: the invention relates to a mirror ring mounting plate of a rimless outer rearview mirror and a perspective view of a mirror ring;

Fig. 9: the sealing structure of the rimless outer rearview mirror is a perspective view;

fig. 10: the sealing structure of the rimless outer rearview mirror is a cross-sectional view;

fig. 11: the invention relates to a perspective view of a vibration damper of a rimless outer rearview mirror.

Detailed Description

The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.

As shown in fig. 1, the borderless exterior mirror includes a lens and a temple.

As shown in fig. 2, the lens of the rimless exterior rear view mirror of the present invention includes a folding mechanism 200, a steering mechanism 300, a sealing structure 400 and a mirror housing 350, the folding mechanism 200 and the steering mechanism 300 share one substrate 100, the folding mechanism 200 is longitudinally arranged, the steering mechanism 300 is installed at one lateral side of the substrate 100, and the folding mechanism 200 and the steering mechanism 300 respectively implement folding and up-down and left-right steering of the lens.

The temple is a bracket assembly 500 (see fig. 1), the bracket assembly 500 being attached to the exterior of the door or body,

Referring to fig. 2, the lens housing 350 covers the outermost portion of the lens, the support assembly 500 is connected to the folding mechanism 200 through the avoidance hole 355 below the lens housing 350, and a sealing structure 400 is disposed at the avoidance hole 355 of the lens housing 350 to prevent wind, rain and pollutants from entering the lens.

The support assembly 500 is constructed as shown in fig. 3, the support assembly 500 includes a support 510 and a support cover 520, the support 510 is connected to a vehicle body, the support cover 520 covers the outside of the support 510, and the support 510 positions the support cover 520.

Specifically, the support 510 has a cylindrical protruding connecting post 511 on the outer side of the vehicle body, a concentric circular positioning groove 512 is formed in the connecting post 511, the head 211 of the pin 210 is accommodated in the positioning groove 512 and fixed at the bottom of the positioning groove 512, and the bottom of the positioning groove 512 is communicated with an opening hole in the pin 210 to accommodate a wire harness for connecting the lens and the vehicle body.

The support shield 520 is a thin-walled housing structure having a shape curved inward according to the shape of the vehicle body and a cylindrical collar 521 protruding on the outer surface, the support shield 520 being covered on the outer side of the support 510, and the inner hole of the collar 521 being fitted around the connection post 511 of the support 510, the connection post 511 of the support 510 being positioned by the collar 521 restraining the support shield 520. The support shield 520 not only shields the support 510 to make the joint of the temple and the lens more beautiful, but also shields the joint of the support 510 and the vehicle body to prevent wind and rain from entering the vehicle body.

Continuing to refer to fig. 3, attached above the support 510 is a folding mechanism 200.

The folding mechanism 200 includes a pin 210 and a folding motor 220, and connected to the support 510 is the pin 210 of the folding mechanism 200.

As shown in fig. 4, the pin 210 is a long shaft-shaped part, and includes a head 211 and a rod 212, where the head 211 is stepped, thicker, and the rod 212 is thinner. Optionally, a through hole is provided in the pin 210 for placement of the rearview mirror harness.

As shown in fig. 3, a shaft hole 222 is formed in the middle of a folding disk member 221 of the folding motor 220, a shaft portion 212 of the receiving pin 210 is penetrated, and a rotating portion 223 is formed at the other side of the folding motor 220 and connected to the base plate 100.

Referring to fig. 3 and 10, the pin 210 is vertically disposed, the top end of the head 211 is located in the locating groove 512 of the support 510 and is fixed to the support 510, the rod 212 of the fixed pin 210 passes through the shaft hole 222 of the folding tray part 221 of the folding motor 220, and the trapezoidal teeth and the trapezoidal groove are disposed between the annular end surfaces of the pin 210 and the folding tray part 221, so that the pin 210 blocks the folding tray part 221 of the folding motor 220 from rotating, i.e., the folding tray part 221 is also fixed from rotating, and the rotating part 223 of the folding motor 220 rotates around the folding tray part 221 and the pin 210.

Specifically, referring to fig. 4 and 10, a plurality of trapezoidal teeth (forming spaced trapezoidal grooves) are uniformly distributed on the circumference of the annular surface 215 of the head 211 of the pin 210, the upper and lower bottoms of the trapezoid are circular arcs of the outer circumference of the rod 212 and the outer circumference of the head 211, respectively, and the side surfaces of the trapezoid are preferably inclined surfaces. A plurality of trapezoid grooves (a plurality of trapezoid teeth with intervals are formed at the same time) are uniformly formed on the circumference of the lower end face of the folding disc, and the trapezoid grooves and the trapezoid teeth are mutually clamped and matched to transmit power or resistance.

The trapezoidal teeth of the head 211 of the pin 210 are equal to the trapezoidal grooves on the folding motor 220, and the size and the depth are adapted.

As one example, the end surface of the head 211 of the pin 210 is provided with a threaded hole, the support 510 is provided with a hole, and a fastener is used for fixing the head 211 of the pin 210 on the support 510.

As shown in fig. 2, the folding mechanism 200 is installed in the base plate 100.

As shown in fig. 5, a cavity with a shape corresponding to the shape of the folding motor 220 is formed below the base plate 100, a partition plate 110 is arranged above the cavity on one side of the folding plate component 221 of the folding motor 220, and a hole is formed in the partition plate 110 corresponding to the shaft hole 222 of the folding motor 220 for the pin shaft 210 to pass through. Referring to fig. 10, the folding mechanism 200 is installed in a cavity below the base plate 100, the rotating portion 223 of the folding motor 220 is fixed on the base plate 100, the rod portion 212 of the pin shaft 210 passes through a hole of the partition plate 110 of the base plate 100 upwards, and the snap spring 219 is installed at the upper end of the rod portion 212 of the pin shaft 210 to limit the pin shaft 210 axially. After the installation, the folding motor 220 drives the rotation part 223 thereof to rotate the substrate 100 around the folding tray part 221 and the pin shaft 210.

Optionally, as shown in fig. 3 and 10, the end of the rod portion 212 of the pin shaft 210 is sequentially sleeved with a spring 217, a gasket 218 and a clamp spring 219, the spring 217 contacts with the upper surface of the partition plate 110 of the base plate 100, and the clamp spring 219 is located at the extreme end of the rod portion 212, so that when the base plate 100 rotates around the pin shaft 210, the elastic force of the spring 217 acts on the partition plate 110 of the base plate 100, has a certain pressure on the base plate 100, generates a damping effect, can slow down the rotation speed of the base plate 100, and increases the stability of the folding process.

As an example, screw holes and through holes are provided in the rotating part 223 of the folding motor 220 and the base plate 100, and the two are coupled using fasteners.

The folding angle of the lens, i.e., the extreme position of the folding action, is defined by a limit structure 230 provided between the pin 210 and the substrate 100. Referring to fig. 4,5 and 6, the side of the annular surface of the pin 210 protrudes with an L-shaped limiting block 214, the lower part of the substrate 100 is provided with a limiting ring 120, the limiting block 214 is located in a groove defined by the limiting ring 120, when the substrate 100 is folded and rotated, the limiting block 214 rotates in the forward and reverse directions until the two end walls of the limiting ring 120 respectively contact with the limiting block 214 of the fixed pin 210, and the limiting block 214 on the pin 210 prevents the substrate 100 from continuing to rotate, so that the limiting block 214 on the pin 210 limits the rotation range of the lens by limiting the substrate 100, namely, the folding angle of the lens is limited.

Returning to fig. 3, steering mechanism 300 is laterally attached to the left side of base plate 100,

The steering mechanism 300 includes an electric steering gear 310, a rim mounting plate 320, a rim 330, and a lens 340 arranged in this order, and adjacent parts are connected.

The electric power steering gear 310 is an actuator of the steering mechanism 300 for driving the lens 340 to steer up and down or left and right to change the angle of the lens 340.

Referring to fig. 7, the electric power steering gear 310 includes a steering motor 311 and a connection plate 312, the connection plate 312 is installed in the cover case 130 of the base plate 100 (see fig. 3) through holes at four corners using fasteners, and the connection plate 312 and the base plate 110 are fixed without steering with the lens 340 during steering of the lens 340.

The central shaft of the steering motor 311 extends into the central hole of the connecting plate 312, and the shaft end and the hole are in spherical surface fit, so that the steering motor 311 and the connecting plate 312 are in spherical surface rotatable connection.

Continuing to see fig. 7, the steering motor 311 extends out two pairs of clamping legs 313 towards one side of the connecting plate 312, each pair of clamping legs 313 is symmetrically arranged relative to the central axis of the steering motor 311, the connecting line of each pair of clamping legs 313 is an axis for steering the lens, and two axes formed by the two pairs of clamping legs 313 determine two rotation directions of the lens. The clamping pin 313 passes through four corresponding clamping holes 314 on the connecting plate 312, the clamping holes 314 limit the end parts of the clamping pin 313 from being pulled out in the reverse direction, and because the clamping pin 313 has a certain length, a certain rotation space is provided for the steering motor 311 instead of being completely fixed, the clamping pin 313 is connected with the clamping hole 314, so that the steering motor 311 drives the mirror ring mounting plate 320, the mirror ring 330, the mirror 340 and the mirror shell 350 to rotate in a certain angle relative to the connecting plate 312 in the direction limited by the clamping pin 313.

The position of the catch 313 on the steering motor 311 is set according to the required direction of rotation of the lens, and if the catch 313 is set at four angles as shown in fig. 7, the steering motor 311 drives the lens to rotate within a certain angle range in the up-down or left-right directions.

The steering motor 311 is preferably a stepper motor.

Continuing to refer to fig. 3, a mirror mount plate 320 is mounted on the steering motor 311 on the other side of the connection plate 312.

As can be seen from the rim mounting plate 320 of fig. 3 and 8, the rim mounting plate 320 is provided with a raised rim wall 322 along a rim toward one side of the rim 330, and the rim wall 322 and the bottom plate are slotted at some positions to avoid the raised structure of the rim 330.

In fig. 8, four round platforms 321 are protruded on the mirror ring mounting plate 320, threaded holes are formed in the round platforms 321, and the round platforms 321 are inserted into four counter bores 315 on the steering motor 311 in fig. 7 and are connected by fasteners. Other removable attachment means may be used.

Continuing with FIG. 3, to the left of the rim mounting plate 320 is a rim 330, the outer contour of the rim 330 is similar to the rim mounting plate 320, but is one turn larger in size. The surface of the mirror rim 330 on which the lens 340 is mounted is a mirror rim front surface 331 and the other surface is a mirror rim back surface 332.

Referring to fig. 8, the rim back surface 332 is provided with a thin side wall enclosure 333 protruding outwards, the outline of the enclosure 333 is similar to the outline of the rim 330, but a wide edge is retracted into the rim of the rim 330, the enclosure 333 is distributed in whole or intermittent manner, the side wall 322 of the rim mounting plate 320 is embedded into the enclosure 333 of the rim 330, and the rim mounting plate 320 is hidden in the mirror housing 350.

Along setting up a plurality of bellied buckles 334 in the enclosure 333, buckle 334 stretches into in the buckle hole 324 of mirror circle mounting panel 320 and blocks, reverse can not deviate from by oneself, with mirror circle 330 joint on mirror circle mounting panel 320.

Other removable connections between the bezel 330 and the bezel mounting plate 320 may also be used, such as fasteners.

Referring to fig. 3 again, the front surface 331 of the rim is a shell structure, a shell wall 335 for accommodating the lens 340 is enclosed around, the lens 340 is adhered to the bottom surface of the shell wall 335, the side edge of the shell wall 335 is coated on the outer side of the lens 340, and the side edge of the shell wall 335 is thin, so that a frame-free structure of the lens 340 is formed.

Optionally, the outer surface of the side edge of the housing wall 335 is rounded for aesthetic purposes.

Referring to fig. 3, the lens 340 is adhered to the bottom surface of the wall 335 of the rim front 331, and a heating plate 360 may be disposed between the lens 340 and the rim 330, and the heating plate 360 and the lens 340 are sequentially adhered to the rim 330. The adhesive can be glass cement or double-sided adhesive.

The outer contours of the lens 340, the rim 330, and the rim mounting plate 320 are similar in shape and different in size.

To protect the above mechanisms, and to take into account the aesthetics of the exterior rear view mirror, the exterior rear view mirror is provided with a mirror housing 350 at the outermost portion.

Referring to fig. 3, the mirror housing 350 has a smooth outer curve, the mirror housing 350 is divided into an upper portion and a lower portion, the lower portion is a sub-mirror housing 351, the upper portion is a decorative cover 352, and the decorative cover 352 and the sub-mirror housing 351 enclose an inner cavity 353.

Referring to fig. 3, referring to fig. 2, the sub-mirror housing 351 is fixed to the mirror mount plate 320, and in particular, a protruding mount portion 354 inside the sub-mirror housing 351 is connected to the mirror mount plate 320 toward the motor side by a fastener. The lower end surface and the front end surface of the decorative cover 352 are fastened to the sub-mirror casing 351 and the mirror rim 330, respectively. At this time, the enclosure 333 of the back surface 332 of the mirror ring is just embedded into the opening of the inner cavity 353, the end surface of the opening of the inner cavity 353 is pressed against the back surface 332 of the mirror ring, the outermost side line of the mirror shell 350 coincides with the outer side line of the mirror ring 330, and the outer curve of the mirror shell 350 is smoothly connected with the circular arc of the outer surface of the wall 335 of the mirror ring 330. And the mounting structure of the lens forms the attractive appearance of the rimless outer rearview mirror. With this structure, the space occupied by the outer eave-type mirror housing of the conventional lens is omitted, so that the area of the lens 340 can be increased, or the space occupied by the outer rearview mirror can be reduced, and the front view range can be enlarged.

The mirror housing 350 accommodates the mirror mount plate 320, the electric power steering gear 310, the base plate 100, and the folding mechanism 200.

Typically, as shown in fig. 3, a turn signal 370 is also sandwiched between the secondary mirror housing 351 and the trim cover 352.

The angle of rotation of the steering mechanism 300 is preferably 8-10 degrees. The above-described angle range can be satisfied by controlling the rotation angle of the steering motor 311.

In the steering mechanism 300, the steering motor 311 drives the mirror ring mounting plate 320 to drive the mirror ring 330 and the lens 340 to rotate up and down and left and right, and the mirror housing 350 is connected with the mirror ring mounting plate 320 and the mirror ring 330, so that the mirror housing 350 rotates together with the lens 340. In contrast to the conventional exterior mirror, the mirror housing 350 is fixed, and the lens 340 rotates relative to the mirror housing 350, so as to better meet the lens steering requirement of the rimless exterior mirror. In addition, the side wall 322 of the mirror ring mounting plate 320 is clamped into the enclosure 333 of the mirror ring 330, the enclosure 333 of the mirror ring 330 is embedded into the opening of the inner cavity 353 of the enclosure of the mirror shell 350, the parts are tightly connected, the tightness is good, and the attractive external rearview mirror without a frame is formed.

In summary, the head 211 of the pin 210 of the folding mechanism 200 is fixed to the support 510, the rod 212 of the pin 210 is rotatably connected with the folding motor 220 and the base plate 100, the folding motor 220 is connected with the base plate 100 and rotates around the pin 210, and the steering mechanism 300 is mounted on the base plate 100 in the lateral direction, so that the folding motor 220 drives the base plate 100 and drives the steering mechanism 300 to rotate around the pin 210 together, thereby realizing the folding action of the exterior rearview mirror. The steering of the lens 340 of the exterior mirror is accomplished by the steering mechanism 300 described above.

As can be seen from the above description of the structure of the rimless exterior mirror, the mirror housing 350 moves with it when the mirror is folded and turned, so the sealing structure 400 at the mirror housing 350 and the stand assembly 500 is of great importance.

As shown in fig. 2 and 9, specifically, the sealing structure 400 of the rimless exterior rear view mirror is disposed between the avoidance hole 355 (see fig. 9 and 10) of the sub-mirror case 351 and the pin 210.

As shown in fig. 9 and 10, the sealing structure 400 includes a seal ring 410, a seal flange 420, and a press sleeve 430.

The seal ring 410 is a short shaft sleeve with flange edges, a stepped through hole is formed in the seal ring 410, a small diameter hole of the stepped through hole is sleeved on the pin shaft 210 and is in clearance fit with the neck 213 of the pin shaft 210, a large diameter inner hole of the stepped through hole is sleeved outside a ferrule 521 of the support shield 520, the bottom surface of the large diameter inner hole is contacted with the upper end surface of the ferrule 521 upwards on the central shaft of the seal ring 410, the upper end surface of the seal ring 410 is contacted with the shaft shoulder of the pin shaft 210, and the seal ring 410 is limited between the pin shaft 210 and the support shield 520. Thus, the stepped through-hole of the sealing ring 410 forms a labyrinth seal with the gap between the holder shield 520 and the pin 210.

The sealing flange 420 is made of soft materials and is of a special-shaped structure, the lip 421 of the sealing flange 420 is sleeved and fixed outside the sealing ring 410, the flat pad 422 of the sealing flange 420 is flatly paved on the inner surface of the mirror shell 350 and is fixed in the auxiliary mirror shell 351 through the pressing sleeve 430, the corrugated part 423 connecting the lip 421 and the flat pad 422 is a wavy connecting body formed by repeatedly folding the soft materials, the corrugated part 423 can be freely folded, a larger expansion and contraction amount is achieved, an elastic connection effect is achieved, and the sealing flange 420 enables the sealing structure to form elastic connection between the auxiliary mirror shell 351 and the pin shaft 210.

As an embodiment, the sealing ring 410 is preferably made of engineering plastic, the sealing flange 420 is made of rubber, and the sealing ring 410 and the sealing flange 420 are connected into a whole through secondary injection molding.

As another example, the sealing ring 410 and the sealing flange 420 may be connected using a tie.

As shown in fig. 9 and 10, the sealing flange 420 is fixed in the following manner: the fixing parts 440 are respectively arranged at the corresponding positions of the pressing sleeve 430, the sealing flange 420 and the mirror shell 350, the fixing parts 440 are small cylinders with protrusions, the small cylinders of the pressing sleeve 430 and the sealing flange 420 are hollow, threaded holes are formed in the small cylinders of the mirror shell 350, and after the pressing sleeve 430, the sealing flange 420 and the fixing parts 440 of the mirror shell 350 are sleeved from top to bottom, the pressing sleeve 430 and the sealing flange 420 are fixed on the auxiliary mirror shell 351 by fasteners.

Further, the shape of the flat pad 422 of the sealing flange 420 and the shape of the pressing sleeve 430 are changed along with the shape of the inner surface of the sub-mirror casing 351, so that the sealing effect is better ensured by the tight contact between the three.

The material of the pressing sleeve 430 is preferably engineering plastic.

In the above sealing structure 400, when the lens portion of the frameless outer rearview mirror is folded around the pin 210, because the sealing ring 410 is in clearance fit with the pin 210, the sealing structure 400 is folded and rotated together with the mirror housing 350, and the labyrinth seal formed between the sealing ring 410 and the pin 210 and the sealing flange 420 are not affected during the rotation of the lens assembly; when the rimless exterior rear view mirror steering mechanism 300 drives the lens 340 to turn up and down, the mirror housing 350 turns up or down, the sealing flange 420 is pulled apart at one side of the fold portion 423 and pressed at the other side along with the action of the mirror housing 350, and when the mirror housing 350 returns to the initial position, the sealing flange 420 returns to the initial state; when the steering mechanism 300 drives the lens 340 to turn left and right, the mirror housing 350 turns left and right, the sealing flange 420 is pulled to twist, and when the mirror housing 350 returns to the initial position, the sealing flange 420 returns to the initial state. In the dynamic process, the sealing flange 420 can elastically change along with the movement of the lens, so that the expansion and contraction amount is large, the advantage of elastic connection of the sealing flange 420 is fully reflected, namely, the sealing structure 400 always has a good sealing effect as that when the sealing structure is stationary.

As can be seen from the above-mentioned structure and connection of the rimless exterior mirror, the steering motor 311, the rim mounting plate 320, the rim 330, the lens 340 and the mirror housing 350 of the steering mechanism 300 are integrally fixed to be rotatable relative to the base plate 100, but are not completely fixed, so that when the vehicle runs on a bumpy road, these components may shake as the vehicle rolls up and down, and mainly represent vibration in a vertical direction, and in order to reduce the influence of such vibration on the driver, the vibration reduction device 600 is provided in the present invention.

As shown in fig. 11, the vibration damping device 600 is provided between the base plate 100 and the rim mounting plate 320 of the steering mechanism 300, and reduces vibration of the outer mirror in such a manner that a space formed by upper and lower inner walls of the provided groove restricts displacement of the convex structure accommodated in the space.

Specifically, as shown in fig. 11, a protruding shaft portion 325 is disposed on a side of a rim mounting plate 320 of a steering mechanism 300 facing a substrate 100, the shaft portion 325 is in a cavity structure of a shape of a top-free pointed house, an opening of the cavity faces the substrate 100, two cavity walls support and mount a circular shaft, the circular shaft does not rotate, meanwhile, an elongated limiting plate 140 extending to the shaft portion 325 is disposed on the substrate 100, the surface of the limiting plate 140 is perpendicular to the axis of the circular shaft, a groove is formed in the middle of the limiting plate 140 to form two elongated teeth, the elongated teeth are inserted into the cavity of the shaft portion 325, the circular shaft transversely passes through the groove, and the upper side and the lower side of the groove limit the vertical displacement of the circular shaft. The limiting plate 140 on the base plate 100 reduces vibration of the lens by limiting displacement of the rim mounting plate 320.

The vibration damping device 600 can reduce the vibration of the lens of the frameless external rearview mirror on a bumpy road section, improve the safety of the driving process, and avoid possible damage to various parts and connection parts of the external rearview mirror due to severe vibration, which is important for the frameless external rearview mirror.

In summary, the borderless rearview mirror of the invention has the following advantages:

1. The mirror housing 350 has a smooth outer curve, an inner cavity 353 is formed in the mirror housing 350, the mirror back 332 is embedded into the opening of the inner cavity 353, the end face of the opening of the inner cavity 353 is pressed against the mirror back 332, the outermost side line of the mirror housing 350 coincides with the outer line of the mirror 330, the outer curve of the mirror housing 350 is in smooth connection with the circular arc of the outer surface of the wall 335 of the mirror housing 330, the mirror housing 350 accommodates the mirror housing mounting plate 320, the electric steering gear 310, the substrate 100 and the folding mechanism 200, and the lens 340 is adhered to the bottom surface of the thin-walled wall 335 of the mirror front 331. The above structure combination forms the appearance of the rimless outer rearview mirror. Under this kind of structure, saved the outside eaves formula mirror shell of traditional lens and taken up space, alright increase the area of lens 340, perhaps reduce the camera lens size, enlarge the place ahead field of vision scope, make the driver have wider field of vision, the driver has better driving experience, more importantly has improved driving safety.

2. The vibration damper 600 between the base plate 100 and the rim mounting plate 320 can weaken the vibration of the lens of the frameless outer rearview mirror on a bumpy road section, enhance the stability of the outer rearview mirror, ensure that the outer rearview mirror can still work normally when a vehicle jolts, improve the safety of a driving process, avoid possible damage to various parts and connection parts of the outer rearview mirror due to severe vibration, and prolong the service life of the outer rearview mirror.

3. When the pin shaft 210 is connected with the base plate 100, the end part of the rod part 212 of the pin shaft 210 is sequentially sleeved with the spring 217, the gasket 218 and the clamp spring 219, the spring 217 is in contact with the base plate 100, and when the base plate 100 rotates around the pin shaft 210, the elastic force of the spring 217 acts on the partition plate 110 of the base plate 100, so that a certain damping effect is provided for the base plate 100, the rotation speed of the base plate 100 can be slowed down, and the stability of the folding process is improved.

4. The electric steering gear 310 of the steering mechanism 300 of the present invention drives the whole lens to rotate, unlike the conventional exterior rear view mirror which only rotates the lens, the new steering mechanism can adapt to the requirements of the rimless exterior rear view mirror.

5. Because the lens of the rimless exterior rearview mirror is turned and folded, the mirror shell 350 moves along with the turning, compared with the exterior rearview mirror in the prior art, the mirror shell 350 does not turn along with the lens 340, and the sealing structure 400 arranged at the avoiding hole 355 of the mirror shell 350 has the advantages that the sealing flange 420 can elastically change along with the movement of the lens, the larger expansion and contraction amount is realized, the advantage of the elastic connection of the sealing flange 420 is fully reflected, the sealing structure 400 always has a good sealing effect as the static state, rainwater, wind and dust can not enter the lens effectively, and the rimless exterior rearview mirror is very suitable for the rimless exterior rearview mirror.

6. The external circular arcs of the rimless external rearview mirror are smoothly connected, and the rimless external rearview mirror has more attractive and fashionable appearance.

The above embodiments are only for illustrating the present invention, and are not limiting of the present invention. While the invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, and equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and it is intended to cover the scope of the claims of the present invention.

Claims (10)

1. The rimless exterior rearview mirror comprises a lens and a mirror foot, wherein the mirror foot is connected to the exterior of a vehicle body, and the lens is connected with the mirror foot;

the lens shell (350) covers the outermost part of the lens, the lens legs penetrate through avoidance holes (355) below the lens shell (350) to be connected with the folding mechanism (200), and the sealing structure (400) is arranged at the avoidance holes (355) of the lens shell (350);

The steering mechanism (300) sequentially comprises an electric steering gear (310), a mirror ring mounting plate (320), a mirror ring (330) and a lens (340), wherein adjacent parts are connected, a connecting plate (312) of the electric steering gear (310) is mounted on the base plate (100), a steering motor (311) of the electric steering gear (310) is rotatably connected with the connecting plate (312), a clamping foot (313) of the steering motor (311) penetrates through a corresponding clamping hole (314) in the connecting plate (312) to be clamped, and the steering motor (311) drives the mirror ring mounting plate (320), the mirror ring (330), the lens (340) and the mirror shell (350) to rotate together relative to the fixed connecting plate (312) in a certain angle in the direction defined by the clamping foot (313);

the mirror shell (350) is provided with an inner cavity (353), the mirror back surface (332) is embedded into the opening of the inner cavity (353), the end surface of the opening of the inner cavity (353) is tightly pressed on the mirror back surface (332), the outer curve of the mirror shell (350) is smoothly connected with the circular arc of the outer surface of the mirror ring (330), the lens (340) is arranged on the bottom surface of the thin-wall shell wall (335) of the mirror ring front surface (331) to form a borderless outer rearview mirror structure, and the mirror shell (350) accommodates the mirror ring mounting plate (320), the electric steering gear (310), the substrate (100) and the folding mechanism (200);

the folding mechanism (200) comprises a pin shaft (210) and a folding motor (220), wherein the pin shaft (210) is a long shaft

The shape part comprises a head part (211) and a rod part (212), wherein the head part (211) is fixedly arranged on the mirror foot, the rod part (212) of the pin roll (210) is rotatably connected with the folding motor (220), the folding motor (220) can rotate around the fixed pin roll (210), the folding mechanism (200) is arranged in a cavity of the base plate (100), the folding motor (220) is fixedly connected with the base plate (100), an opening hole is formed above the cavity for the pin roll (210) to pass through the rod part (212),

The hinge pin (210) is axially fixed, and the folding motor (220) drives the base plate (100) so as to drive the steering mechanism (300) on the base plate (100) and the mirror shell (350) to rotate together around the hinge pin (210) to realize the folding action of the outer rearview mirror;

The sealing structure (400) is arranged between the mirror shell (350) and the pin shaft (210) and is elastically sealed, and when the lens turns or is folded, the sealing structure (400) can stretch along with the lens.

2. The rimless exterior mirror according to claim 1, further comprising a vibration damping device (600), the vibration damping device (600) being disposed between the base plate (100) and the rim mounting plate (320) of the steering mechanism (300) to reduce vibration of the exterior mirror in such a manner that a space formed by upper and lower inner walls of the groove restricts displacement of the convex structure accommodated in the space.

3. The rimless exterior mirror according to claim 2, wherein the rim mounting plate (320) is provided with a protruding rotating shaft portion (325) toward one side of the base plate (100), the rotating shaft portion (325) is in a cavity structure, a cavity opening is toward the base plate (100), two cavity walls support and mount a circular shaft, the circular shaft does not rotate, an elongated limiting plate (140) extending toward the rotating shaft portion (325) is provided on the base plate (100), the surface of the limiting plate (140) is perpendicular to the axis of the circular shaft, an opening slot is formed in the middle of the limiting plate (140), the elongated teeth are inserted into the cavity of the rotating shaft portion (325), and the circular shaft transversely passes through the through slot, and the upper side and the lower side of the through slot limit the vertical displacement of the circular shaft.

4. The rimless exterior mirror according to claim 1, wherein a limit structure (230) is disposed between the pin shaft (210) of the folding mechanism (200) and the base plate (100), a limit block (214) is formed by protruding an L-shaped side edge at an annular surface (215) of the pin shaft (210), a limit ring (120) is disposed at a lower portion of the base plate (100), the limit block (214) is disposed in a groove defined by the limit ring (120), and when the base plate (100) rotates in a forward and reverse direction until two ends of the limit ring (120) respectively contact the limit block (214) of the fixed pin shaft (210), the limit block (214) prevents the base plate (100) from continuing to rotate.

5. The rimless exterior mirror according to claim 1, wherein when the shaft portion (212) of the pin shaft (210) is axially fixed to the base plate (100), a spring (217), a spacer (218) and a snap spring (219) are sequentially sleeved at an end portion of the shaft portion (212) of the pin shaft (210), the spring (217) is in surface contact with the base plate (100), the snap spring (219) is located at an extreme end of the shaft portion (212), and when the base plate (100) rotates around the pin shaft (210), an elastic force of the spring (217) acts on the base plate (100).

6. The rimless exterior mirror according to claim 1, wherein in the folding mechanism (200), the rotatable connection structure between the rod portion (212) and the folding motor (220) of the pin shaft (210) is that a plurality of trapezoid teeth are uniformly distributed on the circumference of the annular surface (215) of the head portion (211) of the pin shaft (210), the side surfaces of the trapezoid teeth are inclined surfaces, a plurality of trapezoid grooves are uniformly formed on the circumference of the lower end surface of the folding disc member (221) of the folding motor (220), the trapezoid teeth are clamped into the trapezoid grooves and transmit resistance, the pin shaft (210) blocks the folding disc member (221) from rotating, and the rotating portion (223) of the folding motor (220) drives the substrate (100) to rotate around the folding disc member (221) and the pin shaft (210).

7. The rimless exterior mirror according to claim 1, wherein in the steering mechanism (300), the central shaft of the steering motor (311) and the central hole of the connecting plate (312) are in spherical fit, the steering motor (311) extends out of two pairs of clamping legs (313) towards one side of the connecting plate (312), each pair of clamping legs (313) is symmetrically arranged relative to the central shaft of the steering motor (311), the connecting line of each pair of clamping legs (313) is an axis for steering the lens, two axes formed by the two pairs of clamping legs (313) determine two rotation directions of the lens, the clamping legs (313) penetrate through the corresponding four clamping holes (314) on the connecting plate (312), the ends of the clamping legs (313) are limited to be reversely separated, and the clamping legs (313) have a certain length to provide a certain rotation space for the steering motor (311).

8. The rimless exterior mirror according to claim 1, wherein the mirror housing (350) is divided into an upper portion and a lower portion, the lower portion is a sub-mirror housing (351), the upper portion is a decorative cover (352), the sub-mirror housing (351) is fixed on the mirror rim mounting plate (320), the lower end face and the front end face of the decorative cover (352) are fastened on the sub-mirror housing (351) and the mirror rim (330), respectively, and the decorative cover (352) and the sub-mirror housing (351) enclose the inner cavity (353).

9. The rimless exterior mirror according to claim 1, wherein the sealing structure (400) comprises a sealing ring (410), a sealing flange (420) and a pressing sleeve (430), the sealing ring (410) is of a sleeve-shaped structure, is sleeved on the pin shaft (210), is in contact with the mirror foot below, a labyrinth seal is formed between an inner hole of the sealing ring (410) and the pin shaft (210) and the mirror foot, the flange (420) is made of soft materials, a lip (421) of the flange (420) is fixed on the sealing ring (410), a flat pad portion (422) of the flange (420) is fixed on the mirror housing (350) through the pressing sleeve (430), a corrugated portion (423) connecting the lip (421) and the flat pad portion (422) is a wavy connecting body formed by repeatedly folding, and has a large expansion amount, and the flange (420) enables the sealing structure (400) to form elastic connection between the mirror housing (350) and the pin shaft (210).

10. The rimless exterior mirror according to claim 1, wherein the mirror foot is a support assembly (500), the support assembly (500) comprises a support (510) and a support shield (520), the support (510) is connected with the vehicle body, a convex cylindrical connecting column (511) is arranged on one surface of the support (510) towards the outer side of the vehicle body, a concentric circular positioning groove (512) is arranged in the connecting column (511), the head (211) of the pin roll (210) is accommodated in the positioning groove (512) and fixed at the bottom of the positioning groove (512), the bottom of the positioning groove (512) and an opening hole in the pin roll (210) are communicated to accommodate a wire harness for connecting the lens and the vehicle body, the support shield (520) covers the outer side of the support (510), and the support shield (520) is positioned by the support (510).