CN111775891B

CN111775891B - Automobile rearview mirror equipment

Info

Publication number: CN111775891B
Application number: CN202010691399.8A
Authority: CN
Inventors: 李永建
Original assignee: Hangzhou Fuyang Xinyuan New Energy Co Ltd
Current assignee: Hangzhou Fuyang Hongxiang Technology Services Co ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2021-08-27
Anticipated expiration: 2039-05-27
Also published as: CN110154900B; CN111775892B; CN110154900A; CN111775891A; CN111775892A

Abstract

The invention belongs to the technical field of automobile accessories, and particularly relates to automobile rearview mirror equipment which comprises a power mechanism and a brush mechanism, wherein the power mechanism and the brush mechanism are arranged in a mirror shell, after an electric drive module is started, a wind cup can completely come out of a conical shell and can absorb wind energy from the outside, the power mechanism converts the outside wind energy into energy of reciprocating action of the brush mechanism, and the brush mechanism can clean rain and fog on a lens. In addition, when the automobile is in a rainy day and the automobile is to be started, the brush mechanism can clean the lenses to a certain extent, so that a driver can still observe the surrounding state of the automobile when the automobile is started, and the automobile can be safely started in the rainy day.

Description

Automobile rearview mirror equipment

Technical Field

The invention belongs to the technical field of automobile accessories, and particularly relates to automobile rearview mirror equipment.

Background

When the automobile runs in rainy days, the rearview mirrors are drenched by rainwater to be fuzzy, so that the sight of a driver is influenced, and the water mist problem of the rearview mirrors always troubles the driver. In order to remove the water mist, the treatment is mainly carried out by electrically heating and adding a rain eyebrow of the rearview mirror at present. The electric heating has the disadvantages of slow effect and difficult effect on slightly large rainwater; the rain eyebrows can shield a part of rainwater, but do not have the function of rainwater attached to the mirror surface. In view of the above problems, it is desirable to design a rearview mirror for removing rain and fog.

The present invention is directed to an automobile rearview mirror apparatus that solves the above problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses an automobile rearview mirror device which is realized by adopting the following technical scheme.

An automobile rearview mirror apparatus characterized in that: the mirror comprises a mirror shell provided with a lens, a power mechanism and a brush mechanism, wherein the power mechanism and the brush mechanism are arranged in the mirror shell; the inner top surface of the mirror shell is provided with an upper chute, and the inner bottom surface of the mirror shell is provided with a lower chute; an upper guide bar is arranged in the upper sliding chute, and a lower guide bar is arranged in the lower sliding chute; the power mechanism is connected with the brush mechanism, and the brush mechanism is matched with the lens.

The power mechanism comprises a rotary arm, a rotary wheel, a volute spiral spring, a rotary shaft, a bevel gear combination, a telescopic shaft, a pull ring, a snap ring, a wind cup, a rotary ring, a toothed plate, an electric drive module, a gear, an A telescopic plate, an A plate spring, a B plate spring, a limiting plate, a swinging plate, an L strip and a conical shell, wherein the conical shell is arranged in a conical hole formed in the bottom of the mirror shell; one end of the L-shaped plate is fixedly arranged on the inner bottom surface of the mirror shell, and the other end of the L-shaped plate is provided with a rotating shaft; the rotating wheel with a circular groove on the side surface is arranged at one end of the rotating shaft through a bearing; one end of the volute spiral spring positioned in the circular groove is fixedly connected with the rotating shaft, and the other end of the volute spiral spring is fixedly connected with the inner groove surface of the circular groove; one end of the rotary arm is fixedly arranged on the rotating wheel, and the other end of the rotary arm is provided with a pin; the outer plate of the A expansion plate is fixedly arranged on the side surface of the L plate, and the exposed end of the inner plate of the A expansion plate is provided with an inclined surface and matched with the square groove on the outer circular surface of the rotating wheel; one end of a spring A in the expansion plate A is connected with the inner wall of the outer plate of the expansion plate A, and the other end of the spring A is connected with one end of the inner plate of the expansion plate A, which is not provided with an inclined plane; the L strips slide in the sliding holes of the horizontal section of the L plate, one end of each L strip is provided with a triangular end, and the other end of each L strip is fixedly connected with the side face of the inner plate of the expansion plate A; one end of the L-shaped second plate is arranged on the L-shaped first plate, and the other end of the L-shaped second plate is provided with an outer shaft of a rotary telescopic shaft; the outer shaft of the telescopic shaft is in transmission connection with the rotating shaft through a bevel gear combination; a pull ring and a swivel are fixedly arranged on an inner shaft of the telescopic shaft, and the swivel is positioned at the lower end of the inner shaft of the telescopic shaft; one end of each of the three swing strips is hinged in three hinge grooves uniformly formed in the circumferential direction of the bottom surface of the rotating ring, and the other end of each of the three swing strips is provided with a wind cup; the three wind cups are respectively matched with three baffles which are uniformly distributed on the inner wall of the conical shell in the circumferential direction; each swing strip is provided with a plate spring A for swinging and resetting; the electric drive module is arranged on the L plate, and a gear is arranged on an output shaft of the electric drive module; a toothed plate meshed with the gear vertically slides in the mirror shell; the snap ring is arranged on the surface of the toothed plate far away from the gear by a connecting plate; the pull ring rotates in the ring groove of the snap ring; a limit plate positioned above the swing plate is fixedly arranged on the toothed plate, and the limit plate is matched with the swing plate; the swing plate is provided with a plate spring B for resetting; the swing plate is matched with the triangular end.

The brush mechanism comprises a straight rail, a B expansion plate, an expansion link, an arc strip and a brush piece, wherein the lower end of the straight rail, which is provided with the B expansion plate on the side surface of the top part, slides in the lower chute, and the expansion end, which is higher than the straight rail, of the B expansion plate slides in the upper chute; the lower end of the straight rail and the telescopic end of the B telescopic plate are both provided with a telescopic rod; a spring B is arranged in each telescopic rod, one end of the spring B is connected with the inner bottom of the outer rod in the telescopic rod, and the other end of the spring B is connected with the end face of the inner rod in the telescopic rod; two ends of the arc strip are respectively hinged with the telescopic ends of the two telescopic rods; the arc strip is provided with a brush piece; the lens positioned between the arc strip and the straight rail is matched with the brush piece; the telescopic rod on the straight rail slides in the lower chute and is positioned below the lower guide strip; the telescopic rod on the B telescopic plate slides in the upper chute and is positioned on the upper guide strip; the pin slides in the straight track.

Preferably, the inner wall of the outer plate of the expansion plate A is provided with two guide grooves in an up-down symmetrical manner, the inner plate of the expansion plate A is provided with two guide blocks in an up-down symmetrical manner, and the two guide blocks slide in the two guide grooves respectively; the spring A is always in a compressed state; the L strips are connected with one end of the A expansion plate and close to one end of the A expansion plate inner plate with an inclined plane, and the L strips are guaranteed to move the A expansion plate inner plate to a direction away from the runner to have enough distance. The guide block and the guide groove are designed to prevent the inner plate in the A expansion plate from being separated, and the initial state of the A spring can be ensured to be in a pre-pressing state.

Preferably, the side face of the baffle is provided with the soft cushion, so that the wind cup rotating at a high speed is guaranteed to enter the conical shell and collide with the soft cushion at first, and the effects of buffering and protecting the wind cup are achieved; one end of the plate spring A is fixedly connected with the rotating ring, and the other end of the plate spring A is fixedly connected with the corresponding swing strip; one end of the plate spring B is connected with the swinging plate, the other end of the plate spring B is connected with the limiting plate, and the plate spring B is located on the upper side of the swinging plate.

Preferably, the bevel gear combination is composed of two engaged bevel gears with rotation axes forming an included angle of 90 degrees with each other, wherein the size of the bevel gear on the telescopic shaft is smaller than that of the bevel gear on the rotating shaft. Guarantee that telescopic shaft speed is higher than the pivot rotational speed, brush mechanism operation cycle can not be too fast, guarantees that the brush piece can clear up rain and fog on the lens.

Preferably, one end of the support is fixedly connected with the horizontal section of the L plate, and the other end of the support is provided with an elastic raised head; the lower part of the support is provided with a ladder rail; the side surface of the top of the toothed plate is provided with a clamping groove matched with the raised head; the ladder blocks mounted on the toothed plates slide in the ladder rails. The convex head is matched with the clamping groove: in an initial state, the raised head is positioned in the clamping groove so as to limit the toothed plate and a structure arranged on the toothed plate to freely slide under the action of gravity; when the gear drives the toothed plate to move downwards, the toothed plate easily breaks through the limitation of the raised head on the toothed plate; when the toothed plate is reset upwards, the raised head can enter the clamping groove again. The design of ladder piece and ladder rail guarantees that the pinion rack can steady vertical slip and do not break away from in the ladder rail.

The wind cups are parabolic cone hollow cups, concave surfaces of the three wind cups are all in the same direction, and the wind cups are guaranteed to rotate in a single direction when being blown by wind. The inner bottom surface of the mirror shell is a plane, the appearance of the upper part of the mirror shell adopts the existing streamline design, and the elastic raised head is a rubber raised head; the arc strip and the brush piece are made of elastic materials. The design of the hinge groove is that when the swing strip is in a horizontal state, the top surface of the hinge groove limits the swing strip to continuously swing upwards, and the wind cup is ensured to more powerfully drive the rotary ring to rotate through the swing strip. The electric drive module is composed of main components such as a direct current motor, a speed reducer, a control unit and the like, and adopts the prior art. The arc strip is bent towards the direction far away from the convex part; the B spring is in tensile state all the time in the telescopic link, and the articulated design of arc strip and telescopic link lies in, and the self of telescopic link is flexible can guarantee that the brush piece contacts with the lens all the time according to lens angle modulation.

A plurality of through water leakage holes are formed in the bottom surface of the lower chute, and once rainwater flows into the lower chute carelessly, the rainwater can flow out of the water leakage holes to prevent the rainwater from accumulating in the mirror shell.

The lens angle adjustment is controlled by an angle module in the prior art; the angle module is arranged in the mirror shell and is positioned between the lens and the straight rail without influencing the sliding of the straight rail.

In the production process of the invention, in order to ensure that the brush piece can have enough brushing force on the lens to clean rain and fog, the telescopic shaft and the rotating shaft can be additionally provided with a speed-reducing torque booster so as to meet the requirement of cleaning the rain and fog.

Compared with the traditional rain and fog removing technology of the rearview mirror, the invention has the advantages that through the design of the electric driving module, the power mechanism and the brush mechanism, the wind cup can completely come out of the conical shell and can absorb wind energy from the outside when the electric driving module is started, further, the power mechanism converts the external wind energy into the reciprocating energy of the brush mechanism, and the brush mechanism can clean the rain and fog on the mirror. When being in rainy day and the car will start, the electrically drive module starts the back, and the initial state is in the volute spiral spring of compression state can make the brush mechanism carry out the clearance lens of certain range, and the driver can effectively observe the rear-view mirror when the car starts, guarantees that the car can start safely in rainy day. The energy of the brush mechanism for continuously cleaning the lens comes from wind energy rather than electric energy of the electric drive module, so that the aim of saving energy is fulfilled. The design of elasticity arc and elasticity brush piece is in order to adapt to present streamlined mirror shell and lens, and the rain and fog of the narrow department of lens is cleared up as far as possible through the bending of arc for the rain and fog is not remained to the vast majority area of lens, guarantees that the driver well observes the rear-view mirror.

Drawings

Fig. 1 is an overall and sectional view of a rear view mirror.

Fig. 2 is a sectional view of the lens mounting position from two perspectives.

Fig. 3 is a power mechanism and brush mechanism diagram.

Fig. 4 is a view of a mirror housing.

Fig. 5 is a cross-sectional view of the sliding installation of the telescopic rod.

FIG. 6 is a view of the installation of the arc strips, the fitting of the brush piece to the lens, and the telescoping of the rod.

FIG. 7 is a sectional view of the bevel gear assembly, the cup mounting portion and the A expansion plate.

FIG. 8 is a cone shell structure and cross-sectional view.

Fig. 9 is an installation view of the boss and L-bar.

FIG. 10 is a view of the wrap spring mounting and the wobble plate in engagement with the triangular end.

Fig. 11 is a cross-sectional view of the projection engaging the catch.

Number designation in the figures: 1. a mirror housing; 2. a convex portion; 3. a lens; 4. an angle module; 6. a lower chute; 7. a lower conducting bar; 8. an upper chute; 9. an upper conducting bar; 10. a power mechanism; 12. a brush mechanism; 14. l is a plate; 15. a conical shell; 16. a swing arm; 17. a pin; 18. a rotating wheel; 19. a volute spiral spring; 20. a rotating shaft; 21. combining the bevel teeth; 22. l two plates; 23. a snap ring; 24. a toothed plate; 25. rotating the ring; 26. a wind cup; 27. a gear; 28. an electric drive module; 29. l strips; 30. a, a telescopic plate; 31. a baffle plate; 32. a soft cushion; 33. a telescopic shaft; 34. a pull ring; 35. connecting plates; 36. a, a spring; 37. a guide groove; 38. a guide block; 39. a hinge slot; 40. a, a plate spring; 41. swinging the bar; 42. a slide hole; 43. a triangular end; 44. supporting; 45. a raised head; 46. a ladder rail; 47. a ladder block; 48. a ring groove; 49. a card slot; 50. a limiting plate; 51. a plate spring B; 52. a swinging plate; 54. a straight rail; 55. b, a telescopic plate; 56. a telescopic rod; 57. an arc bar; 58. brushing sheets; 59. a spring B; 60. a circular groove; 61. a square groove.

Detailed Description

As shown in fig. 1 and 2, it comprises a mirror shell 1 with a lens 3, a power mechanism 10 and a brush mechanism 12 which are arranged in the mirror shell 1, wherein the mirror shell 1 is provided with a convex part 2; as shown in fig. 4, the inner top surface of the mirror shell 1 is provided with an upper chute 8, and the inner bottom surface is provided with a lower chute 6; an upper guide bar 9 is arranged in the upper chute 8, and a lower guide bar 7 is arranged in the lower chute 6; the power mechanism 10 is connected with the brush mechanism 12, and the brush mechanism 12 is matched with the lens 3.

As shown in fig. 3 and 7, the power mechanism 10 includes a swing arm 16, a rotating wheel 18, a volute spring 19, a rotating shaft 20, a bevel gear assembly 21, a telescopic shaft 33, a pull ring 34, a snap ring 23, a wind cup 26, a rotating ring 25, a toothed plate 24, an electric drive module 28, a gear 27, an a telescopic plate 30, an a plate spring 40, a B plate spring 51, a limit plate 50, a swing plate 52, an L bar 29, and a cone shell 15, as shown in fig. 4, wherein the cone shell 15 is mounted in a cone hole formed at the bottom of the mirror shell 1; as shown in fig. 1 and 3, one end of the L-shaped plate 14 is fixedly arranged on the inner bottom surface of the mirror shell 1, and the other end is provided with a rotating shaft 20; as shown in fig. 10, the runner 18 having a circular groove 60 on the side is mounted on one end of the rotating shaft 20 through a bearing; one end of a volute spiral spring 19 positioned in the circular groove 60 is fixedly connected with the rotating shaft 20, and the other end of the volute spiral spring is fixedly connected with the inner groove surface of the circular groove 60; as shown in fig. 3, one end of the radial arm 16 is fixedly arranged on the rotating wheel 18, and the other end is provided with a pin 17; as shown in fig. 9 and 10, the outer plate of the a expansion plate 30 is fixedly mounted on the side surface of the L plate 14, and the exposed end of the inner plate of the a expansion plate 30 is provided with an inclined surface and is matched with a square groove 61 on the outer circular surface of the rotating wheel 18; as shown in fig. 7, one end of the a spring 36 in the a expansion plate 30 is connected to the inner wall of the outer plate of the a expansion plate 30, and the other end is connected to the end of the inner plate of the a expansion plate 30, which has no slope; as shown in fig. 9, the L-shaped bar 29 slides in the sliding hole 42 of the horizontal section of the L-shaped plate 14, one end of the L-shaped bar 29 has a triangular end 43, and the other end is fixedly connected with the inner plate side of the a expansion plate 30; as shown in fig. 7 and 8, one end of the L-shaped second plate 22 is mounted on the L-shaped first plate 14, and the other end is mounted with an outer shaft of a rotary telescopic shaft 33; the outer shaft of the telescopic shaft 33 is in transmission connection with the rotating shaft 20 through the bevel gear combination 21; a pull ring 34 and a rotary ring 25 are fixedly arranged on an inner shaft of the telescopic shaft 33, and the rotary ring 25 is positioned at the lower end of the inner shaft of the telescopic shaft 33; one ends of the three swing bars 41 are respectively hinged in three hinge grooves 39 uniformly formed in the circumferential direction on the bottom surface of the rotating ring 25, and the other ends of the three swing bars are respectively provided with a wind cup 26; the three wind cups 26 are respectively matched with three baffles 31 which are uniformly distributed on the inner wall of the conical shell 15 in the circumferential direction; each swing bar 41 is provided with an A plate spring 40 for swinging and resetting; the electric drive module 28 is arranged on the L-shaped plate 14, and the output shaft of the electric drive module 28 is provided with a gear 27; as shown in fig. 3, 8, the toothed plate 24, which meshes with the gear 27, slides vertically inside the mirror casing 1; the snap ring 23 is arranged on the surface of the toothed plate 24 far away from the gear 27 by using a connecting plate 35; the pull ring 34 rotates in the ring groove 48 of the snap ring 23; as shown in fig. 10, a swing plate 52 is hinged to the side surface of the top of the toothed plate 24, a limit plate 50 located above the swing plate 52 is fixedly mounted on the toothed plate 24, and the limit plate 50 is matched with the swing plate 52; the swing plate 52 is provided with a B plate spring 51 for resetting; the wobble plate 52 engages the triangular end 43.

As shown in fig. 6, the brush mechanism 12 includes a straight rail 54, a B expansion plate 55, an expansion link 56, an arc 57, and a brush piece 58, as shown in fig. 5 and 6, wherein the lower end of the straight rail 54 having the B expansion plate 55 mounted on the top side thereof slides in the lower chute 6, and the expansion end of the B expansion plate 55 higher than the straight rail 54 slides in the upper chute 8; the lower end of the straight rail 54 and the telescopic end of the B telescopic plate 55 are both provided with a telescopic rod 56; a B spring 59 is arranged in each telescopic rod 56, one end of the B spring 59 is connected with the inner bottom of the outer rod in the telescopic rod 56, and the other end of the B spring 59 is connected with the end face of the inner rod in the telescopic rod 56; two ends of the arc strip 57 are respectively hinged with the telescopic ends of the two telescopic rods 56; the arc strip 57 is provided with a brush piece 58; the lens 3 between the arc 57 and the straight rail 54 is matched with the brush piece 58; the telescopic rod 56 on the straight rail 54 slides in the lower chute 6 and is positioned below the lower guide bar 7; the telescopic rod 56 on the telescopic plate B55 slides in the upper chute 8 and is positioned above the upper guide bar 9; as shown in fig. 1 and 3, the pin 17 slides in the straight rail 54.

As shown in fig. 7, two guide grooves 37 are symmetrically formed in the inner wall of the outer plate of the a telescopic plate 30 in the up-down direction, two guide blocks 38 are symmetrically installed in the inner plate of the a telescopic plate 30 in the up-down direction, and the two guide blocks 38 respectively slide in the two guide grooves 37; the A spring 36 is always in a compressed state; the end of the L-bar 29 attached to the a expansion plate 30 is adjacent to the end of the a expansion plate 30 where the inner plate has a bevel.

As shown in fig. 8, the side of the baffle 31 is provided with a cushion 32; as shown in fig. 7, one end of the plate spring a 40 is fixedly connected to the swivel 25, and the other end is fixedly connected to the corresponding swing bar 41; as shown in fig. 10, one end of the B-plate spring 51 is connected to the swing plate 52, the other end is connected to the stopper plate 50, and the B-plate spring 51 is positioned above the swing plate 52.

The bevel gear combination 21 is composed of two mutually meshed bevel gears 27 with 90-degree included angles between the two rotating shafts 20, wherein the size of the bevel gear 27 on the telescopic shaft 33 is smaller than that of the bevel gear 27 on the rotating shaft 20.

As shown in fig. 9 and 11, one end of the support 44 is fixedly connected with the horizontal section of the L-shaped plate 14, and the other end is provided with an elastic raised head 45; the lower part of the support 44 is provided with a ladder rail 46; the side surface of the top of the toothed plate 24 is provided with a clamping groove 49 matched with the raised head 45; a block 47 mounted on the toothed plate 24 slides in the ladder rail 46.

The working process is as follows: in the initial state, the brush piece 58 is in contact with the lens 3, and the brush piece 58 is close to the convex part 2 and does not shield the observation port of the lens shell 1; one end of A expansion plate 30 with an inclined plane is inserted into square groove 61 of runner 18, and both A spring 36 and volute spiral spring 19 are in a prepressing state; the wind cup 26 is positioned in the conical shell 15, the wind cup 26 is tightly attached to the corresponding baffle 31, and the A plate spring 40 is in a stretching shape; the top surface of the swing plate 52 is closely attached to the bottom surface of the limit plate 50, and the swing plate 52 is located above the triangular end 43.

When raining occurs, the electric drive module 28 is controlled to start, the gear 27 rotates, the gear 27 drives the toothed plate 24 and the upper coupling structure of the toothed plate 24 to move downwards, the toothed plate 24 drives the inner shaft of the telescopic shaft 33 and the rotating ring 25 to move downwards through the connecting plate 35, the clamping ring 23 and the pull ring 34, the wind cup 26 is gradually separated from the conical shell 15, the swing strip 41 gradually swings upwards when the A plate spring 40 is reset, but the baffle 31 still limits the rotation of the wind cup 26 or the swing strip 41, and the telescopic shaft 33 cannot rotate. Because the limit plate 50 limits the upward swing of the swing plate 52, when the toothed plate 24 moves downwards, the swing plate 52 extrudes the inclined plane of the triangular end 43, the L strip 29 drives the inner plate of the A telescopic plate 30 to move towards the direction away from the rotating wheel 18, the end, with the inclined plane, of the A telescopic plate 30 is separated from the square groove 61, and the A spring 36 continues to be compressed; then, under the reset of the spiral spring 19, the rotating wheel 18 rotates nearly a half turn, the rotating wheel 18 drives the straight rail 54 to slide in the direction away from the convex part 2 through the rotating arm 16 and the pin 17, the associated structure on the straight rail 54 synchronously slides in the direction, and the brush piece 58 brushes the mirror 3 once in the largest area as possible.

As the tooth plate 24 continues to move downward, the wobble plate 52 moves past the triangular end 43 and the end of the a extension plate 30 having a ramped surface contacts the outer circular surface of the rotor 18 as the a spring 36 returns. The toothed plate 24 drives the inner shaft of the telescopic shaft 33 to move downwards continuously through the connecting plate 35, the snap ring 23 and the pull ring 34, and the swing strip 41 gradually swings upwards under the reset of the plate spring A40; when the rotating ring 25 completely comes out of the conical shell 15, the electric driving module 28 is stopped, the telescopic shaft 33 reaches the longest length, the plate spring A40 restores to the natural shape, and the swinging strip 41 swings upwards to be horizontal; the rotation of the cups 26 and the wobble strip 41 is no longer restricted by the baffles 31.

When the automobile runs, the wind cup 26 is blown to rotate, the wind cup 26 drives the runner 18 to rotate through the swing bar 41, the telescopic shaft 33, the bevel gear combination 21, the rotating shaft 20 and the volute spiral spring 19, and the volute spiral spring 19 is slightly compressed to overcome the friction resistance from the A telescopic plate 30 to the runner 18; when the upper groove 61 of wheel 18 is realigned with a telescopic plate 30, the end of a telescopic plate 30 with the inclined surface is quickly inserted into the groove 61 under the reset of a spring 36. Since the A spring 36 is in a compressed state, the square groove 61 of the runner 18 is difficult to break through the inclined surface of the A expansion plate 30 at the moment; as cup 26 continues to be blown, the rotation of shaft 20 continues to compress volute spring 19, and when volute spring 19 reaches a certain compression amount, groove 61 above runner 18 can momentarily break through the inclined plane of extension plate a 30, and runner 18 continues to rotate, so that extension plate a 30 and spring a 36 are compressed again. The process is then repeated each time slot 61 above wheel 18 telescopes in alignment a. In summary, after the rotating wheel 18 breaks through the obstruction of the a telescopic plate 30, the rotating wheel 18 can rotate periodically, and the rotating wheel 18 drives the straight rail 54 to slide in the mirror housing 1 back and forth through the cantilever and the pin 17.

Taking the straight rail 54 to slide back and forth once as an example: when the straight rail 54 moves far away from the convex part 2 to the limit, the expansion plate contracts to the limit, the arc strip 57 bends to the limit, the bending of the arc strip 57 enables the narrow part of the lens 3 to be cleaned by the brush piece 58 as much as possible, and most area of the lens 3 can be cleaned by the brush piece 58. When the straight rail 54 moves toward the convex portion 2, the arc strip 57 gradually returns to its original shape, the brush piece 58 reverses to clean the lens 3, and the retractable plate is gradually stretched to its original shape under the guidance of the upper guide bar 9.

The brush sheet 58 brushes the lens 3 back and forth to clean the rain and fog on the lens 3 in time, so that the driver can observe the projection in the rearview mirror as well as possible.

After the automobile does not rain, a driver of the running automobile controls the electric drive module 28 to start, the gear 27 rotates reversely, the wind cup 26 is blown by wind to rotate, the toothed plate 24 resets upwards, and the snap ring 23 drives the inner shaft of the telescopic shaft 33 and the rotating ring 25 to reset upwards through the pull ring 34; the wind cup 26 and the swinging bar 41 gradually enter the conical shell 15, the swinging bar 41 is guided to gradually swing downwards on the inner wall of the conical shell 15, and the A plate spring 40 is stretched; the electric drive module 28 is stopped when the toothed plate 24 and the swivel 25 are returned upwardly to the initial position with the nose 45 in the catch 49. During the process that the rotating wind cup 26 and the swinging bar 41 gradually enter the cone shell 15, the rotating swinging bar 41 and the wind cup 26 collide with the soft cushion 32 on the baffle 31, and further the swinging bar 41 and the wind cup 26 cannot rotate any more, and the telescopic shaft 33 cannot rotate any more. At this time, if one end of the expansion plate A30 with an inclined plane is just positioned in the square groove 61 of the rotating wheel 18 and the volute spring 19 is in a compressed state and is difficult to break through the obstruction of the inclined plane of the expansion plate A30, the rotating wheel 18 does not rotate any more, the brush mechanism 12 is just reset to the initial position, the expansion shaft 33 rotates reversely under the reset of the volute spring 19, and the reverse expansion shaft 33 drives the wind cup 26 to rotate reversely through the rotating ring 25 and the swinging strip 41; due to the restriction of baffle 31, cup 26 can only reverse a small amount and thus volute spring 19 releases a small amount of compression. If one end of the A expansion plate 30 with the inclined surface is dislocated with the square groove 61 of the runner 18, the runner 18 continues to rotate along the original direction under the reset of the volute spiral spring 19 in a compressed state because the expansion shaft 33 does not rotate any more; when the square groove 61 of the runner 18 is realigned with the a telescopic plate 30, the beveled end of the a telescopic plate 30 is quickly inserted into the square groove 61 under the action of the a spring 36, which is followed by the above-described phenomenon that the beveled end of the a telescopic plate 30 is quickly inserted into the square groove 61, that is, the brush mechanism 12 is just reset to the initial position.

The structural proportion in the drawings of the invention is only for illustrating the principle and is not taken as the proportion of actual productization.

Claims

1. An automobile rearview mirror apparatus characterized in that: the mirror comprises a mirror shell provided with a lens, a power mechanism and a brush mechanism, wherein the power mechanism and the brush mechanism are arranged in the mirror shell; the inner top surface of the mirror shell is provided with an upper chute, and the inner bottom surface of the mirror shell is provided with a lower chute; an upper guide bar is arranged in the upper sliding chute, and a lower guide bar is arranged in the lower sliding chute; the power mechanism is connected with the brush mechanism, and the brush mechanism is matched with the lens;

the power mechanism comprises a rotary arm, a rotary wheel, a volute spiral spring, a rotary shaft, a bevel gear combination, a telescopic shaft, a pull ring, a snap ring, a wind cup, a rotary ring, a toothed plate, an electric drive module, a gear, an A telescopic plate, an A plate spring, a B plate spring, a limiting plate, a swinging plate, an L strip and a conical shell, wherein the conical shell is arranged in a conical hole formed in the bottom of the mirror shell; one end of the L-shaped plate is fixedly arranged on the inner bottom surface of the mirror shell, and the other end of the L-shaped plate is provided with a rotating shaft; the rotating wheel with a circular groove on the side surface is arranged at one end of the rotating shaft through a bearing; one end of the volute spiral spring positioned in the circular groove is fixedly connected with the rotating shaft, and the other end of the volute spiral spring is fixedly connected with the inner groove surface of the circular groove; one end of the rotary arm is fixedly arranged on the rotating wheel, and the other end of the rotary arm is provided with a pin; the outer plate of the A expansion plate is fixedly arranged on the side surface of the L plate, and the exposed end of the inner plate of the A expansion plate is provided with an inclined surface and matched with the square groove on the outer circular surface of the rotating wheel; one end of a spring A in the expansion plate A is connected with the inner wall of the outer plate of the expansion plate A, and the other end of the spring A is connected with one end of the inner plate of the expansion plate A, which is not provided with an inclined plane; the L strips slide in the sliding holes of the horizontal section of the L plate, one end of each L strip is provided with a triangular end, and the other end of each L strip is fixedly connected with the side face of the inner plate of the expansion plate A; one end of the L-shaped second plate is arranged on the L-shaped first plate, and the other end of the L-shaped second plate is provided with an outer shaft of a rotary telescopic shaft; the outer shaft of the telescopic shaft is in transmission connection with the rotating shaft through a bevel gear combination; a pull ring and a swivel are fixedly arranged on an inner shaft of the telescopic shaft, and the swivel is positioned at the lower end of the inner shaft of the telescopic shaft; one end of each of the three swing strips is hinged in three hinge grooves uniformly formed in the circumferential direction of the bottom surface of the rotating ring, and the other end of each of the three swing strips is provided with a wind cup; the three wind cups are respectively matched with three baffles which are uniformly distributed on the inner wall of the conical shell in the circumferential direction; each swing strip is provided with a plate spring A for swinging and resetting; the electric drive module is arranged on the L plate, and a gear is arranged on an output shaft of the electric drive module; a toothed plate meshed with the gear vertically slides in the mirror shell; the snap ring is arranged on the surface of the toothed plate far away from the gear by a connecting plate; the pull ring rotates in the ring groove of the snap ring; a limit plate positioned above the swing plate is fixedly arranged on the toothed plate, and the limit plate is matched with the swing plate; the swing plate is provided with a plate spring B for resetting; the swing plate is matched with the triangular end;

the brush mechanism comprises a straight rail, a B expansion plate, an expansion link, an arc strip and a brush piece, wherein the lower end of the straight rail, which is provided with the B expansion plate on the side surface of the top part, slides in the lower chute, and the expansion end, which is higher than the straight rail, of the B expansion plate slides in the upper chute; the lower end of the straight rail and the telescopic end of the B telescopic plate are both provided with a telescopic rod; a spring B is arranged in each telescopic rod, one end of the spring B is connected with the inner bottom of the outer rod in the telescopic rod, and the other end of the spring B is connected with the end face of the inner rod in the telescopic rod; two ends of the arc strip are respectively hinged with the telescopic ends of the two telescopic rods; the arc strip is provided with a brush piece; the lens positioned between the arc strip and the straight rail is matched with the brush piece; the telescopic rod on the straight rail slides in the lower chute and is positioned below the lower guide strip; the telescopic rod on the B telescopic plate slides in the upper chute and is positioned on the upper guide strip; the pin slides in the straight rail;

the inner wall of the outer plate of the expansion plate A is provided with two guide grooves in an up-down symmetrical manner, the inner plate of the expansion plate A is provided with two guide blocks in an up-down symmetrical manner, and the two guide blocks slide in the two guide grooves respectively; the spring A is always in a compressed state; one end of the L telescopic plates connected with the A is close to one end of the inner plate of the A telescopic plate, which is provided with an inclined plane;

a soft cushion is arranged on the side surface of the baffle; one end of the plate spring A is fixedly connected with the rotating ring, and the other end of the plate spring A is fixedly connected with the corresponding swing strip; one end of the plate spring B is connected with the swinging plate, the other end of the plate spring B is connected with the limiting plate, and the plate spring B is located on the upper side of the swinging plate.

2. The vehicle rearview mirror apparatus as claimed in claim 1, wherein: the bevel gear combination is composed of two engaged bevel gears with rotation axes forming an included angle of 90 degrees with each other, wherein the size of the bevel gear on the telescopic shaft is smaller than that of the bevel gear on the rotating shaft.

3. The vehicle rearview mirror apparatus as claimed in claim 1, wherein: one end of the support is fixedly connected with the horizontal section of the L plate, and the other end of the support is provided with an elastic raised head; the lower part of the support is provided with a ladder rail; the side surface of the top of the toothed plate is provided with a clamping groove matched with the raised head; the ladder blocks mounted on the toothed plates slide in the ladder rails.