CN111332103B

CN111332103B - Sun shield for automobile

Info

Publication number: CN111332103B
Application number: CN202010343785.8A
Authority: CN
Inventors: 李永建; 李水兰
Original assignee: Hangzhou Fuyang Xinyuan New Energy Co Ltd
Current assignee: Hangzhou Dinghao New Material Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2021-07-16
Anticipated expiration: 2039-11-18
Also published as: CN111332104B; CN110834521A; CN111332104A; CN110834521B; CN111332103A

Abstract

The invention belongs to the field of automobile accessories, and particularly relates to a sun shield for an automobile. The sun-shading area of the sun-shading board can be adjusted according to the protruding amount of the inner board from the outer board, a driver can adjust the sun-shading area according to actual requirements, and the adaptability and the operability are good. In addition, when the sunshade area is reduced according to actual demand needs, the extension amount of the inner plate from the outer plate can be retracted and adjusted, and a driver can conveniently adjust the sunshade area in real time. The action of turning down and packing up of sunshading board is the same with the use custom of traditional sunshading board, and the sunshading board packs up in-process can retrieve the planking with the inner panel voluntarily for extra sunshade area is automatic to be packed up, and humanized design greatly increased driver operability, avoid being different from the traffic accident that traditional action probably caused because of packing up the sunshading board.

Description

Sun shield for automobile

Technical Field

The invention belongs to the field of automobile accessories, and particularly relates to a sun visor for an automobile.

Background

The sun visor for the automobile is a plate which is arranged above a driver and used for preventing dazzling of sunlight, can be turned down and can also be laterally rotated when in use, and can be turned up when not in use. Because the existing sun shield adopts the shielding panel with fixed area, the shielding area is limited, and the aim of shielding sunlight in all directions cannot be achieved. Although the shielding area of the sun visor can be increased by opening the folding panel folded on the masking panel in the disclosed technology, the increased shielding area is not adjustable and has poor adaptability. In addition, after the sun visor is completely opened, if the sun visor is completely closed, the folding panel needs to be closed firstly, and then the shielding panel needs to be closed, so that the folding process of the sun visor is relatively complex, the influence time of closing the sun visor on a driver is prolonged, and traffic accidents are possibly caused.

The invention designs a sun visor for an automobile to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a sun visor for an automobile, which is realized by adopting the following technical scheme.

The sun visor for automobile includes two regulating mechanisms symmetrically mounted on the fixed rod, and the turning mechanism is connected with the regulating mechanisms.

The adjusting mechanism comprises a fixed arc plate, a sliding block B, a sleeve A, a sleeve B, a sliding block A and a swinging plate, wherein the sleeve A and the sleeve B are rotatably arranged on the fixed rod; the A sliding block slides in an A sliding groove arranged on the A sleeve through an A spring; the swing plate is arranged in an A notch formed in the A sliding block in a swinging mode, and the C vortex spring arranged in the A notch enables the swing plate to reset; the upper limit plate and the lower limit plate which are arranged in the notch A are respectively matched with the upper surface and the lower surface of the swinging plate; the rotating rods uniformly distributed on the side surface of the sleeve B in the circumferential direction are positioned in the circular grooves formed in the sleeve A; the rotating rod is matched with the swinging plate; the fixed arc plate is fixedly arranged on the fixed rod, and the sliding arc plate is arranged in an arc chute of the fixed arc plate in a sliding manner through a tension spring which is always in a stretching state; the sliding block B is slidably arranged in a notch B arranged at one end of the sliding arc plate through a spring B; the fixed arc plate is tightly attached to the A sleeve; the slide block A is respectively matched with the sliding arc plate and the slide block B, and the inclined plane at one end of the slide block B is matched with a convex block in the arc sliding groove.

The turnover mechanism comprises a rope A, a rope B, an inner plate, an outer plate and a tooth block, wherein a convex end on the outer plate is fixedly connected with the sleeve A, the inner plate is slidably arranged in an inner chute arranged on the outer plate, and straight teeth are uniformly arrayed on two sides of the inner chute; one end of a B rope is wound on the B sleeve, and the other end of the B rope penetrates into the inner chute of the outer plate to be connected with the inner plate; the two tooth blocks are respectively and slidably mounted in C sliding grooves symmetrically formed in two sides of the inner plate through C springs, one ends of the two A ropes are respectively connected with the tooth blocks, and the other ends of the two A ropes penetrate through the inner plate and are connected with square pull rings; the bevel end of the tooth block is matched with the straight-face tooth on one corresponding side.

Preferably, the fixed arc plate is fixedly arranged on the fixed rod through two symmetrically distributed L-shaped frames; the arc chute is divided into a groove B and a groove A by the convex block, and two arc rails with arc rail grooves are symmetrically arranged in the groove A; two ends of a T-shaped block arranged on the sliding arc plate slide in the two arc rail grooves; a plurality of tension springs are arranged between the convex block and the T-shaped block; the B sliding block is positioned in the B groove, a trapezoidal guide block arranged on the B sliding block slides in a trapezoidal guide groove arranged on the side surface of the B notch, and a B spring arranged in the trapezoidal guide groove is connected with the trapezoidal guide block; a plurality of clamping grooves A are uniformly formed in the inner arc surface of the fixed arc plate which is not provided with the arc sliding groove, one end of the clamping groove A which is farthest away from the groove B is a straight surface, the other end of the clamping groove A is a small-inclination-angle inclined surface, and the two ends of the other clamping grooves A are respectively a large-inclination-angle inclined surface and a small-inclination-angle inclined surface; the small-inclination-angle inclined planes are all positioned at the right end of the central plane of the clamping groove A; one end of the groove B, which is close to the groove A, is provided with an inclined plane; one end of the slider A, which is far away from the notch A, is a cambered surface, and two ends of the cambered surface are inclined planes; the cambered surface end of the sliding block A is respectively matched with the inner cambered surface of the sliding arc plate, one end surface of the sliding block B, which is far away from the inclined surface of the sliding arc plate, and the clamping groove A; and B, smoothing the upper arc surface of the slide block A and the inner arc surface of the slide arc plate.

Preferably, two sides of the sliding chute A are symmetrically provided with two guide grooves A, two sides of the sliding block A are symmetrically distributed with two guide blocks A, and the two guide blocks A slide in the two guide grooves A respectively; one end of each of the two springs A which are always in a compressed state is respectively connected with the two guide blocks A, and the other end of each spring A is respectively connected with the groove surface of the corresponding guide groove A; the center of the swing plate is arranged in the notch A through a shaft, one end of the C vortex spring is connected with the shaft, and the other end of the C vortex spring is connected with the side face of the notch A through a connecting block; one end of the swing plate close to the guide block A is a head end, the other end of the swing plate is a tail end, the upper limit plate is positioned at the head end, and the lower limit plate is positioned at the tail end; the peripheral groove surface of the guide groove A, the peripheral groove surface of the slide groove A, the peripheral surface of the slide block A and the peripheral surface of the guide block A are all subjected to smoothing treatment.

Preferably, one end of the A vortex spring is connected with the fixed rod, and the other end of the A vortex spring is connected with the side face, far away from the B sleeve, of the A sleeve through a connecting block; one end of the B vortex spring is arranged in a ring groove arranged on the B sleeve, and the other end of the B vortex spring is connected with the side surface of the A sleeve with the circular groove through a connecting block; the rope B is wound in a winding groove arranged in the sleeve B.

Preferably, two sides of the C-shaped sliding chute are symmetrically provided with two C guide grooves, two sides of the tooth block are symmetrically distributed with two C guide blocks, and the two C guide blocks slide in the two C guide grooves respectively; the C spring is arranged between the tooth block and the bottom of the corresponding C chute; two L-shaped grooves are symmetrically arranged in the inner plate; one end of the L-shaped groove is communicated with the bottom of the corresponding C chute, the other end of the L-shaped groove is communicated with one end face of the inner plate extending out of the outer plate, a fixed pulley is arranged at the corner of the L-shaped groove, and the corresponding rope A is positioned in the corresponding L-shaped groove and is guided by the fixed pulley; the two sides of the straight-surface teeth are respectively an inclined surface and a straight surface vertical to the side groove surface of the inner sliding groove; and the straight surface of the straight-surface tooth, the peripheral surface of the tooth block, the peripheral groove surface of the C sliding groove, the peripheral groove surface of the C guide groove and the peripheral surface of the C guide block are all subjected to smoothing treatment.

The volute springs are volute springs. The rotating rod, the upper limit plate and the lower limit plate are arranged in a reasonable space so that the rotating rod, the upper limit plate and the lower limit plate cannot move and interfere with each other.

Compared with the existing sun shield, the sun shield has the beneficial effects that:

1. the sun-shading area of the sun-shading board can be adjusted according to the protruding amount of the inner board from the outer board, a driver can adjust the sun-shading area according to actual requirements, and the adaptability and the operability are good. In addition, when the sunshade area is reduced according to actual demand needs, the extension amount of the inner plate from the outer plate can be retracted and adjusted, and a driver can conveniently adjust the sunshade area in real time.

2. The action of turning down and packing up of sunshading board is the same with the use custom of traditional sunshading board, and the sunshading board packs up in-process can retrieve the planking with the inner panel voluntarily for extra sunshade area is automatic to be packed up, and humanized design greatly increased driver operability, avoid being different from the traffic accident that traditional action probably caused because of packing up the sunshading board.

Drawings

Fig. 1 is an overall appearance diagram.

Fig. 2 is a sectional elevation view of the canting mechanism.

Fig. 3 is two enlarged partial views of fig. 2.

FIG. 4 is a side view of the connection between the outer panel and the A-jacket and a sectional view of the outer panel structure.

Fig. 5 is an a-cord installation diagram.

Fig. 6 is a sectional view of the inner plate.

Fig. 7 is a plan view showing the installation of the stator bar.

Fig. 8 is a perspective view and a sectional elevation view of the adjustment mechanism.

Fig. 9 is an installation view of the a and B scroll springs.

Fig. 10 is a structural view of the a set and the B set.

Fig. 11 is a structural view of the a slider mounted thereon.

Fig. 12 shows two views of the combination of the swing plate and the rotating rod.

FIG. 13 is a side cross-sectional view of the adjustment mechanism.

Fig. 14 is a cross-sectional view of a fixed arc plate from two different perspectives.

FIG. 15 is a B-block mounting cross-sectional view.

Fig. 16 is a structural view of the slider plate and the B slider.

Fig. 17 is a B-cord installation diagram.

Number designation in the figures: 1. fixing a rod; 2. an adjustment mechanism; 3. a turnover mechanism; 4. fixing a cover; 5. fixing a hook; 6. a convex end; 7. an outer plate; 8. an inner plate; 9. a, rope; 10. a square pull ring; 12. an L-shaped groove; 13. straight-faced teeth; 14. a tooth block; 15. a C chute; 16. c, a guide block; 17. c, a guide groove; 18. a C spring; 19. a fixed pulley; 20. an inner chute; 21. a fixed arc plate; 22. a, a set of the Chinese traditional medicine; 23. an L-shaped frame; 24. b, sheathing; 25. b, a vortex spring; 26. connecting blocks; 27. a vortex spring; 28. a circular groove; 29. a rotating rod; 30. a winding groove; 31. a ring groove; 32. a, a chute; 33. a, a guide groove; 34. a, sliding blocks; 35. a, cutting; 36. a, a guide block; 37. a, a spring; 38. a swinging plate; 39. a lower limiting plate; 40. an upper limiting plate; 41. c, a vortex spring; 42. a, a clamping groove; 43. b, sliding blocks; 44. a bump; 45. a tension spring; 46. a T-shaped block; 47. an arc rail groove; 48. a sliding arc plate; 49. an arc rail; 50. an arc chute; 51. a groove B; 52. a groove A; 53. a ladder-shaped guide block; 54. a spring B; 55. a ladder-shaped guide groove; 56. b, cutting; 57. b, rope; 58. a terminal end; 59. a head end; 60. a card slot B; 61. a large inclination angle slope; 62. a small inclination angle inclined plane.

Detailed Description

The structural proportion of the drawings of the invention is only schematic, and the structural proportion can be determined according to actual requirements.

A sun visor for a vehicle, as shown in figure 1, comprises two adjusting mechanisms 2 symmetrically arranged on a fixed rod 1, and a turnover mechanism 3 connected with the adjusting mechanisms 2.

The adjusting mechanism 2 comprises a fixed arc plate 21, a sliding arc plate 48, a B sliding block 43, an A sleeve 22, a B sleeve 24, an A sliding block 34 and a swinging plate 38, as shown in FIG. 8, wherein the A sleeve 22 and the B sleeve 24 are rotatably mounted on the fixed rod 1, an A vortex spring 27 for resetting the A sleeve 22 is mounted on the A sleeve 22, and a B vortex spring 25 for resetting the B sleeve 24 is mounted on the B sleeve 24; the A sliding block 34 slides in an A sliding groove 32 arranged on the A sleeve 22 through an A spring 37; as shown in fig. 11, the swing plate 38 is installed in the a notch 35 opened by the a slider 34 in a swinging manner, and the C vortex spring 41 installed in the a notch 35 resets the swing plate 38; the upper limit plate 40 and the lower limit plate 39 fitted in the a-cut 35 are fitted to the upper surface and the lower surface of the swing plate 38, respectively; as shown in fig. 8 and 10, the rotating rods 29 evenly distributed on the side surface of the sleeve B24 in the circumferential direction are positioned in the circular grooves 28 arranged on the sleeve a 22; as shown in fig. 12 and 13, the rotating rod 29 is engaged with the swinging plate 38; as shown in fig. 8, 13 and 14, the fixed arc plate 21 is fixedly mounted on the fixed rod 1, and the sliding arc plate 48 is slidably mounted in the arc chute 50 of the fixed arc plate 21 through the tension spring 45 which is always in a stretching state; the B sliding block 43 is slidably arranged in a B notch 56 arranged at one end of the sliding arc plate 48 through a B spring 54; the fixed arc plate 21 is tightly attached to the A sleeve 22; the a slider 34 is fitted with the sliding arc plate 48 and the B slider 43, respectively, and the inclined surface at one end of the B slider 43 is fitted with the projection 44 provided in the arc chute 50.

The turnover mechanism 3 comprises a rope A9, a rope B57, an inner plate 8, an outer plate 7 and a tooth block 14, as shown in figures 2, 3 and 4, wherein a convex end 6 on the outer plate 7 is fixedly connected with a sleeve A22, the inner plate 8 is slidably arranged in an inner chute 20 arranged on the outer plate 7, and straight teeth 13 are uniformly arrayed on two sides of the inner chute 20; one end of a B rope 57 is wound on the B sleeve 24, and the other end of the B rope penetrates into the inner chute 20 of the outer plate 7 to be connected with the inner plate 8; the two tooth blocks 14 are respectively and slidably mounted in C sliding grooves 15 symmetrically arranged on two sides of the inner plate 8 through C springs 18, one ends of the two A ropes 9 are respectively connected with the tooth blocks 14, and the other ends of the two A ropes penetrate through the inner plate 8 and are connected with square pull rings 10; the beveled end of the tooth block 14 engages the straight tooth 13 on the respective side.

As shown in fig. 8, the fixed arc plate 21 is fixed on the fixed rod 1 through two symmetrically distributed L-shaped brackets 23; as shown in fig. 14, 15 and 16, the projection 44 divides the arc chute 50 into a B-slot 51 and an a-slot 52, and two arc rails 49 having arc rail slots 47 are symmetrically installed in the a-slot 52; the two ends of the T-shaped block 46 of the sliding arc plate 48 slide in the two arc rail grooves 47; a plurality of tension springs 45 are mounted between the projection 44 and the T-shaped block 46; as shown in fig. 13 and 15, the B slider 43 is located in the B groove 51, the B slider 43 has a trapezoidal guide block sliding in a trapezoidal guide groove 55 provided at the side of the B notch 56, and a B spring 54 mounted in the trapezoidal guide groove 55 is connected to the trapezoidal guide block 53; as shown in fig. 13 and 14, a plurality of a slots 42 are uniformly formed on the inner arc surface of the fixed arc plate 21 without the arc chute 50, one end of the a slot 42 farthest from the B slot 51 is a straight surface, the other end is a small-inclination-angle inclined surface 62, and two ends of the other a slots 42 are respectively a large-inclination-angle inclined surface 61 and a small-inclination-angle inclined surface 62; the B slot 51 has an inclined plane near one end of the A slot 42; as shown in fig. 11, one end of the a slider 34 away from the a notch 35 is an arc surface, and two ends of the arc surface are inclined surfaces; as shown in FIG. 13, the cambered end of the A slide block 34 is respectively matched with the inner cambered surface of the slide arc plate 48, one end surface of the B slide block 43 far away from the inclined surface of the B slide block and the A clamping groove 42.

As shown in fig. 10, 11 and 13, two sides of the sliding chute a 32 are symmetrically provided with two guide grooves a 33, two sides of the sliding block a 34 are symmetrically provided with two guide blocks a 36, and the two guide blocks a 36 respectively slide in the two guide grooves a 33; one end of each of the two springs A37 which are always in a compressed state is respectively connected with the two guide blocks A36, and the other end of each of the two springs A is respectively connected with the groove surface of the corresponding guide groove A33; the center of the swing plate 38 is arranged in the A notch 35 through a shaft, one end of a C vortex spring 41 is connected with the shaft, and the other end of the C vortex spring is connected with the side surface of the A notch 35 through a connecting block 26; the swing plate 38 is adjacent to the A guide block 36 with a head end 59 at one end and a tail end 58 at the other end, the upper limit plate 40 is located at the head end 59, and the lower limit plate 39 is located at the tail end 58.

As shown in fig. 8 and 9, one end of the a vortex spring 27 is connected with the fixed rod 1, and the other end is connected with the side of the a sleeve 22 far away from the B sleeve 24 through a connecting block 26; one end of the B vortex spring 25 is arranged in a ring groove 31 arranged on the B sleeve 24, and the other end is connected with the side surface of the A sleeve 22 with a circular groove 28 through a connecting block 26; as shown in fig. 17, the B cord 57 is wound in the winding groove 30 provided in the B cover 24.

As shown in fig. 3, 5 and 6, two C guide grooves 17 are symmetrically formed on two sides of the C chute 15, two C guide blocks 16 are symmetrically distributed on two sides of the tooth block 14, and the two C guide blocks 16 respectively slide in the two C guide grooves 17; the C spring 18 is arranged between the tooth block 14 and the bottom of the corresponding C sliding chute 15; two L-shaped grooves 12 are symmetrically arranged in the inner plate 8; one end of the L-shaped groove 12 is communicated with the bottom of the corresponding C sliding groove 15, the other end of the L-shaped groove is communicated with one end face of the inner plate 8 extending out of the outer plate 7, a fixed pulley 19 is arranged at the corner of the L-shaped groove 12, and the corresponding A rope 9 is positioned in the corresponding L-shaped groove 12 and is guided by the fixed pulley 19; the two sides of the straight teeth 13 are respectively an inclined plane and a straight plane perpendicular to the side groove surface of the inner chute 20.

As shown in fig. 7, the vertical end of the fixed rod 1 is rotatably installed in the fixed cover 4, and the horizontal end of the fixed rod 1 is hooked in the fixed hook 5; the fixed rod 1, the fixed cover 4 and the fixed hook 5 all adopt the prior art.

In fig. 14, the dotted line is the center line of the first a locking groove 42 and the center line passes through the center of the fixed arc plate 21, the inclination angle of the small inclination angle inclined plane 62 is the acute angle formed by the inclined plane of the a locking groove 42 close to the B groove 51 and the dotted line, and the acute angle is between 20 ° and 30 ° to ensure that the a sliding block 34 does not automatically cross the small inclination angle inclined plane 62 of the a locking groove 42; the inclination angle of the large-inclination-angle inclined surface 61 is an acute angle formed by the other inclined surface of the a-slot 42 and a dotted line, and the acute angle is between 50 degrees and 60 degrees, so that the a-slider 34 is ensured to easily pass over the large-inclination-angle inclined surface 61 of the a-slot 42.

The working process of the invention is as follows: under the initial state that the turnover mechanism 3 is not turned down to shade the sun, the rope B57 and the rope A9 are both in a tight state, and the inclined plane end of the tooth block 14 penetrates out of the C chute 15 to be in limit fit with the straight plane of the corresponding straight-plane tooth 13; the arc surface end of the A sliding block 34 is attached to the inner arc surface of the sliding arc strip, the A spring 37 is in a compressed state, the A guide block 36 is positioned in the middle of the A guide groove 33, the circumferential track of the rotating rod 29 is positioned at the head end 59 of the swinging plate 38, and the swinging plate 38 is attached to the upper limit plate 40 and the lower limit plate 39; as shown in fig. 12, 13 and 17, in this state, the counterclockwise rotation of the rotating rod 29 is limited by the swing plate 38, the B sleeve 24 cannot release the B rope 57, the inner plate 8 cannot be pulled out from the outer plate 7, the end of the inner plate 8 is attached to the inner end surface of the inner chute 20, a B clamping groove 60 is formed between the B sliding block 43 positioned in the B groove 51 and the inner arc surface of the fixed arc plate 21, and the B sliding block 43 is attached to the side surface of the B groove 51 away from the bump 44; the tension spring 45 is in a tension state, and the T-shaped block 46 is positioned at the top end of the arc rail groove 47.

When the turnover mechanism 3 is to be turned down to shade the sun, the outer plate 7 is manually turned down, all the mounting structures in the outer plate 7 are synchronously turned down along with the outer plate 7, as shown in fig. 13, the outer plate 7 drives the A sleeve 22 and the A sliding block 34 in the A sleeve 22 to rotate anticlockwise, the A vortex spring 27 is compressed, the end part of the inner plate 8 is attached to the inner end face of the inner chute 20 due to the fact that the B rope 57 is in a tightened state, the B vortex spring 25 connects the A sleeve 22 with the B sleeve 24, and the B sleeve 24 can finally rotate along with the A sleeve 22 due to the three reasons. When the outer plate 7 is turned to the vertical state, the a slide block 34 is aligned with the B slot 60, under the reset action of the a spring 37, the a slide block 34 is inserted into the B slot 60 and contacts with the B slide block 43, the a guide block 36 slides to the end of the a guide groove 33, and at the moment, the a spring 37 is still in a compressed state; the slider A34 drives the swing plate 38 to move, so that the circumferential track of the rotating rod 29 is positioned at the tail end of the swing plate 38; because the side surface of the slide block A34 is attached to the side surface of the notch B56 of the sliding arc plate 48, and the pretension force of the tension spring 45 is far greater than the compression force of the vortex spring A27, the slide block A34 cannot be driven by the sleeve A22 to be separated from the notch B60 by the vortex spring A27 in a compressed state, the sliding arc plate 48 does not slide, and the vertical positions of the sleeve A22 and the outer plate 7 are limited. The turnover mechanism 3 can shade the sun.

When the shading area formed by the outer plate 7 and the inner plate 8 which is not pulled out is not enough to completely shade sunlight, the square pull ring 10 is manually pulled downwards, the square pull ring 10 pulls the tooth block 14 to move towards the bottom of the C sliding groove 15 through the rope A9, the C spring 18 is compressed, the C guide block 16 moves to one end of the C guide groove 17 and limits the tooth block 14 to continue to move towards the bottom of the C sliding groove 15, and at the moment, the inclined plane end of the tooth block 14 completely enters the C sliding groove 15. The square pull ring 10 drives the inner plate 8 to extend out of the outer plate 7 through the A rope 9, the tooth block 14 and the C guide block 16 to increase the sun shading area, the inner plate 8 pulls the B rope 57 to enable the B sleeve 24 to rotate anticlockwise to release the B rope 57, the B vortex spring 25 is gradually compressed, and the A sleeve 22 cannot rotate anticlockwise through the B vortex spring 25 when the B sleeve 24 rotates anticlockwise as the compression force of the A vortex spring 27 is larger than that of the B vortex spring 25 in the state; the B sleeve 24 drives the rotating rod 29 to rotate anticlockwise, the corresponding rotating rod 29 pokes and passes over the tail end 58 of the swinging plate 38, the swinging plate 38 swings towards the upper limit plate 40, and the C vortex spring 41 is compressed. When the area of the inner plate 8 extending out of the outer plate 7 reaches the required sunshade area, the square pull ring 10 can be stopped to be pulled, the swinging plate 38 is returned to the lower limit plate 39 in a swinging way under the reset action of the C vortex spring 41, and the rotating rod 29 is driven by the B sleeve 24 to rotate clockwise under the reset action of the B vortex spring 25; since the swing plate 38 is restricted from swinging downward by the lower limit plate 39, the corresponding rotary lever 29 cannot rotate clockwise so that the B-sleeve 24 maintains this position and the B-cord 57 cannot be recovered, and the B-coil spring 25 and the a-coil spring 27 are still in a compressed state. Under the reset action of the C spring 18, the tooth block 14 extends out of the C sliding chute 15 again and is inserted between two corresponding straight teeth 13, and the tooth block 14 is reset by pulling the square pull ring 10 through the A rope 9.

When the driver carelessly pulls the inner plate 8 out of the outer plate 7 by an amount exceeding the actual required sunshade area, the driver manually pushes the direction pull ring 10 upwards, and the direction pull ring 10 pushes the inner plate 8 to retract into the outer plate 7; in the process that the inner plate 8 retracts towards the outer plate 7, the inclined surfaces of the tooth blocks 14 are sequentially matched with the inclined surfaces of the straight-surface teeth 13, and under the extrusion action of the inclined surfaces, the tooth blocks 14 move towards the C sliding grooves 15 in a reciprocating mode and the C springs 18 are compressed in a reciprocating mode; when the inner plate 8 retracts into the outer plate 7 by a proper amount, the pushing of the square pull ring 10 is stopped, the tooth blocks 14 extend out of the C sliding groove 15 again under the reset action of the C spring 18 and are inserted between the two corresponding straight teeth 13, and the B rope 57 is in a loose state; because the lower surface of the tooth block 14 is a straight surface and the upper surface of the straight-surface tooth 13 is a straight surface, the inner plate 8 cannot automatically extend out of the outer plate 7 after the lower surface of the tooth block 14 is attached to the upper surface of the straight-surface tooth 13, and the extension amount of the inner plate 8 from the outer plate 7 is ensured to reach a proper sunshade area.

When the turnover mechanism 3 needs to be turned over upwards for resetting, the outer plate 7 is manually shifted to swing upwards, as shown in fig. 13, the outer plate 7 drives the sleeve a 22 and the slide a 34 to rotate along the guide needle, the slide a 34 and the slide a 34 are reset, because the side surface of the slide a 34 is attached to the side surface of the notch B56 of the slide arc plate 48, the slide a 34 cannot be separated from the notch B60, under the action of an external force and the reset force of the scroll spring a 27, the slide a 34 drives the slide arc plate 48 to slide clockwise and the tension spring 45 continues to be stretched, the slide arc plate 48 drives the slide B43 to move synchronously through the ladder-shaped guide block 53, the inclined surface of the slide B43 is in extrusion fit with the convex block 44, the slide B43 moves towards the slide a 34 and completely extrudes the slide a 34 from the notch B60, the spring B54 is compressed, and at this time, the T. When the slide block 34 a is separated from the B slot 60 and contacts the inner arc surface of the sliding arc plate 48, the external acting force is removed, and the slide block 34 a is driven by the sleeve a 22 to rotate along the inner arc surface of the sliding arc plate 48 to reset under the reset action of the scroll spring 27 a. When the A slide block 34 is separated from the B clamping groove 60, the slide arc plate 48 is moved and reset under the reset action of the tension spring 45, and the B slide block 43 is moved and reset under the reset action of the B spring 54.

When the slide block 34A is separated from the clamping groove 60B, the slide block 34A moves towards the center of the sleeve A22 to reset to an initial position, the spring A37 is compressed to an initial state again, the swing plate 38 moves to reset along with the slide block 34A, and at the moment, the circumferential track of the rotating rod 29 is located at the head end 59 of the swing plate 38 again; under the reset action of the B vortex spring 25, the B sleeve 24 drives the rotating rod 29 to rotate clockwise, the corresponding rotating rod 29 downwards stirs the head end 59 of the swinging plate 38 and sequentially crosses the swinging plate 38, the swinging plate 38 swings in the direction far away from the upper limit plate 40, and the C vortex spring 41 is compressed; the B sleeve 24 rotates clockwise to recover the B rope 57, the B rope 57 pulls the inner plate 8 to move and retract into the outer plate 7 in the recovery process, and the tooth block 14 on the inner plate 8 moves to repeat the process of reciprocating in the C chute 15 in the process that the inner plate 8 moves and retracts into the outer plate 7; after the B-set 24 is restored by the B-vortex spring 25, the inner plate 8 retracts into the outer plate 7 to the initial position, and the swing plate 38 is rotated and restored in the direction of the upper limit plate 40 by the restoring action of the C-vortex spring 41.

When a driver wants to enable the outer plate 7 to continuously swing towards the front windshield from a vertical state, the driver manually continues to stir the outer plate 7 to swing towards the front windshield, the outer plate 7 drives the sleeve A22 and the slider A34 to continuously rotate anticlockwise, the inclined plane of the slider A34 is matched with the inclined plane at the B groove 51 to enable the slider A34 to slide out of the B groove 60, the slider A34 slides into the first A groove 42, the slider A34 which continuously rotates anticlockwise is matched with the large inclined plane 61 of the A groove 42 to enable the slider A34 to easily pass through the first A groove 42, then the slider A34 can sequentially pass through the A groove 42 and stop at a required position in the A groove 42, and the swing of the outer plate 7 to the required position is finished. When the a slider 34 is located in the corresponding a slot 42, since the a spring 37 is in a compressed state and the inclined surface of the a slider 34 is in contact fit with the small inclined surface 62 of the a slot 42, and the compression force of the a scroll spring 27 is much smaller than that of the a spring 37, the restoring force of the a scroll spring 27 is not enough to make the a slider 34 pass over the small inclined surface 62, so that the a sleeve 22 and the outer plate 7 are maintained at the positions to be adjusted. Before the outer panel 7 is pivoted further in the direction of the front windshield from the upright position, the inner panel 8 cannot be pulled out of the outer panel 7, and the inner panel 8 can be pulled out of the outer panel 7 again after the outer panel 7 has been pivoted into the adjusted position. When the outer plate 7 needs to swing to the initial state, the outer plate 7 is swung and reset through manual shifting, under the action of external force and the reset force of the A vortex spring 27, the A slide block 34 can cross the small inclined plane 62 of the corresponding A clamping groove 42, when the A slide block 34 crosses all the A clamping grooves 42 and is inserted into the B clamping groove 60 again, the outer plate 7 continues to be shifted to swing and reset, the process after the outer plate 7 is shifted to swing and reset is continued, and the process that the A slide block 34 in the A sleeve 22 is separated from the B clamping groove 60 and is reset along with the A sleeve 22 is repeated.

After the sun visor of the invention is used for a long time, the compression force of the A spring 37 may be weakened, the inclined plane of the A slide block 34 cannot maintain the large blocking force formed between the inclined plane 62 with the small inclination angle of the A clamping groove 42, the A sleeve 22 drives the A slide block 34 to easily pass through the A clamping groove 42 under the reset of the A vortex spring 27, but the A slide block 34 can also move to reset into the B clamping groove 60, and the side surface of the A slide block 34 is attached to the side surface of the B notch 56 of the sliding arc plate 48, so that the A slide block 34 cannot automatically separate from the B clamping groove 60, and the outer plate 7 can be ensured to maintain the function of the vertical state, and the vertical state is the common sun-shading state, thereby ensuring the most common functions and having better practicability.

Claims

1. A sun visor for a vehicle, characterized in that: the turnover mechanism comprises two adjusting mechanisms symmetrically arranged on a fixed rod, and the turnover mechanism is connected with the adjusting mechanisms;

the adjusting mechanism comprises a fixed arc plate, a sliding block B, a sleeve A, a sleeve B, a sliding block A and a swinging plate, wherein the sleeve A and the sleeve B are rotatably arranged on the fixed rod; the A sliding block slides in an A sliding groove arranged on the A sleeve through an A spring; the swing plate is arranged in an A notch formed in the A sliding block in a swinging mode, and the C vortex spring arranged in the A notch enables the swing plate to reset; the upper limit plate and the lower limit plate which are arranged in the notch A are respectively matched with the upper surface and the lower surface of the swinging plate; the rotating rods uniformly distributed on the side surface of the sleeve B in the circumferential direction are positioned in the circular grooves formed in the sleeve A; the rotating rod is matched with the swinging plate; the fixed arc plate is fixedly arranged on the fixed rod, and the sliding arc plate is arranged in an arc chute of the fixed arc plate in a sliding manner through a tension spring which is always in a stretching state; the sliding block B is slidably arranged in a notch B arranged at one end of the sliding arc plate through a spring B; the fixed arc plate is tightly attached to the A sleeve; the slide block A is respectively matched with the sliding arc plate and the slide block B, and an inclined plane at one end of the slide block B is matched with a convex block in the arc chute;

the turnover mechanism comprises a rope A, a rope B, an inner plate, an outer plate and a tooth block, wherein a convex end on the outer plate is fixedly connected with the sleeve A, the inner plate is slidably arranged in an inner chute arranged on the outer plate, and straight teeth are uniformly arrayed on two sides of the inner chute; one end of a B rope is wound on the B sleeve, and the other end of the B rope penetrates into the inner chute of the outer plate to be connected with the inner plate; the two tooth blocks are respectively and slidably mounted in C sliding grooves symmetrically formed in two sides of the inner plate through C springs, one ends of the two A ropes are respectively connected with the tooth blocks, and the other ends of the two A ropes penetrate through the inner plate and are connected with square pull rings; the bevel end of the tooth block is matched with the straight-face tooth on the corresponding side; the two sides of the straight-face tooth are respectively an inclined face and a straight face vertical to the side groove face of the inner sliding groove, and the inclined-face end of the tooth block is matched with the inclined-face end of the straight-face tooth on the corresponding side; the straight-face end of the tooth block is matched with the straight-face end of the straight-face tooth on the corresponding side;

the fixed arc plate is fixedly arranged on the fixed rod through two L-shaped frames which are symmetrically distributed; the arc chute is divided into a groove B and a groove A by the convex block, and two arc rails with arc rail grooves are symmetrically arranged in the groove A; two ends of a T-shaped block arranged on the sliding arc plate slide in the two arc rail grooves; a plurality of tension springs are arranged between the convex block and the T-shaped block; the B sliding block is positioned in the B groove, a trapezoidal guide block arranged on the B sliding block slides in a trapezoidal guide groove arranged on the side surface of the B notch, and a B spring arranged in the trapezoidal guide groove is connected with the trapezoidal guide block; a plurality of clamping grooves A are uniformly formed in the inner arc surface of the fixed arc plate which is not provided with the arc sliding groove, one end of the clamping groove A which is farthest away from the groove B is a straight surface, the other end of the clamping groove A is a small-inclination-angle inclined surface, and the two ends of the other clamping grooves A are respectively a large-inclination-angle inclined surface and a small-inclination-angle inclined surface; one end of the groove B, which is close to the groove A, is provided with an inclined plane; one end of the slider A, which is far away from the notch A, is a cambered surface, and two ends of the cambered surface are inclined planes; the cambered surface end of the sliding block A is respectively matched with the inner cambered surface of the sliding arc plate, one end surface of the sliding block B, which is far away from the inclined surface of the sliding arc plate, and the clamping groove A;

two sides of the sliding chute A are symmetrically provided with two guide grooves A, two sides of the sliding block A are symmetrically distributed with two guide blocks A, and the two guide blocks A slide in the two guide grooves A respectively; one end of each of the two springs A which are always in a compressed state is respectively connected with the two guide blocks A, and the other end of each spring A is respectively connected with the groove surface of the corresponding guide groove A; the center of the swing plate is arranged in the notch A through a shaft, one end of the C vortex spring is connected with the shaft, and the other end of the C vortex spring is connected with the side face of the notch A through a connecting block; one end of the swing plate close to the guide block A is a head end, the other end of the swing plate is a tail end, the upper limit plate is positioned at the head end, and the lower limit plate is positioned at the tail end;

the matching direction of the tooth block and the straight face tooth is as follows: when the inner plate retracts inwards towards the outer plate, the inclined surface of the tooth block is matched with the inclined surface of the straight-surface tooth; when the inner plate extends out of the outer plate, the straight surface of the tooth block is matched with the straight surface of the straight-surface tooth.

2. The sun visor for an automobile according to claim 1, wherein: one end of the A vortex spring is connected with the fixed rod, and the other end of the A vortex spring is connected with the side face, far away from the B sleeve, of the A sleeve through the connecting block; one end of the B vortex spring is arranged in a ring groove arranged on the B sleeve, and the other end of the B vortex spring is connected with the side surface of the A sleeve with the circular groove through a connecting block; the rope B is wound in a winding groove arranged in the sleeve B.

3. The sun visor for an automobile according to claim 1, wherein: two C guide grooves are symmetrically formed in two sides of the C sliding groove, two C guide blocks are symmetrically distributed on two sides of the tooth block, and the two C guide blocks slide in the two C guide grooves respectively; the C spring is arranged between the tooth block and the bottom of the corresponding C chute; two L-shaped grooves are symmetrically arranged in the inner plate; one end of the L-shaped groove is communicated with the bottom of the corresponding C-shaped chute, the other end of the L-shaped groove is communicated with one end face of the inner plate extending out of the outer plate, a fixed pulley is arranged at the corner of the L-shaped groove, and the corresponding A rope is positioned in the corresponding L-shaped groove and guided by the fixed pulley.