CN114271776A

CN114271776A - Glasses for testing eyesight of ophthalmology

Info

Publication number: CN114271776A
Application number: CN202111605458.6A
Authority: CN
Inventors: 封彦龙
Original assignee: 988th Hospital of the Joint Logistics Support Force of PLA
Current assignee: 988th Hospital of the Joint Logistics Support Force of PLA
Priority date: 2021-12-25
Filing date: 2021-12-25
Publication date: 2022-04-05

Abstract

The invention relates to the technical field of ophthalmic vision testing, and particularly discloses glasses for ophthalmic vision testing, which comprise a glasses frame, a glasses frame and glasses legs.

Description

Glasses for testing eyesight of ophthalmology

Technical Field

The invention relates to the technical field of ophthalmic vision tests, in particular to glasses for ophthalmic vision tests.

Background

The eye plate and the small-hole vision shielding plate are common tools in vision detection. In the existing clinical practice of ophthalmic examination, besides the eye shielding plate is adopted to detect the vision, a small-hole vision shielding plate is also adopted to eliminate the influence of astigmatism or refractive turbidity; however, in the prior art, when the pinhole vision test is performed, the examinee is required to cover one eye by the eye shielding plate, the other eye is covered by the eye shielding plate with the pinhole and then the test is performed, so that the operation is complex, the problem of inconvenience in pinhole vision test exists, the eye shielding plate is mostly made of plastic or metal, and the eye shielding plate can be reused after being sterilized after being used, and the sterilization is inconvenient.

In view of the above-mentioned related technologies, the inventor of the present application finds that at least the following technical problems exist in the process of implementing the technical solution of the invention in the embodiment of the present application: however, for children, the children need to watch with one eye when testing eyesight, and the other eye is closed or shielded in the past, so that the closed eye is not beneficial to testing eyesight; secondly, some people can open eyes secretly, and the detected eyesight is inaccurate through cheating interference detection, so that the health of children is not facilitated.

Disclosure of Invention

The embodiment of the application provides a glasses for ophthalmology eyesight test, has solved the monocular of not being convenient for among the prior art and has watched the problem of measuring eyesight, is convenient for adjust glasses in order to realize can the monocular effect of watching and measuring eyesight.

The embodiment of the application provides glasses for testing eyesight of ophthalmology, which comprise a glasses frame, a glasses frame and glasses legs, wherein the glasses frame is provided with a shading mechanism; the shading mechanism comprises a shading sheet group, a limiting component and a driving component; the limiting component is arranged on the mirror frame; the shading sheet group and the driving assembly are both arranged on the limiting assembly; the driving component drives the shading sheet group to open or close

Furthermore, the limiting component comprises a limiting ring arranged on one side of the mirror frame; the limiting ring is provided with a plurality of limiting grooves, and the limiting grooves are uniformly distributed along the circumferential direction of the limiting ring.

Furthermore, the shading sheet group comprises a plurality of fan-shaped plates spliced into a circular plate shape; the fan-shaped plate is provided with a limiting block; the limiting block is arranged in the limiting groove in a sliding mode.

Further, the driving assembly comprises a first driving ring arranged on one side of the limiting ring, a second driving ring arranged on the other side of the limiting ring, and a connecting ring for connecting the first driving ring and the second driving ring; the connecting ring is in circumferential rotation fit with the limiting ring; a plurality of arc-shaped grooves are formed in the second driving ring; the arc-shaped grooves and the limiting grooves are arranged in a one-to-one correspondence manner; a limiting column is arranged at the position, close to the outer side, of the sector plate; the limiting column is in sliding fit with the arc-shaped groove.

Further, the spectacle frame comprises a first bracket and a second bracket, wherein the middle parts of the first bracket and the second bracket are hinged with each other; the first support and the second support are fixed through a first fixing mechanism.

Furthermore, the first fixing mechanism comprises a first positioning disc arranged on the first support, a second positioning disc arranged on the second support and a first driving column arranged on the first positioning disc; the first driving column is inserted on the first bracket and is in sliding fit with the first bracket; a first positioning spring is sleeved on the first driving column; two ends of the first positioning spring are respectively fixedly connected with the first bracket and the first positioning disc; one side of the first positioning disc, which is opposite to the second positioning disc, is provided with an annular first sawtooth groove; and the two first sawtooth grooves are clamped and connected.

Further, the glasses legs are connected with the glasses frame through a second fixing mechanism; the second fixing mechanism comprises a third positioning plate arranged at the end part of the spectacle frame, a fourth positioning plate arranged at the end part of the spectacle leg and a second driving column arranged on the third positioning plate; the second driving column is inserted at the end part of the spectacle frame and is in sliding fit with the spectacle frame; a second positioning spring is sleeved on the second driving column; two ends of the second positioning spring are respectively fixedly connected with the spectacle frame and the third positioning plate; one side of the third positioning disc, which is opposite to the side of the fourth positioning disc, is provided with an annular second sawtooth groove; and the two second sawtooth grooves are clamped and connected.

Furthermore, the glasses legs comprise first support legs connected with the glasses frame and second support legs inserted in the first support legs and in sliding fit with the first support legs; the first leg and the second leg are connected by an adjustment mechanism.

Furthermore, an accommodating groove is formed in the end part of the first supporting leg; the end part of the second supporting leg is inserted into the accommodating groove; a through groove communicated with the accommodating groove is formed in one side of the first supporting leg; the adjusting mechanism comprises a fixed seat fixed on the first supporting leg and a positioning part hinged on the fixed seat;

the second supporting leg is provided with an oblique tooth groove; one end of the positioning part penetrates through the through groove and is inserted into the oblique tooth groove; the end part of the positioning part inserted in the oblique tooth groove is provided with an oblique plane; the inclined surface is inclined towards the inner side of the glasses legs; the oblique tooth inclination direction of the oblique tooth groove is matched with the oblique plane of the positioning part.

Furthermore, a baffle plate is arranged on the inner side of the second supporting leg; one end of the blocking piece extends to a position which is overlapped with the inner side of the first supporting leg.

The technical scheme provided in the embodiment of the application at least has the following technical effects or advantages:

1. owing to adopted shading mechanism, so can be convenient for adjust the shading piece group, when needing the monocular to watch on and detect eyesight, can drive the shading piece group through drive assembly and close, effectively shelter from the picture frame of one side, effectively solved among the prior art be not convenient for the monocular watch and detect the problem of eyesight, be convenient for adjust glasses in order to realize can the monocular watch and detect the effect of eyesight.

2. Owing to adopted the rotatable structure of first support and second support, so can be convenient for adjust the angle of spectacle frame for first support and second support drive two picture frames respectively and are adapted to the person's of wearing face, adjust the picture frame to the angle that closes the messenger, effectively solved among the prior art picture frame for fixed shape, can not adapt to the problem in people's face, and then realized having improved the suitability of spectacle frame, improved the application scope of glasses.

3. Due to the fact that the structure of the second fixing mechanism is adopted, the angle between the glasses legs and the glasses frame can be adjusted, the glasses legs can be attached to the head of a person, a better supporting effect is achieved, the problems that in the prior art, the rotation angle between the glasses legs and the glasses frame is limited, and the glasses cannot be adjusted better are effectively solved, the angle between the glasses legs and the glasses frame can be adjusted conveniently, and the practicability of the glasses is improved.

Drawings

Fig. 1 is a schematic structural view of the whole in the embodiment of the present application;

fig. 2 is a schematic structural diagram of a spectacle frame in an embodiment of the present application;

FIG. 3 is an enlarged schematic view at A in FIG. 1;

fig. 4 is a schematic connection diagram of a temple and an eyeglass frame in an embodiment of the present application;

FIG. 5 is a schematic view of the structure of a temple in an embodiment of the present application;

FIG. 6 is an exploded view of the shutter mechanism in an embodiment of the present application;

fig. 7 is a schematic view of a mounting structure of a frame in an embodiment of the present application;

in the figure: 1. a spectacle frame; 11. a first bracket; 111. a first fixing sheet; 12. a second bracket; 121. a second fixing sheet; 13. a baffle plate; 14. a strip-shaped groove; 15. a scale bar; 16. a first connecting piece; 17. a second connecting sheet; 2. a mirror frame; 21. a lens slot; 22. an elastic sheet; 3. a temple; 31. a first leg; 311. a first support bar; 312. a second support bar; 313. accommodating grooves; 314. a through groove; 32. a second leg; 321. an oblique gullet; 4. a first fixing mechanism; 41. a first positioning plate; 42. a second positioning plate; 43. a first drive column; 44. a first movable hole; 45. a first placing groove; 46. a first positioning spring; 47. a first sawtooth groove; 5. an installation mechanism; 51. a lead screw; 52. a threaded seat; 521. a pointer; 53. a first bevel gear; 54. a second bevel gear; 55. mounting a column; 6. a second fixing mechanism; 61. a third positioning plate; 62. a fourth positioning plate; 63. a second drive column; 64. a second movable hole; 65. a second placing groove; 66. a second positioning spring; 67. a second sawtooth groove; 7. an adjustment mechanism; 71. a fixed seat; 72. a positioning part; 721. positioning a plate; 722. positioning blocks; 8. a light-shielding mechanism; 81. a shading sheet group; 811. a sector plate; 812. a limiting block; 813. a limiting column; 82. a limiting component; 821. a limiting groove; 83. a drive assembly; 831. a first drive ring; 832. a second drive ring; 833. a connecting ring; 834. an arc-shaped groove.

Detailed Description

The embodiment of the application discloses provides a glasses for ophthalmology eyesight test, through setting up shading mechanism 8, can be through rotating go-between 833, make second drive ring 832 can drive sector plate 811 and remove to the inner peripheral surface department of spacing ring by the outer peripheral face of spacing ring, make a plurality of sector plates 811 splice into the plectane in the center department of spacing ring, 2 departments of lens frame shelter from, effectively solved among the prior art be not convenient for the monocular of watching and detect the problem of eyesight, be convenient for adjust glasses in order to realize can the monocular of watching and detect the effect of eyesight.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Referring to fig. 1, glasses for ophthalmic vision test include a glasses frame 1, glasses frames 2 and glasses legs 3, the glasses legs 3 are provided with two, respectively installed at both ends of the glasses frame 1, and the glasses frames 2 include a left glasses frame 2 and a right glasses frame 2 which are symmetrical about the center of the glasses frame 1. In order to facilitate understanding of the technical scheme of the application, the side of the glasses close to the face of the wearer is defined as the inner side of the glasses, the side far away from the face of the wearer is defined as the outer side of the glasses, and the inner side and the outer side of the glasses are consistent with the inner side and the outer side directions of the glasses frame 1, the glasses frame 2 and the glasses legs 3.

Referring to fig. 1 and 2, the glasses frame 1 includes a first bracket 11 and a second bracket 12, two first fixing pieces 111 are fixedly installed at one end of the first bracket 11, the two first fixing pieces 111 are arranged at intervals along the height direction of the first bracket 11, a second fixing piece 121 is fixedly installed at one end of the second bracket 12, the second fixing piece 121 is located at the middle position of the end portion of the second bracket 12, the second fixing piece 121 is inserted between the two first fixing pieces 111, a first connecting column is fixedly installed on the first fixing piece 111 located below, the second fixing piece 121 is sleeved on the first connecting column and is rotatably connected with the first fixing piece 111 located below, after the angles of the first bracket 11 and the second bracket 12 are adjusted, the first bracket 11 and the second bracket 12 are fixed through a first fixing mechanism 4, and the glasses frame is convenient to wear. In addition, the inner side walls of the first support 11 and the second support 12 are both fixedly provided with a blocking piece 13, the blocking piece 13 is close to the center of the glasses frame 1, and the blocking piece 13 is made of sponge or silica gel, so that the wearing comfort of a wearer can be improved. The first fixing mechanism 4 comprises a first positioning plate 41, a second positioning plate 42 and a first driving column 43, wherein a first fixing sheet 111 positioned above is provided with a first movable hole 44, one side of the first movable hole 44 is formed with a first convex groove, a first placing groove 45 is arranged below the first movable hole 44, the diameter of the first placing groove 45 is larger than the aperture of the first movable hole 44, the first driving column 43 passes through the first movable hole 44 and is inserted into the first placing groove 45, the first positioning plate 41 is fixedly arranged at the lower end of the first driving column 43, the first driving column 43 is sleeved with a first positioning spring 46, two ends of the first positioning spring 46 are respectively fixedly connected with the groove top of the first placing groove 45 and the upper end face of the first positioning plate 41, the second positioning plate 42 is fixedly arranged at the upper end of the first connecting column and is in rotating fit with the upper end face of the second fixing sheet 121, the first driving column 43 is in sliding fit with the first movable hole 44, under the restriction of the first convex groove, the first driving column 43 cannot rotate in the horizontal direction and can only vertically move along the height direction of the first movable hole 44, an annular first sawtooth groove 47 is formed on each of the opposite sides of the first positioning disk 41 and the second positioning disk 42, and the two first sawtooth grooves 47 are clamped under the action of the first positioning spring 46. When the angle between the first support 11 and the second support 12 needs to be adjusted, the first driving column 43 is pulled upwards to drive the first positioning plate 41 to move towards the direction far away from the second positioning plate 42, so that the first positioning spring 46 is compressed, the two first sawtooth grooves 47 are disengaged, the first support 11 and the second support 12 are rotated, after the spectacle frame 1 is adjusted to form a proper angle, the first driving column 43 is loosened, so that the first driving column 43 drives the first positioning plate 41 to be clamped with the second positioning plate 42 under the action of the first positioning spring 46, the first support 11 and the second support 12 are fixedly positioned, the first support 11 and the second support 12 cannot rotate relatively, the spectacle frame 1 is fixed, and wearing is facilitated.

Referring to fig. 3 and 4, the spectacle frame 1 is connected to the rim 2 by the attachment mechanism 5, the left rim 2 is attached to the first bracket 11, and the right rim 2 is attached to the second bracket 12. The outer side surfaces of the first support 11 and the second support 12 are provided with a strip-shaped groove 14, the section of the strip-shaped groove 14 is trapezoidal, the strip-shaped groove 14 is arranged along the length direction of the first support 11 and the second support 12, the mounting mechanism 5 comprises a screw 51, a threaded seat 52, a first bevel gear 53, a second bevel gear 54 and mounting columns 55, the screw 51 is horizontally arranged and rotatably connected in the strip-shaped groove 14, the threaded seat 52 is in threaded connection with the screw 51, the spectacle frame 2 is fixedly connected with one side of the corresponding threaded seat 52, the first bevel gear 53 is fixed in the direction of the two screws 51 which is deviated from the mounting columns, the two mounting columns 55 are vertically arranged, the lower ends of the two mounting columns 55 respectively penetrate through the first support 11 and the second support 12 and extend into the corresponding strip-shaped groove 14, the two mounting columns 55 are respectively in rotating fit with the first support 11 and the second support 12, the second bevel gear 54 is fixedly mounted at the lower ends of the mounting columns 55, and the first bevel gear 53 and the second bevel gear 54 located in the same groove 14 are engaged with each other. Through installation mechanism 5, not only can install picture frame 2, can also be through rotating erection column 55 for second bevel gear 54 of erection column 55 lower extreme drives first bevel gear 53 and rotates, and then makes lead screw 51 rotate, drives screw base 52 and removes along spectacle frame 1's length direction, and two lead screws 51 can be adjusted two picture frames 2 respectively, are convenient for adjust picture frame 2, make picture frame 2 and wearer's interpupillary distance looks adaptation. To facilitate adjustment of the frame 2, two mounting posts 55 are mounted near the ends of the first and

second supports

11, 12 facing away from each other. The outer side walls of the first bracket 11 and the second bracket 12 are provided with scale strips 15, and the length direction of the scale strips 15 is consistent with the length direction of the first bracket 11 or the second bracket 12. Be fixed with pointer 521 on screw base 52, pointer 521 and the lateral wall sliding fit of first support 11 and second support 12, when driving screw base 52 through lead screw 51 and remove, can drive pointer 521 and remove along scale 15, and then can the position of two picture frames 2 of accurate regulation, further improve visual detection's accuracy.

Referring to fig. 1 and 4, a temple 3 is connected with an eyeglass frame 1 through a second fixing mechanism 6, the second fixing mechanism 6 comprises a third positioning plate 61, a fourth positioning plate 62 and a second driving column 63, two first connecting pieces 16 are fixedly installed at two ends of the eyeglass frame 1, the two first connecting pieces 16 are arranged at intervals along the thickness direction of the eyeglass frame 1, one end of the temple 3 is fixedly installed with a second connecting piece 17, the second connecting piece 17 is located in the middle of the end of the temple 3, the second connecting piece 17 is located between the two first connecting pieces 16, a second connecting column is fixed on the first connecting piece 16 located below, the second connecting piece 17 is sleeved on the second connecting column and is in rotating fit with the second connecting column, a second moving hole 64 is formed on the first connecting piece 16 located above, a second convex groove is formed on one side of the second moving hole 64, a second placing groove 65 is formed below the second moving hole 64, the diameter of the second placing groove 65 is larger than the aperture of the second movable hole 64, the second driving column 63 passes through the second movable hole 64 and is inserted into the second placing groove 65, the third positioning plate 61 is fixedly installed at the lower end of the second driving column 63, the second driving column 63 is sleeved with a second positioning spring 66, two ends of the second positioning spring 66 are respectively and fixedly connected with the groove top of the second placing groove 65 and the upper end face of the third positioning plate 61, the fourth positioning plate 62 is fixedly installed at the upper end of the second connecting column and is in rotating fit with the upper end face of the second connecting sheet 17, the second driving column 63 is in sliding fit with the second movable hole 64, under the restriction of the second convex groove, the second driving column 63 cannot rotate in the horizontal direction and can only vertically move along the height direction of the second movable hole 64, an annular second sawtooth groove 67 is formed at one opposite side of the third positioning plate 61 and the fourth positioning plate 62, under the action of the second positioning spring 66, the two second sawtooth grooves 67 are clamped. When the angle between mirror leg 3 and spectacle frame 1 needs to be adjusted, through upwards pulling up second drive post 63, drive third positioning disk 61 and move to the direction of keeping away from fourth positioning disk 62, make second positioning spring 66 compressed, two second sawtooth grooves 67 break away from the meshing, rotate mirror leg 3 and spectacle frame 1, adjust mirror leg 3 to suitable angle after, loosen second drive post 63, make second drive post 63 under the effect of second positioning spring 66, drive third positioning disk 61 and fourth positioning disk 62 joint, and then carry out fixed positioning to mirror leg 3 and spectacle frame 1, make the junction of mirror leg 3 and spectacle frame 1 can not rotate relatively, conveniently adapt to the person's of wearing face type.

Referring to fig. 5 and 6, the temple 3 includes a first leg 31 and a second leg 32, the first leg 31 includes a first supporting rod 311 and a second supporting rod 312, one end of the first supporting rod 311 is connected with the spectacle frame 1, and the second supporting rod 312 is hinged to the inner side of the first supporting rod 311, so that the temple 3 can be conveniently stored by folding the second supporting rod 312 towards the inner side of the spectacle frame 1. The first leg 31 and the second leg 32 are connected by the adjustment mechanism 7. The adjusting mechanism 7 includes a fixing seat 71 and a positioning portion 72, the fixing seat 71 is fixedly mounted on the outer side of the second supporting rod 312 and close to the position of the second supporting leg 32, the positioning portion 72 is hinged to the fixing seat 71, and a torsion spring is disposed at the rotational connection position of the positioning portion 72 and the fixing seat 71. Specifically, an accommodating groove 313 is formed at an end of the second support bar 312 away from the first support bar 311, the accommodating groove 313 is disposed along a length direction of the second support bar 312, a through groove 314 is formed on an outer side wall of the second support bar 312, the through groove 314 is communicated with the accommodating groove 313, an end portion of the second support leg 32 is inserted into the accommodating groove 313, and a transverse groove is formed on an outer side wall of the second support leg 32, an oblique groove 321 is formed in the transverse groove, the oblique groove 321 is disposed along a length direction of the second support leg 32, an oblique tooth of the oblique groove 321 faces a groove wall of the accommodating groove 313 away from an inner side of the first support leg 31, the fixing seat 71 is located at a side of the through groove 314 away from the second support leg 32, the positioning portion 72 includes a positioning plate 721 and a positioning block 722, the positioning plate 721 is hinged to the fixing seat 71, the positioning block 722 is fixedly mounted at one side of the positioning plate 721 and inserted into the oblique groove 314, an included angle between 95 degrees and 160 degrees between the positioning block 722 and a side of the positioning plate 721 close to the first support leg 31, specifically, the included angle is set to be 120 degrees, an inclined surface is formed on one side of the positioning block 722, which is matched with the inclined tooth slot 321, the inclined surface of the positioning block 722 faces the groove wall of the accommodating groove 313, which is close to the inner side of the first leg 31, and the inclined teeth of the inclined tooth slot 321 are matched with the inclined surface of the positioning part 72. When one side of the positioning plate 721, which is far away from the second leg 32, is pressed, the positioning block 722 can be separated from the inclined tooth groove 321 to be clamped, the positioning block 722 is located in the through groove 314, the first leg 31 and the second leg 32 can move relatively, the total length of the first leg 31 and the second leg 32 is adjusted to a proper position, and then the pressing of the positioning plate 721 is released, so that the positioning block 722 is clamped with the inclined tooth groove 321 under the action of the torsion spring. In order to improve wearing comfort, the blocking piece 13 is fixedly installed on the inner side of the second supporting leg 32, the blocking piece 13 is made of sponge or a silica gel pad, one end of the blocking piece 13 extends to the position coinciding with the inner side of the first supporting leg 31, and when the total length of the first supporting leg 31 and the second supporting leg 32 is adjusted, the blocking piece 13 can be attached to the face of a wearer in a large scale, and comfort of the glasses legs 3 is improved.

Referring to fig. 6 and 7, the frame 2 is circular ring shaped, the lens groove 21 is installed in the outside of the frame 2, the upper end of the lens groove 21 is open, so that the lens can be conveniently inserted into the lens groove 21, the arc-shaped elastic pieces 22 are fixedly installed on the two sides of the lens groove 21, the arc-shaped pieces on the two sides of the lens groove 21 are mutually far away from the bending direction, the lens can be conveniently clamped, and the installation stability of the lens is improved. All install shading mechanism 8 on two picture frames 2, when needing the monocular to look at the detection eyesight, can quick adjustment, carry out the shading to picture frame 2. The shading mechanism 8 comprises a shading sheet group 81, a limiting component 82 and a driving component 83, the limiting component 82 is installed on the outer side of the lens frame 2, the shading sheet group 81 and the driving component 83 are both installed on the limiting component 82, and the driving component 83 drives the shading sheet group 81 to open or close, so that the lens frame 2 is shaded.

Referring to fig. 6 and 7, the limiting assembly 82 includes a limiting ring, the limiting ring is fixedly mounted in the outer side of the lens groove 21, the outer diameter of the limiting ring is larger than the outer diameter of the lens frame 2, it is convenient to limit the lens, the lens is more stably mounted, the limiting groove 821 is formed in the outer side surface of the limiting ring, the limiting groove 821 is uniformly distributed along the circumferential direction of the limiting ring, and the extending direction of the limiting groove 821 is located through the center of the limiting ring. The limiting groove 821 is a trapezoidal groove. The shading sheet group 81 comprises a plurality of sector plates 811 spliced into a circular plate shape, the tips of the sector plates 811 face the center of the limiting ring, a limiting block 812 is fixedly mounted on one side, close to the limiting ring, of the sector plates 811, the limiting block 812 is connected in the limiting groove 821 in a sliding mode, the limiting block 812 is a trapezoidal block matched with the trapezoidal groove, and therefore the connection strength of the sector plates 811 and the limiting ring can be improved. A limiting column 813 is fixedly installed on one side of the sector plate 811 far away from the limiting ring, and in order to reduce the size of the shade sheet group 81, the limiting column 813 is close to the position of the circumferential surface of the sector plate 811 and is located in the arc-shaped middle part of the sector plate 811. The driving assembly 83 includes a first driving ring 831, a second driving ring 832, a connecting ring 833, the first driving ring 831 is attached to one side of the limit ring close to the lens frame 2, the second driving ring 832 is attached to one side of the limit ring far away from the lens frame 2, the connecting ring 833 is sleeved outside the limit ring and is attached to the peripheral surface of the limit ring, and the two sides of the connecting ring 833 are fixedly connected to the peripheral surfaces of the first driving ring 831 and the second driving ring 832 respectively, when external force is not used, the connecting ring 833 and the limit ring are kept immovable by friction between the two, and the connecting ring 833 and the limit ring can be driven to rotate relatively by external force. In this embodiment of the application, in order to make the structure more stable, visual acuity detection is more accurate, picture frame 2, the lens, the spacing ring, go-between 833, the center of first drive ring 831 and second drive ring 832 coincides mutually, and make the internal diameter of picture frame 2 be greater than the external diameter of lens, the spacing ring, the internal diameter of second drive ring 832 is the same with the internal diameter of picture frame 2, be convenient for improve the area of watching through the lens, the internal diameter of first drive ring 831 is greater than the external diameter of picture frame 2, can reduce to rotate first drive ring 831 time and take place to interfere with the lens. By rotating the connecting ring 833, the first driving ring 831 and the second driving ring 832 can be driven to rotate around the center of the limit ring as a rotation center, and the sector plates 811 are driven to open or close. The second driving ring 832 is provided with a plurality of arc-shaped grooves 834, the arc-shaped grooves 834 are arranged in one-to-one correspondence with the limiting grooves 821, one end of the arc-shaped groove 834 is close to the inner side of the second driving ring 832, the other end of the arc-shaped groove 834 is gradually bent towards the direction far away from the inner side of the second driving ring 832, and the limiting column 813 is inserted in the arc-shaped groove 834 and is in sliding fit with the arc-shaped groove 834.

The working principle of the embodiment of the application is as follows: when looking at detection eyesight through the monocular in needs, go-between 833 through forward rotation, can drive spacing post 813 through arc wall 834 and be close to the inboard of spacing ring gradually, sector plate 811 draws close to the center of spacing ring along spacing groove 821, and then make a plurality of sector plates 811 draw close to the center of spacing ring in step, a plurality of sector plates 811 merge into a plectane, the external diameter of plectane is greater than the internal diameter of spacing ring, effectively shelter from mirror frame 2, at this moment, stopper 812 is located the tip that spacing groove 821 is close to the spacing ring inside wall, two limits of adjacent sector plate 811 laminate each other.

When the connecting ring 833 is rotated reversely, the arc-shaped groove 834 drives the limiting column 813 to move towards the direction away from the inner side of the limiting ring gradually, and further synchronously drives the plurality of fan-shaped plates 811 to be away from the center of the limiting ring along the limiting groove 821, the limiting block 812 and the limiting groove 821 both have certain friction force, when the connecting ring 833 is not rotated, the relative positions of the fan-shaped plates 811 and the limiting ring do not deviate, when the limiting block 812 reaches the end part of the limiting groove 821 close to the circumferential surface of the limiting ring, the tip of the fan-shaped plates 811 is aligned with the inner side of the limiting ring, and the visual detection is not influenced.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can substitute or change the technical solution and its concept of the present application within the technical scope disclosed in the present application, and shall be covered by the scope of the present application.

Claims

1. Glasses for ophthalmic vision testing comprise a glasses frame (1), a glasses frame (2) and glasses legs (3), and are characterized in that a shading mechanism (8) is arranged on the glasses frame (2); the shading mechanism (8) comprises a shading sheet group (81), a limiting component (82) and a driving component (83);

the limiting component (82) is arranged on the mirror frame (2); the shading sheet group (81) and the driving component (83) are arranged on the limiting component (82); the driving component (83) drives the shading sheet group (81) to open or close.

2. An ophthalmic vision test spectacle according to claim 1, characterized in that the stop assembly (82) comprises a stop ring arranged on one side of the frame (2);

the limiting ring is provided with a plurality of limiting grooves (821), and the limiting grooves (821) are uniformly distributed along the circumferential direction of the limiting ring.

3. An ophthalmic vision test spectacles according to claim 2, wherein said set of shutter plates (81) comprises a plurality of sector plates (811) spliced into a disc shape; a limiting block (812) is arranged on the sector plate (811); the limiting block (812) is arranged in the limiting groove (821) in a sliding mode.

4. A spectacle apparatus for ophthalmic vision testing as claimed in claim 3, wherein said drive assembly (83) comprises a first drive ring (831) disposed on one side of the stop ring, a second drive ring (832) disposed on the other side of the stop ring, a connecting ring (833) connecting the first drive ring (831) and the second drive ring (832);

the connecting ring (833) is in circumferential rotation fit with the limiting ring; a plurality of arc-shaped grooves (834) are formed in the second driving ring (832); the arc-shaped grooves (834) and the limiting grooves (821) are arranged in a one-to-one correspondence manner;

a limiting column (813) is arranged at the position, close to the outer side, of the fan-shaped plate (811); the limiting column (813) is in sliding fit with the arc-shaped groove (834).

5. Spectacles for ophthalmic vision testing according to claim 1, characterized in that the spectacle frame (1) comprises a first (11) and a second (12) frame hinged to each other in the middle;

the first support (11) and the second support (12) are fixed through a first fixing mechanism (4).

6. An ophthalmic vision test spectacles according to claim 5, wherein the first fixing means (4) comprise a first positioning plate (41) arranged on the first support (11), a second positioning plate (42) arranged on the second support (12), a first driving column (43) arranged on the first positioning plate (41);

the first driving column (43) is inserted into the first bracket (11) and is in sliding fit with the first bracket (11); a first positioning spring (46) is sleeved on the first driving column (43); two ends of the first positioning spring (46) are respectively fixedly connected with the first bracket (11) and the first positioning disc (41);

one sides of the first positioning disc (41) and the second positioning disc (42) which are opposite to each other are provided with an annular first sawtooth groove (47); the two first sawtooth grooves (47) are clamped.

7. Spectacles for ophthalmic vision testing according to claim 1, characterized in that the temple (3) is connected to the spectacle frame (1) by means of a second fixing mechanism (6); the second fixing mechanism (6) comprises a third positioning plate (61) arranged at the end part of the spectacle frame (1), a fourth positioning plate (62) arranged at the end part of the spectacle leg (3) and a second driving column (63) arranged on the third positioning plate (61);

the second driving column (63) is inserted into the end part of the spectacle frame (1) and is in sliding fit with the spectacle frame (1); a second positioning spring (66) is sleeved on the second driving column (63); two ends of the second positioning spring (66) are respectively and fixedly connected with the spectacle frame (1) and the third positioning plate (61);

one opposite sides of the third positioning disc (61) and the fourth positioning disc (62) are provided with an annular second sawtooth groove (67); the two second sawtooth grooves (67) are clamped.

8. Spectacles for ophthalmic vision testing according to claim 1, wherein the temple (3) comprises a first leg (31) connected to the spectacle frame (1), a second leg (32) inserted in the first leg (31) and sliding fitted to the first leg (31);

the first leg (31) and the second leg (32) are connected by an adjusting mechanism (7).

9. An ophthalmic vision test spectacles according to claim 8, wherein the end of the first leg (31) is provided with a receiving groove (313); the end part of the second supporting leg (32) is inserted into the accommodating groove (313); a through groove (314) communicated with the accommodating groove (313) is formed in one side of the first support leg (31);

the adjusting mechanism (7) comprises a fixed seat (71) fixed on the first supporting leg (31) and a positioning part (72) hinged on the fixed seat (71);

the second supporting leg (32) is provided with an oblique tooth groove (321); one end of the positioning part (72) penetrates through the through groove (314) and is inserted into the oblique tooth groove (321); the end part of the positioning part (72) inserted in the oblique tooth groove (321) is provided with an oblique surface; the inclined direction of the inclined plane faces towards the inner side of the glasses legs (3); the oblique direction of the oblique tooth groove (321) is matched with the oblique plane of the positioning part (72).

10. A spectacle apparatus for ophthalmic vision testing as claimed in claim 8, characterized in that the inner side of said second leg (32) is provided with a stop (13); one end of the baffle plate (13) extends to a position which is overlapped with the inner side of the first supporting leg (31).