Head-mounted magnifier

Abstract

The invention discloses a head-mounted magnifier, and relates to the technical field of magnifiers, the head-mounted magnifier comprises a connecting band, one end of the connecting band is provided with a contraction band, and the width of the contraction band is smaller than that of the connecting band; the fixing plate is connected to one end, far away from the contraction band, of the connecting band; the end, away from the connecting belt, of the contraction belt is located in the first shell, and a connecting shell is fixedly connected to one side of the first shell; the locking assembly is located in the first shell body; a lifting assembly and a transverse moving assembly; and the lens is arranged below the lifting assembly and the transverse moving assembly. In the invention, in the use process of people, the pupil distances and the head circumferences of different users are different, and the pupil distances and the head circumferences cannot be adjusted, so that when different people use the magnifying lens, the magnifying lens cannot be used for watching clearly, and the head wearing is not firm.

Description

Technical Field

[0001] The present invention relates to the technical field of magnifying glasses, and particularly to a head-mounted magnifying glass. Background Art

[0002] A magnifying glass is a simple visual optical device used to observe minute details of an object, and is a converging lens with a focal length much smaller than the near point of the human eye. The size of the image formed on the human retina by an object is proportional to the angle subtended by the object at the eye (viewing angle). A magnifying glass usually consists of a convex lens, a frame, and a handle. When in use, the object is placed near (within the focal length) behind the lens, and an upright magnified virtual image can be seen, which helps to distinguish details and is often used to view specimens, drawings, negatives, photos, movie copies, etc.

[0003] After retrieval, a Chinese utility model patent with the publication number CN201278047Y discloses a head-mounted magnifying glass, which is characterized in that it includes a headband, a bracket fixed in front of the headband, a folding bracket hinged to the bracket, and a magnifying glass hinged to the folding bracket through a lens handle.

[0004] This utility model enables a person using a magnifying glass to clearly, conveniently and flexibly use the magnifying glass without having to hold it by hand when in use, saving time and improving work efficiency in many occasions where quick observation conclusions and records are needed.

[0005] Upon further retrieval, a Chinese utility model patent with the publication number CN2503506Y discloses a head-mounted magnifying glass, which mainly consists of a fixed seat, two hoop pieces, a magnifying lens, and a light-emitting body. One side of the positioning end of the two hoop pieces has a convex stripe, and one side of the inner side of the two end faces of the fixed seat has a long hole with several concave and convex stripes arranged alternately. The positioning end of the two hoop pieces is located in the long hole, and its convex stripe is stuck in the concave stripe between the two convex stripes in the long hole; the top end of the magnifying lens has a tenon, and the bottom end of the fixed seat is pivotally provided with a clamping groove with convex stripes on both sides to clamp the tenon at the top end of the magnifying lens; the bottom end of the clamping seat of the light-emitting body has a spherical part, and the top end of the fixed seat has a concave circular part, and the two are in a universal pivoting relationship, and the clamping seat elastically clamps the light-emitting body, achieving the effect of convenient removal and wearing by means of its hair hoop type adjustable type, and not being unable to clamp or break due to elastic fatigue. The light-emitting body can be separately removed and used as a flashlight, and uses an LED and a lithium battery, with a light weight, a long lighting time, no pollution, and an environmental protection function.

[0006] Based on the comprehensive prior art, it is found that the above patents still have the following deficiencies: during the use by people, since the interpupillary distances and head circumferences of different users are different, and the above patents cannot adjust the interpupillary distance and head circumference, when different people use them, there will be a situation where they cannot use the magnifying glass to view clearly and the head-mounted magnifying glass will not be firmly worn. Therefore, there is an urgent need for a head-mounted magnifying glass to solve the above problems. Summary of the Invention

[0007] The object of the present invention is to solve the deficiencies existing in the prior art, and a head-mounted magnifying glass is proposed. Its advantages are that the interpupillary distance between the lenses can be adjusted before people wear it, which meets the usage requirements of different people, and during the wearing process of people, by adjusting the contraction band, it is ensured that the magnifying glass can be firmly fixed on people's heads, avoiding the situation of loosening and falling off when people use it.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A head-mounted magnifying glass, comprising: a connecting band, one end of the connecting band is provided with a contraction band, and the width of the contraction band is smaller than the width of the connecting band;

[0010] A fixing plate, the fixing plate is connected to the end of the connecting band away from the contraction band;

[0011] A first housing, one end of the contraction band away from the connecting band is located inside the first housing, and one side of the first housing is fixedly connected with a connecting shell;

[0012] A locking assembly, the locking assembly is located inside the first housing;

[0013] A lifting assembly, a transverse movement assembly;

[0014] A lens, the lens is arranged below the lifting assembly and the transverse movement assembly.

[0015] Through the above technical solutions: before people wear it, the interpupillary distance between the lenses can be adjusted, which meets the usage requirements of different people, and during the wearing process of people, by adjusting the contraction band, it is ensured that the magnifying glass can be firmly fixed on people's heads, avoiding the situation of loosening and falling off when people use it.

[0016] The present invention is further arranged such that the lifting assembly includes a second housing fixedly connected to the outer wall of one side of the fixing plate, a first threaded lead screw is rotatably connected to the bottom inner wall of the second housing, a second threaded sleeve is engaged with the circumferential outer wall of the first threaded lead screw, a transverse plate is fixedly connected to one side outer wall of the second threaded sleeve, a connecting column is fixedly connected to the bottom of the transverse plate, and one end of the connecting column passes through the bottom of the second housing.

[0017] Through the above technical solutions: during the rotation of the threaded lead screw, the second threaded sleeve engaged with its outer wall can drive the transverse plate and the connecting column to move up and down, so as to be able to adjust the height of the lens.

[0018] The present invention is further configured such that a guide rod is fixedly connected to the bottom of the second housing. A guide cylinder is sleeved on the circumferential outer wall of the guide rod. One end of the cross plate away from the second threaded sleeve is fixedly connected to the outer wall of one side of the guide cylinder.

[0019] Through the above technical solutions, it can play a good limiting and guiding role in the lifting operation of the second threaded sleeve.

[0020] The present invention is further configured such that a second protective pad is adhered to the outer wall of one side of the fixing plate, and a first protective pad is adhered to the outer wall of one side of the first housing.

[0021] Through the above technical solutions, it can improve the comfort of people when wearing.

[0022] The present invention is further configured such that through grooves are formed on the outer walls of both sides of the first housing, and one end of the contraction band passes through the inside of the through groove.

[0023] Through the above technical solutions, it can ensure the stability of the contraction band during the contraction process and play a good guiding role.

[0024] The present invention is further configured such that a fixing frame is fixedly connected to the bottom end of the connecting column. A threaded hole is formed on the outer wall of one side of the fixing frame. A threaded rod is threadedly connected to the inside of the threaded hole. A third housing is arranged below the fixing frame. One end of the threaded rod is fixedly connected to a rotating rod. One end of the rotating rod is fixedly connected to the outer wall of one side of the third housing. A limiting piece is fixedly connected to the circumferential outer wall of the rotating rod. One side outer wall of the limiting piece is closely attached to the inner wall of one side of the fixing frame. A turning handle is fixedly connected to the end of the threaded rod away from the limiting piece.

[0025] Through the above technical solutions, when people do not need to use the magnifying glass, they only need to turn the turning handle to drive the threaded rod to rotate, thereby being able to complete the mirror flipping work.

[0026] The present invention is further configured such that the lateral movement assembly includes a second threaded lead screw rotatably connected to the inner wall of one side of the third housing. A first threaded sleeve is engaged with the circumferential outer wall of the second threaded lead screw. A vertical rod is fixedly connected to the bottom of the first threaded sleeve. A circular frame is fixedly connected to the bottom end of the vertical rod. The lens is fixedly connected to the inside of the circular frame. One end of the second threaded lead screw extends to the outside of the third housing. A second rotating block is fixedly connected to one end of the second threaded lead screw.

[0027] Through the above technical solutions, it can adjust the distance between the two groups of lenses, meet the different pupil distance requirements of people, and expand the applicable range of the magnifying glass.

[0028] The present invention is further configured such that a rectangular groove is formed at the bottom of the third housing, and one end of the vertical rod passes through the inside of the rectangular groove.

[0029] Through the above technical solutions, it can play a good limiting and guiding role in the lateral movement of the vertical rod, ensuring that the vertical rod can stably perform lateral movement.

[0030] The present invention is further configured such that the locking assembly includes a winding roller rotatably connected to the inner wall of the bottom of the first housing. One end of the contraction belt is fixedly connected to the circumferential outer wall of the winding roller. A second rotating column is fixedly connected to the top outer wall of the winding roller. A driven gear is fixedly connected to the circumferential outer wall of the second rotating column. The driven gear meshes with a driving gear. A first rotating column is fixedly connected to the circumferential inner wall of the driving gear. One end of the first rotating column passes through the top of the first housing, and a first rotating block is fixedly connected to the top of the first rotating column.

[0031] Through the above technical solutions, during the rotation of the winding roller, the contraction belt fixed to its outer wall can be wound, thereby driving the connection belt to be tightened, ensuring that the entire device can be stably fixed on the head of people and avoiding the situation of falling off during subsequent use.

[0032] The present invention is further configured such that a disc is fixedly connected to the circumferential outer wall of the first rotating column. Tooth grooves are formed at equal intervals and circularly distributed on the circumferential outer wall of the disc. A rotating cylinder is rotatably connected to one side of the first housing. A pawl is fixedly connected to the bottom of the rotating cylinder. One end of the pawl is clamped inside the tooth groove. Springs are fixedly connected to the circumferential outer wall of the rotating cylinder at equal intervals. The ends of the springs away from the rotating cylinder are fixedly connected to the inner wall of one side of the first housing.

[0033] Through the above technical solutions, the tooth grooves formed on the outer wall of the disc can be engaged with the pawl. Therefore, self-locking can be achieved when the disc rotates. At the same time, the springs fixed to the circumferential outer wall of the rotating cylinder can ensure the strength during the self-locking of the disc.

[0034] The beneficial effects of the present invention are:

[0035] 1. A head-mounted magnifier. By setting a locking component, when people need to use the magnifier, they can first put the device on the head. Then people rotate the first rotating block. During the rotation of the first rotating block, the first rotating column can be driven to rotate. During the rotation of the first rotating column, the driving gear can be driven to rotate. During the rotation of the driving gear, the driven gear meshing on its outer wall can be rotated. During the rotation of the driven gear, the second rotating column and the winding roller can be driven to rotate together. During the rotation of the winding roller, the contraction belt fixed on its outer wall can be wound, so as to drive the connecting belt to be tightened, ensuring that the whole device can be stably fixed on people's heads and avoiding falling off during subsequent use. And during the rotation of the driving gear, the disc below it can be driven to rotate. At the same time, the ratchet groove opened on the outer wall of the disc can be engaged with the ratchet. Therefore, self-locking can be achieved when the disc rotates. At the same time, the spring fixed on the circumferential outer wall of the rotating cylinder can ensure the strength during the self-locking of the disc.

[0036] 2. A head-mounted magnifier. By setting a lifting component, then the staff can rotate the first threaded screw. During the rotation of the threaded screw, the second threaded sleeve meshing on its outer wall can drive the cross plate and the connecting column to move up and down, so as to adjust the height of the lens and meet the usage requirements of people for the lens height when wearing.

[0037] 3. A head-mounted magnifier. By setting a transverse movement component, people can rotate the second rotating block. During the rotation of the second rotating block, the second threaded screw can be driven to rotate. During the rotation of the second threaded screw, the two groups of first threaded sleeves meshing on its outer wall can move towards each other, so as to adjust the distance between the two groups of lenses and meet the different pupil distance requirements of people, expanding the applicable range of the magnifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of the overall structure of a head-mounted magnifier proposed by the present invention;

[0039] Figure 2 is a schematic diagram of the split structure of the second housing of a head-mounted magnifier proposed by the present invention;

[0040] Figure 3 is a head-mounted magnifier proposed by the present invention Figure 2 and is an enlarged schematic diagram of part A in

[0041] Figure 4 is a schematic diagram of the rear view structure of a head-mounted magnifier proposed by the present invention;

[0042] Figure 5 is a schematic diagram of the split structure of the first housing of a head-mounted magnifier diagram proposed by the present invention;

[0043] Figure 6 A head-mounted magnifying glass proposed by the present invention Figure 5 Schematic diagram of the magnification structure at B in the figure.

[0044] In the figure: 1. connecting band; 2. contraction band; 3. first housing; 4. connecting housing; 5. first rotating block; 6. first protective pad; 7. through groove; 8. fixing plate; 9. second housing; 10. fixing frame; 11. third housing; 12. lens; 13. circular frame; 14. first threaded lead screw; 15. guide rod; 16. vertical rod; 17. second rotating block; 18. second threaded lead screw; 19. first threaded sleeve; 20. turning handle; 21. threaded rod; 22. limiting piece; 23. rotating rod; 24. threaded hole; 25. cross plate; 26. connecting column; 27. second protective pad; 28. driving gear; 29. driven gear; 30. winding roller; 31. first rotating column; 32. disc; 33. pawl; 34. spring; 35. rotating cylinder; 36. ratchet tooth groove; 37. second rotating column. Detailed implementation manners

[0045] The technical solutions of this patent will be further described in detail below in conjunction with the specific implementation manners.

[0046] The embodiments of this patent will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation of this patent.

[0047] In the description of this patent, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this patent.

[0048] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "set" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0049] Refer to Figures 1-6, a head-mounted magnifying glass, comprising: a connecting strap 1, one end of the connecting strap 1 is provided with a retractable strap 2, and the width of the retractable strap 2 is smaller than the width of the connecting strap 1;

[0050] a fixing plate 8, the fixing plate 8 is connected to the end of the connecting strap 1 away from the retractable strap 2;

[0051] a first housing 3, one end of the retractable strap 2 away from the connecting strap 1 is located inside the first housing 3, and one side of the first housing 3 is fixedly connected to a connecting shell 4;

[0052] a locking assembly, the locking assembly is located inside the first housing 3;

[0053] a lifting assembly and a transverse movement assembly;

[0054] a lens 12, the lens 12 is arranged below the lifting assembly and the transverse movement assembly. Before people wear it, the interpupillary distance between the lenses 12 can be adjusted to meet the usage requirements of different people. And during the process of people wearing it, by adjusting the retractable strap 2, it is ensured that the magnifying glass can be firmly fixed on people's heads, avoiding the situation of loosening and falling off when people use it.

[0055] Specifically, the lifting assembly includes a second housing 9 fixedly connected to the outer wall of one side of the fixing plate 8. The bottom inner wall of the second housing 9 is rotatably connected with a first threaded lead screw 14. A second threaded sleeve is engaged with the circumferential outer wall of the first threaded lead screw 14. One side outer wall of the second threaded sleeve is fixedly connected to a cross plate 25. The bottom of the cross plate 25 is fixedly connected to a connecting column 26. One end of the connecting column 26 passes through the bottom of the second housing 9. Then, the staff can rotate the first threaded lead screw 14. During the rotation of the first threaded lead screw 14, the second threaded sleeve engaged on its outer wall can drive the cross plate 25 and the connecting column 26 to move up and down, so as to adjust the height of the lens 12.

[0056] Specifically, the bottom of the second housing 9 is fixedly connected with a guide rod 15. A guide cylinder is sleeved on the circumferential outer wall of the guide rod 15. One end of the cross plate 25 away from the second threaded sleeve is fixedly connected to the outer wall of one side of the guide cylinder, which can play a good limiting and guiding role in the lifting work of the second threaded sleeve.

[0057] Specifically, a second protective pad 27 is adhered to the outer wall of one side of the fixing plate 8, and a first protective pad 6 is adhered to the outer wall of one side of the first housing 3, which can improve the comfort of people when wearing.

[0058] Specifically, through grooves 7 are formed on both outer walls of the first housing 3. One end of the retractable strap 2 passes through the inside of the through grooves 7, which can ensure the stability of the retractable strap 2 during the contraction process and play a good guiding role.

[0059] Specifically, a fixed frame 10 is fixedly connected to the bottom end of the connecting column 26. A threaded hole 24 is formed in the outer wall of one side of the fixed frame 10. A threaded rod 21 is threadedly connected inside the threaded hole 24. A third housing 11 is arranged below the fixed frame 10. One end of the threaded rod 21 is fixedly connected to a rotating rod 23. One end of the rotating rod 23 is fixedly connected to the outer wall of one side of the third housing 11. A limiting piece 22 is fixedly connected to the circumferential outer wall of the rotating rod 23. One side outer wall of the limiting piece 22 is closely attached to the inner wall of one side of the fixed frame 10. One end of the threaded rod 21 away from the limiting piece 22 is fixedly connected to a rotating handle 20. When people do not need to use the magnifying glass, they only need to rotate the rotating handle 20 to drive the threaded rod 21 to rotate, so as to complete the mirror flipping work.

[0060] Specifically, the transverse movement assembly includes a second threaded lead screw 18 rotatably connected to the inner wall of one side of the third housing 11. A first threaded sleeve 19 is engaged with the circumferential outer wall of the second threaded lead screw 18. The bottom of the first threaded sleeve 19 is fixedly connected to a vertical rod 16. The bottom end of the vertical rod 16 is fixedly connected to a circular frame 13. The lens 12 is fixedly connected inside the circular frame 13. One end of the second threaded lead screw 18 extends to the outside of the third housing 11. One end of the second threaded lead screw 18 is fixedly connected to a second rotating block 17. People can rotate the second rotating block 17. During the rotation of the second rotating block 17, the second threaded lead screw 18 can be driven to rotate. During the rotation of the second threaded lead screw 18, the two groups of first threaded sleeves 19 engaged on its outer wall can move towards each other, so as to adjust the distance between the two lenses 12, meet the different pupil distance requirements of people, and expand the applicable range of the magnifying glass.

[0061] Specifically, a rectangular groove is formed in the bottom of the third housing 11. One end of the vertical rod 16 passes through the inside of the rectangular groove, which can play a good limiting and guiding role in the transverse movement of the vertical rod 16 and ensure that the vertical rod 16 can stably perform transverse movement.

[0062] Specifically, the locking assembly includes a winding roller 30 rotatably connected to the inner wall of the bottom of the first housing 3. One end of the contraction belt 2 is fixedly connected to the circumferential outer wall of the winding roller 30. The top outer wall of the winding roller 30 is fixedly connected to a second rotating column 37. A driven gear 29 is fixedly connected to the circumference of the second rotating column 37. The driven gear 29 meshes with a driving gear 28. A first rotating column 31 is fixedly connected to the inner wall of the circumference of the driving gear 28. One end of the first rotating column 31 passes through the top of the first housing 3. A first rotating block 5 is fixedly connected to the top of the first rotating column 31. When people need to use the magnifying glass, they can first put the device on the head. Then people rotate the first rotating block 5. During the rotation of the first rotating block 5, the first rotating column 31 can be driven to rotate. During the rotation of the first rotating column 31, the driving gear 28 can be driven to rotate. During the rotation of the driving gear 28, the driven gear 29 meshing on its outer wall can be driven to rotate. During the rotation of the driven gear 29, the second rotating column 37 and the winding roller 30 can be driven to rotate together. During the rotation of the winding roller 30, the contraction belt 2 fixed on its outer wall can be wound, so that the connecting belt 1 can be tightened, ensuring that the whole device can be stably fixed on people's heads and preventing it from falling off during subsequent use.

[0063] Specifically, a disc 32 is fixedly connected to the circumferential outer wall of the first rotating column 31. Equally spaced circularly distributed ratchet grooves 36 are formed in the circumferential outer wall of the disc 32. A rotating cylinder 35 is rotatably connected to one side of the first housing 3. A ratchet 33 is fixedly connected to the bottom of the rotating cylinder 35. One end of the ratchet 33 is clamped inside the ratchet groove 36. Equally spaced springs 34 are fixedly connected to the circumferential outer wall of the rotating cylinder 35. The ends of the springs 34 away from the rotating cylinder 35 are fixedly connected to the inner wall of one side of the first housing 3. During the rotation of the driving gear 28, the disc 32 below it can be driven to rotate. At the same time, the ratchet groove 36 formed in the outer wall of the disc 32 can be engaged with the ratchet 33. Therefore, self-locking can be achieved when the disc 32 rotates. At the same time, the spring 34 fixed on the circumferential outer wall of the rotating cylinder 35 can ensure the strength of the disc 32 during self-locking.

[0064] Working principle: When people need to use a magnifying glass, they can first put the device on the head. Then, people rotate the first rotating block 5. During the rotation of the first rotating block 5, the first rotating column 31 can be driven to rotate. During the rotation of the first rotating column 31, the driving gear 28 can be driven to rotate. During the rotation of the driving gear 28, the driven gear 29 engaged on its outer wall can be rotated. During the rotation of the driven gear 29, the second rotating column 37 and the winding roller 30 can be driven to rotate together. During the rotation of the winding roller 30, the contraction belt 2 fixed on its outer wall can be wound, so that the connecting belt 1 can be tightened, ensuring that the whole device can be stably fixed on people's heads and preventing it from falling off during subsequent use. And during the rotation of the driving gear 28, the disc 32 below it can be driven to rotate. At the same time, the ratchet groove 36 formed on the outer wall of the disc 32 can be engaged with the ratchet 33. Therefore, self-locking can be achieved when the disc 32 rotates. At the same time, the spring 34 fixed on the circumferential outer wall of the rotating cylinder 35 can ensure the strength of the disc 32 during self-locking. Then, the staff can rotate the first threaded screw 14. During the rotation of the first threaded screw 14, the second threaded sleeve engaged on its outer wall can drive the cross plate 25 and the connecting column 26 to move up and down, so as to adjust the height of the lens 12. Then, people can rotate the second rotating block 17. During the rotation of the second rotating block 17, the second threaded screw 18 can be driven to rotate. During the rotation of the second threaded screw 18, the two first threaded sleeves 19 engaged on its outer wall can move towards each other, so as to adjust the distance between the two lenses 12, meeting people's different pupillary distance requirements and expanding the applicable range of this magnifying glass.

[0065] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A head-mounted magnifier, characterized in that, Comprising: A connecting belt (1), one end of the connecting belt (1) is provided with a shrinkable belt (2), and the width of the shrinkable belt (2) is smaller than the width of the connecting belt (1); A fixing plate (8), the fixing plate (8) is connected to the end of the connecting belt (1) away from the shrinkable belt (2); A first housing (3), one end of the shrinkable belt (2) away from the connecting belt (1) is located inside the first housing (3), and a connecting shell (4) is fixedly connected to one side of the first housing (3); A locking assembly, the locking assembly is located inside the first housing (3); A lifting assembly and a lateral movement assembly; A lens (12), the lens (12) is arranged below the lifting assembly and the lateral movement assembly.

2. The head-mounted magnifier according to claim 1, wherein, The lifting assembly includes a second housing (9) fixedly connected to the outer wall of one side of the fixing plate (8). A first threaded lead screw (14) is rotatably connected to the inner wall of the bottom of the second housing (9). A second threaded sleeve is engaged with the circumferential outer wall of the first threaded lead screw (14). A cross plate (25) is fixedly connected to the outer wall of one side of the second threaded sleeve. A connecting column (26) is fixedly connected to the bottom of the cross plate (25), and one end of the connecting column (26) passes through the bottom of the second housing (9).

3. The head-mounted magnifying glass according to claim 2, characterized in that, A guide rod (15) is fixedly connected to the bottom of the second housing (9). A guide tube is sleeved on the circumferential outer wall of the guide rod (15). One end of the cross plate (25) away from the second threaded sleeve is fixedly connected to the outer wall of one side of the guide tube.

4. The head-mounted magnifier according to claim 3, characterized in that, A second protective pad (27) is adhered to the outer wall of one side of the fixing plate (8), and a first protective pad (6) is adhered to the outer wall of one side of the first housing (3).

5. The head-mounted magnifier according to claim 4, characterized in that, Through grooves (7) are formed in the outer walls on both sides of the first housing (3), and one end of the shrinkable belt (2) passes through the inside of the through grooves (7).

6. The head-mounted magnifier according to claim 5, characterized in that, The bottom end of the connecting column (26) is fixedly connected to a fixing frame (10). A threaded hole (24) is formed in the outer wall of one side of the fixing frame (10). A threaded rod (21) is threadedly connected to the inside of the threaded hole (24). A third housing (11) is arranged below the fixing frame (10). One end of the threaded rod (21) is fixedly connected to a rotating rod (23). One end of the rotating rod (23) is fixedly connected to the outer wall of one side of the third housing (11). A limiting piece (22) is fixedly connected to the circumferential outer wall of the rotating rod (23). One side outer wall of the limiting piece (22) is closely attached to the inner wall of one side of the fixing frame (10). A turning handle (20) is fixedly connected to the end of the threaded rod (21) away from the limiting piece (22).

7. The head-mounted magnifier according to claim 6, characterized in that, The lateral translation component includes a second threaded lead screw (18) rotatably connected to the inner wall of one side of the third housing (11). A first threaded sleeve (19) is engaged with the circumferential outer wall of the second threaded lead screw (18). A vertical rod (16) is fixedly connected to the bottom of the first threaded sleeve (19). The bottom end of the vertical rod (16) is fixedly connected to a circular frame (13). The lens (12) is fixedly connected to the inside of the circular frame (13). One end of the second threaded lead screw (18) extends to the outside of the third housing (11), and a second rotating block (17) is fixedly connected to one end of the second threaded lead screw (18).

8. The head-mounted magnifier according to claim 7, characterized in that, A rectangular groove is formed in the bottom of the third housing (11), and one end of the vertical rod (16) passes through the inside of the rectangular groove.

9. The head-mounted magnifier according to claim 8, wherein, The locking component includes a winding roller (30) rotatably connected to the inner wall of the bottom of the first housing (3). One end of the shrinkage belt (2) is fixedly connected to the circumferential outer wall of the winding roller (30). A second rotating column (37) is fixedly connected to the top outer wall of the winding roller (30). A driven gear (29) is fixedly connected to the circumference of the second rotating column (37). The driven gear (29) is engaged with a driving gear (28). A first rotating column (31) is fixedly connected to the circumferential inner wall of the driving gear (28). One end of the first rotating column (31) passes through the top of the first housing (3), and a first rotating block (5) is fixedly connected to the top of the first rotating column (31).

10. The head-mounted magnifying glass according to claim 9, wherein, A disc (32) is fixedly connected to the circumferential outer wall of the first rotating column (31). Tooth grooves (36) are formed at equal distances and circularly on the circumferential outer wall of the disc (32). A rotating cylinder (35) is rotatably connected to one side of the first housing (3). A pawl (33) is fixedly connected to the bottom of the rotating cylinder (35). One end of the pawl (33) is clamped inside the tooth groove (36). Springs (34) are fixedly connected to the circumferential outer wall of the rotating cylinder (35) at equal distances. One end of the spring (34) away from the rotating cylinder (35) is fixedly connected to the inner wall of one side of the first housing (3).

Images