Projection equipment with adjustable contour lines

Abstract

The present invention relates to the field of medical equipment, and provides a projection device with adjustable contour lines. The projection device includes a bracket, an adjustment device, and a projection device. The bracket includes a bracket body and a support rod that can be lifted and lowered on the bracket body; the adjustment device includes a base arranged on the top of the support rod, the top of the base is rotatably provided with a first swivel, the side of the first swivel is extended with a first bracket, the end of the first bracket is rotatably provided with a second swivel, the second bracket is penetrated by the second swivel, the second bracket is rotatably provided with a third swivel, and the third swivel is connected to a mounting bracket; the projection device is used to generate grating stripes and cross lines, and the projection device is arranged on the mounting bracket. The present application sets up the projection device on the adjustment device, so that the projection device can rotate in all directions to meet the contour line projection requirements during surgery and follow-up in different body positions, meet the current characteristics of precise and personalized medical care, and has the advantages of simple operation and strong practicality.

Description

Technical Field

[0001] The invention relates to the field of medical equipment, and in particular to a projection device with adjustable contour lines. Background Art

[0002] Since the widespread application of 3D human body imaging equipment in face recognition and plastic surgery, people have focused on the location, length, angle, and proportional relationship of facial features, and have tried to obtain morphological and aesthetic information from the analysis of plane geometric data such as line distance, angle, and proportional relationship. However, for the complex curved contours of the human body, these plane geometric and even three-dimensional geometric data are not sufficient to describe the morphological characteristics of the human body's surface organs or contours, resulting in obvious system errors.

[0003] At present, by combining three-dimensional body surface imaging technology and non-physical grating moiré direct projection technology, it is possible to accurately capture the morphological features of the human face, trunk surface organs or contours, such as holographic coordinates, curves, surfaces, convex and concave structure correlation, etc., which can more comprehensively evaluate the morphological characteristics of the human body surface and greatly reduce system errors. However, when the projection equipment is in use, it has high requirements for the projection angle and grating position. Traditional projection equipment cannot be adjusted in all directions, so that the position and angle of the grating cannot meet the surgical needs. Therefore, a moiré projection device that can be fully adjusted in any venue, any posture, does not contact the human body, does not affect the surgical operation, is highly practical, and can be used during surgery and follow-up is urgently needed. Summary of the invention

[0004] In order to solve the above technical problem or at least partially solve the above technical problem, the present invention provides a projection device with adjustable contour lines.

[0005] The above-mentioned projection device with adjustable contour lines includes:

[0006] A bracket, comprising a bracket body and a support rod which can be lifted and lowered on the bracket body;

[0007] The adjusting device comprises a base arranged at the top of the supporting rod, a first rotating body is rotatably provided on the top of the base, a first bracket is extended from the side of the first rotating body, a second rotating body is rotatably provided at the end of the first bracket, a second bracket is passed through the second rotating body, a third rotating body is rotatably provided on the second bracket, and a mounting bracket is connected to the third rotating body;

[0008] A projection device is used to generate grating stripes and cross lines, and the projection device is arranged on the mounting bracket.

[0009] Optionally, a first rotating shaft is provided on the top of the base, the first rotating body is rotatably disposed on the first rotating shaft, a first opening is provided on one side of the first rotating body, and a first adjusting rod for adjusting a size of the first opening is passed through the first rotating body.

[0010] Optionally, a first screw hole is provided on one side of the first opening, and a first stepped hole passing through the first swivel is provided on the other side, the center lines of the first screw hole and the first stepped hole coincide, the first adjusting rod passes through the first stepped hole, and the end of the first adjusting rod is provided with a first threaded section that cooperates with the thread of the first screw hole, and the first adjusting rod is provided with a first baffle for abutting against the bottom surface of the large hole portion of the first stepped hole.

[0011] Optionally, the first bracket is arranged in a direction perpendicular to the first rotating axis, a second rotating axis is provided at the end of the first bracket, the second rotating body is rotatably arranged on the second rotating axis, a second opening is provided on one side of the second rotating body, and a second adjusting rod for adjusting the size of the second opening is passed through the second rotating body.

[0012] Optionally, the second bracket is arranged along a length direction perpendicular to the first bracket, and the second bracket includes a first support shaft and a second support shaft respectively arranged on both sides of the second opening, a second blind hole is provided in the first support shaft, a second screw hole is penetrated through the second support shaft, the center lines of the second blind hole and the second screw hole coincide, a second annular groove is provided in the second blind hole, a second annular plate rotatably arranged in the second annular groove is provided at the end of the second adjusting rod, and a second threaded section matching the second screw hole is provided on the second adjusting rod.

[0013] Optionally, a third rotating shaft is provided at the end of the first supporting shaft, the third rotating body is rotatably disposed on the third rotating shaft, a third opening is provided on one side of the third rotating body, and a third adjusting rod for adjusting the size of the third opening is passed through the third rotating body.

[0014] Optionally, a third screw hole is provided on one side of the third opening, and a third through hole is provided on the other side, the center lines of the third screw hole and the third through hole coincide, the third adjusting rod is passed through the third screw hole and the third through hole, the third adjusting rod is provided with a third threaded section matching the third screw hole, and the third adjusting rod is provided with a third baffle for abutting against the side of the third swivel.

[0015] Optionally, the mounting bracket includes:

[0016] A mounting seat, one end of which is connected to the third rotating body, and the other end of which is provided with an auxiliary plate, the third rotating body is arranged parallel to the auxiliary plate, and the auxiliary plate is rotatably arranged on the second adjusting rod;

[0017] The mounting plate is connected with the mounting seat by bolts, and the projection device is arranged on the mounting plate.

[0018] Optionally, the bracket body is a tripod bracket, and a first three-legged seat is provided on the top of the tripod bracket. The support rod is inserted into the first three-legged seat. A fourth screw hole is provided on the first three-legged seat. A screw rod is inserted into the fourth screw hole, and the end of the screw rod is supported on the outer periphery of the support rod.

[0019] Optionally, the projection device includes a projector body and a grating generator for generating a cross-line positioning grating and a vertical positioning grating.

[0020] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0021] The present application mounts the projection device on the adjustment device so that the projection device can rotate in all directions to meet the needs of contour projection during surgery and follow-up in different body positions, meet the current characteristics of precise and personalized medical care, and has the advantages of simple operation and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a projection device with adjustable contour lines in one embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of an adjustment device in one embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a bracket in one embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a projection device in use in one embodiment of the present invention;

[0026] Figure 5 is a schematic diagram of a light positioning device generating a crosshair on a face in one embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of a projection device generating uniform contour lines on a human face in one embodiment of the present invention.

[0028] Reference numerals:

[0029] 10. Bracket; 11. Support rod; 12. First three-cut seat; 13. Support leg; 14. Second three-cut seat; 15. Connecting rod; 16. Crank handle; 20. Adjustment device; 21. Base; 22. First swivel; 221. First opening; 23. Second swivel; 231. Second opening; 232. First support shaft; 233. Second support shaft; 24. Third swivel; 30. Projection device; 31. Projector body; 32. Grating generator; 33. Handle; 34. Heat dissipation hole; 35. Left camera; 36. Right camera; 40. First adjustment rod; 41. First handle; 50. Second adjustment rod; 51. Second handle; 60. Third adjustment rod; 61. Third handle; 70. Mounting seat; 71. Auxiliary plate; 72. Mounting plate; 80. First cover buckle; 81. Third cover buckle. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0031] Combination Figure 1 , Figure 2 and Figure 3 As shown, the projection device with adjustable contour lines provided in the embodiment of the present application includes a bracket 10, an adjustment device 20 and a projection device 30.

[0032] Combination Figure 1 and Figure 3 As shown, the bracket 10 includes a bracket body 10 and a support rod 11 which can be lifted and lowered on the bracket body 10. The bracket body 10 is a tripod, a first three-cut seat 12 is provided on the top of the tripod, the support rod 11 is inserted into the first three-cut seat 12, a fourth screw hole is provided on the first three-cut seat 12, a screw rod is inserted into the fourth screw hole, and the end of the screw rod is supported on the outer periphery of the support rod 11. Specifically, the tripod includes three legs 13, and the tops of the three legs 13 are hinged to the first three-cut seat 12. When adjusting, the fourth screw rod is screwed, at this time, the support rod 11 is separated from the first three-cut seat 12, and after the support rod 11 is manually adjusted to a suitable position, the fourth screw rod is screwed in the opposite direction so that the end of the fourth screw rod is against the side of the support rod 11 to complete the positioning.

[0033] Further optimized, in order to enable the support rod 11 to move in the vertical direction and increase the accuracy of the adjustment of the projection device 30, a second three-cut seat 14 for guidance can be provided on the support rod 11. Specifically, the middle parts of the three legs 13 are hinged with a connecting rod 15, and the other ends of the three connecting rods 15 are hinged with the second three-cut seat 14. Through the connecting rod 15 and the second three-cut seat 14, the expansion angle of the legs 13 can be controlled within a certain range, increasing the stability of the bracket 10 body, and at the same time, facilitating the storage of the bracket 10 and increasing the convenience of use. The second three-cut seat 14 is supported at a certain height by the connecting rod 15, and a through hole is provided in the middle part of the second three-cut seat 14, which is coaxially arranged with the support rod 11, and the support rod 11 is penetrated in the through hole. During the adjustment process, the second three-cut seat 14 can play a guiding role for the movement of the support rod 11 and increase the accuracy of the adjustment.

[0034] Further optimized, in order to increase the convenience of using the bracket 10, a crank 16 can be provided on the first three-cut seat 12. Specifically, a gear is provided at the end of the crank 16, and a tooth row is provided at the corresponding position of the support rod 11. The gear is meshed with the tooth row, and the support rod 11 is driven to move in the vertical direction through the rotation of the gear, which is convenient to use.

[0035] Among them, the three legs 13 can be extended and retracted along their own length direction, so as to increase the height of the whole device and expand the scope of use. Specifically, the legs 13 include an inner tube hinged with the first three-cut seat 12 and an outer tube slidably matched with the inner tube, and the length of the legs 13 is changed by changing the relative position of the inner tube and the outer tube. Among them, the inner tube is provided with a plurality of first through holes spaced apart along its length direction, and the outer tube is provided with a second through hole. When the second through hole is opposite to the position of one of the first through holes, a pin is inserted to complete the positioning. The length of the legs 13 can be changed by inserting the pin into different first through holes, and the structure is simple and easy to adjust.

[0036] like Figure 2 As shown, the adjustment device 20 includes a base 21 arranged on the top of the support rod 11, and a first rotating body 22 is rotatably arranged on the top of the base 21, wherein the first rotating body 22 rotates in the horizontal direction. A first bracket is extended from the side of the first rotating body 22, and a second rotating body 23 is rotatably arranged at the end of the first bracket, and the length direction of the first bracket is perpendicular to the direction of the rotation axis of the first rotating body 22, so that the rotation axis of the second rotating body 23 is perpendicular to the rotation axis of the first rotating body 22. A second bracket is passed through the second rotating body 23, and a third rotating body 24 is rotatably arranged on the second bracket, and the length direction of the second bracket is perpendicular to the length direction of the first bracket, so that the rotation axis of the third rotating body 24 is perpendicular to the rotation axis of the second rotating body 23, and a mounting bracket is connected to the third rotating body 24, and the projection device 30 is arranged on the mounting bracket, and the projection device 30 can generate grating stripes and cross lines.

[0037] like Figure 1 As shown, in some embodiments, the projection device 30 includes a projector body 31 and a grating generator 32 for generating a cross-line positioning grating and a vertical positioning grating. The grating generator 32 can emit light of any color, preferably blue light, white light, red light, green light, etc. Further optimized, a heat dissipation hole 34 is provided on the projector body 31 to dissipate the heat generated by the device and increase the service life of the device. A handle 33 is also provided on the projector body 31, and the handle 33 is fixed to the upper part of the projector body 31. When adjusting the angle of the projector body 31, the handle 33 can be held by hand to prevent the projector body 31 from falling, thereby increasing practical performance.

[0038] In some other embodiments, the projection device 30 includes a projector body 31 and a light positioning device, wherein the light positioning device is a laser generator, and the laser generator can generate a cross laser line.

[0039] The projection device 30 also includes a camera, which is connected to the projector body 31 by a telescopic line, and the camera is used to take a face picture. The camera can be divided into a left camera 35 and a right camera 36, ​​which are used for all-round shooting to obtain an ideal photo.

[0040] like Figure 4 As shown, during use, a projection device is placed at each end of the human body, the base height of the device is adjusted by a tripod, and the position of the projection device 30 is adjusted by an adjustment device 20. Specifically, as Figure 2 As shown, the projection device 30 can be driven to rotate along the Z axis by the rotation of the first rotator 22, the projection device 30 can be driven to rotate along the X axis by the rotation of the second rotator 23, and the projection device 30 can be driven to rotate along the Y axis by the rotation of the third rotator 24. The projection device 30 can be adjusted in all directions. When the horizontal lines of the crosshairs projected by the two projection devices 30 overlap at both ends of the human body, the position calibration is accurate, and then the projector generates a vertical grating. Among them, the width of the grating stripes can be set according to the needs to meet the contour lines with different height differences on the body surface. Medical staff can take photos or perform surgery according to the needs. Preferably, the height difference of the contour lines used on the face is 1mm or 2mm.

[0041] The specific usage process is as follows:

[0042] In the follow-up room or operating room, place the left projection device, the subject position, and the right projection device in sequence and in a straight line. Taking the face as an example, when the horizontal light rays generated on the left and right sides of the face overlap, the facial feature points can be used as the reference for alignment. Figure 5As shown in the figure, use the horizontal light to align the bilateral infraorbital points and tragus points, then adjust the projection height, and set the intersection of the vertical light and the perpendicular light at the tragus point. Through the above operations, the facial landmarks are relatively fixed, and the facial Frankfurt plane position is fixed, that is, the face is in a standard position. The operator can also fix the face in a standard position at other angles by specifying other facial landmarks of the light positioning crosshairs, which is convenient for standardized data management of surgery and postoperative follow-up. Figure 6 As shown, after the face is positioned using the optical positioning device, the person being collected remains still, and then the projection device 30 generates a vertical grating to produce uniform contour lines on the human face, and then medical staff can take photos or perform surgery as needed.

[0043] Taking the torso as an example, when the horizontal light rays generated on the left and right sides of the torso overlap, alignment can be performed based on the characteristic points of the torso, such as the nipple, navel, knee, hip, etc., to adjust the horizontal lines that overlap on the left and right sides. Then, the projection device 30 generates a vertical grating to generate the uniform contour lines shown on the human face, and then the medical staff can take photos or perform surgery according to the needs.

[0044] The present application mounts the projection device 30 on the adjustment device 20 so that the projection device 30 can rotate in all directions to meet the needs of contour projection during surgery and follow-up in different body positions, meet the current characteristics of precise and personalized medical care, and has the advantages of simple operation and strong practicality.

[0045] Combination Figure 1 and Figure 2 As shown, a first rotating shaft is provided on the top of the base 21, and the first rotating shaft is arranged in the vertical direction. The first rotating body 22 is rotatably arranged on the first rotating shaft. Preferably, the first rotating body 22 is disc-shaped. A first cover buckle 80 is buckled on the top of the first rotating shaft, and the position of the first rotating body 22 is limited by the first cover buckle 80 to prevent the first rotating body 22 from being separated from the first rotating shaft. A first opening 221 is provided on one side of the first rotating body 22, and a first adjusting rod 40 for adjusting the size of the first opening 221 is penetrated on the first rotating body 22. That is, the first opening 221 can be adjusted to expand or shrink by the first adjusting rod 40. When the first opening 221 is expanded, the gap between the first rotating body 22 and the first rotating shaft increases, and the first rotating body 22 rotates around the first rotating shaft; when the first opening 221 is reduced, the distance between the first rotating body 22 and the first rotating shaft decreases, so that the friction between the first rotating body 22 and the first rotating shaft increases, and the position of the first rotating body 22 is fixed.

[0046] In some embodiments, a first screw hole is provided on one side of the first opening 221, wherein the first screw hole may be a blind hole or a through hole, and a first stepped hole is provided on the other side of the first opening 221, which passes through the first swivel 22, and the center lines of the first screw hole and the first stepped hole coincide with each other, and the first adjusting rod 40 passes through the first stepped hole, and the end of the first adjusting rod 40 is provided with a first threaded section that is threadedly matched with the first screw hole, and the first adjusting rod 40 is provided with a first baffle plate for abutting against the bottom surface of the large hole portion of the first stepped hole. When in use, the end of the first adjusting rod 40 passes through the first stepped hole and is inserted into the first screw hole, and the first adjusting rod 40 is rotated, and the first threaded section gradually rotates into the first screw hole until the first baffle plate abuts against the bottom surface of the large hole portion of the first stepped hole. The first adjusting rod 40 is continuously rotated, and the first baffle plate pushes the bottom surface of the large hole portion of the first stepped hole, so that the size of the first opening 221 is reduced, and the position of the first swivel 22 is fixed. During adjustment, the first adjusting rod 40 is rotated in the opposite direction, and the first opening 221 increases under the elasticity of the first rotating body 22, so that the first adjusting rod 40 can be pushed to drive the first rotating body 22 to rotate. In order to increase the convenience of use, a first handle 41 is provided at the end of the first adjusting rod 40.

[0047] In other embodiments, the first screw hole is disposed on one side of the first opening 221, and a first blind hole is disposed on the other side of the first opening 221, the first blind hole coincides with the center line of the first screw hole, a first annular groove is disposed in the first blind hole, a first annular plate rotatably disposed in the first annular groove is disposed at the end of the first adjustment rod 40, and a first threaded section matching the first screw hole is disposed on the first adjustment rod 40. Since the first annular plate always rotates in the first annular groove, the position of the first adjustment rod 40 in its length direction remains unchanged, and as the first adjustment rod 40 rotates, the first threaded section pushes the first screw hole in the reverse direction, so that the size of the first opening 221 is reduced, and in the process of rotating the first adjustment rod 40 in the reverse direction, the first opening 221 increases.

[0048] This design is simple in structure and convenient to adjust. The adjustment and positioning of the first rotating body 22 can be achieved through the first adjusting rod 40, which simplifies the structure and increases the convenience of use. The arrangement of the first adjusting rod 40 of the present application is not limited, as long as the size of the first opening 221 can be changed by rotating the first adjusting rod 40.

[0049] The first bracket is arranged along a direction perpendicular to the first rotating shaft, and a second rotating shaft is arranged at the end of the first bracket, and the second rotating body 23 is rotatably arranged on the second rotating shaft. Preferably, the second rotating body 23 is disc-shaped. A second cover buckle is buckled at the end of the second rotating shaft, and the position of the second rotating body 23 is limited by the second cover buckle to prevent the second rotating body 23 from being separated from the second rotating shaft. A second opening 231 is arranged on one side of the second rotating body 23, and a second adjusting rod 50 for adjusting the size of the second opening 231 is penetrated on the second rotating body 23. That is, the second opening 231 can be adjusted to expand or shrink by the second adjusting rod 50. When the second opening 231 is expanded, the gap between the second rotating body 23 and the second rotating shaft increases, and the second rotating body 23 rotates around the second rotating shaft; when the second opening 231 is reduced, the distance between the second rotating body 23 and the second rotating shaft decreases, so that the friction between the second rotating body 23 and the second rotating shaft increases, and the position of the second rotating body 23 is fixed.

[0050] In some embodiments, the second bracket is arranged along a length direction perpendicular to the first bracket, and the second bracket includes a first support shaft 232 and a second support shaft 233 respectively arranged on both sides of the second opening 231, a second blind hole is arranged in the first support shaft 232, a second screw hole is penetrated on the second support shaft 233, the center lines of the second blind hole and the second screw hole coincide, a second annular groove is arranged in the second blind hole, a second annular plate is arranged rotatably in the second annular groove at the end of the second adjustment rod 50, and a second threaded section matching the second screw hole is arranged on the second adjustment rod 50. Since the second annular plate always rotates in the second annular groove, the position of the second adjustment rod 50 in its length direction remains unchanged, and as the second adjustment rod 50 rotates, the second threaded section pushes the second screw hole in the reverse direction, so that the size of the second opening 231 is reduced, and in the process of rotating the second adjustment rod 50 in the reverse direction, the second opening 231 increases. In order to increase the convenience of use, a second handle 51 is arranged at the end of the second adjustment rod 50.

[0051] In other embodiments, a second screw hole is provided in the first support shaft 232, and a second stepped hole is provided in the second support shaft 233, and the center lines of the second screw hole and the second stepped hole coincide. The second adjusting rod 50 passes through the second stepped hole, and the end of the second adjusting rod 50 is provided with a second threaded section that is threadedly matched with the second screw hole, and the second adjusting rod 50 is provided with a second baffle for abutting against the bottom surface of the large hole portion of the second stepped hole. When in use, the end of the second adjusting rod 50 passes through the second stepped hole and is inserted into the second screw hole, and the second adjusting rod 50 is rotated, and the second threaded section gradually rotates into the second screw hole until the second baffle abuts against the bottom surface of the large hole portion of the second stepped hole. The second adjusting rod 50 is continuously rotated, and the second baffle pushes the bottom surface of the large hole portion of the second stepped hole, so that the size of the second opening 231 is reduced, and the position of the second swivel 23 is fixed. When adjusting, the second adjusting rod 50 is rotated in the opposite direction, and the second opening 231 increases under the elasticity of the second swivel 23 itself, which can push the second adjusting rod 50 to drive the second swivel 23 to rotate.

[0052] This design is simple in structure and convenient to adjust. The adjustment and positioning of the second rotating body 23 can be achieved through the second adjusting rod 50, which simplifies the structure and increases the convenience of use. The second adjusting rod 50 of the present application is not limited in the arrangement mode, as long as the size of the second opening 231 can be changed by rotating the second adjusting rod 50.

[0053] A third rotating shaft is provided at the end of the first supporting shaft 232, and the third rotating shaft is arranged along the length direction of the first supporting shaft 232. The third rotating body 24 is rotatably arranged on the third rotating shaft. Preferably, the third rotating body 24 is in the shape of a cuboid. A third cover buckle 81 is buckled at the end of the third rotating shaft, and the position of the third rotating body 24 is limited by the third cover buckle 81 to prevent the third rotating body 24 from being separated from the third rotating shaft. A third opening is provided on one side of the third rotating body 24, and a third adjusting rod 60 for adjusting the size of the third opening is provided on the third rotating body 24. That is, the third opening can be adjusted to expand or contract by the third adjusting rod 60. When the third opening is expanded, the gap between the third rotating body 24 and the third rotating shaft increases, and the third rotating body 24 rotates around the third rotating shaft; when the third opening is contracted, the distance between the third rotating body 24 and the third rotating shaft decreases, so that the friction between the third rotating body 24 and the third rotating shaft increases, and the position of the third rotating body 24 is fixed.

[0054] In some embodiments, a third screw hole is provided on one side of the third opening, and a third through hole is provided on the other side, the center lines of the third screw hole and the third through hole coincide, a third adjustment rod 60 is provided through the third screw hole and the third through hole, a third threaded section matching the third screw hole is provided on the third adjustment rod 60, and a third baffle for abutting against the side of the third rotating body 24 is provided on the third adjustment rod 60. The third baffle abuts against the side provided with the third through hole, so that as the third adjustment rod 60 rotates, the third baffle is supported on the side of the third rotating body 24, thereby adjusting the third opening to expand or shrink.

[0055] In other embodiments, a third screw hole is provided on one side of the third opening, wherein the third screw hole can be a blind hole or a through hole, a third stepped hole is provided on the other side of the third opening to penetrate the third swivel 24, the center lines of the third screw hole and the third stepped hole coincide, the third adjustment rod 60 passes through the third stepped hole, and the end of the third adjustment rod 60 is provided with a third threaded section that is threadedly matched with the third screw hole, and the third adjustment rod 60 is provided with a third baffle for abutting against the bottom surface of the large hole portion of the third stepped hole. Its usage and principle are the same as those of the first adjustment rod 40 and the second adjustment rod 50, so no further description is given here. In order to increase the convenience of use, a third handle 61 can be provided at the end of the third adjustment rod 60.

[0056] In other embodiments, the third screw hole is arranged on one side of the third opening, the other side of the third opening is provided with a third blind hole, the third blind hole coincides with the center line of the third screw hole, a third annular groove is arranged in the third blind hole, a third annular plate rotatably arranged in the third annular groove is arranged at the end of the third adjustment rod 60, and a third threaded section matching the third screw hole is arranged on the third adjustment rod 60. The usage and principle are the same as those of the first adjustment rod 40 and the second adjustment rod 50, so no further description is given here.

[0057] This design is simple in structure and convenient to adjust. The adjustment and positioning of the third rotating body 24 can be achieved through the third adjusting rod 60, which simplifies the structure and increases the convenience of use. The third adjusting rod 60 of the present application is not limited in the arrangement mode, as long as the size of the third opening can be changed by rotating the third adjusting rod 60.

[0058] The mounting bracket of the present application includes a mounting seat 70 and a mounting plate 72. One end of the mounting seat 70 is connected to the third rotating body 24, and the other end is provided with an auxiliary plate 71. The third rotating body 24 and the auxiliary plate 71 are arranged in parallel, and the third rotating body 24 and the auxiliary plate 71 are both arranged on one side of the mounting seat 70. The auxiliary plate 71 is rotatably arranged on the second adjustment rod 50 to increase the stability of the mounting seat 70. The mounting plate 72 is bolted to the mounting seat 70, and the projection device 30 is arranged on the mounting plate 72, which has a simple structure and is easy to disassemble.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A projection device with adjustable contour lines, It is characterized in that include: A bracket, comprising a bracket body and a support rod which can be lifted and lowered on the bracket body; The adjusting device comprises a base arranged at the top of the support rod, the top of the base is rotatably provided with a first rotating body, the side of the first rotating body is extended with a first bracket, the top of the base is provided with a first rotating shaft, the first rotating body is rotatably arranged on the first rotating shaft, one side of the first rotating body is provided with a first opening, the first rotating body is penetrated by a first adjusting rod for adjusting the size of the first opening, one side of the first opening is provided with a first screw hole, the other side is provided with a first stepped hole that passes through the first rotating body, the center lines of the first screw hole and the first stepped hole coincide with each other, the first adjusting rod passes through the first stepped hole, and the end of the first adjusting rod is provided with a first threaded section that threadably cooperates with the first screw hole. The first adjusting rod is provided with a first baffle for abutting against the bottom surface of the large hole portion of the first stepped hole, the end of the first bracket is rotatably provided with a second rotating body, the second rotating body is penetrated by a second bracket, the second bracket is rotatably provided with a third rotating body, and the third rotating body is connected to a mounting bracket; The first bracket is arranged along a direction perpendicular to the first rotating shaft, a second rotating shaft is arranged at the end of the first bracket, the second rotating body is rotatably arranged on the second rotating shaft, a second opening is arranged at one side of the second rotating body, and a second adjusting rod for adjusting the size of the second opening is passed through the second rotating body; The mounting bracket comprises: A mounting seat, one end of which is connected to the third rotating body, and the other end of which is provided with an auxiliary plate, the third rotating body is arranged parallel to the auxiliary plate, and the auxiliary plate is rotatably arranged on the second adjusting rod; A mounting plate, connected to the mounting seat with bolts; A projection device is used to generate grating stripes and cross lines, and the projection device is arranged on the mounting plate of the mounting bracket.

2. The projection device with adjustable contour lines according to claim 1, It is characterized in that The second bracket is arranged along a length direction perpendicular to the first bracket, and the second bracket includes a first support shaft and a second support shaft respectively arranged on both sides of the second opening, a second blind hole is arranged in the first support shaft, a second screw hole is penetrated through the second support shaft, the center lines of the second blind hole and the second screw hole coincide, a second annular groove is arranged in the second blind hole, a second annular plate rotatably arranged in the second annular groove is provided at the end of the second adjusting rod, and a second threaded section matching the second screw hole is provided on the second adjusting rod.

3. The projection device with adjustable contour lines according to claim 2, It is characterized in that A third rotating shaft is provided at the end of the first supporting shaft, the third rotating body is rotatably arranged on the third rotating shaft, a third opening is provided at one side of the third rotating body, and a third adjusting rod for adjusting the size of the third opening is passed through the third rotating body.

4. The projection device with adjustable contour lines according to claim 3, It is characterized in that A third screw hole is provided on one side of the third opening, and a third through hole is provided on the other side, the center lines of the third screw hole and the third through hole coincide, the third adjusting rod is passed through the third screw hole and the third through hole, the third adjusting rod is provided with a third threaded section matching the third screw hole, and the third adjusting rod is provided with a third baffle for abutting against the side of the third swivel.

5. The projection device with adjustable contour lines according to claim 1, It is characterized in that The bracket body is a tripod bracket, and a first three-legged seat is provided on the top of the tripod bracket. The support rod is inserted into the first three-legged seat. A fourth screw hole is provided on the first three-legged seat. A screw rod is inserted into the fourth screw hole, and the end of the screw rod is supported on the outer periphery of the support rod.

6. The projection device with adjustable contour lines according to claim 1, It is characterized in that The projection device comprises a projector body and a grating generator for generating a cross-line positioning grating and a vertical positioning grating.

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