CN220309110U - Two-dimensional centripetal rotary motion spherical scanning mechanism - Google Patents
Two-dimensional centripetal rotary motion spherical scanning mechanism Download PDFInfo
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- CN220309110U CN220309110U CN202320992989.3U CN202320992989U CN220309110U CN 220309110 U CN220309110 U CN 220309110U CN 202320992989 U CN202320992989 U CN 202320992989U CN 220309110 U CN220309110 U CN 220309110U
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- 230000033001 locomotion Effects 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 210000001525 retina Anatomy 0.000 description 3
- 206010063385 Intellectualisation Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000002207 retinal effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model discloses a two-dimensional centripetal rotary motion spherical scanning mechanism, which comprises a base frame, a radial arm, a support frame, an arc-shaped moving device and an output device, wherein the output device is arranged on the arc-shaped moving device; one end of the spiral arm is rotationally connected with the base frame, and the rotation center of the spiral arm is overlapped with the focus projection of the output device; the other end of the radial arm is connected with a support frame, an arc-shaped moving device is arranged on the support frame, the arc-shaped moving device moves in an arc shape in a plane perpendicular to the rotating surface of the radial arm, and the arc center of the arc-shaped moving device is overlapped with the focus projection of the output device. The two-dimensional centripetal rotary motion spherical scanning mechanism of the utility model enables the movement adjustment of two crossed dimensions to be applied to the output device, realizes the triangular pyramid region scanning with the focus as the center, and meets the multi-dimensional data acquisition requirement.
Description
Technical Field
The embodiment of the utility model relates to the technical field of medical equipment, in particular to a two-dimensional centripetal rotary motion spherical scanning mechanism.
Background
Eye volume data of a macular region and a peripheral retinal region in the center of the retina is very important for myopia prevention and control, but currently, ophthalmic apparatuses commonly used in the market can only obtain eye volume data of the macular region, but cannot obtain eye volume data of the peripheral retinal region. In the related art, the peripheral visual field eye volume data is obtained by changing the gazing direction of the tested person, but each measurement needs to change the gazing direction once by the tested person, the measurement speed is too slow, the detection efficiency is low, and the repeated measurement is easily interfered by the state change of human eyes, so that the accuracy of eye volume data detection is low.
Disclosure of Invention
Therefore, the embodiment of the utility model provides a two-dimensional centripetal rotary motion spherical scanning mechanism, which aims to solve the problem that the eye volume data of a peripheral retina area cannot be accurately obtained due to inflexibility of a scanning end of ophthalmic equipment in the prior art.
In order to achieve the above object, the embodiment of the present utility model provides the following technical solutions:
a two-dimensional centripetal rotary motion spherical scanning mechanism is characterized in that: the device comprises a base frame, a rotating arm, a supporting frame, an arc-shaped moving device and an output device, wherein the output device is arranged on the arc-shaped moving device; one end of the radial arm is rotationally connected with the base frame, and the rotation center of the radial arm is overlapped with the focus projection of the output device;
the other end of the radial arm is connected with a support frame, an arc-shaped moving device is arranged on the support frame, the arc-shaped moving device moves in an arc shape in a plane perpendicular to the rotating surface of the radial arm, and the arc center of the arc-shaped movement is overlapped with the focus projection of the output device.
Further, the scanning mechanism further comprises a rotation driving device and/or an arc driving device, wherein the rotation driving device is used for controlling the rotation angle of the radial arm, and the arc driving device is used for controlling the movement angle of the arc moving device.
Further, the rotary driving device comprises a rotary driving motor, a first driving gear and a first arc-shaped tooth arranged on the radial arm, wherein the output end of the rotary driving motor is fixedly connected with the first driving gear, the first driving gear and the first arc-shaped tooth are in meshed transmission, and the arc center of the first arc-shaped tooth is overlapped with the rotation center of the radial arm.
Further, the arc-shaped moving device comprises an arc-shaped sliding rail and a sliding block, wherein the arc-shaped sliding rail is fixed on the supporting frame, and the sliding block is arranged on the arc-shaped sliding rail and moves in an arc-shaped centripetal manner along the sliding rail; the sliding block is directly fixed or indirectly fixedly connected with the arc driving device.
Further, the arc driving device comprises an arc driving motor, a second driving gear and second arc teeth, wherein the second arc teeth are fixed on the support frame and are positioned on the outer arc surface side of the arc sliding rail, and the second arc teeth and the arc sliding rail are concentric arcs;
the machine body of the arc line driving motor is directly and fixedly connected with the sliding block, the output end of the arc line driving motor is fixedly connected with the second driving gear, and the second driving gear and the second arc-shaped teeth are in meshed transmission.
Further, the arc driving device comprises an arc driving motor, a second driving gear and second arc teeth, the arc sliding rail and the second arc teeth are respectively arranged on two sides of the supporting frame and are concentric arcs, the output end of the arc driving motor is fixedly connected with the second driving gear, the second driving gear and the second arc teeth are in meshed transmission, and the driving device and the sliding block are fixedly connected through a connecting frame.
Further, one or more stages of transmission gears are arranged between the second driving gear and the second arc-shaped teeth.
Further, one end or two ends of the second arc-shaped tooth are provided with a third limiting structure.
Further, the radial arm is rotatably connected with the base frame through a rotating shaft.
Further, the rotating shaft comprises a central shaft positioned at the inner side and a supporting rotating piece sleeved at the outer side of the central shaft, and a first limiting structure is arranged on the central shaft;
if the central shaft is fixedly connected with the base frame, the supporting rotating piece is fixedly connected with the rotating arm, and a second limiting structure matched with the first limiting structure is arranged on the rotating arm; or,
if the central shaft is fixedly connected with the radial arm, the supporting rotating piece is fixedly connected with the base frame, and a second limiting structure matched with the first limiting structure is arranged on the base frame.
The embodiment of the utility model has the following advantages:
the utility model discloses a two-dimensional centripetal rotary motion spherical scanning mechanism, which comprises a base frame, a radial arm, a support frame, an arc-shaped moving device and an output device, wherein the output device is arranged on the arc-shaped moving device; one end of the spiral arm is rotationally connected with the base frame, and the rotation center of the spiral arm is overlapped with the focus projection of the output device; the other end of the radial arm is connected with a support frame, an arc-shaped moving device is arranged on the support frame, the arc-shaped moving device moves in an arc shape in a plane perpendicular to the rotating surface of the radial arm, and the arc center of the arc-shaped moving device is overlapped with the focus projection of the output device. The two-dimensional centripetal rotary motion spherical scanning mechanism of the utility model enables the movement adjustment of two crossed dimensions to be applied to the output device, realizes the triangular pyramid region scanning with the focus as the center, and meets the multi-dimensional data acquisition requirement.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.
FIG. 1 is an exploded view of a two-dimensional centripetal rotary motion spherical scanning mechanism provided by an embodiment of the utility model;
FIG. 2 is an assembly structure diagram of a two-dimensional centripetal rotary motion spherical scanning mechanism provided by an embodiment of the utility model;
fig. 3 is a top view of a two-dimensional centripetal rotation spherical scanning mechanism according to an embodiment of the present utility model, wherein straight dashed lines in the figure are respectively a +30° right limit angle, a 0 ° angle, and a-30 ° left limit angle from top to bottom;
fig. 4 is a side view of a two-dimensional centripetal rotation spherical scanning mechanism according to an embodiment of the present utility model, wherein straight dashed lines in the drawing are respectively an upper limit angle of +30°, an angle of 0 ° and a lower limit angle of-30 ° from top to bottom.
In the figure:
1. a base frame; 2. a radial arm; 3. a support frame; 4. a rotation shaft; 5. a first limit structure; 6. a second limit structure; 7. a focal point; 8. a rotating electric machine; 9. a first drive gear; 10. a first arcuate tooth; 11. an arc-shaped slide rail; 12. a slide block; 13. an arc driving motor; 14. a second drive gear; 15. a second arcuate tooth; 16. a connecting frame; 17. a transmission gear; 18. and a third limiting structure.
Detailed Description
Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 and 2, a two-dimensional centripetal rotary motion spherical scanning mechanism comprises a base frame 1, a radial arm 2, a supporting frame 3, a rotary driving device, an arc-shaped moving device and an output device (which are arranged on the arc-shaped moving device, not shown in the drawing, and can also be other components needing to do arc centripetal motion), wherein the following specific description of each structure is provided by combining with the embodiment:
1. radial arm 2
One end of the radial arm 2 is rotatably connected with the base frame 1 through a rotating shaft 4, the rotating shaft 4 comprises a central shaft positioned at the inner side and a supporting rotating member sleeved at the outer side of the central shaft, such as a bearing, a rotating shaft sleeve, a slewing bearing, a rotating bearing and the like, a damping is arranged between the central shaft and the supporting rotating member, the damping is smaller than or equal to 0.5 time of the rotating driving force of the radial arm 2, and in the embodiment, the damping is preferably equal to 0.5 time of the rotating driving force of the radial arm 2, so that the radial arm 2 cannot be misaligned due to inertia when performing centripetal circular arc motion.
The central shaft is provided with a first limit structure 5, and if the central shaft is fixedly connected with the base frame 1, the supporting rotating member is fixedly connected with the radial arm 2, the supporting rotating member is provided with a second limit structure 6 matched with the first limit structure 5; if the central shaft is fixedly connected with the radial arm 2, and the supporting rotating member is fixedly connected with the base frame 1, the base frame 1 is provided with a second limiting structure 6 matched with the first limiting structure 5, and the second limiting structure 6 can be arc-shaped, and the arc center of the second limiting structure is overlapped with the rotation center of the radial arm 2. In this embodiment, the second limiting structure is preferably an arc chute structure, and the second limiting structure 6 not only limits the rotation angle range of the first limiting structure 5, but also limits the degree of freedom of the first limiting structure 5 in the direction perpendicular to the rotation direction thereof, so that the problem that the radial arm 2 is separated from the base frame 1 from the vertical direction is further solved, and the stability of the rotational connection of the two is improved.
The rotation center of the radial arm 2 is overlapped with the vertical projection or the horizontal projection of the focus 7 of the output device, if the rotation surface of the radial arm 2 is a horizontal plane, the rotation center of the radial arm 2 is overlapped with the vertical projection of the focus 7, that is, the coordinates of the focus 7 are (0, 0), and the coordinates of the rotation center of the radial arm 2 are (0, -y); if the rotation surface of the radial arm 2 is a vertical surface, the rotation center of the radial arm 2 overlaps with the horizontal projection of the focal point 7, that is, the coordinates of the focal point 7 are (0, 0), and the coordinates of the horizontal projection of the radial arm 2 are (0, x), and in this embodiment, the rotation surface of the radial arm 2 is a horizontal surface.
The rotating angle of the rotating arm can be manually adjusted, or a rotating driving device is arranged, the rotating driving device controls the rotating angle of the rotating arm, the rotating angle of the rotating arm can be automatically adjusted, and the intellectualization of the system is improved.
2. Rotary driving device
As shown in fig. 3, the rotation driving device controls the rotation angle of the radial arm 2, and in this embodiment, in order to measure eye volume data of ±30° around the retina, the rotation angle of the radial arm 2 is selected to be between ±30°, and the eye is placed at the focal point 7. Specifically, the rotation driving device comprises a rotating motor 8, a first driving gear 9 and a first arc-shaped tooth 10 arranged on the radial arm 2, in this embodiment, an arc-shaped groove is formed in the radial arm 2, the first arc-shaped tooth 10 is arranged on the arc-shaped inner wall of the arc-shaped groove, the arc center of the first arc-shaped tooth 10 is overlapped with the rotation center of the radial arm 2, the output end of the rotating motor 8 is fixedly connected with the first driving gear 9, and the first driving gear 9 and the first arc-shaped tooth 10 are meshed for transmission to drive the radial arm 2 to rotate. The rotating motor 8 is fixed on the base frame 1 or other structures fixedly connected with the base frame 1, so that the rotating motor 8 and the base frame 1 form a direct fixed relationship or an indirect fixed relationship, and the rotating motor 8 drives the first arc-shaped teeth 10 to realize the rotating motion of the radial arm 2 relative to the base frame 1. The design reduces the necessary output power of the motor rotating radial arm 2 by increasing the rotating force arm, can realize that the low-power motor provides sufficient torsion, and compared with the traditional technical scheme that the motor is positioned at the rotating center, the motor has smaller volume and lighter weight, and can meet the requirement of equipment miniaturization more easily.
3. Support frame 3
The other end of the radial arm 2 is connected with the support frame 3, and when the radial arm 2 rotates, the support frame 3 moves in an arc shape along with the radial arm 2 in a horizontal plane, so that the relative distance between the support frame 3 and the focus 7 is unchanged. The support frame 3 is fixedly connected with the arc-shaped moving device, the arc-shaped surface of the arc-shaped sliding rail 11 in the arc-shaped moving device is perpendicular to the rotating surface of the radial arm 2, and the distance between the support frame 3 and the focus 7 is unchanged in the rotating motion process of the radial arm 2, so that the distance between the arc-shaped surface of the arc-shaped moving device and the focus 7 is unchanged all the time, and the output device is always aligned with the focus 7. In this embodiment, the shape and number of the supporting frames 3 are not limited, but in order to simplify the structure and facilitate the angle calculation, the supporting frames 3 are configured as plate-shaped structures perpendicular to the radial arms 2, the side walls of the supporting frames 3 are fixedly connected with arc-shaped moving devices, the arc surfaces of the arc-shaped sliding rails 11 in the arc-shaped moving devices are parallel to the side walls of the supporting frames 3, and the plane of the arc-shaped sliding rails 11 is perpendicular to the rotating surfaces of the radial arms 2.
4. Arc-shaped moving device
The sliding end of the arc-shaped moving device is provided with an output device, the scanning direction of the output device is positioned on the inner arc side of the arc-shaped moving device, the arc center of the arc-shaped moving device is overlapped with the focal point 7 of the output device, and the output device can slide to any position of the arc-shaped moving device, and the scanning direction of the output device is opposite to the focal point 7. Specifically, the arc-shaped moving device comprises an arc-shaped sliding rail 11, a sliding block 12 and an arc driving device, wherein the arc-shaped sliding rail 11 is arranged on one side wall of the supporting frame 3, the sliding block 12 is arranged on the arc-shaped sliding rail 11 to move along the sliding rail, and the output device is arranged on the sliding block 12. The sliding block 12 is fixedly connected with the moving end of an arc driving device, and the arc driving device controls the position of the sliding block 12.
The arc-shaped moving device can manually adjust the movement angle of the arc-shaped moving device or is provided with an arc-shaped driving device, and the arc-shaped driving device controls the movement angle of the arc-shaped moving device, so that the intellectualization of the system is improved.
The arc driving device comprises an arc driving motor 13, a second driving gear 14 and a second arc tooth 15, wherein the output end of the arc driving motor 13 is fixedly connected with the second driving gear 14, the second driving gear 14 and the second arc tooth 15 are in meshed transmission, the tooth surface of the second arc tooth 15 is arranged on the support frame 3, and the radian of the tooth surface of the second arc tooth 15 is the same as that of the arc sliding rail 11, namely, the positions of arc centers of the second driving gear 14 and the second arc tooth 15 are the same. The machine body of the arc driving motor 13 is directly or indirectly fixedly connected with the sliding block 12:
a. direct fixation
The outside of slider 12 is equipped with the installation face that parallels with the arcwall face of arc slide rail 11, second arc tooth 15 is fixed on the support frame, is located the extrados side of arc slide rail makes second arc tooth 15 and arc slide rail 11 each other be concentric arc, fixed connection realizes the synchronous motion of arc driving motor 13 and slider 12 between driving motor's the organism and slider 12.
b. Indirect fixation
The arc-shaped sliding rail 11 and the second arc-shaped teeth 15 are respectively arranged on the side walls of the two sides of the supporting frame 3, the arc-shaped sliding rail 11 and the second arc-shaped teeth 15 are in parallel, the arc-shaped driving motor 13 and the sliding block 12 are fixedly connected through the connecting frame 16, and synchronous movement of the arc-shaped driving motor 13 and the sliding block 12 is achieved. In the present embodiment, the shape and number of the connecting frames 16 are not limited, so long as the technical solution for fixedly connecting the driving motor and the slider 12 falls within the scope of the present embodiment.
One or more stages of transmission gears 17 may be added between the second driving gear 14 and the second arc-shaped teeth 15, and a group of transmission gears 17 is added between the second driving gear 14 and the second arc-shaped teeth 15, for example, the transmission gears 17 are single-shaft double gears, one gear is meshed with the second driving gear 14 for transmission, and the other gear is meshed with the second arc-shaped teeth 15 for transmission. The design can reduce the transmission speed, increase the transmission torque, realize that a low-power motor can provide sufficient torsion, reduce the resistance which needs to be overcome when the module moves, improve the transmission precision and meet the adjustment precision of the optical module.
As shown in fig. 4, the two ends of the second arc-shaped tooth 15 are both provided with a third limiting structure 18, and the third limiting structure 18 is fixed on the support frame 3, such as a column, a block, a plate, etc., in this embodiment, the specific structure of the third limiting structure 18 is not limited, as long as the technical solution capable of preventing the sliding block 12 from sliding out of the arc-shaped sliding rail 11 falls within the scope of this embodiment.
While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.
Claims (10)
1. A two-dimensional centripetal rotary motion spherical scanning mechanism is characterized in that: the device comprises a base frame, a rotating arm, a supporting frame, an arc-shaped moving device and an output device, wherein the output device is arranged on the arc-shaped moving device; one end of the radial arm is rotationally connected with the base frame, and the rotation center of the radial arm is overlapped with the focus projection of the output device;
the other end of the radial arm is connected with a support frame, an arc-shaped moving device is arranged on the support frame, the arc-shaped moving device moves in an arc shape in a plane perpendicular to the rotating surface of the radial arm, and the arc center of the arc-shaped movement is overlapped with the focus projection of the output device.
2. A two-dimensional centripetal rotary motion spherical scanning mechanism according to claim 1, wherein: the scanning mechanism further comprises a rotary driving device and/or an arc driving device, wherein the rotary driving device is used for controlling the rotation angle of the radial arm, and the arc driving device is used for controlling the movement angle of the arc moving device.
3. A two-dimensional centripetal rotary motion spherical scanning mechanism according to claim 2, wherein: the rotary driving device comprises a rotary driving motor, a first driving gear and a first arc-shaped tooth arranged on the radial arm, wherein the output end of the rotary driving motor is fixedly connected with the first driving gear, the first driving gear and the first arc-shaped tooth are in meshed transmission, and the arc center of the first arc-shaped tooth is overlapped with the rotation center of the radial arm.
4. A two-dimensional centripetal rotary motion spherical scanning mechanism according to claim 2, wherein: the arc-shaped moving device comprises an arc-shaped sliding rail and a sliding block, the arc-shaped sliding rail is fixed on the supporting frame, and the sliding block is arranged on the arc-shaped sliding rail and moves in an arc-shaped centripetal manner along the sliding rail; the sliding block is directly fixed or indirectly fixedly connected with the arc driving device.
5. The two-dimensional centripetal rotary motion spherical scanning mechanism according to claim 4, wherein: the arc driving device comprises an arc driving motor, a second driving gear and second arc teeth, the second arc teeth are fixed on the support frame and are positioned on the outer arc surface side of the arc sliding rail, and the second arc teeth and the arc sliding rail are concentric arcs;
the machine body of the arc line driving motor is directly and fixedly connected with the sliding block, the output end of the arc line driving motor is fixedly connected with the second driving gear, and the second driving gear and the second arc-shaped teeth are in meshed transmission.
6. The two-dimensional centripetal rotary motion spherical scanning mechanism according to claim 4, wherein: the arc driving device comprises an arc driving motor, a second driving gear and second arc teeth, wherein the arc sliding rail and the second arc teeth are respectively arranged on two sides of the supporting frame and are concentric arcs, the output end of the arc driving motor is fixedly connected with the second driving gear, the second driving gear and the second arc teeth are in meshed transmission, and the driving device and the sliding block are fixedly connected through a connecting frame.
7. A two-dimensional centripetal rotary motion spherical scanning mechanism according to claim 5 or 6, wherein: one-stage or multi-stage transmission gears are arranged between the second driving gear and the second arc-shaped teeth.
8. A two-dimensional centripetal rotary motion spherical scanning mechanism according to claim 5 or 6, wherein: and one end or two ends of the second arc-shaped tooth are respectively provided with a third limit structure.
9. A two-dimensional centripetal rotary motion spherical scanning mechanism according to claim 1, wherein: the radial arm is rotationally connected with the base frame through a rotating shaft.
10. A two-dimensional centripetal rotary motion spherical scanning mechanism according to claim 9, wherein: the rotating shaft comprises a central shaft positioned at the inner side and a supporting rotating piece sleeved at the outer side of the central shaft, and a first limiting structure is arranged on the central shaft;
if the central shaft is fixedly connected with the base frame, the supporting rotating piece is fixedly connected with the rotating arm, and a second limiting structure matched with the first limiting structure is arranged on the rotating arm; or,
if the central shaft is fixedly connected with the radial arm, the supporting rotating piece is fixedly connected with the base frame, and a second limiting structure matched with the first limiting structure is arranged on the base frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320992989.3U CN220309110U (en) | 2023-04-27 | 2023-04-27 | Two-dimensional centripetal rotary motion spherical scanning mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320992989.3U CN220309110U (en) | 2023-04-27 | 2023-04-27 | Two-dimensional centripetal rotary motion spherical scanning mechanism |
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| CN220309110U true CN220309110U (en) | 2024-01-09 |
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| CN202320992989.3U Active CN220309110U (en) | 2023-04-27 | 2023-04-27 | Two-dimensional centripetal rotary motion spherical scanning mechanism |
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| CN (1) | CN220309110U (en) |
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