CN217611016U - Rotatable combined prism device - Google Patents
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- CN217611016U CN217611016U CN202222457127.9U CN202222457127U CN217611016U CN 217611016 U CN217611016 U CN 217611016U CN 202222457127 U CN202222457127 U CN 202222457127U CN 217611016 U CN217611016 U CN 217611016U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 244000309464 bull Species 0.000 claims description 34
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 208000004350 Strabismus Diseases 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of medical equipment, specifically a rotatable combination prism device. The utility model provides a current strabismus optometry technique optometry precision low, the operation problem that wastes time and energy. A rotatable combined prism device comprises a circular mirror disc, a gasket A, a gasket B, a gearwheel A, a gearwheel B, a pinion A, a pinion B, a plane bearing, a transmission shaft, three screws A, three screws B, a mirror base A and a mirror base B; the lens base A and the lens base B are rotatably assembled in one mounting hole of the circular lens disc; the upper end surface of the lens seat A exceeds the upper end surface of the circular lens disc, and the upper end of the outer side surface of the lens seat A is provided with gear teeth meshed with the large gear A; the lower end surface of the mirror base B exceeds the lower end surface of the circular mirror disc, and the lower end of the outer side surface of the mirror base B is provided with gear teeth meshed with the large gear B; a prism lens A is fixedly embedded in the inner cavity of the lens seat A; the inner cavity of the lens base B is fixedly embedded with a prism lens B. The utility model is suitable for an optometry is looked to one side.
Description
Technical Field
The utility model relates to the technical field of medical equipment, specifically a rotatable combined prism device.
Background
At present, the strabismus optometry is generally carried out by adopting an optometry card box or a manual optometry head. However, in practical application, the optometry card box and the manual optometry head have the following problems due to the limitations of the structures thereof: first, no matter the optometry card box or the manual optometry head, the combination of the prism degrees is realized by switching different prism sheets, so that the combination of the limited prism degrees can be realized only in the measuring range, and the combination of any prism degree in the measuring range cannot be realized, thereby causing the low optometry precision. Secondly, no matter be optometry cartridge or manual optometry head, all realize the combination of prism degree based on manual operation, therefore it has the problem that the operation is wasted time and energy. Therefore, a rotatable combined prism device is needed to be invented to solve the problems of low optometry precision and time and labor consuming operation of the existing strabismus optometry technology.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem that current strabismus optometry technique optometry precision is low, the operation wastes time and energy, provide a rotatable combined prism device.
The utility model discloses an adopt following technical scheme to realize:
a rotatable combined prism device comprises a circular mirror disc, a gasket A, a gasket B, a gearwheel A, a gearwheel B, a pinion A, a pinion B, a plane bearing, a transmission shaft, three screws A, three screws B, a mirror base A and a mirror base B;
wherein, the center of the end surface of the circular mirror disk is provided with a central hole in a through way; the edge of the end face of the circular mirror disk is provided with a plurality of mounting holes which are arranged at equal intervals along the circumferential direction in a penetrating way;
the lower end face of the gasket A is in coaxial contact with the upper end face of the circular mirror disc; the upper end surface of the gasket B is coaxially contacted with the lower end surface of the circular mirror disc; the inner diameter of the washer A is equal to that of the washer B, and the inner diameters of the washer A and the washer B are equal to the aperture of a central hole of the circular mirror disc; the outer diameter of the washer A is equal to that of the washer B, and the outer diameters of the washer A and the washer B are both smaller than that of the circular mirror disc;
the lower end face of the large gear A is in coaxial contact with the upper end face of the gasket A; the upper end face of the large gear B is coaxially contacted with the lower end face of the gasket B; the inner diameter of the bull gear A is equal to that of the bull gear B, and both the bull gear A and the bull gear B are smaller than the aperture of a central hole of the circular mirror plate; the outer diameter of the bull gear A is equal to that of the bull gear B, and both the bull gear A and the bull gear B are smaller than the outer diameter of the circular mirror disc and larger than the outer diameter of the gasket A; the inner edge of the end face of the big gear B is provided with three assembling holes A which are arranged equidistantly along the circumferential direction in a penetrating way;
the lower end face of the pinion A is coaxially fixed with the upper end face of the bull gear A; each needle roller of the plane bearing is contacted with the upper end face of the pinion A, and the plane bearing and the pinion A are coaxially arranged; the lower end face of the pinion B is simultaneously contacted with each needle roller of the plane bearing, and the pinion B and the plane bearing are coaxially arranged; the inner diameter of the pinion A is equal to that of the plane bearing, and the inner diameters of the pinion A and the plane bearing are both smaller than that of the bull gear A; the inner diameter of the pinion B is smaller than that of the plane bearing; the outer diameter of the pinion A is equal to that of the pinion B, and both the outer diameter of the pinion A and the outer diameter of the pinion B are smaller than that of the washer A and larger than that of the plane bearing; the inner edge of the end face of the pinion B is provided with three assembling holes B which are arranged at equal intervals along the circumferential direction in a penetrating way;
the transmission shaft is of a hollow structure, and the outer side surface of the transmission shaft is a stepped surface with a thin upper part and a thick lower part; three threaded through holes which are arranged equidistantly along the circumferential direction are arranged between the step transition section on the outer side surface of the transmission shaft and the lower end surface in a penetrating way; the upper end surface of the transmission shaft is provided with three threaded concave holes which are equidistantly arranged along the circumferential direction; the transmission shaft simultaneously penetrates through the gasket B, the central hole of the circular mirror disc, the gasket A, the large gear A and the small gear A;
the three screws A correspondingly penetrate through the three assembly holes A one by one, and the tail ends of the three screws A are correspondingly screwed in the three threaded through holes one by one; the three screws B correspondingly penetrate through the three assembling holes B one by one, and the tail ends of the three screws B are correspondingly screwed in the three threaded concave holes one by one;
the lens base A and the lens base B are rotatably assembled in one mounting hole of the circular lens disk; the upper end surface of the lens seat A exceeds the upper end surface of the circular lens disc, and the upper end of the outer side surface of the lens seat A is provided with gear teeth meshed with the large gear A; the lower end surface of the lens base B exceeds the lower end surface of the circular lens disk, and the lower end of the outer side surface of the lens base B is provided with gear teeth meshed with the large gear B; a prism sheet A is fixedly embedded in the inner cavity of the lens base A, and the straight surface of the prism sheet A faces downwards, and the inclined surface of the prism sheet A faces upwards; the inner cavity of the lens base B is fixedly embedded with a prism sheet B, and the straight surface of the prism sheet B faces upwards, and the inclined surface of the prism sheet B faces downwards.
When the stepping motor works, the pinion A is meshed with the external gear A, and the external gear A is fixedly assembled on an output shaft of the external stepping motor A. The pinion B is meshed with an external gear B, and the external gear B is fixedly assembled on an output shaft of an external stepping motor B. The specific working process is as follows: 1. in the initial state, the base direction of the prism sheet a is 90 °, and the base direction of the prism sheet B is 270 °. 2. In the process of strabismus optometry, the prism sheet A and the prism sheet B are respectively controlled by the external stepping motor A and the external stepping motor B to rotate in opposite directions with the same angle, so that any prism degree can be combined in a measuring range to meet optometry requirements. The specific control process is as follows: outside step motor A drives outside gear A and carries out clockwise (anticlockwise) rotation, and outside gear A drives pinion A and carries out anticlockwise (clockwise) rotation, and pinion A drives gear wheel A and carries out anticlockwise (clockwise) rotation, and gear wheel A drives microscope base A and carries out clockwise (anticlockwise) rotation, and microscope base A drives prism piece A and carries out clockwise (anticlockwise) rotation. Meanwhile, the external stepping motor B drives the external gear B to rotate counterclockwise (clockwise), the external gear B drives the pinion B to rotate clockwise (counterclockwise), the pinion B drives the transmission shaft to rotate clockwise (counterclockwise), the transmission shaft drives the gearwheel B to rotate clockwise (counterclockwise), the gearwheel B drives the microscope base B to rotate counterclockwise (clockwise), and the microscope base B drives the prism lens B to rotate counterclockwise (clockwise). In the above process, the external stepping motor a and the external stepping motor B rotate in opposite directions and at equal angles, thereby rotating the prism sheet a and the prism sheet B in opposite directions and at equal angles. The following relation is satisfied between the rotation angle and the combined prism degree: θ = arcsin (P/S); in the formula: θ represents a rotation angle; p represents the combined prism power; s represents the combined prism power span. 3. If the substrate directions of the prism sheet A and the prism sheet B need to be adjusted, the external stepping motor A and the external stepping motor B respectively control the prism sheet A and the prism sheet B to rotate in the same angle and direction. The specific control process is as follows: external stepper motor A drives external gear A to rotate clockwise (anticlockwise), external gear A drives pinion A to rotate anticlockwise (clockwise), pinion A drives gear wheel A to rotate anticlockwise (clockwise), gear wheel A drives mirror base A to rotate clockwise (anticlockwise), and mirror base A drives prism lens A to rotate clockwise (anticlockwise). Meanwhile, the external stepping motor B drives the external gear B to rotate clockwise (counterclockwise), the external gear B drives the pinion B to rotate counterclockwise (clockwise), the pinion B drives the transmission shaft to rotate counterclockwise (clockwise), the transmission shaft drives the gearwheel B to rotate counterclockwise (clockwise), the gearwheel B drives the mirror base B to rotate clockwise (counterclockwise), and the mirror base B drives the prism lens B to rotate clockwise (counterclockwise). In the above process, the external stepping motor a and the external stepping motor B rotate in the same direction and at the same rotation angle, so that the prism sheet a and the prism sheet B rotate in the same direction and at the same rotation angle.
Based on above-mentioned process, compare with current strabismus optometry technique, a rotatable combination prism device through adopting brand-new structure, possessed following advantage: one of which is compared with optometry card case and manual optometry head, the utility model discloses no longer realize the combination of prism degree through switching different prism pieces, but realize the combination of prism degree through rotating two prism pieces, consequently it can make up out arbitrary prism degree in the range to optometry precision has effectively been improved. Its two, compare with optometry card case and manual optometry head, the utility model discloses no longer realize the combination of prism degree based on manually operation, but realize the combination of prism degree based on step motor, consequently it has possessed operation labour saving and time saving's advantage.
The utility model discloses rational in infrastructure, design benefit have effectively solved the problem that current strabismus optometry technique optometry precision is low, the operation wastes time and energy, are applicable to the strabismus optometry.
Drawings
Fig. 1 is an exploded view of the structure of the present invention.
Fig. 2 is a schematic view of a part of the structure of the present invention.
In the figure: 1-circular mirror disk, 201-gasket A, 202-gasket B, 301-large gear A, 302-large gear B, 401-small gear A, 402-small gear B, 5-plane bearing, 6-transmission shaft, 701-screw A, 702-screw B, 801-mirror base A, 802-mirror base B, 803-mirror base C, 901-assembly hole A, 902-assembly hole B, 1001-threaded through hole, 1002-threaded concave hole, 1101-prism sheet A, 1102-prism sheet B, 1201-backing ring A and 1202-backing ring B.
Detailed Description
A rotatable combined prism device comprises a circular mirror disc 1, a gasket A201, a gasket B202, a bull gear A301, a bull gear B302, a pinion gear A401, a pinion gear B402, a plane bearing 5, a transmission shaft 6, three screws A701, three screws B702, a mirror base A801 and a mirror base B802;
wherein, the center of the end surface of the circular mirror disk 1 is provided with a central hole in a through way; the edge of the end face of the circular mirror disk 1 is provided with a plurality of mounting holes which are arranged at equal intervals along the circumferential direction in a penetrating way;
the lower end face of the gasket A201 is in coaxial contact with the upper end face of the circular mirror disc 1; the upper end surface of the gasket B202 is coaxially contacted with the lower end surface of the circular mirror disc 1; the inner diameter of the washer A201 is equal to that of the washer B202, and the inner diameters of the washers are equal to the aperture of a central hole of the circular mirror disc 1; the outer diameter of the washer A201 is equal to that of the washer B202, and the outer diameters of the washer A and the washer B are both smaller than that of the circular mirror disc 1;
the lower end face of the large gear A301 is in coaxial contact with the upper end face of the gasket A201; the upper end face of the bull gear B302 is in coaxial contact with the lower end face of the washer B202; the inner diameter of the bull gear A301 is equal to that of the bull gear B302, and both the inner diameter and the inner diameter are smaller than the aperture of a central hole of the circular mirror disc 1; the outer diameter of the bull gear A301 is equal to that of the bull gear B302, and both the outer diameter of the bull gear A301 and the outer diameter of the bull gear B302 are smaller than the outer diameter of the circular mirror disc 1 and larger than the outer diameter of the gasket A201; the inner edge of the end face of the bull gear B302 is provided with three assembling holes A901 which are arranged equidistantly along the circumferential direction in a penetrating way;
the lower end surface of the pinion A401 is coaxially fixed with the upper end surface of the bull gear A301; each needle roller of the plane bearing 5 is in contact with the upper end face of the pinion a401, and the plane bearing 5 is arranged coaxially with the pinion a 401; the lower end face of the pinion gear B402 is simultaneously in contact with the respective needle rollers of the flat bearing 5, and the pinion gear B402 is disposed coaxially with the flat bearing 5; the inner diameter of the pinion gear A401 is equal to the inner diameter of the plane bearing 5, and both are smaller than the inner diameter of the bull gear A301; the inner diameter of the pinion gear B402 is smaller than the inner diameter of the flat bearing 5; the outer diameter of pinion a401 and the outer diameter of pinion B402 are equal and both smaller than the outer diameter of washer a201 and larger than the outer diameter of the flat bearing 5; three assembling holes B902 which are arranged at equal intervals along the circumferential direction are formed in the inner edge of the end face of the pinion B402 in a penetrating mode;
the transmission shaft 6 is of a hollow structure, and the outer side surface of the transmission shaft 6 is a step surface with a thin upper part and a thick lower part; three threaded through holes 1001 which are arranged at equal intervals along the circumferential direction are arranged between the step transition section on the outer side surface of the transmission shaft 6 and the lower end surface in a penetrating manner; the upper end surface of the transmission shaft 6 is provided with three threaded concave holes 1002 which are circumferentially arranged at equal intervals; the transmission shaft 6 simultaneously penetrates through a gasket B202, a central hole of the circular mirror disc 1, a gasket A201, a bull gear A301 and a pinion A401;
the three screws A701 correspondingly penetrate through the three assembly holes A901 one by one, and the tail ends of the three screws A701 correspondingly screw into the three threaded through holes 1001 one by one; the three screws B702 penetrate through the three assembly holes B902 in a one-to-one correspondence manner, and the tail ends of the three screws B702 are screwed in the three threaded concave holes 1002 in a one-to-one correspondence manner;
the lens base A801 and the lens base B802 are rotatably assembled in one mounting hole of the circular lens disc 1; the upper end surface of the mirror seat A801 exceeds the upper end surface of the circular mirror disc 1, and the upper end of the outer side surface of the mirror seat A801 is provided with gear teeth meshed with the large gear A301; the lower end surface of the mirror base B802 exceeds the lower end surface of the circular mirror disc 1, and the lower end of the outer side surface of the mirror base B802 is provided with gear teeth meshed with the bull gear B302; a prism sheet A1101 is fixedly embedded in the inner cavity of the lens seat A801, and the straight surface of the prism sheet A1101 faces downwards, and the inclined surface faces upwards; the prism sheet B1102 is fixedly embedded in the inner cavity of the lens holder B802, and the straight surface of the prism sheet B1102 faces upward and the inclined surface faces downward.
The device also comprises a supporting ring A1201 and a supporting ring B1202; the prism sheet A1101 is fixed in a supporting ring A1201 in a gluing way, and the supporting ring A is fixedly embedded in the inner cavity of the lens base A801; the prism sheet B1102 is glued and fixed in the supporting ring B1202, and the supporting ring B1202 is fixedly embedded in the inner cavity of the lens base B802.
Also comprises a lens seat C803; the lens base C803 is rotatably assembled in the other mounting hole of the circular lens disk 1; the upper end surface of the mirror seat C803 exceeds the upper end surface of the circular mirror disc 1, and the upper end of the outer side surface of the mirror seat C803 is provided with gear teeth meshed with the large gear A301.
The prism degree of the prism sheet a1101 and the prism degree of the prism sheet B1102 are each half of the combined prism degree range.
The prism degree of the prism sheet A1101 and the prism degree of the prism sheet B1102 are both 10cm/m; the combined prism measurement range is 20cm/m.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are all within the scope of the invention.
Claims (5)
1. A rotatable compound prism device, comprising: the endoscope comprises a circular endoscope disc (1), a gasket A (201), a gasket B (202), a bull gear A (301), a bull gear B (302), a pinion gear A (401), a pinion gear B (402), a plane bearing (5), a transmission shaft (6), three screws A (701), three screws B (702), an endoscope seat A (801) and an endoscope seat B (802);
wherein, the center of the end surface of the circular mirror disk (1) is provided with a central hole in a through way; the edge of the end face of the circular mirror disk (1) is provided with a plurality of mounting holes which are arranged at equal intervals along the circumferential direction in a penetrating way;
the lower end surface of the gasket A (201) is in coaxial contact with the upper end surface of the circular mirror disc (1); the upper end surface of the gasket B (202) is in coaxial contact with the lower end surface of the circular mirror disc (1); the inner diameter of the gasket A (201) is equal to that of the gasket B (202), and the inner diameters of the gasket A and the gasket B are equal to the aperture of a central hole of the circular mirror disc (1); the outer diameter of the gasket A (201) is equal to that of the gasket B (202), and both the outer diameters are smaller than that of the circular mirror disc (1);
the lower end face of the large gear A (301) is in coaxial contact with the upper end face of the gasket A (201); the upper end face of the bull gear B (302) is in coaxial contact with the lower end face of the gasket B (202); the inner diameter of the bull gear A (301) is equal to the inner diameter of the bull gear B (302), and both the inner diameters are smaller than the aperture of a central hole of the circular mirror disc (1); the outer diameter of the bull gear A (301) is equal to that of the bull gear B (302), and both the outer diameters are smaller than that of the circular mirror disc (1) and larger than that of the gasket A (201); the inner edge of the end face of the large gear B (302) is provided with three assembling holes A (901) which are arranged at equal intervals along the circumferential direction in a penetrating way;
the lower end surface of the pinion A (401) is coaxially fixed with the upper end surface of the bull gear A (301); each needle roller of the plane bearing (5) is contacted with the upper end surface of the pinion A (401), and the plane bearing (5) and the pinion A (401) are coaxially arranged; the lower end face of the pinion B (402) is simultaneously contacted with each needle roller of the plane bearing (5), and the pinion B (402) and the plane bearing (5) are coaxially arranged; the inner diameter of the pinion A (401) is equal to that of the plane bearing (5), and the inner diameters of the pinion A and the plane bearing are both smaller than that of the bull gear A (301); the inner diameter of the pinion B (402) is smaller than that of the plane bearing (5); the outer diameter of pinion A (401) and the outer diameter of pinion B (402) are equal and both smaller than the outer diameter of washer A (201) and larger than the outer diameter of the flat bearing (5); the inner edge of the end face of the pinion B (402) is provided with three assembling holes B (902) which are arranged at equal intervals along the circumferential direction in a penetrating way;
the transmission shaft (6) is of a hollow structure, and the outer side surface of the transmission shaft (6) is a stepped surface which is thin at the top and thick at the bottom; three threaded through holes (1001) which are arranged at equal intervals along the circumferential direction are arranged between the outer side surface step transition section and the lower end surface of the transmission shaft (6); the upper end surface of the transmission shaft (6) is provided with three threaded concave holes (1002) which are arranged at equal intervals along the circumferential direction; the transmission shaft (6) is simultaneously arranged in the gasket B (202), the central hole of the circular mirror disc (1), the gasket A (201), the bull gear A (301) and the pinion A (401) in a penetrating manner;
the three screws A (701) penetrate through the three assembly holes A (901) in a one-to-one correspondence mode, and the tail ends of the three screws A (701) are screwed into the three threaded through holes (1001) in a one-to-one correspondence mode; the three screws B (702) penetrate through the three assembly holes B (902) in a one-to-one correspondence manner, and the tail ends of the three screws B (702) are screwed in the three threaded concave holes (1002) in a one-to-one correspondence manner;
the lens base A (801) and the lens base B (802) are rotatably assembled in one mounting hole of the circular lens disc (1); the upper end surface of the mirror seat A (801) exceeds the upper end surface of the circular mirror disc (1), and the upper end of the outer side surface of the mirror seat A (801) is provided with gear teeth meshed with the large gear A (301); the lower end face of the lens base B (802) exceeds the lower end face of the circular lens disk (1), and the lower end of the outer side face of the lens base B (802) is provided with gear teeth meshed with the large gear B (302); a prism sheet A (1101) is fixedly embedded in the inner cavity of the lens seat A (801), and the straight surface and the inclined surface of the prism sheet A (1101) face downwards; the inner cavity of the lens base B (802) is fixedly embedded with a prism sheet B (1102), and the straight surface of the prism sheet B (1102) faces upwards and the inclined surface faces downwards.
2. A rotatable combining prism apparatus according to claim 1, wherein: the device also comprises a supporting ring A (1201) and a supporting ring B (1202); the prism sheet A (1101) is fixedly glued in a supporting ring A (1201), and the supporting ring A is fixedly embedded in an inner cavity of the lens base A (801); the prism sheet B (1102) is fixed in the supporting ring B (1202) in a gluing way, and the supporting ring B (1202) is fixedly embedded in the inner cavity of the lens base B (802).
3. A rotatable combining prism apparatus according to claim 1, wherein: further comprising a lens holder C (803); the lens base C (803) is rotatably assembled in the other mounting hole of the circular lens disk (1); the upper end surface of the lens seat C (803) exceeds the upper end surface of the circular lens disk (1), and the upper end of the outer side surface of the lens seat C (803) is provided with gear teeth meshed with the large gear A (301).
4. A rotatable combining prism apparatus according to claim 1, wherein: the prism degree of the prism sheet a (1101) and the prism degree of the prism sheet B (1102) are each half of the combined prism degree range.
5. A rotatable combining prism apparatus according to claim 1, wherein: the prism degree of the prism sheet A (1101) and the prism degree of the prism sheet B (1102) are both 10cm/m; the combined prism power range is 20cm/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222457127.9U CN217611016U (en) | 2022-09-16 | 2022-09-16 | Rotatable combined prism device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222457127.9U CN217611016U (en) | 2022-09-16 | 2022-09-16 | Rotatable combined prism device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217611016U true CN217611016U (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222457127.9U Active CN217611016U (en) | 2022-09-16 | 2022-09-16 | Rotatable combined prism device |
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| Country | Link |
|---|---|
| CN (1) | CN217611016U (en) |
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- 2022-09-16 CN CN202222457127.9U patent/CN217611016U/en active Active
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