CN116616696A

CN116616696A - Three-coordinate supporting platform of fundus camera and fundus camera

Info

Publication number: CN116616696A
Application number: CN202210156993.6A
Authority: CN
Inventors: 李达; 任文斌; 常献刚; 和超; 张大磊
Original assignee: Beijing Yingtong Medical Technology Co ltd; Beijing Airdoc Technology Co Ltd
Current assignee: Beijing Yingtong Medical Technology Co ltd; Beijing Airdoc Technology Co Ltd
Priority date: 2022-02-14
Filing date: 2022-02-21
Publication date: 2023-08-22
Also published as: CN115489820A

Abstract

The invention relates to a three-coordinate support platform of a fundus camera and the fundus camera, wherein the three-coordinate support platform comprises: the fixed base is provided with three sliding tables capable of realizing three-coordinate movement, one of the three sliding tables is a lens barrel installation sliding table which is used as an output end of a three-coordinate supporting platform for fixedly installing a lens barrel of the fundus camera; and the packing locking structure is used for locking the three sliding tables on the fixed base when the lens barrel mounting sliding table moves to a set packing position with the lens barrel so as to pack the fundus camera, and unlocking and releasing the three sliding tables so as to unpack the fundus camera. And the three sliding tables on the three-coordinate supporting platform are locked on the fixed base by utilizing the packing locking structure arranged on the three-coordinate supporting platform, so that each sliding table does not slide freely any more, and then the lens barrel can be locked, and the fundus camera packing is realized.

Description

Three-coordinate supporting platform of fundus camera and fundus camera

Technical Field

The present invention relates generally to the field of fundus camera technology. More particularly, the present invention relates to a three-coordinate support platform for a fundus camera and a fundus camera.

Background

Currently, in the fundus examination, fundus cameras are often used to photograph fundus retinas to detect eye health. The fundus camera is a fundus imaging device based on an optical imaging technology, and the retina is illuminated by white light, so that a fundus image is imaged on a sensor, and an acquired picture is imaged on a display screen, so that fundus image shooting can be completed. As disclosed in the chinese patent application publication No. CN112043237a, when photographing fundus images, the lens barrel of the fundus camera is moved, so that the lens on the lens barrel can be aligned with the pupil, and normal operation of the fundus camera is ensured. In the existing fundus camera, a three-coordinate supporting platform is generally used for supporting and placing a lens barrel, and the lens barrel can be driven to be adjusted in the front-back X direction, the left-right Z direction and the up-down Y direction.

The fundus camera belongs to precision equipment, and the transportation and operation flow of the fundus camera generally relate to safety guarantee structures and steps, and a motion system in a three-coordinate supporting platform needs to be fixed, so that certain movable devices in the fundus camera are prevented from moving at will, and instruments in the fundus camera are prevented from being damaged. When the fundus camera is started up, the three-coordinate supporting platform needs to be ensured to normally act so as to ensure that the fundus camera normally works. When the fundus camera is shut down, the three-coordinate supporting platform is required to be fixed, so that certain movable devices are prevented from being damaged due to unexpected movement.

For the above-described problems, a currently common solution is a lock-unlock manner as disclosed in a portable fundus camera disclosed in chinese patent application publication No. CN113729619a, in which an imaging module of the fundus camera is provided on a three-degree-of-freedom movement module, and the imaging module is locked at a predetermined position, the lock-unlock mechanism including a first lock hole provided on the imaging module and a second lock hole provided on the housing in correspondence therewith, and a lock pin insertably locking the holes via the second lock hole, wherein the lock pin locks the fundus camera when inserted into the first lock hole of the imaging module, and unlocks the fundus camera when removed from the first lock hole. When packing is required to be transported, the imaging module is driven to move to a preset position by the three-degree-of-freedom motion module, and then the imaging module can be locked by penetrating the locking pin between the shell and the imaging module, so that the imaging module is prevented from being damaged due to accidental movement in the transportation process. When the transportation is completed and the starting-up work is needed, the locking pin is detached from the shell and the imaging module, the locking of the imaging module is released, and then the imaging module is driven to normally move by the three-degree-of-freedom motion module, so that the unpacking operation is completed. However, the mode of packing locking and unpacking unlocking is directly applied between the imaging module and the shell, so that through holes are required to be matched between the imaging module and the shell, the locking and unlocking mechanisms are required to be specially designed for different fundus cameras, and the design and processing cost is high when the styles and types of the fundus cameras are more. In addition, the mode of manually assembling and disassembling the locking pin is particularly applied to the situation that the operation steps are complicated, the direction of losing the locking pin exists, and the practical use is inconvenient.

Disclosure of Invention

The invention provides a three-coordinate supporting platform of a fundus camera, which aims to solve the technical problem that in the prior art, a locking and unlocking mechanism is required to be specially designed for different fundus cameras due to the fact that a locking pin is arranged between a shell of the fundus camera and an imaging module. Further, the invention also provides a fundus camera using the three-coordinate support platform.

In order to solve the above problems, the first aspect of the present invention provides the following technical solutions: a three-coordinate support platform for a fundus camera, comprising: the fixed base is used for being fixed on the shell of the fundus camera, three sliding tables capable of achieving three-coordinate movement are arranged on the fixed base, one of the three sliding tables is a lens barrel installation sliding table, and the lens barrel installation sliding table is used as an output end of a three-coordinate supporting platform for fixedly installing a lens barrel of the fundus camera; and the packing locking structure is used for locking the three sliding tables on the fixed base when the lens barrel mounting sliding table moves to a set packing position with the lens barrel so as to pack the fundus camera, and unlocking and releasing the three sliding tables so as to unpack the fundus camera.

As a further improvement, the other two sliding tables of the three sliding tables are a first transition sliding table and a second transition sliding table, the first transition sliding table is assembled on the fixed base in a reciprocating manner, the second transition sliding table is assembled on the first transition sliding table in a reciprocating manner, one sliding table of the first transition sliding table and the second transition sliding table can slide in the front-back direction, the other sliding table can slide in the left-right direction, and the lens barrel installation sliding table is installed on the second transition sliding table in a lifting manner in the up-down direction; the packing locking structure comprises a first locking structure and a second locking structure; the first locking structure is arranged between the fixed base and the second transition sliding table and is used for locking the second transition sliding table and the first transition sliding table on the fixed base in the front-back direction and the left-right direction when the fundus camera is packaged; the second locking structure is used for locking the lens barrel mounting sliding table on the second transition sliding table along the up-down direction when the fundus camera is packaged.

As a further improvement, the first locking structure includes a first locking pin extending in the up-down direction, one of the fixed base and the second transition slide table is provided with the first locking pin, the other is provided with a first locking hole for inserting and extracting the first locking pin, the first locking pin or the first locking hole can move up and down in the up-down direction, and when the barrel mounting slide table moves to the set packing position with the barrel, the first locking pin is aligned up and down with the first locking hole, so that the first locking pin is inserted into the first locking hole to lock the second transition slide table and the first transition slide table on the fixed base.

As a further improvement, the first locking pin or the first locking hole is lifted by an electrically driven packing device.

As a further improvement, the fixing base, the first transition sliding table and the second transition sliding table are horizontal substrates extending horizontally, the first transition sliding table and the second transition sliding table are sequentially stacked and arranged on the fixing base from bottom to top, the first locking pin is integrally or separately fixedly arranged on the power output part of the electric drive packing device, and the electric drive packing device is fixedly arranged on the second transition sliding table, so that the second locking pin is arranged on the second transition sliding table.

As a further improvement, the electrically driven packing device has a packing position detecting device for outputting a signal when it is detected that the first locking pin is inserted downward into the first locking hole, so that the electrically driven packing device controls the first locking pin to stop downward.

As a further improvement, the second locking structure includes a second locking pin and a second locking hole each extending in a reciprocating sliding direction of the second transition slide table, one of the second locking pin and the second locking hole being provided on the first transition slide table or the second transition slide table, the other being provided on the barrel mounting slide table, the second locking pin being slidably inserted into the second locking hole to lock the barrel mounting slide table on the second transition slide table in an up-down direction when the barrel mounting slide table moves to the set packing position with the barrel.

As a further improvement, when one of the second locking pin and the second locking hole is provided on the first transition slide table, a second electric drive mechanism for driving the second transition slide table to slide reciprocally is provided between the first transition slide table and the second transition slide table, and the second transition slide table has a locking position for inserting the second locking pin and the second locking hole on a reciprocal sliding stroke thereof.

As a further improvement, a third electric driving mechanism for driving the lens barrel installation sliding table to reciprocate is arranged between the second transition sliding table and the lens barrel installation sliding table, and the lens barrel installation sliding table is provided with a lower limit which is pressed down on the second transition sliding table on the reciprocating lifting stroke of the lens barrel installation sliding table so as to enable the second locking pin and the second locking hole to be aligned up and down.

As a further improvement, a second electric driving mechanism for driving the second transition sliding table to slide reciprocally is arranged between the first transition sliding table and the second transition sliding table, a third electric driving mechanism for driving the lens barrel installation sliding table to lift reciprocally is arranged between the second transition sliding table and the lens barrel installation sliding table, the lens barrel installation sliding table is provided with a lower limit part which is pressed down on the second transition sliding table on the reciprocal lifting stroke of the lens barrel installation sliding table, the first transition sliding table is provided with an upper limit part, the lens barrel installation sliding table is provided with a lower pushing part, when the lens barrel installation sliding table is positioned at the lower limit part, the second transition sliding table is provided with a locking position on the reciprocal sliding stroke of the second transition sliding table which is positioned at the locking position is used for enabling the lower pushing part to move to a position which pushes up the upper limit part to limit the upward sliding of the lens barrel installation sliding table.

As a further improvement, in the sliding direction of the second transition sliding table, the upper limiting portion has an upper opposite end facing the lower pushing portion, the lower pushing portion has a lower opposite end facing the upper limiting portion, the upper opposite end has an upper guiding inclined plane and/or the lower opposite end has a lower guiding inclined plane, so that the lower opposite end is moved below the upper opposite end to enable the lower pushing portion to push the upper limiting portion upwards.

As a further improvement, the packing locking structure includes a locking pin, and movable locking holes respectively provided on the three sliding tables, the movable locking holes on the lens barrel mounting sliding table are fastening mounting holes for detachably fastening connection with the locking pins, when the lens barrel mounting sliding table drives the lens barrel to move to the set packing position, the three movable locking holes on the three sliding tables are correspondingly penetrated, and the locking pins are inserted into the three movable locking holes through one of the following modes to lock the three sliding tables on the fixed base: (1) The locking pins are used for being inserted into the three movable locking holes through the adaptive locking holes preset on the shell of the fundus camera; (2) The fixed base is provided with a fixed locking hole which is communicated with the three movable locking holes correspondingly, and the locking pin is driven by the electrically driven packing device to be inserted into the fixed locking hole and the three movable locking holes.

The second aspect of the present invention provides the following technical solutions: a fundus camera, comprising: a housing having a three-coordinate support platform for any of the above mentioned bottom cameras disposed therein; and the lens barrel is fixedly arranged on the lens barrel mounting sliding table of the three-coordinate supporting platform.

The beneficial effects are that: according to the fundus camera provided by the invention, when the lens barrel mounting sliding table moves to the set packing position along with the lens barrel, the three sliding tables on the three-coordinate supporting platform are locked on the fixed base by utilizing the packing locking structure arranged on the three-coordinate supporting platform, so that each sliding table does not slide freely, the lens barrel can be locked, and the fundus camera packing is realized. And, can utilize packing locking structure to release three slip table again to realize the eyeground camera unwrapping. The whole packing locking and unpacking explaining process is directly acted on the three sliding tables and is not acted on the lens barrel any more, so that when the three-coordinate supporting platform is matched with the lens barrels of different fundus cameras, a locking hole is not required to be specially arranged on the lens barrels, the universality of the three-coordinate supporting platform is improved, and the additional processing cost is reduced.

As an embodiment, the packing locking structure includes a first locking structure and a second locking structure, the first locking structure locks the two transition sliding tables sliding in the horizontal plane on the fixed base, and the second locking structure locks the lens barrel installation sliding table in the up-down direction, the first locking structure and the second locking structure respectively lock different sliding tables, so that the locking of the packing locking structure to the three sliding tables is simplified, and the precision of the first locking structure and the second locking structure can be relatively reduced.

As an embodiment, for the first locking structure, the two transition sliding tables are locked on the fixed base in a mode of matching the first locking holes with the locking pins, so that the structure is simple and convenient to realize. Moreover, the manual operation of the locking pin mode is convenient, and the electric driving packing device is convenient to drive the first locking pin or the first locking hole to lift.

As yet another embodiment, as for the second locking structure, it is possible to lock the barrel mounting slide on the second transition slide with a simpler structure by means of the second locking pin and the second locking hole being inserted. Further, when one of the second locking pin and the second locking hole is arranged on the first transition sliding table, the second transition sliding table is conveniently driven to move to the corresponding locking position by the second electric driving mechanism, so that the insertion and the matching of the second locking pin and the second locking hole are realized, and a device for driving the locking pin or the locking hole to stretch out and draw back is not required to be additionally arranged, so that the cost can be reduced, and the internal structure is simplified.

As another embodiment, the third electric driving mechanism is used for driving the lens barrel installation sliding table to prop down and press on the second transition sliding table to determine the lower limit of the lens barrel installation sliding table, and the second electric driving mechanism is used for driving the second transition sliding table to move to the locking position to realize that the lower pushing part pushes the upper limit part upwards so as to limit the lens barrel installation sliding table to slide upwards, so that limit locking of the lens barrel installation sliding table is realized in the vertical direction.

As another embodiment, the packing locking structure adopts the locking pin to be directly inserted into three movable locking holes on three sliding tables of the three-coordinate supporting platform, and the three sliding tables can be locked at one time no matter the locking pin is manually inserted from the outside of the fundus camera shell or the locking pin is driven to act by a corresponding electric driving packing device in the interior of the fundus camera shell. The assembly mode has higher requirement on the moving precision of the three sliding tables, and the three movable locking holes can be correspondingly communicated.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

fig. 1 is a schematic structural view of an embodiment of a fundus camera according to the present invention;

fig. 2 is another angular perspective view of the fundus camera shown in fig. 1;

FIG. 3 is a perspective view of the fundus camera of FIG. 1 at a further angle;

FIG. 4 is a schematic view of the electrically driven packing apparatus of FIG. 1;

FIG. 5 is a schematic view of the electrically driven packing apparatus of FIG. 4 illustrating a configuration in which the electrically driven packing apparatus drives the first locking pin to extend downward;

fig. 6 is a schematic structural view of another embodiment of a fundus camera according to the present invention;

fig. 7 is a schematic structural diagram of the lens barrel mounting sliding table in fig. 6 when the lens barrel mounting sliding table is at a lower limit.

Reference numerals illustrate:

1. a fixed base; 2. a first transition slipway; 3. a second transition slipway; 4. the lens barrel is provided with a sliding table; 5. a lens barrel; 6. a first electric drive mechanism; 7. a second electric drive mechanism; 8. a third electric drive mechanism; 9. an electrically driven baling device; 10. a first locking pin; 11. a first locking hole; 12. a second locking pin; 13. a second locking hole; 14. an upper limit part; 140. an upper guide slope; 15. a lower pushing part; 16. a motor mounting plate; 17. a first motor; 18. a second motor; 19. a third motor; 20. A front first baffle; 21. a rear first baffle; 22. a third baffle on the upper side; 23. a third baffle at the lower side; 24. a circuit board; 25. a mounting cylinder; 26. a mounting base; 27. a first two-channel photoelectric switch; 28. a second two-channel optoelectronic switch; 29. a third dual-channel photoelectric switch; 30. and a fourth two-channel photoelectric switch.

Detailed Description

The following description of the embodiments of the present invention will be made more complete and clear to those skilled in the art by reference to the figures of the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention aims at directly packing and locking on a three-coordinate supporting platform for supporting a lens cone, when the three-coordinate supporting platform is fixedly arranged on a lens cone mounting sliding table of the three-coordinate supporting platform, when the three sliding tables on the three-coordinate supporting platform are correspondingly locked on a fixed base by utilizing a packing and locking structure, the effective locking of the lens cone can be realized, special processing is not required for the lens cone and the shell, the three-coordinate supporting platform is convenient to be used for commonly using different types of fundus cameras, and the lens cone and the shell of the different types of fundus cameras are not required to be separately designed and processed in addition, so that the design cost of the different types of fundus cameras can be effectively reduced, and the three-coordinate packing and locking mechanism is suitable for industrialized mass production.

Having described the basic principles of the present invention, various non-limiting embodiments of the invention are described in detail below. Any number of elements in the figures are for illustration and not limitation, and any naming is used for distinction only and not for any limiting sense.

The principles and spirit of the present invention are explained in detail below with reference to several representative embodiments thereof.

The fundus camera provided by the invention comprises a shell, wherein a three-coordinate supporting platform is arranged in the shell, and a lens barrel serving as an imaging module is arranged on the three-coordinate supporting platform. The lens barrel is used as an imaging module, and an illumination assembly, a focusing assembly, a lens and a sensor fixation assembly are arranged in the lens barrel. The lens barrel may adopt the structure of the existing fundus camera, and detailed description thereof is omitted. The output end of the three-coordinate supporting platform is a lens barrel installation sliding table, and the lens barrel is fixedly installed on the lens barrel installation sliding table so as to drive the lens barrel to slide back and forth, left and right and up and down by the three-coordinate supporting platform, wherein the front and back direction and the left and right direction are both horizontal directions, and the up and down direction is a vertical direction. When the device is used, the lens barrel is driven to move by the three-coordinate supporting platform, so that the lens barrel can be used for photographing the pupils of an array tested person, and further, the fundus can be photographed for fundus examination.

The fundus camera provided by the invention is a further supplement and improvement of the existing fundus camera, and is mainly aimed at further improvement of a three-coordinate support platform on the fundus camera, and is specifically described below.

One way of assembling the three-coordinate support platform and the lens barrel is shown in fig. 1 to 3, the three-coordinate support platform specifically includes a fixed base, a first transition sliding table 2 and a second transition sliding table 3 which are sequentially stacked from bottom to top, in other words, the first transition sliding table 2 is stacked on the fixed base 1, the second transition sliding table 3 is stacked on the first transition sliding table 2, and the three sliding tables all extend horizontally to form a horizontal substrate. The fixed base 1 is used for being fixed inside a shell of the fundus camera, and can be detachably fixed inside the shell in a bolt connection mode. The first transition slide table 2 is reciprocally slidably mounted on the fixed base 1 in the front-rear direction, and the second transition slide table 3 is reciprocally slidably mounted on the first transition slide table 2 in the left-right direction. In addition, a barrel mounting slide 4 is also fitted on the second transition slide 3 to be liftable in the up-down direction, the barrel mounting slide 4 serving as an output end of the three-coordinate support platform for fixedly mounting a barrel 5 extending horizontally, and a circuit board 24 is also fixedly mounted on the top of the barrel mounting slide 4. By utilizing the relative sliding of the three horizontal substrates and the lens barrel mounting sliding table 4, the position of the lens barrel 5 can be adjusted in the front-back direction, the left-right direction and the up-down direction, so that the normal operation of the fundus camera is ensured. The three sliding tables are sequentially stacked up and down, and the design of arranging the lens barrel mounting sliding table 4 at the top is combined, so that the height of the three-coordinate supporting platform is as small as possible, the volume of the whole three-coordinate supporting platform can be effectively reduced, and the miniaturized design and assembly of the fundus camera are more facilitated.

Also, in the embodiment shown in fig. 1, a first electric drive mechanism 6 is provided between the fixed base 1 and the first transition slide table 2, and the first transition slide table 2 is driven by the first electric drive mechanism 6 to slide reciprocally in the front-rear direction, so that the first transition slide table 2 drives the barrel mounting slide table 4 through the second transition slide table 3 to slide reciprocally in the front-rear direction with the barrel. Further, a second electric drive mechanism 7 is provided between the first transition slide table 2 and the second transition slide table 3, and the second transition slide table 3 is driven by the second electric drive mechanism 7 to slide reciprocally in the left-right direction, so that the second transition slide table 3 can drive the barrel mounting slide table 4 to slide reciprocally in the left-right direction with the barrel 5. In addition, a third electric drive mechanism 8 is provided between the second transition slide table 3 and the barrel mounting slide table 4 so that the barrel mounting slide table 4 is driven by the third electric drive mechanism 8 to be reciprocally slidable in the up-down direction with the barrel 5.

In the embodiment shown in fig. 1 to 5, the first electric driving mechanism 6, the second electric driving mechanism 7 and the third electric driving mechanism 8 all adopt a stepping motor and lead screw nut mechanism to drive the corresponding sliding table to slide reciprocally. In other embodiments, the first electric driving mechanism, the second electric driving mechanism and the third electric driving mechanism can also use an electric push rod mechanism to drive the corresponding sliding table to slide reciprocally.

In order to conveniently control the positions of the first transition sliding table 2, the second transition sliding table 3 and the lens barrel installation sliding table 4, corresponding position detection devices are respectively arranged corresponding to the three sliding tables.

For detecting the position of the first transition slide table 2, a first position detection device is provided between the fixed base 1 and the first transition slide table 2. As shown in fig. 1 and 2, the first position detecting device specifically includes a first two-channel photoelectric switch 27, and a front first baffle 20 and a rear first baffle 21 that are used in cooperation, where the first two-channel photoelectric switch 27 is fixedly installed at an outer side of one end of the first transition sliding table 2 in the left-right direction, the front first baffle 20 and the rear first baffle 21 are fixedly installed at corresponding sides of the fixed base, and the front first baffle 20 and the rear first baffle 21 are distributed at intervals along the front-rear direction. The first two-channel photoelectric switch 27 is provided with two sensing light paths on one photoelectric switch. Corresponding to such a two-channel photoelectric switch, when the first transition slide table 2 moves forward to the set limit position, the sensing light path on the front side is blocked by the first blocking piece 20 on the front side, and the first two-channel photoelectric switch 27 outputs a corresponding signal to mark the position as the front side reference position. When the first transition sliding table 2 moves backward to the set limit position, the sensing light path at the rear side is blocked by the second blocking piece at the rear side, and the first dual-channel photoelectric switch 27 also outputs a corresponding signal and marks the corresponding position as the rear side position. By pre-marking the front-rear reference position, the front-rear movement stroke of the first transition slide table 2 can be determined. The first two-channel photoelectric switch 27 is matched with the two first baffle plates, and the first motor 17 can be driven to drive the first transition sliding table 2 to precisely move to any position in the forward and backward movement travel by sending an instruction to the first motor 17 of the first electric driving mechanism 6.

In order to facilitate timely monitoring of the left-right sliding position of the second transition sliding table 3, a second position detection device is arranged between the first transition sliding table 2 and the second transition sliding table 3. In the embodiment shown in fig. 3, the second position detecting device specifically includes a second dual-channel photoelectric switch 28, and a left second baffle and a right second baffle that are used in cooperation, where the second dual-channel photoelectric switch 28 is fixedly installed outside one end of the first transition sliding table 2 in the front-rear direction, specifically is fixedly installed on the motor mounting plate 16 of the first transition sliding table 2, the left second baffle and the right second baffle are fixedly installed on corresponding sides of the second transition sliding table 3, and the left second baffle and the right second baffle are distributed at intervals along the left-right direction. The second two-channel photoelectric switch 28 is provided with two sensing light paths on one photoelectric switch. Corresponding to such a two-channel photoelectric switch, when the second transition slide table 3 moves leftwards to the set limit position, the sensing light path on the right side is blocked by the second blocking piece on the right side, and the second two-channel photoelectric switch 28 outputs a corresponding signal to mark the position as a left side reference position. When the second transition sliding table 3 moves to the right to the set limit position, the sensing light path on the left side is blocked by the second blocking piece on the left side, and the second double-channel photoelectric switch 28 also outputs a corresponding signal and marks the corresponding position as a rear side reference position. By pre-marking the left and right reference positions, the left and right movement stroke of the second transition slide table 3 can be determined. The second double-channel photoelectric switch 28 is matched with the two second baffle plates, and the second motor 18 can be driven to drive the second transition sliding table 3 to precisely move to any position in the left-right movement stroke by sending an instruction to the second motor 18 of the second electric driving mechanism 7.

In order to facilitate timely monitoring of the up-down lifting position of the lens barrel installation sliding table 4, a third position detection device is arranged between the lens barrel installation sliding table 4 and the second transition sliding table 3. In the embodiment shown in fig. 3, the third position detecting device specifically includes a third two-channel photoelectric switch 29, and an upper third baffle 22 and a lower third baffle 23 that are used in cooperation, where the third two-channel photoelectric switch 29 is fixedly installed on the outer side of one vertical guide of the second transition sliding table 3, and the upper third baffle 22 and the lower third baffle 23 are fixedly installed on the corresponding sides of the barrel installation sliding table 4. The upper third flap 22 and the lower third flap 23 are spaced apart from each other in the up-down direction. The third two-channel photoelectric switch 29 is provided with two sensing light paths on one photoelectric switch. Corresponding to such a two-channel photoelectric switch, when the barrel mounting slide table 4 moves up to the set limit position, the lower sensing light path is blocked by the lower third blocking piece 23, and the third two-channel photoelectric switch 29 outputs a corresponding signal, marking the position as the upper side reference position. When the lens barrel mounting slide table 4 moves down to the set limit position, the upper sensing light path is blocked by the upper third blocking piece 22, and the third dual-channel photoelectric switch 29 outputs a corresponding signal as well, and the corresponding position is marked as the lower side position. By pre-marking the front and rear reference positions, the up-down lift stroke of the barrel mounting slide table 4 can be determined. The third dual-channel photoelectric switch 29 is matched with the two third baffle plates, and the third motor 19 can be driven to drive the lens barrel mounting sliding table 4 to accurately move to any position in the up-down lifting travel by sending an instruction to the third motor 19 of the third electric driving mechanism.

In some embodiments as shown in fig. 1 to 3, the three position detection devices all use a dual-channel photoelectric switch and two blocking pieces to realize the position detection of the corresponding sliding table. In other embodiments, each position detecting device may also use two sets of photoelectric switches to be matched with two corresponding blocking pieces, and the two sets of photoelectric switches are distributed at intervals along the sliding direction of the corresponding sliding table, so as to be matched with the two matched blocking pieces in a one-to-one correspondence manner, so as to be used for marking the reference position of the corresponding sliding table. In still other embodiments, each position detection device may also employ a position detection device such as a magnetic induction switch.

In the specific implementation, the position detection device is combined with the stepping motor which is adopted by the electric driving mechanism and is convenient to control the rotating speed and the convenience of the stepping motor, so that the sliding speed and the sliding position of the corresponding sliding table can be accurately controlled.

As an embodiment of a three-coordinate support platform, the first transition sliding table 2 in fig. 1 can slide reciprocally in the front-back direction, the second transition sliding table 3 can slide reciprocally in the left-right direction, the lens barrel mounting sliding table 4 can lift reciprocally in the up-down direction, the first transition sliding table 2 and the second transition sliding table 3 serve as intermediate transition sliding tables, and finally, the lens barrel mounting sliding table 4 carries the lens barrel 5 to move and adjust in the front-back direction, the left-right direction and the up-down direction. Here, the front-rear direction, the left-right direction, and the up-down direction are perpendicular to each other, and XYZ three coordinates may be corresponded to realize the reciprocating movement of the barrel-mounting slide table 4 in the three-coordinate direction.

As another embodiment, the first transition sliding table may be slid in the left-right direction, and the second transition sliding table may be slid in the front-rear direction, and the barrel mounting sliding table may be still liftably mounted on the second transition sliding table. As another embodiment, the first transition slide table may be lifted and lowered in the up-down direction, one of the second transition slide table and the barrel mounting slide table may be slid in the front-rear direction, and the other may be slid in the left-right direction, in other words, the first transition slide table may be lifted and lowered on the fixed base, the second transition slide table may be mounted on the first transition slide table in a manner of being slid back and forth in the horizontal plane, and the barrel mounting slide table may be mounted on the second transition slide table in a manner of being slid back and forth in the horizontal plane. As another implementation mode, the second transition sliding table can be lifted up and down, one of the first transition sliding table and the lens barrel installation sliding table slides in the front-back direction, the other one slides in the left-right direction, when the lens barrel installation sliding table is in practical implementation, the first transition sliding table can be installed on the fixed base in a reciprocating sliding manner in a horizontal plane, the second transition sliding table is installed on the first transition sliding table in a lifting manner in the up-down direction, and the lens barrel installation sliding table can be installed on the second transition sliding table in a reciprocating sliding manner in the horizontal plane. In any embodiment, the three sliding tables reciprocally slide in the front-rear direction, the left-right direction, and the up-down direction in a one-to-one correspondence manner, so that the barrel mounting sliding table serving as the output end of the three-coordinate support platform can reciprocally slide in the front-rear direction, the left-right direction, and the up-down direction.

The three-coordinate supporting platform can meet the requirement of the reciprocating movement of the lens barrel in the three-coordinate direction and the normal work of the fundus camera. In the case of a fundus camera, it is required to be in a normal use state when it is in normal operation, and at this time, the lens barrel can be freely reciprocated in a three-coordinate direction. And in the transportation state, for example, in long-distance transportation or temporary moving of the position of the fundus camera, the lens barrel of the fundus camera cannot be in a freely movable state at any time, and the lens barrel needs to be fixed, so that accidental damage caused by random movement of the lens barrel in the transportation process is avoided, and the fundus camera needs to be packaged. And when the machine is started to work normally after the transfer is finished, unpacking the bottom-of-eye camera.

In order to facilitate packaging and unpacking of the fundus camera, in the embodiment shown in fig. 1 to 3, a packaging locking structure is provided on the three-coordinate support platform, and when the lens barrel mounting sliding table 4 moves to a set packaging position with the lens barrel 5 to achieve packaging of the fundus camera, the packaging locking structure is used for locking three sliding tables on the three-coordinate support platform on the fixed base, and can unlock and release the three sliding tables to achieve unpacking of the fundus camera. That is, as for the three-coordinate support platform, the three-coordinate support platform can move the lens barrel 5 to the set packing position according to the preset control manner, and lock the three sliding tables by the packing locking structure to achieve packing locking.

In the concrete implementation, each sliding table of the three-coordinate supporting platform can realize the position control of the corresponding sliding table by means of the corresponding position detection device, and then the lens barrel can be accurately moved to the set packing position.

In the embodiment shown in fig. 1 to 3, the packing locking structure comprises in particular a first locking structure and a second locking structure arranged separately. Wherein, first locking structure arranges between fixed base 1 and second transition slip table 3, when realizing fundus camera packing, first locking structure is used for locking second transition slip table 3 and first transition slip table 2 on fixed base 1 in fore-and-aft direction and left-right direction. The second locking structure is used for locking the lens barrel mounting sliding table 4 on the second transition sliding table 3 along the up-down direction when the packaging of the fundus camera is realized.

Specifically, the first locking structure includes a first locking pin 10 and a first locking hole 11 for mating insertion. As shown in fig. 1 and 2, the second transition sliding table 3 is fixedly provided with an electrically driven packing device 9, a power output part of the electrically driven packing device 9 is integrally or separately fixedly provided with a first locking pin 10, and the electrically driven packing device 9 drives the first locking pin 10 to move up and down, so that the first locking pin 10 is installed on the second transition sliding table 3 in an up and down direction in a liftable manner. Correspondingly, a locking cylinder is arranged on the fixed base 1, the locking cylinder extends along the up-down direction, and an inner hole of the locking cylinder is used as a first locking hole 11 for inserting and extracting the first locking pin 10.

When the lens barrel mounting sliding table 4 moves to a set packing position with the lens barrel 5, the first locking pins 10 are aligned with the first locking holes 11 in the up-down direction, and the first locking pins 10 are driven by the electric driving packing device 9 to extend downwards so as to be inserted into the first locking holes 11, so that the first transition sliding table 2 and the second transition sliding table 3 can be locked on the fixed base on the horizontal plane.

In the embodiment shown in fig. 1 and 2, both the first transition slide table 2 and the second transition slide table 3 are free to slide in the horizontal direction, and therefore, when the first locking pins 10 extending in the up-down direction are inserted into the first locking holes 11, the first transition slide table 2 and the second transition slide table 3 can be simultaneously locked in the horizontal direction.

In a specific implementation, the first locking pin 10 may be arranged on the second transition slide table 3 as shown in fig. 2. As another embodiment, the first locking hole may be disposed on the second transition slide table, and the electrically driven packing device may be disposed on the fixed base, and the electrically driven packing device may drive the first locking pin to protrude upward to be inserted into the first locking hole when the first locking hole corresponds to the first locking pin in the up-down direction, or may lock the first transition slide table and the second transition slide table on the fixed base in the horizontal plane.

The electrically driven packing device 9 has a structure as shown in fig. 4 and 5, and includes a mounting base 26, a screw motor is fixedly mounted on the mounting base 26, and the screw motor directly drives the first locking pin 10 to move up and down. As shown in fig. 4, the screw motor drives the first locking pin 10 to retract upward, and as shown in fig. 5, the screw motor drives the first locking pin 10 to extend downward. In addition, the electrically driven packing device 9 has a packing position detecting device for outputting a signal upon detecting that the first locking pin 10 is inserted downward into the first locking hole 11 so that the electrically driven packing device 9 controls the first locking pin 10 to stop downward. In a specific implementation, the packaging position detecting device may adopt a fourth dual-channel photoelectric switch 30 and an upper fourth baffle and a lower fourth baffle which are matched with the fourth dual-channel photoelectric switch, wherein the two fourth baffles are arranged on the mounting base 26 at intervals along the up-down direction, and when the screw motor drives the first locking pin 10 to move up and down, the fourth dual-channel photoelectric switch 30 moves up and down along with synchronization, so that when the screw motor is detected in place by the upper fourth baffle and the lower fourth baffle, the screw motor is controlled to stop working, and corresponding signals are transmitted to the control circuit, so that the control circuit can conveniently control the electric driving packaging device 9 to work.

In the assembly process, the mounting base 26 is fixedly mounted on the second transition sliding table 3, and the specific mounting position of the mounting base can be selected according to actual needs, so that the invention is not particularly limited.

In the embodiment shown in fig. 5, the electrically driven baling device 9 employs a lead screw motor. As another embodiment, the electrically driven bagging apparatus may also employ an electric push rod. The invention is not limited herein to the specific construction of the electrically driven packing apparatus.

In some embodiments, the first locking pin 10 is integrally provided directly on the power take-off of the electrically driven packing device 9, which may be directly machined. In other embodiments, the first locking pin may be fixedly mounted on the power take-off of the electrically driven packaging device in a separate manner, for example, by means of a threaded connection or a welded connection.

In some embodiments as shown in fig. 2, the first locking pin 10 is lifted by the electrically driven packing device 9. In other embodiments, the first locking pin may be fixedly arranged in the up-down direction, and the first locking hole may be driven by the electrically driven packing device to perform the up-down movement. In other words, either one of the first locking pin and the first locking hole may be moved up and down, and the other may be fixed. As another embodiment, the first locking pin and the first locking hole may be configured to be vertically retractable, which is not limited by the present invention.

In the embodiment shown in fig. 3, the second locking structure includes a second locking pin 12 and a second locking hole 13 for corresponding mating use, the second locking pin 12 and the second locking hole 13 each extend in the reciprocating sliding direction of the second transition slide table 3, and the second locking pin 12 and the second locking hole 13 each extend in the left-right direction in fig. 3. And, the second locking pin 12 is fixed on the barrel mounting slide 4, and the second locking hole 13 is fixed on the first transition slide 2.

Specifically, since the second locking pin 12 is fixed on the barrel mounting slide table 4, the second locking pin 12 can be lifted up and down following the barrel mounting slide table 4 by the third electric driving mechanism 8. When the barrel mount slide 4 is moved down to the lower limit position so that the second locking pins 12 can be aligned with the second locking holes 13 in the left-right direction, when the barrel mount slide 4 is moved to the set packing position with the barrel 5, the second electric drive mechanism 7 drives the second transition slide 3 to move left-right with the barrel mount slide 4 so that the second locking pins 12 are slidably inserted into the second locking holes 13, and the barrel mount slide 4 can be locked on the second transition slide 3 in the up-down direction. In other words, when the second locking hole 13 is provided on the first transition slide table 2, the second transition slide table 3 has a locking position for inserting the second locking pin 12 and the second locking hole 13 on its reciprocating sliding stroke, in other words, the second transition slide table 3 can be driven to move to the corresponding packing position with the barrel mounting slide table 4 by means of the second electric driving mechanism 7, no additional configuration of driving means is required, and a relative cost saving can be achieved.

The second transition slide table 3 is in the shape of a horizontal base plate as a whole, a motor mounting plate 16 extending in the up-down direction is fixedly arranged at one side of the second transition slide table 3 in the front-back direction, the motor mounting plate 16 is used for fixedly mounting a second motor 18 of the second electric driving mechanism 7, the second motor 18 is placed on one side of the motor mounting plate 16, a locking cylinder is arranged on the other side of the motor mounting plate 16, and an inner hole of the locking cylinder forms the second locking hole 13. Moreover, in order to ensure normal operation, the second locking hole 13 and the second locking pin 12 are arranged opposite to each other, so that the two are convenient to plug in.

In addition, in order to facilitate the plugging of the second locking hole 13 and the second locking pin 12, a flaring structure can be arranged at the orifice of the second locking hole 13, and the end part of the second locking pin is arranged to be conical, so that the assembly precision of the whole three-coordinate support platform can be relatively reduced.

In the embodiment shown in fig. 3, the second locking pin 12 is provided on the barrel mounting slide 4, and the second locking hole 13 is provided on the first transition slide 2. In other embodiments, the second locking pin may be disposed on the first transition sliding table, and the second locking hole may be disposed on the lens barrel installation sliding table, so that when the second electric driving mechanism drives the second transition sliding table to slide to the locking position along the left-right direction relative to the first transition sliding table, the second locking pin may be inserted into the second locking hole, so as to achieve up-down limiting of the lens barrel installation sliding table.

In fig. 3, the second locking hole 13 is arranged on the first transition slide table 2. In still other embodiments, the second locking hole may be disposed on the second transition sliding table, and the second locking pin may be further fixedly disposed on the lens barrel installation sliding table, where when the lens barrel installation sliding table descends in place, the second locking pin and the second locking hole are aligned up and down, and the second locking pin or the second locking hole needs to be driven to horizontally extend outwards by using the electric driving mechanism, so that the second locking pin and the second locking hole are correspondingly inserted and matched, and then the lens barrel installation sliding table is locked on the second transition sliding table in the up-down direction. As another embodiment, the second locking pin may be disposed on the second transition sliding table, and the second locking hole may be disposed on the lens barrel mounting sliding table, and the second locking pin or the second locking hole may be driven to extend and retract by using an electric driving mechanism, so as to achieve the insertion of the second locking pin and the second locking hole. In these solutions, an additional separate electric drive mechanism is required, which increases the cost.

In addition, in order to conveniently determine the lower limit of the lens barrel installation sliding table 4, the lower limit of the lens barrel installation sliding table 4 can be determined when the third electric driving mechanism 8 drives the lens barrel installation sliding table 4 to downwards push against the second transition sliding table 3, and the second locking pin 12 and the second locking hole 13 are designed to be aligned up and down. As shown in fig. 3, the lens barrel 5 mounting frame has a mounting cylinder 25, and the mounting cylinder 25 is used for fixedly assembling the lens barrel 5. When the lens barrel mounting sliding table 4 descends to the lower limit position, the mounting cylinder 25 descends to prop up and press on the second transition sliding table 3, so that the lens barrel mounting sliding table 4 can be kept at the lower limit position, and the lens barrel cannot be damaged. Moreover, by utilizing the cooperation of the second locking pin 12 and the second locking hole 13, the lens barrel installation sliding table 4 can be locked at the lower limit, so that the lens barrel 5 mounting frame is prevented from continuing to move randomly in the up-down direction along with the lens barrel 5, and finally the lens barrel 5 mounting frame is locked on the second transition sliding table 3.

As shown in the embodiment of fig. 1 to 3, when the second electric driving mechanism 7 drives the second transition sliding table 3 to slide to the corresponding locking position, not only the second locking pin 12 and the second locking hole 13 are inserted, but also the first locking pin 10 and the second locking hole 13 are positioned in the same plane in the sliding direction of the first transition sliding table 2, and then the first electric driving mechanism 6 drives the first transition sliding table 2 to move, so that the first locking pin 10 and the first locking hole 11 can be aligned up and down completely relatively quickly, and the insertion locking is convenient to realize.

In the embodiment of the second locking structure shown in fig. 6 and 7, an upper limit portion 14 is provided on the first transition sliding table 2, a lower pushing portion 15 is provided on the barrel mounting sliding table 4, the upper limit portion 14 has an upper opposite end facing the lower pushing portion 15 in the sliding direction of the second transition sliding table 3, the lower pushing portion 15 has a lower opposite end facing the upper limit portion 14, the upper opposite end has an upper guiding inclined surface 140, and the lower opposite end has a lower guiding inclined surface so that the lower opposite end moves below the upper opposite end and the lower pushing portion 15 pushes the upper limit portion 14 upward.

Likewise, a second motor 19 is fixedly installed on one side of the motor installation plate 16 on the first transition sliding table 2, and the other side is used for fixedly arranging the upper limit part 14.

In other words, as shown in fig. 7, when the third electric driving mechanism 8 is used to drive the barrel mounting slide 4 to move to the lower limit where the barrel mounting slide 4 is pushed down against the second transition slide 3, the mounting cylinder 25 of the barrel mounting slide 4 is pushed down against the second transition slide 3, the second transition slide 3 is driven by the second electric driving mechanism 7 to slide with the barrel mounting slide to the lock position on the reciprocating sliding stroke of the second transition slide 3, the second transition slide 3 in the lock position can move the lower guide inclined surface of the lower pushing part 15 below the upper guide inclined surface 140 of the upper limit part 14, so that the lower pushing part 15 can push up against the upper limit part 14 when the lower pushing part 15 and the upper limit part 14 move in opposite directions, and further the barrel mounting slide 4 can be limited to slide up.

By means of the cooperation of the upper limiting part 14 and the lower pushing part 15, the lens barrel installation sliding table 4 which is in the lower limit can be limited to slide upwards, and then the lens barrel installation sliding table 4 can be locked on the second transition sliding table 3 in the up-down direction.

In the embodiment shown in fig. 6 and 7, the upper opposing end of the upper stopper portion 14 has an upper guide slope 140, and the lower opposing end of the lower pushing portion has a lower guide slope. In other embodiments, only the upper opposite end may have an upper guiding slope, or only the lower opposite end may have a lower guiding slope, so that the lower pushing portion may push the upper limiting portion upward conveniently.

In addition, in the fundus camera embodiment shown in fig. 3 and 6, the second transition sliding table 3 is respectively provided with an avoidance hole for avoiding the corresponding structure on the lens barrel installation sliding table 4 and avoiding the second locking pin 12 and the lower pushing part 15, so that the second locking pin 12 and the lower pushing part 15 can freely lift relative to the second transition sliding table 3, and can be guaranteed to be matched with the second locking hole 13 and the upper limiting part 14 normally.

When the fundus camera shown in fig. 1 to 5 described above is packaged, the following packaging process can be referred to:

step one, after a corresponding control circuit in the fundus camera detects that the camera finishes shooting, the fundus camera enters a packaging mode.

Step two, the lens barrel mounting slide table 4 is driven by the third electric drive mechanism 8 to descend to the set position with the lens barrel 5 so that the second lock pins 12 and the second lock holes 13 are aligned in the up-down direction.

And thirdly, controlling the second electric driving mechanism 7 to drive the second transition sliding table 3 to move towards the second locking hole 13 along with the lens barrel mounting sliding table 4 and the lens barrel 5 until the second locking pin 12 is inserted into the second locking hole 13, so that the lens barrel mounting sliding table 4 can be locked on the second transition sliding table 3 in the up-down direction. It should be explained here that since the lens barrel mounting slide 4 is movable only in the up-down direction with respect to the second transition slide 3, when the lens barrel mounting slide 4 and the second transition slide 3 are relatively fixed by the second locking pin 12 and the second locking hole 13, the lens barrel mounting slide 4 can be locked on the second transition slide 3 in the front-rear direction, the left-right direction, and the up-down direction.

And step four, the first transition sliding table 2 is driven by the first electric driving mechanism 6 to move to a set position along with the second transition sliding table 3, so that the first locking pins 10 are aligned with the first locking holes 11 up and down.

And fifthly, the electrically driven packing device 9 drives the first locking pin 10 to be inserted into the first locking hole 11 so as to lock the first transition sliding table and the second transition sliding table on the fixed base 1 in the horizontal plane. It should be explained here that, since the first transition sliding table 2 and the second transition sliding table 3 can only slide in the horizontal plane relative to the fixed base 1, the first transition sliding table and the second transition sliding table can be limited in the horizontal plane by the up-down insertion of the first locking pin 10 and the first locking hole 11, and thus the first transition sliding table and the second transition sliding table can be locked on the fixed base 1 in an omnibearing manner.

When the second locking pin 12 and the second locking hole 13 are inserted and the first locking pin 10 and the first locking hole 11 are inserted, the three sliding tables of the whole three-coordinate support platform can be relatively locked on the fixed base 1, so that the fundus camera is in a packaging locking state, and all parts in the three-coordinate support platform and the lens barrel 5 are in a rigidly fixed state. In the transportation process, accidental damage caused by shaking displacement can not occur.

When the fundus camera is transferred in place and needs to be started to work, the following unpacking process can be referred to:

step one, a control circuit system of the fundus camera receives a shooting command and starts a unpacking mode.

And step two, the electrically driven packing device 9 drives the first locking pin 10 to move upwards so as to be separated from the first locking hole 11, and at the moment, the first transition sliding table 2 and the second transition sliding table 3 can slide freely in a horizontal plane.

And step three, the second transition sliding table 3 is driven by the second electric driving mechanism 7 to slide, so that the second locking pins 12 are separated from the second locking holes 13, and at the moment, the lens barrel mounting sliding table 4 can slide freely in the up-down direction.

The three sliding tables can be unlocked by utilizing the packing locking structure, unpacking operation is completed, and normal starting-up work of the fundus camera is ensured.

With respect to the fundus camera shown in fig. 6 and 7, when the lens barrel mounting slide 4 is required to be moved down to the lower limit and the second transition slide 3 is moved to the lock position during packaging, the lower pushing portion 15 on the lens barrel mounting slide 4 is pushed up to the upper limit portion 14, so that the lens barrel mounting slide 4 can be limited to slide up, and further the lens barrel mounting slide 4 can be locked to the lower limit, so that the lens barrel mounting slide 4 is locked to the second transition slide 3 in the up-down direction. When unpacking, the second transition sliding table 3 is driven by the second electric driving mechanism 7 to be positioned away from the unlocking, so that the lower pushing part 15 is separated from the upper limiting part 14 for unlocking, and the lens barrel mounting sliding table 4 can normally lift and slide.

In the embodiment shown in fig. 1 to 5, corresponding to the first to third electric driving mechanisms and the electric driving packing device, the first to fourth position detecting devices are correspondingly configured, so that the positions of the three sliding tables and the first locking pins can be precisely controlled, the control circuit is conveniently combined to realize the operation of non-inductive automatic packing and unpacking, and compared with the defect of complicated manual packing and unpacking operation, the automatic packing and unpacking operation is operated by the control circuit according to the preset fundus camera working mode, so that the automatic control is conveniently realized. The automatic packing mode can improve the stability of the machine, effectively avoid the problem of collision damage of the machine in the transportation process, and greatly reduce the damage rate of the machine. And because the machine is noninductive, the machine is imperceptible to a user, the difficulty of machine operation is greatly reduced, and the machine is convenient to popularize and apply.

In some of the embodiments provided above, the first locking structure employs a plug-in fit of the locking pin and the locking hole. In other embodiments, the first locking structure may also be in the form of a top-pressure locking. In specific implementation, the electrically driven packing device arranged on the second transition sliding table can drive the second locking pin to lift up and down, and the lower support top is arranged on the fixed base. When the fundus camera is packaged, the electrically-driven packaging device drives the second locking pin to extend downwards and push against the top of the lower support, and the second transition sliding table and the first transition sliding table can be locked on the fixed base by means of tight fastening assembly.

In some embodiments, one locking pin may be used to lock three slips simultaneously to the fixed base, as opposed to the manner in which the bale locking structure includes the first locking structure and the second locking structure described above. In this embodiment, the packing locking structure comprises a locking pin which can be telescoped by the electrically driven packing device. The packing locking structure further comprises a first transition sliding table, a second transition sliding table and a lens barrel installation sliding table, wherein movable locking holes are respectively formed in the first transition sliding table and the second transition sliding table. And the movable locking hole on the lens barrel mounting sliding table is a fastening mounting hole which is used for being detachably and fixedly connected with the locking pin.

And the fixed base is provided with fixed locking holes which are correspondingly communicated with the three movable locking holes on the three sliding tables, and when the lens barrel installation sliding table drives the lens barrel to move to the corresponding set packing position, the three movable locking holes on the three sliding tables are correspondingly communicated and aligned with the fixed locking holes on the fixed base. Then the electrically driven packing device drives the locking pins to be inserted into the fixed locking holes and the three movable locking holes and be detachably and fixedly connected with the movable locking holes on the lens barrel installation sliding table, so that the three sliding tables can be locked on the fixed base.

It should be noted that, when the locking pin is detachably and fixedly connected with the movable locking hole on the lens barrel installation sliding table, the lens barrel installation sliding table is locked with the fixed base together in three-coordinate direction, and then the two transition sliding tables can be locked by the lens barrel installation sliding table in turn.

The movable locking hole on the lens barrel mounting sliding table can be in tight fit and plug connection with the locking pin so as to be detachably and fixedly connected with the locking pin. Or the annular spring is preloaded in the movable locking hole on the lens barrel installation sliding table, the end part of the locking pin is provided with an annular groove, and when the locking pin is inserted into the movable locking hole on the lens barrel installation sliding table, the annular spring is clamped into the annular groove, so that the locking pin is tightly connected to realize packing locking. When unpacking is needed, the locking pin is forcibly pulled out of the movable locking hole on the lens barrel installation sliding table against the clamping resistance of the annular spring, and the annular spring can deform and withdraw from the annular groove.

When the packing locking structure of the three movable locking holes on the three sliding tables is implemented, when the fundus camera needs packing locking, the three sliding tables are correspondingly slipped so that the three movable locking holes are aligned with the fixed locking holes on the fixed base, and then the locking pins penetrate into the four locking holes. When unpacking is needed, the locking pins are driven to withdraw from the three locking holes. The mode is simple to control, and each sliding block is driven to slide according to a preset program. However, since the locking pins are inserted into a plurality of locking holes, the requirements on the position accuracy of each locking hole are relatively high, and the length of the locking pins and the whole volume of the fundus camera are also required correspondingly.

The electrically driven packing device for driving the locking pin to act can adopt a screw rod motor structure or an electric push rod structure, and only the locking pin can be driven to normally stretch and retract.

In some embodiments of the present invention mentioned above, the packing locking structure is directly arranged on the three-coordinate supporting platform inside the fundus camera housing, so that the three-coordinate supporting platform can be adapted to different types of lens barrels. And because the packing locking structure is arranged inside the shell, the shell of the fundus camera does not need to be perforated, the sealing performance of the fundus camera is kept, and the internal instrument is prevented from being interfered by the external environment.

The invention also provides a mode for manually locking the three-coordinate support platform, which comprises the following steps:

for a three-coordinate support platform, one locking pin can be used to lock three sliding tables on a fixed base at the same time. In this embodiment, the packing lock structure includes a lock pin that can be inserted and removed from the outside of the housing of the fundus camera by an operator at the time of packing. The packing locking structure further comprises a first transition sliding table, a second transition sliding table and a lens barrel installation sliding table, wherein movable locking holes are respectively formed in the first transition sliding table, the second transition sliding table and the lens barrel installation sliding table, and the movable locking holes in the lens barrel installation sliding table are fastening installation holes and are used for being detachably and fixedly connected with the locking pins.

The three movable locking holes on the three sliding tables are correspondingly communicated and aligned with the adaptive locking holes on the shell of the fundus camera when the lens barrel is driven by the lens barrel mounting sliding tables to move to the corresponding set packing positions. At this time, the operator inserts the locking pin into the three movable locking holes through the pre-arranged adapting locking holes on the shell, and is detachably and fixedly connected with the movable locking holes on the lens barrel mounting sliding table, so as to lock the three sliding tables on the fixed base.

The movable locking hole on the lens barrel mounting sliding table can be in threaded connection with the locking pin, can also be in tight fit and plug connection with the locking pin, and can be in detachable and fixed connection with the locking pin. Or the annular spring is preloaded in the movable locking hole on the lens barrel installation sliding table, the end part of the locking pin is provided with an annular groove, and when the locking pin is inserted into the movable locking hole on the lens barrel installation sliding table, the annular spring is clamped into the annular groove, so that the locking pin is tightly connected to realize packing locking. When unpacking is needed, the blocking acting force of the annular spring is overcome, the locking pin is forcibly pulled out of the movable locking hole on the lens barrel installation sliding table, and the annular spring can deform and withdraw from the annular groove.

When the packing locking structure of the three movable locking holes of the three sliding tables is implemented by directly penetrating the locking pins, when the fundus camera needs packing locking, the three sliding tables are correspondingly slipped firstly, so that the three movable locking holes are aligned with the adaptive locking holes on the shell, at the moment, the lens barrel mounting sliding table moves to a set packing position with the lens barrel to realize packing of the fundus camera, and an operator penetrates the locking pins into the four locking holes from the outer side of the shell. When unpacking is needed, an operator manually pulls the locking pins out of the four locking holes. The mode is simple to control, and all the sliding blocks are driven to slide according to a preset program. However, since the locking pins are inserted into a large number of locking holes, the position accuracy of each locking hole is required to be relatively high.

In the mode that the manual operation locking pin is inserted into the shell, the three sliding tables of the three-coordinate supporting platform are correspondingly locked on the fixed base, and the lens barrel can be reversely locked by the three-coordinate supporting platform. Meanwhile, the three-coordinate supporting platform is suitable for assembling different types of lens barrels, and a locking hole is not required to be additionally formed in the lens barrels, so that the lens barrels are prevented from being influenced, and the universality of the three-coordinate supporting platform is also conveniently improved.

The present invention also provides an embodiment of a three-coordinate support platform of a fundus camera, where the structure of the three-coordinate support platform is the same as that of any one of the above embodiments of a fundus camera, and detailed descriptions thereof are omitted herein.

The three-coordinate supporting platform provided by the invention is provided with the packing locking structure, so that the three-coordinate supporting platform can be conveniently matched with lens barrels of fundus cameras of different models, any punching processing is not required on the lens barrels, and the packing unpacking requirement of the fundus cameras can be met by utilizing the three-coordinate supporting platform.

Those skilled in the art will also appreciate from the foregoing description that terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," or "lateral" and the like, which indicate an azimuth or a positional relationship, are based on the azimuth or the positional relationship shown in the drawings of the present specification, which are for convenience only in describing aspects of the present invention and simplifying the description, and do not explicitly or implicitly refer to devices or elements having to have the specific azimuth, be constructed and operate in the specific azimuth, and thus the azimuth or positional relationship terms described above should not be interpreted or construed as limiting aspects of the present invention.

In addition, the terms "first" or "second" and the like used in the present specification to refer to the numbers or ordinal numbers are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present specification, the meaning of "plurality" means at least two, for example, two, three or more, etc., unless specifically defined otherwise.

While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Many modifications, changes, and substitutions will now occur to those skilled in the art without departing from the spirit and scope of the invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention. The appended claims are intended to define the scope of the invention and are therefore to cover all module forms, equivalents, or alternatives falling within the scope of the claims.

Claims

1. A three-coordinate support platform for a fundus camera, comprising:

the fixed base is used for being fixed on the shell of the fundus camera, three sliding tables capable of achieving three-coordinate movement are arranged on the fixed base, one of the three sliding tables is a lens barrel installation sliding table, and the lens barrel installation sliding table is used as an output end of a three-coordinate supporting platform for fixedly installing a lens barrel of the fundus camera; and

the packing locking structure is used for locking the three sliding tables on the fixed base when the lens barrel mounting sliding table moves to a set packing position with the lens barrel so as to pack the fundus camera, and unlocking and releasing the three sliding tables so as to unpack the fundus camera.

2. The three-coordinate support platform of the fundus camera according to claim 1, wherein the other two of the three sliding tables are a first transition sliding table and a second transition sliding table, the first transition sliding table is reciprocally movably assembled on the fixed base, the second transition sliding table is reciprocally movably assembled on the first transition sliding table, one of the first transition sliding table and the second transition sliding table is slidable in a front-rear direction, the other sliding table is slidable in a left-right direction, and the lens barrel mounting sliding table is liftably mounted on the second transition sliding table in an up-down direction;

The packing locking structure comprises a first locking structure and a second locking structure;

the first locking structure is arranged between the fixed base and the second transition sliding table and is used for locking the second transition sliding table and the first transition sliding table on the fixed base in the front-back direction and the left-right direction when the fundus camera is packaged;

the second locking structure is used for locking the lens barrel mounting sliding table on the second transition sliding table along the up-down direction when the fundus camera is packaged.

3. The three-coordinate support platform of the fundus camera according to claim 2, wherein the first locking structure includes a first locking pin extending in an up-down direction, one of the fixed base and the second transition slide is mounted with the first locking pin, the other is provided with a first locking hole for inserting and extracting the first locking pin, the first locking pin or the first locking hole is movable up and down in the up-down direction, and when the lens barrel mounting slide moves to the set packing position with the lens barrel, the first locking pin is aligned up and down with the first locking hole so that the first locking pin is inserted into the first locking hole to lock the second transition slide and the first transition slide on the fixed base.

4. A three-coordinate support platform of a fundus camera according to claim 3, wherein the first locking pin or the first locking hole is driven to rise and fall by an electrically driven packing device.

5. The three-coordinate support platform of claim 4, wherein the fixed base, the first transition sliding table and the second transition sliding table are horizontal substrates extending horizontally, the first transition sliding table and the second transition sliding table are sequentially stacked and arranged on the fixed base from bottom to top, the first locking pin is integrally or separately fixedly arranged on a power output part of the electric drive packing device, and the electric drive packing device is fixedly arranged on the second transition sliding table, so that the second locking pin is arranged on the second transition sliding table.

6. The three-coordinate support platform of the fundus camera according to claim 5, wherein the electrically driven packing means has packing position detecting means for outputting a signal when it is detected that the first locking pin is inserted downward into the first locking hole, so that the electrically driven packing means controls the first locking pin to stop downward.

7. The three-coordinate support platform of the fundus camera according to any one of claims 2 to 6, wherein the second locking structure includes a second locking pin and a second locking hole each extending in a reciprocating sliding direction of the second transition slide, one of the second locking pin and the second locking hole being provided on the first transition slide or the second transition slide, the other being provided on the barrel mount slide, the second locking pin being slidingly inserted into the second locking hole to lock the barrel mount slide on the second transition slide in an up-down direction when the barrel mount slide moves to the set packing position with the barrel.

8. The three-coordinate support platform of the fundus camera according to claim 7, wherein when one of the second locking pin and the second locking hole is provided on the first transition slide, a second electric driving mechanism for driving the second transition slide to reciprocate is provided between the first transition slide and the second transition slide, the second transition slide having a locking position for inserting the second locking pin and the second locking hole on a reciprocating sliding stroke thereof.

9. The fundus camera three-coordinate support platform according to claim 8, wherein a third electric driving mechanism for driving the lens barrel mounting slide to reciprocate is provided between the second transition slide and the lens barrel mounting slide, and the lens barrel mounting slide has a lower limit that is pressed down on the second transition slide on its reciprocating elevating stroke to vertically align the second locking pin and the second locking hole.

10. The three-coordinate support platform of any one of claims 2 to 6, wherein a second electric driving mechanism for driving the second transition sliding table to slide reciprocally is arranged between the first transition sliding table and the second transition sliding table, a third electric driving mechanism for driving the lens barrel installation sliding table to lift reciprocally is arranged between the second transition sliding table and the lens barrel installation sliding table, the lens barrel installation sliding table is provided with a lower limit pressing down on the second transition sliding table on a reciprocal lifting stroke thereof, an upper limit part is arranged on the first transition sliding table, a lower pushing part is arranged on the lens barrel installation sliding table, when the lens barrel installation sliding table is positioned at the lower limit part, the second transition sliding table is provided with a locking position on a reciprocal sliding stroke thereof, and the second transition sliding table positioned in the locking position is used for enabling the lower pushing part to move to a position pushing up the upper limit part to limit the upward sliding of the installation sliding table.

11. The fundus camera three-coordinate support platform according to claim 10, wherein in the second transition slide sliding direction, the upper limit portion has an upper facing end facing the lower pushing portion, the lower pushing portion has a lower facing end facing the upper limit portion, the upper facing end has an upper guide slope and/or the lower facing end has a lower guide slope so that the lower facing end moves below the upper facing end to push the lower pushing portion upward against the upper limit portion.

12. The three-coordinate support platform of a fundus camera according to claim 1, wherein the packing locking structure includes a locking pin, and movable locking holes respectively provided on the three slide tables, the movable locking holes on the lens barrel mounting slide table are fastening mounting holes for detachably fastening connection with the locking pins, when the lens barrel mounting slide table drives the lens barrel to move to the set packing position, the three movable locking holes on the three slide tables are correspondingly penetrated, and the locking pins are inserted into the three movable locking holes by one of the following ways to lock the three slide tables on the fixed base:

(1) The locking pins are used for being inserted into the three movable locking holes through the adaptive locking holes preset on the shell of the fundus camera;

(2) The fixed base is provided with a fixed locking hole which is communicated with the three movable locking holes correspondingly, and the locking pin is driven by the electrically driven packing device to be inserted into the fixed locking hole and the three movable locking holes.

13. A fundus camera, characterized in that: comprising the following steps:

a housing in which the three-coordinate support platform of the fundus camera of any of claims 1 to 12 is disposed; and

and the lens barrel is fixedly arranged on the lens barrel installation sliding table of the three-coordinate support platform.