CN213030624U - Self-adjusting chassis of computer optometry instrument - Google Patents
Self-adjusting chassis of computer optometry instrument Download PDFInfo
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- CN213030624U CN213030624U CN202020572262.6U CN202020572262U CN213030624U CN 213030624 U CN213030624 U CN 213030624U CN 202020572262 U CN202020572262 U CN 202020572262U CN 213030624 U CN213030624 U CN 213030624U
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Abstract
The utility model belongs to the technical field of computer optometry instruments, in particular to a self-adjusting chassis of a computer optometry instrument; the driving motors are symmetrically arranged on two sides of the front end of the base plate, and the output ends of the symmetrically arranged driving motors penetrate through the front end wall of the base plate and are connected with rotating worms; the rotating worm is rotatably arranged in the mounting rack, and the mounting rack is symmetrically fixed on the bottom end surface of the base plate; rotating screw rods are rotatably inserted in the vertical direction of the front end and the rear end of the symmetrically arranged mounting rack, and rotating worm gears are mounted at the top ends of the rotating screw rods; the rotating screw rod is connected with a base supporting block in a sliding mode through a screw rod sliding sleeve, and a cavity structure is arranged inside the base supporting block; the base supporting blocks are symmetrically arranged along the diagonal line of the base plate; the top end of the limiting guide rod is fixedly arranged at the bottom end of the mounting frame, and the bottom end of the limiting guide rod is inserted into the base supporting block in a sliding manner; the height of the seat or other devices does not need to be increased or reduced by an operator, and the optometry operation can be adapted to people with different heights.
Description
Technical Field
The utility model belongs to the technical field of the computer optometry appearance, specific self-adjusting chassis of computer optometry appearance that says so.
Background
The present computerized optometry instruments use an objective measurement mode, which projects an infrared image to the eye fundus of a person, generates a scattering image on the retina of the person, and objectively calculates the diopter of the eye by analyzing a measurement image acquired by a CCD.
During measurement, an operator lightly controls the front, back, left, right, up and down movement of the instrument by hand, captures the pupils of the eyes of a measured person, and presses a measurement key after aligning the pupils of the eyeballs, so that the measurement result can be immediately displayed on a screen.
Most of the existing computer optometry instruments are characterized in that a chassis is fixed on a supporting surface, then a person to be measured sits on a chair, and the head of the person to be measured is placed on a head support to perform optometry; for example, when some testees with heights higher than the standard height are met, the height of the chassis of the computer optometry instrument needs to be increased or shorter chairs need to be replaced, so that the optometry sitting posture of the testees is not facilitated, the operator is influenced to accurately optometry operation, and the stable supporting operation of the base plate on the optometry instrument is influenced.
SUMMERY OF THE UTILITY MODEL
In order to compensate the not enough of prior art, the utility model provides a self-adjusting chassis of computer optometry appearance, the utility model discloses mainly used solves and during the optometry operation of current computer optometry appearance, for example when meetting some heights and will be higher than standard height by the person, need increase the height on computer optometry appearance chassis or change shorter chair, not only is unfavorable for the optometry position of sitting by the person like this, influences the operator simultaneously and to accurate optometry operation, influences the stable supporting operation of base dish to optometry appearance simultaneously.
The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to a self-adjusting chassis of a computer optometry instrument, which comprises a base disk; the base disc is provided with a control unit, and the control unit is used for controlling the detection unit to move up, down, left and right; the detection unit is provided with a display screen; the front end of the base plate is provided with a head dragging unit; the base plate is provided with a telescopic adjusting mechanism, and the telescopic adjusting mechanism comprises a driving motor, a rotating worm, an installation frame, a rotating worm wheel, a rotating screw rod, a base supporting block and a limiting guide rod; the driving motors are symmetrically arranged on two sides of the front end of the base plate, and the output ends of the symmetrically arranged driving motors penetrate through the front end wall of the base plate and are connected with rotating worms; the rotating worm is rotatably arranged in the mounting rack, and the mounting rack is symmetrically fixed on the bottom end surface of the base plate; rotating screw rods are rotatably inserted in the vertical directions of the front end and the rear end of the symmetrically arranged mounting rack, and rotating worm gears are mounted at the top ends of the rotating screw rods; the rotating worm wheel is meshed with the rotating worm; the rotating screw rod is connected with a base supporting block in a sliding mode through a screw rod sliding sleeve, and a cavity structure is arranged inside the base supporting block; the base supporting blocks are symmetrically arranged along the diagonal line of the base plate; the top end of the limiting guide rod is fixedly arranged at the bottom end of the mounting frame, and the bottom end of the limiting guide rod is inserted into the base supporting block in a sliding manner; the symmetrically arranged driving motors are electrically connected to the control buttons on the side wall of the base plate through wires, and the control buttons are electrically connected with the control unit;
when the head dragging unit is suitable for crowds with higher heights, a user presses a control button to control a driving motor to rotate in the forward direction, the forward rotation of the control motor drives a rotating worm to rotate in the forward direction, the rotating worm drives a rotating lead screw to rotate through the rotating worm and the rotating worm wheel to be meshed with each other, the rotating lead screw is connected to a base supporting block through a lead screw sliding sleeve, a limiting guide rod is arranged on the base supporting block, the rotating lead screw rotates to drive the base supporting block to slide downwards along the rotating lead screw, the base supporting block arranged on the diagonal line of the bottom end face of the base plate slides downwards under the rotation of the rotating lead screw, the downwards sliding of the base supporting block plays a role of upwards supporting the base plate through the rotating lead screw, and the head dragging unit can support the heads of crowds with higher heights, the detection unit can conveniently detect the eyes of the patient; the height of the base plate can be adjusted through the telescopic adjusting mechanism, so that the head dragging unit on the computer optometry instrument can conveniently support the head of a crowd with a higher height, and the height of the seat or other devices is not required to be increased or reduced by an operator, so that the computer optometry instrument can adapt to the optometry operation of the crowds with different heights; simultaneously the base supporting shoe sets up along the diagonal symmetry of base plate, is convenient for carry out the outrigger to the base plate when upward movement, when preventing the base plate upward movement, produces the phenomenon of slope, and then influences the base plate and drags the outrigger of unit to optometry unit and head.
Preferably, an arc-shaped rubber shell is fixed on the bottom end face of the base supporting block, and a rubber suction piece is installed on the bottom end face of the arc-shaped rubber shell; the during operation, when the base supporting shoe extrudees the holding surface under the rotation that rotates the lead screw, the arc rubber shell that base supporting shoe bottom end face set up can drive the rubber and inhale the piece and adsorb on the holding surface under the effect of extrusion force, and then the arc rubber shell can be stabilized on adsorbing the holding surface with the base supporting shoe under the adsorption affinity of piece is inhaled to the rubber, when effectively preventing to rotate the lead screw and rotating downwards, because base supporting shoe and holding surface are fixed more pine, lead to the base supporting shoe to produce the phenomenon of rocking.
Preferably, the bottom end of the limiting guide rod is elastically connected to the upper end face of the rubber suction piece through an elastic rubber rod; during operation, when rotating lead screw forward and rotating and drive the base supporting shoe extrusion and support to the holding surface on, the bottom face of base supporting shoe can be kept away from to the bottom of spacing guide arm, and then spacing guide arm bottom is connected to the rubber through elasticity rubber pole and inhales the piece and can upwards mention formation negative pressure for the base supporting shoe can inhale the piece through rubber and adsorb on the supporting plane, and then increase the stable stay adjustment operation of base supporting shoe to the bed plate.
Preferably, a limiting spring is arranged between the upper end face of the rubber suction piece and the arc-shaped rubber shell, and the limiting spring is sleeved on the elastic rubber rod; when the piece was inhaled to elasticity rubber pole pulling rubber upwards, the spacing spring between piece and the arc rubber shell was inhaled to rubber can receive the extrusion force, and then the reaction force of spacing spring can be used in on the piece is inhaled to rubber, and then the increase rubber is inhaled the piece and is supported to the adsorption affinity of holding surface, further improves the stable absorption of arc rubber shell.
Preferably, the two bent sides of the base plate are fixedly provided with support tubes, and support columns are inserted in the support tubes in a sliding manner; the top end of the supporting column is connected to the top end of the supporting tube through a limiting spring; when the device works, when the driving motor rotates reversely, the driving motor can drive the rotating worm wheel to rotate through the rotating worm, the rotating screw rod can enable the base supporting block to slide upwards, and then the supporting columns arranged on two sides of the base disc can compress the belt supporting pipes under the action of gravity of the detection unit and the control unit, so that the supporting columns can play a role of stably supporting the base disc, the phenomenon that the base disc falls instantly due to the fact that the base disc does not have supporting force under the upward sliding of the rotating screw rod is effectively prevented, and the stable supporting effect of the base disc on the detection unit and the display screen is further influenced, and meanwhile, the stable adjustment of the base disc is influenced; when driving motor forward rotated simultaneously, it can drive the base supporting shoe and extrude the holding surface downwards to rotate the lead screw for rotate the lead screw and play the effect of stabilizing the support to the base dish, the support column is outside roll-off support tube under spacing spring's reaction force simultaneously, makes the support column can contact the holding surface all the time, and then plays the supporting role to the base dish after the adjustment.
Preferably, the bottom end of the supporting column is provided with an arc-shaped bowl opening disc, and the arc-shaped bowl opening disc is made of elastic rubber materials; during operation, when the support column compressed the support tube under the effect of gravity in, the arc bowl mouthful dish that sets up on the support column can adsorb the holding surface under the effect of extrusion for the support column can play the effect of steady contact with the holding surface, and then improves the stable support of support column to the base dish.
The utility model has the advantages as follows:
1. the utility model can adjust the height of the base plate through the telescopic adjusting mechanism, so that the head dragging unit on the computer optometry instrument can support the head of the crowd with higher height, and the height of the seat or other devices is not increased or reduced by operators, so that the computer optometry instrument can adapt to the crowds with different heights to perform optometry operation; simultaneously the base supporting shoe sets up along the diagonal symmetry of base plate, is convenient for carry out the outrigger to the base plate when upward movement, when preventing the base plate upward movement, produces the phenomenon of slope, and then influences the base plate and drags the outrigger of unit to optometry unit and head.
2. The utility model discloses a support column that the bed plate both sides set up can compress the area under display screen, detecting element and the control unit's action of gravity in the stay tube for the support column can play the effect of stabilizing support to the bed plate, prevent effectively that the base supporting shoe is under the upwards slip that rotates the lead screw, because the bed plate does not have the holding power, and lead to the phenomenon that the bed plate falls in the twinkling of an eye, and then influence the stabilizing support effect of bed plate to detecting element and display screen, influence the stable regulation of bed plate simultaneously.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a perspective view of the present invention;
fig. 2 is a front view of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
in the figure: the device comprises a base plate 1, a control unit 2, a detection unit 3, a display screen 4, a head dragging unit 5, a driving motor 6, a rotating worm 7, a mounting frame 8, a rotating worm wheel 9, a rotating screw rod 10, a base support block 11, a limiting guide rod 12, a control button 13, an arc-shaped rubber shell 14, a rubber suction sheet 15, an elastic rubber rod 16, a limiting spring 17, a support tube 18, a support column 19 and an arc-shaped bowl mouth plate 20.
Detailed Description
The self-adjusting chassis of a computer optometry instrument according to an embodiment of the present invention will be described below with reference to fig. 1 to 3.
As shown in fig. 1-3, the self-adjusting chassis of the computer optometry unit of the present invention comprises a base disk 1; the base plate 1 is provided with a control unit 2, and the control unit 2 is used for controlling the detection unit 3 to move up, down, left and right; the detection unit 3 is provided with a display screen 4; the front end of the base plate 1 is provided with a head dragging unit 5; the base plate 1 is provided with a telescopic adjusting mechanism, and the telescopic adjusting mechanism comprises a driving motor 6, a rotating worm 7, an installation frame 8, a rotating worm wheel 9, a rotating screw rod 10, a base supporting block 11 and a limiting guide rod 12; the driving motors 6 are symmetrically arranged on two sides of the front end of the base plate 1, and the output ends of the symmetrically arranged driving motors 6 penetrate through the front end wall of the base plate 1 and are connected with rotating worms 7; the rotating worm 7 is rotatably installed in the installation frame 8, and the installation frame 8 is symmetrically fixed on the bottom end face of the base plate 1; the symmetrically arranged vertical directions of the front end and the rear end of the mounting rack 8 are rotatably inserted with rotary screw rods 10, and the top ends of the rotary screw rods 10 are provided with rotary worm gears 9; the rotating worm wheel 9 is meshed with the rotating worm 7; the rotating screw rod 10 is connected with a base supporting block 11 in a sliding mode through a screw rod sliding sleeve, and the inside of the base supporting block 11 is of a cavity structure; the base supporting blocks 11 are symmetrically arranged along the diagonal line of the base plate 1; the top end of the limiting guide rod 12 is fixedly arranged at the bottom end of the mounting frame 8, and the bottom end of the limiting guide rod 12 is inserted into the base supporting block 11 in a sliding manner; the symmetrically arranged driving motors 6 are electrically connected to a control button 13 on the side wall of the base plate 1 through a lead, and the control button 13 is electrically connected with the control unit 2;
when the base plate 1 needs to be adjusted upwards, when the head dragging facilitating unit 5 is suitable for people with high height, a user presses the control button 13, the control button 13 controls the driving motor 6 to rotate in the forward direction, the forward rotation of the control motor can drive the rotating worm 7 to rotate in the forward direction, the rotating worm 7 is meshed with the rotating worm wheel 9, the rotating worm 7 can drive the rotating lead screw 10 to rotate through the rotating worm wheel 9, the rotating lead screw 10 is connected to the base support block 11 through the lead screw sliding sleeve, the base support block 11 is provided with the limiting guide rod 12, the rotating lead screw 10 can drive the base support block 11 to slide downwards along the rotating lead screw 10, the base support block 11 arranged on the diagonal line of the bottom end face of the base plate 1 can slide downwards under the rotation of the rotating lead screw 10, and the downward sliding of the base support block 11 can play a role of upwards supporting the base plate 1 through the rotating lead screw 10, the head dragging unit 5 can support the head of a person with a high height, and the detection unit 3 can conveniently detect the eyes of the patient; the height of the base plate 1 can be adjusted through the telescopic adjusting mechanism, so that the head dragging unit 5 on the computer optometry instrument can conveniently support the head of a crowd with a higher height, and the height of the seat or other devices is not required to be increased or reduced by an operator, so that the computer optometry instrument can adapt to the optometry operation of the crowds with different heights; simultaneously base support block 11 sets up along the diagonal symmetry of base plate 1, is convenient for carry out the outrigger to base plate 1 when the rebound, when preventing that base plate 1 from upwards moving, produces the phenomenon of slope, and then influences base plate 1 and drags the outrigger of unit 5 to optometry unit and head.
Preferably, an arc-shaped rubber shell 14 is fixed on the bottom end face of the base support block 11, and a rubber suction piece 15 is installed on the bottom end face of the arc-shaped rubber shell 14; the during operation, when base supporting shoe 11 extrudees the holding surface under the rotation that rotates lead screw 10, arc rubber shell 14 that base supporting shoe 11 bottom end face set up can drive rubber and inhale piece 15 and adsorb on the holding surface under the effect of extrusion force, and then arc rubber shell 14 can be stable on adsorbing the holding surface with base supporting shoe 11 under the adsorption affinity of piece 15 is inhaled to rubber, prevent effectively that rotation lead screw 10 from rotating downwards when rotating, because base supporting shoe 11 is fixed looser with the holding surface, lead to base supporting shoe 11 to produce the phenomenon of rocking.
Preferably, the bottom end of the limit guide rod 12 is elastically connected to the upper end surface of the rubber suction piece 15 through an elastic rubber rod 16; during operation, when rotating lead screw 10 forward rotation and driving base supporting shoe 11 extrusion and supporting to the holding surface on, the bottom of limit guide 12 can keep away from the bottom face of base supporting shoe 11, and then limit guide 12 bottom is connected to rubber through elasticity rubber pole 16 and inhales piece 15 and can upwards mention formation negative pressure for base supporting shoe 11 can inhale piece 15 through rubber and adsorb on the supporting plane, and then increase base supporting shoe 11 and to the stable stay adjustment operation of base dish 1.
Preferably, a limiting spring 17 is arranged between the upper end surface of the rubber suction piece 15 and the arc-shaped rubber shell 14, and the limiting spring 17 is sleeved on the elastic rubber rod 16; when piece 15 is inhaled to elasticity rubber pole 16 upwards pulling rubber, the spacing spring 17 between piece 15 and the arc rubber shell 14 can receive the extrusion force is inhaled to rubber, and then spacing spring 17's reaction force can act on piece 15 is inhaled to rubber, and then the increase rubber is inhaled piece 15 and to the adsorption affinity of holding surface, further improves the stable absorption support of arc rubber shell 14.
Preferably, the support tubes 18 are fixed on the bent edges at the two sides of the base plate 1, and the support tubes 18 are inserted with support columns 19 in a sliding manner; the top end of the supporting column 19 is connected to the top end of the supporting tube 18 through a limiting spring 17; when the automatic lifting device works, when the driving motor 6 rotates reversely, the driving motor 6 can drive the rotating worm wheel 9 to rotate through the rotating worm 7, the base supporting block 11 can slide upwards by rotating the screw rod 10, and then the supporting columns 19 arranged at two sides of the base disc 1 can compress the belt supporting tube 18 under the action of gravity of the display screen 4, the detection unit 3 and the control unit 2, so that the supporting columns 19 can play a role of stably supporting the base disc 1, the phenomenon that the base disc 1 instantly falls due to the fact that the base disc 1 does not have supporting force under the upward sliding of the rotating screw rod 10 is effectively prevented, and the stable supporting effect of the base disc 1 on the detection unit 3 and the display screen 4 is further influenced, and meanwhile, the stable adjustment of the base disc 1 is influenced; when driving motor 6 forward rotates simultaneously, rotate lead screw 10 and can drive base supporting shoe 11 and extrude the holding surface downwards for rotate lead screw 10 and play the effect of stabilizing the support to base plate 1, support column 19 slides out of stay tube 18 outside spacing spring 17's reaction force simultaneously, makes support column 19 contact the holding surface all the time, and then plays the supporting role to adjusted base plate 1.
Preferably, the bottom end of the supporting column 19 is provided with an arc-shaped bowl mouth disc 20, and the arc-shaped bowl mouth disc 20 is made of elastic rubber; during operation, when support column 19 compresses under the effect of gravity in supporting tube 18, arc bowl mouthful dish 20 that sets up on the support column 19 can adsorb the holding surface under the effect of extrusion for support column 19 can play the effect of steady contact with the holding surface, and then improves the stable support of support column 19 to base plate 1.
The specific working process is as follows:
when the base plate 1 needs to be adjusted upwards, when the head dragging facilitating unit 5 is suitable for people with high height, a user presses the control button 13, the control button 13 controls the driving motor 6 to rotate in the forward direction, the forward rotation of the control motor can drive the rotating worm 7 to rotate in the forward direction, the rotating worm 7 is meshed with the rotating worm wheel 9, the rotating worm 7 can drive the rotating lead screw 10 to rotate through the rotating worm wheel 9, the rotating lead screw 10 is connected to the base support block 11 through the lead screw sliding sleeve, the base support block 11 is provided with the limiting guide rod 12, the rotating lead screw 10 can drive the base support block 11 to slide downwards along the rotating lead screw 10, the base support block 11 arranged on the diagonal line of the bottom end face of the base plate 1 can slide downwards under the rotation of the rotating lead screw 10, and the downward sliding of the base support block 11 can play a role of upwards supporting the base plate 1 through the rotating lead screw 10, the head dragging unit 5 can support the head of a person with a high height, and the detection unit 3 can conveniently detect the eyes of the patient; when needing base plate 1 to remove downwards, driving motor 6 antiport rotates, rotates lead screw 10 and drives base supporting shoe 11 rebound, and support column 19 that base plate 1 both sides set up simultaneously can compress in taking stay tube 18 under display screen 4, detecting element 3 and the action of gravity of the control unit 2 for support column 19 can play the effect of outrigger to base plate 1, and then moves the adjustment downwards with base plate 1.
In the description of the present invention, it is to be understood that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like refer to the orientation or positional relationship shown in the drawings, which are used for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the scope of the invention.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. A self-adjusting chassis of a computer optometry instrument comprises a base disk (1); the base plate (1) is provided with a control unit (2), and the control unit (2) is used for controlling the detection unit (3) to move up, down, left and right; a display screen (4) is arranged on the detection unit (3); the front end of the base plate (1) is provided with a head dragging unit (5); the method is characterized in that: the base plate (1) is provided with a telescopic adjusting mechanism, and the telescopic adjusting mechanism comprises a driving motor (6), a rotating worm (7), an installation frame (8), a rotating worm wheel (9), a rotating screw rod (10), a base support block (11) and a limiting guide rod (12); the driving motors (6) are symmetrically arranged on two sides of the front end of the base plate (1), and the output ends of the symmetrically arranged driving motors (6) penetrate through the front end wall of the base plate (1) and are connected with rotating worms (7); the rotating worm (7) is rotatably arranged in the mounting rack (8), and the mounting rack (8) is symmetrically fixed on the bottom end surface of the base plate (1); rotating screw rods (10) are rotatably inserted in the vertical direction of the front end and the rear end of the symmetrically arranged mounting rack (8), and rotating worm gears (9) are mounted at the top ends of the rotating screw rods (10); the rotating worm wheel (9) is meshed with the rotating worm (7); the rotary screw rod (10) is connected with a base supporting block (11) in a sliding mode through a screw rod sliding sleeve, and the interior of the base supporting block (11) is of a cavity structure; the base supporting blocks (11) are symmetrically arranged along the diagonal line of the base plate (1); the top end of the limiting guide rod (12) is fixedly arranged at the bottom end of the mounting frame (8), and the bottom end of the limiting guide rod (12) is inserted into the base supporting block (11) in a sliding manner; the symmetrically arranged driving motors (6) are electrically connected to control buttons (13) on the side wall of the base plate (1) through wires, and the control buttons (13) are electrically connected with the control unit (2).
2. The self-adjusting chassis of a computer optometry unit of claim 1, wherein: an arc-shaped rubber shell (14) is fixed on the bottom end face of the base supporting block (11), and a rubber suction piece (15) is installed on the bottom end face of the arc-shaped rubber shell (14).
3. The self-adjusting chassis of a computer optometry unit of claim 2, wherein: the bottom end of the limiting guide rod (12) is elastically connected to the upper end face of the rubber suction piece (15) through an elastic rubber rod (16).
4. A self-adjusting chassis for a computer optometry unit according to claim 3, wherein: a limiting spring (17) is arranged between the upper end face of the rubber suction piece (15) and the arc-shaped rubber shell (14), and the limiting spring (17) is sleeved on the elastic rubber rod (16).
5. The self-adjusting chassis of a computer optometry unit of claim 1, wherein: support pipes (18) are fixed on the bent edges at the two sides of the base plate (1), and support columns (19) are inserted in the support pipes (18) in a sliding manner; the top end of the supporting column (19) is connected to the top end of the supporting tube (18) through a limiting spring (17).
6. The self-adjusting chassis of a computer optometry unit of claim 5, wherein: the bottom of support column (19) is provided with arc bowl mouthful dish (20), and arc bowl mouthful dish (20) set up to elastic rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020572262.6U CN213030624U (en) | 2020-04-16 | 2020-04-16 | Self-adjusting chassis of computer optometry instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020572262.6U CN213030624U (en) | 2020-04-16 | 2020-04-16 | Self-adjusting chassis of computer optometry instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213030624U true CN213030624U (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020572262.6U Active CN213030624U (en) | 2020-04-16 | 2020-04-16 | Self-adjusting chassis of computer optometry instrument |
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|---|---|
| CN (1) | CN213030624U (en) |
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2020
- 2020-04-16 CN CN202020572262.6U patent/CN213030624U/en active Active
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