CN215340489U

CN215340489U - Engineering projector lens structure

Info

Publication number: CN215340489U
Application number: CN202121487035.4U
Authority: CN
Inventors: 李泽太; 陈海洋; 兰旭阳
Original assignee: Shanxi Hanwei Laser Polytron Technologies Inc
Current assignee: Shanxi Hanwei Laser Polytron Technologies Inc
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2021-12-28
Anticipated expiration: 2031-07-01

Abstract

The utility model relates to an engineering projector, in particular to an engineering projector lens structure. The utility model provides a novel project projector lens structure for solving the problem that the existing projector lens structure has defects, and the project projector lens structure comprises a lens displacement adjusting component and a lens quick-release component, wherein the lens displacement adjusting component comprises a lens frame base, an X-direction sliding table, a Y-direction sliding table, an X-direction motor, a Y-direction motor, an X-direction nut, a Y-direction nut, an X-direction motor sliding block and a Y-direction motor sliding block; the lens quick-release assembly comprises an annular lens flange elastic sheet, an annular lens flange and an annular lens flange pressing ring plate, a plurality of flange chucks are arranged on the outer circumferential surface of the lens flange in a protruding mode, a plurality of elastic sheet chucks and a plurality of elastic sheet openings used for placing the elastic sheet chucks are arranged on the lens flange elastic sheet, an avoiding opening is formed in the sliding table in the Y direction, a chuck inlet is formed in the lens flange pressing ring, and a clamping groove is formed in the lens flange pressing ring plate. The utility model has simple structure and wide application range.

Description

Engineering projector lens structure

Technical Field

The utility model relates to an engineering projector, in particular to an engineering projector lens, and specifically relates to an engineering projector lens structure.

Background

Compared with the common projector, the project projector has larger projection area, longer distance and high light brightness, generally supports a multi-bulb mode, can better deal with large and variable installation environments, and is suitable for the fields of education, media, government and the like. With the increasing investment of urban capital construction in China, the demand on engineering projectors is also continuously increased.

In actual engineering, a lens of a common commercial projector is immobile, and an actual environment may require that the projector is immobile, but the lens is required to move up, down, left and right (hereinafter, the up-down direction in the figure is the Y direction, and the left-right direction is the X direction) to meet projection requirements; meanwhile, the lens structure of the projector in the prior art is directly fixed on the projector through screws, when the lens of the projector needs to be replaced by a long-focus lens or a short-focus lens, the screws need to be repeatedly disassembled and assembled, which wastes time and labor, and the working efficiency is low.

Disclosure of Invention

The utility model provides a new project projector lens structure for solving the problem that the existing projector lens structure has the defects.

The utility model is realized by adopting the following technical scheme: a projector lens structure comprises a lens displacement adjusting assembly and a lens quick-release assembly;

the lens displacement adjusting assembly comprises a lens frame base, an X-direction sliding table, a Y-direction sliding table, an X-direction motor fixedly connected on the lens frame base, a Y-direction motor fixedly connected on the X-direction sliding table, an X-direction nut, a Y-direction nut, an X-direction motor sliding block fixed on the X-direction sliding table and a Y-direction motor sliding block fixed on the Y-direction sliding table, wherein the middle parts of the lens frame base and the X-direction sliding table are respectively provided with a central through hole which is the same in diameter and coaxial, the X-direction sliding table is positioned on the upper surface of the lens frame base, the end surfaces of the X-direction sliding table parallel to the X direction are respectively and fixedly connected with a first sliding block and a second sliding block, the two ends of the Y direction of the upper surface of the lens frame base are respectively and fixedly connected with a first guide rail and a second guide rail which are matched with the first sliding block and the second sliding block, the axial directions of the first guide rail and the second guide rail are parallel to the X direction, the X-direction motor comprises an X-direction motor rotating shaft of which the axial direction is parallel to the X direction, the X-direction motor rotating shaft extends out of the X-direction motor to form an X-direction motor rotating shaft extension part, the X-direction motor rotating shaft extension part is provided with an external thread matched with an X-direction nut, the X-direction nut is screwed on the X-direction motor rotating shaft extension part, an X-direction motor sliding block is provided with an X-direction through hole for inserting the X-direction motor rotating shaft extension part, the X-direction motor rotating shaft extension part is inserted into the X-direction through hole, and the X-direction motor sliding block is fixedly connected with the X-direction nut; the Y-direction sliding table is annular, a plurality of fastening threaded holes are formed in the ring surface of the Y-direction sliding table, a third sliding block and a fourth sliding block are fixedly connected to two ends of the X direction of the Y-direction sliding table respectively, an inner ring of the Y-direction sliding table and a central through hole are the same in diameter and coaxial, a third guide rail and a fourth guide rail which are matched with the third sliding block and the fourth sliding block are fixedly connected to two ends of the X direction of the upper surface of the X-direction sliding table respectively, the axial direction of the third guide rail and the axial direction of the fourth guide rail are parallel to the Y direction, a Y-direction motor comprises a Y-direction motor rotating shaft of which the axial direction is parallel to the Y direction, the Y-direction motor rotating shaft extends outwards to a Y-direction motor to form a Y-direction motor rotating shaft extension part, an external thread which is matched with a Y-direction nut is arranged on the Y-direction motor rotating shaft extension part, and a Y-direction through hole for inserting the Y-direction motor rotating shaft extension part is formed in the Y-direction motor sliding block, the extension part of the rotating shaft of the Y-direction motor is inserted into the through hole in the Y direction, and the sliding block of the Y-direction motor is fixedly connected with the nut in the Y direction;

the lens quick-release assembly comprises an annular lens flange elastic sheet, an annular lens flange pressing ring plate and a plurality of fastening screws, wherein the lens flange comprises an annular plate, the inner circumferential surface of the annular plate extends into a step-shaped cylinder along the axial direction, a plurality of flange chucks are protruded outside the outer circumferential surface of the annular plate of the lens flange, a plurality of elastic sheet chucks and a plurality of elastic sheet openings for placing the elastic sheet chucks are arranged on the upper ring surface of the lens flange elastic sheet, the elastic sheet chucks are folding sheets formed by long sheets and short sheets, the long sheets and the annular surface of the lens flange elastic sheet are arranged in an obtuse angle, the short sheets face the direction of the elastic sheet openings and are perpendicular to the annular surface of the lens flange elastic sheet, the length of the short sheets is equal to the thickness of the flange chucks, a plurality of avoiding openings matched with the short sheets of the elastic sheet chucks are arranged on the annular surface of the Y-direction sliding table, the inner diameter of the lens flange pressing ring plate is matched with the outer diameter of the annular plate of the lens flange, the lens flange pressing ring plate has clamping slot in the lower ring surface and in the thickness direction, the clamping slot has depth equal to that of the short sheet, the clamping slot has inlet near the clamping slot and communicated with the clamping slot, the clamping slot has inlet in one side far away from the short sheet, the lens flange pressing ring plate has several elastic sheet through holes and clamping ring through holes in the ring surface, and the lens flange pressing ring plate are axially set successively Lens flange clamping ring is realized to first screw hole, lens flange shell fragment, the fixed connection of Y direction slip table, after the lens flange installation, the shell fragment dop pushes down to dodging the mouth, the flange dop is blocked in the draw-in groove, thereby make the annular slab of lens flange be fixed in between lens flange clamping ring board and the lens flange shell fragment, the stack shell of echelonment barrel is in the shell fragment through-hole of lens flange shell fragment in proper order the activity endotheca, in the central through-hole of Y direction slip table, before the lens flange installation, the shell fragment dop is original state and arranges in the draw-in groove.

The working principle of the lens displacement adjusting assembly is as follows: in the X direction: when the X-direction motor works, the X-direction motor is started, the rotating shaft of the X-direction motor rotates, the X-direction nut is fixed with the X-direction motor sliding block, the X-direction motor sliding block is fixed on the X-direction sliding table, and the X-direction nut cannot rotate along with the rotation of the X-direction motor rotating shaft, so that the X-direction nut can only move, the X-direction nut drives the X-direction motor sliding block to move, and the X-direction sliding table moves; y direction: during operation, Y direction motor starts, Y direction motor shaft rotates, because Y direction nut is fixed with Y direction motor slider, Y direction motor slider is fixed in X direction slip table, Y direction nut can not rotate along with Y direction motor shaft rotates, so Y direction nut can only remove, drive Y direction motor slider and also remove simultaneously, Y direction slip table removes, because third slider, the fourth slider all is fixed with Y direction slip table, so third slider, the fourth slider is the third guide rail, the fourth guide rail removes relatively, thereby realize the displacement adjustment of engineering projector camera lens in Y direction.

The working principle of the lens quick-release assembly is as follows: the lens flange pressing ring plate, the lens flange elastic sheet and the Y-direction sliding table are fixedly connected through fastening screws, at the moment, an elastic sheet chuck is arranged in the clamping groove, when a lens flange penetrates through the lens flange pressing ring plate, the flange chuck penetrates through a chuck inlet, then the lens flange rotates anticlockwise, the flange chuck is rotated into the clamping groove of the lens flange pressing ring plate, at the moment, the elastic sheet chuck is pressed downwards to an avoidance opening of the Y-direction sliding table towards the elastic sheet opening after being pressed, and the flange chuck is clamped between the elastic sheet chuck and the clamping groove, so that the annular plate of the lens flange is fixed between the lens flange pressing ring plate and the lens flange elastic sheet, and the fixed installation of the lens flange is realized; when the lens is required to be replaced, the lens flange is replaced by the lens flange matched with the lens after being detached, when the lens flange is detached, the lens flange only needs to be rotated clockwise, so that the flange clamping head is screwed to the clamping head inlet, the elastic sheet clamping head is restored to the original state, and at the moment, the lens flange can be taken down from the lens flange pressing ring plate.

The beneficial effects produced by the utility model are as follows:

1) according to the engineering projector lens structure, the electric displacement adjustment and the quick lens replacement of the engineering projector lens are realized through the lens displacement adjusting assembly and the lens quick-release assembly;

2) the engineering projector lens structure is simple in structure, high in operation stability, wide in application range, and high in popularization and practical application value, and can be used as an independent component to be matched with different engineering projectors.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the lens displacement adjustment assembly;

FIG. 3 is an exploded view of the lens quick release assembly;

FIG. 4 is a schematic diagram of a displacement adjustment structure of the sliding table in the X direction;

FIG. 5 is a schematic perspective view of a Y-direction slide table;

FIG. 6 is a schematic view of a lens flange compression ring in a three-dimensional structure;

FIG. 7 is the back of FIG. 6;

fig. 8 is a schematic perspective view of a lens flange spring.

In the figure: 1-lens frame base, 2-X direction sliding table, 3-Y direction sliding table, 4-X direction motor, 5-Y direction motor, 6-X direction nut, 7-Y direction nut, 8-X direction motor slide block, 9-Y direction motor slide block, 10-center through hole, 11-first slide block, 111-first hole, 12-second slide block, 121-second hole, 13-first guide rail, 131-first guide shaft, 132-first fixing base, 14-second guide rail, 141-second guide shaft, 142-second fixing base, 15-X direction motor rotating shaft extension, 16-fastening threaded hole, 17-third slide block, 171-third hole, 18-fourth slide block, 181-fourth hole, 19-third guide rail, 191-third guide shaft, 192-third fixing base, 20-fourth guide rail, 201-fourth guide shaft, 202-fourth fixing base, 21-Y direction motor rotating shaft extension, 22-lens flange elastic sheet, 221-elastic sheet opening, 222-long sheet, 223-short sheet, 224-elastic sheet through hole, 23-lens flange, 231-annular plate, 232-cylinder, 233-flange chuck, 24-lens flange pressing ring plate, 241-chuck inlet, 242-clamping groove, 243-pressing ring through hole, 25-fastening screw, 26-avoiding opening, 27-X direction motor fixing plate and 28-Y direction motor fixing plate.

Detailed Description

A projector lens structure comprises a lens displacement adjusting assembly and a lens quick-release assembly;

as shown in fig. 1, 2, 4, and 5, the lens shift adjusting assembly includes a lens holder base 1, an X-direction sliding table 2, a Y-direction sliding table 3, an X-direction motor 4 fixedly connected to the lens holder base 1, a Y-direction motor 5 fixedly connected to the X-direction sliding table 2, an X-direction nut 6, a Y-direction nut 7, an X-direction motor slider 8 fixed to the X-direction sliding table 2, and a Y-direction motor slider 9 fixed to the Y-direction sliding table 3, wherein the lens holder base 1 and the X-direction sliding table 2 are respectively provided at their middle portions with a central through hole 10 having the same diameter and the same axis, the X-direction sliding table 2 is located on the upper surface of the lens holder base 1, the end surfaces of the X-direction sliding table 2 parallel to the X-direction are respectively and fixedly connected with a first slider 11 and a second slider 12, and the two ends of the Y-direction of the upper surface of the lens holder base 1 are respectively and fixedly connected with a first guide rail 13 adapted to the first slider 11 and the second slider 12, The X-direction motor 4 comprises an X-direction motor rotating shaft, the axial direction of the X-direction motor rotating shaft is parallel to the X direction, the X-direction motor rotating shaft extends out of the X-direction motor 4 to form an X-direction motor rotating shaft extension portion 15, an external thread matched with the X-direction nut 6 is arranged on the X-direction motor rotating shaft extension portion 15, the X-direction nut 6 is screwed on the X-direction motor rotating shaft extension portion 15, an X-direction motor sliding block 8 is provided with an X-direction through hole used for penetrating the X-direction motor rotating shaft extension portion 15, the X-direction motor rotating shaft extension portion 15 is inserted into the X-direction through hole, and the X-direction motor sliding block 8 is fixedly connected with the X-direction nut 6; the Y-direction sliding table 3 is annular and the ring surface thereof is provided with a plurality of fastening threaded holes 16, the two ends of the X-direction of the Y-direction sliding table 3 are respectively and fixedly connected with a third slide block 17 and a fourth slide block 18, the inner ring of the Y-direction sliding table 3 has the same diameter and the same shaft as the central through hole 10, the two ends of the X-direction of the upper surface of the X-direction sliding table 2 are respectively and fixedly connected with a third guide rail 19 and a fourth guide rail 20 which are matched with the third slide block 17 and the fourth slide block 18, the axial directions of the third guide rail 19 and the fourth guide rail 20 are parallel to the Y direction, the Y-direction motor 5 comprises a Y-direction motor rotating shaft of which the axial direction is parallel to the Y direction, the Y-direction motor rotating shaft extends out of the Y-direction motor 5 to form a Y-direction motor rotating shaft extension 21, the Y-direction motor rotating shaft extension 21 is provided with an external thread which is matched with the Y-direction nut 7, the Y-direction nut 7 is screwed on the Y-direction motor rotating shaft extension 21, a Y-direction through hole for inserting the Y-direction motor rotating shaft extension part 21 is formed in the Y-direction motor sliding block 9, the Y-direction motor rotating shaft extension part 21 is inserted into the Y-direction through hole, and the Y-direction motor sliding block 9 is fixedly connected with the Y-direction nut 7;

as shown in fig. 3, 5, 6, 7, 8, the lens quick detach assembly includes an annular lens flange elastic sheet 22, an annular lens flange 23, an annular lens flange pressing ring plate 24, and a plurality of fastening screws 25, the lens flange 23 includes an annular plate 231, an inner circumferential surface of the annular plate 231 extends along an axial direction to form a step-shaped cylinder 232, an outer circumferential surface of the annular plate 231 of the lens flange 23 protrudes outward with a plurality of flange chucks 233, an upper circumferential surface of the lens flange 4 elastic sheet 22 is provided with a plurality of elastic sheet chucks and a plurality of elastic sheet openings 221 for placing the elastic sheet chucks, the elastic sheet chucks are folding sheets composed of a long sheet 222 and a short sheet 223, the long sheet 222 and the annular surface of the lens flange 4 elastic sheet 22 are arranged in an obtuse angle, the short sheet 223 faces the direction of the elastic sheet openings 221 and is perpendicular to the annular surface of the lens flange 4 elastic sheet 22, the length of the short sheet 223 is equal to the thickness of the flange chucks 233, the annular surface of the Y-direction sliding table 3 is provided with a plurality of avoiding openings 26 adapted to the elastic sheet 223, the inner diameter of the lens flange pressing ring plate 24 is matched with the outer diameter of the annular plate 231 of the lens flange 23, the annular surface of the lens flange pressing ring plate 24 is provided with a plurality of clamping head inlets 241 matched with the flange clamping heads 233, the lower annular surface of the lens flange pressing ring plate 24 is provided with clamping grooves 242 matched with the elastic sheet clamping heads of the lens flange elastic sheet 22 (the matching is that the length and the position of the clamping groove 242 are in one-to-one correspondence with the length and the position of the elastic sheet clamping heads) along the thickness direction of the lens flange pressing ring plate 24 on the lens flange 23 pressing ring plate, the groove depth of the clamping groove 242 is equal to the length of the short sheet 223, the clamping head inlets 241 are arranged adjacent to and communicated with the clamping groove 242, the clamping head inlets 241 are positioned at one side of the clamping groove 242 far away from the short sheet 223, the annular surfaces of the lens flange elastic sheet 22 and the lens flange pressing ring plate are respectively provided with a plurality of elastic sheet through holes 224 and pressing ring through holes 243 matched with the fastening threaded holes 16 of the Y-direction sliding table 3, lens flange shell fragment 22, lens flange clamping ring board 24 all are located Y direction slip table 3 and place in proper order along the axial, fastening screw 25 passes clamping ring through-hole 243 in proper order, shell fragment through-hole 224, first screw hole realizes lens flange 23 clamping ring, lens flange shell fragment 22, the fixed connection of Y direction slip table 3, after lens flange 23 installs, the shell fragment dop pushes down to dodging mouthful 26, flange dop 233 is blocked in draw-in groove 242, thereby make lens flange 23's annular plate 231 be fixed in between lens flange clamping ring board 24 and the lens flange shell fragment 22, the barrel of echelonment barrel 232 activity endotheca in lens flange shell fragment 22's shell fragment through-hole 224 in proper order, in the central through-hole 10 of Y direction slip table 3, before lens flange 23 installs, the shell fragment dop is original state and arranges in draw-in groove 242.

The working principle of the lens displacement adjusting assembly is as follows: in the X direction: during operation, the X-direction motor 4 is started, the rotating shaft of the X-direction motor 4 rotates, the X-direction nut 6 is fixed with the X-direction motor slider 8, the X-direction motor slider 8 is fixed on the X-direction sliding table 2, and the X-direction nut 6 cannot rotate along with the rotation of the rotating shaft of the X-direction motor 4, so that the X-direction nut 6 can only move, the X-direction nut 6 drives the X-direction motor slider 8 to move, and the X-direction sliding table 2 moves; y direction: during operation, Y direction motor 5 starts, Y direction motor 5 pivot rotates, because Y direction nut 7 is fixed with Y direction motor slider 9, Y direction motor slider 9 is fixed in X direction slip table 2, Y direction nut 7 can not rotate along with Y direction motor 5 pivot rotates, so Y direction nut 7 can only remove, drive Y direction motor slider 9 and also remove simultaneously, Y direction slip table 3 removes, because third slider 17, fourth slider 18 all are fixed with Y direction slip table 3, so third slider 17, fourth slider 18 remove relative third guide 19, fourth guide 20, thereby realize the displacement control of engineering projector camera lens in Y direction.

The working principle of the lens quick-release assembly is as follows: the lens flange pressing ring plate 24, the lens flange elastic sheet 22 and the Y-direction sliding table 3 are fixedly connected through a fastening screw 25, at the moment, an elastic sheet chuck is arranged in the clamping groove 242, when the lens flange 23 penetrates through the lens flange pressing ring plate 24, a flange chuck 233 penetrates through a chuck inlet 241, then the lens flange 23 rotates anticlockwise, the flange chuck 233 is rotated into the clamping groove 242 of the lens flange pressing ring plate 24, at the moment, the elastic sheet chuck is pressed downwards to the avoiding opening 26 of the Y-direction sliding table 3 towards the direction of the elastic sheet opening 221 after being pressed, the flange chuck 233 is clamped between the elastic sheet chuck and the clamping groove 242, so that the annular plate 231 of the lens flange 23 is fixed between the lens flange pressing ring plate 24 and the lens flange elastic sheet 22, and the lens flange 23 is fixedly installed; when the lens is required to be replaced, the lens flange 23 is only required to be replaced by the lens flange 23 matched with the lens after being detached, when the lens flange 23 is detached, the lens flange 23 only needs to be rotated clockwise, so that the flange clamping head 233 is screwed to the clamping head inlet 241, the elastic sheet clamping head is restored to the original state, and at the moment, the lens flange 23 can be taken down from the lens flange pressing ring plate 24.

As shown in fig. 1 to 8, in specific implementation, the six fastening threaded holes 16 are uniformly distributed around the ring surface of the Y-direction sliding table 3, so that the fixed connection structure of the lens flange pressing ring plate 24, the lens flange elastic sheet 22 and the Y-direction sliding table 3 is more stable, and the stability of the lens structure of the engineering projector is improved.

As shown in fig. 1, fig. 2, fig. 4, and fig. 5, in a specific implementation, the first guide rail 13 includes a first guide shaft 131 and two first fixing seats 132 respectively located at two ends of the first guide shaft 131 and used for supporting and fixing the first guide shaft 131, the first slider 11 is a square body, the first slider 11 is provided with a first hole 111 for inserting the first guide shaft 131, and the first guide shaft 131 is inserted into the first hole 111 of the first slider 11, so that the first slider 11 and the first guide shaft 131 form a guide rail pair; the second guide rail 14 includes a second guide shaft 141 and two second fixing seats 142 respectively located at two ends of the second guide shaft 141 and used for supporting and fixing the second guide shaft 141, the second slider 12 is a square body, the second slider 12 is provided with a second hole 121 for inserting the second guide shaft 141, and the second guide shaft 141 is inserted into the second hole 121 of the second slider 12, so that the second slider 12 and the second guide shaft 141 form a guide rail pair. The third guide rail 19 includes a third guide shaft 191 and two third fixing seats 192 respectively located at two ends of the third guide shaft 191 and used for supporting and fixing the third guide shaft 191, the third slider 17 is a square body, a third hole 171 used for inserting the third guide shaft 191 into the third slider 17 is arranged on the third slider 17, and the third guide shaft 191 is inserted into the third hole 171 of the third slider 17, so that the third slider 17 and the third guide shaft 191 form a guide rail pair; the fourth guide rail 20 includes a fourth guide shaft 201 and two fourth fixing seats 202 respectively located at two ends of the fourth guide shaft 201 and used for supporting and fixing the fourth guide shaft 201, the fourth slider 18 is a square body, a fourth hole 181 used for inserting the fourth guide shaft 201 is formed in the fourth slider 18, and the fourth guide shaft 201 is inserted into the fourth slider 18, so that the fourth slider 18 and the fourth guide shaft 201 form a guide rail pair, and the guide rail and the slider structure are more standardized and embodied.

As shown in fig. 1, 2, 4, and 5, in specific implementation, the first fixing seat 132 is a square body and is provided with a first threaded hole thereon, the upper and lower portions of the two ends of the first guide shaft 131 are both provided with notches, the portions of the two ends of the first guide shaft 131 except for the notches are both provided with first through holes, and a first screw passes through the first through hole and the first threaded hole, so as to fix the first guide shaft 131 and the first fixing seat 132; the second fixing seat 142 is a square body, the upper surface of the second fixing seat 142 is provided with a groove for positioning the second guide shaft 141, the bottom of the groove is provided with a second threaded hole, the upper part and the lower part of the two ends of the second guide shaft 141 are both provided with notches, the parts of the two ends of the second guide shaft 141 except the notches are both provided with second through holes, and a second screw passes through the second through holes and the second threaded hole to fix the second guide shaft 141 and the second fixing seat 142. The first through hole has a diameter greater than the outer diameter of the first screw, and is configured such that the parallelism of the first guide shaft 131 and the second guide shaft 141 can be adjusted by adjusting the position of the first guide shaft 131.

As shown in fig. 1, 2, 4, and 5, in specific implementation, the third fixing seat 192 is a square body and is provided with a third threaded hole thereon, upper and lower portions of two ends of the third guide shaft 191 are both provided with notches, portions of two ends of the third guide shaft 191, except for the notches, are both provided with third through holes, and a third screw passes through the third through holes and the third threaded hole, so as to fix the third guide shaft 191 and the third fixing seat 192; fourth fixing base 202 is a cuboid, the upper surface of fourth fixing base 202 is equipped with the recess that is used for fixing a position fourth guide shaft 201, the recess bottom is equipped with the fourth screw hole, the upper and lower part at the both ends of fourth guide shaft 201 all is equipped with the breach, the part except that the breach at the both ends of fourth guide shaft 201 all is equipped with the fourth through-hole, the fourth screw passes the fourth through-hole, behind the fourth screw hole, thereby it is fixed with fourth guide shaft 201 and fourth fixing base 202, the diameter of third through-hole is greater than the external diameter of third screw, such structure makes mutual depth of parallelism accessible between third guide shaft 191 and the fourth guide shaft 201 adjust the position of third guide shaft 191.

As shown in fig. 1, 2, 4, and 5, in specific implementation, the four corners of the lens holder base 1 are respectively provided with a back focus through hole and a back focus threaded hole, a back focus reducing adjusting screw is arranged in the back focus through hole, an increase back focus adjusting screw is arranged in the back focus threaded hole, and the length of the back focus reducing adjusting screw is greater than the length of the increase back focus adjusting screw. When the projector lens frame base is used, the four corners of the projector base are respectively provided with base threaded holes matched with the reduced back focus adjusting screws, the reduced back focus adjusting screws are screwed towards one direction, the increased back focus adjusting screws are unscrewed or the increased back focus adjusting screws are removed, so that when the distance between the lens frame base 1 and the projector base is reduced, the distance between a lens and an imaging chip is reduced, and the back focus is reduced; and screwing the back focus reducing adjusting screw towards the other direction and screwing the back focus increasing adjusting screw to the back focus increasing screw at the same time, so that the distance between the projector base and the lens frame base 1 is increased, namely the distance between the lens and the imaging chip is increased, and the back focus is increased.

As shown in fig. 1, 2, 4, and 5, in this embodiment, the lens displacement adjusting assembly further includes an X-direction motor fixing plate 27 and a Y-direction motor fixing plate 28, the X-direction motor fixing plate 27 is a vertical folded plate formed by a first long plate and a first short plate, the first long plate is fixedly connected to an end surface of the X-direction motor 4, and the first short plate is fixedly connected to the lens frame base 1, so as to fixedly connect the X-direction motor 4 to the lens frame base 1; the Y-direction motor fixing plate 28 is a vertical folded plate formed by a second long plate and a second short plate, the second long plate is fixedly connected with the end face of the Y-direction motor 5, the second short plate is fixedly connected with the X-direction sliding table 2, so that the Y-direction motor 5 is fixedly connected with the X-direction sliding table 2, and the lens structure of the engineering projector is standardized and specified, so that the structure is more stable.

Claims

1. A lens structure of an engineering projector is characterized by comprising a lens displacement adjusting assembly and a lens quick-release assembly;

the lens displacement adjusting assembly comprises a lens frame base (1), an X-direction sliding table (2), a Y-direction sliding table (3), an X-direction motor (4) fixedly connected to the lens frame base (1), a Y-direction motor (5) fixedly connected to the X-direction sliding table (2), an X-direction nut (6), a Y-direction nut (7), an X-direction motor sliding block (8) fixed to the X-direction sliding table (2), and a Y-direction motor sliding block (9) fixed to the Y-direction sliding table (3), the lens frame base (1), the middle of the X-direction sliding table (2) is provided with a central through hole (10) which is the same in diameter and coaxial, the X-direction sliding table (2) is located on the upper surface of the lens frame base (1), the end surface parallel to the X direction of the X-direction sliding table (2) is fixedly connected with a first sliding block (11) and a second sliding block (12) respectively, two ends of the Y direction on the upper surface of the lens frame base (1) in the Y direction are fixedly connected with the first sliding block (11) respectively, The first guide rail (13) and the second guide rail (14) are matched with the second sliding block (12), the first guide rail (13) and the second guide rail (14) are parallel to the X direction in the axial direction, the X direction motor (4) comprises an X direction motor rotating shaft parallel to the X direction in the axial direction, the X direction motor rotating shaft extends outwards from the X direction motor (4) to form an X direction motor rotating shaft extension part (15), an external thread matched with the X direction nut (6) is arranged on the X direction motor rotating shaft extension part (15), the X direction nut (6) is screwed on the X direction motor rotating shaft extension part (15), an X direction through hole used for penetrating the X direction motor rotating shaft extension part (15) is formed in the X direction motor sliding block (8), the X direction motor rotating shaft extension part (15) is inserted into the X direction through hole, and the X direction motor sliding block (8) is fixedly connected with the X direction nut (6); the Y-direction sliding table (3) is annular, a plurality of fastening threaded holes (16) are formed in the annular surface of the Y-direction sliding table, a third sliding block (17) and a fourth sliding block (18) are fixedly connected to two ends of the Y-direction sliding table (3) in the X direction respectively, the inner ring of the Y-direction sliding table (3) is coaxial with the central through hole (10) in the same diameter, two ends of the X direction of the upper surface of the X-direction sliding table (2) are fixedly connected with a third guide rail (19) and a fourth guide rail (20) which are matched with the third sliding block (17) and the fourth sliding block (18) respectively, the axial directions of the third guide rail (19) and the fourth guide rail (20) are parallel to the Y direction, the Y-direction motor (5) comprises a Y-direction motor (5) rotating shaft which is parallel to the Y direction, the Y-direction motor (5) rotating shaft extends out of the Y-direction motor (5) to form a Y-direction motor rotating shaft extension portion (21), and an external thread which is matched with the Y-direction nut (7) is arranged on the Y-direction motor rotating shaft extension portion (21), a Y-direction nut (7) is screwed on the Y-direction motor rotating shaft extension part (21), a Y-direction through hole for inserting the Y-direction motor rotating shaft extension part (21) is formed in a Y-direction motor sliding block (9), the Y-direction motor rotating shaft extension part (21) is inserted into the Y-direction through hole, and the Y-direction motor sliding block (9) is fixedly connected with the Y-direction nut (7);

the lens quick-release assembly comprises an annular lens flange elastic sheet (22), an annular lens flange (23), an annular lens flange pressing ring plate (24) and a plurality of fastening screws (25), wherein the lens flange (23) comprises an annular plate (231), the inner circumferential surface of the annular plate (231) extends along the axial direction to form a step-shaped cylinder body (232), the outer circumferential surface of the annular plate (231) of the lens flange (23) is convexly provided with a plurality of flange chucks (233), the upper circumferential surface of the lens flange elastic sheet (22) is provided with a plurality of elastic sheet chucks and a plurality of elastic sheet openings (221) for placing the elastic sheet chucks, the elastic sheet chucks are folding sheets formed by long sheets (222) and short sheets (223), the long sheets (222) and the annular surface of the lens flange elastic sheet (22) are arranged in an obtuse angle, the short sheets (223) face the direction of the elastic sheet openings (221) and are perpendicular to the annular surface of the lens flange elastic sheet (22), the length of the short sheets (223) is equal to the thickness of the flange chucks (233), a plurality of avoidance openings (26) matched with short pieces (223) of the elastic piece clamping head are formed in the ring surface of the Y-direction sliding table (3), the inner diameter of the lens flange pressing ring plate (24) is matched with the outer diameter of the ring plate (231) of the lens flange (23), a plurality of clamping head inlets (241) matched with the flange clamping heads (233) are formed in the ring surface of the lens flange pressing ring plate (24), clamping grooves (242) matched with the elastic piece clamping head of the lens flange elastic piece (22) are formed in the lower ring surface of the lens flange pressing ring plate (24) along the thickness direction of the lens flange pressing ring plate (24), the groove depth of each clamping groove (242) is equal to the length of each short piece (223), the clamping head inlets (241) are arranged adjacent to and communicated with the clamping grooves (242), the clamping head inlets (241) are located on one side, far away from the short pieces (223), of the lens flange (22), The lens flange snap ring comprises a lens flange snap ring plate (24), wherein the ring surface of the lens flange snap ring plate (24) is respectively provided with a plurality of spring plate through holes (224) matched with fastening threaded holes (16) of a Y-direction sliding table (3) and a plurality of pressing ring through holes (243), the lens flange snap ring (22) and the lens flange snap ring plate (24) are positioned on the Y-direction sliding table (3) and are sequentially placed along the axial direction, fastening screws (25) sequentially penetrate through the pressing ring through holes (243), the spring plate through holes (224) and the first threaded holes to fixedly connect the lens flange snap ring plate (24), the lens flange snap ring (22) and the Y-direction sliding table (3), after the lens flange (23) is installed, a spring plate clamping head is pressed down to a yielding opening (26), a flange clamping head (233) is fixed in a clamping groove (242), so that a ring plate (231) of the lens flange (23) is fixed between the lens flange snap ring plate (24) and the lens flange snap ring (22), and a barrel body of the barrel body (232) is sequentially movably sleeved in the spring plate through holes (22) of the lens flange snap ring (232) 224) In the central through hole (10) of the inner sliding table (3) and the Y-direction sliding table (3), before the lens flange (23) is installed, the elastic sheet clamping head is in an original state and is arranged in the clamping groove (242).

2. An engineering projector lens structure according to claim 1, characterized in that the fastening threaded holes (16) are six and evenly distributed around the ring surface of the Y-direction sliding table (3).

3. The lens structure of the engineering projector according to claim 2, wherein the first guide rail (13) comprises a first guide shaft (131) and two first fixing seats (132) respectively located at two ends of the first guide shaft (131) and used for supporting and fixing the first guide shaft (131), the first slider (11) is a square body, a first hole (111) for inserting the first guide shaft (131) is formed in the first slider (11), and the first guide shaft (131) is inserted into the first hole (111) of the first slider (11), so that the first slider (11) and the first guide shaft (131) form a guide rail pair; the second guide rail (14) comprises a second guide shaft (141) and two second fixed seats (142) which are respectively arranged at two ends of the second guide shaft (141) and used for supporting and fixing the second guide shaft (141), the second sliding block (12) is a square body, a second hole (121) used for penetrating the second guide shaft (141) is formed in the second sliding block (12), and the second guide shaft (141) is inserted into the second hole (121) of the second sliding block (12), so that the second sliding block (12) and the second guide shaft (141) form a guide rail pair.

4. An engineering projector lens structure according to claim 3, wherein the third guide rail (19) comprises a third guide shaft (191) and two third fixing seats (192) respectively located at two ends of the third guide shaft (191) and used for supporting and fixing the third guide shaft (191), the third slider (17) is a square body, a third hole (171) used for inserting the third guide shaft (191) is formed in the third slider (17), and the third guide shaft (191) is inserted into the third hole (171) of the third slider (17), so that the third slider (17) and the third guide shaft (191) form a guide rail pair; the fourth guide rail (20) comprises a fourth guide shaft (201) and two fourth fixing seats (202) which are respectively located at two ends of the fourth guide shaft (201) and used for supporting and fixing the fourth guide shaft (201), the fourth sliding block (18) is a square body, a fourth hole (181) used for penetrating the fourth guide shaft (201) is formed in the fourth sliding block (18), the fourth guide shaft (201) is inserted into the fourth sliding block (18), and therefore the fourth sliding block (18) and the fourth guide shaft (201) form a guide rail pair.

5. The lens structure of an engineering projector according to claim 4, wherein the first fixing seat (132) is a square body and is provided with a first threaded hole thereon, the upper and lower portions of the two ends of the first guide shaft (131) are provided with notches, the portions of the two ends of the first guide shaft (131) except for the notches are provided with first through holes, and a first screw passes through the first through hole and the first threaded hole, so as to fix the first guide shaft (131) and the first fixing seat (132); second fixing base (142) is a square body, the upper surface of second fixing base (142) is equipped with the recess that is used for fixing a position second guide shaft (141), the recess bottom is equipped with the second screw hole, the upper and lower part at the both ends of second guide shaft (141) all is equipped with the breach, the part except that the breach at the both ends of second guide shaft (141) all is equipped with the second through-hole, the second screw passes second through-hole, behind the second screw hole, thereby it is fixed with second guide shaft (141) and second fixing base (142).

6. The lens structure of an engineering projector as claimed in claim 5, wherein the diameter of the first through hole is larger than the outer diameter of the first screw.

7. The lens structure of an engineering projector as claimed in claim 6, wherein the third fixing seat (192) is a square body and is provided with a third threaded hole thereon, the upper and lower portions of the two ends of the third guide shaft (191) are provided with notches, the portions of the two ends of the third guide shaft (191) except for the notches are provided with third through holes, and a third screw passes through the third through holes and the third threaded hole, so as to fix the third guide shaft (191) and the third fixing seat (192); fourth fixing base (202) is a square body, the upper surface of fourth fixing base (202) is equipped with the recess that is used for fixing a position fourth guide shaft (201), the recess bottom is equipped with the fourth screw hole, the upper and lower part at the both ends of fourth guide shaft (201) all is equipped with the breach, the part except that the breach at the both ends of fourth guide shaft (201) all is equipped with the fourth through-hole, the fourth screw passes the fourth through-hole, behind the fourth screw hole, thereby it is fixed with fourth guide shaft (201) and fourth fixing base (202).

8. The lens structure of an engineering projector as claimed in claim 7, wherein the diameter of the third through hole is larger than the outer diameter of the third screw.

9. An engineering projector lens structure according to claim 8, wherein the four corners of the lens holder base (1) are provided with rear focus through holes and rear focus threaded holes, the rear focus through holes are provided with rear focus reducing adjusting screws, the rear focus threaded holes are provided with rear focus increasing adjusting screws, and the length of the rear focus reducing adjusting screws is greater than that of the rear focus increasing adjusting screws.

10. An engineering projector lens structure according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, wherein the lens displacement adjusting assembly further comprises an X-direction motor fixing plate (27) and a Y-direction motor fixing plate (28), the X-direction motor fixing plate (27) is a vertical folded plate formed by a first long plate and a first short plate, the first long plate is fixedly connected with the end face of the X-direction motor (4), and the first short plate is fixedly connected with the lens frame base (1), so that the fixed connection between the X-direction motor (4) and the lens frame base (1) is realized; the Y-direction motor fixing plate (28) is a vertical folded plate formed by a second long plate and a second short plate, the second long plate is fixedly connected with the end face of the Y-direction motor (5), and the second short plate is fixedly connected with the X-direction sliding table (2), so that the Y-direction motor (5) is fixedly connected with the X-direction sliding table (2).