CN113448149B - Telescopic structure of projector lens - Google Patents
Telescopic structure of projector lens Download PDFInfo
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- CN113448149B CN113448149B CN202110869144.0A CN202110869144A CN113448149B CN 113448149 B CN113448149 B CN 113448149B CN 202110869144 A CN202110869144 A CN 202110869144A CN 113448149 B CN113448149 B CN 113448149B
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- spring
- sleeve
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- 238000007789 sealing Methods 0.000 claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000007373 indentation Methods 0.000 abstract description 2
- 239000000314 lubricant Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002337 anti-port Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003974 emollient agent Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
- B08B17/04—Preventing deposition of fouling or of dust by using removable coverings
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/145—Housing details, e.g. position adjustments thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lens Barrels (AREA)
Abstract
The invention discloses a telescopic structure of a projector lens, which comprises a projector main body, a sleeve, a lens and a telescopic mechanism, wherein the side surface of the projector main body is fixedly connected with the sleeve, the inside of the sleeve is movably connected with the telescopic mechanism which realizes telescopic movement through sliding on a spiral surface, the telescopic mechanism is in transmission connection with an adjusting mechanism which is in spacing type limiting, and the cylindrical side surface of the sleeve is in transmission connection with an input end of a sealing mechanism in intermittent transmission. When needs adjust the camera lens, telescopic machanism is flexible through sliding drive lens on the helicoid, and adjustment mechanism carries out position control through spacing the lens in the interval on the helicoid simultaneously, makes flexible regulation convenient, and telescopic machanism drives and seals the mechanism and open in the linkage when the camera lens stretches out, drives in the camera lens indentation device and seals the mechanism and close the sheathed tube one end is automatic, seals the camera lens, prevents dust and prevents liquid, effectively increases the life of camera lens.
Description
Technical Field
The invention relates to the technical field of projection equipment, in particular to a telescopic structure of a projector lens.
Background
At present, projectors are widely used in a plurality of occasions such as working and living of people, and the telescopic structures of most projector lenses in the market control the telescopic of the projector lenses by adjusting gears on a projector shell.
Chinese patent publication No.: CN211506146U discloses a projecting apparatus camera lens telescoping device, including shell and camera lens, the side of shell is provided with the adapter sleeve, and the interlude has the interlude cover in the adapter sleeve, the inside left and right sides symmetry fixed connection piece of adapter sleeve, rotates between the connecting block and is provided with the pivot, and the trailing flank opening of interlude cover has seted up spacing spout along its length direction to the side about the interlude cover, and the inside up end symmetry of interlude cover is fixed and is provided with the rack, the rigidity that corresponds the rack on the pivot is provided with the gear with rack toothing, and the camera lens is inlayed in the front of interlude cover.
The following problems may be encountered in the use of the existing projector:
when not using, the projecting apparatus camera lens of current lacks automatic protective structure when retracting, leads to the camera lens often to need artificially to carry out the closing cap protection with the camera lens alone or directly expose the camera lens, lacks the protection design, forgets easily, has reduced the life of camera lens.
Therefore, it is necessary to provide a telescopic structure of a projector lens to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a telescopic structure of a projector lens, which aims to solve the problems that when the existing projector is not used, an automatic protection structure is lacked when the projector lens retracts, so that the lens is often required to be covered and protected by a single person or directly exposed, a foolproof design is lacked, the lens is easy to forget, and the service life of the lens is shortened.
In order to achieve the purpose, the invention provides the following technical scheme: a telescopic structure of a projector lens comprises a projector main body, a sleeve and a lens, wherein a knob is rotatably connected to the side surface of the projector main body, one end of the knob extends out of the outer side surface of the projector main body, a rotating column is connected to the other end of the knob in a transmission manner, a through hole is formed in the end surface of the rotating column in a through manner along the central axis direction of the rotating column, a pushing block is fixedly connected to the outer side surface of the rotating column, a spiral surface is arranged on the pushing block, a telescopic mechanism which can realize movement through sliding on the spiral surface is movably matched on the pushing block, a limiting block is fixedly connected to the side surface, close to the rotating column, of the projector main body, a moving pipe is connected in the limiting block in a sliding manner, the moving pipe is fixedly connected with the telescopic mechanism, the lens is fixedly connected to the moving pipe, an adjusting mechanism for limiting the lens is connected to the telescopic mechanism in a transmission manner, the sleeve fixedly connected with the projector main body is arranged on the outer side of the moving pipe, the outer side surface of the movable tube is in transmission connection with a sealing mechanism for sealing the lens, and the sealing mechanism comprises a first gear, a transmission rod and a driving plate; fixedly connected with drive plate on the sheathed tube side, be provided with the skewed tooth on the drive plate, the skewed tooth is interval distribution, and the meshing is connected with the gear number one on the skewed tooth, fixedly connected with transfer line on the gear number one, and drive plate was kept away from to the transfer line serve fixedly connected with and the closing cap of camera lens looks adaptation.
When the lens adjusting device works, when the lens needs to be adjusted to stretch, the knob is rotated to drive the rotating column and the pushing block to rotate, the pushing block rotates to drive the telescopic mechanism to move, the telescopic mechanism drives the moving pipe and the lens to move when moving, the moving pipe slides in the limiting block, the lens is driven to stretch and retract by sliding on the spiral surface of the pushing block, meanwhile, the adjusting mechanism adjusts the position of the lens by limiting on the spiral surface, the telescopic adjustment is convenient, the lens is limited when stretching to a proper position, the telescopic mechanism drives the sealing mechanism to do intermittent motion, the lens is opened in a linkage mode when extending out, when the moving pipe moves outwards, the helical teeth arranged on one end of the driving plate drive the first gear to rotate, the first gear drives the sealing cover to rotate, the sealing cover rotates around the axis of the transmission rod on one end of the sleeve, when the sealing cover rotates to the set position, the driving plate does not have a tooth section to contact with the first gear, the closing cap no longer rotates, and sheathed tube one end is opened completely, and telescopic machanism can drive the camera lens and outwards stretch out, and when the camera lens withdrawal, the camera lens is after retracting in the sleeve pipe completely, and a gear and skewed tooth meshing contact, skewed tooth on the drive plate drive a gear reversal, and closing cap antiport returns the position, covers sheathed tube one end completely, prevents that dust and liquid material from getting into, protects the camera lens when not using.
As a further aspect of the present invention, the telescopic mechanism includes a cylinder head; fixedly connected with second number bevel gear on the knob, second number bevel gear transmission is connected with bevel gear No. one, and bevel gear fixed connection is on the lateral surface of rotating the post, promotes the piece symmetry and is provided with two and promotes and be provided with the clearance between the piece, promotes swing joint and has the cylinder head on the piece, and the cylinder head diameter is less than two and promotes the clearance between the piece.
When the lens is required to be adjusted, the knob is rotated by a certain angle, the knob drives the rotating column to rotate, the cylinder head moves on the pushing block, the pushing block pushes the cylinder head to move from inside to outside, the cylinder head and the moving pipe are fixedly connected, the cylinder head drives the moving pipe to move, the lens fixedly connected to the moving pipe is moved to stretch out along with the moving pipe, when the cylinder head moves over the limit position of the pushing block, the cylinder head is separated from the pushing block, the lens is automatically retracted into the sleeve, the limiting block limits the moving pipe to enable the lens to retract to the set position, the cylinder head falls into one end position of the pushing block through two gaps between the pushing blocks to reset, a user can adjust the lens again, the problem that the adjusting teeth cannot be used due to overexertion when the user adjusts the lens is avoided, the structure is reliable, the structure is simple and practical, and the cost is low.
As a further scheme of the invention, the adjusting mechanism comprises a clamping groove and a second spring; the cylinder is overhead to have seted up No. two spring grooves, and No. two spring grooves are the shoulder hole, and No. two spring of No. two spring inslot fixedly connected with adjust first fixed connection No. two spring one end, adjust the head and slide in No. two spring grooves, and the one end cooperation of adjusting the head is connected with the draw-in groove, and the draw-in groove is provided with and adjusts the head and keep away from the one end matched with inclined plane of cylinder head on promoting the piece interval evenly distributed, is provided with emollient in the draw-in groove, and the overhead one of being close to the draw-in groove of adjusting is served and is provided with the chamfer.
When the camera lens is adjusted to a proper position, the adjusting head is clamped in the clamping groove, when the adjustment is continued, after certain external force is applied, the adjusting head is separated from the clamping groove, so that the camera lens can continue to move on the pushing block, the structure is reliable, and the use is convenient.
As a further scheme of the invention, a guide surface is arranged at one end of the pushing block, which is far away from the lens, and one end of the rotating column, which is close to the guide surface, slides in the limiting block.
When the cylinder head resets from the one end position that two gaps between the promotion pieces fall into the promotion piece, the setting of the guide surface can guide the adjusting head when entering into the promotion piece, so that the adjusting head can return to the promotion piece more easily.
As a further scheme of the invention, a sealing gasket is fixedly arranged on the sealing cover, the sealing gasket is annular, convex circles are uniformly distributed on the surface of the sealing gasket, and a groove matched with the convex circles is arranged on the side surface of one end, close to the sealing gasket, of the sleeve.
When the sleeve is sealed in a specific working process, the sealing cover drives the sealing gasket to rotate to one end of the sleeve, and the convex circle and the groove of the rubber material are matched, so that the sealing performance is effectively improved.
As a further scheme of the invention, convex ribs are uniformly arranged on the cylindrical side surface of the knob.
During specific work, the arrangement of the convex ribs on the knob enables a user to operate and rotate the knob more labor-saving, the lubricant reduces the transmission resistance between the first bevel gear and the second bevel gear, and good experience feeling of use is increased.
As a further scheme of the invention, a first spring groove is arranged on the outer side surface of the movable pipe, the first spring groove is an annular groove, a first spring is fixedly connected in the first spring groove, and one end of the first spring is fixedly connected to the sleeve.
When the pushing block pushes the moving pipe to drive the lens to extend outwards, the spring is stretched, when the cylindrical head moves over the limit position of the pushing block, the cylindrical head is separated from the pushing block, and the spring pushes the moving pipe to move inwards to reset, so that the lens is convenient to use.
The working principle is as follows: when the lens needs to be adjusted, the knob is rotated by a certain angle, the knob drives the rotating column to rotate, the cylindrical head moves on the pushing block, the pushing block pushes the cylindrical head to move from inside to outside, the cylindrical head and the moving pipe are fixedly connected, the cylindrical head drives the moving pipe to move, the lens fixedly connected to the moving pipe stretches out along with the movement, when the cylindrical head moves over the limit position of the pushing block, the cylindrical head is separated from the pushing block, the first spring pushes the moving pipe to move inwards, the lens retracts into the sleeve automatically, the limiting block limits the moving pipe to enable the lens to retract to the set position, the cylindrical head falls into one end position of the pushing block through the gap between the two pushing blocks to reset, a user can adjust again, when the cylindrical head moves on the pushing block, one end of the adjusting head enters the clamping groove under the elastic force of the second spring, the inclined plane arranged on the clamping groove enables the adjusting head to slide out of the clamping groove smoothly, and enables the moving pipe to have the limit position when the telescopic adjustment is carried out The function, when the lens is adjusted to the suitable position, adjust the head card in the draw-in groove, when needing to continue adjusting, after exerting certain external force, adjust the head and deviate from the draw-in groove and make the cylinder head continue moving on pushing the piece, make the lens carry on the flexible regulation conveniently, when moving the outside movement of tube, the skewed tooth that sets up on one end of the drive plate drives a number of gears to rotate, a number of gears drive the closing cap to rotate, the closing cap rotates round the axis of the drive link on one end of the quill, when the closing cap rotates to the set position, there is no tooth section and a number of gears contact on the drive plate, the closing cap no longer rotates, one end of the quill is totally opened, the telescopic machanism can drive the lens to stretch out outwardly, when the lens retracts, the skewed tooth drives a number of gears to reverse, the closing cap reverse rotation returns the position, cover one end of the quill totally, prevent dust and liquid substance from entering, the lens is protected when not in use.
According to the telescopic structure of the projector lens, when the lens needs to be adjusted, the telescopic mechanism drives the lens to stretch out and draw back through sliding on the spiral surface, when the adjustment is excessive, the cylindrical head falls into one end position of the pushing block through the gap between the two pushing blocks to reset, a user can readjust the telescopic structure, the problem that the adjusting teeth cannot be used due to overexertion during adjustment of the user is avoided, and the telescopic structure is reliable in structure, simple, practical and low in cost. Simultaneously adjustment mechanism carries out position control through spacing to the lens on the helicoid, makes flexible regulation convenient, and telescopic machanism drives and seals the mechanism and open in the linkage of camera lens when stretching out, drives in the camera lens indentation device and seals the mechanism and automatically carry out the closure, seals the lens, prevents the pollution of camera lens, effectively increases the life of camera lens.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a schematic view of the overall side view cross-section of the projector body of the present invention with the projector body removed;
FIG. 3 is a schematic cross-sectional three-dimensional structure of the telescoping mechanism of the present invention;
FIG. 4 is a schematic view of the cross-sectional three-dimensional structure of the adjustment mechanism of the present invention;
FIG. 5 is an enlarged schematic view of FIG. 4 at A;
FIG. 6 is a schematic three-dimensional structure of a rotary column and a pushing block of the present invention;
FIG. 7 is a schematic top view of the rotary post and the pusher block;
fig. 8 is a schematic view of the overall structure of the projector main body of the present invention removed;
FIG. 9 is a schematic view of the overall construction of the removal sleeve of the present invention;
FIG. 10 is an enlarged view of the structure at B in FIG. 9;
fig. 11 is a schematic view of the knob drive of the present invention.
Number designation in the figures: 1. a projector main body; 2. a knob; 3. a telescoping mechanism; 301. a sleeve; 302. moving the tube; 303. a limiting block; 304. a first spring; 305. a first spring groove; 306. rotating the column; 307. a pushing block; 308. a cylindrical head; 4. a sealing mechanism; 401. sealing the cover; 402. a first gear; 403. a transmission rod; 404. a drive plate; 406. helical teeth; 407. a tooth socket; 5. an adjustment mechanism; 502. an adjustment head; 503. a second spring; 504. a second spring groove; 505. a card slot; 506. a bevel; 507. a guide surface; 6. a lens; 7. a first bevel gear; 8. a second bevel gear; 9. and a gasket.
Detailed Description
As shown in fig. 1, 2, 3 and 8, a telescopic structure of a projector lens comprises a projector main body 1, a sleeve 301 and a lens 6, wherein a knob 2 is rotatably connected to a side surface of the projector main body 1, one end of the knob 2 extends out of a lateral surface of the projector main body 1, the other end of the knob 2 is in transmission connection with a rotating column 306, a through hole is formed in an end surface of the rotating column 306 along a central axis direction thereof, a pushing block 307 is fixedly connected to the lateral surface of the rotating column 306, a spiral surface is arranged on the pushing block 307, a telescopic mechanism 3 which can move by sliding on the spiral surface is movably matched on the pushing block 307, a limit block 303 is fixedly connected to a side surface of the projector main body 1 close to the rotating column 306, a moving tube 302 is slidably connected to the limit block 303, the moving tube 302 is fixedly connected to the telescopic mechanism 3, the lens 6 is fixedly connected to the moving tube 302, an adjusting mechanism 5 which limits the lens 6 is in transmission connection to the telescopic mechanism 3, a sleeve 301 fixedly connected with the projector main body 1 is arranged on the outer side of the movable tube 302, a sealing mechanism 4 for covering the lens 6 is connected to the outer side of the movable tube 302 in a transmission manner, and the sealing mechanism 4 comprises a first gear 402, a transmission rod 403 and a driving plate 404; a driving plate 404 is fixedly connected to the side surface of the sleeve 301, helical teeth 406 are arranged on the driving plate 404, the helical teeth 406 are distributed at intervals, a first gear 402 is meshed and connected to the helical teeth 406, a transmission rod 403 is fixedly connected to the first gear 402, and a sealing cover 401 matched with the lens 6 is fixedly connected to one end, away from the driving plate 404, of the transmission rod 403.
When the lens 6 needs to be adjusted to stretch and retract, the knob 2 is rotated, the knob 2 drives the rotating column 306 and the pushing block 307 to rotate, the pushing block 307 rotates to drive the telescoping mechanism 3 to move, the telescoping mechanism 3 drives the moving tube 302 and the lens 6 to move when moving, the moving tube 302 slides in the limiting block 303, the lens 6 is driven to stretch and retract by sliding on the spiral surface of the pushing block 307, meanwhile, the adjusting mechanism 5 adjusts the position of the lens 6 by limiting on the spiral surface, so that the telescoping adjustment is convenient, the lens 6 is stretched to a proper position, namely, limited, the telescoping mechanism 3 drives the sealing mechanism 4 to open in a linkage manner when the lens 6 extends out, the sealing mechanism 4 is driven to close automatically by the retracting device of the lens 6, when the moving tube 302 moves outwards, the oblique teeth 406 arranged on one end of the driving plate 404 drives the first gear 402 to rotate, the first gear 402 drives the sealing cover 401 to rotate, the cover 401 rotates around the axis of the transmission rod 403 at one end of the sleeve 301, when the cover 401 rotates to a set position, the toothless section on the driving plate 404 contacts with the first gear 402, the cover 401 does not rotate any more, one end of the sleeve 301 is completely opened, the telescopic mechanism 3 can drive the lens 6 to extend outwards, when the lens 6 retracts, after the lens 6 retracts into the sleeve 301 completely, the first gear 402 is meshed with the helical teeth 406 and contacts with the helical teeth 406, the helical teeth 406 on the driving plate 404 drives the first gear 402 to rotate reversely, the cover 401 rotates reversely to a return position, one end of the sleeve 301 is completely covered, dust and liquid substances are prevented from entering, and the lens 6 is protected when not in use.
As shown in fig. 1, 5, 7 and 11, the telescopic mechanism 3 comprises a cylindrical head 308; the knob 2 is fixedly connected with a second bevel gear 8, the second bevel gear 8 is in transmission connection with a first bevel gear 7, the first bevel gear 7 is fixedly connected to the outer side surface of the rotating column 306, the two pushing blocks 307 are symmetrically provided with two gaps between the two pushing blocks 307, the pushing blocks 307 are movably connected with a cylindrical head 308, and the diameter of the cylindrical head 308 is smaller than the two gaps between the two pushing blocks 307.
When the lens 6 needs to be adjusted, the knob 2 is rotated by a certain angle, the knob 2 drives the rotating column 306 to rotate, the cylindrical head 308 moves on the pushing block 307, the pushing block 307 pushes the cylindrical head 308 to move from inside to outside, the cylindrical head 308 is fixedly connected with the moving tube 302, the cylindrical head 308 drives the moving tube 302 to move, the lens 6 fixedly connected with the moving tube 302 extends outwards along with the movement, when the cylindrical head 308 moves over the limit position of the pushing block 307, the cylindrical head 308 is separated from the pushing block 307, the lens 6 is automatically retracted into the sleeve 301, the moving tube 302 is limited by the limiting block 303 so that the lens 6 is retracted to the set position, the cylindrical head 308 falls into one end position of the pushing block 307 through the gap between the two pushing blocks 307 to reset, the user can adjust again, and the problem that the adjusting teeth cannot be used due to overexertion during adjustment by the user is avoided, the structure is reliable, simple and practical, and the cost is lower.
As shown in fig. 5, 6 and 7, the adjusting mechanism 5 includes a card slot 505 and a second spring 503; a second spring groove 504 is formed in the cylindrical head 308, the second spring groove 504 is a stepped hole, a second spring 503 is fixedly connected in the second spring groove 504, the adjusting head 502 is fixedly connected to one end of the second spring 503, the adjusting head 502 slides in the second spring groove 504, one end of the adjusting head 502 is connected with a clamping groove 505 in a matched mode, the clamping grooves 505 are evenly distributed on the pushing block 307 at intervals, an inclined surface 506 matched with one end, far away from the cylindrical head 308, of the adjusting head 502 is arranged on the clamping groove 505, a lubricant is arranged in the clamping groove 505, and a chamfer is arranged at one end, close to the clamping groove 505, of the adjusting head 502.
When the telescopic adjusting device works specifically, when the cylindrical head 308 moves on the pushing block 307, one end of the adjusting head 502 enters the clamping groove 505 under the elastic action of the second spring 503, the inclined surface 506 arranged on the clamping groove 505 enables the adjusting head 502 to slide out of the clamping groove 505 smoothly, so that the moving pipe 302 has a limiting function during telescopic adjustment, when the lens 6 is adjusted to a proper position, the adjusting head 502 is clamped in the clamping groove 505, when the adjustment needs to be continued, after a certain external force is applied, the adjusting head 502 is separated from the clamping groove 505, so that the cylindrical head 308 can continue to move on the pushing block 307, and the lens 6 can be adjusted in a telescopic mode conveniently, and the telescopic adjusting device is reliable in structure and convenient to use.
As shown in fig. 7 and 8, a guide surface 507 is provided on an end of the pushing block 307 remote from the lens 6, and an end of the rotating column 306 close to the guide surface 507 slides in the stopper 303.
In specific operation, when the cylinder head 308 falls into one end position of the pushing block 307 from the gap between the two pushing blocks 307 to reset, the guiding surface 507 can guide the adjusting head 502 to enter the pushing block 307, so that the adjusting head 502 can return to the pushing block 307 more easily.
As shown in fig. 9 and 11, a sealing gasket 9 is fixedly arranged on the sealing cover 401, the sealing gasket 9 is annular, convex circles are uniformly distributed on the surface of the sealing gasket 9, and a groove matched with the convex circles is arranged on the side surface of one end of the sleeve 301 close to the sealing gasket 9.
During specific work, when the sleeve 301 is sealed, the sealing cover 401 drives the sealing gasket 9 to rotate to one end of the sleeve 301, and the convex circle and the groove of the rubber material are matched, so that the sealing performance is effectively improved.
As shown in fig. 11, the cylindrical side surface of the knob 2 is uniformly provided with convex ribs.
During specific work, the arrangement of the convex ribs on the knob 2 enables a user to operate and rotate the knob 2 more easily, the lubricant reduces the transmission resistance between the first bevel gear 7 and the second bevel gear 8, and good experience of use is improved.
As shown in fig. 2 and 9, a first spring groove 305 is formed on the outer side surface of the moving pipe 302, the first spring groove 305 is an annular groove, a first spring 304 is fixedly connected in the first spring groove 305, and one end of the first spring 304 is fixedly connected to the sleeve 301.
When the special working is performed, when the pushing block 307 pushes the moving tube 302 to drive the lens 6 to extend outwards, the first spring 304 is stretched, when the cylindrical head 308 moves past the limit position of the pushing block 307, the cylindrical head 308 is separated from the pushing block 307, and the first spring 304 pushes the moving tube 302 to move inwards to reset, so that the special working tool is convenient to use.
The working principle is as follows: when the lens 6 needs to be adjusted, the knob 2 is rotated by a certain angle, the knob 2 drives the rotating column 306 to rotate, the cylindrical head 308 moves on the pushing block 307, the pushing block 307 pushes the cylindrical head 308 to move from inside to outside, the cylindrical head 308 and the moving tube 302 are fixedly connected, the cylindrical head 308 drives the moving tube 302 to move, the lens 6 fixedly connected to the moving tube 302 extends out along with the movement, when the cylindrical head 308 moves over the limit position of the pushing block 307, the cylindrical head 308 is separated from the pushing block 307, the first spring 304 pushes the moving tube 302 to move inwards, the lens 6 is automatically retracted into the sleeve 301, the moving tube 302 is limited by the limiting block 303 so that the lens 6 retracts to the set position, the cylindrical head 308 falls onto one end position of the pushing block 307 through the gap between the two pushing blocks 307 to reset, the user can readjust the lens, when the cylindrical head 308 moves on the pushing block 307, one end of the adjusting head 502 enters the clamping groove 505 under the elastic force of the second spring 503, the inclined surface 506 arranged on the clamping groove 505 enables the adjusting head 502 to smoothly slide out of the clamping groove 505 to enable the movable tube 302 to have a limiting function during telescopic adjustment, when the lens 6 is adjusted to a proper position, the adjusting head 502 is clamped in the clamping groove 505, when the adjustment needs to be continued, after a certain external force is applied, the adjusting head 502 is separated from the clamping groove 505 to enable the cylindrical head 308 to continuously move on the pushing block 307, so that the lens 6 can conveniently perform telescopic adjustment, when the movable tube 302 moves outwards, the inclined teeth 406 arranged on one end of the driving plate 404 drives the first gear 402 to rotate, the first gear 402 drives the sealing cover 401 to rotate, the sealing cover 401 rotates around the axis of the driving rod 403 on one end of the sleeve 301, when the sealing cover 401 rotates to the set position, the non-tooth section on the driving plate 404 is contacted with the first gear 402, the sealing cover 401 is not rotated any more, one end of the sleeve 301 is opened completely, the telescopic mechanism 3 can drive the lens 6 to extend outwards, when the lens 6 retracts, after the lens 6 retracts into the sleeve 301 completely, the first gear 402 is in meshing contact with the helical teeth 406, the helical teeth 406 on the driving plate 404 drive the first gear 402 to rotate reversely, the sealing cover 401 rotates reversely to return to a position, one end of the sleeve 301 is covered completely, dust and liquid substances are prevented from entering, and the lens 6 is protected when the camera is not used.
Claims (7)
1. The utility model provides a telescopic structure of projecting apparatus camera lens, includes projecting apparatus main part, sleeve pipe and camera lens, its characterized in that: the side surface of the projector main body is rotatably connected with a knob, one end of the knob extends out of the outer side surface of the projector main body, the other end of the knob is in transmission connection with a rotating column, the end surface of the rotating column is provided with a through hole along the direction of the central axis thereof, the outer side surface of the rotating column is fixedly connected with a pushing block, the pushing block is provided with a spiral surface, a telescopic mechanism which can realize movement by sliding on the spiral surface is movably matched on the pushing block, the side surface of the projector main body, which is close to the rotating column, is fixedly connected with a limiting block, a moving pipe is connected in the limiting block in a sliding way, the moving pipe is fixedly connected with the telescopic mechanism, a lens is fixedly connected on the moving pipe, the telescopic mechanism is in transmission connection with an adjusting mechanism which limits the lens, a sleeve is arranged on the outer side of the moving pipe and is fixedly connected with the projector main body, the outer side surface of the moving pipe is in transmission connection with a sealing mechanism which covers the lens, the sealing mechanism comprises a first gear, a transmission rod and a driving plate; fixedly connected with drive plate on the sheathed tube side, be provided with the skewed tooth on the drive plate, the skewed tooth is interval distribution, and the meshing is connected with the gear number one on the skewed tooth, fixedly connected with transfer line on the gear number one, and drive plate was kept away from to the transfer line serve fixedly connected with and the closing cap of camera lens looks adaptation.
2. A telescopic structure of a projector lens according to claim 1, characterized in that: the telescopic mechanism comprises a cylindrical head; fixedly connected with second number bevel gear on the knob, second number bevel gear transmission is connected with bevel gear No. one, and bevel gear fixed connection is on the lateral surface of rotation post, promotes the piece symmetry and is provided with two and two rotations and promotes and be provided with the clearance between the piece, promotes swing joint and has the cylinder head on the piece, and cylinder head diameter is less than two and promotes the clearance between the piece.
3. A telescopic structure of a projector lens according to claim 2, characterized in that: the adjusting mechanism comprises a clamping groove and a second spring; the cylinder is overhead to have seted up No. two spring grooves, and No. two spring grooves are the shoulder hole, and No. two spring inslot fixed connection No. two springs, adjust first fixed connection No. two spring one end, adjust the head and slide in No. two spring grooves, the one end cooperation of adjusting the head is connected with the draw-in groove, and the draw-in groove is at interval evenly distributed on promoting the piece, is provided with and adjusts the head on the draw-in groove and keeps away from the one end matched with inclined plane of cylinder head, and the overhead one of being close to the draw-in groove of adjusting is served and is provided with the chamfer.
4. A telescopic structure of a projector lens according to claim 1, characterized in that: the end of the pushing block far away from the lens is provided with a guide surface, and the end of the rotating column close to the guide surface slides in the limiting block.
5. The telescopic structure of a projector lens according to claim 4, wherein: the sealing cover is fixedly provided with a sealing gasket, the sealing gasket is annular, convex circles are uniformly distributed on the surface of the sealing gasket, and a groove matched with the convex circles is formed in the side face of one end, close to the sealing gasket, of the sleeve.
6. A telescopic structure of a projector lens according to claim 2, characterized in that: and convex ribs are uniformly arranged on the outer side surface of the knob.
7. A telescopic structure of a projector lens according to claim 3, wherein: a spring groove is formed in the outer side face of the movable pipe, the spring groove is an annular groove, a first spring is fixedly connected in the spring groove, and one end of the first spring is fixedly connected to the sleeve.
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| CN202110869144.0A CN113448149B (en) | 2021-07-30 | 2021-07-30 | Telescopic structure of projector lens |
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| CN202110869144.0A CN113448149B (en) | 2021-07-30 | 2021-07-30 | Telescopic structure of projector lens |
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| JPH1164971A (en) * | 1997-08-12 | 1999-03-05 | Sanyo Electric Co Ltd | Shutter mechanism for liquid crystal projector and shutter opening/closing method |
| CN1677215A (en) * | 2004-04-02 | 2005-10-05 | 三星电子株式会社 | Automatic camera lens module retracting/extending apparatus for mobile communication terminals |
| CN210578904U (en) * | 2019-08-15 | 2020-05-19 | 广州烽睿信息科技有限公司 | Novel paperless video conference device |
| CN212112789U (en) * | 2020-07-04 | 2020-12-08 | 广西现代职业技术学院 | English teaching is with teaching projecting apparatus convenient to accomodate |
| CN112285990A (en) * | 2020-11-17 | 2021-01-29 | 上海简程网络科技有限公司 | Projector for IT online training |
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2021
- 2021-07-30 CN CN202110869144.0A patent/CN113448149B/en active Active
Patent Citations (5)
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|---|---|---|---|---|
| JPH1164971A (en) * | 1997-08-12 | 1999-03-05 | Sanyo Electric Co Ltd | Shutter mechanism for liquid crystal projector and shutter opening/closing method |
| CN1677215A (en) * | 2004-04-02 | 2005-10-05 | 三星电子株式会社 | Automatic camera lens module retracting/extending apparatus for mobile communication terminals |
| CN210578904U (en) * | 2019-08-15 | 2020-05-19 | 广州烽睿信息科技有限公司 | Novel paperless video conference device |
| CN212112789U (en) * | 2020-07-04 | 2020-12-08 | 广西现代职业技术学院 | English teaching is with teaching projecting apparatus convenient to accomodate |
| CN112285990A (en) * | 2020-11-17 | 2021-01-29 | 上海简程网络科技有限公司 | Projector for IT online training |
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