CN116243542B - Projector with automatic obstacle avoidance function - Google Patents
Projector with automatic obstacle avoidance function Download PDFInfo
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- CN116243542B CN116243542B CN202310533236.0A CN202310533236A CN116243542B CN 116243542 B CN116243542 B CN 116243542B CN 202310533236 A CN202310533236 A CN 202310533236A CN 116243542 B CN116243542 B CN 116243542B
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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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
- G03B21/142—Adjusting of projection optics
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Lens Barrels (AREA)
Abstract
The invention relates to a projector with an automatic obstacle avoidance function, which belongs to the technical field of projection, and is provided with a driving assembly, wherein the driving assembly comprises a driving shell, a driving motor, a worm wheel and a transmission screw rod, wherein the driving motor, the worm wheel and the transmission screw rod are arranged in the driving shell, the driving motor is connected with the worm wheel, the worm is in transmission fit with the worm wheel, the central axis of the transmission screw rod is mutually overlapped with the central axis of the worm wheel, one end of the transmission screw rod is connected with one end of the worm wheel, and a zoom lens group is connected with the transmission screw rod through a sliding block connecting piece.
Description
Technical Field
The invention belongs to the technical field of projection, and particularly relates to a projector with an automatic obstacle avoidance function.
Background
A projector is a device for projecting an image or video onto a curtain or a wall, and is widely used in homes, offices, schools, entertainment places, etc., and when the projector is used, the focal length of the projector is often required to be adjusted according to different projection distances, curtain sizes, etc., so as to present a clear picture.
For example, patent application publication No. CN113391512a relates to a focusing mechanism of a projector having an auto-focusing function, a lens and a projector, the focusing mechanism comprising an outer cylinder and an inner cylinder telescopically movable with respect to the outer cylinder, a projection lens being fixedly provided on the inner cylinder, a zoom lens group and an objective lens group being further provided in the inner cylinder, when the projector needs to perform focusing processing, the distance between the zoom lens group and the objective lens group being changed by rotating the inner cylinder, and the focusing function of the projector being realized.
Based on the search of the patent application publication number, the following defects are combined:
because the projection lens is fixedly arranged on the inner cylinder, when the inner cylinder rotates in a telescopic way relative to the outer cylinder, the projection lens can rotate along with the rotation of the inner cylinder, so that an optical lens arranged in the projection lens can rotate, and the rotation of some optical lenses can influence imaging.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a projector with an automatic obstacle avoidance function, which is provided with a driving assembly, the driving assembly comprises a driving shell, a driving motor, a worm wheel and a transmission screw rod, wherein the driving motor is connected with the worm rod, the worm is in transmission fit with the worm wheel, the central axis of the transmission screw rod is mutually overlapped with the central axis of the worm wheel, one end of the transmission screw rod is connected with one end of the worm wheel, a zoom lens group is connected with the transmission screw rod through a sliding block connecting piece, the device adopts a transmission device of the worm wheel and the worm, the zoom lens group is directly driven to perform linear motion, the distance between the zoom lens group and an objective lens group is changed, the focusing function of the projection assembly is realized, compared with the traditional focusing function which is realized by rotating an inner barrel, the device does not need to rotate the inner barrel when focusing, the traditional projector is solved, because a projection lens is fixedly arranged on the inner barrel, when the inner barrel is in telescopic rotation relative to the outer barrel, the projection lens can rotate along with the rotation of the inner barrel, so that an optical lens arranged in the projection lens can rotate, the projection lens can also affect imaging, and the rotation of the optical lens in the projection lens can greatly influence the imaging effect, and the imaging effect can be greatly influenced in the imaging process, especially when the optical axis is deviated or the imaging range.
The aim of the invention can be achieved by the following technical scheme:
the projector with the automatic obstacle avoidance function comprises a projection assembly, wherein the projection assembly comprises a projection shell, a light source, a zoom lens group, an objective lens group and a projection lens, the zoom lens group, the objective lens group and the light source are sequentially arranged in the projection shell from left to right, and lens central axes of the projection lens, the zoom lens group and the objective lens group are mutually overlapped;
the device comprises a projection shell, a worm wheel, a driving component and a driving component, wherein the driving component is used for driving the zoom lens group to move and comprises a driving shell, a driving motor, a worm wheel and a transmission screw rod, the driving motor, the worm wheel and the driving component are arranged in the driving shell, the driving shell is arranged at the bottom of the projection shell, the driving motor is connected with the worm, the worm is in transmission fit with the worm wheel, the central axis of the transmission screw rod is mutually overlapped with the central axis of the worm wheel, and one end of the transmission screw rod is connected with one end of the worm wheel;
the driving assembly further comprises a sliding block connecting piece, two ends of the sliding block connecting piece are respectively connected with the transmission screw rod and the zoom lens group, the projection shell is provided with a sliding groove, and the sliding block connecting piece moves along the sliding groove of the projection shell.
The invention also provides a preferable technical scheme, which comprises a camera, a detection module and a control terminal, wherein the camera is arranged at the top of the projection shell and is in communication connection with the detection module, the camera is used for shooting in multiple projection areas and transmitting shooting data to the detection module, the detection module is in communication connection with the control terminal, and the control terminal is also in communication connection with the projection assembly and the driving assembly.
As a preferred technical scheme of the invention, the projection assembly further comprises a dust-proof belt, the projection housing comprises a first housing and a second housing, the first housing is sleeved with the second housing, an interlayer cavity is formed between the first housing and the second housing, the sliding groove is communicated with the interlayer cavity, and the dust-proof belt is arranged in the interlayer cavity in a sliding manner and is connected with the sliding block connecting piece.
As a preferable technical scheme of the invention, the dustproof belt is provided with a first through groove, the side wall of the sliding block connecting piece is provided with a groove, the first through groove is provided with a convex rib matched with the groove, and the groove is attached to the convex rib.
As a preferable technical scheme of the invention, the second shell is provided with a limiting groove, the dustproof belt is provided with a limiting block matched with the limiting groove, and the limiting groove is tightly attached to the limiting block to limit the dustproof belt to move along the direction of the through groove.
As a preferable technical scheme of the invention, the dustproof belt is made of TPU.
As a preferable technical scheme of the invention, the driving shell is provided with a sliding inner cavity, the top of the driving shell is provided with a sliding groove, the sliding groove is communicated with the sliding inner cavity, two groups of dustproof belts are arranged, and the other group of dustproof belts are arranged in the sliding inner cavity in a sliding way and are connected with the sliding block connecting piece through the sliding groove.
As a preferable technical scheme of the invention, the sliding groove is consistent with the sliding groove in size, and the width and length dimensions of the sliding groove are larger than those of the first through groove.
As a preferable technical scheme of the invention, the mobile device further comprises a mobile assembly, wherein the mobile assembly comprises a mobile shell with a hollow inside, a steering rod, a mobile wheel, a driving gear and a mobile motor, the projection assembly is arranged at the top of the mobile shell, the steering rod is vertically arranged at the bottom of the mobile shell, the bottom end of the steering rod is connected with the mobile wheel, the other end of the steering rod is fixedly arranged on the driving gear in a penetrating way, the mobile motor is used for driving the driving gear to rotate, and the mobile motor is in communication connection with the control terminal.
As a preferable technical scheme of the invention, the intelligent lifting device further comprises a lifting assembly, the lifting assembly comprises a lifting motor, a lifting screw rod, a lifting table and a connecting rod, the top of the lifting table is provided with the projection assembly, the lifting motor is arranged at the top of the movable shell, the output end of the lifting motor is coaxially connected with one end of the lifting screw rod, one end of the lifting table is hinged to the movable shell, the other end of the lifting table is hinged to one end of the connecting rod, the other end of the connecting rod is connected with the screw rod through a sliding block, and the lifting motor is in communication connection with a control terminal.
The beneficial effects of the invention are as follows:
the invention provides a projector with an automatic obstacle avoidance function, which is provided with a driving assembly, wherein the driving assembly comprises a driving shell, a driving motor, a worm wheel and a transmission screw rod, wherein the driving motor, the worm wheel and the transmission screw rod are arranged in the driving assembly, the driving motor is connected with the worm wheel, the worm is in transmission fit with the worm wheel, the central axis of the transmission screw rod is mutually overlapped with the central axis of the worm wheel, one end of the transmission screw rod is connected with one end of the worm wheel, a zoom lens group is connected with the transmission screw rod through a sliding block connecting piece, the device adopts a worm wheel and worm transmission device to directly drive the zoom lens group to perform linear motion, the distance between the zoom lens group and an objective lens group is changed, the focusing function of the projection assembly is realized, compared with the traditional focusing function which is realized by rotating an inner barrel, the device does not need to rotate the inner barrel when focusing, the traditional projector is solved, the projection lens is also rotated along with the rotation of the inner barrel when the inner barrel is in telescopic rotation relative to the outer barrel, so that an optical lens arranged in the projection lens can rotate, the imaging is influenced by the rotation of the inner barrel, and the rotation of the optical lens in the projection lens can also rotate, and the imaging is influenced by the rotation of the optical lens in the process, and the error of the processing and the assembly.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is an overall view of a projector with an automatic obstacle avoidance function according to the present invention;
FIG. 2 is a diagram of a lift assembly of a projector with an automatic obstacle avoidance function according to the present invention;
FIG. 3 is an internal view of a mobile assembly of a projector with an automatic obstacle avoidance function according to the present invention;
FIG. 4 is an internal view of a driving assembly of a projector with an automatic obstacle avoidance function according to the present invention;
FIG. 5 is an internal view of a projection assembly of a projector with an automatic obstacle avoidance function according to the present invention;
FIG. 6 is a view showing a dust-proof belt structure of a projector with an automatic obstacle avoidance function according to the present invention;
description of the main symbols
In the figure: 1. a projection assembly; 101. a projection housing; 1011. a first housing; 1012. a second housing; 102. a light source; 103. a zoom lens group; 104. an objective lens group; 105. a projection lens; 106. a dust-proof belt; 1061. a first through groove; 1062. convex ribs; 1063. a limiting block; 2. a drive assembly; 201. a driving motor; 202. a worm; 203. a worm wheel; 204. a transmission screw rod; 205. a slider connection; 3. a moving assembly; 301. a movable housing; 302. a steering lever; 303. a moving wheel; 304. a drive gear; 305. a moving motor; 4. a lifting assembly; 401. lifting a motor; 402. lifting the screw rod; 403. lifting the table; 404. a connecting rod; 5. a camera is provided.
Detailed Description
In order to further describe the technical means and effects adopted by the invention for achieving the preset aim, the following detailed description is given below of the specific implementation, structure, characteristics and effects according to the invention with reference to the attached drawings and the preferred embodiment.
Referring to fig. 1-6, the present embodiment provides a projector with an automatic obstacle avoidance function, which includes a projection assembly 1, wherein the projection assembly 1 includes a projection housing 101, a light source 102, a zoom lens group 103, an objective lens group 104 and a projection lens 105, the zoom lens group 103, the objective lens group 104 and the light source 102 are sequentially arranged in the projection housing 101 from left to right, and lens central axes of the projection lens 105, the zoom lens group 103 and the objective lens group 104 are mutually overlapped. In this device, the projection lens 105 projects the internal image of the projector onto the screen, and this structure controls the transmission of light and focuses the light at a specific point so that the user can see a clear and bright image. The zoom lens group 103 is composed of a plurality of groups of lenses, the distance between the zoom lens group 103 and the objective lens group 104 is changed by moving or adjusting the positions of the lens groups, so as to realize the effect of optical zooming, and the objective lens group 104 is mainly used for focusing and amplifying a projection picture and is usually used in parallel with the zoom lens group 103 so as to maximally improve the projection quality, therefore, the projection lens 105, the zoom lens and the objective lens are all provided with optical lenses, and in the device, the lens central axes of the projection lens 105, the zoom lens group 103 and the objective lens group 104 are mutually overlapped.
The device further comprises a driving assembly 2 for driving the zoom lens group 103 to move, the driving assembly 2 comprises a driving shell, a driving motor 201, a worm 202, a worm wheel 203 and a transmission screw rod 204, wherein the driving motor 201, the worm 202, the worm wheel 202 and the transmission screw rod 204 are arranged in the driving shell, the worm 202 is connected with the worm wheel 203 in a transmission fit mode, the central axis of the transmission screw rod 204 and the central axis of the worm wheel 203 are mutually overlapped, and one end of the transmission screw rod 204 is connected with one end of the worm wheel 203. The driving assembly 2 is driven by the driving motor 201 to rotate the worm 202, the worm 202 is connected with the worm wheel 203 for transmission, the worm wheel 203 rotates along with the rotation of the worm 202, one end of the driving screw 204 is connected with the worm wheel 203, and the central axis of the driving screw 204 is mutually overlapped with the central axis of the worm wheel 203, so that the driving screw 204 rotates along with the rotation of the worm wheel 203, and it is noted that the driving screw 204 is consistent with the actual screw structure, the tooth pitch of the driving screw 204 of the device is small, and the driving positioning is finer compared with the traditional rotation of the inner cylinder to change the position of the inner cylinder zoom lens group 103.
The driving assembly 2 further comprises a slider connecting piece 205, two ends of the slider connecting piece 205 are respectively connected to the transmission screw rod 204 and the zoom lens group 103, the projection housing 101 is provided with a sliding groove, and the setting direction of the sliding groove is parallel to the setting direction of the transmission screw rod 204, so that the slider connecting piece 205 can move along the sliding groove of the projection housing 101. The invention provides a projector with an automatic obstacle avoidance function, which is provided with a driving assembly 2, wherein the driving assembly 2 comprises a driving shell, a driving motor 201, a worm 202, a worm wheel 203 and a transmission screw rod 204 which are arranged in the driving assembly 2, the driving motor 201 is connected with the worm 202, the worm 202 is in transmission fit with the worm wheel 203, the central axis of the transmission screw rod 204 is mutually overlapped with the central axis of the worm wheel 203, one end of the transmission screw rod 204 is connected with one end of the worm wheel 203, a zoom lens group 103 is connected with the transmission screw rod 204 through a sliding block connecting piece 205, the device adopts a worm wheel and worm transmission device, the zoom lens group 103 is directly driven to perform linear motion, the distance between the zoom lens group 103 and an objective lens group 104 is changed, the focusing function of the projection assembly 1 is realized, compared with the traditional focusing function which is realized by rotating an inner barrel.
In addition, the reason that this device adopted worm gear to carry out the transmission is because, compare in traditional straight-tooth gear meshing drive inner tube and rotate, adopt worm gear to carry out the transmission on the one hand lie in worm gear's structure not only can accomplish the removal of zoom lens group 103 under the circumstances of need not rotating the inner tube, realize focusing, thereby solved traditional projecting apparatus because fixedly on the inner tube be provided with projection lens 105, when the inner tube is scalable when rotating with the urceolus, projection lens 105 also can rotate along with the rotation of inner tube, the optical lens of installing in projection lens 105 also can rotate like this, and some optical lens rotation can influence formation of image, and because the error of processing and assembly, at the lens rotation in-process, probably cause the optical axis skew or slope, especially when focusing range requires great problem to the imaging effect of projecting apparatus.
On the other hand, the worm gear has the self-locking capability, in order to improve the focusing response speed of the projector, the projection assembly 1 on the market focuses on the zoom lens group 103 by adopting a relatively high speed, however, the traditional focusing structure adopts a mode of mutually meshing the spur gears, and the spur gear meshing does not have the self-locking capability, so that the driving motor 201 adopts an excessively high speed, after focusing on the zoom lens group 103, the spur gears continue to rotate due to the inertia of the spur gears, the driving motor 201 is damaged to a certain extent, therefore, the service life of the driving motor 201 of the traditional projector device is not long, the device adopts the worm gear and worm to drive, when the driving motor 201 of the device drives the worm 202 to rotate, the worm 202 then rotates the worm gear 203, so that the zoom lens group 103 is subjected to focusing, and the driving motor 201 stops rotating after the zoom lens group 103 reaches a specified position, and the worm 202 also stops rotating along with the rotation of the driving motor 201, at the moment, even if inertia rotation occurs, the worm 203 continues to rotate, and the self-locking capability of the worm gear and the worm gear 203 further overcomes the inertia of the worm gear and the worm 203 is better, and the inertia of the worm gear 203 is not driven by further, so that the inertia is prevented.
In addition, the device is coaxially connected with the worm wheel 203 through the transmission screw rod 204, and the screw rod and the zoom lens group 103 are connected through the sliding connection block, so that the movement of the zoom lens group 103 is realized, and the positioning of the device on the zoom lens group 103 is far more accurate than the positioning of the traditional zoom lens group 103 because the precision of the transmission screw rod 204 is higher than that of gear engagement, so that the picture projected by the device is more exquisite.
Still include camera, detection module and control terminal, the camera sets up at projection shell's top, camera and detection module communication connection, the camera is used for many projection areas to shoot and will shoot data transmission to detection module, detection module and control terminal communication connection, detection module will shoot data analysis to with analysis result transmission to control terminal, control terminal still with projection assembly 1 and drive assembly communication connection, control terminal control projection assembly 1 and drive assembly do corresponding motion afterwards.
Further, although the device can realize moving the zoom lens group 103 without rotating the inner cylinder through the transmission of the worm gear and the worm, as one end of the worm gear 203 is coaxially connected with the transmission screw rod 204, and the transmission screw rod 204 is slidably provided with the sliding block connecting piece 205, the sliding block connecting piece 205 is connected with the zoom lens group 103, and the rotation of the worm gear and the worm drives the transmission screw rod 204 to rotate, so that the sliding block connecting piece 205 slides on the transmission screw rod 204 to drive the zoom lens group 103 to move, thereby changing the distance between the zoom lens group 103 and the objective lens group 104 and realizing the zooming of the projection assembly 1. In this process, because the transmission screw 204 and the zoom lens group 103 are respectively disposed in the driving housing and the projection housing 101, in order to connect the transmission screw 204 and the zoom lens group 103 by the slider connector 205, the device needs to be provided with a through groove at the surface of the projection housing 101, and the specific structure is that the projection housing 101 includes a first housing 1011 and a second housing 1012, the first housing 1011 is sleeved on the second housing 1012, an interlayer cavity is reserved between the first housing 1011 and the second housing 1012, the sliding groove is communicated with the first housing 1011 and the second housing 1012, the dust-proof belt 106 is provided with a first through groove 1061 adapted to the slider connector 205, the dust-proof belt 106 is disposed in the interlayer cavity, and the dust-proof belt 106 is attached to the first housing 1011 and the second housing 1012 for movement, and it is worth explaining that the driving housing includes a third housing and a fourth housing, the third housing is sleeved on the fourth housing, and a sliding cavity is reserved between the third housing and the fourth housing, the top of the driving housing is provided with a sliding groove, the sliding groove is communicated with the sliding cavity, the device is provided with two dust-proof belts 106, the other dust-proof belt 106 is disposed in the sliding cavity, and the dust-proof belt 106 is attached to the first side wall and the fourth housing 106 is attached to the first through groove 1061. In such design, when the sliding block connecting piece 205 slides, the first through groove 1061 of the dustproof belt 106 is mutually attached to the outer side wall of the sliding block connecting piece 205, so that the dustproof belt 106 moves along with the sliding block connecting piece 205, and therefore the design of the dustproof belt 106 does not influence the movement of the sliding block connecting piece 205, meanwhile, as the two dustproof belts 106 are respectively attached between the first shell 1011 and the second shell 1012 and between the third shell and the fourth shell, in other words, the two dustproof belts 106 are respectively filled in the interlayer inner cavity and the sliding inner cavity, the defect that sliding grooves are formed in the surfaces of the driving shell and the projection shell 101 is overcome, the problem that external dust possibly enters the driving assembly 2 and the projection assembly 1 through the sliding grooves is solved, and the service life of the projection assembly 1 is further prolonged.
In addition, it should be specifically noted that, in order to make the dust-proof belt 106 disposed in the interlayer cavity interfere with the light source 102 emitted from the inside of the projection assembly 1, the side length of the dust-proof belt 106 of the device is always smaller than the side length of the interlayer cavity, so that the dust-proof belt 106 can move therein conveniently, and the dust-proof belt 106 must not be disposed to interfere with the light source 102 emitted from the projection assembly 1.
Meanwhile, the sliding groove and the sliding groove of the device are consistent in size, the width and the length of the sliding groove are larger than those of the first through groove, and the design is used for attaching the first through groove to the sliding block connecting piece, so that the normal operation of the device is guaranteed.
Further, in order to improve the tightness between the first through groove 1061 and the slider connecting piece 205, prevent dust from penetrating from the junction between the first through groove 1061 and the slider connecting piece 205, the side wall of the slider connecting piece 205 of the device is provided with a groove, the first through groove 1061 is provided with a convex rib 1062 matched with the groove, the convex rib 1062 and the groove are tightly attached to each other, and the tightness of the junction between the first through groove 1061 and the slider connecting piece 205 is improved.
Further, in order to prevent the dust-proof belt 106 from shifting during moving, the device is provided with limiting grooves in the second shell 1012 and the fourth shell, the setting direction of the limiting grooves is consistent with that of the sliding grooves, the dust-proof belt 106 is provided with limiting blocks 1063 matched with the limiting grooves, the limiting grooves are tightly attached to the limiting blocks 1063, the dust-proof belt 106 is limited to move along the direction of the sliding grooves, and the dust-proof belt 106 is prevented from shifting, so that the dust-proof belt 106 can be prevented from shifting, on one hand, the dust-proof belt 106 is prevented from being tightly attached to the sliding grooves, and the dust-proof effect on the driving shell and the projection shell 101 is lost; on the other hand, since the first through slot 1061 of the dust-proof belt 106 is tightly attached to the sliding connection member, and the dust-proof belt 106 itself limits the movement direction of itself through the limiting slot, so that the dust-proof belt 106 of the device has the effect of limiting the degree of freedom of the slider connection member 205, specifically, the slider connection member 205 is slidably connected with the driving screw 204, but only limits the movement direction of the slider connection member 205 to move along the direction of the driving screw 204, but cannot limit the rotation of the slider connection member 205 along the central axis direction of the driving screw 204, when the slider connection member 205 changes in angle relative to the driving screw 204, the position of the zoom lens group 103 connected with the slider connection member 205 is indirectly affected, so that the central axes of the zoom lens group 103 and the projection lens group 104 cannot coincide with each other, resulting in that the projection of the projection assembly 1 cannot be focused, and the projection image cannot be clearly displayed. Based on this, the dust-proof belt 106 of the present device can also limit the degree of freedom of rotation of the slider connector 205, so that the angle of the slider connector 205 cannot be changed during the sliding along the driving screw 204.
Further, because the sizes of the slide connectors 205 required by the zoom lens groups 103 with different sizes are inconsistent, in order to reduce the number of dies required by processing and unify the sizes, the dustproof belt 106 of the device is made of TPU materials, so that the first through groove 1061 can be deformed to adapt to the slide connectors 205 with different sizes, and the limiting block 1063 is made of hard materials, so that the limiting block 1063 is prevented from being deformed.
The device is further provided with a moving assembly 3, the moving assembly 3 comprises a moving shell 301 with a hollow interior, a steering rod 302, a moving wheel 303, a driving gear 304 and a moving motor 305, the projection assembly 1 is arranged at the top of the moving shell 301, the steering rod 302, the moving wheel 303 and the driving gear 304 are provided with a plurality of, the steering rod 302, the moving wheel 303 and the driving gear 304 are correspondingly matched, any steering rod 302 is vertically arranged in the moving shell 301, one end of the steering rod 302 is exposed out of the moving shell 301, the other end of the steering rod 302 is arranged in the moving shell 301, one end of the steering rod 302 is exposed out of the moving shell 301 and connected with the corresponding moving wheel 303, the other end of the steering rod 302 is connected with the corresponding driving gear 304, meanwhile, a driving belt is jointly connected with all the driving gears 304 in a meshed mode, the output end of the moving motor 305 is connected with the driving belt in a meshed mode, the driving belt is driven to move, and then the driving gear 304 is controlled to rotate simultaneously, the direction of the steering rod 303 can rotate simultaneously, the moving assembly 3 is guaranteed to always advance straightly towards one direction, the moving path of the device is convenient to confirm the moving path of the device, and the driving gear 304 is a bevel gear 304 is designed to be high in precision, the design, the self-locking distance of the moving assembly 3 is not easy to confirm the moving path can be self-locked by the moving path 3 due to the fact that the self-locking effect is high in design, and the self-locking distance can be confirmed.
The device is further provided with a lifting assembly 4, the lifting assembly 4 comprises a lifting motor 401, a lifting screw rod 402, a lifting table 403 and a connecting rod 404, the lifting motor 401 is arranged at the top of the movable shell 301, the output end of the lifting motor is coaxially connected with one end of the lifting screw rod 402, one end of the lifting table 403 is hinged to the movable shell 301, the other end of the lifting table is hinged to one end of the connecting rod 404, the other end of the connecting rod 404 is connected with the lifting screw rod 402 through a sliding block, and the projection assembly 1 is arranged at the top of the lifting table 403. When lifting motor 401 begins to work, drive lifting lead screw 402 rotates, the slider of setting on lifting lead screw 402 is followed the removal of lifting lead screw 402 and is slided, at the in-process that the slider removed, because the existence of connecting rod 404, lead to the lifting angle that lifting platform 403 is continuous, and then change projection assembly 1's projection angle, for the lifting structure of the projecting apparatus on the market now, this device adopts lifting lead screw 402 to change projection assembly 1's projection angle, because lifting lead screw 402's existence for projection assembly 1's projection angle can more careful regulation, not only can confirm the angle of lifting through lifting motor 401's rotation, fine angle adjustment simultaneously can satisfy the use in more occasions.
Further, the device is provided with three kinds of automatic obstacle avoidance modes altogether, the mode is kept away including the removal that corresponds and is provided with the removal subassembly 3 respectively, the lifting that corresponds and is provided with lifting subassembly 4 keeps away the obstacle mode and be provided with the scaling projection of projection subassembly 1 and keep away the obstacle mode, the device still is provided with camera 5 and master control terminal, camera 5 and master control terminal communication connection, camera 5 sets up the top at projection housing 101, be used for shooing the projection region, in addition, master control terminal still respectively with driving motor 201, moving motor 305 and lifting motor 401 communication connection, the operating personnel set up corresponding motion model through the structure and the parameter of removal subassembly 3 in advance, lifting subassembly 4 and driving subassembly 2 respectively, and with three kinds of motion models input into master control terminal, master control terminal is because still respectively with driving motor 201, moving motor 305 and lifting motor 401 communication connection, therefore master control terminal can receive the rotation data from driving motor 201, moving motor 305 and lifting motor 401, with data input to corresponding motion model, can obtain the movement position of projection subassembly 1 respectively, the angle and the movement distance 103 of zoom lens group, and the distance between the projection lens group 104 is further calculated according to the movement distance of the lens group, the lens group is big.
The specific working flow is as follows: firstly, a camera 5 shoots a projection area, then data are transmitted into a main control terminal, the main control terminal judges whether a shielding object in the area affects the projected picture quality, and if not, a projection picture is directly projected into the projection area; if so, the movement by the moving assembly 3 is preferentially simulated, and whether the shielding object can be automatically avoided is judged. Further, if the simulation result can avoid the shielding object, the mobile motor 305 is preferentially controlled to move the device to a proper position for projection; if the simulation result cannot avoid the shielding object, simulating the lifting of the lifting assembly 4, judging whether the shielding object can be automatically avoided, if the simulation result can avoid the shielding object, preferentially controlling the lifting motor 401, and lifting the projection assembly 1 to a proper angle for projection; if the simulation result cannot avoid the shielding object, a method of reducing the projection picture is adopted, the projection picture is reduced by changing the position of the zoom lens group 103, and the reduced projection picture is projected into the projection area, so that the automatic obstacle avoidance function of the device is completed.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (6)
1. A projector with automatic obstacle avoidance function, characterized in that: the lens center axes of the projection lens, the zoom lens group and the objective lens group are mutually overlapped;
the device comprises a projection shell, a worm wheel, a driving component and a driving component, wherein the driving component is used for driving the zoom lens group to move and comprises a driving shell, a driving motor, a worm wheel and a transmission screw rod, the driving motor, the worm wheel and the driving component are arranged in the driving shell, the driving shell is arranged at the bottom of the projection shell, the driving motor is connected with the worm, the worm is in transmission fit with the worm wheel, the central axis of the transmission screw rod is mutually overlapped with the central axis of the worm wheel, and one end of the transmission screw rod is connected with one end of the worm wheel;
the driving assembly further comprises a sliding block connecting piece, two ends of the sliding block connecting piece are respectively connected with the transmission screw rod and the zoom lens group, the projection shell is provided with a sliding groove, and the sliding block connecting piece moves along the sliding groove of the projection shell;
the projection assembly further comprises a dust-proof belt, the projection housing comprises a first housing and a second housing, the second housing is sleeved on the first housing, an interlayer cavity is formed between the first housing and the second housing, the sliding groove is communicated with the interlayer cavity, and the dust-proof belt is arranged in the interlayer cavity in a sliding manner and is connected with the sliding block connecting piece;
the dustproof belt is provided with a first through groove, the side wall of the sliding block connecting piece is provided with a groove, the first through groove is provided with a convex rib matched with the groove, and the groove is attached to the convex rib;
the second shell is provided with a limiting groove, the dustproof belt is provided with a limiting block matched with the limiting groove, the limiting groove is tightly attached to the limiting block, and the dustproof belt is limited to move along the direction of the through groove;
the dustproof belt is made of TPU.
2. The projector with an automatic obstacle avoidance function according to claim 1, wherein: still include camera, detection module and control terminal, the camera sets up the top of projection casing, the camera with detection module communication connection, the camera is used for shooing the projection area and will shoot data transmission extremely detection module, detection module with control terminal communication connection, just control terminal still with projection assembly and drive assembly communication connection.
3. The projector with an automatic obstacle avoidance function according to claim 1, wherein: the driving shell is provided with a sliding inner cavity, the top of the driving shell is provided with a sliding groove, the sliding groove is communicated with the sliding inner cavity, two groups of dustproof belts are arranged, and the other group of dustproof belts are arranged in the sliding inner cavity in a sliding manner and are connected with the sliding block connecting piece through the sliding groove.
4. A projector with automatic obstacle avoidance function according to claim 3, wherein: the sliding groove is consistent with the sliding groove in size, and the width and length dimensions of the sliding groove are larger than those of the first through groove.
5. The projector with an automatic obstacle avoidance function according to claim 2, wherein: the projection system comprises a projection assembly, a control terminal and a control terminal, wherein the projection assembly comprises a movable shell, a steering rod, a movable wheel, a driving gear and a movable motor, the movable shell is hollow in the interior, the projection assembly is arranged at the top of the movable shell, the steering rod is vertically arranged at the bottom of the movable shell, the bottom of the steering rod is connected with the movable wheel, the other end of the steering rod is fixedly arranged on the driving gear in a penetrating manner, the movable motor is used for driving the driving gear to rotate, and the movable motor is in communication connection with the control terminal.
6. The projector with automatic obstacle avoidance function according to claim 5, wherein: the lifting device comprises a lifting shell, and is characterized by further comprising a lifting assembly, wherein the lifting assembly comprises a lifting motor, a lifting screw rod, a lifting table and a connecting rod, the top of the lifting table is provided with the projection assembly, the lifting motor is arranged at the top of the moving shell, the output end of the lifting motor is coaxially connected with one end of the lifting screw rod, one end of the lifting table is hinged to the moving shell, the other end of the lifting table is hinged to one end of the connecting rod, the other end of the connecting rod is connected with the screw rod through a sliding block, and the lifting motor is in communication connection with the control terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310533236.0A CN116243542B (en) | 2023-05-12 | 2023-05-12 | Projector with automatic obstacle avoidance function |
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| CN202310533236.0A CN116243542B (en) | 2023-05-12 | 2023-05-12 | Projector with automatic obstacle avoidance function |
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| CN116849583B (en) * | 2023-06-30 | 2024-06-11 | 北理工郑州智能科技研究院 | Electric focusing device for endoscope |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1172690A (en) * | 1997-08-29 | 1999-03-16 | Canon Inc | Lens barrel |
| JP2005165128A (en) * | 2003-12-04 | 2005-06-23 | Nec Viewtechnology Ltd | Projector with obstacle detecting device and obstacle detecting method |
| JP4601569B2 (en) * | 2006-03-20 | 2010-12-22 | 三菱電機株式会社 | LENS DRIVE DEVICE AND IMAGING DEVICE USING THE SAME |
| CN201853047U (en) * | 2010-11-12 | 2011-06-01 | 北京环宇蓝博科技有限公司 | Improved ventilation and dust-prevention device of optical machine case |
| CN203535295U (en) * | 2013-10-31 | 2014-04-09 | 四川九洲电器集团有限责任公司 | Automatic zooming mechanism |
| JP2015145894A (en) * | 2014-01-31 | 2015-08-13 | キヤノン株式会社 | Projection type display device |
| CN104656224B (en) * | 2015-02-12 | 2016-11-30 | 中国科学院长春光学精密机械与物理研究所 | It is applied to the high accuracy focus adjusting mechanism of space optical remote sensor |
| CN208780978U (en) * | 2018-09-28 | 2019-04-23 | 歌尔科技有限公司 | It is a kind of can automatic focusing projector |
| CN213091987U (en) * | 2020-09-08 | 2021-04-30 | 深圳市大晟云视传媒科技有限公司 | Variable-focus ultra-short-focus projection lens |
| CN214311260U (en) * | 2021-01-14 | 2021-09-28 | 南阳市天纳光电科技有限公司 | Focusing device of projection lens |
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