CN112984303B - Turning positioning type screen projection device for teaching - Google Patents

Turning positioning type screen projection device for teaching Download PDF

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Publication number
CN112984303B
CN112984303B CN202110187924.7A CN202110187924A CN112984303B CN 112984303 B CN112984303 B CN 112984303B CN 202110187924 A CN202110187924 A CN 202110187924A CN 112984303 B CN112984303 B CN 112984303B
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China
Prior art keywords
projector
fixing
seat
rotating
component
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CN202110187924.7A
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CN112984303A (en
Inventor
魏巍
陈其超
门正兴
梁潘
顾萍
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Chengdu Aeronautic Polytechnic
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Chengdu Aeronautic Polytechnic
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Publication of CN112984303A publication Critical patent/CN112984303A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043—Allowing translations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances
    • G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Projection Apparatus (AREA)
  • Accessories Of Cameras (AREA)

Abstract

The invention discloses a turnover positioning type screen projecting device for teaching, which comprises a base, an installation platform, a projector, an angle adjusting component, a cleaning component, a first fixing component and a second fixing component, wherein the first fixing component and the second fixing component are respectively installed on base bodies on two sides of the installation platform, the projector is installed on the installation platform through the first fixing component and the second fixing component, the angle adjusting component is installed between the base and the installation platform, and the cleaning component is installed on the angle adjusting component and realizes the cleaning of a camera of the projector. The projector is arranged on the mounting platform, the mounting angle of the projector can be adjusted through the angle adjusting device, and the cleaning assembly is started to complete the cleaning of the camera of the projector while the angle of the projector is adjusted; when the projector needs to be fixed, the first fixing component and the second fixing component are linked to realize clamping fixation and self-locking of multiple mounting positions of the projector.

Description

Turning positioning type screen projection device for teaching
Technical Field
The invention relates to the technical field of projector supports, in particular to a turnover positioning type screen projecting device for teaching.
Background
The projector is often all needed to be used in the teaching process, and the projector is fixed or the visual angle is adjusted through a support or a hanging bracket according to the requirement of projection in the installation process. In the prior art, there is a device for fixing the projector, which is used to adjust the projection angle and position of the projector. However, these devices of the prior art have the following disadvantages:
the first is that: although the existing device can realize the fixation between the projector and the bracket, the fixation is mostly realized by screwing a bolt, and the synchronous clamping of the projector at multiple positions cannot be realized through structural improvement when the projector is placed; secondly, the following steps: although the existing device can realize the angle adjustment of the projector, the device needs to be fixed again after the adjustment, and cannot realize the automatic locking after the angle adjustment through the structural improvement; thirdly, the method comprises the following steps: the existing device can not realize the cleaning of the projector lens while realizing the angle adjustment of the projector.
In view of this, the present invention provides a screen projection apparatus with a double-turning positioning structure to achieve the purpose of having more practical value.
Disclosure of Invention
The invention aims to provide a turnover positioning type screen projecting device for teaching, which can synchronously clean a lens of a projector when the angle of the projector is adjusted, and can realize synchronous clamping fixation and self-locking of the projector by utilizing a plurality of fixing structures after the angle of the projector is adjusted so as to solve the technical problems in the prior art.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a screen device is thrown to upset locate mode of teaching usefulness, includes base, mounting platform, projecting apparatus, angle adjusting part, clean subassembly, first fixed subassembly and the fixed subassembly of second, all install on the pedestal of mounting platform's both sides first fixed subassembly with the fixed subassembly of second, the projecting apparatus passes through first fixed subassembly reaches the fixed subassembly of second is installed on the mounting platform, angle adjusting part installs between base and the mounting platform, clean unit mount is in on the angle adjusting part and realize right the cleanness of the camera of projecting apparatus.
The projector is arranged on the mounting platform above the base, the mounting angle of the projector can be adjusted through the angle adjusting device, and the cleaning assembly is started to complete the cleaning of the camera of the projector while the angle of the projector is adjusted; when the projector needs to be fixed, the first fixing component and the second fixing component are linked to realize clamping fixation and self-locking of multiple mounting positions of the projector.
Furthermore, the middle parts of the two ends of the base are respectively provided with a fixing seat, and a plurality of fixing bolts are installed on the fixing seats.
The beneficial effects of the preferred embodiment are as follows: the number of fixing bolt of installation on the fixing base can be 2, and the symmetry is installed on the fixing base, and fixing base and fixing bolt have constituteed elasticity locking structure jointly, and after fixing bolt screwed up rather than the screw-thread fit of mounted position department, the elasticity locking of fixing bolt was realized to the elasticity of accessible fixing base.
Further, the angle adjusting assembly comprises rotating arms and a connecting frame, the connecting frame is installed on the base through a rotating shaft, the number of the rotating arms is 2, the 2 rotating arms are respectively connected to the base bodies on the two sides of the installation platform, one end of each rotating arm is connected with the corresponding base body, and the other end of each rotating arm is connected with one end of the corresponding connecting frame through the rotating assembly.
The beneficial effects of the preferred embodiment are as follows: all be connected with the rotor arm on the pedestal of mounting platform's both sides, all rotate on two rotor arms and be connected with the link, the link is installed on the base, and the contained angle between rotor arm and the link is accomplished through rotating assembly, can make the rotor arm rotate certain angle around the link through starting rotating assembly promptly to accomplish the regulation of mounting platform's angle, finally realize the regulation of the installation angle of projecting apparatus.
Further, the rotating assembly comprises a rotating seat, a gear and an adjusting rod, a rotating shaft is arranged at the joint of the other end of the rotating arm and one end of the connecting frame, the gear is installed on the rotating shaft, the rotating seat is installed on the connecting frame, the adjusting rod is connected with the rotating seat in a rotating mode, and a threaded portion meshed with the gear is arranged on the adjusting rod.
The beneficial effects of the preferred embodiment are as follows: when the adjusting rod is rotated, the gear rotates to drive the rotating arm connected with the gear to rotate, so that the rotating arm can rotate for a certain angle around the connecting frame, and the angle can be adjusted by the mounting platform.
Furthermore, a positioning bolt is arranged on the connecting frame.
The beneficial effects of the preferred embodiment are as follows: the connecting frame is fixedly arranged on the base through the positioning bolts.
Further, clean subassembly includes bearing board, two clean bottles, connecting pipe and pinch bar, two clean bottle respectively fixed mounting be in the both ends of bearing board, two be connected with one on the clean bottle respectively the connecting pipe, the end of connecting pipe all be equipped with the camera complex spray tube of projecting apparatus, two the equal sliding connection in top of clean bottle has the pinch bar, the top of pinch bar with mounting platform's diapire fixed connection.
The beneficial effects of the preferred embodiment are as follows: when the mounting platform rotates along with the rotating arm, the extrusion rod on one of the cleaning bottles extrudes towards the inside of the cleaning bottle, and when the cleaning bottle is extruded by the extrusion rod, the cleaning of the camera of the projector can be realized by the airflow sprayed out from the spray pipe.
Further, the first fixing component comprises a fixing block, an elastic telescopic rod and a first toggle block, the fixing block is arranged on the inner side of the seat body, the first toggle block is arranged on the outer side of the seat body, the elastic telescopic rod penetrates through the seat body and is in sliding connection with the seat body, the first end of the elastic telescopic rod is connected with the fixing block, the second end of the elastic telescopic rod is connected with the first toggle block, a first elastic element is sleeved on the elastic telescopic rod on the inner side of the seat body, and the first elastic element is a first spring;
the second fixing component is arranged on the seat body and positioned below the first fixing component, and the second fixing component and the first fixing component jointly form a lever driving structure.
The beneficial effects of the preferred embodiment are as follows: when the first fixing component moves outwards and is clamped and fixed with the projector, the clamping and locking between the second fixing component and the projector are realized under the stirring of the stirring element of the second fixing component.
Furthermore, the fixing block is provided with a protrusion, and the protrusion is matched with a clamping groove in the projector.
The beneficial effects of the preferred embodiment are as follows: the elastic limit structure of the projector is formed by the bulges on the fixed block and the clamping grooves on the projector.
Furthermore, the second fixing component comprises a clamping seat, a sliding rod, a rotating connecting seat and a second shifting block, the clamping seat is connected to the seat body in a sliding mode, the clamping seat is provided with an insertion groove matched with the support claw of the projector, the number of the sliding rods is 2, the sliding rods are symmetrically arranged at two ends of the clamping seat, one end of each sliding rod is fixedly connected with the side wall of the clamping seat, the other end of each sliding rod penetrates through the seat body and is connected with the seat body in a sliding mode, the rotating connecting seat is fixedly arranged on the outer wall of the seat body, the second shifting block is rotatably arranged on the rotating connecting seat, a second elastic element is sleeved on the rod portion, located on the outer side of the seat body, of each sliding rod, and the second elastic element is a second spring.
The beneficial effects of the preferred embodiment are as follows: 2, second elastic elements are sleeved on the sliding rods, and the two second elastic elements and the sliding rods form an elastic reset structure of the clamping seat; one end of the clamping seat is provided with a plugging groove aligned with the support claw.
Furthermore, the lever driving structure comprises a first toggle block and a second toggle block, the tail end of the second toggle block abuts against the side wall of the clamping seat, and the head end of the second toggle block extends out of the first toggle block and abuts against the first toggle block; the elastic force of the first spring is greater than the elastic force of the second spring.
The beneficial effects of the preferred embodiment are as follows: when the first shifting block moves outwards and is clamped and fixed with the projector, the first shifting block can drive the second shifting block to start shifting, and clamping locking between the clamping seat and the supporting claw is realized under shifting of the second shifting block; because the elasticity of the first spring is greater than the elasticity of the second spring, and the elasticity of the elastic telescopic rod is greater than the elasticity of the sliding rod, the clamping seat can be extruded, and the projector can be disassembled when the second spring is extruded and contracted.
The invention has the beneficial effects that:
the invention improves the structure of the fixing device of the projector which is commonly used in the past, and the improved structure can realize synchronous clamping fixation and self-locking of the projector by using a plurality of fixing structures after the angle of the projector is adjusted, and does not influence the quick disassembly of the projector. Outside the turbine worm structure can be locked automatically after the angle modulation, when mounting platform along with the rotor arm pivoted, the pressure bar on one of them clean bottle to the inside extrusion of clean bottle, the terminal spray tube of connecting pipe on two clean bottles is adjusted well with the upper and lower both ends of the camera of projecting apparatus respectively, and when clean bottle was extruded by the pressure bar, the cleanness to the camera of projecting apparatus can be realized to spray tube department spun air current.
When the projector is fixed, a lever structure driving structure which is formed by the rotating connecting seat, the second shifting block, the clamping seat and the first shifting block is skillfully utilized, so that the head end of the second shifting block is contacted with the first shifting block, and the tail end of the second shifting block is contacted with the clamping seat, so that when the first shifting block moves outwards and is clamped and fixed with the projector, the tail end of the second shifting block receives extrusion and pushes the clamping seat to move towards the inner side of the seat body, and the clamping and locking of the clamping seat and the supporting claw are realized; the elasticity of the elastic telescopic rod is larger than that of the sliding rod, so that the clamping seat can be extruded, and the projector can be disassembled when the second spring is extruded and contracted.
Drawings
FIG. 1 is a schematic view of an overall structure of a turn-over positioning type screen projecting device for teaching according to the present invention;
FIG. 2 is a second schematic view of the overall structure of the turn-over positioning type screen projector for teaching according to the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 4 is one of the schematic axial views of the first and second fixing assemblies of the present invention;
FIG. 5 is an enlarged view of the structure of FIG. 4 at B according to the present invention;
FIG. 6 is a second schematic axial view of the first and second fixing elements of the present invention;
FIG. 7 is an enlarged view of the structure of FIG. 6 at C in accordance with the present invention;
FIG. 8 is a left side view of the structure of FIG. 4 in accordance with the present invention;
FIG. 9 is an enlarged view of FIG. 8 at D in accordance with the present invention;
in the figure, 1-base, 101-fixed base, 102-fixed bolt, 2-mounting platform, 201-base, 3-projector, 301-supporting jaw, 4-angle adjusting component, 401-rotating arm, 402-connecting frame, 403-rotating base, 404-gear, 405-adjusting rod, 406-rotating shaft, 407-positioning bolt, 5-cleaning component, 501-supporting plate, 502-cleaning bottle, 503-connecting pipe, 504-extruding rod, 505-spraying pipe, 6-first fixing component, 601-fixed block, 602-elastic telescopic rod, 603-first toggle block, 604-first spring, 605-protrusion, 7-second fixing component, 701-clamping base, 702-sliding rod, 703-second spring, 704-rotating connecting base, 705-second toggle block and 8-rotating shaft.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example 1
Referring to fig. 1-9, the present invention provides a technical solution:
referring to fig. 1-2, a turning positioning type screen projecting device for teaching includes a base 1, an installation platform 2, a projector 3, an angle adjusting assembly 4, a cleaning assembly 5, a first fixing assembly 6 and a second fixing assembly 7, wherein the first fixing assembly 6 and the second fixing assembly 7 are installed on base bodies 201 on two sides of the installation platform 2, the projector 3 is installed on the installation platform 2 through the first fixing assembly 6 and the second fixing assembly 7, the angle adjusting assembly 4 is installed between the base 1 and the installation platform 2, and the cleaning assembly 5 is installed on the angle adjusting assembly 4 and cleans a camera of the projector 3.
In the embodiment, the projector 3 is installed on the installation platform 2 above the base 1, the installation angle of the projector 3 can be adjusted through the angle adjusting device, and the cleaning assembly 5 is started to complete the cleaning of the camera of the projector 3 while the angle of the projector is adjusted; when the projector 3 needs to be fixed, the first fixing component 6 and the second fixing component 7 are linked to realize clamping fixation and self-locking of multiple mounting positions of the projector 3.
Referring to fig. 1-2, fixing bases 101 are disposed at the middle portions of the two ends of the base 1, and a plurality of fixing bolts 102 are installed on the fixing bases 101.
In this embodiment, the number of the fixing bolts 102 installed on the fixing base 101 may be 2, the fixing base 101 is symmetrically installed on the fixing base 101, the fixing base 101 and the fixing bolts 102 jointly form an elastic anti-loosening structure, and after the fixing bolts 102 are screwed with the threads at the installation positions, the elastic anti-loosening of the fixing bolts 102 can be realized by the elastic force of the fixing base 101.
Specifically, the left end face and the right end face of the base 1 are both welded with one fixing seat 101, the two fixing seats 101 are both rectangular plate-shaped, and each fixing seat 101 is inserted with two fixing bolts 102; the bottom end face of fixing base 101 and base 1 is not parallel and level, and the interval of fixing base 101 and the bottom end face of base 1 sets up 2cm generally.
Referring to fig. 1 to 3, the angle adjusting assembly 4 includes a rotating arm 401 and a connecting frame 402, the connecting frame 402 is installed on the base 1 through a rotating shaft 8, the number of the rotating arms 401 is 2, 2 rotating arms 401 are respectively connected to the base bodies 201 on two sides of the installation platform 2, one end of each rotating arm 401 is connected to the base body 201, and the other end of each rotating arm 401 is connected to one end of the connecting frame 402 through a rotating assembly.
In this embodiment, all be connected with rotor arm 401 on the pedestal 201 of mounting platform 2's both sides, all rotate on two rotor arms 401 and be connected with link 402, link 402 is installed on base 1, the contained angle between rotor arm 401 and the link 402 is accomplished through rotating assembly, can make rotor arm 401 rotate certain angle around link 402 through starting rotating assembly promptly, thereby accomplish the regulation of mounting platform 2's angle, finally realize the regulation of the installation angle of projecting apparatus 3.
Referring to fig. 3, the rotating assembly includes a rotating seat 403, a gear 404 and an adjusting rod 405, a rotating shaft 406 is disposed at a connection position between the other end of the rotating arm 401 and one end of the connecting frame 402, the gear 404 is mounted on the rotating shaft 406, the rotating seat 403 is mounted on the connecting frame 402, the adjusting rod 405 is rotatably connected to the rotating seat 403, and a threaded portion engaged with the gear 404 is disposed on the adjusting rod 405.
In this embodiment, the use method of the rotating assembly is as follows: because the thread portion on the adjusting rod 405 and the gear 404 form a worm gear structure, when the adjusting rod 405 is rotated, the gear 404 rotates to drive the rotating arm 401 connected with the gear 404 to rotate, so that the rotating arm 401 can rotate for a certain angle around the connecting frame 402, namely, the installation platform 2 can realize the angle adjustment, the adjusting rod 405 stops rotating, and the worm gear structure can be automatically locked after the angle adjustment is finished.
Referring to fig. 1, a positioning bolt 407 is disposed on the connecting frame 402.
In the present embodiment, the fixing bolt 407 fixedly mounts the attachment bracket 402 to the base 1.
Referring to fig. 2, the cleaning assembly 5 includes a supporting plate 501, two cleaning bottles 502, a connecting pipe 503 and an extruding rod 504, the two cleaning bottles 502 are respectively and fixedly mounted at two ends of the supporting plate 501, the two cleaning bottles 502 are respectively connected with one connecting pipe 503, the tail ends of the connecting pipes 503 are respectively provided with a nozzle 505 matched with the camera of the projector 3, the top ends of the two cleaning bottles 502 are respectively and slidably connected with the extruding rod 504, and the top end of the extruding rod 504 is fixedly connected with the bottom wall of the mounting platform 2.
In this embodiment, when the mounting platform 2 rotates along with the rotating arm 401, the squeezing rod 504 on one of the cleaning bottles 502 squeezes towards the inside of the cleaning bottle 502, the nozzles 505 at the ends of the connecting pipes 503 on the two cleaning bottles 502 are aligned with the upper end and the lower end of the camera of the projector 3, respectively, and when the cleaning bottles 502 are squeezed by the squeezing rod 504, the airflow ejected from the nozzles 505 can clean the camera of the projector 3.
Referring to fig. 4-5, the first fixing assembly 6 includes a fixing block 601, an elastic expansion link 602 and a first toggle block 603, the fixing block 601 is disposed at an inner side of the seat body 201, the first toggle block 603 is disposed at an outer side of the seat body 201, the elastic expansion link 602 is disposed through the seat body 201 and slidably connected to the seat body 201, a first end of the elastic expansion link 602 is connected to the fixing block 601, a second end of the elastic expansion link 602 is connected to the first toggle block 603, a first elastic element is sleeved on the elastic expansion link 602 at the inner side of the seat body 201, and the first elastic element is a first spring 604;
the second fixing component 7 is disposed on the base 201 and below the first fixing component 6, and forms a lever driving structure together with the first fixing component 6.
In this embodiment, the quantity of the elastic telescopic rods 602 has 2, each elastic telescopic rod 602 is provided with a first elastic element, two first elastic elements and the elastic telescopic rod 602 jointly form an elastic stretching mechanism, the second fixing component 7 and the first fixing component 6 jointly form a lever driving structure, and therefore when the first fixing component 6 moves outwards and is clamped and fixed with the projector 3, the clamping locking between the second fixing component 7 and the projector 3 is realized under the stirring of the stirring element of the second fixing component 7.
Referring to fig. 7, a protrusion 605 is disposed on the fixing block 601, and the protrusion 605 is matched with the slot on the projector 3.
In this embodiment, the protrusion 605 on the fixing block 601 and the slot on the projector 3 together constitute an elastic limiting structure of the projector 3.
Referring to fig. 7, the second fixing assembly 7 includes a clamping seat 701, a sliding rod 702, a rotating connecting seat 704 and a second toggle block 705, the clamping seat 701 is slidably connected to the seat body 201, the clamping seat 701 is provided with an insertion slot matched with the supporting claw 301 of the projector 3, the number of the sliding rods 702 is 2, the 2 sliding rods 702 are symmetrically disposed at two ends of the clamping seat 701, one end of the sliding rod 702 is fixedly connected with a side wall of the clamping seat 701, the other end of the sliding rod 702 penetrates through the seat body 201 and is slidably connected with the seat body 201, the rotating connecting seat 704 is fixedly mounted on an outer wall of the seat body 201, the second toggle block 705 is rotatably mounted on the rotating connecting seat 704, a rod portion of the sliding rod 702 located outside the seat body 201 is sleeved with a second elastic element, and the second elastic element is a second spring 703.
In this embodiment, 2 sliding rods 702 are sleeved with second elastic elements, and then the two second elastic elements and the sliding rods 702 form an elastic reset structure of the clamping seat 701 together; one end of the clamping seat 701 is provided with a plugging groove aligned with the supporting claw 301.
Referring to fig. 8-9, the lever driving structure includes a first toggle block 603 and a second toggle block 705, a tail end of the second toggle block 705 abuts against a sidewall of the clamping seat 701, and a head end of the second toggle block 705 extends out of the first toggle block 603 and abuts against the first toggle block 603; the elastic force of the first spring 604 is greater than that of the second spring 703.
In this embodiment, while the first toggle block 603 moves outward and is clamped and fixed with the projector 3, the first toggle block 603 can drive the second toggle block 705 to start toggling, and the clamping and locking between the clamping seat 701 and the supporting claw 301 are realized under the toggling of the second toggle block 705; since the elastic force of the first spring 604 is greater than the elastic force of the second spring 703, and the elastic force of the elastic expansion link 602 is greater than the elastic force of the sliding rod 702, the clamping seat 701 can be squeezed, and the projector 3 can be detached when the second spring 703 is squeezed and contracted.
In this embodiment, the use method of the flip-flop positioning type screen projection device is as follows:
when the installation angle of the projector 3 is adjusted, the lens or the camera is synchronously cleaned, and when the adjusting rod 405 is rotated, the gear 404 rotates to drive the rotating arm 401 connected with the gear 404 to rotate, so that the rotating arm 401 can rotate by a certain angle around the connecting frame 402, that is, the installation platform 2 can adjust the angle, the adjusting rod 405 stops rotating, and the worm and gear structure can be automatically locked after the angle adjustment is finished; when the mounting platform 2 rotates along with the rotating arm 401, the squeezing rod 504 on one of the cleaning bottles 502 squeezes towards the inside of the cleaning bottle 502, the spray pipes 505 at the ends of the connecting pipes 503 on the two cleaning bottles 502 are respectively aligned with the upper end and the lower end of the camera of the projector 3, and when the cleaning bottles 502 are squeezed by the squeezing rod 504, the air flow sprayed out of the spray pipes 505 can clean the camera of the projector 3.
When the projector 3 is fixed, the head end of the second shifting block 705 is in contact with the first shifting block 603, the tail end of the second shifting block 705 is in contact with the clamping seat 701, and the rotary connecting seat 704, the second shifting block 705, the clamping seat 701 and the first shifting block 603 jointly form a lever structure driving structure, so that when the first shifting block 603 moves outwards and is clamped and fixed with the projector 3, the tail end of the second shifting block 705 is extruded and pushes the clamping seat 701 to move towards the inner side of the seat body 201, and clamping locking of the clamping seat 701 and the supporting claw 301 is realized; the elastic force of the elastic expansion link 602 is greater than that of the sliding rod 702, so that the clamping seat 701 can be pressed, and the projector 3 can be detached when the second spring 703 is pressed and contracted.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. The utility model provides a screen device is thrown to upset locate mode of teaching usefulness which characterized in that: the projector cleaning device comprises a base (1), an installation platform (2), a projector (3), an angle adjusting component (4), a cleaning component (5), a first fixing component (6) and a second fixing component (7), wherein the first fixing component (6) and the second fixing component (7) are installed on base bodies (201) on two sides of the installation platform (2), the projector (3) is installed on the installation platform (2) through the first fixing component (6) and the second fixing component (7), the angle adjusting component (4) is installed between the base (1) and the installation platform (2), and the cleaning component (5) is installed on the angle adjusting component (4) and cleans a camera of the projector (3);
the angle adjusting assembly (4) comprises rotating arms (401) and a connecting frame (402), the connecting frame (402) is installed on the base (1) through a rotating shaft (8), the number of the rotating arms (401) is 2, the 2 rotating arms (401) are respectively connected to the base bodies (201) on two sides of the installation platform (2), one end of each rotating arm (401) is connected with the corresponding base body (201), and the other end of each rotating arm (401) is connected with one end of the connecting frame (402) through a rotating assembly;
the rotating assembly comprises a rotating seat (403), a gear (404) and an adjusting rod (405), the other end of the rotating arm (401) is connected with the connecting position of one end of the connecting frame (402) and is provided with a rotating shaft (406), the gear (404) is installed on the rotating shaft (406), the rotating seat (403) is installed on the connecting frame (402), the adjusting rod (405) is connected with the rotating seat (403) in a rotating mode, and a threaded portion meshed with the gear (404) is arranged on the adjusting rod (405).
2. The apparatus of claim 1, wherein: the middle parts of the two ends of the base (1) are respectively provided with a fixing seat (101), and a plurality of fixing bolts (102) are installed on the fixing seats (101).
3. The apparatus of claim 1, wherein: and a positioning bolt (407) is arranged on the connecting frame (402).
4. The flip-flop positioning type projection screen device for teaching according to claim 1, wherein: clean subassembly (5) are including bearing board (501), two clean bottle (502), connecting pipe (503) and pinch bar (504), two clean bottle (502) fixed mounting respectively in the both ends of bearing board (501), two be connected with one on clean bottle (502) respectively connecting pipe (503), the end of connecting pipe (503) all be equipped with camera complex spray tube (505) of projecting apparatus (3), two the equal sliding connection in top of clean bottle (502) has pinch bar (504), the top of pinch bar (504) with the diapire fixed connection of mounting platform (2).
5. The apparatus of claim 1, wherein: the first fixing component (6) comprises a fixing block (601), an elastic telescopic rod (602) and a first toggle block (603), the fixing block (601) is arranged on the inner side of the seat body (201), the first toggle block (603) is arranged on the outer side of the seat body (201), the elastic telescopic rod (602) is arranged on the seat body (201) in a penetrating manner and is in sliding connection with the seat body (201), the first end of the elastic telescopic rod (602) is connected with the fixing block (601), the second end of the elastic telescopic rod (602) is connected with the first toggle block (603), a first elastic element is sleeved on the elastic telescopic rod (602) on the inner side of the seat body (201), and the first elastic element is a first spring (604);
the second fixing component (7) is arranged on the base body (201) and located below the first fixing component (6), and forms a lever driving structure together with the first fixing component (6).
6. The apparatus of claim 5, wherein: the fixing block (601) is provided with a protrusion (605), and the protrusion (605) is matched with a clamping groove in the projector (3).
7. The apparatus of claim 5, wherein: the second fixing assembly (7) comprises a clamping seat (701), a sliding rod (702), a rotating connecting seat (704) and a second poking block (705), the clamping seat (701) is connected to the seat body (201) in a sliding mode, the clamping seat (701) is provided with inserting grooves matched with the supporting claws (301) of the projector (3), the sliding rods (702) are 2 in number and are symmetrically arranged at two ends of the clamping seat (701), one end of each sliding rod (702) is fixedly connected with the side wall of the clamping seat (701), the other end of each sliding rod (702) penetrates through the seat body (201) and is connected with the seat body (201) in a sliding mode, the rotating connecting seat (704) is fixedly installed on the outer wall of the seat body (201), the second poking block (705) is rotatably installed on the rotating connecting seat (704), a second elastic element is sleeved on the seat body (201) on the sliding rods (702) outside the seat body, and the second elastic element is a second spring rod (703).
8. The apparatus of claim 7, wherein: the lever driving structure comprises a first toggle block (603) and a second toggle block (705), the tail end of the second toggle block (705) abuts against the side wall of the clamping seat (701), and the head end of the second toggle block (705) extends out of the first toggle block (603) and abuts against the first toggle block (603); the elastic force of the first spring (604) is greater than the elastic force of the second spring (703).
CN202110187924.7A 2021-02-18 2021-02-18 Turning positioning type screen projection device for teaching Active CN112984303B (en)

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CN114414593B (en) * 2022-03-31 2022-06-21 欧普康视科技股份有限公司 Optical lens piece projection detection device

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CN104882031A (en) * 2015-05-04 2015-09-02 山东科技大学 Multifunctional teaching die
CN105372927A (en) * 2015-12-15 2016-03-02 重庆触视科技有限公司 Dustproof 360 degree holographic projection cabinet
CA2959948A1 (en) * 2014-09-03 2016-03-10 Uc Nano Technologies Co., Ltd. Touch blackboard, touch blackboard frame, touch all-in-one machine and combined blackboard
CN209168427U (en) * 2018-07-04 2019-07-26 福建一点通信息咨询有限公司 A kind of Multifunctional teaching projector

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CA2959948A1 (en) * 2014-09-03 2016-03-10 Uc Nano Technologies Co., Ltd. Touch blackboard, touch blackboard frame, touch all-in-one machine and combined blackboard
CN104882031A (en) * 2015-05-04 2015-09-02 山东科技大学 Multifunctional teaching die
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