CN114431607B - Teaching platform with hidden projector - Google Patents
Teaching platform with hidden projector Download PDFInfo
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- CN114431607B CN114431607B CN202210084186.8A CN202210084186A CN114431607B CN 114431607 B CN114431607 B CN 114431607B CN 202210084186 A CN202210084186 A CN 202210084186A CN 114431607 B CN114431607 B CN 114431607B
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- projector
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- teaching
- assembly
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- 238000007789 sealing Methods 0.000 claims description 24
- 241001310793 Podium Species 0.000 claims description 23
- 230000002146 bilateral effect Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 8
- 244000309464 bull Species 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 239000000523 sample Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B19/00—Reading-desks; Lecterns; Pulpits, i.e. free-standing
- A47B19/10—Reading-desks; Lecterns; Pulpits, i.e. free-standing characterised by association with auxiliary devices, e.g. paper clamps, line indicators
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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
- F16M11/046—Allowing translations adapted to upward-downward translation movement
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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
- F16M11/06—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
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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
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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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
- G03B21/54—Accessories
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manipulator (AREA)
- Toys (AREA)
Abstract
The invention relates to a teaching platform, in particular to a teaching platform with a hidden projector. The invention aims to provide a teaching platform with a hidden projector, which can adjust the angle of the projector. The invention provides a teaching platform with a hidden projector, which comprises a platform, guide rods, first slide rods, first support rods and the like, wherein the guide rods are symmetrically arranged at the lower parts of the front side and the rear side of the inner wall of the platform, the platform is used for placing some teaching tools, the first slide rods are arranged on the inner sides of the guide rods in a sliding mode, and the first support rods are arranged between the tops of the two first slide rods on the same longitudinal side. According to the invention, the groove drum can be driven to rotate forwards and backwards through the forward and reverse rotating turntables, so that the placing rack and the projector can be driven to move up and down to achieve the purpose of adjusting the height of the projector, and then the placing rack and the projector can be driven to rotate through the matching of the straight gear and the toothed block to achieve the purpose of adjusting the angle of the projector.
Description
Technical Field
The invention relates to a teaching platform, in particular to a teaching platform with a hidden projector.
Background
At present, some teachers can use the projector to perform projection auxiliary teaching when teaching and the existing projector is generally installed at the top of the wall, so that the maintenance of people is inconvenient.
Patent application CN109043822B, published as 20210209, discloses a teaching platform with a hidden projector, which comprises platform legs and a platform surface, wherein the platform legs are fixed on the bottom surfaces of two sides of the platform surface, the bottom of the platform surface is also provided with a shell through bolts, and the top of the platform surface is respectively provided with a projection hole and a screen hole which are communicated with the inner cavity of the shell; when the elliptical plate rotates to the longest of vertical direction, the projection board will use the hinge to upwards rotate as the center, at this moment, will open the recess of upper cover plate, when the elliptical plate rotates to the longest of horizontal direction, the projection board will be closed with the recess of upper cover plate at this moment, reach and open and close projection probe through such a mode, projection probe will be towards the projection cloth on the blackboard, just in time with picture projection to projection cloth on, the teacher can operate the projected picture at the screen of screen board, the upper cover plate rises out when needing the projection, the screen board rotates out and comes at this moment and just can carry out the projection when the probe comes out, upper cover plate descends when not needing, the plank is rotatory last, make the mesa level and smooth. Although the projector can be hidden in the platform, the angle of the projector is fixed, and the angle cannot be adjusted.
Therefore, a teaching platform capable of carrying out angle adjustment on the projector and hiding the projector is designed.
Disclosure of Invention
In order to overcome the defect that the angle of the projector cannot be adjusted generally in the existing teaching platform with the hidden projector, the invention aims to provide the teaching platform with the hidden projector, which can adjust the angle of the projector.
The invention is realized by the following technical approaches:
the utility model provides a hide teaching podium of projecting apparatus, including the podium, the guide bar, first slide bar, first bracing piece, the rack, the projecting apparatus, lifting subassembly and rotating assembly, the equal bilateral symmetry in both sides lower part is equipped with the guide bar around the podium inner wall, the podium is used for placing some teaching aids, the inboard equal slidingtype of guide bar is equipped with first slide bar, all be equipped with first bracing piece between two first slide bar tops of vertical homonymy, the rotary type is equipped with the rack between first bracing piece upper portion, the projecting apparatus that is used for supplementary teaching is placed at placing frame top, the inboard lower part of podium is equipped with the lifting subassembly that is used for adjusting the projecting apparatus height, the inboard upper portion of podium is equipped with the rotating assembly who is used for the projecting apparatus angle.
Further, the lifting subassembly is including first rotation axis, the carousel, bevel gear, the second bracing piece, the groove section of thick bamboo, gu fixed ring and second slide bar, the middle rotary type of front side lower part of podium is equipped with first rotation axis, first rotation axis front side is equipped with the carousel, be equipped with the second bracing piece in the middle of the inboard lower part of podium, second bracing piece middle part rotary type is equipped with the groove section of thick bamboo, groove section of thick bamboo lower part all is equipped with bevel gear with first rotation axis rear side, bevel gear intermeshing, be equipped with solid fixed ring between the inboard lower part of first bracing piece, gu the left and right sides of fixed ring inner wall all is equipped with the second slide bar, second slide bar the inner all slides in the groove section of thick bamboo outside.
Further, still including rotating assembly, rotating assembly is still including the straight-teeth gear, the drive wheel, the drive belt, first dead lever, cogged block and shell, the equal rotary type in first bracing piece lower part is equipped with the bull stick, the bull stick inboard all is equipped with the straight-teeth gear, the outside of bull stick all is equipped with the drive wheel with the left and right sides lower part of rack, the quantity of drive wheel is four, all around having the drive belt between two drive wheels of vertical homonymy, the rear side upper portion bilateral symmetry of podium inner wall is equipped with first dead lever, first dead lever front side all is equipped with the cogged block, straight-teeth gear up moves kinetic energy and cogged block meshing, the first bracing piece outside all is equipped with the shell, drive wheel and drive belt all are located adjacent shell inboardly.
Further, still including the clamping unit who is used for pressing from both sides tight projecting apparatus, clamping unit is including connecting block, clamp splice and first spring, and the equal slidingtype in left and right sides upper portion of rack is equipped with the connecting block, and the equal front and back symmetry of connecting block inboard is equipped with the clamp splice, and the clamp splice inboard all contacts with the projecting apparatus, all is equipped with first spring between the clamp splice outside and the rack.
Further, still including being used for avoiding the chalk dust to drop the seal assembly on the projecting apparatus, seal assembly is equipped with the second dead lever including second dead lever, closing plate and torque spring, the upper portion rear side of podium, and the last rotation type of second dead lever is equipped with the closing plate, all is equipped with torque spring between the left and right sides rear portion of closing plate and the podium, and torque spring all winds in the second dead lever outside.
Further, still including being used for the extrusion closing plate to up rotate the ejecting subassembly of opening, ejecting subassembly is equipped with the ejector pin including guide block, ejector pin and second spring, and the inboard upper portion rear side bilateral symmetry of podium is equipped with the guide block, all slidingtype on the guide block, and the bottom of ejector pin all contacts with adjacent first bracing piece, and the ejector pin lower part is all around having the second spring, and the both ends of second spring are connected with guide block and ejector pin respectively.
Further, still including being used for preventing someone from missing the protection component who touches the carousel, protection component is including the fixed block, the second rotation axis, the protecting crust, fixture block and rotatory piece, the front side lower part bilateral symmetry of podium is equipped with the fixed block, the quantity of fixed block is four, equal rotary type is equipped with the second rotation axis between two fixed blocks of vertical homonymy, all be equipped with the protecting crust on the second rotation axis, the protecting crust contacts each other, the protecting crust front side middle part on right side is equipped with the fixture block, left protecting crust front side middle part rotary type is equipped with rotatory piece, the fixture block blocks rotatory piece.
Further, a handle is arranged at the upper part of the front side of the turntable.
Compared with the prior art, the invention has the remarkable improvements that:
1. according to the invention, the groove drum can be driven to rotate forwards and backwards through the forward and reverse rotating turntables, so that the placing rack and the projector can be driven to move up and down to achieve the purpose of adjusting the height of the projector, and then the placing rack and the projector can be driven to rotate through the matching of the straight gear and the toothed block to achieve the purpose of adjusting the angle of the projector.
2. The clamping block can clamp the projector, and the projector is prevented from sliding to the ground when rotating.
3. The sealing plate can block the upper part of the projector, and a large amount of chalk dust is prevented from falling onto the projector.
4. The protective shell can block the front side of the turntable, and the projector is prevented from moving due to the fact that a person touches the turntable by mistake.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of another embodiment of the present invention.
Fig. 3 is a schematic internal perspective view of the present invention.
Fig. 4 is a schematic diagram of a first partial body structure according to the present invention.
Fig. 5 is a schematic diagram of a second partial body structure according to the present invention.
Figure 6 is a schematic of the structure of the lift assembly of the present invention.
FIG. 7 is a schematic view of a rotary assembly of the present invention.
FIG. 8 is a schematic view of another embodiment of the rotating assembly of the present invention.
Fig. 9 is a schematic view of the clamp assembly of the present invention.
FIG. 10 is a schematic view of a portion of the clamp assembly of the present invention.
Fig. 11 is a schematic view of the structure of the sealing assembly of the present invention.
Fig. 12 is a partial structural schematic view of the seal assembly of the present invention.
Fig. 13 is a schematic structural view of the ejection assembly of the present invention.
Fig. 14 is a schematic structural view of the shield assembly of the present invention.
Fig. 15 is a partial structural schematic view of the shield assembly of the present invention.
Part names and serial numbers in the figure: 1_ lectern, 2_ guide bar, 3_ first slide bar, 4_ first support bar, 5_ placing rack, 6_ projector, 7_ lifting assembly, 701_ first rotating shaft, 702_ turntable, 703_ bevel gear, 704_ second support bar, 705_ grooved drum, 706_ fixed ring, 707_ second slide bar, 8_ rotating assembly, 801_ spur gear, 802_ transmission wheel, 803_ transmission belt, 804_ first fixed bar, 805_ toothed block, 806_ housing, 9_ clamping assembly, 901_ connecting block, 902_ clamping block, 903_ first spring, 10_ sealing assembly, 1001_ second fixed bar, 1002_ sealing plate, 1003_ torsion spring, 11_ ejection assembly, 1101_ guide block, 1102_ prop, 1103_ second spring, 12_ protective assembly, 12_ fixed block, 1101_ second rotating shaft, 1203_ protective shell, 1204_ clamping block, 1202_ rotating block, 1205_ rotating block.
Detailed Description
The invention is further explained by combining the drawings in the specification, and the embodiments of the invention are given by combining the drawings in the specification.
Example 1
The utility model provides a hide teaching podium of projecting apparatus, refer to fig. 1-8, including podium 1, guide bar 2, first slide bar 3, first bracing piece 4, rack 5, projecting apparatus 6, lifting subassembly 7 and rotating assembly 8, the equal bilateral symmetry welding in both sides lower part has guide bar 2 around the podium 1 inner wall, the teacher can place some teaching aids at podium 1 top, 2 inboard equal slidingtype of guide bar are equipped with first slide bar 3, all be equipped with first bracing piece 4 between two first slide bar 3 tops around the homonymy, rotary type is equipped with rack 5 between 4 upper portions of first bracing piece, projecting apparatus 6 has been placed at rack 5 top, start projecting apparatus 6, the teacher can utilize projecting apparatus 6 to assist the teaching, the inboard lower part of podium 1 is equipped with lifting subassembly 7, the inboard upper portion of podium 1 is equipped with rotating assembly 8.
Referring to fig. 3 and 6, the lifting assembly 7 includes a first rotating shaft 701, a rotating disc 702, a bevel gear 703, a second supporting bar 704, a grooved drum 705, a fixing ring 706 and a second sliding bar 707, the first rotating shaft 701 is rotatably provided at the middle of the lower portion of the front side of the platform 1, the rotating disc 702 is provided at the front side of the first rotating shaft 701, a handle is provided at the upper portion of the front side of the rotating disc 702, the second supporting bar 704 is welded at the middle of the lower portion of the inner side of the platform 1, the grooved drum 705 is rotatably provided at the middle of the second supporting bar 704, a spiral groove is provided at the outer side of the grooved drum 705, the bevel gear 703 is provided at both the lower portion of the grooved drum 705 and the rear side of the first rotating shaft 701, bevel gears 703 are mutually meshed, a fixing ring 706 is arranged between the lower parts of the inner sides of first supporting rods 4, second sliding rods 707 are arranged on the left and right sides of the inner walls of the fixing rings 706, the inner ends of the second sliding rods 707 are in sliding fit with the spiral grooves on the outer sides of the grooved drums 705, the grooved drums 705 can be driven to rotate in the positive and negative directions by the positive and negative rotation of the rotary disc 702, so that the second sliding rods 707, the fixing ring 706 and the first supporting rods 4 are driven to move up and down, the placing frame 5 and the projector 6 are driven by the first supporting rods 4 to move up and down, and the purpose of adjusting the height of the projector 6 is achieved.
Referring to fig. 3, 7 and 8, the rotating assembly 8 further includes a spur gear 801, transmission wheels 802, a transmission belt 803, a first fixing rod 804, toothed blocks 805 and a shell 806, wherein a rotating rod is rotatably arranged at the lower portion of the first supporting rod 4, the spur gear 801 is welded at the inner side of the rotating rod, the transmission wheels 802 are arranged at the outer side of the rotating rod and the lower portions of the left side and the right side of the placing rack 5, the number of the transmission wheels 802 is four, the transmission belt 803 is wound between the two transmission wheels 802 at the same vertical side, the first fixing rods 804 are symmetrically arranged at the upper portion of the rear side of the inner wall of the platform 1 in a left-right mode, the toothed blocks 805 are arranged at the front side of the first fixing rod 804, the spur gears 801 can be meshed with the toothed blocks 805 when moving upwards, the toothed blocks can drive the spur gears 801 to rotate, so as to drive the placing rack 5 and the projector 6 to rotate, the purpose of adjusting the angle of the projector 6 is achieved, the shell 806 is welded at the outer side of the first supporting rod 4, and the transmission wheels 802 and the transmission belt are located at the inner side of the adjacent shell 806.
When a teacher needs to use the teaching platform 1, teaching tools can be placed at the top of the platform 1 for teaching, when the teacher needs to use the projector 6, the teacher firstly rotates the handle to drive the turntable 702 to rotate to drive the first rotating shaft 701 to rotate, the first rotating shaft 701 can drive the grooved drum 705 to rotate through the bevel gear 703, the grooved drum 705 drives the second sliding rod 707 to move upwards so as to drive the fixing ring 706 to move upwards, the fixing ring 706 drives the first supporting rod 4 to move upwards, the first supporting rod 4 drives the placing rack 5, the rotating rod and the spur gear 801 to move upwards, the placing rack 5 drives the projector 6 to move upwards, when the spur gear 801 is meshed with the toothed block 805, the toothed block 805 drives the spur gear 801 to rotate, the spur gear 801 drives the rotating rod to rotate, the rotating rod can drive the placing rack 5 to rotate through the driving wheel 802 and the driving belt 803, so as to drive the projector 6 to rotate, when the projector 6 rotates to a proper angle, the rotation of the rotary plate 702 is stopped, the projector 6 stops moving and stops rotating, and then a teacher can start the projector 6, so as to utilize the projector 6 to perform projection aided teaching, when the teacher does not need to use the projector 6, the projector 6 is closed, the handle is rotated reversely to drive the rotary plate 702 to rotate reversely and drive the first rotating shaft 701 to rotate reversely, the first rotating shaft 701 can drive the grooved drum 705 to rotate reversely through the bevel gear 703, the grooved drum 705 drives the second sliding rod 707 to move downwards and reset, so as to drive the fixing ring 706 and the first supporting rod 4 to move downwards and reset, the first supporting rod 4 drives the placing rack 5, the rotating rod and the spur gear 801 to move downwards and reset, the placing rack 5 drives the projector 6 to move downwards and reset, the toothed block 805 drives the spur gear 801 to rotate reversely, the spur gear 801 drives the rotating rod to rotate reversely, the rotating rod can drive the placing rack 5 to rotate backwards and reset through the driving wheel 802 and the driving belt 803, therefore, the projector 6 is driven to reversely rotate and reset, when the spur gear 801 is separated from the toothed block 805, the spur gear 801 stops rotating, and when the projector 6 is completely reset, the rotary disc 702 stops reversely rotating.
Example 2
On the basis of embodiment 1, referring to fig. 3, 9 and 10, the portable projector support further comprises a clamping assembly 9, wherein the clamping assembly 9 comprises a connecting block 901, a clamping block 902 and a first spring 903, the connecting block 901 is arranged on the upper portions of the left side and the right side of the placement frame 5 in a sliding mode, the clamping blocks 902 are symmetrically welded on the inner sides of the connecting block 901 in the front-back mode, the inner sides of the clamping blocks 902 are in contact with the projector 6, the projector 6 can be clamped tightly, and the first spring 903 is arranged between the outer sides of the clamping blocks 902 and the placement frame 5.
Initially, first spring 903 is in compression state, clamp splice 902 can press from both sides tight projecting apparatus 6, avoid projecting apparatus 6 to take place the landing when rotating, when people need maintain projecting apparatus 6, can directly take out projecting apparatus 6, make projecting apparatus 6 and clamp splice 902 separate, first spring 903 reconversion, drive clamp splice 902 and connecting block 901 and move to the inboard, after projecting apparatus 6 has been repaired, can put projecting apparatus 6 back to the original position, projecting apparatus 6 can extrude clamp splice 902 and move to the outside and reset, drive connecting block 901 and move to the outside and reset, clamp splice 902 can clip projecting apparatus 6 this moment.
Referring to fig. 1, 2, 3, 11 and 12, the sealing device further comprises a sealing assembly 10, the sealing assembly 10 comprises a second fixing rod 1001, a sealing plate 1002 and a torsion spring 1003, the second fixing rod 1001 is welded to the rear side of the upper portion of the platform 1, the sealing plate 1002 is rotatably arranged on the second fixing rod 1001, the sealing plate 1002 covers the top of the projector 6, chalk dust can be prevented from falling to the top of the projector 6, the torsion springs 1003 are arranged between the rear portions of the left side and the right side of the sealing plate 1002 and the platform 1, and the torsion springs 1003 are wound outside the second fixing rod 1001.
Referring to fig. 3 and 13, the platform further comprises an ejection assembly 11, the ejection assembly 11 comprises guide blocks 1101, ejector rods 1102 and second springs 1103, the guide blocks 1101 are welded on the rear side of the upper portion of the inner side of the platform 1 in a bilateral symmetry manner, the ejector rods 1102 are arranged on the guide blocks 1101 in a sliding manner, the bottoms of the ejector rods 1102 are all in contact with adjacent first supporting rods 4, the ejector rods 1102 move upwards to extrude the sealing plate 1002 to rotate upwards to be opened, the second springs 1103 are wound on the lower portions of the ejector rods 1102, and two ends of each second spring 1103 are connected with the guide blocks 1101 and the ejector rods 1102 respectively.
Initially, sealing plate 1002 blocks the top of projector 6, chalk dust can be avoided dropping to the top of projector 6, when first bracing piece 4 moves upwards, can extrude ejector pin 1102 to move upwards, second spring 1103 is compressed, ejector pin 1102 can extrude sealing plate 1002 to rotate upwards and open, torsion spring 1003 deforms, make sealing plate 1002 no longer block the top of projector 6, projector 6 can move upwards, then the teacher can utilize projector 6 to carry out projection assistance teaching, when first bracing piece 4 moves downwards and resets, projector 6 can move downwards and reset, and simultaneously, first bracing piece 4 separates from ejector pin 1102, second spring 1103 restores to the original state, drive ejector pin 1102 to move downwards and reset, make ejector pin 1102 separate from sealing plate 1002, torsion spring 1003 restores to the original state, drive sealing plate 1002 to rotate downwards and close, make sealing plate 1002 block the top of projector 6 again.
Referring to fig. 1, fig. 3, fig. 14 and fig. 15, the teaching platform further includes a protection assembly 12, the protection assembly 12 includes fixed blocks 1201, second rotating shafts 1202, protection shells 1203, fixture blocks 1204 and rotating blocks 1205, the fixed blocks 1201 are welded on the lower left and right sides of the front side of the teaching platform 1, the number of the fixed blocks 1201 is four, the second rotating shafts 1202 are arranged between the two fixed blocks 1201 on the same vertical side in a rotating mode, the protection shells 1203 are welded on the second rotating shafts 1202, the protection shells 1203 are in contact with each other, the front sides of the rotation disks 702 can be covered by the protection shells 1203, the rotation disks 702 are prevented from being touched by people by mistake, the fixture blocks 1204 are arranged in the middle of the front sides of the protection shells 1203 on the right side, the rotating blocks 1205 are arranged in the middle of the front sides of the protection shells 1203 on the left side in a rotating mode, and the fixture blocks 1205 are clamped by the fixture blocks 1204.
When people need rotate carousel 702, at first with rotatory piece 1205 forward rotation, make rotatory piece 1205 and fixture block 1204 separate, then open protection shell 1203 forward rotation, make protection shell 1203 no longer cover carousel 702, then people can rotate carousel 702, make projecting apparatus 6 can up-motion, then the teacher can utilize projecting apparatus 6 to carry out projection auxiliary teaching, the teaching is accomplished the back, reverse rotation carousel 702, can make projecting apparatus 6 down-motion reset, then turn the protection shell 1203 backward and close, at last with rotatory piece 1205 backward rotation reset, make fixture block 1204 block rotatory piece 1205, protection shell 1203 covers carousel 702 this moment, can avoid someone mistake to touch carousel 702.
Finally, it is necessary to state that: the above-mentioned contents are only used to help understanding the technical solution of the present invention, and should not be interpreted as limiting the scope of the present invention; insubstantial modifications and adaptations of the invention as described above will occur to those skilled in the art and are intended to be within the scope of the invention as claimed.
Claims (6)
1. A teaching platform with a hidden projector comprises a platform (1), guide rods (2), first slide rods (3), first support rods (4), a placing frame (5) and a projector (6), wherein the guide rods (2) are symmetrically arranged on the lower portions of the front side and the rear side of the inner wall of the platform (1), the platform (1) is used for placing some teaching tools, the first slide rods (3) are arranged on the inner sides of the guide rods (2) in a sliding mode, the first support rods (4) are arranged between the tops of the two first slide rods (3) on the same longitudinal side, the placing frame (5) is arranged between the upper portions of the first support rods (4) in a rotating mode, the projector (6) used for assisting teaching is placed on the top of the placing frame (5), and the teaching platform is characterized by further comprising a lifting assembly (7) and a rotating assembly (8), the lifting assembly (7) used for adjusting the height of the projector (6) is arranged on the lower portion of the inner side of the platform (1), and the rotating assembly (8) used for adjusting the angle of the projector (6) is arranged on the upper portion of the inner side of the platform (1);
the lifting assembly (7) comprises a first rotating shaft (701), a rotating disc (702), bevel gears (703), a second supporting rod (704), a grooved drum (705), a fixing ring (706) and second sliding rods (707), the first rotating shaft (701) is rotatably arranged in the middle of the lower portion of the front side of the platform (1), the rotating disc (702) is arranged on the front side of the first rotating shaft (701), the second supporting rod (704) is arranged in the middle of the lower portion of the inner side of the platform (1), the grooved drum (705) is rotatably arranged in the middle of the second supporting rod (704), the bevel gears (703) are respectively arranged on the lower portion of the grooved drum (705) and the rear side of the first rotating shaft (701), the bevel gears (703) are mutually meshed, the fixing ring (706) is arranged between the lower portions of the inner sides of the first supporting rod (4), the second sliding rods (707) are respectively arranged on the left side and the right side of the inner wall of the fixing ring (706), and the inner ends of the second sliding rods (707) slide outside the grooved drum (705);
still including rotating assembly (8), rotating assembly (8) are still including straight-teeth gear (801), drive wheel (802), drive belt (803), first dead lever (804), cogs (805) and shell (806), first bracing piece (4) lower part equal rotary type is equipped with the bull stick, the bull stick inboard all is equipped with straight-teeth gear (801), the outside of bull stick and the left and right sides lower part of rack (5) all are equipped with drive wheel (802), the quantity of drive wheel (802) is four, all around having drive belt (803) between two drive wheels (802) of vertical homonymy, the rear side upper portion bilateral symmetry of podium (1) inner wall is equipped with first dead lever (804), first dead lever (804) front side all is equipped with cogs (805), straight-teeth gear (801) up move kinetic energy and cogs (805) meshing, first bracing piece (4) outside all is equipped with shell (806), drive wheel (802) and drive belt (803) all are located adjacent shell (806) inboardly.
2. The teaching podium of hidden projecting apparatus of claim 1, characterized by further comprising a clamping assembly (9) for clamping the projecting apparatus (6), wherein the clamping assembly (9) comprises a connecting block (901), a clamping block (902) and a first spring (903), the connecting block (901) is slidably arranged on the upper portion of the left side and the upper portion of the right side of the placing frame (5), the clamping blocks (902) are symmetrically arranged on the inner sides of the connecting block (901) in the front-back direction, the inner sides of the clamping blocks (902) are in contact with the projecting apparatus (6), and the first spring (903) is arranged between the outer sides of the clamping blocks (902) and the placing frame (5).
3. The teaching platform of the hidden projector as claimed in claim 2, further comprising a sealing assembly (10) for preventing chalk dust from falling onto the projector (6), wherein the sealing assembly (10) comprises a second fixing rod (1001), a sealing plate (1002) and a torsion spring (1003), the second fixing rod (1001) is arranged on the rear side of the upper portion of the platform (1), the sealing plate (1002) is rotatably arranged on the second fixing rod (1001), the torsion spring (1003) is arranged between the rear portions of the left side and the right side of the sealing plate (1002) and the platform (1), and the torsion spring (1003) is wound on the outer side of the second fixing rod (1001).
4. The teaching platform of the hidden projector as claimed in claim 3, further comprising an ejection assembly (11) for pressing the sealing plate (1002) to rotate upwards for opening, wherein the ejection assembly (11) comprises a guide block (1101), a top bar (1102) and a second spring (1103), the guide block (1101) is arranged on the upper rear side of the inner side of the platform (1) in a bilateral symmetry manner, the top bars (1102) are arranged on the guide block (1101) in a sliding manner, the bottoms of the top bars (1102) are contacted with adjacent first supporting rods (4), the second spring (1103) is wound on the lower portion of the top bar (1102), and two ends of the second spring (1103) are respectively connected with the guide block (1101) and the top bar (1102).
5. The teaching podium of claim 4, characterized by further comprising a protection component (12) for preventing a person from mistakenly touching the turntable (702), wherein the protection component (12) comprises fixed blocks (1201), a second rotating shaft (1202), a protective shell (1203), a clamping block (1204) and a rotating block (1205), the fixed blocks (1201) are arranged on the lower portion of the front side of the podium (1) in a bilateral symmetry manner, the number of the fixed blocks (1201) is four, the second rotating shaft (1202) is arranged between the two fixed blocks (1201) on the same vertical side in a rotating manner, protective shells (1203) are arranged on the second rotating shafts (1202), the protective shells (1203) are in mutual contact, the clamping block (1204) is arranged in the middle portion of the front side of the protective shell (1203) on the right side, the rotating block (1205) is arranged in the middle portion of the front side of the protective shell (1203) on the left side in a rotating manner, and the rotating block (1205) is clamped by the clamping block (1204).
6. A hidden projector teaching lectern according to claim 5 wherein the turntable (702) is provided with a handle at the upper front.
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| CN202210084186.8A CN114431607B (en) | 2022-01-25 | 2022-01-25 | Teaching platform with hidden projector |
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| CN114431607A (en) | 2022-05-06 |
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