CN108766048A - Classroom instruction auxiliary device - Google Patents
Classroom instruction auxiliary device Download PDFInfo
- Publication number
- CN108766048A CN108766048A CN201810622404.2A CN201810622404A CN108766048A CN 108766048 A CN108766048 A CN 108766048A CN 201810622404 A CN201810622404 A CN 201810622404A CN 108766048 A CN108766048 A CN 108766048A
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- China
- Prior art keywords
- sacculus
- display unit
- foot pad
- auxiliary device
- platform
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000003384 imaging method Methods 0.000 claims abstract description 11
- 230000005389 magnetism Effects 0.000 claims description 3
- 239000002775 capsule Substances 0.000 abstract description 11
- 230000001846 repelling effect Effects 0.000 abstract description 2
- 229920001971 elastomer Polymers 0.000 description 10
- 241001633942 Dais Species 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000000806 elastomer Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- G03B21/56—Projection screens
- G03B21/562—Screens moving during projection
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
- H01H3/141—Cushion or mat switches
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Toys (AREA)
Abstract
The present patent application discloses classroom instruction auxiliary device, is related to teaching equipment field, includes the display unit for projection imaging；The display unit is slidably connected on platform；Foot pad is equipped on the surface of platform, the foot pad includes multiple equally distributed pedal units；Each pedal unit includes an air bag for being used for that display unit is driven to move and a hydraulic bag that clear water is housed；All hydraulic capsule in foot pad communicates with each other；The side of foot pad is equipped with the outlet pipe being connected to a certain hydraulic bag；The air bag includes the first sacculus and the second sacculus of face setting, and the first sacculus and the second sacculus communicate with each other；Be equipped in first sacculus electromagnet group for being used for repelling magnet piece and with the concatenated contact-making switch of electromagnet group；The air stream drives that the contact-making switch is entered the first sacculus by the second sacculus are opened.The application can avoid projection imaging fuzzy.
Description
Technical field
The present invention relates to teaching equipment fields, and in particular to a kind of classroom instruction auxiliary device.
Background technology
In classroom teaching, in order to understand content that teacher is taught with making student's more visual pattern, use is generally required
To the auxiliary devices such as projecting apparatus and curtain.Teacher before gets out the PPT coursewares that both pictures and texts are excellent at school, then at school when throw
The mode that shadow instrument projects on curtain is explained.Student can not only be made more to be understood quickly and receive teacher in this way
The content of professor also saves teacher and writes on classroom time of picture, effectively increases efficiency of attending class.
However, the position of present projecting apparatus and curtain is fixed, and most of teachers are habitually on platform
It walks about, this just inevitably causes to block curtain, makes the PPT contents projected on projecting apparatus that can not project curtain
On, keep projection imaging fuzzy, makes all students that can not all watch project content, adversely affected to teaching.
Invention content
The invention is intended to provide a kind of classroom instruction auxiliary device for avoiding projection imaging fuzzy.
To achieve the above objectives, following scheme is provided：
Scheme one：Classroom instruction auxiliary device includes the display unit for projection imaging；The display unit sliding connects
It is connected on platform；Foot pad is equipped on the surface of platform, the foot pad includes multiple equally distributed pedal units；Each trample
Unit includes an air bag for being used for that display unit is driven to move and a hydraulic bag that clear water is housed；All liquid in foot pad
Pressure capsule communicates with each other；The side of foot pad is equipped with the outlet pipe being connected to a certain hydraulic bag；The air bag includes what face was arranged
First sacculus and the second sacculus, the first sacculus and the second sacculus communicate with each other；First sacculus is close to the display unit, institute
The second sacculus is stated far from the display unit；The display unit includes magnet piece；It is equipped in first sacculus and is used for repelling
The electromagnet group of magnet piece and with the concatenated contact-making switch of electromagnet group；The contact-making switch enters the first ball by the second sacculus
The air stream drives of capsule are opened.
Explanation of nouns：
Platform：Refer to the place stood for teacher on dais.
Face：First sacculus and the second sacculus present position are located on same linear position, stand in the second balloon location
The first sacculus can be blocked.
The advantages of this programme, is：
Foot pad is laid on the surface of platform, makes teacher during walking about, and inevitably tramples foot pad, and then make
Equally distributed certain pedal units are trampled on foot pad.The pedal unit trampled by these can be precisely located old
The position of Shi Suozhan, and then the air stream drives contact-making switch opening for entering the first sacculus by the second sacculus is formed by trampling, make
Repulsive force is generated between magnet piece in the energization of electromagnet group and display unit, display unit is made to be open.Again because of the first ball
The position face of capsule and the second sacculus pushes display single when trampling the second sacculus by the first sacculus of face therewith
Member is mobile, this makes the position that teacher is stood not shelter from display unit, and so that teacher is freely walked on platform will not hide
Keep off display unit, and display unit itself projection imaging is in one, therefore do not interfere with display unit clearly projection imaging.
In addition, pedal unit, when being trampled, the clear water in hydraulic bag can be extruded, eventually by outlet pipe
Outflow, it is convenient that the clear water of outflow is used.And clear water is housed in hydraulic bag, foot pad itself can be made more refrigerant, can be given
Teacher, which attends class, provides a refrigerant environment.
This programme efficiently solves teacher and walks about on platform and influence projection imaging, causes projection imaging is fuzzy to ask
Topic.
Scheme two：Further, the display unit includes the slide plate being slidably connected on platform and is arranged on slide plate
Curtain and projecting apparatus.
By slide plate, display unit is enable to be slided on platform, while installation is provided to the installation of curtain and projecting apparatus
Platform.Curtain and projecting apparatus are formed into an entirety, moves synchronously, teacher is avoided from source and appears in projecting apparatus and curtain
Between, cause the situation that projection imaging is fuzzy.
Scheme three：Further, magnet piece there are two the display units, and on two display units it is close to each other one
Face magnetism is identical.
Magnetic identical mutually exclusive, this makes two display units can not possibly closely, there are two display unit, this
So that teacher either stand where, will not all cause the sight to certain position classmates to block, total that there are one displays is single
Member can be seen by it, efficiently solve occlusion issue.
Scheme four：Further, the magnet piece of each display unit includes at least two, and two magnet pieces are separately mounted to
The both ends that slide plate extends along glide direction.
At both ends, where teacher no matter to stand can make electromagnet group in the first sacculus if being made for magnet piece setting
The repulsive force generated between magnet piece can push slide plate.
Scheme five：Further, there is the outlet pipe water outlet, the water outlet to be fixed on the top of lectern, it is described go out
The cup for water receiving is provided with below the mouth of a river.
Lectern：Refer to and be placed on dais in front of platform, the place of books and other items is placed for teacher.
By the clear water loaded in hydraulic bag, teacher is made some clear water can be made to enter outlet pipe when trampling every time
In, because outlet pipe reaches the top at dais, there is differences in height for outlet pipe itself, only after outlet pipe is filled, water outlet
Clear water in pipe can just be fallen in the cup of outlet pipe outlet lower section.Therefore, it is walked about repeatedly to certain on platform as teacher
After time, clear water starts to enter in cup from outlet pipe, and after teacher's trampling repeatedly for a period of time, clear water can fill up
Cup, this when, teacher was drunk water just because the teaching of a period of time will produce thirsty feeling by cup.Pass through
The structure of hydraulic bag, outlet pipe and cup has not only acted as the effect of automatic pouring, also acts timing, teacher is reminded to drink water
Effect, entire step is smooth, has not only interfered with the normal teaching of teacher, but also store Qing Dynasty's water automatically for teacher.
Scheme six：Further, the hydraulic bag is arranged between two adjacent the second sacculus, connects on each hydraulic bag
It is connected with the screen pipe for crossing drainage.
All hydraulic capsule is connected to by screen pipe, and screen pipe bypasses the second sacculus of air bag so that although hydraulic bag is spaced
It is arranged between two the second air bags, is still to connect into an entirety still.So that teacher is in the mobile mistake that walks back and forth
Hydraulic bag is trampled in journey, the water in hydraulic bag is made to enter in outlet pipe, during entering outlet pipe, passes through screen pipe mistake
Filtering water.
Description of the drawings
Fig. 1 is the structural schematic diagram of classroom instruction auxiliary device embodiment 1 of the present invention.
Fig. 2 is the structural schematic diagram of air bag in Fig. 1.
Fig. 3 is the connection diagram of the first sacculus and connecting tube in Fig. 2.
Fig. 4 is the structural schematic diagram of classroom instruction auxiliary device embodiment 2 of the present invention.
Fig. 5 is the structural schematic diagram of air bag in Fig. 4.
Specific implementation mode
Below by the further details of explanation of specific implementation mode：
Reference numeral in Figure of description includes：Platform 1, lectern 2, curtain 3, projecting apparatus 4, sliding rail 5, air bag 6, hydraulic pressure
Capsule 7, outlet pipe 8, cup 9, screen pipe 10, semi-permeable membrane 11, check valve 12, magnet piece 13, slide plate 14, the first sacculus 15, second
Sacculus 16, circuit board 17, contact-making switch 18, elastomer block 19, connecting tube 20, catch 21, spring 22, support bar 23, foot pad 29, every
Film 31, tracheae 32, support base 33, the first cylinder 34, the second cylinder 35, the first air cavity 36, the second air cavity 37.
Embodiment 1
Embodiment is substantially as shown in Fig. 1, classroom instruction auxiliary device, including the sliding rail 5 being arranged on platform 1, described
Be slidably connected two groups of display units on sliding rail 5, and every group of display unit includes a slide plate 14 slided along sliding rail 5, sliding
It is mounted with curtain 3 on plate 14 and the projecting apparatus 4 in 3 front of curtain and the magnet piece 13 on slide plate 14 are set；Projection
Instrument 4 is mounted on the bottom position of curtain 3, will not shelter from the sight of student.
The bottom end of sliding rail 5, the foot pad being made of together air bag 6 and hydraulic bag 7 and rubber slab on 1 upper berth of entire platform
29.Entire foot pad 29 is as shown in Figure 1, form that equally distributed pedal unit, pedal unit extend always out of sliding rail 5 one by one
Onto the platform 1 outside sliding rail 5.When teacher tramples some pedal unit, the air bag 6 in pedal unit can be made to be squeezed
Pressure makes first sacculus 15 inflation between sliding rail 5 become protrusion, and the first raised sacculus 15 squeezes is in this position originally
Slide plate 14 makes slide plate 14 drive two sidesways of the curtain 3 and projecting apparatus 4 that are disposed thereon along sliding rail 5 to first sacculus 15
It opens.
The structure of specific pedal unit, as shown in Fig. 2, air bag 6 includes first ball being arranged in 5 track of sliding rail
Capsule 15 and second sacculus 16 being arranged between sliding rail 5 and dais, pass through between the first sacculus 15 and the second sacculus 16
Connecting tube 20 is connected to.Hydraulic bag 7 and the first sacculus 15 and the second sacculus 16 are all made of rubber material, and connecting tube 20 uses
Metal material is made, and the connecting tube 20 is mounted on the lower section of sliding rail 5, for supporting sliding rail 5.Connecting tube 20 has only served transmission
The effect of gas, the expansion and contraction of air bag 6 mainly realize that connecting tube 20 is rigid structure, sliding rail 5 by the first sacculus 15
It is arranged in connecting tube 20, had both ensure that the stability of the sliding rail 5 in 6 change procedure of air bag in this way, and in turn ensured in sliding rail 5
First sacculus 15 can extrusion expansion form protrusion to push display unit to move.
Two air bags 6 closely bond the hydraulic bag 7 for filling clear water, institute between being located at first sacculus 15 in 5 outside of sliding rail
There is hydraulic bag 7 to be respectively connected with screen pipe 10, all hydraulic capsule 7 is communicated with each other by screen pipe 10.Positioned at 29 left side of foot pad
Hydraulic bag 7 is connected with the outlet pipe 8 for reaching 2 top of lectern by screen pipe 10.In order to ensure that all screen pipes 10 can be timely
It will be transmitted in outlet pipe 8 from the water squeezed out in hydraulic bag 7, be threadedly coupled and all filterings between all hydraulic capsule 7
The collecting pipe that pipe 10 is connected to, then being also that collecting pipe is directly connected to outlet pipe 8 in left side, in outlet pipe 8 close to collecting pipe
Position is installed by check valve 12.By check valve 12, water is made to can only enter in outlet pipe 8, water is avoided to be flow backwards from outlet pipe 8.
For convenience, water inlet pipe 8 and screw thread for pouring water into hydraulic bag 7 are communicated on the right side of foot pad 29 to connect
It is connected on water inlet.
Outlet pipe 8 is drawn to above dais, the holder on dais is connected by screw and fixes outlet pipe 8 and water outlet
The water outlet of pipe 8, while glass holder is socketed on holder, glass holder is located at the lower section of 8 water outlet of outlet pipe, is connected in glass holder
For from the cup 9 of 8 water outlet water receiving of outlet pipe.
All hydraulic capsule 7 is connected by screen pipe 10, and screen pipe 10 bypasses the first sacculus 15 of air bag 6 so that hydraulic bag 7
Although being arranged at intervals between two air bags 6, it is still to connect into an entirety.The position that hydraulic bag 7 is arranged is sliding
5 outside of rail is easy the position trampled by people so that teacher tramples hydraulic bag 7 during walking back and forth mobile, makes hydraulic bag 7
In water enter in outlet pipe 8.
The junction of screen pipe 10 and hydraulic bag 7 is located at the top of hydraulic bag 7.Because of gravity, usually in hydraulic bag 7
Water be difficult to enter into screen pipe 10, could only enter when hydraulic bag 7 is extruded.
The semi-permeable membrane 11 for blocking screen pipe 10 is radially connected in screen pipe 10.It to be entered down by a screen pipe 10
One screen pipe 10, it is necessary to which, by the semi-permeable membrane 11 in the screen pipe 10, semi-permeable membrane 11 is a kind of water filtering of technology maturation
Product passes through the filtering of multiple screen pipes 10 in this way, and it is filter out impurity pure to enter eventually into the clear water in outlet pipe 8
Water is more suitable for teacher and is drunk after teaching has been tired out.
As shown in Figures 2 and 3, in order to make teacher station at a certain position, display unit can be removed more rapidly, keep away
Exempt to be blocked by teacher, PCB circuit board 17 is installed in the first sacculus 15；The circuit board 17 be equipped with electromagnet group and with
The concatenated contact-making switch of electromagnet group 18.Electromagnet group use two electromagnet being oppositely arranged, make two electromagnet respectively with
Magnet piece 13 on two slide plates 14 of 15 both sides of the first sacculus one side magnetism all same close to each other, in this way in electromagnet
When group is powered, the magnetic force that electromagnet group generates in the first sacculus 15 can push two adjacent slide plates 14 open to both sides, into
And the display unit being arranged on the two slide plates 14 is made to be open.
Inflation is equipped in first sacculus 15 can press the elastomer block 19 of contact-making switch 18；The second of all air bags 6
16 joint forming of sacculus is at the foot pad 29 for covering 1 surface of platform；The elastomer block 19 is positioned close on the position of connecting tube 20,
The circuit board 17 is arranged in the relative position of elastomer block 19.When air-flow enters the first air bag 6 by connecting tube 20
It waits, first impact elasticity block 19, then air-flow, which just enters the first air bag 6, keeps the first air bag 6 raised.
Elastomer block 19 includes catch 21 for blocking connecting tube 20 and is connected between connecting tube 20 and catch 21
Four springs 22.
Catch 21 blocks connecting tube 20, enables to enter the air-flow of the first air bag 6 all by connecting tube 20 for making
With on catch 21, making catch 21 be moved to the direction far from connecting tube 20, for pressing the contact-making switch 18 on circuit board 17.
Spring 22 is tension spring, when not having air-flow to enter, is used for tensing catch 21 in connecting tube 20.
In connecting tube 20 close to the end of the first sacculus 15, integrally formed with four support bars for putting in the first sacculus 15
23, end and the circuit board 17 of support bar 23 weld.Ensure that the position of circuit board 17 is fixed by support bar 23, catch 21 is made to exist
The contact-making switch 18 on circuit board 17 can be touched when flicking.
The inside of four support bars 23 is provided with sliding slot, and four angles of catch 21 are slidably connected in each sliding slot, four branch
Stay 23 play the guiding role to catch 21, the direction for enabling catch 21 to extend along support bar 23 when being pushed by air-flow
It moves forward, makes catch 21 when sliding, contact-making switch 18 can be touched like clockwork.
All second sacculus 16 and hydraulic bag 7 together form the foot pad 29 of covering platform 1, make teacher in 1 uplink of platform
Movement is walked, the second sacculus 16 and hydraulic bag 7 will be inevitably squeezed.And when the second sacculus 16 is extruded, air-flow
It is flowed to first sacculus 15 of the one end of air bag 6 far from people's foot by connecting tube 20.During flowing, air-flow, which pushes, to be blocked
The firmly catch 21 of connecting tube 20, catch 21 are arranged until catch 21 is hit in catch 21 along four 23 forward slips of support bar
Catch 21 stops continuing forward slip after the circuit board 17 that front is oppositely arranged, and catch 21 passes through when hitting circuit board 17
Impact force press be welded on circuit board 17 and with the contact-making switch 18 of 21 face of catch, make contact-making switch 18 be closed, electromagnet
Group energizing magnetic is identical as two magnet pieces 13, generates repulsive force, at the same time, because catch 21 leaves connecting tube 20,
Make air-flow lose blocking to enter in the first air bag 6, so that the first air bag 6 is raised up and push the slide plate 14 of both sides open, make two
Be spaced between slide plate 14, then by electromagnet group respectively with the magnetic that is generated between the magnet piece 13 inlayed on two slide plates 14
Two slide plates 14 are pushed away farther by power, make teacher after trampling some air bag 6, with the air bag 6 be line of demarcation by both sides or
Unilateral display unit is pushed open, so that the position that display unit and teacher are stood is staggered, teacher is avoided to shelter from display unit.Make
Life can clearly be learnt by projection of the projecting apparatus 4 on curtain 3, be also convenient for teacher using curtain 3 and projecting apparatus 4 into
Row teaching displaying.
Magnet piece 13 on each slide plate 14 at least there are two, be embedded in slide plate 14 respectively along 5 length direction of sliding rail
Both ends.If teacher just stands in the side of two display units, this when, the first sacculus 15 was exactly unilateral to push display
Unit is to far from the station location movement of teacher institute.
First sacculus, 15 protrusion, i.e., air bag 6 is in the bottom end of sliding rail 5 protrusion, in the extruding rear gasbag 6 by sliding rail 5 in cunning
Higher protrusion is formed in rail 5, can squeeze the display unit on this position, it is made to be moved to side.Therefore, work as teacher
When trampling some air bag 6, air bag 6 can push display unit open, and the position that display unit and teacher are stood is made to be staggered,
Teacher is avoided to shelter from display unit.Student is set clearly to learn by projection of the projecting apparatus 4 on curtain 3,
Teacher is facilitated to carry out teaching demonstration using curtain 3 and projecting apparatus 4.
In addition, projecting apparatus 4 and curtain 3 are synchronized movement as a display unit, when can ensure that projecting apparatus 4 is per
Often carve on image projecting to curtain 3, will can avoid like clockwork because relative motion between projecting apparatus 4 and curtain 3 and
The situation for causing projection unclear.
By the clear water loaded in hydraulic bag 7, teacher is made some clear water can be made to enter outlet pipe 8 when trampling every time
In, because outlet pipe 8 reaches the top at dais, there is differences in height for outlet pipe 8 itself, only after outlet pipe 8 is filled, go out
Clear water in water pipe 8 can just be fallen in the cup 9 of the outlet of outlet pipe 8 lower section.Therefore, walk about repeatedly on platform 1 as teacher to
After regular hour, clear water starts to enter in cup 9 from outlet pipe 8, after teacher's trampling repeatedly for a period of time, clearly
Water can fill up cup 9, this when, teacher was just because the teaching of a period of time will produce thirsty feeling, by cup 9 into
Row drinks water.By the structure of hydraulic bag 7, outlet pipe 8 and cup 9, the effect of automatic pouring has been not only acted as, has also acted meter
When, remind the effect drunk water of teacher, entire step is smooth, has not only interfered with the normal teaching of teacher, but also stored automatically for teacher
Qing Dynasty's water.
Embodiment 2
As different from Example 1, projecting apparatus 4 is not installed together with curtain 3.
Specifically, as shown in Figure 4 and Figure 5, the bottom end screw of projecting apparatus 4 is connected with support base 33, the bottom end of support base 33
By pin-hinges on lectern 2, not only facilitate installation settings, but also does not influence support base 33 and projecting apparatus 4 is driven to deflect.Support base 33
Can be arranged can also be arranged on platform 1 on lectern 2, be arranged on lectern 2 and can be avoided to avoid 1 position of platform is occupied
Teacher is influenced to walk about in platform 1.The intermediate of support base 33 is integrally formed rectangular block there are one connections, and the both sides of rectangular block are pacified respectively
Equipped with the first cylinder 34 and the second cylinder 35, first cylinder 34 in left side and second cylinder 35 on right side are hollow by one respectively
Mounting base be connected on lectern 2.The piston rod of first cylinder 34 and the second cylinder 35 is abutted with the rectangular block of support base 33, energy
Enough push support base 33 that projecting apparatus 4 is driven to deflect.
The diaphragm 31 for separating the second sacculus 16 is equipped in second sacculus 16；Diaphragm 31 and the second sacculus 16, the first ball
Capsule 15 equally uses rubber material.First sacculus 15 is located at the junction of platform 1 and 1 wall of platform；Second sacculus
16 one end far from the first sacculus 15 are communicated with tracheae 32.
The projecting apparatus 4 is arranged on the position of center line A of the length direction in platform 1 and lectern 2.Platform 1 and lectern 2 are grown
The center line A for spending direction is overlapped, and curtain 3 and projecting apparatus 4 are all disposed on this midline position, illustrates projecting apparatus 4 with curtain 3 just
It is right, while illustrating 1 area equation of platform positioned at 4 both sides of projecting apparatus.That is projecting apparatus 4 and curtain 3 is arranged in entire dais
Between on position, not only seem beautiful in this way, but also 4 both sides of projecting apparatus have the air bag 6 of identical quantity so that the first cylinder
34 and second cylinder 35 can provide identical thrust to support base 33, so that teacher is stood the position symmetrical in 4 both sides of projecting apparatus
When upper, the inflection point of projecting apparatus 4 is also symmetrical.
Second sacculus 16 is separated into the first air cavity 36 being connected to the first sacculus 15 and is connected to tracheae 32 by diaphragm 31
The second air cavity 37；The volume of each second air cavity 37 is gradually successively decreased away from projecting apparatus 4, i.e., away from center line A's
Direction decreasing volumes.
When second air cavity 37 is remoter from 4 position of projecting apparatus, when teacher stands in the position of the 37 place air bag 6 of the second air cavity
It is remoter apart from projecting apparatus 4 when upper, can not possibly more projecting apparatus 4 be blocked, therefore get over further away from 37 volume of the second air cavity of projecting apparatus 4
Small, for the gas flow that can be accommodated with regard to smaller, the air-flow into cylinder is smaller, and the power that cylinder pushes support base 33 to deflect is made to get over
It is small, keep the direction that support base 33 and projecting apparatus 4 deflect smaller.And in second air cavity 37 position closer apart from projecting apparatus 4
Closer apart from projecting apparatus 4, teacher station may more block projecting apparatus 4 when on corresponding position, therefore the volume of the second air cavity 37 is got over
Greatly, bigger air-flow can be generated, make cylinder generate it is bigger push dynamic support base 33, so that projecting apparatus 4 is deflected bigger, Neng Gouyou
Effect avoids blocking for teacher.
Along 4 liang of side directions of projecting apparatus, each air bag 6 successively decreases to the deflection driven effect of projecting apparatus 4, makes through the second gas
The size of 37 volume of chamber is arranged, to adjust the adjusting of 4 deflection angle of projecting apparatus on different location.
Two are symmetrical arranged along 4 position of projecting apparatus, i.e., along symmetrically arranged second sacculus of center line A 16, the
The volume of two air cavitys 37 is equal.
Conveniently on 4 monosymmetric position of projecting apparatus, make air bag 6 that there is same strength projecting apparatus 4 to be pushed to carry out symmetrically
The deflection of angle.
In projecting apparatus 4, i.e., the tracheae 32 of all second sacculus 16 on the left of center line location A connection with the same snorkel
32 connections, the snorkel 32 run through lectern 2 from the bottom of lectern 2, are then passed through hollow mounting base and are connected to the first cylinder 34.?
The tracheae 32 of projecting apparatus 4, i.e., all second sacculus 16 connection on the right side of center line location A is connected to the same snorkel 32, should
Snorkel 32 runs through lectern 2 from the bottom of lectern 2, is then passed through hollow mounting base and is connected to the second cylinder 35.
Because being provided with diaphragm 31 in the second sacculus 16 so that the second sacculus 16 when being trampled gas respectively from two
End enters in the first sacculus 15 and tracheae 32.The gas entered in the first sacculus 15 is formed during being trampled extruding
Air-flow makes elastomer block 19 be pushed by air-flow, so that elastomer block 19 is pressed the contact-making switch 18 on circuit board 17, contact-making switch 18 is made to close
It closes, making to be powered with 18 concatenated electromagnet group of contact-making switch pushes curtain 3 to be moved to the position stood far from teacher.
And the air-flow entered in tracheae 32 can specifically stand according to teacher in the which side of projecting apparatus 4, towards with teacher
Cylinder in homonymy is ventilated, and the piston rod of cylinder is made to push support base 33 inclined away from the direction of teacher standing place
Turn.I.e. teacher station can be deflected in position, projecting apparatus 4 towards the negative direction of this position, avoid teacher station in curtain 3 and projecting apparatus
Between 4, projecting apparatus 4 is sheltered from.Movement is led to one in two curtains 3 in 4 federation of projecting apparatus, can will be in projecting apparatus 4
Image projects on curtain 3.
Above-described is only the embodiment of the present invention, and the common sense such as well known concrete structure and characteristic are not made herein in scheme
Excessive description, technical field that the present invention belongs to is all before one skilled in the art know the applying date or priority date
Ordinary technical knowledge can know the prior art all in the field, and with using routine experiment hand before the date
The ability of section, one skilled in the art can improve in conjunction with self-ability and implement under the enlightenment that the application provides
This programme, some typical known features or known method should not implement the application as one skilled in the art
Obstacle.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, can also make
Go out several modifications and improvements, these should also be considered as protection scope of the present invention, these all do not interfere with the effect that the present invention is implemented
Fruit and patent practicability.The scope of protection required by this application should be based on the content of the claims, the tool in specification
The records such as body embodiment can be used for explaining the content of claim.
Claims (6)
1. classroom instruction auxiliary device, it is characterised in that：It include the display unit for projection imaging；The display unit sliding
It is connected on platform；Foot pad is equipped on the surface of platform, the foot pad includes multiple equally distributed pedal units；Each step on
It includes an air bag for being used for that display unit is driven to move and a hydraulic bag that clear water is housed to step on unit；It is all in foot pad
Hydraulic bag communicates with each other；The side of foot pad is equipped with the outlet pipe being connected to a certain hydraulic bag；The air bag includes face setting
The first sacculus and the second sacculus, the first sacculus and the second sacculus communicate with each other；First sacculus close to the display unit,
Second sacculus is far from the display unit；The display unit includes magnet piece；It is equipped in first sacculus and is used for arranging
Denounce magnet piece electromagnet group and with the concatenated contact-making switch of electromagnet group；The contact-making switch enters first by the second sacculus
The air stream drives of sacculus are opened.
2. classroom instruction auxiliary device according to claim 1, it is characterised in that：The display unit includes being slidably connected
Slide plate on platform and the curtain and projecting apparatus being arranged on slide plate.
3. classroom instruction auxiliary device according to claim 1, it is characterised in that：There are two the display units, and two
Magnet piece on a display unit one side magnetism close to each other is identical.
4. classroom instruction auxiliary device according to claim 3, it is characterised in that：The magnet piece of each display unit is at least
Including two, and two magnet pieces are separately mounted to the both ends that slide plate extends along glide direction.
5. classroom instruction auxiliary device according to claim 1, it is characterised in that：The outlet pipe has water outlet, institute
The top that water outlet is fixed on lectern is stated, the cup for water receiving is provided with below the water outlet.
6. classroom instruction auxiliary device according to claim 1, it is characterised in that：The hydraulic bag is arranged adjacent two
The screen pipe for crossing drainage is communicated between a second sacculus, on each hydraulic bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810622404.2A CN108766048A (en) | 2018-06-15 | 2018-06-15 | Classroom instruction auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810622404.2A CN108766048A (en) | 2018-06-15 | 2018-06-15 | Classroom instruction auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108766048A true CN108766048A (en) | 2018-11-06 |
Family
ID=63978371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810622404.2A Pending CN108766048A (en) | 2018-06-15 | 2018-06-15 | Classroom instruction auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108766048A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637287A (en) * | 2019-01-14 | 2019-04-16 | 宿州市鑫尧健康科技有限公司 | A kind of teaching demonstration device |
| CN111415548A (en) * | 2020-04-10 | 2020-07-14 | 湖南城市学院 | Music score writing demonstration board for music teaching and use method thereof |
-
2018
- 2018-06-15 CN CN201810622404.2A patent/CN108766048A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637287A (en) * | 2019-01-14 | 2019-04-16 | 宿州市鑫尧健康科技有限公司 | A kind of teaching demonstration device |
| CN109637287B (en) * | 2019-01-14 | 2020-12-01 | 宿州市鑫尧健康科技有限公司 | Teaching display device |
| CN111415548A (en) * | 2020-04-10 | 2020-07-14 | 湖南城市学院 | Music score writing demonstration board for music teaching and use method thereof |
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