CN107752351A - A kind of mathematical education computer desktop expanding device - Google Patents
A kind of mathematical education computer desktop expanding device Download PDFInfo
- Publication number
- CN107752351A CN107752351A CN201711195767.4A CN201711195767A CN107752351A CN 107752351 A CN107752351 A CN 107752351A CN 201711195767 A CN201711195767 A CN 201711195767A CN 107752351 A CN107752351 A CN 107752351A
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- China
- Prior art keywords
- case lid
- bar
- straight
- casing
- montant
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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
- A47B1/00—Extensible tables
- A47B1/04—Extensible tables with supplementary leaves or drop leaves arranged at the periphery
-
- 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
- A47B13/00—Details of tables or desks
-
- 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
- A47B13/00—Details of tables or desks
- A47B13/08—Table tops; Rims therefor
- A47B13/081—Movable, extending, sliding table tops
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Abstract
A kind of mathematical education computer desktop expanding device, effectively solve the problems, such as that position not enough causes efficiency of teaching low on multimedia teaching desk；Casing upper end, which horizontally slips, is provided with case lid, casing left and right ends are equipped with rotating shaft vertically respectively, case lid is stretched into rotating shaft upper end, case lid includes left case lid and right case lid, and upper end is provided with the fixed block that can be stretched into dovetail groove in left case lid, and rotating shaft lower end is provided with ring gear, lower surface is rotatablely equipped with roller bearing vertically in casing, the upper end of roller bearing is installed with leading screw, coordinates on leading screw and is provided with screw set, forms and rotates the structure that left case lid make it that screw set moves up and down；The desktop of teaching multimedia desk can be expanded, so that more realias and the personal effects of teacher can be put down on desktop, desktop is when being expanded, desktop can be expanded by being not required to carry out the operation of complexity, present inventive concept is ingenious, unnecessary operation can be reduced as far as possible, improved the quality of teaching and efficiency.
Description
Technical field
The present invention relates to educational aid technical field, more particularly to a kind of mathematical education computer desktop expanding device.
Background technology
It is typically all the multimedia teaching desk used in present teaching, multimedia teaching desk is convenient and diversified with it
Advantage causes multimedia teaching facility to be widely used in teaching, but some teaching appliances are needed in mathematical education, religion
Learning utensil enables the apparatus that student uses when intuitively, visually understanding each appliances and teachers' instruction used in the content of courses
General name, teaching aid can improve the learning interest of student, enrich perceptual knowledge, and help forms clear and definite concept, the sight of Developing Students '
Ability and thinking ability are examined, but the size of multimedia teaching desk is limited, it is necessary to place books, computer display screen and multimedia control
The multiple lines such as device processed, so the teaching appliance that can be shown on classroom for students is also very limited, it is impossible to meet one
As teaching demand.
The quality of desk for teaching design directly influences the efficiency of teaching, with the improvement of living standards, everybody is increasingly
Teaching method multifunction is pursued, multi-functional desk for teaching can save space and money, improve the quality of teaching and efficiency, mesh
The tables and chairs structure of preceding major colleges and universities' generally existing is inflexible, and function is single, and serves pole to the smart and adaptability in classroom
Big restriction effect so that classroom environment lacks lively, and Students ' Learning efficiency is low, and functionally single can not be good
Meet the individual demand of teacher and tackle following classroom may needs various occasions.
So a kind of mathematical education is needed with computer desktop expanding device to solve this problem.
The content of the invention
For the above situation, to overcome the defect of prior art, the purpose of the present invention is just to provide a kind of mathematical education and used
Computer desktop expanding device, effectively solve the problems, such as that position not enough causes efficiency of teaching low on multimedia teaching desk.
Its technical scheme solved is that the present invention includes casing, and casing upper end is provided with opening, and casing upper end horizontally slips
Case lid is installed, casing left and right ends are equipped with rotating shaft vertically respectively, and case lid is stretched into rotating shaft upper end, and rotating shaft upper end is provided with trapezoidal
Groove, case lid include left case lid and right case lid, and upper end is provided with the fixed block that can be stretched into dovetail groove in left case lid, in fixed block
The groove of horizontal direction is provided with, the first wedge is slidably fitted with groove, between the first wedge lower end and groove floor
The first spring is provided with, rotating shaft lower end is provided with ring gear, and lower surface is rotatablely equipped with roller bearing vertically in casing, is provided with roller bearing
Gear, the toothed chain being connected with ring gear is provided with gear, and the upper end of roller bearing is installed with leading screw, coordinates installation on leading screw
There is screw set, form and rotate the structure that left case lid make it that screw set moves up and down, left case lid is identical with right cover structure；
Two rotation seats being vertically arranged are provided with casing, are rotatablely equipped with the first straight-bar and second straight on rotation seat respectively
Bar, the right-hand member of the first straight-bar are rotatablely equipped with the first montant, and the end of the first montant is rotatablely connected with the second straight-bar right-hand member, make the
One straight-bar and the second straight-bar form parallelogram lindage, and the upper end of the first montant is rotatablely equipped with A-frame, the first montant
Lower end is rotatablely equipped with the 3rd straight-bar, and the left end of the 3rd straight-bar is rotatablely equipped with the second montant, the left end of A-frame and second
Montant is rotatablely connected, and the 3rd straight-bar and A-frame is formed parallelogram lindage, the right-hand member of A-frame and the second straight-bar
Left end is rotatablely equipped with the 4th straight-bar, and the upper end of the second montant is installed with straight panel, cunning is provided with the left end of the first straight-bar
Groove, sliding block is installed in chute, sliding block is rotatablely connected with screw set, is formed screw set and is moved up and down and drives what straight panel moved up and down
Structure；
The beneficial effects of the invention are as follows：The desktop of teaching multimedia desk can be expanded so that can be put down on desktop more
Realia and the personal effects of teacher, when being expanded, desktop can be expanded desktop by being not required to carry out the operation of complexity, this
Inventive concept is ingenious, can reduce unnecessary operation as far as possible, improve the quality of teaching and efficiency.
Brief description of the drawings
Fig. 1 is the front view that the present invention opens.
Fig. 2 is the front view profile that the present invention folds.
Fig. 3 is the structural representation that the present invention once expands.
Fig. 4 is the top view of the present invention.
Fig. 5 is the secondary structural representation for expanding part closure state of the present invention.
Fig. 6 is the secondary structural representation for expanding part open mode of the present invention.
Fig. 7 is the enlarged diagram of A in Fig. 2 of the present invention.
Fig. 8 is the enlarged diagram of B in Fig. 3 of the present invention.
Fig. 9 is the sectional view in C-C directions in Fig. 2 of the present invention.
Figure 10 is the enlarged diagram of D in Fig. 2 of the present invention.
Figure 11 is the enlarged diagram of E in Fig. 6.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment：
Provided by Fig. 1 to Figure 11, the present invention includes casing 1, and the upper end of casing 1 is provided with opening, and the upper end of casing 1 horizontally slips installation
There is case lid 2, the left and right ends of casing 1 are equipped with rotating shaft 3 vertically respectively, and case lid 2 is stretched into the upper end of rotating shaft 3, and the upper end of rotating shaft 3 is provided with trapezoidal
Groove 4, case lid 2 include left case lid 5 and right case lid 6, and upper end is provided with the fixed block 7 that can be stretched into dovetail groove 4 in left case lid 5, Gu
Determine to be provided with the groove 8 of horizontal direction in block 7, be slidably fitted with the first wedge 9 in groove 8, the lower end of the first wedge 9 with it is recessed
The first spring 10 is provided between the bottom surface of groove 8, the lower end of rotating shaft 3 is provided with ring gear 11, and lower surface is rotatablely equipped with vertically in casing 1
Roller bearing 12, gear 13 is installed on roller bearing 12, is provided with the toothed chain 14 being connected with ring gear 11 on gear 13, roller bearing 12 it is upper
End is installed with leading screw 15, coordinates on leading screw 15 and is provided with screw set 16, forms and rotates left case lid 5 so that screw set is about 16
Mobile structure, left case lid 5 are identical with the right structure of case lid 6；
Two rotation seats being vertically arranged 17 are provided with casing 1, are rotatablely equipped with the He of the first straight-bar 18 on rotation seat 17 respectively
Second straight-bar 19, the right-hand member of the first straight-bar 18 are rotatablely equipped with the first montant 20, the end of the first montant 20 and the second straight-bar 19
Right-hand member is rotatablely connected, and the first straight-bar 18 and the second straight-bar 19 is formed parallelogram lindage, the upper end of the first montant 20 rotates peace
Equipped with A-frame 21, the lower end of the first montant 20 is rotatablely equipped with the 3rd straight-bar 22, the left end rotational installation of the 3rd straight-bar 22
There is the second montant 23, the left end of A-frame 21 is rotatablely connected with the second montant 23, makes the 3rd straight-bar 22 and the structure of A-frame 21
Into parallelogram lindage, the left end of the right-hand member of A-frame 21 and the second straight-bar 19 is rotatablely equipped with the 4th straight-bar 24, and second is perpendicular
The upper end of bar 23 is installed with straight panel 25, and chute 26 is provided with the left end of the first straight-bar 18, sliding block is provided with chute 26
27, sliding block 27 is rotatablely connected with screw set 16, is formed screw set 16 and is moved up and down the structure for driving straight panel 25 to move up and down.
Secondary it can be expanded in order that obtaining desk, described left case lid 5 includes outer case lid 52, and level is slided in outer case lid 52
Interior case lid 53 is installed, the outer lower end of case lid 52 is provided with the first supporting plate 28 and the second supporting plate 29, and the outer lower end of case lid 52 rotates
First U-shaped bar 30 is installed, the end of the first U-shaped bar 30 is rotatablely connected with the left end of the first supporting plate 28, and the first U-shaped bar 30 is right
Side is provided with the second U-shaped bar 31, and the middle part of the second U-shaped bar 31 is rotatablely connected with the middle part of the first supporting plate 28, the second U-shaped bar 31
Both ends be rotatablely connected respectively with the left end of the lower end of outer end cap and the second supporting plate 29, the right-hand member of the first supporting plate 28 rotates peace
Equipped with the 3rd U-shaped bar 32, the end of the 3rd U-shaped bar 32 is rotatablely connected with the middle part of the second supporting plate 29, the second supporting plate 29
Right-hand member is provided with drawstring 33, and the end of drawstring 33 is fixedly connected with the right-hand member of interior case lid 53, and forming case lid 53 in pulling can make
First supporting plate 28, the second supporting plate 29 and the structure of the interior sustained height of case lid 53.
In order to which the first straight-bar 18 and the second straight-bar 19 can form parallelogram lindage, between described two rotation seats 17
Distance and the equal length of the first montant 20.
In order to which the 3rd straight-bar 22 and A-frame 21 can form parallelogram lindage, the installation of the described left end of A-frame 21
Position on the second montant 23 is arranged on the position on the second montant 23 and the length phase of the first montant 20 with the 3rd straight-bar 22
Deng.
In order to which straight panel 25 can have enough support forces, the left and right ends at the described upper shed of casing 1 are set with
Support block 34, second spring 35 is horizontally installed with support block 34, one end and the end of the opening of casing 1 of second spring 35 are consolidated
Fixed connection, the inside one end of support block 34 are provided with the second wedge 36 straight down, the outside one end installation of support block 34
There is projection 37 straight up, the upper end of the second wedge 36 is installed with support bar 38 straight up.
In order that original position can be returned to by obtaining case lid 2 and straight panel 25, the groove of vertical direction is provided with described fixed block 7
39, groove 39 is connected with groove 8, and the guide rod 40 that can be contacted with projection 37, guide rod 40 and first wedge are slidably fitted with groove 39
Shape block 9 is fixedly connected, and is formed slide downward guide rod 40 and is caused fixed block 7 to separate the knot slid in and out with support block 34 with rotating shaft 3
Structure, port 51 is provided with left case lid 5 and right case lid 6, and the upper end of guide rod 40 passes through port 51 and stretches out case lid 2.
In order that obtaining case lid 2 can horizontally slip, and can only be horizontally slipped in certain position, the described trailing flank of casing 1
First baffle 41 is provided with, the leading flank of casing 1 is provided with second baffle 42.
During in order that proper first supporting plate 28, the second supporting plate 29 are with interior 53 sustained height of case lid, the first supporting plate 28
Because of the pressure of deadweight and weight the first supporting plate 28 and the second supporting plate 29 will not be moved down with the second supporting plate 29,
Described the inner of interior case lid 53 offers buckle slot 43, is slided in buckle slot 43 and is provided with the 3rd wedge 44, buckle slot 43
Medial surface is provided with the 3rd spring 45, and the end of the 3rd spring 45 is fixedly connected with the 3rd wedge 44, the second supporting plate 29
End set has the blind hole 46 that can be connected with the 3rd wedge 44, and the interior upper end of case lid 53 is provided with what is connected with buckle slot 43
Undercut 47, the driving lever 48 being fixedly connected with sliding block 27 is slidably fitted with undercut 47.
In order that more educational aids and experiment equipment can be loaded by obtaining casing 1, glove is provided with described casing 1
Cabinet 49, the leading flank of casing 1 are provided with the rotation door 50 being connected with article placing cabinet 49.
In the use of the present invention, horizontally slip respectively left case lid 5 and right case lid 6 so that left case lid 5 and right case lid 6 are mutual
Separation so that the fixed block 7 on left case lid 5 and right case lid 6 slides to rotating shaft 3, oblique when the first wedge 9 on fixed block 7
When face contacts with dovetail groove 4, dovetail groove 4 moves down, and when fixed block 7 is slipped into dovetail groove 4, the first wedge 9 is in the first bullet
Being moved up in the presence of spring 10 so that wedge withstands on the side of dovetail groove 4 so that fixed block 7 is fixedly connected with rotating shaft 3,
Left case lid 5 and right case lid 6 are rotated, left case lid 5 and right case lid 6 drive the ring gear 11 being arranged in rotating shaft 3 to rotate by rotating shaft 3,
Ring gear 11 drives the gear 13 being arranged on roller bearing 12 to rotate by toothed chain 14, and gear 13, which rotates, causes roller bearing 12 and installed in rolling
Leading screw 15 on axle 12 rotates, and leading screw 15 relatively rotates with screw set 16 so that screw set 16 to moving down, screw set 16 to
Lower movement to slide in chute 26 with the sliding block 27 that screw set 16 is rotatablely connected, and make it that the left end of the first straight-bar 18 is downward
Mobile, the left end of the first straight-bar 18 moves down so that the right-hand member of the first straight-bar 18 moves up, because the first straight-bar 18 and the
Two straight-bars 19 are parallelogram lindage so the right-hand member of the first straight-bar 18 and the second straight-bar 19 together moves up, when the first straight-bar
18 and second right-hand member of straight-bar 19 when moving up, the A-frame 21 installed in the right-hand member of the first straight-bar 18 is with the first straight-bar 18
Move up, now, the 4th straight-bar 24 installed in the right-hand member of A-frame 21 is done around the rotation seat 17 of the left end of the second straight-bar 19
Circular motion clockwise so that A-frame 21 is done around A-frame 21 with the position that the first straight-bar 18 is connected to be turned clockwise
Dynamic, i.e. the left end of A-frame 21 moves upwards, because the left surface of A-frame 21 and the 3rd straight-bar 22 are parallel four-bar machine
Structure, so the left end of the 3rd straight-bar 22 together moves up with the left end of A-frame 21, with the left end of A-frame 21 and the 3rd
The left end of straight-bar 22 connection the second montant 23 move straight up, the straight panel 25 being fixedly connected with the upper end of the second montant 23 vertically to
Upper motion, the first straight-bar 18, the second straight-bar 19, the first montant 20, the 3rd straight-bar 22, A-frame 21, the second montant 23 and
The double parallel four-bar mechanism that four straight-bars 24 are formed can increase the stroke of motion so that straight panel 25 can be with holding level with both hands on case lid 2
OK, straight panel 25 can encounter the support block 34 on casing 1 during rising, when straight panel 25 is encountered in support block 34
During the second wedge 36, the second wedge 36 drives support block 34 and projection 37 to be moved to the left, and straight panel 25 continues to move up, directly
The end of plate 25 withstands on the support bar 38 being fixed on the second wedge 36, when straight panel 25 is moved upwards up to extreme position, branch
Strut 38 leaves the side of straight panel 25, while support block 34 moves inward in the presence of second spring 35 so that support bar 38
Upper end withstand on the lower surface of straight panel 25, provide support force for straight panel 25.
When the desktop by once expanding is still not enough in use, pull out the interior case lid on left case lid 5 and right case lid 6
53, for interior case lid 53 when sliding, the 3rd wedge 44 in the interior buckle slot 43 of case lid 53 is outside in the presence of the 3rd spring 45
Ejection, while the drawstring 33 of the end of interior case lid 53 pulls the second supporting plate 29 obliquely, when the second supporting plate 29 is moved obliquely,
Because the second supporting plate 29 and the first supporting plate 28, the first supporting plate 28 and outer case lid 52 form parallel four-bar structure so that
First supporting plate 28 is moved in a circle around the junction of the first U-shaped bar 30 and outer case lid 52 for the center of circle, and the second supporting plate 29 is enclosed
Moved in a circle around the second U-shaped bar 31 and the junction of the first supporting plate 28 for the center of circle so that when interior case lid 53 slides into necessarily
During position, the end of the second supporting plate 29 is withstood on the inclined-plane of the 3rd wedge 44 so that the 3rd wedge 44 enters second
In blind hole 46 on fagging 29 so that the first U-shaped bar 30, the second U-shaped 31 and the 3rd U-shaped bar 32 of bar are in same plane, and
One supporting plate 28, the second supporting plate 29 are in same plane and fixed position with outer case lid 52, complete second of expansion.
When needing to withdraw the desktop expanded out, the driving lever 48 on interior case lid 53 is inwardly stirred so that solid with driving lever 48
Surely connect in the retraction buckle slot 43 of the 3rd wedge 44, the second supporting plate 29 is left sliding block 27 and moved down by deadweight, simultaneously
Move inward interior case lid 53 so that interior case lid 53 is returned in outer case lid 52, is pulled out projection 37 and is caused projection 37 to drive support
Block 34 and support bar 38 are together displaced outwardly so that and support bar 38 leaves straight panel 25, now, rotates left case lid 5 and right case lid 6,
Left case lid 5 and right case lid 6 drive the ring gear 11 being arranged in rotating shaft 3 to rotate by rotating shaft 3, and ring gear 11 is driven by toothed chain 14 pacifies
Gear 13 on roller bearing 12 rotates, and gear 13, which rotates, causes roller bearing 12 and the leading screw 15 on roller bearing 12 to rotate, silk
Thick stick 15 relatively rotates with screw set 16 so as to moving up, screw set 16 moves upwardly so that and screw set 16 screw set 16
The sliding block 27 of rotation connection slides in chute 26, and the left end of the first straight-bar 18 is moved up, a left side for the first straight-bar 18
End moves upwardly so that the right-hand member of the first straight-bar 18 moves down, because the first straight-bar 18 and the second straight-bar 19 are parallel four-bar machine
Structure is so the right-hand member of the first straight-bar 18 and the second straight-bar 19 together moves down, when the first straight-bar 18 and the right-hand member of the second straight-bar 19
When moving down, the A-frame 21 installed in the right-hand member of the first straight-bar 18 is moved down with the first straight-bar 18, now, is arranged on
4th straight-bar 24 of the right-hand member of A-frame 21 does counterclockwise circular motion around the rotation seat 17 of the left end of the second straight-bar 19 so that three
Angle support 21 rotates counterclockwise around A-frame 21 with the position that the first straight-bar 18 is connected, i.e., the left end of A-frame 21 to
Lower motion, because the left surface of A-frame 21 and the 3rd straight-bar 22 are parallelogram lindage, the left end of the 3rd straight-bar 22
Together moved down with the left end of A-frame 21, the second montant being connected with the left end of A-frame 21 and the left end of the 3rd straight-bar 22
23 move straight down, and the straight panel 25 being fixedly connected with the upper end of the second montant 23 moves straight down, when straight panel 25 moves down
When, can release projection 37, support block 34 drives support bar 38 to move inward in the presence of second spring 35 so that support bar 38
The side of the straight panel 25 declined is withstood on, persistently rotates left case lid 5 and right case lid 6 so that the side of left case lid 5 and right case lid 6
Face is withstood on first baffle 41, and now, straight panel 25 has been recovered in casing 1, and guide rod 40 is pressed downwards so that guide rod 40 drives
First wedge 9 moves down so that the first wedge 9 leaves dovetail groove 4, i.e. fixed block 7 separates with rotating shaft 3, slid inward
Left case lid 5 and right case lid 6 so that left case lid 5 and right case lid 6 contact, and complete to withdraw.
Computer cabinet can be arranged in article placing cabinet, computer display, keyboard and mouse installation are placed on straight panel 25
On, it convenient use and will not easily lose, in recoverable casing 1, be not easy ash when not in use, reducing unnecessary work
Make, some educational aids are opened when that need not take away classroom and rotate door 50, place items within article placing cabinet 49.
The beneficial effects of the invention are as follows：The desktop of teaching multimedia desk can be expanded so that can be put down more on desktop
More realias and the personal effects of teacher, when being expanded, desktop can be opened up desktop by being not required to carry out the operation of complexity
Exhibition, present inventive concept is ingenious, can reduce unnecessary operation as far as possible, improve the quality of teaching and efficiency.
Claims (9)
1. a kind of mathematical education computer desktop expanding device, including casing（1）, it is characterised in that casing（1）Upper end is set
There are opening, casing（1）Upper end, which horizontally slips, is provided with case lid（2）, casing（1）Left and right ends are equipped with rotating shaft vertically respectively（3）, turn
Axle（3）Case lid is stretched into upper end（2）, rotating shaft（3）Upper end is provided with dovetail groove（4）, case lid（2）Including left case lid（5）With right case lid
（6）, left case lid（5）Interior upper end, which is provided with, can stretch into dovetail groove（4）Interior fixed block（7）, fixed block（7）Inside it is provided with level
The groove in direction（8）, groove（8）Inside it is slidably fitted with the first wedge（9）, the first wedge（9）Lower end and groove（8）Bottom surface
Between be provided with the first spring（10）, rotating shaft（3）Lower end is provided with ring gear（11）, casing（1）Interior lower surface is rotatablely installed vertically
There is roller bearing（12）, roller bearing（12）On gear is installed（13）, gear（13）On be provided with and ring gear（11）The toothed chain of mating connection
（14）, roller bearing（12）Upper end be installed with leading screw（15）, leading screw（15）Upper cooperation is provided with screw set（16）, form and rotate
Left case lid（5）So that screw set（16）The structure moved up and down, left case lid（5）With right case lid（6）Structure is identical；
Casing（1）Inside it is provided with two rotation seats being vertically arranged（17）, rotation seat（17）It is upper that to be rotatablely equipped with first respectively straight
Bar（18）With the second straight-bar（19）, the first straight-bar（18）Right-hand member be rotatablely equipped with the first montant（20）, the first montant（20）'s
End and the second straight-bar（19）Right-hand member is rotatablely connected, and makes the first straight-bar（18）With the second straight-bar（19）Form parallelogram lindage,
First montant（20）Upper end be rotatablely equipped with A-frame（21）, the first montant（20）Lower end be rotatablely equipped with the 3rd straight-bar
（22）, the 3rd straight-bar（22）Left end be rotatablely equipped with the second montant（23）, A-frame（21）Left end and the second montant
（23）Rotation connection, makes the 3rd straight-bar（22）And A-frame（21）Form parallelogram lindage, A-frame（21）Right-hand member
With the second straight-bar（19）Left end be rotatablely equipped with the 4th straight-bar（24）, the second montant（23）Upper end be installed with straight panel
（25）, the first straight-bar（18）Left end on be provided with chute（26）, chute（26）Sliding block is inside installed（27）, sliding block（27）With silk
Thick stick set（16）Rotation connection, form screw set（16）Move up and down drive straight panel（25）The structure moved up and down.
A kind of 2. mathematical education computer desktop expanding device according to claim 1, it is characterised in that a described left side
Case lid（5）Including outer case lid（52）, outer case lid（52）Interior level is slidably fitted with interior case lid（53）, outer case lid（52）Lower end is set
There is the first supporting plate（28）With the second supporting plate（29）, outer case lid（52）Lower end is rotatablely equipped with the first U-shaped bar（30）, the first U
Type bar（30）End and the first supporting plate（28）Left end rotation connection, the first U-shaped bar（30）Right side is provided with the second U-shaped bar
（31）, the second U-shaped bar（31）Middle part and the first supporting plate（28）Middle part rotation connection, the second U-shaped bar（31）Both ends point
The not lower end with outer end cap and the second supporting plate（29）Left end rotation connection, the first supporting plate（28）Right-hand member be rotatablely equipped with
3rd U-shaped bar（32）, the 3rd U-shaped bar（32）End and the second supporting plate（29）Middle part rotation connection, the second supporting plate
（29）Right-hand member be provided with drawstring（33）, drawstring（33）End and interior case lid（53）Right-hand member be fixedly connected, form pull in
Case lid（53）The first supporting plate can be made（28）, the second supporting plate（29）With interior case lid（53）The structure of sustained height.
A kind of 3. mathematical education computer desktop expanding device according to claim 1, it is characterised in that described two
Individual rotation seat（17）The distance between with the first montant（20）Equal length.
A kind of 4. mathematical education computer desktop expanding device according to claim 1, it is characterised in that described three
Angle support（21）Left end is arranged on the second montant（23）On position and the 3rd straight-bar（22）Installed in the second montant（23）On
Position and the first montant（20）Equal length.
A kind of 5. mathematical education computer desktop expanding device according to claim 1, it is characterised in that described case
Body（1）Left and right ends at upper shed are set with support block（34）, support block（34）Inside it is horizontally installed with second spring（35）,
Second spring（35）One end and casing（1）The end of opening is fixedly connected, support block（34）Inside one end is provided with perpendicular
Straight the second downward wedge（36）, support block（34）Outside one end is provided with projection straight up（37）, the second wedge shape
Block（36）Upper end be installed with support bar straight up（38）.
6. a kind of mathematical education computer desktop expanding device according to claim 1, it is characterised in that described consolidates
Determine block（7）Inside it is provided with the groove of vertical direction（39）, groove（39）With groove（8）Connection, groove（39）Inside it is slidably fitted with
Can be with projection（37）The guide rod of contact（40）, guide rod（40）With the first wedge（9）It is fixedly connected, forms slide downward guide rod
（40）So that fixed block（7）With rotating shaft（3）Separation and support block（34）The structure slid in and out, left case lid（5）With right case lid（6）
On be provided with port（51）, guide rod（40）Upper end pass through port（51）Stretch out case lid（2）.
A kind of 7. mathematical education computer desktop expanding device according to claim 1, it is characterised in that described case
Body（1）Trailing flank is provided with first baffle（41）, casing（1）Leading flank is provided with second baffle（42）.
8. a kind of mathematical education computer desktop expanding device according to claim 2, it is characterised in that described is interior
Case lid（53）The inner offers buckle slot（43）, buckle slot（43）Interior slip is provided with the 3rd wedge（44）, buckle slot（43）
Medial surface be provided with the 3rd spring（45）, the 3rd spring（45）End and the 3rd wedge（44）It is fixedly connected, second
Fagging（29）End set have can be with the 3rd wedge（44）The blind hole of mating connection（46）, interior case lid（53）Upper end is provided with
With buckle slot（43）The undercut of connection（47）, undercut（47）Inside it is slidably fitted with and sliding block（27）The driving lever being fixedly connected（48）.
A kind of 9. mathematical education computer desktop expanding device according to claim 1, it is characterised in that described case
Body（1）Inside it is provided with article placing cabinet（49）, casing（1）Leading flank be provided with and article placing cabinet（49）The rotation door of mating connection
（50）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711195767.4A CN107752351A (en) | 2017-11-24 | 2017-11-24 | A kind of mathematical education computer desktop expanding device |
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| CN201711195767.4A CN107752351A (en) | 2017-11-24 | 2017-11-24 | A kind of mathematical education computer desktop expanding device |
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| CN107752351A true CN107752351A (en) | 2018-03-06 |
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| CN201711195767.4A Pending CN107752351A (en) | 2017-11-24 | 2017-11-24 | A kind of mathematical education computer desktop expanding device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379276A (en) * | 2019-07-22 | 2019-10-25 | 河南应用技术职业学院 | A kind of medical teaching model exhibition stand |
| CN110960807A (en) * | 2019-12-05 | 2020-04-07 | 上海联影医疗科技有限公司 | Medical linear accelerator system |
| CN112790517A (en) * | 2020-12-31 | 2021-05-14 | 湖北联网电力设计有限公司 | Design platform for digital planning of power distribution network |
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| DE102004055145A1 (en) * | 2004-11-16 | 2006-05-18 | Nagel, Erwin, Dipl.-Ing. | Folding table which can be enlarged has rotating plates which by swivel movement cause raising of lifting plate to form desktop whereby plates are separated by hair joint |
| CN202664683U (en) * | 2012-06-13 | 2013-01-16 | 福建茗匠竹艺科技有限公司 | Round dining table with lifting lateral plates |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102004055145A1 (en) * | 2004-11-16 | 2006-05-18 | Nagel, Erwin, Dipl.-Ing. | Folding table which can be enlarged has rotating plates which by swivel movement cause raising of lifting plate to form desktop whereby plates are separated by hair joint |
| CN202664683U (en) * | 2012-06-13 | 2013-01-16 | 福建茗匠竹艺科技有限公司 | Round dining table with lifting lateral plates |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379276A (en) * | 2019-07-22 | 2019-10-25 | 河南应用技术职业学院 | A kind of medical teaching model exhibition stand |
| CN110379276B (en) * | 2019-07-22 | 2021-08-20 | 河南应用技术职业学院 | Model stand is used in medical science teaching |
| CN110960807A (en) * | 2019-12-05 | 2020-04-07 | 上海联影医疗科技有限公司 | Medical linear accelerator system |
| CN112790517A (en) * | 2020-12-31 | 2021-05-14 | 湖北联网电力设计有限公司 | Design platform for digital planning of power distribution network |
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