CN107718947A - A kind of multi-functional blackboard - Google Patents
A kind of multi-functional blackboard Download PDFInfo
- Publication number
- CN107718947A CN107718947A CN201710776525.8A CN201710776525A CN107718947A CN 107718947 A CN107718947 A CN 107718947A CN 201710776525 A CN201710776525 A CN 201710776525A CN 107718947 A CN107718947 A CN 107718947A
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- CN
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- Prior art keywords
- drive
- groove
- scale
- plate body
- sliding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/001—Mathematical drawing instruments
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Abstract
The invention discloses a kind of multi-functional blackboard, including plate body, plate body bottom is provided with mounting rail, screw rod is provided with mounting rail, is slid in mounting rail and is connected with slipping block, screwed hole is provided with slipping block, screw flight is connected on screwed hole, screw rod is rotated, slipping block is moved in mounting rail, and chute is provided with slipping block, sliding is connected with scale in chute, bar shaped tooth is provided with scale, annular tooth is provided with rotating cylinder, bevel is hinged with scale.The present invention has the beneficial effect that, enough control scale that when needing picture oblique line, the 3rd rotating mechanism can be driven in the position of horizontal level, so that the 3rd drive rotates, drive the second drive to be rotated by the second driving belt, in the second drive rotation process, pass through the first driving belt, the first drive is driven to be rotated, so as to drive bevel to rotate so as to form an oblique line, angle of inclination can be thus turned to as required, the oblique line of needs is drawn according to bevel.
Description
Technical field
The present invention relates to a kind of realia, more particularly to a kind of multi-functional blackboard.
Background technology
Blackboard is not to refer in particular to the plate face of black, said in traditional sense it be one can be hard with the plane of repeated writing, plate face
Firmly, it is used for imparting knowledge to students.Made of plank or ground glass etc., it can be write with the specific writing material such as chalk above.
Mostly black, blackish green, white or ecru.
It is often required to draw straight line or oblique line on blackboard in teaching, during use, during normal use, usually
Need to use ruler, primarily serve a demonstration effect for black, the size of ruler is larger, is easy to take off in scratching process
Fall so that whether line work is inconvenient.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide.
To achieve the above object, the invention provides following technical scheme：A kind of multi-functional blackboard of convenient line.
A kind of multi-functional blackboard, including plate body, the plate body bottom are provided with mounting rail, spiral shell are provided with the mounting rail
Bar, described screw rod one end are connected with the first rotating mechanism, first rotating mechanism, and the interior sliding of the mounting rail is connected with sliding
Block, screwed hole is provided with the slipping block, the screw flight is connected on screwed hole, rotates the screw rod, the sliding
Block moves in mounting rail, and the part that the slipping block stretches out mounting rail is provided with chute, is slid in the chute and is connected with mark
Chi, the scale stretches out from slippage slot both ends, and plate body is stretched in one end, and bar shaped tooth, the plate body bottom are provided with the scale
Portion is provided with rotating cylinder, and annular tooth, the annular tooth and the bar shaped tooth positioned at plate body one end backwards are provided with the rotating cylinder
Engage, be provided with the second rotating mechanism on the rotating cylinder, be hinged with the scale for drawing parallax on plate body
Bevel, it is provided with the scale and is additionally provided with the first drive, first drive is connected with bevel, and drives bevel to turn
It is dynamic, the second drive and the 3rd drive are additionally provided with outside the plate body, between first drive and the second drive
It is connected by the first driving belt, is driven and connected by the second driving belt between second drive and the 3rd drive
Connect, the first drive center is hinged with the first hinge bar, and first hinge bar is backwards to one end of the first drive
The second drive center is hinged on, is provided with the second hinge bar on second drive and the 3rd drive, described
The both ends of one hinge bar are respectively hinged on the center of the second drive and the 3rd drive, are set on the 3rd drive
It is equipped with the 3rd rotating mechanism that the 3rd drive of driving rotates.
As a further improvement on the present invention, holding tank is provided with the scale, the bevel is hinged in holding tank,
Inserting groove is provided with the bevel, the inserted block that scale is inserted on inserting groove is provided through on first drive.
As a further improvement on the present invention, the first sliding groove is provided with the scale, is set on first sliding groove
The first sliding shoe is equipped with, described first sliding shoe one end is stretched out from the first sliding groove, and first sliding shoe stretches out first
Sliding groove one end, which is provided with, is inserted in the first chalk jack that straight line is drawn on plate body for chalk.
As a further improvement on the present invention, the second sliding groove is provided with the bevel, is set on second sliding groove
The second sliding shoe is equipped with, described the second sliding shoe one end is stretched out from the second sliding groove, and the second sliding shoe stretches out second
Sliding groove one end, which is provided with, is inserted in the second chalk jack that oblique line is drawn on plate body for chalk.
As a further improvement on the present invention, first sliding shoe and the second sliding shoe are located at the first sliding groove and second
Part in sliding groove is provided with recessed groove, and spring is provided with the recessed groove, and pellet, the bullet are provided with the spring
Spring keeps pellet to stretch out outside recessed groove, and the embedding of ammunition feed insertion is provided with first sliding groove and the second sliding groove inwall
Groove.
As a further improvement on the present invention, limited block is provided with the slipping block, confession is provided with the mounting rail
The stopper slot of limited block insertion.
As a further improvement on the present invention, the limited block is trapezoidal, and the short side of the stopper slot and slipping block weight
Close, the stopper slot with it is spacing block-shaped identical.
As a further improvement on the present invention, first rotating mechanism, the second rotating mechanism, the 3rd rotating mechanism are
Clockwise and anticlockwise motor.
As a further improvement on the present invention, first annular groove, second transmission are provided with first drive
The second annular groove and the 3rd annular groove are provided with wheel, fourth annular groove is provided with the 3rd drive, described first passes
Dynamic belt is embedded into the first annular annular groove of groove box second, and second driving belt is embedded into the 3rd annular groove and Fourth Ring
In shape groove.
As a further improvement on the present invention, first drive is provided with the first articulated column backwards to one end of inserted block,
The second drive both ends are respectively arranged with the second articulated column and the 3rd articulated column, and the 3rd drive rotates backwards to the 3rd
One end of mechanism sets the 4th articulated column, and first hinge bar and the second hinge bar both ends are provided with hinge hole, and described the
Hinge hole on one hinge bar is respectively hinged on the first articulated column and the second articulated column, the hinge on second hinge bar
Hole is connect to be respectively hinged on the 3rd articulated column and the 4th articulated column.Beneficial effects of the present invention, in use, first can
Driving the first rotating mechanism so that the first rotating mechanism is rotated so as to drive the slipping block within mounting rail to be subjected to displacement,
This makes it possible to control scale in the position of horizontal level, in displacement process, because annular tooth engages with bar shaped tooth, this
Batten shape tooth will enter line slip in the between cog of annular tooth, not interfere with normal use adjustment.
Simultaneously can be by driving the second rotating mechanism so that rotating cylinder also rotates, so that annular tooth drives
Bar shaped tooth, it can thus control position of the scale on vertical.
The first transmission mechanism and the second transmission mechanism can also be driven simultaneously, while adjusts horizontally and vertically position, so
Can enables scale to be displaced on any position.
When needing picture oblique line, the 3rd rotating mechanism can be driven so that the 3rd drive rotates, and is passed by second
The dynamic drive of belt drive second is rotated, and in the second drive rotation process, by the first driving belt, drives first
Drive is rotated, and so as to drive bevel to rotate so as to form an oblique line, can thus be turned to as required
Angle of inclination, the oblique line of needs is drawn according to bevel.
, can be during regulation scale due to the setting of the first hinge bar and the second hinge bar, the 3rd drive is
Fix on the wall, and the first drive and the second drive are relative motions, the first hinge bar and the second hinge bar are all
Be hinged on the first drive, the second drive, on the 3rd drive, on the one hand can play one give the first drive and
The supporting role of second drive, on the other hand, the first drive and the second drive are enabled in scale motion process
Also the situation spacing of relative displacement, which occurs, to be changed.
Brief description of the drawings
Fig. 1 is the overall structure figure of the present invention；
Fig. 2 is the detonation configuration figure of the present invention；
Fig. 3 is the backsight explosive view of the present invention；
Fig. 4 is the scale internal structure schematic diagram of the present invention；
Fig. 5 is the bevel internal structure schematic diagram of the present invention.
Reference：
1st, plate body；2nd, mounting rail；3rd, screw rod；4th, the first rotating mechanism；5th, slipping block；6th, screwed hole；7th, chute；8th, mark
Chi；9th, bar shaped tooth；10th, rotating cylinder；11st, annular tooth；12nd, the second rotating mechanism；13rd, bevel；14th, the first drive；141st,
Two drives；15th, the 3rd drive；16th, the first driving belt；17th, the second driving belt；18th, the first hinge bar；19th, second
Hinge bar；20th, the 3rd rotating mechanism；21st, holding tank；22nd, inserting groove；23rd, inserted block；24th, the first sliding groove；25th, first slide
Block；26th, the first chalk jack；27th, the second sliding groove；28th, the second sliding shoe；29th, the second chalk jack；30th, recessed groove；31、
Spring；32nd, pellet；33rd, caulking groove；34th, limited block；35th, stopper slot；36th, first annular groove；37th, the second annular groove；38th, the 3rd
Annular groove；381st, fourth annular groove；39th, the first articulated column；40th, the second articulated column；41st, the 3rd articulated column；42nd, the 4th is be hinged
Post；43rd, hinge hole.
Embodiment
The present invention is described in further detail below in conjunction with the embodiment given by accompanying drawing.
Referring to figs. 1 to shown in 5, a kind of multi-functional blackboard of the present embodiment, including plate body 1, the bottom of plate body 1 are provided with
Mounting rail 2, is provided with screw rod 3 in the mounting rail 2, and described one end of screw rod 3 is connected with the first rotating mechanism 4, described first turn
Motivation structure 4, the interior sliding of the mounting rail 2 are connected with slipping block 5, screwed hole 6, the spiral shell of screw rod 3 are provided with the slipping block 5
Line is connected on screwed hole 6, rotates the screw rod 3, and the slipping block 5 moves in mounting rail 2, and the slipping block 5 stretches out peace
The part of dress rail 2 is provided with chute 7, is slid in the chute 7 and is connected with scale 8, and the scale 8 stretches out from slippage slot both ends,
And plate body 1 is stretched in one end, bar shaped tooth 9 is provided with the scale 8, the bottom of plate body 1 is provided with rotating cylinder 10, the rotation
Annular tooth 11 is provided with cylinder 10, the annular tooth 11 engages with positioned at the bar shaped tooth 9 backwards to the one end of plate body 1, the rotating cylinder
The second rotating mechanism 12 is provided with 10, the bevel 13 for drawing parallax on plate body 1, institute are hinged with the scale 8
State to be provided with scale 8 and be additionally provided with the first drive 14, first drive is connected with bevel 13, and drives 13 turns of bevel
It is dynamic, the second drive 141 and the 3rd drive 15 are additionally provided with outside the plate body 1, first drive 14 and second passes
It is connected by the first driving belt 16 between driving wheel 141, is passed through between the drive 15 of the second drive 141 and the 3rd
Second driving belt 17 is connected, and the first drive center is hinged with the first hinge bar 18, and described first is be hinged
Bar 18 is hinged on the center of the second drive 141, second drive 141 and the 3rd backwards to one end of the first drive 14
The second hinge bar 19 is provided with drive 15, the both ends of first hinge bar 18 are respectively hinged at the He of the second drive 141
On the center of 3rd drive 15, the 3rd turn that the 3rd drive 15 of driving rotates is provided with the 3rd drive 15
Motivation structure 20.
In use, the first rotating mechanism 4 can be driven first so that the first rotating mechanism 4 is rotated so as to drive
Slipping block 5 within mounting rail 2 is subjected to displacement, and is moved past in place in the position of horizontal level this makes it possible to control scale 8
Cheng Zhong, because annular tooth 11 engages with bar shaped tooth 9, such bar shaped tooth 9 will enter line slip in the between cog of annular tooth 11, no
Normal use adjustment can be influenceed.
Simultaneously can be by driving the second rotating mechanism 12 so that rotating cylinder 10 also rotates, so that annular tooth
11 drive bar shaped teeth 9, can thus control position of the scale 8 on vertical.
The first transmission mechanism and the second transmission mechanism can also be driven simultaneously, while adjusts horizontally and vertically position, so
Can enables scale 8 to be displaced on any position.
When needing picture oblique line, the 3rd rotating mechanism 20 can be driven so that the 3rd drive 15 rotates, and passes through
Two driving belts 17 drive the second drive 141 to be rotated, and in the rotation process of the second drive 141, pass through the first transmission
Belt 16, the first drive 14 is driven to be rotated, so as to drive bevel 13 to rotate so as to form an oblique line, thus
Angle of inclination can be turned to as required, and the oblique line of needs is drawn according to bevel 13.
, can be during regulation scale 8 due to the setting of the first hinge bar 18 and the second hinge bar 19, the 3rd transmission
Wheel 15 is integrally fixed on wall, and the first drive 14 and the second drive 141 are relative motions, the first hinge bar 18 and the
Two hinge bars 19 are all hinged on the first drive 14, the second drive 141, on the 3rd drive 15, on the one hand can risen
The supporting role for giving the first drive 14 and the second drive 141 to one, on the other hand, the energy in the motion process of scale 8
Enough so that the situation spacing that relative displacement also occurs for the first drive 14 and the second drive 141 will not change.
As a kind of improved embodiment, holding tank 21 is provided with the scale 8, the bevel 13 is hinged on
In holding tank 21, inserting groove 22 is provided with the bevel 13, being provided through scale 8 on first drive 14 is inserted into
Inserted block 23 on inserting groove 22.
By the setting of holding tank 21, the receiving effect for bevel 13 can be played so that uncomfortable used in bevel 13
It can be housed in holding tank 21 in journey, save space so that overall structure is smaller, while inserting groove 22 and inserted block 23
Coordinate so that the first drive 14 can drive bevel 13 to move in motion process, the shape choosing of inserting groove 22 and inserted block 23
It is more suitable with regular polygon prism.
As a kind of improved embodiment, the first sliding groove 24 is provided with the scale 8, described first slides
The first sliding shoe 25 is provided with groove 24, described one end of first sliding shoe 25 is stretched out from the first sliding groove, and described first slides
Motion block 25 stretches out first sliding groove one end and is provided with the first chalk jack 26 for being inserted in for chalk and straight line being drawn on plate body 1.
As a kind of improved embodiment, the second sliding groove 27 is provided with the bevel 13, described second slides
The second sliding shoe 28 is provided with dynamic groove 27, described one end of the second sliding shoe 28 is stretched out from the second sliding groove, and described second
Sliding shoe 28 stretches out second sliding groove one end and is provided with the second chalk jack 29 for being inserted in for chalk and oblique line being drawn on plate body 1.
By the setting of the first sliding shoe 25 and the second sliding shoe 28, chalk directly can be inserted into the first chalk jack
26 and second in chalk jack 29, directly allows the first sliding shoe 25 or the second sliding shoe 28 to be slided in the first sliding groove or second
Enter line slip in groove, it is possible to directly draw more neat straight line and oblique line.So that using more convenient.
As a kind of improved embodiment, first sliding shoe 25 and the second sliding shoe 28 slide positioned at first
Part in the sliding groove 27 of groove 24 and second is provided with recessed groove 30, and spring 31, the spring are provided with the recessed groove 30
Pellet 32 is provided with 31, the spring 31 keeps pellet 32 to stretch out outside recessed groove 30, and first sliding groove 24 and second is slided
The caulking groove 33 of the insertion of ammunition feed 32 is provided with the dynamic inwall of groove 27.
Pass through the cooperation of pellet 32 and caulking groove 33 so that in the first sliding shoe 25 and the second sliding shoe 28 in use
There is a position-limiting action, can be limited during impracticable, will not arbitrarily be slided.
As a kind of improved embodiment, limited block 34 is provided with the slipping block 5, on the mounting rail 2
It is provided with the stopper slot 35 being embedded in for limited block 34.
By the cooperation of limited block 34 and stopper slot 35, slipping block 5 is enabled to be not easily disconnected from, make in installation process
Obtain more stable in slipping.
As a kind of improved embodiment, the limited block 34 is trapezoidal, and the short side of the stopper slot 35 with
Slipping block 5 overlaps, and the stopper slot 35 is identical with the shape of limited block 34.
By the way that limited block 34 and stopper slot 35 are set in echelon, it can further strengthen position-limiting action.
As a kind of improved embodiment, first rotating mechanism 4, the second rotating mechanism the 12, the 3rd rotate
Mechanism 20 is clockwise and anticlockwise motor.
Clockwise and anticlockwise motor is more conventional motor, and the function of rotating can be directly realized by switch.
As a kind of improved embodiment, first annular groove 36 is provided with first drive, described
The second annular groove 37 and the 3rd annular groove 38 are provided with two drives 141, Fourth Ring is provided with the 3rd drive 15
Shape groove 381, first driving belt 16 are embedded into first annular the second annular groove of box 37 of groove 36, second driving belt
17 are embedded into the 3rd annular groove 38 and fourth annular groove 381.
By the setting of first annular groove 36, the second annular groove 37, the 3rd annular groove 38, fourth annular groove 381, can make
The first driving belt 16 and the second driving belt 17 fix it is more firm.
As a kind of improved embodiment, first drive 14 is provided with first backwards to one end of inserted block 23
Articulated column 39, the both ends of the second drive 141 are respectively arranged with the second articulated column 40 and the 3rd articulated column 41, and the described 3rd passes
Driving wheel 15 sets the 4th articulated column 42, the hinge bar 19 of the first hinge bar 18 and second backwards to one end of the 3rd rotating mechanism 20
Both ends are provided with hinge hole 43, and the hinge hole 43 on first hinge bar 18 is respectively hinged at the first articulated column 39 and second
On articulated column 40, the hinge hole 43 on second hinge bar 19 is respectively hinged at the 3rd articulated column 41 and the 4th articulated column
On 42.
Pass through above-mentioned technical proposal, the articulated structure of a completion can be formed.This articulated structure is relatively simple, is easy to
Operation and processing.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
- A kind of 1. multi-functional blackboard, it is characterised in that：Including plate body (1), plate body (1) bottom is provided with mounting rail (2), institute State and screw rod (3) is provided with mounting rail (2), described screw rod (3) one end is connected with the first rotating mechanism (4), and described first rotates Mechanism (4), the interior sliding of the mounting rail (2) are connected with slipping block (5), screwed hole (6), institute are provided with the slipping block (5) State screw rod (3) to be threaded on screwed hole (6), rotate the screw rod (3), the slipping block (5) is transported in mounting rail (2) Dynamic, the part that the slipping block (5) stretches out mounting rail (2) is provided with chute (7), is slid in the chute (7) and is connected with scale (8), the scale (8) is stretched out from chute both ends, and plate body (1) is stretched in one end, and bar shaped tooth (9) is provided with the scale (8), Plate body (1) bottom is provided with rotating cylinder (10), and annular tooth (11), the annular tooth are provided with the rotating cylinder (10) (11) engaged with positioned at the bar shaped tooth (9) backwards to plate body (1) one end, the second rotating mechanism is provided with the rotating cylinder (10) (12) bevel (13) for drawing parallax on plate body (1), is hinged with the scale (8), is set on the scale (8) The first drive (14) is additionally provided with, first drive is connected with bevel (13), and drives bevel (13) to rotate, described The second drive (141) and the 3rd drive (15) are additionally provided with outside plate body (1), first drive (14) passes with second It is connected by the first driving belt (16) between driving wheel (141), is led between second transmission and the 3rd drive (15) The second driving belt (17) drive connection is crossed, the first drive center is hinged with the first hinge bar (18), and described the One hinge bar (18) is hinged on the second drive (141) center backwards to one end of the first drive (14), and described second passes The second hinge bar (19), the both ends difference of first hinge bar (18) are provided with driving wheel (141) and the 3rd drive (15) It is hinged on the center of the second drive (141) and the 3rd drive (15), is provided with the 3rd drive (15) The 3rd rotating mechanism (20) for driving the 3rd drive (15) to rotate.
- A kind of 2. multi-functional blackboard according to claim 1, it is characterised in that：Holding tank is provided with the scale (8) (21), the bevel (13) is hinged in holding tank (21), and inserting groove (22) is provided with the bevel (13), and described first passes The inserted block (23) that scale (8) is inserted on inserting groove (22) is provided through on driving wheel (14).
- A kind of 3. multi-functional blackboard according to claim 2, it is characterised in that：The first cunning is provided with the scale (8) Dynamic groove (24), is provided with the first sliding shoe (25) on first sliding groove (24), and described first sliding shoe (25) one end is from the Stretched out in one sliding groove, and first sliding shoe (25) stretching, first sliding groove one end is provided with and is inserted in plate body for chalk (1) the first chalk jack (26) of straight line is drawn on.
- A kind of 4. multi-functional blackboard according to claim 3, it is characterised in that：The second cunning is provided with the bevel (13) Dynamic groove (27), is provided with the second sliding shoe (28) on second sliding groove (27), and described the second sliding shoe (28) one end is from the Stretched out in two sliding grooves, and second sliding groove one end of the second sliding shoe (28) stretching is provided with and is inserted in plate body for chalk (1) the second chalk jack (29) of oblique line is drawn on.
- A kind of 5. multi-functional blackboard according to claim 4, it is characterised in that：First sliding shoe (25) and second slides The part that motion block (28) is located in the first sliding groove (24) and the second sliding groove (27) is provided with recessed groove (30), the recessed groove (30) spring (31) is provided with, pellet (32) is provided with the spring (31), the spring (31) keeps pellet (32) to stretch Go out recessed groove (30) outside, ammunition feed (32) insertion is provided with first sliding groove (24) and the second sliding groove (27) inwall Caulking groove (33).
- A kind of 6. multi-functional blackboard according to claim 5, it is characterised in that：Limited location is set on the slipping block (5) Block (34), it is provided with the mounting rail (2) for the embedded stopper slot (35) of limited block (34).
- A kind of 7. multi-functional blackboard according to claim 6, it is characterised in that：The limited block (34) is trapezoidal, and institute The short side for stating stopper slot (35) overlaps with slipping block (5), and the stopper slot (35) is identical with limited block (34) shape.
- A kind of 8. multi-functional blackboard according to claim 7, it is characterised in that：First rotating mechanism (4), second turn Motivation structure (12), the 3rd rotating mechanism (20) are clockwise and anticlockwise motor.
- A kind of 9. multi-functional blackboard according to claim 8, it is characterised in that：First is provided with first drive Annular groove (36), is provided with the second annular groove (37) and the 3rd annular groove (38) on second drive (141), and the described 3rd Fourth annular groove (381) is provided with drive (15), first driving belt (16) is embedded into first annular groove (36) box In second annular groove (37), second driving belt (17) is embedded into the 3rd annular groove (38) and fourth annular groove (381).
- A kind of 10. multi-functional blackboard according to claim 9, it is characterised in that：First drive (14) is backwards to slotting One end of block (23) is provided with the first articulated column (39), and the second drive (141) both ends are respectively arranged with the second articulated column (40) and the 3rd articulated column (41), the 3rd drive (15) set the 4th to be hinged backwards to one end of the 3rd rotating mechanism (20) Post (42), first hinge bar (18) and the second hinge bar (19) both ends are provided with hinge hole (43), and described first is be hinged Hinge hole (43) on bar (18) is respectively hinged on the first articulated column (39) and the second articulated column (40), second hinge Hinge hole (43) on extension bar (19) is respectively hinged on the 3rd articulated column (41) and the 4th articulated column (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710776525.8A CN107718947A (en) | 2017-08-31 | 2017-08-31 | A kind of multi-functional blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710776525.8A CN107718947A (en) | 2017-08-31 | 2017-08-31 | A kind of multi-functional blackboard |
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| Publication Number | Publication Date |
|---|---|
| CN107718947A true CN107718947A (en) | 2018-02-23 |
Family
ID=61205726
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710776525.8A Withdrawn CN107718947A (en) | 2017-08-31 | 2017-08-31 | A kind of multi-functional blackboard |
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| CN (1) | CN107718947A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130602A (en) * | 2018-09-12 | 2019-01-04 | 林哈尔 | Auxiliary tool is used in a kind of drawing of mathematical education |
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| CN205381058U (en) * | 2015-12-17 | 2016-07-13 | 王秀梅 | Multifunctional blackboard is used in teaching |
| CN205395548U (en) * | 2016-02-25 | 2016-07-27 | 黑龙江农垦管理干部学院 | Blackboard for mathematics teaching |
| CN206344602U (en) * | 2016-12-08 | 2017-07-21 | 张敬岳 | A kind of senior middle school's literal arts writing on the blackboard marking-out rule |
| CN106739677A (en) * | 2017-03-11 | 2017-05-31 | 枣庄市盘古精密机械科技有限公司 | A kind of mathematical education blackboard |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130602A (en) * | 2018-09-12 | 2019-01-04 | 林哈尔 | Auxiliary tool is used in a kind of drawing of mathematical education |
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Application publication date: 20180223 |