CN109080319A

CN109080319A - A kind of novel magnetic clipboard

Info

Publication number: CN109080319A
Application number: CN201810990391.4A
Authority: CN
Inventors: 屠雪芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-08-28
Filing date: 2018-08-28
Publication date: 2018-12-25

Abstract

A kind of novel magnetic clipboard of the invention, including apparatus main body, it is set to the intracorporal mounting device of described device master, it is set to the intracorporal safety device of described device master and is set to the intracorporal fixed device of described device master, the mounting device includes being set to the intracorporal first rotation chamber of described device master, first motor is fixedly installed in inner wall on the downside of the first rotation chamber, first motor upper end power is connected with first rotating shaft, the first rotating shaft upper end is fixedly connected with rotatable first gear, the first gear left end engagement is connected with rotatable second gear, the second gear upper end engagement is connected with rotatable third gear, the second drive cavity is provided in the first rotation chamber upper inside walls；What the present apparatus can automate is mounted on blackboard on wall, and the fixation that can be consolidated is on the wall, will not fall because pullling, and along with its is ingenious in design, cost is relatively low, easy to operate using simple.

Description

A kind of novel magnetic clipboard

Technical field

The present invention relates to technical field of smart office, specifically a kind of novel magnetic clipboard.

Background technique

Blackboard uses extensively as one of the necessary article on modern age classroom in China, but these blackboards are all more rigid mostly Plate is fixed on metope, and transportable blackboard is arbitrarily to hang very much again, security risk therein as one can imagine, this sets The automation clipboard very good solution of meter this problem, what it can be automated is mounted on blackboard on wall, and can Firm fixation on the wall, will not be fallen because pullling, and along with its is ingenious in design, cost is relatively low, easy to operate using simple, So design a kind of novel magnetic clipboard it is really necessary to.

Summary of the invention

Technical problem to be solved by the invention is to provide a kind of novel magnetic clipboards, are able to solve above-mentioned present skill The problems in art.

The present invention is achieved through the following technical solutions: a kind of novel magnetic clipboard of the invention, including device Main body is set to the intracorporal mounting device of described device master, is set to the intracorporal safety device of described device master and is set to The intracorporal fixed device of described device master, the mounting device include being set to the intracorporal first rotation chamber of described device master, institute It states and is fixedly installed first motor in inner wall on the downside of the first rotation chamber, first motor upper end power is connected with first turn Axis, the first rotating shaft upper end are fixedly connected with rotatable first gear, and the first gear left end engagement is connected with Rotatable second gear, the second gear upper end engagement are connected with rotatable third gear, first rotation It is provided with the second drive cavity in chamber upper inside walls, is provided with the first working chamber, the third gear on the upside of second drive cavity It is fixedly connected with upper end at axle center to extend in first working chamber and rotatable first screw rod, under first working chamber Side side position of keeping right is provided with and communicated with the first groove that Open Side Down, and opening is provided in the first groove inner left wall to the right The second groove, be provided on the right side of second drive cavity lower end extend to it is in second groove and second turn rotatable Axis, second shaft lower end are fixedly connected with rotatable 4th gear, are provided in inner wall on the right side of first working chamber Opening third groove to the right is fixedly installed the second motor, second motor upper end in inner wall on the downside of the third groove Power is connected with the second screw rod, is threadedly engaged on second screw rod and is connected with first sliding block that can slide up and down, described It is threadedly engaged on first screw rod and is connected with second sliding block that can slide up and down, first sliding block lower end is fixedly connected with lower end and prolongs The first operation block in first groove is extended to, first operation block left end is provided with the 4th groove of opening to the left, institute State the 5th gear for being provided with and being meshed in the 4th groove with the 4th gear, setting in the 4th groove upper inside walls Have third drive cavity, be fixedly connected at the 5th gear axis upper end extend to it is in the third drive cavity and rotatable Third shaft, third shaft upper end are fixedly connected with rotatable 6th gear, the 6th gear right end engagement cooperation It is connected with rotatable 7th gear, is provided with symmetrical 4th drive cavity, institute in inner wall on the right side of the third drive cavity It states in the 4th drive cavity for being fixedly connected at the 7th gear axis and extending to right side and rotatable 4th shaft, it is described The eighth gear being fixedly connected in the 4th shaft, the eighth gear lower end engagement cooperation are provided in 4th drive cavity It is connected with rotatable 9th gear, is fixedly connected with rotatable 5th shaft at the 9th gear axis, the described 4th It is provided with the first thread groove that Open Side Down in inner wall on the downside of drive cavity, is provided with its company of being threadedly engaged in first thread groove It connects and rotatable sleeve that upper end is fixedly connected with the 5th shaft, is provided with the second spiral shell that Open Side Down in the sleeve Groove is provided on the downside of second thread groove and runs through up and down and first through hole identical with its openings of sizes, second spiral shell Groove screw-internal thread fit, which is connected with, to be slided up and down and lower end extends to third sliding block in the first through hole, and described first is logical The the first opposite guide runner that is open is symmetrically arranged in the left and right sides inner wall of hole, described third sliding block or so end is fixedly connected with extension The first slider guide in first guide runner, third sliding block lower end is fixedly connected with Electric drill-bit.

The safety device includes being set to connection setting on the right side of the first rotation chamber as a preferred technical solution, The 5th groove that Open Side Down, the 5th groove upside are provided with the Four-slider that can be horizontally slipped, the second gear axis The 6th shaft that right end is fixedly connected with the Four-slider rotary type, the 5th groove upper inside walls are fixedly connected at the heart It is inside provided with the second guide runner that Open Side Down, Four-slider upper end, which is fixedly connected with, to be extended in second guide runner The second slider guide, the second slider guide right end is fixedly connected with second back-moving spring, is provided on the downside of the Four-slider Can slide up and down and the 5th sliding block that upper end can be matched with its lower end, be provided in inner wall on the right side of the 5th groove opening to Left third guide runner, the 5th sliding block right end are fixedly connected with the third slider guide extended in the third guide runner, Third slider guide lower end is fixedly connected with third reset spring, is symmetrically arranged with out in the inner wall of side before and after the 5th groove The 4th opposite guide runner of mouth, the 5th sliding block front and back end is fixedly connected with the 4th slider guide extended in described, described 4th slider guide lower end is fixedly connected with the 4th reset spring, and described device body front end, which is rotatably assorted, to be connected with it symmetrically First rotating block, first rotating block lower end and symmetrical 6th groove of the 5th groove, the interior setting of the 6th groove Can slide up and down the 6th sliding block, be symmetrically arranged with the 5th opposite slide guide that is open before and after the 6th groove in the inner wall of side Slot, the 6th sliding block front and back end are fixedly connected with the 5th slider guide extended in the 5th guide runner, and the described 5th leads Sliding block lower end is fixedly connected with the 5th reset spring, and perforative threaded hole up and down is provided in the 6th groove upper inside walls, The threaded hole screw-internal thread fit, which is connected with, can slide up and down and extend to extraneous threaded rod, and the threaded rod tip screw thread is matched Conjunction is connected with bolt.

Described device main body upper end and first rotating block upper end are fixedly connected with black as a preferred technical solution, Plate, is fixedly installed magnetic force block in the downside inner wall, the word that can write with chalk, described to allow the blackboard with magnet Wiping adsorbs.

The fixed device includes the first fixation that described device main body right end is fixedly connected as a preferred technical solution, Block, first rotating block left end are fixedly connected with fixed with symmetrical second fixed block of first fixed block, described second Block lower end is fixedly connected with the 7th sliding block that there is tooth form in rear end, and it is the 7th recessed to be provided with that Open Side Down for first lower end of fixing block Slot, eightth groove of the setting with opening backward in the 7th groove front inner wall, being provided in the 8th groove can be advancing slip The 8th sliding block that dynamic and rear end is matched with the 7th sliding block rear end, the 8th sliding block upper and lower sides are provided with the first reset dress It sets, symmetrical above and below in the 8th groove front inner wall to be provided with the first rotation chamber, first rotation is intracavitary to be provided with first The first rotation chamber rear side of reel, upside is provided with the 9th groove of opening backward, is provided in the 9th groove 9th sliding block capable of sliding back and forth, the 8th slip front are fixedly connected with excessively described first reel of winding and are fixedly connected In the first lead of the 9th slip front, when device closes described in the 7th sliding block can enter the 7th groove in and its Tooth form open it can not with credit union with the 8th sliding block, and the 9th sliding block need to be only pulled when needing to open.

The beneficial effects of the present invention are: the configuration of the present invention is simple, easy to operate, the present apparatus is in use, the first rotation of rotation Block makes the 6th sliding block be detached from the 5th groove, and the 5th sliding block resets under the action of the spring with Four-slider, second gear and third Gear and first gear engagement take out threaded rod with hand rotating bolt and place it on wall and use hand flicking, it is electric to open first Machine, first motor drive first rotating shaft rotation, and first rotating shaft drives first gear rotation, and first gear drives second gear to turn Dynamic, second gear drives the rotation of third gear, and third gear drives the rotation of the first screw rod, and the first screw rod drives the second shaft to turn Dynamic, the second shaft drives the rotation of the 4th gear, and the rotation of the first screw rod makes the second sliding block slide downward, and the second sliding block drives the first work Make block slide downward, when the second sliding block slides on the internal screw thread of the first screw rod, the second sliding block stops sliding and the 5th gear It is engaged with the 4th gear, the 4th gear drives the rotation of the 5th gear, and the 5th gear drives the rotation of third shaft, and third shaft drives The rotation of 6th gear, the 6th gear drive the rotation of the 7th gear, and the 7th gear drives the rotation of the 4th shaft, and the 4th shaft drives the The rotation of octadentate wheel, eighth gear drive the rotation of the 9th gear, and the 9th gear drives the rotation of the 5th shaft, the 5th shaft band moving sleeve Rotation, sleeve drive third sliding block slide downward, and Electric drill-bit starting unclamps hand until third sliding block pierces within the walls completely, this Device installs, and when if desired packing up the present apparatus, opens first motor reversion, first motor control third sliding block skids off wall Body opens the second motor when third sliding block will reset completely, and the second motor drives the rotation of the second screw rod, the second screw rod band Second sliding block ejection inner bearing is simultaneously made its upward sliding by dynamic first sliding block upward sliding, after the second sliding block starts sliding, the Two motor reversals, the second motor is closed after resetting the first sliding block, closes first motor after the second sliding block resets completely, will First rotating block rotation reset, when if desired reusing, only need to repeat the above steps, the present apparatus can automate general Blackboard is mounted on wall, and the fixation that can be consolidated is on the wall, will not be fallen because pullling.

Detailed description of the invention

The present invention is described in detail by following specific embodiments and drawings for ease of explanation,.

Fig. 1 is a kind of schematic diagram of internal structure of novel magnetic clipboard of the invention；

Fig. 2 is the cross-sectional view in direction " A-A " in Fig. 1.

Specific embodiment

As Figure 1-Figure 2, a kind of novel magnetic clipboard of the invention, including apparatus main body 10, it is set to the dress It sets the mounting device in main body 10, the safety device being set in described device main body 10 and is set to described device main body 10 Interior fixation device, the mounting device include be set in described device main body 10 first rotation chamber 11, described first turn It is fixedly installed first motor 12 in dynamic 11 downside inner wall of chamber, the 12 upper end power of first motor is connected with first rotating shaft 13,13 upper end of first rotating shaft is fixedly connected with rotatable first gear 14,14 left end of the first gear engagement cooperation It is connected with rotatable second gear 15,15 upper end of the second gear engagement is connected with rotatable third gear 16, It is provided with the second drive cavity 17 in first rotation, 11 upper inside walls of chamber, is provided with the first work on the upside of second drive cavity 17 Make chamber 18, upper end is fixedly connected at 16 axle center of third gear and is extended in first working chamber 18 and rotatable the One screw rod 19, side position of keeping right on the downside of first working chamber 18 are provided with and communicated with the first groove 20 that Open Side Down, and described It is provided with the second groove 21 of opening to the right in one groove, 20 inner left wall, is provided with lower end on the right side of second drive cavity 17 and prolongs Interior and rotatable second shaft 22 of second groove 21 is extended to, 22 lower end of the second shaft is fixedly connected with rotatably 4th gear 23 is provided with the third groove 24 of opening to the right, the third groove in first working chamber, the 18 right side inner wall The second motor 25 is fixedly installed in 24 downside inner walls, the 25 upper end power of the second motor is connected with the second screw rod 26, It is threadedly engaged on second screw rod 26 and is connected with first sliding block 27 that can slide up and down, be threadedly engaged on first screw rod 19 It is connected with second sliding block 28 that can slide up and down, 27 lower end of the first sliding block is fixedly connected with lower end, and to extend to described first recessed The first operation block 29 in slot 20,29 left end of the first operation block are provided with opening the 4th groove 30 to the left, and the described 4th It is provided with the 5th gear 31 that can be meshed with the 4th gear 23 in groove 30, is set in 30 upper inside walls of the 4th groove Be equipped with third drive cavity 32, be fixedly connected at 31 axle center of the 5th gear upper end extend in the third drive cavity 32 and Rotatable third shaft 33,33 upper end of third shaft is fixedly connected with rotatable 6th gear 34, the 6th tooth It takes turns the engagement of 34 right ends and is connected with rotatable 7th gear 35, left and right is provided in the 32 right side inner wall of third drive cavity Symmetrical 4th drive cavity 36 is fixedly connected with the 4th drive cavity 36 for extending to right side at 35 axle center of the 7th gear Interior and rotatable 4th shaft 37 is provided be fixedly connected in the 4th shaft 37 in the 4th drive cavity 36 Octadentate wheel 38,38 lower end of the eighth gear engagement are connected with rotatable 9th gear 39,39 axis of the 9th gear It is fixedly connected with rotatable 5th shaft 40 at the heart, that Open Side Down is provided in the 36 downside inner wall of the 4th drive cavity One thread groove 41 is provided with it in first thread groove 41 and is threadedly engaged connection and upper end and the 5th shaft 40 is fixed connects The rotatable sleeve 42 connect is provided with the second thread groove 43 that Open Side Down, second thread groove 43 in the sleeve 42 Downside is provided with to be run through and first through hole 44 identical with its openings of sizes up and down, and 43 screw-internal thread fit of the second thread groove connects Being connected to can slide up and down and lower end extends to third sliding block 45 in the first through hole 44, in 44 left and right sides of first through hole Be symmetrically arranged with opposite the first guide runner 46 of being open in wall, the end of third sliding block 45 or so be fixedly connected with extend to it is described The first slider guide 47 in first guide runner 46,45 lower end of third sliding block are fixedly connected with Electric drill-bit 48.

Valuably, the safety device include be set to it is described first rotation chamber 11 on the right side of connection setting Open Side Down 5th groove 49 is provided with the Four-slider 50 that can be horizontally slipped, 15 axle center of second gear on the upside of the 5th groove 49 Place is fixedly connected with the 6th shaft 51 that right end is fixedly connected with 50 rotary type of Four-slider, 49 upside of the 5th groove The second guide runner 52 that Open Side Down is provided in inner wall, 50 upper end of Four-slider, which is fixedly connected with, extends to described second The second slider guide 53 in guide runner 52,53 right end of the second slider guide are fixedly connected with second back-moving spring 54, and described Being provided on the downside of Four-slider 50 can slide up and down and the 5th sliding block 55 that upper end can be matched with its lower end, the 5th groove 49 Be provided with opening third guide runner 56 to the left in the inner wall of right side, 55 right end of the 5th sliding block be fixedly connected with extend to it is described Third slider guide 57 in third guide runner 56,57 lower end of third slider guide are fixedly connected with third reset spring 58, institute It states and is symmetrically arranged with the 4th opposite guide runner 59 that is open, 55 front and back end of the 5th sliding block in 49 front and back side inner wall of the 5th groove It is fixedly connected with the 4th slider guide 60 extended in described 59,60 lower end of the 4th slider guide is fixedly connected with the 4th reset Spring 61,10 front end of described device main body, which is rotatably assorted, to be connected with and its symmetrical first rotating block 62, first rotating block 62 lower ends and symmetrical 6th groove 63 of the 5th groove 49, being provided in the 6th groove 63 can slide up and down the 6th Sliding block 64 is symmetrically arranged with the 5th opposite guide runner 65 that is open in the 63 front and back side inner wall of the 6th groove, and the described 6th is sliding 64 front and back end of block is fixedly connected with the 5th slider guide 66 extended in the 5th guide runner 65, under the 5th slider guide 66 End is fixedly connected with the 5th reset spring 67, and perforative threaded hole 68 up and down is provided in 63 upper inside walls of the 6th groove, 68 screw-internal thread fit of threaded hole, which is connected with, can slide up and down and extend to extraneous threaded rod 69,69 top of threaded rod It is threadedly engaged and is connected with bolt 70.

Valuably, 10 upper end of described device main body and 62 upper end of the first rotating block are fixedly connected with blackboard 71, institute It states and is fixedly installed magnetic force block 72 in 71 downside inner walls, described 71 can write with chalk word, and described 72 can allow with magnet Blackboard eraser adsorbs.

Valuably, the fixed device includes the first fixed block 75 that 10 right end of described device main body is fixedly connected, described First rotating block, 62 left end is fixedly connected with and symmetrical second fixed block 76 of first fixed block 75, second fixed block 76 lower ends are fixedly connected with the 7th sliding block 78 that there is tooth form in rear end, and 75 lower end of the first fixed block is provided with that Open Side Down Seven grooves 77, eightth groove 82 of the setting with opening backward in 77 front inner wall of the 7th groove, in the 8th groove 82 Be provided with can the 8th sliding block 83 that is matched with 78 rear end of the 7th sliding block of front slide and rear end, about 83 the 8th sliding block Side is provided with the first resetting apparatus 84, symmetrical above and below in 82 front inner wall of the 8th groove to be provided with the first rotation chamber 85, institute It states and is provided with the first reel 86 in the first rotation chamber 85, be provided with and be open backward on rear side of the first rotation chamber 85 of upside 9th groove 87, the 9th sliding block 88 capable of sliding back and forth is provided in the 9th groove 87, and 83 front end of the 8th sliding block is solid Surely it is connected with excessively described first reel 86 of winding and is fixedly connected on the first lead 89 of 88 front end of the 9th sliding block, work as dress 7th sliding block 78 described in setting when closing can enter in the 7th groove 77 and its tooth form makes with the 8th sliding block 83 with credit union It can not be opened, and the 9th sliding block 88 need to be only pulled when needing to open.

When original state, described device main body 10 and first rotating block 62 are in folded state, the 6th sliding block 64 stick into the 5th groove 49, and the 5th sliding block 55 is pushed up to the 49 upside extreme position of the 5th groove, and described Five sliding blocks 55 push up the Four-slider 50 to left side extreme position, the second gear 15 and the first gear 14 and institute It states third gear 16 and is in non-meshing state.

The present apparatus makes the 6th sliding block 64 be detached from the 5th groove 49 in use, the first rotating block 62 of rotation, the 5th sliding block 55 with Four-slider 50 resets under the action of the spring, and second gear 15 is engaged with third gear 16 and first gear 14, is turned with hand Dynamic bolt 70 takes out threaded rod 69 and places it on wall and use hand flicking, opens first motor 12, the drive of first motor 12 first Shaft 13 rotates, and first rotating shaft 13 drives first gear 14 to rotate, and first gear 14 drives second gear 15 to rotate, second gear 15 drive third gear 16 to rotate, and third gear 16 drives the rotation of the first screw rod 19, and the first screw rod 19 drives 22 turns of the second shaft Dynamic, the second shaft 22 drives the rotation of the 4th gear 23, and the rotation of the first screw rod 19 makes 28 slide downward of the second sliding block, the second sliding block 28 29 slide downward of the first operation block is driven, when the second sliding block 28 slides on the internal screw thread of the first screw rod 19, the second sliding block 28 Stop sliding and the 5th gear 31 is engaged with the 4th gear 23, the 4th gear 23 drives the rotation of the 5th gear 31, the 5th gear 31 Third shaft 33 is driven to rotate, third shaft 33 drives the rotation of the 6th gear 34, and the 6th gear 34 drives the rotation of the 7th gear 35, 7th gear 35 drives the rotation of the 4th shaft 37, and the 4th shaft 37 drives eighth gear 38 to rotate, and eighth gear 38 drives the 9th Gear 39 rotates, and the 9th gear 39 drives the rotation of the 5th shaft 40, and the 5th shaft 40 is rotated with moving sleeve 42, and sleeve 42 drives the Three sliding blocks, 45 slide downward, Electric drill-bit 48 start, until third sliding block 45 pierces within the walls completely, unclamp hand, present apparatus installation It finishing, when if desired packing up the present apparatus, opens first motor 12 and invert, first motor 12 controls third sliding block 45 and skids off wall, When third sliding block 45 will reset completely, the second motor 25 is opened, the second motor 25 drives the rotation of the second screw rod 26, the second spiral shell Bar 26 drives 27 upward sliding of the first sliding block and the second sliding block 28 ejection inner bearing is made its upward sliding, when the second sliding block 28 is opened Begin after sliding, the reversion of the second motor 25, second motor 25 is closed after resetting the first sliding block 27, when the second sliding block 28 is completely multiple First motor 12 is closed behind position, the first rotating block 62 is rotated and is resetted, and when if desired reusing, need to only be repeated the above steps i.e. It can.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, of the invention Protection scope should be determined by the scope of protection defined in the claims.

Claims

1. a kind of novel magnetic clipboard of the invention, including apparatus main body, be set to the intracorporal mounting device of described device master, It is set to the intracorporal safety device of described device master and is set to the intracorporal fixed device of described device master, it is characterised in that: The mounting device includes being set to the intracorporal first rotation chamber of described device master, fixed in inner wall on the downside of the first rotation chamber It is provided with first motor, first motor upper end power is connected with first rotating shaft, and the first rotating shaft upper end is fixed to be connected It is connected to rotatable first gear, the first gear left end, which is engaged, is connected with rotatable second gear, and described second The engagement of gear upper end is connected with rotatable third gear, is provided with the second transmission in the first rotation chamber upper inside walls Chamber, the second drive cavity upside are provided with the first working chamber, are fixedly connected with upper end at the third gear axis and extend to In first working chamber and rotatable first screw rod, side position of keeping right on the downside of first working chamber is provided with and communicated with opening The first downward groove is provided with the second groove of opening to the right, second drive cavity in the first groove inner left wall Right side is provided with lower end and extends in second groove and rotatable second shaft, and second shaft lower end is fixedly connected There is rotatable 4th gear, is provided with the third groove of opening to the right, the third on the right side of first working chamber in inner wall It is fixedly installed the second motor in inner wall on the downside of groove, second motor upper end power is connected with the second screw rod, described Be threadedly engaged on second screw rod and be connected with first sliding block that can slide up and down, be threadedly engaged on first screw rod be connected with can on Second sliding block of lower slider, first sliding block lower end are fixedly connected with the first work that lower end extends in first groove Block, first operation block left end are provided with opening the 4th groove to the left, and being provided in the 4th groove can be with described the The 5th gear that four gears are meshed is provided with third drive cavity, the 5th gear shaft in the 4th groove upper inside walls It is fixedly connected with upper end at the heart and extends to the interior and rotatable third shaft of the third drive cavity, third shaft upper end is solid Surely it is connected with rotatable 6th gear, the 6th gear right end engagement is connected with rotatable 7th gear, described It is provided with symmetrical 4th drive cavity in inner wall on the right side of third drive cavity, is fixedly connected with and prolongs at the 7th gear axis It extends in the 4th drive cavity on right side and rotatable 4th shaft, is provided with and is fixedly connected in the 4th drive cavity Eighth gear in 4th shaft, the eighth gear lower end engagement is connected with rotatable 9th gear, described Be fixedly connected with rotatable 5th shaft at 9th gear axis, be provided in inner wall on the downside of the 4th drive cavity opening to Under the first thread groove, it is provided in first thread groove and is threadedly engaged connection and upper end and the 5th shaft is fixed connects The rotatable sleeve connect is provided with the second thread groove that Open Side Down, setting on the downside of second thread groove in the sleeve Have and run through and first through hole identical with its openings of sizes up and down, the second thread groove screw-internal thread fit, which is connected with, can go up downslide Dynamic and lower end extends to the third sliding block in the first through hole, is symmetrically arranged with opening in the first through hole left and right sides inner wall The first opposite guide runner, described third sliding block or so end are fixedly connected with the first slide guide extended in first guide runner Block, third sliding block lower end are fixedly connected with Electric drill-bit.

2. a kind of novel magnetic clipboard according to claim, it is characterised in that: the safety device includes being set to Connection setting the 5th groove that Open Side Down on the right side of the first rotation chamber, the 5th groove upside, which is provided with, can control cunning Dynamic Four-slider is fixedly connected with right end is fixedly connected with the Four-slider rotary type at the second gear axle center Six shafts are provided with the second guide runner that Open Side Down in the 5th groove upper inside walls, and Four-slider upper end is fixed It is connected with the second slider guide extended in second guide runner, the second slider guide right end is fixedly connected with the second reset Spring, being provided on the downside of the Four-slider can slide up and down and the 5th sliding block that upper end can be matched with its lower end, and described the The third guide runner of opening to the left is provided on the right side of five grooves in inner wall, the 5th sliding block right end, which is fixedly connected with, extends to institute State the third slider guide in third guide runner, third slider guide lower end is fixedly connected with third reset spring, and the described 5th The 4th opposite guide runner that is open is symmetrically arranged with before and after groove in the inner wall of side, the 5th sliding block front and back end, which is fixedly connected with, prolongs The 4th slider guide in described is extended to, the 4th slider guide lower end is fixedly connected with the 4th reset spring, described device main body Front end be rotatably assorted be connected with its symmetrical first rotating block, first rotating block lower end and the 5th groove are symmetrical 6th groove is provided with the 6th sliding block that can slide up and down in the 6th groove, right in the inner wall of side before and after the 6th groove Claim to be provided with the 5th opposite guide runner that is open, the 6th sliding block front and back end, which is fixedly connected with, extends to the 5th guide runner The 5th interior slider guide, the 5th slider guide lower end are fixedly connected with the 5th reset spring, the 6th groove upper inside walls It is inside provided with perforative threaded hole up and down, the threaded hole screw-internal thread fit, which is connected with, can slide up and down and extend to extraneous spiral shell Rasp bar, the threaded rod tip, which is threadedly engaged, is connected with bolt.

3. a kind of novel magnetic clipboard according to claim, it is characterised in that: described device main body upper end and institute It states the first rotating block upper end and is fixedly connected with blackboard, magnetic force block is fixedly installed in the downside inner wall, it is described to use chalk It writes, it is described that the blackboard eraser with magnet can be allowed to adsorb.

4. a kind of novel magnetic clipboard according to claim, it is characterised in that: the fixed device includes the dress The first fixed block that main body right end is fixedly connected is set, first rotating block left end is fixedly connected with and first fixed block pair The second fixed block claimed, second lower end of fixing block are fixedly connected with the 7th sliding block that there is tooth form in rear end, and described first is fixed Block lower end is provided with the 7th groove that Open Side Down, setting and backward the 8th recessed of being open in the 7th groove front inner wall Slot, be provided in the 8th groove can the 8th sliding block that is matched with the 7th sliding block rear end of front slide and rear end, it is described 8th sliding block upper and lower sides are provided with the first resetting apparatus, symmetrical above and below in the 8th groove front inner wall to be provided with the first rotation Chamber, first rotation is intracavitary to be provided with the first reel, is provided with and is open backward on rear side of the first rotation chamber of upside 9th groove is provided with the 9th sliding block capable of sliding back and forth in the 9th groove, and the 8th slip front is fixedly connected with Excessively described first reel of winding and the first lead for being fixedly connected on the 9th slip front, when device closes described in Seven sliding blocks, which can enter in the 7th groove, and its tooth form and the 8th sliding block match credit union open it can not, when needing to open When need to only pull the 9th sliding block.