1. The utility model provides a teaching aid is used in english teaching, includes fixed frame (1), fixed ear (2), hinge post (3), hinge post (4) No. two, guide way (5), articulated seat (6), push rod motor (7), main blackboard (8), vice connecting rod (9) No. one, swinging arms (10), main connecting rod (11), vice connecting rod (12) No. two, main connecting rod (13) No. three, vice connecting rod (14), main connecting rod (15) No. three, clean part (16), its characterized in that: a plurality of vertical fixing lugs (2) are respectively fixed at the left end and the right end of the fixed frame (1), a horizontal hinge column (3) and a horizontal hinge column (4) are respectively fixed at the left end and the right end of the inner wall of the fixed frame (1), a vertical guide groove (5) is respectively opened at the left end and the right end of the inner wall of the fixed frame (1), a hinge seat (6) is respectively hinged on the hinge column (4), a vertical push rod motor (7) is respectively fixed at the top end of the hinge seat (6), a vertical main blackboard (8) is fixed at the middle part of the fixed frame (1), a pair connecting rod (9) is symmetrically hinged on the hinge column (3), a swinging rod (10) which inclines backwards and upwards is respectively fixed at the upper part of the pair connecting rod (9), and a main connecting rod (11) is respectively hinged at the middle part of the pair connecting rod (9), two main connecting rod (11) bottom articulates respectively has No. two vice connecting rod (12), two No. two vice connecting rod (12) middle part articulates respectively has No. two main connecting rod (13), two No. two main connecting rod (13) top articulates with two vice connecting rod (9) bottoms respectively, two No. two main connecting rod (13) bottom articulates respectively has No. three vice connecting rod (14), two No. three vice connecting rod (14) middle part articulates respectively has No. three main connecting rod (15), two No. three main connecting rod (15) top articulates with two No. two vice connecting rod (12) mutually respectively, fixed frame (1) forward-mounted has a clean part (16).

2. A teaching aid for english teaching according to claim 1, characterized in that: the cleaning part (16) comprises auxiliary blackboards (17), English writing reference lines (18), guide rails (19), auxiliary board wipers (20), rollers (21), tension springs (22), collecting grooves (23), discharge grooves (24), sliding partition plates (25), sliding seats (26) and main board wipers (27), wherein a vertical auxiliary blackboard (17) is jointly fixed between the first auxiliary connecting rod (9), the second auxiliary connecting rod (12) and the two third auxiliary connecting rods (14), a plurality of English writing reference lines (18) are sprayed at the front end of each auxiliary blackboard (17), a vertical guide rail (19) is respectively fixed at the left part and the right part of the front end of each auxiliary blackboard (17), the front end of each auxiliary blackboard (17) is respectively connected with a horizontal auxiliary board wiper (20) in a sliding mode through each guide rail (19), and the left part and the right part of each auxiliary board wiper (20) are respectively and rotatably connected with a vertical roller (21) through bearings, a vertical tension spring (22) is respectively fixed at the left part and the right part of the top end of each auxiliary blackboard eraser (20), the top end of each tension spring (22) is respectively fixed with the upper part of each blackboard, a horizontal collecting groove (23) is fixed at the bottom end of the auxiliary blackboard (17) at the bottommost part of the fixed frame (1), the collecting groove (23) bottom is fixed with a horizontal discharge groove (24) respectively in two parts about respectively, two discharge groove (24) inside sliding connection has a horizontally sliding partition (25) respectively, two sliding connection has a vertical sliding seat (26) respectively in guide way (5), each sliding seat (26) are articulated with a main connecting rod (11), No. two main connecting rod (13) and No. three main connecting rod (15) bottom respectively, two No. three main connecting rod (15) bottom is rotated through two sliding seats (26) and is connected with a horizontally main board and wipe (27).

3. A teaching aid for english teaching according to claim 1 or 2, characterized in that: two the push rod top of push rod motor (7) is articulated mutually with two swinging arms (10) tops respectively, two can drive an auxiliary connecting rod (9) and swinging arms (10) luffing motion on an articulated mast (3) after push rod motor (7) circular telegram, each auxiliary blackboard eraser (20) rear end contacts with each auxiliary blackboard (17) front end respectively, each gyro wheel (21) outer circumferential wall all the time with a main connecting rod (11), No. two main connecting rod (13) or No. three main connecting rod (15) front end contact, each auxiliary blackboard eraser (20) have the gliding trend in direction rail (19) upper portion all the time under the elastic tension effect of extension spring (22), main blackboard eraser (27) rear end contacts with main blackboard (8) front end all the time.

Background

Along with the extension of teaching activity kind, the kind of teaching aid becomes more and more, but the teaching aid that the frequency of use is the most still traditional those simple structure, convenient to use's teaching aid (for example set square, ruler, blackboard etc.). The most basic practical blackboard often plays an important role in bearing knowledge and displaying knowledge in teaching activities, but the traditional blackboard is often limited by the structure of the blackboard, so that the display area of the blackboard is fixed and single, excessive display cannot be performed, and the blackboard is cleaned in the process, not only certain physical strength is required to be consumed, but also splashes are easily generated, the influence on the health of a wiping person is caused, meanwhile, in the writing teaching activities of basic Chinese characters and primary and secondary characters, the inconvenience of writing is often caused because of no datum line, the traditional datum line fixed on the surface of the blackboard is shielded because of the surface of the blackboard, the inconvenience of displaying other knowledge is often caused because of occupying the display area, and the defects of the traditional teaching aid are highlighted.

Disclosure of Invention

The invention aims to provide a teaching aid for English teaching to solve the technical problem.

In order to achieve the purpose, the invention adopts the following technical scheme:

a teaching aid for English teaching comprises a fixing frame, fixing lugs, a first hinge column, a second hinge column, a guide groove, a hinge seat, a push rod motor, a main blackboard, a first auxiliary connecting rod, a swing rod, a first main connecting rod, a second auxiliary connecting rod, a second main connecting rod, a third auxiliary connecting rod, a third main connecting rod and a cleaning part, wherein a plurality of vertical fixing lugs are respectively fixed at the left end and the right end of the fixing frame, a horizontal first hinge column and a second hinge column are respectively fixed at the left end and the right end of the inner wall of the fixing frame, a vertical guide groove is respectively arranged at the left end and the right end of the inner wall of the fixing frame, a hinge seat is respectively hinged on the second hinge column, a vertical push rod motor is respectively fixed at the top end of the two hinge seats, a vertical main connecting rod is fixed at the middle part of the fixing frame, a first auxiliary connecting rod is symmetrically hinged on the first hinge column, a swing rod which inclines backwards and upwards is respectively fixed at the upper part of the first auxiliary connecting rod, two vice connecting rod middle part articulates respectively has a main connecting rod, two No. one main connecting rod bottom articulates respectively has No. two vice connecting rods, two No. two vice connecting rod middle part articulates respectively has No. two main connecting rods, two No. two main connecting rod top articulates with two vice connecting rod bottoms respectively, two No. two main connecting rod bottom articulates respectively has No. three vice connecting rods, two No. three vice connecting rod middle part articulates respectively has No. three main connecting rods, two No. three main connecting rod top articulates with No. two vice connecting rods mutually respectively, fixed frame forward-mounted has a clean part.

On the basis of the technical scheme, the cleaning part comprises auxiliary blackboards, English writing datum lines, guide rails, auxiliary blackboard erasers, idler wheels, tension springs, collecting tanks, discharge tanks, sliding partition plates, sliding seats and main board erasers, wherein a vertical auxiliary blackboard is jointly fixed between two auxiliary connecting rods, two auxiliary connecting rods and two auxiliary connecting rods, a plurality of English writing datum lines are sprayed at the front end of each auxiliary blackboard, a vertical guide rail is respectively fixed at the left part and the right part of the front end of each auxiliary blackboard, the front end of each auxiliary blackboard is respectively connected with a horizontal auxiliary blackboard eraser in a sliding mode through each guide rail, the left part and the right part of each auxiliary blackboard eraser are respectively and rotatably connected with a vertical idler wheel through bearings, a vertical tension spring is respectively fixed at the left part and the right part of the top end of each auxiliary blackboard eraser, the top end of each tension spring is respectively fixed with the upper part of each blackboard, a horizontal collecting tank is fixed at the bottom end of the auxiliary black, a horizontal discharge groove is respectively fixed at the left part and the right part of the bottom end of the collecting groove, a horizontal sliding clapboard is respectively connected inside the two discharge grooves in a sliding way, a vertical sliding seat is respectively connected inside the two guide grooves in a sliding way, each sliding seat is respectively hinged with the bottoms of the first main connecting rod, the second main connecting rod and the third main connecting rod, the bottoms of the two third main connecting rods are rotatably connected with a horizontal main board eraser through the two sliding seats,

on the basis of the technical scheme, the top of a push rod of the push rod motor is hinged to the tops of the two swing rods respectively, the two push rod motors can drive the first auxiliary connecting rod and the swing rods to swing up and down on the first hinge column after being electrified, the rear ends of the auxiliary blackboard erasers are in contact with the front ends of the auxiliary blackboards respectively, the outer circumferential wall of each roller is in contact with the front ends of the first main connecting rod, the second main connecting rod or the third main connecting rod all the time, each auxiliary blackboard eraser has a tendency of sliding towards the upper part of the guide rail under the action of elastic tension of the tension spring, and the rear ends of the main blackboard erasers are in contact with the front ends of the main blackboards all the time.

Compared with the prior art, the invention has the following advantages: according to the invention, through the matching of the plurality of first auxiliary connecting rods, the swinging rods, the first main connecting rod, the second auxiliary connecting rod, the second main connecting rod, the third auxiliary connecting rod and the third main connecting rod, the plurality of auxiliary blackboards can be rapidly folded and unfolded, so that a part of display area can be increased while the installation area is not excessively occupied, different knowledge can be displayed, and the auxiliary blackboards and the main blackboards can be wiped through the auxiliary blackboard eraser and the main board eraser in the process of folding and unfolding the auxiliary blackboards, so that artificial wiping can be avoided, and the injury to the bodies of wiping people can be avoided.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front structural view of the fixing frame of the present invention.

Fig. 3 is a rear structural view of the fixing frame of the present invention.

Fig. 4 is a schematic view of the installation of the main eraser of the invention.

FIG. 5 is a schematic view of the installation of the auxiliary eraser of the invention.

FIG. 6 is a schematic view of the installation of the sliding partition of the present invention.

Fig. 7 is a schematic diagram of the present invention.

In the figure: 1. fixed frame, 2, fixed ear, 3, a hinge post, 4, No. two hinge posts, 5, the guide way, 6, hinge seat, 7, push rod motor, 8, main blackboard, 9, a vice connecting rod, 10, the swinging arms, 11, a main connecting rod, 12, No. two vice connecting rods, 13, No. two main connecting rods, 14, No. three vice connecting rods, 15, No. three main connecting rods, 16, clean part, 17, vice blackboard, 18, english writing datum line, 19, the guided way, 20, vice blackboard eraser, 21, the gyro wheel, 22, extension spring, 23, the collecting vat, 24, the discharge chute, 25, the sliding partition board, 26, the slide seat, 27, the main blackboard eraser.

Detailed Description

The invention is explained in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1-7, a teaching aid for english teaching comprises a fixing frame 1, a fixing lug 2, a first hinge post 3, a second hinge post 4, a guide groove 5, a hinge seat 6, a push rod motor 7, a main blackboard 8, a first auxiliary connecting rod 9, a swing rod 10, a first main connecting rod 11, a second auxiliary connecting rod 12, a second main connecting rod 13, a third auxiliary connecting rod 14, a third main connecting rod 15 and a cleaning part 16, wherein the left end and the right end of the fixing frame 1 are respectively fixed with a plurality of vertical fixing lugs 2, the fixing lugs 2 can fix the fixing frame 1 on the wall through bolts, the left end and the right end of the inner wall of the fixing frame 1 are respectively fixed with a horizontal first hinge post 3 and a horizontal second hinge post 4, the left end and the right end of the inner wall of the fixing frame 1 are respectively provided with a vertical guide groove 5, the inner walls of the two guide grooves 5 are processed to be smooth and burr-free, the two hinge seats 6 are respectively hinged on the second hinge post 4, a vertical push rod motor 7 is respectively fixed at the top ends of the two hinge seats 6, a vertical main blackboard 8 is fixed at the middle part of the fixing frame 1, the main blackboard 8 plays a bearing role of writing, so a white board can also be used, a first auxiliary connecting rod 9 is symmetrically hinged on the first hinge column 3, a swinging rod 10 which inclines backwards and upwards is respectively fixed at the upper part of the first auxiliary connecting rod 9, a first main connecting rod 11 is respectively hinged at the middle part of the first auxiliary connecting rod 9, a second auxiliary connecting rod 12 is respectively hinged at the bottom part of the first main connecting rod 11, a second main connecting rod 13 is respectively hinged at the middle part of the second auxiliary connecting rod 12, the top parts of the second main connecting rods 13 are respectively hinged with the bottom parts of the first auxiliary connecting rods 9, a third auxiliary connecting rod 14 is respectively hinged at the bottom part of the second main connecting rod 13, and a third main connecting rod 15 is respectively hinged at the middle part of the third auxiliary connecting rod 14, the top of the third main connecting rod 15 is hinged with the second auxiliary connecting rod 12, and a cleaning part 16 is installed at the front part of the fixed frame 1.

On the basis of the technical scheme, the cleaning part 16 comprises auxiliary blackboards 17, English writing reference lines 18, guide rails 19, auxiliary board wipers 20, rollers 21, tension springs 22, collecting grooves 23, discharge grooves 24, sliding partition plates 25, sliding seats 26 and main board wipers 27, wherein a vertical auxiliary blackboard 17 is jointly fixed between the first auxiliary connecting rod 9, the second auxiliary connecting rod 12 and the third auxiliary connecting rod 14, each auxiliary blackboard 17 plays a writing bearing role, so that a white board can also be used, a plurality of English writing reference lines 18 are sprayed at the front end of each auxiliary blackboard 17, the English writing reference lines 18 are used for providing reference for English writing, a vertical guide rail 19 is respectively fixed at the left part and the right part of the front end of each auxiliary blackboard 17, the front end of each auxiliary blackboard 17 is respectively connected with a horizontal auxiliary board wiper 20 in a sliding mode through each guide rail 19, and in order to ensure that the guide rails 19 are in good sliding connection with the auxiliary board wipers 20, should guarantee its contact part smooth and burr-free, each two parts of the left and right sides of each vice blackboard eraser 20 are respectively connected with a vertical gyro wheel 21 through the bearing rotation, each two parts of the left and right sides of the top of each vice blackboard eraser 20 are respectively fixed with a vertical extension spring 22, each extension spring 22 top is respectively fixed with each blackboard upper portion, the bottom of the vice blackboard 17 of the bottom of the fixed frame 1 is fixed with a horizontal collecting groove 23, the collecting groove 23 is mainly used for collecting chalk powder, the two parts of the left and right sides of the bottom of the collecting groove 23 are respectively fixed with a horizontal discharge groove 24, two discharge grooves 24 are respectively connected with a horizontal sliding partition plate 25 in a sliding way, two vertical sliding seats 26 are respectively connected in the guide groove 5 in a sliding way, in order to guarantee the sliding connection of the sliding seats 26 and the guide groove 5 well, should guarantee its contact part smooth and burr-free, each sliding seat 26 respectively with a number of main connecting rods 11, The second main connecting rod 13 is hinged with the bottom of the third main connecting rod 15, the bottom of the third main connecting rod 15 is rotatably connected with a horizontal main board eraser 27 through two sliding seats 26,

on the basis of the technical scheme, the top of the push rod motor 7 is hinged to the tops of the two swing rods 10 respectively, the push rod motor 7 can drive the first auxiliary connecting rod 9 and the swing rods 10 to swing up and down on the first hinge column 3 after being electrified, the rear end of each auxiliary eraser 20 is contacted with the front end of each auxiliary blackboard 17 respectively, the outer circumferential wall of each roller 21 is contacted with the front ends of the first main connecting rod 11, the second main connecting rod 13 or the third main connecting rod 15 all the time, each auxiliary eraser 20 has a tendency of sliding towards the upper part of the guide rail 19 under the elastic tension action of the tension spring 22, and the rear end of the main eraser 27 is contacted with the front end of the main blackboard 8 all the time.

The working principle of the invention is as follows: the device is fixed inside a classroom through the fixing lug 2, English can be written by taking an English writing datum line 18 as a benchmark, after writing is finished or when English writing is not needed, only two push rod motors 7 are controlled to act, so that push rods in the two push rod motors 7 are controlled to contract, a first auxiliary connecting rod 9, a swinging rod 10, a first main connecting rod 11, a second auxiliary connecting rod 12, a second main connecting rod 13, a third auxiliary connecting rod 14 and a third main connecting rod 15 are controlled to contract, so that each auxiliary blackboard 17 is stored, then the main blackboard 8 is exposed, so that teaching can be written again, if English writing is needed again, only two push rod motors 7 are controlled to act reversely, and the auxiliary blackboard 17 and the main blackboard 8 can be wiped through the auxiliary blackboard eraser 20 and the main blackboard eraser 27 in the process of storing and unfolding the auxiliary blackboard 17, thereby can avoid artificial cleaning, avoid then the injury to cleaning the people's health, and the exhibition through vice blackboard 17 has not only increased the show area, but also conveniently carries out the show of multiple different knowledge, is of value to going on of teaching activity more.

The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that variations, modifications, substitutions and alterations can be made in the embodiment without departing from the principles and spirit of the invention.