CN114987090A

CN114987090A - English teaching portable writes device

Info

Publication number: CN114987090A
Application number: CN202210834229.XA
Authority: CN
Inventors: 李照; 王静; 郭春芳
Original assignee: Individual
Current assignee: Yantai Vocational College
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-09-02
Anticipated expiration: 2042-07-14
Also published as: CN114987090B

Abstract

The invention relates to the technical field of teaching equipment, in particular to a portable writing device for English teaching, which comprises a supporting seat, an angle adjusting component, a main writing board, a stretching component, a limiting component and a cleaning component, wherein the supporting seat is placed on the ground and comprises a base and vertical boards which are arranged in bilateral symmetry, the angle adjusting component is installed on the upper portion of the supporting seat, the main writing board is fixedly connected to the front end face of the angle adjusting component, the main writing board is of an Contraband-shaped structure, the upper end face of the lower horizontal section of the main writing board is connected with the stretching component in a bilateral symmetry sliding mode, the limiting component is installed on the upper end face of the upper horizontal section of the main writing board, and the cleaning component is fixedly connected to the front end face of the vertical section of the main writing board. The problem that the writing area of the board surface of the writing equipment is not enough and the like can be often met by the writing equipment. The invention is provided with the extension component, the sliding plate can rotate the rotating head to enable the lead screw to drive the moving block to extend the auxiliary writing board forwards, and therefore, the effect of board surface extension is achieved.

Description

English teaching portable writes device

Technical Field

The invention relates to the technical field of teaching equipment, in particular to a portable writing device for English teaching.

Background

English teaching refers to a process of teaching english to a person whose english is not the first language, and there are teaching systems similar to english quick shift in society in addition to classroom english teaching in compulsory education, and english teaching is generally performed using a writing board in these english teaching processes.

The current English teaching writing equipment has the following problems: one, english teaching in-process can need write a large amount of writing on the blackboard usually and improve the teaching effect, and when need write the long difficult sentence of a plurality of english on writing equipment, often can meet the writing equipment face and write regional not enough problem, can only reduce the content of writing of face this moment, has reduced teaching efficiency.

Two, writing device is writing and erasing the in-process constantly, can leave the writing seal of being difficult to erase usually on writing device's the face, and remaining writing seal can influence the content of writing on the follow-up writing device, leads to learning english personnel's misidentification to the effect of english teaching has been reduced.

Disclosure of Invention

The technical problem to be solved is as follows: the portable writing device for English teaching provided by the invention can solve the problems.

The technical scheme is as follows: the utility model provides a device is write to english teaching portable, includes supporting seat, angle modulation subassembly, main clipboard, extends subassembly, spacing subassembly and clean subassembly, the supporting seat is placed subaerial, and the supporting seat has the vertical board that base and bilateral symmetry set up to constitute, and the angle modulation subassembly is installed on supporting seat upper portion, and terminal surface fixedly connected with main clipboard before the angle modulation subassembly, main clipboard is Contraband type structure, and main clipboard is located below horizontal segment up end bilateral symmetry sliding connection and has the extension subassembly, and main clipboard is located top horizontal segment up end and installs spacing subassembly, the clean subassembly of terminal surface fixedly connected with before the vertical section of main clipboard.

The extension subassembly includes sliding plate, lead screw, rotating head, movable block, stopper, bracing piece and vice clipboard, main clipboard is located below horizontal segment up end sliding connection has the sliding plate, and the terminal surface longitudinal symmetry has seted up the extension hole before the sliding plate, and the one end of extending downthehole being close to main clipboard rotates and is connected with the lead screw, and the one end that main clipboard was kept away from to the lead screw runs through sliding plate and fixedly connected with rotating head, and bilateral symmetry threaded connection has the movable block on the lead screw, and movable block sliding connection is on the interior wall that extends the hole, and two extend the hole and be close to equal fixedly connected with stopper on the inner wall of plane of symmetry, the preceding terminal surface of movable block articulates there is the bracing piece, four the one end that the movable block was kept away from to the bracing piece articulates jointly has vice clipboard.

According to a preferred technical scheme, the angle adjusting assembly comprises a rotating rod, connecting frames, an angle adjusting gear, a baffle plate, a limiting clamping jaw and a limiting spring, the rotating rod is rotatably connected between two vertical plates of the supporting seat, the connecting frames are fixedly connected to the rotating rod in a bilateral symmetry mode, the two connecting frames are fixedly connected with the main writing plate, the right end of the rotating rod penetrates through the vertical plates and is fixedly connected with the angle adjusting gear, the baffle plate is fixedly connected to the right end face of the vertical plate on the right side, the limiting clamping jaw is slidably connected to the right end face of the vertical plate on the right side above the baffle plate, the limiting clamping jaw is matched with the angle adjusting gear, and the limiting spring is fixedly connected between the lower end face of the limiting clamping jaw and the upper end face of the baffle plate.

As a preferred technical scheme of the invention, the cleaning assembly comprises a cleaning sliding block, a vertical shaft, a corner plate, a stop strip, threaded rods, a loading plate, a compression spring, a rubber strip, a cleaning sponge and a water supply mechanism, wherein the front end face of the main writing plate is vertically and symmetrically connected with the cleaning sliding block in a sliding manner, the vertical shaft is fixedly connected between opposite faces of the two cleaning sliding blocks, the corner plate is sleeved outside the vertical shaft and is rotatably connected to the vertical shaft, a fan-shaped cavity is formed in the corner plate, the stop strip fixedly connected to the outer surface of the vertical shaft is arranged in the fan-shaped cavity, the front end face of the corner plate is bilaterally and symmetrically in threaded connection with the threaded rods, the rear end faces of all the threaded rods penetrate through the corner plate and are jointly and rotatably connected with the loading plate, the compression spring is sleeved outside each threaded rod, and the front end and the rear end of each compression spring are respectively and fixedly connected to the rear end face of the corner plate and the front end face of the loading plate, load board rear end face middle part fixedly connected with rubber strip, the rubber strip left and right sides all is provided with the clean sponge of installing at load board rear end face, loads the inside water supply cavity that is equipped with in board right side, loads the terminal surface and is connected with water supply mechanism under the board.

According to a preferred technical scheme, the limiting assembly comprises a limiting bolt, a pull ring and a telescopic spring, limiting holes are symmetrically formed in the left and right of the upper end face of the upper horizontal section of the main writing board, the limiting bolt is connected in the limiting holes in a sliding mode, the pull ring is fixedly connected to the upper end face of the limiting bolt, and the telescopic spring is fixedly connected between the lower end face of the pull ring and the upper end face of the upper horizontal section of the main writing board.

As a preferred technical scheme of the invention, the water supply mechanism comprises a flexible water pipe and a water pump, the lower end face of the loading plate is fixedly connected with the flexible water pipe, the interior of the flexible water pipe is communicated with the water supply cavity in the loading plate, one end of the flexible water pipe, which is far away from the loading plate, is fixedly connected with the water pump, and the water pump is fixedly connected with the upper end face of the supporting seat.

As a preferable technical scheme of the invention, a plurality of one-way water outlets are uniformly formed in the rear end face of the water supply cavity in the loading plate from the upper belt to the lower belt.

As a preferable technical solution of the present invention, rear end surfaces of the two cleaning sponges are provided as arc surfaces with a vertical axis as an axis.

As a preferred technical scheme of the invention, the upper end surface of the sliding plate is provided with a bolt hole matched with the limiting bolt.

Has the beneficial effects that: the auxiliary writing board is provided with the extending component and the limiting component, when a writing area is insufficient, the sliding board can be pulled out, the limiting component is used for limiting, then the rotating head is rotated to enable the screw rod to drive the moving block to extend the supporting rod forwards, and finally the auxiliary writing board is flush with the board surface of the main writing board, so that the board surface expanding effect is achieved, and the teaching efficiency is improved.

The cleaning assembly is arranged, the loading plate is provided with two cleaning sponges tightly attached to the main writing plate, the loading plate and the corner plate can rotate around the vertical shaft in a limited mode, the cleaning sliding block moves back and forth to achieve that the two cleaning sponges clean the main writing plate in turn when handwriting is wiped, when the plate surface is cleaned, water pumped by the water pump wets the cleaning sponge on the right side through the flexible water pipe, and when the subsequent cleaning sliding block moves left and right, the effect of wetting first and then wiping can be achieved, so that residual marks can be removed, and the teaching effect is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic rear perspective view of the present invention.

FIG. 3 is an enlarged view taken at M of FIG. 2.

Fig. 4 is a front view of the present invention.

Fig. 5 is a partial cross-sectional view taken along line a-a of fig. 4 in accordance with the present invention.

Fig. 6 is a cross-sectional view of the stretching assembly of the present invention.

Figure 7 is a cross-sectional view of a stop assembly of the present invention.

In the figure: 1. a supporting seat; 2. an angle adjusting component; 21. rotating the rod; 22. a connecting frame; 23. an angle adjusting gear; 24. a baffle plate; 25. a limiting jaw; 26. a limiting spring; 3. a main writing board; 4. an extension assembly; 41. a sliding plate; 42. a lead screw; 43. rotating the head; 44. a moving block; 45. a limiting block; 46. a support bar; 47. a sub-writing board; 5. a limiting component; 51. a limiting bolt; 52. a pull ring; 53. a tension spring; 6. a cleaning assembly; 61. cleaning the sliding block; 62. a vertical axis; 63. corner plates; 64. a stopper bar; 65. a threaded rod; 66. a loading plate; 67. a compression spring; 68. a rubber strip; 69. cleaning the sponge; 60. a water supply mechanism; 601. a flexible water pipe; 602. and (4) a water pump.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Referring to fig. 1, a device is write to english teaching portable, including supporting seat 1, angle modulation subassembly 2, main clipboard 3, extension subassembly 4, spacing subassembly 5 and clean subassembly 6, supporting seat 1 places subaerial, and supporting seat 1 has the vertical board that base and bilateral symmetry set up to constitute, and angle modulation subassembly 2 is installed on supporting seat 1 upper portion, and terminal surface fixedly connected with owner clipboard 3 before the angle modulation subassembly 2, main clipboard 3 is Contraband type structure, and main clipboard 3 is located below horizontal segment up end bilateral symmetry sliding connection and has extension subassembly 4, and main clipboard 3 is located top horizontal segment up end and installs spacing subassembly 5, and terminal surface fixedly connected with cleans subassembly 6 before the vertical section of main clipboard 3.

Referring to fig. 2 and 3, the angle modulation assembly 2 includes a rotating rod 21, a connecting frame 22, an angle modulation gear 23, a baffle 24, a limiting jaw 25 and a limiting spring 26, the rotating rod 21 is rotatably connected between two vertical plates of the supporting seat 1, the connecting frame 22 is fixedly connected to the rotating rod 21 in a bilateral symmetry manner, the two connecting frames 22 are fixedly connected to the main writing board 3, the right end of the rotating rod 21 penetrates through the vertical plates and is fixedly connected with the angle modulation gear 23, the baffle 24 is fixedly connected to the right end face of the vertical plate on the right side, the limiting jaw 25 is slidably connected to the right end face of the vertical plate on the right side above the baffle 24, the limiting jaw 25 is matched with the angle modulation gear 23, and the limiting spring 26 is fixedly connected between the lower end face of the limiting jaw 25 and the upper end face of the baffle 24.

During specific work, the spacing jack catch 25 of artifical pulling is the downstream makes spacing jack catch 25 and angle modulation gear 23 no longer mesh, spacing spring 26 is compressed this moment, the link 22 is rotated to the manual work afterwards, link 22 drives dwang 21 and rotates, further drive angle modulation gear 23 and rotate, loosen spacing jack catch 25 after adjusting link 22 to reach suitable position, spacing spring 26 stretches out and drives spacing jack catch 25 and upwards remove, thereby spacing jack catch 25 has realized the spacing of angle modulation gear 23 with angle modulation gear 23 meshing again, and then realized the angle modulation to the main clipboard 3 of fixed connection at link 22.

Referring to fig. 2 and 6, the extension assembly 4 includes a sliding plate 41, a lead screw 42, a rotating head 43, a moving block 44, a stopper 45, a support rod 46 and a sub writing board 47, the upper end surface of the horizontal section below the main writing board 3 is connected with a sliding board 41 in a sliding manner, the front end surface of the sliding board 41 is provided with extending holes in an up-down symmetrical manner, one end of each extending hole, which is close to the main writing board 3, is connected with a lead screw 42 in a rotating manner, one end of each lead screw 42, which is far away from the main writing board 3, penetrates through the sliding board 41 and is fixedly connected with a rotating head 43, the lead screw 42 is connected with moving blocks 44 in a bilateral symmetrical manner through threads, the moving blocks 44 are connected with the inner walls of the extending holes in a sliding manner, the inner walls of the two extending holes, which are close to the symmetrical plane, are both fixedly connected with limiting blocks 45, the front end surface of the moving block 44 is hinged with a support rod 46, and one ends of the four support rods 46 far away from the moving block 44 are hinged with an auxiliary writing board 47 together.

Referring to fig. 4 and 7, the limiting assembly 5 includes a limiting bolt 51, a pull ring 52 and a telescopic spring 53, the main writing board 3 is located on the upper end face of the upper horizontal section and is bilaterally symmetrical, a limiting hole is formed, the limiting bolt 51 is slidably connected in the limiting hole, the pull ring 52 is fixedly connected to the upper end face of the limiting bolt 51, the telescopic spring 53 is fixedly connected between the lower end face of the pull ring 52 and the upper end face of the upper horizontal section of the main writing board 3, and a bolt hole matched with the limiting bolt 51 is formed in the upper end face of the sliding plate 41.

When the English teaching device works specifically, when a larger writing space is needed in the English teaching process, the sliding plate 41 is pulled manually to move in the direction away from the center of the main writing plate 3, at the moment, the expansion spring 53 is stretched, the limiting bolt 51 is tightly attached to the upper end face of the sliding plate 41 to slide due to the elasticity of the expansion spring 53, after the auxiliary writing plate 47 is completely pulled out, the limiting bolt 51 just slides to the bolt hole of the upper end face of the sliding plate 41, the expansion spring 53 contracts to drive the pull ring 52 and the limiting bolt 51 to move downwards, so that the limiting bolt 51 enters the bolt hole to complete limiting and fixing of the extension assembly 4, then the rotating head 43 is rotated, the rotating head 43 drives the lead screw 42 to rotate, further two moving blocks 44 move in the directions close to each other, in the moving process, the moving block 44 drives the support rod 46 to rotate, so that the auxiliary writing plate 47 moves forwards, and stops moving after the moving block 44 moves and contacts the limiting block 45, at this moment, the auxiliary writing board 47 just moves to the position where the front end face of the auxiliary writing board is flush with the front end face of the main writing board 3, so that the limiting of the auxiliary writing board 47 is completed, the expansion of a writing area is completed in the step, when the auxiliary writing board 47 needs to be withdrawn later, the rotating head 43 is manually rotated in the reverse direction, and then the two moving blocks 44 move in the directions away from each other, finally the auxiliary writing board 47 moves backwards, then the pull ring 52 is pulled upwards, the pull ring 52 drives the limiting plug pin 51 to withdraw from the plug pin hole, then the sliding plate 41 is pushed in the direction close to the center of the main writing board 3, the pull ring 52 is released after the auxiliary writing board 47 is completely withdrawn, the telescopic spring 53 contracts to drive the pull ring 52 and the limiting plug pin 51 to move downwards, and the withdrawing of the extension component 4 is completed.

Referring to fig. 1 and 5, the cleaning assembly 6 comprises cleaning sliders 61, vertical shafts 62, corner plates 63, stop strips 64, threaded rods 65, loading plates 66, compression springs 67, rubber strips 68, cleaning sponges 69 and a water supply mechanism 60, the cleaning sliders 61 are connected to the front end face of the main writing board 3 in a vertically symmetrical and sliding mode, the vertical shafts 62 are fixedly connected between opposite faces of the two cleaning sliders 61, the corner plates 63 are sleeved outside the vertical shafts 62, the corner plates 63 are rotatably connected to the vertical shafts 62, sector-shaped cavities are formed inside the corner plates 63, the stop strips 64 fixedly connected to the outer surfaces of the vertical shafts 62 are arranged inside the sector-shaped cavities, the threaded rods 65 are connected to the front end face of the corner plates 63 in a left-right symmetrical mode through threads, the rear end faces of all the threaded rods 65 penetrate through the corner plates 63 and are rotatably connected with the loading plates 66 together, the compression springs 67 are sleeved outside each threaded rod 65, the front end and the rear end of the compression spring 67 are respectively fixedly connected to the rear end face of the corner plate 63 and the front end face of the loading plate 66, a rubber strip 68 is fixedly connected to the middle of the rear end face of the loading plate 66, cleaning sponges 69 installed on the rear end face of the loading plate 66 are arranged on the left side and the right side of the rubber strip 68, a water supply cavity is formed inside the right side of the loading plate 66, a water supply mechanism 60 is connected to the lower end face of the loading plate 66, and the rear end face of each cleaning sponge 69 is arranged to be an arc face with the vertical shaft 62 as a shaft.

Referring to fig. 1, the water supply mechanism 60 includes a flexible water pipe 601 and a water pump 602, the lower end face of the loading plate 66 is fixedly connected with the flexible water pipe 601, the inside of the flexible water pipe 601 is communicated with the inside water supply cavity of the loading plate 66, one end of the flexible water pipe 601 far away from the loading plate 66 is fixedly connected with the water pump 602, the water pump 602 is fixedly connected to the upper end face of the supporting seat 1, and a plurality of one-way water outlets are uniformly formed in the rear end face of the inside water supply cavity of the loading plate 66 from the upper belt.

When the writing erasing device works specifically, when the writing erasing is required to be carried out on the main writing board 3, firstly, the threaded rod 65 is rotated to adjust the elastic force of the pressing spring 67, so that the rubber strip 68 and the cleaning sponge 69 are clung to the front end face of the main writing board 3, then, the cleaning slider 61 is driven by an external moving device to move rightwards, the cleaning slider 61 drives the vertical shaft 62 to move, because the friction force between the rubber strip 68 and the main writing board 3 enables the corner plate 63, the loading plate 66, the rubber strip 68 and the cleaning sponge 69 to rotate, when the inner wall of the sector cavity in the corner plate 63 is abutted to the stop strip 64, the corner plate 63 stops rotating, the cleaning sponge 69 on the right side is clung to the main writing board 3, then the vertical shaft 62 continues to move, so that the cleaning sponge 69 on the right side erases the writing on the main writing board 3, and when the main writing board 3 moves to the rightmost end, the external moving device drives the cleaning slider 61 to move leftwards, thereby the angle plate 63 rotates reversely until the cleaning sponge 69 at the left side clings to the main writing board 3, then the left side moves leftwards to drive the cleaning sponge 69 at the left side to further wipe the board surface of the main writing board 3, thereby improving the effect of wiping handwriting, when the teaching writing device is used and the board surface needs to be cleaned, the water pump 602 is manually opened, the water flow in the water pump 602 flows through the flexible water pipe 601 to reach the water supply cavity of the loading board 66, finally flows out through the one-way water outlet hole on the water supply cavity, so that the cleaning sponge 69 at the right side is wetted, then the same steps as the handwriting wiping are repeated, thereby the cleaning sponge 69 wipes the main writing board 3 back and forth, different from the handwriting wiping, in the process of moving rightwards, the cleaning sponge 69 at the right side can preliminarily wet the board surface of the main writing board 3, and then the cleaning sponge 69 at the left side wipes the main writing board 3 when moving leftwards, the reciprocating movement of the cleaning slider 61 is repeated to complete the cleaning work of the writing instrument.

When using this english teaching portable to write device, S1: the spacing jack catch 25 of manual pulling is removed downwards and is made spacing jack catch 25 and angle modulation gear 23 no longer mesh, spacing spring 26 is compressed this moment, the link 22 is rotated to the manual work afterwards, link 22 drives dwang 21 and rotates, further drive angle modulation gear 23 and rotate, loosen spacing jack catch 25 after adjusting link 22 to reach suitable position, spacing spring 26 stretches out and drives spacing jack catch 25 and upwards remove, thereby spacing jack catch 25 meshes with angle modulation gear 23 again and has realized spacing to angle modulation gear 23, and then realized the angle modulation to the main clipboard 3 of fixed connection at link 22.

S2: when a larger writing space is needed in the English teaching process, the sliding plate 41 is manually pulled to move in a direction away from the center of the main writing board 3, at the moment, the expansion spring 53 is stretched, the limiting bolt 51 is tightly attached to the upper end face of the sliding plate 41 to slide due to the elasticity of the expansion spring 53, after the auxiliary writing board 47 is completely pulled out, the limiting bolt 51 just slides to the bolt hole on the upper end face of the sliding plate 41, the expansion spring 53 contracts to drive the pull ring 52 and the limiting bolt 51 to move downwards, so that the limiting bolt 51 enters the bolt hole to complete limiting and fixing of the extension assembly 4, then the rotating head 43 is rotated, the rotating head 43 drives the lead screw 42 to rotate, the two moving blocks 44 move in directions close to each other, in the moving process, the moving block 44 drives the support rod 46 to rotate, so that the auxiliary writing board 47 moves forwards, and when the moving block 44 moves to contact with the limiting block 45, the moving block stops moving, at this time, the sub tablet 47 is just moved to a position where the front end surface thereof is flush with the front end surface of the main tablet 3, whereby the position limitation of the sub tablet 47 is completed, which completes the expansion of the writing area.

S3: when the main writing board 3 needs to be erased, firstly, the threaded rod 65 is rotated to adjust the elastic force of the pressing spring 67, so that the rubber strip 68 and the cleaning sponge 69 are tightly attached to the front end face of the main writing board 3, then the cleaning slider 61 is driven by an external moving device to move rightwards, the cleaning slider 61 drives the vertical shaft 62 to move, because the friction force between the rubber strip 68 and the main writing board 3 enables the corner plate 63, the loading plate 66, the rubber strip 68 and the cleaning sponge 69 to rotate, when the inner wall of the sector cavity in the corner plate 63 is abutted to the stop strip 64, the corner plate 63 stops rotating, the cleaning sponge 69 on the right side is tightly attached to the main writing board 3, then the vertical shaft 62 continues to move, so that the cleaning sponge 69 on the right side erases the written characters on the main writing board 3, when the cleaning slider 61 is driven by the external moving device to move leftwards after the rightmost end of the main writing board 3 is moved, so that the angle plate 63 rotates reversely until the cleaning sponge 69 on the left side clings to the main writing board 3, and then the cleaning sponge 69 on the left side is further wiped by moving leftwards.

S4: when the teaching writing device is used and the board surface is required to be cleaned, the water pump 602 is manually turned on, water flow in the water pump 602 flows through the flexible water pipe 601 to reach the water supply cavity of the loading plate 66, and finally flows out through the one-way water outlet hole on the water supply cavity, so that the cleaning sponge 69 on the right side is moistened, the same steps as the handwriting erasing are repeated, the main writing board 3 is wiped by the cleaning sponge 69, the cleaning sponge 69 on the right side primarily moistens the board surface of the main writing board 3 in the process of moving right, the cleaning sponge 69 on the left side wipes the main writing board 3 in the process of moving left, the reciprocating motion of the cleaning slider 61 is repeated, the cleaning work of the writing device is completed, then the rotating head 43 is manually rotated reversely, and the two moving blocks 44 move in the directions away from each other, finally, the auxiliary writing board 47 moves backwards, then the pull ring 52 is pulled upwards, the pull ring 52 drives the limit bolt 51 to exit the bolt hole, then the sliding plate 41 is pushed towards the direction close to the center of the main writing board 3, when the auxiliary writing board 47 is completely retracted, the pull ring 52 is released, the expansion spring 53 contracts to drive the pull ring 52 and the limit bolt 51 to move downwards, and the retraction of the extension assembly 4 is completed.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a device is write to english teaching portable, includes supporting seat (1), angle modulation subassembly (2), main clipboard (3), extends subassembly (4), spacing subassembly (5) and clean subassembly (6), its characterized in that: supporting seat (1) is placed subaerial, and supporting seat (1) has the vertical board that base and bilateral symmetry set up to constitute, and angle modulation subassembly (2) are installed on supporting seat (1) upper portion, and terminal surface fixedly connected with owner clipboard (3) before angle modulation subassembly (2), main clipboard (3) are Contraband type structure, and main clipboard (3) are located below horizontal segment up end bilateral symmetry sliding connection and have and extend subassembly (4), and main clipboard (3) are located top horizontal segment up end and install spacing subassembly (5), and terminal surface fixedly connected with cleaning assembly (6) before main clipboard (3) the vertical segment, wherein:

the extension assembly (4) comprises a sliding plate (41), a lead screw (42), a rotating head (43), a moving block (44), a limiting block (45), a supporting rod (46) and an auxiliary writing board (47), the upper end face of the horizontal section below the main writing board (3) is connected with the sliding plate (41) in a sliding mode, extension holes are formed in the front end face of the sliding plate (41) in an up-and-down symmetrical mode, the lead screw (42) is rotatably connected to one end, close to the main writing board (3), in each extension hole, one end, far away from the main writing board (3), of the lead screw (42) penetrates through the sliding plate (41) and is fixedly connected with the rotating head (43), the moving block (44) is in threaded connection in the lead screw (42) in a left-and-right symmetrical mode, the moving block (44) is slidably connected to the inner wall of the extension holes, the limiting blocks (45) are fixedly connected to the inner walls, and the front end face of the moving block (44) is hinged with the supporting rod (46), one ends of the four supporting rods (46) far away from the moving block (44) are hinged with an auxiliary writing board (47) together.

2. The English teaching portable writing device of claim 1, characterized in that: the angle adjusting component (2) comprises a rotating rod (21), a connecting frame (22), an angle adjusting gear (23), a baffle plate (24), a limiting claw (25) and a limiting spring (26), a rotating rod (21) is rotatably connected between the two vertical plates of the supporting seat (1), bilateral symmetry fixedly connected with link (22), two on dwang (21) link (22) all with main clipboard (3) fixed connection, dwang (21) right-hand member runs through vertical board and fixedly connected with angle modulation gear (23), is located vertical board right-hand member face fixedly connected with baffle (24) on right side, is located vertical board right-hand member face on right side and is located baffle (24) top sliding connection and have spacing jack catch (25), and spacing jack catch (25) cooperate with angle modulation gear (23), fixedly connected with spacing spring (26) between terminal surface and baffle (24) up end under spacing jack catch (25).

3. The English teaching portable writing device of claim 1, characterized in that: clean subassembly (6) including clean slider (61), vertical axle (62), corner board (63), locking strip (64), threaded rod (65), loading board (66), pressure spring (67), rubber strip (68), clean sponge (69) and water supply mechanism (60), main clipboard (3) preceding terminal surface longitudinal symmetry sliding connection has clean slider (61), two fixedly connected with vertical axle (62) between clean slider (61) the opposite face, and vertical axle (62) outside cover is equipped with corner board (63), and corner board (63) rotate to be connected on vertical axle (62), and the fan-shaped cavity has been seted up to corner board (63) inside, is provided with locking strip (64) of fixed connection at vertical axle (62) surface in the fan-shaped cavity, corner board (63) preceding terminal surface longitudinal symmetry threaded connection has a plurality of threaded rods (65), and all threaded rod (65) rear end all run through corner board (63) and rotate jointly and be connected with loading board (66) The utility model discloses a loading board, including loading board (66), rubber strip (68), loading board (66) and water supply cavity, every threaded rod (65) outside all is equipped with housing spring (67), and housing spring (67) front and back both ends difference fixed connection is on corner board (63) rear end face and loading board (66) preceding terminal surface, loading board (66) rear end face middle part fixedly connected with rubber strip (68), rubber strip (68) the left and right sides all is provided with clean sponge (69) of installing at loading board (66) rear end face, and loading board (66) right side inside is equipped with the water supply cavity, and the terminal surface is connected with water supply mechanism (60) under loading board (66).

4. The English teaching portable writing device of claim 1, characterized in that: spacing subassembly (5) are including spacing bolt (51), pull ring (52) and expanding spring (53), main clipboard (3) are located top horizontal segment up end bilateral symmetry and have seted up spacing hole, and spacing downthehole sliding connection has spacing bolt (51), and spacing bolt (51) up end fixedly connected with pull ring (52), pull ring (52) lower terminal surface and main clipboard (3) are located fixedly connected with expanding spring (53) between the top horizontal segment up end.

5. The portable English teaching writing device of claim 3, wherein: the water supply mechanism (60) comprises a flexible water pipe (601) and a water pump (602), the lower end face of the loading plate (66) is fixedly connected with the flexible water pipe (601), the interior of the flexible water pipe (601) is communicated with a water supply cavity inside the loading plate (66), one end of the flexible water pipe (601) far away from the loading plate (66) is fixedly connected with the water pump (602), and the water pump (602) is fixedly connected to the upper end face of the supporting seat (1).

6. The English teaching portable writing device of claim 3, characterized in that: the rear end face of the water supply cavity in the loading plate (66) is uniformly provided with a plurality of one-way water outlets from the upper belt to the lower belt.

7. The English teaching portable writing device of claim 3, characterized in that: the rear end faces of the two cleaning sponges (69) are arranged to be arc surfaces taking a vertical shaft (62) as an axis.

8. The English teaching portable writing device of claim 4, characterized in that: the upper end surface of the sliding plate (41) is provided with a bolt hole matched with the limiting bolt (51).