Adjustable Chinese teaching appliance

Abstract

The utility model discloses an adjustable Chinese teaching aid which comprises a supporting frame. A writing board is arranged in the supporting frame, the lower end of the front side face of the supporting frame is slidably connected with character learning card supporting seats which are evenly distributed, the left end and the right end of the rear side face of each character learning card supporting seat are each provided with a second pin shaft, the rear side face of the supporting frame is rotatably connected with a bidirectional lead screw, and the interior of the supporting frame is slidably connected with two movable frames; the two movable frames are both in threaded connection with the two-way lead screw, the front end of each movable frame is slidably connected with two first pin shafts, the outer arc face of each first pin shaft is rotationally connected with two connecting rods, and the ends, away from the transverse center of the supporting frame, of the connecting rods are obliquely arranged and rotationally connected with the corresponding second pin shafts in the transverse direction. The literacy cards can be clamped and fixed through the literacy card supporting seats, meanwhile, the distance between the literacy card supporting seats can be adjusted, the use convenience is good, and the good teaching effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to language teaching aid technical field, concretely is a kind of adjustable language teaching aid. BACKGROUND

[0002] Teaching aid is the tool used when teacher teaches, can make student can visually, visually understand the teaching content and the tool used when teacher teaches the general term of various kinds of appliances, teaching aid can improve the interest of students, rich perceptual knowledge, help to form clear concept, develop the observation ability and thinking ability of students, in language teaching, character card is used to display character, and it is convenient for students to understand, character card is generally paper, and it is often necessary to use adhesive tape or magnet to temporarily fix it, positioning is needed during fixing process, and auxiliary tool is needed to fix, and the convenience is poor, and there is also the structure simple and convenient to use to support and position character card using groove body, but the interval between the groove body is generally fixed, and the interval cannot be adjusted, after the character card of different heights is inserted, the character card between upper and lower is prone to have larger gap or overlapping phenomenon, and then the teaching effect is affected. UTILITY MODEL CONTENT

[0003] The utility model solves the technical problems of overcoming the defects of the prior art, providing a kind of adjustable language teaching aid, character card support seat can be clamped and fixed to character card, and the interval of character card support seat can be adjusted by rotating bidirectional screw rod during use, character card support seat can be equidistantly unfolded to facilitate the use of character card of different heights, and the convenience is good and has good teaching effect, which can effectively solve the problems in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of adjustable language teaching aid, including support frame;

[0005] Support frame: its inside is equipped with writing board, the lower end of the front side of support frame is slidably connected with the uniformly distributed character card support seat, the rear side of character card support seat is equipped with the pin shaft two at left and right ends, the rear side of support frame is rotatably connected with bidirectional screw rod, the inside of support frame is slidably connected with two moving frames, two moving frames are threadedly connected with bidirectional screw rod, the front end of moving frame is slidably connected with two pin shafts one, the outer arc surface of four pin shafts one is rotatably connected with two connecting rods, the end away from support frame of connecting rod is inclined and is rotatably connected with the pin shaft two corresponding to horizontal direction, character card can be clamped and fixed by character card support seat when using, and the interval of character card support seat can be adjusted by rotating bidirectional screw rod during use, under the action of connecting rod, three character card support seats can be equidistantly unfolded to facilitate the use of character card of different heights, and writing board can be written and displayed after contraction, and the convenience of language teaching aid is good.

[0006] Further, the left and right ends of the rear side of the character card support seat are respectively provided with a sliding block, the six sliding blocks are slidably connected with the longitudinal corresponding sliding grooves of the front side of the support frame, the lower end of the front side of the support frame is provided with two fixing seats, the two fixing seats are fixedly connected with the lowermost character card support seat, and the stability of the fixing seat structure is improved.

[0007] Further, the left end of the bidirectional screw rod is provided with a hand wheel, so that the rotation of the bidirectional screw rod is facilitated.

[0008] Further, the lower end of the front side of the character card support seat is slidably connected with two sliding seats, the two sliding seats are horizontally corresponding, the front ends of the three groups of sliding seats are provided with pressing plates, the pressing plates are respectively located at the upper end of the front side of the character card support seat, the lower end of the front side of the character card support seat is provided with two spring sheets, and the six spring sheets are arranged in longitudinal correspondence with the sliding seats, so that the character card is fixed.

[0009] Further, the support frame is provided with a protective shell, the right end of the bidirectional screw rod and the two moving frames are located in the protective shell, and the protective shell protects the internal parts.

[0010] Further, the lower surface of the support frame is provided with a threaded seat for facilitating connection with an external support.

[0011] Further, the lower surface of the support frame is provided with a threaded seat for facilitating connection with an external support.

[0012] Compared with the prior art, the adjustable language teaching aid has the following advantages:

[0013] When in use, the character card can be clamped and fixed by the character card support seat, the distance between the character card support seats can be adjusted by rotating the bidirectional screw rod in the use process, the three character card support seats can be expanded equidistantly under the action of the connecting rod, the character cards of different heights can be used conveniently, the character cards can be placed neatly, the language teaching effect is good, the writing board can be used for writing display after being folded, and the language teaching aid is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a sectional view of the support frame of the utility model;

[0016] Figure 3 It is a sectional view of the character card support seat of the utility model;

[0017] Figure 4The utility model discloses a place amplification structure schematic diagram A.

[0018] In the drawing: 1 support frame, 2 writing board, 3 moving frame, 4 bidirectional screw rod, 5 pin shaft one, 6 connecting rod, 7 literacy card support seat, 8 pin shaft two, 9 sliding block, 10 fixed seat, 11 sliding seat, 12 pressing plate, 13 spring piece, 14 arc strip, 15 threaded seat, 16 protective shell, 17 hand wheel. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figures 1-4 The utility model provides a kind of technical solutions: a adjustable Chinese teaching aid, including support frame 1;

[0021] Support frame 1: its inside is equipped with writing board 2, support frame 1 provides other components with pull installation position, writing board 2 is magnetic green board writing board, and teaching can be written on writing board 2 in the process of teaching, the lower end of the front side of support frame 1 is slidably connected with evenly distributed character card support seat 7, the left and right ends of the rear side of character card support seat 7 are both equipped with pin shaft two 8, the rear side of support frame 1 is rotatably connected with bidirectional screw rod 4, the inside of support frame 1 is slidably connected with two moving frames 3, the two moving frames 3 are both threadedly connected with bidirectional screw rod 4, the front ends of moving frames 3 are both slidably connected with two pin shafts one 5, the outer arc surfaces of four pin shafts one 5 are both rotatably connected with two connecting rods 6, the ends of connecting rods 6 away from the horizontal center of support frame 1 are all obliquely arranged and rotatably connected with horizontally corresponding pin shaft two 8, bidirectional screw rod 4 drives two moving frames 3 to move away from the horizontal center of support frame 1, moving frame 3 pushes the end of connecting rod 6 through pin shaft one 5, three vertically corresponding connecting rods 6 are connected head to tail to form a folded strip through two pin shafts one 5 and middle pin shaft two 8, pin shaft two 8 cannot move horizontally, when pin shaft one 5 moves away from the horizontal center, the included angle between two vertically adjacent connecting rods 6 increases, connecting rod 6 and the connected pin shaft one 5 and pin shaft two 8 relatively rotate, four pin shaft two 8 and four upper pin shaft one 5 move upwards, connecting rod 6 moves and drives two upper character card support seats 7 to move upwards through four upper pin shaft two 8, the left and right ends of the rear side of character card support seat 7 are both equipped with sliding block 9, six sliding blocks 9 are all slidably connected with the longitudinal corresponding sliding grooves of the front side of support frame 1, sliding block 9 provides moving guide for character card support seat 7, the lower end of the front side of support frame 1 is equipped with two fixed seats 10, the two fixed seats 10 are both fixedly connected with the lowermost character card support seat 7, fixed seat 10 limits the vertical movement of the lower character card support seat 7, the left end of bidirectional screw rod 4 is equipped with hand wheel 17, bidirectional screw rod 4 is rotated through hand wheel 17, the lower end of the front side of character card support seat 7 is slidably connected with two sliding seats 11, horizontally corresponding two sliding seats 11 form a group, the front ends of three groups of sliding seats 11 are all equipped with pressing plates 12, pressing plates 12 are respectively located at the upper ends of the front sides of character card support seats 7, character cards are inserted between character card support seats 7 and pressing plates 12, the lower end of the front side of character card support seat 7 is equipped with two spring sheets 13, six spring sheets 13 are all arranged in longitudinal corresponding sliding seats 11, spring sheet 13 exerts pressure on sliding seat 11, drives pressing plate 12 to move backwards, further comprising arc strips 14, the number of arc strips 14 is three, three arc strips 14 are respectively arranged at the upper ends of the rear sides of pressing plates 12, character cards are clamped by pressing plate 12 through arc strip 14, arc strip 14 reduces the contact area of pressing plate 12 and character cards, facilitates insertion and pulling out, the rear side of support frame 1 is equipped with protective shell 16, the right end of bidirectional screw rod 4 and two moving frames 3 are all located in the inside of protective shell 16, protective shell 16 provides protection for the internal components, the lower surface of support frame 1 is equipped with threaded seat 15,Support frame 1 is supported by connecting external support and threaded seat 15.

[0022] The working principle of the adjustable Chinese teaching aid is as follows: in the process of Chinese teaching, external support and threaded seat 15 are connected to support support frame 1, in the process of teaching, teaching can be written on writing board 2, when it is necessary to use a card to teach, the card can be inserted between card support seat 7 and pressing plate 12, before insertion, the distance between card support seats 7 can be adjusted according to the height of the card, when adjusting, two-way screw rod 4 can be rotated by hand wheel 17, two-way screw rod 4 drives two moving frames 3 to move away from the horizontal center of support frame 1, moving frame 3 pushes the end of connecting rod 6 through pin shaft one 5, three connecting rods 6 are connected in head-to-tail mode through two pin shafts one 5 and pin shaft two 8, pin shaft two 8 cannot move horizontally, when pin shaft one 5 moves away from the center horizontally, the included angle between the two connecting rods 6 adjacent vertically will increase, connecting rod 6 and pin shaft one 5 and pin shaft two 8 connected thereto will rotate relatively, fixed seat 10 limits the vertical movement of lower card support seat 7, four pin shafts two 8 and four pin shafts one 5 on the upper side move upward, in the process of moving, connecting rod 6 will drive the two upper card support seats 7 to move upward through four pin shafts two 8 on the upper side, and then three card support seats 7 will be unfolded, after unfolding to the appropriate distance, the card can be inserted between card support seat 7 and pressing plate 12, spring sheet 13 exerts pressure on sliding seat 11, driving pressing plate 12 to move backward, pressing plate 12 clamps the card through arc-shaped strip 14, and then the Chinese teaching work is facilitated.

[0023] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, any equivalent structure or equivalent process transformation according to the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. An adjustable language teaching aid, characterized by: It includes support frame (1); Support frame (1): its inside is equipped with writing board (2), the lower end of the front side of support frame (1) is slidably connected with evenly distributed literacy card support seat (7), the left and right ends of the rear side of literacy card support seat (7) are equipped with pin shaft two (8), the rear side of support frame (1) is rotatably connected with bidirectional screw rod (4), the inside of support frame (1) is slidably connected with two moving frames (3), two moving frames (3) are threadedly connected with bidirectional screw rod (4), the front end of moving frame (3) is slidably connected with two pin shafts one (5), the outer arc surface of four pin shafts one (5) is rotatably connected with two connecting rods (6), the end of connecting rod (6) away from the horizontal center of support frame (1) is obliquely arranged and rotatably connected with horizontally corresponding pin shaft two (8).

2. The adjustable language teaching aid of claim 1, wherein: The left and right ends of the rear side of literacy card support seat (7) are equipped with sliding block (9), six sliding blocks (9) are slidably connected with longitudinal corresponding sliding groove of the front side of support frame (1), the lower end of the front side of support frame (1) is equipped with two fixed seats (10), two fixed seats (10) are fixedly connected with the lowermost literacy card support seat (7).

3. The adjustable language teaching aid of claim 1, wherein: The left end of bidirectional screw rod (4) is equipped with hand wheel (17).

4. The adjustable language teaching aid of claim 1, wherein: The lower end of the front side of literacy card support seat (7) is slidably connected with two sliding seats (11), horizontally corresponding two sliding seats (11) are a group, the front end of three groups of sliding seats (11) is equipped with pressing plate (12), pressing plate (12) is respectively located at the upper end of the front side of literacy card support seat (7), the lower end of the front side of literacy card support seat (7) is equipped with two spring sheets (13), six spring sheets (13) are arranged in longitudinal corresponding sliding seat (11).

5. The adjustable language teaching aid of claim 4, wherein: It also includes arc strip (14), the number of arc strip (14) is three, three arc strips (14) are arranged at the upper end of the rear side of pressing plate (12).

6. The adjustable language teaching aid of claim 1, wherein: The rear side of support frame (1) is equipped with protective shell (16), the right end of bidirectional screw rod (4) and two moving frames (3) are located in the inside of protective shell (16).

7. The adjustable language teaching aid of claim 1, wherein: The lower surface of support frame (1) is equipped with threaded seat (15).

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