CN108898892B

CN108898892B - English word teaching device

Info

Publication number: CN108898892B
Application number: CN201810995607.6A
Authority: CN
Inventors: 陈莉娟
Original assignee: Hon Hai Precision Industry Co Ltd
Current assignee: Hon Hai Precision Industry Co Ltd
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2020-04-07
Anticipated expiration: 2038-08-29
Also published as: CN108898892A

Abstract

The invention relates to an English word teaching device, which comprises a base and a disc-shaped shell arranged on the base, wherein an annular turntable is arranged on the shell, a plurality of through holes are circumferentially distributed on the annular turntable, a plurality of letter cards are arranged in the through holes, a bent groove and a rotating arm are arranged on the shell and are arranged on the front side of the annular turntable, one end of the rotating arm is hinged with the shell, and the other end of the rotating arm is provided with a through hole which is coaxially arranged with any through hole; a rotation limiting groove which is matched with the rotating arm and communicated with the bent groove is formed in the shell; there is the horizontal pin of arranging curved groove below in on the casing, the up end of horizontal pin and the lower terminal surface parallel and level of horizontal spout, the one end and the casing of horizontal pin are articulated, there is the fan-shaped groove that matches with horizontal pin on the casing, there is the driving lever that one end and horizontal pin are connected on the horizontal pin, the other end of driving lever has lock nut who arranges the casing in through threaded connection, there is the export groove of intercommunication fan-shaped groove on the casing, there is the blend arm in the export inslot, the one end and the casing elasticity of blend arm are articulated, the other end of blend arm is arranged in the fan-shaped inslot.

Description

English word teaching device

Technical Field

The invention relates to the technical field of teaching tools, in particular to an English word teaching device.

Background

In the English learning process, word accumulation is particularly important, English can be learned well only by continuously increasing the vocabulary, but the learning and memory of English words are mainly completed by repeated writing and reciting at present, and the writing process is monotonous and tedious, lacks interest, and is very easy to make students boring and affecting the learning effect; meanwhile, repetitive writing can cause the brain to form short-term hand action memory rather than real word memory, so that the situation that some letters in words are difficult to determine in spelling due to fluent writing and misspelling often occurs.

In addition, the classroom teaching examination is also performed by means of writing on the blackboard, the writing mode lacks subjective interactivity of classroom teaching, cannot fully concentrate the attention of students and mobilize the enthusiasm of students, and can become a burden of the students over time, so that the students gradually lose learning interest.

Disclosure of Invention

Aiming at the situation, in order to make up for the technical defects in the prior art, the invention provides an English word teaching device, which is used for solving the problems of repetition, monotony and lack of interactivity in the English learning process.

The technical scheme for solving the problem is as follows: the rotary type plate-shaped card reading device comprises a base and a disc-shaped shell which is arranged on the base in a front-back mode and provided with an axis, wherein the shell is provided with a rotatable annular turntable which is coaxial with the shell, the annular turntable is provided with a plurality of through holes which are distributed circumferentially and are arranged in parallel to the axial direction of the annular turntable, a plurality of circular letter cards which are arranged in parallel along the axial direction of the through holes and are matched with the through holes are arranged in the through holes, and the letter cards can slide in the through holes along the axial direction of the through holes; the shell is provided with a curved groove which is arranged on the front side of the annular turntable and matched with the letter plate, and the rear end surface of the curved groove is flush with the front end surface of the annular turntable; the curved groove is formed by smoothly connecting a horizontal sliding groove and an inclined straight groove arranged above the horizontal sliding groove through the close end, and when the annular turntable rotates, the through holes are sequentially communicated with the upper end of the inclined straight groove; the shell is provided with a rotating arm which is arranged on the front side of the rotating disc and is arranged above the horizontal sliding groove, one end of the rotating arm is hinged with the shell along the direction parallel to the axis of the shell, the other end of the rotating arm is provided with a through hole which is arranged parallel to the axis of the shell, the through hole is coaxially arranged with any one through hole, the diameter of the through hole is smaller than the outer diameter of the letter plate, the letter plate in the through hole can be checked through the through hole, and the upper end of the rotating arm can block the letter plate; the shell is provided with a rotation limiting groove matched with the rotating arm, the rotation limiting groove is communicated with the upper end of the inclined straight groove, and when the rotating arm rotates leftwards, namely in the direction far away from the inclined straight groove, so that the through hole and the through hole are completely staggered, the corresponding letter plate is not blocked by the rotating arm any more; the shell is provided with a horizontal stop lever arranged below the horizontal sliding chute, the upper end surface of the horizontal stop lever is used as the lower end surface of the horizontal sliding chute, one end of the horizontal stop lever is hinged with the shell, the shell is provided with a fan-shaped groove which is arranged below the horizontal sliding chute and matched with the horizontal stop lever, the fan-shaped groove is communicated with the horizontal sliding chute, the horizontal stop lever is provided with a shift lever which is arranged in parallel with the axial direction of the shell, one end of the shift lever is connected with the horizontal stop lever, the other end of the shift lever penetrates out of the shell and is arranged outside the shell, the shell is provided with a abdication groove matched with the shift lever, the other end of the shift lever is connected with a locking nut arranged outside the shell through a screw thread, the shell is provided with an outlet groove communicated with the outside of the shell and the fan-shaped groove, the outlet groove is arranged along the radial direction of the rotating axial line of the horizontal stop lever, under the action of the torsion force of the torsion spring, the blocking arm rotates anticlockwise, namely rotates towards the direction of the horizontal blocking rod, so that the blocking arm inclines in the outlet groove to block the letter cards corresponding to the position of the outlet groove from entering the outlet groove.

The invention has ingenious structure and strong interest, can highly concentrate the attention of students on English letters to be found, thereby obtaining correct words and being beneficial to increasing the deep memory of the students on the words; meanwhile, the spelling of the words by the invention is both learning and entertainment, and the interest of learning the words can be increased.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a cross-sectional view a-a of the present invention.

Fig. 3 is a sectional view taken along line B-B of fig. 2 according to the present invention.

Fig. 4 is a cross-sectional view taken along line C-C of fig. 2 in accordance with the present invention.

Fig. 5 is a cross-sectional view taken along line D-D of fig. 3 in accordance with the present invention.

Fig. 6 is an axial cross-sectional view of the present invention.

Fig. 7 is a perspective cross-sectional view of the present invention.

FIG. 8 is a cross-sectional axial cross-sectional view of the present invention.

Fig. 9 is a cross-sectional perspective view of the present invention.

Fig. 10 is a half-sectional front view of the alphabet plate of the present invention.

Fig. 11 is a cross-sectional view E-E of fig. 10 in accordance with the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 11, the invention comprises a base 1 and a disc-shaped shell 2 arranged on the base 1 in front and back of an axis, wherein the shell 2 is provided with a rotatable annular turntable 3 coaxially arranged with the shell 2, the annular turntable 3 is provided with a plurality of through holes 4 which are distributed circumferentially and arranged in parallel with the axis direction of the annular turntable 3, a plurality of circular letter cards 5 which are arranged in parallel along the axis direction of the through holes 4 and matched with the through holes 4 are arranged in the through holes 4, and the letter cards 5 can slide in the through holes 4 along the axis direction of the through holes 4; the shell 2 is provided with a curved groove 6 which is arranged at the front side of the annular turntable 3 and matched with the letter plate 5, and the rear end surface of the curved groove 6 is flush with the front end surface of the annular turntable 3; the curved groove 6 is formed by smoothly connecting a horizontal sliding groove 601 and an inclined straight groove 602 arranged above the horizontal sliding groove 601 through the close ends, and when the annular turntable 3 rotates, the through holes 4 are sequentially communicated with the upper end of the inclined straight groove 602; the shell 2 is provided with a rotating arm 7 which is arranged on the front side of the turntable 3 and is arranged above the horizontal sliding groove 601, one end of the rotating arm 7 is hinged with the shell 2 along the direction parallel to the axis of the shell 2, the other end of the rotating arm 7 is provided with a through hole 8 which is arranged parallel to the axis of the shell 2, the through hole 8 is coaxially arranged with any through hole 4, the diameter of the through hole 8 is smaller than the outer diameter of the letter plate 5, the letter plate 5 in the through hole 4 can be checked through the through hole 8, and the upper end of the rotating arm 7 can block the letter plate 5; the shell 2 is provided with a rotation limiting groove 9 matched with the rotating arm 7, the rotation limiting groove 9 is communicated with the upper end of the inclined straight groove 602, when the rotating arm 7 rotates leftwards, namely towards the direction far away from the inclined straight groove 602, so that the through hole 8 and the through hole 4 are completely staggered, the corresponding letter cards 5 are not blocked by the rotating arm 7 any more, a plurality of letter cards 5 slide forwards, and the letter card 5 arranged at the forefront enters the rotation limiting groove 9 and slides downwards along the inclined straight groove 602 under the action of self gravity; the shell 2 is provided with a horizontal stop lever 10 arranged below the horizontal sliding groove 601, the upper end surface of the horizontal stop lever 10 is used as the lower end surface of the horizontal sliding groove 601, one end of the horizontal stop lever 10 is hinged with the shell 2, the shell 2 is provided with a fan-shaped groove 11 which is arranged below the horizontal sliding groove 601 and matched with the horizontal stop lever 10, the fan-shaped groove 11 is communicated with the horizontal sliding groove 601, the horizontal stop lever 10 is provided with a shift lever 12 which is arranged in parallel with the axial direction of the shell 2, one end of the shift lever 12 is connected with the horizontal stop lever 10, the other end of the shift lever 12 penetrates out of the shell 2 and is arranged outside the shell 2, the shell 2 is provided with a yielding groove 13 matched with the shift lever 12, the other end of the shift lever 12 is connected with a locking nut 14 which is arranged outside the shell 2 through a thread, the shell 2 is provided with an outlet groove 15 which is communicated with the outside of the shell 2 and the fan-shaped groove 11, the, one end of the blocking arm 16 is elastically hinged with the shell 2 through a torsion spring, the other end of the blocking arm 16 is arranged in the fan-shaped groove 11, and under the action of the torsion force of the torsion spring, the blocking arm 16 rotates anticlockwise, namely rotates towards the direction of the horizontal blocking rod 10, so that the blocking arm 16 inclines in the outlet groove 15, and the letter cards 5 corresponding to the position of the outlet groove 15 are prevented from entering the outlet groove 15.

Preferably, the rotating arm 7 is hinged with the housing 2 through a rotating shaft 17 parallel to the axial direction of the housing 2, the housing 2 is provided with a sliding groove 18 coaxially matched with the rotating shaft 17, one end of the rotating shaft 17 is arranged in the sliding groove 18, and the other end of the rotating shaft 17 is arranged outside the housing 2, so that a structure that the rotating shaft 17 axially slides in the sliding groove 18 is formed; the rotating arm 7 is provided with a cam groove 19 spirally arranged along the axis of the rotating shaft 17, the rotating shaft 17 is provided with a cam push rod 20 matched with the cam groove 19, the cam push rod 20 is arranged in the cam groove 19, and when the rotating shaft 17 slides in the sliding groove 18, the rotating arm 7 and the rotating shaft 17 generate relative rotation under the transmission action of the cam groove 19 and the cam push rod 20; one end of the rotating shaft 17, which is arranged in the sliding groove 18, is provided with a spline groove 21 which is coaxial with the rotating shaft 17, the shell 2 is provided with a spline 22 which is arranged in the sliding groove 18 and matched with the spline groove 21, and when the rotating shaft 17 slides in the sliding groove 18, the spline 22 is inserted into the spline groove 21 so that the rotating shaft 17 cannot rotate; the sliding groove 18 is provided with a first spring 23 sleeved on the periphery of the spline 22, one end of the first spring 23 is in contact with the housing 2, the other end of the first spring 23 is in contact with the rotating shaft 17, and under the elastic force of the first spring 23, the rotating shaft 17 slides towards the outside of the sliding groove 18 and drives the rotating arm 7 to rotate towards the inclined straight groove 602 through the cam groove 19 and the cam push rod 20.

Preferably, the rotating arm 7 is hinged with the housing 2 through a rotating shaft 17 parallel to the axial direction of the housing 2, a sliding groove 18 coaxially matched with the rotating shaft 17 is arranged on the housing 2, one end of the rotating shaft 17 is arranged in the sliding groove 18, and the other end of the rotating shaft 17 is arranged outside the housing 2; the annular turntable 3 is provided with an inner gear ring 24, the shell 2 is provided with a gear 25 engaged with the inner gear ring 24, and the gear 25 and the rotating shaft 17 are coaxially and slidably connected through a key and a key groove.

Preferably, the rotating shaft 17 has a flange 26 disposed in the housing 2, the rotating shaft 17 is coaxially sleeved with a push ring 27 disposed between the rotating shaft 17 and the rotating arm 7, the rotating arm 7 has a cam groove 19 spirally disposed along the axis of the rotating shaft 17, the push ring 27 has a cam follower 20 matching with the cam groove 19, the cam follower 20 is disposed in the cam groove 19, the rotating shaft 17 is sleeved with a friction plate 28 arranged between the flange 26 and the propelling ring 27, the rotating shaft 17 is sleeved with a second spring 29 arranged on the other side of the propelling ring 27, one end of the second spring 29 is contacted with the shell 2, the other end of the second spring 29 is contacted with the propelling ring 27, under the action of the force of the second spring 29, the thrust ring 27 slides in the direction of the flange 26 and is pressed into contact with the housing 2, when the rotating shaft 17 rotates, the rotating friction between the propelling ring 27 and the rotating shaft 17 is small, so that the propelling ring 27 does not rotate along with the rotating shaft 17; when the rotating shaft 17 slides along the self-axis towards the sliding slot 18, the flange 26 drives the friction plate 28 to move and enables the friction plate 28 to be in pressing contact with the pushing ring 27, and further drives the pushing ring 27 to move simultaneously, and due to the action of the pushing force generated when the rotating shaft 17 moves and the elastic force of the second spring 29, the friction plate 28 is clamped by the flange 26 and the pushing ring 27, so that the pushing ring 27 cannot rotate on the rotating shaft 17, and further the rotating arm 7 generates relative rotation on the shell 2 in the direction away from the inclined straight slot 602 under the transmission action of the cam slot 19 and the cam push rod 20.

Preferably, the letter plate 5, the third spring 30 and the stopper 31 are sequentially arranged in the through hole 4, and the letter plate 5 slides towards the curved groove 6 under the elastic force of the third spring 30.

Preferably, the alphabet plate 5 comprises an annular outer ring 501, an eccentric gyroscope 502 which coaxially rotates with the annular outer ring 501 is arranged inside the annular outer ring 501, two end faces of the eccentric gyroscope 502 are respectively provided with a patch 503, and the patches 503 are provided with english letters; when the annular outer ring 501 rotates or rolls, the eccentric gyroscope 502 swings in real time under the action of the gravity of the eccentric gyroscope to always keep the same vertical position, so that the English letters on the paster 503 can always keep the direction of the font unchanged, and the English letters can be conveniently checked and read.

Preferably, the housing 2 is formed by fastening the front plate 201 and the rear cover 202 by bolts or by fastening by a snap, so as to facilitate the installation of the components inside the housing 2.

Preferably, the shell 2 is provided with an observation window corresponding to the through hole 8, and a first baffle 32 made of transparent material is embedded in the observation window; a reading window corresponding to the position of the horizontal chute 601 is arranged on the shell 2, and a second baffle 33 made of transparent material is embedded in the reading window; the annular turntable 3 is provided with a radial through hole 4 and a letter card inlet 34 outside the annular turntable 3, the shell 2 is provided with a jack 35 corresponding to the through hole 4 corresponding to the through hole 8 and matched with the letter card inlet 34, and the letter card 5 can be placed in the through hole 4 through the jack 35 and the letter card inlet 34.

Preferably, the end of the rotating shaft 17 disposed outside the housing 2 is provided with a handle 36.

Preferably, one end of the first spring 23 contacts the housing 2, and the other end of the first spring 23 contacts the rotating shaft 17 through the spacer 37 or the thrust bearing, so that when the rotating shaft 17 rotates, the spacer 37 or the thrust bearing can achieve a better sliding effect, and the friction resistance generated by the direct contact between the rotating shaft 17 and the first spring 23 and the torsion generated by the first spring 23 are reduced, so that the rotation of the rotating shaft 17 is smoother.

When the invention is used, the letter cards 5 in different through holes 4 correspond to the through holes 8 by rotating the annular turntable 3, corresponding letters are selected by observing through the first blocking piece 32, the selected letter cards 5 are pushed forwards to fall into the bent groove 6, when the selected letter cards 5 all fall into the horizontal sliding groove 601, the plurality of letter cards 5 form a complete English word and can be read through the second blocking piece 33, and the specific operation process is as follows:

the handle 36 is rotated to drive the gear 25 to rotate by the rotating shaft 17, and the annular turntable 3 rotates immediately under the meshing action of the internal gear ring 24 and the gear 25; because the rotating arm 7 blocks and the diameter of the through hole 8 is smaller than the outer diameter of the letter plate 5, when the through hole 4 rotates to coaxially correspond to the through hole 8, the letter plate 5 cannot be ejected forwards due to the blocking of the rotating arm 7, so that the rotation of the annular turntable 3 cannot be blocked by the ejected letter plate 5, and the annular turntable 3 can continuously rotate to find the letter to be selected; meanwhile, since the rotary shaft 17 is subjected to the elastic force of the first spring 23 at this time, the rotary shaft 17 is not displaced in the axial direction when it is not subjected to the axial thrust, and the push ring 27 is in press-contact with the housing 2 by the elastic force of the second spring 29, which causes a frictional force between the push ring 27 and the housing 2, and the friction plates 28 are not pressed by the flange 26 and the push ring 27, so that when the rotary shaft 17 rotates, the push ring 27 is kept stationary and the corresponding rotary arm 7 is not rotated.

When the annular turntable 3 rotates until the letter cards 5 to be selected correspond to the through holes 8, the rotation is stopped, and the handle 36 is pressed down to enable the rotating shaft 17 to slide backwards along the sliding groove 18; when the rotating shaft 17 slides backwards, the spline 22 approaches and is inserted into the spline groove 21, so that the rotating shaft 17 cannot rotate, meanwhile, the friction plate 28 is pushed by the flange 26 to approach the pushing ring 27 and generate pressing contact, so that the pushing ring 27 is pushed to move backwards, at the same time, under the action of the elastic force of the second spring 29 applied to the pushing ring 27 and the pushing force applied to the flange 26, the friction force between the friction plate 28 and the pushing ring 27 is increased, so that the pushing ring 27 cannot rotate, and the rotating arm 7 rotates under the transmission action of the cam groove 19 and the cam push rod 20, so that the through hole 8 is staggered with the selected letter card 5; when the through hole 8 and the through hole 4 are completely staggered, the selected letter card 5 is no longer blocked by the rotating arm 7, and the frontmost selected letter card 5 slides forwards and is pressed with the front groove wall of the inclined straight groove 602 under the action of the elastic force of the third spring 30, and at the moment, the letter card 5 is pressed on the groove wall of the inclined straight groove 602 and cannot slide down due to the elastic force of the third spring 30; gradually releasing the handle 36, the rotating shaft 17 is reset and slides forwards under the elastic force of the first spring 23, the pushing ring 27 is still subjected to the friction force of the friction plate 28 when the rotating shaft 17 is reset and slides due to the elastic force of the second spring 29, so the rotating arm 7 generates reset rotation under the transmission action of the cam groove 19 and the cam push rod 20, the through hole 8 is corresponding to the through hole 4 where the selected letter card 5 is positioned again, and the forefront letter card 5 pops forwards at the moment, so the rotating arm 7 is reset and rotates to stir downwards to enable the letter card 5 to be free from the elastic force of the third spring 30 and roll down along the inclined straight groove 602; referring to fig. 3, after the alphabet cards 5 roll down to the smooth connection between the horizontal sliding groove 601 and the inclined straight groove 602, the alphabet cards 5 roll to the left under the inertia of their own motion and stay on the horizontal stop lever 10.

After the selected plurality of letter cards 5 are sequentially rolled into the horizontal sliding groove 601 according to the above operation, the plurality of letter cards 5 are horizontally arranged on the horizontal stop lever 10 in sequence to form a spelled english word; meanwhile, due to the real-time deflection of the eccentric gyroscope 502, the letters on the letter cards 5 always keep the fonts upward, and the reading and the display of words are greatly facilitated.

After the word spelling is finished each time, the letter cards 5 in the horizontal sliding groove 601 need to be taken out in time, the locking nut 14 can be loosened and the shifting lever 12 can be shifted downwards, the horizontal blocking rod 10 is inclined immediately, the movable end part of the horizontal blocking rod presses down one end of the blocking arm 16, which is arranged in the fan-shaped groove 11, so that the blocking arm 16 rotates downwards and is attached to the lower groove wall of the outlet groove 15, the letter cards 5 sequentially roll downwards under the action of the gravity of the letter cards and fall down through the outlet groove 15, and the falling letter cards 5 are collected and stored.

Because a plurality of same letter cards 5 can be placed in each through hole 4 in parallel, continuous multiple word spelling can be carried out by utilizing the invention; in order to achieve a more continuous use effect without complicated disassembly and assembly operations, after spelling many times, the collected and stored alphabet cards 5 can be put into the corresponding through holes 4 of the annular turntable 3 again by using the insertion holes 35 and the alphabet card inlets 34, and the operation method comprises the following steps: the annular turntable 3 is rotated according to letters on the letter cards 5 to enable the through holes 4 corresponding to the letter cards 5 to correspond to the through holes 8, then the letter cards 5 are inserted into the letter card inlets 34 through the jacks 35 and completely enter the through holes 4 to complete installation of the letter cards 5, and the collected and stored plurality of letter cards 5 are respectively placed into the corresponding through holes 4 according to the operation method and then can be continuously used for multiple times; in order to make the installation of the letter cards 5 smoother, the outer edges of the letter cards 5 can be designed to be smooth circular arc shapes, and meanwhile, the positions of the letter card inlets 34 can be arranged between any two adjacent letter cards 5 in the same through hole 4, so that the letter cards 5 are prevented from being blocked by other existing letter cards 5 in the through hole 4 when being inserted, and the arrangement is a common technical means for solving similar problems by technical personnel in the field, and is not repeated in the specification.

The invention is used for spelling English words, so that the attention of students can be highly focused on the English letters to be found, thereby obtaining correct words, and the process is favorable for increasing the memory of the students on the words; different from the traditional writing operation, the invention needs the students to use the hands and the brains simultaneously, not only needs to determine each English letter forming the word, but also needs to select the English letters in sequence by rotating the handle, and enables each letter to fall into the bent groove in sequence by pressing the handle, and then the English letters can be consulted.

Meanwhile, compared with the boring and tedious repeated writing, the method for spelling words is a learning process and an entertainment process, and can be used as a word display teaching aid and a classroom examination tool when used in a classroom, so that teachers and classmates participate together, and the interactivity of classroom teaching is improved.

Claims

1. An English word teaching device comprises a base (1) and a disc-shaped shell (2) arranged on the base (1), and is characterized in that an annular turntable (3) which coaxially rotates with the shell (2) is arranged on the shell (2), a plurality of axially-arranged through holes (4) which are circumferentially distributed are formed in the annular turntable (3), a plurality of parallel letter cards (5) are arranged in the through holes (4), and the letter cards (5) can axially slide in the through holes (4); the shell (2) is provided with a curved groove (6) which is arranged on the outer side of the end face of the annular turntable (3) and matched with the letter plate (5), and the curved groove (6) is formed by smoothly connecting a horizontal sliding groove (601) and an inclined straight groove (602) which is arranged above the horizontal sliding groove (601) through close ends; a rotating arm (7) arranged on the outer side of the end face of the rotating disc (3) is arranged on the shell (2), one end of the rotating arm (7) is axially hinged with the shell (2), a through hole (8) arranged axially is formed in the other end of the rotating arm (7), the through hole (8) is coaxially arranged with any through hole (4), and the diameter of the through hole (8) is smaller than the outer diameter of the letter plate (5); a rotation limiting groove (9) matched with the rotating arm (7) is formed in the shell (2), and the rotation limiting groove (9) is communicated with the upper end of the inclined straight groove (602); the device is characterized in that a horizontal stop lever (10) is arranged below a horizontal sliding groove (601) on a shell (2), the upper end face of the horizontal stop lever (10) is flush with the lower end face of the horizontal sliding groove (601), one end of the horizontal stop lever (10) is hinged with the shell (2), a fan-shaped groove (11) matched with the horizontal stop lever (10) is arranged on the shell (2), a shift lever (12) is axially arranged on the horizontal stop lever (10), one end of the shift lever (12) is connected with the horizontal stop lever (10), the other end of the shift lever (12) penetrates through the shell (2) and is arranged outside the shell (2), a yielding groove (13) matched with the shift lever (12) is arranged on the shell (2), the other end of the shift lever (12) is connected with a locking nut (14) through a thread, an outlet groove (15) communicating the outside of the shell (2) with the fan-shaped groove (11) is arranged on the shell (2), and the outlet groove (15) is radially arranged along the rotating axis of, a stop arm (16) is arranged in the outlet groove (15), one end of the stop arm (16) is elastically hinged with the shell (2) through a torsion spring, the other end of the stop arm (16) is arranged in the fan-shaped groove (11), and under the action of the torsion force of the torsion spring, the stop arm (16) rotates towards the direction of the horizontal stop rod (10) to enable the stop arm (16) to incline in the outlet groove (15).

2. The English word teaching device according to claim 1, wherein the rotating arm (7) is hinged with the housing (2) through a rotating shaft (17) parallel to the axial direction of the housing (2), the housing (2) is provided with a sliding groove (18) coaxially matched with the rotating shaft (17), one end of the rotating shaft (17) is arranged in the sliding groove (18), and the other end of the rotating shaft (17) is arranged outside the housing (2) to form a structure that the rotating shaft (17) axially slides in the sliding groove (18); the rotating arm (7) is provided with a cam groove (19) which is spirally arranged along the axis of the rotating shaft (17), the rotating shaft (17) is provided with a cam push rod (20) matched with the cam groove (19), and the cam push rod (20) is arranged in the cam groove (19); one end of the rotating shaft (17) arranged in the sliding groove (18) is provided with a spline groove (21) which is coaxial with the rotating shaft (17), the shell (2) is provided with a spline (22) which is arranged in the sliding groove (18) and matched with the spline groove (21), and when the rotating shaft (17) slides in the sliding groove (18), the spline (22) is inserted into the spline groove (21) to enable the rotating shaft (17) not to rotate; a first spring (23) sleeved on the periphery of the spline (22) is arranged in the sliding groove (18), one end of the first spring (23) is in contact with the shell (2), and the other end of the first spring (23) is in contact with the rotating shaft (17).

3. An English word teaching device according to claim 1, wherein the rotating arm (7) is hinged with the housing (2) through a rotating shaft (17) parallel to the axial direction of the housing (2), the housing (2) is provided with a sliding groove (18) coaxially matched with the rotating shaft (17), one end of the rotating shaft (17) is arranged in the sliding groove (18), and the other end of the rotating shaft (17) is arranged outside the housing (2); an inner gear ring (24) is arranged on the annular turntable (3), a gear (25) meshed with the inner gear ring (24) is arranged on the shell (2), and the gear (25) is coaxially and slidably connected with the rotating shaft (17).

4. An English word teaching device according to any one of claims 2 or 3, wherein the shaft (17) has a flange (26) disposed in the housing (2), the shaft (17) is coaxially sleeved with a push ring (27) disposed between the shaft (17) and the rotating arm (7), the rotating arm (7) has a cam groove (19) spirally disposed along the axis of the shaft (17), the push ring (27) has a cam follower (20) matching the cam groove (19), the cam follower (20) is disposed in the cam groove (19), the shaft (17) is sleeved with a friction plate (28) disposed between the flange (26) and the push ring (27), the shaft (17) is sleeved with a second spring (29) disposed on the other side of the push ring (27), one end of the second spring (29) contacts the housing (2), the other end of the second spring (29) contacts the push ring (27), under the action of the elastic force of the second spring (29), the pushing ring (27) slides towards the flange (26) and is pressed and contacted with the shell (2).

5. The English word teaching device according to claim 1, wherein the through hole (4) is sequentially provided with the letter plate (5), the third spring (30) and the plug (31), and the letter plate (5) slides towards the curved groove (6) under the elastic force of the third spring (30).

6. The English word teaching device according to claim 1, wherein the alphabet plate (5) comprises an annular outer ring (501), an eccentric gyroscope (502) rotating coaxially with the annular outer ring (501) is arranged inside the annular outer ring (501), two end faces of the eccentric gyroscope (502) are respectively provided with a patch (503), and English letters are arranged on the patches (503).

7. An english word teaching device according to claim 1, wherein the housing (2) is formed by fastening a front plate (201) and a rear cover (202) by bolts.

8. The English word teaching device according to claim 1, wherein the housing (2) is provided with a viewing window corresponding to the through hole (8), and a first blocking piece (32) made of transparent material is embedded in the viewing window; a reading window corresponding to the position of the horizontal sliding chute (601) is arranged on the shell (2), and a second blocking sheet (33) made of transparent material is embedded in the reading window; annular carousel (3) on have radial intercommunication through-hole (4) and annular carousel (3) outside alphabet tablet import (34), casing (2) are gone up and are corresponded with through hole (8) and with alphabet tablet import (34) assorted jack (35).

9. An english word teaching device according to any one of claims 2 or 3, wherein the end of the rotary shaft (17) disposed outside the housing (2) is provided with a handle (36).

10. An english word teaching device according to claim 2, wherein one end of the first spring (23) is in contact with the housing (2), and the other end of the first spring (23) is in contact with the rotary shaft (17) via a spacer (37).