CN209912235U

CN209912235U - Language mode presentation device for Chinese teaching

Info

Publication number: CN209912235U
Application number: CN201920332732.9U
Authority: CN
Inventors: 黄芳炜
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-16
Filing date: 2019-03-16
Publication date: 2020-01-07
Anticipated expiration: 2029-03-16

Abstract

The utility model relates to a language mode demonstration device for Chinese teaching, which comprises a shell, a contact pin and an inverter, wherein the bottom of the shell is fixedly connected with a first connecting end, the top of the shell is fixedly connected with a second connecting end, the top of the second connecting end is fixedly connected with a connecting ring, the outer side of the connecting ring is provided with a conical convex ring, the bottom of the first connecting end is provided with a connecting groove corresponding to the connecting ring, the utility model prevents the shell from being stably connected with the contact pin by inserting the connecting ring of the second connecting end into the connecting groove of the first connecting end to ensure that the conical convex ring is embedded into the conical concave ring and the first connecting end and the second connecting end are fixedly connected by matching a nut and a thread groove, and ensures that the inverter and the connecting post are not easy to rotate by connecting the connecting hole of the inverter with the connecting post, the connecting post and the connecting, and after the inverter is fixedly screwed with the fixed plate through the bolt, the connection stability of the inverter and the shell is better.

Description

Language mode presentation device for Chinese teaching

Technical Field

The utility model relates to a language mode presentation device for chinese teaching belongs to chinese teaching device field.

Background

The Chinese teaching is boring, the teacher mostly only explains the text content in the textbook when giving lessons, the simple text explanation can not arouse the learning interest of students, some of the related Chinese lessons describe beautiful backgrounds or the scenes of stories, the teacher can not feel by explanation, the teacher also can hear more abstract, and the student does not feel personally on the scene, therefore, the picture teaching is adopted in the teaching, the backgrounds or scenes of some Chinese lessons are reproduced through pictures, the student can deepen memory, the lessons are very helpful to understand, but no special picture demonstration device is provided at present, the teacher can hold the pictures to see students when the pictures are demonstrated, the interest of the students can not be aroused, and the improvement of the teaching quality is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who solves overcomes current defect, a language mode presentation device for chinese teaching is provided, the utility model discloses an insert the go-between of second link in the spread groove of first link, make the protruding circle of toper imbed in the toper concave ring, and use nut and thread groove's cooperation, with first link and second link fixed connection, it is comparatively stable to prevent to be connected between casing and the contact pin, and be connected through the connecting hole with the dc-to-ac converter and spliced pole, the difficult rotation between dc-to-ac converter and the spliced pole is guaranteed to positive pentagonal spliced pole and connecting hole, and after fixing the spiro union with dc-to-ac converter and fixed plate through the bolt, the stability of being connected of dc-to-ac converter and casing is better.

In order to solve the technical problem, the utility model provides a following technical scheme:

a language mode demonstration device for Chinese teaching comprises a case, wherein the top of the case is open, a demonstration case is vertically and slidably connected in the case, a rack is fixedly connected at the center of the bottom of the demonstration case, a gear is meshed and connected at one side of the rack, a rotating shaft is fixedly connected at the center of the front side of the gear, one end of the rotating shaft penetrates through the outer wall of the case and is connected with a crank, a positioning disc is fixedly sleeved on the outer side of the rotating shaft, an upper groove and a lower groove are respectively formed in the top and the bottom of an inner cavity of the demonstration case, a driving motor is fixedly mounted at the top of the inner cavity of the upper groove, a driving wheel is fixedly connected at the output end of the bottom of the driving motor, a driving convex block is arranged at one side of the driving wheel, a bearing is embedded at the bottom of the lower groove, a demonstration block is fixedly connected at the, the inner wall of the circular groove is uniformly provided with a semicircular groove corresponding to the driving protrusion block.

Furthermore, a plurality of through holes are uniformly formed in the positioning plate, and a positioning bolt penetrates through one of the through holes.

Furthermore, the outer side of the case is provided with blind screw holes corresponding to one ends of the positioning bolts, and one ends of the positioning bolts are in threaded connection with the blind screw holes.

Further, demonstration pictures are bonded to six side faces of the demonstration block, wheels are arranged on the periphery of the bottom of the case, limiting plates are arranged at the bottom of the rack, and the number of the semicircular grooves is six.

Furthermore, sliding grooves are formed in two sides of the interior of the case, sliding plates are arranged on two sides of the demonstration case and correspond to the sliding grooves, and the sliding plates are connected in the sliding grooves in an embedded mode.

Further, the demonstration case front side is opened and is equipped with the viewing aperture, the viewing aperture size is greater than the demonstration picture, just the inner wall both sides of viewing aperture are equipped with the light.

The utility model discloses beneficial effect: the utility model discloses an extract positioning bolt, the rethread rotates the crank, make it drive gear revolve, the gear revolve is followed to the positioning disk this moment, and drive the rack after the gear revolve and rise or descend, thereby make demonstration case height of adjustment, make things convenient for people's door to watch the picture through the viewing aperture, adjust to suitable high back, pass the through-hole with positioning bolt and insert in the blind screw with the quick-witted case outside, thereby it is fixed with the positioning disk, consequently, make demonstration case highly fixed, and open driving motor and drive the drive wheel and rotate, the drive wheel rotates back drive protruding piece interval with semicircle groove engagement in proper order, consequently, drive the rotation that the demonstration piece is discontinuous, people can see the demonstration picture on every side of demonstration piece in proper order in the viewing aperture.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a block diagram of the present invention;

FIG. 2 is an external view of the present invention;

fig. 3 is a top view of the demonstration block of the present invention.

Reference numbers in the figures: 1. a chassis; 2. a demonstration box; 3. a rack; 4. a gear; 5. a rotating shaft; 6. a crank; 7. positioning a plate; 8. an upper groove; 9. a lower groove; 10. a drive motor; 11. a drive wheel; 12. driving the bump; 13. a bearing; 14. a support shaft; 15. a demonstration block; 16. a circular groove; 17. a semicircular groove; 18. a through hole; 19. positioning the bolt; 20. a limiting plate; 21. a slide plate; 22. a viewing port; 23. an illuminating lamp.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1-3, the utility model provides a technical solution: a language mode demonstration device for Chinese teaching comprises a case 1, wherein the top of the case 1 is open, a demonstration case 2 is vertically and slidably connected in the case 1, a rack 3 is fixedly connected at the center of the bottom of the demonstration case 2, one side of the rack 3 is engaged with a gear 4, a rotating shaft 5 is fixedly connected at the center of the front side of the gear 4, one end of the rotating shaft 5 penetrates through the outer wall of the case 1 and is connected with a crank 6, a positioning disc 7 is fixedly sleeved on the outer side of the rotating shaft 5, the top and the bottom of the inner cavity of the demonstration case 2 are respectively provided with an upper groove 8 and a lower groove 9, the top of the inner cavity of the upper groove 8 is fixedly provided with a driving motor 10, the output end of the bottom of the driving motor 10 is fixedly connected with a driving wheel 11, the output end of the driving motor 10 can be connected with a speed reducer, so that the driving wheel 11 rotates slowly, bearing 13 top has demonstration piece 15 through the 14 rigid couplings of back shaft, just demonstration piece 15's shape is regular hexagon, circular slot 16 has been seted up to demonstration piece 15 top center department, 16 inner walls of circular slot evenly be equipped with the semicircle recess 17 that the protruding piece 12 of drive corresponds.

The positioning disc 7 is uniformly provided with a plurality of through holes 18, one of the through holes 18 is internally provided with a positioning bolt 19 in a penetrating way, the outer side of the case 1 is provided with a blind screw hole corresponding to one end of the positioning bolt 19, one end of the positioning bolt 19 is in threaded connection with the blind screw hole, the positioning bolt 19 penetrates through the through hole 18 and is inserted into the blind screw hole on the outer side of the case 1, so that the positioning disc 7 is fixed, demonstration pictures are bonded on six sides of the demonstration block 15, wheels are arranged on the periphery of the bottom of the case 1 and are convenient to move, a limiting plate 20 is arranged at the bottom of the rack 3 and limits the highest position of the rack 3, the number of the semicircular grooves 17 is six, sliding grooves are formed in two sides inside the case 1, sliding plates 21 are arranged on two sides of the demonstration case 2 corresponding to the sliding grooves, the sliding plates 21 are connected in, demonstration case 2 front side is opened and is equipped with viewing aperture 22, viewing aperture 22 size is greater than the demonstration picture, people can see the demonstration picture on every side of demonstration piece 15 in proper order in viewing aperture 22, just viewing aperture 22 inner wall both sides are equipped with light 23.

The utility model discloses the theory of operation: firstly, the utility model is moved to a proper position, then the driving motor 10 and the illuminating lamp 23 are connected into the 220V commercial power, the positioning bolt 19 is pulled out, and then the crank 6 is rotated to drive the gear 4 to rotate, at the moment, the positioning disk 7 rotates along with the gear 4, and the gear 4 rotates to drive the rack 3 to ascend or descend, so that the height of the demonstration box 2 is adjusted to a proper height, the positioning bolt 19 is inserted into the blind screw hole on the outer side of the case 1 through the through hole 18, thereby fixing the positioning disk 7, so that the height of the demonstration box 2 is fixed, and the driving motor 10 is turned on to drive the driving wheel 11 to rotate, after the driving wheel 11 rotates, the driving convex blocks 12 are meshed with the semicircular grooves 17 at intervals in sequence, so as to drive the demonstration block 15 to rotate, and the demonstration block 15 rotates by about 60 degrees each time, one can see the presentation picture on each side of the presentation block 15 in turn in the viewing port 22.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a language mode presentation device for chinese teaching, includes quick-witted case (1), its characterized in that: the demonstration device is characterized in that the top of the case (1) is opened, the case (1) is vertically and slidably connected with a demonstration box (2), a rack (3) is fixedly connected to the center of the bottom of the demonstration box (2), a gear (4) is meshed and connected to one side of the rack (3), a rotating shaft (5) is fixedly connected to the center of the front side of the gear (4), one end of the rotating shaft (5) penetrates through the outer wall of the case (1) and is connected with a crank (6), a positioning disc (7) is fixedly sleeved on the outer side of the rotating shaft (5), an upper groove (8) and a lower groove (9) are respectively formed in the top and the bottom of an inner cavity of the demonstration box (2), a driving motor (10) is fixedly installed at the inner top of the upper groove (8), a driving wheel (11) is fixedly connected to the output end of the bottom of the driving motor (10), a driving raised block (12) is arranged, bearing (13) top has demonstration piece (15) through back shaft (14) rigid coupling, just the shape of demonstration piece (15) is regular hexagon, circular recess (16) have been seted up to demonstration piece (15) top center department, circular recess (16) inner wall evenly be equipped with semicircular groove (17) that drive protruding piece (12) correspond.

2. A language model demonstration apparatus for Chinese teaching according to claim 1 wherein: a plurality of through holes (18) are uniformly formed in the positioning disc (7), and a positioning bolt (19) penetrates through one of the through holes (18).

3. A language model demonstration apparatus for Chinese teaching according to claim 2 wherein: the outer side of the case (1) is provided with blind screw holes corresponding to one ends of the positioning bolts (19), and one ends of the positioning bolts (19) are in threaded connection with the blind screw holes.

4. A language model demonstration apparatus for Chinese teaching according to claim 1 wherein: six sides of demonstration piece (15) all bond and have the demonstration picture, machine case (1) bottom is equipped with the wheel all around, rack (3) bottom is equipped with limiting plate (20), just semicircle recess (17) quantity is six.

5. A language model demonstration apparatus for Chinese teaching according to claim 1 wherein: the demonstration case is characterized in that sliding grooves are formed in two sides of the interior of the case (1), sliding plates (21) are arranged on two sides of the demonstration case (2) corresponding to the sliding grooves, and the sliding plates (21) are connected in the sliding grooves in an embedded mode.

6. A language model demonstration device for Chinese teaching according to claim 4 wherein: demonstration case (2) front side is opened and is equipped with viewing aperture (22), viewing aperture (22) size is greater than the demonstration picture, just viewing aperture (22) inner wall both sides are equipped with light (23).