CN214386789U

CN214386789U - Teaching aid

Info

Publication number: CN214386789U
Application number: CN202120062454.7U
Authority: CN
Inventors: 俞凯
Original assignee: Jiangxi Institute of Fashion Technology
Current assignee: Jiangxi Institute of Fashion Technology
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-10-15
Anticipated expiration: 2031-01-11

Abstract

The utility model relates to an appurtenance technical field provides a teaching aid, include: a base; the lifting mechanism comprises a fixed rod, a supporting rod and a movable rod, wherein the fixed rod is provided with an accommodating cavity, a second threaded shaft is arranged inside the accommodating cavity, the movable rod is sleeved on the second threaded shaft, one end of the second threaded shaft is provided with a first gear and a second gear which are in meshed connection, the first gear is sleeved on the second threaded shaft, and one end of a transverse shaft is connected with a disc; the frame is connected with the movable rod, the writing board is connected onto the frame, the fixed block and the mounting seat are respectively arranged on two sides of the frame, and the driving motor is mounted on the upper side face of the mounting seat; the side surface of the cleaning plate facing the writing board is provided with brush hair. Through the cooperation of driving motor, first threaded shaft, clipboard, cleaning plate, fixed block and brush hair, can clean the clipboard, avoided the teacher to carry out the loaded down with trivial details of manual cleaning.

Description

Teaching aid

Technical Field

The utility model relates to an appurtenance technical field, concretely relates to teaching aid.

Background

Visual communication this term prevailed in the world design congress held in tokyo, japan in 1960, the contents of which include: the design of newspapers and periodicals environment visual design magazines, poster posters and other printed propaganda materials, and also propagation media such as films, televisions, electronic billboards and the like, wherein the expressive design of transmitting relevant contents to eyes for shaping is collectively called visual transmission design movie posters, the visual transmission design is an active behavior in a visual form for transmitting specific things, most or part of the visual transmission design depends on vision, and is expressed by images in two-dimensional spaces such as marks, typesetting, painting, planar design, illustration, colors, electronic equipment and the like, and in the teaching process of the visual transmission design, some teaching tools such as writing boards and the like are needed to develop education work.

The existing writing board is mostly fixed and cannot be adjusted, the flexibility is not strong, teachers are inconvenient to use when developing education work, and the application range is narrow.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the clipboard among the prior art highly fixed can not be adjusted, and the flexibility is not strong, and the teacher uses inconveniently developing the education during operation, the narrow defect of application scope to a teaching aid is provided.

A teaching aid comprising: a base; the lifting mechanism is arranged on the base and comprises a fixed rod, a supporting rod and a movable rod, the fixed rod is provided with an accommodating cavity, one end of the accommodating cavity is provided with an opening, a second threaded shaft is arranged inside the accommodating cavity, the movable rod is sleeved on the second threaded shaft and is in threaded connection with the second threaded shaft, one end, far away from the opening, of the second threaded shaft is provided with a first gear and a second gear which are in meshed connection, the first gear is sleeved on the second threaded shaft, the second gear is in meshed connection with the first gear through a cross shaft, and one end of the cross shaft extends out of the fixed rod and is connected with a disc;

the writing board is connected to the frame, a fixed block is connected to one side of the top of the frame, an installation seat is arranged on the other side of the top of the frame, a driving motor is installed on the upper side face of the installation seat, and the power output end of the driving motor is connected with a first threaded shaft;

the cleaning plate, the one end of cleaning plate with first threaded shaft is connected, the other end orientation of cleaning plate the bottom of clipboard sets up, the cleaning plate orientation be equipped with the brush hair on the side of clipboard, the brush hair with a side butt setting of clipboard.

Optionally, in the teaching aid, a plurality of universal wheels are fixedly mounted at the bottom of the base.

Optionally, in the teaching aid, the other end of the first threaded shaft is connected with the fixed block through a bearing, the first threaded shaft penetrates through the cleaning plate, the cleaning plate is in threaded connection with the first threaded shaft, and the bristles are matched with the writing board in height.

Optionally, in the teaching aid, the second gear is located inside the accommodating cavity, one end of the cross shaft is connected to an inner wall of the accommodating cavity through a bearing, the other end of the cross shaft penetrates through the fixing rod and is capable of rotating relative to the fixing rod, the cross shaft penetrates through the second gear, and the second gear is in interference fit connection with the cross shaft;

the second threaded shaft is connected with the inner wall of the accommodating cavity through a bearing, the second threaded shaft penetrates through the first gear, and the first gear is connected with the second threaded shaft in an interference fit mode.

Optionally, in the teaching aid, the movable rod is provided with a threaded groove with an opening, the second threaded shaft enters the threaded groove along the opening, one part of the second threaded shaft is located inside the threaded groove, the other part of the second threaded shaft is located outside the threaded groove, and the threaded groove is in adaptive connection with the second threaded shaft;

one part of the movable rod is positioned inside the accommodating cavity, and the other part of the movable rod is positioned outside the accommodating cavity.

Optionally, in the teaching aid, the number of the bases is two, the number of the fixing rods is two, the two fixing rods are respectively located at the tops of the two bases, and the supporting rod is located between the two fixing rods.

Optionally, in the teaching aid, the universal wheels are four, the four universal wheels are respectively located at the bottom of the two bases, and the four universal wheels are provided with brake pads.

Optionally, in the teaching aid, the driving motor is externally connected with a power supply, and the driving motor is electrically connected with the power supply through a wire.

The utility model discloses technical scheme has following advantage:

the utility model provides an among the teaching aid, through driving motor, first threaded spindle, the clipboard, the cleaning plate, the cooperation of fixed block and brush hair is used, can clean the clipboard, the trouble of having avoided the teacher to carry out manual cleaning, time saving and labor saving, alleviate teacher's intensity of labour, therefore, the clothes hanger is strong in practicability, through the dead lever, the movable rod, the cross axle, first gear, the second threaded spindle, a groove, the thread groove, the cooperation of second gear and disc is used, can highly adjust frame and clipboard, the flexibility is strong, make the teacher use more convenient when developing teaching work, can satisfy the demand of different field of vision scopes, application scope has been enlarged, it highly fixed unable regulation mostly to have overcome clipboard among the prior art, the flexibility is not strong, the teacher uses inconveniently when developing teaching work, the narrow defect of application scope.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of a teaching aid of the present invention;

FIG. 2 is a schematic front view of a fixing rod of the lifting mechanism of FIG. 1;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;

description of reference numerals:

1. a universal wheel; 2. a base; 3. fixing the rod; 4. a support bar; 5. a movable rod; 6. cleaning the plate; 7. a frame; 8. a first threaded shaft; 9. a writing board; 10. a drive motor; 11. a mounting seat; 12. a horizontal axis; 13. a first gear; 14. a second threaded shaft; 15. an accommodating chamber; 16. a thread groove; 17. a second gear; 18. a disc; 19. a fixed block; 20. and (3) brush hairs.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

This embodiment has recorded a teaching aid, mainly used teacher develops educational work when giving lessons in imparting knowledge to students, refer to fig. 1-3, this teaching aid includes base 2, elevating system, frame 7, clearance board 6 and clipboard 9, wherein, can be at a plurality of universal wheels 1 of base 2's bottom fixed mounting, the installation of this universal wheel 1 can remove base 2, can set up universal wheel 1 base 2 into two, be provided with four, four universal wheels 1 are located the bottom of two bases 2 respectively, and four universal wheels 1 all are provided with the brake block, in order to realize the removal and the brake to teaching aid, can be applicable to multiple occasion, this elevating system sets up on this base 2, can adjust frame 7 and clearance board 6's height, this clipboard 9 sets up on this frame 7.

Specifically, referring to fig. 1 to 3, the lifting mechanism includes a fixed rod 3, a supporting rod 4 and a movable rod 5, wherein the fixed rod 3 is provided with an accommodating cavity 15, one end of the accommodating cavity 15 is provided with an opening, a second threaded shaft 14 is provided inside the accommodating cavity 15, the movable rod 5 is sleeved on the second threaded shaft 14 and is in threaded connection with the second threaded shaft 14, one end of the second threaded shaft 14, which is far away from the opening, is provided with a first gear 13 and a second gear 17 which are in meshed connection, the first gear 13 is sleeved on the second threaded shaft 14, the second gear 17 is in meshed connection with the first gear 13 through a transverse shaft 12, one end of the transverse shaft 12 extends out of the fixed rod 3 and is connected with a circular disc 18, the frame 7 is connected with the movable rod 5, and the frame 7 can be connected with one end of the movable rod 5, which is far away from the opening.

Specifically, the second gear 17 is disposed inside the housing cavity 15, one end of the horizontal shaft 12 is connected to the inner wall of the housing cavity 15 through a bearing, the other end of the horizontal shaft 12 penetrates the outside of the fixing rod 3 and is connected to the disc 18, a through hole into which the horizontal shaft 12 is inserted is formed in the first screw shaft 8, the horizontal shaft 12 is rotatable relative to the first screw shaft 8 after being inserted into the through hole, the horizontal shaft 12 penetrates the second gear 17, the second gear 17 and the horizontal shaft 12 are connected in an interference fit manner, the connection between the horizontal shaft 12 and the second screw shaft 14 and the second gear 17 is completed, after the second gear 17 is mounted on the horizontal shaft 12, the positions of the second gear 17 and the first gear 13 are adjusted so that the second gear 17 can be in meshing transmission connection with the first gear 13, the horizontal shaft 12 is driven to rotate relative to the second screw shaft 14 by rotating the disc 18, the horizontal shaft 12 plays a role of driving the first gear 13 and the second gear 17 to mesh transmission, the second threaded shaft 14 can be limited from moving along the accommodating cavity 15, and the second threaded shaft 14 is limited.

At second threaded spindle 14 pivoted in-process, movable rod 5 can carry out elevating movement for second threaded spindle 14 relatively, and then carry out elevating movement along holding chamber 15 of dead lever 3, carry out elevating movement with the realization to drive clipboard 9 on the frame 7 effect of elevating movement, can highly adjust frame 7 and clipboard 9, the flexibility is strong, it is more convenient to make the teacher use when developing the teaching work, can satisfy the demand of different field of vision scope, application scope has been enlarged, it highly is fixed can not adjust mostly to have overcome clipboard 9 among the prior art, the flexibility is not strong, the teacher uses inconveniently when developing the education work, the narrow defect of application scope.

In this embodiment, the second threaded shaft 14 and the inner wall of the accommodating cavity 15 may be connected by a bearing, the second threaded shaft 14 penetrates through the first gear 13, and the first gear 13 and the second threaded shaft 14 are connected by interference fit.

Specifically, the movable rod 5 may be provided with a threaded groove 16 having an opening, the second threaded shaft 14 enters the threaded groove 16 along the opening of the threaded groove 16, thereby achieving threaded connection between the movable rod 5 and the second threaded shaft 14, the movable rod 5 can also perform stable lifting movement relative to the second threaded shaft 14, a part of the second threaded shaft 14 may be located inside the threaded groove 16, another part of the second threaded shaft may be located outside the threaded groove 16, an inner wall surface of the threaded groove 16 is provided with a thread adapted to the second threaded shaft 14, a part of the movable rod 5 may be located inside the accommodating cavity 15, and another part of the movable rod may be located outside the accommodating cavity 15.

In this embodiment, above-mentioned dead lever 3 is provided with two, and two dead levers 3 are located the top of two bases 2 respectively, set up bracing piece 4 between two dead levers 3, have the improvement of certain range to teaching aid's overall stability.

In this embodiment, the writing board 9 is provided on the frame 7, the writing board 9 may be provided in a frame body of the frame 7, a fixing block 19 is connected to one side of a top portion of the frame 7, an installation base 11 is provided on the other side of the top portion of the frame 7, a driving motor 10 is installed on an upper side surface of the installation base 11, a power output end of the driving motor 10 is connected to a first screw shaft 8, one end of the cleaning board 6 is connected to the first screw shaft 8, the other end of the cleaning board 6 is extended toward a bottom of the writing board 9 and may be extended to the bottom of the frame 7, the writing board 9 and the brush bristles 20 are adapted to a height of the writing board 9, the specific height is set according to the height of the writing board 9, the brush bristles 20 are provided on a side surface of the cleaning board 6 facing the writing board 9, and the brush bristles 20 are abutted against a side surface of the writing board 9.

The driving motor 10 is externally connected with a power supply, the driving motor 10 is electrically connected with the power supply through a lead, one end of the first threaded shaft 8 is rotatably connected with the output end of the driving motor 10, the other end of the first threaded shaft 8 is connected with the fixed block 19 through a bearing, one end of the cleaning plate 6 is provided with a threaded hole, the first threaded shaft 8 penetrates through the threaded hole to be in threaded connection with the cleaning plate 6, the brush bristles 20 are matched with the writing plate 9, the driving motor 10 drives the first threaded shaft 8 to rotate, in the rotating process of the first threaded shaft 8, the cleaning plate 6 performs reciprocating motion along the axial direction of the first threaded shaft 8 to drive the brush bristles 20 on the cleaning plate 6 to perform reciprocating motion relative to the writing plate 9, so that the writing contents on the writing plate 9 are cleaned, the cleaning plate 6, the fixed block 19 and the brush bristles 20 are matched for use, and the writing plate 9 can be cleaned, the trouble of manual wiping by teachers is avoided, time and labor are saved, the labor intensity of the teachers is reduced, and the practicability is high.

The utility model discloses a theory of operation:

in the using process, the base 2 is moved to a proper position through the universal wheel 1, then the universal wheel 1 is locked, the disc 18 is rotated, the disc 18 drives the transverse shaft 12 to rotate, the transverse shaft 12 drives the second gear 17 to rotate, the second gear 17 drives the first gear 13 to rotate, the first gear 13 drives the second threaded shaft 14 to rotate, under the action of the threads, the second threaded shaft 14 drives the movable rod 5 to move in the vertical direction, further, the height of the frame 7 and the writing board 9 can be adjusted, the flexibility is strong, teachers can use the teaching machine more conveniently when developing teaching work, the requirements of different visual field ranges can be met, the application range is expanded, when the content written on the writing board 9 needs to be cleaned, the driving motor 10 is started, the driving motor 10 drives the first threaded shaft 8 to rotate, under the driving action of the driving motor 10, the first threaded shaft 8 drives the cleaning board 6 to move transversely in the horizontal direction, cleaning plate 6 drives brush hair 20 and cleans clipboard 9, can avoid the teacher from carrying out the loaded down with trivial details of manual cleaning from this, labour saving and time saving alleviates teacher's intensity of labour, and the practicality is strong, sets up universal wheel 1, conveniently removes convenient to use at the teaching in-process clipboard 9.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A teaching aid, comprising:

a base (2);

the lifting mechanism is arranged on the base (2) and comprises a fixed rod (3), a supporting rod (4) and a movable rod (5), a containing cavity (15) is formed in the fixed rod (3), one end of the containing cavity (15) is provided with an opening, a second threaded shaft (14) is arranged inside the containing cavity (15), the movable rod (5) is sleeved on the second threaded shaft (14) and is in threaded connection with the second threaded shaft (14), one end, far away from the opening, of the second threaded shaft (14) is provided with a first gear (13) and a second gear (17) which are in meshed connection, the first gear (13) is sleeved on the second threaded shaft (14), the second gear (17) is in meshed connection with the first gear (13) through a transverse shaft (12), one end of the transverse shaft (12) extends out of the fixed rod (3), and connecting the discs (18);

the frame (7) is connected with the movable rod (5), the writing board (9) is connected onto the frame (7), a fixed block (19) is connected to one side of the top of the frame (7), an installation seat (11) is arranged on the other side of the top of the frame (7), a driving motor (10) is installed on the upper side face of the installation seat (11), and the power output end of the driving motor (10) is connected with a first threaded shaft (8);

cleaning plate (6), cleaning plate's (6) one end with first threaded shaft (8) are connected, cleaning plate's (6) other end orientation the bottom of clipboard (9) sets up, cleaning plate (6) orientation be equipped with brush hair (20) on the side of clipboard (9), brush hair (20) with a side butt setting of clipboard (9).

2. A teaching aid as claimed in claim 1 wherein: and a plurality of universal wheels (1) are fixedly arranged at the bottom of the base (2).

3. A teaching aid as claimed in claim 1 or 2 wherein: the other end of first threaded shaft (8) with fixed block (19) pass through the bearing and connect, first threaded shaft (8) run through clearance board (6), clearance board (6) with threaded connection between first threaded shaft (8), brush hair (20) with the high looks adaptation of clipboard (9).

4. A teaching aid as claimed in claim 2, wherein: the second gear (17) is located inside the accommodating cavity (15), one end of the transverse shaft (12) is connected with the inner wall of the accommodating cavity (15) through a bearing, the other end of the transverse shaft (12) penetrates through the fixing rod (3) and can rotate relative to the fixing rod (3), the transverse shaft (12) penetrates through the second gear (17), and the second gear (17) is connected with the transverse shaft (12) in an interference fit manner;

the second threaded shaft (14) is connected with the inner wall of the accommodating cavity (15) through a bearing, the second threaded shaft (14) penetrates through the first gear (13), and the first gear (13) is connected with the second threaded shaft (14) in an interference fit mode.

5. An educational appliance according to claim 4, wherein: a threaded groove (16) which is open is formed in the movable rod (5), the second threaded shaft (14) enters the threaded groove (16) along the opening, one part of the second threaded shaft (14) is located inside the threaded groove (16), the other part of the second threaded shaft is located outside the threaded groove (16), and the threaded groove (16) is connected with the second threaded shaft (14) in a matched mode;

one part of the movable rod (5) is positioned inside the accommodating cavity (15), and the other part of the movable rod is positioned outside the accommodating cavity (15).

6. An educational appliance as claimed in claim 5, wherein: the base (2) is provided with two, the fixed rods (3) are provided with two, the two fixed rods (3) are respectively positioned at the tops of the two bases (2), and the supporting rod (4) is positioned between the two fixed rods (3).

7. An educational appliance as claimed in claim 6, wherein: the universal wheel (1) is provided with four, four universal wheel (1) is located two respectively the bottom of base (2), and four universal wheel (1) all is provided with the brake block.

8. An educational appliance as claimed in claim 6, wherein: the driving motor (10) is externally connected with a power supply, and the driving motor (10) is electrically connected with the power supply through a lead.