CN219353425U - Adjustable teaching aid - Google Patents

Abstract

The utility model discloses an adjustable teaching aid which comprises a box body and a supporting component. The box body is provided with an opening at one side, two first teaching boards which are mutually attached are symmetrically arranged at the opening, a second teaching board is also in sliding fit with the inner side of the box body, the three teaching boards are mutually linked through the structure in the box body, when the box body needs to be unfolded and used, the first teaching boards are controlled to move outwards, the second teaching boards can be synchronously driven to extend out of the opening to realize the unfolding of a teaching aid, and the three teaching boards are positioned on the same plane for synchronous teaching; when needing to accomodate, the first teaching board of control inwards moves, drives the second teaching board in step and withdraws to the box inboard, and operation process is simple and convenient, and the teaching personnel of being convenient for use.

Description

An adjustable teaching aid

technical field

The utility model relates to the field of teaching aids, in particular to an adjustable teaching aid.

Background technique

In the process of teaching and training, educational institutions are increasingly using movable and height-adjustable teaching boards for the convenience of teaching, so that teaching can be carried out in different places and under different visual conditions. Usually movable teaching aids cannot be provided with too large teaching boards in order to ensure the safety during their movement and use, but the smaller teaching boards contain less content, so the existing teaching aids usually accommodate multiple teaching boards. When in use, a plurality of teaching boards are expanded to enlarge the overall area.

The storage and unfolding process of the multiple teaching boards set in the existing adjustable teaching aids is relatively cumbersome, and usually has a relatively complicated installation process, and the multiple teaching boards are not easy to be on the same plane after being unfolded, which is inconvenient for writing and viewing.

Utility model content

In order to solve the above technical problems, the utility model proposes an adjustable teaching aid, the process of storing and unfolding is convenient and fast, and the unfolded teaching board can be on the same plane.

In order to achieve the above purpose, the utility model provides an adjustable teaching aid, comprising: a box body and a support assembly; the support assembly is fixedly connected to the bottom surface of the box body; There is a slot; a group of first connecting rod, second connecting rod, third connecting rod and toothed plate are symmetrically hinged in the box; the two toothed plates are engaged; the slot, the first connecting rod and the The second connecting rod is located at the same height; the first connecting rod is located between the slot and the second connecting rod on the same side; the first connecting rod and the second connecting rod on the same side face The middle part of the box body is inclined with the same inclination angle; the second connecting rod, the third connecting rod and the toothed disc are arranged coaxially; the other end of the first connecting rod and the second connecting rod are hinged to a first A teaching board; the two first teaching boards are symmetrically arranged in the opening and one side is attached; two supporting roads are fixedly connected to both sides of the inside of the box; the two supporting roads are slidably fitted with a second teaching board. board; one end of a group of fourth connecting rods is symmetrically hinged on both sides of the bottom surface of the second teaching board, and the other end of the fourth connecting rod is respectively hinged with the other end of the third connecting rod on the same side; the fourth connecting rod Both the rod and the third link are inclined towards the middle of the box.

The edge of one side of the second teaching board facing the opening is inclined inwardly.

The shape of the toothed disk is a quarter-circle sector toothed disk.

One of the toothed discs is hollow in the middle; a limiting post is fixedly connected to the box; the limiting post is located in the hollow area of the toothed disc and is used to limit the rotation angle of the toothed disc.

The support assembly includes a support plate; one end of a plurality of telescopic electric cylinders is fixedly connected to the upper side of the support plate, and a moving assembly is fixedly connected to the bottom; the other ends of the plurality of telescopic electric cylinders are fixedly connected to the bottom surface of the box.

The moving assembly is several universal wheels.

A baffle plate is fixedly connected to one side of the opening of the box body.

A magnetic block is fixedly connected to the sides of the two first teaching boards that are attached to each other; the opposite poles of the two magnetic blocks are in contact.

The utility model discloses the following technical effects:

The utility model is provided with three interlinked teaching boards, and all the teaching boards can be stored and unfolded by controlling the movement of one teaching board, which is convenient for teaching personnel to operate; and the unfolded teaching boards are located on the same plane, which is convenient for teaching and watching.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is the front view when the utility model is deployed;

Fig. 2 is the front view when the utility model is stored;

Fig. 3 is a side view of the utility model;

Figure 4 is a bottom view of the internal structure of the box in the storage state;

Figure 5 is a bottom view of the internal structure of the box in the unfolded state;

Among them, 1. box body; 11. slotting; 12. support road; 13. a baffle; 14. limit column; 2. the first teaching board; 21. the first connecting rod; 22. the second connecting rod; 23, gear plate; 24, third connecting rod; 25, magnetic block; 3, second teaching board; 31, fourth connecting rod; 4, support plate; 41, telescopic electric cylinder; 5, universal wheel.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In order to make the above purpose, features and advantages of the utility model more obvious and understandable, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Figures 1-5, the utility model provides an adjustable teaching aid, comprising: a box body 1 and a support assembly; the support assembly is fixedly connected to the bottom surface of the box body 1; Slot 11; a group of first connecting rod 21, second connecting rod 22, third connecting rod 24 and toothed disc 23 are symmetrically hinged in the box body 1; two toothed discs 23 mesh; slot 11, first connecting rod 21 and the second The two connecting rods 22 are located at the same height, and the slot 11 is used to provide space for movement when the first connecting rod 21 and the second connecting rod 22 extend out of the box body 1; the first connecting rod 21 is located at the same side of the slot 11 and In the middle of the second connecting rod 22; the first connecting rod 21 and the second connecting rod 22 on the same side are inclined towards the middle of the box body 1 and have the same inclination angle; the second connecting rod 22, the third connecting rod 24 and the toothed disc 23 are arranged coaxially; The other end of the first connecting rod 21 and the second connecting rod 22 are hinged with a first teaching board 2; the two first teaching boards 2 are symmetrically arranged in the opening and one side is attached; the first connecting rod 21 and the second connecting rod 22 are connected with The two points on the bottom of the first teaching board 2 are fixedly connected to provide angle control for it and prevent the angle change during the movement of the first teaching board 2 . Both sides of the inside of the box body 1 are also fixedly connected with two support tracks 12, and the support tracks 12 are arranged directly above the slot 11; the two support tracks 12 are slidably fitted with a second teaching board 3 for providing the second teaching board 3 Support and limit; the two sides of the second teaching board 3 are in clearance with the inner wall of the box body 1, one end of a group of fourth connecting rods 31 is symmetrically hinged on both sides of the bottom surface of the second teaching board 3, and the other ends of the fourth connecting rods 31 are respectively the same The other end of the third connecting rod 24 on the side is hinged; both the fourth connecting rod 31 and the third connecting rod 24 are inclined towards the middle of the box body 1 .

Specifically, as shown in Figures 4 and 5, the degree of inclination of the third connecting rod 24 to the center of the box body 1 is greater than the degree of inclination of the first connecting rod 21 and the second connecting rod 22, so that the whole of the first teaching board 2 expands outwards. During the process, after the first connecting rod 21 and the second connecting rod 22 change from inwardly inclined to outwardly inclined, the third connecting rod 24 and the fourth connecting rod 31 are in a relatively straight state, ensuring that the second connecting rod at this time The teaching board 3 slides to the front side and is located on the same plane as the first teaching board 2; the third connecting rod 24, the gear plate 23, the fourth connecting rod 31, the first connecting rod 21, and the second connecting rod 22 are all at different heights position to prevent them from touching each other.

In an embodiment of the present application, the edge of the second teaching board 3 facing the opening is inclined inwards to prevent it from being stuck with the first teaching board 2 during movement, and to facilitate the movement of the first teaching board 2 .

In one embodiment of the present application, the shape of the toothed disc 23 is a quarter-circle sector-shaped toothed disc 23, which does not overlap with other connecting rods, thereby reducing the risk of device failure.

In one embodiment of the present application, one of the toothed discs 23 is hollow in the middle; a limit post 14 is fixedly connected to the box body 1; the limit post 14 is located in the hollow area of the toothed disc 23 for limiting the Rotation angle, when the second teaching board 3 is in the same position as the first teaching board 2 , the limiting column 14 just abuts against the side wall of the gear plate 23 .

In one embodiment of the present application, the support assembly includes a support plate 4; one end of a plurality of telescopic electric cylinders 41 is affixed to the upper side of the support plate 4, and a mobile assembly is affixed to the bottom; The bottom surface is fixed.

In one embodiment of the present application, the moving components are several universal wheels 5 .

In one embodiment of the present application, a baffle 13 is fixedly attached to one side of the opening of the box body 1 to reduce the exposure of the internal structure of the device, and at the same time, an eraser and an oil-based pen can be placed.

In one embodiment of the present application, a magnetic block 25 is fixedly attached to the sides where the two first teaching boards 2 are attached to each other; the opposite poles of the two magnetic blocks 25 are in contact with each other, and the magnetism of the two magnetic blocks 25 is relatively weak, and there is no external force. When the two first teaching boards 2 are attracted to each other, it is convenient to receive, and when there is an external force (such as manual twitching), the two first teaching boards 2 will be separated.

Working principle: When the utility model needs to be used for teaching, the device in the storage state is pushed to move to the target position, and the telescopic electric cylinder 41 is controlled to adjust to a suitable height. At this time, one of the first teaching boards 2 is twitched outward to make it move outwards. At this time, the first connecting rod 21 and the second connecting rod 22 rotate outwards, and the second connecting rod 22 synchronously drives the third connecting rod coaxial with it. 24 and the toothed disc 23 rotate, and the toothed disc 23 drives the toothed disc 23 on the other side to rotate, so that the first connecting rod 21 and the second connecting rod 22 on the other side rotate outward synchronously, that is, one of the first connecting rods is pulled outward One teaching board 2 can synchronously drive the other first teaching board 2 to move outward. Simultaneously, two third connecting rods 24 rotate outwards, drive two fourth connecting rods 31 to rotate outwards, make the included angle between the third connecting rods 24 and the fourth connecting rods 31 expand gradually, push the second teaching board 3 step by step Move outwards, the final included angle tends to 180 °, at this time the second teaching board 3 is pushed out to the same plane as the first teaching board 2, at this time, one of the toothed discs 23 abuts against the limit post 14, and the device stuck, the first teaching board 2 can no longer move outwards, and the deployment of the teaching aids is completed.

When the teaching aids are no longer used after teaching, one of the first teaching boards 2 is pushed inwardly. The teaching board 3 moves into the box body 1, and the storage is completed when the two magnetic blocks 25 in the two first teaching boards 2 are bonded together.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model, rather than Any indication or implication that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should not be construed as limiting the invention.

The above-mentioned embodiment is only to describe the preferred mode of the present utility model, not to limit the scope of the present utility model. The various deformations and improvements mentioned above should all fall within the scope of protection determined by the claims of the present utility model.

Claims (8)

1. An adjustable teaching aid, characterized in that it comprises: a box body (1) and a support assembly; the support assembly is affixed to the bottom surface of the box body (1); one side of the box body (1) There is a slot (11) on each of the other two sides; a group of first connecting rod (21), second connecting rod (22), third connecting rod (24) and teeth are hinged symmetrically in the box (1). disc (23); the two toothed discs (23) mesh; the slot (11), the first connecting rod (21) and the second connecting rod (22) are located at the same height; the first The connecting rod (21) is located between the slot (11) and the second connecting rod (22) on the same side; the first connecting rod (21) and the second connecting rod (22) on the same side Incline towards the middle of the box (1) with the same inclination angle; the second connecting rod (22), the third connecting rod (24) and the toothed disc (23) are arranged coaxially; the first connecting rod The other end of the rod (21) and the second connecting rod (22) is hinged with a first teaching board (2); the two first teaching boards (2) are symmetrically arranged in the opening and one side is attached; Both sides of the inside of the box (1) are also fixedly connected with two support roads (12); the two support roads (12) are slidingly fitted with a second teaching board (3); the bottom surface of the second teaching board (3) One end of a group of fourth connecting rods (31) is symmetrically hinged on both sides, and the other ends of the fourth connecting rods (31) are respectively hinged with the other ends of the third connecting rods (24) on the same side; Both the rod (31) and the third connecting rod (24) are inclined towards the middle of the box (1). 2. The adjustable teaching aid according to claim 1, characterized in that, the edge of the second teaching board (3) facing the opening is inclined inwardly. 3. An adjustable teaching aid according to claim 1, characterized in that, the shape of the toothed disk (23) is a quarter-circle fan-shaped toothed disk. 4. An adjustable teaching aid according to claim 3, characterized in that, one of the toothed discs (23) is hollow in the middle; a limiting column (14) is fixedly connected to the box (1) ); the limit post (14) is located in the hollow area of the toothed disc (23), and is used to limit the rotation angle of the toothed disc (23). 5. A kind of adjustable teaching aid according to claim 1, characterized in that, the support assembly comprises a support plate (4); the upper side of the support plate (4) is fixedly connected with some telescopic electric cylinders (41 ), the bottom is fixedly connected with a moving assembly; the other ends of several telescopic electric cylinders (41) are fixedly connected with the bottom surface of the box body (1). 6. An adjustable teaching aid according to claim 5, characterized in that the moving assembly is a plurality of universal wheels (5). 7. An adjustable teaching aid according to claim 1, characterized in that a baffle (13) is fixedly connected to one side of the opening of the box body (1). 8. A kind of adjustable teaching aid according to claim 1, characterized in that, a magnetic block (25) is respectively affixed to the sides where the two first teaching boards (2) fit together; The different poles of the magnetic block (25) are in contact with each other.