CN211335321U - An adjustable teaching aid - Google Patents

Abstract

The utility model belongs to the technical field of teaching, in particular to an adjustable teaching auxiliary device, which comprises a mounting plate, wherein the upside of a support rod is rotationally connected with a rotating ear, a plurality of telescopic rods are fixedly connected with a pressing plate facing one side of a white board, the other sides of two hinges positioned at the same side are fixedly connected with wing plates, the rear side of the white board is provided with two magnetic locking grooves respectively matched with the positions of the two magnetic stripes, the lower sides of the two wing plates are respectively provided with a locking hole matched with a sliding hole at the same side, an arc-shaped support rod is assembled inside the through groove, and a bolt matched with a limiting hole is arranged between the support rod and the white board, so that the device has simple structure, can adjust the angle of the white board as required, is convenient for teachers to write, prevents students from watching the content on the white board due to, can withdraw the pterygoid lamina, reduce occupation space, and conveniently hang the chart and demonstrate at the blank upside.

Description

An adjustable teaching aid

technical field

The utility model belongs to the technical field of teaching, in particular to an adjustable teaching auxiliary device.

Background technique

A whiteboard is a writing surface made of a generally white sheet metal material. Similar to a blackboard, a whiteboard is a rewritable writing tool. It is usually used for teaching, meeting discussions, or personal and family notes. The whiteboard must be written with a special whiteboard pen. Because the whiteboard pen contains chemical raw materials, it will smell like a smell. Compared with the traditional blackboard, the whiteboard has the advantage of being movable and not immune to Due to the constraints of the position, in the process of daily school teaching, teachers will also use whiteboards as auxiliary devices in order to improve the quality of teaching. However, most of today’s whiteboards are installed vertically, which is inconvenient to adjust the angle. When the teacher writes to the underside of the whiteboard, You need to squat down to write, which is time-consuming and labor-intensive, and the angle cannot be changed. It is easy for students to be unable to see the writing content on the whiteboard due to the problem of reflection, which affects the quality of teaching. The area of the whiteboard used today is small. When the teacher writes too much, the area is small. The whiteboard is not enough for the teacher to write, but when the large-area whiteboard is not in use, it takes up too much space and is inconvenient to store.

Utility model content

The purpose of this utility model is: to provide an adjustable teaching aid device, which can adjust the angle of the whiteboard according to the needs, which is convenient for teachers to write, prevents students from viewing the contents of the whiteboard due to luminescence, and writes on a large area on the teacher. When it is not in use, the two wings can be unfolded to increase the writing area of the whiteboard. When not in use, the wings can be retracted to reduce the space occupied, and it is also convenient for teachers to hang teaching charts on the whiteboard.

In order to realize the above-mentioned technical purpose, the technical scheme that the utility model adopts is as follows:

An adjustable teaching aid device includes a mounting plate, a support rod is fixedly connected to the upper side of the mounting plate, a rotating ear is rotatably connected to the upper side of the support rod, a whiteboard is fixedly connected to the rotating ear, and the whiteboard is connected to the whiteboard. An L-shaped bracket is fixedly connected to the side, and one end of the L-shaped bracket facing the whiteboard is fixedly connected with a plurality of telescopic rods. Several of the telescopic rods are sleeved with springs, and a plurality of the telescopic rods are fixedly connected to the side facing the whiteboard. A pull handle is fixedly connected to the upper side of the platen, and the pull handle runs through the L-shaped bracket on the side away from the platen. The rear side of the whiteboard is symmetrically provided with two hinges, and the two hinges on the same side are fixedly connected with wings. The lower sides of the two wings are provided with handles, the rear sides of the two wings are provided with magnetic strips, and the rear sides of the whiteboard are provided with two magnetic locks that match the positions of the two magnetic strips respectively. The lower side of the whiteboard is provided with sliding holes symmetrically on the left and right sides, the front surfaces of the two sliding holes are provided with sliding grooves, and the two sliding holes are provided with a second sliding hole connected to the sliding groove on one side of the two sliding holes close to the same side of the wing plate. A limit slot, the two sliding holes are provided with a second limit slot connected to the sliding slot on one side away from the same side of the wing plate, the sliding hole is equipped with a locking rod, and the locking rod is fixedly connected with a The first limit slot is a limit block that matches the second limit slot, the lower sides of the two wings are provided with lock holes that match the sliding holes on the same side, and the support rod is provided with a through slot, so An arc-shaped support rod is assembled inside the through slot, and one side of the arc-shaped support rod is fixedly connected to the whiteboard. A bolt with matching holes, the bolt is threadedly connected with the limit hole, the bolt is fixedly connected with a bolt head matched with the support rod, and the bolt head is equipped with a non-slip rubber pad matched with the support rod.

By adopting the technical scheme of the utility model, when the angle of the whiteboard needs to be adjusted, hold the whiteboard by hand, and then rotate the bolt head to take out the bolt from the limit hole. The rod can move freely in the slot, thereby driving the underside of the whiteboard to move. The whiteboard is connected to the support rod through the rotating ear, and the arc-shaped support rod moves left and right in the slot to adjust the angle of the whiteboard. After adjusting to an appropriate angle, screw the bolt into the first lock hole on the side of the support rod close to the whiteboard. The bolt head presses the support rod, and the anti-slip rubber pad increases the friction between the bolt head and the support rod. The arc-shaped support rod is placed in the limit, so as to limit the whiteboard, so that the whiteboard cannot rotate freely; when the teacher is writing, the angle between the whiteboard and the support rod can be adjusted to make the underside of the whiteboard rotate upward, and the whiteboard can be adjusted To the most suitable writing angle, there is no need for the teacher to squat on the ground to write on the whiteboard. When there is reflection during the teaching process, the angle of the whiteboard can be fine-tuned to adjust the whiteboard to the best viewing angle. When the writing area of the whiteboard is not enough, You can pull the two handles respectively, and turn the wings on both sides through the hinge, so that the magnetic strip is moved out of the magnetic lock slot, so that the wings are parallel to the whiteboard. The position block moves out from the second limit slot and enters the chute. At this time, push the limit block to drive the lock rod to extend out of the slide hole and enter the lock hole. When the limit block moves to match the first limit slot , turn the limit block into the first limit slot, so as to limit the lock rod, the lock rod is locked into the lock hole, to support the wing plate, when the wing plate is not needed, hold the wing plate by hand , move the limit block out of the first limit slot into the chute, then move the limit block to drive the lock rod to move out of the lock hole, when the limit block is moved to match the position of the second limit slot At this time, rotate the limit block into the second limit slot to limit the lock rod. At this time, rotate the wing plate backward to lock the magnetic strip into the magnetic lock slot, so as to limit the wing plate and lock the wing plate. The board is put into the back of the whiteboard. With this structure, when the writing area of the whiteboard is not enough, the flap can be expanded to increase the writing area. When the flap is not needed, the flap can be retracted to the back of the whiteboard to reduce the volume and space. ; When a wall chart is required, lift the handle to drive the pressure plate to move upward, the spring contracts and the telescopic rod to contract. At this time, the upper side of the chart can be placed between the pressure plate and the whiteboard, and the pull handle is released to extend through the spring to drive the pressure plate to move toward the whiteboard. , press and fix the chart; the device has a simple structure, and the angle of the whiteboard can be adjusted according to needs, which is convenient for teachers to write, and prevents students from viewing the content on the whiteboard due to reflection. The board is unfolded to increase the writing area of the whiteboard. When not in use, the wing board can be retracted to reduce the occupied space, and it is convenient to hang the chart on the side of the whiteboard for display.

Further limited, four universal wheels are fixedly connected to the lower side of the mounting plate. Such a structure is convenient for the user to move the device.

Further limited, each of the four universal wheels is provided with a braking mechanism. Such a structure prevents the device from sliding sideways during use.

Further limited, the lower side of the whiteboard can be detachably and fixedly connected to the whiteboard pencil case. Such a structure is convenient for the user to store the whiteboard pen.

Further limited, the upper side of the mounting plate is provided with four stabilizing blocks matched with the support rods. Such a structure improves the stability of the support rod.

Compared with the prior art, the utility model has the following advantages:

1. The device has a simple structure, and the angle of the whiteboard can be adjusted as needed. When the teacher is writing, the angle of the whiteboard can be increased, so that the underside of the whiteboard is upward for the teacher to write, and it also prevents the students from being unable to see the whiteboard due to the problem of reflection. The content of writing affects the quality of teaching.

2. When the teacher writes on a large area of the device, the wing plate can be expanded to increase the writing area of the whiteboard, and when the wing plate is not in use, the wing plate can be retracted to reduce the occupied space of the device and facilitate storage.

3. The device can cooperate with the pull handle through the pressure plate, the telescopic rod, the spring, and it is convenient for the teacher to hang the teaching drawing on the whiteboard for explanation.

4. Four universal wheels are fixedly connected to the lower side of the installation plate of the device, and this structure is convenient for the user to move the device.

Description of drawings

The present invention may be further illustrated by the non-limiting examples given in the accompanying drawings;

1 is a schematic structural diagram one of an embodiment of an adjustable teaching aid device of the present invention;

Fig. 2 is the enlarged structure schematic diagram of A place in Fig. 1;

3 is a second structural schematic diagram of an embodiment of an adjustable teaching aid device of the present invention;

4 is a schematic cross-sectional structure diagram of an embodiment of an adjustable teaching aid device of the present invention;

Fig. 5 is the enlarged structure schematic diagram of B place in Fig. 4;

Fig. 6 is the enlarged structure schematic diagram of C place in Fig. 4;

7 is a schematic structural diagram of a bolt, a bolt head and an anti-skid rubber pad according to an embodiment of an adjustable teaching aid device of the present invention;

The main component symbols are explained as follows:

Mounting plate 1, universal wheel 10, stabilizing block 101, support rod 11, rotating ear 12, whiteboard 13, whiteboard pencil case 131, L-shaped bracket 14, telescopic rod 15, spring 16, pressure plate 17, pull handle 18, hinge 2. Wing plate 21, handle 211, magnetic strip 22, magnetic lock slot 23, slide hole 24, slide slot 25, first limit slot 26, second limit slot 261, lock lever 27, limit block 28, lock Hole 29 , through groove 3 , arc-shaped support rod 31 , limit hole 32 , bolt 33 , bolt head 331 , anti-skid rubber pad 332 .

Detailed ways

In order to enable those skilled in the art to better understand the present invention, the technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments.

As shown in Figures 1-7, an adjustable teaching auxiliary device of the present invention includes a mounting plate 1, a support rod 11 is fixedly connected to the upper side of the mounting plate 1, and a rotating ear 12 is rotatably connected to the upper side of the support rod 11, The rotating ear 12 is fixedly connected with the whiteboard 13 , the upper side of the whiteboard 13 is fixedly connected with an L-shaped bracket 14 , and one end of the L-shaped bracket 14 facing the whiteboard 13 is fixedly connected with a plurality of telescopic rods 15 . A pressure plate 17 is fixedly connected to the side of the rod 15 facing the whiteboard 13 , and a pull handle 18 is fixedly connected to the upper side of the pressure plate 17 . 2. The two hinges 2 on the same side are fixedly connected with a wing plate 21. The lower side of the two wing plates 21 is provided with a handle 211. There are two magnetic lock slots 23 that match the positions of the two magnetic strips 22 respectively. The lower side of the whiteboard 13 is provided with sliding holes 24 symmetrically from left to right. The front surfaces of the two sliding holes 24 are provided with sliding grooves 25. A first limit slot 26 connected to the chute 25 is provided on the side close to the same-side wing plate 21 , and a second limit slot connected to the chute 25 is provided on the side of the two sliding holes 24 away from the same-side wing plate 21 . Slot 261, a lock rod 27 is assembled inside the sliding hole 24, the lock rod 27 is fixedly connected with a limit block 28 that matches the first limit slot 26 and the second limit slot 261, and the lower sides of the two wings 21 are provided with There is a lock hole 29 that matches the sliding hole 24 on the same side. The support rod 11 is provided with a through slot 3. The through slot 3 is equipped with an arc-shaped support rod 31. One side of the arc-shaped support rod 31 is fixedly connected to the whiteboard 13. The support rod 31 is provided with a number of limit holes 32, and between the support rod 11 and the whiteboard 13 is provided with a bolt 33 that matches the limit hole 32, the bolt 33 is threadedly connected with the limit hole 32, and the bolt 33 is fixedly connected with the support rod. 11 matching bolt head 331, the bolt head 331 is equipped with a non-slip rubber pad 332 matching with the support rod 11.

With the technical solution of the present invention, when the angle of the whiteboard 13 needs to be adjusted, hold the whiteboard 13 by hand, and then rotate the bolt head 331 to take out the bolt 33 from the limit hole 32, at this time, cancel the adjustment of the arc-shaped support rod 31 Limiting, the arc-shaped support rod 31 can freely move in the through slot 3, thereby driving the lower side of the whiteboard 13 to move, the whiteboard 13 is rotatably connected to the support rod 11 through the rotating ear 13, and the arc-shaped support rod 31 moves left and right in the through slot 3 , so as to adjust the angle of the whiteboard 13. When the angle of the whiteboard 13 is adjusted to an appropriate angle as required, the bolt 33 is rotated and screwed into the first locking hole 29 on the side of the support rod 11 close to the whiteboard 13, and the bolt head 331 is pressed tightly. The support rod 11 and the anti-skid rubber pad 332 increase the friction force between the bolt head 331 and the support rod 11, thereby limiting the arc-shaped support rod 31, thereby limiting the whiteboard 13, so that the whiteboard 13 cannot rotate freely; When the teacher is writing, the angle between the large whiteboard 13 and the support rod 11 can be adjusted, so that the underside of the whiteboard 13 can be rotated upwards, and the whiteboard 13 can be adjusted to the most suitable writing angle, without the teacher squatting on the ground to write on the whiteboard 13 , when there is reflection in the teaching process, the angle of the whiteboard 13 can be fine-tuned to adjust the whiteboard 13 to the best viewing angle. When the writing area of the whiteboard 13 is not enough, the two handles 211 can be pulled respectively and rotated through the hinge 2 The wings 21 on both sides move the magnetic strip 22 out of the magnetic lock slot 23 so that the wings 21 are parallel to the whiteboard 13. At this time, the limit block 28 is rotated to drive the lock rod 27 to rotate in the sliding hole 24, and the limit block 28 is moved from The second limit slot 261 moves out and enters the chute 25. At this time, the limit block 28 is pushed to drive the locking rod 27 to extend out of the sliding hole 24 and enter the lock hole 29. When the limit block 28 moves to the same position as the first limit When the grooves 26 are matched, the limit block 28 is turned into the first limit groove 26 to limit the lock rod 27, and the lock rod 27 is locked into the lock hole 29 to support the wing plate 21. When using the wing plate 21, hold the wing plate 21 by hand, move the limit block 28 out of the first limit slot 26, enter the chute 25, and then move the limit block 28 to drive the lock rod 27 from the lock hole 29 When the limit block 28 is moved to match the position of the second limit groove 261, the rotation limit block 28 enters the second limit groove 261, thereby limiting the lock lever 27, and at this time, it moves backward. Rotate the wing plate 21 to lock the magnetic strip 22 into the magnetic lock slot 23, so as to limit the wing plate 21 and put the wing plate 21 into the back side of the whiteboard 13. Such a structure can be expanded when the writing area of the whiteboard 13 is not enough. The wing plate 21 increases the writing area. When the wing plate 21 is not needed, the wing plate 21 can be retracted to the back side of the whiteboard 13 to reduce the volume and the occupied space; when a wall chart is required, the handle 18 can be lifted and pulled to drive the pressure plate 17 upward When moving, the spring 16 contracts and the telescopic rod 15 contracts. At this time, the upper side of the chart can be placed between the pressing plate 17 and the whiteboard 13. Release the pull handle 18 and stretch it through the spring 16, which drives the pressing plate 17 to move toward the whiteboard 13 and presses the chart tightly. fixed; the device has a simple structure, The angle of the whiteboard 13 can be adjusted according to the needs, which is convenient for the teacher to write, and prevents students from viewing the content on the whiteboard 13 due to reflections. When the teacher writes on a large area, the two wings 21 can be unfolded to increase the writing area of the whiteboard 13. , when not in use, the wing plate 21 can be retracted to reduce the occupied space, and it is convenient to hang the chart on the upper side of the whiteboard 13 for display.

Preferably, four universal wheels 10 are fixedly connected to the lower side of the mounting plate 1 . Such a structure is convenient for the user to move the device. In fact, other structures can also be considered according to specific conditions, so as to facilitate the user to move the device.

Preferably, each of the four universal wheels 10 is provided with a braking mechanism. Such a structure prevents the device from sliding sideways during use. In fact, other structures can also be considered according to specific conditions to prevent the device from sliding sideways during use.

Preferably, the lower side of the whiteboard 13 is detachably and fixedly connected to the whiteboard pen case 131 . Such a structure is convenient for the user to store the whiteboard pen. In fact, other structures can also be considered according to specific conditions, so as to facilitate the user to store the whiteboard pens.

Preferably, the upper side of the mounting plate 1 is provided with four stabilizing blocks 101 matching with the support rods 11 . Such a structure improves the stability of the support rod 11. In fact, other structures can also be considered according to specific conditions to improve the stability of the support rod 11 .

The above-mentioned embodiments merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims (5)

1. An adjustable teaching auxiliary device, comprising a mounting plate (1), characterized in that: a support rod (11) is fixedly connected to the upper side of the mounting plate (1), and the upper side of the support rod (11) rotates A rotating ear (12) is connected, the rotating ear (12) is fixedly connected with a whiteboard (13), an L-shaped bracket (14) is fixedly connected to the upper side of the whiteboard (13), and the L-shaped bracket (14) faces One end of the whiteboard (13) is fixedly connected with a plurality of telescopic rods (15), a plurality of the telescopic rods (15) are sleeved with a spring (16), and a plurality of the telescopic rods (15) are fixedly connected to the side facing the whiteboard (13) with a A pressing plate (17), the upper side of the pressing plate (17) is fixedly connected with a pulling handle (18), and the pulling handle (18) extends through the L-shaped bracket (14) on the side away from the pressing plate (17), and the whiteboard (13) The rear side is provided with two hinges (2) symmetrically from left to right, the two hinges (2) on the same side are fixedly connected with a wing plate (21), and the lower sides of the two wing plates (21) are provided with The handle (211), the rear sides of the two wings (21) are provided with magnetic strips (22), and the rear side of the whiteboard (13) is provided with two magnetic strips (22) respectively matching the positions of the two magnetic strips (22). Magnetic lock grooves (23), sliding holes (24) are symmetrically provided on the lower side of the whiteboard (13) from left to right, and sliding grooves (25) are provided on the front surfaces of the two sliding holes (24). The side of the hole (24) close to the same-side wing plate (21) is provided with a first limit groove (26) connected with the sliding groove (25), and the two sliding holes (24) are far away from the same-side wing plate (21) One side is provided with a second limit groove (261) connected with the sliding groove (25), the sliding hole (24) is internally equipped with a locking rod (27), and the locking rod (27) is fixedly connected with a locking rod (27). A limit block (28) matching the first limit groove (26) and the second limit groove (261), and the lower sides of the two wings (21) are provided with sliding holes (24) on the same side A matching lock hole (29), the support rod (11) is provided with a through slot (3), an arc-shaped support rod (31) is assembled inside the through-slot (3), and the arc-shaped support rod (31) One side is fixedly connected to the whiteboard (13), the arc-shaped support rod (31) is provided with a number of limit holes (32), and the support rod (11) and the whiteboard (13) are provided with limit holes ( 32) Matching bolts (33), the bolts (33) are threadedly connected to the limiting holes (32), and the bolts (33) are fixedly connected with bolt heads (331) that match the support rods (11), The bolt head (331) is equipped with a non-slip rubber pad (332) matched with the support rod (11). 2 . The adjustable teaching aid device according to claim 1 , wherein four universal wheels ( 10 ) are fixedly connected to the lower side of the mounting plate ( 1 ). 3 . 3. An adjustable teaching aid device according to claim 2, characterized in that: the four universal wheels (10) are all provided with a braking mechanism. 4. An adjustable teaching aid device according to claim 1, characterized in that: the lower side of the whiteboard (13) is detachably and fixedly connected to the whiteboard pen box (131). 5. An adjustable teaching aid device according to claim 1, characterized in that: the upper side of the mounting plate (1) is provided with four stabilizing blocks (101) matching the support rods (11).

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