Teaching aids

Abstract

This utility model discloses a teaching aid, including a writing board, a detachable eraser mechanism, and a collection mechanism. The sliding groove is located on the upper and lower front sides of the writing board. A guide rod is fixedly connected between the two sides inside the sliding groove. Sliding blocks are slidably connected inside the sliding groove. The detachable eraser mechanism is disposed between the sliding blocks. A collection mechanism is located at the lower end of the writing board. The advantages of this utility model compared to existing technologies are: With the detachable eraser mechanism, when a large amount of chalk dust adheres to the sponge after multiple erasings of the writing board, pulling the handle forward and rotating the two knobs 90° respectively will engage the two ends of the knobs with the front of the locking block, thus detaching the sponge from the writing board and keeping it stationary. The teacher can then tear the sponge to separate the male and female hook and loop fasteners, allowing for quick removal and easy replacement and cleaning, ensuring effective erasing of the writing board.

Description

Technical Field

[0001] This utility model relates to the field of teaching supplies technology, specifically to teaching aids. Background Technology

[0002] Teaching aids are tools used by teachers to assist teaching and help students better understand knowledge. They can be divided into two categories: traditional and modern. Traditional teaching aids include blackboards, which are paired with chalk of different colors. Teachers can write and draw directly to explain knowledge, making it convenient to present content at any time and interact with students.

[0003] The teaching aid disclosed in CN221660467U includes a rectangular erasing plate at the front of the writing board. When a staff member starts a forward and reverse motor, the motor drives a threaded rod to rotate clockwise and counterclockwise, thereby enabling the rectangular erasing plate to move left and right to erase chalk writing on the writing board. This not only reduces the workload of teachers and staff but also solves the problem of some teachers and staff who are too small to erase chalk writing at high places. It is highly practical, but the existing technology still has some shortcomings:

[0004] 1. Existing anti-abrasion pads will absorb too much chalk dust after wiping the writing board multiple times. Existing technology does not make it convenient to quickly replace the anti-abrasion pads or clean them, which greatly affects the chalk erasing effect.

[0005] 2. During the erasing process, the chalk dust is not completely absorbed by the anti-abrasion cotton pad. Some of the dust falls downwards onto the U-shaped placement plate. Current technology makes it difficult to clean the chalk dust inside the U-shaped placement plate, and excessive accumulation can easily cause harm to the teacher's health.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The technical problem to be solved by this utility model is to address the above-mentioned issues and provide teaching aids.

[0008] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a teaching aid, including a writing board, characterized in that it further includes:

[0009] A slide groove is provided on the upper and lower front sides of the writing board. A guide rod is fixedly connected between the two sides inside the slide groove. Slider blocks are slidably connected inside the slide groove, and the guide rod passes through the sliders.

[0010] A detachable eraser mechanism, disposed between sliders, includes a connecting plate, a fixing plate, a sponge block, a male hook and loop fastener, a female hook and loop fastener, a pull rod, a knob, a locking block, and a spring. The rear end of the connecting plate is fixedly connected to the front end of the slider. The fixing plate is positioned between the front of the writing board and the connecting plate. The sponge block is positioned between the front of the writing board and the fixing plate. The male hook and loop fastener is fixedly connected to the rear of the fixing plate, and the female hook and loop fastener is fixedly connected to the front of the sponge block. The male and female hook and loop fasteners are adhesively bonded to each other. The pull rod is rotatably connected to the upper and lower ends of the front of the fixing plate. The front end of the pull rod passes through the connecting plate and is fixedly connected to a knob. The locking block is located on both sides of the knob and is fixedly connected to the connecting plate. The spring is sleeved on the outside of the pull rod and locked between the connecting plate and the fixing plate.

[0011] As an improvement, the card block is set in an arc shape and is arranged symmetrically from left to right, and the length of the knob is the same as the distance between the two ends of the card block.

[0012] As an improvement, a handle is fixedly connected to the middle of the front side of the fixing plate.

[0013] As an improvement, the lower end of the writing board is provided with a collection mechanism, including:

[0014] A collection box is disposed at the lower front side of the writing board, and the collection box is located at the lower part of the slide groove at the lower end;

[0015] An insert block, which is fixedly connected to the middle of the rear side of the collection box;

[0016] The slot is located at the lower front side of the writing board, corresponding to the insertion block, and the insertion block is adapted to the slot.

[0017] As an improvement, a movable box is fixedly connected to the lower front side of the writing board. A limit plate is slidably connected inside the movable box. Pull rods are fixedly connected to both sides of the lower part of the limit plate. The lower end of the pull rods passes through the movable box and is fixedly connected to a handle. A spring is sleeved on the outside of the pull rods. The spring is engaged between the limit plate and the lower inside of the movable box.

[0018] As an improvement, a locking block is fixedly connected to the upper part of the limiting plate, the locking block extends into the slot, and a locking groove is opened inside the insertion block, the locking block and the locking groove are adapted to each other.

[0019] The advantages of this utility model compared with the prior art are as follows: 1. This utility model can control the left and right movement of the fixed plate by pulling the handle in conjunction with the slide, slider and guide rod, so that the sponge block can erase the writing on the writing board. When a lot of chalk dust is attached to the sponge block after erasing the writing board multiple times, by pulling the handle forward, the fixed plate squeezes the spring to make the sponge block leave the writing board. At the same time, the pull rod pushes the knob away from the connecting plate until it moves to the front of the locking block. Then, rotate the two knobs 90° respectively, so that the two ends of the knobs are locked in the front of the locking block, so that the sponge block leaves the writing board and stays still. At this time, the teacher tears the sponge block to separate the male hook and loop fastener from the female hook and loop fastener, so that the sponge block can be quickly removed for easy replacement and cleaning, ensuring the erasing effect of the writing on the writing board.

[0020] 2. This utility model features a collection mechanism with a collection box at the lower front side of the writing board. This allows excess chalk dust to fall into the collection box and be collected during the wiping process. When a significant amount of chalk dust accumulates in the collection box, pulling down the second handle, in conjunction with the second pull rod and the limiting plate, disengages the locking block from the locking groove, releasing the locking of the insert block. Then, pulling the collection box outwards pulls the insert block out of the slot, thus removing the dust inside the collection box. This reduces harm to teachers and greatly improves practicality. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the teaching aid for this utility model.

[0022] Figure 2 This is a schematic diagram of the detachable eraser mechanism of the teaching aid of this utility model.

[0023] Figure 3 This is a schematic diagram of the collection mechanism of the teaching aids of this utility model.

[0024] Figure 4 This is a side sectional view of the collection box and insert board of the teaching aids of this utility model.

[0025] Figure 5 yes Figure 3 Enlarged view of A in the middle.

[0026] Figure 6 yes Figure 3 Enlarged view of B in the middle.

[0027] As shown in the figure: 1. Writing board; 2. Slide groove; 3. Guide rod; 4. Slider; 5. Detachable eraser mechanism; 501. Connecting plate; 502. Fixing plate; 503. Sponge block; 504. Female hook and loop fastener; 505. Female hook and loop fastener; 506. Pull rod one; 507. Knob; 508. Locking block; 509. Spring one; 6. Handle one; 7. Collection mechanism; 701. Collection box; 702. Insert block; 703. Slot; 704. Movable box; 705. Limiting plate; 706. Pull rod two; 707. Handle two; 708. Spring two; 709. Locking block; 710. Locking groove. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] Combined with appendix Figure 1-6 The present invention includes a writing board 1, with a sliding groove 2 on the upper and lower sides of the front part of the writing board 1. A guide rod 3 is welded between the two sides inside the sliding groove 2. A slider 4 is slidably connected inside the sliding groove 2, and the guide rod 3 passes through the slider 4. The slider 4 can slide left and right along the sliding groove 2.

[0030] A detachable eraser mechanism 5 is provided between the sliders 4, including a connecting plate 501, a fixing plate 502, a sponge block 503, a male hook and loop fastener 504, a female hook and loop fastener 505, a pull rod 506, a knob 507, a locking block 508, and a spring 509. The front end of the slider 4 and the rear end of the connecting plate 501 are fixed together by welding. A fixing plate 502 is provided between the front side of the writing board 1 and the connecting plate 501, and the fixing plate 502 is located between the sliders 4. A handle 6 is fixedly connected to the middle of the front side. A male hook and loop fastener 504 is glued to the back of the fixing plate 502. A female hook and loop fastener 505 is glued to the front of the sponge block 503. The male hook and loop fastener 504 and the female hook and loop fastener 505 are glued to each other, so that the sponge block 503 is fixed to the back of the fixing plate 502 and the sponge block 503 is in contact with the front of the writing board 1. Pulling the handle 6 controls the fixing plate 502 to move left and right, so that the sponge block 503 can erase the chalk writing on the front of the writing board 1.

[0031] A pull rod 506 is rotatably connected to the upper and lower ends of the front side of the fixed plate 502 via bearings. The front end of the pull rod 506 passes through the connecting plate 501 and is fixedly connected to a knob 507. The knob 507 is in a vertical position. Locking blocks 508 are provided on both sides of the knob 507, and the locking blocks 508 are fixedly connected to the connecting plate 501. A spring 509 is sleeved on the outside of the pull rod 506, and the spring 509 is locked between the connecting plate 501 and the fixed plate 502. The spring 509 pushes the fixed plate 502, causing the sponge block 503 to fit tightly against the writing board 1, improving the erasing effect. The locking blocks 508 are arc-shaped and symmetrically arranged. The length of the knob 507 is the same as the distance between the ends of the locking blocks 508 that are furthest apart. When the writing board is erased multiple times, and a lot of chalk dust adheres to the sponge block 503, the knob 507 can be used to erase the writing board. Pull handle 6 forward. Fixing plate 502 compresses spring 509, causing sponge block 503 to separate from writing board 1. At the same time, pull rod 506 pushes knob 507 away from connecting plate 501 until it moves to the front of locking block 508. Then, rotate both knobs 507 90° respectively, so that the two ends of knob 507 are locked in front of locking block 508, thus keeping sponge block 503 away from writing board 1. At this time, the teacher tears sponge block 503 to separate the female hook and loop fastener 504 from the female hook and loop fastener 505, so that sponge block 503 can be quickly removed for replacement and cleaning. The clean sponge block 503 is then glued back to the female hook and loop fastener 504 through female hook and loop fastener 505. Then, rotate knob 507 to the vertical position so that sponge block 503 is in contact with writing board 1 again for reuse.

[0032] A collection mechanism 7 is provided at the lower end of the writing board 1, including a collection box 701, a plug 702, a slot 703, a movable box 704, a limiting plate 705, a second pull rod 706, a second handle 707, a second spring 708, a locking block 709, and a locking groove 710. The collection box 701 is provided at the lower front side of the writing board 1 and is located at the lower part of the lower slide groove 2. It is used to collect excess chalk dust that falls when wiping the writing board 1. The plug 702 is welded to the middle of the rear side of the collection box 701. A slot 703 is provided at the lower front side of the writing board 1 corresponding to the plug 702, and the plug 702 and the slot 703 are compatible.

[0033] A movable box 704 is fixedly connected to the lower front side of the writing board 1. A limit plate 705 is slidably connected inside the movable box 704. Pull rods 706 are fixedly connected to both sides of the lower part of the limit plate 705. The lower end of the pull rods 706 passes through the movable box 704 and is fixedly connected to a handle 707. A spring 708 is sleeved on the outside of the pull rods 706. The spring 708 is engaged between the limit plate 705 and the lower inside of the movable box 704. A locking block 709 is fixedly connected to the upper part of the limit plate 705. The locking block 709 extends into the slot 703. A locking groove 710 is opened inside the insert 702. Locking block 709 is adapted to locking groove 710. Spring 2 708 pushes limiting plate 705 to make locking block 709 stably inserted into locking groove 710, locking insert 702 and keeping collection box 701 stable. When a lot of chalk dust accumulates inside collection box 701, by pulling handle 2 707 downward, in conjunction with pull rod 2 706 and limiting plate 705, locking block 709 is disengaged from locking groove 710, releasing the locking of insert 702. Then, by pulling collection box 701 outward, insert 702 is pulled out of slot 703 to remove the dust inside collection box 701.

[0034] In practical implementation, as shown in the figure, after the teacher has written on the writing board 1, pulling handle 6, in conjunction with the slide groove 2, slider 4, and guide rod 3, controls the left and right movement of the fixed plate 502, allowing the sponge block 503 to erase the writing on the writing board 1. When the sponge block 503 needs to be replaced, first pull handle 6 forward, then rotate the two knobs 507 by 90° respectively, so that the two ends of the knobs 507 are engaged with the front side of the locking block 508, and then tear off the sponge block 503. Using the sponge block 503, the male hook and loop fastener 504 and the female hook and loop fastener 505 are separated, allowing the sponge block 503 to be quickly removed. After cleaning, it is reattached to the back of the fixing plate 502. The knob 507 is then turned to the vertical position to make the sponge block 503 re-contact the writing board 1. When a lot of chalk dust accumulates inside the collection box 701, the handle 707 is pulled down to release the lock on the insert block 702. Then, the collection box 701 is pulled out to remove the dust inside.

[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A teaching aid, comprising a writing board (1), characterized in that, Also includes: Slide (2), the slide (2) is opened on the upper and lower sides of the front part of the writing board (1), the guide rod (3) is fixedly connected between the two sides inside the slide (2), and the slider (4) is slidably connected inside the slide (2), and the guide rod (3) passes through the slider (4); A detachable eraser mechanism (5) is provided between the sliders (4) and includes a connecting plate (501), a fixing plate (502), a sponge block (503), a male hook and loop fastener (504), a female hook and loop fastener (505), a pull rod (506), a knob (507), a locking block (508), and a spring (509). The rear side of the connecting plate (501) is fixedly connected to the front end of the slider (4) at one end away from each other. The fixing plate (502) is provided between the front side of the writing board (1) and the connecting plate (501). The sponge block (503) is provided between the front side of the writing board (1) and the fixing plate (502). The male hook and loop fastener (504) is provided between the front side of the writing board (1) and the fixing plate (502). 504) is fixedly connected to the rear side of the fixing plate (502), the female hook and loop fastener (505) is fixedly connected to the front side of the sponge block (503), the male hook and loop fastener (504) is bonded to the female hook and loop fastener (505), the first pull rod (506) is rotatably connected to the upper and lower ends of the front side of the fixing plate (502), the front end of the first pull rod (506) passes through the connecting plate (501) and is fixedly connected to the knob (507), the locking block (508) is set on both sides of the knob (507) and is fixedly connected to the connecting plate (501), and the first spring (509) is sleeved on the outside of the first pull rod (506) and locked between the connecting plate (501) and the fixing plate (502).

2. The teaching aid of claim 1 wherein: The card block (508) is set in an arc shape and is symmetrically arranged on the left and right. The length of the knob (507) is the same as the distance between the ends of the card blocks (508) that are far away from each other.

3. The teaching aid of claim 1 wherein: A handle (6) is fixedly connected to the middle of the front side of the fixing plate (502).

4. The teaching aid of claim 1 wherein: The writing board (1) is provided with a collection mechanism (7) at its lower end, including: Collection box (701), the collection box (701) is disposed at the lower front end of the writing board (1), the collection box (701) is located at the lower part of the slide groove (2); Insert (702), the insert (702) is fixedly connected to the middle of the rear side of the collection box (701); The slot (703) is located at the lower front side of the writing board (1) corresponding to the insert (702), and the insert (702) is adapted to the slot (703).

5. The teaching aid of claim 4 wherein: The writing board (1) is fixedly connected to the lower front side of the movable box (704). The movable box (704) is slidably connected to the limit plate (705). The lower two sides of the limit plate (705) are fixedly connected to the pull rods (706). The lower end of the pull rods (706) passes through the movable box (704) and is fixedly connected to the handle (707). The pull rods (706) are sleeved with springs (708). The springs (708) are engaged between the limit plate (705) and the lower side of the movable box (704).

6. The teaching aid of claim 5 wherein: A locking block (709) is fixedly connected to the upper part of the limiting plate (705). The locking block (709) extends into the slot (703). A locking groove (710) is opened inside the insert (702). The locking block (709) is adapted to the locking groove (710).

Images