Multifunctional teaching ruler for primary school teaching

Abstract

The utility model discloses a multifunctional teaching ruler for primary school teaching, and belongs to the technical field of teaching appliances, the teaching ruler comprises a mounting disc body, an adsorption disc, a through groove, sliding plates, a knob cap, a synchronous telescopic assembly and a limiting assembly, and the sliding plate on one side is pulled to drive a meshing gear to rotate through a meshing tooth groove in the sliding plate on one side. When the sliding plates contract, the sliding plates on the two sides can be adjusted to stretch out and draw back at the same time, the moving positions of the sliding plates can be limited through the limiting vertical plates, then the radius of a drawn circle can be adjusted, and drawing of the circle can be completed by rotating by 180 degrees. And a threaded rod rotates and moves inwards to make contact with the outer wall of one end of a meshing gear by rotating a turncap in a limiting assembly arranged in a rotating mode, then the meshing gear cannot rotate through friction force, and the positions of sliding plates on the two sides can be fixed.

Description

Technical Field

[0001] This utility model belongs to the field of teaching aids technology, specifically, it relates to a multifunctional teaching ruler for primary school teaching. Background Technology

[0002] A teaching ruler is needed at every stage of mathematics teaching. Generally, the purpose of a teaching ruler is to draw on the teaching board. With the help of graphics, students can understand some algorithms. In particular, when elementary school students are learning mathematics, the most common problems they encounter are calculating the perimeter and area of ​​shapes.

[0003] Chinese utility model patent CN212046617U discloses a multifunctional teaching ruler for primary school students, including a shell, a suction cup, a scale plate, a first connecting rod, a second connecting rod, and a chalk holder. The suction cup is movably engaged with the bottom of the shell, and the scale plate is fixed to the top of the shell as a single unit. The shell has two parts. The first connecting rod is movably engaged with the middle of the shell, and the second connecting rod cooperates with the first connecting rod. The chalk holder is fixed to the side of the second connecting rod. The shell contains a main gear plate, a secondary gear plate, a bearing, a connecting rod, and a slot. The main gear plate and the secondary gear plate cooperate and move to drive the first and second connecting rods to rotate and draw circles. The suction cup adheres to the blackboard for support, reducing damage to the blackboard. The length between the first and second connecting rods is adjustable, and the radius of the circle can be adjusted as needed. The scale plate and the outer surfaces of the first and second connecting rods are all equipped with scales for direct measurement of angles and straight line lengths, reducing the number of teaching rulers to carry and making it convenient to use.

[0004] The existing technology also has the following problem: it requires a 360° rotation to draw a complete circle, which makes the drawing speed relatively slow. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To address the problem mentioned in the background art that a 360° rotation is required to draw a complete circle, which results in a slow drawing speed, the present invention adopts the following technical solution.

[0007] A multifunctional teaching ruler for primary school students includes a mounting plate, an adsorption plate rotatably connected to the bottom of the mounting plate, a through groove on the outer wall of the mounting plate, sliding plates slidably connected to the two sides inside the mounting plate, a knob cap fixedly connected to the upper end of the mounting plate, a synchronous telescopic component installed inside the through groove, the synchronous telescopic component allows the two sliding plates to extend or shorten simultaneously, and a limit component installed on the outer wall of the mounting plate to fix the two sliding plates.

[0008] Preferably, mounting components are installed on opposite ends of the two sliding plates, which can fix the chalk and make the chalk fit against the blackboard.

[0009] Preferably, the synchronous telescopic assembly includes meshing tooth grooves and meshing gears. The two sliding plates are arranged one above the other, and the bottom of the opposite ends of the two sliding plates is fixedly connected to a limiting vertical plate. The outer walls of the opposite surfaces of the two sliding plates are provided with multiple meshing tooth grooves. A meshing gear is rotatably connected at the center of the groove. The meshing gear meshes with the meshing tooth grooves on the two sliding plates. Pulling one side of the sliding plate causes the meshing tooth groove on one side of the sliding plate to drive the meshing gear to rotate, driving the other side of the sliding plate to extend outward.

[0010] Preferably, the limiting component includes a threaded rod and a cap. The threaded rod is threadedly connected to the outer wall of the mounting plate. The cap is fixedly connected to one end of the threaded rod near the outside. The threaded end of the threaded rod is inserted into the interior of the through groove and contacts the outer wall of one end of the meshing gear.

[0011] Preferably, the mounting assembly includes a mounting lug, a return spring, a sliding rod, a pressure cap, and a insertion groove. The opposite ends of the two sliding plates are provided with insertion holes, and the two sliding plates are provided with sliding holes on both sides of the insertion holes. The sliding rod is inserted into the sliding hole. The top of the two sliding rods is fixedly connected to the pressure cap, and the bottom of the pressure cap is provided with an insertion groove. The bottom of the sliding rod is fixedly connected to the mounting lug, and a return spring is provided between the mounting lug and the bottom of the sliding plate.

[0012] Preferably, a limiting cylinder is fixedly connected between the lugs on both sides, and scale markings are provided on the upper ends of the sliding plates on both sides.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. Through the set synchronous telescopic component, by pulling out one side of the sliding plate, the meshing gear on the sliding plate can be driven to rotate, thereby driving the other side of the sliding plate to extend outward. The same applies when the sliding plate retracts, thus allowing the simultaneous extension and retraction of both sliding plates. The limiting vertical plate can limit the movement position of the sliding plate, thereby adjusting the radius of the drawn circle. A 180° rotation can complete the drawing of a circle, thus making the drawing speed of circles faster.

[0015] 2. By rotating the cap in the limiting assembly, the threaded rod rotates and moves inward to contact the outer wall of one end of the meshing gear. This prevents the meshing gear from rotating due to friction, thus fixing the position of the sliding plates on both sides and preventing the sliding plates from moving during drawing, which would prevent the circle from being drawn.

[0016] 3. By pulling the pressure cap outward through the installed components, the sliding rod slides and compresses the return spring. The chalk is then inserted into the insertion hole and secured to the end of the chalk via the insertion slot. The return spring's rebound force presses the chalk downward, allowing it to adhere tightly to the blackboard. This results in clearer circles and ensures the chalk remains in contact with the blackboard even as it wears down. It also allows for the installation of chalk of varying lengths.

[0017] 4. The limiting tube can fit the outer wall of the chalk, increasing the contact area for support, making the chalk less likely to break when drawing circles.

[0018] 5. The scale markings can display the extension length of the slider, which makes it easier to draw the radius of the required circle and makes drawing more convenient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a multifunctional teaching ruler for primary school teaching in this utility model;

[0020] Figure 2 This is a schematic diagram of the synchronous telescopic component structure in this utility model;

[0021] Figure 3 This is a schematic diagram of the limiting component structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the installation component structure in this utility model.

[0023] The correspondence between the labels and component names in the attached figures is as follows:

[0024] 100. Mounting plate; 101. Attachment plate; 102. Knob cap;

[0025] 200. Sliding plate; 201. Meshing tooth groove; 202. Meshing gear; 203. Insertion hole; 204. Limiting vertical plate; 205. Scale mark; 206. Threaded rod; 207. Screw cap; 209. Sliding hole;

[0026] 300. Limiting sleeve; 301. Mounting lug; 302. Return spring; 303. Sliding rod; 304. Press cap; 305. Insertion slot. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0030] like Figure 1 The diagram shows a preferred embodiment of a multifunctional teaching ruler for primary school students. This embodiment includes a mounting plate 100, with an adsorption plate 101 rotatably connected to the bottom of the mounting plate 100. A through groove is provided on the outer wall of the mounting plate 100. Sliding plates 200 are slidably connected to both sides of the inner side of the mounting plate 100. A knob cap 102 is fixedly connected to the upper end of the mounting plate 100 on both sides. Chalk is inserted into the ends of the sliding plates 200 on both sides. In this embodiment, the chalk is adsorbed onto the blackboard by the adsorption plate 101. By extending the sliding plates 200 outwards, chalk is mounted on the opposite ends of the sliding plates 200. By holding the knob cap 102 and rotating it, a 180° rotation is possible to draw a circle, thus increasing the speed of drawing circles. The knob cap 102 allows the mounting plate 100 to rotate.

[0031] like Figure 2As shown, this is a schematic diagram of the synchronous telescopic component structure in this embodiment. Two sliding plates 200 are arranged one above the other, and a limiting vertical plate 204 is fixedly connected to the bottom of the opposite ends of the two sliding plates 200. Multiple meshing grooves 201 are provided on the outer walls of the opposite sides of the two sliding plates 200. A meshing gear 202 is rotatably connected to the center of the groove. The meshing gear 202 meshes with the meshing grooves 201 on the two sliding plates 200. Insertion holes 203 are provided at opposite ends of the two sliding plates 200. Chalk is inserted into the insertion holes 203. In this embodiment, by pulling one sliding plate 200, the meshing grooves 201 on one sliding plate 200 can drive the meshing gear 202 to rotate, thereby driving the other sliding plate 200 to extend outwards. The same applies when the sliding plate 200 retracts, thus allowing simultaneous adjustment of the telescopic movement of both sliding plates 200. The limiting vertical plate 204 can limit the movement position of the sliding plates 200.

[0032] It is worth noting that the aforementioned meshing groove 201 and meshing gear 202 are synchronous telescopic components in this embodiment. Synchronous telescopic components include, but are not limited to, meshing groove 201 and meshing gear 202. Any component that can cause the sliding plates 200 on both sides to extend and retract simultaneously can be applied to this embodiment.

[0033] like Figure 3 As shown, this is a schematic diagram of the limiting component structure in this embodiment. A threaded rod 206 is threadedly connected to the outer wall of the mounting plate 100. A nut 207 is fixedly connected to one end of the threaded rod 206 near the outside. The threaded end of the threaded rod 206 is inserted into the through groove and contacts the outer wall of one end of the meshing gear 202. In this embodiment, by rotating the nut 207, the threaded rod 206 rotates and moves inward to contact the outer wall of one end of the meshing gear 202. This prevents the meshing gear 202 from rotating due to friction, thereby fixing the position of the sliding plates 200 on both sides and preventing the sliding plates 200 from moving during drawing, which would prevent the circle from being drawn.

[0034] It is worth noting that the threaded rod 206 and the cap 207 mentioned above are limiting components in this embodiment. Limiting components include, but are not limited to, the threaded rod 206 and the cap 207. Any component that can limit the movement position of the sliding plate 200 can be applied to this embodiment.

[0035] like Figure 4As shown, this is a schematic diagram of the installation component structure in this embodiment. The sliding plates 200 on both sides of the insertion hole 203 have sliding holes 209. Sliding rods 303 are inserted into the sliding holes 209. A pressing cap 304 is fixedly connected to the top of the sliding rods 303 on both sides. An insertion groove 305 is provided at the bottom of the pressing cap 304. A mounting lug 301 is fixedly connected to the bottom of the sliding rod 303. A return spring 302 is provided between the mounting lug 301 and the bottom of the sliding plate 200. In this embodiment, pulling the pressing cap 304 outward causes the sliding rod 303 to slide and compress the return spring 302. The chalk is then inserted into the insertion hole 203 and secured to the end of the chalk by the insertion groove 305. The return force of the return spring 302 presses the chalk downward, allowing it to adhere tightly to the blackboard, resulting in clearer circles. Furthermore, the chalk remains in contact with the blackboard even when it wears down, and chalk of varying lengths can be installed.

[0036] It is worth noting that the mounting lug 301, return spring 302, sliding rod 303, pressure cap 304, and insertion slot 305 mentioned above are the mounting components in this embodiment. The mounting components include, but are not limited to, the mounting lug 301, return spring 302, sliding rod 303, pressure cap 304, and insertion slot 305. Any component that can make the chalk adhere to the blackboard can be used in this embodiment.

[0037] like Figure 4 As shown, a limiting sleeve 300 is fixedly connected between the lugs 301 on both sides. In this embodiment, the limiting sleeve 300 can fit against the outer wall of the chalk, increasing the contact area of ​​the support, so that the chalk is not easy to break when drawing circles.

[0038] like Figure 3 As shown, scale marks 205 are provided on the upper ends of both sliding plates 200. In this embodiment, the extension length of the sliding plate 200 can be displayed by the scale marks 205, so that the radius of the required circle can be drawn better, making the drawing more convenient.

[0039] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A multifunctional teaching ruler for primary school teaching, comprising a mounting plate (100), an adsorption plate (101) rotatably connected to the bottom of the mounting plate (100), a through groove provided on the outer wall of the mounting plate (100), sliding plates (200) slidably connected to the inner two sides of the mounting plate (100), and a knob cap (102) fixedly connected to the upper end of the mounting plate (100), characterized in that, The inside of the through slot is equipped with a synchronous telescopic component, which allows the sliding plates (200) on both sides to extend or shorten simultaneously. The outer wall of the mounting plate (100) is equipped with a limiting component, which fixes the sliding plates (200) on both sides. The synchronous telescopic assembly includes meshing tooth grooves (201) and meshing gears (202). Two sliding plates (200) are arranged one above the other, and a limiting vertical plate (204) is fixedly connected to the bottom of the opposite ends of the two sliding plates (200). Multiple meshing tooth grooves (201) are provided on the outer walls of the opposite sides of the two sliding plates (200). A meshing gear (202) is rotatably connected at the center of the groove. The meshing gear (202) meshes with the meshing tooth grooves (201) on the two sliding plates (200). Pulling one side of the sliding plate (200) causes the meshing tooth groove (201) on one side of the sliding plate (200) to drive the meshing gear (202) to rotate, driving the other side of the sliding plate (200) to extend outward. The limiting assembly includes a threaded rod (206) and a cap (207). The outer wall of the mounting plate (100) is threaded with the threaded rod (206). The end of the threaded rod (206) near the outside is fixedly connected to the cap (207). The threaded end of the threaded rod (206) is inserted into the interior of the through groove and contacts the outer wall of one end of the meshing gear (202).

2. The multifunctional teaching ruler for primary school teaching according to claim 1, characterized in that, Mounting components are installed on opposite ends of the two sliding plates (200), which can fix the chalk and make the chalk fit against the blackboard.

3. The multifunctional teaching ruler for primary school teaching according to claim 1, characterized in that, The mounting components include mounting lugs (301), return springs (302), sliding rods (303), pressure caps (304), and insertion slots (305). Insertion holes (203) are provided at opposite ends of the two sliding plates (200). Sliding holes (209) are provided on both sides of the insertion holes (203) of the two sliding plates (200). Sliding rods (303) are inserted into the sliding holes (209). Pressure caps (304) are fixedly connected to the top of the two sliding rods (303). Insertion slots (305) are provided at the bottom of the pressure caps (304). Mounting lugs (301) are fixedly connected to the bottom of the sliding rods (303). A return spring (302) is provided between the mounting lugs (301) and the bottom of the sliding plates (200).

4. The multifunctional teaching ruler for primary school teaching according to claim 3, characterized in that, A limiting cylinder (300) is fixedly connected between the lugs (301) on both sides, and scale marks (205) are provided on the upper end of the sliding plates (200) on both sides.

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