Multifunctional auxiliary ruler for mathematics education

Abstract

The utility model discloses a kind of multifunctional auxiliary ruler of mathematical education, including L-shaped fixed ruler arm, central angle auxiliary, movable ruler arm and at least two locking knobs.The horizontal ruler arm of fixed ruler arm and vertical ruler arm are vertically connected, and linear drawing edge is equipped outside;Central angle auxiliary contains fixed disc and rotating disc, annular scale dial is integrated in the circumferential side of fixed disc, fixed disc is fixed in the connecting place of fixed ruler arm, rotating disc is fixedly connected with movable ruler arm one end and coaxial synchronous rotation;One locking knob is connected with fixed disc screw thread by being arranged rotating disc, another locking knob is arranged in movable ruler arm.Movable ruler arm is rotatably connected with central angle auxiliary, fixed position is fixed by locking knob, various angles can be drawn by the aid of central angle auxiliary, and it is convenient for mathematical drawing.

Description

Technical Field

[0001] This utility model provides an auxiliary ruler, and in particular relates to a multifunctional auxiliary ruler for mathematics education. Background Technology

[0002] In mathematics education, tools used to assist in drawing and angle measurement (such as rulers, protractors, and right-angle rulers) are fundamental teaching aids. Their core function is to help users quickly draw straight lines, measure or draw specific angles (such as right angles, acute angles, and obtuse angles), and provide a benchmark for drawing geometric figures. They are indispensable auxiliary tools in primary and secondary school mathematics classrooms and after-school exercises. These devices achieve measurement functions through fixed scale markings (such as the length scale of a ruler and the angle scale of a protractor), and achieve straight line drawing through straight edges, supporting the concrete teaching of geometric knowledge.

[0003] The basic structure of existing auxiliary rulers used in mathematics education is relatively simple: rulers are mostly long strips, only capable of drawing straight lines and measuring length; protractors are usually semi-circular or circular, relying on a central hole to locate the vertex, requiring the use of a ruler to draw angles, but lacking a fixed structure, they are prone to angle deviation due to hand shaking during measurement; although right-angle rulers have an L-shaped structure (including horizontal and vertical arms), allowing for quick drawing of right angles, the angles of their two arms are fixed and cannot be adjusted, failing to meet the needs of drawing non-right-angle angles; some combination tools attempt to integrate rulers and protractors, but their angle adjustment relies on manual rotation and lacks a locking device, resulting in poor angle stability. Furthermore, the lack of a unified central angle reference component makes it difficult to achieve accurate angle marking and multi-position fixation, leading to frequent tool switching or manual calibration during the drawing process, cumbersome operation, and insufficient accuracy, failing to meet the comprehensive needs of "adjustable angles, stable fixation, and multi-reference drawing." Utility Model Content

[0004] To address the aforementioned issues, this application provides a multifunctional auxiliary ruler for mathematics education, which solves the problems of limited angle adjustment, poor stability, and limited functional scenarios, and achieves multifunctional assistance for accurate angle drawing, stable fixation, and multi-mode drawing.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a multifunctional auxiliary ruler for mathematics education, comprising:

[0006] L-shaped fixed ruler arm: It has a horizontally extending ruler arm and a vertically extending ruler arm, which are connected vertically.

[0007] Center angle aid: installed at the junction of the horizontal and vertical ruler arms of the fixed ruler arm, the center angle aid is provided with a circular scale;

[0008] Long, plate-shaped movable ruler arm: one end is coaxially rotatably connected to the center angle auxiliary device;

[0009] At least two locking knobs are threadedly connected to the movable ruler arm and the center angle auxiliary device, used to selectively lock the relative rotational position of the movable ruler arm and the center angle auxiliary device, as well as the circumferential positioning of the annular dial, to fix the drawing angle.

[0010] Preferably, the center angle aid includes a fixed disk and a rotating disk; the annular scale is integrated on the periphery of the fixed disk; the rotating disk is fixedly connected to the movable ruler arm and rotates coaxially with the fixed disk; a locking knob passes through the rotating disk and is threadedly connected to the fixed disk, for locking the relative rotation of the rotating disk and the fixed disk.

[0011] Preferably, the movable ruler arm has a straight drawing edge at the end away from the center angle aid; the movable ruler arm is also provided with another locking knob, which is used to help fix the posture of the movable ruler arm.

[0012] Preferably, both the outer sides of the horizontal and vertical ruler arms of the fixed ruler arm are provided with straight drawing edges.

[0013] Preferably, the fixing plate is fixed to the junction of the horizontal and vertical ruler arms of the fixing ruler arm by bolt connection or integral molding.

[0014] Preferably, the rotating disk is fixedly connected to one end of the movable ruler arm by rivets or bolts, ensuring that the movable ruler arm and the rotating disk rotate coaxially and synchronously.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages compared with the prior art:

[0016] This multifunctional auxiliary ruler for mathematics education establishes a right-angle drawing reference through the horizontal and vertical ruler arms of the L-shaped fixed ruler arm. The long, plate-shaped movable ruler arm rotates coaxially around the center angle auxiliary device of the integrated annular scale. By utilizing the rotational cooperation of the fixed and rotating disks, combined with at least two locking knobs, the relative rotational position of the movable ruler arm and the center angle auxiliary device, as well as the circumferential positioning of the annular scale, are respectively locked. At the same time, the straight line drawing edges of the movable ruler arm and the fixed ruler arm support straight line drawing. This solves the problems of existing drawing tools such as "single angle adjustment, poor fixed stability, and limited functional scenarios". Through the synergy of "annular scale marking angle → movable ruler arm rotation for angle adjustment → knob division for locking position → compatibility with right angle / arbitrary angle dual reference", it achieves multifunctional assistance in mathematical drawing, including accurate angle drawing, fixed reference posture, and compatibility with multiple modes such as straight line / right angle / arbitrary angle.

[0017] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a multifunctional auxiliary ruler for mathematics education according to the present invention;

[0019] Figure 2 This is an exploded view of a multifunctional auxiliary ruler for mathematics education according to this utility model;

[0020] Figure 3 This is an exploded view of the movable ruler arm end of a multifunctional auxiliary ruler for mathematics education according to this utility model;

[0021] Figure 4 This is a three-dimensional schematic diagram of the fixed ruler arm end of a multifunctional auxiliary ruler for mathematics education according to this utility model.

[0022] As shown in the figure:

[0023] 1. Fixed ruler arm; 2. Center angle auxiliary device; 3. Movable ruler arm; 4. Locking knob;

[0024] 11. Horizontal ruler arm; 12. Vertical ruler arm;

[0025] 21. Fixed disk; 22. Rotating disk; 23. Circular graduated disk;

[0026] 31. Draw the edges with straight lines. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] like Figure 1 and Figure 2 As shown, a multifunctional auxiliary ruler for mathematics education includes an L-shaped fixed ruler arm 1 (its horizontal ruler arm 11 and vertical ruler arm 12 are vertically connected, and both have straight drawing edges on their outer sides), a long strip-shaped movable ruler arm (3) (with a straight drawing edge 31 at the end away from the center angle auxiliary device 2), and a center angle auxiliary device 2 (installed at the connection of the fixed ruler arm 1 and equipped with a ring scale 23); one end of the movable ruler arm 3 is coaxially rotatably connected to the center angle auxiliary device 2, and at least two locking knobs 4 are threadedly connected to the movable ruler arm 3 and the center angle auxiliary device 2 to selectively lock the relative rotational position of the movable ruler arm 3 and the center angle auxiliary device 2, and the circumferential positioning of the ring scale 23, so as to fix the drawing angle.

[0031] In this embodiment, the horizontal ruler arm 11 and the vertical ruler arm 12 of the L-shaped fixed ruler arm 1 are vertically connected to form a stable right-angle reference. The center angle auxiliary device 2 is installed at the connection between the two to provide a central fulcrum for the rotation of the movable ruler arm 3. One end of the movable ruler arm 3 is coaxially rotatably connected to the center angle auxiliary device 2 and can rotate around it. At least two locking knobs 4 are threadedly connected to the movable ruler arm 3 and the center angle auxiliary device 2 respectively, which can lock and fix the corresponding positions. From the perspective of implementation points and innovation, these component combinations bring many beneficial effects: the straight drawing edges on the outer sides of the horizontal ruler arm 11 and the vertical ruler arm 12 of the L-shaped fixed ruler arm 1, combined with the straight drawing edge 31 of the movable ruler arm 3, meet the needs of drawing straight lines in different directions, and the right-angle structure of the fixed ruler arm provides a convenient reference for right-angle drawing; the annular scale 23 of the center angle auxiliary device 2 can accurately mark the rotation angle of the movable ruler arm 3, and with its rotational connection with the movable ruler arm 3, drawing at various angles can be realized; at least two locking knobs 4 can fix the relative rotational position of the movable ruler arm 3 and the center angle auxiliary device 2, as well as the circumferential positioning of the annular scale 23, respectively, solving the problem of unstable angle fixation in existing devices and making the drawing process more stable and accurate. In addressing existing problems, the L-shaped fixed ruler arm 1 overcomes the shortcomings of ordinary rulers, such as limited functionality and non-adjustable angles; the center angle auxiliary device 2 solves the problem of protractors lacking precise angle markings and a center reference; the rotating connection of the movable ruler arm 3 meets the needs of drawing at different angles and makes up for the limitations of fixed angle tools; and the locking knob 4 solves the defect of poor angle fixation in existing combination tools. The coordinated action of each structure enables the device to achieve the effect of multi-functional auxiliary drawing.

[0032] like Figure 3 and Figure 4 As shown, the center angle auxiliary device 2 includes a fixed disk 21 and a rotating disk 22, with an annular scale 23 integrated around the fixed disk 21. The fixed disk 21 is fixed to the joint of the fixed ruler arm 1 by bolt connection or integral molding. The rotating disk 22 is fixedly connected to one end of the movable ruler arm 3 by rivets or bolts to ensure that the two rotate coaxially and synchronously. A locking knob 4 passes through the rotating disk 22 and is threadedly connected to the fixed disk 21 to lock the relative rotation of the rotating disk 22 and the fixed disk 21. Another locking knob 4 on the movable ruler arm 3 helps to fix the posture of the movable ruler arm 3.

[0033] In this embodiment, the fixed plate 21 is fixed to the joint of the fixed ruler arm 1 by bolt connection or integral molding, providing a stable foundation for the entire center angle auxiliary device 2. The rotating plate 22 is fixed to one end of the movable ruler arm 3 by means of rivets or bolts, ensuring that the two rotate coaxially and synchronously. The annular scale 23 is integrated around the fixed plate 21. One locking knob 4 passes through the rotating plate 22 and is threadedly connected to the fixed plate 21. Another locking knob 4 is used on the movable ruler arm 3 to help fix its posture. In terms of implementation and innovation, this structural combination is remarkably effective: the fixing method of the fixed plate 21 ensures the stability of the connection between the center angle auxiliary device 2 and the fixed ruler arm 1, preventing loosening or displacement during use; the connection method between the rotating plate 22 and the movable ruler arm 3 ensures the accuracy of angle adjustment, allowing the rotation angle of the movable ruler arm 3 to be consistent with that of the rotating plate 22; the annular scale 23 is integrated into the fixed plate 21, making the angle marking more intuitive and less prone to wear; the two locking knobs 4 have clearly defined functions, fixing the angle from the relative rotation of the rotating plate and the fixed plate, as well as from the posture of the movable ruler arm, further improving the reliability of angle fixing. In addressing existing problems, the stable connection of the fixed plate 21 solves the problem of easy wobbling of the angle reference in existing auxiliary tools; the synchronous rotation of the rotating plate 22 and the movable ruler arm 3 solves the defect of inaccurate angle adjustment; the design of the double locking knobs 4 compensates for the shortcomings of the existing tools' single angle fixing method and poor fixing effect, and the collaboration of all components makes the device more accurate and stable in angle drawing and fixing.

[0034] When using this multi-functional auxiliary ruler for mathematics education, a pencil (an existing drawing tool) is needed to draw lines along the straight drawing edges of the horizontal ruler arm 11, the vertical ruler arm 12, and the movable ruler arm 3. The fixed ruler arm 1, the movable ruler arm 3, the fixed disk 21, and the rotating disk 22 can be made of ABS plastic or aluminum alloy (combining lightness and structural strength). The knob head of the locking knob 4 can be made of rubber (to improve grip friction), and the threaded section can be made of stainless steel (to ensure the wear resistance of the threaded fit). At the same time, a flat workbench (an existing support structure) is needed to provide a stable base for the drawing process. Fixing and adjustment are achieved by tightening and loosening the locking knob 4 by hand. The above-mentioned existing devices and technologies work together with this device to complete the accurate drawing operation.

[0035] Specifically, when processing the horizontal ruler arm 11 and the vertical ruler arm 12 of the fixed ruler arm 1, existing metal cutting machine tools or plastic extrusion molding equipment are used. The straight drawing edges are smoothed using existing grinding wheel technology. The angle scale of the annular dial 23 is engraved on the circumference of the fixed dial 21 using existing laser engraving technology to ensure clear and durable scale. The threaded section of the locking knob 4 and the corresponding threaded hole are processed using existing thread lathes to ensure thread fit accuracy. During use, if a longer straight line needs to be drawn, an existing ruler can be used to align and splice with the straight drawing edge of this device to extend the drawing length. When used on vertical planes such as blackboards, the device can be attracted and fixed by existing magnetic devices (such as adding a magnetic patch to the back of the fixed ruler arm 1). During operation, first, the magnetic patch is pasted to the back of the fixed ruler arm 1 with existing double-sided tape, then the device is placed close to the blackboard to complete the attraction. Then, the angle is adjusted and locked according to the conventional steps. Then, chalk can be held and drawn along the drawing edge. When removing the device after drawing, simply apply a pulling force to separate the magnetic attraction.

[0036] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A multifunctional auxiliary ruler for mathematics education, characterized in that, include: L-shaped fixed ruler arm (1): It has a horizontally extending horizontal ruler arm (11) and a vertically extending vertical ruler arm (12), which are vertically connected; Center angle auxiliary device (2): installed at the junction of the horizontal ruler arm (11) and the vertical ruler arm (12) of the fixed ruler arm (1), the center angle auxiliary device (2) is provided with an annular scale (23); Long strip-shaped movable ruler arm (3): One end is coaxially rotatably connected to the center angle auxiliary device (2); At least two locking knobs (4): connected by threads to the movable ruler arm (3) and the center angle auxiliary device (2), for selectively locking the relative rotational position of the movable ruler arm (3) and the center angle auxiliary device (2), as well as the circumferential positioning of the annular dial (23), to fix the drawing angle.

2. The multifunctional auxiliary ruler for mathematics education according to claim 1, characterized in that: The center angle aid (2) includes a fixed disk (21) and a rotating disk (22); the annular scale (23) is integrated on the periphery of the fixed disk (21); the rotating disk (22) is fixedly connected to the movable ruler arm (3) and rotates coaxially with the fixed disk (21); a locking knob (4) passes through the rotating disk (22) and is threadedly connected to the fixed disk (21) to lock the relative rotation of the rotating disk (22) and the fixed disk (21).

3. The multifunctional auxiliary ruler for mathematics education according to claim 2, characterized in that: The movable ruler arm (3) has a straight drawing edge (31) at one end away from the center angle aid (2); the movable ruler arm (3) is also provided with another locking knob (4), which is used to help fix the posture of the movable ruler arm (3).

4. The multifunctional auxiliary ruler for mathematics education according to claim 1, characterized in that: The fixed ruler arm (1) has straight drawing edges on the outer side of both the horizontal ruler arm (11) and the vertical ruler arm (12).

5. The multifunctional auxiliary ruler for mathematics education according to claim 2, characterized in that: The fixing plate (21) is fixed to the junction of the horizontal ruler arm (11) and the vertical ruler arm (12) of the fixing ruler arm (1) by bolt connection or integral molding.

6. The multifunctional auxiliary ruler for mathematics education according to claim 2, characterized in that: The rotating disk (22) is fixedly connected to one end of the movable ruler arm (3) by rivets or bolts, ensuring that the movable ruler arm (3) and the rotating disk (22) rotate coaxially and synchronously.

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