CN219256897U - Detachable multifunctional ruler - Google Patents

Abstract

The utility model provides a detachable multifunctional ruler, which belongs to the field of teaching aids and comprises a chassis, a straight rod and a circle center base, wherein a first sliding groove and a second sliding groove which are perpendicular to each other are arranged on the chassis, a base hole is further formed in the chassis, the circle center base is detachably connected in the base hole, a hollow groove is formed in one end of the straight rod and is used for installing an external scribing tool, a round hole of an end part is formed in the end head of the other end of the straight rod, a round hole of the end part is formed in the rod part between the hollow groove and the round hole of the end part and close to the round hole of the end part, a first sliding block and a second sliding block are respectively arranged in the first sliding groove and the second sliding groove, and the first sliding block and the second sliding block are respectively movably connected with the round hole of the upper end part of the straight rod and the round hole of the rod part. The multifunctional ruler integrates linear mapping, circular mapping, elliptical mapping and angle mapping, and is convenient to use.

Description

Detachable multifunctional ruler

Technical Field

The utility model belongs to the field of teaching aids, and particularly relates to a detachable multifunctional ruler.

Background

The existing graph drawing tool generally has only drawing or measuring functions of specific graphs, a ruler is used for drawing straight lines and measuring lengths, a protractor is used for measuring angles, a compass is used for drawing circles, an ellipsometer is used for drawing ellipses, and a combination of functions aiming at the requirements is lacked. In particular, the lack of a combination of ellipse drawing functions results in a large variety of tools to be used in learning and teaching, and it is often necessary to constantly replace the tools in use.

Therefore, it is necessary to develop a multifunctional ruler to integrate various drawing functions for convenient use.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a detachable multifunctional ruler which integrates linear mapping, round mapping, elliptical mapping and angle mapping into a whole through structural design, aims to solve the problem that no multifunctional integrated ruler is available in the prior art, is convenient to use, can meet the conventional various mapping requirements in the teaching by only adopting the ruler, and solves the complex problem caused by the fact that different teaching aid mapping functions are different in the prior art and various mapping teaching aids need to be prepared.

In order to achieve the above purpose, the utility model provides a detachable multifunctional ruler, which comprises a chassis, a straight rod and a circle center base, wherein a first chute and a second chute which are mutually vertical are arranged on the chassis, the intersection point of the first chute and the second chute coincides with the center of the chassis, the straight rod can be movably connected in the first chute and the second chute and can slide under the double constraint of the first chute and the second chute, a base hole is further arranged on the chassis, the circle center base is detachably connected in the base hole, one end of the straight rod is provided with a hollow groove for installing an external scribing tool, the other end of the straight rod is provided with a round hole of an end head part, a round hole of a rod part is arranged on the rod part between the hollow groove and the round hole of the end head part and close to the round hole of the end head part, a first sliding block and a second sliding block are respectively arranged in the first chute and the second chute, and the first sliding block and the second sliding block are respectively movably connected with the round hole of the upper end head part of the straight rod and the round hole of the rod part.

Further, the chassis includes chassis upper strata, chassis lower floor and chassis intermediate level, the chassis upper strata, the chassis lower floor is circular form, chassis upper strata openly department attaches and is provided with the protractor or is provided with the scale of angle, chassis upper strata is kept away from protractor or protractor scale department is provided with circular base hole, first spout and the second spout of mutually perpendicular are seted up on the chassis upper strata, the chassis intermediate level is four right-angle form's lath and forms at chassis upper strata reverse side with the angle relative subsides, right-angle form's lath sets up along mutually perpendicular first spout and second spout, the chassis lower floor is attached and is fixed as an organic whole with the chassis intermediate level, the right-angle form lath of chassis intermediate level has the thickness that sets for make chassis upper strata and chassis lower floor interval, and then form the space of holding first slider and second slider, finally realize that first slider and second slider slide along first spout and second spout.

Further, the round holes at the upper rod part of the straight rod are sequentially arranged and are arranged at equal intervals.

Further, a ruler or ruler scales are attached to the straight rod.

Further, the first sliding block and the second sliding block are both T-shaped, and the edges are provided with fillets.

Further, bolt holes are respectively formed in the first sliding block and the second sliding block, and the first sliding block and the second sliding block are respectively and movably connected with the round hole at the upper end head part of the straight rod and the round hole at the rod part through bolts.

Further, a bolt hole is formed in the front face of the circle center base, and when the circle center base is used, the round hole at the end of the straight rod is movably connected with the round base through the bolt, so that a circle can be drawn.

Further, a plurality of magnet stones are arranged on the back surface of the lower layer of the chassis, and the magnet stones are also arranged on the bottom surface of the circle center base.

Further, the center of the lower layer of the chassis is a circular through hole, and transparent organic plastics are filled in the through hole.

Further, the chalk fixer is further arranged, and the chalk fixer is fixed in the empty groove of the straight rod through the claw nut.

In general, the above technical solutions conceived by the present utility model have the following beneficial effects compared with the prior art:

the device is manufactured by using the principle of the Davinci ellipse, can draw ellipses with different eccentricity and different sizes, can draw ellipses with different specifications, can be simply disassembled and assembled, can be temporarily changed into compasses, and can draw circles with different radiuses, thereby being convenient for teaching. In addition, the straight rod with ruler measurement function can be used independently, and is changed into a ruler, and the ruler is convenient to detach and flexible to use in cooperation with teaching drawing requirements of analytic geometry. The function of measuring angles is further increased due to the addition of the protractor, and almost all requirements of the plate modeling drawing are solved.

The device has simple structure, can help a teacher to draw an ellipse on the blackboard, solves the embarrassment of original freehand drawing, and can draw necessary figures in analysis geometry such as coordinate axes, straight lines, circles, angles and the like through simple disassembly, thereby bringing convenience for the teacher's questions and students' understanding questions. The device is tried by a plurality of high school teachers and has good evaluation.

Drawings

FIG. 1 is a top view of a detachable multi-functional ruler provided by an embodiment of the present utility model;

FIG. 2a is a top view of the upper layer of the chassis provided by an embodiment of the present utility model;

FIG. 2b is a top view of the lower layer of the chassis provided by an embodiment of the present utility model;

FIG. 3 is a top view of a straight rod in an embodiment of the present utility model;

fig. 4 is a top view of a circle center base in an embodiment of the utility model.

In the above figures, like reference numerals refer to like structures and elements, wherein,

1-chassis upper layer 2-straight rod 3-circle center base

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model relates to a detachable multifunctional ruler and a drawing tool for installing an external scribing tool, wherein the drawing tool comprises a chassis 1, a straight rod 2 and a circle center base 3, a first sliding groove and a second sliding groove which are mutually perpendicular are arranged on the chassis 1, the intersection points of the first sliding groove and the second sliding groove are coincided with the center of the chassis, the straight rod can be movably connected in the first sliding groove and the second sliding groove and can slide under the double constraint of the first sliding groove and the second sliding groove, a base hole is further arranged on the chassis, the circle center base is detachably connected in the base hole, one end of the straight rod is provided with a hollow groove for installing an external scribing tool, the other end of the straight rod is provided with a round hole of an end head, a round hole of the end head is arranged on the rod part between the hollow groove and the round hole of the end head, the round hole of the end head is arranged in the position close to the rod part, a first sliding block and a second sliding block are respectively arranged in the first sliding groove and the second sliding groove, and the first sliding block and the second sliding block are respectively movably connected with the round hole of the upper end of the straight rod and the rod part.

Fig. 2a is a top view of an upper chassis layer provided by an embodiment of the present utility model, fig. 2b is a top view of an lower chassis layer provided by an embodiment of the present utility model, and as can be seen from the two figures, the lower chassis layer includes an upper chassis layer, a lower chassis layer and a middle chassis layer, the upper chassis layer and the lower chassis layer are both circular, a protractor or a scale with an angle is attached to the front surface of the upper chassis layer, a circular base hole is provided at the position of the upper chassis layer far from the protractor or the scale, a first chute and a second chute which are perpendicular to each other are provided at the upper chassis layer, the middle chassis layer is formed by attaching four right-angle-shaped slats to the back surface of the upper chassis layer at an angle, the right-angle-shaped slats are disposed along the first chute and the second chute which are perpendicular to each other, the lower chassis layer is attached to the middle chassis layer and is fixed with the upper chassis layer into a whole, the right-angle-shaped slats of the middle chassis layer have a set thickness, so that the upper chassis layer and the lower chassis layer are separated by a distance, and a space for accommodating the first slider and the second slider is formed, and finally the first slider and the second slider slide along the first chute and the second chute are realized. The first sliding block and the second sliding block are respectively provided with a bolt hole, and the first sliding block and the second sliding block are respectively and movably connected with a round hole at the upper end head part of the straight rod and a round hole at the rod part through bolts. The circle center base is provided with a bolt hole on the front surface, and when the circle center base is used, the round hole at the end part of the straight rod is movably connected with the round base by the bolt, so that the circle center base is used for drawing a circle.

Fig. 3 is a top view of a straight rod according to an embodiment of the present utility model, where the round holes at the upper rod portion of the straight rod are sequentially arranged and equally spaced, and a ruler is attached to the straight rod or ruler scales are provided.

When the device is manufactured, two sliding blocks are firstly placed in the guide groove between the upper layer of the chassis and the lower layer of the chassis one by one according to a design drawing, then the upper layer of the chassis, the middle layer of the chassis and the lower layer of the chassis are fixed by screws, and the tightness of the screws is adjusted so that the plane is smooth, so that the sliding blocks can slide flexibly and freely. And then, fixing the chalk fixer in a hollow groove of the straight rod with the measuring function through a claw nut, and finally movably connecting the straight rod with the first sliding block and the second sliding block through bolts. When drawing an ellipse, the straight rod can be driven by the sliding block, and an elliptical track is drawn by using the chalk of the chalk prescriber.

In one embodiment, the upper layer of the chassis is made of a three-ply board, for example, with a diameter of 20cm, and two hollow slots with a width of 1cm which are perpendicular to each other and cross the center of the circle are hollowed out. A protractor is attached to the surface of the upper layer of the chassis and is located exactly at the semicircle. A base round hole with the diameter of 5.2cm is excavated at the right lower part of the upper layer of the chassis and is used for placing a base with the center of a circle. The thin wood sheet is made into four right angles to form a chassis middle layer, is placed between a chassis upper layer and a chassis lower layer, and is attached to the chassis upper layer and the chassis lower layer at the same time, so that a guide groove is formed. In order to be convenient to use as a teaching aid, three magnet stones are additionally arranged on the back, so that the magnet stones can be stably sucked on a blackboard, and are convenient to place and take and place conveniently. For the sake of firmness, the back of the chassis is made of fir board with thickness of 8mm, for conveniently searching ellipse and circle center, the circle center is hollowed to form a small circle with diameter of 4cm, and the small circle is filled with transparent organic plastic.

In one embodiment of the utility model, the bolt is made of a rosewood with a tighter material, and is a cylindrical bolt, and a groove is formed at the tail part of the cylindrical bolt. Two T-shaped sliding blocks with round corners of the rosewood trolley with more compact materials are used, and two small holes are drilled above each sliding block, so that the metal spherical spring pins are arranged in the bolts for facilitating flexible insertion of the bolts, and the metal spherical spring pins are used for assisting flexible insertion of the bolts.

In one embodiment of the utility model, the straight rod with the measuring function is manufactured into a rectangular wood strip with the length of 40cm and the width of about 3.5cm, a ruler with the length of 40cm is attached to the straight rod or scales are directly manufactured on the straight rod, a hollow groove with the length of about 22cm is dug in the straight rod, so that a chalk fixer can be placed, and the chalk fixer can be adjusted along the length direction of the hollow groove, so that circles with different diameters can be drawn. The other end of the straight rod opposite to the empty slot is provided with four small round holes which are arranged in sequence, and in actual use, the number of the small round holes is not limited to four, and the number of the small round holes is more than 2, which is feasible. A small round hole is arranged at the end head of the end of the straight rod. The small round hole at the end head and one of the plurality of small round holes which are sequentially arranged are respectively hinged with the two sliding blocks by bolts, and the two sliding blocks respectively move along the guide groove in the sliding process to drive the chalk to realize circle drawing. By selecting one of the different small round holes which are arranged in sequence, ellipses with different eccentricity can be drawn. In addition, the size of the ellipse can be controlled by moving the chalk fixer.

In one embodiment of the utility model, the chalk fixer is formed by connecting two hollow cylinders by using a rosewood trolley and using a small wood chip, a copper sheet spring is additionally arranged in a round hole for placing the chalk and used for fixing the chalk, and finally, a claw nut is used for fixing the position of the chalk and the length can be adjusted.

Fig. 4 is a top view of a circle center base in an embodiment of the utility model, in which a cylindrical step is formed by turning a wooden block and a magnet is mounted at the bottom for adsorption.

The multifunctional ruler and compass provided by the utility model is manufactured by utilizing the principle of the Davinci ellipse, can draw ellipses with different eccentricities and different sizes, can draw ellipses with different eccentricities by selecting one of different small round holes which are sequentially arranged and matching with the round hole at the extreme end of the straight rod, and can draw ellipses with different sizes by moving the chalk fixer.

The multifunctional ruler and compass can solve the problem of drawing ellipses in high school mathematics teaching, can also realize the functions of drawing circles, drawing straight lines, measuring angles, drawing angles and the like through optimal design and combination, and provides convenience for drawing the ruler and compass of the mathematics teaching. The multifunctional ruler is called multifunctional because it can draw ellipses with different specifications, can be simply disassembled and assembled, can be temporarily changed into compasses, and can draw circles with different radiuses, thereby being convenient for teaching. In addition, the straight rod with ruler measurement function can be used independently, and is changed into a ruler, and the ruler is convenient to detach and flexible to use in cooperation with teaching drawing requirements of analytic geometry. The function of measuring angles is further increased due to the addition of the protractor, and almost all requirements of the plate modeling drawing are solved.

The working method for drawing by adopting the device of the utility model is as follows:

1. drawing a straight line: the straight rod is used alone, namely a straight ruler, which can be used for drawing a straight line and measuring the length of a line segment, and also can be used for drawing a rectangular coordinate system xOy.

2. Drawing a circle: the circle center base is sucked on the blackboard, the straight rod is hinged on the circle center base by the bolt, the circle center base is used as a circle center, the straight rod is used as a radius, a simple compass is formed, and circles with different radius ranges can be drawn by adjusting the position of the chalk fixer.

3. Drawing an ellipse: the lower layer of the chassis is adsorbed on a blackboard, the horizontal position of the x axis is fixed, then two bolts are used for fixing a straight rod on two sliding blocks, one bolt corresponds to the sliding block on the y axis, and the other bolt corresponds to the sliding block on the x axis, so that an ellipse with the long axis on the x axis can be drawn, and the multifunctional ruler can be rotated by 90 degrees if the long axis is on the y axis. The position of the chalk fixer is changed, the size of the ellipse can be changed, and the ellipse with three different eccentricity can be drawn by changing the positions of a plurality of small round holes which are sequentially arranged.

4. Measurement and drawing angle: the upper layer of the chassis is provided with a protractor, and the vertex and the starting edge of the angle are aligned, so that the angle can be measured. By combining the application of the ruler, various required angles can be drawn.

It should be noted that the black dots in all the drawings represent the magnet.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. A detachable multifunctional ruler is characterized by comprising a chassis (1), a straight rod (2) and a circle center base (3), wherein a first chute and a second chute which are mutually vertical are arranged on the chassis (1), the intersection point of the first chute and the second chute coincides with the center of the chassis, the straight rod can be movably connected in the first chute and the second chute and can slide under the double constraint of the first chute and the second chute,

the chassis is also provided with a base hole, the circle center base is detachably connected in the base hole,

a hollow groove is arranged at one end of the straight rod and used for installing a scribing tool, a round hole at the end head is arranged at the end head of the other end of the straight rod, a round hole at the rod part is arranged between the hollow groove and the round hole at the end head and near the round hole at the end head,

the first sliding groove and the second sliding groove are internally provided with a first sliding block and a second sliding block respectively, and the first sliding block and the second sliding block are movably connected with a round hole at the upper end head part of the straight rod and a round hole at the rod part respectively.

2. The detachable multifunctional ruler and compass of claim 1, wherein the chassis comprises a chassis upper layer, a chassis lower layer and a chassis middle layer, the chassis upper layer and the chassis lower layer are round, a protractor or a scale for measuring angles is attached to the front surface of the chassis upper layer, a round base hole is arranged at the position, far away from the protractor or the scale, of the chassis upper layer, a first chute and a second chute which are mutually perpendicular are arranged on the chassis upper layer,

the middle layer of the chassis is formed by attaching four right-angle battens on the back surface of the upper layer of the chassis in opposite angles, the right-angle battens are arranged along a first chute and a second chute which are mutually vertical,

the lower layer of the chassis is attached to the middle layer of the chassis and is fixed with the upper layer of the chassis into a whole,

the right-angle-shaped batten of the middle layer of the chassis is provided with a set thickness, so that the upper layer of the chassis and the lower layer of the chassis are separated by a distance, a space for accommodating the first sliding block and the second sliding block is formed, and finally the first sliding block and the second sliding block slide along the first sliding groove and the second sliding groove.

3. The detachable multifunctional ruler and compass as claimed in claim 2, wherein the round holes at the upper rod part of the straight rod are sequentially arranged at equal intervals.

4. A detachable multifunctional ruler as claimed in claim 3, wherein a ruler or ruler scale is attached to the straight rod.

5. The detachable multifunctional ruler of claim 4 wherein the first slider and the second slider are each T-shaped and the edges have rounded corners.

6. The detachable multifunctional ruler and compass of claim 5, wherein the first sliding block and the second sliding block are respectively provided with a bolt hole, and the first sliding block and the second sliding block are respectively and movably connected with a round hole at the upper end head part of the straight rod and a round hole at the rod part through bolts.

7. The detachable multifunctional ruler and compass as claimed in claim 6, wherein the front surface of the circle center base is provided with a bolt hole, and in use, the round hole at the end of the straight rod is movably connected with the round base by a bolt for drawing a circle.

8. The detachable multifunctional ruler of claim 7, wherein a plurality of magnet stones are arranged at the back surface of the lower layer of the chassis, and the magnet stones are also arranged at the bottom surface of the circle center base.

9. The detachable multifunctional ruler and compass as claimed in claim 8, wherein the center of the lower layer of the chassis is a circular through hole, and transparent organic plastic is filled in the through hole.

10. The detachable multifunctional ruler of claim 9 further comprising a chalk holder, wherein the chalk holder is secured in the hollow of the straight pole by a claw nut.

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